/* roulang page: index */
:root {
    --primary: #0E6B4A;
    --primary-dark: #09543B;
    --accent: #DC7930;
    --accent-dark: #C4661F;
    --bg: #F4F6F5;
    --dark: #1B2226;
    --dark-soft: #222B31;
    --card-bg: #FFFFFF;
    --border: #D9DEDD;
    --border-light: #E4E8E6;
    --text: #2A2E2D;
    --text-muted: #6C7471;
    --text-on-dark: #DCE4E1;
    --text-dim: #9AA5A1;
    --text-faint: #7D8884;
    --radius: 2px;
    --shadow: 0 1px 3px rgba(16,32,28,0.08);
    --shadow-hover: 0 6px 16px rgba(16,32,28,0.10);
    --transition: 0.2s ease;
    --code-bg: #1B2226;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* Layout spacing */
.section { padding: 96px 0; }
.section-tight { padding: 64px 0; }
.section-header { margin-bottom: 48px; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 12px;
}
.section-eyebrow::before {
    content: "";
    width: 32px;
    height: 2px;
    background: var(--primary);
    margin-right: 10px;
    display: inline-block;
}
.section-title { font-size: 32px; font-weight: 700; line-height: 1.3; letter-spacing: 0.02em; margin-bottom: 16px; }
.section-desc { font-size: 14px; color: var(--text-muted); max-width: 640px; line-height: 1.7; }
.section-head-row { display: flex; align-items: flex-end; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }
.section-head-row .section-title { margin-bottom: 0; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid transparent;
    line-height: 1.2;
}
.btn:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-primary {
    background: var(--accent);
    color: #fff;
    height: 48px;
    padding: 0 32px;
    font-size: 15px;
}
.btn-primary:hover { background: var(--accent-dark); transform: translateY(-1px); box-shadow: var(--shadow-hover); }
.btn-primary:active { background: #A85517; transform: translateY(0); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    height: 48px;
    padding: 0 32px;
    font-size: 15px;
}
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-outline-light {
    background: transparent;
    color: var(--text-on-dark);
    border: 1px solid var(--text-on-dark);
    height: 48px;
    padding: 0 32px;
    font-size: 15px;
}
.btn-outline-light:hover { background: #fff; color: var(--dark); }
.btn-sm { height: 32px; padding: 0 16px; font-size: 13px; }
.btn-md { height: 40px; padding: 0 24px; font-size: 14px; }
.btn-block { width: 100%; }
.btn-disabled { background: #B8BDBB; color: #fff; pointer-events: none; }

/* Header & Nav */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: #fff;
    border-bottom: 1px solid var(--border-light);
    z-index: 100;
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 2px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #F9FBFA;
}
.brand-mark svg { width: 28px; height: 28px; }
.brand-name { font-size: 18px; font-weight: 800; color: var(--text); letter-spacing: 0.02em; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav ul { display: flex; align-items: center; gap: 2px; }
.main-nav ul li a {
    display: block;
    padding: 20px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}
.main-nav ul li a:hover { color: var(--primary); }
.main-nav ul li a.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}
.nav-cta {
    height: 38px;
    padding: 0 22px;
    font-size: 14px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    font-weight: 600;
    transition: var(--transition);
    white-space: nowrap;
}
.nav-cta:hover { background: var(--accent-dark); }
.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    width: 42px;
    height: 42px;
    border-radius: 2px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
    transition: var(--transition);
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--text); transition: var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
    position: relative;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    background-color: var(--dark);
    padding: 200px 0 120px;
    margin-top: 72px;
    overflow: hidden;
}
.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(27,34,38,0.35) 0%, rgba(27,34,38,0.72) 70%, rgba(27,34,38,0.88) 100%);
    pointer-events: none;
}
.hero-content { position: relative; z-index: 2; max-width: 760px; }
.hero-tag {
    display: inline-block;
    background: rgba(220,121,48,0.18);
    border: 1px solid rgba(220,121,48,0.4);
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    padding: 4px 16px;
    border-radius: 999px;
    margin-bottom: 24px;
}
.hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: 0.02em;
    color: #fff;
    margin-bottom: 16px;
}
.hero-sub {
    font-size: 22px;
    line-height: 1.5;
    color: var(--text-on-dark);
    margin-bottom: 16px;
    font-weight: 400;
}
.hero-desc {
    font-size: 16px;
    color: var(--text-dim);
    line-height: 1.8;
    margin-bottom: 32px;
    max-width: 560px;
}
.hero-ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-metrics {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 0;
    margin-top: 72px;
    border-top: 1px solid rgba(255,255,255,0.14);
    padding-top: 32px;
}
.hero-metric {
    flex: 1;
    padding: 0 32px;
    border-left: 1px solid rgba(255,255,255,0.2);
}
.hero-metric:first-child { border-left: none; padding-left: 0; }
.hero-metric .metric-value {
    font-size: 30px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    font-family: "Rajdhani", "Noto Sans SC", sans-serif;
}
.hero-metric .metric-label { font-size: 13px; color: var(--text-dim); margin-top: 4px; }

/* Trust bar */
.trust-bar {
    background: #fff;
    border-bottom: 1px solid var(--border-light);
    padding: 24px 0;
}
.trust-list {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 500;
}
.trust-item svg { width: 18px; height: 18px; color: var(--primary); flex-shrink: 0; }

/* Timeline */
.timeline-section { background: var(--dark); position: relative; overflow: hidden; }
.timeline-section .section-eyebrow { color: var(--accent); }
.timeline-section .section-eyebrow::before { background: var(--accent); }
.timeline-section .section-title { color: #fff; }
.timeline-section .section-desc { color: var(--text-dim); }
.timeline-wrap { position: relative; padding: 40px 0 20px; }
.timeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--primary);
    transform: translateX(-1px);
}
.timeline-item {
    position: relative;
    margin-bottom: 48px;
    width: 50%;
    padding-right: 64px;
    text-align: right;
}
.timeline-item:nth-child(even) {
    margin-left: 50%;
    padding-right: 0;
    padding-left: 64px;
    text-align: left;
}
.timeline-dot {
    position: absolute;
    top: 6px;
    right: -17px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid var(--accent);
    background: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}
.timeline-item:nth-child(even) .timeline-dot { right: auto; left: -17px; }
.timeline-dot::after {
    content: "";
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary);
}
.timeline-year {
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 4px;
    font-family: "Rajdhani", "Noto Sans SC", sans-serif;
}
.timeline-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.timeline-desc { font-size: 14px; color: var(--text-dim); line-height: 1.7; max-width: 420px; }

