/* roulang page: index */
:root {
        --c-primary: #0f766e;
        --c-primary-dark: #115e59;
        --c-primary-light: #ccfbf1;
        --c-accent: #f59e0b;
        --c-bg: #f8fafc;
        --c-surface: #ffffff;
        --c-text: #0f172a;
        --c-text-weak: #64748b;
        --c-border: #e2e8f0;
        --radius: 16px;
        --radius-sm: 10px;
        --shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 8px 24px rgba(15, 23, 42, 0.06);
        --shadow-lg: 0 4px 12px rgba(15, 23, 42, 0.08), 0 20px 40px rgba(15, 23, 42, 0.12);
        --transition: all 0.25s ease-in-out;
        --font-sans: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }

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

    html {
        scroll-behavior: smooth;
    }

    body {
        font-family: var(--font-sans);
        background-color: var(--c-bg);
        color: var(--c-text);
        line-height: 1.7;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

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

    a {
        color: var(--c-primary);
        text-decoration: none;
        transition: var(--transition);
    }

    a:hover {
        color: var(--c-primary-dark);
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }

    .section {
        padding: 5rem 0;
    }

    .section-sm {
        padding: 3rem 0;
    }

    .text-hero {
        font-size: clamp(2.2rem, 5vw, 3.5rem);
        line-height: 1.15;
        font-weight: 800;
        letter-spacing: -0.02em;
    }

    .card {
        background: var(--c-surface);
        border: 1px solid var(--c-border);
        border-radius: var(--radius);
        box-shadow: var(--shadow);
        transition: var(--transition);
    }

    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }

    .badge {
        display: inline-flex;
        align-items: center;
        gap: 0.4rem;
        padding: 0.25rem 0.75rem;
        border-radius: 9999px;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.02em;
        line-height: 1.4;
        white-space: nowrap;
    }

    .badge-teal {
        background-color: var(--c-primary-light);
        color: var(--c-primary-dark);
    }

    .badge-amber {
        background-color: #fef3c7;
        color: #92400e;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 0.5rem;
        font-weight: 600;
        padding: 0.75rem 1.5rem;
        border-radius: var(--radius-sm);
        transition: var(--transition);
        cursor: pointer;
        border: 2px solid transparent;
    }

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

    .btn-primary:hover {
        background-color: var(--c-primary-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 10px 25px rgba(15, 118, 110, 0.25);
    }

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

    .btn-outline:hover {
        background-color: var(--c-primary);
        color: #fff;
        transform: translateY(-2px);
    }

    .btn-lg {
        padding: 0.9rem 2rem;
        font-size: 1.0625rem;
    }

    .nav-topbar {
        background-color: #0b1220;
        color: rgba(255, 255, 255, 0.85);
        font-size: 0.85rem;
    }

    .nav-topbar a {
        color: rgba(255, 255, 255, 0.7);
    }

    .nav-topbar a:hover {
        color: #fff;
    }

    .main-nav {
        background-color: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--c-border);
        position: sticky;
        top: 0;
        z-index: 50;
    }

    .nav-link {
        display: inline-flex;
        align-items: center;
        padding: 0.5rem 1rem;
        font-weight: 500;
        font-size: 0.95rem;
        color: var(--c-text-weak);
        border-radius: 8px;
        transition: var(--transition);
    }

    .nav-link:hover {
        color: var(--c-primary);
        background-color: rgba(15, 118, 110, 0.06);
    }

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

    .logo-text {
        font-size: 1.5rem;
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--c-text);
        background: linear-gradient(135deg, #0f766e 0%, #10b981 60%, #0ea5e9 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .hero {
        position: relative;
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        overflow: hidden;
    }

    .hero-overlay {
        background: linear-gradient(105deg, rgba(2, 6, 23, 0.9) 0%, rgba(15, 23, 42, 0.75) 55%, rgba(15, 23, 42, 0.35) 100%);
    }

    .hero-content {
        max-width: 760px;
    }

    .hero-title {
        color: #ffffff;
        font-size: clamp(2.2rem, 5vw, 3.5rem);
        font-weight: 800;
        line-height: 1.15;
        letter-spacing: -0.02em;
    }

    .hero-title span {
        color: #5eead4;
    }

    .hero-desc {
        color: rgba(255, 255, 255, 0.78);
        font-size: 1.15rem;
        line-height: 1.8;
    }

    .hero-chip {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background-color: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 9999px;
        padding: 0.35rem 1rem;
        color: #ccfbf1;
        font-size: 0.85rem;
        font-weight: 500;
        backdrop-filter: blur(4px);
    }

    .stat-card {
        background: rgba(255, 255, 255, 0.08);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: var(--radius);
        padding: 1.5rem;
        backdrop-filter: blur(8px);
        transition: var(--transition);
    }

    .stat-card:hover {
        border-color: #5eead4;
        background: rgba(255, 255, 255, 0.14);
    }

    .stat-number {
        font-size: 2rem;
        font-weight: 800;
        color: #fff;
        line-height: 1.2;
    }

    .stat-label {
        color: rgba(255, 255, 255, 0.6);
        font-size: 0.9rem;
        margin-top: 0.25rem;
    }

    .grid-card {
        border: 1px solid var(--c-border);
        border-radius: var(--radius);
        overflow: hidden;
        background-color: var(--c-surface);
        transition: var(--transition);
    }

    .grid-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(15, 118, 110, 0.4);
    }

    .category-icon {
        width: 48px;
        height: 48px;
        border-radius: 12px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
    }

    .post-list {
        list-style: none;
    }

    .post-list li {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        padding: 1rem 1.25rem;
        border-bottom: 1px solid var(--c-border);
        transition: background-color 0.2s ease;
    }

    .post-list li:last-child {
        border-bottom: none;
    }

    .post-list li:hover {
        background-color: rgba(15, 118, 110, 0.03);
    }

    .post-meta {
        font-size: 0.8rem;
        color: var(--c-text-weak);
        display: flex;
        flex-wrap: wrap;
        gap: 0.75rem;
        align-items: center;
    }

    .post-title {
        font-weight: 600;
        color: var(--c-text);
        line-height: 1.5;
        transition: color 0.2s;
    }

    .post-title:hover {
        color: var(--c-primary);
    }

    .guide-list {
        list-style: none;
        counter-reset: guide;
    }

    .guide-list li {
        counter-increment: guide;
        display: flex;
        gap: 1rem;
        padding: 1.25rem 0;
        border-bottom: 1px solid var(--c-border);
    }

    .guide-list li:last-child {
        border-bottom: none;
    }

    .guide-list li::before {
        content: counter(guide, decimal-leading-zero);
        font-weight: 800;
        font-size: 1.25rem;
        color: var(--c-primary);
        opacity: 0.35;
        min-width: 3ch;
    }

    .faq-item {
        border: 1px solid var(--c-border);
        border-radius: var(--radius);
        background-color: var(--c-surface);
        overflow: hidden;
        margin-bottom: 1rem;
    }

    .faq-question {
        width: 100%;
        text-align: left;
        padding: 1.25rem 1.5rem;
        background: transparent;
        border: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--c-text);
        cursor: pointer;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 1rem;
        transition: background-color 0.25s ease;
    }

    .faq-question:hover {
        background-color: rgba(15, 118, 110, 0.04);
    }

    .faq-question:focus {
        outline: none;
        background-color: rgba(15, 118, 110, 0.06);
    }

    .cta-banner {
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        border-radius: 24px;
        overflow: hidden;
        position: relative;
    }

    .cta-overlay {
        background: linear-gradient(90deg, rgba(2, 6, 23, 0.92) 0%, rgba(15, 23, 42, 0.8) 50%, rgba(15, 23, 42, 0.5) 100%);
        padding: 4rem 2rem;
        text-align: center;
    }

    .cta-banner .cta-overlay h2 {
        color: #fff;
        font-size: clamp(1.6rem, 3vw, 2.3rem);
        font-weight: 800;
        letter-spacing: -0.01em;
    }

    .cta-banner .cta-overlay p {
        color: rgba(255, 255, 255, 0.75);
        font-size: 1.05rem;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
    }

    .footer {
        background-color: #0b1220;
        color: rgba(255, 255, 255, 0.7);
        font-size: 0.9rem;
    }

    .footer h4 {
        color: #fff;
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 1rem;
        letter-spacing: 0.01em;
    }

    .footer ul {
        list-style: none;
    }

    .footer ul li {
        margin-bottom: 0.6rem;
    }

    .footer a {
        color: rgba(255, 255, 255, 0.6);
        transition: color 0.2s;
    }

    .footer a:hover {
        color: #5eead4;
    }

    .copyright {
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        padding-top: 1.5rem;
        margin-top: 3rem;
        text-align: center;
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.45);
    }

    .feature-card {
        padding: 2rem 1.75rem;
        text-align: left;
    }

    .feature-icon {
        width: 56px;
        height: 56px;
        border-radius: 16px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.4rem;
        margin-bottom: 1.25rem;
    }

    .feature-card h3 {
        font-size: 1.15rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
    }

    .feature-card p {
        font-size: 0.9rem;
        color: var(--c-text-weak);
        line-height: 1.7;
    }

    .index-link-card {
        position: relative;
        padding: 1.8rem 1.6rem;
    }

    .link-card-arrow {
        color: rgba(255, 255, 255, 0.7);
        transition: transform 0.25s ease;
    }

    .link-card:hover .link-card-arrow {
        transform: translateX(6px);
    }

    .link-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 20px 40px rgba(15, 23, 42, 0.18);
    }

    .link-card:focus {
        outline: 3px solid rgba(94, 234, 212, 0.5);
        outline-offset: 2px;
    }

    .section-headline {
        font-size: clamp(1.75rem, 3.5vw, 2.25rem);
        font-weight: 800;
        letter-spacing: -0.02em;
        color: var(--c-text);
        line-height: 1.3;
    }

    .section-subtext {
        font-size: 1rem;
        color: var(--c-text-weak);
        margin-top: 0.5rem;
    }

    .intro-image-wrap {
        border-radius: var(--radius);
        overflow: hidden;
        box-shadow: var(--shadow-lg);
        position: relative;
    }

    .intro-image-wrap::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(200deg, rgba(15, 118, 110, 0) 60%, rgba(15, 118, 110, 0.25) 100%);
        border-radius: var(--radius);
    }

