/* roulang page: index */
:root {
    --primary: #1E4B3F;
    --primary-dark: #173A30;
    --primary-light: rgba(30, 75, 63, 0.08);
    --gold: #B48B4A;
    --gold-light: rgba(180, 139, 74, 0.15);
    --bg: #FCFBF9;
    --bg-dark: #17231F;
    --bg-soft: #FAFAF8;
    --white: #FFFFFF;
    --text: #242A27;
    --text-secondary: #5F6B66;
    --text-muted: #9AA39F;
    --border: #E8E6E1;
    --border-light: #F0EEE9;
    --radius-lg: 16px;
    --radius-md: 8px;
    --radius-pill: 999px;
    --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.08);
    --font-main: system-ui, -apple-system, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
    --header-h: 72px;
}
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    height: auto;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
a:hover {
    color: var(--primary-dark);
}
.container {
    max-width: 1320px;
    padding-left: 24px;
    padding-right: 24px;
}
.section {
    padding: 96px 0;
}
.section-heading {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}
.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--gold);
    text-transform: uppercase;
    margin-bottom: 12px;
    padding: 4px 16px;
    border: 1px solid var(--gold-light);
    border-radius: var(--radius-pill);
}
.section-heading h2 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.section-sub {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}
.btn {
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 16px;
    padding: 12px 28px;
    border: 1px solid transparent;
    transition: all 0.25s ease;
}
.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: #fff;
    box-shadow: 0 6px 20px rgba(30, 75, 63, 0.25);
    transform: translateY(-1px);
}
.btn-outline {
    background-color: transparent;
    border: 1px solid #E3E1DC;
    color: var(--primary);
}
.btn-outline:hover, .btn-outline:focus {
    background-color: #F2F1ED;
    border-color: rgba(30, 75, 63, 0.3);
    color: var(--primary-dark);
}
.btn-light-line {
    background-color: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.5);
    color: #fff;
}
.btn-light-line:hover {
    background-color: rgba(255,255,255,0.22);
    border-color: #fff;
    color: #fff;
}
.text-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--primary);
    transition: gap 0.25s ease;
}
.text-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}
.arrow-ico {
    display: inline-block;
    transition: transform 0.25s ease;
}
.text-link:hover .arrow-ico {
    transform: translateX(4px);
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(255,255,255,0.97);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(10px);
}
.site-header .navbar {
    min-height: var(--header-h);
    padding: 0;
}
.site-header .navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    padding: 0;
    margin: 0;
}
.site-header .navbar-brand svg {
    flex-shrink: 0;
}
.site-header .navbar-brand span {
    letter-spacing: -0.2px;
    white-space: nowrap;
}
.navbar-nav {
    gap: 8px;
}
.navbar-nav .nav-link {
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    padding: 10px 18px;
    border-radius: var(--radius-md);
    position: relative;
    transition: color 0.2s ease;
}
.navbar-nav .nav-link::after {
    content: "";
    position: absolute;
    left: 18px;
    right: 18px;
    bottom: 4px;
    height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.25s ease;
}
.navbar-nav .nav-link:hover {
    color: var(--primary);
}
.navbar-nav .nav-link:hover::after {
    transform: scaleX(1);
}
.navbar-nav .nav-link.active {
    color: var(--primary);
    font-weight: 600;
}
.navbar-nav .nav-link.active::after {
    transform: scaleX(1);
}
.header-tools {
    display: flex;
    align-items: center;
    gap: 16px;
}
.search-wrap {
    position: relative;
    width: 220px;
}
.search-wrap .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 17px;
    height: 17px;
    color: var(--text-muted);
    pointer-events: none;
}
.search-wrap input {
    width: 100%;
    height: 40px;
    border: 1px solid transparent;
    background: #F2F1ED;
    border-radius: var(--radius-pill);
    padding: 0 18px 0 42px;
    font-size: 15px;
    color: var(--text);
    outline: none;
    transition: all 0.25s ease;
}
.search-wrap input::placeholder {
    color: var(--text-muted);
}
.search-wrap input:focus {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(30,75,63,0.08);
}
.header-cta {
    height: 42px;
    padding: 0 24px;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    border-radius: var(--radius-md);
}
.navbar-toggler {
    border: none;
    padding: 8px 10px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
}
.navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Hero */
.hero {
    position: relative;
    min-height: 78vh;
    display: flex;
    align-items: center;
    color: #fff;
    background: linear-gradient(100deg, rgba(23,35,31,0.9) 0%, rgba(23,35,31,0.68) 50%, rgba(23,35,31,0.35) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding: 72px 0;
    overflow: hidden;
}
.hero .hero-content {
    max-width: 680px;
    position: relative;
    z-index: 2;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: var(--radius-pill);
    font-size: 13px;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.9);
    margin-bottom: 24px;
}
.hero-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--gold);
    border-radius: 50%;
    display: inline-block;
}
.hero h1 {
    font-size: 52px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}
.hero .lead {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
    margin-bottom: 32px;
}
.hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}
.hero-btn {
    height: 50px;
    padding: 0 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.25s ease;
}
.hero-btn-primary {
    background: #fff;
    color: var(--primary-dark);
    border: 1px solid #fff;
}
.hero-btn-primary:hover {
    background: rgba(255,255,255,0.9);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}
.hero-btn-ghost {
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,0.5);
}
.hero-btn-ghost:hover {
    background: rgba(255,255,255,0.12);
    border-color: #fff;
    color: #fff;
}
.hero-trust {
    display: flex;
    align-items: center;
    gap: 28px;
    font-size: 13px;
    color: rgba(255,255,255,0.75);
}
.hero-trust span {
    display: flex;
    align-items: center;
    gap: 6px;
}
.hero-trust .td {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: var(--gold);
}
.hero-pattern-box {
    position: absolute;
    right: 8%;
    bottom: 12%;
    width: 220px;
    height: 220px;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 24px;
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}
.hero-pattern-box .hp-num {
    font-family: var(--font-mono);
    font-size: 42px;
    color: rgba(255,255,255,0.5);
    letter-spacing: 2px;
}