/* Capability */
.capability-section { background: var(--bg); }
.capability-grid { margin-top: 0; }
.capability-card {
    background: var(--card-bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
    height: 100%;
}
.capability-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}
.capability-card .card-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 16px;
    color: var(--primary);
    transition: var(--transition);
}
.capability-card:hover .card-icon { color: var(--accent); }
.capability-card .card-icon svg { width: 40px; height: 40px; }
.capability-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.capability-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* Plan compare */
.plan-section { background: #fff; }
.plan-grid { display: flex; gap: 24px; align-items: stretch; }
.plan-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}
.plan-card:hover { box-shadow: var(--shadow-hover); }
.plan-card.featured {
    border: 2px solid var(--primary);
    margin-top: -8px;
    position: relative;
    box-shadow: var(--shadow);
}
.plan-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 999px;
    letter-spacing: 0.5px;
}
.plan-name { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.plan-desc { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; }
.plan-list { flex: 1; margin-bottom: 24px; }
.plan-list li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 14px;
    color: var(--text);
    line-height: 1.8;
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
}
.plan-list li:last-child { border-bottom: none; }
.plan-list li::before {
    content: "";
    flex-shrink: 0;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary);
    margin-top: 10px;
}

/* News */
.news-section { background: var(--bg); }
.news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: var(--primary); }
.news-thumb {
    position: relative;
    aspect-ratio: 16 / 10;
    background: #ECEFED;
    overflow: hidden;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.news-card:hover .news-thumb img { transform: scale(1.03); }
.news-thumb-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    background: #ECEFED;
    color: var(--text-dim);
}
.news-thumb-empty svg { width: 36px; height: 36px; }
.news-card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.news-cat {
    display: inline-block;
    align-self: flex-start;
    background: #E8F0ED;
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 12px;
    border-radius: 999px;
    margin-bottom: 12px;
    transition: var(--transition);
}
.news-card:hover .news-cat { background: var(--primary); color: #fff; }
.news-card h3 { font-size: 16px; font-weight: 700; line-height: 1.5; color: var(--text); margin-bottom: 8px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-card .news-excerpt {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    flex: 1;
    margin-bottom: 12px;
}
.news-card-footer { display: flex; align-items: center; justify-content: space-between; }
.news-date { font-size: 12px; color: var(--text-faint); }
.news-more { font-size: 13px; font-weight: 600; color: var(--primary); transition: var(--transition); }
.news-more:hover { color: var(--accent); }
.news-card-empty {
    border: 1px dashed var(--border);
    background: #FBFCFC;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    border-radius: var(--radius);
    color: var(--text-muted);
    font-size: 14px;
}
.view-all {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.view-all:hover { color: var(--accent); }

/* CTA / Form */
.cta-section {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}
.cta-section::before {
    content: "";
    position: absolute;
    top: 0; bottom: 0; left: 0; right: 0;
    background:
        linear-gradient(90deg, transparent 0%, rgba(14,107,74,0.06) 45%, rgba(220,121,48,0.08) 55%, transparent 100%);
    pointer-events: none;
}
.cta-inner { position: relative; z-index: 2; }
.cta-left .section-eyebrow { color: var(--accent); }
.cta-left .section-eyebrow::before { background: var(--accent); }
.cta-left .section-title { color: #fff; }
.cta-left .section-desc { color: #B7C2BE; }
.cta-form-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-hover);
}
.cta-form-card label {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 6px;
    display: block;
}
.cta-form-card label .required { color: var(--accent); }
.cta-form-card input,
.cta-form-card textarea {
    width: 100%;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0 12px;
    font-size: 14px;
    color: var(--text);
    background: #fff;
    transition: var(--transition);
    margin-bottom: 16px;
}
.cta-form-card input:focus,
.cta-form-card textarea:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(14,107,74,0.1);
}
.cta-form-card textarea { height: 100px; padding: 12px; resize: vertical; }
.cta-form-card .privacy-note {
    font-size: 13px;
    color: #87928E;
    text-align: center;
    margin-top: 12px;
    line-height: 1.6;
}

/* Footer */
.site-footer { background: var(--dark); border-top: 1px solid rgba(255,255,255,0.08); padding: 64px 0 0; }
.footer-grid { margin-bottom: 48px; }
.footer-brand { margin-bottom: 20px; }
.footer-brand .brand-logo { margin-bottom: 12px; }
.footer-brand .brand-name { color: #fff; }
.footer-desc { font-size: 14px; color: var(--text-dim); line-height: 1.7; max-width: 260px; margin-bottom: 16px; }
.footer-icp { font-size: 12px; color: var(--text-faint); }
.footer-col h4 {
    font-size: 14px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    font-size: 13px;
    color: var(--text-dim);
    transition: var(--transition);
}
.footer-col ul li a:hover { color: #fff; }
.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 13px;
    color: var(--text-dim);
    margin-bottom: 10px;
    line-height: 1.6;
}
.footer-contact svg { width: 14px; height: 14px; flex-shrink: 0; margin-top: 4px; color: var(--primary); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
}
.footer-bottom p { font-size: 13px; color: var(--text-faint); }

/* Responsive breakpoints */
@media (max-width: 1023.98px) {
    .nav-toggle {
        display: flex;
        z-index: 101;
    }
    .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        display: none;
        max-height: calc(100vh - 72px);
        overflow-y: auto;
    }
    .main-nav.open { display: flex; }
    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }
    .main-nav ul li a {
        padding: 0;
        line-height: 48px;
        border-bottom: 1px solid var(--border-light);
        border-left: 3px solid transparent;
        padding-left: 16px;
        font-size: 15px;
        white-space: normal;
    }
    .main-nav ul li:last-child a { border-bottom: none; }
    .main-nav ul li a.active {
        border-left: 3px solid var(--primary);
        border-bottom: 1px solid var(--border-light);
        color: var(--primary);
        background: #F7FAF8;
    }
    .nav-cta { display: none; }
    .hero-metrics { flex-wrap: wrap; }
    .hero-metric {
        flex: 1 1 100%;
        border-left: none;
        border-top: 1px solid rgba(255,255,255,0.2);
        padding: 16px 0 !important;
        text-align: center;
    }
    .hero-metric:first-child { border-top: none; }
    .timeline-line { left: 24px; }
    .timeline-item, .timeline-item:nth-child(even) {
        width: 100%;
        margin-left: 0;
        padding-right: 0;
        padding-left: 64px;
        text-align: left;
    }
    .timeline-dot, .timeline-item:nth-child(even) .timeline-dot {
        right: auto;
        left: 9px;
    }
    .plan-grid { flex-direction: column; gap: 24px; }
    .plan-card.featured { margin-top: 0; }
    .section { padding: 64px 0; }
}

