/* roulang page: index */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-deep: #064E3B;
            --accent: #B45309;
            --bg-warm: #F7F5F0;
            --card-bg: #FFFFFF;
            --ink: #1C1917;
            --muted: #78716C;
            --line: #E7E5E4;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-md: 0 1px 3px rgba(0, 0, 0, .06), 0 12px 32px rgba(0, 0, 0, .08);
            --shadow-lg: 0 4px 12px rgba(0, 0, 0, .08), 0 20px 44px rgba(0, 0, 0, .12);
            --transition: all .3s cubic-bezier(.25, .8, .25, 1);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-warm);
            color: var(--ink);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select {
            font-family: inherit;
            font-size: 100%;
            line-height: 1.5;
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            width: 100%;
        }
        .section-pad {
            padding: 80px 0;
        }
        .section-title-wrap {
            max-width: 640px;
            margin-bottom: 48px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--ink);
            line-height: 1.3;
        }
        .section-sub {
            color: var(--muted);
            font-size: 15px;
            margin-top: 12px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 2px 6px rgba(15, 118, 110, 0.24);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #0b5f59;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(15, 118, 110, 0.3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, .35);
            outline-offset: 2px;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 4px rgba(15, 118, 110, .2);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            border: 1.5px solid rgba(255, 255, 255, .65);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .btn-outline-light:focus-visible {
            outline: 3px solid rgba(255, 255, 255, .3);
            outline-offset: 2px;
        }
        .btn-outline-light:active {
            transform: translateY(0);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            border: 1px solid transparent;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 2px 6px rgba(180, 83, 9, 0.24);
            white-space: nowrap;
        }
        .btn-accent:hover {
            background: #92400e;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(180, 83, 9, .3);
        }
        .btn-accent:focus-visible {
            outline: 3px solid rgba(180, 83, 9, .4);
            outline-offset: 2px;
        }
        .btn-accent:active {
            transform: translateY(0);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            line-height: 1.6;
        }
        .badge-amber {
            background: rgba(180, 83, 9, .1);
            color: var(--accent);
        }
        .badge-light {
            background: rgba(255, 255, 255, .14);
            color: #fff;
        }
        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            transition: var(--transition);
            border-bottom: 1px solid transparent;
        }
        .site-header.scrolled {
            background: var(--bg-warm);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 2px 12px rgba(0, 0, 0, .04);
        }
        .site-header.scrolled .nav-brand,
        .site-header.scrolled .nav-link,
        .site-header.scrolled .menu-toggle {
            color: var(--ink);
        }
        .site-header.scrolled .nav-link.active {
            color: var(--primary);
        }
        .site-header .container-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .nav-brand {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -0.01em;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: color .3s;
            white-space: nowrap;
        }
        .nav-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-link {
            color: rgba(255, 255, 255, .88);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, .1);
            color: #fff;
        }
        .site-header.scrolled .nav-link:hover {
            background: rgba(15, 118, 110, .06);
            color: var(--primary);
        }
        .nav-link.active {
            color: var(--accent);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: -2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .site-header .nav-cta {
            margin-left: 10px;
            padding: 10px 20px;
            font-size: 14px;
            background: #fff;
            color: var(--primary-deep);
        }
        .site-header.scrolled .nav-cta {
            background: var(--primary);
            color: #fff;
        }
        .site-header .nav-cta:hover {
            background: #f0fdfa;
            transform: translateY(-1px);
        }
        .site-header.scrolled .nav-cta:hover {
            background: #0b5f59;
            color: #fff;
        }
        .menu-toggle {
            display: none;
            color: #fff;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background .2s;
        }
        .menu-toggle:hover {
            background: rgba(255, 255, 255, .12);
        }
        .site-header.scrolled .menu-toggle:hover {
            background: rgba(15, 118, 110, .08);
        }
        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, #0F766E 0%, #134E4A 60%, #0d3d3a 100%);
            color: #fff;
            padding: 160px 0 0px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                radial-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            right: -140px;
            top: -140px;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .045);
            pointer-events: none;
        }
        .hero-bg-img {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .16;
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 56px;
            align-items: center;
            padding-bottom: 72px;
        }
        .hero-title {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: #fff;
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            color: #fcd34d;
        }
        .hero-sub {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .75);
            max-width: 420px;
            margin-bottom: 32px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-card {
            background: #fff;
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
            padding: 32px 30px;
            color: var(--ink);
        }
        .hero-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .hero-card-sub {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 20px;
        }
        .form-label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .form-label span {
            color: #dc2626;
        }
        .form-input {
            width: 100%;
            padding: 11px 14px;
            border: 1px solid var(--line);
            border-radius: 10px;
            font-size: 14px;
            background: #fafaf9;
            transition: var(--transition);
            color: var(--ink);
            margin-bottom: 14px;
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 118, 110, .12);
            background: #fff;
        }
        .form-select {
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2378716C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            background-size: 16px;
        }
        .form-submit {
            width: 100%;
            margin-top: 2px;
        }
        .form-note {
            font-size: 12px;
            color: var(--muted);
            margin-top: 12px;
            text-align: center;
        }
        /* Stats band */
        .stats-band {
            background: var(--bg-warm);
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-item {
            display: flex;
            align-items: center;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 14px 22px;
            box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
        }
        .stat-num {
            font-size: 22px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            white-space: nowrap;
        }
        .stat-label {
            font-size: 13px;
            color: var(--muted);
            font-weight: 500;
            line-height: 1.4;
        }
        /* Steps */
        .steps-section {
            background: #fff;
        }
        .steps-track {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            position: relative;
        }
        .step-item {
            position: relative;
            padding: 40px 28px 32px;
            background: var(--bg-warm);
            border: 1px solid var(--line);
            border-radius: 16px;
            transition: var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-num {
            width: 46px;
            height: 46px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }
        .step-connector {
            position: absolute;
            top: 62px;
            left: calc(50% + 30px);
            width: calc(100% - 20px);
            height: 2px;
            background: var(--line);
            z-index: 1;
        }
        .step-item:last-child .step-connector {
            display: none;
        }
        .step-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--ink);
        }
        .step-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
        }
        /* Case section */
        .case-section {
            background: var(--bg-warm);
        }
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .case-text-block .section-title {
            margin-bottom: 18px;
        }
        .case-intro {
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 24px;
            font-size: 15px;
        }
        .case-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }
        .case-timeline {
            position: relative;
            padding-left: 28px;
            border-left: 2px solid var(--line);
        }
        .case-tl-item {
            position: relative;
            padding: 0 0 28px 24px;
        }
        .case-tl-item:last-child {
            padding-bottom: 0;
        }
        .case-tl-item::before {
            content: '';
            position: absolute;
            left: -6px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
        }
        .case-tl-item:nth-child(2)::before {
            background: var(--accent);
            box-shadow: 0 0 0 2px var(--accent);
        }
        .case-tl-item:nth-child(3)::before {
            background: var(--primary-dark);
            box-shadow: 0 0 0 2px var(--primary-dark);
        }
        .case-tl-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 6px;
        }
        .case-tl-desc {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .case-tl-result {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(180, 83, 9, .08);
            padding: 3px 12px;
            border-radius: 999px;
        }
        /* FAQ */
        .faq-section {
            background: #fff;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 860px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.open {
            border-color: rgba(15, 118, 110, .3);
            box-shadow: var(--shadow-md);
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink);
            transition: background .2s;
        }
        .faq-q:hover {
            background: rgba(247, 245, 240, .5);
        }
        .faq-q-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-arrow {
            margin-left: auto;
            color: var(--muted);
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
        }
        .faq-a-inner {
            padding: 0 24px 20px 62px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            border-left: 3px solid var(--primary);
            margin-left: 24px;
            background: rgba(247, 245, 240, .4);
            padding-left: 20px;
            margin-right: 24px;
            border-radius: 0 8px 8px 0;
        }
        /* CTA */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, #064E3B, #0F766E);
            color: #fff;
            padding: 72px 0;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image:
                radial-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px);
            background-size: 20px 20px;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
            text-align: center;
        }
        .cta-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, .75);
            line-height: 1.8;
            margin-bottom: 32px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        /* News */
        .news-section {
            background: var(--bg-warm);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 28px 26px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(15, 118, 110, .2);
        }
        .news-cat {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(15, 118, 110, .1);
            padding: 3px 12px;
            border-radius: 999px;
            width: fit-content;
        }
        .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink);
            line-height: 1.5;
            margin-bottom: 4px;
        }
        .news-excerpt {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 14px;
            border-top: 1px solid #f0efed;
        }
        .news-time {
            font-size: 13px;
            color: var(--muted);
        }
        .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: color .2s;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-link:hover {
            color: var(--accent);
        }
        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--line);
            border-radius: 16px;
            padding: 48px;
            text-align: center;
            color: var(--muted);
            font-size: 15px;
            background: #fff;
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .footer-brand .brand-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            transition: color .2s;
        }
        .footer-links a:hover {
            color: #fcd34d;
        }
        .footer-contact {
            font-size: 14px;
            line-height: 2;
            color: rgba(255, 255, 255, .65);
        }
        .footer-contact span {
            color: rgba(255, 255, 255, .45);
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
                padding-bottom: 48px;
            }
            .hero-title {
                font-size: 36px;
            }
            .hero-sub {
                max-width: 100%;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-track {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .step-connector {
                display: none;
            }
            .case-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .section-pad {
                padding: 56px 0;
            }
            .case-grid {
                gap: 40px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }
        @media (max-width: 768px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .menu-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-warm);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                box-shadow: 0 20px 40px rgba(0, 0, 0, .1);
                border-bottom: 1px solid var(--line);
                transform: translateY(-120%);
                opacity: 0;
                visibility: hidden;
                transition: all .3s ease;
                pointer-events: none;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
                pointer-events: auto;
            }
            .nav-link {
                color: var(--ink);
                padding: 14px 16px;
                font-size: 15px;
            }
            .nav-link:hover {
                background: rgba(15, 118, 110, .06);
                color: var(--primary);
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-link.active {
                background: rgba(15, 118, 110, .08);
                color: var(--primary);
            }
            .site-header .nav-cta {
                margin-left: 0;
                margin-top: 8px;
                text-align: center;
                background: var(--primary);
                color: #fff;
                width: 100%;
            }
            .site-header .nav-cta:hover {
                background: #0b5f59;
            }
            .hero {
                padding-top: 130px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline-light {
                text-align: center;
                width: 100%;
            }
            .stats-grid {
                gap: 10px;
            }
            .stat-item {
                border-radius: 14px;
                padding: 16px 18px;
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .stat-num {
                font-size: 20px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-pad {
                padding: 48px 0;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-title {
                font-size: 26px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-actions .btn-primary {
                width: 100%;
                text-align: center;
            }
            .faq-q {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-a-inner {
                margin-left: 16px;
                margin-right: 16px;
                padding-left: 14px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-card {
                padding: 24px 20px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-item {
                padding: 14px 16px;
            }
            .stat-num {
                font-size: 18px;
            }
            .news-card {
                padding: 22px 18px;
            }
            .form-input {
                font-size: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0F766E;
            --primary-dark: #064E3B;
            --accent: #B45309;
            --bg-warm: #F7F5F0;
            --card-white: #FFFFFF;
            --text-dark: #1C1917;
            --text-muted: #78716C;
            --border-light: #E7E5E4;
            --gradient-brand: linear-gradient(135deg, #0F766E, #134E4A);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-soft: 0 1px 3px rgba(0,0,0,.06), 0 12px 32px rgba(0,0,0,.08);
            --shadow-hover: 0 4px 12px rgba(0,0,0,.10), 0 16px 40px rgba(0,0,0,.12);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-warm);
            color: var(--text-dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            transition: background .3s ease, box-shadow .3s ease, padding .3s ease;
            padding: 18px 0;
            background: transparent;
        }
        .site-header.is-scrolled {
            background: var(--bg-warm);
            box-shadow: 0 1px 0 rgba(0,0,0,.06), 0 4px 20px rgba(0,0,0,.04);
            padding: 12px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .site-logo {
            font-size: 22px;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: color .3s ease;
            white-space: nowrap;
        }
        .site-header.is-scrolled .site-logo {
            color: var(--text-dark);
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
            flex-shrink: 0;
            box-shadow: 0 0 0 3px rgba(180,83,9,.2);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: rgba(255,255,255,.85);
            padding: 8px 14px;
            border-radius: 8px;
            transition: background .2s ease, color .2s ease;
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            background: rgba(255,255,255,.12);
            color: #fff;
        }
        .nav-link.active {
            color: #fff;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 14px;
            right: 14px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        .site-header.is-scrolled .nav-link {
            color: var(--text-dark);
        }
        .site-header.is-scrolled .nav-link:hover {
            background: rgba(15,118,110,.06);
            color: var(--primary);
        }
        .site-header.is-scrolled .nav-link.active {
            color: var(--primary);
        }
        .site-header.is-scrolled .nav-link.active::after {
            background: var(--accent);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 10px;
            transition: all .25s ease;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #0d5f59;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(15,118,110,.25);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(15,118,110,.4);
            outline-offset: 2px;
        }
        .nav-cta {
            margin-left: 10px;
        }
        .site-header.is-scrolled .nav-cta {
            background: var(--primary);
            color: #fff;
        }
        .site-header.is-scrolled .nav-cta:hover {
            background: #0d5f59;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            border-radius: 8px;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all .3s ease;
        }
        .site-header.is-scrolled .nav-toggle span {
            background: var(--text-dark);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(15,118,110,.92), rgba(19,74,74,.97)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 150px 0 80px;
            color: #fff;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }
        .cat-hero-content {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            font-size: 13px;
            color: rgba(255,255,255,.7);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: rgba(255,255,255,.7);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb .sep {
            color: rgba(255,255,255,.4);
        }
        .breadcrumb .current {
            color: rgba(255,255,255,.95);
            font-weight: 500;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 18px;
        }
        .cat-hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255,255,255,.85);
            max-width: 720px;
            margin-bottom: 30px;
        }

