/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
        --primary: #FF4D1C;
        --primary-hover: #E63A0C;
        --primary-grad-start: #FF6A00;
        --primary-grad-end: #FF2D1F;
        --amber: #FFB020;
        --teal: #2DE1C2;
        --bg-deep: #0B101B;
        --bg-card: #121A29;
        --bg-card-border: rgba(255,255,255,0.08);
        --text-main: #F2F5F9;
        --text-secondary: #B0BAC9;
        --text-muted: #768096;
        --border-line: rgba(255,255,255,0.08);
        --radius-card: 12px;
        --radius-btn: 8px;
        --radius-pill: 999px;
        --shadow-card: 0 8px 30px rgba(0,0,0,0.30);
        --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.45);
        --shadow-btn: 0 4px 20px rgba(255,77,28,0.25);
        --shadow-btn-hover: 0 6px 24px rgba(255,77,28,0.40);
        --font-num: 'Orbitron', sans-serif;
        --font-cn: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        --nav-h: 72px;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
        font-family: var(--font-cn);
        background-color: var(--bg-deep);
        color: var(--text-main);
        line-height: 1.7;
        overflow-x: hidden;
        -webkit-font-smoothing: antialiased;
    }
    a { text-decoration: none; color: inherit; transition: color .25s ease; }
    img { max-width: 100%; height: auto; display: block; }
    button, input, select, textarea { font-family: inherit; font-size: 1rem; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.3; }

    /* 数字字体 */
    .num { font-family: var(--font-num); letter-spacing: .05em; }

    /* ===== 容器 ===== */
    .container { max-width: 1200px; padding-left: 1rem; padding-right: 1rem; }

    /* ===== 顶部渐变线 ===== */
    .top-gradient {
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255,77,28,0.6), transparent);
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 1050;
    }

    /* ===== 导航 ===== */
    .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        height: var(--nav-h);
        background: transparent;
        z-index: 1040;
        transition: background .3s ease, box-shadow .3s ease, backdrop-filter .3s ease;
    }
    .site-header.scrolled {
        background: rgba(11,16,27,0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        box-shadow: 0 1px 0 rgba(255,255,255,0.04);
    }
    .navbar {
        height: var(--nav-h);
        padding-top: 0; padding-bottom: 0;
    }
    .navbar .container {
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .brand {
        display: inline-flex;
        align-items: center;
        gap: 0.6rem;
        font-size: 1.25rem;
        font-weight: 800;
        color: var(--text-main);
        letter-spacing: 0.02em;
    }
    .brand-icon {
        width: 32px; height: 32px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
    }
    .brand-text { white-space: nowrap; }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 2rem;
        list-style: none;
        margin: 0; padding: 0;
    }
    .nav-links a {
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-secondary);
        padding: 0.25rem 0;
        position: relative;
        transition: color .25s ease;
    }
    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -2px; left: 0;
        width: 100%; height: 2px;
        background: linear-gradient(90deg, var(--primary-grad-start), var(--primary-grad-end));
        border-radius: 2px;
        transform: scaleX(0);
        transform-origin: left;
        transition: transform .25s ease;
    }
    .nav-links a:hover { color: #fff; }
    .nav-links a:hover::after { transform: scaleX(1); }
    .nav-links a.active { color: #fff; }
    .nav-links a.active::after { transform: scaleX(1); }
    .nav-cta {
        margin-left: 0.5rem;
    }
    .btn-ghost-nav {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.25);
        color: #fff;
        padding: 0.5rem 1.5rem;
        border-radius: var(--radius-btn);
        font-weight: 500;
        font-size: 0.9rem;
        transition: all .25s ease;
    }
    .btn-ghost-nav:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(255,77,28,0.08);
    }
    .navbar-toggler, .navbar-toggler:focus {
        border: 1px solid var(--border-line);
        background: rgba(255,255,255,0.04);
        border-radius: 8px;
        padding: 0.4rem 0.6rem;
        box-shadow: none;
        outline: none;
    }
    .navbar-toggler-icon {
        width: 22px; height: 2px;
        background: var(--text-main);
        position: relative;
        display: block;
        border-radius: 2px;
    }
    .navbar-toggler-icon::before,
    .navbar-toggler-icon::after {
        content: '';
        position: absolute;
        left: 0; width: 100%; height: 2px;
        background: var(--text-main);
        border-radius: 2px;
    }
    .navbar-toggler-icon::before { top: -7px; }
    .navbar-toggler-icon::after { top: 7px; }
    @media (max-width: 991.98px) {
        .navbar-collapse {
            background: var(--bg-deep);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            padding: 1rem 1.25rem;
            margin-top: 0.5rem;
            box-shadow: var(--shadow-card);
        }
        .nav-links {
            flex-direction: column;
            align-items: flex-start;
            gap: 0;
            width: 100%;
        }
        .nav-links li { width: 100%; border-bottom: 1px solid rgba(255,255,255,0.06); }
        .nav-links li:last-child { border-bottom: none; }
        .nav-links a {
            display: block;
            padding: 0.75rem 0;
            font-size: 1rem;
            width: 100%;
        }
        .nav-links a::after { display: none; }
        .nav-cta { margin-left: 0; margin-top: 0.75rem; width: 100%; }
        .nav-cta .btn-ghost-nav { width: 100%; text-align: center; }
    }

    /* ===== 按钮 ===== */
    .btn-primary-custom {
        background: linear-gradient(135deg, var(--primary-grad-start), var(--primary-grad-end));
        color: #fff;
        border: none;
        padding: 0.75rem 2rem;
        border-radius: var(--radius-btn);
        font-weight: 700;
        font-size: 1rem;
        cursor: pointer;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.4rem;
        box-shadow: var(--shadow-btn);
        transition: all .25s ease;
        outline: none;
    }
    .btn-primary-custom:hover {
        filter: brightness(1.1);
        transform: translateY(-2px);
        box-shadow: var(--shadow-btn-hover);
        color: #fff;
    }
    .btn-primary-custom:active {
        transform: translateY(0px);
        box-shadow: 0 2px 8px rgba(255,77,28,0.3);
    }
    .btn-primary-custom:focus-visible,
    .btn-ghost-custom:focus-visible,
    a:focus-visible {
        outline: 2px solid var(--amber);
        outline-offset: 2px;
    }
    .btn-ghost-custom {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.25);
        color: #fff;
        padding: 0.75rem 2rem;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 1rem;
        cursor: pointer;
        transition: all .25s ease;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.4rem;
        outline: none;
    }
    .btn-ghost-custom:hover {
        border-color: var(--primary);
        background: rgba(255,77,28,0.08);
        color: #fff;
        transform: translateY(-2px);
    }
    .btn-outline-custom {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.25);
        color: var(--text-main);
        padding: 0.75rem 2rem;
        border-radius: var(--radius-btn);
        font-weight: 600;
        font-size: 1rem;
        cursor: pointer;
        transition: all .25s ease;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.4rem;
        outline: none;
    }
    .btn-outline-custom:hover {
        border-color: var(--primary);
        color: var(--primary);
        background: rgba(255,77,28,0.08);
    }
    .btn-text-arrow {
        display: inline-flex;
        align-items: center;
        gap: 0.35rem;
        color: var(--primary);
        font-weight: 600;
        font-size: 0.9rem;
        background: none;
        border: none;
        padding: 0;
        cursor: pointer;
        transition: gap .25s ease;
        outline: none;
    }
    .btn-text-arrow:hover { gap: 0.75rem; color: var(--primary-hover); }