@media (max-width: 767.98px) {
    body { font-size: 15px; }
    .container { padding-left: 16px; padding-right: 16px; }
    .hero { padding: 140px 0 80px; }
    .hero h1 { font-size: 32px; }
    .hero-sub { font-size: 18px; }
    .hero-desc { font-size: 15px; }
    .hero-ctas { flex-direction: column; }
    .hero-ctas .btn { width: 100%; }
    .section-title { font-size: 26px; }
    .trust-list { gap: 12px; }
    .trust-item { flex: 1 1 calc(50% - 12px); justify-content: center; }
    .capability-card { padding: 20px; }
    .cta-form-card { padding: 24px; }
    .footer-grid .cell { margin-bottom: 32px; }
    .timeline-item, .timeline-item:nth-child(even) { padding-left: 48px; }
    .timeline-dot, .timeline-item:nth-child(even) .timeline-dot { left: 3px; width: 28px; height: 28px; }
    .timeline-line { left: 16px; }
}

@media (max-width: 520px) {
    .trust-item { flex: 1 1 100%; }
    .plan-card { padding: 24px; }
    .news-card { margin-bottom: 16px; }
}

/* roulang page: category1 */
:root {
  --color-primary: #0E6B4A;
  --color-accent: #DC7930;
  --color-bg: #F4F6F5;
  --color-dark: #1B2226;
  --color-card: #FFFFFF;
  --color-border: #D9DEDD;
  --color-line: #E4E8E6;
  --color-text: #2A2E2D;
  --color-muted: #6C7471;
  --color-deep-muted: #9AA5A1;
  --color-light-muted: #DCE4E1;
  --radius: 2px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 3px rgba(16,32,28,0.08);
  --shadow-hover: 0 6px 16px rgba(16,32,28,0.10);
  --transition: 0.2s ease;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--color-line);
}
.header-inner {
  max-width: 1200px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo { display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 40px; height: 40px; display: block; flex-shrink: 0; }
.brand-name { font-size: 18px; font-weight: 800; color: var(--color-text); letter-spacing: 0.02em; white-space: nowrap; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav ul { display: flex; list-style: none; margin: 0; padding: 0; }
.main-nav li a {
  display: block;
  padding: 20px 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  position: relative;
  transition: color var(--transition);
}
.main-nav li a:hover { color: var(--color-primary); }
.main-nav li a.active { color: var(--color-primary); }
.main-nav li a.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--color-primary);
}
.nav-cta {
  height: 38px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
  white-space: nowrap;
}
.nav-cta:hover { background: #C4661F; color: #FFFFFF; }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; flex-direction: column; gap: 4px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition);
}
.button:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.button-primary { background: var(--color-accent); color: #FFFFFF; }
.button-primary:hover { background: #C4661F; color: #FFFFFF; }
.button-secondary {
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
}
.button-secondary:hover { background: var(--color-primary); color: #FFFFFF; }
.button-lg { height: 48px; padding: 0 32px; font-size: 15px; }
.button-md { height: 40px; padding: 0 24px; font-size: 14px; }

/* Category Hero */
.category-hero {
  position: relative;
  margin-top: 72px;
  padding: 128px 0 72px;
  background: linear-gradient(180deg, rgba(27,34,38,0.72) 0%, rgba(27,34,38,0.66) 50%, rgba(27,34,38,0.78) 100%), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #FFFFFF;
}
.category-breadcrumb {
  font-size: 12px;
  color: var(--color-deep-muted);
  margin-bottom: 16px;
  letter-spacing: 0.04em;
}
.category-breadcrumb a { color: var(--color-deep-muted); }
.category-breadcrumb a:hover { color: var(--color-light-muted); }
.category-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 16px;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}
.category-desc {
  max-width: 700px;
  font-size: 14px;
  color: var(--color-light-muted);
  line-height: 1.8;
  margin: 0;
}

/* Section Head */
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}
.section-tag {
  display: inline-block;
  font-family: "Rajdhani", "Noto Sans SC", sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.section-tag.light { color: var(--color-light-muted); }
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin: 0 0 16px;
  letter-spacing: 0.02em;
}
.section-head p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0;
}

/* Products Section */
.products-section {
  padding: 96px 0;
  background: var(--color-bg);
}
.product-grid { row-gap: 32px; }
.product-card {
  background: #FFFFFF;
  border: 1px solid var(--color-line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.product-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(14,107,74,0.45);
}
.card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #ECEFED;
  position: relative;
}
.card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.product-card:hover .card-thumb img { transform: scale(1.03); }
.card-body { padding: 20px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 10px;
  line-height: 1.4;
  color: var(--color-text);
}
.card-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.6;
  margin: 0 0 16px;
  flex: 1;
}
.card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
}
.card-link .arrow { margin-left: 4px; transition: margin-left var(--transition); }
.card-link:hover { color: var(--color-accent); }
.card-link:hover .arrow { margin-left: 8px; }

/* Features Strip */
.features-strip {
  padding: 80px 0;
  background: #FFFFFF;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
}
.feature-item {
  text-align: center;
  padding: 24px 16px;
}
.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
}
.feature-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--color-text);
}
.feature-item p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0 auto;
  max-width: 280px;
  line-height: 1.7;
}

/* CTA Section */
.cta-section {
  background: var(--color-dark);
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(14,107,74,0.22) 0%, transparent 40%, rgba(220,121,48,0.16) 100%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-text h2 {
  font-size: 28px;
  font-weight: 700;
  color: #FFFFFF;
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.cta-text p {
  font-size: 16px;
  color: #B7C2BE;
  margin: 0;
}

