/* roulang page: index */
:root {
  --clr-primary: #4786C3;
  --clr-primary-dark: #2E6398;
  --clr-primary-light: #E3EFF9;
  --clr-accent: #E07A3F;
  --clr-bg: #F5F7FA;
  --clr-surface: #FFFFFF;
  --clr-text: #25333F;
  --clr-muted: #6B7A88;
  --clr-border: #E3E9EF;
  --clr-footer-bg: #1E3A5F;
  --clr-footer-text: #C7D5E3;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 20px;
  --shadow-soft: 0 4px 20px rgba(30,58,95,0.06);
  --shadow-hover: 0 10px 32px rgba(30,58,95,0.12);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--clr-bg); color: var(--clr-text); line-height: 1.8; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: color 0.25s; }
a:hover { color: var(--clr-primary); }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
.container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 24px; border-radius: 8px; font-size: 15px; font-weight: 600; border: none; cursor: pointer; transition: all 0.25s; line-height: 1.4; vertical-align: middle; }
.btn:focus-visible { outline: 3px solid rgba(71,134,195,0.3); outline-offset: 2px; }
.btn-primary { background: var(--clr-primary); color: #fff; }
.btn-primary:hover { background: var(--clr-primary-dark); color: #fff; box-shadow: var(--shadow-hover); }
.btn-outline { background: var(--clr-surface); color: var(--clr-primary); border: 1.5px solid var(--clr-primary); }
.btn-outline:hover { background: var(--clr-primary-light); color: var(--clr-primary-dark); }
.btn-accent { background: var(--clr-accent); color: #fff; }
.btn-accent:hover { background: #C96A31; color: #fff; box-shadow: var(--shadow-hover); }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* ===== Header Nav ===== */
.site-header { position: relative; z-index: 100; padding-top: 16px; }
.nav-panel { display: flex; align-items: center; justify-content: space-between; background: var(--clr-surface); border-radius: 14px; box-shadow: var(--shadow-soft); padding: 12px 24px; gap: 20px; position: relative; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--clr-text); white-space: nowrap; flex-shrink: 0; }
.brand:hover { color: var(--clr-text); }
.brand-icon { width: 36px; height: 36px; background: var(--clr-primary); color: #fff; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 15px; }
.nav-links { display: flex; gap: 8px; flex: 1; justify-content: center; flex-wrap: wrap; }
.nav-link { display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; background: var(--clr-primary-light); border-radius: 10px; font-size: 14px; font-weight: 600; color: var(--clr-text); transition: all 0.25s; }
.nav-link:hover { background: var(--clr-primary); color: #fff; box-shadow: var(--shadow-hover); transform: translateY(-1px); }
.nav-link.active { background: var(--clr-primary); color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-toggle { display: none; background: var(--clr-primary-light); border: none; border-radius: 8px; width: 40px; height: 40px; color: var(--clr-primary); font-size: 18px; cursor: pointer; align-items: center; justify-content: center; transition: background 0.25s; }
.nav-toggle:hover { background: var(--clr-primary); color: #fff; }

/* ===== Hero ===== */
.hero-section { position: relative; padding: 110px 0 96px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background-image: linear-gradient(135deg, rgba(245,247,250,0.92) 0%, rgba(227,239,249,0.78) 100%), url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; }
.hero-content { position: relative; z-index: 1; max-width: 660px; }
.hero-content h1 { font-size: 36px; font-weight: 700; line-height: 1.3; letter-spacing: 0.02em; margin-bottom: 14px; color: var(--clr-text); }
.hero-sub { font-size: 17px; color: var(--clr-muted); margin-bottom: 28px; line-height: 1.7; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,0.75); border-radius: var(--radius-sm); padding: 6px 16px; font-size: 13px; color: var(--clr-primary-dark); font-weight: 600; margin-bottom: 20px; box-shadow: 0 2px 8px rgba(30,58,95,0.05); }

