/* roulang page: index */
:root {
    --color-primary: #1e4a73;
    --color-primary-dark: #16385a;
    --color-primary-light: #3a7ab0;
    --color-accent: #d4a550;
    --color-accent-dark: #b8893a;
    --color-bg: #f7f6f3;
    --color-bg-white: #ffffff;
    --color-text: #2d3748;
    --color-text-light: #718096;
    --color-border: #e2e8f0;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 32px rgba(0,0,0,.12);
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input {
    font-family: inherit;
    border: none;
    outline: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Topbar ===== */
.topbar {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,.9);
    font-size: 13px;
    position: relative;
    z-index: 101;
}
.topbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 36px;
}
.topbar-news {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    overflow: hidden;
}
.topbar-news i {
    color: var(--color-accent);
}
.topbar-service {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    font-size: 13px;
}

/* ===== Header ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--color-border);
}
.header-main {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 14px 24px;
    max-width: 1280px;
    margin: 0 auto;
}
.brand-logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 4px;
    line-height: 1.2;
}
.brand-dot {
    color: var(--color-accent);
    font-size: 28px;
}
.header-search {
    flex: 1;
    max-width: 420px;
    display: flex;
    align-items: center;
    background: #f1f5f9;
    border-radius: 40px;
    padding: 6px 6px 6px 18px;
    border: 1px solid transparent;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.header-search:focus-within {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 3px rgba(58,122,176,.12);
    background: #fff;
}
.header-search input {
    flex: 1;
    background: transparent;
    font-size: 14px;
    color: var(--color-text);
}
.header-search button {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--color-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    transition: background .2s ease;
}
.header-search button:hover {
    background: var(--color-primary-light);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-md);
    font-weight: 600;
    line-height: 1;
    transition: all .2s ease;
    border: 2px solid transparent;
    text-decoration: none;
}
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: 0 6px 16px rgba(30,74,115,.28);
    transform: translateY(-1px);
}
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(30,74,115,.18);
}
.btn-light {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn-light:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(212,165,80,.4);
}
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
}
.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: 14px;
}

.nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: transparent;
    color: var(--color-primary);
    font-size: 20px;
    border: 1px solid var(--color-border);
    align-items: center;
    justify-content: center;
}

/* ===== Header Nav ===== */
.header-nav {
    background: #fff;
    border-top: 1px solid var(--color-border);
}
.nav-inner {
    display: flex;
    align-items: center;
    gap: 4px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    overflow-x: auto;
    scrollbar-width: none;
}
.nav-inner::-webkit-scrollbar {
    display: none;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 13px 16px;
    font-size: 15px;
    font-weight: 500;
    color: #475569;
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    position: relative;
    transition: color .2s ease, border-color .2s ease;
}
.nav-link:hover {
    color: var(--color-primary);
}
.nav-link.active {
    color: var(--color-primary);
    font-weight: 700;
    border-bottom-color: var(--color-accent);
}
.nav-trends {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    padding: 0 8px;
    font-size: 13px;
    white-space: nowrap;
}
.trend-label {
    color: var(--color-accent-dark);
    font-weight: 600;
    margin-right: 2px;
}
.nav-trends a {
    color: var(--color-text-light);
    background: #f1f5f9;
    padding: 4px 10px;
    border-radius: 20px;
    transition: all .2s ease;
}
.nav-trends a:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 96px 0 80px;
    color: #fff;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(16,42,69,.92) 0%, rgba(30,74,115,.78) 55%, rgba(30,74,115,.55) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(212,165,80,.92);
    color: #12283f;
    font-weight: 700;
    font-size: 13px;
    padding: 7px 16px;
    border-radius: 40px;
    margin-bottom: 22px;
    letter-spacing: .3px;
}
.hero h1 {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 18px;
    color: #fff;
    text-shadow: 0 2px 20px rgba(0,0,0,.25);
}
.hero p {
    font-size: 17px;
    line-height: 1.7;
    color: rgba(255,255,255,.88);
    max-width: 560px;
    margin-bottom: 30px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    margin-bottom: 48px;
}
.hero-stats {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}
.stat-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.stat-num {
    font-size: 28px;
    font-weight: 800;
    color: var(--color-accent);
    line-height: 1.2;
}
.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,.78);
}