/* Back Home */
.back-home {
  background: var(--color-bg);
  padding: 48px 0 64px;
  text-align: center;
  border-top: 1px solid var(--color-line);
}
.back-home p {
  font-size: 14px;
  color: var(--color-muted);
  margin: 0 0 16px;
}

/* Footer */
.site-footer {
  background: var(--color-dark);
  color: var(--color-deep-muted);
  padding: 56px 0 0;
  font-size: 13px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-grid { padding-bottom: 40px; }
.footer-brand .brand-name { color: #FFFFFF; }
.footer-brand a.brand-logo { margin-bottom: 16px; display: inline-flex; }
.footer-desc {
  font-size: 13px;
  color: var(--color-deep-muted);
  line-height: 1.7;
  margin: 12px 0 16px;
}
.footer-icp { font-size: 12px; color: #7D8884; margin: 0; }
.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #FFFFFF;
  margin: 0 0 16px;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { color: var(--color-deep-muted); font-size: 13px; transition: color var(--transition); }
.footer-col a:hover { color: #FFFFFF; }
.footer-contact { font-style: normal; }
.footer-contact li { margin-bottom: 8px; color: var(--color-deep-muted); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 16px 0;
  text-align: center;
  font-size: 13px;
  color: #7D8884;
}
.footer-bottom p { margin: 0; }

/* Responsive */
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #FFFFFF;
    flex-direction: column;
    align-items: stretch;
    padding: 0 24px 24px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    display: none;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .main-nav li a { padding: 14px 0; border-bottom: 1px solid var(--color-line); font-size: 15px; }
  .main-nav li a.active::after { left: 0; transform: none; width: 3px; }
  .main-nav .nav-cta { margin-top: 16px; width: 100%; height: 42px; }
  .category-hero h1 { font-size: 32px; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .products-section { padding: 56px 0; }
  .features-strip { padding: 48px 0; }
  .cta-section { padding: 48px 0; }
  .section-head h2 { font-size: 26px; }
  .category-hero { padding: 104px 0 48px; }
  .category-hero h1 { font-size: 28px; }
  .header-inner { padding: 0 16px; }
  .container { padding: 0 16px; }
}