/* ===== Catalog ===== */
.catalog-section { padding: 40px 0 56px; }
.catalog-row { display: flex; gap: 16px; flex-wrap: wrap; }
.catalog-card { min-width: 150px; background: var(--clr-surface); border-radius: var(--radius-md); padding: 18px 22px; box-shadow: var(--shadow-soft); display: flex; align-items: center; gap: 12px; transition: all 0.25s; color: var(--clr-text); border: 1px solid transparent; }
.catalog-card i { font-size: 30px; color: var(--clr-primary); transition: transform 0.25s; }
.catalog-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: var(--clr-primary-light); }
.catalog-card:hover i { transform: translateY(-2px); }
.catalog-name { font-size: 14px; font-weight: 600; line-height: 1.3; }
.catalog-count { font-size: 12px; color: var(--clr-muted); background: var(--clr-primary-light); padding: 2px 10px; border-radius: var(--radius-sm); font-weight: 600; }

/* ===== Stats ===== */
.stats-section { padding: 44px 0; background: var(--clr-surface); border-top: 1px solid var(--clr-border); border-bottom: 1px solid var(--clr-border); }
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.stat-item .stat-num { font-size: 34px; font-weight: 700; color: var(--clr-primary); line-height: 1.2; }
.stat-item .stat-label { font-size: 14px; color: var(--clr-muted); margin-top: 4px; }

/* ===== Section Title ===== */
.section-title { font-size: 26px; font-weight: 700; margin-bottom: 32px; position: relative; padding-bottom: 14px; letter-spacing: 0.02em; }
.section-title::after { content: ''; position: absolute; bottom: 0; left: 0; width: 48px; height: 3px; background: var(--clr-primary); border-radius: 2px; }
.section-title-center { text-align: center; }
.section-title-center::after { left: 50%; transform: translateX(-50%); }

/* ===== Latest News ===== */
.latest-section { padding: 80px 0; }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item { display: flex; gap: 20px; background: var(--clr-surface); border-radius: var(--radius-md); padding: 16px; box-shadow: var(--shadow-soft); transition: all 0.25s; align-items: center; }
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.news-thumb { width: 160px; height: 120px; flex-shrink: 0; border-radius: 8px; overflow: hidden; }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-content { flex: 1; min-width: 0; }
.news-content .tag { display: inline-block; background: var(--clr-primary-light); color: var(--clr-primary-dark); font-size: 12px; font-weight: 600; padding: 2px 14px; border-radius: var(--radius-sm); margin-bottom: 6px; letter-spacing: 0.02em; }
.news-content h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; line-height: 1.5; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-content h3 a { color: var(--clr-text); }
.news-content h3 a:hover { color: var(--clr-primary); }
.news-content p { font-size: 14px; color: var(--clr-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; line-height: 1.7; }
.news-meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--clr-muted); }
.news-meta a { color: var(--clr-primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; font-size: 13px; }
.news-meta a:hover { color: var(--clr-primary-dark); }
.news-empty { background: var(--clr-surface); border-radius: var(--radius-md); padding: 48px 24px; text-align: center; color: var(--clr-muted); box-shadow: var(--shadow-soft); font-size: 15px; }

/* ===== Featured ===== */
.featured-section { padding: 80px 0; background: var(--clr-surface); }
.featured-card { background: var(--clr-surface); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-soft); transition: all 0.25s; height: 100%; display: flex; flex-direction: column; }
.featured-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.featured-img { height: 220px; position: relative; overflow: hidden; }
.featured-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.featured-card:hover .featured-img img { transform: scale(1.04); }
.featured-tag { position: absolute; top: 16px; left: 16px; background: var(--clr-accent); color: #fff; font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: var(--radius-sm); z-index: 2; box-shadow: 0 2px 8px rgba(0,0,0,0.12); }
.featured-body { padding: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.featured-body h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; line-height: 1.45; }
.featured-body h3 a { color: var(--clr-text); }
.featured-body h3 a:hover { color: var(--clr-primary); }
.featured-body p { font-size: 14px; color: var(--clr-muted); margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.featured-meta { font-size: 13px; color: var(--clr-muted); display: flex; gap: 16px; }

