/* roulang page: index */
:root {
            --primary: #1F7A5C;
            --primary-dark: #185E46;
            --dark: #122B23;
            --dark-2: #0E201A;
            --accent: #E2A33B;
            --bg: #F5F6F3;
            --card: #FFFFFF;
            --text: #24332C;
            --muted: #5E6E65;
            --border: #E3EAE5;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow: 0 10px 34px rgba(18, 43, 35, 0.09);
            --shadow-hover: 0 18px 44px rgba(18, 43, 35, 0.15);
            --transition: all 0.25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            padding: 0;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        :focus-visible {
            outline: 3px solid rgba(31, 122, 92, 0.45);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .grid-container {
            max-width: 1200px;
        }

        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 200;
            padding: 0 16px;
        }
        .nav-shell {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: rgba(255, 255, 255, 0.84);
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: 80px;
            box-shadow: 0 8px 30px rgba(18, 43, 35, 0.1);
            padding: 11px 20px 11px 22px;
            transition: var(--transition);
        }
        .site-header.scrolled .nav-shell {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 14px 40px rgba(18, 43, 35, 0.13);
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            font-weight: 800;
            font-size: 1.08rem;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .brand-mark {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 16px rgba(31, 122, 92, 0.3);
        }
        .brand-sub {
            display: block;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--muted);
            letter-spacing: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 60px;
            font-weight: 600;
            font-size: 0.93rem;
            color: var(--text);
            transition: var(--transition);
        }
        .nav-link:hover {
            background: rgba(31, 122, 92, 0.1);
            color: var(--primary);
        }
        .nav-link.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-link.active:hover {
            background: var(--primary-dark);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: none;
            border-radius: 50%;
            background: transparent;
            cursor: pointer;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
        }
        @media (max-width: 800px) {
            .nav-toggle {
                display: inline-flex;
            }
            .nav-menu {
                position: absolute;
                top: 66px;
                left: 12px;
                right: 12px;
                background: rgba(255, 255, 255, 0.97);
                -webkit-backdrop-filter: blur(18px);
                backdrop-filter: blur(18px);
                border: 1px solid rgba(255, 255, 255, 0.8);
                box-shadow: 0 20px 50px rgba(18, 43, 35, 0.16);
                border-radius: 24px;
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                opacity: 0;
                transform: translateY(-10px);
                pointer-events: none;
                transition: var(--transition);
            }
            .nav-menu.is-open {
                opacity: 1;
                transform: translateY(0);
                pointer-events: auto;
            }
            .nav-link {
                justify-content: center;
                padding: 13px 16px;
            }
        }

        .hero {
            position: relative;
            background:
                linear-gradient(104deg, rgba(18, 43, 35, 0.94) 0%, rgba(18, 43, 35, 0.82) 55%, rgba(31, 122, 92, 0.6) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            color: #fff;
            padding: 156px 0 88px;
            overflow: hidden;
        }
        .hero::after {
            content: "";
            position: absolute;
            right: -120px;
            top: -80px;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: rgba(226, 163, 59, 0.13);
            filter: blur(90px);
            pointer-events: none;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 60px;
            padding: 7px 16px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.86);
            margin-bottom: 22px;
            backdrop-filter: blur(8px);
        }
        .hero-title {
            font-size: clamp(2.25rem, 5vw, 4rem);
            line-height: 1.15;
            font-weight: 800;
            margin: 0 0 20px;
            letter-spacing: -0.02em;
        }
        .hero-title span {
            color: var(--accent);
        }
        .hero-lead {
            font-size: 1.12rem;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.9;
            max-width: 590px;
            margin-bottom: 30px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 60px;
            font-size: 0.96rem;
            font-weight: 700;
            line-height: 1;
            border: 2px solid transparent;
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--accent);
            color: var(--dark);
        }
        .btn-primary:hover {
            background: #d7942f;
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(226, 163, 59, 0.3);
        }
        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 18px;
            font-size: 0.87rem;
            color: rgba(255, 255, 255, 0.75);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-art {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 30px 70px rgba(7, 22, 17, 0.4);
            border: 1px solid rgba(255, 255, 255, 0.22);
        }
        .hero-art img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .trust-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 600;
            font-size: 0.92rem;
            padding: 10px 4px;
            color: var(--text);
        }
        .trust-item i {
            color: var(--primary);
            font-size: 1.25rem;
        }

        .section {
            padding: 96px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(1.75rem, 2.5vw, 2.5rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin: 0 0 16px;
            color: var(--text);
        }
        .section-intro {
            font-size: 1rem;
            color: var(--muted);
            max-width: 720px;
            margin-bottom: 44px;
            line-height: 1.9;
        }

        .spot-layout {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 26px;
            align-items: stretch;
        }
        .spot-main {
            border-radius: var(--radius-lg);
            min-height: 480px;
            background: linear-gradient(160deg, rgba(18, 43, 35, 0.85), rgba(18, 43, 35, 0.4)), url('/assets/images/coverpic/cover-2.webp') center center / cover no-repeat;
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            color: #fff;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
        }
        .spot-main .spot-tag,
        .spot-side-card .spot-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.28);
            padding: 4px 12px;
            border-radius: 40px;
            font-size: 0.8rem;
            margin-bottom: 14px;
            width: fit-content;
            color: #fff;
        }
        .spot-main h3 {
            font-size: 1.7rem;
            font-weight: 800;
            margin: 0 0 10px;
            color: #fff;
        }
        .spot-main p {
            color: rgba(255, 255, 255, 0.82);
            max-width: 480px;
            margin-bottom: 20px;
        }
        .spot-link,
        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: #fff;
            font-size: 0.92rem;
        }
        .spot-main .spot-link i,
        .spot-side-card .spot-link i,
        .card-link i {
            transition: transform 0.22s ease;
        }
        .spot-main .spot-link:hover i,
        .spot-side-card .spot-link:hover i,
        .card-link:hover i {
            transform: translateX(4px);
        }
        .spot-side {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 26px;
        }
        .spot-side-card {
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            background: var(--card);
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .spot-side-card .top-row {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 16px;
        }
        .spot-side-card h4 {
            font-size: 1.28rem;
            font-weight: 800;
            margin: 0 0 10px;
            color: var(--text);
        }
        .spot-side-card h4 i {
            color: var(--primary);
            margin-right: 8px;
        }
        .spot-side-card p {
            font-size: 0.94rem;
            color: var(--muted);
            margin-bottom: 14px;
            line-height: 1.8;
        }
        .spot-side-card .card-link {
            color: var(--primary);
        }

        @media (max-width: 900px) {
            .spot-layout {
                grid-template-columns: 1fr;
            }
            .spot-side {
                grid-template-rows: none;
                grid-template-columns: 1fr;
            }
            .spot-main {
                min-height: 360px;
            }
            .section {
                padding: 72px 0;
            }
        }

        .scenario-wrap {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 40px;
            align-items: center;
        }
        .scenario-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            height: 100%;
            min-height: 360px;
            object-fit: cover;
            width: 100%;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .scenario-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            box-shadow: 0 6px 22px rgba(18, 43, 35, 0.05);
            transition: var(--transition);
        }
        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(31, 122, 92, 0.35);
        }
        .scenario-card.wide {
            grid-column: span 2;
        }
        .scenario-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(31, 122, 92, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 14px;
        }
        .scenario-card h4 {
            font-size: 1rem;
            font-weight: 800;
            margin: 0 0 6px;
        }
        .scenario-card p {
            font-size: 0.9rem;
            color: var(--muted);
            margin: 0;
        }
        @media (max-width: 860px) {
            .scenario-wrap {
                grid-template-columns: 1fr;
            }
            .scenario-img {
                min-height: 250px;
            }
        }
        @media (max-width: 560px) {
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .scenario-card.wide {
                grid-column: span 1;
            }
            .section {
                padding: 56px 0;
            }
        }