        /* Guide highlights */
        .highlights-section {
            background: var(--bg-warm);
            padding: 56px 0 20px;
        }
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .highlight-item {
            background: var(--card-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            box-shadow: var(--shadow-soft);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .highlight-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .highlight-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(15,118,110,.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
        }
        .highlight-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text-dark);
        }
        .highlight-item p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* Split content sections */
        .content-section {
            padding: 72px 0;
            background: var(--bg-warm);
        }
        .section-alt {
            background: var(--card-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .split-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
            background: #eee;
        }
        .split-media img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .split-media:hover img {
            transform: scale(1.03);
        }
        .split-content {
            padding: 10px 0;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(15,118,110,.08);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: .02em;
        }
        .split-content h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-dark);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .split-content p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 14px;
        }
        .text-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            margin-top: 10px;
            transition: gap .2s ease, color .2s ease;
        }
        .text-link:hover {
            color: #0d5f59;
            gap: 10px;
        }
        .text-link svg {
            width: 16px;
            height: 16px;
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-warm);
        }
        .faq-section .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .faq-section .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-dark);
            margin-bottom: 10px;
        }
        .faq-section .section-head p {
            font-size: 15px;
            color: var(--text-muted);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--card-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 0;
            transition: box-shadow .3s ease, border-color .3s ease;
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: rgba(15,118,110,.3);
            box-shadow: 0 2px 8px rgba(0,0,0,.04);
        }
        .faq-item.open {
            border-color: rgba(15,118,110,.4);
            box-shadow: var(--shadow-soft);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            background: transparent;
            transition: background .2s ease;
        }
        .faq-question:hover {
            background: rgba(15,118,110,.02);
        }
        .faq-q-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(15,118,110,.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .faq-question .faq-text {
            flex: 1;
        }
        .faq-arrow {
            width: 18px;
            height: 18px;
            color: var(--text-muted);
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
            background: #FAFAF7;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 22px 64px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }
        .faq-answer-border {
            border-left: 3px solid var(--primary);
            padding-left: 16px;
        }