    .intro-list li {
        display: flex;
        gap: 0.85rem;
        margin-bottom: 1rem;
        align-items: flex-start;
    }

    .intro-list .check-icon {
        flex-shrink: 0;
        width: 26px;
        height: 26px;
        border-radius: 50%;
        background-color: #d1fae5;
        color: #047857;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.75rem;
        margin-top: 0.1rem;
    }

    @media (max-width: 1024px) {
        .hero-desc {
            font-size: 1.05rem;
        }

        .stat-number {
            font-size: 1.6rem;
        }
    }

    @media (max-width: 768px) {
        .section {
            padding: 3.5rem 0;
        }

        .section-sm {
            padding: 2rem 0;
        }

        .nav-desktop {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .nav-desktop .nav-link {
            flex-shrink: 0;
            font-size: 0.9rem;
            padding: 0.45rem 0.8rem;
        }

        .hero-title {
            font-size: 2rem;
        }

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

        .stat-card {
            padding: 1.1rem;
        }

        .cta-banner .cta-overlay {
            padding: 2.5rem 1.2rem;
        }

        .footer {
            text-align: center;
        }

        .footer .grid {
            gap: 2rem;
        }
    }

    @media (max-width: 520px) {
        .hero-title {
            font-size: 1.7rem;
        }

        .hero-desc {
            font-size: 0.9rem;
        }

        .hero-top-badge {
            flex-wrap: wrap;
        }

        .container {
            padding-left: 1rem;
            padding-right: 1rem;
        }

        .btn-lg {
            padding: 0.8rem 1.25rem;
            font-size: 0.95rem;
        }

        .post-list li {
            flex-direction: column;
            gap: 0.35rem;
        }

        .section-headline {
            font-size: 1.5rem;
        }
    }

    a:focus-visible,
    button:focus-visible {
        outline: 3px solid rgba(15, 118, 110, 0.4);
        outline-offset: 2px;
    }

/* roulang page: article */
:root {
    --brand: #0d9488;
    --brand-light: #14b8a6;
    --brand-dark: #0f766e;
    --accent: #10b981;
    --ink: #0f172a;
    --text: #334155;
    --muted: #64748b;
    --line: #e2e8f0;
    --bg-soft: #f1f5f9;
    --bg-deep: #0f172a;
    --radius: 1rem;
    --radius-sm: .75rem;
    --shadow: 0 4px 20px rgba(15, 23, 42, .08);
    --shadow-lg: 0 16px 40px rgba(15, 23, 42, .16);
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
    color: var(--text);
    background: #f8fafc;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}
* {
    box-sizing: border-box;
}
a {
    text-decoration: none;
    color: inherit;
    transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input,
textarea {
    font-family: inherit;
}
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

/* 导航 */
.main-nav {
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 50;
}
.logo-text {
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--ink);
    letter-spacing: -0.02em;
    white-space: nowrap;
}
.logo-text .logo-mark {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: .75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.15rem;
    background: linear-gradient(135deg, #0d9488, #10b981);
    box-shadow: 0 6px 18px rgba(13, 148, 136, .35);
    flex-shrink: 0;
}
.nav-desktop .nav-link {
    display: inline-flex;
    align-items: center;
    padding: .55rem 1rem;
    border-radius: .65rem;
    font-size: .95rem;
    font-weight: 600;
    color: var(--muted);
    transition: all .2s ease;
}
.nav-desktop .nav-link:hover {
    color: var(--brand-dark);
    background: rgba(13, 148, 136, .08);
}
.nav-desktop .nav-link.active {
    color: var(--brand-dark);
    background: rgba(13, 148, 136, .12);
}
.nav-toggle {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: .75rem;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    cursor: pointer;
}
.nav-toggle:hover {
    border-color: var(--brand-light);
    color: var(--brand);
}
.nav-mobile {
    display: none;
    padding: .5rem 1.25rem 1.25rem;
    border-top: 1px solid var(--line);
    background: #fff;
    flex-direction: column;
    gap: .35rem;
}
.nav-mobile.open {
    display: flex;
}
.nav-mobile .nav-link {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .7rem .9rem;
    border-radius: .65rem;
    font-weight: 600;
    color: var(--text);
}
.nav-mobile .nav-link:hover {
    background: rgba(13, 148, 136, .08);
    color: var(--brand-dark);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    font-weight: 700;
    border-radius: .8rem;
    padding: .8rem 1.35rem;
    font-size: .95rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .22s ease;
    line-height: 1.4;
}
.btn-primary {
    background: linear-gradient(135deg, #0d9488, #10b981);
    color: #fff;
    box-shadow: 0 6px 20px rgba(13, 148, 136, .3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(13, 148, 136, .4);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 14px rgba(13, 148, 136, .3);
}
.btn-outline {
    border-color: var(--line);
    color: var(--text);
    background: #fff;
}
.btn-outline:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: rgba(13, 148, 136, .04);
}
.btn-outline-light {
    border-color: rgba(255, 255, 255, .35);
    color: #fff;
    background: rgba(255, 255, 255, .06);
}
.btn-outline-light:hover {
    border-color: rgba(255, 255, 255, .7);
    background: rgba(255, 255, 255, .14);
    transform: translateY(-2px);
}
.btn-sm {
    padding: .5rem .9rem;
    font-size: .85rem;
    border-radius: .65rem;
}
.btn:focus-visible,
.nav-link:focus-visible,
.nav-toggle:focus-visible {
    outline: 3px solid rgba(13, 148, 136, .4);
    outline-offset: 2px;
}

/* Hero */
.article-hero {
    position: relative;
    background-color: var(--bg-deep);
    color: #fff;
    overflow: hidden;
    padding: 4rem 0 4.5rem;
}
.article-hero .hero-bg {
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    opacity: .35;
}
.article-hero .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, .85) 0%, rgba(15, 23, 42, .72) 55%, rgba(15, 23, 42, .9) 100%);
}
.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .45rem;
    font-size: .85rem;
    color: rgba(255, 255, 255, .6);
}
.breadcrumb a:hover {
    color: #fff;
}
.breadcrumb .sep {
    opacity: .5;
    font-size: .7rem;
}

/* 徽章 */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .3rem .85rem;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 700;
    background: rgba(16, 185, 129, .18);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, .3);
}
.badge-red {
    background: rgba(239, 68, 68, .16);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, .3);
}
.badge-dark {
    background: rgba(148, 163, 184, .15);
    color: #cbd5e1;
    border-color: rgba(148, 163, 184, .25);
}

/* 正文排版 */
.prose-article {
    font-size: 1rem;
    line-height: 1.9;
    color: var(--text);
    word-break: break-word;
}
.prose-article h2 {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--ink);
    margin: 2rem 0 1rem;
    padding-left: .85rem;
    border-left: 4px solid var(--brand);
    line-height: 1.5;
}
.prose-article h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--ink);
    margin: 1.6rem 0 .8rem;
}
.prose-article p {
    margin-bottom: 1.1rem;
}
.prose-article ul,
.prose-article ol {
    margin: 0 0 1.2rem;
    padding-left: 1.4rem;
}
.prose-article ul li,
.prose-article ol li {
    margin-bottom: .5rem;
}
.prose-article ul li::marker {
    color: var(--brand);
}
.prose-article blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.2rem;
    border-left: 4px solid var(--brand-light);
    background: rgba(13, 148, 136, .06);
    border-radius: 0 .75rem .75rem 0;
    color: var(--ink);
    font-weight: 500;
}
.prose-article img {
    border-radius: 1rem;
    box-shadow: var(--shadow);
    margin: 1.5rem 0;
}
.prose-article a {
    color: var(--brand-dark);
    font-weight: 600;
    border-bottom: 1px solid rgba(13, 148, 136, .3);
}
.prose-article a:hover {
    color: var(--brand);
    border-bottom-color: var(--brand);
}
.prose-article table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: .9rem;
}
.prose-article th,
.prose-article td {
    border: 1px solid var(--line);
    padding: .75rem 1rem;
    text-align: left;
}
.prose-article th {
    background: var(--bg-soft);
    font-weight: 700;
    color: var(--ink);
}

/* 文章卡片 / 信息卡 */
.article-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: all .25s ease;
}
.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.info-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.4rem;
    box-shadow: var(--shadow);
    transition: all .25s ease;
}
.info-card:hover {
    box-shadow: var(--shadow-lg);
}
.info-card h3 {
    font-size: 1rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.info-card h3 i {
    color: var(--brand);
}
.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .55rem 0;
    border-bottom: 1px dashed var(--line);
    font-size: .88rem;
}
.info-row:last-child {
    border-bottom: none;
}
.info-row .label {
    color: var(--muted);
    font-weight: 500;
}
.info-row .value {
    color: var(--ink);
    font-weight: 700;
    text-align: right;
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: .3rem .75rem;
    border-radius: 999px;
    font-size: .78rem;
    font-weight: 600;
    background: rgba(13, 148, 136, .08);
    color: var(--brand-dark);
    border: 1px solid rgba(13, 148, 136, .15);
    transition: all .2s ease;
}
.tag:hover {
    background: rgba(13, 148, 136, .16);
    border-color: rgba(13, 148, 136, .3);
}

/* 状态条 */
.status-bar {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .6rem .9rem;
    border-radius: .7rem;
    background: linear-gradient(90deg, rgba(13, 148, 136, .1), rgba(16, 185, 129, .04));
    border: 1px solid rgba(13, 148, 136, .18);
    font-size: .82rem;
    font-weight: 600;
    color: var(--brand-dark);
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #10b981;
    position: relative;
    flex-shrink: 0;
}
.status-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: 999px;
    border: 2px solid rgba(16, 185, 129, .45);
    animation: pulse-red 1.8s infinite;
}
@keyframes pulse-red {
    0% {
        transform: scale(.7);
        opacity: .8;
    }
    70% {
        transform: scale(1.4);
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

/* 深色面板 */
.dark-panel {
    background: linear-gradient(135deg, #0f172a, #0b1120);
    border-radius: 1.25rem;
    padding: 2rem;
    position: relative;
    overflow: hidden;
}
.dark-panel::before {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(13, 148, 136, .22), transparent 70%);
    top: -100px;
    right: -100px;
    pointer-events: none;
}
.stat-item {
    text-align: center;
    padding: 1.5rem 1rem;
    border-radius: 1rem;
    background: rgba(255, 255, 255, .04);
    border: 1px solid rgba(255, 255, 255, .08);
    transition: all .25s ease;
}
.stat-item:hover {
    background: rgba(255, 255, 255, .08);
    transform: translateY(-3px);
}
.stat-item .icon {
    font-size: 1.6rem;
    color: #2dd4bf;
    margin-bottom: .6rem;
}
.stat-item .num {
    font-size: 1.6rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
}
.stat-item .txt {
    font-size: .82rem;
    color: rgba(255, 255, 255, .55);
    margin-top: .3rem;
}

/* 延伸卡片 */
.explore-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all .25s ease;
}
.explore-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.explore-card .thumb {
    height: 180px;
    background-size: cover;
    background-position: center;
    position: relative;
}
.explore-card .thumb .overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0) 30%, rgba(15, 23, 42, .65) 100%);
}
.explore-card .body {
    padding: 1.3rem 1.4rem 1.5rem;
}
.explore-card .body h3 {
    font-size: 1.08rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: .4rem;
}
.explore-card .body p {
    font-size: .88rem;
    color: var(--muted);
    line-height: 1.6;
}

/* FAQ */
.faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 1rem;
    padding: 1.2rem 1.4rem;
    transition: all .22s ease;
}
.faq-item:hover {
    border-color: rgba(13, 148, 136, .35);
    box-shadow: var(--shadow);
}
.faq-item .q {
    display: flex;
    align-items: flex-start;
    gap: .7rem;
    font-weight: 800;
    color: var(--ink);
    font-size: .98rem;
}
.faq-item .q i {
    color: var(--brand);
    margin-top: .2rem;
    flex-shrink: 0;
}
.faq-item .a {
    margin-top: .7rem;
    padding-left: 1.7rem;
    color: var(--muted);
    font-size: .9rem;
    line-height: 1.7;
}

/* CTA */
.cta-card {
    background: linear-gradient(135deg, #0f172a, #134e4a);
    border-radius: 1.5rem;
    padding: 2.5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: #fff;
}
.cta-card::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(45, 212, 191, .25), transparent 70%);
    bottom: -140px;
    left: -100px;
    pointer-events: none;
}
.cta-card h2 {
    font-size: 1.6rem;
    font-weight: 800;
}
.cta-card p {
    color: rgba(255, 255, 255, .65);
    max-width: 600px;
    margin: .8rem auto 1.5rem;
    font-size: .95rem;
}

/* Footer */
.footer {
    background: #0f172a;
    color: rgba(255, 255, 255, .7);
}
.footer h4 {
    color: #fff;
    font-size: .95rem;
    font-weight: 700;
    margin-bottom: .9rem;
}
.footer ul {
    display: flex;
    flex-direction: column;
    gap: .45rem;
    font-size: .88rem;
}
.footer ul li a {
    color: rgba(255, 255, 255, .6);
}
.footer ul li a:hover {
    color: #2dd4bf;
}
.footer .copyright {
    border-top: 1px solid rgba(255, 255, 255, .1);
    margin-top: 2.5rem;
    padding-top: 1.4rem;
    text-align: center;
    font-size: .82rem;
    color: rgba(255, 255, 255, .4);
}

/* 未找到 */
.not-found-box {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 1.25rem;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--shadow);
}
.not-found-box .icon {
    font-size: 3rem;
    color: var(--brand);
    margin-bottom: 1rem;
}
.not-found-box h2 {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--ink);
    margin-bottom: .6rem;
}
.not-found-box p {
    color: var(--muted);
    margin-bottom: 1.4rem;
}

/* 响应式 */
@media (max-width: 1024px) {
    .nav-desktop {
        display: none !important;
    }
    .nav-toggle {
        display: inline-flex !important;
    }
}
@media (min-width: 1025px) {
    .nav-toggle {
        display: none !important;
    }
    .nav-mobile {
        display: none !important;
    }
}
@media (max-width: 768px) {
    .article-hero {
        padding: 2.5rem 0 3rem;
    }
    .prose-article h2 {
        font-size: 1.2rem;
    }
    .cta-card {
        padding: 2rem 1.2rem;
    }
    .dark-panel {
        padding: 1.4rem;
    }
}
@media (max-width: 520px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    .btn {
        width: 100%;
    }
    .logo-text {
        font-size: 1.15rem;
    }
    .breadcrumb {
        font-size: .78rem;
    }
    .info-row {
        font-size: .82rem;
        flex-direction: column;
        align-items: flex-start;
        gap: .2rem;
    }
}

/* roulang page: category1 */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-soft: rgba(13, 148, 136, 0.1);
  --accent: #10b981;
  --danger: #ef4444;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --bg: #f8fafc;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --radius-lg: 1rem;
  --radius-md: 0.75rem;
  --radius-sm: 0.5rem;
  --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== 顶部信息条 ===== */
.top-bar {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.78rem;
}
.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}
.top-dot {
  width: 7px;
  height: 7px;
  background: #ef4444;
  border-radius: 9999px;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
  animation: pulse-dot 2s ease-in-out infinite;
  display: inline-block;
  flex-shrink: 0;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

/* ===== 主导航 ===== */
.main-nav {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 1px 8px rgba(15, 23, 42, 0.04);
}
.logo-text {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: var(--dark);
  transition: opacity 0.2s ease;
  line-height: 1.2;
}
.logo-text:hover {
  opacity: 0.85;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 0.95rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 0.55rem;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  background: #f1f5f9;
  color: var(--dark);
}
.nav-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}
.nav-toggle {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--dark);
  cursor: pointer;
  padding: 0.5rem 0.6rem;
  border-radius: 0.5rem;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: #f1f5f9;
}
.nav-mobile-open {
  display: flex !important;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0 1rem;
  border-top: 1px solid var(--border);
}
.nav-mobile-link {
  display: flex;
  align-items: center;
  padding: 0.65rem 0.75rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 0.5rem;
  transition: var(--transition);
}
.nav-mobile-link:hover {
  background: #f1f5f9;
  color: var(--dark);
}
.nav-mobile-link.active {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-weight: 600;
  border-radius: 0.65rem;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1.4;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: linear-gradient(135deg, #0d9488, #059669);
  color: #ffffff !important;
  box-shadow: 0 4px 16px rgba(13, 148, 136, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(13, 148, 136, 0.35);
  background: linear-gradient(135deg, #0f766e, #047857);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(13, 148, 136, 0.25);
}
.btn-ghost-light {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  color: #ffffff;
  backdrop-filter: blur(4px);
}
.btn-ghost-light:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.4);
}
.btn-sm {
  padding: 0.55rem 1.1rem;
  font-size: 0.85rem;
}
.btn-lg {
  padding: 0.9rem 1.8rem;
  font-size: 0.95rem;
}

/* ===== Banner ===== */
.page-banner {
  position: relative;
  overflow: hidden;
  background-color: var(--dark);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.55);
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.55);
  transition: var(--transition);
}
.breadcrumb a:hover {
  color: #ffffff;
}
.breadcrumb .fa-angle-right {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.3);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.35rem 0.8rem;
  border-radius: 9999px;
  backdrop-filter: blur(4px);
}
.banner-status {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.8rem;
  padding: 0.7rem 1.2rem;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(6px);
}
.banner-status .banner-icon {
  color: var(--accent);
  margin-right: 0.35rem;
}

/* ===== 通用板块 ===== */
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--dark);
}
.section-subtitle {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.7;
}
.section-overline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
}
.section-overline .red-dot {
  width: 7px;
  height: 7px;
  background: var(--danger);
  border-radius: 9999px;
  display: inline-block;
}

/* ===== 指标卡 / 统计 ===== */
.stat-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.4rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.stat-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
}
.stat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: rgba(13, 148, 136, 0.25);
}
.stat-card:hover::after {
  opacity: 1;
}
.stat-icon {
  width: 2.6rem;
  height: 2.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.7rem;
  font-size: 1.1rem;
  margin-bottom: 1rem;
}
.stat-num {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--dark);
  line-height: 1.1;
}
.stat-num span {
  font-size: 1rem;
  font-weight: 700;
  color: var(--muted);
  margin-left: 0.2rem;
}
.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

/* ===== 标签 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 700;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 9999px;
  padding: 0.25rem 0.7rem;
  transition: var(--transition);
}
.tag-muted {
  background: #f1f5f9;
  color: var(--muted);
}
.tag-muted:hover {
  background: #e2e8f0;
  color: var(--dark);
}

/* ===== 指南卡片 ===== */
.guide-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 148, 136, 0.3);
}
.guide-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--dark);
}
.guide-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.guide-card:hover .guide-cover img {
  transform: scale(1.05);
}
.cover-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  background: rgba(15, 23, 42, 0.82);
  backdrop-filter: blur(6px);
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.3rem 0.7rem;
  border-radius: 0.45rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.guide-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.guide-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--dark);
  transition: color 0.2s ease;
  margin-top: 0.7rem;
}
.guide-title a:hover {
  color: var(--primary);
}
.guide-excerpt {
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.65;
}
.guide-more {
  margin-top: auto;
  padding-top: 1rem;
  display: inline-flex;
  align-items: center;
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--primary);
  transition: var(--transition);
}
.guide-more:hover {
  color: var(--primary-dark);
}
.guide-more .fa-arrow-right {
  margin-left: 0.4rem;
  transition: transform 0.25s ease;
}
.guide-more:hover .fa-arrow-right {
  transform: translateX(3px);
}

/* ===== 四步流程深色面板 ===== */
.steps-section {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.steps-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.step-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-lg);
  padding: 1.8rem 1.5rem;
  position: relative;
  transition: var(--transition);
  height: 100%;
}
.step-card:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(13, 148, 136, 0.45);
  transform: translateY(-4px);
}
.step-num {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  font-size: 2.6rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: rgba(255, 255, 255, 0.09);
  line-height: 1;
}
.step-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
  background: rgba(16, 185, 129, 0.12);
  border-radius: 0.75rem;
  margin-bottom: 1.1rem;
}
.step-card h3 {
  color: #ffffff;
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
}
.step-time {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
  margin-top: 0.3rem;
}
.step-desc {
  margin-top: 0.6rem;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.84rem;
  line-height: 1.65;
}

/* ===== 功能速查 ===== */
.feature-row {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  display: flex;
  gap: 1rem;
  transition: var(--transition);
}
.feature-row:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(13, 148, 136, 0.25);
  transform: translateY(-3px);
}
.feature-icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.75rem;
  font-size: 1.15rem;
  color: var(--primary);
  background: var(--primary-soft);
}
.feature-row h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
}
.feature-row p {
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.6;
  margin-top: 0.35rem;
}
.feature-path {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.7rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--primary-dark);
  background: var(--primary-soft);
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 9999px;
  display: inline-block;
  flex-shrink: 0;
}

/* ===== FAQ ===== */
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #ffffff;
  transition: var(--transition);
  margin-bottom: 0.75rem;
  overflow: hidden;
}
.faq-item:hover {
  border-color: rgba(13, 148, 136, 0.3);
  box-shadow: var(--shadow);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.05rem 1.25rem;
  font-weight: 600;
  font-size: 0.94rem;
  color: var(--dark);
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary:hover {
  color: var(--primary);
}
.faq-item summary .fa-chevron-down {
  color: var(--muted);
  transition: transform 0.3s ease, color 0.3s ease;
  font-size: 0.8rem;
  flex-shrink: 0;
}
.faq-item[open] summary {
  color: var(--primary);
}
.faq-item[open] summary .fa-chevron-down {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-answer {
  padding: 0 1.25rem 1.05rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  overflow: hidden;
  background-color: var(--dark);
}
.cta-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 1.25rem;
  padding: 3rem 2rem;
  backdrop-filter: blur(6px);
  text-align: center;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.6);
}
.footer h4 {
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.footer ul {
  list-style: none;
}
.footer ul li {
  margin-bottom: 0.55rem;
  font-size: 0.84rem;
}
.footer ul li a {
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}
.footer ul li a:hover {
  color: #ffffff;
}
.copyright {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .container {
    padding: 0 1.15rem;
  }
  .banner-status {
    flex-wrap: wrap;
    gap: 0.6rem 1rem;
  }
}

@media (max-width: 520px) {
  .logo-text {
    font-size: 1.15rem;
  }
  .logo-text .w-10 {
    width: 2.25rem;
    height: 2.25rem;
    font-size: 1rem;
  }
  .section-title {
    font-size: 1.45rem;
  }
  .stat-card {
    padding: 1.2rem 1rem;
  }
  .stat-num {
    font-size: 1.5rem;
  }
  .guide-body {
    padding: 1.15rem;
  }
  .step-card {
    padding: 1.4rem 1.1rem;
  }
  .feature-row {
    padding: 1.1rem 1.1rem;
    flex-direction: column;
  }
  .feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1rem;
  }
}

/* roulang page: category2 */
:root {
            --primary: #0d9488;
            --primary-dark: #0f766e;
            --accent: #10b981;
            --ink: #0f172a;
            --ink-soft: #475569;
            --muted: #94a3b8;
            --line: #e2e8f0;
            --bg-soft: #f8fafc;
            --card-bg: #ffffff;
            --radius: 1rem;
            --radius-sm: 0.625rem;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 24px 50px rgba(15, 23, 42, 0.12);
            --transition: all 0.25s ease;
            --section-space: 5.5rem;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', sans-serif;
            background: #fff;
            color: var(--ink);
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* ========== 顶部信息条 ========== */
        .topbar {
            background: #0b1220;
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            letter-spacing: 0.02em;
        }

        /* ========== 主导航 ========== */
        .main-nav {
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--line);
            position: sticky;
            top: 0;
            z-index: 50;
        }

        .logo-text {
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--ink);
            letter-spacing: -0.02em;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 0.5rem 0.9rem;
            font-weight: 500;
            font-size: 0.92rem;
            color: var(--ink-soft);
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(13, 148, 136, 0.08);
        }

        .nav-link.active {
            color: var(--primary);
            background: rgba(13, 148, 136, 0.1);
            font-weight: 600;
        }

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

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: 0.75rem;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #0d9488 0%, #10b981 100%);
            color: #fff;
            border: none;
            box-shadow: 0 4px 14px rgba(13, 148, 136, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(13, 148, 136, 0.45);
            filter: brightness(1.05);
        }

        .btn-outline {
            border-color: rgba(255, 255, 255, 0.35);
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(13, 148, 136, 0.4);
            outline-offset: 2px;
        }

        /* ========== Banner ========== */
        .page-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            padding: 7rem 0 5rem;
            color: #fff;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 20, 25, 0.92) 0%, rgba(8, 47, 50, 0.75) 55%, rgba(13, 148, 136, 0.35) 100%);
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            padding: 0.4rem 1rem;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.03em;
            backdrop-filter: blur(6px);
        }

        .breadcrumb a:hover {
            color: #5eead4;
        }

        /* ========== 板块通用 ========== */
        .section {
            padding: var(--section-space) 0;
        }

        .section-head {
            margin-bottom: 3rem;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.14em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(13, 148, 136, 0.1);
            padding: 0.3rem 1rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.2vw, 2.4rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            color: var(--ink);
            margin-bottom: 0.6rem;
        }

        .section-sub {
            color: var(--ink-soft);
            font-size: 1.02rem;
            max-width: 44rem;
            line-height: 1.8;
        }

        /* ========== 卡片 ========== */
        .icon-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 2rem 1.6rem;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .icon-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .icon-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(13, 148, 136, 0.3);
        }

        .icon-card:hover::after {
            opacity: 1;
        }

        .icon-card .icon-wrap {
            width: 3.4rem;
            height: 3.4rem;
            border-radius: 0.9rem;
            background: linear-gradient(135deg, rgba(13, 148, 136, 0.1), rgba(16, 185, 129, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 1.2rem;
        }

        .icon-card h3 {
            font-size: 1.12rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }

        .icon-card p {
            color: var(--ink-soft);
            font-size: 0.92rem;
            line-height: 1.7;
        }

        /* ========== 分类速览卡片 ========== */
        .topic-card {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: 1.25rem;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .topic-card .cover {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

        .topic-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .topic-card:hover .cover img {
            transform: scale(1.05);
        }

        .topic-card .cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, 0) 50%, rgba(0, 0, 0, 0.15) 100%);
        }

        .topic-card .body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.05em;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            background: rgba(13, 148, 136, 0.1);
            color: var(--primary);
            margin-bottom: 0.8rem;
        }

        /* ========== 文章列表 ========== */
        .article-row {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: 1.2rem;
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }

        .article-row:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: rgba(13, 148, 136, 0.25);
        }

        .article-row .num {
            font-size: 2rem;
            font-weight: 800;
            color: rgba(13, 148, 136, 0.2);
            line-height: 1;
            font-family: 'Georgia', serif;
        }

        .article-row h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            transition: var(--transition);
        }

        .article-row:hover h3 {
            color: var(--primary);
        }

        .article-row p {
            color: var(--ink-soft);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .article-row .meta {
            font-size: 0.78rem;
            color: var(--muted);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        /* ========== 深度解析 ========== */
        .deep-section {
            background: #0b1220;
            color: #fff;
            border-radius: 2rem;
            overflow: hidden;
            position: relative;
        }

        .deep-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .deep-section .deep-img {
            border-radius: 1.2rem;
            overflow: hidden;
            box-shadow: 0 20px 45px rgba(0, 0, 0, 0.3);
        }

        /* ========== 数据统计 ========== */
        .stat-block {
            text-align: center;
            padding: 2rem 1rem;
        }

        .stat-block .value {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.1;
            background: linear-gradient(135deg, #0d9488, #10b981);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-block .label {
            color: var(--ink-soft);
            font-size: 0.92rem;
            margin-top: 0.5rem;
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--line);
            border-radius: 1rem;
            padding: 1.6rem 1.8rem;
            transition: var(--transition);
            margin-bottom: 0.8rem;
        }

        .faq-item:hover {
            border-color: rgba(13, 148, 136, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            font-weight: 700;
            font-size: 1.02rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 0.7rem;
            list-style: none;
            line-height: 1.4;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 400;
            color: var(--primary);
            font-size: 0.9rem;
        }

        .faq-item p {
            margin-top: 1rem;
            color: var(--ink-soft);
            font-size: 0.93rem;
            line-height: 1.8;
            padding-left: 1.6rem;
        }

        /* ========== CTA ========== */
        .cta-box {
            background: linear-gradient(135deg, #0f172a 0%, #0d9488 140%);
            border-radius: 2rem;
            padding: 4rem 3rem;
            position: relative;
            overflow: hidden;
            text-align: center;
            color: #fff;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -10%;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-box .title {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            margin-bottom: 0.8rem;
            letter-spacing: -0.02em;
        }

        .cta-box .desc {
            color: rgba(255, 255, 255, 0.72);
            max-width: 36rem;
            margin: 0 auto 2rem;
            font-size: 1rem;
        }

        /* ========== 页脚 ========== */
        .footer {
            background: #0b1220;
            color: #fff;
        }

        .footer h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }

        .footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer ul li {
            margin-bottom: 0.6rem;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer ul li a:hover {
            color: #5eead4;
        }

        .footer .copyright {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 3rem;
            padding-top: 1.5rem;
            text-align: center;
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.82rem;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .page-banner {
                padding: 5.5rem 0 4rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-space: 4rem;
            }

            .main-nav .container {
                flex-wrap: wrap;
                row-gap: 0.4rem;
                padding-top: 0.7rem;
                padding-bottom: 0.7rem;
            }

            .nav-desktop {
                order: 3;
                width: 100%;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                padding-bottom: 0.4rem;
                display: flex;
                scrollbar-width: none;
            }

            .nav-desktop::-webkit-scrollbar {
                display: none;
            }

            .nav-desktop .flex {
                gap: 0.2rem;
            }

            .nav-link {
                padding: 0.45rem 0.75rem;
                font-size: 0.82rem;
            }

            .section-head {
                margin-bottom: 2rem;
            }

            .cta-box {
                padding: 2.6rem 1.4rem;
                border-radius: 1.4rem;
            }

            .stat-block .value {
                font-size: 2rem;
            }

            .deep-section {
                border-radius: 1.4rem;
            }

            .topbar .container {
                flex-direction: column;
                gap: 0.2rem;
                padding-top: 0.35rem;
                padding-bottom: 0.35rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                padding: 4rem 0 2.8rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .breadcrumb {
                font-size: 0.74rem;
                padding: 0.35rem 0.8rem;
            }

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

            .topbar span:last-child {
                font-size: 0.72rem;
            }

            .article-row .num {
                font-size: 1.5rem;
            }
        }