/* ===== Section ===== */
.section {
    padding: 72px 0;
}
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 44px;
}
.section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--color-accent-dark);
    text-transform: uppercase;
    margin-bottom: 10px;
}
.section-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--color-primary-dark);
    line-height: 1.25;
    letter-spacing: -.5px;
    margin-bottom: 14px;
}
.section-subtitle {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== Feature Cards ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, #e8f0f8, #d4e5f4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    font-size: 24px;
    margin-bottom: 20px;
}
.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== Category Cards ===== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}
.category-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: transform .25s ease, box-shadow .25s ease;
}
.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.category-img {
    position: relative;
    height: 220px;
    overflow: hidden;
}
.category-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.category-card:hover .category-img img {
    transform: scale(1.05);
}
.category-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(16,42,69,.35));
}
.category-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.category-tag {
    display: inline-flex;
    align-self: flex-start;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .5px;
    color: var(--color-accent-dark);
    background: rgba(212,165,80,.12);
    padding: 5px 12px;
    border-radius: 30px;
    margin-bottom: 12px;
}
.category-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}
.category-content p {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.65;
    margin-bottom: 20px;
    flex: 1;
}
.category-btn {
    align-self: flex-start;
}

/* ===== News Panel ===== */
.news-panel {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    padding: 40px;
}
.news-list {
    display: flex;
    flex-direction: column;
}
.news-item {
    display: grid;
    grid-template-columns: 80px 1fr 100px;
    align-items: center;
    gap: 20px;
    padding: 18px 8px;
    border-bottom: 1px solid #edf2f7;
    transition: background .2s ease, padding-left .2s ease;
}
.news-item:last-child {
    border-bottom: none;
}
.news-item:hover {
    background: #f8fafc;
    padding-left: 14px;
}
.news-cat {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary);
    background: #eef4fa;
    padding: 4px 10px;
    border-radius: 20px;
    text-align: center;
    justify-self: start;
    white-space: nowrap;
}
.news-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary-dark);
    line-height: 1.4;
    transition: color .2s ease;
}
.news-item:hover .news-title {
    color: var(--color-primary-light);
}
.news-desc {
    font-size: 14px;
    color: var(--color-text-light);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}
.news-time {
    font-size: 13px;
    color: #a0aec0;
    text-align: right;
    white-space: nowrap;
}
.news-empty {
    text-align: center;
    color: var(--color-text-light);
    padding: 40px 0;
    font-size: 15px;
}
.news-more {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

/* ===== Steps ===== */
.steps-container {
    background: var(--color-primary-dark);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.steps-container::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: rgba(212,165,80,.12);
}
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 36px;
    position: relative;
    z-index: 1;
}
.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px 16px;
}
.step-num {
    font-size: 48px;
    font-weight: 800;
    color: rgba(212,165,80,.55);
    line-height: 1;
    margin-bottom: 14px;
}
.step-content h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}
.step-content p {
    font-size: 14px;
    color: rgba(255,255,255,.8);
    line-height: 1.6;
}

/* ===== Recommend Grid ===== */
.recommend-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.recommend-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    transition: transform .25s ease, box-shadow .25s ease;
}
.recommend-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}
.recommend-img {
    height: 180px;
    overflow: hidden;
    position: relative;
}
.recommend-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .45s ease;
}
.recommend-card:hover .recommend-img img {
    transform: scale(1.06);
}
.recommend-body {
    padding: 24px;
}
.recommend-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-accent-dark);
    background: rgba(212,165,80,.1);
    padding: 4px 12px;
    border-radius: 30px;
    margin-bottom: 10px;
}
.recommend-body h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary-dark);
    line-height: 1.45;
    margin-bottom: 6px;
}
.recommend-body p {
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow .2s ease;
}
.faq-item:hover {
    box-shadow: var(--shadow-md);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary-dark);
    background: transparent;
    width: 100%;
    text-align: left;
    transition: background .2s ease;
}
.faq-question:hover {
    background: #f8fafc;
}
.faq-question i {
    color: var(--color-accent);
    font-size: 16px;
    transition: transform .3s ease;
    flex-shrink: 0;
}
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}
.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* ===== CTA ===== */
.cta-section {
    padding: 80px 0;
}
.cta-box {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
    color: #fff;
}
.cta-box::before {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -80px;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    border: 30px solid rgba(255,255,255,.04);
}
.cta-box::after {
    content: '';
    position: absolute;
    top: -40px;
    right: 20px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 20px solid rgba(212,165,80,.15);
}
.cta-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
    position: relative;
    z-index: 1;
}
.cta-text {
    font-size: 16px;
    color: rgba(255,255,255,.85);
    max-width: 560px;
    margin: 0 auto 28px;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}
.cta-btn {
    position: relative;
    z-index: 1;
}

/* ===== Footer ===== */
.site-footer {
    background: #0f1f33;
    color: rgba(255,255,255,.72);
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding: 64px 24px 40px;
    max-width: 1280px;
    margin: 0 auto;
}
.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.footer-logo {
    font-size: 21px;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 4px;
}
.footer-logo .brand-dot {
    color: var(--color-accent);
}
.footer-desc {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255,255,255,.55);
    max-width: 320px;
}
.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 6px;
    font-size: 14px;
}
.footer-contact a {
    color: rgba(255,255,255,.65);
    transition: color .2s ease;
}
.footer-contact a:hover {
    color: var(--color-accent);
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: .3px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-links a {
    color: rgba(255,255,255,.6);
    font-size: 14px;
    transition: color .2s ease, padding-left .2s ease;
}
.footer-links a:hover {
    color: var(--color-accent);
    padding-left: 4px;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 22px 24px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.45);
}
.footer-bottom a {
    color: rgba(255,255,255,.6);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 40px;
    }
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .recommend-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .steps-grid {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .topbar-service {
        display: none;
    }
    .header-main {
        padding: 12px 16px;
        gap: 12px;
    }
    .brand-logo {
        font-size: 20px;
    }
    .header-search {
        display: none;
    }
    .nav-toggle {
        display: flex;
    }
    .header-nav {
        display: none;
        border-top: 1px solid var(--color-border);
        box-shadow: 0 8px 20px rgba(0,0,0,.06);
    }
    .header-nav.open {
        display: block;
    }
    .nav-inner {
        flex-direction: column;
        align-items: stretch;
        padding: 8px 16px;
        gap: 2px;
        overflow: visible;
    }
    .nav-link {
        padding: 14px 10px;
        border-bottom: 1px solid #edf2f7;
        border-left: 3px solid transparent;
    }
    .nav-link.active {
        border-left-color: var(--color-accent);
        border-bottom-color: transparent;
    }
    .nav-trends {
        margin-left: 0;
        padding: 12px 0;
        flex-wrap: wrap;
    }
    .hero {
        padding: 72px 0 56px;
    }
    .hero h1 {
        font-size: 32px;
    }
    .hero p {
        font-size: 15px;
    }
    .hero-stats {
        gap: 20px;
    }
    .stat-num {
        font-size: 22px;
    }
    .section {
        padding: 56px 0;
    }
    .section-title {
        font-size: 28px;
    }
    .feature-grid,
    .category-grid,
    .recommend-grid,
    .steps-grid {
        grid-template-columns: 1fr;
    }
    .category-grid {
        gap: 20px;
    }
    .container,
    .header-main,
    .nav-inner {
        padding-left: 16px;
        padding-right: 16px;
    }
    .news-item {
        grid-template-columns: 70px 1fr;
        gap: 12px;
    }
    .news-time {
        display: none;
    }
    .news-panel {
        padding: 24px;
    }
    .steps-container {
        padding: 40px 24px;
    }
    .faq-question {
        padding: 16px 18px;
        font-size: 15px;
    }
    .cta-box {
        padding: 40px 24px;
    }
    .cta-title {
        font-size: 26px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
        padding: 48px 16px 32px;
    }
}

@media (max-width: 520px) {
    .hero h1 {
        font-size: 27px;
    }
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .brand-logo {
        font-size: 18px;
    }
    .header-main {
        padding: 10px 12px;
    }
    .section {
        padding: 44px 0;
    }
    .section-title {
        font-size: 24px;
    }
    .feature-card {
        padding: 26px 20px;
    }
    .news-item {
        grid-template-columns: 1fr;
        gap: 6px;
    }
    .news-cat {
        justify-self: start;
    }
    .news-panel {
        padding: 18px;
    }
    .cta-box {
        padding: 32px 20px;
    }
    .cta-title {
        font-size: 22px;
    }
    .footer-grid {
        gap: 24px;
        padding: 40px 16px 28px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: .01ms !important;
        transition-duration: .01ms !important;
    }
}