        /* CTA */
        .cta-section {
            background: var(--gradient-brand);
            padding: 72px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(rgba(255,255,255,.06) 1px, transparent 1px);
            background-size: 20px 20px;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
            max-width: 720px;
        }
        .cta-inner h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-inner p {
            font-size: 16px;
            color: rgba(255,255,255,.8);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-inner .btn-primary {
            background: var(--accent);
            font-size: 16px;
            padding: 14px 36px;
            border-radius: 12px;
            border: 2px solid transparent;
            box-shadow: 0 4px 16px rgba(0,0,0,.2);
        }
        .cta-inner .btn-primary:hover {
            background: #96420a;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,0,0,.3);
        }
        .cta-inner .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            padding: 12px 28px;
            border-radius: 12px;
            border: 2px solid rgba(255,255,255,.5);
            margin-left: 12px;
            transition: all .25s ease;
        }
        .cta-inner .btn-outline:hover {
            border-color: #fff;
            background: rgba(255,255,255,.1);
            transform: translateY(-2px);
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        /* Footer */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255,255,255,.85);
            padding: 64px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255,255,255,.6);
            line-height: 1.7;
            max-width: 340px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: .02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255,255,255,.6);
            transition: color .2s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact div {
            font-size: 14px;
            color: rgba(255,255,255,.6);
        }
        .footer-contact span {
            color: rgba(255,255,255,.85);
            font-weight: 600;
            margin-right: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,.1);
            padding-top: 28px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255,255,255,.4);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .container-main {
                padding: 0 16px;
            }
            .cat-hero {
                padding: 130px 0 60px;
            }
            .cat-hero h1 {
                font-size: 34px;
            }
            .highlights-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .split-media img {
                height: 260px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-warm);
                flex-direction: column;
                align-items: stretch;
                padding: 16px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0,0,0,.12);
                transform: translateY(-20px);
                opacity: 0;
                pointer-events: none;
                transition: all .3s ease;
                border-radius: 0 0 16px 16px;
                max-height: calc(100vh - 80px);
                overflow-y: auto;
            }
            .nav-menu.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-menu .nav-link {
                color: var(--text-dark);
                padding: 12px 14px;
                border-radius: 10px;
            }
            .nav-menu .nav-link:hover {
                background: rgba(15,118,110,.06);
            }
            .nav-menu .nav-link.active {
                color: var(--primary);
                background: rgba(15,118,110,.06);
            }
            .nav-menu .nav-link.active::after {
                display: none;
            }
            .nav-cta {
                margin: 8px 0 0;
                text-align: center;
            }
            .site-logo {
                font-size: 19px;
            }
            .cat-hero {
                padding: 120px 0 48px;
            }
            .cat-hero h1 {
                font-size: 28px;
                line-height: 1.25;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .highlights-grid {
                grid-template-columns: 1fr;
            }
            .content-section {
                padding: 48px 0;
            }
            .split-content h2 {
                font-size: 24px;
            }
            .faq-section {
                padding: 48px 0;
            }
            .faq-section .section-head h2 {
                font-size: 26px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 18px 54px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .cta-inner h2 {
                font-size: 26px;
            }
            .cta-actions {
                flex-direction: column;
                width: 100%;
            }
            .cta-actions .btn-primary,
            .cta-actions .btn-outline {
                width: 100%;
                justify-content: center;
                margin-left: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .cat-hero h1 {
                font-size: 24px;
            }
            .cat-hero-desc {
                font-size: 14px;
            }
            .split-media img {
                height: 200px;
            }
            .brand-dot {
                width: 8px;
                height: 8px;
            }
            .site-footer {
                padding: 48px 0 24px;
            }
        }

