/* roulang page: index */
:root {
            --color-primary: #0E7C6B;
            --color-primary-dark: #0A5D4F;
            --color-accent: #E9A13B;
            --color-dark: #0B2522;
            --color-dark-soft: #123B36;
            --color-light: #F6F5F1;
            --color-text: #1F2933;
            --color-text-light: #5B6B7A;
            --color-border: #E4E2DC;
            --radius-sm: 0.75rem;
            --radius-md: 1rem;
            --radius-full: 9999px;
            --shadow-sm: 0 1px 3px rgba(11, 37, 34, 0.06), 0 4px 12px rgba(11, 37, 34, 0.05);
            --shadow-hover: 0 8px 24px rgba(11, 37, 34, 0.1);
            --container-width: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--color-text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ===== 顶部信息条 ===== */
        .topbar {
            background: var(--color-dark);
            color: #C8D6D2;
            font-size: 0.875rem;
            padding: 0.25rem 0;
            height: 36px;
            display: flex;
            align-items: center;
        }

        .topbar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .topbar-domain {
            font-size: 0.8125rem;
            letter-spacing: 0.02em;
            color: rgba(255, 255, 255, 0.7);
        }

        .topbar-tip {
            display: none;
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.8125rem;
        }

        .topbar-actions {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .topbar-link {
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.8125rem;
            transition: color 0.2s;
        }

        .topbar-link:hover {
            color: var(--color-accent);
        }

        .topbar-link.accent {
            color: var(--color-accent);
            font-weight: 600;
        }

        @media (min-width: 768px) {
            .topbar-tip {
                display: inline-block;
            }
        }

        /* ===== 主导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow 0.3s;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(11, 37, 34, 0.08);
        }

        .nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1.5rem;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            background: var(--color-primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            box-shadow: 0 2px 8px rgba(14, 124, 107, 0.3);
            position: relative;
            overflow: hidden;
        }

        .logo-mark::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-accent);
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-dark);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .logo-text span {
            color: var(--color-primary);
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 0.4rem;
        }

        .nav-link {
            position: relative;
            padding: 0.5rem 0.9rem;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--color-text);
            border-radius: 6px;
            transition: color 0.2s, background 0.2s;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--color-primary);
            transition: width 0.25s;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(14, 124, 107, 0.04);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 60%;
        }

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

        .btn-nav {
            display: none;
            padding: 0.5rem 1.4rem;
            font-size: 0.875rem;
        }

        .menu-toggle {
            width: 42px;
            height: 42px;
            border-radius: 8px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            border: 1px solid var(--color-border);
            background: #fff;
        }

        .menu-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-dark);
            border-radius: 2px;
            transition: all 0.3s;
        }

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

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

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

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-top: 1px solid var(--color-border);
            padding: 1rem 1.25rem 1.5rem;
            gap: 0.25rem;
        }

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

        .mobile-link {
            padding: 0.75rem 0.5rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid rgba(228, 226, 220, 0.6);
            transition: color 0.2s, background 0.2s;
        }

        .mobile-link:hover {
            color: var(--color-primary);
            background: rgba(14, 124, 107, 0.03);
        }

        .mobile-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-cta {
            margin-top: 1rem;
            text-align: center;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
            .btn-nav {
                display: inline-flex;
            }
            .menu-toggle {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.65rem 1.5rem;
            border-radius: var(--radius-full);
            font-size: 0.9375rem;
            font-weight: 600;
            transition: all 0.25s;
            border: 2px solid transparent;
            line-height: 1.4;
            white-space: nowrap;
        }

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

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

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(14, 124, 107, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-accent {
            background: var(--color-accent);
            color: #1F2933;
            border-color: var(--color-accent);
        }

        .btn-accent:hover {
            background: #f0af54;
            border-color: #f0af54;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 161, 59, 0.3);
        }

        .btn-accent:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-ghost {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

        .btn-ghost:hover {
            background: rgba(14, 124, 107, 0.08);
            transform: translateY(-2px);
        }

        .btn-ghost-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 0.9rem 2.2rem;
            font-size: 1rem;
        }

        .btn-sm {
            padding: 0.4rem 1rem;
            font-size: 0.8125rem;
        }

        @media (max-width: 520px) {
            .btn-lg {
                padding: 0.8rem 1.6rem;
                font-size: 0.9375rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background-size: cover;
            background-position: center;
            color: #fff;
            overflow: hidden;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(11, 37, 34, 0.92) 30%, rgba(14, 124, 107, 0.7) 80%, rgba(233, 161, 59, 0.25) 100%);
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            gap: 3rem;
            padding-top: 5rem;
            padding-bottom: 4rem;
        }

        @media (min-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1.15fr 0.85fr;
                align-items: center;
                padding-top: 0;
                padding-bottom: 0;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(14, 124, 107, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 0.35rem 1rem;
            border-radius: var(--radius-full);
            font-size: 0.8125rem;
            color: #E9F2EF;
            letter-spacing: 0.02em;
            margin-bottom: 1.5rem;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--color-accent);
            border-radius: 50%;
            display: inline-block;
        }

        .hero h1 {
            font-size: clamp(2rem, 5vw, 3.25rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }

        .hero h1 .highlight {
            position: relative;
            color: var(--color-accent);
            display: inline-block;
        }

        .hero-sub {
            font-size: 1.125rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin-bottom: 2rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .hero-visual {
            position: relative;
            display: none;
        }

        @media (min-width: 1024px) {
            .hero-visual {
                display: block;
            }
        }

        .hero-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            transform: perspective(1000px) rotateY(-6deg) rotateX(2deg);
            transition: transform 0.4s;
        }

        .hero-card:hover {
            transform: perspective(1000px) rotateY(-2deg) rotateX(0deg);
        }

        .hero-card img {
            width: 100%;
            height: 350px;
            object-fit: cover;
        }

        .hero-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(11, 37, 34, 0.6));
        }

        .float-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--color-dark);
            font-size: 0.8125rem;
            font-weight: 600;
            padding: 0.4rem 0.9rem;
            border-radius: var(--radius-full);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .hero-metrics {
            position: relative;
            z-index: 2;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            background: rgba(11, 37, 34, 0.3);
        }

        .metrics-inner {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1rem;
            padding-top: 1.75rem;
            padding-bottom: 1.75rem;
        }

        .metric {
            text-align: center;
            border-right: 1px solid rgba(255, 255, 255, 0.1);
            padding: 0 1rem;
        }

        .metric:last-child {
            border-right: none;
        }

        .metric strong {
            display: block;
            font-size: 1.375rem;
            font-weight: 700;
            color: #fff;
        }

        .metric span {
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 0.15rem;
            display: block;
        }

        @media (max-width: 640px) {
            .hero {
                min-height: auto;
                padding: 3rem 0 0;
            }
            .hero-inner {
                padding-top: 3rem;
                padding-bottom: 2.5rem;
                text-align: center;
            }
            .hero-sub {
                margin-left: auto;
                margin-right: auto;
            }
            .hero-actions {
                justify-content: center;
            }
            .metrics-inner {
                grid-template-columns: repeat(3, 1fr);
                padding: 1.25rem 0;
            }
            .metric strong {
                font-size: 1.125rem;
            }
        }

        /* ===== 通用板块 ===== */
        .section-padding {
            padding-top: 6rem;
            padding-bottom: 6rem;
        }

        @media (max-width: 640px) {
            .section-padding {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            color: var(--color-dark);
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        .section-sub {
            font-size: 1rem;
            color: var(--color-text-light);
            max-width: 640px;
            line-height: 1.7;
        }

        /* ===== 平台理念 ===== */
        .philosophy {
            background: var(--color-light);
            padding-top: 6rem;
            padding-bottom: 6rem;
        }

        @media (max-width: 640px) {
            .philosophy {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .philosophy-grid {
            display: grid;
            gap: 3rem;
        }

        @media (min-width: 1024px) {
            .philosophy-grid {
                grid-template-columns: 1fr 1fr;
                gap: 4rem;
            }
        }

        .philosophy-left h2 {
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 1.2rem;
            color: var(--color-dark);
        }

        .philosophy-left p {
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }

        .philosophy-img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            object-fit: cover;
            width: 100%;
            height: 220px;
        }

        .philosophy-right {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .feature-item {
            display: flex;
            gap: 1.25rem;
            padding: 1.5rem 1.75rem;
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }

        .feature-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--color-accent);
            transform: translateX(4px);
        }

        .feature-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(14, 124, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
        }

        .feature-item h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 0.3rem;
        }

        .feature-item p {
            font-size: 0.875rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        @media (max-width: 640px) {
            .feature-item {
                padding: 1.1rem 1.2rem;
                flex-direction: column;
                gap: 0.75rem;
            }
        }

        /* ===== 资讯区 ===== */
        .news-section {
            padding-top: 6rem;
            padding-bottom: 6rem;
            background: #fff;
        }

        @media (max-width: 640px) {
            .news-section {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .news-header {
            margin-bottom: 2.5rem;
        }

        .news-grid {
            display: grid;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        .news-card {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--color-accent);
            transform: translateY(-4px);
        }

        .news-card-link {
            display: block;
            height: 100%;
        }

        .news-thumb {
            position: relative;
            height: 180px;
            overflow: hidden;
            background: var(--color-light);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }

        .news-card:hover .news-thumb img {
            transform: scale(1.03);
        }

        .news-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(14, 124, 107, 0.92);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.02em;
        }

        .news-info {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .news-info h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--color-dark);
            line-height: 1.4;
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s;
        }

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

        .news-info p {
            font-size: 0.875rem;
            color: var(--color-text-light);
            line-height: 1.6;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            margin-bottom: 0.75rem;
        }

        .news-date {
            font-size: 0.8125rem;
            color: #9AA5B1;
        }

        .news-empty {
            grid-column: 1 / -1;
            border: 2px dashed var(--color-border);
            border-radius: var(--radius-md);
            padding: 4rem 2rem;
            text-align: center;
            color: var(--color-text-light);
            background: var(--color-light);
        }

        .news-empty .empty-icon {
            display: block;
            font-size: 2.5rem;
            color: var(--color-primary);
            margin-bottom: 0.75rem;
            animation: floatY 2s ease-in-out infinite;
        }

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

        /* ===== 平台优势 ===== */
        .advantages {
            background: var(--color-light);
            padding-top: 6rem;
            padding-bottom: 6rem;
        }

        @media (max-width: 640px) {
            .advantages {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .advantage-list {
            display: flex;
            flex-direction: column;
            margin-top: 2.5rem;
        }

        .advantage-row {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            padding: 1.5rem 0.75rem;
            border-bottom: 1px solid var(--color-border);
            transition: background 0.25s, padding-left 0.25s;
        }

        .advantage-row:first-child {
            border-top: 1px solid var(--color-border);
        }

        .advantage-row:hover {
            background: rgba(255, 255, 255, 0.7);
            padding-left: 1.25rem;
        }

        .adv-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(14, 124, 107, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
        }

        .advantage-row h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 0.2rem;
        }

        .advantage-row p {
            font-size: 0.875rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        .advantage-banner {
            margin-top: 2.5rem;
            background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
            border-radius: var(--radius-md);
            padding: 1.25rem 2rem;
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.75rem;
            box-shadow: var(--shadow-sm);
        }

        .advantage-banner::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background: var(--color-accent);
            color: var(--color-dark);
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.875rem;
            flex-shrink: 0;
        }

        @media (max-width: 640px) {
            .advantage-row {
                flex-direction: column;
                gap: 0.75rem;
                padding: 1.25rem 0.5rem;
            }
            .advantage-banner {
                padding: 1rem 1.25rem;
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 路径/流程 ===== */
        .path-section {
            background: #fff;
            padding-top: 6rem;
            padding-bottom: 6rem;
            overflow: hidden;
            position: relative;
        }

        @media (max-width: 640px) {
            .path-section {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .path-steps {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            margin-top: 3rem;
            position: relative;
        }

        @media (min-width: 768px) {
            .path-steps {
                flex-direction: row;
                align-items: stretch;
                justify-content: center;
                gap: 1rem;
            }
        }

        .path-step {
            flex: 1;
            background: var(--color-light);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 2rem 1.75rem;
            position: relative;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            text-align: center;
        }

        .path-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            opacity: 0.25;
            display: block;
            margin-bottom: 0.75rem;
            line-height: 1;
        }

        .path-step h3 {
            font-size: 1.125rem;
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 0.5rem;
        }

        .path-step p {
            font-size: 0.875rem;
            color: var(--color-text-light);
            line-height: 1.6;
        }

        .path-arrow {
            display: none;
            align-self: center;
            font-size: 1.5rem;
            color: var(--color-accent);
            font-weight: 700;
            padding: 0 0.25rem;
        }

        @media (min-width: 768px) {
            .path-arrow {
                display: block;
            }
        }

        /* ===== 数据面板 ===== */
        .data-panel {
            background: var(--color-dark);
            padding-top: 5rem;
            padding-bottom: 5rem;
            position: relative;
            overflow: hidden;
        }

        .data-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-primary));
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
            text-align: center;
        }

        @media (min-width: 768px) {
            .data-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .data-item {
            padding: 1rem;
        }

        .data-value {
            display: block;
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 0.5rem;
        }

        .data-label {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.02em;
        }

        .data-value em {
            font-style: normal;
            color: var(--color-accent);
        }

        @media (max-width: 520px) {
            .data-value {
                font-size: 1.5rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--color-light);
            padding-top: 6rem;
            padding-bottom: 6rem;
        }

        @media (max-width: 640px) {
            .faq-section {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        .faq-list {
            margin-top: 2.5rem;
            max-width: 800px;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            background: transparent;
            transition: background 0.25s;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-item.open {
            background: rgba(255, 255, 255, 0.6);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            padding: 1.1rem 0.5rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-dark);
            text-align: left;
            transition: color 0.2s;
            min-height: 48px;
        }

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

        .faq-icon {
            position: relative;
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform 0.3s;
        }

        .faq-icon::before {
            width: 2px;
            height: 20px;
            left: 9px;
            top: 0;
        }

        .faq-icon::after {
            width: 20px;
            height: 2px;
            top: 9px;
            left: 0;
        }

        .faq-item.open .faq-icon::before {
            transform: rotate(90deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding-left: 0.5rem;
            padding-right: 0.5rem;
        }

        .faq-answer p {
            padding-bottom: 1.25rem;
            font-size: 0.9375rem;
            color: var(--color-text-light);
            line-height: 1.7;
            border-left: 3px solid var(--color-primary);
            padding-left: 1rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--color-dark);
            padding-top: 5rem;
            padding-bottom: 5rem;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: rgba(14, 124, 107, 0.2);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 120px;
            height: 120px;
            background: rgba(233, 161, 59, 0.15);
            border-radius: 50%;
        }

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

        .cta-inner h2 {
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
        }

        .cta-inner p {
            font-size: 1.0625rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 2rem;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-dark);
            color: #C8D6D2;
            padding-top: 4rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-grid {
            display: grid;
            gap: 2.5rem;
            padding-bottom: 3rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 1.4fr 1fr 1fr;
                gap: 3rem;
            }
        }

        .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 0.75rem;
        }

        .footer-logo span {
            color: var(--color-accent);
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: #9AA5B1;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-nav h4,
        .footer-contact h4 {
            font-size: 0.9375rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .footer-nav a {
            display: block;
            padding: 0.3rem 0;
            font-size: 0.875rem;
            color: #9AA5B1;
            transition: color 0.2s;
        }

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

        .footer-contact span {
            display: block;
            font-size: 0.875rem;
            color: #9AA5B1;
            padding: 0.25rem 0;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.25rem 0;
            font-size: 0.8125rem;
            color: #7A8B86;
            text-align: center;
        }

        .footer-copy .container {
            display: flex;
            flex-direction: column;
            gap: 0.25rem;
            align-items: center;
        }

        @media (min-width: 768px) {
            .footer-copy .container {
                flex-direction: row;
                justify-content: space-between;
            }
        }

        /* ===== 辅助 ===== */
        .text-primary {
            color: var(--color-primary) !important;
        }
        .text-accent {
            color: var(--color-accent) !important;
        }
        .bg-lightbg {
            background: var(--color-light) !important;
        }
        .bg-darkbg {
            background: var(--color-dark) !important;
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 1024px) {
            .nav-inner {
                height: 64px;
            }
            .logo-text {
                font-size: 1.0625rem;
            }
            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 1rem;
                border-radius: 8px;
            }
        }

        @media (max-width: 768px) {
            .philosophy-grid {
                gap: 2rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .topbar {
                height: 32px;
            }
            .topbar-domain {
                font-size: 0.75rem;
            }
            .topbar-link {
                font-size: 0.75rem;
            }
            .logo-text {
                font-size: 0.9375rem;
            }
            .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 0.875rem;
            }
            .news-thumb {
                height: 150px;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #0E7C6B;
            --color-primary-dark: #0A5E52;
            --color-accent: #E9A13B;
            --color-deep: #0B2522;
            --color-bg-soft: #F6F5F1;
            --color-text: #1F2933;
            --color-text-muted: #5B6B7A;
            --color-border: #E4E2DC;
            --radius-sm: 0.75rem;
            --radius-lg: 1rem;
            --shadow-card: 0 1px 3px rgba(11,37,34,0.06), 0 4px 12px rgba(11,37,34,0.05);
            --shadow-hover: 0 8px 24px rgba(11,37,34,0.10);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: #ffffff;
            color: var(--color-text);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .top-info {
            background: var(--color-deep);
            color: #c8d6d2;
            font-size: 0.875rem;
            height: 36px;
            display: flex;
            align-items: center;
        }

        .top-info .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .top-info .domain {
            color: #88B0A6;
            font-weight: 500;
        }

        .top-info .slogan {
            display: none;
            letter-spacing: 0.02em;
        }

        @media (min-width: 768px) {
            .top-info .slogan {
                display: block;
            }
        }

        .top-info .actions {
            display: flex;
            gap: 1.25rem;
            align-items: center;
        }

        .top-info .actions a {
            color: #c8d6d2;
            font-size: 0.875rem;
            transition: color 0.2s ease;
        }

        .top-info .actions a:hover {
            color: var(--color-accent);
        }

        .main-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow 0.3s ease;
        }

        .main-header.scrolled {
            box-shadow: 0 4px 20px rgba(11, 37, 34, 0.08);
        }

        .main-header .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo-text {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.375rem;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .logo-text .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 800;
            box-shadow: 0 4px 10px rgba(14, 124, 107, 0.2);
        }

        .main-nav {
            display: none;
            align-items: center;
            gap: 2rem;
        }

        @media (min-width: 1024px) {
            .main-nav {
                display: flex;
            }
        }

        .nav-link {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            padding: 0.25rem 0;
            position: relative;
            transition: color 0.2s ease;
        }

        .nav-link:after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--color-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.25s ease;
        }

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

        .nav-link:hover:after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .nav-link.active:after {
            transform: scaleX(1);
        }

        .nav-cta {
            display: none;
            background: var(--color-accent);
            color: var(--color-deep);
            font-weight: 700;
            font-size: 0.9375rem;
            padding: 0.5rem 1.5rem;
            border-radius: 9999px;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(233, 161, 59, 0.3);
        }

        @media (min-width: 1024px) {
            .nav-cta {
                display: inline-block;
            }
        }

        .nav-cta:hover {
            background: #F0B24F;
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(233, 161, 59, 0.4);
            color: var(--color-deep);
        }

        .nav-toggle {
            display: flex;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .nav-toggle span {
            width: 24px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

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

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

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

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--color-border);
            padding: 1rem 0;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .mobile-menu .mobile-link {
            font-size: 1rem;
            padding: 0.5rem 0;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text);
        }

        .mobile-menu .mobile-link:last-child {
            border-bottom: none;
        }

        .mobile-menu .mobile-cta {
            margin-top: 0.5rem;
            text-align: center;
            background: var(--color-accent);
            color: var(--color-deep);
            font-weight: 700;
            padding: 0.75rem 1rem;
            border-radius: 9999px;
        }

        /* Article Layout */
        .article-hero {
            background: var(--color-bg-soft);
            padding: 3.5rem 0 2.5rem;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }

        .article-hero:before {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(14, 124, 107, 0.06);
        }

        .article-hero .breadcrumb {
            font-size: 0.875rem;
            color: var(--color-text-muted);
            margin-bottom: 1.25rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
        }

        .article-hero .breadcrumb a {
            color: var(--color-text-muted);
            transition: color 0.2s ease;
        }

        .article-hero .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .article-hero .breadcrumb .sep {
            color: #b0b8bd;
        }

        .article-title {
            font-size: clamp(1.5rem, 3.5vw, 2.25rem);
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            max-width: 900px;
            margin-bottom: 1rem;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.25rem;
            font-size: 0.875rem;
            color: var(--color-text-muted);
            align-items: center;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        .article-meta .meta-item i {
            font-size: 0.8125rem;
            color: var(--color-primary);
        }

        .article-meta .category-badge {
            background: rgba(14, 124, 107, 0.12);
            color: var(--color-primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.75rem;
            border-radius: 9999px;
            letter-spacing: 0.02em;
        }

        .article-body-wrap {
            padding: 3.5rem 0 4rem;
        }

        .article-content {
            max-width: 720px;
            margin: 0 auto;
            font-size: 1rem;
            line-height: 1.8;
            color: var(--color-text);
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-top: 2.25rem;
            margin-bottom: 1rem;
            color: var(--color-text);
            line-height: 1.4;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            margin-top: 1.75rem;
            margin-bottom: 0.75rem;
            color: var(--color-text);
        }

        .article-content p {
            margin-bottom: 1.25rem;
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: var(--color-bg-soft);
            padding: 1rem 1.25rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-muted);
            font-style: normal;
        }

        .article-content ul,
        .article-content ol {
            margin: 1rem 0 1.25rem 1.5rem;
        }

        .article-content li {
            margin-bottom: 0.5rem;
        }

        .article-content img {
            border-radius: var(--radius-lg);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-content a {
            color: var(--color-primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(14, 124, 107, 0.3);
        }

        .article-content a:hover {
            color: var(--color-accent);
            border-bottom-color: var(--color-accent);
        }

        .article-not-found {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 4rem 1rem;
            border: 2px dashed var(--color-border);
            border-radius: var(--radius-lg);
        }

        .article-not-found .not-found-icon {
            font-size: 3rem;
            color: var(--color-accent);
            margin-bottom: 1rem;
        }

        .article-not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .article-not-found p {
            color: var(--color-text-muted);
            margin-bottom: 1.5rem;
        }

        .btn-primary {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-deep);
            font-weight: 700;
            font-size: 0.9375rem;
            padding: 0.75rem 1.75rem;
            border-radius: 9999px;
            transition: all 0.25s ease;
            box-shadow: 0 2px 8px rgba(233, 161, 59, 0.25);
            border: none;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary:hover {
            background: #F0B24F;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(233, 161, 59, 0.35);
            color: var(--color-deep);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(233, 161, 59, 0.25);
        }

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

        .btn-outline {
            display: inline-block;
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.75rem 1.75rem;
            border-radius: 9999px;
            transition: all 0.25s ease;
            cursor: pointer;
            text-align: center;
        }

        .btn-outline:hover {
            background: rgba(14, 124, 107, 0.08);
            transform: translateY(-2px);
            color: var(--color-primary-dark);
        }

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

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

        .article-tags {
            max-width: 720px;
            margin: 2.5rem auto 0;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            align-items: center;
            justify-content: center;
        }

        .article-tags .tag-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--color-text-muted);
            margin-right: 0.25rem;
        }

        .article-tags .tag {
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            color: var(--color-text-muted);
            font-size: 0.8125rem;
            padding: 0.3rem 0.875rem;
            border-radius: 9999px;
            transition: all 0.2s ease;
        }

        .article-tags .tag:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .article-nav {
            max-width: 720px;
            margin: 2rem auto 0;
            display: flex;
            justify-content: center;
            padding-top: 2rem;
            border-top: 1px solid var(--color-border);
        }

        /* Related Section */
        .related-section {
            background: var(--color-bg-soft);
            padding: 4rem 0;
            border-top: 1px solid var(--color-border);
        }

        .related-section .section-head {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .related-section .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.5rem;
        }

        .related-section .section-head p {
            color: var(--color-text-muted);
            font-size: 0.9375rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: all 0.3s ease;
            border: 1px solid var(--color-border);
        }

        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(233, 161, 59, 0.4);
        }

        .related-card .thumb {
            height: 140px;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .related-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .related-card:hover .thumb img {
            transform: scale(1.03);
        }

        .related-card .related-body {
            padding: 1.25rem;
        }

        .related-card .related-body h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0.5rem;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .related-body .date {
            font-size: 0.8125rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-deep);
            padding: 4.5rem 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section:before {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            opacity: 0.2;
        }

        .cta-section h2 {
            font-size: clamp(1.75rem, 4vw, 2.5rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
        }

        .cta-section p {
            color: #c8d6d2;
            max-width: 560px;
            margin: 0 auto 2rem;
            font-size: 1rem;
        }

        .cta-section .btn-primary {
            font-size: 1rem;
            padding: 0.875rem 2.5rem;
        }

        /* FAQ Section */
        .faq-section {
            padding: 4rem 0;
            background: #fff;
        }

        .faq-section .section-head {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        .faq-section .section-head h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 0.5rem;
        }

        .faq-section .section-head p {
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.125rem 0;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            gap: 1rem;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--color-bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1rem;
            color: var(--color-primary);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-icon {
            transform: rotate(135deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            font-size: 0.9375rem;
            line-height: 1.75;
            color: var(--color-text-muted);
            padding-left: 1rem;
        }

        .faq-answer-inner {
            padding-bottom: 1.125rem;
        }

        /* Footer */
        .site-footer {
            background: var(--color-deep);
            color: #c8d6d2;
            padding-top: 3rem;
            position: relative;
        }

        .site-footer:before {
            content: "";
            display: block;
            height: 3px;
            width: 60px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            position: absolute;
            top: 0;
            left: 0;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            padding-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 2fr 1fr 1.5fr;
                gap: 2rem;
            }
        }

        .footer-brand .footer-logo {
            font-weight: 800;
            font-size: 1.375rem;
            color: #fff;
            margin-bottom: 0.75rem;
            display: inline-block;
        }

        .footer-brand .footer-logo span {
            color: var(--color-accent);
        }

        .footer-brand p {
            color: #c8d6d2;
            font-size: 0.9375rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-nav h4,
        .footer-contact h4 {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer-nav {
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
        }

        .footer-nav a {
            color: #c8d6d2;
            font-size: 0.9375rem;
            transition: color 0.2s ease;
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 0.625rem;
        }

        .footer-contact span {
            font-size: 0.9375rem;
            color: #c8d6d2;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.25rem 0;
        }

        .footer-copy .container {
            display: flex;
            flex-direction: column;
            gap: 0.375rem;
            justify-content: space-between;
            align-items: center;
            text-align: center;
        }

        @media (min-width: 768px) {
            .footer-copy .container {
                flex-direction: row;
                text-align: left;
            }
        }

        .footer-copy span {
            font-size: 0.8125rem;
            color: #8ba19b;
        }

        /* Focus visible accessibility */
        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        @media (max-width: 640px) {
            .article-hero {
                padding: 2.5rem 0 1.5rem;
            }

            .article-title {
                font-size: 1.375rem;
            }

            .article-meta {
                gap: 0.75rem;
                font-size: 0.8125rem;
            }

            .article-body-wrap {
                padding: 2.5rem 0 3rem;
            }

            .container {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0E7C6B;
            --primary-dark: #0A5F52;
            --accent: #E9A13B;
            --accent-light: #F4B860;
            --dark-bg: #0B2522;
            --light-bg: #F6F5F1;
            --text: #1F2933;
            --text-secondary: #5B6B7A;
            --border: #E4E2DC;
            --radius-sm: 0.75rem;
            --radius-md: 1rem;
            --shadow: 0 1px 3px rgba(11, 37, 34, 0.06), 0 4px 12px rgba(11, 37, 34, 0.05);
            --shadow-hover: 0 8px 24px rgba(11, 37, 34, 0.1);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text);
            background: #fff;
            line-height: 1.75;
            font-size: 1rem;
        }

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

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

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1.25rem;
            }
        }

        /* ===== 顶部信息条 ===== */
        .top-info {
            background: var(--dark-bg);
            color: #C8D6D2;
            font-size: 0.875rem;
            height: 36px;
            display: flex;
            align-items: center;
        }

        .top-info .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
        }

        .top-info .domain-text {
            color: #E9A13B;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .top-info .slogan-text {
            color: #9FB4AE;
            text-align: center;
            flex: 1;
        }

        .top-info .top-actions {
            display: flex;
            gap: 1rem;
        }

        .top-info .top-actions a {
            color: #C8D6D2;
            transition: color 0.25s;
            font-size: 0.813rem;
        }

        .top-info .top-actions a:hover {
            color: var(--accent);
        }

        @media (max-width: 640px) {
            .top-info .slogan-text {
                display: none;
            }

            .top-info .container {
                justify-content: space-between;
            }
        }

        /* ===== 主导航 ===== */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s;
        }

        .main-header.scrolled {
            box-shadow: 0 6px 20px rgba(11, 37, 34, 0.08);
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--dark-bg);
            letter-spacing: 0.01em;
        }

        .logo-mark {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            flex-shrink: 0;
            box-shadow: 0 4px 10px rgba(14, 124, 107, 0.3);
        }

        .logo-text {
            display: flex;
            align-items: baseline;
            gap: 2px;
        }

        .logo-text strong {
            color: var(--primary);
        }

        .logo-text span {
            font-weight: 700;
            color: var(--dark-bg);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-link {
            display: inline-block;
            padding: 0.5rem 1rem;
            font-size: 0.938rem;
            font-weight: 500;
            color: var(--text);
            border-radius: 9999px;
            transition: background 0.25s, color 0.25s;
            position: relative;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 1rem;
            right: 1rem;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(14, 124, 107, 0.06);
        }

        .nav-link:hover::after {
            transform: scaleX(1);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(14, 124, 107, 0.08);
        }

        .nav-link.active::after {
            transform: scaleX(1);
        }

        .nav-cta {
            margin-left: 1rem;
            background: var(--accent);
            color: var(--dark-bg);
            font-weight: 600;
            padding: 0.55rem 1.4rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(233, 161, 59, 0.35);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(233, 161, 59, 0.4);
        }

        .nav-cta:active {
            transform: translateY(0);
        }

        .nav-cta:focus-visible,
        .btn-primary:focus-visible,
        .btn-outline:focus-visible,
        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .burger {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--dark-bg);
            cursor: pointer;
            padding: 0.4rem;
            border-radius: 0.5rem;
        }

        .burger:hover {
            background: rgba(14, 124, 107, 0.06);
        }

        @media (max-width: 1024px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                padding: 1rem 1.25rem 1.5rem;
                gap: 0.25rem;
                box-shadow: 0 16px 32px rgba(11, 37, 34, 0.08);
            }

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

            .nav-link {
                width: 100%;
                padding: 0.75rem 1rem;
                border-radius: 0.5rem;
            }

            .nav-link::after {
                display: none;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 0.75rem;
                width: 100%;
                text-align: center;
            }

            .burger {
                display: block;
            }

            .logo {
                font-size: 1.1rem;
            }
        }

        /* ===== 页面Hero ===== */
        .page-hero {
            background: var(--light-bg);
            position: relative;
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
            padding: 3.5rem 0;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: -10%;
            width: 420px;
            height: 420px;
            background: linear-gradient(135deg, rgba(14, 124, 107, 0.12), rgba(233, 161, 59, 0.08));
            clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 40%;
            width: 200px;
            height: 200px;
            background-image: radial-gradient(rgba(14, 124, 107, 0.18) 1px, transparent 1px);
            background-size: 14px 14px;
            pointer-events: none;
        }

        .page-hero .container {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(14, 124, 107, 0.1);
            color: var(--primary);
            font-size: 0.813rem;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 9999px;
            margin-bottom: 1rem;
        }

        .page-hero h1 {
            font-size: clamp(1.9rem, 4vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--dark-bg);
            margin-bottom: 1rem;
        }

        .page-hero h1 span {
            color: var(--primary);
            position: relative;
        }

        .page-hero p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--accent);
            color: var(--dark-bg);
            font-weight: 600;
            padding: 0.8rem 1.9rem;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            font-size: 0.938rem;
            transition: all 0.3s;
            box-shadow: 0 4px 12px rgba(233, 161, 59, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 161, 59, 0.4);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            font-weight: 600;
            padding: 0.7rem 1.7rem;
            border-radius: 9999px;
            cursor: pointer;
            font-size: 0.938rem;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            background: rgba(14, 124, 107, 0.08);
            transform: translateY(-2px);
        }

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

        .page-hero .hero-image {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            aspect-ratio: 4/3;
            background: linear-gradient(135deg, #E8F0ED, #F6F1E8);
        }

        .page-hero .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .page-hero .hero-image:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 2.5rem 0;
                min-height: auto;
            }

            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 2rem;
                text-align: center;
            }

            .page-hero p {
                margin-left: auto;
                margin-right: auto;
            }

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

            .page-hero .hero-image {
                max-width: 480px;
                margin: 0 auto;
            }
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: 5.5rem 0;
        }

        .section-light {
            background: var(--light-bg);
        }

        .section-white {
            background: #fff;
        }

        .section-dark {
            background: var(--dark-bg);
            color: #fff;
        }

        .section-header {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            color: var(--dark-bg);
            line-height: 1.35;
            margin-bottom: 0.75rem;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
        }

        .section-dark .section-header h2 {
            color: #fff;
        }

        .section-dark .section-header p {
            color: #9FB4AE;
        }

        /* ===== 入口方式卡片 ===== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .entry-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s;
        }

        .entry-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
            transform: translateY(-4px);
        }

        .entry-card:hover::before {
            transform: scaleX(1);
        }

        .entry-icon {
            width: 52px;
            height: 52px;
            background: rgba(14, 124, 107, 0.1);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--primary);
            margin-bottom: 1rem;
            transition: all 0.3s;
        }

        .entry-card:hover .entry-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .entry-card h3 {
            font-size: 1.125rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--dark-bg);
        }

        .entry-card p {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        @media (max-width: 1024px) {
            .entry-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

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

        /* ===== 图文介绍 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
        }

        .intro-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
            aspect-ratio: 4/3;
        }

        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .intro-image::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 30%;
            background: linear-gradient(transparent, rgba(11, 37, 34, 0.25));
            pointer-events: none;
        }

        .intro-content .tag {
            display: inline-block;
            background: rgba(14, 124, 107, 0.1);
            color: var(--primary);
            font-size: 0.813rem;
            font-weight: 600;
            padding: 0.25rem 0.9rem;
            border-radius: 9999px;
            margin-bottom: 1rem;
        }

        .intro-content h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--dark-bg);
            line-height: 1.35;
            margin-bottom: 1rem;
        }

        .intro-content p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }

        .intro-points {
            margin-top: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .intro-point {
            display: flex;
            align-items: flex-start;
            gap: 0.75rem;
        }

        .intro-point i {
            color: var(--primary);
            font-size: 1.1rem;
            margin-top: 0.2rem;
            flex-shrink: 0;
        }

        .intro-point span {
            font-size: 0.938rem;
            color: var(--text);
        }

        @media (max-width: 768px) {
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .intro-image {
                order: -1;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps-wrap {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }

        .steps-wrap::before {
            content: '';
            position: absolute;
            top: 32px;
            left: 40px;
            right: 40px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0.25;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            position: relative;
        }

        .step-item {
            text-align: center;
            padding: 0 0.5rem;
        }

        .step-num {
            width: 64px;
            height: 64px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            font-weight: 700;
            margin: 0 auto 1rem;
            box-shadow: 0 4px 16px rgba(14, 124, 107, 0.3);
            position: relative;
            z-index: 2;
        }

        .step-item:nth-child(2) .step-num {
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(233, 161, 59, 0.3);
        }

        .step-item:nth-child(3) .step-num {
            background: #3E8C7D;
        }

        .step-item:nth-child(4) .step-num {
            background: var(--dark-bg);
        }

        .step-item h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--dark-bg);
            margin-bottom: 0.4rem;
        }

        .step-item p {
            font-size: 0.813rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        @media (max-width: 768px) {
            .steps-wrap::before {
                display: none;
            }

            .steps-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem 1rem;
            }
        }

        @media (max-width: 480px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 适用场景 ===== */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.2rem;
            max-width: 860px;
            margin: 0 auto;
        }

        .scenario-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 1.2rem 1.4rem;
            transition: all 0.3s;
        }

        .scenario-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateX(4px);
        }

        .scenario-item i {
            font-size: 1.3rem;
            color: var(--primary);
            background: rgba(14, 124, 107, 0.1);
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .scenario-item .scenario-text h4 {
            font-size: 0.938rem;
            font-weight: 600;
            color: var(--dark-bg);
            margin-bottom: 0.2rem;
        }

        .scenario-item .scenario-text p {
            font-size: 0.813rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

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

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            background: var(--light-bg);
            border-radius: var(--radius-md);
            padding: 1.5rem 2rem;
        }

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

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem 0;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: color 0.25s;
        }

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

        .faq-question .faq-icon {
            font-size: 1.1rem;
            color: var(--primary);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 1rem;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-secondary);
            font-size: 0.938rem;
            line-height: 1.7;
            padding-left: 1rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
            padding: 4.5rem 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(14, 124, 107, 0.25);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -40px;
            left: 30%;
            width: 160px;
            height: 160px;
            background-image: radial-gradient(rgba(233, 161, 59, 0.25) 1.5px, transparent 1.5px);
            background-size: 16px 16px;
            pointer-events: none;
        }

        .cta-content {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.75rem;
            line-height: 1.35;
        }

        .cta-content p {
            color: #9FB4AE;
            font-size: 1rem;
            margin-bottom: 1.8rem;
        }

        .cta-content .btn-primary {
            font-size: 1rem;
            padding: 0.9rem 2.2rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark-bg);
            color: #C8D6D2;
            padding-top: 4rem;
        }

        .site-footer::before {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            width: 60px;
            margin-bottom: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 3rem;
            padding-bottom: 3rem;
        }

        .footer-brand .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.4rem;
            margin-bottom: 0.75rem;
        }

        .footer-brand .footer-logo span {
            color: var(--accent);
        }

        .footer-brand p {
            font-size: 0.875rem;
            color: #9FB4AE;
            line-height: 1.7;
            max-width: 340px;
        }

        .footer-nav h4,
        .footer-contact h4 {
            font-size: 0.938rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1rem;
        }

        .footer-nav a {
            display: block;
            color: #9FB4AE;
            font-size: 0.875rem;
            padding: 0.35rem 0;
            transition: color 0.25s, padding-left 0.25s;
        }

        .footer-nav a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact span {
            display: block;
            color: #9FB4AE;
            font-size: 0.875rem;
            padding: 0.35rem 0;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
        }

        .footer-copy .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        .footer-copy span {
            font-size: 0.813rem;
            color: #7A928C;
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-copy .container {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 动画 ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(24px);
            animation: fadeUp 0.7s ease forwards;
        }

        @keyframes fadeUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0E7C6B;
            --primary-dark: #0A5F52;
            --accent: #E9A13B;
            --accent-light: #F5C16C;
            --dark: #0B2522;
            --light: #F6F5F1;
            --text: #1F2933;
            --muted: #5B6B7A;
            --border: #E4E2DC;
            --radius-sm: 0.75rem;
            --radius-lg: 1rem;
            --shadow-sm: 0 1px 3px rgba(11, 37, 34, 0.06), 0 4px 12px rgba(11, 37, 34, 0.05);
            --shadow-hover: 0 8px 24px rgba(11, 37, 34, 0.1);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            background: #ffffff;
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 2rem;
            padding-right: 2rem;
        }
        @media (max-width: 640px) {
            .container {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }
        }

        /* ===== Topbar ===== */
        .topbar {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
            height: 36px;
            font-size: 0.8125rem;
            display: flex;
            align-items: center;
        }
        .topbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .topbar-domain {
            font-family: Inter, Arial, sans-serif;
            letter-spacing: 0.02em;
        }
        .topbar-tip {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.75rem;
        }
        .topbar-actions a {
            color: rgba(255, 255, 255, 0.9);
            margin-left: 1rem;
            font-size: 0.8125rem;
            transition: color 0.2s;
        }
        .topbar-actions a:hover {
            color: var(--accent);
        }
        @media (max-width: 768px) {
            .topbar-tip {
                display: none;
            }
        }

        /* ===== Main Nav ===== */
        .main-nav-wrap {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s;
        }
        .main-nav-wrap.scrolled {
            box-shadow: 0 6px 20px rgba(11, 37, 34, 0.08);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--dark);
            letter-spacing: -0.01em;
        }
        .brand-logo .logo-badge {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            box-shadow: 0 4px 10px rgba(14, 124, 107, 0.25);
        }
        .brand-logo .logo-text span {
            color: var(--accent);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }
        .nav-link {
            padding: 0.5rem 1rem;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text);
            border-radius: 9999px;
            position: relative;
            transition: color 0.2s, background 0.2s;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(14, 124, 107, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 1rem;
            right: 1rem;
            height: 2px;
            border-radius: 2px;
            background: var(--accent);
        }
        .nav-cta {
            margin-left: 0.75rem;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: var(--accent);
            color: var(--dark);
            font-weight: 700;
            font-size: 0.9375rem;
            padding: 0.6rem 1.5rem;
            border-radius: 9999px;
            transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
            box-shadow: 0 4px 12px rgba(233, 161, 59, 0.3);
        }
        .btn-primary:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(233, 161, 59, 0.35);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.55rem 1.5rem;
            border-radius: 9999px;
            transition: background 0.2s, transform 0.2s;
        }
        .btn-outline:hover {
            background: rgba(14, 124, 107, 0.08);
            transform: translateY(-1px);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            width: 24px;
            height: 2px;
            background: var(--dark);
            border-radius: 2px;
            transition: transform 0.3s, opacity 0.3s;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--border);
            padding: 0.5rem 1.25rem 1rem;
        }
        .mobile-menu a {
            display: block;
            padding: 0.85rem 0.5rem;
            font-size: 1rem;
            color: var(--text);
            border-bottom: 1px solid #f0efec;
            font-weight: 500;
        }
        .mobile-menu a:hover {
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 700;
        }
        @media (max-width: 1024px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.open {
                display: block;
            }
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 320px;
            display: flex;
            align-items: center;
            background-color: var(--light);
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(11, 37, 34, 0.88) 0%, rgba(11, 37, 34, 0.55) 55%, rgba(14, 124, 107, 0.25) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 30px solid rgba(233, 161, 59, 0.15);
            z-index: 1;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
            padding-top: 3rem;
            padding-bottom: 3rem;
        }
        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 1.25rem;
        }
        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-breadcrumb a:hover {
            color: var(--accent);
        }
        .hero-breadcrumb i {
            font-size: 0.625rem;
        }
        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.01em;
            margin-bottom: 0.75rem;
        }
        .page-hero h1 span {
            color: var(--accent);
        }
        .page-hero p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.0625rem;
            max-width: 560px;
            margin-bottom: 1.75rem;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: var(--dark);
            padding: 0.9rem 2rem;
        }
        .hero-actions .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-weight: 600;
            font-size: 0.9375rem;
            padding: 0.85rem 2rem;
            border-radius: 9999px;
            transition: background 0.2s, border-color 0.2s;
        }
        .hero-actions .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }
        @media (max-width: 640px) {
            .page-hero {
                min-height: auto;
                padding: 3rem 0;
            }
            .page-hero h1 {
                font-size: 1.75rem;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-hero-outline {
                width: 100%;
                justify-content: center;
                padding: 0.8rem 1rem;
            }
        }

        /* ===== Section Common ===== */
        .section {
            padding-top: 5rem;
            padding-bottom: 5rem;
        }
        .section-alt {
            background: var(--light);
        }
        .section-label {
            display: inline-block;
            font-size: 0.8125rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(14, 124, 107, 0.08);
            padding: 0.35rem 1rem;
            border-radius: 9999px;
            margin-bottom: 1rem;
        }
        .section h2 {
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 1rem;
        }
        .section .section-desc {
            color: var(--muted);
            font-size: 1.0625rem;
            max-width: 680px;
            line-height: 1.8;
        }
        @media (max-width: 768px) {
            .section {
                padding-top: 3.5rem;
                padding-bottom: 3.5rem;
            }
        }

        /* ===== Download Channel ===== */
        .channel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        .channel-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            position: relative;
        }
        .channel-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .channel-media::after {
            content: "";
            position: absolute;
            inset: 0;
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-lg);
            pointer-events: none;
        }
        .channel-features {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            margin-top: 1.5rem;
        }
        .channel-feature {
            display: flex;
            gap: 0.85rem;
            align-items: flex-start;
        }
        .channel-feature .feat-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(14, 124, 107, 0.1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            flex-shrink: 0;
        }
        .channel-feature strong {
            display: block;
            font-size: 0.9375rem;
            color: var(--dark);
            margin-bottom: 0.2rem;
        }
        .channel-feature span {
            font-size: 0.875rem;
            color: var(--muted);
            line-height: 1.6;
        }
        @media (max-width: 960px) {
            .channel-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2.5rem;
        }
        .step-card {
            position: relative;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
        }
        .step-num {
            font-family: Inter, Arial, sans-serif;
            font-size: 2.25rem;
            font-weight: 800;
            color: rgba(14, 124, 107, 0.15);
            line-height: 1;
            margin-bottom: 0.75rem;
            transition: color 0.3s;
        }
        .step-card:hover .step-num {
            color: var(--accent);
        }
        .step-card h3 {
            font-size: 1.0625rem;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 0.5rem;
        }
        .step-card p {
            font-size: 0.875rem;
            color: var(--muted);
            line-height: 1.65;
        }
        @media (max-width: 960px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Download Items ===== */
        .download-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin-top: 2.5rem;
        }
        .download-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 1.25rem 1.5rem;
            transition: box-shadow 0.2s, border-color 0.2s, transform 0.2s;
        }
        .download-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .download-item .item-index {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(14, 124, 107, 0.1);
            color: var(--primary);
            font-weight: 700;
            font-size: 0.875rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-family: Inter, Arial, sans-serif;
        }
        .download-item .item-info {
            flex: 1;
        }
        .download-item .item-info strong {
            display: block;
            font-size: 0.9375rem;
            color: var(--dark);
            margin-bottom: 0.15rem;
        }
        .download-item .item-info span {
            font-size: 0.8125rem;
            color: var(--muted);
            line-height: 1.5;
        }
        .download-item .item-link {
            color: var(--primary);
            font-size: 0.8125rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .download-item .item-link i {
            font-size: 0.75rem;
            margin-left: 0.25rem;
            transition: transform 0.2s;
        }
        .download-item:hover .item-link i {
            transform: translateX(3px);
        }
        @media (max-width: 768px) {
            .download-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== Feature Split ===== */
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 4rem;
            align-items: center;
        }
        .split-text p {
            color: var(--muted);
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .split-media img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            width: 100%;
        }
        .split-points {
            margin-top: 1.5rem;
            display: grid;
            gap: 0.75rem;
        }
        .split-point {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-size: 0.9375rem;
            color: var(--dark);
        }
        .split-point i {
            color: var(--primary);
            font-size: 0.875rem;
        }
        @media (max-width: 900px) {
            .split-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 800px;
            margin: 2rem auto 0;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            background: transparent;
            transition: background 0.3s;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            padding: 1.25rem 0.5rem;
            font-size: 1rem;
            font-weight: 500;
            color: var(--dark);
            text-align: left;
            cursor: pointer;
            transition: color 0.2s;
            background: transparent;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            border: 2px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            color: var(--muted);
            transition: transform 0.3s, background 0.3s, color 0.3s, border-color 0.3s;
            flex-shrink: 0;
        }
        .faq-question.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s;
            padding-left: 0.5rem;
            padding-right: 0.5rem;
            color: var(--muted);
            font-size: 0.9375rem;
            line-height: 1.75;
        }
        .faq-answer.open {
            max-height: 300px;
            padding-bottom: 1.25rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--dark);
            position: relative;
            overflow: hidden;
            padding: 5rem 0;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            left: 10%;
            bottom: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 40px solid rgba(14, 124, 107, 0.2);
        }
        .cta-section::after {
            content: "";
            position: absolute;
            right: 8%;
            top: -40px;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: rgba(233, 161, 59, 0.1);
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.5rem, 3vw, 2.125rem);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            margin-bottom: 2rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-inner .btn-primary {
            font-size: 1rem;
            padding: 0.95rem 2.5rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #C8D6D2;
            padding-top: 4rem;
        }
        .footer-top-line {
            height: 2px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            width: 60px;
            margin-bottom: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 3rem;
            padding-bottom: 3rem;
        }
        .footer-logo {
            color: #fff;
            font-weight: 800;
            font-size: 1.25rem;
        }
        .footer-logo span {
            color: var(--accent);
        }
        .footer-brand p {
            font-size: 0.875rem;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            margin-top: 0.75rem;
            max-width: 320px;
        }
        .footer-nav h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 0.9375rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-nav a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.875rem;
            padding: 0.3rem 0;
            transition: color 0.2s;
        }
        .footer-nav a:hover {
            color: var(--accent);
        }
        .footer-contact span {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.875rem;
            padding: 0.3rem 0;
        }
        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.5rem 0;
            font-size: 0.8125rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-copy .container {
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
        }
        @media (max-width: 860px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 520px) {
            .footer-copy .container {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ===== Reveal animation ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category3 */
:root {
            --primary: #0E7C6B;
            --primary-dark: #0A5F52;
            --primary-light: #E6F4F2;
            --accent: #E9A13B;
            --accent-hover: #F0B45A;
            --dark: #0B2522;
            --light: #F6F5F1;
            --text: #1F2933;
            --text-muted: #5B6B7A;
            --border: #E4E2DC;
            --radius-sm: 0.75rem;
            --radius-md: 1rem;
            --radius-lg: 1.25rem;
            --shadow-sm: 0 1px 3px rgba(11,37,34,0.06), 0 4px 12px rgba(11,37,34,0.05);
            --shadow-hover: 0 8px 24px rgba(11,37,34,0.1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text);
            background: #fff;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 2rem;
            padding-right: 2rem;
        }

        /* ===== Topbar ===== */
        .topbar {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.8rem;
            height: 36px;
            display: flex;
            align-items: center;
        }

        .topbar-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .topbar-domain {
            color: rgba(255, 255, 255, 0.5);
            letter-spacing: 0.03em;
        }

        .topbar-tip {
            color: rgba(255, 255, 255, 0.6);
        }

        .topbar-actions {
            display: flex;
            gap: 1.25rem;
        }

        .topbar-link {
            color: rgba(255, 255, 255, 0.8);
            transition: color 0.2s;
        }

        .topbar-link:hover {
            color: var(--accent);
        }

        /* ===== Main Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow 0.3s;
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(11, 37, 34, 0.08);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            gap: 2rem;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .logo-text {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
        }

        .logo-text span {
            display: block;
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--primary);
            letter-spacing: 0.06em;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 0.5rem 0.9rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            border-radius: 9999px;
            transition: color 0.2s, background 0.2s;
            position: relative;
            white-space: nowrap;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: width 0.25s;
        }

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

        .nav-link:hover::after {
            width: 60%;
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: var(--primary-light);
        }

        .nav-link.active::after {
            width: 60%;
        }

        .btn-nav {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.55rem 1.4rem;
            background: var(--accent);
            color: #1F2933;
            font-weight: 600;
            font-size: 0.9rem;
            border-radius: 9999px;
            transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
            flex-shrink: 0;
        }

        .btn-nav:hover {
            background: var(--accent-hover);
            box-shadow: 0 4px 14px rgba(233, 161, 59, 0.35);
            transform: translateY(-1px);
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }

        .hamburger span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: 0.3s;
        }

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 0.5rem 0 1rem;
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu a {
            display: block;
            padding: 0.8rem 1.5rem;
            font-size: 0.95rem;
            color: var(--text);
            border-bottom: 1px solid rgba(228, 226, 220, 0.5);
            transition: background 0.2s, color 0.2s;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            background: var(--primary-light);
            color: var(--primary);
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.9rem 2rem;
            background: var(--accent);
            color: #1F2933;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            border-radius: 9999px;
            cursor: pointer;
            transition: background 0.2s, box-shadow 0.2s, transform 0.2s;
        }

        .btn-primary:hover {
            background: var(--accent-hover);
            box-shadow: 0 6px 18px rgba(233, 161, 59, 0.4);
            transform: translateY(-2px);
        }

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

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.85rem 1.8rem;
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1.5px solid var(--primary);
            border-radius: 9999px;
            cursor: pointer;
            transition: background 0.2s, color 0.2s, transform 0.2s;
        }

        .btn-outline:hover {
            background: rgba(14, 124, 107, 0.08);
            transform: translateY(-2px);
        }

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

        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--light) 0%, #ffffff 40%, #E8F2F0 100%);
            padding: 4.5rem 0 3.5rem;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(14, 124, 107, 0.15) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: 15%;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(233, 161, 59, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 3rem;
            position: relative;
            z-index: 2;
        }

        .page-hero-content {
            max-width: 640px;
        }

        .page-hero-badge {
            display: inline-block;
            padding: 0.3rem 1rem;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 9999px;
            letter-spacing: 0.04em;
            margin-bottom: 1.25rem;
        }

        .page-hero h1 {
            font-size: clamp(1.9rem, 4vw, 2.65rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 1rem;
        }

        .page-hero h1 .accent-text {
            color: var(--primary);
        }

        .page-hero-desc {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.75;
            margin-bottom: 1.75rem;
        }

        .page-hero-cta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .page-hero-visual {
            flex-shrink: 0;
            width: 340px;
            height: 260px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 4px solid #fff;
            position: relative;
        }

        .page-hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .page-hero-visual:hover img {
            transform: scale(1.04);
        }

        /* ===== Intro Section ===== */
        .intro-section {
            padding: 5rem 0;
            background: #fff;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }

        .section-title {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 1.5rem;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }

        .intro-text p {
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 1.25rem;
            font-size: 0.98rem;
            color: rgba(31, 41, 51, 0.9);
        }

        .intro-text p:last-child {
            margin-bottom: 0;
        }

        .intro-img-wrap {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .intro-img-wrap img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.5s;
        }

        .intro-img-wrap:hover img {
            transform: scale(1.02);
        }

        .intro-img-badge {
            position: absolute;
            bottom: 1rem;
            left: 1rem;
            background: rgba(11, 37, 34, 0.82);
            color: #fff;
            font-size: 0.85rem;
            padding: 0.4rem 1rem;
            border-radius: 9999px;
            backdrop-filter: blur(4px);
        }

        /* ===== List Section ===== */
        .list-section {
            padding: 5rem 0;
            background: var(--light);
        }

        .list-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 2.5rem;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .list-header .section-title {
            margin-bottom: 0;
        }

        .list-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        .guide-item {
            display: flex;
            align-items: flex-start;
            gap: 1.25rem;
            padding: 1.5rem;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: box-shadow 0.25s, border-color 0.25s, transform 0.25s;
        }

        .guide-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .guide-num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(14, 124, 107, 0.25);
            line-height: 1;
            min-width: 44px;
            font-family: 'Inter', Arial, sans-serif;
        }

        .guide-content {
            flex: 1;
        }

        .guide-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 0.4rem;
            transition: color 0.2s;
        }

        .guide-item:hover .guide-content h3 {
            color: var(--primary);
        }

        .guide-content p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 0.6rem;
        }

        .guide-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--primary);
            transition: gap 0.2s;
        }

        .guide-link:hover {
            gap: 0.6rem;
        }

        /* ===== Tags Section ===== */
        .tags-section {
            padding: 4.5rem 0;
            background: #fff;
        }

        .tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
            margin-top: 1.5rem;
        }

        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.25rem;
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: 9999px;
            font-size: 0.88rem;
            color: var(--text);
            transition: background 0.2s, border-color 0.2s, color 0.2s;
        }

        .tag-chip:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        .tag-chip .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 5rem 0;
            background: var(--light);
        }

        .faq-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

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

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.1rem 0;
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color 0.2s;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            position: relative;
            transition: transform 0.3s;
        }

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

        .faq-icon::before {
            width: 12px;
            height: 2px;
            top: 11px;
            left: 6px;
        }

        .faq-icon::after {
            width: 2px;
            height: 12px;
            top: 6px;
            left: 11px;
            transition: transform 0.3s;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding-left: 0;
        }

        .faq-answer p {
            font-size: 0.93rem;
            color: var(--text-muted);
            line-height: 1.7;
            padding-bottom: 1.25rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: var(--dark);
            padding: 4.5rem 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 30px solid rgba(14, 124, 107, 0.2);
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: clamp(1.6rem, 3vw, 2.25rem);
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            margin-bottom: 2rem;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-inner .btn-primary {
            font-size: 1rem;
            padding: 1rem 2.4rem;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: #C8D6D2;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 3rem;
            padding-top: 3.5rem;
            padding-bottom: 3rem;
        }

        .footer-brand .footer-logo {
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            display: block;
            margin-bottom: 0.75rem;
        }

        .footer-brand .footer-logo span {
            color: var(--accent);
            font-weight: 400;
            font-size: 0.9rem;
        }

        .footer-brand p {
            color: rgba(200, 214, 210, 0.7);
            line-height: 1.7;
            font-size: 0.9rem;
        }

        .footer-nav h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-nav a {
            display: block;
            color: rgba(200, 214, 210, 0.7);
            padding: 0.25rem 0;
            transition: color 0.2s;
        }

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

        .footer-contact span {
            display: block;
            color: rgba(200, 214, 210, 0.7);
            padding: 0.25rem 0;
            line-height: 1.6;
        }

        .footer-copy {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 1.25rem 0;
        }

        .footer-copy .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .footer-copy span {
            font-size: 0.82rem;
            color: rgba(200, 214, 210, 0.5);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .container {
                padding-left: 1.25rem;
                padding-right: 1.25rem;
            }

            .main-nav {
                padding: 0 1.25rem;
            }

            .nav-links {
                display: none;
            }

            .btn-nav {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .page-hero-inner {
                flex-direction: column;
                text-align: center;
            }

            .page-hero-cta {
                justify-content: center;
            }

            .page-hero-visual {
                width: 100%;
                max-width: 420px;
                height: 220px;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 640px) {
            .topbar-tip {
                display: none;
            }

            .topbar-actions {
                gap: 0.8rem;
            }

            .page-hero {
                padding: 3rem 0 2.5rem;
            }

            .page-hero h1 {
                font-size: 1.7rem;
            }

            .page-hero-desc {
                font-size: 0.95rem;
            }

            .page-hero-cta {
                flex-direction: column;
                align-items: center;
            }

            .list-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .guide-item {
                padding: 1.25rem;
            }

            .guide-num {
                font-size: 1.5rem;
                min-width: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }

            .footer-copy .container {
                flex-direction: column;
                text-align: center;
            }

            .intro-img-wrap img {
                height: 240px;
            }

            .tags-wrap {
                gap: 0.5rem;
            }

            .tag-chip {
                padding: 0.4rem 0.9rem;
                font-size: 0.82rem;
            }
        }