/* roulang page: article */
:root {
            --color-primary: #0E6B4A;
            --color-primary-hover: #0A533A;
            --color-accent: #DC7930;
            --color-accent-hover: #C4661F;
            --color-bg: #F4F6F5;
            --color-dark: #1B2226;
            --color-card: #FFFFFF;
            --color-border: #D9DEDD;
            --color-border-light: #E4E8E6;
            --color-text: #2A2E2D;
            --color-muted: #6C7471;
            --color-muted-dark: #9AA5A1;
            --color-on-dark: #DCE4E1;
            --color-dark-muted: #B7C2BE;
            --radius: 2px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(16, 32, 28, 0.08);
            --shadow-hover: 0 6px 16px rgba(16, 32, 28, 0.10);
            --transition: 0.2s ease;
            --header-h: 72px;
            --container-w: 1200px;
            --spacing-section: 96px;
            --spacing-section-mobile: 56px;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        ul,
        ol {
            list-style-position: inside;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container.narrow {
            max-width: 760px;
            padding: 0 20px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            border-radius: var(--radius);
            cursor: pointer;
            border: none;
            transition: all var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .btn:focus {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-accent-hover);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-lg {
            height: 48px;
            padding: 0 32px;
            font-size: 16px;
        }
        .btn-md {
            height: 40px;
            padding: 0 24px;
            font-size: 14px;
        }
        .btn-sm {
            height: 32px;
            padding: 0 16px;
            font-size: 12px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-h);
            box-shadow: 0 1px 4px rgba(16, 32, 28, 0.04);
        }
        .header-inner {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            display: block;
        }
        .brand-mark svg {
            width: 100%;
            height: 100%;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--color-text);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 2px;
            margin: 0;
            padding: 0;
        }
        .main-nav ul li {
            margin: 0;
        }
        .main-nav ul a {
            display: inline-block;
            padding: 22px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            position: relative;
            white-space: nowrap;
        }
        .main-nav ul a:hover {
            color: var(--color-primary);
        }
        .main-nav ul a.active {
            color: var(--color-primary);
        }
        .main-nav ul a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
        }
        .nav-cta {
            height: 38px;
            padding: 0 22px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 600;
            margin-left: 8px;
            white-space: nowrap;
            transition: background var(--transition);
        }
        .nav-cta:hover {
            background: var(--color-accent-hover);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 4px;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            transition: all 0.2s ease;
            border-radius: 2px;
        }
        .nav-toggle:hover span {
            background: var(--color-primary);
        }
        .article-main {
            min-height: calc(100vh - var(--header-h));
        }
        .article-head {
            background: linear-gradient(180deg, rgba(27, 34, 38, 0.68), rgba(27, 34, 38, 0.92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-color: var(--color-dark);
            padding: 72px 0 56px;
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .article-head .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 24px;
            align-items: center;
        }
        .article-head .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .article-head .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .article-head .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.3);
        }
        .article-head .breadcrumb .current {
            color: rgba(255, 255, 255, 0.9);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 360px;
        }
        .article-head .article-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            max-width: 780px;
            margin-bottom: 18px;
            color: #fff;
        }
        .article-head .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            align-items: center;
        }
        .article-head .article-meta .meta-sep {
            width: 3px;
            height: 3px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
        }
        .article-head .article-meta .category-badge {
            display: inline-block;
            background: rgba(14, 107, 74, 0.5);
            border: 1px solid rgba(14, 107, 74, 0.6);
            color: rgba(255, 255, 255, 0.9);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 3px 14px;
        }
        .article-content-wrap {
            background: var(--color-bg);
            padding: 56px 0 72px;
        }
        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background: #fff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius);
            padding: 48px 48px 40px;
            box-shadow: var(--shadow-sm);
        }
        .article-body> :first-child {
            margin-top: 0;
        }
        .article-body p {
            margin-bottom: 24px;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin: 36px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text);
        }
        .article-body h2::before {
            content: '';
            display: inline-block;
            width: 32px;
            height: 2px;
            background: var(--color-primary);
            margin-right: 10px;
            vertical-align: middle;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            margin: 28px 0 12px;
            color: var(--color-text);
        }
        .article-body blockquote {
            border-left: 3px solid var(--color-primary);
            background: #F1F3F2;
            padding: 16px 24px;
            font-size: 15px;
            color: #4A504D;
            margin-bottom: 24px;
            border-radius: 0 var(--radius) var(--radius) 0;
        }
        .article-body pre {
            background: var(--color-dark);
            color: #E8F0ED;
            font-size: 13px;
            font-family: "Rajdhani", "Noto Sans SC", sans-serif;
            border-radius: 4px;
            padding: 18px 20px;
            overflow-x: auto;
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .article-body code {
            background: #E8F0ED;
            color: var(--color-primary);
            font-size: 13px;
            padding: 2px 6px;
            border-radius: 2px;
            font-family: "Rajdhani", monospace;
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
        }
        .article-body ul,
        .article-body ol {
            margin-bottom: 24px;
            padding-left: 24px;
        }
        .article-body ul li {
            margin-bottom: 8px;
            list-style-type: disc;
        }
        .article-body ul li::marker {
            color: var(--color-primary);
        }
        .article-body ol li {
            margin-bottom: 8px;
            list-style-type: decimal;
        }
        .article-body ol li::marker {
            color: var(--color-accent);
            font-weight: 600;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin-bottom: 24px;
            border: 1px solid var(--color-border);
            font-size: 14px;
        }
        .article-body table th {
            background: #E8F0ED;
            font-weight: 600;
            padding: 10px 14px;
            text-align: left;
            border: 1px solid var(--color-border);
            color: var(--color-text);
        }
        .article-body table td {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
        }
        .article-body table tr:nth-child(even) {
            background: #FAFBFA;
        }
        .article-body img {
            max-width: 100%;
            border-radius: var(--radius);
            margin: 24px 0 16px;
        }
        .article-body a {
            color: var(--color-primary);
            font-weight: 500;
        }
        .article-body a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }
        .article-tags-section {
            margin-top: 32px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--color-border-light);
        }
        .article-tags-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            margin-right: 4px;
        }
        .article-tag {
            display: inline-block;
            background: #E8F0ED;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            transition: all var(--transition);
        }
        .article-tag:hover {
            background: var(--color-primary);
            color: #fff;
            cursor: default;
        }
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 24px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            transition: color var(--transition);
        }
        .back-link:hover {
            color: var(--color-accent);
        }
        .back-link svg {
            width: 16px;
            height: 16px;
        }
        .related-posts {
            background: #fff;
            padding: var(--spacing-section) 0;
            border-top: 1px solid var(--color-border-light);
        }
        .related-posts .section-head {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 40px;
        }
        .related-posts .section-tag {
            font-family: "Rajdhani", "Noto Sans SC", sans-serif;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            letter-spacing: 0.05em;
        }
        .related-posts .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text);
            margin: 0;
        }
        .related-grid {
            margin-top: 8px;
        }
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--color-card);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .news-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .news-card .card-cover {
            width: 100%;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #ECEFED;
        }
        .news-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }
        .news-card:hover .card-cover img {
            transform: scale(1.03);
        }
        .news-card .card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .card-badge {
            display: inline-block;
            background: #E8F0ED;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            padding: 3px 12px;
            margin-bottom: 12px;
            width: fit-content;
            max-width: 100%;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .news-card .card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition);
        }
        .news-card:hover .card-title {
            color: var(--color-primary);
        }
        .news-card .card-desc {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: var(--color-muted-dark);
            border-top: 1px solid var(--color-border-light);
            padding-top: 14px;
            margin-top: auto;
        }
        .news-card .read-more {
            color: var(--color-muted-dark);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }
        .news-card .read-more:hover {
            color: var(--color-accent);
        }
        .not-found {
            padding: 120px 0;
            text-align: center;
            background: var(--color-bg);
            min-height: 60vh;
            display: flex;
            align-items: center;
        }
        .not-found .container {
            max-width: 600px;
        }
        .not-found h1 {
            font-size: 36px;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 16px;
        }
        .not-found p {
            color: var(--color-muted);
            font-size: 16px;
            margin-bottom: 32px;
        }
        .not-found .btn {
            margin: 0 auto;
        }
        .site-footer {
            background: var(--color-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 64px 0 0;
            color: var(--color-muted-dark);
        }
        .site-footer .brand-logo .brand-name {
            color: #fff;
        }
        .footer-grid {
            padding-bottom: 48px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted-dark);
            margin: 16px 0 12px;
        }
        .footer-icp {
            font-size: 12px;
            color: #7D8884;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: var(--color-muted-dark);
            transition: color var(--transition);
        }
        .footer-col ul a:hover {
            color: #fff;
        }
        .footer-contact li {
            font-size: 13px;
            color: var(--color-muted-dark);
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #7D8884;
        }
        @media (max-width: 1023px) {
            .header-inner {
                padding: 0 20px;
            }
            .nav-toggle {
                display: flex;
                order: 3;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 8px 20px 20px;
                box-shadow: 0 8px 20px rgba(16, 32, 28, 0.08);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
            }
            .main-nav.open {
                display: block;
            }
            .main-nav ul {
                flex-direction: column;
                gap: 0;
            }
            .main-nav ul a {
                display: block;
                padding: 14px 12px;
                border-left: 3px solid transparent;
                font-size: 15px;
            }
            .main-nav ul a.active {
                border-left-color: var(--color-primary);
            }
            .main-nav ul a.active::after {
                display: none;
            }
            .nav-cta {
                display: block;
                margin: 12px 0 0;
                height: 42px;
                text-align: center;
                line-height: 42px;
                width: 100%;
            }
        }
        @media (max-width: 767px) {
            :root {
                --spacing-section: 56px;
            }
            .article-head {
                padding: 44px 0 36px;
            }
            .article-head .article-title {
                font-size: 28px;
            }
            .article-content-wrap {
                padding: 32px 0 48px;
            }
            .article-body {
                padding: 28px 20px 24px;
                border-left: none;
                border-right: none;
            }
            .article-body h2 {
                font-size: 21px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .article-body pre {
                font-size: 12px;
                padding: 14px;
            }
            .related-posts {
                padding: var(--spacing-section) 0;
            }
            .related-posts .section-head {
                flex-direction: column;
                gap: 6px;
                margin-bottom: 24px;
            }
            .news-card {
                margin-bottom: 20px;
            }
            .footer-grid {
                padding-bottom: 32px;
            }
            .footer-col {
                margin-bottom: 28px;
            }
            .container,
            .header-inner {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        @media (max-width: 520px) {
            .brand-name {
                font-size: 16px;
            }
            .article-head .article-title {
                font-size: 24px;
            }
            .article-head .breadcrumb .current {
                max-width: 220px;
            }
            .not-found {
                padding: 80px 0;
            }
            .not-found h1 {
                font-size: 28px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #0E6B4A;
            --primary-dark: #0A5438;
            --accent: #DC7930;
            --accent-hover: #C4661F;
            --bg-light: #F4F6F5;
            --bg-white: #FFFFFF;
            --bg-dark: #1B2226;
            --border: #D9DEDD;
            --border-light: #E4E8E6;
            --text-main: #2A2E2D;
            --text-muted: #6C7471;
            --text-footer: #9AA5A1;
            --text-footer-light: #DCE4E1;
            --radius: 2px;
            --radius-pill: 999px;
            --shadow-default: 0 1px 3px rgba(16, 32, 28, 0.08);
            --shadow-hover: 0 6px 16px rgba(16, 32, 28, 0.10);
            --transition: 0.2s ease;
            --container-max: 1200px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
            background: var(--bg-white);
            -webkit-font-smoothing: antialiased;
            padding-top: 72px;
        }