        .picks-section {
            background:
                linear-gradient(120deg, rgba(255, 255, 255, 0.94) 0%, rgba(245, 246, 243, 0.97) 100%),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        }
        .picks-wrap {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 32px;
            align-items: stretch;
        }
        .picks-quote {
            background: var(--dark);
            border-radius: var(--radius-lg);
            padding: 42px;
            color: #fff;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 340px;
            box-shadow: 0 20px 60px rgba(18, 43, 35, 0.22);
        }
        .picks-quote::before {
            content: "\201C";
            font-size: 4.5rem;
            color: var(--accent);
            line-height: 0.5;
            margin-bottom: 18px;
            font-weight: 800;
        }
        .picks-quote p {
            font-size: 1.13rem;
            color: rgba(255, 255, 255, 0.86);
            line-height: 1.9;
            margin-bottom: 20px;
        }
        .picks-quote span {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
        }
        .picks-lists {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .picks-node {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            flex: 1;
            box-shadow: 0 6px 22px rgba(18, 43, 35, 0.06);
        }
        .picks-node i {
            color: var(--primary);
            font-size: 1.45rem;
            padding-top: 3px;
        }
        .picks-node h5 {
            font-size: 1.02rem;
            font-weight: 800;
            margin: 0 0 4px;
        }
        .picks-node p {
            font-size: 0.9rem;
            color: var(--muted);
            margin: 0;
        }
        @media (max-width: 860px) {
            .picks-wrap {
                grid-template-columns: 1fr;
            }
            .picks-quote {
                min-height: auto;
            }
        }

        .access-section {
            background: var(--dark-2);
            position: relative;
        }
        .access-section .section-title,
        .access-section .section-intro {
            color: #fff;
        }
        .access-section .section-intro {
            color: rgba(255, 255, 255, 0.72);
        }
        .access-grid {
            display: grid;
            grid-template-columns: 1fr 1.08fr 1fr;
            gap: 20px;
            align-items: stretch;
        }
        .access-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius-lg);
            padding: 32px;
            backdrop-filter: blur(10px);
            color: #fff;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .access-card.featured {
            background: #fff;
            color: var(--text);
            box-shadow: 0 28px 70px rgba(0, 0, 0, 0.25);
            transform: translateY(-10px);
            border: none;
            padding: 38px 34px;
        }
        .access-card.featured:hover {
            transform: translateY(-14px);
        }
        .access-tag {
            display: inline-block;
            background: rgba(31, 122, 92, 0.16);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 30px;
            width: fit-content;
            margin-bottom: 14px;
        }
        .access-card.featured .access-tag {
            background: var(--primary);
            color: #fff;
        }
        .access-card h4 {
            font-size: 1.2rem;
            font-weight: 800;
            margin: 0 0 12px;
        }
        .access-card p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 20px;
            flex: 1;
        }
        .access-card.featured p {
            color: var(--muted);
        }
        .access-list {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
        }
        .access-list li {
            display: flex;
            gap: 10px;
            align-items: center;
            font-size: 0.9rem;
            padding: 5px 0;
        }
        .access-list li i {
            color: var(--primary);
            font-size: 0.8rem;
            width: 18px;
        }
        .access-card.featured .access-list li i {
            color: var(--primary);
        }
        .access-card .access-btn {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            border-radius: 50px;
            padding: 11px 18px;
            font-weight: 700;
            font-size: 0.9rem;
            border: 1px solid rgba(255, 255, 255, 0.26);
            color: #fff;
            transition: var(--transition);
            gap: 8px;
        }
        .access-card .access-btn:hover {
            background: rgba(255, 255, 255, 0.12);
        }
        .access-card.featured .access-btn {
            background: var(--primary);
            color: #fff;
            border-color: transparent;
        }
        .access-card.featured .access-btn:hover {
            background: var(--primary-dark);
        }
        @media (max-width: 880px) {
            .access-grid {
                grid-template-columns: 1fr;
            }
            .access-card.featured {
                transform: none;
            }
            .access-card.featured:hover {
                transform: translateY(-5px);
            }
        }

        .news-section {
            background: var(--bg);
        }
        .news-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 26px;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(31, 122, 92, 0.34);
        }
        .news-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 12px;
            margin-bottom: 10px;
        }
        .news-cat {
            background: rgba(31, 122, 92, 0.12);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 30px;
        }
        .news-date {
            font-size: 0.82rem;
            color: var(--muted);
        }
        .news-card h3 {
            font-size: 1.18rem;
            font-weight: 800;
            line-height: 1.5;
            margin: 0 0 10px;
        }
        .news-card h3 a {
            color: var(--text);
        }
        .news-card h3 a:hover {
            color: var(--primary);
        }
        .news-excerpt {
            font-size: 0.93rem;
            color: var(--muted);
            margin-bottom: 16px;
            flex: 1;
            line-height: 1.8;
        }
        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.9rem;
        }
        .news-empty {
            background: #fff;
            border: 1px dashed #c2cfc6;
            border-radius: var(--radius-md);
            text-align: center;
            padding: 44px 24px;
            color: var(--muted);
            grid-column: 1 / -1;
        }
        @media (max-width: 720px) {
            .news-list {
                grid-template-columns: 1fr;
            }
        }

        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            padding: 0;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item.active {
            box-shadow: 0 8px 30px rgba(18, 43, 35, 0.08);
            border-color: rgba(31, 122, 92, 0.4);
        }
        .faq-q {
            width: 100%;
            background: none;
            border: none;
            padding: 21px 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            cursor: pointer;
            font: inherit;
            color: var(--text);
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
        }
        .faq-q i {
            color: var(--primary);
            font-size: 1rem;
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }
        .faq-a {
            display: none;
            padding: 0 26px 22px;
            color: var(--muted);
            font-size: 0.95rem;
            line-height: 1.9;
        }
        .faq-item.active .faq-a {
            display: block;
        }

        .cta-banner {
            background:
                linear-gradient(100deg, rgba(18, 43, 35, 0.9) 10%, rgba(18, 43, 35, 0.72)),
                url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            padding: 84px 0;
            color: #fff;
            text-align: center;
        }
        .cta-banner h2 {
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            font-weight: 800;
            margin: 0 auto 16px;
            max-width: 760px;
            line-height: 1.3;
        }
        .cta-banner p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1.06rem;
            max-width: 660px;
            margin: 0 auto 32px;
        }
        .cta-banner .btn-primary {
            background: var(--accent);
        }
        .cta-banner .btn-ghost {
            border-color: rgba(255, 255, 255, 0.6);
        }

        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.72);
            padding: 76px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.9fr 0.9fr;
            gap: 40px;
            padding-bottom: 38px;
        }
        .footer-brand .logo-line {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.06rem;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo-line i {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--primary);
            border-radius: 50%;
            color: #fff;
            font-size: 0.9rem;
        }
        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.9;
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 800;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-links li {
            padding: 5px 0;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.66);
            font-size: 0.92rem;
        }
        .footer-links a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 0.92rem;
            padding: 6px 0;
        }
        .footer-contact li i {
            color: var(--accent);
            margin-top: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 22px 0;
            font-size: 0.84rem;
            color: rgba(255, 255, 255, 0.52);
            text-align: center;
        }
        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .site-footer {
                padding-top: 54px;
            }
            .hero {
                padding: 128px 0 60px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .section-title {
                font-size: 1.55rem;
            }
        }

/* roulang page: category1 */
:root {
  --green: #1F7A5C;
  --green-dark: #155943;
  --deep: #122B23;
  --deep-2: #1B3A30;
  --gold: #E2A33B;
  --bg: #F5F6F3;
  --card: #FFFFFF;
  --text: #24332C;
  --muted: #5E6E65;
  --border: #DCE5DE;
  --shadow-sm: 0 6px 18px rgba(18, 43, 35, .06);
  --shadow: 0 16px 44px rgba(18, 43, 35, .09);
  --shadow-lg: 0 24px 60px rgba(18, 43, 35, .14);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --transition: .25s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img,
svg,
video {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

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

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
ul,
ol,
figure {
  margin: 0;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
  position: relative;
}

.grid-container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

.section {
  padding: 104px 0;
}

.section-deep {
  background: var(--deep);
  color: #F7FBF7;
}

section {
  scroll-margin-top: 100px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 52px;
}