/* roulang page: article */
:root {
  --color-primary: #0F766E;
  --color-primary-dark: #134E4A;
  --color-deep: #064E3B;
  --color-accent: #B45309;
  --color-bg: #F7F5F0;
  --color-card: #FFFFFF;
  --color-text: #1C1917;
  --color-text-sub: #57534E;
  --color-muted: #78716C;
  --color-border: #E7E5E4;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 3px rgba(0,0,0,.06), 0 12px 32px rgba(0,0,0,.08);
  --shadow-hover: 0 4px 12px rgba(0,0,0,.10), 0 20px 44px rgba(0,0,0,.13);
  --transition: .25s ease;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }
input, textarea { font-family: inherit; }

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

/* ===== 顶部导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background .3s, box-shadow .3s, border-color .3s;
  background: transparent;
  border-bottom: 1px solid transparent;
}

.site-header.scrolled {
  background: rgba(247, 245, 240, .97);
  border-bottom-color: rgba(231, 229, 228, .9);
  box-shadow: 0 4px 20px rgba(0,0,0,.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color .3s;
}

.brand-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
  box-shadow: 0 0 0 4px rgba(180, 83, 9, .2);
}

.site-header.scrolled .brand { color: var(--color-text); }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link {
  font-size: 14.5px;
  font-weight: 500;
  color: rgba(255,255,255,.92);
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  position: relative;
  transition: background .25s, color .25s;
  white-space: nowrap;
}

.nav-link:hover { background: rgba(255,255,255,.14); color: #fff; }

.nav-link.active { color: #fff; font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px; right: 16px; bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-accent);
}

.site-header.scrolled .nav-link { color: var(--color-text); }
.site-header.scrolled .nav-link:hover { background: rgba(15,118,110,.08); color: var(--color-primary); }
.site-header.scrolled .nav-link.active { color: var(--color-primary); }
.site-header.scrolled .nav-link.active::after { background: var(--color-accent); }

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all .25s ease;
  box-shadow: 0 2px 8px rgba(15,118,110,.25);
  text-align: center;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(15,118,110,.32);
  color: #fff;
}

.btn-primary:active { transform: translateY(0); box-shadow: 0 1px 4px rgba(15,118,110,.25); }
.btn-primary:focus-visible { outline: 3px solid rgba(15,118,110,.35); outline-offset: 2px; }

.nav-cta { padding: 9px 20px; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: none;
  background: rgba(255,255,255,.12);
  border-radius: var(--radius-sm);
  color: #fff;
  font-size: 20px;
  align-items: center;
  justify-content: center;
  transition: background .25s;
}

.site-header.scrolled .nav-toggle { background: rgba(15,118,110,.08); color: var(--color-text); }
.nav-toggle:hover { background: rgba(255,255,255,.2); }

/* ===== 页面 Banner ===== */
.page-hero {
  position: relative;
  padding: 160px 0 120px;
  background-color: var(--color-primary-dark);
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  color: #fff;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,118,110,.94) 0%, rgba(19,78,74,.97) 100%);
}

.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.page-hero .container-main { position: relative; z-index: 2; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  color: rgba(255,255,255,.75);
  margin-bottom: 20px;
}

.breadcrumb a { color: rgba(255,255,255,.85); transition: color .25s; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb .sep { color: rgba(255,255,255,.45); }
.breadcrumb .current { color: rgba(255,255,255,.95); font-weight: 500; }

.page-hero-title {
  max-width: 820px;
  margin: 0 0 18px;
  font-size: 38px;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.02em;
  word-break: break-word;
}

@supports (font-size: clamp(1.5rem, 4vw, 2.75rem)) {
  .page-hero-title { font-size: clamp(1.6rem, 4vw, 2.75rem); }
}

.page-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 13.5px;
  color: rgba(255,255,255,.8);
}

.page-hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.page-hero-meta i { font-size: 14px; color: rgba(255,255,255,.65); }

/* ===== 文章主体 ===== */
.article-main-wrap {
  position: relative;
  z-index: 5;
  margin-top: -60px;
  padding-bottom: 60px;
}

.article-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 48px 56px;
  max-width: 880px;
  margin: 0 auto;
}

.article-header-detail {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 24px;
  margin-bottom: 32px;
}

.article-header-detail h1 {
  font-size: 28px;
  line-height: 1.4;
  font-weight: 700;
  margin: 0 0 14px;
  letter-spacing: -0.01em;
}

.article-header-detail .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--color-muted);
  font-size: 13px;
}

.article-header-detail .meta span { display: inline-flex; align-items: center; gap: 6px; }

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  max-width: 72ch;
}

.article-content p { margin: 0 0 1.5em; }
.article-content strong { font-weight: 600; color: var(--color-text); }
.article-content em { font-style: italic; }

.article-content h2 {
  font-size: 22px;
  font-weight: 700;
  margin: 2em 0 .8em;
  color: var(--color-text);
  padding-left: 14px;
  border-left: 3px solid var(--color-primary);
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 1.8em 0 .6em;
  color: var(--color-text);
}

.article-content a { color: var(--color-primary); text-decoration: underline; word-break: break-word; }
.article-content a:hover { color: var(--color-primary-dark); }

.article-content blockquote {
  margin: 1.5em 0;
  padding: 18px 22px;
  background: var(--color-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 12px 12px 0;
  color: var(--color-text-sub);
}

.article-content ul {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}

.article-content ol {
  margin: 0 0 1.5em;
  padding-left: 1.4em;
}

.article-content li { margin-bottom: .45em; }
.article-content li::marker { color: var(--color-primary); font-weight: 600; }

.article-content img {
  border-radius: var(--radius-md);
  margin: 1.5em 0;
  box-shadow: 0 4px 16px rgba(0,0,0,.08);
}

.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 15px;
  border-radius: var(--radius-md);
  overflow: hidden;
}

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

.article-content table th {
  background: var(--color-bg);
  font-weight: 600;
}

.article-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2em 0;
}

.article-source {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-muted);
  background: var(--color-bg);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  margin-top: 8px;
}

.not-found-box {
  text-align: center;
  padding: 64px 24px;
}

.not-found-box .icon-empty {
  font-size: 48px;
  color: #D6D3D1;
  margin-bottom: 20px;
}

.not-found-box h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 0 0 12px;
}

.not-found-box p {
  color: var(--color-muted);
  max-width: 360px;
  margin: 0 auto 8px;
  font-size: 15px;
}

.not-found-box .btn-primary { margin-top: 24px; }

/* ===== 相关阅读 ===== */
.related-section {
  padding: 72px 0 20px;
}

.related-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 32px;
  justify-content: center;
  text-align: center;
}

.related-head h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.related-head .head-line {
  flex: 1;
  max-width: 80px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border));
}

.related-head .head-line:last-child {
  background: linear-gradient(90deg, var(--color-border), transparent);
}

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

.related-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .3s, box-shadow .3s;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(231,229,228,.45);
}

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

.related-card .thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
}

.related-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

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

.related-card .thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.14));
}

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

.related-card .card-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(15,118,110,.09);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
}

.related-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px;
  line-height: 1.45;
  transition: color .25s;
}

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

.related-card p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.65;
  margin: 0 0 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card .card-link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s, color .25s;
}

.related-card .card-link:hover { gap: 10px; color: var(--color-primary-dark); }

/* ===== CTA 区 ===== */
.cta-section {
  margin-top: 72px;
  position: relative;
  background: linear-gradient(135deg, #0F766E 0%, #064E3B 100%);
  padding: 72px 24px 68px;
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.09) 1px, transparent 1px);
  background-size: 22px 22px;
  pointer-events: none;
}

.cta-section .container-main { position: relative; z-index: 2; }

.cta-title {
  font-size: 30px;
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.02em;
}

.cta-subtitle {
  font-size: 15px;
  color: rgba(255,255,255,.85);
  max-width: 620px;
  margin: 0 auto 28px;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all .25s ease;
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
}

.btn-white:hover {
  background: #F0FDFA;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.2);
  color: var(--color-primary-dark);
}

.btn-outline-white {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.55);
  transition: all .25s ease;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,.12);
  border-color: #fff;
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--color-deep);
  color: rgba(255,255,255,.82);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 44px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.footer-brand .brand-dot { box-shadow: 0 0 0 4px rgba(180,83,9,.25); }

.footer-desc {
  font-size: 14px;
  color: rgba(255,255,255,.65);
  line-height: 1.7;
  max-width: 320px;
  margin: 0;
}