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

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
        }

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

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
        }

        .header-inner {
            max-width: var(--container-max);
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-mark {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav ul {
            display: flex;
            list-style: none;
            gap: 0;
        }

        .main-nav ul li a {
            display: block;
            padding: 20px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            text-decoration: none;
            position: relative;
            transition: color 0.2s ease;
        }

        .main-nav ul li a:hover {
            color: var(--primary);
        }

        .main-nav ul li a.active {
            color: var(--primary);
        }

        .main-nav ul li a.active::after {
            content: '';
            position: absolute;
            left: 16px;
            bottom: 0;
            width: 24px;
            height: 2px;
            background: var(--primary);
        }

        .nav-cta {
            display: inline-block;
            height: 38px;
            line-height: 38px;
            padding: 0 22px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius);
            text-decoration: none;
            transition: background 0.2s ease, transform 0.2s ease;
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-cta:focus,
        .btn:focus,
        .nav-toggle:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 10px;
        }

        .nav-toggle span {
            display: block;
            height: 2px;
            width: 24px;
            background: var(--text-main);
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            position: relative;
            background: linear-gradient(180deg, rgba(27, 34, 38, 0.72), rgba(27, 34, 38, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 100px 0 88px;
            color: #fff;
        }

        .page-hero .breadcrumb {
            font-size: 13px;
            color: var(--text-footer);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }

        .page-hero .breadcrumb a {
            color: var(--text-footer);
        }

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

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin: 0 0 20px;
            color: #fff;
        }

        .page-hero-desc {
            max-width: 680px;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-footer-light);
            margin: 0;
        }

        /* ===== Metric Bar ===== */
        .metric-bar {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 36px 0;
        }

        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
        }

        .metric-item {
            text-align: center;
            padding: 8px 16px;
            border-left: 1px solid rgba(255, 255, 255, 0.1);
        }

        .metric-item:first-child {
            border-left: none;
        }

        .metric-number {
            font-size: 30px;
            font-weight: 800;
            color: var(--accent);
            font-family: "Rajdhani", "Noto Sans SC", "PingFang SC", sans-serif;
            line-height: 1.2;
        }

        .metric-label {
            font-size: 13px;
            color: var(--text-footer);
            margin-top: 4px;
        }

        /* ===== Capability Alternating ===== */
        .capability-section {
            background: var(--bg-light);
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            margin-bottom: 64px;
        }

        .section-head .section-mark {
            display: inline-block;
            width: 32px;
            height: 2px;
            background: var(--primary);
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .section-head p {
            font-size: 14px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        .capability-row {
            margin-bottom: 80px;
            align-items: center;
        }

        .capability-row:last-child {
            margin-bottom: 0;
        }

        .capability-image {
            position: relative;
        }

        .capability-image::before {
            content: '';
            position: absolute;
            top: -14px;
            left: -14px;
            width: 100%;
            height: 100%;
            border: 1px solid var(--primary);
            border-radius: var(--radius);
            opacity: 0.35;
            z-index: 0;
            pointer-events: none;
        }

        .capability-image img {
            position: relative;
            z-index: 1;
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius);
            box-shadow: var(--shadow-default);
        }

        .capability-text {
            padding: 16px 8px;
        }

        .capability-text .section-mark {
            display: inline-block;
            width: 32px;
            height: 2px;
            background: var(--primary);
            margin-bottom: 16px;
        }

        .capability-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 12px;
            letter-spacing: 0.02em;
        }

        .capability-text p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

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

        .capability-list li {
            position: relative;
            padding-left: 22px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .capability-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--primary);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-white);
            padding: 96px 0;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 14px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }

        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: var(--shadow-default);
        }

        .faq-item summary {
            cursor: pointer;
            padding: 20px 56px 20px 24px;
            position: relative;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            list-style: none;
            transition: color 0.2s ease;
        }

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

        .faq-item summary::after {
            content: '+';
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            line-height: 24px;
            text-align: center;
            transition: transform 0.2s ease;
        }

        .faq-item[open] summary {
            color: var(--primary);
        }

        .faq-item[open] summary::after {
            content: '−';
            transform: translateY(-50%) rotate(180deg);
        }

        .faq-answer {
            padding: 4px 24px 20px 24px;
            border-top: 1px solid var(--border);
        }

        .faq-answer p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin: 16px 0 0;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(135deg, rgba(27, 34, 38, 0.94), rgba(27, 34, 38, 0.84)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 96px 0;
            color: #fff;
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }

        .cta-text h2 {
            font-size: 28px;
            font-weight: 700;
            margin: 0 0 12px;
            color: #fff;
            letter-spacing: 0.02em;
        }

        .cta-text p {
            font-size: 16px;
            color: #B7C2BE;
            margin: 0;
            max-width: 560px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            font-weight: 600;
            border-radius: var(--radius);
            text-decoration: none;
            transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
            font-family: inherit;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            padding: 0 32px;
            height: 48px;
            font-size: 15px;
        }

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

        .btn-lg {
            height: 48px;
            padding: 0 36px;
            font-size: 15px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 72px 0 0;
            color: var(--text-footer);
        }

        .footer-grid {
            padding-bottom: 48px;
        }

        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }

        .footer-brand .brand-name {
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-footer);
            margin: 0 0 16px;
            max-width: 240px;
        }

        .footer-icp {
            font-size: 12px;
            color: #7D8884;
            margin: 0;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-footer);
            transition: color 0.2s ease;
        }

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

        .footer-contact li {
            font-size: 13px;
            color: var(--text-footer);
            line-height: 1.7;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: #7D8884;
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 8px 24px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-hover);
                max-height: 0;
                overflow: hidden;
                visibility: hidden;
                opacity: 0;
                transition: max-height 0.3s ease, opacity 0.2s ease, visibility 0.2s ease;
            }

            .main-nav.open {
                max-height: 420px;
                visibility: visible;
                opacity: 1;
            }

            .main-nav ul {
                flex-direction: column;
                margin: 0 0 16px;
            }

            .main-nav ul li a {
                padding: 14px 8px;
                border-left: 3px solid transparent;
            }

            .main-nav ul li a.active {
                border-left-color: var(--primary);
            }

            .main-nav ul li a.active::after {
                display: none;
            }

            .nav-cta {
                width: 100%;
                text-align: center;
            }

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

        @media (max-width: 768px) {
            body {
                padding-top: 64px;
            }

            .site-header {
                height: 64px;
            }

            .main-nav {
                top: 64px;
            }

            .page-hero {
                padding: 72px 0 64px;
            }

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

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

            .capability-section {
                padding: 64px 0;
            }

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

            .capability-row {
                margin-bottom: 56px;
            }

            .capability-image::before {
                display: none;
            }

            .capability-text {
                padding: 24px 0 0;
            }

            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px 0;
            }

            .metric-item:nth-child(3) {
                border-left: none;
            }

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

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 32px;
            }

            .cta-text h2 {
                font-size: 24px;
            }

            .site-footer {
                padding: 56px 0 0;
            }
        }

        @media (max-width: 520px) {
            .metric-grid {
                grid-template-columns: 1fr;
            }

            .metric-item {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, 0.08);
                padding: 16px 0;
            }

            .metric-item:first-child {
                border-top: none;
            }

            .brand-name {
                font-size: 16px;
            }

            .container {
                padding: 0 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #0E6B4A;
            --primary-hover: #0A5438;
            --accent: #DC7930;
            --accent-hover: #C4661F;
            --bg: #F4F6F5;
            --bg-card: #FFFFFF;
            --bg-dark: #1B2226;
            --border: #D9DEDD;
            --border-light: #E4E8E6;
            --text: #2A2E2D;
            --text-secondary: #6C7471;
            --text-muted: #9AA5A1;
            --text-light: #DCE4E1;
            --text-dark-muted: #7D8884;
            --radius: 2px;
            --radius-pill: 999px;
            --shadow-sm: 0 1px 3px rgba(16, 32, 28, 0.08);
            --shadow-hover: 0 6px 16px rgba(16, 32, 28, 0.10);
            --transition: 0.2s ease;
            --container-max: 1200px;
            --space-section: 96px;
            --space-section-mobile: 56px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        .grid-container {
            max-width: var(--container-max);
        }
        .section-label {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--primary);
            margin-bottom: 12px;
            font-family: "Rajdhani", "Noto Sans SC", sans-serif;
        }
        .section-label.light {
            color: var(--accent);
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.3;
            color: var(--text);
            margin: 0;
        }
        .section-head p {
            margin-top: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 720px;
        }
        .max-width-760 {
            max-width: 760px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 14px;
            line-height: 1;
            cursor: pointer;
            border: 1px solid transparent;
            transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-primary {
            background-color: var(--accent);
            color: #fff;
            padding: 0 32px;
            height: 48px;
        }
        .btn-primary:hover {
            background-color: var(--accent-hover);
            color: #fff;
        }
        .btn-secondary {
            background-color: transparent;
            border: 1px solid var(--primary);
            color: var(--primary);
            padding: 0 24px;
            height: 40px;
        }
        .btn-secondary:hover {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-dark-outline {
            background-color: transparent;
            border: 1px solid var(--text-light);
            color: var(--text-light);
            padding: 0 24px;
            height: 40px;
        }
        .btn-dark-outline:hover {
            background-color: #fff;
            color: var(--bg-dark);
            border-color: #fff;
        }
        .btn-lg {
            height: 48px;
            padding: 0 32px;
        }
        .btn-sm {
            height: 32px;
            padding: 0 16px;
            font-size: 13px;
        }
        .badge {
            display: inline-block;
            background-color: #E8F0ED;
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            line-height: 1.4;
        }
        .badge-accent {
            background-color: var(--accent);
            color: #fff;
        }
        .grid-x>.cell {
            margin-bottom: 24px;
        }
        .grid-margin-x>.cell {
            margin-bottom: 24px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: #fff;
            border-bottom: 1px solid var(--border-light);
            z-index: 1000;
            height: 72px;
        }
        .header-inner {
            max-width: var(--container-max);
            margin: 0 auto;
            height: 72px;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-mark svg {
            width: 36px;
            height: 36px;
        }
        .brand-name {
            font-size: 18px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav ul {
            list-style: none;
            display: flex;
            align-items: center;
            margin: 0;
            padding: 0;
            gap: 0;
        }
        .main-nav ul li {
            margin: 0;
        }
        .main-nav ul li a {
            display: inline-block;
            padding: 20px 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            text-decoration: none;
            position: relative;
            transition: color var(--transition);
        }
        .main-nav ul li a:hover {
            color: var(--primary);
        }
        .main-nav ul li a.active {
            color: var(--primary);
        }
        .main-nav ul li a.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background-color: var(--primary);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            padding: 0 22px;
            background-color: var(--accent);
            color: #fff;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 600;
            text-decoration: none;
            margin-left: 16px;
            transition: background var(--transition), transform var(--transition);
        }
        .nav-cta:hover {
            background-color: var(--accent-hover);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            flex-direction: column;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text);
            border-radius: 2px;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }
        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .category-hero {
            position: relative;
            background: linear-gradient(180deg, rgba(27, 34, 38, 0.52) 0%, rgba(27, 34, 38, 0.84) 100%), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 140px 0 80px;
            margin-top: 72px;
            color: #fff;
        }
        .category-hero .section-label {
            color: var(--accent);
        }
        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin: 8px 0 20px;
            letter-spacing: 0.02em;
        }
        .category-desc {
            font-size: 16px;
            color: var(--text-light);
            max-width: 720px;
            line-height: 1.8;
            margin: 0;
        }