/* ===== Recommend ===== */
.recommend-section { padding: 80px 0; }
.recommend-card { background: var(--clr-surface); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-soft); transition: all 0.25s; height: 100%; display: flex; flex-direction: column; }
.recommend-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.recommend-img { height: 120px; overflow: hidden; }
.recommend-img img { width: 100%; height: 100%; object-fit: cover; }
.recommend-body { padding: 14px 16px 16px; }
.recommend-body .tag { font-size: 12px; color: var(--clr-primary-dark); background: var(--clr-primary-light); padding: 2px 10px; border-radius: var(--radius-sm); display: inline-block; margin-bottom: 6px; font-weight: 600; }
.recommend-body h3 { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin: 0; line-height: 1.5; }
.recommend-body h3 a { color: var(--clr-text); }
.recommend-body h3 a:hover { color: var(--clr-primary); }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: var(--clr-surface); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: border-color 0.25s, box-shadow 0.25s; }
.faq-item:hover { border-color: var(--clr-primary); box-shadow: var(--shadow-soft); }
.faq-question { padding: 18px 22px; font-size: 16px; font-weight: 600; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: background 0.25s; user-select: none; }
.faq-question:hover { background: var(--clr-primary-light); }
.faq-question i { transition: transform 0.3s; color: var(--clr-primary); font-size: 14px; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { display: none; padding: 0 22px 18px; font-size: 14px; color: var(--clr-muted); line-height: 1.75; }
.faq-item.open .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; background: var(--clr-primary-light); text-align: center; }
.cta-section h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: var(--clr-muted); margin-bottom: 28px; font-size: 15px; }
.cta-buttons { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; align-items: center; }
.back-top { display: inline-block; margin-top: 18px; color: var(--clr-muted); font-size: 14px; text-align: center; width: 100%; }
.back-top:hover { color: var(--clr-primary); }

/* ===== Footer ===== */
.site-footer { background: var(--clr-footer-bg); color: var(--clr-footer-text); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.footer-brand .brand-icon { background: rgba(255,255,255,0.15); color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.75; max-width: 360px; }
.footer-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 14px; }
.footer-links a { display: block; color: var(--clr-footer-text); font-size: 14px; padding: 4px 0; transition: color 0.25s; }
.footer-links a:hover { color: #fff; }
.footer-links a i { width: 18px; margin-right: 4px; color: var(--clr-primary); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 18px; text-align: center; font-size: 14px; color: var(--clr-footer-text); }

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--clr-surface); border-radius: 0 0 14px 14px; box-shadow: var(--shadow-hover); padding: 16px; flex-direction: column; gap: 8px; margin-top: 8px; z-index: 200; }
  .nav-panel.open .nav-links { display: flex; }
  .nav-link { width: 100%; justify-content: center; }
  .nav-toggle { display: inline-flex; }
  .nav-actions .btn { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .hero-section { padding: 80px 0 64px; }
  .hero-content h1 { font-size: 27px; }
  .hero-sub { font-size: 15px; }
  .section-title { font-size: 22px; }
  .news-item { flex-direction: column; align-items: flex-start; }
  .news-thumb { width: 100%; height: 170px; }
  .featured-img { height: 170px; }
  .cta-section { padding: 56px 0; }
  .cta-section h2 { font-size: 22px; }
  .catalog-row { flex-wrap: nowrap; overflow-x: auto; padding-bottom: 8px; -webkit-overflow-scrolling: touch; }
  .catalog-card { min-width: 140px; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  .nav-panel { padding: 10px 16px; }
  .brand-text { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .news-item { padding: 12px; }
  .news-meta { flex-direction: column; align-items: flex-start; gap: 4px; }
  .stats-row { grid-template-columns: 1fr; }
}

