/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --c-primary: #b8860b;
            --c-primary-light: #daa520;
            --c-primary-dark: #8b6914;
            --c-secondary: #2c1810;
            --c-secondary-light: #4a2c1a;
            --c-bg: #faf6f0;
            --c-bg-alt: #f0e8d8;
            --c-bg-card: #fffcf5;
            --c-text: #2c1810;
            --c-text-light: #6b5a4a;
            --c-text-lighter: #a09080;
            --c-border: #dcc8b0;
            --c-border-light: #e8dcc8;
            --c-white: #ffffff;
            --c-shadow: rgba(44, 24, 16, 0.08);
            --c-shadow-hover: rgba(44, 24, 16, 0.16);
            --c-overlay: rgba(44, 24, 16, 0.55);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px var(--c-shadow);
            --shadow-md: 0 6px 24px var(--c-shadow);
            --shadow-lg: 0 12px 40px var(--c-shadow-hover);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            --max-w: 1200px;
            --header-h: 72px;
            --space-section: 80px;
        }

        /* ========== Reset ========== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--c-text);
            background: var(--c-bg);
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: color var(--transition); }
        button, input, textarea { font-family: inherit; font-size: inherit; border: none; outline: none; }
        button { cursor: pointer; background: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--c-text); }
        h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
        h2 { font-size: clamp(1.5rem, 2.8vw, 2.2rem); }
        h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
        p { margin-bottom: 1em; }
        p:last-child { margin-bottom: 0; }

        /* ========== 容器 ========== */
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container { padding: 0 16px; }
        }

        /* ========== 通用组件 ========== */
        .section { padding: var(--space-section) 0; }
        .section-alt { background: var(--c-bg-alt); }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--c-primary), var(--c-primary-light));
            border-radius: 2px;
            margin: 12px auto 0;
        }
        .section-title p {
            color: var(--c-text-light);
            font-size: 1.05rem;
            margin-top: 12px;
            max-width: 640px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
            color: var(--c-white);
            box-shadow: 0 4px 16px rgba(184, 134, 11, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(184, 134, 11, 0.45);
        }
        .btn-primary:active { transform: translateY(0); }
        .btn-outline {
            background: transparent;
            color: var(--c-primary);
            border-color: var(--c-primary);
        }
        .btn-outline:hover {
            background: var(--c-primary);
            color: var(--c-white);
        }
        .btn-white {
            background: var(--c-white);
            color: var(--c-secondary);
            box-shadow: var(--shadow-sm);
        }
        .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--c-bg-alt);
            color: var(--c-text-light);
            border: 1px solid var(--c-border-light);
        }
        .badge-primary {
            background: rgba(184, 134, 11, 0.12);
            color: var(--c-primary);
            border-color: rgba(184, 134, 11, 0.25);
        }

        .card {
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--c-border);
        }

        .tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 4px;
            font-size: 0.78rem;
            font-weight: 500;
            background: var(--c-bg-alt);
            color: var(--c-text-light);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
        }
        .tag:hover {
            background: var(--c-primary);
            color: var(--c-white);
            border-color: var(--c-primary);
        }

        /* ========== 头部导航 ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--c-border-light);
            height: var(--header-h);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--c-secondary);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header-logo i {
            font-size: 1.6rem;
            color: var(--c-primary);
        }
        .header-logo span {
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-nav a {
            padding: 6px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--c-text-light);
            transition: all var(--transition);
            position: relative;
        }
        .header-nav a:hover {
            color: var(--c-primary);
            background: rgba(184, 134, 11, 0.06);
        }
        .header-nav a.active {
            color: var(--c-primary);
            background: rgba(184, 134, 11, 0.1);
            font-weight: 600;
        }
        .header-nav a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--c-primary);
            border-radius: 1px;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--c-bg);
            border-radius: 24px;
            padding: 0 16px;
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--c-primary);
            box-shadow: 0 0 0 3px rgba(184, 134, 11, 0.1);
        }
        .header-search input {
            background: transparent;
            padding: 8px 8px 8px 0;
            width: 140px;
            font-size: 0.85rem;
            color: var(--c-text);
        }
        .header-search input::placeholder { color: var(--c-text-lighter); }
        .header-search button {
            color: var(--c-text-lighter);
            font-size: 0.9rem;
            padding: 4px;
            transition: color var(--transition);
        }
        .header-search button:hover { color: var(--c-primary); }

        .header-cta {
            padding: 8px 20px;
            border-radius: 24px;
            background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
            color: var(--c-white);
            font-weight: 600;
            font-size: 0.88rem;
            box-shadow: 0 4px 12px rgba(184, 134, 11, 0.3);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(184, 134, 11, 0.4);
        }

        .menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--c-text);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            background: var(--c-bg);
            border: 1px solid var(--c-border-light);
            cursor: pointer;
        }
        .menu-toggle:hover { background: var(--c-bg-alt); }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            overflow: hidden;
            background-color: var(--c-secondary);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            filter: brightness(0.45) saturate(0.7);
            transform: scale(1.05);
            transition: transform 0.8s ease;
        }
        .hero:hover .hero-bg { transform: scale(1.02); }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(44,24,16,0.7) 0%, rgba(44,24,16,0.3) 50%, rgba(44,24,16,0.8) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 780px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 20px;
            border-radius: 24px;
            background: rgba(218, 165, 32, 0.2);
            border: 1px solid rgba(218, 165, 32, 0.3);
            color: var(--c-primary-light);
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero h1 {
            color: var(--c-white);
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0,0,0,0.3);
        }
        .hero h1 em {
            font-style: normal;
            background: linear-gradient(135deg, var(--c-primary-light), #f0d080);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            color: rgba(255,255,255,0.8);
            font-size: 1.15rem;
            line-height: 1.8;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ========== 核心说明 ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            background: var(--c-bg-alt);
        }
        .intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .intro-image:hover img { transform: scale(1.03); }
        .intro-text h2 { margin-bottom: 20px; }
        .intro-text h2 em {
            font-style: normal;
            color: var(--c-primary);
        }
        .intro-text p {
            color: var(--c-text-light);
            font-size: 1.02rem;
            margin-bottom: 16px;
        }
        .intro-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
            margin-top: 24px;
        }
        .intro-features li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--c-text);
            padding: 8px 12px;
            background: var(--c-bg);
            border-radius: var(--radius-sm);
            border: 1px solid var(--c-border-light);
        }
        .intro-features li i {
            color: var(--c-primary);
            font-size: 1rem;
            flex-shrink: 0;
        }

        /* ========== 版本特色卡片 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            padding: 36px 28px;
            text-align: center;
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--c-border);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 1.6rem;
            color: var(--c-primary);
            background: rgba(184, 134, 11, 0.1);
            transition: all var(--transition);
        }
        .feature-card:hover .icon {
            background: var(--c-primary);
            color: var(--c-white);
            transform: scale(1.05) rotate(-4deg);
        }
        .feature-card h3 { margin-bottom: 12px; font-size: 1.15rem; }
        .feature-card p { color: var(--c-text-light); font-size: 0.92rem; }

        /* ========== 经典版本卡片 ========== */
        .classic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .classic-card {
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--c-bg-card);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
        }
        .classic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .classic-card .cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--c-bg-alt);
        }
        .classic-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .classic-card:hover .cover img { transform: scale(1.05); }
        .classic-card .body {
            padding: 20px 24px 24px;
        }
        .classic-card .body .badge { margin-bottom: 10px; }
        .classic-card .body h3 { margin-bottom: 8px; font-size: 1.1rem; }
        .classic-card .body p {
            color: var(--c-text-light);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .classic-card .body .meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--c-text-lighter);
        }
        .classic-card .body .meta i { margin-right: 4px; }

        /* ========== 数据统计 ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--c-border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }
        .stat-card .num {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--c-primary);
            line-height: 1.2;
        }
        .stat-card .num span { font-size: 1.2rem; }
        .stat-card .label {
            font-size: 0.92rem;
            color: var(--c-text-light);
            margin-top: 8px;
        }

        /* ========== 最新资讯列表 ========== */
        .posts-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .post-item {
            display: flex;
            align-items: stretch;
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--c-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .post-item:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-sm);
            border-color: var(--c-border);
        }
        .post-item .thumb {
            width: 200px;
            min-height: 140px;
            flex-shrink: 0;
            background: var(--c-bg-alt);
            overflow: hidden;
        }
        .post-item .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .post-item:hover .thumb img { transform: scale(1.05); }
        .post-item .info {
            padding: 18px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .post-item .info .meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--c-text-lighter);
            margin-bottom: 8px;
        }
        .post-item .info .meta .badge { font-size: 0.72rem; }
        .post-item .info h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            transition: color var(--transition);
        }
        .post-item:hover .info h3 { color: var(--c-primary); }
        .post-item .info p {
            font-size: 0.9rem;
            color: var(--c-text-light);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-empty {
            text-align: center;
            padding: 48px 24px;
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            border: 1px dashed var(--c-border);
            color: var(--c-text-lighter);
        }
        .post-empty i { font-size: 2rem; margin-bottom: 12px; display: block; }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--c-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--c-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--c-border); }
        .faq-q {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            gap: 16px;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-q:hover { background: rgba(184, 134, 11, 0.03); }
        .faq-q i {
            color: var(--c-primary);
            font-size: 1.1rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-q i { transform: rotate(180deg); }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--c-text-light);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--c-secondary), var(--c-secondary-light));
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }
        .cta-section .container { position: relative; z-index: 1; }
        .cta-section h2 {
            color: var(--c-white);
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.7);
            font-size: 1.05rem;
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-white { font-size: 1rem; padding: 14px 40px; }

        /* ========== 页脚 ========== */
        .footer {
            background: var(--c-secondary);
            color: rgba(255,255,255,0.7);
            padding: 48px 0 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand .header-logo { color: var(--c-white); margin-bottom: 12px; }
        .footer-brand p { font-size: 0.9rem; line-height: 1.8; max-width: 300px; }
        .footer h4 {
            color: var(--c-white);
            font-size: 0.95rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer ul li { margin-bottom: 8px; }
        .footer ul a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition);
        }
        .footer ul a:hover { color: var(--c-primary-light); }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--c-primary-light); }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .features-grid, .classic-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            :root { --header-h: 64px; --space-section: 56px; }

            .menu-toggle { display: block; }

            .header-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--c-white);
                flex-direction: column;
                padding: 16px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--c-border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.4s ease;
                pointer-events: none;
                z-index: 99;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .header-nav a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .header-nav a.active::after { display: none; }

            .header-search { display: none; }
            .header-actions .header-cta { padding: 6px 16px; font-size: 0.82rem; }

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

            .features-grid, .classic-grid { grid-template-columns: 1fr; }

            .post-item { flex-direction: column; }
            .post-item .thumb { width: 100%; height: 180px; }

            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }

            .hero { min-height: 70vh; }
            .hero h1 { font-size: clamp(1.8rem, 6vw, 2.4rem); }
            .hero p { font-size: 1rem; }
        }

        @media (max-width: 520px) {
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-card { padding: 20px 12px; }
            .stat-card .num { font-size: 1.8rem; }
            .section-title { margin-bottom: 32px; }
            .faq-q { padding: 14px 16px; font-size: 0.92rem; }
            .faq-a { font-size: 0.88rem; }
        }

        /* ========== 可访问性 ========== */
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 2px solid var(--c-primary);
            outline-offset: 2px;
        }

        /* ========== 滚动动画 ========== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #C0783E;
            --primary-dark: #9E5F2E;
            --primary-light: #E8C9A8;
            --secondary: #3D2B1F;
            --accent: #D9A87E;
            --bg: #F7F3EE;
            --bg-alt: #EFE8E0;
            --bg-card: #FFFFFF;
            --text: #2C2C2C;
            --text-weak: #7A7068;
            --text-light: #B0A89E;
            --border: #E5DDD5;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-xs);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.25;
            font-weight: 600;
            color: var(--secondary);
        }

        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 导航 ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
        }

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .header-logo i {
            color: var(--primary);
            font-size: 1.6rem;
        }
        .header-logo:hover {
            color: var(--primary-dark);
        }
        .header-logo span {
            background: linear-gradient(135deg, var(--secondary), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-nav a {
            position: relative;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-weak);
            transition: background var(--transition), color var(--transition);
        }
        .header-nav a:hover {
            background: var(--bg-alt);
            color: var(--secondary);
        }
        .header-nav a.active {
            background: var(--primary);
            color: #fff;
        }
        .header-nav a.active:hover {
            background: var(--primary-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg-alt);
            border-radius: 40px;
            padding: 0 16px;
            height: 42px;
            border: 1px solid transparent;
            transition: border var(--transition), background var(--transition);
            min-width: 200px;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            background: #fff;
        }
        .header-search i {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-right: 8px;
        }
        .header-search input {
            background: transparent;
            border: none;
            height: 100%;
            width: 100%;
            font-size: 0.9rem;
            color: var(--text);
        }
        .header-search input::placeholder {
            color: var(--text-light);
        }

        .header-cta {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }
        .header-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(192, 120, 62, 0.30);
            color: #fff;
        }

        /* 移动端菜单按钮 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--secondary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Hero ===== */
        .hero {
            margin-top: var(--nav-height);
            min-height: 520px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            isolation: isolate;
            padding: 80px 0 60px;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(61, 43, 31, 0.75) 0%, rgba(192, 120, 62, 0.55) 100%);
            z-index: 1;
        }
        .hero .container {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 800px;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.20);
            letter-spacing: -0.5px;
        }
        .hero p {
            font-size: 1.2rem;
            opacity: 0.92;
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
            text-shadow: 0 1px 8px rgba(0, 0, 0, 0.15);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.18);
            backdrop-filter: blur(6px);
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.20);
        }
        .hero-badge i {
            color: #FFD700;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: #fff;
            color: var(--secondary);
            padding: 14px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
            color: var(--secondary);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: #fff;
            padding: 14px 34px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.50);
            transition: background var(--transition), border var(--transition), transform var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            transform: translateY(-3px);
            color: #fff;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-title {
            text-align: center;
            margin-bottom: 16px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .section-title p {
            color: var(--text-weak);
            max-width: 620px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-divider {
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 4px;
            margin: 20px auto 32px;
        }

        /* ===== 介绍板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-grid img {
            width: 100%;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            object-fit: cover;
            min-height: 300px;
        }
        .intro-content h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
            color: var(--secondary);
        }
        .intro-content p {
            color: var(--text-weak);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .intro-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 500;
        }
        .tag i {
            font-size: 0.75rem;
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform var(--transition), box-shadow var(--transition);
            border: 1px solid var(--border);
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .card-body p {
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-top: 12px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }
        .card-meta i {
            margin-right: 4px;
        }
        .card-badge {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 40px;
            font-weight: 500;
            margin-bottom: 10px;
        }

        /* ===== 特点展示 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .feature-item {
            text-align: center;
            background: var(--bg-card);
            padding: 36px 20px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .feature-icon {
            width: 68px;
            height: 68px;
            margin: 0 auto 18px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: background var(--transition), color var(--transition);
        }
        .feature-item:hover .feature-icon {
            background: var(--primary);
            color: #fff;
        }
        .feature-item h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
            color: var(--secondary);
        }
        .feature-item p {
            color: var(--text-weak);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 40px;
            counter-reset: step;
        }
        .step {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step::before {
            counter-increment: step;
            content: counter(step);
            position: absolute;
            top: 18px;
            right: 22px;
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary-light);
            line-height: 1;
            opacity: 0.6;
        }
        .step h4 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--secondary);
        }
        .step p {
            color: var(--text-weak);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .step-icon {
            width: 48px;
            height: 48px;
            background: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            margin-bottom: 16px;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }
        .stat-item {
            text-align: center;
            background: var(--bg-card);
            padding: 32px 16px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            color: var(--text-weak);
            font-size: 0.95rem;
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 32px auto 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            background: none;
            text-align: left;
            gap: 16px;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: var(--bg-alt);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-weak);
            line-height: 1.7;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--primary-dark) 100%);
            padding: 80px 0;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-section .btn-primary {
            background: #fff;
            color: var(--secondary);
        }
        .cta-section .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
            color: var(--secondary);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 32px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .header-logo {
            color: #fff;
            margin-bottom: 12px;
            display: inline-flex;
        }
        .footer-brand .header-logo span {
            background: linear-gradient(135deg, #fff, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.7;
            max-width: 360px;
        }
        .footer h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer ul li {
            margin-bottom: 8px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.10);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            opacity: 0.65;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .hero {
                min-height: 400px;
                padding: 60px 0 40px;
            }

            .header-search {
                display: none;
            }
            .header-cta {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .header-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                width: 100%;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform 0.4s ease, opacity 0.4s ease;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
                gap: 4px;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header-nav a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1rem;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .intro-grid img {
                min-height: 220px;
            }

            .card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .card-img {
                height: 160px;
            }

            .steps {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .features-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .feature-item {
                padding: 24px 16px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-number {
                font-size: 2.2rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .section {
                padding: 56px 0;
            }
            .cta-section {
                padding: 56px 0;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .btn-primary,
            .btn-outline-light {
                width: 100%;
                justify-content: center;
                max-width: 280px;
            }
            .header-logo span {
                font-size: 1.1rem;
            }
            .header-logo i {
                font-size: 1.3rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --clr-primary: #8D6B4A;
            --clr-primary-dark: #6F4F33;
            --clr-primary-light: #B8967A;
            --clr-accent: #B85C3A;
            --clr-accent-dark: #9A4A2E;
            --clr-green: #4A7B5C;
            --clr-green-dark: #3A6348;
            --clr-bg: #F5F0E8;
            --clr-bg-card: #FDFBF7;
            --clr-bg-dark: #EDE6DA;
            --clr-text: #3D2E1E;
            --clr-text-light: #7A6B5A;
            --clr-text-lighter: #A99A8A;
            --clr-border: #D4C9B8;
            --clr-border-light: #E5DDD0;
            --clr-white: #FFFFFF;
            --clr-shadow: rgba(61, 46, 30, 0.08);
            --clr-shadow-hover: rgba(61, 46, 30, 0.15);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px var(--clr-shadow);
            --shadow-md: 0 4px 20px var(--clr-shadow);
            --shadow-lg: 0 8px 40px var(--clr-shadow);
            --shadow-hover: 0 8px 32px var(--clr-shadow-hover);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: system-ui, -apple-system, 'Segoe UI', Roboto, 'Noto Sans', 'Helvetica Neue', sans-serif;
            --font-serif: 'Georgia', 'Times New Roman', serif;
            --spacing-section: 4rem;
            --spacing-section-mobile: 2.5rem;
            --container-max: 1200px;
            --container-narrow: 820px;
            --header-height: 70px;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text);
            background-color: var(--clr-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-md);
        }

        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--clr-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-serif);
            font-weight: 700;
            line-height: 1.3;
            color: var(--clr-text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .container-narrow {
            max-width: var(--container-narrow);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== 标题通用 ===== */
        .section-title {
            font-size: 2rem;
            text-align: center;
            margin-bottom: 0.5rem;
            letter-spacing: 1px;
        }
        .section-sub {
            text-align: center;
            color: var(--clr-text-light);
            font-size: 1.05rem;
            margin-bottom: 2.5rem;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-divider {
            width: 60px;
            height: 3px;
            background: var(--clr-accent);
            border-radius: 2px;
            margin: 0.75rem auto 2rem;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            .section-sub {
                font-size: 0.95rem;
                margin-bottom: 1.8rem;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--clr-bg-card);
            border-bottom: 1px solid var(--clr-border-light);
            box-shadow: 0 1px 4px var(--clr-shadow);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--clr-text);
            transition: opacity var(--transition);
        }
        .header-logo i {
            color: var(--clr-accent);
            font-size: 1.5rem;
        }
        .header-logo:hover {
            opacity: 0.8;
            color: var(--clr-text);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .header-nav a {
            display: inline-block;
            padding: 6px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text-light);
            transition: background var(--transition), color var(--transition);
            position: relative;
        }
        .header-nav a:hover {
            background: var(--clr-bg);
            color: var(--clr-primary);
        }
        .header-nav a.active {
            color: var(--clr-white);
            background: var(--clr-primary);
        }
        .header-nav a.active:hover {
            background: var(--clr-primary-dark);
            color: var(--clr-white);
        }

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

        .header-search {
            display: flex;
            align-items: center;
            background: var(--clr-bg);
            border: 1px solid var(--clr-border-light);
            border-radius: 30px;
            padding: 0 16px;
            height: 38px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .header-search:focus-within {
            border-color: var(--clr-primary-light);
            box-shadow: 0 0 0 3px rgba(141, 107, 74, 0.12);
        }
        .header-search input {
            background: transparent;
            border: none;
            padding: 0 8px;
            font-size: 0.9rem;
            color: var(--clr-text);
            min-width: 140px;
        }
        .header-search input::placeholder {
            color: var(--clr-text-lighter);
        }
        .header-search button {
            color: var(--clr-text-light);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .header-search button:hover {
            color: var(--clr-accent);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--clr-accent);
            color: var(--clr-white);
            padding: 8px 22px;
            border-radius: 30px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            box-shadow: 0 2px 8px rgba(184, 92, 58, 0.25);
        }
        .header-cta:hover {
            background: var(--clr-accent-dark);
            color: var(--clr-white);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(184, 92, 58, 0.35);
        }
        .header-cta:focus-visible {
            outline: 2px solid var(--clr-accent);
            outline-offset: 2px;
        }

        /* 移动端汉堡 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--clr-text);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }

        @media (max-width: 820px) {
            .header-nav {
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--clr-bg-card);
                flex-direction: column;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--clr-border-light);
                box-shadow: var(--shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.35s ease, opacity 0.35s ease;
                z-index: 999;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .header-nav a {
                padding: 10px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .menu-toggle {
                display: flex;
            }
            .header-search input {
                min-width: 100px;
                width: 100px;
            }
            .header-cta {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .header-logo span {
                font-size: 1.1rem;
            }
            .header-search input {
                min-width: 70px;
                width: 70px;
                font-size: 0.8rem;
            }
            .header-cta {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .header-cta span {
                display: none;
            }
        }

        /* ===== 文章 Hero ===== */
        .article-hero {
            position: relative;
            padding: 3.5rem 0 2.5rem;
            background: var(--clr-bg-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            background-color: rgba(245, 240, 232, 0.88);
            border-bottom: 1px solid var(--clr-border-light);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(245, 240, 232, 0.3), rgba(245, 240, 232, 0.85));
            pointer-events: none;
        }
        .article-hero .container-narrow {
            position: relative;
            z-index: 1;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--clr-text-light);
            margin-bottom: 1.2rem;
            flex-wrap: wrap;
        }
        .article-breadcrumb a {
            color: var(--clr-text-light);
        }
        .article-breadcrumb a:hover {
            color: var(--clr-primary);
        }
        .article-breadcrumb .sep {
            color: var(--clr-text-lighter);
        }
        .article-breadcrumb .current {
            color: var(--clr-primary);
            font-weight: 500;
        }

        .article-hero .article-category {
            display: inline-block;
            background: var(--clr-accent);
            color: var(--clr-white);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 30px;
            letter-spacing: 0.5px;
            margin-bottom: 1rem;
        }

        .article-hero h1 {
            font-size: 2.2rem;
            line-height: 1.3;
            color: var(--clr-text);
            margin-bottom: 1rem;
            max-width: 720px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 28px;
            font-size: 0.9rem;
            color: var(--clr-text-light);
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--clr-primary-light);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
        }

        @media (max-width: 768px) {
            .article-hero {
                padding: 2rem 0 1.8rem;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                font-size: 0.8rem;
                gap: 10px 18px;
            }
        }
        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .article-breadcrumb {
                font-size: 0.75rem;
            }
        }

        /* ===== 文章正文 ===== */
        .article-body-section {
            padding: 3rem 0 2rem;
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--clr-text);
        }
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            margin-top: 2rem;
            margin-bottom: 0.8rem;
            font-family: var(--font-serif);
        }
        .article-body h2 {
            font-size: 1.5rem;
            border-left: 4px solid var(--clr-accent);
            padding-left: 16px;
        }
        .article-body h3 {
            font-size: 1.25rem;
        }
        .article-body p {
            margin-bottom: 1.2rem;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 1.2rem;
            padding-left: 1.6rem;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 0.4rem;
        }
        .article-body a {
            color: var(--clr-accent);
            text-decoration: underline;
            text-underline-offset: 2px;
        }
        .article-body a:hover {
            color: var(--clr-accent-dark);
        }
        .article-body blockquote {
            border-left: 4px solid var(--clr-primary-light);
            background: var(--clr-bg);
            padding: 1rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--clr-text-light);
            font-style: italic;
        }
        .article-body img {
            margin: 1.5rem auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }
        .article-body code {
            background: var(--clr-bg-dark);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
        }
        .article-body pre {
            background: var(--clr-bg-dark);
            padding: 1.2rem 1.5rem;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5rem 0;
            border: 1px solid var(--clr-border-light);
        }

        .article-not-found {
            text-align: center;
            padding: 3rem 1rem;
        }
        .article-not-found i {
            font-size: 3rem;
            color: var(--clr-text-lighter);
            margin-bottom: 1rem;
        }
        .article-not-found h2 {
            font-size: 1.5rem;
            margin-bottom: 0.8rem;
        }
        .article-not-found p {
            color: var(--clr-text-light);
            margin-bottom: 1.5rem;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-primary);
            color: var(--clr-white);
            padding: 10px 28px;
            border-radius: 30px;
            font-weight: 600;
            transition: background var(--transition), transform var(--transition);
        }
        .article-not-found .btn-back:hover {
            background: var(--clr-primary-dark);
            color: var(--clr-white);
            transform: translateY(-2px);
        }

        /* 文章底部 */
        .article-footer-bar {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--clr-border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag {
            display: inline-block;
            background: var(--clr-bg);
            color: var(--clr-text-light);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.8rem;
            border: 1px solid var(--clr-border-light);
            transition: background var(--transition), border-color var(--transition);
        }
        .article-tags .tag:hover {
            background: var(--clr-bg-dark);
            border-color: var(--clr-primary-light);
            color: var(--clr-primary);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .article-share span {
            font-size: 0.85rem;
            color: var(--clr-text-light);
        }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--clr-bg);
            color: var(--clr-text-light);
            border: 1px solid var(--clr-border-light);
            transition: background var(--transition), color var(--transition), border-color var(--transition);
        }
        .article-share a:hover {
            background: var(--clr-primary);
            color: var(--clr-white);
            border-color: var(--clr-primary);
        }

        @media (max-width: 600px) {
            .article-footer-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .article-body {
                font-size: 0.98rem;
            }
        }

        /* ===== 相关文章 ===== */
        .related-section {
            padding: 3rem 0;
            background: var(--clr-bg-card);
            border-top: 1px solid var(--clr-border-light);
            border-bottom: 1px solid var(--clr-border-light);
        }

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

        .related-card {
            background: var(--clr-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border-light);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 1rem 1.2rem 1.2rem;
        }
        .related-card .card-cat {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--clr-accent);
            font-weight: 600;
            margin-bottom: 0.3rem;
            letter-spacing: 0.3px;
        }
        .related-card .card-title {
            font-family: var(--font-serif);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--clr-text);
            line-height: 1.4;
            margin-bottom: 0.4rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-title a {
            color: inherit;
            transition: color var(--transition);
        }
        .related-card .card-title a:hover {
            color: var(--clr-primary);
        }
        .related-card .card-date {
            font-size: 0.8rem;
            color: var(--clr-text-lighter);
        }

        @media (max-width: 900px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 560px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 3rem 0;
            background: var(--clr-bg);
        }

        .faq-list {
            max-width: 740px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--clr-border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 1.5rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--clr-text);
            cursor: pointer;
            transition: background var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: var(--clr-bg);
        }
        .faq-question i {
            color: var(--clr-accent);
            font-size: 0.85rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 1.5rem;
            color: var(--clr-text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.2rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 3.5rem 0;
            background: var(--clr-bg-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            background-color: rgba(237, 230, 218, 0.85);
            text-align: center;
            border-top: 1px solid var(--clr-border-light);
        }

        .cta-section h2 {
            font-size: 1.8rem;
            margin-bottom: 0.6rem;
        }
        .cta-section p {
            color: var(--clr-text-light);
            max-width: 520px;
            margin: 0 auto 1.8rem;
            font-size: 1.05rem;
        }

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

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
        }
        .btn-primary {
            background: var(--clr-accent);
            color: var(--clr-white);
            box-shadow: 0 4px 16px rgba(184, 92, 58, 0.25);
        }
        .btn-primary:hover {
            background: var(--clr-accent-dark);
            color: var(--clr-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(184, 92, 58, 0.35);
        }
        .btn-secondary {
            background: var(--clr-bg-card);
            color: var(--clr-text);
            border: 1px solid var(--clr-border);
        }
        .btn-secondary:hover {
            background: var(--clr-white);
            border-color: var(--clr-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }

        @media (max-width: 600px) {
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .btn-primary,
            .btn-secondary {
                padding: 10px 22px;
                font-size: 0.85rem;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--clr-text);
            color: var(--clr-bg);
            padding: 3rem 0 1.5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-brand .header-logo {
            color: var(--clr-bg);
            margin-bottom: 0.8rem;
            font-size: 1.3rem;
        }
        .footer-brand .header-logo i {
            color: var(--clr-accent);
        }
        .footer-brand p {
            color: var(--clr-text-lighter);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer h4 {
            font-family: var(--font-sans);
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--clr-bg);
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }

        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer ul a {
            color: var(--clr-text-lighter);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer ul a:hover {
            color: var(--clr-primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--clr-text-lighter);
        }
        .footer-bottom a {
            color: var(--clr-primary-light);
        }
        .footer-bottom a:hover {
            color: var(--clr-accent);
        }

        @media (max-width: 820px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.2rem;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        /* ===== 按钮通用 ===== */
        .btn-back-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--clr-primary);
            color: var(--clr-white);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-md);
            transition: opacity var(--transition), transform var(--transition), background var(--transition);
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            z-index: 999;
            border: none;
            cursor: pointer;
        }
        .btn-back-top.visible {
            opacity: 1;
            transform: translateY(0);
            pointer-events: all;
        }
        .btn-back-top:hover {
            background: var(--clr-primary-dark);
            transform: translateY(-2px);
        }

        /* ===== 额外响应式 ===== */
        @media (max-width: 480px) {
            .container {
                padding: 0 14px;
            }
            .container-narrow {
                padding: 0 14px;
            }
            :root {
                --spacing-section: 2rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }