/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f1b3d;
            --primary-light: #1a2d5e;
            --primary-dark: #0a122a;
            --secondary: #f0a500;
            --secondary-light: #ffc233;
            --secondary-dark: #c98800;
            --accent: #e94560;
            --accent-light: #ff6b81;
            --bg: #0b0e1a;
            --bg-card: #11162b;
            --bg-card-hover: #1a2142;
            --bg-section: #0d1222;
            --text: #eaeef5;
            --text-muted: #8a94b0;
            --text-light: #b8c4dd;
            --border: #1e2850;
            --border-light: #2e3a66;
            --radius: 14px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.6);
            --transition: 0.25s ease;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container: 1200px;
            --gap: 24px;
            --gap-lg: 48px;
        }

        /* ===== 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-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary-light);
        }
        a:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 4px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        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: 1.25;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.5vw, 2.4rem);
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.5rem);
        }
        p {
            margin-bottom: 1rem;
            color: var(--text-light);
        }
        strong {
            color: var(--text);
        }

        /* ===== 容器 ===== */
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--gap);
        }
        .container--narrow {
            max-width: 880px;
        }

        /* ===== 板块间距 ===== */
        .section {
            padding: 80px 0;
        }
        .section--dark {
            background: var(--bg-section);
        }
        .section--sm {
            padding: 48px 0;
        }
        .section__header {
            text-align: center;
            margin-bottom: 52px;
        }
        .section__header h2 {
            margin-bottom: 12px;
        }
        .section__header p {
            max-width: 640px;
            margin: 0 auto;
            font-size: 1.05rem;
            color: var(--text-muted);
        }
        .section__badge {
            display: inline-block;
            background: rgba(240, 165, 0, 0.15);
            color: var(--secondary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 40px;
            letter-spacing: 0.3px;
            margin-bottom: 14px;
            border: 1px solid rgba(240, 165, 0, 0.2);
        }

        /* ===== 导航 ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 14, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header__logo i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .header__logo span {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .header__nav a {
            padding: 8px 18px;
            border-radius: 40px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header__nav a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.06);
        }
        .header__nav a.active {
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.12);
            font-weight: 600;
        }
        .header__actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header__search {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 40px;
            padding: 0 16px;
            height: 40px;
            transition: all var(--transition);
            min-width: 180px;
        }
        .header__search:focus-within {
            border-color: var(--secondary);
            background: rgba(255, 255, 255, 0.08);
            box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.15);
        }
        .header__search i {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-right: 10px;
        }
        .header__search input {
            background: transparent;
            color: var(--text);
            width: 100%;
            height: 100%;
            font-size: 0.88rem;
        }
        .header__search input::placeholder {
            color: var(--text-muted);
        }
        .header__btn {
            padding: 8px 22px;
            border-radius: 40px;
            font-size: 0.88rem;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .header__btn--outline {
            border: 1px solid var(--border-light);
            color: var(--text-light);
        }
        .header__btn--outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.08);
        }
        .header__btn--primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
        }
        .header__btn--primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(240, 165, 0, 0.4);
        }
        .header__toggle {
            display: none;
            font-size: 1.6rem;
            color: var(--text);
            padding: 4px 8px;
        }

        /* ===== 移动端导航 ===== */
        @media (max-width: 1024px) {
            .header__search {
                min-width: 120px;
                padding: 0 12px;
            }
            .header__search input {
                font-size: 0.82rem;
            }
            .header__nav a {
                padding: 6px 12px;
                font-size: 0.85rem;
            }
            .header__btn {
                padding: 6px 16px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 768px) {
            .header .container {
                height: 60px;
            }
            .header__logo {
                font-size: 1.1rem;
            }
            .header__logo i {
                font-size: 1.3rem;
            }
            .header__nav {
                display: none;
                position: absolute;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(11, 14, 26, 0.98);
                backdrop-filter: blur(18px);
                flex-direction: column;
                padding: 16px 20px 24px;
                border-bottom: 1px solid var(--border);
                gap: 4px;
                box-shadow: var(--shadow);
            }
            .header__nav.open {
                display: flex;
            }
            .header__nav a {
                padding: 12px 16px;
                font-size: 1rem;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .header__actions {
                gap: 8px;
            }
            .header__search {
                min-width: 100px;
                height: 36px;
                padding: 0 10px;
            }
            .header__search input {
                width: 80px;
            }
            .header__btn--outline {
                display: none;
            }
            .header__btn--primary {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .header__toggle {
                display: block;
            }
        }
        @media (max-width: 520px) {
            .header .container {
                gap: 6px;
            }
            .header__logo {
                font-size: 0.95rem;
                gap: 6px;
            }
            .header__logo i {
                font-size: 1.1rem;
            }
            .header__search {
                min-width: 36px;
                width: 36px;
                padding: 0;
                justify-content: center;
                background: transparent;
                border: none;
            }
            .header__search input {
                display: none;
            }
            .header__search i {
                margin: 0;
                font-size: 1.1rem;
            }
            .header__btn--primary {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 75vh;
            display: flex;
            align-items: center;
            background: var(--primary-dark);
            overflow: hidden;
        }
        .hero__bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.35;
            mix-blend-mode: overlay;
        }
        .hero__overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(15, 27, 61, 0.6), rgba(11, 14, 26, 0.92));
        }
        .hero .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .hero__content {
            max-width: 720px;
        }
        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(240, 165, 0, 0.12);
            border: 1px solid rgba(240, 165, 0, 0.2);
            padding: 6px 18px;
            border-radius: 40px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--secondary);
            margin-bottom: 24px;
        }
        .hero__badge i {
            font-size: 0.75rem;
        }
        .hero__title {
            font-size: clamp(2.4rem, 6vw, 4rem);
            font-weight: 900;
            line-height: 1.1;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 40%, var(--secondary-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero__desc {
            font-size: clamp(1.05rem, 2vw, 1.25rem);
            color: var(--text-light);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.7;
        }
        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .hero__btn--primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 60px;
            font-size: 1.05rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--primary-dark);
            box-shadow: 0 8px 32px rgba(240, 165, 0, 0.35);
            transition: all var(--transition);
        }
        .hero__btn--primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 44px rgba(240, 165, 0, 0.5);
            color: var(--primary-dark);
        }
        .hero__btn--ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-light);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .hero__btn--ghost:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.06);
        }
        .hero__stats {
            display: flex;
            gap: 40px;
            margin-top: 52px;
            flex-wrap: wrap;
        }
        .hero__stat-item {
            display: flex;
            flex-direction: column;
        }
        .hero__stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
        }
        .hero__stat-number sup {
            font-size: 1rem;
            font-weight: 600;
            color: var(--secondary);
            top: -0.6em;
        }
        .hero__stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 60vh;
            }
            .hero__stats {
                gap: 24px;
                margin-top: 36px;
            }
            .hero__stat-number {
                font-size: 1.6rem;
            }
            .hero__actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero__btn--primary,
            .hero__btn--ghost {
                justify-content: center;
                padding: 12px 24px;
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .hero__stats {
                gap: 16px;
                flex-direction: column;
            }
            .hero__stat-item {
                flex-direction: row;
                align-items: baseline;
                gap: 8px;
            }
            .hero__stat-label {
                margin-top: 0;
            }
        }

        /* ===== 卡片网格 ===== */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap);
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gap);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap);
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .grid-4,
            .grid-3,
            .grid-2 {
                grid-template-columns: 1fr;
            }
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .card__icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: rgba(240, 165, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--secondary);
            margin-bottom: 18px;
            border: 1px solid rgba(240, 165, 0, 0.15);
        }
        .card h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .card p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .card--cover {
            padding: 0;
            overflow: hidden;
            background: var(--bg-card);
        }
        .card--cover img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-bottom: 1px solid var(--border);
        }
        .card--cover .card__body {
            padding: 20px 22px 24px;
        }
        .card--cover .card__body h3 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .card--cover .card__body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }
        .card__tag {
            display: inline-block;
            background: rgba(233, 69, 96, 0.12);
            color: var(--accent-light);
            font-size: 0.72rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 30px;
            margin-bottom: 10px;
            border: 1px solid rgba(233, 69, 96, 0.15);
        }
        .card__meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
        }
        .card__meta i {
            margin-right: 4px;
            font-size: 0.75rem;
        }

        /* ===== 特色区块 ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: var(--gap);
        }
        .feature-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: all var(--transition);
        }
        .feature-item:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-light);
            transform: translateY(-3px);
        }
        .feature-item__icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(240, 165, 0, 0.15), rgba(233, 69, 96, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--secondary);
            margin: 0 auto 18px;
        }
        .feature-item h3 {
            font-size: 1.1rem;
            margin-bottom: 6px;
        }
        .feature-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 标签 ===== */
        .tag {
            display: inline-block;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.78rem;
            font-weight: 500;
            color: var(--text-light);
            transition: all var(--transition);
        }
        .tag:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.06);
        }
        .tag--active {
            background: rgba(240, 165, 0, 0.12);
            border-color: var(--secondary);
            color: var(--secondary);
        }

        /* ===== 列表 ===== */
        .list-card {
            display: flex;
            gap: 18px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
            transition: background var(--transition);
        }
        .list-card:last-child {
            border-bottom: none;
        }
        .list-card:hover {
            background: rgba(255, 255, 255, 0.02);
        }
        .list-card__img {
            width: 100px;
            min-height: 72px;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            flex-shrink: 0;
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .list-card__img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .list-card__body {
            flex: 1;
            min-width: 0;
        }
        .list-card__body h3 {
            font-size: 1rem;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .list-card__body h3 a {
            color: var(--text);
        }
        .list-card__body h3 a:hover {
            color: var(--secondary);
        }
        .list-card__body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .list-card__meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .list-card__meta .cat {
            color: var(--secondary);
            font-weight: 500;
        }
        @media (max-width: 520px) {
            .list-card {
                flex-direction: column;
                gap: 10px;
            }
            .list-card__img {
                width: 100%;
                aspect-ratio: 16 / 7;
                min-height: auto;
            }
        }

        /* ===== 流程步骤 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--gap);
            counter-reset: step;
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            position: relative;
            counter-increment: step;
        }
        .step-item::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--primary-dark);
            font-weight: 800;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
        }
        .step-item__icon {
            font-size: 2rem;
            color: var(--secondary);
            margin-bottom: 12px;
            margin-top: 8px;
        }
        .step-item h3 {
            font-size: 1rem;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--border-light);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            user-select: none;
            gap: 12px;
        }
        .faq-item__question i {
            color: var(--secondary);
            font-size: 0.85rem;
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-item__question i {
            transform: rotate(180deg);
        }
        .faq-item__answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-item__answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta {
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            border-radius: var(--radius-lg);
            padding: 60px 48px;
            text-align: center;
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta>* {
            position: relative;
            z-index: 2;
        }
        .cta h2 {
            margin-bottom: 12px;
        }
        .cta p {
            max-width: 560px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
            color: var(--text-light);
        }
        .cta .btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }
        .cta__btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            border-radius: 60px;
            font-size: 1rem;
            font-weight: 700;
            transition: all var(--transition);
        }
        .cta__btn--primary {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(240, 165, 0, 0.3);
        }
        .cta__btn--primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(240, 165, 0, 0.45);
            color: var(--primary-dark);
        }
        .cta__btn--outline {
            border: 1px solid var(--border-light);
            color: var(--text-light);
        }
        .cta__btn--outline:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.06);
        }
        @media (max-width: 640px) {
            .cta {
                padding: 40px 24px;
            }
            .cta__btn {
                padding: 12px 24px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--primary-dark);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer__brand .header__logo {
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .footer__brand p {
            font-size: 0.88rem;
            color: var(--text-muted);
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer__col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer__col a {
            display: block;
            font-size: 0.88rem;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color var(--transition);
        }
        .footer__col a:hover {
            color: var(--secondary);
        }
        .footer__bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }
        .footer__bottom a {
            color: var(--text-muted);
        }
        .footer__bottom a:hover {
            color: var(--secondary);
        }
        .footer__social {
            display: flex;
            gap: 12px;
        }
        .footer__social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: all var(--transition);
            font-size: 0.9rem;
        }
        .footer__social a:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            background: rgba(240, 165, 0, 0.06);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .footer__brand {
                grid-column: 1 / -1;
            }
        }
        @media (max-width: 520px) {
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer__bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 按钮通用 ===== */
        .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.92rem;
            color: var(--secondary);
            transition: gap var(--transition);
        }
        .btn-link:hover {
            gap: 12px;
            color: var(--secondary-light);
        }

        /* ===== 分隔线 ===== */
        .divider {
            height: 1px;
            background: var(--border);
            margin: var(--gap-lg) 0;
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            padding: 16px 0;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--secondary);
        }
        .breadcrumb span {
            color: var(--text-light);
        }
        .breadcrumb i {
            font-size: 0.65rem;
            color: var(--text-muted);
        }

        /* ===== 空状态 ===== */
        .empty-state {
            text-align: center;
            padding: 48px 20px;
            background: var(--bg-card);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
            color: var(--text-muted);
        }
        .empty-state i {
            font-size: 2.4rem;
            margin-bottom: 16px;
            opacity: 0.4;
        }
        .empty-state p {
            font-size: 0.95rem;
        }

        /* ===== 文章页 ===== */
        .article-header {
            background: var(--primary-dark);
            padding: 40px 0 20px;
            border-bottom: 1px solid var(--border);
        }
        .article-header .breadcrumb {
            padding-bottom: 8px;
        }
        .article-header h1 {
            font-size: clamp(1.6rem, 3.5vw, 2.6rem);
            margin-bottom: 12px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .article-meta i {
            margin-right: 4px;
        }
        .article-meta .cat {
            color: var(--secondary);
            font-weight: 500;
        }
        .article-body {
            padding: 40px 0 60px;
        }
        .article-content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-light);
        }
        .article-content p {
            margin-bottom: 1.2rem;
        }
        .article-content h2,
        .article-content h3 {
            margin-top: 1.8rem;
            margin-bottom: 0.8rem;
            color: var(--text);
        }
        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px 0;
            border: 1px solid var(--border);
        }
        .article-content ul,
        .article-content ol {
            padding-left: 24px;
            margin-bottom: 1.2rem;
        }
        .article-content li {
            margin-bottom: 6px;
        }
        .article-content a {
            color: var(--secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content a:hover {
            color: var(--secondary-light);
        }
        .article-content blockquote {
            border-left: 4px solid var(--secondary);
            background: rgba(240, 165, 0, 0.06);
            padding: 16px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-nav a {
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-nav a:hover {
            color: var(--secondary);
        }
        @media (max-width: 520px) {
            .article-nav {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 分类页banner ===== */
        .category-banner {
            background: var(--primary-dark);
            padding: 48px 0 32px;
            border-bottom: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .category-banner::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;
        }
        .category-banner .container {
            position: relative;
            z-index: 2;
        }
        .category-banner h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            margin-bottom: 8px;
        }
        .category-banner p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 600px;
        }

        /* ===== 响应式辅助 ===== */
        @media (max-width: 768px) {
            .section {
                padding: 52px 0;
            }
            .section__header {
                margin-bottom: 32px;
            }
        }
        @media (max-width: 520px) {
            .section {
                padding: 36px 0;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --primary-light: #FF8F5E;
            --primary-bg: #FFF3ED;
            --secondary: #2D3436;
            --secondary-light: #636E72;
            --accent: #00B894;
            --accent-light: #55EFC4;
            --bg: #FFFFFF;
            --bg-alt: #F8F9FA;
            --bg-dark: #1A1A2E;
            --text: #2D3436;
            --text-light: #636E72;
            --text-white: #FFFFFF;
            --border: #E9ECEF;
            --border-light: #F1F3F5;
            --radius: 16px;
            --radius-sm: 8px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-btn: 0 4px 14px rgba(255,107,53,0.25);
            --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-h: 72px;
            --spacing-section: 80px;
            --spacing-block: 60px;
        }

        /* ===== 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: 1.7;
            color: var(--text);
            background: var(--bg);
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; transition: var(--transition); }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input { font-family: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 700; color: var(--text); }
        h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
        h2 { font-size: 2.2rem; letter-spacing: -0.01em; }
        h3 { font-size: 1.4rem; }
        h4 { font-size: 1.15rem; }
        p { color: var(--text-light); margin-bottom: 1rem; }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section { padding: var(--spacing-section) 0; }
        .section__title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section__title h2 { margin-bottom: 12px; }
        .section__title p { max-width: 600px; margin: 0 auto; font-size: 1.1rem; }
        .text-center { text-align: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex; align-items: center; gap: 10px;
            padding: 12px 28px; border-radius: 50px;
            font-size: 0.95rem; font-weight: 600;
            transition: var(--transition); border: 2px solid transparent;
        }
        .btn--primary {
            background: var(--primary); color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn--primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 25px rgba(255,107,53,0.35); }
        .btn--outline {
            background: transparent; color: var(--primary); border-color: var(--primary);
        }
        .btn--outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
        .btn--white {
            background: #fff; color: var(--primary); border-color: #fff;
        }
        .btn--white:hover { background: var(--primary-bg); transform: translateY(-2px); }
        .btn--sm { padding: 8px 20px; font-size: 0.85rem; }

        /* ===== Tags / Badges ===== */
        .tag {
            display: inline-block; padding: 4px 14px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 500; background: var(--primary-bg); color: var(--primary);
        }
        .badge {
            display: inline-flex; align-items: center; gap: 6px;
            padding: 6px 16px; border-radius: 50px;
            font-size: 0.8rem; font-weight: 600; background: var(--primary); color: #fff;
        }

        /* ===== Header ===== */
        .header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            height: var(--header-h); background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border); transition: var(--transition);
        }
        .header .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; gap: 16px;
        }
        .header__logo {
            display: flex; align-items: center; gap: 10px;
            font-size: 1.2rem; font-weight: 800; color: var(--text); white-space: nowrap;
        }
        .header__logo i { color: var(--primary); font-size: 1.4rem; }
        .header__nav {
            display: flex; align-items: center; gap: 4px;
        }
        .header__nav a {
            padding: 8px 18px; border-radius: 50px;
            font-size: 0.9rem; font-weight: 500; color: var(--text-light);
            transition: var(--transition); white-space: nowrap;
        }
        .header__nav a:hover, .header__nav a.active {
            background: var(--primary-bg); color: var(--primary);
        }
        .header__nav a.active { font-weight: 700; }
        .header__actions {
            display: flex; align-items: center; gap: 12px; flex-shrink: 0;
        }
        .header__search {
            display: flex; align-items: center; gap: 8px;
            background: var(--bg-alt); border-radius: 50px;
            padding: 6px 16px; border: 1px solid var(--border);
            transition: var(--transition);
        }
        .header__search:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(255,107,53,0.12); }
        .header__search i { color: var(--text-light); font-size: 0.9rem; }
        .header__search input {
            background: transparent; font-size: 0.9rem; color: var(--text);
            width: 120px; transition: var(--transition);
        }
        .header__search input::placeholder { color: var(--text-light); }
        .header__btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 8px 20px; border-radius: 50px;
            font-size: 0.85rem; font-weight: 600; transition: var(--transition);
            white-space: nowrap;
        }
        .header__btn--outline {
            background: transparent; color: var(--text); border: 2px solid var(--border);
        }
        .header__btn--outline:hover { border-color: var(--primary); color: var(--primary); }
        .header__btn--primary {
            background: var(--primary); color: #fff; box-shadow: var(--shadow-btn);
        }
        .header__btn--primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
        .header__toggle { display: none; font-size: 1.4rem; color: var(--text); padding: 4px; }

        /* ===== Hero (分类页 Banner) ===== */
        .page-hero {
            padding: 120px 0 64px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213E 100%);
            position: relative; overflow: hidden;
            min-height: 320px; display: flex; align-items: center;
        }
        .page-hero::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.12; mix-blend-mode: overlay;
        }
        .page-hero::after {
            content: ''; position: absolute; bottom: 0; left: 0; right: 0;
            height: 80px; background: linear-gradient(to top, var(--bg), transparent);
        }
        .page-hero .container { position: relative; z-index: 2; text-align: center; }
        .page-hero h1 {
            color: var(--text-white); font-size: 3rem; margin-bottom: 16px;
        }
        .page-hero p {
            color: rgba(255,255,255,0.75); font-size: 1.15rem; max-width: 640px;
            margin: 0 auto 24px;
        }
        .page-hero .tag { background: rgba(255,255,255,0.15); color: #fff; }
        .page-hero .breadcrumb {
            display: flex; justify-content: center; gap: 8px; align-items: center;
            color: rgba(255,255,255,0.5); font-size: 0.9rem; margin-bottom: 20px;
        }
        .page-hero .breadcrumb a { color: rgba(255,255,255,0.7); }
        .page-hero .breadcrumb a:hover { color: #fff; }
        .page-hero .breadcrumb span { color: rgba(255,255,255,0.9); }

        /* ===== Guide Categories ===== */
        .guide-cats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: var(--spacing-block);
        }
        .guide-cat__card {
            background: var(--bg); border-radius: var(--radius);
            padding: 28px 20px; text-align: center;
            border: 2px solid var(--border-light);
            transition: var(--transition); cursor: pointer;
        }
        .guide-cat__card:hover {
            border-color: var(--primary); transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .guide-cat__card .icon {
            width: 56px; height: 56px; margin: 0 auto 16px;
            border-radius: 50%; background: var(--primary-bg);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.4rem; color: var(--primary); transition: var(--transition);
        }
        .guide-cat__card:hover .icon { background: var(--primary); color: #fff; }
        .guide-cat__card h4 { font-size: 1.05rem; margin-bottom: 6px; }
        .guide-cat__card p { font-size: 0.85rem; margin-bottom: 0; }

        /* ===== Guide List ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--bg); border-radius: var(--radius);
            overflow: hidden; border: 1px solid var(--border);
            transition: var(--transition);
        }
        .guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
        .guide-card__img {
            width: 100%; height: 200px; object-fit: cover;
            background: var(--bg-alt);
        }
        .guide-card__body { padding: 20px 24px 24px; }
        .guide-card__body .tag { margin-bottom: 10px; }
        .guide-card__body h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .guide-card__body h3 a { color: var(--text); }
        .guide-card__body h3 a:hover { color: var(--primary); }
        .guide-card__body p { font-size: 0.9rem; margin-bottom: 16px; }
        .guide-card__meta {
            display: flex; align-items: center; gap: 16px;
            font-size: 0.8rem; color: var(--text-light); border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }
        .guide-card__meta i { margin-right: 4px; }

        /* ===== Featured Guide (大卡片) ===== */
        .featured-guide {
            display: grid; grid-template-columns: 1fr 1fr;
            gap: 32px; background: var(--bg-alt);
            border-radius: var(--radius-lg); overflow: hidden;
            margin-bottom: var(--spacing-block);
        }
        .featured-guide__img {
            width: 100%; height: 100%; min-height: 320px;
            object-fit: cover; background: var(--border);
        }
        .featured-guide__content {
            padding: 40px 40px 40px 0; display: flex;
            flex-direction: column; justify-content: center;
        }
        .featured-guide__content .badge { margin-bottom: 16px; }
        .featured-guide__content h3 { font-size: 1.8rem; margin-bottom: 16px; }
        .featured-guide__content p { font-size: 1rem; margin-bottom: 20px; }

        /* ===== Stats ===== */
        .stats-row {
            display: grid; grid-template-columns: repeat(4, 1fr);
            gap: 24px; text-align: center;
        }
        .stat-item { padding: 24px; background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); }
        .stat-item .num { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
        .stat-item .label { font-size: 0.9rem; color: var(--text-light); margin-top: 6px; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg); border-radius: var(--radius-sm);
            border: 1px solid var(--border); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--primary-light); }
        .faq-item__q {
            display: flex; justify-content: space-between; align-items: center;
            padding: 18px 24px; font-weight: 600; cursor: pointer;
            font-size: 1rem; color: var(--text); transition: var(--transition);
        }
        .faq-item__q i { color: var(--primary); transition: var(--transition); font-size: 0.9rem; }
        .faq-item.active .faq-item__q i { transform: rotate(180deg); }
        .faq-item__a {
            max-height: 0; overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px; color: var(--text-light); font-size: 0.95rem;
            line-height: 1.7;
        }
        .faq-item.active .faq-item__a {
            max-height: 300px; padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-block {
            background: linear-gradient(135deg, var(--primary) 0%, #FF8F5E 100%);
            border-radius: var(--radius-lg); padding: 56px 48px;
            text-align: center; color: #fff;
            position: relative; overflow: hidden;
        }
        .cta-block::before {
            content: ''; position: absolute; inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08; mix-blend-mode: overlay;
        }
        .cta-block .container { position: relative; z-index: 2; }
        .cta-block h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }
        .cta-block p { color: rgba(255,255,255,0.85); font-size: 1.05rem; margin-bottom: 24px; }
        .cta-block .btn--white:hover { box-shadow: 0 8px 30px rgba(0,0,0,0.15); }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark); color: rgba(255,255,255,0.7);
            padding: 56px 0 32px; margin-top: var(--spacing-section);
        }
        .footer__grid {
            display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px; margin-bottom: 40px;
        }
        .footer__brand .header__logo { color: #fff; margin-bottom: 16px; }
        .footer__brand p { font-size: 0.9rem; line-height: 1.8; color: rgba(255,255,255,0.55); }
        .footer__col h4 { color: #fff; font-size: 1rem; margin-bottom: 18px; }
        .footer__col a {
            display: block; color: rgba(255,255,255,0.55); font-size: 0.9rem;
            padding: 4px 0; transition: var(--transition);
        }
        .footer__col a:hover { color: var(--primary); padding-left: 4px; }
        .footer__bottom {
            display: flex; justify-content: space-between; align-items: center;
            border-top: 1px solid rgba(255,255,255,0.08); padding-top: 24px;
            font-size: 0.85rem;
        }
        .footer__social { display: flex; gap: 16px; }
        .footer__social a {
            width: 36px; height: 36px; border-radius: 50%;
            background: rgba(255,255,255,0.06); display: flex;
            align-items: center; justify-content: center;
            color: rgba(255,255,255,0.5); transition: var(--transition);
            font-size: 1rem;
        }
        .footer__social a:hover { background: var(--primary); color: #fff; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid { grid-template-columns: repeat(2, 1fr); }
            .guide-cats { grid-template-columns: repeat(2, 1fr); }
            .stats-row { grid-template-columns: repeat(2, 1fr); }
            .featured-guide { grid-template-columns: 1fr; }
            .featured-guide__content { padding: 24px 32px 32px; }
            .featured-guide__img { min-height: 240px; }
            .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            :root { --spacing-section: 48px; --header-h: 64px; }
            h1 { font-size: 2rem; }
            h2 { font-size: 1.6rem; }
            .page-hero h1 { font-size: 2rem; }
            .header__nav { display: none; }
            .header__nav.open {
                display: flex; flex-direction: column; position: absolute;
                top: var(--header-h); left: 0; right: 0; background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px); padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border); gap: 4px;
            }
            .header__nav.open a { width: 100%; text-align: center; padding: 12px; }
            .header__search input { width: 80px; }
            .header__btn--outline, .header__btn--primary { display: none; }
            .header__toggle { display: block; }
            .guide-grid { grid-template-columns: 1fr; }
            .guide-cats { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stats-row { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-item { padding: 16px; }
            .stat-item .num { font-size: 1.8rem; }
            .footer__grid { grid-template-columns: 1fr; gap: 24px; }
            .footer__bottom { flex-direction: column; gap: 12px; text-align: center; }
            .cta-block { padding: 36px 24px; }
            .cta-block h2 { font-size: 1.5rem; }
            .featured-guide__content { padding: 20px 24px 28px; }
            .featured-guide__content h3 { font-size: 1.4rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .guide-cats { grid-template-columns: 1fr; }
            .stats-row { grid-template-columns: 1fr 1fr; }
            .page-hero { min-height: 240px; padding: 100px 0 40px; }
            .page-hero h1 { font-size: 1.6rem; }
            .header__search input { width: 60px; }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --secondary: #fd79a8;
            --accent: #00cec9;
            --bg: #0f0e17;
            --bg-card: #1a1932;
            --bg-card-hover: #232046;
            --bg-elevated: #2a274a;
            --text: #f0f0f5;
            --text-muted: #9d97b8;
            --text-soft: #c8c3e0;
            --border: #2e2b50;
            --border-light: #3d3970;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 8px 32px rgba(0,0,0,0.5);
            --shadow-sm: 0 4px 16px rgba(0,0,0,0.3);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Segoe UI', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== 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);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: #fff; }
        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; background: none; color: var(--text); }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: #fff; }
        p { margin-bottom: 1rem; color: var(--text-soft); }
        ::selection { background: var(--primary); color: #fff; }
        :focus-visible { outline: 2px solid var(--primary-light); outline-offset: 2px; border-radius: var(--radius-xs); }

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

        /* ===== 头部导航 ===== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(15, 14, 23, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .header__logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }
        .header__logo i { color: var(--secondary); font-size: 1.5rem; }
        .header__logo span { background: linear-gradient(135deg, #fff, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .header__nav {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .header__nav a {
            padding: 8px 18px;
            border-radius: 100px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            transition: var(--transition);
            white-space: nowrap;
        }
        .header__nav a:hover { color: #fff; background: rgba(108, 92, 231, 0.15); }
        .header__nav a.active { color: #fff; background: var(--primary); box-shadow: 0 4px 16px rgba(108, 92, 231, 0.4); }
        .header__actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .header__search {
            display: flex;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 100px;
            padding: 0 14px;
            transition: var(--transition);
        }
        .header__search:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2); }
        .header__search i { color: var(--text-muted); font-size: 0.9rem; }
        .header__search input { padding: 8px 10px; min-width: 120px; background: transparent; color: var(--text); font-size: 0.85rem; }
        .header__search input::placeholder { color: var(--text-muted); }
        .header__btn {
            padding: 8px 20px;
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .header__btn--outline {
            border: 1px solid var(--border-light);
            color: var(--text-soft);
            background: transparent;
        }
        .header__btn--outline:hover { border-color: var(--primary); color: #fff; background: rgba(108, 92, 231, 0.1); }
        .header__btn--primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
        }
        .header__btn--primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(108, 92, 231, 0.45); }
        .header__toggle { display: none; font-size: 1.4rem; color: var(--text); cursor: pointer; padding: 4px; }

        /* ===== 文章 Banner ===== */
        .article-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, rgba(108, 92, 231, 0.12), rgba(253, 121, 168, 0.08));
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .article-banner .container {
            position: relative;
            z-index: 1;
            max-width: 860px;
        }
        .article-banner__breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-banner__breadcrumb a { color: var(--text-muted); }
        .article-banner__breadcrumb a:hover { color: #fff; }
        .article-banner__breadcrumb span { color: var(--text-soft); }
        .article-banner__category {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 100px;
            background: rgba(108, 92, 231, 0.2);
            color: var(--primary-light);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(108, 92, 231, 0.15);
        }
        .article-banner h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-banner__meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-banner__meta i { margin-right: 6px; color: var(--primary-light); }
        .article-banner__meta span { display: flex; align-items: center; }

        /* ===== 文章主体 ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-main .container {
            max-width: 860px;
        }
        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 48px 56px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .article-body .featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .article-body .featured-image img {
            width: 100%;
            max-height: 480px;
            object-fit: cover;
        }
        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--text-soft);
        }
        .article-body .content p {
            margin-bottom: 1.4rem;
        }
        .article-body .content h2, .article-body .content h3 {
            margin-top: 2rem;
            margin-bottom: 1rem;
            color: #fff;
        }
        .article-body .content h2 { font-size: 1.6rem; }
        .article-body .content h3 { font-size: 1.25rem; }
        .article-body .content ul, .article-body .content ol {
            padding-left: 1.5rem;
            margin-bottom: 1.4rem;
        }
        .article-body .content ul li { list-style: disc; margin-bottom: 0.5rem; color: var(--text-soft); }
        .article-body .content ol li { list-style: decimal; margin-bottom: 0.5rem; color: var(--text-soft); }
        .article-body .content blockquote {
            border-left: 4px solid var(--primary);
            padding: 16px 24px;
            margin: 1.6rem 0;
            background: rgba(108, 92, 231, 0.08);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-soft);
        }
        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 1.6rem 0;
            box-shadow: var(--shadow-sm);
        }
        .article-body .content a { color: var(--primary-light); text-decoration: underline; }
        .article-body .content a:hover { color: #fff; }
        .article-body .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }
        .article-body .tags span {
            padding: 6px 16px;
            border-radius: 100px;
            background: rgba(108, 92, 231, 0.1);
            color: var(--primary-light);
            font-size: 0.82rem;
            font-weight: 500;
            border: 1px solid rgba(108, 92, 231, 0.08);
            transition: var(--transition);
        }
        .article-body .tags span:hover { background: rgba(108, 92, 231, 0.2); }
        .article-body .share-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .article-body .share-bar span { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
        .article-body .share-bar a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-elevated);
            color: var(--text-muted);
            font-size: 1.1rem;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .article-body .share-bar a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-3px); }

        /* ===== 文章未找到 ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 40px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border);
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box h2 { font-size: 1.8rem; margin-bottom: 16px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 28px; }
        .not-found-box .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: 100px;
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-back:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(108, 92, 231, 0.4); }

        /* ===== 相关推荐 ===== */
        .related-section {
            padding: 0 0 60px;
        }
        .related-section .container { max-width: 860px; }
        .related-section h2 {
            font-size: 1.6rem;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section h2 i { color: var(--secondary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 20px 22px;
            transition: var(--transition);
            cursor: pointer;
        }
        .related-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-sm); }
        .related-card .cat-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 100px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(108, 92, 231, 0.15);
            color: var(--primary-light);
            margin-bottom: 10px;
        }
        .related-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; color: #fff; line-height: 1.4; }
        .related-card p { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .related-card .meta { font-size: 0.78rem; color: var(--text-muted); margin-top: 12px; display: flex; align-items: center; gap: 12px; }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--bg-card);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        .footer__grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer__brand .header__logo { font-size: 1.1rem; margin-bottom: 16px; display: inline-flex; }
        .footer__brand p { font-size: 0.9rem; color: var(--text-muted); max-width: 320px; line-height: 1.7; }
        .footer__col h4 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 18px; letter-spacing: 0.5px; }
        .footer__col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            padding: 5px 0;
            transition: var(--transition);
        }
        .footer__col a:hover { color: #fff; padding-left: 6px; }
        .footer__bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer__social { display: flex; gap: 12px; }
        .footer__social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-elevated);
            color: var(--text-muted);
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border);
        }
        .footer__social a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-3px); }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer__grid { grid-template-columns: 1fr 1fr; gap: 30px; }
            .article-body { padding: 36px 32px; }
            .article-banner h1 { font-size: 2rem; }
        }
        @media (max-width: 768px) {
            .header__nav { display: none; flex-direction: column; width: 100%; background: var(--bg-card); position: absolute; top: var(--nav-height); left: 0; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
            .header__nav.open { display: flex; }
            .header__nav a { width: 100%; padding: 12px 16px; }
            .header__search { display: none; }
            .header__btn { display: none; }
            .header__btn--primary { display: inline-flex; }
            .header__toggle { display: block; }
            .header .container { flex-wrap: wrap; }
            .article-banner { padding: 48px 0 40px; }
            .article-banner h1 { font-size: 1.6rem; }
            .article-body { padding: 24px 18px; }
            .article-body .content { font-size: 0.98rem; }
            .related-grid { grid-template-columns: 1fr 1fr; }
            .footer__grid { grid-template-columns: 1fr; gap: 24px; }
            .footer__bottom { flex-direction: column; text-align: center; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .article-banner h1 { font-size: 1.35rem; }
            .article-body { padding: 16px 12px; border-radius: var(--radius-sm); }
            .related-grid { grid-template-columns: 1fr; }
            .header__logo { font-size: 1rem; }
            .header__logo i { font-size: 1.2rem; }
            .header__btn--primary { padding: 6px 14px; font-size: 0.78rem; }
        }