.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--green);
  background: rgba(31, 122, 92, .08);
  border: 1px solid rgba(31, 122, 92, .12);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(1.75rem, 2.5vw, 2.5rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--deep);
}

.section-head p {
  color: var(--muted);
  margin-top: 18px;
  font-size: 16px;
}

.eyebrow i {
  color: var(--gold);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: .02em;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
  white-space: nowrap;
}

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

.btn-primary i {
  transition: transform .25s ease;
}

.btn-primary:hover {
  background: var(--green-dark);
  box-shadow: 0 12px 30px rgba(31, 122, 92, .25);
  transform: translateY(-2px);
}

.btn-primary:hover i {
  transform: translateX(4px);
}

.btn-light {
  background: #FFFFFF;
  color: var(--deep);
}

.btn-light:hover {
  background: #F0F4EF;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .12);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, .55);
  color: #FFFFFF;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(226, 163, 59, .75);
  outline-offset: 3px;
  border-radius: 8px;
}

.site-header {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 0 12px;
  pointer-events: none;
}

.nav-shell {
  position: relative;
  pointer-events: auto;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: rgba(255, 255, 255, .86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, .7);
  box-shadow: 0 16px 42px rgba(18, 43, 35, .12);
  padding: 10px 12px 10px 20px;
  border-radius: 999px;
  transition: box-shadow .3s ease, border-color .3s ease;
}

.site-header.scrolled .nav-shell {
  border-color: rgba(31, 122, 92, .12);
  box-shadow: 0 18px 38px rgba(18, 43, 35, .16);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--deep);
  line-height: 1;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  background: linear-gradient(135deg, #1F7A5C, #122B23);
  color: #FFFFFF;
  border-radius: 16px;
  font-size: 19px;
  box-shadow: 0 10px 22px rgba(31, 122, 92, .22);
}

.brand > span:last-child {
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .02em;
  display: flex;
  flex-direction: column;
}

.brand-sub {
  font-size: 10px;
  font-weight: 700;
  color: #6D8278;
  letter-spacing: .16em;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 650;
  font-size: 15px;
  color: #2A3A33;
  transition: background .25s, color .25s, transform .25s;
}

.nav-link:hover {
  background: rgba(31, 122, 92, .08);
  color: var(--green);
}

.nav-link.active {
  background: var(--green);
  color: #FFFFFF;
  box-shadow: 0 8px 22px rgba(31, 122, 92, .24);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(31, 122, 92, .14);
  background: #FFFFFF;
  border-radius: 999px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--green);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.hero-section {
  position: relative;
  background:
    linear-gradient(106deg, rgba(18, 43, 35, .97) 0%, rgba(18, 43, 35, .89) 38%, rgba(25, 61, 49, .68) 75%, rgba(18, 43, 35, .42) 100%),
    url("/assets/images/backpic/back-1.png") center 60% / cover;
  color: #FFFFFF;
  padding: 178px 0 88px;
  overflow: hidden;
}

.hero-section::before {
  content: "";
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(226, 163, 59, .25), transparent 65%);
  top: 18%;
  right: -160px;
  pointer-events: none;
}

.hero-section::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to top, var(--bg), transparent);
  pointer-events: none;
  z-index: 1;
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.4fr .9fr;
  gap: 80px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 8px 16px 8px 10px;
  color: rgba(255, 255, 255, .92);
  font-size: 13px;
  font-weight: 600;
}

.hero-badge i {
  color: var(--gold);
}

.hero-section h1 {
  font-size: clamp(2.4rem, 5vw, 4.1rem);
  line-height: 1.14;
  letter-spacing: -.04em;
  font-weight: 800;
  margin: 22px 0 22px;
}

.hero-section h1 .mark {
  color: var(--gold);
  position: relative;
  white-space: nowrap;
}

.hero-copy-lead {
  font-size: 17px;
  color: rgba(255, 255, 255, .84);
  max-width: 640px;
  margin-bottom: 34px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  color: rgba(255, 255, 255, .78);
  font-size: 14px;
}

.hero-proof li {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-proof i {
  color: var(--gold);
  font-size: 16px;
}

.hero-card {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(14px);
  border-radius: var(--radius-xl);
  padding: 26px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, .18);
}

.hero-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #FFFFFF;
  margin-bottom: 18px;
}

.hero-card-head .date-line {
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
}

.hero-card-list {
  display: grid;
  gap: 14px;
}

.hero-mini-item {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 16px;
  padding: 16px 16px;
  transition: background .25s;
}

.hero-mini-item strong {
  display: block;
  font-size: 15px;
  margin-bottom: 5px;
}

.hero-mini-item p {
  font-size: 13px;
  color: rgba(255, 255, 255, .7);
  line-height: 1.5;
}

.hero-mini-item:hover {
  background: rgba(255, 255, 255, .17);
}

.topic-section {
  padding-top: 84px;
  padding-bottom: 30px;
}

.topic-strip {
  display: grid;
  grid-template-columns: 1.05fr .8fr 1.1fr;
  gap: 24px;
  margin-top: 44px;
}

.topic-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 26px 26px;
  overflow: hidden;
  min-height: 210px;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}

.topic-card::before {
  content: "";
  position: absolute;
  width: 52px;
  height: 52px;
  border-radius: 18px;
  background: rgba(31, 122, 92, .08);
  right: -18px;
  top: -18px;
  transform: rotate(24deg);
}

.topic-card:nth-child(2) {
  transform: translateY(20px);
}

.topic-card:nth-child(3) {
  transform: translateY(-10px);
}

.topic-card:hover {
  transform: translateY(-6px);
  border-color: rgba(31, 122, 92, .28);
  box-shadow: var(--shadow);
}

.topic-card:nth-child(2):hover {
  transform: translateY(12px);
}

.topic-card:nth-child(3):hover {
  transform: translateY(-16px);
}

.topic-icon {
  display: inline-flex;
  width: 50px;
  height: 50px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  border-radius: 16px;
  background: var(--green);
  color: #FFFFFF;
  margin-bottom: 18px;
}

.topic-card h3 {
  font-size: 18px;
  line-height: 1.35;
  margin-bottom: 12px;
}

.topic-card p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.topic-tile {
  background: linear-gradient(140deg, var(--deep), var(--deep-2));
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
}

.topic-tile .tile-tag {
  color: var(--gold);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
}

.topic-tile h3 {
  font-size: 20px;
  line-height: 1.4;
}

.topic-tile p {
  color: rgba(255, 255, 255, .74);
  font-size: 14px;
}

.feature-wrap-outer {
  background: transparent;
}

.feature-block {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.feature-content {
  padding: 50px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.side-tag {
  display: inline-flex;
  gap: 8px;
  color: var(--green);
  font-weight: 700;
  font-size: 13px;
  border: 1px solid rgba(31, 122, 92, .16);
  padding: 6px 14px;
  border-radius: 999px;
  width: fit-content;
  margin-bottom: 18px;
}

.feature-content h2 {
  font-size: clamp(1.6rem, 2.2vw, 2.2rem);
  line-height: 1.3;
  font-weight: 800;
  margin-bottom: 18px;
  color: var(--deep);
}

.feature-content .desc {
  color: var(--muted);
  font-size: 15px;
  line-height: 1.95;
  margin-bottom: 24px;
}

.feature-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 0 0 26px;
}

.feature-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--text);
  font-size: 15px;
}

.feature-list i {
  color: var(--green);
  margin-top: 5px;
}

.feature-visual {
  position: relative;
  min-height: 380px;
}

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

.feature-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, .8), transparent 35%);
}

.notice-strip {
  background: linear-gradient(180deg, var(--bg) 0%, #EEF2EC 100%);
  padding-top: 20px;
}

.notice-layout {
  display: grid;
  grid-template-columns: 1.22fr .78fr;
  gap: 40px;
  align-items: stretch;
}

