/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --accent: #d94a3d;
            --accent-light: #e86a5e;
            --accent-dark: #b5382b;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #1a2a3a;
            --text: #2c3e50;
            --text-light: #6c7a8a;
            --text-white: #f0f4f8;
            --border: #e0e4e8;
            --border-light: #eef0f2;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 24px rgba(26, 58, 92, 0.08);
            --shadow-hover: 0 12px 40px rgba(26, 58, 92, 0.15);
            --shadow-btn: 0 4px 12px rgba(217, 74, 61, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --header-top-h: 38px;
            --nav-h: 72px;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            color: var(--primary-dark);
            font-weight: 700;
        }
        p {
            margin-bottom: 0.8rem;
            color: var(--text);
        }
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .section-padding {
            padding: 80px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 48px 0;
            }
            .container-custom {
                padding: 0 16px;
            }
        }
        @media (max-width: 520px) {
            .section-padding {
                padding: 36px 0;
            }
        }

        /* ===== Header Top Bar ===== */
        .header-top {
            background: var(--primary-dark);
            color: var(--text-white);
            font-size: 13px;
            line-height: var(--header-top-h);
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }
        .header-top a {
            color: var(--text-white);
            opacity: 0.85;
        }
        .header-top a:hover {
            opacity: 1;
            color: #fff;
        }
        .header-top-left span {
            margin-right: 20px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .header-top-left i {
            font-size: 12px;
        }
        .header-top-right a {
            margin-left: 18px;
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        @media (max-width: 640px) {
            .header-top {
                font-size: 12px;
                padding: 0 12px;
                justify-content: center;
                text-align: center;
            }
            .header-top-left span {
                margin-right: 12px;
            }
            .header-top-right a {
                margin-left: 10px;
            }
        }

        /* ===== Navigation ===== */
        .main-nav {
            background: var(--bg-card);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--nav-h);
            display: flex;
            align-items: center;
            border-bottom: 1px solid var(--border-light);
        }
        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 26px;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-logo:hover span {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            height: 100%;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            position: relative;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            height: 44px;
        }
        .nav-links a i {
            font-size: 14px;
            opacity: 0.7;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-links a.active {
            color: var(--accent);
            background: rgba(217, 74, 61, 0.08);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            background: var(--accent);
            border-radius: 3px 3px 0 0;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: #fff !important;
            padding: 8px 22px !important;
            border-radius: var(--radius-sm) !important;
            box-shadow: var(--shadow-btn);
            font-weight: 600 !important;
        }
        .nav-cta:hover {
            background: var(--accent-dark) !important;
            color: #fff !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(217, 74, 61, 0.4) !important;
        }
        .nav-cta i {
            opacity: 1 !important;
        }
        .nav-toggle {
            display: none;
            font-size: 24px;
            color: var(--primary-dark);
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: rgba(26, 58, 92, 0.05);
        }
        .nav-toggle:hover {
            background: rgba(26, 58, 92, 0.1);
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-h);
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px 24px;
                gap: 4px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
                border-radius: 0 0 var(--radius) var(--radius);
                height: auto;
                z-index: 99;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                height: 48px;
                padding: 8px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.active {
                background: rgba(217, 74, 61, 0.1);
                border-left: 3px solid var(--accent);
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                margin-top: 4px;
                text-align: center;
                justify-content: center;
            }
        }
        @media (max-width: 520px) {
            .main-nav {
                height: 60px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .nav-logo i {
                font-size: 20px;
            }
            .nav-links {
                top: 60px;
                padding: 12px 16px 18px;
            }
        }

        /* ===== Hero Section ===== */
        .hero {
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 24px;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
            animation: heroBg 20s ease-in-out infinite alternate;
        }
        @keyframes heroBg {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.05);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(26, 58, 92, 0.3) 0%, transparent 70%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 820px;
            color: #fff;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 13px;
            color: var(--text-white);
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-badge i {
            color: var(--accent-light);
        }
        .hero h1 {
            font-size: 48px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
            line-height: 1.2;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
        }
        .hero h1 span {
            color: var(--accent-light);
            position: relative;
        }
        .hero p {
            font-size: 19px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .hero-actions .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(217, 74, 61, 0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(217, 74, 61, 0.45);
        }
        .hero-actions .btn-secondary {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-sm);
            font-size: 17px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .hero-actions .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.22);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 420px;
                padding: 60px 16px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                padding: 12px 28px;
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero p {
                font-size: 14px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Section Title ===== */
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title p {
            font-size: 17px;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-tag {
            display: inline-block;
            background: rgba(217, 74, 61, 0.08);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 40px;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 26px;
            }
            .section-title p {
                font-size: 15px;
            }
            .section-title {
                margin-bottom: 32px;
            }
        }

        /* ===== Feature / Intro Section ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .feature-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px 32px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(217, 74, 61, 0.15);
        }
        .feature-card .icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 26px;
            color: #fff;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .feature-card {
                padding: 28px 20px 24px;
            }
            .feature-card h3 {
                font-size: 18px;
            }
        }
        @media (max-width: 520px) {
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ===== Category / Cover Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .category-card .card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            border-radius: 0;
            display: block;
        }
        .category-card .card-body {
            padding: 24px 28px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-tag {
            display: inline-block;
            background: rgba(26, 58, 92, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .category-card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }
        .category-card p {
            font-size: 14px;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
        }
        .category-card .card-link:hover {
            gap: 12px;
            color: var(--accent-dark);
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-card .card-img {
                height: 180px;
            }
            .category-card .card-body {
                padding: 18px 20px 22px;
            }
        }

        /* ===== Content / News List (CMS) ===== */
        .content-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 16px;
        }
        .content-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: flex-start;
            gap: 18px;
        }
        .content-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
            border-color: rgba(217, 74, 61, 0.1);
        }
        .content-item .item-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(26, 58, 92, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
        }
        .content-item .item-body {
            flex: 1;
            min-width: 0;
        }
        .content-item .item-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--primary-dark);
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-item .item-title a {
            color: inherit;
        }
        .content-item .item-title a:hover {
            color: var(--accent);
        }
        .content-item .item-meta {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .content-item .item-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .content-item .item-meta i {
            font-size: 12px;
        }
        .content-item .item-desc {
            font-size: 14px;
            color: var(--text-light);
            margin-top: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-empty {
            text-align: center;
            padding: 48px 24px;
            background: var(--bg-card);
            border-radius: var(--radius);
            color: var(--text-light);
            font-size: 16px;
            border: 1px dashed var(--border);
        }
        .content-empty i {
            font-size: 36px;
            color: var(--border);
            display: block;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .content-item {
                padding: 16px 18px;
                flex-direction: column;
                gap: 10px;
            }
            .content-item .item-num {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }
            .content-item .item-title {
                font-size: 15px;
            }
        }

        /* ===== Stats / Data Section ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 16px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .stat-item .stat-num {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.1;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 28px;
            color: var(--primary-light);
            margin-bottom: 12px;
            opacity: 0.5;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-num {
                font-size: 32px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .stat-num {
                font-size: 28px;
            }
        }

        /* ===== Steps / Process ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 15%;
            right: 15%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
            opacity: 0.2;
            z-index: 0;
        }
        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 32px 20px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        .step-num {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.2);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--primary-dark);
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-light);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .steps-grid::before {
                display: none;
            }
            .step-item {
                padding: 24px 18px 22px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(217, 74, 61, 0.12);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--primary-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
            gap: 12px;
        }
        .faq-question:hover {
            background: rgba(26, 58, 92, 0.02);
        }
        .faq-question i {
            color: var(--accent);
            font-size: 14px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-answer p {
            margin: 0;
        }
        @media (max-width: 768px) {
            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-answer {
                padding: 0 18px 14px;
                font-size: 14px;
            }
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 72px 24px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-cta {
            background: var(--accent);
            color: #fff;
            padding: 16px 48px;
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 700;
            box-shadow: 0 8px 28px rgba(217, 74, 61, 0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        .cta-section .btn-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(217, 74, 61, 0.45);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 48px 16px;
            }
            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 16px;
            }
            .cta-section .btn-cta {
                padding: 14px 32px;
                font-size: 16px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 24px 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-brand h3 i {
            color: var(--accent-light);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 18px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--accent-light);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .site-footer {
                padding: 32px 16px 16px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Utility Classes ===== */
        .text-center {
            text-align: center;
        }
        .mt-1 {
            margin-top: 8px;
        }
        .mt-2 {
            margin-top: 16px;
        }
        .mt-3 {
            margin-top: 24px;
        }
        .mb-2 {
            margin-bottom: 16px;
        }
        .mb-3 {
            margin-bottom: 24px;
        }
        .gap-1 {
            gap: 8px;
        }
        .gap-2 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .bg-white {
            background: var(--bg-card);
        }
        .bg-light {
            background: var(--bg);
        }
        .rounded {
            border-radius: var(--radius);
        }
        .shadow {
            box-shadow: var(--shadow);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(26, 58, 92, 0.08);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 40px;
        }
        .badge-accent {
            background: rgba(217, 74, 61, 0.1);
            color: var(--accent);
        }

        /* ===== Foundation Overrides ===== */
        .grid-container {
            max-width: var(--max-width);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        .cell {
            margin-bottom: 0;
        }
        .grid-x>.cell {
            padding: 0;
        }
        .grid-margin-x>.cell {
            padding: 0 12px;
        }
        .grid-margin-x {
            margin: 0 -12px;
        }
        @media (max-width: 640px) {
            .grid-margin-x>.cell {
                padding: 0 8px;
            }
            .grid-margin-x {
                margin: 0 -8px;
            }
        }
        button,
        .button {
            font-family: var(--font);
        }
        .button.primary {
            background: var(--accent);
        }
        .button.primary:hover {
            background: var(--accent-dark);
        }

        /* ===== Scroll Fade ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Back to Top ===== */
        .back-top {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.25);
            transition: var(--transition);
            z-index: 50;
            opacity: 0;
            pointer-events: none;
        }
        .back-top.show {
            opacity: 1;
            pointer-events: auto;
        }
        .back-top:hover {
            background: var(--primary-light);
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(26, 58, 92, 0.35);
        }
        @media (max-width: 520px) {
            .back-top {
                bottom: 20px;
                right: 20px;
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
        }

/* roulang page: article */
/* ===== :root 设计变量 ===== */
        :root {
            --clr-primary: #8B1A1A;
            --clr-primary-light: #C0392B;
            --clr-primary-dark: #5C0E0E;
            --clr-secondary: #D4A853;
            --clr-secondary-light: #E8C97A;
            --clr-accent: #F5E6CC;
            --clr-bg: #FDF8F3;
            --clr-bg-alt: #FAF1E8;
            --clr-bg-card: #FFFFFF;
            --clr-text: #2D1B0E;
            --clr-text-light: #7A6B5D;
            --clr-text-muted: #A89888;
            --clr-border: #E8DDD0;
            --clr-border-light: #F0E8DE;
            --clr-white: #FFFFFF;
            --clr-success: #2E7D32;
            --clr-warning: #E65100;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(139,26,26,0.08);
            --shadow-md: 0 6px 24px rgba(139,26,26,0.10);
            --shadow-lg: 0 12px 40px rgba(139,26,26,0.14);
            --shadow-hover: 0 16px 48px rgba(139,26,26,0.18);
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-primary: 'Noto Serif SC', 'Source Han Serif SC', 'Georgia', serif;
            --font-body: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
            --gap: 32px;
            --gap-sm: 20px;
            --gap-lg: 48px;
        }
        
        /* ===== Base 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-body);
            background: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        a { color: var(--clr-primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--clr-primary-light); }
        a:focus-visible { outline: 3px solid var(--clr-secondary); outline-offset: 2px; border-radius: 4px; }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        button:focus-visible { outline: 3px solid var(--clr-secondary); outline-offset: 2px; border-radius: 6px; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-family: var(--font-primary); color: var(--clr-text); line-height: 1.3; font-weight: 700; }
        h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }
        h2 { font-size: clamp(1.5rem, 3vw, 2.0rem); }
        h3 { font-size: clamp(1.2rem, 2.2vw, 1.5rem); }
        h4 { font-size: 1.1rem; }
        p { margin-bottom: 1rem; color: var(--clr-text-light); }
        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--gap);
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 var(--gap-sm); }
        }
        
        /* ===== 顶部信息条 ===== */
        .top-bar-strip {
            background: var(--clr-primary-dark);
            color: var(--clr-accent);
            font-size: 0.85rem;
            padding: 6px 0;
            line-height: 1.4;
        }
        .top-bar-strip .container-custom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .top-bar-strip a {
            color: var(--clr-secondary-light);
            font-weight: 500;
        }
        .top-bar-strip a:hover { color: var(--clr-white); }
        .top-bar-strip .strip-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .top-bar-strip .strip-right i { margin-right: 4px; }
        
        /* ===== 导航栏 ===== */
        .main-nav {
            background: var(--clr-white);
            border-bottom: 1px solid var(--clr-border-light);
            box-shadow: 0 2px 12px rgba(139,26,26,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            height: var(--nav-height);
            transition: box-shadow var(--transition);
        }
        .main-nav.scrolled { box-shadow: var(--shadow-md); }
        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-primary);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--clr-primary);
        }
        .nav-logo i { font-size: 1.6rem; color: var(--clr-secondary); }
        .nav-logo:hover { color: var(--clr-primary-dark); }
        .nav-logo span { white-space: nowrap; }
        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--clr-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover { background: var(--clr-accent); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--clr-text);
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a i { margin-right: 6px; font-size: 0.9rem; }
        .nav-links a:hover {
            background: var(--clr-accent);
            color: var(--clr-primary);
        }
        .nav-links a.active {
            background: var(--clr-primary);
            color: var(--clr-white);
        }
        .nav-links a.active:hover { background: var(--clr-primary-light); }
        .nav-links .nav-cta {
            background: var(--clr-secondary);
            color: var(--clr-primary-dark);
            font-weight: 700;
            padding: 8px 24px;
            border-radius: var(--radius-xl);
            box-shadow: 0 2px 8px rgba(212,168,83,0.3);
        }
        .nav-links .nav-cta:hover {
            background: var(--clr-secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(212,168,83,0.4);
        }
        
        @media (max-width: 768px) {
            .nav-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--clr-white);
                flex-direction: column;
                padding: 16px 20px;
                border-bottom: 2px solid var(--clr-border);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-links.open { display: flex; }
            .nav-links a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
            .nav-links .nav-cta { text-align: center; }
            .top-bar-strip .strip-right span { display: none; }
        }
        @media (max-width: 520px) {
            :root { --nav-height: 62px; }
            .nav-logo { font-size: 1.1rem; }
            .nav-logo i { font-size: 1.3rem; }
            .top-bar-strip { font-size: 0.75rem; }
            .top-bar-strip .strip-right { gap: 8px; }
        }
        
        /* ===== 文章页 Banner ===== */
        .article-banner {
            background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 60%, var(--clr-primary-light) 100%);
            padding: 60px 0 50px;
            position: relative;
            overflow: hidden;
            min-height: 240px;
            display: flex;
            align-items: center;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.15;
            pointer-events: none;
        }
        .article-banner .container-custom {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .article-banner .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
            font-size: 0.9rem;
            color: var(--clr-accent);
            margin-bottom: 16px;
        }
        .article-banner .breadcrumb a {
            color: var(--clr-secondary-light);
            transition: color var(--transition);
        }
        .article-banner .breadcrumb a:hover { color: var(--clr-white); }
        .article-banner .breadcrumb span { color: var(--clr-accent); opacity: 0.8; }
        .article-banner h1 {
            color: var(--clr-white);
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
            max-width: 900px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.2);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .article-banner .meta-line {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            color: var(--clr-accent);
            font-size: 0.9rem;
            align-items: center;
        }
        .article-banner .meta-line i { margin-right: 6px; }
        .article-banner .meta-line .badge-cat {
            background: var(--clr-secondary);
            color: var(--clr-primary-dark);
            padding: 3px 14px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.8rem;
        }
        
        @media (max-width: 768px) {
            .article-banner { padding: 40px 0 32px; min-height: 180px; }
            .article-banner h1 { font-size: 1.4rem; }
            .article-banner .meta-line { gap: 12px; font-size: 0.8rem; }
        }
        @media (max-width: 520px) {
            .article-banner { padding: 28px 0 24px; min-height: 140px; }
            .article-banner h1 { font-size: 1.2rem; }
        }
        
        /* ===== 文章主体 ===== */
        .article-main {
            padding: 48px 0 64px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        .article-body {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 40px;
            border: 1px solid var(--clr-border-light);
        }
        .article-body .post-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin-bottom: 28px;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--clr-text);
        }
        .article-body .content p { margin-bottom: 1.2rem; }
        .article-body .content h2, 
        .article-body .content h3 { margin-top: 2rem; margin-bottom: 0.8rem; }
        .article-body .content ul, 
        .article-body .content ol { 
            margin-bottom: 1.2rem; 
            padding-left: 1.8rem; 
            list-style: disc; 
            color: var(--clr-text-light);
        }
        .article-body .content ol { list-style: decimal; }
        .article-body .content li { margin-bottom: 0.4rem; }
        .article-body .content blockquote {
            border-left: 4px solid var(--clr-secondary);
            background: var(--clr-accent);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.5rem 0;
            color: var(--clr-text);
            font-style: italic;
        }
        .article-body .content a { text-decoration: underline; text-underline-offset: 2px; }
        .article-body .content img { border-radius: var(--radius-md); margin: 1.5rem 0; }
        .article-body .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.95rem;
        }
        .article-body .content th, 
        .article-body .content td {
            border: 1px solid var(--clr-border);
            padding: 10px 16px;
            text-align: left;
        }
        .article-body .content th { background: var(--clr-accent); font-weight: 600; color: var(--clr-text); }
        .article-body .content code {
            background: var(--clr-accent);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--clr-primary);
        }
        .article-body .content pre {
            background: var(--clr-primary-dark);
            color: var(--clr-accent);
            padding: 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.5rem 0;
            font-size: 0.9rem;
        }
        .article-body .content pre code { background: none; color: inherit; padding: 0; }
        
        .article-footer-meta {
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--clr-border-light);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }
        .article-footer-meta .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-footer-meta .tags span {
            background: var(--clr-accent);
            color: var(--clr-primary);
            padding: 4px 14px;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: 500;
        }
        .article-footer-meta .share-links {
            display: flex;
            gap: 10px;
        }
        .article-footer-meta .share-links a {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--clr-accent);
            color: var(--clr-primary);
            transition: all var(--transition);
            font-size: 1rem;
        }
        .article-footer-meta .share-links a:hover {
            background: var(--clr-primary);
            color: var(--clr-white);
            transform: translateY(-3px);
        }
        
        /* ===== 侧边栏 ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }
        .sidebar-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--clr-border-light);
        }
        .sidebar-card h3 {
            font-size: 1.1rem;
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--clr-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3 i { color: var(--clr-secondary); }
        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--clr-border-light);
        }
        .sidebar-card ul li:last-child { border-bottom: none; }
        .sidebar-card ul li a {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--clr-text);
            transition: color var(--transition);
        }
        .sidebar-card ul li a:hover { color: var(--clr-primary); }
        .sidebar-card ul li a i { 
            margin-top: 4px; 
            color: var(--clr-secondary); 
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .sidebar-card .cta-box {
            text-align: center;
            padding: 16px 0 0;
        }
        .sidebar-card .cta-box p { font-size: 0.95rem; margin-bottom: 16px; }
        .sidebar-card .btn-full {
            display: block;
            width: 100%;
            padding: 12px;
            background: var(--clr-primary);
            color: var(--clr-white);
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition);
            text-align: center;
        }
        .sidebar-card .btn-full:hover {
            background: var(--clr-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .sidebar-card .btn-full i { margin-right: 8px; }
        
        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr 280px; gap: 32px; }
        }
        @media (max-width: 768px) {
            .article-layout { grid-template-columns: 1fr; gap: 32px; }
            .article-body { padding: 24px 20px; }
            .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        }
        @media (max-width: 520px) {
            .article-body { padding: 16px 14px; }
            .article-sidebar { grid-template-columns: 1fr; }
            .article-footer-meta { flex-direction: column; align-items: flex-start; }
        }
        
        /* ===== 导航/推荐文章区域 ===== */
        .related-posts {
            background: var(--clr-bg-alt);
            padding: 48px 0;
        }
        .related-posts h2 {
            text-align: center;
            margin-bottom: 32px;
        }
        .related-posts h2 i { color: var(--clr-secondary); margin-right: 10px; }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--clr-bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--clr-border-light);
            transition: all var(--transition);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .related-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .related-card .card-body {
            padding: 18px 20px 20px;
        }
        .related-card .card-body h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h4 a { color: var(--clr-text); }
        .related-card .card-body h4 a:hover { color: var(--clr-primary); }
        .related-card .card-body p {
            font-size: 0.88rem;
            color: var(--clr-text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0;
        }
        .related-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 12px;
            font-size: 0.8rem;
            color: var(--clr-text-muted);
        }
        .related-card .card-meta .badge {
            background: var(--clr-accent);
            color: var(--clr-primary);
            padding: 2px 10px;
            border-radius: var(--radius-xl);
            font-size: 0.7rem;
            font-weight: 500;
        }
        
        @media (max-width: 768px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 520px) {
            .related-grid { grid-template-columns: 1fr; }
            .related-card img { height: 160px; }
        }
        
        /* ===== 文章不存在提示 ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-box i {
            font-size: 4rem;
            color: var(--clr-secondary);
            margin-bottom: 20px;
        }
        .not-found-box h2 { margin-bottom: 12px; }
        .not-found-box p { font-size: 1.1rem; margin-bottom: 24px; }
        .not-found-box .btn-back {
            display: inline-block;
            padding: 12px 36px;
            background: var(--clr-primary);
            color: var(--clr-white);
            border-radius: var(--radius-xl);
            font-weight: 600;
            transition: all var(--transition);
        }
        .not-found-box .btn-back:hover {
            background: var(--clr-primary-light);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        
        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--clr-primary-dark);
            color: var(--clr-accent);
            padding: 48px 0 28px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .site-footer .footer-brand h3 {
            color: var(--clr-white);
            font-family: var(--font-primary);
            font-size: 1.3rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .site-footer .footer-brand h3 i { color: var(--clr-secondary); }
        .site-footer .footer-brand p {
            color: var(--clr-accent);
            opacity: 0.8;
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .site-footer .footer-col h4 {
            color: var(--clr-white);
            font-size: 1rem;
            margin-bottom: 14px;
            font-family: var(--font-body);
            font-weight: 600;
        }
        .site-footer .footer-col a {
            display: block;
            color: var(--clr-accent);
            opacity: 0.75;
            font-size: 0.9rem;
            padding: 4px 0;
            transition: all var(--transition);
        }
        .site-footer .footer-col a:hover { opacity: 1; color: var(--clr-secondary-light); padding-left: 4px; }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            opacity: 0.7;
            gap: 12px;
        }
        @media (max-width: 768px) {
            .site-footer .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
            .site-footer .footer-brand { grid-column: 1 / -1; }
        }
        @media (max-width: 520px) {
            .site-footer .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .site-footer .footer-bottom { flex-direction: column; text-align: center; }
            .site-footer { padding: 32px 0 20px; }
        }
        
        /* ===== 通用工具 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 16px; }
        .mt-2 { margin-top: 32px; }
        .mb-1 { margin-bottom: 16px; }
        .mb-2 { margin-bottom: 32px; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }
        
        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .fade-in-up { animation: fadeInUp 0.6s ease-out both; }
        .delay-1 { animation-delay: 0.1s; }
        .delay-2 { animation-delay: 0.2s; }
        .delay-3 { animation-delay: 0.3s; }
        
        /* 文章内容区域图片自适应 */
        .article-body .content img.aligncenter { margin-left: auto; margin-right: auto; }
        .article-body .content img.alignleft { float: left; margin-right: 20px; margin-top: 0.5rem; }
        .article-body .content img.alignright { float: right; margin-left: 20px; margin-top: 0.5rem; }
        @media (max-width: 520px) {
            .article-body .content img.alignleft,
            .article-body .content img.alignright { float: none; margin: 1rem 0; }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3c6e;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --secondary: #d4a843;
            --secondary-light: #e8c46a;
            --accent: #f0a030;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0d1b2e;
            --text-dark: #1a1a2e;
            --text-body: #3a3a4a;
            --text-light: #6a6a7a;
            --text-white: #f0f2f5;
            --border-color: #e2e6ed;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
            --font-main: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== 基础 Reset ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: var(--font-main);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
        a:hover { color: var(--primary-light); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-dark); margin-bottom: 0.5em; }
        p { margin-bottom: 1em; }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media screen and (max-width: 768px) {
            .container-custom { padding: 0 16px; }
        }

        /* ===== 导航 ===== */
        .main-nav {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0;
        }
        .main-nav .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.3px;
        }
        .nav-logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .nav-logo span {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-logo:hover { color: var(--primary-dark); }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-body);
            transition: all var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a i { font-size: 0.85rem; color: var(--text-light); transition: color var(--transition); }
        .nav-links a:hover {
            background: rgba(26, 60, 110, 0.06);
            color: var(--primary);
        }
        .nav-links a:hover i { color: var(--primary); }
        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(26, 60, 110, 0.25);
        }
        .nav-links a.active i { color: rgba(255,255,255,0.85); }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: var(--primary-dark);
            font-weight: 700;
            padding: 8px 22px;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 14px rgba(212, 168, 67, 0.35);
        }
        .nav-links a.nav-cta i { color: var(--primary-dark); }
        .nav-links a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(212, 168, 67, 0.45);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 2px solid var(--border-color);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--text-dark);
            cursor: pointer;
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        @media screen and (max-width: 1024px) {
            .nav-links a { padding: 6px 12px; font-size: 0.85rem; }
            .nav-links a.nav-cta { padding: 6px 16px; }
        }
        @media screen and (max-width: 768px) {
            .main-nav .container-custom { height: 60px; }
            .nav-logo { font-size: 1.2rem; }
            .nav-toggle { display: block; }
            .nav-links {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 24px;
                border-bottom: 2px solid var(--border-color);
                box-shadow: var(--shadow-md);
                gap: 4px;
                z-index: 999;
            }
            .nav-links.open { display: flex; }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-links a.nav-cta {
                margin-top: 8px;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== Banner ===== */
        .category-banner {
            position: relative;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 80px 0 60px;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg-light), transparent);
        }
        .category-banner .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .category-banner h1 {
            font-size: 3rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 800;
            letter-spacing: -0.5px;
            text-shadow: 0 4px 20px rgba(0,0,0,0.25);
        }
        .category-banner h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .category-banner p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .category-banner .banner-tags {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        .category-banner .banner-tags span {
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(6px);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.9);
            border: 1px solid rgba(255,255,255,0.2);
        }
        .category-banner .banner-tags span i { margin-right: 6px; color: var(--secondary); }
        @media screen and (max-width: 768px) {
            .category-banner { min-height: 260px; padding: 60px 0 40px; }
            .category-banner h1 { font-size: 2rem; }
            .category-banner p { font-size: 1rem; }
        }
        @media screen and (max-width: 520px) {
            .category-banner h1 { font-size: 1.6rem; }
            .category-banner .banner-tags span { font-size: 0.8rem; padding: 4px 14px; }
        }

        /* ===== 板块通用 ===== */
        .section-pad { padding: 80px 0; }
        .section-pad-sm { padding: 60px 0; }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-title h2 i { color: var(--secondary); margin-right: 10px; }
        .section-title p {
            font-size: 1.05rem;
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }
        .section-title .title-line {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px;
            margin: 14px auto 0;
        }
        @media screen and (max-width: 768px) {
            .section-pad { padding: 48px 0; }
            .section-pad-sm { padding: 36px 0; }
            .section-title h2 { font-size: 1.6rem; }
            .section-title p { font-size: 0.95rem; }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }
        .breadcrumb-wrap .container-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb-wrap a { color: var(--primary); }
        .breadcrumb-wrap a:hover { text-decoration: underline; }
        .breadcrumb-wrap i { font-size: 0.75rem; color: var(--text-light); margin: 0 4px; }
        .breadcrumb-wrap .current { color: var(--text-body); font-weight: 500; }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-item .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-item .card-body {
            padding: 24px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-body h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            font-weight: 700;
            color: var(--text-dark);
        }
        .card-item .card-body h3 a { color: inherit; }
        .card-item .card-body h3 a:hover { color: var(--primary); }
        .card-item .card-body p {
            font-size: 0.95rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .card-item .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-light);
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: auto;
        }
        .card-item .card-meta span i { margin-right: 4px; color: var(--secondary); }
        .card-item .card-tag {
            display: inline-block;
            background: rgba(212, 168, 67, 0.12);
            color: var(--primary);
            font-size: 0.8rem;
            padding: 2px 12px;
            border-radius: 20px;
            font-weight: 500;
        }
        @media screen and (max-width: 1024px) {
            .card-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
        }
        @media screen and (max-width: 600px) {
            .card-grid { grid-template-columns: 1fr; gap: 16px; }
            .card-item .card-img { height: 180px; }
        }

        /* ===== 步骤流程 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            counter-reset: step-counter;
        }
        .step-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--secondary);
        }
        .step-card .step-num {
            width: 52px;
            height: 52px;
            line-height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-size: 1.4rem;
            font-weight: 800;
            margin: 0 auto 18px;
            box-shadow: 0 6px 18px rgba(26, 60, 110, 0.25);
        }
        .step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        .step-card p {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.7;
        }
        .step-card i { font-size: 0.9rem; color: var(--secondary); margin-top: 12px; }
        @media screen and (max-width: 768px) {
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        /* ===== FAQ ===== */
        .faq-list { max-width: 820px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover { border-color: var(--secondary); }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 12px;
            list-style: none;
            transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary i.fa-chevron-down {
            margin-left: auto;
            color: var(--secondary);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-item[open] summary i.fa-chevron-down { transform: rotate(180deg); }
        .faq-item summary:hover { background: rgba(212, 168, 67, 0.04); }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-body);
            line-height: 1.8;
            font-size: 0.98rem;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
            margin-top: 0;
        }
        .faq-item .faq-answer p { margin-bottom: 0.6em; }
        .faq-item .faq-answer a { color: var(--primary); text-decoration: underline; }
        @media screen and (max-width: 768px) {
            .faq-item summary { padding: 16px 18px; font-size: 0.98rem; }
            .faq-item .faq-answer { padding: 0 18px 16px; font-size: 0.92rem; }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.1;
            mix-blend-mode: overlay;
        }
        .cta-section .container-custom {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 64px 24px;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .cta-section h2 i { color: var(--secondary); margin-right: 10px; }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            max-width: 580px;
            margin: 0 auto 28px;
        }
        .cta-section .cta-btn-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .cta-section .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            background: var(--secondary);
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            box-shadow: 0 6px 24px rgba(212, 168, 67, 0.4);
        }
        .cta-section .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(212, 168, 67, 0.55);
            background: var(--secondary-light);
            color: var(--primary-dark);
        }
        .cta-section .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border: 2px solid rgba(255,255,255,0.4);
            color: #fff;
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            transition: all var(--transition);
            background: transparent;
        }
        .cta-section .btn-outline:hover {
            border-color: var(--secondary);
            background: rgba(212, 168, 67, 0.12);
            color: var(--secondary);
        }
        @media screen and (max-width: 768px) {
            .cta-section .container-custom { padding: 40px 16px; }
            .cta-section h2 { font-size: 1.6rem; }
            .cta-section p { font-size: 1rem; }
            .cta-section .btn-primary,
            .cta-section .btn-outline { padding: 12px 24px; font-size: 0.95rem; }
        }

        /* ===== 特色列表 ===== */
        .feature-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: var(--bg-white);
            padding: 20px 24px;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--secondary);
        }
        .feature-item .feat-icon {
            width: 44px;
            height: 44px;
            min-width: 44px;
            border-radius: 50%;
            background: rgba(212, 168, 67, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.2rem;
        }
        .feature-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text-dark);
        }
        .feature-item p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            line-height: 1.6;
        }
        @media screen and (max-width: 768px) {
            .feature-list { grid-template-columns: 1fr; gap: 16px; }
            .feature-item { padding: 16px 18px; }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 14px;
            font-weight: 800;
        }
        .footer-brand h3 i { color: var(--secondary); margin-right: 8px; }
        .footer-brand p {
            font-size: 0.95rem;
            line-height: 1.8;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .footer-col a {
            display: block;
            color: rgba(255,255,255,0.6);
            font-size: 0.92rem;
            padding: 5px 0;
            transition: all var(--transition);
        }
        .footer-col a:hover { color: var(--secondary); padding-left: 6px; }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.45);
        }
        .footer-bottom span { margin: 4px 0; }
        @media screen and (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media screen and (max-width: 600px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; gap: 6px; }
        }

        /* ===== Foundation 覆写 ===== */
        .grid-container { max-width: 1200px; }
        .cell { padding: 0; }
        .grid-x { margin: 0; }
        .grid-x > .cell { padding: 0; }

        /* ===== 额外工具 ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 12px; }
        .mt-2 { margin-top: 24px; }
        .mb-1 { margin-bottom: 12px; }
        .mb-2 { margin-bottom: 24px; }
        .gap-1 { gap: 16px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .rounded-full { border-radius: 9999px; }

        /* 分类 banner 标签微调 */
        .tag-pill {
            display: inline-block;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
            border: 1px solid rgba(255,255,255,0.15);
            margin: 4px;
        }
        .tag-pill i { margin-right: 6px; color: var(--secondary); }

        /* 加载更多 */
        .load-more-wrap { text-align: center; margin-top: 40px; }
        .load-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 36px;
            border: 2px solid var(--primary);
            color: var(--primary);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.98rem;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition);
        }
        .load-more-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 60, 110, 0.25);
        }
        .load-more-btn i { transition: transform var(--transition); }
        .load-more-btn:hover i { transform: rotate(180deg); }

        /* ===== 响应式补丁 ===== */
        @media screen and (max-width: 520px) {
            .nav-logo span { font-size: 1rem; }
            .category-banner h1 { font-size: 1.4rem; }
            .category-banner p { font-size: 0.9rem; }
            .section-title h2 { font-size: 1.4rem; }
            .card-item .card-body { padding: 18px 16px 16px; }
            .step-card { padding: 24px 18px 20px; }
            .footer-grid { gap: 20px; }
        }