/* roulang page: category1 */
:root {
            --primary: #1a5cff;
            --primary-dark: #0f3fbb;
            --primary-light: #e8eeff;
            --accent: #f5a623;
            --surface: #f7f8fc;
            --ink: #0f172a;
            --ink-light: #475569;
            --ink-lighter: #94a3b8;
            --line: #e2e8f0;
            --radius: 16px;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 4px 16px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.10);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: #ffffff;
            color: var(--ink);
            line-height: 1.6;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(26, 92, 255, 0.4);
            outline-offset: 2px;
            border-radius: 4px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }
        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1320px;
            margin: 0 auto;
            padding: 14px 24px;
            gap: 24px;
        }
        .brand-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--ink);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 2px;
        }
        .brand-dot {
            color: var(--primary);
            margin-left: 2px;
        }
        .header-search {
            flex: 1;
            max-width: 420px;
            display: flex;
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 8px 8px 8px 16px;
            transition: all 0.25s ease;
        }
        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 92, 255, 0.12);
            background: #fff;
        }
        .header-search input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 0.9rem;
            color: var(--ink);
            min-width: 0;
        }
        .header-search input::placeholder {
            color: var(--ink-lighter);
        }
        .header-search button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.25s ease;
            flex-shrink: 0;
        }
        .header-search button:hover {
            background: var(--primary-dark);
        }
        .header-nav {
            border-top: 1px solid var(--line);
            background: #fff;
        }
        .nav-inner {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
        }
        .nav-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-block;
            padding: 12px 16px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ink-light);
            border-bottom: 3px solid transparent;
            white-space: nowrap;
            transition: color 0.2s ease, border-color 0.2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }
        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
            font-weight: 600;
        }
        .nav-trends {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px 0;
            font-size: 0.85rem;
            white-space: nowrap;
        }
        .trend-label {
            color: var(--ink-lighter);
        }
        .nav-trends a {
            color: var(--ink-light);
            font-weight: 500;
        }
        .nav-trends a:hover {
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--line);
            border-radius: 8px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            color: var(--ink);
            cursor: pointer;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 10px;
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 10px 20px;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(26, 92, 255, 0.25);
        }
        .btn-outline {
            border: 1.5px solid var(--primary);
            background: transparent;
            color: var(--primary);
            padding: 10px 20px;
        }
        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: 8px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }
        .section {
            padding: 72px 0;
        }
        .section-head {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.05em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 10px;
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 999px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--ink);
            margin: 12px 0 12px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1.05rem;
            color: var(--ink-light);
            line-height: 1.7;
        }
        .card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, #f0f4ff 0%, #e8eeff 45%, #dce6ff 100%);
            padding: 64px 0 56px;
            overflow: hidden;
            border-bottom: 1px solid var(--line);
        }
        .page-banner-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
        }
        .page-banner-content {
            position: relative;
            z-index: 1;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }
        .page-banner-content h1 {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--ink);
            margin: 16px 0 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .page-banner-content p {
            font-size: 1.05rem;
            color: var(--ink-light);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .step-list {
            display: grid;
            gap: 24px;
            margin-top: 40px;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            box-shadow: 0 6px 16px rgba(26, 92, 255, 0.25);
        }
        .step-content {
            padding-top: 2px;
        }
        .step-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--ink);
        }
        .step-content p {
            color: var(--ink-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .tip-box {
            background: #fffbeb;
            border: 1px solid #fde68a;
            border-radius: 12px;
            padding: 16px 20px;
            display: flex;
            gap: 12px;
            align-items: flex-start;
        }
        .tip-box i {
            color: var(--accent);
            font-size: 1.2rem;
            margin-top: 2px;
        }
        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 24px 28px;
            background: #fff;
            transition: box-shadow 0.25s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ink);
            margin-bottom: 8px;
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }
        .faq-item h3 i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .faq-item p {
            color: var(--ink-light);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
            padding-left: 28px;
        }
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 60px 0 0;
            margin-top: 40px;
        }
        .footer-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px 40px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
        }
        .footer-logo {
            font-size: 1.5rem;
            font-weight: 800;
            color: #f1f5f9;
            letter-spacing: -0.02em;
        }
        .footer-desc {
            color: #94a3b8;
            font-size: 0.92rem;
            line-height: 1.7;
            margin: 16px 0 20px;
            max-width: 360px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 0.88rem;
            color: #94a3b8;
        }
        .footer-col h4 {
            color: #f1f5f9;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: 0.88rem;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.82rem;
            color: #64748b;
        }
        .footer-bottom p {
            margin: 0;
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .step-list {
                grid-template-columns: 1fr;
            }
            .page-banner-content h1 {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .header-main {
                padding: 12px 16px;
                gap: 12px;
            }
            .brand-logo {
                font-size: 1.1rem;
            }
            .header-search {
                display: none;
            }
            .nav-toggle {
                display: flex;
                flex-shrink: 0;
            }
            .header-nav {
                display: none;
            }
            .header-nav.open {
                display: block;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--line);
                box-shadow: var(--shadow-lg);
                max-height: calc(100vh - 64px);
                overflow-y: auto;
                z-index: 40;
            }
            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                padding: 12px 16px;
                gap: 0;
                overflow: visible;
            }
            .nav-link {
                border-bottom: 1px solid var(--line);
                border-left: 3px solid transparent;
                border-radius: 0;
                padding: 14px 16px;
            }
            .nav-link.active {
                border-bottom: 1px solid var(--line);
                border-left-color: var(--primary);
                background: var(--primary-light);
            }
            .nav-link.active:hover {
                border-bottom-color: var(--line);
            }
            .nav-trends {
                margin-left: 0;
                padding: 12px 16px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .page-banner {
                padding: 48px 0 40px;
            }
            .page-banner-content h1 {
                font-size: 1.7rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .step-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-brand {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .header-main {
                padding: 10px 14px;
            }
            .btn-sm {
                display: none !important;
            }
            .page-banner-content h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .faq-item {
                padding: 18px 20px;
            }
            .faq-item p {
                padding-left: 0;
            }
            .faq-item h3 {
                font-size: 0.98rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #0b1f3a;
            --primary-dark: #071527;
            --primary-light: #1a365d;
            --accent: #d4a853;
            --accent-dark: #b8923f;
            --accent-light: #e8c987;
            --bg: #f5f7fa;
            --bg-white: #ffffff;
            --text: #1f2937;
            --text-muted: #6b7280;
            --border: #e5e7eb;
            --radius: 12px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
            --site-container: 1200px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        .site-container {
            max-width: var(--site-container);
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--bg-white);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
        }
        .header-main {
            max-width: var(--site-container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 24px;
            min-height: 64px;
        }
        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
        }
        .brand-logo:hover {
            opacity: 0.92;
        }
        .brand-dot {
            color: var(--accent);
            font-size: 28px;
            line-height: 1;
        }
        .header-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 7px 14px;
            width: 300px;
            transition: all 0.3s;
        }
        .header-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.16);
            background: #fff;
        }
        .header-search input {
            flex: 1;
            background: transparent;
            font-size: 14px;
            color: var(--text);
        }
        .header-search input::placeholder {
            color: #9ca3af;
        }
        .header-search button {
            padding: 4px 8px;
            color: var(--text-muted);
            border-radius: 50%;
            transition: all 0.3s;
        }
        .header-search button:hover {
            color: var(--accent);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 14px;
            transition: all 0.3s;
            border: 1px solid transparent;
            line-height: 1.5;
        }
        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
            border-radius: 6px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(11, 31, 58, 0.25);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(212, 168, 83, 0.35);
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--primary);
            padding: 6px;
        }
        .header-nav {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
        }
        .nav-inner {
            max-width: var(--site-container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 0 24px;
            min-height: 48px;
            flex-wrap: wrap;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            padding: 13px 2px;
            display: inline-flex;
            align-items: center;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 8px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.3s;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
        }
        .nav-link.active::after {
            width: 100%;
        }
        .nav-trends {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            font-size: 13px;
        }
        .trend-label {
            color: var(--text-muted);
            background: var(--bg);
            padding: 4px 12px;
            border-radius: 20px;
        }
        .nav-trends a {
            color: var(--text-muted);
            transition: all 0.3s;
        }
        .nav-trends a:hover {
            color: var(--accent);
        }
        .breadcrumb-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: #c0c8d0;
        }
        .breadcrumb-current {
            color: var(--text);
            font-weight: 500;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .article-section {
            padding: 36px 0 56px;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 350px;
            gap: 36px;
            align-items: start;
        }
        .article-main {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .article-header {
            margin-bottom: 28px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        .badge-accent {
            background: rgba(212, 168, 83, 0.15);
            color: var(--accent-dark);
        }
        .article-date {
            font-size: 13px;
            color: var(--text-muted);
            display: inline-flex;
            align-items: center;
        }
        .article-header h1 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            color: var(--primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .article-desc {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text);
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--accent);
        }
        .article-content h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin: 28px 0 12px;
        }
        .article-content p {
            margin-bottom: 16px;
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-content ul li,
        .article-content ol li {
            position: relative;
            margin-bottom: 8px;
            padding-left: 4px;
        }
        .article-content ul li::before {
            content: '';
            position: absolute;
            left: -14px;
            top: 12px;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
        }
        .article-content ol li::before {
            content: '';
            position: absolute;
            left: -16px;
            top: 12px;
            width: 6px;
            height: 6px;
            border: 1px solid var(--accent);
            border-radius: 50%;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 20px 0;
            box-shadow: var(--shadow);
        }
        .article-content blockquote {
            background: var(--bg);
            border-left: 4px solid var(--accent);
            padding: 16px 24px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
        }
        .article-content blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        .article-content a:hover {
            color: var(--accent-dark);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border);
            padding: 12px;
            text-align: left;
        }
        .article-content th {
            background: var(--bg);
            font-weight: 600;
        }
        .article-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 32px;
            padding-top: 20px;
            border-top: 1px solid var(--border);
        }
        .tag {
            display: inline-flex;
            align-items: center;
            background: var(--bg);
            color: var(--text-muted);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.3s;
        }
        .tag:hover {
            background: var(--accent);
            color: var(--primary-dark);
        }
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: 16px;
            padding: 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .sidebar-entry {
            padding: 0;
            overflow: hidden;
            background-size: cover;
            background-position: center;
            min-height: 200px;
            position: relative;
            border: none;
        }
        .sidebar-entry-overlay {
            background: linear-gradient(180deg, rgba(7, 21, 39, 0.15) 0%, rgba(7, 21, 39, 0.88) 100%);
            padding: 28px 24px;
            min-height: 200px;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }
        .sidebar-entry-overlay h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .sidebar-entry-overlay p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 13px;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .sidebar-title {
            display: flex;
            align-items: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border);
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .sidebar-post {
            display: flex;
            gap: 12px;
            padding: 8px;
            border-radius: 10px;
            transition: all 0.3s;
        }
        .sidebar-post:hover {
            background: var(--bg);
            transform: translateX(4px);
        }
        .sidebar-post-cover {
            flex-shrink: 0;
            width: 72px;
            height: 54px;
            border-radius: 8px;
            overflow: hidden;
        }
        .sidebar-post-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sidebar-post-info {
            min-width: 0;
            flex: 1;
        }
        .sidebar-post-cat {
            display: inline-block;
            font-size: 11px;
            color: var(--accent-dark);
            background: rgba(212, 168, 83, 0.12);
            padding: 2px 8px;
            border-radius: 10px;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .sidebar-post-info h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s;
        }
        .sidebar-post-info h4:hover {
            color: var(--primary);
        }
        .sidebar-post-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .related-section {
            padding: 64px 0 48px;
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.02em;
        }
        .section-header p {
            color: var(--text-muted);
            margin-top: 8px;
            font-size: 15px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--bg-white);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
            display: block;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .related-cover {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .related-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .related-card:hover .related-cover img {
            transform: scale(1.04);
        }
        .related-body {
            padding: 20px;
        }
        .related-body .tag {
            margin-bottom: 10px;
        }
        .related-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s;
        }
        .related-body h3:hover {
            color: var(--primary);
        }
        .related-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .related-date {
            font-size: 12px;
            color: var(--text-muted);
        }
        .faq-section {
            padding: 64px 0;
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: 12px;
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
        }
        .faq-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        .faq-item h4 {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .faq-item h4 i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 3px;
        }
        .faq-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            padding-left: 30px;
        }
        .cta-section {
            padding: 72px 0;
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            position: relative;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(7, 21, 39, 0.92) 0%, rgba(7, 21, 39, 0.75) 100%);
        }
        .cta-box {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            margin-bottom: 24px;
        }
        .cta-box .btn-big {
            padding: 14px 36px;
            font-size: 16px;
            border-radius: 10px;
        }
        .not-found-section {
            padding: 80px 0;
            min-height: 50vh;
        }
        .not-found-box {
            text-align: center;
            max-width: 560px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: 16px;
            padding: 60px 40px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .not-found-icon {
            font-size: 60px;
            color: var(--accent);
            margin-bottom: 20px;
        }
        .not-found-box h1 {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .not-found-box p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            max-width: var(--site-container);
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding: 0 24px 40px;
        }
        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
        }
        .footer-logo .brand-dot {
            color: var(--accent);
            font-size: 28px;
            line-height: 1;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            margin-top: 16px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-top: 16px;
        }
        .footer-contact span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            display: flex;
            align-items: center;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: all 0.3s;
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom p {
            max-width: var(--site-container);
            margin: 0 auto;
        }
        .empty-text {
            font-size: 14px;
            color: var(--text-muted);
            text-align: center;
            padding: 20px 0;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .header-search {
                width: 220px;
            }
        }
        @media (max-width: 768px) {
            .header-main {
                padding: 10px 16px;
            }
            .header-search {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .header-nav {
                display: none;
            }
            .header-nav.open {
                display: block;
            }
            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 16px;
            }
            .nav-link {
                padding: 12px 4px;
                border-bottom: 1px solid var(--border);
            }
            .nav-trends {
                margin-left: 0;
                padding: 12px 0;
                flex-wrap: wrap;
            }
            .article-main {
                padding: 24px 20px;
                border-radius: 12px;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-section {
                background-attachment: scroll;
            }
        }
        @media (max-width: 520px) {
            .cta-box h2 {
                font-size: 24px;
            }
            .article-section {
                padding: 24px 0 40px;
            }
            .article-content {
                font-size: 15px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-dot {
                font-size: 22px;
            }
            .btn-sm {
                padding: 6px 12px;
                font-size: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1d4ed8;
            --primary-dark: #1e3a8a;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-dark: #b45309;
            --bg-body: #f8fafc;
            --bg-deep: #0f172a;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, 0.14);
            --container: 1200px;
            --header-h: 64px;
            --transition: 0.25s ease;
        }

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

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

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

        input {
            font-family: inherit;
        }

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

        .narrow-container {
            max-width: 860px;
        }

        .section {
            padding: 80px 0;
        }

        .section-white {
            background: #fff;
        }

        .section-gray {
            background: var(--bg-body);
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }

        .section-head.align-left {
            text-align: left;
            margin: 0 0 32px;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
            color: var(--bg-deep);
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-head.align-left h2 {
            margin-bottom: 10px;
        }

        .section-head.align-left p {
            max-width: 560px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
        }

        .header-main {
            max-width: var(--container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 20px;
            height: var(--header-h);
            padding: 0 24px;
        }

        .brand-logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--primary-dark);
            display: inline-flex;
            align-items: center;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .brand-dot {
            color: var(--accent);
            margin-left: 1px;
        }

        .header-search {
            flex: 1;
            max-width: 380px;
            display: flex;
            align-items: center;
            border: 1px solid var(--border);
            border-radius: 999px;
            background: var(--bg-body);
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
        }

        .header-search:focus-within {
            box-shadow: 0 0 0 4px rgba(29, 78, 216, 0.12);
            border-color: var(--primary);
            background: #fff;
        }

        .header-search input {
            flex: 1;
            min-width: 0;
            border: none;
            outline: none;
            background: transparent;
            padding: 9px 16px;
            font-size: 14px;
            color: var(--text-main);
        }

        .header-search button {
            width: 44px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 14px;
            border-radius: 0 999px 999px 0;
            transition: background var(--transition);
        }

        .header-search button:hover {
            background: var(--primary-light);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            font-weight: 600;
            line-height: 1;
            transition: all var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 10px 24px;
            box-shadow: 0 2px 6px rgba(29, 78, 216, 0.2);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(29, 78, 216, 0.3);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            padding: 12px 30px;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }

        .btn-outline {
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-main);
            padding: 10px 24px;
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn-light {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.35);
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .btn-light:hover {
            background: rgba(255, 255, 255, 0.2);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 14px 36px;
            font-size: 16px;
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-main);
            background: var(--bg-body);
            border: 1px solid var(--border);
            transition: background var(--transition), color var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .header-nav {
            border-top: 1px solid var(--border);
            background: #fff;
        }

        .nav-inner {
            max-width: var(--container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            gap: 4px;
            padding: 0 24px;
            height: 52px;
            overflow-x: auto;
            scrollbar-width: none;
        }

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

        .nav-link {
            display: inline-flex;
            align-items: center;
            height: 52px;
            padding: 0 18px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-muted);
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
        }

        .nav-link.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .nav-trends {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            padding-left: 16px;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .nav-trends a {
            color: var(--text-muted);
        }

        .nav-trends a:hover {
            color: var(--primary);
        }

        .trend-label {
            color: var(--accent);
            font-weight: 700;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 84px 0 68px;
            color: #fff;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 23, 42, 0.93) 0%, rgba(30, 58, 138, 0.78) 55%, rgba(29, 78, 216, 0.48) 100%);
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 22px;
        }

        .breadcrumb a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .breadcrumb i {
            font-size: 10px;
            opacity: 0.8;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: clamp(30px, 4.4vw, 46px);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-hero p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.86);
            max-width: 620px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 30px;
        }

        /* ===== Notice Strip ===== */
        .notice-strip {
            background: var(--bg-deep);
            border-block: 1px solid rgba(255, 255, 255, 0.08);
        }

        .notice-inner {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 24px;
            color: rgba(255, 255, 255, 0.82);
            font-size: 14px;
        }

        .notice-icon {
            color: var(--accent);
            font-size: 16px;
            flex-shrink: 0;
        }

        .notice-text {
            flex: 1;
            min-width: 0;
        }

        .notice-meta {
            flex-shrink: 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.15);
            padding: 3px 12px;
            border-radius: 999px;
        }

        /* ===== Category Cards ===== */
        .cat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .cat-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
        }

        .cat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(29, 78, 216, 0.25);
        }

        .cat-card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--primary-light);
        }

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

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

        .cat-card-body {
            position: relative;
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .cat-number {
            position: absolute;
            top: 20px;
            right: 22px;
            font-size: 28px;
            font-weight: 800;
            color: rgba(29, 78, 216, 0.12);
            line-height: 1;
        }

        .cat-card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--bg-deep);
            margin-bottom: 8px;
        }

        .cat-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }

        .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
        }

        .cat-link i {
            transition: transform var(--transition);
            font-size: 12px;
        }

        .cat-card:hover .cat-link i {
            transform: translateX(5px);
        }

        /* ===== Split Layout ===== */
        .split-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 40px;
            align-items: start;
        }

        .content-main {
            min-width: 0;
        }

        .content-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
            position: sticky;
            top: 140px;
        }

        .issue-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .issue-item {
            display: flex;
            gap: 18px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 24px;
            transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
        }

        .issue-item:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
            border-color: rgba(29, 78, 216, 0.2);
        }

        .issue-index {
            font-size: 30px;
            font-weight: 800;
            color: rgba(29, 78, 216, 0.22);
            line-height: 1;
            min-width: 36px;
        }

        .issue-content h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--bg-deep);
            margin-bottom: 6px;
        }

        .issue-content p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .issue-more {
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .issue-more:hover {
            color: var(--primary-dark);
        }

        .issue-more i {
            font-size: 11px;
            transition: transform var(--transition);
        }

        .issue-more:hover i {
            transform: translateY(2px);
        }

        /* Side Cards */
        .side-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
        }

        .side-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
        }

        .side-card h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--bg-deep);
            margin-bottom: 8px;
        }

        .side-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 14px;
        }

        .side-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            color: var(--bg-deep);
            margin-bottom: 14px;
        }

        .side-title i {
            color: var(--primary);
            font-size: 14px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 999px;
            transition: all var(--transition);
        }

        .tag:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        .side-updates {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .side-updates li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-main);
        }

        .side-updates .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
            margin-top: 9px;
        }

        .side-updates a:hover {
            color: var(--primary);
        }

        /* ===== Steps ===== */
        .steps-section {
            background: #fff;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .step-card {
            position: relative;
            background: var(--bg-body);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px 28px;
            transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
        }

        .step-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            background: #fff;
        }

        .step-num {
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            box-shadow: 0 6px 16px rgba(29, 78, 216, 0.3);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--bg-deep);
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        /* ===== Stats ===== */
        .stats-band {
            position: relative;
            background-size: cover;
            background-position: center;
            padding: 80px 0;
            color: #fff;
        }

        .stats-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 23, 42, 0.95), rgba(30, 58, 138, 0.82));
        }

        .stats-band .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            padding: 20px 10px;
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(4px);
            transition: background var(--transition), transform var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        .stat-num {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
            letter-spacing: -0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.72);
        }

        /* ===== FAQ Detail ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(29, 78, 216, 0.22);
        }

        .faq-item.active {
            border-color: rgba(29, 78, 216, 0.4);
            box-shadow: var(--shadow);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--bg-deep);
            text-align: left;
            transition: background var(--transition);
        }

        .faq-question:hover {
            background: #f8fafc;
        }

        .faq-question i {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            transition: transform var(--transition), background var(--transition);
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.85;
            border-top: 0 solid var(--border);
        }

        .faq-item.active .faq-answer {
            max-height: 600px;
            padding: 18px 24px 24px;
            border-top-width: 1px;
            margin-top: 0;
        }

        .faq-answer p {
            margin-bottom: 10px;
        }

        .faq-answer p:last-child {
            margin-bottom: 0;
        }

        .faq-tip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(130deg, var(--bg-deep) 0%, #1e3a8a 100%);
            color: #fff;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -120px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.14);
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 88px 24px;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(28px, 3.4vw, 38px);
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 32px;
        }

        .cta-inner .hero-actions {
            justify-content: center;
            margin-top: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }

        .footer-grid {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px 48px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            margin-bottom: 14px;
        }

        .footer-logo .brand-dot {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 340px;
            margin-bottom: 20px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition), padding-left var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            max-width: var(--container);
            margin: 0 auto;
            padding: 18px 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .cat-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .split-layout {
                grid-template-columns: 1fr;
            }

            .content-side {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .side-card {
                flex: 1;
                min-width: 260px;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-main {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 16px;
                row-gap: 10px;
            }

            .brand-logo {
                font-size: 19px;
            }

            .header-main .btn-primary {
                margin-left: auto;
            }

            .header-search {
                flex-basis: 100%;
                order: 3;
                max-width: none;
            }

            .nav-toggle {
                display: flex;
            }

            .header-nav {
                display: none;
            }

            .header-nav.open {
                display: block;
                border-top: 1px solid var(--border);
            }

            .nav-inner {
                height: auto;
                padding: 8px 16px 12px;
                align-items: flex-start;
                flex-wrap: nowrap;
                overflow-x: auto;
            }

            .nav-link {
                height: 40px;
                flex-shrink: 0;
            }

            .nav-trends {
                display: none;
            }

            .page-hero {
                padding: 56px 0 48px;
            }

            .page-hero p {
                font-size: 15px;
            }

            .hero-actions .btn {
                padding: 11px 22px;
                font-size: 14px;
            }

            .section {
                padding: 56px 0;
            }

            .notice-inner {
                flex-wrap: wrap;
                padding: 14px 16px;
                gap: 8px;
            }

            .notice-meta {
                margin-left: 28px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .cta-inner {
                padding: 60px 20px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .cat-grid {
                grid-template-columns: 1fr;
            }

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

            .issue-item {
                flex-direction: column;
                gap: 10px;
                padding: 18px;
            }

            .issue-index {
                font-size: 22px;
            }

            .faq-question {
                font-size: 15px;
                padding: 18px 18px;
            }

            .faq-item.active .faq-answer {
                padding: 14px 18px 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
                padding-bottom: 36px;
            }

            .footer-bottom p {
                padding: 16px;
            }

            .content-side {
                flex-direction: column;
            }
        }