.notice-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 34px;
}

.notice-list {
  margin: 18px 0 24px;
  list-style: none;
}

.notice-item {
  display: grid;
  grid-template-columns: 82px 1fr auto;
  gap: 18px;
  align-items: flex-start;
  padding: 22px 0 20px;
  border-bottom: 1px solid #EBEFEA;
}

.notice-item:first-child {
  padding-top: 8px;
}

.notice-date {
  font-size: 13px;
  color: var(--muted);
  background: var(--bg);
  border-radius: 999px;
  text-align: center;
  padding: 6px 0;
  line-height: 1.4;
}

.notice-title {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  transition: color .2s;
  color: var(--text);
}

.notice-title:hover {
  color: var(--green);
}

.notice-summary {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
  line-height: 1.6;
}

.notice-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(31, 122, 92, .08);
  color: var(--green);
  transition: background .25s, color .25s;
}

.notice-item:hover .notice-arrow {
  background: var(--green);
  color: #FFFFFF;
}

.notice-item:hover .notice-title {
  color: var(--green);
}

.notice-more {
  margin-top: 8px;
}

.aside-guide {
  background: linear-gradient(145deg, var(--deep), #1E4537);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 38px 34px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
}

.aside-guide h3 {
  font-size: 22px;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 16px;
}

.aside-guide p {
  color: rgba(255, 255, 255, .75);
  font-size: 15px;
  margin-bottom: 24px;
}

.step-list {
  list-style: none;
  display: grid;
  gap: 18px;
  margin-top: 8px;
}

.step-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.step-num {
  width: 30px;
  height: 30px;
  flex: 0 0 30px;
  border-radius: 50%;
  background: var(--gold);
  color: #17281F;
  font-size: 14px;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.step-list strong {
  display: block;
  margin-bottom: 2px;
}

.step-list span {
  color: rgba(255, 255, 255, .68);
  font-size: 13px;
}

.aside-guide a {
  margin-top: 30px;
}

.cross-band {
  padding: 40px 0 30px;
}

.cross-box {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 36px;
  align-items: center;
  background: linear-gradient(100deg, rgba(31, 122, 92, .10), rgba(226, 163, 59, .10));
  border: 1px solid rgba(31, 122, 92, .16);
  border-radius: var(--radius-xl);
  padding: 42px 46px;
}

.cross-box h2 {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  color: var(--deep);
  line-height: 1.35;
  font-weight: 800;
}

.cross-box p {
  color: var(--muted);
  margin-top: 12px;
  font-size: 15px;
}

.cross-box-right {
  text-align: right;
}

.faq-section {
  background: #FFFFFF;
}

.faq-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
}

details.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #FFFFFF;
  box-shadow: var(--shadow-sm);
  transition: box-shadow .25s, border-color .25s;
  align-self: start;
}

details.faq-item[open] {
  border-color: rgba(31, 122, 92, .28);
  box-shadow: var(--shadow);
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  cursor: pointer;
  list-style: none;
  list-style-type: none;
  align-items: center;
  padding: 22px 24px;
  font-weight: 700;
  font-size: 16px;
  min-height: 64px;
}

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

.faq-item summary i {
  color: var(--green);
  font-size: 14px;
  transition: transform .25s;
  flex: 0 0 auto;
}

.faq-item[open] summary i {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--muted);
  line-height: 1.9;
  font-size: 14.5px;
  max-width: 520px;
}

.subscribe-cta {
  background: var(--green);
  border-radius: var(--radius-xl);
  width: min(1160px, 100%);
  margin: 0 auto;
  background: linear-gradient(120deg, #155B46 0%, #1F7A5C 55%, #238A68 100%);
  color: #FFFFFF;
  padding: 40px 46px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  box-shadow: 0 24px 60px rgba(31, 122, 92, .25);
  position: relative;
  overflow: hidden;
  margin-top: 70px;
}

.subscribe-cta::before {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  top: -80px;
  right: 24%;
  border: 30px solid rgba(255, 255, 255, .07);
}

.subscribe-cta .cta-icon {
  font-size: 32px;
  width: 70px;
  height: 70px;
  background: rgba(255, 255, 255, .16);
  border-radius: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.subscribe-cta h2 {
  font-size: clamp(1.6rem, 2.6vw, 2.25rem);
  letter-spacing: -.02em;
}

.subscribe-cta p {
  color: rgba(255, 255, 255, .86);
  max-width: 600px;
  margin-top: 10px;
  font-size: 16px;
}

.subscribe-cta .btn {
  position: relative;
  z-index: 2;
}

.site-footer {
  background: var(--deep);
  color: rgba(255, 255, 255, .78);
  padding: 78px 0 38px;
  margin-top: 90px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 46px;
}

.footer-brand .logo-line {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.footer-brand .logo-line i {
  color: var(--gold);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.85;
  max-width: 330px;
}

.footer-title {
  color: #FFFFFF;
  font-weight: 700;
  margin-bottom: 20px;
  font-size: 15px;
}

.footer-links {
  list-style: none;
  display: grid;
  gap: 12px;
}

.footer-links a,
.footer-links li {
  color: rgba(255, 255, 255, .68);
  font-size: 14px;
  transition: color .2s;
}

.footer-links a:hover {
  color: var(--gold);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.footer-contact i {
  color: var(--green);
  margin-top: 5px;
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding-top: 28px;
  font-size: 13px;
  color: rgba(255, 255, 255, .46);
}

.overlay-tag {
  display: inline-block;
  color: var(--green);
  background: rgba(31, 122, 92, .06);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
}

@media (max-width: 1024px) {
  .section {
    padding: 76px 0;
  }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .hero-section {
    padding-top: 150px;
  }
  .hero-card {
    max-width: 560px;
  }
  .topic-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .topic-card:nth-child(2),
  .topic-card:nth-child(3) {
    transform: none;
  }
  .topic-card:nth-child(2):hover,
  .topic-card:nth-child(3):hover {
    transform: translateY(-6px);
  }
  .feature-block {
    grid-template-columns: 1fr;
  }
  .feature-visual {
    min-height: 380px;
    order: -1;
  }
  .feature-visual::after {
    background: linear-gradient(180deg, rgba(255, 255, 255, .12), transparent 50%);
  }
  .notice-layout {
    grid-template-columns: 1fr;
  }
  .faq-list {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 840px) {
  .nav-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(255, 255, 255, .97);
    backdrop-filter: blur(16px);
    border-radius: 24px;
    padding: 12px;
    display: none;
    box-shadow: 0 20px 54px rgba(18, 43, 35, .14);
    border: 1px solid rgba(255, 255, 255, .7);
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-toggle {
    display: inline-flex;
  }
  .nav-link {
    padding: 13px 20px;
    border-radius: 14px;
    font-size: 16px;
    justify-content: center;
  }
  .nav-shell {
    padding: 8px 10px 8px 14px;
  }
  .brand > span:last-child {
    font-size: 17px;
  }
  .brand-sub {
    font-size: 9px;
  }
  .hero-section {
    padding-top: 140px;
  }
  .hero-section h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  .hero-buttons .btn {
    width: calc(50% - 7px);
    padding-left: 18px;
    padding-right: 18px;
  }
  .topic-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container,
  .grid-container {
    width: min(1200px, calc(100% - 32px));
  }
  .section {
    padding: 62px 0;
  }
  .section-head {
    margin-bottom: 32px;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .hero-card {
    padding: 20px;
  }
  .feature-content {
    padding: 30px 24px;
  }
  .notice-card {
    padding: 22px;
  }
  .notice-item {
    grid-template-columns: 66px 1fr;
    gap: 10px;
  }
  .notice-arrow {
    display: none;
  }
  .cross-box {
    grid-template-columns: 1fr;
    padding: 32px 24px;
  }
  .cross-box-right {
    text-align: left;
  }
  .subscribe-cta {
    margin-top: 46px;
    padding: 30px 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .site-footer {
    padding-top: 60px;
  }
  .faq-item summary {
    padding: 18px 18px;
    font-size: 14.5px;
  }
}