        .stats-strip {
            background-color: var(--bg);
            padding: 48px 0;
            border-bottom: 1px solid var(--border-light);
        }
        .stats-item {
            text-align: center;
            padding: 16px 0;
            border-left: 1px solid var(--border);
        }
        .cell:first-child .stats-item {
            border-left: none;
        }
        .stats-num {
            display: block;
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            font-family: "Rajdhani", "Noto Sans SC", sans-serif;
        }
        .stats-label {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        .news-list-section {
            padding: var(--space-section) 0;
            background-color: var(--bg);
        }
        .news-groups {
            max-width: 960px;
            margin: 0 auto;
        }
        .news-group {
            margin-bottom: 48px;
        }
        .news-group:last-child {
            margin-bottom: 0;
        }
        .news-group-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 16px;
            padding-left: 16px;
            border-left: 3px solid var(--primary);
            line-height: 1.4;
        }
        .news-list {
            background-color: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 0 24px;
            min-height: 56px;
            border-bottom: 1px solid var(--border-light);
            transition: background var(--transition);
            text-decoration: none;
        }
        .news-item:last-child {
            border-bottom: none;
        }
        .news-item:hover {
            background-color: #E8F0ED;
        }
        .news-title {
            flex: 1;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color var(--transition);
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-date {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .news-arrow {
            flex-shrink: 0;
            opacity: 0.6;
            transition: opacity var(--transition), transform var(--transition);
        }
        .news-item:hover .news-arrow {
            opacity: 1;
            transform: translateX(4px);
        }

        .tag-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-card);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            max-width: 960px;
            margin: 0 auto;
        }
        .tag-item {
            display: inline-block;
            background-color: #E8F0ED;
            color: var(--primary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 20px;
            border-radius: var(--radius-pill);
            cursor: default;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            border: 1px solid transparent;
        }
        .tag-item:hover {
            background-color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        .featured-news {
            padding: var(--space-section) 0;
            background-color: var(--bg);
        }
        .featured-card {
            background-color: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .featured-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            border-bottom: 1px solid var(--border-light);
        }
        .featured-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card-body .badge {
            align-self: flex-start;
        }
        .featured-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin: 14px 0 10px;
        }
        .featured-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            margin: 0 0 16px;
        }
        .featured-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition);
        }
        .featured-card-link:hover {
            color: var(--accent);
        }

        .faq-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-card);
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .faq-item[open] {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            list-style: none;
            position: relative;
            transition: color var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background-color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
            transition: background var(--transition);
        }
        .faq-item[open] summary {
            color: var(--primary);
        }
        .faq-item[open] summary .faq-icon {
            background-color: var(--accent);
        }
        .faq-answer {
            padding: 0 24px 20px 62px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-section {
            padding: var(--space-section) 0;
            background-color: var(--bg-dark);
            background-image: linear-gradient(rgba(27, 34, 38, 0.88), rgba(27, 34, 38, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            position: relative;
        }
        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            max-width: 960px;
            margin: 0 auto;
        }
        .cta-text {
            flex: 1;
            min-width: 280px;
        }
        .cta-text .section-label {
            color: var(--accent);
        }
        .cta-text h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin: 0 0 12px;
        }
        .cta-text p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0;
        }
        .cta-action {
            flex-shrink: 0;
        }

        .site-footer {
            background-color: var(--bg-dark);
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            padding: 64px 0 32px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
        }
        .footer-brand .brand-name {
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 16px 0 12px;
        }
        .footer-icp {
            font-size: 12px;
            color: var(--text-dark-muted);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            text-transform: none;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-contact li {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dark-muted);
            margin: 0;
        }

        @media screen and (max-width: 1023px) {
            .nav-toggle {
                display: inline-flex;
            }
            .main-nav {
                position: fixed;
                top: 72px;
                left: 0;
                width: 100%;
                background-color: #fff;
                border-bottom: 1px solid var(--border-light);
                box-shadow: 0 6px 16px rgba(16, 32, 28, 0.08);
                flex-direction: column;
                align-items: flex-start;
                padding: 16px 24px;
                gap: 8px;
                display: none;
            }
            .main-nav.nav-open {
                display: flex;
            }
            .main-nav ul {
                flex-direction: column;
                width: 100%;
            }
            .main-nav ul li {
                width: 100%;
            }
            .main-nav ul li a {
                display: block;
                padding: 14px 0;
                width: 100%;
                border-bottom: 1px solid #F0F2F1;
                font-size: 15px;
            }
            .main-nav ul li a.active::after {
                display: none;
            }
            .main-nav ul li a.active {
                color: var(--primary);
                border-left: 3px solid var(--primary);
                padding-left: 12px;
            }
            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
        }

        @media screen and (max-width: 767px) {
            .category-hero {
                padding: 110px 0 60px;
                margin-top: 72px;
            }
            .category-hero h1 {
                font-size: 32px;
            }
            .category-desc {
                font-size: 15px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .news-item {
                padding: 0 16px;
                gap: 10px;
            }
            .news-title {
                font-size: 15px;
            }
            .news-date {
                font-size: 12px;
            }
            .cta-inner {
                flex-direction: column;
                gap: 24px;
            }
            .cta-text h2 {
                font-size: 26px;
            }
            .stats-strip {
                padding: 32px 0;
            }
            .stats-item {
                border-left: none;
                text-align: left;
                padding: 12px 0;
            }
            .stats-num {
                font-size: 28px;
            }
            .footer-col {
                margin-bottom: 24px;
            }
        }

        @media screen and (max-width: 520px) {
            .news-title {
                white-space: normal;
                overflow: visible;
                text-overflow: unset;
                line-height: 1.5;
            }
            .news-item {
                min-height: 64px;
                padding: 12px 16px;
            }
            .news-date {
                display: none;
            }
        }