/* Features */
.features {
    background: var(--bg);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.feature-card {
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gold);
    opacity: 0;
    transition: opacity 0.3s ease;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}
.feature-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--primary);
}
.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.3px;
}
.feature-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Steps */
.steps {
    background: var(--white);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    counter-reset: step;
}
.step-item {
    counter-increment: step;
    position: relative;
    padding-top: 70px;
}
.step-item::before {
    content: "0" counter(step);
    position: absolute;
    top: 0;
    left: 0;
    font-family: var(--font-mono);
    font-size: 48px;
    font-weight: 500;
    color: var(--gold);
    line-height: 1;
    letter-spacing: -2px;
}
.step-item::after {
    content: "";
    position: absolute;
    top: 56px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, var(--border) 0%, transparent 100%);
}
.step-item h3 {
    font-size: 21px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 12px;
}
.step-item p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Featured */
.featured {
    background: var(--bg);
}
.featured-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}
.featured-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}
.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.featured-card .fc-img {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/9;
}
.featured-card .fc-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.featured-card:hover .fc-img img {
    transform: scale(1.03);
}
.featured-card .fc-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    background: rgba(255,255,255,0.93);
    color: var(--primary);
    font-size: 13px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-sm);
    z-index: 1;
}
.featured-card .fc-body {
    padding: 28px;
}
.featured-card .fc-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
    line-height: 1.4;
}
.featured-card .fc-body p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
}
.featured-small-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}
.featured-small {
    display: flex;
    align-items: center;
    gap: 18px;
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 22px 24px;
    transition: all 0.3s ease;
}
.featured-small:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.featured-small .fs-thumb {
    width: 84px;
    height: 64px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-soft);
}
.featured-small .fs-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.featured-small .fs-body h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.featured-small .fs-body span {
    font-size: 13px;
    color: var(--text-muted);
}

/* News / CMS */
.news-section {
    background: var(--white);
    border-top: 1px solid var(--border-light);
    border-bottom: 1px solid var(--border-light);
}
.news-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 980px;
    margin: 0 auto;
}
.news-item {
    display: flex;
    align-items: center;
    gap: 28px;
    background: var(--bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 26px 30px;
    transition: all 0.25s ease;
}
.news-item:hover {
    background: var(--white);
    border-color: var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.news-item:hover .news-date {
    color: var(--primary);
}
.news-date {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-align: center;
    min-width: 76px;
    padding-right: 28px;
    border-right: 1px solid var(--border);
    line-height: 1.4;
    transition: color 0.25s ease;
}
.news-date .d {
    font-size: 24px;
    font-weight: 700;
    display: block;
    color: var(--text);
    font-family: var(--font-mono);
}
.news-date .my {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    letter-spacing: 1px;
}
.news-body {
    flex: 1;
    min-width: 0;
}
.news-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
    line-height: 1.4;
    transition: color 0.2s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.news-body p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
}
.news-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-shrink: 0;
}
.news-cat {
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    white-space: nowrap;
}
.news-arrow {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--white);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 16px;
    transition: all 0.25s ease;
}
.news-item:hover .news-arrow {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}
.news-empty {
    max-width: 980px;
    margin: 0 auto;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-soft);
    height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
}
.news-empty svg {
    width: 36px;
    height: 36px;
    color: var(--text-muted);
}
.news-empty p {
    font-size: 16px;
    margin-bottom: 0;
    font-weight: 500;
}