/* roulang page: article */
:root {
            --green-600: #1F7A5C;
            --green-700: #176049;
            --dark: #122B23;
            --ink: #24332C;
            --muted: #5E6E65;
            --cream: #F5F6F3;
            --white: #FFFFFF;
            --amber: #E2A33B;
            --border: #E1E9E3;
            --radius-lg: 22px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 18px rgba(18, 43, 35, 0.07);
            --shadow-md: 0 18px 44px rgba(18, 43, 35, 0.12);
            --shadow-lg: 0 30px 70px rgba(18, 43, 35, 0.18);
            --container: 1200px;
            --font: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--green-600);
            transition: color .2s ease;
        }

        a:hover {
            color: var(--green-700);
        }

        button,
        input,
        textarea {
            font: inherit;
        }

        ul,
        ol {
            list-style-position: inside;
        }

        .grid-container {
            max-width: var(--container);
            margin: 0 auto;
            width: 100%;
        }

        ::selection {
            background: rgba(226, 163, 59, .24);
            color: var(--dark);
        }

        :focus-visible {
            outline: 3px solid rgba(226, 163, 59, .55);
            outline-offset: 3px;
        }

        .site-header {
            position: fixed;
            top: 14px;
            left: 0;
            right: 0;
            z-index: 180;
            padding: 0 14px;
            pointer-events: none;
        }

        .nav-shell {
            position: relative;
            max-width: 1180px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 18px;
            background: rgba(18, 43, 35, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 999px;
            padding: 10px 14px 10px 18px;
            box-shadow: 0 18px 50px rgba(18, 43, 35, 0.28);
            pointer-events: auto;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            text-decoration: none;
            font-weight: 800;
            font-size: 1.05rem;
            line-height: 1.2;
            letter-spacing: .02em;
            border-radius: 999px;
        }

        .brand:hover {
            color: #fff;
        }

        .brand-mark {
            width: 42px;
            height: 42px;
            flex: 0 0 42px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: linear-gradient(140deg, #2e9b77, #1F7A5C);
            color: #fff;
            font-size: 1.08rem;
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.12), 0 6px 14px rgba(0, 0, 0, .18);
        }

        .brand-sub {
            display: block;
            font-size: .7rem;
            font-weight: 600;
            letter-spacing: .05em;
            color: rgba(255, 255, 255, 0.74);
            margin-top: 1px;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 40px;
            padding: 8px 18px;
            border-radius: 999px;
            color: rgba(255, 255, 255, .84);
            text-decoration: none;
            font-size: .95rem;
            font-weight: 600;
            letter-spacing: .01em;
            transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .1);
            transform: translateY(-1px);
        }

        .nav-link:active {
            background: rgba(255, 255, 255, .18);
            transform: translateY(0);
        }

        .nav-link.active {
            color: #fff;
            background: rgba(255, 255, 255, .16);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .15);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            padding: 10px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .16);
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            cursor: pointer;
            transition: background .2s ease;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .18);
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            border-radius: 4px;
            background: #fff;
            transition: transform .3s ease, opacity .3s ease;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .article-hero {
            background:
                linear-gradient(135deg, rgba(18, 43, 35, .98) 0%, rgba(31, 93, 70, .92) 54%, rgba(24, 86, 64, .78) 100%),
                url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            color: #fff;
            padding: 152px 0 88px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::after {
            content: "";
            position: absolute;
            right: -120px;
            bottom: -180px;
            width: 460px;
            height: 460px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(226, 163, 59, .18), transparent 68%);
            pointer-events: none;
        }

        .article-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .article-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .14);
            color: rgba(255, 255, 255, .86);
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .02em;
        }

        .article-eyebrow i {
            color: var(--amber);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 30px;
            font-size: .88rem;
            color: rgba(255, 255, 255, .62);
            line-height: 1.6;
        }

        .breadcrumb a {
            color: rgba(255, 255, 255, .78);
            text-decoration: none;
            border-radius: 4px;
            transition: color .2s ease;
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        .breadcrumb .crumb-sep {
            color: rgba(255, 255, 255, .4);
        }

        .breadcrumb .crumb-current {
            max-width: 260px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            color: rgba(255, 255, 255, .9);
        }

        .article-hero h1 {
            font-size: clamp(2rem, 4vw, 3.15rem);
            line-height: 1.18;
            font-weight: 900;
            letter-spacing: -0.02em;
            max-width: 920px;
            margin: 22px 0 24px;
            text-wrap: balance;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px 14px;
            margin-top: 10px;
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .12);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .84rem;
            color: rgba(255, 255, 255, .84);
            line-height: 1.4;
        }

        .meta-item i {
            color: var(--amber);
        }

        .article-body-section {
            background: var(--cream);
            padding: 0 0 90px;
        }

        .article-paper {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 26px;
            box-shadow: var(--shadow-md);
            margin-top: -42px;
            padding: clamp(24px, 4.5vw, 58px);
            position: relative;
        }

        .article-cover {
            margin-bottom: 34px;
            border-radius: 18px;
            overflow: hidden;
            border: 1px solid var(--border);
            background: #eef2ef;
        }

        .article-cover img {
            width: 100%;
            height: auto;
            max-height: 420px;
            object-fit: cover;
        }

        .article-cover .cover-caption {
            display: block;
            padding: 10px 16px;
            font-size: .82rem;
            color: var(--muted);
            background: #f8faf7;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.95;
            color: #2c3a33;
        }

        .article-body p {
            margin: 0 0 1.35em;
        }

        .article-body h2 {
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--dark);
            margin: 1.8em 0 .75em;
            letter-spacing: -.01em;
            line-height: 1.35;
        }

        .article-body h3 {
            font-size: 1.28rem;
            font-weight: 800;
            color: var(--dark);
            margin: 1.6em 0 .6em;
            line-height: 1.4;
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--green-700);
            margin: 1.5em 0 .5em;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.4em;
            padding-left: 1.2em;
        }

        .article-body li {
            margin-bottom: .5em;
        }

        .article-body ul li::marker {
            color: var(--green-600);
        }

        .article-body ol li::marker {
            color: var(--green-600);
            font-weight: 700;
        }

        .article-body blockquote {
            display: block;
            margin: 1.8em 0;
            padding: 18px 22px;
            border-left: 4px solid var(--green-600);
            background: #f0f6f2;
            border-radius: 0 16px 16px 0;
            color: #31503f;
            font-size: 1.06rem;
        }

        .article-body blockquote p:last-child,
        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body a {
            color: var(--green-600);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--green-700);
            text-decoration: none;
        }

        .article-body img {
            border-radius: 16px;
            border: 1px solid var(--border);
            margin: 1.6em auto;
            height: auto;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: .97rem;
            border-radius: 12px;
            overflow: hidden;
        }

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

        .article-body th {
            background: #eef5f0;
            color: var(--dark);
            font-weight: 700;
        }

        .article-body pre {
            background: var(--dark);
            color: #e7f3ed;
            padding: 20px;
            border-radius: 14px;
            overflow: auto;
            line-height: 1.7;
            font-size: .94rem;
            margin: 1.5em 0;
        }

        .article-body code {
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            background: #eef3ef;
            padding: .15em .4em;
            border-radius: 6px;
            font-size: .92em;
        }

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

        .article-body hr {
            margin: 2.2em 0;
            border: 0;
            border-top: 1px solid var(--border);
        }

        .article-backbar {
            margin-top: 42px;
            padding-top: 28px;
            border-top: 1px solid var(--border);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 12px 22px;
            font-size: .96rem;
            font-weight: 700;
            line-height: 1.3;
            text-decoration: none;
            border: 1px solid transparent;
            cursor: pointer;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
            white-space: nowrap;
        }

        .btn:active {
            transform: translateY(1px) scale(.99);
        }

        .btn-primary {
            background: var(--green-600);
            color: #fff;
            box-shadow: 0 10px 24px rgba(31, 122, 92, .25);
        }

        .btn-primary:hover {
            background: var(--green-700);
            color: #fff;
            box-shadow: 0 14px 30px rgba(31, 122, 92, .32);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .48);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, .06);
            border-color: rgba(255, 255, 255, .8);
            color: #fff;
        }

        .btn-ghost {
            background: var(--cream);
            color: var(--ink);
            border-color: var(--border);
        }

        .btn-ghost:hover {
            background: #fff;
            color: var(--green-700);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        .btn-sm {
            padding: 9px 16px;
            font-size: .88rem;
        }

        .not-found-paper {
            text-align: center;
        }

        .not-found-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 22px;
            border-radius: 50%;
            background: #f0f8f3;
            display: grid;
            place-items: center;
            color: var(--green-600);
            font-size: 1.9rem;
            border: 1px solid #d9eadf;
        }

        .not-found-paper h2 {
            font-size: 1.7rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0 0 10px;
        }

        .not-found-paper p {
            color: var(--muted);
            margin: 0 auto 26px;
            max-width: 430px;
        }

        .not-found-paper .btn-primary {
            margin: 0 auto;
        }

        .directory-block {
            background: #fff;
            padding: 76px 0 100px;
        }

        .section-heading {
            text-align: center;
            margin-bottom: 44px;
        }

        .section-heading .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .85rem;
            font-weight: 700;
            color: var(--green-600);
            background: #ecf5f0;
            border-radius: 999px;
            padding: 6px 16px;
            letter-spacing: .04em;
        }

        .section-heading h2 {
            font-size: clamp(1.6rem, 3vw, 2.3rem);
            font-weight: 900;
            color: var(--dark);
            line-height: 1.3;
            margin: 14px 0 0;
            letter-spacing: -0.02em;
        }

        .section-heading .subline {
            max-width: 620px;
            margin: 10px auto 0;
            color: var(--muted);
        }

        .directory-flex {
            display: flex;
            gap: 28px;
            align-items: stretch;
        }

        .directory-card {
            flex: 1;
            display: flex;
            background: var(--cream);
            border: 1px solid var(--border);
            border-radius: 22px;
            overflow: hidden;
            text-decoration: none;
            color: inherit;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
            min-width: 0;
        }

        .directory-card:hover {
            transform: translateY(-6px);
            border-color: rgba(31, 122, 92, .35);
            box-shadow: 0 24px 60px rgba(18, 43, 35, .13);
            color: inherit;
        }

        .directory-card.feature {
            flex: 1.15;
        }

        .directory-card__thumb {
            flex: 0 0 42%;
            min-height: 260px;
            overflow: hidden;
            position: relative;
            background: #eef3f0;
        }

        .directory-card__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform .5s ease;
        }

        .directory-card:hover .directory-card__thumb img {
            transform: scale(1.04);
        }

        .directory-card__content {
            flex: 1;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .directory-tag {
            display: inline-flex;
            width: max-content;
            align-items: center;
            gap: 7px;
            padding: 5px 13px;
            background: rgba(31, 122, 92, .1);
            color: var(--green-700);
            font-size: .78rem;
            font-weight: 700;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .directory-tag.amber {
            background: rgba(226, 163, 59, .16);
            color: #a36d18;
        }

        .directory-card h3 {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--dark);
            letter-spacing: -0.02em;
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .directory-card p {
            color: var(--muted);
            font-size: .95rem;
            line-height: 1.8;
            margin-bottom: 18px;
        }

        .directory-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--green-600);
            font-weight: 700;
            font-size: .94rem;
            margin-top: auto;
        }

        .directory-link i {
            transition: transform .2s ease;
        }

        .directory-card:hover .directory-link i {
            transform: translateX(4px);
        }

        .bottom-cta {
            background:
                linear-gradient(120deg, rgba(18, 43, 35, .96) 0%, rgba(22, 88, 66, .94) 55%, rgba(31, 122, 92, .88) 100%),
                url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            color: #fff;
            padding: 70px 0;
            text-align: center;
        }

        .bottom-cta .cta-inner {
            max-width: 760px;
            margin: 0 auto;
        }

        .bottom-cta h2 {
            font-size: clamp(1.55rem, 3vw, 2.3rem);
            font-weight: 900;
            line-height: 1.35;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .bottom-cta p {
            color: rgba(255, 255, 255, .76);
            margin: 0 auto 28px;
            max-width: 620px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 66px 0 30px;
        }

        .site-footer a {
            color: rgba(255, 255, 255, .64);
            text-decoration: none;
            transition: color .2s ease, padding-left .2s ease;
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 38px;
            padding-bottom: 46px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }

        .footer-brand .logo-line {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.08rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-line i {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: var(--green-600);
            color: #fff;
        }

        .footer-brand p {
            font-size: .92rem;
            line-height: 1.85;
            max-width: 360px;
            color: rgba(255, 255, 255, .62);
        }

        .footer-title {
            font-size: .98rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 11px;
        }

        .footer-links a:hover {
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: .92rem;
            color: rgba(255, 255, 255, .62);
        }

        .footer-contact i {
            color: var(--green-600);
            margin-top: 5px;
        }

        .footer-bottom {
            padding-top: 26px;
            text-align: center;
            font-size: .88rem;
            color: rgba(255, 255, 255, .44);
        }

        @media (max-width: 1024px) {
            .article-paper {
                margin-top: -30px;
            }

            .article-backbar {
                flex-direction: column;
                align-items: flex-start;
            }

            .directory-flex {
                gap: 20px;
            }

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

        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                position: absolute;
                top: calc(100% + 12px);
                right: 0;
                left: auto;
                flex-direction: column;
                align-items: stretch;
                justify-content: flex-start;
                gap: 4px;
                background: #fff;
                min-width: 240px;
                margin-left: 0;
                padding: 10px;
                border-radius: 22px;
                box-shadow: 0 20px 50px rgba(18, 43, 35, .22);
                display: none;
                border: 1px solid #e9f0eb;
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-link {
                justify-content: flex-start;
                color: var(--ink);
                background: transparent;
                padding: 11px 16px;
                border-radius: 14px;
                min-height: 46px;
            }

            .nav-link:hover {
                color: var(--green-600);
                background: #edf6f1;
            }

            .nav-link.active {
                color: var(--green-700);
                background: #e7f2eb;
                box-shadow: none;
            }
        }

        @media (max-width: 820px) {
            .directory-flex {
                flex-direction: column;
            }

            .directory-card.feature {
                flex: 1;
            }

            .directory-card__thumb {
                flex-basis: 180px;
                min-height: 180px;
            }

            .directory-card {
                flex-direction: row;
            }

            .directory-card__content {
                padding: 24px;
            }
        }

        @media (max-width: 640px) {
            .article-hero {
                padding-top: 128px;
                padding-bottom: 60px;
            }

            .article-hero h1 {
                font-size: 1.8rem;
            }

            .article-body {
                font-size: 1rem;
            }

            .article-body-section {
                padding-bottom: 56px;
            }

            .article-paper {
                margin-top: -20px;
                padding: 20px 18px;
                border-radius: 20px;
            }

            .article-body h2 {
                font-size: 1.32rem;
            }

            .article-body h3 {
                font-size: 1.14rem;
            }

            .directory-block {
                padding: 56px 0 64px;
            }

            .directory-card {
                flex-direction: column;
            }

            .directory-card__thumb {
                flex-basis: auto;
                min-height: 180px;
                position: relative;
            }

            .directory-card__thumb img {
                position: absolute;
                inset: 0;
                width: 100%;
                height: 100%;
            }

            .directory-card__content {
                padding: 24px 20px;
            }

            .article-meta {
                gap: 8px;
            }

            .meta-item {
                font-size: .78rem;
                padding: 5px 10px;
            }

            .bottom-cta {
                padding: 52px 0;
            }

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

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

            .footer-bottom {
                text-align: left;
            }
        }

        @media (max-width: 520px) {
            .site-header {
                top: 8px;
                padding-left: 10px;
                padding-right: 10px;
            }

            .nav-shell {
                padding-left: 12px;
                border-radius: 24px;
            }

            .brand {
                font-size: .96rem;
            }

            .brand-mark {
                width: 36px;
                height: 36px;
                flex-basis: 36px;
                font-size: 1rem;
            }