.footer-title {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 16px;
}

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

.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,.7);
  transition: color .25s;
}

.footer-links a:hover { color: #D97706; }

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.7);
}

.footer-contact span {
  color: rgba(255,255,255,.45);
  font-size: 12.5px;
  display: block;
  margin-bottom: 1px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .container-main { padding-left: 16px; padding-right: 16px; }

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

  .article-card { padding: 36px 40px; }
}

@media (max-width: 767px) {
  .header-inner { height: 64px; }

  .nav-toggle {
    display: inline-flex;
    margin-left: 10px;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 30px rgba(0,0,0,.1);
    transform: translateY(-120%);
    opacity: 0;
    transition: transform .3s ease, opacity .25s;
    z-index: 99;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-link {
    color: var(--color-text);
    padding: 12px 16px;
    border-radius: 10px;
  }

  .nav-link:hover { background: rgba(15,118,110,.07); color: var(--color-primary); }
  .nav-link.active { color: var(--color-primary); background: rgba(15,118,110,.06); }
  .nav-link.active::after { display: none; }
  .nav-cta { margin-top: 8px; justify-content: center; }

  .page-hero { padding: 130px 0 100px; }
  .page-hero-title { font-size: 24px; line-height: 1.35; }
  .page-hero-meta { gap: 10px; font-size: 12.5px; }

  .article-main-wrap { margin-top: -32px; }
  .article-card { padding: 28px 20px; }
  .article-header-detail h1 { font-size: 22px; }
  .article-content { font-size: 15.5px; }

  .related-section { padding: 48px 0 8px; }
  .related-head h2 { font-size: 22px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }

  .cta-section { padding: 52px 16px 50px; }
  .cta-title { font-size: 24px; }
  .cta-actions .btn-white,
  .cta-actions .btn-outline-white { width: 100%; justify-content: center; }

  .footer-grid { grid-template-columns: 1fr; gap: 36px; padding-bottom: 32px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 520px) {
  .related-grid { grid-template-columns: 1fr; }
  .article-card { padding: 22px 16px; }
  .related-head { gap: 10px; }
  .related-head .head-line { max-width: 32px; }
}

/* roulang page: category3 */
:root {
            --primary: #0F766E;
            --primary-dark: #064E3B;
            --primary-deeper: #134E4A;
            --accent: #B45309;
            --bg: #F7F5F0;
            --surface: #FFFFFF;
            --text: #1C1917;
            --text-secondary: #78716C;
            --border: #E7E5E4;
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-soft: 0 1px 3px rgba(0, 0, 0, .06), 0 12px 32px rgba(0, 0, 0, .08);
            --shadow-hover: 0 4px 12px rgba(0, 0, 0, .08), 0 20px 40px rgba(0, 0, 0, .12);
            --transition: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: transparent;
            border-bottom: 1px solid transparent;
            transition: background .4s ease, box-shadow .4s ease, border-color .4s ease;
            padding: 16px 0;
        }
        .site-header.scrolled {
            background: rgba(247, 245, 240, .96);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 3px rgba(0, 0, 0, .04);
            padding: 12px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: -.01em;
            color: #fff;
            white-space: nowrap;
            line-height: 1.2;
        }
        .site-header.scrolled .logo-link {
            color: var(--text);
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
            box-shadow: 0 0 0 4px rgba(180, 83, 9, .15);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            color: rgba(255, 255, 255, .92);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 14px;
            border-radius: 10px;
            position: relative;
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, .12);
            color: #fff;
        }
        .site-header.scrolled .nav-link {
            color: var(--text);
        }
        .site-header.scrolled .nav-link:hover {
            background: rgba(15, 118, 110, .08);
            color: var(--primary);
        }
        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        .site-header.scrolled .nav-link.active {
            color: var(--primary);
        }
        .site-header.scrolled .nav-link.active::after {
            background: var(--accent);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent);
            color: #fff !important;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 12px;
            transition: var(--transition);
            box-shadow: 0 1px 3px rgba(180, 83, 9, .25), 0 6px 18px rgba(180, 83, 9, .18);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: #92400e;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(180, 83, 9, .35), 0 12px 28px rgba(180, 83, 9, .22);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(180, 83, 9, .2);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, .4);
            outline-offset: 2px;
        }
        .nav-cta {
            margin-left: 8px;
            padding: 9px 20px;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 10px;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            border-radius: 2px;
            background: #fff;
            transition: var(--transition);
        }
        .site-header.scrolled .nav-toggle span {
            background: var(--text);
        }
        /* ===== Category Hero ===== */
        .cat-hero {
            padding: 160px 0 72px;
            background: linear-gradient(135deg, rgba(15, 118, 110, .96), rgba(19, 78, 74, .98)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: radial-gradient(rgba(255, 255, 255, .08) 1px, transparent 1px);
            background-size: 24px 24px;
            pointer-events: none;
        }
        .cat-hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .75);
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 20px;
            backdrop-filter: none;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .cat-hero h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.25;
            margin-bottom: 18px;
            color: #fff;
        }
        .cat-hero .lead {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
            max-width: 640px;
        }
        .cat-hero .lead strong {
            color: #FBBF24;
            font-weight: 600;
        }
        /* ===== Section ===== */
        .section {
            padding: 88px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(15, 118, 110, .08);
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: .02em;
            margin-bottom: 16px;
        }
        .section-label i {
            font-size: 12px;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 560px;
        }
        /* ===== Split Block ===== */
        .split-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }
        .split-block.reverse .split-image {
            order: 2;
        }
        .split-block.reverse .split-content {
            order: 1;
        }
        .split-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            position: relative;
            background: #e5e7eb;
        }
        .split-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .split-image:hover img {
            transform: scale(1.03);
        }
        .split-content {
            padding: 8px 0;
        }
        .split-content h2 {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.3;
            margin: 12px 0 16px;
            color: var(--text);
        }
        .split-content>p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .feature-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 28px;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: var(--transition);
        }
        .feature-list li:hover {
            border-color: rgba(15, 118, 110, .3);
            box-shadow: 0 2px 8px rgba(15, 118, 110, .06);
        }
        .feature-list li i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .feature-list li strong {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }
        .feature-list li span {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        /* ===== Steps ===== */
        .step-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
            margin-bottom: 28px;
        }
        .step-list li {
            display: flex;
            gap: 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 16px 18px;
            transition: var(--transition);
            box-shadow: 0 1px 3px rgba(0, 0, 0, .02);
        }
        .step-list li:hover {
            box-shadow: var(--shadow-soft);
            border-color: rgba(15, 118, 110, .25);
            transform: translateY(-2px);
        }
        .step-num {
            font-size: 16px;
            font-weight: 800;
            color: var(--accent);
            background: rgba(180, 83, 9, .08);
            border-radius: 10px;
            min-width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .step-list li strong {
            display: block;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 2px;
        }
        .step-list li span {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* ===== Inline Link ===== */
        .inline-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(15, 118, 110, .06);
            border: 1px solid rgba(15, 118, 110, .18);
            padding: 10px 20px;
            border-radius: 12px;
            transition: var(--transition);
        }
        .inline-link:hover {
            background: rgba(15, 118, 110, .12);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(15, 118, 110, .12);
            color: var(--primary-dark);
        }
        .inline-link i {
            font-size: 13px;
        }
        /* ===== CTA Section ===== */
        .cta-section {
            padding: 80px 0;
            background: var(--primary-dark);
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            top: -40px;
            right: -20px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .04);
        }
        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -60px;
            left: 30%;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .03);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -.02em;
            margin-bottom: 12px;
            color: #fff;
        }
        .cta-inner p {
            font-size: 15px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .cta-buttons .btn-primary {
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
        }
        .cta-buttons .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 12px;
            transition: var(--transition);
            background: transparent;
        }
        .cta-buttons .btn-outline:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(255, 255, 255, .6);
            transform: translateY(-2px);
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, .8);
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            line-height: 1.7;
            max-width: 300px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .7);
            font-size: 14px;
            transition: var(--transition);
            width: fit-content;
        }
        .footer-links a:hover {
            color: #FBBF24;
            padding-left: 4px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-contact div {
            display: flex;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
        }
        .footer-contact span {
            color: rgba(255, 255, 255, .45);
            min-width: 60px;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            .container-main {
                padding-left: 16px;
                padding-right: 16px;
            }
            .split-block {
                gap: 36px;
            }
            .cat-hero {
                padding: 130px 0 56px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-menu {
                position: fixed;
                top: 0;
                right: 0;
                width: 280px;
                height: 100vh;
                background: var(--bg);
                flex-direction: column;
                align-items: flex-start;
                padding: 80px 24px 24px;
                gap: 6px;
                box-shadow: -8px 0 24px rgba(0, 0, 0, .1);
                transform: translateX(100%);
                transition: transform .4s ease;
                border-radius: 0;
            }
            .nav-menu.open {
                transform: translateX(0);
            }
            .nav-link {
                color: var(--text) !important;
                width: 100%;
                padding: 12px 14px;
                font-size: 15px;
                border-radius: 10px;
            }
            .nav-link.active {
                background: rgba(15, 118, 110, .08);
                color: var(--primary) !important;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .cat-hero .lead {
                font-size: 15px;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .split-block {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .split-block.reverse .split-image {
                order: 1;
            }
            .split-block.reverse .split-content {
                order: 2;
            }
            .split-image img {
                height: 230px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-inner h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .cat-hero {
                padding: 110px 0 44px;
            }
            .cat-hero h1 {
                font-size: 25px;
            }
            .cat-hero .lead {
                font-size: 14px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .split-image img {
                height: 190px;
            }
            .feature-list li,
            .step-list li {
                padding: 12px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: center;
                gap: 10px;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0F766E;
            --primary-dark: #134E4A;
            --primary-deeper: #064E3B;
            --accent: #B45309;
            --bg-warm: #F7F5F0;
            --card: #FFFFFF;
            --text-main: #1C1917;
            --text-muted: #78716C;
            --border: #E7E5E4;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --shadow-soft: 0 1px 3px rgba(0, 0, 0, .06), 0 12px 32px rgba(0, 0, 0, .08);
            --shadow-hover: 0 4px 8px rgba(0, 0, 0, .08), 0 20px 40px rgba(0, 0, 0, .12);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 15px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button {
            font-family: inherit;
        }

        .container-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 767px) {
            .container-main {
                padding: 0 16px;
            }
        }

        /* 按钮体系 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            border: 2px solid transparent;
            transition: all .25s ease;
            cursor: pointer;
            line-height: 1.4;
            box-shadow: 0 2px 6px rgba(15, 118, 110, .2);
        }
        .btn-primary:hover {
            background: #0D6A63;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 118, 110, .3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(15, 118, 110, .2);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(15, 118, 110, .35);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255, 255, 255, .7);
            transition: all .25s ease;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .12);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, .15);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 16px;
            border-radius: var(--radius-md);
        }

        /* 顶部导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            display: flex;
            align-items: center;
            transition: all .3s ease;
            background: transparent;
        }
        .site-header.scrolled {
            background: rgba(247, 245, 240, .96);
            box-shadow: 0 1px 0 var(--border), 0 8px 30px rgba(0, 0, 0, .05);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -.02em;
            color: #fff;
            transition: color .3s ease;
            white-space: nowrap;
        }
        .site-header.scrolled .brand-logo {
            color: var(--text-main);
        }
        .brand-dot {
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            display: inline-block;
            margin-right: 10px;
            flex-shrink: 0;
            box-shadow: 0 0 0 3px rgba(180, 83, 9, .2);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: rgba(255, 255, 255, .85);
            padding: 6px 2px;
            transition: color .25s ease;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 0;
            height: 3px;
            background: var(--accent);
            border-radius: 999px;
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: #fff;
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: #fff;
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .site-header.scrolled .nav-link {
            color: var(--text-main);
        }
        .site-header.scrolled .nav-link:hover,
        .site-header.scrolled .nav-link.active {
            color: var(--primary);
        }
        .nav-cta {
            margin-left: 4px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: #fff;
            transition: color .3s ease;
            z-index: 101;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            margin: 5px 0;
            background: currentColor;
            border-radius: 2px;
            transition: all .3s ease;
        }
        .site-header.scrolled .nav-toggle {
            color: var(--text-main);
        }

        /* 分类 Hero */
        .category-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 55%, var(--primary-deeper) 100%);
            color: #fff;
            padding: 140px 0 72px;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .12;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 255, 255, .08) 0%, transparent 70%);
            border-radius: 50%;
        }
        .category-hero .container-main {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, .75);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, .9);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 10px;
            opacity: .6;
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.25;
            margin-bottom: 18px;
        }
        .hero-intro {
            max-width: 720px;
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .88);
        }

        /* 图文分区 */
        .split-section {
            padding: 76px 0;
        }
        .split-panel {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
            overflow: hidden;
            transition: box-shadow .3s ease, transform .3s ease;
        }
        .split-panel:hover {
            box-shadow: var(--shadow-hover);
        }
        .split-image {
            overflow: hidden;
            min-height: 300px;
            height: 100%;
        }
        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .split-panel:hover .split-image img {
            transform: scale(1.03);
        }
        .split-content {
            padding: 36px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .split-tag {
            display: inline-flex;
            align-items: center;
            width: fit-content;
            background: rgba(15, 118, 110, .08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 18px;
            letter-spacing: .02em;
        }
        .split-content h2 {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -.02em;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--text-main);
        }
        .split-content>p.lead {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-list {
            list-style: none;
        }
        .feature-item {
            display: flex;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border);
        }
        .feature-item:last-child {
            border-bottom: none;
        }
        .feature-icon {
            flex-shrink: 0;
            width: 38px;
            height: 38px;
            border-radius: var(--radius-md);
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }
        .feature-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .feature-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .step-list {
            list-style: none;
            margin-top: 4px;
        }
        .step-item {
            display: flex;
            gap: 18px;
            padding: 16px 0;
            border-bottom: 1px dashed var(--border);
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(15, 118, 110, .25);
        }
        .step-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-main);
        }
        .step-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .split-link {
            margin-top: 24px;
            text-align: center;
        }
        .split-link a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            background: rgba(15, 118, 110, .06);
            transition: all .25s ease;
        }
        .split-link a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(4px);
        }
        .split-link a i {
            font-size: 12px;
        }

        /* CTA 区块 */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-deeper) 75%);
            padding: 80px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -120px;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 255, 255, .06) 0%, transparent 70%);
        }
        .cta-section .container-main {
            position: relative;
            z-index: 1;
        }
        .cta-kicker {
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, .8);
            letter-spacing: .08em;
            margin-bottom: 14px;
        }
        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -.02em;
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .cta-sub {
            font-size: 16px;
            color: rgba(255, 255, 255, .85);
            max-width: 520px;
            margin: 0 auto 32px;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* 页脚 */
        .site-footer {
            background: var(--primary-deeper);
            color: rgba(255, 255, 255, .85);
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 40px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .65);
            max-width: 360px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
        }
        .footer-contact div {
            display: flex;
            gap: 8px;
            color: rgba(255, 255, 255, .7);
        }
        .footer-contact span {
            color: rgba(255, 255, 255, .45);
            min-width: 62px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }

        /* 响应式 */
        @media (max-width: 1023px) {
            .category-hero h1 {
                font-size: 34px;
            }
            .split-content {
                padding: 28px;
            }
        }
        @media (max-width: 767px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: fixed;
                top: 0;
                right: 0;
                height: 100vh;
                width: min(320px, 85vw);
                background: var(--primary-deeper);
                flex-direction: column;
                align-items: flex-start;
                justify-content: flex-start;
                padding: 96px 28px 40px;
                transform: translateX(100%);
                transition: transform .35s ease;
                box-shadow: -24px 0 60px rgba(0, 0, 0, .25);
                gap: 8px;
                overflow-y: auto;
            }
            .nav-menu.open {
                transform: translateX(0);
            }
            .nav-menu .nav-link {
                color: #fff !important;
                font-size: 17px;
                padding: 10px 0;
                width: 100%;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
            }
            .nav-menu .nav-link::after {
                display: none;
            }
            .nav-menu .nav-cta {
                margin-top: 24px;
                width: 100%;
                justify-content: center;
            }
            body.menu-open {
                overflow: hidden;
            }
            .category-hero {
                padding: 120px 0 56px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .hero-intro {
                font-size: 15px;
            }
            .split-section {
                padding: 48px 0;
            }
            .split-content {
                padding: 24px;
            }
            .split-content h2 {
                font-size: 22px;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-buttons .btn-primary,
            .cta-buttons .btn-outline {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .category-hero h1 {
                font-size: 24px;
            }
            .split-image {
                min-height: 220px;
            }
        }