/* Stats */
.stats-section {
    background: var(--bg-dark);
    color: #fff;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
}
.stat-item {
    text-align: center;
}
.stat-num {
    font-size: 44px;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
    font-family: var(--font-mono);
    letter-spacing: -1px;
    margin-bottom: 8px;
}
.stat-num .tiny {
    font-size: 24px;
    vertical-align: baseline;
}
.stat-label {
    font-size: 15px;
    color: rgba(255,255,255,0.7);
}
.stat-divider {
    width: 32px;
    height: 2px;
    background: var(--gold);
    margin: 20px auto 0;
    border-radius: 2px;
}

/* FAQ */
.faq-section {
    background: var(--bg);
}
.faq-wrap {
    max-width: 760px;
    margin: 0 auto;
}
.faq-item {
    background: var(--white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 14px;
    overflow: hidden;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.faq-item:hover {
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
}
.faq-q {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 22px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
    transition: color 0.2s ease;
}
.faq-q:hover {
    color: var(--primary);
}
.faq-q .faq-ico {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.25s ease;
}
.faq-q[aria-expanded="true"] .faq-ico {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: rotate(45deg);
}
.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.faq-a-inner {
    padding: 0 24px 22px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
}

/* CTA */
.cta-section {
    background: linear-gradient(135deg, var(--bg) 0%, #F4F0E9 100%);
    border-top: 1px solid var(--border-light);
}
.cta-box {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    padding: 48px 0;
}
.cta-box h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}
.cta-box p {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 32px;
}
.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.cta-btn {
    min-width: 148px;
    height: 50px;
    padding: 0 32px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
}

/* Footer */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255,255,255,0.7);
    padding: 64px 0 0;
    position: relative;
}
.site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--gold) 0%, transparent 60%);
}
.footer-main {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 60px;
    padding-bottom: 48px;
}
.footer-brand .fb-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.6);
    max-width: 300px;
    margin-bottom: 0;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-col ul li + li {
    margin-top: 12px;
}
.footer-col ul a {
    color: rgba(255,255,255,0.6);
    font-size: 15px;
    transition: color 0.2s ease;
}
.footer-col ul a:hover {
    color: #fff;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    font-size: 13px;
    color: rgba(255,255,255,0.4);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom a {
    color: rgba(255,255,255,0.5);
}
.footer-bottom a:hover {
    color: #fff;
}

/* Scroll top */
.scroll-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: var(--shadow-md);
}
.scroll-top.show {
    opacity: 1;
    visibility: visible;
}
.scroll-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

@media (max-width: 1199.98px) {
    .search-wrap {
        width: 180px;
    }
}
@media (max-width: 991.98px) {
    .section {
        padding: 72px 0;
    }
    .site-header .navbar {
        min-height: 60px;
    }
    .navbar-collapse {
        background: #fff;
        border-top: 1px solid var(--border-light);
        padding: 20px 0;
        margin-top: 8px;
    }
    .navbar-nav {
        gap: 0;
        margin-bottom: 16px;
    }
    .navbar-nav .nav-link {
        padding: 12px 16px;
        border-radius: var(--radius-md);
    }
    .navbar-nav .nav-link::after {
        display: none;
    }
    .navbar-nav .nav-link.active {
        background: var(--primary-light);
    }
    .header-tools {
        flex-wrap: wrap;
        gap: 12px;
        padding: 0 16px;
    }
    .search-wrap {
        width: 100%;
    }
    .header-cta {
        width: 100%;
        justify-content: center;
    }
    .hero {
        min-height: auto;
        padding: 90px 0 70px;
    }
    .hero h1 {
        font-size: 40px;
    }
    .hero-pattern-box {
        display: none;
    }
    .features-grid,
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    .feature-card {
        padding: 30px 24px;
    }
    .step-item {
        padding-top: 56px;
    }
    .step-item::after {
        display: none;
    }
    .featured-grid {
        grid-template-columns: 1fr;
    }
    .featured-small-grid {
        grid-template-columns: 1fr;
    }
    .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
        padding: 24px;
    }
    .news-date {
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding-right: 0;
        padding-bottom: 12px;
        text-align: left;
        display: flex;
        align-items: baseline;
        gap: 8px;
        min-width: auto;
    }
    .news-date .d {
        font-size: 18px;
        display: inline;
    }
    .news-date .my {
        display: inline;
    }
    .news-meta {
        width: 100%;
        justify-content: space-between;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}
@media (max-width: 767.98px) {
    .container {
        padding-left: 20px;
        padding-right: 20px;
    }
    .hero h1 {
        font-size: 34px;
        line-height: 1.25;
    }
    .hero .lead {
        font-size: 16px;
    }
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .hero-btn {
        justify-content: center;
    }
    .section-heading h2 {
        font-size: 28px;
    }
    .section-sub {
        font-size: 15px;
    }
    .featured-card .fc-body {
        padding: 22px 20px;
    }
    .featured-small {
        flex-direction: column;
        align-items: flex-start;
    }
    .featured-small .fs-thumb {
        width: 100%;
        height: auto;
        aspect-ratio: 16/6;
    }
    .stat-num {
        font-size: 34px;
    }
    .cta-box h2 {
        font-size: 28px;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .site-header .navbar-brand span {
        font-size: 18px;
    }
}
@media (max-width: 575.98px) {
    .section {
        padding: 56px 0;
    }
    .section-heading {
        margin-bottom: 40px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 28px 16px;
    }
    .stat-num {
        font-size: 28px;
    }
    .stat-label {
        font-size: 13px;
    }
    .cta-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .cta-btn {
        width: 100%;
    }
    .news-body h3 {
        font-size: 16px;
        white-space: normal;
    }
    .news-body p {
        -webkit-line-clamp: 3;
    }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
    html {
        scroll-behavior: auto;
    }
}

/* roulang page: category1 */
:root {
            --primary: #1E4B3F;
            --primary-dark: #163A31;
            --primary-light: #EAF1EE;
            --accent: #B48B4A;
            --accent-light: #C9A56B;
            --bg: #FCFBF9;
            --deep: #17231F;
            --deep-soft: #1F2D28;
            --card-bg: #FFFFFF;
            --text: #242A27;
            --text-secondary: #5F6B66;
            --text-muted: #9AA39F;
            --border: #E8E6E1;
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 12px 24px rgba(0,0,0,0.08);
            --transition: all 0.2s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg);
            color: var(--text);
            font-family: system-ui, -apple-system, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
            line-height: 1.75;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        .container {
            max-width: 1320px;
        }

        section {
            scroll-margin-top: 90px;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            background: #FFFFFF;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0,0,0,0.03);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar {
            min-height: 72px;
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--text);
            letter-spacing: -0.2px;
            white-space: nowrap;
        }

        .navbar-brand:hover {
            color: var(--primary);
        }

        .navbar-nav .nav-item {
            margin: 0 4px;
        }

        .navbar-nav .nav-link {
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            padding: 10px 14px;
            position: relative;
            transition: color 0.2s ease;
        }

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

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 4px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.2s ease;
        }

        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

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

        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }

        .search-icon {
            position: absolute;
            left: 14px;
            color: var(--text-muted);
            pointer-events: none;
        }

        .search-input {
            width: 220px;
            height: 40px;
            border: 1px solid var(--border);
            background: #F2F1ED;
            border-radius: var(--radius-pill);
            padding: 0 16px 0 40px;
            font-size: 14px;
            color: var(--text);
            outline: none;
            transition: var(--transition);
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(30,75,63,0.08);
        }

        .header-cta {
            height: 40px;
            line-height: 38px;
            padding: 0 20px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .header-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(30,75,63,0.18);
        }

        .navbar-toggler {
            border: none;
            padding: 8px;
            box-shadow: none !important;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(30,75,63,0.1) !important;
        }

        @media (max-width: 991.98px) {
            .navbar {
                min-height: 60px;
            }

            .navbar-collapse {
                background: #fff;
                padding: 16px 0 20px;
                border-top: 1px solid var(--border);
                margin-top: 8px;
            }