            .brand-sub {
                font-size: .62rem;
            }

            .article-cover {
                border-radius: 14px;
                margin-bottom: 24px;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #1F7A5C;
            --brand-dark: #175C46;
            --brand-soft: #E4F2EC;
            --amber: #E2A33B;
            --ink: #24332C;
            --muted: #5E6E65;
            --bg: #F5F6F3;
            --white: #ffffff;
            --deep: #122B23;
            --deep-soft: #1B3A30;
            --border: #DFE7E0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 4px 16px rgba(18, 43, 35, .06);
            --shadow-md: 0 14px 36px rgba(18, 43, 35, .08);
            --shadow-lg: 0 24px 60px rgba(18, 43, 35, .12);
            --font-main: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --transition: .28s cubic-bezier(.4, .2, .2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
        }

        a:hover {
            color: var(--brand-dark);
        }

        button {
            font-family: inherit;
            cursor: pointer;
        }

        :focus-visible {
            outline: 3px solid rgba(31, 122, 92, .30);
            outline-offset: 2px;
            border-radius: 6px;
        }

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

        .section-block {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        @media (max-width: 760px) {
            .section-block {
                padding-top: 64px;
                padding-bottom: 64px;
            }
        }

        /* Header Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 80;
            padding: 16px 20px 0;
        }

        .nav-shell {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            background: rgba(255, 255, 255, .86);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(31, 122, 92, .10);
            box-shadow: 0 8px 30px rgba(18, 43, 35, .08);
            padding: 10px 14px 10px 20px;
            border-radius: 999px;
        }

        .nav-shell .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            font-size: 1.06rem;
            color: var(--ink);
            line-height: 1.2;
        }

        .brand-mark {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--brand), var(--brand-dark));
            color: #fff;
            font-size: 1.1rem;
            box-shadow: 0 4px 12px rgba(31, 122, 92, .24);
            flex: 0 0 auto;
        }

        .brand-sub {
            display: block;
            font-size: .7rem;
            font-weight: 600;
            letter-spacing: .06em;
            color: var(--brand);
            text-transform: uppercase;
        }

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

        .nav-link {
            font-weight: 600;
            color: var(--ink);
            font-size: .92rem;
            padding: 9px 16px;
            border-radius: 999px;
            border: 1px solid transparent;
            line-height: 1.4;
        }

        .nav-link:hover {
            background: var(--brand-soft);
            color: var(--brand-dark);
            border-color: rgba(31, 122, 92, .10);
        }

        .nav-link.active {
            background: var(--brand);
            color: #fff;
            box-shadow: 0 6px 18px rgba(31, 122, 92, .20);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            border: 0;
            background: var(--brand-soft);
            border-radius: 50%;
            padding: 10px;
            align-items: center;
        }

        .nav-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            background: var(--brand-dark);
            border-radius: 2px;
            transition: transform .25s ease, opacity .25s ease;
        }

        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 820px) {
            .nav-toggle {
                display: flex;
            }

            .site-header {
                padding: 12px 14px 0;
            }

            .nav-shell {
                padding: 8px 10px 8px 14px;
            }

            .nav-menu {
                display: none;
                position: absolute;
                left: 14px;
                right: 14px;
                top: calc(100% + 18px);
                flex-direction: column;
                align-items: stretch;
                background: rgba(255, 255, 255, .97);
                backdrop-filter: blur(20px);
                border-radius: 24px;
                padding: 16px;
                gap: 10px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border);
            }

            .nav-menu.open {
                display: flex;
            }

            .nav-link {
                padding: 13px 16px;
                font-size: 1rem;
                text-align: center;
            }
        }

        /* Category Hero */
        .cat-hero {
            position: relative;
            color: #f7fbf9;
            padding: 178px 0 90px;
            overflow: hidden;
            background-color: var(--deep);
            background-image: linear-gradient(118deg, rgba(10, 28, 23, .94), rgba(18, 43, 35, .76) 58%, rgba(31, 122, 92, .72)), url("/assets/images/backpic/back-2.webp");
            background-size: cover;
            background-position: center;
        }

        .cat-hero::before {
            content: "";
            position: absolute;
            width: 460px;
            height: 460px;
            right: -90px;
            top: -120px;
            background: radial-gradient(circle, rgba(226, 163, 59, .22), transparent 68%);
            pointer-events: none;
        }

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

        .breadcrumb-cat {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 26px;
            font-size: .88rem;
            color: rgba(240, 248, 245, .78);
        }

        .breadcrumb-cat a {
            color: rgba(255, 255, 255, .88);
            border-bottom: 1px solid rgba(255, 255, 255, .25);
        }

        .breadcrumb-cat a:hover {
            color: #fff;
            border-color: var(--amber);
        }

        .cat-hero h1 {
            font-size: clamp(2.3rem, 4.4vw, 3.8rem);
            line-height: 1.18;
            letter-spacing: -.02em;
            color: #fff;
            margin: 0 0 18px;
            font-weight: 900;
            max-width: 720px;
        }

        .cat-hero h1 .text-accent {
            color: var(--amber);
            position: relative;
            white-space: nowrap;
        }

        .cat-hero-sub {
            font-size: 1.09rem;
            max-width: 600px;
            margin-bottom: 30px;
            color: rgba(240, 248, 245, .90);
            line-height: 1.85;
        }

        .hero-btn-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 34px;
        }

        .cat-hero-badge {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 6px;
        }

        .pill-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .83rem;
            font-weight: 600;
            background: rgba(255, 255, 255, .10);
            border: 1px solid rgba(255, 255, 255, .18);
            padding: 6px 14px;
            border-radius: 999px;
            color: rgba(255, 255, 255, .94);
            backdrop-filter: blur(8px);
        }

        .pill-tag i {
            color: var(--amber);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 12px;
            font-weight: 700;
            font-size: .95rem;
            line-height: 1.2;
            padding: 13px 22px;
            border: 1.5px solid transparent;
            transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
            min-height: 46px;
        }

        .btn-light {
            background: var(--white);
            color: var(--brand-dark);
            box-shadow: 0 10px 26px rgba(255, 255, 255, .12);
        }

        .btn-light:hover {
            transform: translateY(-3px);
            color: var(--brand-dark);
            box-shadow: 0 14px 28px rgba(255, 255, 255, .14);
        }

        .btn-glow {
            background: linear-gradient(120deg, var(--brand), var(--brand-dark));
            color: #fff;
            box-shadow: 0 10px 26px rgba(31, 122, 92, .35);
        }

        .btn-glow:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 38px rgba(31, 122, 92, .35);
            color: #fff;
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .5);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .10);
            border-color: #fff;
            color: #fff;
        }

        .btn-ghost {
            border-color: rgba(31, 122, 92, .30);
            color: var(--brand-dark);
            background: transparent;
        }

        .btn-ghost:hover {
            border-color: var(--brand);
            background: var(--brand-soft);
            color: var(--brand-dark);
        }

        @media (max-width: 520px) {
            .btn {
                width: 100%;
            }
            .hero-btn-row {
                flex-direction: column;
            }
        }

        /* Section common */
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: .76rem;
            font-weight: 800;
            letter-spacing: .11em;
            color: var(--brand);
            background: var(--brand-soft);
            padding: 6px 16px;
            border-radius: 999px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(1.6rem, 2.6vw, 2.4rem);
            line-height: 1.22;
            color: var(--ink);
            margin: 0 0 14px;
            font-weight: 900;
            letter-spacing: -.015em;
        }

        .section-sub {
            color: var(--muted);
            font-size: 1.02rem;
            max-width: 680px;
            line-height: 1.9;
            margin-bottom: 44px;
        }

        /* intro */
        .intro-block {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .intro-grid {
            align-items: center;
            gap: 48px 0;
        }

        .intro-copy h2 {
            font-size: clamp(1.5rem, 2.2vw, 2.1rem);
            font-weight: 850;
            margin-bottom: 18px;
            line-height: 1.3;
        }

        .intro-copy p {
            color: var(--muted);
            margin-bottom: 24px;
            line-height: 1.9;
            font-size: 1rem;
        }