    /* ===== Hero ===== */
    .hero {
        min-height: 85vh;
        position: relative;
        display: flex;
        align-items: center;
        padding: 7rem 0 4rem;
        background-color: var(--bg-deep);
        overflow: hidden;
    }
    .hero-bg {
        position: absolute;
        inset: 0;
        background-image: url('/assets/images/backpic/back-1.webp');
        background-size: cover;
        background-position: center;
        z-index: 0;
    }
    .hero-bg::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(11,16,27,0.55) 0%, rgba(11,16,27,0.75) 60%, var(--bg-deep) 100%);
    }
    .hero-glow {
        position: absolute;
        width: 600px; height: 600px;
        background: radial-gradient(circle, rgba(255,77,28,0.18) 0%, transparent 70%);
        top: -100px; right: -100px;
        z-index: 1;
        pointer-events: none;
    }
    .hero-grid {
        position: absolute;
        inset: 0;
        background-image: linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
                          linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
        background-size: 60px 60px;
        z-index: 1;
        pointer-events: none;
    }
    .hero-content {
        position: relative;
        z-index: 2;
        max-width: 780px;
    }
    .hero h1 {
        font-size: clamp(2.25rem, 5.5vw, 4rem);
        font-weight: 900;
        line-height: 1.2;
        color: var(--text-main);
        margin-bottom: 1.5rem;
        letter-spacing: 0.02em;
    }
    .hero h1 .highlight {
        color: var(--primary);
    }
    .hero-sub {
        font-size: 1.125rem;
        color: var(--text-secondary);
        margin-bottom: 2rem;
        line-height: 1.6;
        max-width: 640px;
    }
    .hero-ctas {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        margin-bottom: 3rem;
    }
    .hero-stats {
        display: flex;
        flex-wrap: wrap;
        gap: 2.5rem 3.5rem;
        border-top: 1px solid var(--border-line);
        padding-top: 1.75rem;
        max-width: 720px;
    }
    .hero-stat .num {
        font-size: 2rem;
        font-weight: 700;
        color: var(--amber);
        line-height: 1.2;
    }
    .hero-stat:nth-child(even) .num { color: var(--text-main); }
    .hero-stat .label {
        font-size: 0.825rem;
        color: var(--text-muted);
        margin-top: 0.25rem;
    }
    @media (max-width: 767.98px) {
        .hero { padding: 6rem 0 3rem; min-height: 90vh; }
        .hero-stats { gap: 1.5rem 2rem; display: grid; grid-template-columns: 1fr 1fr; }
        .hero-stat .num { font-size: 1.6rem; }
        .hero-ctas .btn-primary-custom, .hero-ctas .btn-ghost-custom { width: 100%; }
    }

    /* ===== 通用板块 ===== */
    .section { padding: clamp(4rem, 8vw, 7rem) 0; }
    .section-alt { background: var(--bg-deep); }
    .section-header {
        margin-bottom: 3rem;
        max-width: 680px;
    }
    .section-header.center { margin-left: auto; margin-right: auto; text-align: center; }
    .section-header .tag {
        font-size: 0.8rem;
        font-weight: 600;
        letter-spacing: 0.08em;
        color: var(--amber);
        text-transform: uppercase;
        margin-bottom: 0.5rem;
        display: block;
    }
    .section-header h2 {
        font-size: clamp(1.75rem, 3vw, 2.5rem);
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 0.75rem;
    }
    .section-divider {
        width: 24px; height: 2px;
        background: linear-gradient(90deg, var(--primary-grad-start), var(--primary-grad-end));
        border-radius: 2px;
        margin-bottom: 1.25rem;
    }
    .section-header.center .section-divider { margin-left: auto; margin-right: auto; }
    .section-desc {
        color: var(--text-secondary);
        font-size: 1rem;
        line-height: 1.7;
        margin-bottom: 0;
    }

    /* ===== 三步流程 ===== */
    .steps-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
        position: relative;
    }
    .step-card {
        background: transparent;
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: var(--radius-card);
        padding: 2.5rem 2rem;
        position: relative;
        transition: all .3s ease;
        height: 100%;
    }
    .step-card:hover {
        border-color: var(--primary);
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
    }
    .step-number {
        font-family: var(--font-num);
        font-size: 3rem;
        font-weight: 700;
        color: rgba(255,77,28,0.5);
        line-height: 1;
        display: block;
        margin-bottom: 1.5rem;
    }
    .step-icon {
        width: 40px; height: 40px;
        border: 1px solid rgba(255,255,255,0.2);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 1.25rem;
        color: var(--text-secondary);
        transition: all .3s ease;
    }
    .step-card:hover .step-icon {
        border-color: var(--primary);
        color: var(--primary);
    }
    .step-card h3 {
        font-size: 1.125rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 0.75rem;
    }
    .step-card p {
        color: var(--text-secondary);
        font-size: 0.925rem;
        line-height: 1.7;
        margin-bottom: 0;
    }
    .step-arrow {
        position: absolute;
        top: 50%;
        right: -2rem;
        transform: translateY(-50%);
        width: 1.5rem;
        border-top: 1px dashed rgba(255,255,255,0.15);
        z-index: 2;
        pointer-events: none;
    }
    @media (max-width: 991.98px) {
        .steps-grid { grid-template-columns: repeat(2, 1fr); }
        .step-card:last-child { grid-column: 1 / -1; max-width: 100%; }
        .step-arrow { display: none; }
    }
    @media (max-width: 575.98px) {
        .steps-grid { grid-template-columns: 1fr; }
        .step-card:last-child { grid-column: auto; }
        .step-card { padding: 2rem 1.5rem; }
    }

    /* ===== 案例卡片 ===== */
    .case-main-grid {
        display: grid;
        grid-template-columns: 1.2fr 1fr;
        gap: 1.5rem;
        align-items: stretch;
    }
    .case-main-card {
        background: var(--bg-card);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-card);
        overflow: hidden;
        transition: all .3s ease;
        box-shadow: var(--shadow-card);
    }
    .case-main-card:hover {
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(255,77,28,0.25);
        transform: translateY(-4px);
    }
    .case-cover {
        overflow: hidden;
        border-radius: 12px 12px 0 0;
    }
    .case-cover img {
        width: 100%;
        aspect-ratio: 16 / 9;
        object-fit: cover;
        transition: transform .3s ease;
    }
    .case-main-card:hover .case-cover img { transform: scale(1.03); }
    .case-body { padding: 1.75rem; }
    .case-body h3 {
        font-size: 1.25rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 0.5rem;
    }
    .case-body p {
        color: var(--text-secondary);
        font-size: 0.925rem;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 1.25rem;
    }
    .case-data {
        display: flex;
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    .case-data-item .num {
        font-size: 1.3rem;
        font-weight: 700;
        color: var(--primary);
        font-family: var(--font-num);
    }
    .case-data-item .num.amber { color: var(--amber); }
    .case-data-item .label {
        font-size: 0.75rem;
        color: var(--text-muted);
        display: block;
        margin-top: 0.1rem;
    }
    .case-side {
        display: grid;
        grid-template-rows: 1fr 1fr;
        gap: 1.5rem;
    }
    .case-small-card {
        background: var(--bg-card);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-card);
        padding: 1.25rem;
        display: flex;
        align-items: center;
        gap: 1.25rem;
        transition: all .3s ease;
        box-shadow: var(--shadow-card);
    }
    .case-small-card:hover {
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(255,77,28,0.25);
        transform: translateY(-4px);
    }
    .case-small-cover {
        width: 96px;
        flex-shrink: 0;
    }
    .case-small-cover img {
        width: 96px; height: 96px;
        object-fit: cover;
        border-radius: 8px;
    }
    .case-small-body h4 {
        font-size: 1rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 0.35rem;
    }
    .case-small-body .case-data {
        gap: 0.75rem;
    }
    .case-small-body .case-data-item .num { font-size: 1.1rem; }
    @media (max-width: 991.98px) {
        .case-main-grid { grid-template-columns: 1fr; }
        .case-side { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr; }
    }
    @media (max-width: 767.98px) {
        .case-side { grid-template-columns: 1fr; }
        .case-small-card { padding: 1rem; }
        .case-small-cover, .case-small-cover img { width: 72px; height: 72px; }
        .case-body { padding: 1.25rem; }
    }

    /* ===== 标签 / 徽章 ===== */
    .badge-custom {
        display: inline-block;
        background: rgba(255,176,32,0.12);
        color: var(--amber);
        border-radius: var(--radius-pill);
        padding: 0.25rem 0.75rem;
        font-size: 0.75rem;
        font-weight: 500;
        line-height: 1.5;
    }
    .badge-outline {
        display: inline-block;
        border: 1px solid rgba(255,255,255,0.2);
        color: var(--text-secondary);
        border-radius: var(--radius-pill);
        padding: 0.125rem 0.625rem;
        font-size: 0.7rem;
        font-weight: 500;
        line-height: 1.5;
        transition: all .25s ease;
    }
    .badge-outline:hover { border-color: var(--primary); color: var(--primary); }

    /* ===== FAQ ===== */
    .faq-section { background: var(--bg-deep); }
    .faq-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 3rem;
        align-items: start;
    }
    .accordion-custom {
        --bs-accordion-bg: transparent;
        --bs-accordion-border-color: rgba(255,255,255,0.08);
        --bs-accordion-btn-bg: transparent;
        --bs-accordion-active-bg: transparent;
        --bs-accordion-btn-color: var(--text-main);
        --bs-accordion-active-color: var(--text-main);
        --bs-accordion-btn-focus-box-shadow: 0 0 0 3px rgba(255,77,28,0.15);
        --bs-accordion-border-radius: var(--radius-card);
    }
    .accordion-custom .accordion-item {
        background-color: transparent;
        border: 1px solid rgba(255,255,255,0.08);
        border-radius: var(--radius-card) !important;
        margin-bottom: 0.75rem;
        overflow: hidden;
        transition: border-color .25s ease;
    }
    .accordion-custom .accordion-item:hover { border-color: rgba(255,77,28,0.3); }
    .accordion-custom .accordion-item:has(.accordion-button:not(.collapsed)) {
        border-left: 3px solid var(--primary);
        background-color: rgba(255,77,28,0.04);
    }
    .accordion-custom .accordion-button {
        background-color: transparent;
        color: var(--text-main);
        font-weight: 600;
        font-size: 1rem;
        padding: 1.25rem;
        box-shadow: none;
    }
    .accordion-custom .accordion-button:not(.collapsed) {
        background-color: rgba(255,77,28,0.04);
        color: #fff;
    }
    .accordion-custom .accordion-button::after {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FFB020'%3E%3Cpath fill-rule='evenodd' d='M8 1a.75.75 0 0 1 .75.75v5.5h5.5a.75.75 0 0 1 0 1.5h-5.5v5.5a.75.75 0 0 1-1.5 0v-5.5h-5.5a.75.75 0 0 1 0-1.5h5.5v-5.5A.75.75 0 0 1 8 1Z'/%3E%3C/svg%3E");
        transition: transform .25s ease;
    }
    .accordion-custom .accordion-button:not(.collapsed)::after {
        transform: rotate(45deg);
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23FF4D1C'%3E%3Cpath fill-rule='evenodd' d='M8 1a.75.75 0 0 1 .75.75v5.5h5.5a.75.75 0 0 1 0 1.5h-5.5v5.5a.75.75 0 0 1-1.5 0v-5.5h-5.5a.75.75 0 0 1 0-1.5h5.5v-5.5A.75.75 0 0 1 8 1Z'/%3E%3C/svg%3E");
    }
    .accordion-custom .accordion-body {
        background-color: transparent;
        color: var(--text-secondary);
        font-size: 0.95rem;
        line-height: 1.7;
        padding: 0 1.25rem 1.25rem;
        border-top: 1px solid rgba(255,255,255,0.04);
    }
    .faq-side-card {
        background: var(--bg-card);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-card);
        padding: 1.75rem;
        box-shadow: var(--shadow-card);
    }
    .faq-side-card .icon-circle {
        width: 40px; height: 40px;
        border-radius: 50%;
        background: rgba(255,77,28,0.1);
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        margin-bottom: 1rem;
    }
    .faq-side-card h4 {
        font-size: 1.1rem;
        font-weight: 700;
        margin-bottom: 0.6rem;
    }
    .faq-side-card p {
        font-size: 0.85rem;
        color: var(--text-secondary);
        margin-bottom: 1.2rem;
        line-height: 1.6;
    }
    @media (max-width: 991.98px) {
        .faq-layout { grid-template-columns: 1fr; gap: 2rem; }
    }

    /* ===== 资讯卡片 ===== */
    .news-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 1.5rem;
    }
    .news-card {
        background: var(--bg-card);
        border: 1px solid var(--border-line);
        border-radius: var(--radius-card);
        padding: 1.5rem;
        display: flex;
        flex-direction: column;
        transition: all .3s ease;
        box-shadow: var(--shadow-card);
    }
    .news-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-card-hover);
        border-color: rgba(255,77,28,0.25);
    }
    .news-card .badge-custom { align-self: flex-start; margin-bottom: 0.75rem; }
    .news-card h3 {
        font-size: 1.0625rem;
        font-weight: 700;
        color: var(--text-main);
        line-height: 1.4;
        margin-bottom: 0.5rem;
        transition: color .25s ease;
    }
    .news-card h3 a { color: inherit; }
    .news-card h3 a:hover { color: var(--primary); }
    .news-card .news-excerpt {
        font-size: 0.9rem;
        color: var(--text-muted);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 1rem;
        flex: 1;
    }
    .news-card .news-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-top: 1px solid rgba(255,255,255,0.04);
        padding-top: 1rem;
    }
    .news-meta .time {
        font-family: var(--font-num);
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .news-meta .read-more {
        font-size: 0.8rem;
        color: var(--text-secondary);
        display: inline-flex;
        align-items: center;
        gap: 0.25rem;
        transition: all .25s ease;
    }
    .news-meta .read-more:hover { color: var(--primary); }
    .news-empty {
        text-align: center;
        padding: 3rem 0;
        color: var(--text-muted);
    }
    .news-empty svg { margin-bottom: 1rem; opacity: 0.3; }
    .news-empty p { font-size: 0.95rem; }
    @media (max-width: 991.98px) {
        .news-grid { grid-template-columns: repeat(2, 1fr); }
    }
    @media (max-width: 575.98px) {
        .news-grid { grid-template-columns: 1fr; }
    }

    /* ===== CTA 表单 ===== */
    .cta-banner {
        position: relative;
        border-radius: 16px;
        background: var(--bg-card);
        border: 1px solid rgba(255,77,28,0.3);
        padding: clamp(2.5rem, 5vw, 4rem);
        overflow: hidden;
        box-shadow: var(--shadow-card);
    }
    .cta-banner::before {
        content: '';
        position: absolute;
        bottom: 0; left: 0; right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--primary-grad-start), var(--primary-grad-end));
    }
    .cta-banner::after {
        content: '';
        position: absolute;
        width: 300px; height: 300px;
        background: radial-gradient(circle, rgba(255,77,28,0.10) 0%, transparent 70%);
        top: -100px; right: -100px;
        pointer-events: none;
    }
    .cta-banner .container {
        position: relative;
        z-index: 1;
        padding: 0;
    }
    .cta-title {
        font-size: clamp(1.75rem, 3vw, 2.5rem);
        font-weight: 800;
        color: var(--text-main);
        margin-bottom: 0.75rem;
    }
    .cta-sub {
        color: var(--text-secondary);
        font-size: 1rem;
        margin-bottom: 2rem;
        max-width: 560px;
    }
    .cta-form-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
        max-width: 720px;
    }
    .form-group label {
        display: block;
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 0.4rem;
    }
    .form-group input,
    .form-group select {
        width: 100%;
        background: rgba(255,255,255,0.04);
        border: 1px solid rgba(255,255,255,0.12);
        border-radius: 8px;
        padding: 0.75rem 1rem;
        color: var(--text-main);
        transition: all .25s ease;
        outline: none;
        appearance: none;
        -webkit-appearance: none;
    }
    .form-group input::placeholder { color: rgba(255,255,255,0.2); }
    .form-group select {
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23768096'%3E%3Cpath d='M4 6l4 4 4-4H4z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 0.75rem center;
        background-size: 12px;
    }
    .form-group select option { background: var(--bg-deep); color: var(--text-main); }
    .form-group input:focus,
    .form-group select:focus {
        border-color: var(--primary);
        background: rgba(255,255,255,0.06);
        box-shadow: 0 0 0 3px rgba(255,77,28,0.15);
        color: var(--text-main);
    }
    .cta-form-grid .form-submit { display: flex; align-items: center; justify-content: flex-start; }
    .cta-form-grid .form-submit .btn-primary-custom { width: 100%; margin-top: 1.1rem; }
    @media (max-width: 767.98px) {
        .cta-form-grid { grid-template-columns: 1fr; }
        .cta-form-grid .form-submit .btn-primary-custom { width: 100%; }
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: #080C14;
        border-top: 1px solid rgba(255,255,255,0.04);
        position: relative;
        margin-top: 0;
    }
    .site-footer::before {
        content: '';
        position: absolute;
        top: -1px; left: 0; right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(255,77,28,0.6), transparent);
    }
    .footer-top { padding: 4rem 0 2rem; }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
        gap: 2.5rem;
    }
    .footer-col .brand { margin-bottom: 1rem; }
    .footer-desc {
        font-size: 0.875rem;
        color: var(--text-muted);
        line-height: 1.6;
        max-width: 240px;
    }
    .footer-col h4 {
        font-size: 0.9rem;
        font-weight: 700;
        color: var(--text-main);
        margin-bottom: 1.25rem;
        letter-spacing: 0.04em;
    }
    .footer-links {
        list-style: none;
        padding: 0; margin: 0;
    }
    .footer-links li { margin-bottom: 0.5rem; }
    .footer-links a {
        font-size: 0.875rem;
        color: var(--text-secondary);
        transition: color .25s ease;
    }
    .footer-links a:hover { color: var(--primary); }
    .footer-contact { list-style: none; padding: 0; margin: 0; }
    .footer-contact li {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.85rem;
        color: var(--text-muted);
        margin-bottom: 0.75rem;
    }
    .footer-contact svg { flex-shrink: 0; color: var(--text-muted); }
    .footer-contact a { color: inherit; }
    .footer-contact a:hover { color: var(--primary); }
    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.06);
        padding: 1.5rem 0 2rem;
    }
    .footer-bottom .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 0.75rem;
    }
    .copyright {
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    .copyright .site-name { color: var(--text-secondary); }
    .footer-beian {
        font-size: 0.8rem;
        color: var(--text-muted);
    }
    @media (max-width: 991.98px) {
        .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 575.98px) {
        .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
        .footer-bottom .container { flex-direction: column; text-align: center; }
    }

/* roulang page: category1 */
:root {
  --primary: #FF4D1C;
  --primary-hover: #E63A0C;
  --grad-start: #FF6A00;
  --grad-end: #FF2D1F;
  --amber: #FFB020;
  --teal: #2DE1C2;
  --bg-base: #0B101B;
  --bg-sub: #111827;
  --bg-card: #121A29;
  --text-main: #F2F5F9;
  --text-sub: #B0BAC9;
  --text-mute: #768096;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.12);
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 8px 30px rgba(0,0,0,0.30);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.45);
  --nav-h: 72px;
  --section-space: clamp(4rem, 8vw, 7rem);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg-base);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease, border-color .25s ease, background-color .25s ease, transform .3s ease, box-shadow .3s ease; }
ul { list-style: none; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; padding-left: 1rem; padding-right: 1rem; }
.orbitron { font-family: 'Orbitron', sans-serif; }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  background: rgba(11,16,27,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background .3s ease, box-shadow .3s ease;
}
.site-header::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.site-header .navbar { padding: 0; min-height: var(--nav-h); }
.site-header .navbar .container { display: flex; align-items: center; justify-content: space-between; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-main);
  line-height: 1;
}
.brand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.brand-text { color: var(--text-main); }
.site-header .navbar-collapse { flex-grow: 0; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  margin: 0;
  padding: 0;
}
.nav-links a {
  position: relative;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-sub);
  padding: 0.25rem 0;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--grad-start), var(--grad-end));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform .3s ease;
}
.nav-links a:hover { color: var(--text-main); }
.nav-links a:hover::after { transform: scaleX(1); }
.nav-links a.active { color: var(--text-main); }
.nav-links a.active::after { transform: scaleX(1); }
.nav-cta { margin-left: 2.2rem; }
.btn-ghost-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
  box-shadow: 0 4px 20px rgba(255,77,28,0.25);
  transition: transform .3s ease, box-shadow .3s ease, filter .3s ease;
  border: none;
}
.btn-ghost-nav:hover { transform: translateY(-2px); box-shadow: 0 6px 24px rgba(255,77,28,0.4); filter: brightness(1.06); color: #fff; }
.navbar-toggler {
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  padding: 0.35rem 0.6rem;
  background: transparent;
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23F2F5F9' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
  width: 1.4em;
  height: 1.4em;
}
.site-header .navbar-collapse.show, .site-header .navbar-collapse.collapsing {
  background: rgba(11,16,27,0.98);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem 1.5rem;
  border-radius: 0 0 12px 12px;
}
@media (max-width: 991px) {
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.5rem 0 1rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a { font-size: 1.1rem; }
  .nav-cta { margin-left: 0; padding-top: 1rem; }
  .nav-cta .btn-ghost-nav { width: 100%; }
}

/* ===== Hero ===== */
.cat-hero {
  position: relative;
  min-height: 62vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 3rem) 0 4rem;
  overflow: hidden;
  background: var(--bg-base);
}
.cat-hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
}
.cat-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11,16,27,0.82) 0%, rgba(11,16,27,0.65) 50%, var(--bg-base) 100%);
}
.cat-hero-glow {
  position: absolute;
  top: -20%;
  right: -10%;
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(255,77,28,0.18) 0%, transparent 70%);
  pointer-events: none;
}
.cat-hero-content { position: relative; z-index: 2; max-width: 820px; }
.cat-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--amber);
  background: rgba(255,176,32,0.12);
  border: 1px solid rgba(255,176,32,0.25);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}
.cat-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-main);
}
.cat-hero h1 .highlight {
  color: var(--primary);
  position: relative;
}
.cat-hero .hero-sub {
  font-size: 1.125rem;
  color: var(--text-sub);
  max-width: 600px;
  margin-bottom: 2rem;
  line-height: 1.6;
}
.cat-hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ===== 按钮 ===== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  color: #fff;
  background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
  border: none;
  box-shadow: 0 4px 20px rgba(255,77,28,0.25);
  transition: transform .3s ease, box-shadow .3s ease, filter .3s ease;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 28px rgba(255,77,28,0.4); filter: brightness(1.06); color: #fff; }
.btn-primary:active { transform: translateY(0) scale(0.99); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  background: transparent;
  border: 1px solid var(--border-strong);
  transition: border-color .3s ease, background-color .3s ease, color .3s ease, transform .3s ease;
}
.btn-secondary:hover { border-color: var(--primary); background: rgba(255,77,28,0.08); color: var(--text-main); transform: translateY(-2px); }
.btn-text-orange {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
}
.btn-text-orange svg { transition: transform .3s ease; }
.btn-text-orange:hover svg { transform: translateX(4px); margin-left: -6px; }
.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-sub);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 2rem;
  transition: color .3s ease;
}
.back-home-link:hover { color: var(--primary); }
.back-home-link svg { transition: transform .3s ease; }
.back-home-link:hover svg { transform: translateX(-4px); }

/* ===== 通用板块 ===== */
.section { padding: var(--section-space) 0; position: relative; }
.section-alt { background: var(--bg-sub); }
.section-head { text-align: center; margin-bottom: 3.5rem; }
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--amber);
  background: rgba(255,176,32,0.1);
  padding: 0.25rem 0.9rem;
  border-radius: 999px;
  letter-spacing: 0.08em;
  margin-bottom: 0.9rem;
  text-transform: uppercase;
}
.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
}
.section-line {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--grad-start), var(--grad-end));
  border-radius: 3px;
  margin: 1rem auto 0;
}
.section-head.narrow { max-width: 640px; margin-left: auto; margin-right: auto; }

/* ===== 分类介绍 ===== */
.guide-info-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
}
.guide-info-text p {
  color: var(--text-sub);
  font-size: 1.02rem;
  line-height: 1.85;
  margin-bottom: 1.25rem;
}
.guide-info-text p strong { color: var(--text-main); font-weight: 700; }
.guide-info-media {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
}
.guide-info-media img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; transition: transform .4s ease; }
.guide-info-media:hover img { transform: scale(1.03); }
.guide-info-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(11,16,27,0.55) 100%);
  pointer-events: none;
}
@media (max-width: 991px) {
  .guide-info-grid { grid-template-columns: 1fr; gap: 2rem; }
}

/* ===== 卖点卡片 ===== */
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity .3s ease;
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(255,77,28,0.35); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.25rem;
  transition: border-color .3s ease, color .3s ease, transform .3s ease;
}
.feature-card:hover .feature-icon { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); }
.feature-card h3 { font-size: 1.125rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.75rem; }
.feature-card p { font-size: 0.92rem; color: var(--text-sub); line-height: 1.7; margin: 0; }

/* ===== 场景卡片 ===== */
.scene-card {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  height: 100%;
  transition: border-color .3s ease, transform .3s ease, background-color .3s ease;
}
.scene-card:hover { border-color: rgba(255,77,28,0.4); transform: translateY(-4px); background: rgba(255,77,28,0.03); }
.scene-card .scene-num {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: rgba(255,77,28,0.45);
  line-height: 1;
  margin-bottom: 1rem;
  display: block;
}
.scene-card h3 { font-size: 1.125rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.65rem; }
.scene-card p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.7; margin: 0; }

/* ===== 三步流程 ===== */
.steps-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem 2.5rem;
  align-items: stretch;
  position: relative;
}
.step-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 2rem 1.75rem;
  background: transparent;
  text-align: center;
  position: relative;
  transition: border-color .3s ease, transform .3s ease, box-shadow .3s ease;
}
.step-item:hover {
  border-color: rgba(255,77,28,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.step-item::after {
  content: "";
  position: absolute;
  top: 50%;
  right: -1.5rem;
  width: 1.5rem;
  border-top: 1px dashed rgba(255,255,255,0.2);
  display: none;
  transform: translateY(-50%);
}
.step-item:last-child::after { display: none; }
@media (min-width: 992px) {
  .steps-row .step-item:not(:last-child)::after { display: block; }
}
.step-num {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: rgba(255,77,28,0.5);
  line-height: 1;
  margin-bottom: 1rem;
  display: block;
}
.step-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin: 0 auto 1rem;
}
.step-item h3 { font-size: 1.125rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.65rem; }
.step-item p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.7; margin: 0; max-width: 260px; margin-inline: auto; }
@media (max-width: 991px) {
  .steps-row { grid-template-columns: 1fr 1fr; }
  .steps-row .step-item { padding: 1.75rem 1.25rem; }
}
@media (max-width: 767px) {
  .steps-row { grid-template-columns: 1fr; }
}

/* ===== 相关条目卡片 ===== */
.entry-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  height: 100%;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  display: flex;
  flex-direction: column;
}
.entry-card:hover { transform: translateY(-4px); border-color: rgba(255,77,28,0.35); box-shadow: var(--shadow-hover); }
.entry-media { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.entry-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.entry-card:hover .entry-media img { transform: scale(1.03); }
.entry-body { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.entry-badge {
  align-self: flex-start;
  padding: 0.22rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--amber);
  background: rgba(255,176,32,0.12);
  border: 1px solid rgba(255,176,32,0.2);
  margin-bottom: 0.85rem;
}
.entry-body h3 { font-size: 1.0625rem; font-weight: 700; color: var(--text-main); margin-bottom: 0.6rem; line-height: 1.45; transition: color .3s ease; }
.entry-card:hover .entry-body h3 { color: var(--primary); }
.entry-body p { font-size: 0.9rem; color: var(--text-sub); line-height: 1.65; margin-bottom: 1rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex-grow: 1; }
.entry-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
}
.entry-date { font-family: 'Orbitron', sans-serif; font-size: 0.8rem; color: var(--text-mute); }
.entry-more {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-sub);
  font-weight: 500;
  transition: color .3s ease;
}
.entry-more svg { transition: transform .3s ease; }
.entry-more:hover { color: var(--primary); }
.entry-more:hover svg { transform: translateX(4px); }

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.accordion { --bs-accordion-color: var(--text-main); --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--border); --bs-accordion-border-width: 1px; --bs-accordion-border-radius: 10px; --bs-accordion-inner-border-radius: 10px; --bs-accordion-btn-padding-y: 1.25rem; --bs-accordion-btn-padding-x: 1.5rem; --bs-accordion-btn-font-size: 1rem; --bs-accordion-btn-font-weight: 600; --bs-accordion-btn-color: var(--text-main); --bs-accordion-btn-bg: transparent; --bs-accordion-btn-icon: none; --bs-accordion-btn-active-icon: none; --bs-accordion-btn-focus-border-color: transparent; --bs-accordion-btn-focus-box-shadow: none; --bs-accordion-body-padding-y: 0 1.5rem 1.25rem; --bs-accordion-active-color: var(--text-main); --bs-accordion-active-bg: rgba(255,77,28,0.04); }
.accordion-item {
  background: transparent;
  border: 1px solid var(--border) !important;
  border-radius: 10px !important;
  margin-bottom: 0.85rem;
  overflow: hidden;
  transition: border-color .3s ease;
}
.accordion-item:has(.accordion-button:not(.collapsed)) {
  border-color: rgba(255,77,28,0.35) !important;
  box-shadow: 0 0 0 1px rgba(255,77,28,0.08);
}
.accordion-button {
  background: transparent;
  color: var(--text-main);
  position: relative;
  padding-right: 3.5rem;
}
.accordion-button::after {
  content: "";
  width: 20px;
  height: 20px;
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  line-height: 1;
  transition: transform .3s ease, border-color .3s ease, background-color .3s ease;
}
.accordion-button::before {
  content: "+";
  position: absolute;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-sub);
  font-weight: 400;
  transition: transform .3s ease, color .3s ease;
  z-index: 1;
  pointer-events: none;
}
.accordion-button:not(.collapsed)::before { transform: translateY(-50%) rotate(45deg); color: var(--primary); transition: transform .3s ease; }
.accordion-button:not(.collapsed) {
  background: rgba(255,77,28,0.04);
  color: var(--text-main);
  box-shadow: inset 3px 0 0 var(--primary);
}
.accordion-button:hover { color: var(--text-main); }
.accordion-button:focus { box-shadow: none; }
.accordion-body {
  padding: 0 1.5rem 1.25rem;
  background: rgba(255,77,28,0.02);
  color: var(--text-sub);
  font-size: 0.95rem;
  line-height: 1.75;
}
@media (max-width: 575px) {
  .accordion-button { font-size: 0.92rem; padding: 1rem 3rem 1rem 1.1rem; }
  .accordion-body { padding: 0 1.1rem 1rem; font-size: 0.9rem; }
}

/* ===== CTA 表单 ===== */
.cta-panel {
  background: linear-gradient(145deg, #121A29 0%, #0D1420 100%);
  border: 1px solid rgba(255,77,28,0.2);
  border-radius: 16px;
  padding: clamp(2rem, 5vw, 4rem);
  position: relative;
  overflow: hidden;
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255,77,28,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.cta-head { text-align: center; margin-bottom: 2.5rem; position: relative; z-index: 1; }
.cta-head h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; color: var(--text-main); margin-bottom: 0.75rem; }
.cta-head p { color: var(--text-sub); font-size: 0.98rem; max-width: 560px; margin: 0 auto; }
.cta-form-grid {
  max-width: 680px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.cta-form-grid .form-item.full { grid-column: 1 / -1; }
.form-label { display: block; font-size: 0.85rem; color: var(--text-sub); margin-bottom: 0.45rem; font-weight: 500; }
.form-control {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-size: 0.95rem;
  transition: border-color .3s ease, box-shadow .3s ease, background-color .3s ease;
  appearance: none;
  -webkit-appearance: none;
}
.form-control::placeholder { color: var(--text-mute); }
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255,77,28,0.15);
  background: rgba(255,255,255,0.06);
}
select.form-control {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23768096' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
select.form-control option { background: var(--bg-card); color: var(--text-main); }
.cta-submit {
  grid-column: 1 / -1;
  width: 100%;
  padding: 0.85rem 2rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--grad-start), var(--grad-end));
  border: none;
  box-shadow: 0 4px 22px rgba(255,77,28,0.3);
  cursor: pointer;
  transition: transform .3s ease, box-shadow .3s ease, filter .3s ease;
  margin-top: 0.5rem;
}
.cta-submit:hover { transform: translateY(-2px); box-shadow: 0 6px 30px rgba(255,77,28,0.45); filter: brightness(1.06); }
.cta-submit:active { transform: translateY(0) scale(0.99); }
.cta-tip { grid-column: 1 / -1; text-align: center; font-size: 0.8rem; color: var(--text-mute); margin-top: 0.4rem; }
@media (max-width: 575px) {
  .cta-form-grid { grid-template-columns: 1fr; }
  .cta-form-grid .form-item.full { grid-column: 1; }
}

/* ===== Footer ===== */
.site-footer {
  background: #080C14;
  border-top: 1px solid transparent;
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
}
.footer-top { padding: 4rem 0 2rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 2.5rem;
}
.footer-col .brand { margin-bottom: 1rem; }
.footer-col .brand-text { font-size: 1.15rem; }
.footer-desc {
  font-size: 0.88rem;
  color: var(--text-mute);
  line-height: 1.7;
  max-width: 240px;
  margin: 0.5rem 0 0;
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.1rem;
  letter-spacing: 0.04em;
}
.footer-links {
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.footer-links a, .footer-contact a, .footer-contact span {
  font-size: 0.88rem;
  color: var(--text-mute);
  transition: color .3s ease;
}
.footer-links a:hover, .footer-contact a:hover { color: var(--primary); }
.footer-contact {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-mute);
}
.footer-contact svg { color: var(--text-mute); flex-shrink: 0; }
.footer-contact a:hover svg { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 1.25rem 0;
}
.footer-bottom .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-copy { font-size: 0.8rem; color: var(--text-mute); }
.footer-copy .domain { color: var(--text-mute); }
@media (max-width: 991px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 575px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom .container { justify-content: center; text-align: center; }
}

/* ===== 响应式补强 ===== */
@media (max-width: 767px) {
  .section { --section-space: 3rem; }
  .cat-hero { min-height: 52vh; padding: calc(var(--nav-h) + 2rem) 0 3rem; }
  .cat-hero-actions .btn-primary, .cat-hero-actions .btn-secondary { width: 100%; }
  .cat-hero-actions { flex-direction: column; gap: 0.75rem; }
  .cat-hero h1 { font-size: clamp(1.8rem, 6vw, 2.4rem); }
  .cat-hero .hero-sub { font-size: 1rem; }
  .feature-card, .scene-card, .entry-body { padding: 1.25rem; }
}
@media (max-width: 520px) {
  .cat-hero-badge { font-size: 0.72rem; }
  .section-head h2 { font-size: 1.6rem; }
  .section-tag { font-size: 0.72rem; }
  .footer-grid { gap: 1.5rem; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: #252d3b; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* roulang page: article */
* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        :root {
            --primary: #FF4D1C;
            --primary-hover: #E63A0C;
            --gradient-main: linear-gradient(135deg, #FF6A00 0%, #FF2D1F 100%);
            --accent: #FFB020;
            --success: #2DE1C2;
            --bg-dark: #0B101B;
            --bg-panel: #111827;
            --bg-card: #121A29;
            --text-main: #F2F5F9;
            --text-sub: #B0BAC9;
            --text-weak: #768096;
            --border-light: rgba(255,255,255,0.08);
            --border-strong: rgba(255,255,255,0.15);
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-card: 0 8px 30px rgba(0,0,0,0.30);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.45);
        }
        html,
        body {
            background: var(--bg-dark);
            color: var(--text-main);
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        body {
            padding-top: 72px;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        ul,
        ol {
            list-style: none;
        }
        .container {
            max-width: 1200px;
            padding-left: 1rem;
            padding-right: 1rem;
            margin: 0 auto;
        }

        /* 按钮 */
        .btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 0.75rem 2rem;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 20px rgba(255, 77, 28, 0.25);
            transition: all 0.25s ease;
            border: none;
            line-height: 1.4;
        }
        .btn-main:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 28px rgba(255, 77, 28, 0.4);
            filter: brightness(1.05);
        }
        .btn-main:active {
            transform: translateY(0);
            box-shadow: 0 2px 12px rgba(255, 77, 28, 0.3);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.7rem 1.8rem;
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
            line-height: 1.4;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(255, 77, 28, 0.08);
        }

        /* Header 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            z-index: 1000;
            background: transparent;
            transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
        }
        .site-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(255, 77, 28, 0.55), transparent);
            z-index: 1;
        }
        .site-header.scrolled {
            background: rgba(11, 16, 27, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        }
        .site-header .navbar {
            min-height: 72px;
            padding: 0;
        }
        .site-header .container {
            display: flex;
            align-items: center;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-main);
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .brand .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
        }
        .brand:hover {
            color: var(--text-main);
        }
        .brand:hover .brand-icon {
            color: var(--primary-hover);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            margin: 0;
            padding: 0;
        }
        .nav-links>li {
            position: relative;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-sub);
            padding: 0.35rem 0;
            position: relative;
            transition: color 0.2s ease;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #FF6A00, #FF2D1F);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .nav-links a:hover {
            color: #fff;
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: #fff;
        }
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-cta {
            margin-left: 2rem;
        }
        .btn-ghost-nav {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--gradient-main);
            color: #fff;
            font-weight: 700;
            font-size: 0.875rem;
            padding: 0.5rem 1.5rem;
            border-radius: calc(var(--radius-btn) - 2px);
            box-shadow: 0 2px 14px rgba(255, 77, 28, 0.25);
            transition: all 0.25s ease;
            white-space: nowrap;
        }
        .btn-ghost-nav:hover {
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(255, 77, 28, 0.4);
        }
        .navbar-toggler {
            border: 1px solid var(--border-strong);
            border-radius: 8px;
            padding: 0.4rem 0.6rem;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(255, 77, 28, 0.15);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255,255,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 1.4em;
            height: 1.4em;
        }

        /* 文章 Hero */
        .article-hero {
            position: relative;
            padding: 110px 0 60px;
            background-image: linear-gradient(to bottom, rgba(11, 16, 27, 0.82) 0%, rgba(11, 16, 27, 0.92) 60%, rgba(11, 16, 27, 1) 100%), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 30%;
            overflow: hidden;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -60px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255, 77, 28, 0.16) 0%, transparent 65%);
            pointer-events: none;
            z-index: 0;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 48px 48px;
            pointer-events: none;
            z-index: 0;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.875rem;
            color: var(--text-weak);
            margin-bottom: 1.5rem;
        }
        .breadcrumb-nav a {
            color: var(--text-weak);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .divider {
            color: rgba(255, 255, 255, 0.2);
        }
        .breadcrumb-nav .current {
            color: var(--text-sub);
            max-width: 380px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .article-hero-title {
            font-size: clamp(1.75rem, 4vw, 2.75rem);
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 1.25rem;
            max-width: 840px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem;
            font-size: 0.875rem;
            color: var(--text-weak);
        }
        .badge-category {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.85rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(255, 176, 32, 0.12);
            border-radius: 999px;
        }
        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.85rem;
            color: var(--text-weak);
        }
        .meta-item svg {
            color: var(--text-weak);
            flex-shrink: 0;
        }

        /* 文章正文 */
        .article-section {
            padding: 3.5rem 0 4.5rem;
            background: var(--bg-dark);
        }
        .article-container {
            max-width: 780px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        .article-content {
            font-size: 1.0625rem;
            line-height: 1.8;
            color: var(--text-sub);
        }
        .article-content h2 {
            font-size: 1.65rem;
            font-weight: 800;
            color: var(--text-main);
            margin-top: 2.5rem;
            margin-bottom: 1.25rem;
            line-height: 1.4;
        }
        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-main);
            margin-top: 2rem;
            margin-bottom: 1rem;
        }
        .article-content p {
            margin-bottom: 1.25rem;
        }
        .article-content a {
            color: var(--primary);
            border-bottom: 1px solid rgba(255, 77, 28, 0.3);
        }
        .article-content a:hover {
            color: var(--primary-hover);
            border-color: var(--primary);
        }
        .article-content img {
            border-radius: var(--radius-card);
            margin: 1.5rem 0;
        }
        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(255, 77, 28, 0.05);
            border-radius: 8px;
            padding: 1.25rem 1.5rem;
            margin: 1.75rem 0;
            color: var(--text-sub);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.25rem;
            padding-left: 1.5rem;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin-bottom: 0.5rem;
        }
        .article-content figure {
            margin: 1.5rem 0;
        }
        .article-content figcaption {
            font-size: 0.825rem;
            color: var(--text-weak);
            text-align: center;
            margin-top: 0.5rem;
        }
        .article-empty {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--text-weak);
        }
        .article-empty p {
            margin-bottom: 1.25rem;
            font-size: 1.05rem;
        }

        /* 相关推荐 */
        .related-section {
            padding: 4.5rem 0;
            background: var(--bg-panel);
            border-top: 1px solid var(--border-light);
        }
        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.1rem);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0.5rem;
        }
        .section-title .accent {
            color: var(--primary);
        }
        .title-underline {
            display: block;
            width: 24px;
            height: 2px;
            background: linear-gradient(90deg, #FF6A00, #FF2D1F);
            border-radius: 2px;
            margin-top: 0.75rem;
            margin-bottom: 2rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .related-card {
            display: flex;
            gap: 1rem;
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-card);
            padding: 1rem;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            min-width: 0;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 28, 0.35);
        }
        .related-thumb {
            width: 96px;
            height: 88px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
            background: rgba(255, 255, 255, 0.03);
        }
        .related-info {
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .related-info h3 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 0.35rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-info h3 a {
            color: inherit;
        }
        .related-info h3 a:hover {
            color: var(--primary);
        }
        .related-info p {
            font-size: 0.8rem;
            color: var(--text-weak);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .back-row {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-light);
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-sub);
            font-size: 0.9rem;
            font-weight: 500;
            transition: color 0.25s ease;
        }
        .back-link .arrow {
            display: inline-block;
            transition: transform 0.25s ease;
        }
        .back-link:hover {
            color: var(--primary);
        }
        .back-link:hover .arrow {
            transform: translateX(-4px);
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 4rem 0;
            background: #080C14;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(255, 77, 28, 0.55), transparent);
        }
        .cta-inner {
            background: var(--bg-card);
            border: 1px solid rgba(255, 77, 28, 0.2);
            border-radius: 16px;
            padding: clamp(2.5rem, 5vw, 4rem);
            position: relative;
            overflow: hidden;
        }
        .cta-inner::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 77, 28, 0.14) 0%, transparent 65%);
            pointer-events: none;
        }
        .cta-title {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 0.75rem;
            position: relative;
            z-index: 1;
        }
        .cta-sub {
            font-size: 0.95rem;
            color: var(--text-sub);
            margin-bottom: 2rem;
            max-width: 480px;
            position: relative;
            z-index: 1;
        }
        .cta-form {
            position: relative;
            z-index: 1;
        }
        .cta-form .row {
            margin-bottom: 1rem;
        }
        .form-label {
            font-size: 0.85rem;
            color: var(--text-weak);
            margin-bottom: 0.35rem;
            font-weight: 500;
        }
        .form-control {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-btn);
            color: #fff;
            padding: 0.75rem 1rem;
            font-size: 0.95rem;
            transition: border-color 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
            height: auto;
        }
        .form-control::placeholder {
            color: rgba(255, 255, 255, 0.3);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 77, 28, 0.15);
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .form-select {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text-main);
            border-radius: var(--radius-btn);
            padding: 0.75rem 1rem;
            font-size: 0.95rem;
            height: auto;
        }
        .form-select option {
            background: var(--bg-card);
            color: var(--text-main);
        }
        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 77, 28, 0.15);
        }
        .cta-form .btn-main {
            padding: 0.75rem 1.5rem;
            width: auto;
        }

        /* 页脚 */
        .site-footer {
            background: #080C14;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-top {
            padding: 4rem 0 2rem;
            position: relative;
        }
        .footer-top::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 1px;
            background: linear-gradient(to right, transparent, rgba(255, 77, 28, 0.7), transparent);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 2rem;
        }
        .footer-col .brand {
            font-size: 1.1rem;
            margin-bottom: 1rem;
        }
        .footer-desc {
            color: var(--text-weak);
            font-size: 0.875rem;
            margin-top: 0.85rem;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1rem;
            letter-spacing: 0.04em;
        }
        .footer-links {
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 0.5rem;
        }
        .footer-links a {
            color: var(--text-weak);
            font-size: 0.875rem;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-contact {
            padding: 0;
            margin: 0;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--text-weak);
            font-size: 0.875rem;
            margin-bottom: 0.65rem;
        }
        .footer-contact svg {
            color: var(--text-weak);
            flex-shrink: 0;
        }
        .footer-contact a {
            color: var(--text-weak);
        }
        .footer-contact a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 1.25rem 0;
        }
        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-weak);
            margin: 0;
        }

        /* 响应式 */
        @media (max-width: 991.98px) {
            .container {
                max-width: 100%;
            }
            .navbar-collapse {
                background: rgba(11, 16, 27, 0.97);
                border: 1px solid var(--border-light);
                border-radius: 12px;
                padding: 1.5rem;
                margin-top: 0.75rem;
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
            }
            .nav-links {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
                width: 100%;
            }
            .nav-links a {
                font-size: 1.06rem;
                padding: 0.65rem 0;
                color: var(--text-main);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 1rem;
                width: 100%;
            }
            .btn-ghost-nav {
                width: 100%;
            }
            .article-hero {
                padding-top: 90px;
                padding-bottom: 48px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 2rem;
            }
        }
        @media (max-width: 767.98px) {
            body {
                padding-top: 64px;
            }
            .site-header .navbar {
                min-height: 64px;
            }
            .article-hero {
                padding-top: 76px;
                padding-bottom: 36px;
            }
            .article-hero-title {
                font-size: 1.55rem;
                line-height: 1.4;
            }
            .article-meta {
                gap: 0.7rem;
            }
            .article-section {
                padding: 2.5rem 0 3rem;
            }
            .article-content {
                font-size: 1rem;
            }
            .article-content h2 {
                font-size: 1.35rem;
                margin-top: 2rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .related-section {
                padding: 3rem 0;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-thumb {
                width: 88px;
                height: 80px;
            }
            .cta-section {
                padding: 2.5rem 0;
            }
            .cta-inner {
                padding: 2rem 1.25rem;
            }
            .cta-title {
                font-size: 1.5rem;
            }
            .cta-form .btn-main {
                width: 100%;
            }
            .footer-top {
                padding: 2.5rem 0 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.75rem;
            }
            .footer-bottom {
                padding: 1rem 0;
            }
        }
        @media (max-width: 520px) {
            .article-hero-title {
                font-size: 1.35rem;
            }
            .breadcrumb-nav {
                font-size: 0.8rem;
                gap: 0.4rem;
            }
            .article-meta {
                font-size: 0.8rem;
            }
            .related-card {
                padding: 0.85rem;
            }
            .related-thumb {
                width: 76px;
                height: 70px;
            }
        }