            .navbar-nav .nav-link {
                padding: 12px 8px;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .header-tools {
                margin-top: 12px;
                flex-direction: column;
                align-items: stretch;
            }

            .search-wrap {
                width: 100%;
            }

            .search-input {
                width: 100%;
            }

            .header-cta {
                width: 100%;
                text-align: center;
                line-height: 44px;
                height: 44px;
            }
        }

        /* ===== Page Banner ===== */
        .page-banner {
            background: linear-gradient(90deg, rgba(23,35,31,0.86) 0%, rgba(23,35,31,0.55) 100%),
                        url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            padding: 76px 0 68px;
            color: #fff;
            border-bottom: 3px solid var(--accent);
        }

        .breadcrumb-nav {
            font-size: 14px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            letter-spacing: 0.2px;
        }

        .breadcrumb-nav a {
            color: rgba(255,255,255,0.75);
        }

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

        .breadcrumb-sep {
            margin: 0 8px;
            color: rgba(255,255,255,0.45);
        }

        .page-banner h1 {
            font-size: 42px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin: 0 0 14px;
            color: #fff;
        }

        .page-banner .banner-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255,255,255,0.88);
            max-width: 660px;
            margin: 0;
        }

        .banner-tags {
            margin-top: 22px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .banner-tags .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.12);
            border: 1px solid rgba(255,255,255,0.2);
            color: rgba(255,255,255,0.9);
            font-size: 13px;
            border-radius: var(--radius-pill);
            padding: 4px 12px;
            backdrop-filter: blur(4px);
        }

        @media (max-width: 575px) {
            .page-banner {
                padding: 56px 0 48px;
            }

            .page-banner h1 {
                font-size: 32px;
            }

            .page-banner .banner-desc {
                font-size: 15px;
            }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 96px 0;
        }

        .section-block.tight {
            padding: 72px 0;
        }

        .section-heading {
            margin-bottom: 48px;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1.5px;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-eyebrow::before {
            content: "";
            width: 24px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.3;
            color: var(--text);
            margin: 0 0 12px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
            margin: 0;
        }

        @media (max-width: 767px) {
            .section-block {
                padding: 60px 0;
            }

            .section-title {
                font-size: 28px;
            }
        }

        /* ===== Quick Guide ===== */
        .quick-guide {
            background: var(--card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }

        .quick-guide .guide-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            min-height: 320px;
        }

        .guide-content {
            padding: 44px 40px;
        }

        .guide-content .section-title {
            font-size: 30px;
            margin-bottom: 14px;
        }

        .guide-content .section-subtitle {
            margin-bottom: 28px;
        }

        .guide-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }

        .guide-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .guide-item:first-child {
            padding-top: 0;
        }

        .guide-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
        }

        .guide-text h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 0 0 4px;
            color: var(--text);
        }

        .guide-text p {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        @media (max-width: 767px) {
            .guide-content {
                padding: 28px 20px;
            }

            .guide-visual img {
                min-height: 220px;
                max-height: 280px;
            }
        }

        /* ===== Steps ===== */
        .steps-section {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .step-item {
            position: relative;
            padding: 0 8px;
        }

        .step-line {
            font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
            font-size: 13px;
            color: var(--accent);
            letter-spacing: 1px;
            font-weight: 600;
        }

        .step-item h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--text);
            margin: 14px 0 10px;
        }

        .step-item p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }

        .step-divider {
            border-top: 2px dashed #D8D5CE;
            margin: 40px 0 24px;
        }

        @media (max-width: 767px) {
            .step-item {
                padding: 24px 0;
                border-bottom: 1px solid var(--border);
            }

            .step-item:last-child {
                border-bottom: none;
            }

            .step-divider {
                display: none;
            }
        }

        /* ===== Scenario Cards ===== */
        .scenario-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: transparent;
        }

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

        .scenario-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .scenario-card:hover .card-img-wrap img {
            transform: scale(1.03);
        }

        .scenario-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 500;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            letter-spacing: 0.3px;
        }

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

        .scenario-card .card-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 10px;
        }

        .scenario-card .card-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0 0 16px;
            flex: 1;
        }

        .scenario-link {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }

        .scenario-link:hover {
            gap: 8px;
            color: var(--accent);
        }

        /* ===== Security ===== */
        .security-section {
            background: var(--deep);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .security-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 1px solid rgba(180,139,74,0.25);
        }

        .security-section::after {
            content: "";
            position: absolute;
            top: 30px;
            right: 20px;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 1px solid rgba(180,139,74,0.2);
        }

        .security-section .section-title {
            color: #fff;
        }

        .security-section .section-subtitle {
            color: rgba(255,255,255,0.65);
        }

        .security-item {
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-lg);
            padding: 24px;
            height: 100%;
            transition: var(--transition);
        }

        .security-item:hover {
            background: rgba(255,255,255,0.08);
            border-color: rgba(180,139,74,0.4);
            transform: translateY(-3px);
        }

        .security-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(180,139,74,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--accent);
        }

        .security-item h4 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 8px;
        }

        .security-item p {
            font-size: 14px;
            color: rgba(255,255,255,0.6);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-wrapper {
            max-width: 880px;
            margin: 0 auto;
        }

        .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border);
            background: transparent;
        }

        .accordion-item:first-of-type {
            border-top: 1px solid var(--border);
        }

        .accordion-button {
            background: transparent;
            color: var(--text);
            font-size: 17px;
            font-weight: 600;
            padding: 22px 44px 22px 0;
            box-shadow: none;
            position: relative;
        }

        .accordion-button::after {
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="%23B48B4A" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><path d="m6 9 6 6 6-6"/></svg>');
            background-size: 18px;
            transition: transform 0.3s ease;
            position: absolute;
            right: 8px;
            width: 18px;
            height: 18px;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
        }

        .accordion-button:focus {
            box-shadow: none;
            border: none;
            outline: 2px solid rgba(30,75,63,0.15);
            outline-offset: 4px;
        }

        .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--primary);
        }

        .accordion-body {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
            padding: 0 40px 26px 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--primary-light);
            border-top: 1px solid var(--border);
            text-align: center;
            padding: 88px 0;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .btn-cta-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 24px rgba(30,75,63,0.22);
        }

        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            height: 48px;
            padding: 0 32px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 600;
            border: 1px solid #D8D5CE;
            border-radius: var(--radius-md);
            transition: var(--transition);
        }

        .btn-cta-secondary:hover {
            border-color: rgba(30,75,63,0.3);
            background: #F5F3EF;
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        @media (max-width: 575px) {
            .cta-section {
                padding: 60px 0;
            }

            .cta-section h2 {
                font-size: 28px;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--deep);
            color: #9AA39F;
            padding-top: 64px;
            font-size: 15px;
        }

        .site-footer a {
            color: rgba(255,255,255,0.68);
            transition: color 0.2s ease;
        }

        .site-footer a:hover {
            color: #fff;
        }

        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1.4fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .fb-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.55);
            max-width: 360px;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }

        @media (max-width: 991px) {
            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 575px) {
            .site-footer {
                padding-top: 44px;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Reduced Motion ===== */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation: none !important;
                transition: none !important;
            }

            html {
                scroll-behavior: auto;
            }
        }

/* roulang page: article */
/* ============ 设计变量 ============ */
        :root {
            --brand: #1E4B3F;
            --brand-dark: #143A31;
            --gold: #B48B4A;
            --gold-deep: #9A7138;
            --bg: #FCFBF9;
            --bg-deep: #17231F;
            --white: #FFFFFF;
            --text: #242A27;
            --text-secondary: #5F6B66;
            --text-muted: #9AA39F;
            --border: #E8E6E1;
            --radius-lg: 16px;
            --radius-md: 8px;
            --radius-sm: 4px;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-hover: 0 12px 24px rgba(0, 0, 0, 0.08);
            --transition: 0.25s ease;
            --font-sans: system-ui, -apple-system, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
            --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
        }

        /* ============ 基础 Reset / Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--brand);
            text-decoration: none;
            transition: color 0.2s ease;
        }

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

        .container {
            max-width: 1320px;
        }

        /* ============ 按钮系统 ============ */
        .btn {
            border-radius: var(--radius-md);
            font-weight: 600;
            transition: all 0.25s ease;
        }

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

        .btn-primary:hover,
        .btn-primary:focus,
        .btn-primary:active {
            background: var(--brand-dark) !important;
            border-color: var(--brand-dark) !important;
            color: #fff !important;
        }

        .btn-gold {
            background: var(--gold);
            border-color: var(--gold);
            color: #fff;
        }

        .btn-gold:hover {
            background: var(--gold-deep);
            border-color: var(--gold-deep);
            color: #fff;
        }

        .btn-outline-light {
            border: 1px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }

        /* ============ Header / 导航 ============ */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.03);
            position: sticky;
            top: 0;
            z-index: 1030;
        }

        .navbar {
            min-height: 72px;
            padding: 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.2px;
        }

        .navbar-brand svg {
            flex-shrink: 0;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .navbar-nav .nav-link {
            font-size: 16px;
            color: var(--text);
            padding: 8px 14px;
            margin: 0 4px;
            position: relative;
            font-weight: 500;
            white-space: nowrap;
        }

        .navbar-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 0;
            height: 2px;
            background: var(--gold);
            transform: scaleX(0);
            transition: transform 0.2s ease;
        }

        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            transform: scaleX(1);
        }

        .navbar-nav .nav-link.active {
            color: var(--brand);
        }

        .navbar-toggler {
            border: none;
            padding: 8px 10px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .header-tools {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-wrap {
            position: relative;
            flex-shrink: 0;
        }

        .search-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            pointer-events: none;
        }

        .search-input {
            width: 220px;
            height: 40px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: #F2F1ED;
            padding: 0 16px 0 40px;
            font-size: 14px;
            outline: none;
            transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
            color: var(--text);
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(30, 75, 63, 0.08);
            background: #fff;
        }

        .btn.header-cta {
            height: 40px;
            padding: 0 22px;
            border-radius: var(--radius-md);
            background: var(--brand);
            color: #fff;
            border: none;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
        }

        .btn.header-cta:hover {
            background: var(--brand-dark);
            color: #fff;
        }

        /* ============ 文章页头 ============ */
        .article-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            padding: 64px 0 120px;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(23, 35, 31, 0.78);
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 24px;
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, 0.85);
            transition: color 0.2s;
        }

        .breadcrumb-nav a:hover {
            color: var(--gold);
        }

        .breadcrumb-nav .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .article-hero h1 {
            color: #fff;
            font-size: 38px;
            font-weight: 700;
            letter-spacing: -0.5px;
            line-height: 1.25;
            margin-bottom: 16px;
            max-width: 860px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }

        .article-meta .meta-date {
            font-family: var(--font-mono);
            font-size: 13px;
        }

        .article-meta .meta-cat {
            background: rgba(180, 139, 74, 0.18);
            color: var(--gold);
            border-radius: 999px;
            padding: 3px 14px;
            font-size: 13px;
            font-weight: 500;
        }

        /* ============ 文章主体 ============ */
        .article-section {
            padding: 0 0 64px;
        }

        .article-holder {
            max-width: 860px;
            margin: -80px auto 0;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            padding: 48px 56px;
            position: relative;
            z-index: 2;
        }

        .article-body {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text);
            word-break: break-word;
        }

        .article-body p {
            margin: 0 0 24px;
        }

        .article-body h2,
        .article-body h3,
        .article-body h4 {
            font-weight: 700;
            color: var(--text);
            line-height: 1.4;
            margin: 40px 0 16px;
            letter-spacing: -0.2px;
        }

        .article-body h2 {
            font-size: 24px;
        }

        .article-body h3 {
            font-size: 20px;
        }

        .article-body h4 {
            font-size: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 24px;
            padding-left: 26px;
        }

        .article-body li {
            margin-bottom: 8px;
        }

        .article-body a {
            color: var(--brand);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--brand-dark);
        }

        .article-body img {
            border-radius: 12px;
            margin: 28px 0;
        }

        .article-body blockquote {
            border-left: 4px solid var(--gold);
            background: #F7F5F1;
            padding: 18px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            margin: 32px 0;
            font-size: 16px;
        }

        .article-body pre {
            background: var(--bg-deep);
            color: #E8E6E1;
            border-radius: 12px;
            padding: 20px 24px;
            overflow-x: auto;
            margin: 28px 0;
            font-size: 14px;
            line-height: 1.7;
            font-family: var(--font-mono);
        }

        .article-body code {
            font-family: var(--font-mono);
            background: #F2F1ED;
            border-radius: 4px;
            padding: 2px 7px;
            font-size: 0.88em;
            color: var(--brand-dark);
        }

        .article-body pre code {
            background: transparent;
            padding: 0;
            color: inherit;
            font-size: 1em;
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 15px;
        }

        .article-body th,
        .article-body td {
            border: 1px solid var(--border);
            padding: 10px 14px;
            text-align: left;
        }

        .article-body th {
            background: #FAFAF8;
            font-weight: 600;
        }

        .article-empty {
            text-align: center;
            padding: 56px 20px;
        }

        .article-empty p {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ============ 标签与文章导航 ============ */
        .tag-section {
            padding: 0 0 88px;
        }

        .tag-inner {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

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

        .tag-list .badge {
            background: #EDF0EE;
            color: var(--brand);
            font-size: 13px;
            border-radius: 999px;
            padding: 7px 16px;
            font-weight: 500;
        }

        .back-link {
            color: var(--text-secondary);
            font-size: 14px;
            transition: color 0.2s;
        }

        .back-link:hover {
            color: var(--brand);
        }

        .article-nav {
            max-width: 860px;
            margin: 24px auto 0;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            border-top: 1px solid var(--border);
            padding-top: 20px;
        }

        .article-nav a {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: color 0.2s, transform 0.2s;
        }

        .article-nav a:hover {
            color: var(--brand);
        }

        .article-nav a:last-child:hover {
            transform: translateX(3px);
        }

        /* ============ 相关阅读 ============ */
        .related-section {
            padding: 88px 0;
            background: #F7F5F1;
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
            color: var(--text);
        }

        .section-sub {
            color: var(--text-secondary);
            font-size: 16px;
            margin-bottom: 40px;
        }

        .related-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

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

        .related-card .card-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .related-card:hover .card-img img {
            transform: scale(1.03);
        }

        .related-card .card-body {
            padding: 20px 24px 24px;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .related-card h3 a {
            color: var(--text);
            transition: color 0.2s;
        }

        .related-card h3 a:hover {
            color: var(--brand);
        }

        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 88px 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 22px 4px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            transition: color 0.2s;
            font-family: var(--font-sans);
        }

        .faq-question:hover {
            color: var(--brand);
        }

        .faq-icon {
            width: 18px;
            height: 18px;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 16px;
        }

        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 4px 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.85;
            max-width: 780px;
        }

        /* ============ CTA 区 ============ */
        .cta-section {
            padding: 88px 0;
            background: var(--bg-deep);
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.3px;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.65);
            font-size: 16px;
            margin-bottom: 32px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cta-section .btn {
            min-width: 160px;
            height: 48px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--bg-deep);
            color: var(--text-muted);
            padding: 64px 0 28px;
            border-top: 2px solid var(--gold);
        }

        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand .fb-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 340px;
            margin-bottom: 0;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: color 0.2s;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-col p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 991.98px) {
            .navbar {
                min-height: 60px;
            }

            .navbar-collapse {
                background: #fff;
                padding: 16px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                box-shadow: var(--shadow-hover);
                margin-top: 6px;
            }

            .navbar-nav .nav-link {
                padding: 12px 0;
                margin: 0;
                font-size: 16px;
                border-bottom: 1px solid #F0EFEC;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .navbar-nav .nav-link.active {
                color: var(--brand);
                font-weight: 600;
            }

            .header-tools {
                width: 100%;
                padding: 16px 0 4px;
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .search-wrap {
                width: 100%;
            }

            .search-input {
                width: 100%;
            }

            .btn.header-cta {
                width: 100%;
                justify-content: center;
                height: 44px;
            }

            .article-hero {
                padding: 48px 0 104px;
            }

            .article-hero h1 {
                font-size: 32px;
            }

            .article-holder {
                padding: 36px 36px;
                margin-top: -72px;
            }

            .footer-main {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767.98px) {
            .article-hero h1 {
                font-size: 28px;
            }

            .article-holder {
                padding: 28px 22px;
                margin-top: -56px;
            }

            .article-section {
                padding-bottom: 48px;
            }

            .tag-section {
                padding-bottom: 64px;
            }

            .related-section,
            .faq-section,
            .cta-section {
                padding: 64px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .footer-main {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .tag-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 575.98px) {
            .navbar-brand {
                font-size: 18px;
            }

            .navbar-brand span {
                display: inline;
            }

            .article-hero h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 10px;
                font-size: 13px;
            }

            .article-body {
                font-size: 16px;
                line-height: 1.85;
            }

            .article-body blockquote {
                padding: 14px 18px;
                font-size: 15px;
            }

            .article-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .section-sub {
                margin-bottom: 28px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-section .btn {
                width: 100%;
                max-width: 260px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 4px;
            }
        }

        /* ============ 减弱动效 ============ */
        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }

            html {
                scroll-behavior: auto;
            }
        }