        .intro-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 14px;
        }

        .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-weight: 600;
            color: var(--ink);
            background: var(--bg);
            border-radius: 14px;
            padding: 14px 16px;
            border: 1px solid #ebf0ec;
            line-height: 1.6;
            font-size: .95rem;
        }

        .intro-list i {
            color: var(--brand);
            margin-top: 4px;
            font-size: 1.05rem;
            flex: 0 0 auto;
        }

        .intro-media {
            position: relative;
        }

        .intro-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(31, 122, 92, .10);
        }

        .intro-media::after {
            content: "";
            position: absolute;
            left: -20px;
            top: -20px;
            width: 100%;
            height: 100%;
            border: 2px solid var(--brand);
            border-radius: var(--radius-lg);
            z-index: 0;
            opacity: .28;
            pointer-events: none;
        }

        @media (min-width: 1120px) and (max-width: 1200px) {
            .intro-list li {
                font-size: .9rem;
            }
        }

        /* Steps */
        .steps-block {
            background: var(--bg);
        }

        .steps-block .section-title,
        .steps-block .section-sub {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .steps-list {
            margin-top: 18px;
            row-gap: 34px;
        }

        .step-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px 24px 28px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            position: relative;
            height: calc(100% - 20px);
            margin-bottom: 20px;
        }

        @media (min-width: 1024px) {
            .step-card:nth-child(2) {
                transform: translateY(30px);
            }

            .step-card:hover {
                transform: translateY(-6px);
                box-shadow: var(--shadow-md);
            }
            .step-card:nth-child(2):hover {
                transform: translateY(24px);
            }
        }

        .step-num {
            width: 48px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--brand);
            color: #fff;
            border-radius: 14px;
            font-weight: 900;
            font-size: 1.15rem;
            margin-bottom: 18px;
            box-shadow: 0 8px 16px rgba(31, 122, 92, .2);
        }

        .step-card h3 {
            font-size: 1.18rem;
            font-weight: 800;
            margin-bottom: 10px;
            color: var(--ink);
        }

        .step-card p {
            color: var(--muted);
            font-size: .96rem;
            line-height: 1.85;
            margin-bottom: 0;
        }

        .step-note {
            display: flex;
            gap: 10px;
            align-items: baseline;
            background: var(--brand-soft);
            color: var(--brand-dark);
            border-radius: 14px;
            padding: 14px 16px;
            margin-top: 44px;
            font-size: .9rem;
            max-width: 780px;
            border: 1px solid rgba(31, 122, 92, .12);
        }

        .step-note i {
            color: var(--brand);
        }

        /* Topics */
        .topics-block {
            background: var(--white);
        }

        .topics-head {
            display: flex;
            align-items: flex-end;
            gap: 30px;
            flex-wrap: wrap;
            justify-content: space-between;
            margin-bottom: 48px;
        }

        .topics-head .section-sub {
            margin-bottom: 0;
            text-align: right;
        }

        .topic-list {
            display: grid;
            gap: 40px;
        }

        .topic-item {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 0 44px;
            align-items: center;
        }

        .topic-media {
            grid-column: 1 / 8;
            position: relative;
        }

        .topic-media img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 22px;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(31, 122, 92, .10);
        }

        .topic-content {
            grid-column: 8 / 13;
        }

        .topic-item.flip .topic-media {
            grid-column: 6 / 13;
            grid-row: 1;
        }

        .topic-item.flip .topic-content {
            grid-column: 1 / 6;
            grid-row: 1;
        }

        .topic-item.ml-off {
            margin-left: 4%;
        }

        .topic-item.mr-off {
            margin-right: 4%;
        }

        .topic-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: .78rem;
            font-weight: 800;
            color: var(--brand-dark);
            background: var(--brand-soft);
            border-radius: 999px;
            padding: 6px 13px;
            margin-bottom: 14px;
            border: 1px solid rgba(31, 122, 92, .15);
        }

        .topic-content h3 {
            font-size: 1.5rem;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--ink);
            font-weight: 850;
        }

        .topic-content p {
            color: var(--muted);
            font-size: .97rem;
            line-height: 1.9;
            margin-bottom: 18px;
        }

        .topic-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            font-size: .92rem;
            color: var(--brand);
            border-bottom: 2px solid transparent;
            padding-bottom: 2px;
        }

        .topic-link:hover {
            border-color: var(--brand);
            color: var(--brand-dark);
            gap: 12px;
        }

        @media (max-width: 1024px) {
            .topic-item,
            .topic-item.flip,
            .topic-item.ml-off,
            .topic-item.mr-off {
                margin-left: 0;
                margin-right: 0;
                display: grid;
                grid-template-columns: 1fr;
                gap: 22px;
            }

            .topic-item .topic-media,
            .topic-item .topic-content,
            .topic-item.flip .topic-media,
            .topic-item.flip .topic-content {
                grid-column: 1 / -1;
                grid-row: auto;
            }

            .topic-media img {
                aspect-ratio: 16 / 9;
            }
        }

        /* FAQ */
        .faq-block {
            background: var(--bg);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            align-items: start;
        }

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

        .faq-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(31, 122, 92, .25);
        }

        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
            list-style: none;
            cursor: pointer;
            font-weight: 800;
            color: var(--ink);
            padding: 22px 22px;
            line-height: 1.6;
            min-height: 56px;
            font-size: 1rem;
        }

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

        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: .85rem;
            color: var(--brand);
            background: var(--brand-soft);
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex: 0 0 auto;
            transition: transform .25s ease;
        }

        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-item[open] summary {
            border-bottom: 1px solid var(--border);
        }

        .faq-item .faq-answer {
            padding: 18px 22px 22px;
            color: var(--muted);
            font-size: .94rem;
            line-height: 1.85;
            border-left: 3px solid var(--brand);
            margin: 0 20px 18px 0;
            background: var(--bg);
            border-radius: 0 10px 10px 0;
        }

        @media (max-width: 900px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        .safety-line {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: #F8EFDF;
            border: 1px solid #ECD9AF;
            border-radius: 14px;
            padding: 16px 18px;
            font-size: .9rem;
            color: #6b5427;
            margin-top: 20px;
            line-height: 1.8;
        }

        .safety-line i {
            color: var(--amber);
            font-size: 1.15rem;
            margin-top: 3px;
        }

        /* CTA */
        .cat-cta {
            background: linear-gradient(140deg, var(--deep), var(--deep-soft)), url("/assets/images/backpic/back-3.webp");
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
            border-radius: 0;
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
        }

        .cat-cta h2 {
            color: #fff;
            font-size: clamp(1.7rem, 3vw, 2.6rem);
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: -.01em;
        }

        .cat-cta p {
            color: rgba(255, 255, 255, .84);
            line-height: 1.9;
            font-size: 1rem;
            margin-bottom: 28px;
        }

        /* Footer */
        .site-footer {
            background: var(--deep);
            color: rgba(255, 255, 255, .76);
            padding-top: 68px;
            padding-bottom: 24px;
            font-size: .95rem;
            line-height: 1.8;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 44px;
            padding-bottom: 42px;
        }

        .footer-brand .logo-line {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand .logo-line i {
            color: var(--amber);
        }

        .footer-brand p {
            color: rgba(255, 255, 255, .68);
            font-size: .92rem;
            max-width: 320px;
            line-height: 1.85;
        }

        .footer-title {
            color: #fff;
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
            display: inline-block;
            padding-bottom: 6px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px;
        }

        .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .72);
            font-size: .92rem;
        }

        .footer-links a:hover {
            color: #fff;
            border-bottom: 1px solid var(--amber);
        }

        .footer-contact li {
            display: flex;
            gap: 9px;
            align-items: flex-start;
            color: rgba(255, 255, 255, .76);
        }

        .footer-contact i {
            color: var(--amber);
            margin-top: 5px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            padding-top: 18px;
            font-size: .85rem;
            color: rgba(255, 255, 255, .5);
            text-align: center;
            letter-spacing: .01em;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }