/* roulang page: index */
:root {
            --c-primary: #0F6E60;
            --c-primary-dark: #0B3D35;
            --c-primary-press: #0A574C;
            --c-primary-soft: #E7F2EF;
            --c-accent: #F0B429;
            --c-accent-light: #FDF1D7;
            --c-body: #162A26;
            --c-muted: #4C6A64;
            --c-weak: #829A94;
            --c-line: #DFE8E5;
            --c-bg: #F2F4F2;
            --c-card: #FFFFFF;
            --radius-card: 20px;
            --radius-btn: 12px;
            --radius-control: 12px;
            --shadow-card: 0 2px 8px rgba(11, 61, 53, 0.06);
            --shadow-hover: 0 8px 24px rgba(11, 61, 53, 0.12);
            --shadow-float: 0 20px 52px rgba(11, 61, 53, 0.16);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Segoe UI", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", "Cascadia Code", monospace;
        }

        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--c-bg);
            color: var(--c-body);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--c-primary);
            background: var(--c-primary-soft);
            padding: 6px 12px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .section {
            position: relative;
            padding: 88px 0;
        }

        .sec-head {
            max-width: 720px;
            margin-bottom: 42px;
        }

        .sec-head h2 {
            font-size: clamp(28px, 4vw, 40px);
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--c-primary-dark);
            margin-bottom: 14px;
        }

        .sec-head p {
            font-size: 17px;
            color: var(--c-muted);
        }

        .sec-head--split {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            max-width: 100%;
        }

        .link-more {
            color: var(--c-primary);
            font-weight: 600;
            white-space: nowrap;
            padding-bottom: 6px;
            border-bottom: 2px solid transparent;
            transition: border-color .2s, color .2s;
        }

        .link-more:hover {
            color: var(--c-primary-press);
            border-color: var(--c-primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 22px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background .2s ease-out, border-color .2s, box-shadow .2s, transform .2s ease-out;
        }

        .btn-primary {
            background: var(--c-primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(15, 110, 96, 0.2);
        }

        .btn-primary:hover {
            background: var(--c-primary-press);
            transform: translateY(-1px);
            box-shadow: 0 12px 26px rgba(15, 110, 96, 0.26);
        }

        .btn-primary:active {
            background: var(--c-primary-dark);
            transform: translateY(0);
        }

        .btn-ghost {
            background: #fff;
            border-color: #CFDFDA;
            color: var(--c-primary-dark);
        }

        .btn-ghost:hover {
            background: var(--c-primary-soft);
            border-color: var(--c-primary);
            transform: translateY(-1px);
        }

        .btn-accent {
            background: var(--c-accent);
            color: #162A26;
            border-color: var(--c-accent);
        }

        .btn-accent:hover {
            background: #E0A523;
            border-color: #E0A523;
            transform: translateY(-1px);
        }

        .btn-line-light {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.5);
            color: #fff;
        }

        .btn-line-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }

        .btn:focus-visible {
            outline: 4px solid var(--c-primary-soft);
            outline-offset: 2px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 11px;
            border-radius: 999px;
            line-height: 1.5;
            background: var(--c-primary-soft);
            color: var(--c-primary-dark);
        }

        .badge-warm {
            background: var(--c-accent-light);
            color: #7A5412;
        }

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid rgba(223, 232, 229, 0.7);
            backdrop-filter: blur(12px);
            transition: box-shadow .25s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 22px rgba(11, 61, 53, 0.07);
        }

        .nav {
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(145deg, var(--c-primary), var(--c-primary-dark));
            border-radius: 12px;
            box-shadow: 0 6px 14px rgba(15, 110, 96, 0.2);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 700;
            color: var(--c-primary-dark);
            line-height: 1;
        }

        .brand-name small {
            font-size: 13px;
            font-weight: 500;
            color: var(--c-muted);
            margin-left: 8px;
            letter-spacing: 0.4px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            height: 42px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--c-muted);
            position: relative;
            transition: background .2s, color .2s;
        }

        .nav-links a:hover {
            background: var(--c-primary-soft);
            color: var(--c-primary-dark);
        }

        .nav-links a.active {
            background: var(--c-primary-soft);
            color: var(--c-primary-dark);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--c-primary);
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 10px;
        }

        .nav-cta .btn {
            height: 40px;
            font-size: 15px;
            padding: 0 18px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--c-line);
            background: #fff;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
            gap: 5px;
            flex-direction: column;
            cursor: pointer;
        }

        .nav-toggle span {
            width: 18px;
            height: 2px;
            background: var(--c-primary-dark);
            border-radius: 4px;
            display: block;
            transition: transform .2s, opacity .2s;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: min(320px, 86vw);
            background: #fff;
            z-index: 220;
            padding: 26px 22px;
            transform: translateX(102%);
            transition: transform .3s ease;
            overflow-y: auto;
            box-shadow: var(--shadow-float);
            display: flex;
            flex-direction: column;
        }

        .mobile-drawer.open {
            transform: none;
        }

        .drawer-close {
            position: absolute;
            top: 16px;
            right: 16px;
            width: 42px;
            height: 42px;
            border: 1px solid var(--c-line);
            background: var(--c-bg);
            border-radius: 12px;
            font-size: 24px;
            line-height: 1;
            color: var(--c-primary-dark);
            cursor: pointer;
        }

        .drawer-brand {
            margin-top: 52px;
            font-size: 20px;
            font-weight: 700;
            color: var(--c-primary-dark);
        }

        .drawer-nav {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .drawer-nav a {
            display: block;
            padding: 14px 10px;
            font-size: 16px;
            font-weight: 500;
            color: var(--c-muted);
            border-radius: 12px;
        }

        .drawer-nav a:hover,
        .drawer-nav a.active {
            background: var(--c-primary-soft);
            color: var(--c-primary-dark);
            font-weight: 600;
        }

        .drawer-cta {
            margin-top: auto;
            margin-bottom: 30px;
        }

        .drawer-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(11, 61, 53, 0.4);
            z-index: 210;
            opacity: 0;
            pointer-events: none;
            transition: opacity .25s ease;
        }

        .drawer-backdrop.show {
            opacity: 1;
            pointer-events: auto;
        }

        /* Hero */
        .hero {
            position: relative;
            overflow: hidden;
            background:
                radial-gradient(900px 380px at 88% -8%, rgba(240, 180, 41, 0.09), transparent 60%),
                linear-gradient(118deg, #F2F7F4 0%, #EEF3EF 50%, #F8F4EA 100%);
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            opacity: 0.1;
            pointer-events: none;
        }

        .hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(11, 61, 53, 0.16) 1px, transparent 1px);
            background-size: 30px 30px;
            mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 72%, transparent 100%);
            opacity: 0.35;
            pointer-events: none;
        }

        .hero-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.02fr 0.98fr;
            gap: 60px;
            align-items: center;
            padding: 72px 0 86px;
        }

        .hero-copy {
            max-width: 620px;
        }

        .hero h1 {
            font-size: clamp(34px, 4.2vw, 52px);
            line-height: 1.24;
            color: var(--c-primary-dark);
            letter-spacing: -0.02em;
            margin: 0 0 22px;
            font-weight: 700;
        }

        .hero-desc {
            font-size: 18px;
            line-height: 1.85;
            color: var(--c-muted);
            margin-bottom: 32px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .hero-proof {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            color: var(--c-muted);
            background: rgba(255, 255, 255, 0.7);
            border: 1px solid rgba(223, 232, 229, 0.9);
            border-radius: 999px;
            padding: 8px 18px;
            backdrop-filter: blur(4px);
        }

        .proof-pulse {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-primary);
            box-shadow: 0 0 0 4px rgba(15, 110, 96, 0.14);
        }

        .hero-visual {
            position: relative;
            min-height: 520px;
        }

        .mock-card {
            width: min(450px, 96%);
            margin-left: auto;
            background: #fff;
            border-radius: 24px;
            border: 1px solid rgba(223, 232, 229, 0.9);
            box-shadow: var(--shadow-float);
            overflow: hidden;
            position: absolute;
            right: 0;
            top: 20px;
            transform: perspective(1500px) rotateY(-4deg);
            transition: transform .35s ease;
        }

        .mock-card:hover {
            transform: perspective(1500px) rotateY(-1deg) translateY(-4px);
        }

        .mock-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 18px;
            border-bottom: 1px solid var(--c-line);
            background: #FBFDFC;
        }

        .mock-brand {
            font-weight: 700;
            font-size: 14px;
            color: var(--c-primary-dark);
            letter-spacing: 0.3px;
        }

        .mock-brand i {
            font-style: normal;
            font-weight: 400;
            color: var(--c-muted);
            font-size: 12px;
        }

        .mock-lock {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 12px;
            color: var(--c-primary);
            font-weight: 600;
        }

        .mock-content {
            padding: 28px 28px 30px;
        }

        .mock-welcome {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 22px;
        }

        .mock-avatar {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: var(--c-primary-soft);
            color: var(--c-primary-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
        }

        .mock-welcome strong {
            display: block;
            font-size: 17px;
            color: var(--c-primary-dark);
        }

        .mock-welcome small {
            color: var(--c-weak);
            font-size: 13px;
        }

        .mock-field {
            margin-bottom: 16px;
        }

        .mock-field label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--c-muted);
            margin-bottom: 6px;
        }

        .mock-input {
            height: 44px;
            border: 1px solid #CDDAD6;
            border-radius: 12px;
            background: #FBFDFC;
            padding: 0 14px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--c-body);
            font-family: var(--font-mono);
            font-size: 13px;
            transition: border-color .2s, box-shadow .2s;
        }

        .mock-input.filled {
            border-color: var(--c-primary);
            box-shadow: 0 0 0 3px rgba(15, 110, 96, 0.13);
        }

        .mock-input svg {
            width: 16px;
            height: 16px;
            fill: none;
            stroke: var(--c-weak);
        }

        .mock-eye {
            margin-left: auto;
            color: var(--c-weak);
            display: flex;
            align-items: center;
        }

        .mock-verify {
            margin: 18px 0;
        }

        .mock-track {
            position: relative;
            height: 44px;
            border: 1px solid var(--c-line);
            background: var(--c-bg);
            border-radius: 12px;
            overflow: hidden;
            display: flex;
            align-items: center;
        }

        .mock-track::before {
            content: "";
            position: absolute;
            left: 3px;
            right: 22%;
            top: 3px;
            bottom: 3px;
            background: rgba(15, 110, 96, 0.12);
            border-radius: 10px;
        }

        .mock-thumb {
            position: absolute;
            right: 3px;
            top: 3px;
            width: 38px;
            height: 36px;
            border-radius: 10px;
            background: var(--c-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 10px rgba(15, 110, 96, 0.25);
        }

        .mock-thumb svg {
            width: 16px;
            height: 16px;
            stroke: #fff;
        }

        .mock-verify-text {
            position: absolute;
            left: 18px;
            font-size: 13px;
            color: var(--c-primary-dark);
            font-weight: 600;
            letter-spacing: .3px;
        }

        .mock-login {
            width: 100%;
            height: 46px;
            border-radius: 12px;
            background: var(--c-primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 20px rgba(15, 110, 96, 0.2);
            margin-bottom: 18px;
        }

        .mock-preview {
            background: #F7F9F8;
            border: 1px solid var(--c-line);
            border-radius: 16px;
            padding: 14px 16px;
        }

        .mock-preview-title {
            font-size: 12px;
            font-weight: 600;
            color: var(--c-muted);
            display: flex;
            align-items: center;
            gap: 7px;
            margin-bottom: 10px;
        }

        .mock-preview-title::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-accent);
        }

        .mock-kpi {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mock-kpi div {
            background: #fff;
            border: 1px solid var(--c-line);
            border-radius: 12px;
            padding: 10px 12px;
        }

        .mock-kpi small {
            display: block;
            font-size: 12px;
            color: var(--c-weak);
        }

        .mock-kpi strong {
            font-family: var(--font-mono);
            font-size: 22px;
            color: var(--c-primary-dark);
        }

        .float-chip {
            position: absolute;
            z-index: 3;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--c-line);
            padding: 10px 15px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--c-primary-dark);
            box-shadow: var(--shadow-card);
            animation: float 4s ease-in-out infinite;
        }

        .float-chip .chip-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--c-primary);
        }

        .chip-1 {
            left: 6%;
            top: 12%;
            animation-delay: 0s;
        }

        .chip-2 {
            right: -2%;
            bottom: 4%;
            animation-delay: 1.5s;
        }

        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        /* Review Band */
        .band {
            padding: 52px 0 72px;
            border-bottom: 1px solid var(--c-line);
        }

        .band-head {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 26px;
        }

        .band-head .bar {
            width: 30px;
            height: 3px;
            background: var(--c-accent);
            border-radius: 4px;
        }

        .band-head p {
            color: var(--c-muted);
            font-weight: 500;
            font-size: 15px;
        }

        .review-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .review-card {
            background: var(--c-card);
            border-radius: var(--radius-card);
            border: 1px solid rgba(223, 232, 229, 0.9);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: transform .2s ease, box-shadow .2s ease;
        }

        .review-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .stars {
            color: var(--c-accent);
            letter-spacing: 3px;
            font-size: 15px;
            margin-bottom: 12px;
        }

        .review-card>p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--c-body);
            margin-bottom: 18px;
        }

        .reviewer {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: #fff;
            font-size: 15px;
            flex-shrink: 0;
        }

        .avatar-a {
            background: #3F8C7B;
        }

        .avatar-b {
            background: #0B3D35;
        }

        .avatar-c {
            background: #C08B32;
        }

        .reviewer strong {
            display: block;
            font-size: 15px;
            color: var(--c-primary-dark);
            line-height: 1.4;
        }

        .reviewer small {
            color: var(--c-weak);
            font-size: 13px;
        }

        /* Section: fragments */
        .fragment-section {
            background: #fff;
            border-top: 1px solid rgba(223, 232, 229, 0.7);
        }

        .fragment-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .frag-card {
            background: #fff;
            border: 1px solid var(--c-line);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform .25s ease, box-shadow .25s ease;
            display: flex;
            flex-direction: column;
        }

        .frag-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .frag-media {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .frag-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }

        .frag-card:hover .frag-media img {
            transform: scale(1.04);
        }

        .frag-media .badge {
            position: absolute;
            left: 12px;
            top: 12px;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(4px);
            box-shadow: 0 2px 8px rgba(11, 61, 53, 0.08);
        }

        .frag-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex: 1;
        }

        .frag-body h3 {
            font-size: 18px;
            line-height: 1.45;
            color: var(--c-primary-dark);
        }

        .frag-body p {
            font-size: 14px;
            color: var(--c-muted);
            line-height: 1.75;
            flex: 1;
        }

        .frag-link {
            margin-top: 8px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--c-primary);
            font-size: 14px;
            font-weight: 600;
        }

        .frag-link span {
            transition: transform .2s ease;
        }

        .frag-link:hover {
            color: var(--c-primary-press);
        }

        .frag-link:hover span {
            transform: translateX(4px);
        }

        /* Step section */
        .steps-section {
            background: var(--c-bg);
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: #fff;
            border: 1px solid rgba(223, 232, 229, 0.9);
            border-radius: var(--radius-card);
            padding: 26px 24px 28px;
            box-shadow: var(--shadow-card);
            transition: transform .2s, box-shadow .2s;
            position: relative;
        }

        .step-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .step-num span {
            font-family: var(--font-mono);
            font-size: 24px;
            font-weight: 700;
            color: var(--c-primary);
            line-height: 1;
        }

        .step-num::after {
            content: "";
            height: 1px;
            flex: 1;
            background: var(--c-line);
        }

        .step-card h3 {
            font-size: 18px;
            color: var(--c-primary-dark);
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--c-muted);
            line-height: 1.8;
        }

        /* News section */
        .news-section {
            background: #fff;
            border-top: 1px solid rgba(223, 232, 229, 0.6);
            border-bottom: 1px solid rgba(223, 232, 229, 0.6);
        }

        .news-panel {
            background: #fff;
            border: 1px solid var(--c-line);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 22px 26px;
            border-bottom: 1px solid var(--c-line);
            transition: background .2s ease;
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: #F4F8F6;
        }

        .news-cate {
            min-width: 120px;
        }

        .news-main {
            flex: 1;
            min-width: 0;
        }

        .news-main h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--c-primary-dark);
            transition: color .2s;
        }

        .news-main h3 a {
            position: relative;
        }

        .news-item:hover .news-main h3 {
            color: var(--c-primary);
        }

        .news-main p {
            font-size: 14px;
            color: var(--c-muted);
            margin-top: 4px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-aside {
            display: flex;
            align-items: center;
            gap: 22px;
            flex-shrink: 0;
        }

        .news-aside time {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--c-weak);
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            font-weight: 600;
            color: var(--c-primary);
            transition: color .2s, transform .2s;
        }

        .news-link:hover {
            color: var(--c-primary-press);
            transform: translateX(2px);
        }

        .news-empty {
            min-height: 210px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 8px;
            text-align: center;
        }

        .news-empty .empty-icon {
            width: 46px;
            height: 46px;
            border: 1px solid var(--c-line);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c-weak);
            margin-bottom: 4px;
        }

        .news-empty p {
            font-weight: 600;
            color: var(--c-primary-dark);
        }

        /* CTA dark */
        .cta-dark {
            background: var(--c-primary-dark);
            color: #fff;
            padding: 92px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-dark::after {
            content: "";
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 38%;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .cta-wrap {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .cta-dark h2 {
            font-size: clamp(30px, 4vw, 42px);
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .cta-dark .lead {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.85;
        }

        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cta-mini {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: var(--radius-card);
            padding: 24px;
            backdrop-filter: blur(6px);
        }

        .cta-mini strong {
            display: block;
            font-size: 18px;
            margin-bottom: 14px;
        }

        .cta-mini ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-mini li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.82);
        }

        .cta-mini li::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--c-accent);
        }

        /* FAQ */
        .faq-section {
            background: #F7F9F8;
        }

        .faq-list {
            max-width: 900px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--c-line);
            border-radius: var(--radius-card);
            padding: 0;
            transition: box-shadow .2s, border-color .2s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-item.open {
            border-color: rgba(15, 110, 96, 0.28);
            box-shadow: var(--shadow-card);
        }

        .faq-q {
            width: 100%;
            border: none;
            background: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 20px 24px;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--c-primary-dark);
            border-radius: var(--radius-card);
            cursor: pointer;
            font-family: inherit;
        }

        .faq-icon {
            width: 32px;
            height: 32px;
            flex-shrink: 0;
            position: relative;
            border-radius: 10px;
            background: var(--c-primary-soft);
            transition: background .2s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--c-primary);
            border-radius: 4px;
            transition: transform .28s ease, background .2s;
        }

        .faq-icon::before {
            width: 14px;
            height: 2px;
            transform: translate(-50%, -50%);
        }

        .faq-icon::after {
            width: 2px;
            height: 14px;
            transform: translate(-50%, -50%);
        }

        .faq-item.open .faq-icon {
            background: var(--c-primary-soft);
        }

        .faq-item.open .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
            opacity: 0;
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-inner {
            padding: 0 24px 22px;
            color: var(--c-muted);
            font-size: 15px;
            line-height: 1.85;
            max-width: 820px;
        }

        .faq-inner p+p {
            margin-top: 10px;
        }

        /* Footer */
        .site-footer {
            background: #0B322D;
            color: rgba(255, 255, 255, 0.72);
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.8fr 0.9fr 1fr;
            gap: 40px;
            padding: 62px 0 46px;
        }

        .footer-brand .brand-name {
            color: #fff;
        }

        .footer-brand .brand-name small {
            color: rgba(255, 255, 255, 0.52);
        }

        .footer-desc {
            margin-top: 16px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.58);
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }

        .footer-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-list a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.66);
            display: inline-block;
            transition: color .2s, transform .2s;
        }

        .footer-list a:hover {
            color: #fff;
            transform: translateX(3px);
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 2;
            color: rgba(255, 255, 255, 0.64);
        }

        .footer-contact a {
            color: rgba(255, 255, 255, 0.8);
        }

        .footer-bottom {
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1280px) {
            .fragment-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-grid {
                gap: 40px;
            }
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                padding: 60px 0 64px;
            }
            .hero-copy {
                max-width: 760px;
            }
            .hero-visual {
                min-height: 520px;
                margin-top: 20px;
            }
            .mock-card {
                position: relative;
                left: auto;
                right: auto;
                margin: 0 auto;
                transform: none;
            }
            .mock-card:hover {
                transform: translateY(-4px);
            }
            .step-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .review-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-wrap {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .nav-links a {
                padding: 0 10px;
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .mobile-drawer {
                display: flex;
            }
            .hero-grid {
                gap: 50px;
                padding: 48px 0 70px;
            }
            .hero h1 {
                font-size: 36px;
            }
            .hero-visual {
                min-height: 470px;
            }
            .mock-card {
                width: 100%;
                max-width: 480px;
            }
            .float-chip {
                display: none;
            }
            .fragment-grid {
                grid-template-columns: 1fr;
            }
            .step-grid {
                grid-template-columns: 1fr;
            }
            .review-grid {
                grid-template-columns: 1fr;
            }
            .news-aside {
                display: none;
            }
            .news-item {
                align-items: flex-start;
                flex-direction: column;
                gap: 8px;
                padding: 20px 18px;
            }
            .news-cate {
                min-width: auto;
            }
            .sec-head--split {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-dark {
                padding: 60px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                padding: 48px 0 34px;
            }
            .faq-q {
                font-size: 16px;
                padding: 18px 18px;
            }
            .faq-inner {
                padding: 0 18px 18px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .mock-content {
                padding: 22px 18px;
            }
            .mock-card {
                border-radius: 20px;
            }
            .hero-visual {
                min-height: 420px;
            }
            .container {
                width: 90%;
            }
        }

        @media (orientation: landscape) and (max-width: 900px) {
            .hero-visual {
                min-height: 460px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0F6E60;
            --primary-deep: #0B3D35;
            --primary-press: #0A574C;
            --primary-soft: #E7F2EF;
            --accent: #F0B429;
            --accent-soft: #FDF1D7;
            --text-main: #162A26;
            --text-sub: #4C6A64;
            --text-weak: #829A94;
            --border-color: #DFE8E5;
            --bg-body: #F2F4F2;
            --bg-white: #FFFFFF;
            --danger: #B42318;
            --success: #0F6E60;

            --radius-card: 20px;
            --radius-control: 12px;
            --radius-window: 24px;
            --shadow-card: 0 2px 8px rgba(11, 61, 53, 0.06);
            --shadow-hover: 0 8px 24px rgba(11, 61, 53, 0.12);
            --shadow-float: 0 20px 52px rgba(11, 61, 53, 0.16);

            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, monospace;
            --container: 1280px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            color: var(--text-main);
            background: var(--bg-body);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            display: block;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        ul,
        ol {
            padding: 0;
            margin: 0;
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        p {
            margin: 0;
        }

        ::selection {
            background: var(--primary-soft);
            color: var(--primary-deep);
        }

        .container {
            width: min(var(--container), 100% - 48px);
            margin: 0 auto;
        }

        .section {
            padding: 92px 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border: 1px solid transparent;
            border-radius: var(--radius-control);
            font-family: var(--font-sans);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease-out;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--primary-press);
            border-color: var(--primary-press);
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(11, 61, 53, 0.14);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary-deep);
            border-color: #C7D8D3;
        }

        .btn-outline:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px var(--primary-soft), 0 0 0 6px rgba(15, 110, 96, 0.18);
        }

        .btn-accent {
            background: var(--accent);
            color: #3a2b00;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: #e8a91f;
            border-color: #e8a91f;
            color: #2a1d00;
            transform: translateY(-1px);
        }

        .section-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }

        .section-kicker::before {
            content: "";
            width: 20px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(28px, 3vw, 40px);
            line-height: 1.3;
            color: var(--text-main);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .section-lead {
            margin-top: 16px;
            max-width: 780px;
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.9;
        }

        .section-top {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 52px;
        }

        /* ========= Header ========= */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 120;
            background: rgba(242, 244, 242, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(223, 232, 229, 0.9);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            height: 68px;
            gap: 32px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 34px;
            height: 34px;
            flex: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-deep);
            border-radius: 10px;
            box-shadow: 0 4px 12px rgba(11, 61, 53, 0.16);
        }

        .brand-mark svg {
            width: 22px;
            height: 22px;
            fill: none;
        }

        .brand-name {
            display: flex;
            align-items: baseline;
            gap: 6px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.01em;
            line-height: 1.2;
        }

        .brand-name small {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-sub);
            letter-spacing: 0.03em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2px;
            margin-left: auto;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            height: 68px;
            padding: 0 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-sub);
            border-radius: 0;
            transition: color 0.2s ease-out, background 0.2s ease-out;
        }

        .nav-links a:hover {
            color: var(--primary-deep);
            background: rgba(231, 242, 239, 0.8);
        }

        .nav-links a::after {
            content: "";
            position: absolute;
            left: 20px;
            right: 20px;
            bottom: 14px;
            height: 2px;
            border-radius: 2px;
            background: transparent;
            transform: scaleX(0.6);
            transition: transform 0.2s ease-out;
        }

        .nav-links a.active {
            color: var(--primary-deep);
            font-weight: 600;
        }

        .nav-links a.active::after {
            background: var(--primary);
            transform: scaleX(1);
        }

        .nav-cta {
            display: flex;
            align-items: center;
            margin-left: 14px;
        }

        .nav-cta .btn {
            height: 40px;
            padding: 0 18px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--border-color);
            border-radius: 10px;
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.25s ease-out, opacity 0.2s ease-out;
        }

        .nav-toggle.is-open span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .nav-toggle.is-open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.is-open span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .nav-panel {
            display: none;
        }

        /* ========= Hero ========= */
        .cat-hero {
            position: relative;
            background:
                linear-gradient(100deg, rgba(11, 61, 53, 0.06), rgba(242, 244, 242, 0.92) 52%),
                url('/assets/images/backpic/back-2.png') no-repeat center right / cover;
            padding: 96px 0 56px;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            right: 10%;
            bottom: 6%;
            width: 160px;
            height: 160px;
            background-image: radial-gradient(rgba(15, 110, 96, 0.13) 1px, transparent 1px);
            background-size: 16px 16px;
            border-radius: 50%;
            pointer-events: none;
        }

        .cat-hero .containers {
            position: relative;
            z-index: 2;
        }

        .hero-cat-main {
            display: grid;
            grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
            gap: 52px;
            align-items: center;
        }

        .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            border: 1px solid rgba(15, 110, 96, 0.15);
            color: var(--primary-deep);
            font-size: 14px;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 999px;
        }

        .hero-kicker .pulse-dot {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            box-shadow: 0 0 0 0 rgba(15, 110, 96, 0.4);
        }

        .cat-hero h1 {
            margin-top: 26px;
            font-size: clamp(34px, 4.6vw, 58px);
            line-height: 1.22;
            color: var(--text-main);
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .cat-hero h1 .thin {
            font-weight: 500;
            display: block;
            color: var(--primary-deep);
        }

        .cat-hero h1 .highlight {
            color: var(--primary);
        }

        .hero-lead {
            margin-top: 22px;
            max-width: 600px;
            color: var(--text-sub);
            font-size: 16px;
            line-height: 1.95;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            margin-top: 34px;
            flex-wrap: wrap;
        }

        .hero-proof {
            display: flex;
            flex-wrap: wrap;
            gap: 22px 34px;
            margin-top: 34px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }

        .hero-proof li {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-proof strong {
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.02em;
        }

        .hero-proof span {
            font-size: 13px;
            color: var(--text-weak);
        }

        .hero-visual-panel {
            background: var(--bg-white);
            border-radius: var(--radius-window);
            box-shadow: var(--shadow-hover);
            padding: 22px;
            border: 1px solid rgba(223, 232, 229, 0.9);
        }

        .visual-dots {
            display: flex;
            gap: 6px;
            align-items: center;
            padding-bottom: 18px;
            border-bottom: 1px solid var(--border-color);
        }

        .visual-dots i {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #cbdad6;
        }

        .visual-dots i:nth-child(2) {
            background: var(--border-color);
        }

        .visual-window {
            padding: 22px 18px 10px;
        }

        .visual-brand-row {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
        }

        .visual-brand-row .mini-logo {
            width: 26px;
            height: 26px;
            background: var(--primary-deep);
            border-radius: 7px;
        }

        .visual-brand-row span {
            font-size: 15px;
            font-weight: 700;
        }

        .form-row-demo {
            margin-bottom: 16px;
        }

        .form-row-demo label {
            display: block;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-sub);
            margin-bottom: 6px;
        }

        .fake-input {
            width: 100%;
            height: 42px;
            background: #fbfcfb;
            border: 1px solid #c9d8d4;
            border-radius: 10px;
            display: flex;
            align-items: center;
            padding: 0 12px;
            font-size: 14px;
            color: var(--text-weak);
            transition: border-color 0.2s ease-out;
        }

        .fake-input.done {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 110, 96, 0.1);
        }

        .fake-input.error-text {
            border-color: var(--danger);
            box-shadow: 0 0 0 3px rgba(180, 35, 24, 0.08);
        }

        .fake-btn-block {
            width: 100%;
            height: 42px;
            border: none;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 18px;
            cursor: default;
        }

        .visual-hint {
            margin: 14px 0 0;
            padding: 12px 14px;
            background: var(--primary-soft);
            border-radius: 12px;
            color: var(--primary-deep);
            font-size: 13px;
            text-align: center;
        }

        /* ========= Category chapter nav ========= */
        .chapter-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 68px;
            z-index: 90;
            box-shadow: 0 2px 10px rgba(11, 61, 53, 0.03);
        }

        .chapter-nav {
            display: flex;
            gap: 6px;
            align-items: stretch;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 12px 0;
        }

        .chapter-nav::-webkit-scrollbar {
            display: none;
        }

        .chapter-nav a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            flex: none;
            height: 38px;
            padding: 0 16px;
            background: #f7f9f8;
            border: 1px solid var(--border-color);
            border-radius: 999px;
            color: var(--text-sub);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.2s ease-out;
        }

        .chapter-nav a:hover {
            background: var(--primary-soft);
            border-color: rgba(15, 110, 96, 0.2);
            color: var(--primary-deep);
        }

        .chapter-nav a i {
            font-style: normal;
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--primary);
        }

        /* ===== Spec mosaic grid ===== */
        .spec-grid-section {
            background: var(--bg-white);
        }

        .spec-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 24px;
        }

        .spec-card {
            grid-column: span 6;
            background: #fbfcfb;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.22s ease-out, box-shadow 0.22s ease-out;
        }

        .spec-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .spec-card.large {
            grid-column: span 7;
        }

        .spec-card.medium {
            grid-column: span 5;
        }

        .spec-card.full-wide {
            grid-column: span 8;
        }

        .spec-card.small-wide {
            grid-column: span 4;
        }

        .spec-figure {
            margin: 10px 10px 0;
            overflow: hidden;
            border-radius: 14px;
            background: var(--primary-soft);
        }

        .spec-figure img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform 0.3s ease-out;
        }

        .spec-card:hover .spec-figure img {
            transform: scale(1.025);
        }

        .spec-content {
            padding: 20px;
        }

        .spec-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 34px;
            height: 28px;
            padding: 0 10px;
            border-radius: 999px;
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-soft);
            vertical-align: middle;
        }

        .spec-tag {
            display: inline-flex;
            padding: 5px 10px;
            background: var(--accent-soft);
            color: #8a5a03;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-left: 8px;
        }

        .spec-content h3 {
            margin-top: 14px;
            font-size: 20px;
            line-height: 1.4;
            color: var(--text-main);
        }

        .spec-content p {
            margin-top: 10px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.85;
        }

        .mini-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 18px;
            padding: 16px 16px 16px 20px;
            background: #f1f6f4;
            border-radius: 12px;
        }

        .mini-list li {
            position: relative;
            padding-left: 18px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        .mini-list li::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0.72em;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* ===== Category page feedback section ===== */
        .variables-section {
            background: var(--bg-body);
        }

        .variable-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) minmax(0, 0.94fr);
            gap: 56px;
            align-items: start;
        }

        .variable-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .variable-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 20px;
            transition: box-shadow 0.2s ease-out, transform 0.2s ease-out;
        }

        .variable-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .swatch {
            flex: none;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            box-shadow: inset 0 0 0 1px rgba(11, 61, 53, 0.08);
        }

        .swatch-primary {
            background: #0F6E60;
        }

        .swatch-deep {
            background: #0B3D35;
        }

        .swatch-accent {
            background: #F0B429;
        }

        .variable-copy {
            flex: 1;
        }

        .variable-copy strong {
            display: block;
            font-size: 17px;
            margin-bottom: 6px;
        }

        .variable-copy p {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        .variable-code {
            flex: none;
            align-self: center;
            padding: 4px 10px;
            background: var(--primary-soft);
            border-radius: 8px;
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--primary-deep);
        }

        .visual-demo-card {
            position: sticky;
            top: 150px;
            background: #ffffff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-hover);
            padding: 30px;
        }

        .visual-demo-card::before {
            content: "";
            display: block;
            width: 64px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin-bottom: 20px;
        }

        .visual-demo-card h3 {
            font-size: 22px;
        }

        .visual-demo-card .lead-md {
            margin-top: 8px;
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }

        .demo-stack {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .demo-field {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .demo-field label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-sub);
        }

        .demo-field label .state-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            display: inline-block;
        }

        .demo-field.is-ok .state-dot {
            background: var(--success);
        }

        .demo-field.is-error .state-dot {
            background: var(--danger);
        }

        .demo-field .fake-input {
            cursor: default;
        }

        .demo-field.is-ok .fake-input {
            border-color: var(--success);
            box-shadow: 0 0 0 3px rgba(15, 110, 96, 0.09);
        }

        .demo-field.is-error .fake-input {
            border-color: var(--danger);
            box-shadow: 0 0 0 3px rgba(180, 35, 24, 0.07);
        }

        .field-state {
            font-style: normal;
            font-size: 13px;
            line-height: 1.6;
        }

        .demo-field.is-ok .field-state {
            color: var(--success);
        }

        .demo-field.is-error .field-state {
            color: var(--danger);
        }

        .check-line {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px dashed var(--border-color);
            margin-top: 6px;
        }

        .check-line span {
            font-size: 13px;
            color: var(--text-weak);
        }

        .lock-note {
            background: var(--primary-soft);
            border-radius: 12px;
            text-align: center;
            font-size: 13px;
            color: var(--primary-deep);
            padding: 14px 12px;
            margin-top: 10px;
        }

        /* ===== Scenario section ===== */
        .scenario-section {
            background: #fff;
        }

        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .scenario-row {
            display: grid;
            grid-template-columns: 180px 1fr 210px;
            gap: 26px;
            align-items: center;
            background: #fbfcfb;
            border: 1px solid var(--border-color);
            border-left: 4px solid var(--primary);
            border-radius: 16px;
            padding: 26px 28px;
            transition: box-shadow 0.22s ease-out, transform 0.22s ease-out;
        }

        .scenario-row:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(3px);
        }

        .scenario-row .scene-no {
            font-family: var(--font-mono);
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.02em;
        }

        .scenario-copy h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .scenario-copy p {
            color: var(--text-sub);
            font-size: 14px;
            line-height: 1.8;
        }

        .scenario-more {
            text-align: right;
        }

        .scenario-more a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: gap 0.2s ease-out;
        }

        .scenario-more a:hover {
            gap: 12px;
            color: var(--primary-press);
        }

        /* ===== Four-step flow ===== */
        .method-section {
            background: var(--bg-body);
        }

        .method-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 52px;
        }

        .method-card {
            position: relative;
            background: #fff;
            border-radius: 18px;
            border: 1px solid var(--border-color);
            padding: 28px 22px 22px;
            transition: box-shadow 0.2s ease-out, transform 0.2s ease-out;
        }

        .method-card:hover {
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .method-step {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--primary-soft);
            font-family: var(--font-mono);
            color: var(--primary-deep);
            font-size: 14px;
            font-weight: 700;
        }

        .method-card h3 {
            margin-top: 18px;
            font-size: 18px;
        }

        .method-card p {
            margin-top: 10px;
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.85;
        }

        .method-accent {
            border-top: 3px solid var(--accent);
        }

        /* ===== CTA section ===== */
        .cta-dark {
            background: var(--primary-deep);
            border-radius: 26px;
            padding: 76px 48px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-float);
            margin: 70px 0;
        }

        .cta-dark::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -100px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 180, 41, 0.18) 0%, transparent 70%);
        }

        .cta-inner {
            max-width: 680px;
            z-index: 2;
            position: relative;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(26px, 3.2vw, 40px);
            line-height: 1.35;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.76);
            font-size: 16px;
            margin-top: 18px;
            line-height: 1.9;
        }

        .cta-inner .btn-row {
            display: flex;
            gap: 14px;
            margin-top: 30px;
            flex-wrap: wrap;
        }

        .cta-arrow {
            transition: transform 0.2s ease-out;
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.4);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: #fff;
        }

        .cta-footer-note {
            margin-top: 22px;
            color: rgba(255, 255, 255, 0.42);
            font-size: 13px;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding-bottom: 40px;
            background: var(--bg-white);
        }

        .faq-wrap {
            max-width: 880px;
            margin: 46px auto 0;
        }

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #ffffff;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            overflow: hidden;
            transition: box-shadow 0.2s ease-out, border-color 0.2s ease-out;
        }

        details.faq-item summary {
            list-style: none;
        }

        .faq-item .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            font-size: 17px;
            font-weight: 600;
            padding: 22px 24px;
            line-height: 1.5;
            cursor: pointer;
            user-select: none;
            position: relative;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-icon {
            flex: none;
            position: relative;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: var(--primary-soft);
            transition: transform 0.3s ease-out, background 0.2s ease-out;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: var(--primary);
            transform: translate(-50%, -50%);
            border-radius: 2px;
        }

        .faq-icon::before {
            width: 12px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 12px;
        }

        details[open] .faq-icon {
            background: var(--primary);
            transform: rotate(45deg);
        }

        details[open] .faq-icon::before,
        details[open] .faq-icon::after {
            background: #fff;
        }

        .faq-answer {
            padding: 0 24px 22px 24px;
            color: var(--text-sub);
            font-size: 15px;
            line-height: 1.9;
        }

        .faq-answer p+ul {
            margin-top: 12px;
        }

        .faq-answer ul {
            padding-left: 16px;
            list-style: disc;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 28px;
        }

        .site-footer .brand {
            color: #fff;
        }

        .site-footer .brand-name {
            color: #fff;
        }

        .site-footer .brand-name small {
            color: rgba(255, 255, 255, 0.62);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.35fr 0.9fr 0.9fr 1.1fr;
            gap: 48px;
            margin-bottom: 44px;
        }

        .footer-desc {
            margin-top: 18px;
            max-width: 320px;
            color: rgba(255, 255, 255, 0.62);
            line-height: 1.8;
            font-size: 14px;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 22px;
            letter-spacing: 0.02em;
        }

        .footer-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-list a {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            width: fit-content;
            line-height: 1.5;
            transition: color 0.2s ease-out;
            border-bottom: 1px solid transparent;
        }

        .footer-list a:hover {
            color: #fff;
            border-bottom-color: rgba(255, 255, 255, 0.45);
        }

        .footer-contact p {
            color: rgba(255, 255, 255, 0.62);
            font-size: 14px;
            line-height: 1.9;
        }

        .footer-contact a {
            color: var(--accent);
            font-family: var(--font-mono);
            font-size: 14px;
            word-break: break-all;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            color: rgba(255, 255, 255, 0.45);
            font-size: 13px;
            display: flex;
            justify-content: space-between;
            gap: 8px;
            flex-wrap: wrap;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1200px) {
            .container {
                width: calc(100% - 40px);
            }

            .scenario-row {
                grid-template-columns: 120px 1fr 160px;
                padding: 22px;
            }
        }

        @media (max-width: 1024px) {
            .section {
                padding: 76px 0;
            }

            .nav-links {
                gap: 0;
            }

            .nav-links a {
                padding: 0 10px;
                font-size: 14px;
            }

            .nav-cta {
                margin-left: 8px;
            }

            .hero-cat-main {
                gap: 40px;
            }

            .variable-layout {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .visual-demo-card {
                position: static;
            }

            .spec-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .spec-card,
            .spec-card.large,
            .spec-card.medium,
            .spec-card.full-wide,
            .spec-card.small-wide {
                grid-column: span 1;
            }

            .method-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .faq-wrap {
                margin-top: 36px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 40px;
            }
        }

        @media (max-width: 920px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .nav-panel {
                display: block;
                position: absolute;
                left: 12px;
                right: 12px;
                top: 70px;
                background: #ffffff;
                border: 1px solid var(--border-color);
                border-radius: 16px;
                padding: 12px;
                box-shadow: var(--shadow-float);
                opacity: 0;
                visibility: hidden;
                transform: translateY(-8px);
                transition: all 0.22s ease-out;
            }

            .nav-panel.open {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }

            .nav-panel a {
                display: block;
                padding: 14px 16px;
                border-radius: 12px;
                color: var(--text-sub);
                font-size: 15px;
                border-bottom: 1px solid #eef3f1;
            }

            .nav-panel a:last-child {
                border-bottom: none;
            }

            .nav-panel a:hover,
            .nav-panel a.active {
                background: var(--primary-soft);
                color: var(--primary-deep);
            }

            .hero-cat-main {
                grid-template-columns: 1fr;
            }

            .hero-visual-panel {
                max-width: 430px;
            }

            .spec-grid,
            .method-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 62px 0;
            }

            .chapter-wrap {
                top: 66px;
            }

            .chapter-nav a {
                height: 36px;
                padding: 0 13px;
                font-size: 13px;
            }

            .scenario-row {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .scenario-more {
                text-align: left;
            }

            .method-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 600px) {
            .container {
                width: calc(100% - 28px);
            }

            .section-title {
                font-size: 28px;
            }

            .section-lead {
                font-size: 15px;
            }

            .cat-hero {
                padding: 68px 0 40px;
            }

            .cat-hero h1 {
                font-size: 34px;
            }

            .hero-actions .btn {
                width: 100%;
                padding: 0 14px;
            }

            .hero-proof {
                gap: 12px;
                justify-content: space-between;
            }

            .spec-grid,
            .method-grid {
                grid-template-columns: 1fr;
            }

            .spec-figure {
                margin: 8px 8px 0;
            }

            .visual-demo-card {
                padding: 22px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
                margin-bottom: 32px;
            }

            .site-footer {
                padding: 48px 0 24px;
            }

            .cta-dark {
                padding: 44px 26px;
                border-radius: 20px;
            }
        }

/* roulang page: article */
:root {
            --primary: #0F6E60;
            --primary-dark: #0B3D35;
            --primary-press: #0A574C;
            --primary-bg: #E7F2EF;
            --accent: #F0B429;
            --accent-soft: #FDF1D7;
            --text: #162A26;
            --text-2: #4C6A64;
            --text-muted: #829A94;
            --line: #DFE8E5;
            --page-bg: #F2F4F2;
            --white: #FFFFFF;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow-sm: 0 2px 8px rgba(11, 61, 53, 0.06);
            --shadow-md: 0 8px 24px rgba(11, 61, 53, 0.12);
            --shadow-lg: 0 20px 52px rgba(11, 61, 53, 0.16);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--page-bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            text-rendering: optimizeLegibility;
        }

        img {
            display: block;
            max-width: 100%;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(15, 110, 96, 0.3);
            outline-offset: 2px;
            border-radius: 8px;
        }

        .container {
            width: min(1140px, 92%);
            margin-inline: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 22px;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            cursor: pointer;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--primary-press);
            transform: translateY(-1px);
            box-shadow: 0 6px 14px rgba(15, 110, 96, 0.18);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(15, 110, 96, 0.16);
        }

        .btn-outline {
            background: #fff;
            color: var(--primary);
            border-color: var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-bg);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }

        .btn-accent:hover {
            background: #E0A322;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(240, 180, 41, 0.25);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            line-height: 1.4;
        }

        .tag-light {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .tag-amber {
            background: var(--accent-soft);
            color: var(--primary-dark);
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 80;
            background: rgba(242, 244, 242, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: background .2s ease, border-color .2s ease, box-shadow .2s ease;
        }

        .site-header.is-scrolled {
            background: rgba(255, 255, 255, 0.97);
            border-bottom-color: var(--line);
            box-shadow: var(--shadow-sm);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 20px;
            min-height: 68px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex: none;
        }

        .brand-mark {
            display: inline-flex;
            width: 36px;
            height: 36px;
            flex: none;
            align-items: center;
            justify-content: center;
            background: var(--primary-dark);
            border-radius: 11px;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
        }

        .brand-mark svg {
            width: 20px;
            height: 20px;
            display: block;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.4px;
            line-height: 1.1;
            white-space: nowrap;
        }

        .brand-name small {
            display: block;
            font-size: 11px;
            font-weight: 500;
            color: var(--text-muted);
            letter-spacing: 1.4px;
            margin-top: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
        }

        .nav-links > a {
            position: relative;
            display: inline-block;
            padding: 9px 13px;
            border-radius: 10px;
            color: var(--text-2);
            font-size: 14.5px;
            font-weight: 500;
            transition: background .2s ease, color .2s ease;
        }

        .nav-links > a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }

        .nav-links > a.active {
            color: var(--primary-dark);
            font-weight: 600;
        }

        .nav-links > a.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

        .nav-cta {
            margin-left: 6px;
            flex: none;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            width: 40px;
            height: 40px;
            align-items: center;
            border: 0;
            border-radius: 10px;
            background: transparent;
            cursor: pointer;
            transition: background .2s ease;
        }

        .nav-toggle:hover {
            background: var(--primary-bg);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--text);
            transition: transform .25s ease, opacity .2s ease;
        }

        .site-header.nav-open .nav-toggle span:nth-child(1) {
            transform: translateY(6px) rotate(45deg);
        }

        .site-header.nav-open .nav-toggle span:nth-child(2) {
            opacity: 0;
        }

        .site-header.nav-open .nav-toggle span:nth-child(3) {
            transform: translateY(-6px) rotate(-45deg);
        }

        .article-hero {
            position: relative;
            background-color: var(--primary-dark);
            background-image:
                radial-gradient(rgba(240, 180, 41, 0.18) 1px, transparent 1.2px),
                linear-gradient(135deg, rgba(11, 61, 53, 0.98), rgba(15, 110, 96, 0.92));
            background-size: 26px 26px, auto;
            color: #fff;
            padding: 74px 0 60px;
            overflow: hidden;
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: inline-flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.66);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
            transition: color .2s ease;
        }

        .breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb .breadcrumb-divider {
            color: rgba(255, 255, 255, 0.35);
        }

        .article-head-category {
            display: inline-flex;
            margin-bottom: 16px;
        }

        .article-title {
            font-size: clamp(30px, 4.6vw, 46px);
            line-height: 1.32;
            font-weight: 700;
            max-width: 900px;
            letter-spacing: 0.3px;
            color: #fff;
        }

        .article-hero-desc {
            max-width: 800px;
            margin-top: 18px;
            color: rgba(255, 255, 255, 0.82);
            font-size: 16px;
            line-height: 1.85;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 18px 28px;
            margin-top: 30px;
            color: rgba(255, 255, 255, 0.7);
            font-size: 13.5px;
        }

        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .article-meta .meta-item svg {
            width: 15px;
            height: 15px;
            opacity: 0.85;
        }

        .article-meta .meta-mono {
            font-family: var(--mono);
            letter-spacing: 0.2px;
        }

        .article-main {
            padding: 48px 0 24px;
        }

        .article-container {
            max-width: 940px;
        }

        .article-post {
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: clamp(24px, 5vw, 56px);
            transition: box-shadow .2s ease;
        }

        .article-body {
            font-size: 16.5px;
            color: var(--text);
        }

        .article-body > * + * {
            margin-top: 1.35em;
        }

        .article-body h2 {
            font-size: 25px;
            line-height: 1.4;
            border-top: 2px solid var(--line);
            margin-top: 2.1em;
            padding-top: 1em;
        }

        .article-body h3 {
            font-size: 20px;
            line-height: 1.45;
            border-left: 4px solid var(--primary);
            padding-left: 14px;
            margin-top: 1.8em;
        }

        .article-body h4 {
            font-size: 17px;
            color: var(--primary-dark);
            margin-top: 1.5em;
        }

        .article-body p {
            line-height: 1.9;
            text-align: justify;
            word-break: break-word;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.25em;
        }

        .article-body ul li {
            list-style: disc;
            margin: 0.45em 0;
            line-height: 1.85;
        }

        .article-body ol li {
            list-style: decimal;
            margin: 0.45em 0;
            line-height: 1.85;
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-color: rgba(15, 110, 96, 0.35);
            transition: text-decoration-color .2s ease;
        }

        .article-body a:hover {
            text-decoration-color: var(--primary);
        }

        .article-body img {
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
            margin: 1.8em 0;
            width: auto;
            height: auto;
        }

        .article-body blockquote {
            margin: 1.6em 0;
            padding: 18px 22px;
            background: var(--primary-bg);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--primary-dark);
            font-size: 16px;
        }

        .article-body blockquote p {
            margin: 0;
        }

        .article-body pre {
            background: var(--primary-dark);
            color: #DCEAE6;
            padding: 22px 24px;
            border-radius: 14px;
            overflow-x: auto;
            font-family: var(--mono);
            font-size: 13.5px;
            line-height: 1.75;
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
        }

        .article-body code {
            font-family: var(--mono);
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-size: 0.9em;
            padding: 0.2em 0.45em;
            border-radius: 6px;
        }

        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.6em 0;
            font-size: 15px;
            border-radius: 12px;
            overflow: hidden;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--line);
            padding: 12px 14px;
            text-align: left;
        }

        .article-body th {
            background: var(--primary-bg);
            color: var(--primary-dark);
            font-weight: 600;
        }

        .article-nav {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 16px;
            align-items: stretch;
            margin-top: 28px;
        }

        .article-nav-prev,
        .article-nav-next {
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 4px;
            min-height: 70px;
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-sm);
            padding: 14px 18px;
            transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .article-nav-prev:hover,
        .article-nav-next:hover {
            border-color: rgba(15, 110, 96, 0.4);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
        }

        .article-nav-prev {
            align-items: flex-start;
            text-align: left;
        }

        .article-nav-next {
            align-items: flex-end;
            text-align: right;
        }

        .pager-kicker {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            color: var(--text-muted);
            font-size: 13px;
        }

        .pager-text {
            font-weight: 600;
            color: var(--text);
            font-size: 14.5px;
            transition: color .2s ease;
        }

        .article-nav-prev:hover .pager-text,
        .article-nav-next:hover .pager-text {
            color: var(--primary);
        }

        .back-list {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 96px;
            height: 44px;
            align-self: center;
            padding: 0 18px;
            border-radius: 999px;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: background .2s ease, transform .2s ease;
        }

        .back-list:hover {
            background: #D5E8E4;
            transform: translateY(-1px);
        }

        .related-section {
            margin-top: 76px;
        }

        .section-title {
            text-align: center;
            font-size: clamp(24px, 3vw, 30px);
            font-weight: 700;
            letter-spacing: 0.2px;
            color: var(--text);
        }

        .section-subtitle {
            text-align: center;
            color: var(--text-2);
            font-size: 15px;
            margin-top: 6px;
            margin-bottom: 36px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            display: flex;
            flex-direction: column;
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }

        .related-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--primary-bg);
        }

        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }

        .related-body {
            padding: 20px;
            display: flex;
            flex: 1;
            flex-direction: column;
            gap: 10px;
        }

        .related-body h3 {
            font-size: 17px;
            line-height: 1.5;
            color: var(--text);
            transition: color .2s ease;
        }

        .related-body h3 a:hover {
            color: var(--primary);
        }

        .related-body p {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-link {
            margin-top: auto;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            align-self: flex-start;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: gap .2s ease;
        }

        .related-link:hover {
            gap: 7px;
        }

        .article-cta {
            max-width: 900px;
            margin: 40px auto 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            background: var(--primary-dark);
            border-radius: var(--radius);
            padding: 28px 32px;
            color: #fff;
            box-shadow: var(--shadow-md);
        }

        .article-cta-text {
            display: flex;
            flex-direction: column;
            gap: 5px;
        }

        .article-cta-text strong {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.2px;
        }

        .article-cta-text span {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .article-cta .btn {
            flex: none;
        }

        .article-missing {
            padding: 72px 0;
        }

        .missing-card {
            max-width: 580px;
            margin: 0 auto;
            background: var(--white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            text-align: center;
            padding: 64px 40px;
        }

        .missing-icon {
            width: 88px;
            height: 88px;
            margin: 0 auto 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-bg);
            border-radius: 50%;
            color: var(--primary);
        }

        .missing-card h2 {
            font-size: 26px;
            margin-bottom: 12px;
        }

        .missing-card p {
            color: var(--text-2);
            margin-bottom: 28px;
        }

        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.76);
            padding: 64px 0 0;
            margin-top: 88px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
            gap: 44px;
            padding-bottom: 44px;
        }

        .footer-brand .brand-name {
            color: #fff;
        }

        .footer-brand .brand-name small {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-brand .brand-mark {
            background: rgba(255, 255, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
        }

        .footer-desc {
            color: rgba(255, 255, 255, 0.62);
            line-height: 1.85;
            margin-top: 16px;
            font-size: 14px;
            max-width: 340px;
        }

        .footer-title {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.4px;
        }

        .footer-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-list a,
        .footer-contact a {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
            transition: color .2s ease;
        }

        .footer-list a:hover,
        .footer-contact a:hover {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .footer-contact p {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.58);
            margin-bottom: 12px;
        }

        .footer-contact a {
            color: #fff;
            font-weight: 500;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
            text-align: center;
            letter-spacing: 0.3px;
        }

        @media (max-width: 1080px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 880px) {
            .nav-links,
            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .nav {
                flex-wrap: wrap;
            }

            .site-header.nav-open {
                background: rgba(255, 255, 255, 0.98);
                box-shadow: var(--shadow-sm);
                border-bottom-color: var(--line);
            }

            .site-header.nav-open .nav-links {
                display: flex;
                flex: 0 0 100%;
                order: 3;
                flex-direction: column;
                gap: 4px;
                padding: 16px 0 2px;
                align-items: stretch;
            }

            .site-header.nav-open .nav-links > a {
                padding: 14px 14px;
                font-size: 15px;
                border-radius: 12px;
                white-space: normal;
            }

            .site-header.nav-open .nav-links > a.active::after {
                display: none;
            }

            .site-header.nav-open .nav-links > a.active {
                background: var(--primary-bg);
            }

            .site-header.nav-open .nav-cta {
                display: block;
                flex: 0 0 100%;
                order: 4;
                padding: 10px 0 14px;
                margin-top: 10px;
                border-top: 1px solid var(--line);
            }

            .site-header.nav-open .nav-cta .btn {
                width: 100%;
            }

            .article-hero {
                padding: 52px 0 42px;
            }

            .article-nav {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .back-list {
                min-height: 50px;
                width: 100%;
            }

            .article-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
            }

            .article-cta .btn {
                width: 100%;
            }
        }

        @media (max-width: 640px) {
            .container {
                width: 92%;
            }

            .article-post {
                padding: 22px 18px;
                border-radius: 16px;
            }

            .article-body {
                font-size: 16px;
            }

            .section-subtitle {
                font-size: 14px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 440px) {
            .brand-name {
                font-size: 16px;
            }

            .article-hero {
                padding: 42px 0 34px;
            }

            .article-title {
                font-size: 26px;
            }

            .article-meta {
                gap: 12px 18px;
                font-size: 13px;
            }

            .missing-card {
                padding: 44px 24px;
            }
        }

/* roulang page: category3 */
:root{
  --primary:#0F6E60;
  --primary-dark:#0A574C;
  --brand-deep:#0B3D35;
  --primary-soft:#E7F2EF;
  --amber:#F0B429;
  --amber-soft:#FDF1D7;
  --text-strong:#162A26;
  --text-body:#4C6A64;
  --text-muted:#829A94;
  --line:#DFE8E5;
  --bg-page:#F2F4F2;
  --bg-card:#FFFFFF;
  --danger:#B33636;
  --radius-card:20px;
  --radius-control:12px;
  --radius-panel:24px;
  --shadow-card:0 2px 8px rgba(11,61,53,.06);
  --shadow-hover:0 8px 24px rgba(11,61,53,.12);
  --shadow-float:0 20px 52px rgba(11,61,53,.16);
  --font-ui:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-ui);
  color:var(--text-strong);
  background:var(--bg-page);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.container{max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
h1,h2,h3,h4{line-height:1.3;font-weight:700;text-wrap:balance}
p{text-wrap:pretty}
:focus-visible{outline:3px solid rgba(15,110,96,.35);outline-offset:2px;border-radius:8px}
::selection{background:var(--primary-soft);color:var(--primary-dark)}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:44px;
  padding:0 22px;
  border-radius:var(--radius-control);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  cursor:pointer;
  transition:all .2s ease-out;
  white-space:nowrap;
  line-height:1;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow-hover)}
.btn-primary:active{background:#073E37;transform:translateY(0)}
.btn-ghost{background:transparent;border-color:#C6D8D2;color:var(--brand-deep)}
.btn-ghost:hover{background:var(--primary-soft);border-color:var(--primary)}
.btn-amber{background:var(--amber-soft);color:var(--brand-deep);border:1px solid rgba(240,180,41,.45)}
.btn-amber:hover{background:var(--amber);color:#fff;border-color:var(--amber)}
.btn-light{background:#fff;color:var(--brand-deep);border-color:rgba(255,255,255,.32)}
.btn-light:hover{background:var(--amber-soft);border-color:var(--amber);transform:translateY(-1px)}

/* 标签 */
.badge-label,.tag,.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 12px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:13px;
  font-weight:600;
  line-height:1.3;
}
.tag-amber{background:var(--amber-soft);color:#6A4F08}

/* 头部 */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(223,232,229,.8);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.96);
  box-shadow:0 6px 22px rgba(11,61,53,.06);
}
.site-header .container{
  display:flex;
  align-items:center;
  height:68px;
  gap:28px;
}
.nav{position:relative}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:36px;
  height:36px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--primary);
  border-radius:11px;
  box-shadow:0 4px 10px rgba(15,110,96,.2);
}
.brand-mark svg{width:22px;height:22px;display:block}
.brand-name{
  font-size:21px;
  font-weight:800;
  color:var(--brand-deep);
  letter-spacing:.01em;
  line-height:1.2;
}
.brand-name small{
  font-size:13px;
  font-weight:500;
  color:var(--text-muted);
  margin-left:4px;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:22px;
  margin-left:auto;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 6px;
  color:var(--text-body);
  font-size:15px;
  font-weight:500;
  border-radius:8px;
  transition:color .2s ease,background .2s ease;
}
.nav-links a:hover{color:var(--primary-dark);background:rgba(231,242,239,.65)}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:2px;
  height:3px;
  border-radius:999px;
  background:var(--primary);
}
.nav-cta{margin-left:6px;flex-shrink:0}
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:6px;
  width:44px;
  height:44px;
  border:0;
  background:transparent;
  border-radius:10px;
  cursor:pointer;
  margin-left:auto;
}
.nav-toggle span{
  display:block;
  height:2px;
  width:22px;
  border-radius:3px;
  background:var(--brand-deep);
  transition:all .2s ease;
}

/* Hero */
.hero{
  position:relative;
  min-height:660px;
  display:flex;
  align-items:center;
  padding:64px 0 72px;
  overflow:hidden;
  background-color:#EEF4F0;
  background-image:linear-gradient(rgba(242,244,242,.94),rgba(242,244,242,.86)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.hero::before{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  left:0;
  right:0;
  background-image:radial-gradient(#162A26 0.7px,transparent 0.7px);
  background-size:26px 26px;
  opacity:.05;
  pointer-events:none;
  mask-image:linear-gradient(90deg,#000,transparent 72%);
}
.hero .container{
  position:relative;
  z-index:2;
  width:100%;
}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,1.1fr) minmax(380px,.9fr);
  gap:60px;
  align-items:center;
}
.hero-copy .eyebrow{margin-bottom:22px}
.hero-title{
  font-size:clamp(35px,4.2vw,54px);
  font-weight:800;
  letter-spacing:-.03em;
  color:var(--brand-deep);
  margin:14px 0 18px;
}
.hero-title .mark{
  position:relative;
  color:var(--primary);
}
.hero-lead{
  font-size:17px;
  color:var(--text-body);
  max-width:600px;
  margin:16px 0 28px;
  line-height:1.9;
}
.hero-cta{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
}
.hero-note{
  margin-top:28px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  color:var(--text-muted);
  font-size:14px;
}
.hero-note li{
  list-style:none;
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(255,255,255,.7);
  border:1px solid var(--line);
  padding:8px 14px;
  border-radius:999px;
}
.hero-note li::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--primary);
}

/* Hero 演示卡 */
.login-demo{
  background:#fff;
  border-radius:var(--radius-panel);
  box-shadow:var(--shadow-float);
  overflow:hidden;
  border:1px solid rgba(223,232,229,.7);
}
.ld-top{
  height:48px;
  background:#FBFCFC;
  border-bottom:1px solid var(--line);
  display:flex;
  align-items:center;
  gap:6px;
  padding:0 16px;
}
.ld-top i{
  width:9px;
  height:9px;
  border-radius:50%;
  display:inline-block;
}
.ld-top i:nth-child(1){background:#DCDFDE}
.ld-top i:nth-child(2){background:#D9D4BD}
.ld-top i:nth-child(3){background:#CFE0D9}
.ld-top span{margin-left:12px;font-size:13px;color:var(--text-muted);font-family:var(--font-mono)}
.ld-body{padding:28px 28px 24px}
.ld-logo{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;height:46px;
  border-radius:14px;
  background:var(--primary);
  margin-bottom:14px;
}
.ld-logo svg{width:24px;height:24px}
.ld-title{font-size:18px;font-weight:700;color:var(--brand-deep);margin-bottom:16px}
.field-label{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:13px;
  color:var(--text-body);
  margin:14px 0 6px;
}
.field-label em{font-style:normal;color:var(--text-muted)}
.field-box{
  display:flex;
  align-items:center;
  gap:8px;
  height:44px;
  border:1px solid #CDDAD6;
  border-radius:11px;
  background:#fff;
  padding:0 12px;
  font-size:14px;
  color:var(--text-strong);
}
.field-box.success{border-color:var(--primary)}
.field-box.error{border-color:#CB4C4C;background:#FFF9F9}
.field-box input{
  border:0;
  background:transparent;
  width:100%;
  outline:0;
  font-size:15px;
  color:var(--text-strong);
}
.field-box .state-ok{color:var(--primary);display:flex;align-items:center}
.field-box .state-error{color:#CB4C4C;display:flex;align-items:center}
.ld-message{
  margin-top:8px;
  font-size:13px;
  color:#CB4C4C;
  background:#FFF1F1;
  border-left:3px solid #CB4C4C;
  border-radius:8px;
  padding:7px 12px;
}
.ld-code-row{
  display:flex;
  gap:10px;
  align-items:center;
}
.ld-code-row .field-box{flex:1}
.ld-code-btn{
  height:44px;
  border-radius:11px;
  background:var(--primary-soft);
  border:1px solid #CDE2DC;
  color:var(--primary);
  padding:0 15px;
  font-size:13px;
  font-weight:600;
  white-space:nowrap;
}
.login-demo .btn-primary{
  width:100%;
  margin-top:20px;
  height:44px;
}
.ld-security{
  margin-top:14px;
  display:flex;
  align-items:center;
  gap:10px;
  background:var(--amber-soft);
  border:1px solid #F6E2B8;
  color:#7A6120;
  padding:10px 12px;
  border-radius:12px;
  font-size:13px;
}
.ld-meter{
  display:flex;
  gap:6px;
}
.ld-meter i{width:4px;height:22px;background:var(--line);border-radius:4px;margin-left:5px}
.ld-meter i:nth-child(1){background:var(--amber)}
.ld-meter i:nth-child(2){background:var(--amber)}
.ld-meter i:nth-child(3){background:var(--primary)}
.ld-meter i:nth-child(4){background:var(--primary)}
.ld-meter i:nth-child(5){background:var(--primary)}
.ld-meter-text{
  flex:1;font-size:13px;color:var(--text-muted);
}
.ld-meter-text b{display:block;font-size:14px;color:var(--brand-deep);font-weight:600}
.ld-bottom{
  padding:16px 28px;
  border-top:1px solid var(--line);
  display:flex;
  justify-content:space-between;
  color:var(--text-muted);
  font-size:13px;
  background:#FBFCFC;
}
.ld-bottom a{color:var(--primary);font-weight:600}
.ld-bottom a:hover{text-decoration:underline}

/* Section设置 */
.section{
  padding:92px 0;
}
.section-sm{
  padding:64px 0;
}
.section-head{
  max-width:820px;
  margin-bottom:44px;
}
.section-head h2{
  font-size:clamp(30px,3vw,42px);
  color:var(--brand-deep);
  letter-spacing:-.02em;
  margin:12px 0 12px;
}
.section-head .sub{
  color:var(--text-body);
  font-size:16px;
  line-height:1.8;
}
.center{
  margin-left:auto;
  margin-right:auto;
  text-align:center;
}
.mt-20{margin-top:20px}
.divider{
  height:1px;
  background:var(--line);
  border:0;
  margin:92px 0;
}

/* 速览条 */
.quick-band{
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:34px 0;
}
.quick-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.quick-item{
  display:flex;
  gap:14px;
  padding:18px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
}
.quick-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.quick-icon{
  flex:0 0 42px;
  width:42px;
  height:42px;
  border-radius:12px;
  background:var(--primary-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
}
.quick-item h3{
  font-size:16px;
  margin-bottom:3px;
  color:var(--brand-deep);
}
.quick-item p{font-size:14px;color:var(--text-muted);line-height:1.6}
.quick-item b{font-size:14px;color:var(--text-strong);font-weight:600}

/* QA核心区 */
.qa-lobby{
  background:#fff;
}
.qa-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
}
.qa-card{
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:#fff;
  padding:28px;
  box-shadow:var(--shadow-card);
  transition:box-shadow .2s ease,transform .2s ease;
  display:flex;
  flex-direction:column;
}
.qa-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-2px);
}
.qa-top{
  display:flex;
  align-items:center;
  gap:14px;
  margin-bottom:16px;
}
.qa-num{
  flex:0 0 50px;
  width:50px;
  height:50px;
  background:var(--primary-soft);
  border-radius:16px;
  color:var(--primary);
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:20px;
  font-weight:700;
}
.qa-top .tag{padding:5px 10px;font-size:12px}
.qa-title{
  display:flex;
  align-items:center;
  gap:10px;
}
.qa-title h2{
  font-size:22px;
  color:var(--brand-deep);
  margin:0;
}
.qa-title .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--amber);
}
.qa-card > p{
  font-size:15px;
  color:var(--text-body);
  line-height:1.85;
  margin:2px 0 14px;
}
.checklist{
  list-style:none;
  margin-bottom:20px;
}
.checklist li{
  position:relative;
  padding-left:32px;
  margin:9px 0;
  font-size:15px;
  color:var(--text-body);
  line-height:1.75;
}
.checklist li svg{
  position:absolute;
  top:4px;
  left:0;
  width:20px;
  height:20px;
  color:var(--primary);
  background:var(--primary-soft);
  border-radius:50%;
  padding:3px;
}
.qa-link{
  margin-top:auto;
  border-top:1px solid var(--line);
  padding-top:14px;
  display:flex;
  gap:14px;
  align-items:center;
  font-size:14px;
}
.qa-link a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:38px;
  padding:0 14px;
  border-radius:999px;
  background:var(--primary-soft);
  color:var(--primary-dark);
  font-size:14px;
  font-weight:600;
  transition:background .2s ease,color .2s;
}
.qa-link a:hover{background:var(--primary);color:#fff}
.qa-link span{
  color:var(--text-muted);
  font-size:13px;
}

/* 流程区 */
.process{
  background:linear-gradient(180deg,#F2F4F2 0%,#ECF2EF 100%);
}
.process-grid{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:16px;
  margin-top:40px;
}
.process-step{
  position:relative;
  background:#fff;
  border-radius:18px;
  border:1px solid var(--line);
  padding:24px 18px 22px;
  box-shadow:var(--shadow-card);
  transition:transform .2s,box-shadow .2s;
}
.process-step:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-hover);
}
.step-index{
  font-family:var(--font-mono);
  font-size:15px;
  color:var(--amber);
  font-weight:800;
  letter-spacing:.1em;
}
.process-step h3{
  font-size:17px;
  color:var(--brand-deep);
  margin:8px 0 6px;
}
.process-step p{
  font-size:14px;
  color:var(--text-muted);
  line-height:1.7;
}
.process-step::after{
  content:"→";
  position:absolute;
  top:31px;
  right:-14px;
  color:var(--text-muted);
  font-family:var(--font-mono);
  background:#EEF4F0;
  z-index:2;
  width:24px;
  height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:15px;
  border-radius:10px;
}
.process-step:last-child::after{display:none}

/* 图文协作区块 */
.implementation-guide{
  background:#fff;
}
.guide-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:58px;
  align-items:center;
}
.guide-copy h2{
  font-size:34px;
  color:var(--brand-deep);
  margin:12px 0 14px;
}
.guide-copy > p{
  color:var(--text-body);
  margin-bottom:22px;
  font-size:16px;
  line-height:1.9;
}
.guide-list{
  list-style:none;
  display:grid;
  gap:8px;
  margin-bottom:32px;
}
.guide-list li{
  background:#fff;
  border:1px solid var(--line);
  border-radius:13px;
  padding:13px 16px;
  display:flex;
  gap:10px;
  align-items:center;
  font-size:15px;
  color:var(--text-body);
}
.guide-list li svg{width:20px;height:20px;color:var(--primary);flex-shrink:0}
.guide-list li strong{color:var(--brand-deep);font-weight:600}
.visual-stack{
  border-radius:var(--radius-panel);
  overflow:hidden;
  background:var(--primary-soft);
  border:1px solid #CBDED8;
  box-shadow:var(--shadow-float);
}
.visual-stack img{
  width:100%;
  height:auto;
  object-fit:cover;
}
.visual-caption{
  padding:16px 20px;
  background:#fff;
  display:flex;
  gap:10px;
  align-items:center;
  justify-content:space-between;
  color:var(--text-muted);
  font-size:14px;
}
.visual-caption b{
  color:var(--brand-deep);
  font-size:15px;
}

/* FAQ区块 */
.faq-section{
  background:var(--bg-page);
}
.faq-wrap{
  max-width:900px;
  margin:0 auto;
}
.faq-item{
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow-card);
  margin-bottom:14px;
  overflow:hidden;
  transition:box-shadow .2s ease;
}
.faq-item.open{
  box-shadow:var(--shadow-hover);
}
.faq-trigger{
  width:100%;
  border:0;
  background:transparent;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:22px 26px;
  cursor:pointer;
  text-align:left;
  min-height:60px;
  border-radius:18px;
}
.faq-trigger span:first-child{
  font-size:16px;
  font-weight:700;
  color:var(--brand-deep);
  line-height:1.5;
}
.faq-trigger:hover span:first-child{
  color:var(--primary-dark);
}
.faq-icon{
  flex:0 0 28px;
  width:28px;
  height:28px;
  border-radius:50%;
  background:var(--primary-soft);
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--primary);
  font-size:22px;
  font-weight:400;
  line-height:1;
  transition:transform .25s ease;
}
.faq-item.open .faq-icon{
  transform:rotate(45deg);
  background:var(--amber-soft);
  color:#7A6120;
}
.faq-answer{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .3s ease;
}
.faq-answer-inner{
  overflow:hidden;
}
.faq-answer-inner .inner-text{
  padding:0 26px 22px;
  color:var(--text-body);
  font-size:15px;
  line-height:1.9;
  border-top:1px solid #EEF2F0;
  padding-top:16px;
}
.faq-answer-inner ul{
  padding:0 26px 22px;
  margin:6px 0 0;
  list-style:none;
}
.faq-answer-inner ul li{
  position:relative;
  padding:6px 0 6px 22px;
  color:var(--text-body);
}
.faq-answer-inner ul li::before{
  content:"";
  position:absolute;
  left:2px;
  top:18px;
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--primary);
  opacity:.6;
}

/* CTA区块 */
.cta-block{
  position:relative;
  background:var(--brand-deep);
  border-radius:0;
  color:#fff;
  padding:100px 0;
  overflow:hidden;
}
.cta-block::before{
  content:"";
  position:absolute;
  left:0;top:0;right:0;bottom:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  opacity:.15;
}
.cta-inner{
  position:relative;
  z-index:2;
  text-align:center;
  max-width:800px;
  margin:0 auto;
}
.cta-inner .eyebrow{background:rgba(255,255,255,.14);color:#F4FBF8}
.cta-inner h2{
  font-size:clamp(28px,4vw,44px);
  margin:18px 0 16px;
  color:#fff;
}
.cta-inner p{
  color:rgba(255,255,255,.72);
  margin-bottom:30px;
  font-size:17px;
  line-height:1.8;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
}
.cta-mail{
  font-size:15px;
  color:rgba(255,255,255,.68);
  margin-top:14px;
}
.cta-mail a{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
}

/* 脚部 */
.site-footer{
  background:var(--brand-deep);
  color:rgba(255,255,255,.82);
}
.site-footer a{
  color:rgba(255,255,255,.72);
  transition:color .2s ease;
}
.site-footer a:hover{
  color:#fff;
  text-decoration:underline;
  text-underline-offset:4px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr .9fr .9fr 1.1fr;
  gap:40px;
  padding:74px 0 50px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{
  max-width:340px;
}
.footer-brand .brand-name{
  color:#fff;
}
.footer-desc{
  margin:18px 0 0;
  font-size:14px;
  color:rgba(255,255,255,.68);
  line-height:1.9;
}
.footer-title{
  color:#fff;
  font-size:16px;
  margin-bottom:16px;
  font-weight:700;
}
.footer-list{
  display:grid;
  gap:10px;
  font-size:14px;
}
.footer-contact p{
  font-size:14px;
  line-height:1.8;
  margin-bottom:10px;
  color:rgba(255,255,255,.68);
}
.footer-contact a{
  color:var(--amber);
  font-weight:600;
}
.footer-contact a:hover{color:#fff;text-decoration:underline}
.footer-bottom{
  display:flex;
  justify-content:center;
  align-items:center;
  padding:22px 0;
  color:rgba(255,255,255,.44);
  font-size:13px;
}

/* 响应式:1280*/
@media (max-width:1280px){
  .process-grid{grid-template-columns:repeat(3,1fr);gap:18px}
  .process-step::after{display:none}
  .footer-grid{grid-template-columns:1.2fr .8fr .8fr 1.2fr}
}
/* 响应式:1024*/
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero{min-height:auto;padding:64px 0}
  .container{max-width:980px}
  .quick-grid{grid-template-columns:repeat(2,1fr)}
  .qa-grid{grid-template-columns:1fr}
  .implementation-guide .guide-grid{grid-template-columns:1fr;gap:36px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .nav-cta{display:none}
}
/* 响应式:820 tablet */
@media (max-width:820px){
  .process-grid{grid-template-columns:1fr 1fr}
  .section{padding:72px 0}
}
/* 移动 */
@media (max-width:768px){
  .site-header .container{
    height:60px;
    gap:12px;
  }
  .site-header{
    background:rgba(255,255,255,.97);
  }
  .nav-toggle{
    display:inline-flex;
  }
  .nav-links{
    display:none;
    position:absolute;
    top:64px;
    left:0;
    right:0;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 20px 40px rgba(11,61,53,.12);
    border-radius:0 0 22px 22px;
    padding:16px;
    gap:4px;
    z-index:50;
    flex-direction:column;
    align-items:stretch;
  }
  body.nav-open .nav-links{
    display:flex;
  }
  .nav-links a{
    min-height:48px;
    padding:0 16px;
    display:flex;
    border-radius:12px;
    font-size:16px;
  }
  .nav-links a.active{
    background:var(--primary-soft);
  }
  .nav-links a.active::after{
    display:none;
  }
  .brand-name{font-size:18px}
  .brand-name small{font-size:12px;display:block;margin:0}
  .brand{gap:7px}
  html{scroll-padding-top:72px}
  .hero{
    padding:44px 0 52px;
  }
  .hero-title{
    font-size:32px;
  }
  .hero-lead{
    font-size:16px;
  }
  .hero-note li{
    padding:6px 10px;
  }
  .ld-body{
    padding:22px 18px 18px;
  }
  .ld-bottom{
    padding:14px 18px;
    flex-wrap:wrap;
  }
  .quick-grid{
    grid-template-columns:1fr;
    gap:14px;
  }
  .section{
    padding:58px 0;
  }
  .section-head h2{
    font-size:28px;
  }
  .qa-card{
    padding:20px;
  }
  .qa-title h2{
    font-size:19px;
  }
  .qa-top{
    margin-bottom:12px;
  }
  .process-grid{
    grid-template-columns:1fr;
    margin-top:24px;
  }
  .process-step{
    padding:18px;
  }
  .guide-list li{
    font-size:14px;
    align-items:flex-start;
    line-height:1.6;
  }
  .cta-block{
    padding:70px 0;
  }
  .cta-actions .btn{
    width:100%;
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:32px;
    padding:52px 0 36px;
  }
  .faq-trigger{
    padding:17px 16px;
    gap:12px;
  }
  .faq-trigger span:first-child{
    font-size:15px;
  }
  .faq-answer-inner{
    padding:0 16px 14px;
  }
  .visual-caption{
    align-items:flex-start;
    flex-direction:column;
    gap:6px;
  }
}
@media (max-width:414px){
  .container{
    padding-left:18px;
    padding-right:18px;
  }
  .hero-cta .btn{
    width:100%;
  }
  .quantity-grid{
    grid-template-columns:1fr;
  }
}

/* roulang page: category2 */
:root {
            --primary: #0F6E60;
            --primary-dark: #0B3D35;
            --primary-press: #0A574C;
            --primary-soft: #E7F2EF;
            --accent: #F0B429;
            --accent-soft: #FDF1D7;
            --text: #162A26;
            --text-2: #4C6A64;
            --text-3: #829A94;
            --divider: #DFE8E5;
            --body-bg: #F2F4F2;
            --card-bg: #FFFFFF;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-card: 0 2px 8px rgba(11, 61, 53, 0.06);
            --shadow-hover: 0 8px 24px rgba(11, 61, 53, 0.12);
            --shadow-float: 0 20px 52px rgba(11, 61, 53, 0.16);
            --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", monospace;
            --header-height: 68px;
            --transition: 0.2s ease-out;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 136px;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }

        h1, h2, h3, h4, p, figure, ul {
            margin: 0;
        }

        ul {
            list-style: none;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

        img {
            max-width: 100%;
            display: block;
        }

        button {
            font: inherit;
            color: inherit;
            background: none;
            border: none;
            cursor: pointer;
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border: 1px solid transparent;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            line-height: 1;
            white-space: nowrap;
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .btn:hover {
            transform: translateY(-1px);
        }

        .btn:active {
            transform: translateY(0);
        }

        .btn-primary {
            background: var(--primary);
            color: #ffffff;
            box-shadow: 0 8px 18px rgba(15, 110, 96, 0.18);
        }

        .btn-primary:hover {
            background: var(--primary-press);
            box-shadow: 0 10px 22px rgba(11, 87, 76, 0.2);
        }

        .btn-secondary {
            background: #ffffff;
            color: var(--primary-dark);
            border-color: #C9DAD5;
        }

        .btn-secondary:hover {
            background: var(--primary-soft);
            border-color: var(--primary);
        }

        .btn-amber {
            background: var(--accent);
            color: var(--primary-dark);
            border-color: var(--accent);
            box-shadow: 0 8px 20px rgba(240, 180, 41, 0.2);
        }

        .btn-amber:hover {
            background: #E6A81F;
            border-color: #E6A81F;
            color: var(--primary-dark);
        }

        .btn-ghost-light {
            background: transparent;
            color: #ffffff;
            border-color: rgba(255, 255, 255, 0.36);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.65);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            border-radius: 99px;
            padding: 6px 13px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .section-kicker {
            color: var(--primary);
            font-weight: 700;
            letter-spacing: 0.08em;
            font-size: 14px;
            text-transform: none;
        }

        .sec {
            padding: 88px 0;
        }

        .sec-white {
            background: #ffffff;
        }

        .sec-tint {
            background: var(--body-bg);
        }

        .section-head {
            max-width: 820px;
            margin-bottom: 46px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .sec-title {
            margin-top: 12px;
            font-size: clamp(28px, 2.4vw, 38px);
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text);
        }

        .sec-desc {
            margin-top: 14px;
            color: var(--text-2);
            font-size: 17px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(242, 244, 242, 0.96);
            border-bottom: 1px solid transparent;
            backdrop-filter: blur(12px);
            transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
        }

        .site-header.scrolled {
            background: rgba(255, 255, 255, 0.98);
            border-bottom-color: var(--divider);
            box-shadow: 0 2px 10px rgba(11, 61, 53, 0.04);
        }

        .nav {
            display: flex;
            align-items: center;
            gap: 18px;
            min-height: var(--header-height);
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            color: var(--text);
        }

        .brand-mark {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 18px rgba(15, 110, 96, 0.18);
        }

        .brand-mark svg {
            display: block;
        }

        .brand-name {
            font-size: 20px;
            line-height: 1.1;
            letter-spacing: 0.01em;
        }

        .brand-name small {
            display: inline-block;
            margin-left: 2px;
            font-size: 12px;
            font-weight: 600;
            color: var(--text-2);
            letter-spacing: 0.04em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            margin-left: 34px;
        }

        .nav-links a {
            position: relative;
            display: inline-block;
            padding: 18px 0;
            color: var(--text-2);
            font-weight: 500;
            font-size: 15px;
            transition: color var(--transition);
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        .nav-links a.active {
            color: var(--primary);
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 3px;
            height: 2px;
            border-radius: 99px;
            background: var(--primary);
        }

        .nav-cta {
            margin-left: auto;
        }

        .nav-cta .btn {
            height: 40px;
            padding: 0 18px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            margin-left: auto;
            border-radius: 12px;
            background: var(--primary-soft);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            transition: background var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--primary-dark);
            border-radius: 99px;
            transition: transform var(--transition), opacity var(--transition);
        }

        .site-header.nav-open .nav-toggle span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .site-header.nav-open .nav-toggle span:nth-child(2) {
            opacity: 0;
        }

        .site-header.nav-open .nav-toggle span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero */
        .page-hero {
            position: relative;
            background: var(--primary-soft);
            padding: 54px 0 0;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.14;
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(15, 110, 96, 0.18) 1px, transparent 1px);
            background-size: 22px 22px;
            opacity: 0.5;
            pointer-events: none;
        }

        .hero-layout {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.08fr 0.92fr;
            gap: 60px;
            align-items: center;
            padding: 20px 0 70px;
        }

        .hero-copy {
            max-width: 640px;
        }

        .hero-title {
            margin: 18px 0 14px;
            font-size: clamp(38px, 3.2vw, 54px);
            line-height: 1.18;
            letter-spacing: -0.02em;
            color: var(--primary-dark);
        }

        .hero-desc {
            color: var(--text-2);
            font-size: 17px;
            line-height: 1.8;
            max-width: 580px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }

        .hero-note {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 22px;
            color: var(--text-2);
            font-size: 14px;
        }

        .hero-note .line-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 4px rgba(15, 110, 96, 0.16);
        }

        .hero-visual {
            position: relative;
        }

        .browser-stage {
            background: var(--primary-dark);
            border-radius: 24px;
            padding: 12px 12px 34px;
            box-shadow: var(--shadow-float);
            transform: rotate(1.2deg);
            transition: transform 0.4s ease-out;
        }

        .browser-stage:hover {
            transform: rotate(0deg);
        }

        .browser-bar {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 4px 8px 12px;
        }

        .browser-bar i {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.3);
        }

        .browser-bar span {
            font-family: var(--font-mono);
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            margin-left: 6px;
        }

        .browser-screen {
            border-radius: 14px;
            overflow: hidden;
            background: #ffffff;
            aspect-ratio: 4 / 3;
        }

        .browser-screen img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hero-visual-note {
            position: absolute;
            left: -18px;
            bottom: -14px;
            background: var(--accent-soft);
            border: 1px solid rgba(240, 180, 41, 0.45);
            color: #614A0E;
            font-size: 13px;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 99px;
            box-shadow: var(--shadow-card);
        }

        /* Anchor bar */
        .anchor-bar {
            position: sticky;
            top: 68px;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid var(--divider);
            backdrop-filter: blur(10px);
        }

        .anchor-links {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 4px 0;
        }

        .anchor-links::-webkit-scrollbar {
            display: none;
        }

        .anchor-links a {
            display: inline-flex;
            align-items: center;
            min-height: 44px;
            padding: 0 16px;
            white-space: nowrap;
            color: var(--text-2);
            font-size: 14px;
            font-weight: 600;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
        }

        .anchor-links a:hover {
            color: var(--primary);
            border-bottom-color: rgba(15, 110, 96, 0.35);
        }

        /* Module gallery */
        .spec-header-row {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 30px;
            margin-bottom: 46px;
        }

        .spec-header-row .section-head {
            margin-bottom: 0;
        }

        .spec-count {
            font-family: var(--font-mono);
            font-size: 14px;
            color: var(--text-3);
            background: var(--primary-soft);
            border-radius: 12px;
            padding: 10px 14px;
            white-space: nowrap;
        }

        .spec-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 26px;
        }

        .spec-card {
            background: #ffffff;
            border: 1px solid var(--divider);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            display: flex;
            flex-direction: column;
        }

        .spec-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 110, 96, 0.26);
        }

        .spec-media {
            aspect-ratio: 16 / 11;
            overflow: hidden;
            background: var(--primary-soft);
            position: relative;
        }

        .spec-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease-out;
        }

        .spec-card:hover .spec-media img {
            transform: scale(1.03);
        }

        .spec-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 61, 53, 0) 65%, rgba(11, 61, 53, 0.2) 100%);
        }

        .spec-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 22px 22px 24px;
        }

        .spec-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            margin-bottom: 8px;
        }

        .spec-no {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-soft);
            border-radius: 99px;
            padding: 3px 10px;
        }

        .spec-title {
            flex: 1;
            font-size: 19px;
            line-height: 1.4;
            color: var(--text);
        }

        .spec-body p {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.75;
            margin-top: 6px;
        }

        .spec-foot {
            margin-top: auto;
            padding-top: 16px;
        }

        .ref-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition), color var(--transition);
        }

        .ref-link:hover {
            gap: 9px;
            color: var(--primary-press);
        }

        .ref-link i {
            font-style: normal;
            font-size: 18px;
        }

        /* Principles */
        .principles-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 70px;
            align-items: start;
        }

        .principle-intro {
            position: sticky;
            top: 150px;
        }

        .principle-intro .sec-title {
            margin-top: 16px;
        }

        .principle-intro .sec-desc {
            font-size: 16px;
        }

        .principle-list {
            border-top: 1px solid var(--divider);
        }

        .principle {
            display: grid;
            grid-template-columns: 52px 1fr;
            gap: 14px;
            padding: 24px 0 24px 4px;
            border-bottom: 1px solid var(--divider);
        }

        .principle-no {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-soft);
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
        }

        .principle h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
        }

        .principle p {
            color: var(--text-2);
            font-size: 15px;
            margin-top: 6px;
            max-width: 620px;
        }

        /* Workflow */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
        }

        .step-card {
            background: var(--primary-soft);
            border: 1px solid rgba(15, 110, 96, 0.1);
            border-radius: 20px;
            padding: 26px 22px;
            transition: transform var(--transition), box-shadow var(--transition);
        }

        .step-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }

        .step-num {
            font-family: var(--font-mono);
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            background: #ffffff;
            border-radius: 8px;
            padding: 4px 10px;
        }

        .step-card h3 {
            margin-top: 18px;
            font-size: 18px;
            line-height: 1.45;
        }

        .step-card p {
            margin-top: 8px;
            color: var(--text-2);
            font-size: 14.5px;
            line-height: 1.75;
        }

        /* Scenarios */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .scenario-card {
            background: #ffffff;
            border: 1px solid var(--divider);
            border-left: 4px solid var(--primary);
            border-radius: 16px;
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .scenario-card .s-type {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--primary);
        }

        .scenario-card h3 {
            margin-top: 14px;
            font-size: 17px;
            line-height: 1.5;
        }

        .scenario-card p {
            margin-top: 8px;
            color: var(--text-2);
            font-size: 14.5px;
            line-height: 1.7;
        }

        /* Checklist */
        .checklist-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .check-list {
            background: var(--body-bg);
            border: 1px solid var(--divider);
            border-radius: 20px;
            padding: 10px 24px;
        }

        .check-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 15px 0;
            border-bottom: 1px dashed var(--divider);
        }

        .check-item:last-child {
            border-bottom: none;
        }

        .check-mark {
            flex: 0 0 22px;
            width: 22px;
            height: 22px;
            margin-top: 5px;
            border-radius: 8px;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            line-height: 1;
        }

        .check-item p {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.6;
        }

        .check-media {
            position: relative;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            aspect-ratio: 4 / 3;
        }

        .check-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .check-media figcaption {
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 16px;
            background: rgba(11, 61, 53, 0.82);
            color: #ffffff;
            backdrop-filter: blur(6px);
            border-radius: 14px;
            padding: 10px 14px;
            font-size: 14px;
        }

        /* Related category */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 26px;
        }

        .related-card {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            background: #ffffff;
            border: 1px solid var(--divider);
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(15, 110, 96, 0.24);
        }

        .related-media {
            position: relative;
            min-height: 230px;
            overflow: hidden;
        }

        .related-media img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .related-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 61, 53, 0.06);
        }

        .related-body {
            padding: 28px 26px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .related-body h3 {
            font-size: 21px;
            line-height: 1.4;
        }

        .related-body p {
            color: var(--text-2);
            font-size: 15px;
            margin-top: 10px;
        }

        .related-body .ref-link {
            margin-top: 16px;
        }

        /* CTA */
        .cta-section {
            padding: 30px 0 90px;
        }

        .cta-banner {
            position: relative;
            background: var(--primary-dark);
            border-radius: 32px;
            padding: 56px 58px;
            display: grid;
            grid-template-columns: 1.5fr auto;
            gap: 46px;
            align-items: center;
            overflow: hidden;
            isolation: isolate;
        }

        .cta-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.14;
        }

        .cta-banner::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.12);
            z-index: -1;
        }

        .cta-title {
            color: #ffffff;
            font-size: clamp(25px, 2.2vw, 34px);
            line-height: 1.35;
        }

        .cta-sub {
            color: rgba(255, 255, 255, 0.78);
            margin-top: 12px;
            font-size: 15px;
            max-width: 680px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: flex-end;
        }

        /* FAQ */
        .faq-wrap {
            max-width: 940px;
            margin: 48px auto 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--divider);
            border-radius: 18px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition), border-color var(--transition);
        }

        .faq-item.open {
            border-color: rgba(15, 110, 96, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .faq-btn {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            width: 100%;
            min-height: 64px;
            padding: 18px 24px;
            text-align: left;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            transition: color var(--transition);
        }

        .faq-btn:hover {
            color: var(--primary);
        }

        .faq-icon {
            position: relative;
            flex: 0 0 18px;
            width: 18px;
            height: 18px;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            border-radius: 2px;
            background: var(--primary);
            transition: transform var(--transition), opacity var(--transition);
        }

        .faq-icon::before {
            left: 0;
            top: 8px;
            width: 18px;
            height: 2px;
        }

        .faq-icon::after {
            left: 8px;
            top: 0;
            width: 2px;
            height: 18px;
        }

        .faq-item.open .faq-icon::after {
            transform: scaleY(0);
            opacity: 0;
        }

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            color: var(--text-2);
            font-size: 15.5px;
            line-height: 1.85;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 70px 0 0;
        }

        .site-footer .brand {
            color: #ffffff;
        }

        .site-footer .brand-mark {
            background: rgba(255, 255, 255, 0.14);
            box-shadow: none;
        }

        .site-footer .brand-name small {
            color: #B9CEC7;
        }

        .site-footer .container:first-child {
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.45fr 0.9fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 46px;
        }

        .footer-desc {
            max-width: 360px;
            margin-top: 18px;
            color: #B9CEC7;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-list a {
            display: inline-block;
            color: #B9CEC7;
            font-size: 14px;
            padding: 5px 0;
            transition: color var(--transition), text-decoration-color var(--transition);
            text-decoration: underline transparent;
            text-underline-offset: 4px;
        }

        .footer-list a:hover {
            color: #ffffff;
            text-decoration-color: rgba(255, 255, 255, 0.5);
            text-decoration: underline;
        }

        .footer-contact p {
            color: #B9CEC7;
            font-size: 14px;
            line-height: 1.8;
            margin-top: 10px;
        }

        .footer-contact a {
            color: #ffffff;
            font-weight: 600;
            font-family: var(--font-mono);
            transition: color var(--transition);
        }

        .footer-contact a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            flex-wrap: wrap;
            padding: 20px 0;
            color: #96B2AA;
            font-size: 13px;
        }

        /* Responsive */
        @media (max-width: 1180px) {
            .spec-grid {
                grid-template-columns: repeat(3, minmax(0, 1fr));
                gap: 20px;
            }

            .nav-links {
                gap: 16px;
                margin-left: 12px;
            }
        }

        @media (max-width: 1024px) {
            .nav-links {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }

            .site-header.nav-open .nav-links,
            .site-header.nav-open .nav-cta {
                display: flex;
                flex: 0 0 100%;
                margin-left: 0;
            }

            .site-header.nav-open .nav-links {
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0 6px;
                gap: 0;
                border-top: 1px solid var(--divider);
            }

            .site-header.nav-open .nav-links a {
                padding: 13px 2px;
                border-bottom: 1px solid rgba(223, 232, 229, 0.7);
            }

            .site-header.nav-open .nav-links a.active::after {
                display: none;
            }

            .site-header.nav-open .nav-links a.active {
                background: var(--primary-soft);
                color: var(--primary);
                border-radius: 10px;
                padding-left: 12px;
                padding-right: 12px;
            }

            .site-header.nav-open .nav-links a:hover {
                background: rgba(231, 242, 239, 0.6);
                border-radius: 10px;
                padding-left: 12px;
                padding-right: 12px;
            }

            .site-header.nav-open .nav-cta {
                padding: 8px 0 12px;
            }

            .hero-layout {
                grid-template-columns: 1fr 0.95fr;
                gap: 40px;
                padding-bottom: 48px;
            }

            .principles-grid {
                grid-template-columns: 1fr;
                gap: 48px;
            }

            .principle-intro {
                position: static;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .checklist-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 36px;
            }

            .cta-banner {
                grid-template-columns: 1fr;
                gap: 26px;
            }

            .cta-actions {
                justify-content: flex-start;
            }
        }

        @media (max-width: 900px) {
            .hero-layout {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .hero-copy {
                max-width: 720px;
                margin: 0 auto;
            }

            .hero-desc {
                margin-left: auto;
                margin-right: auto;
            }

            .hero-actions,
            .hero-note {
                justify-content: center;
            }

            .hero-visual {
                max-width: 560px;
                margin: 0 auto;
                width: 100%;
            }

            .hero-visual-note {
                left: 10px;
            }

            .spec-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .anchor-bar {
                top: 0;
            }

            html {
                scroll-padding-top: 100px;
            }
        }

        @media (max-width: 640px) {
            .sec {
                padding: 64px 0;
            }

            .spec-header-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }

            .spec-grid {
                grid-template-columns: 1fr;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .cta-banner {
                padding: 38px 26px;
                border-radius: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 34px;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .related-card {
                grid-template-columns: 1fr;
            }

            .related-media {
                position: relative;
                min-height: 190px;
            }

            .related-media img {
                position: absolute;
                inset: 0;
            }

            .page-hero {
                padding-top: 36px;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-desc {
                font-size: 16px;
            }
        }