/* roulang page: category1 */
:root {
            --clr-primary: #4786C3;
            --clr-primary-dark: #2E6398;
            --clr-primary-light: #E3EFF9;
            --clr-accent: #E07A3F;
            --clr-bg: #F5F7FA;
            --clr-surface: #FFFFFF;
            --clr-text: #25333F;
            --clr-muted: #6B7A88;
            --clr-border: #E3E9EF;
            --clr-footer-bg: #1E3A5F;
            --clr-footer-text: #C7D5E3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-pill: 20px;
            --shadow-soft: 0 4px 20px rgba(30, 58, 95, 0.06);
            --shadow-hover: 0 10px 32px rgba(30, 58, 95, 0.12);
            --font-base: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-base);
            background-color: var(--clr-bg);
            color: var(--clr-text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: var(--clr-primary);
            transition: color .2s ease;
        }
        a:hover {
            color: var(--clr-primary-dark);
        }
        img {
            max-width: 100%;
            display: block;
        }
        .container {
            max-width: 1200px;
        }
        .section-pad {
            padding: 88px 0;
        }
        .bg-white {
            background-color: #fff;
        }
        .section-head {
            margin-bottom: 40px;
        }
        .section-head .sec-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            letter-spacing: .04em;
            margin-bottom: 14px;
        }
        .section-head .sec-tag i {
            font-size: 12px;
        }
        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.35;
            letter-spacing: .02em;
            color: var(--clr-text);
            margin: 0;
            position: relative;
            display: inline-block;
        }
        .section-head h2::after {
            content: "";
            display: block;
            width: 42px;
            height: 3px;
            border-radius: 4px;
            background: var(--clr-accent);
            margin-top: 12px;
        }
        .section-head p.sec-desc {
            color: var(--clr-muted);
            font-size: 15px;
            margin-top: 14px;
            max-width: 640px;
            line-height: 1.7;
        }

        /* ===== Buttons ===== */
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-primary);
            color: #fff !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 10px;
            border: none;
            transition: background .25s, box-shadow .25s, transform .2s;
            box-shadow: 0 4px 16px rgba(71, 134, 195, 0.22);
        }
        .btn-main:hover {
            background: var(--clr-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(46, 99, 152, 0.28);
            color: #fff;
        }
        .btn-main:focus {
            outline: 3px solid rgba(71, 134, 195, 0.3);
            outline-offset: 2px;
        }
        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--clr-primary) !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 10px;
            border: 1.5px solid var(--clr-primary);
            transition: background .25s, box-shadow .25s, transform .2s;
        }
        .btn-ghost:hover {
            background: var(--clr-primary-light);
            transform: translateY(-2px);
            color: var(--clr-primary-dark) !important;
        }
        .btn-ghost:focus {
            outline: 3px solid rgba(71, 134, 195, 0.3);
            outline-offset: 2px;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-accent);
            color: #fff !important;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 26px;
            border-radius: 10px;
            border: none;
            transition: background .25s, box-shadow .25s, transform .2s;
            box-shadow: 0 4px 16px rgba(224, 122, 63, 0.24);
        }
        .btn-accent:hover {
            background: #C96A31;
            transform: translateY(-2px);
            color: #fff;
            box-shadow: 0 8px 24px rgba(224, 122, 63, 0.3);
        }
        .btn-accent:focus {
            outline: 3px solid rgba(224, 122, 63, 0.3);
            outline-offset: 2px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            padding-top: 18px;
            position: relative;
            z-index: 100;
            margin-bottom: 8px;
        }
        .nav-panel {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 12px 18px;
            flex-wrap: wrap;
            transition: box-shadow .25s;
        }
        .nav-panel:hover {
            box-shadow: var(--shadow-hover);
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(46, 99, 152, 0.25);
        }
        .brand-text {
            font-size: 19px;
            font-weight: 700;
            letter-spacing: .02em;
            color: var(--clr-text);
            line-height: 1.2;
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            font-size: 14px;
            font-weight: 600;
            padding: 9px 18px;
            border-radius: 10px;
            transition: background .25s, color .25s, box-shadow .25s;
        }
        .nav-link i {
            font-size: 13px;
        }
        .nav-link:hover {
            background: var(--clr-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(71, 134, 195, 0.26);
        }
        .nav-link.active {
            background: var(--clr-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(71, 134, 195, 0.3);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 9px;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: none;
            border-radius: 10px;
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            font-size: 17px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background .2s, color .2s;
        }
        .nav-toggle:hover {
            background: var(--clr-primary);
            color: #fff;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 88px 0 78px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-radius: 0 0 28px 28px;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(105deg, rgba(245, 247, 250, 0.94) 0%, rgba(227, 239, 249, 0.82) 55%, rgba(227, 239, 249, 0.6) 100%);
            z-index: 1;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(71, 134, 195, 0.08) 1px, transparent 1px);
            background-size: 22px 22px;
            pointer-events: none;
            z-index: 0;
        }
        .category-hero .container {
            position: relative;
            z-index: 2;
        }
        .category-hero .hero-inner {
            max-width: 680px;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-surface);
            border: 1px solid var(--clr-border);
            color: var(--clr-primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 7px 16px;
            border-radius: var(--radius-pill);
            box-shadow: var(--shadow-soft);
            margin-bottom: 22px;
            letter-spacing: .04em;
        }
        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: .02em;
            color: var(--clr-text);
            margin-bottom: 16px;
        }
        .category-hero .lead {
            font-size: 16px;
            color: var(--clr-muted);
            line-height: 1.8;
            max-width: 540px;
            margin-bottom: 28px;
        }
        .category-hero .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .category-hero .hero-divider {
            margin-top: 48px;
            border-top: 1px solid rgba(46, 99, 152, 0.14);
            padding-top: 16px;
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            max-width: 560px;
        }
        .hero-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--clr-primary-dark);
            font-size: 13px;
            font-weight: 600;
        }
        .hero-stat i {
            font-size: 16px;
            color: var(--clr-accent);
        }

        /* ===== Category Highlights ===== */
        .highlight-card {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            padding: 30px 24px;
            box-shadow: var(--shadow-soft);
            border-top: 3px solid var(--clr-primary);
            height: 100%;
            transition: box-shadow .25s, transform .25s;
            position: relative;
        }
        .highlight-card::before {
            content: "";
            position: absolute;
            top: 12px;
            right: 14px;
            width: 34px;
            height: 34px;
            border: 2px solid var(--clr-primary-light);
            border-radius: 50%;
            opacity: .5;
        }
        .highlight-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .highlight-card .h-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            font-size: 20px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            transition: background .25s, color .25s;
        }
        .highlight-card:hover .h-icon {
            background: var(--clr-primary);
            color: #fff;
        }
        .highlight-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--clr-text);
        }
        .highlight-card p {
            font-size: 14px;
            color: var(--clr-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== List Cards ===== */
        .list-card {
            display: flex;
            gap: 20px;
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-soft);
            transition: box-shadow .25s, transform .25s;
            height: 100%;
        }
        .list-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .list-card .list-card-img {
            flex-shrink: 0;
            width: 160px;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            background: var(--clr-primary-light);
        }
        .list-card .list-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .list-card:hover .list-card-img img {
            transform: scale(1.05);
        }
        .list-card .list-card-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }
        .badge-tag {
            display: inline-flex;
            align-items: center;
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 8px;
            align-self: flex-start;
            letter-spacing: .03em;
        }
        .badge-tag.accent {
            background: var(--clr-accent);
            color: #fff;
        }
        .list-card h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--clr-text);
            margin-bottom: 6px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            transition: color .2s;
        }
        .list-card h3 a {
            color: inherit;
        }
        .list-card h3 a:hover {
            color: var(--clr-primary);
        }
        .list-card .list-card-desc {
            font-size: 14px;
            color: var(--clr-muted);
            line-height: 1.7;
            margin-bottom: 10px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            flex: 1;
        }
        .list-card .list-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--clr-muted);
            border-top: 1px dashed var(--clr-border);
            padding-top: 10px;
        }
        .list-card .list-card-meta i {
            margin-right: 4px;
            color: var(--clr-primary);
        }
        .list-card .read-more {
            font-weight: 600;
            font-size: 13px;
            color: var(--clr-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color .2s, gap .2s;
        }
        .list-card .read-more:hover {
            color: var(--clr-primary-dark);
            gap: 7px;
        }

        /* ===== Featured Cards ===== */
        .featured-card {
            background: var(--clr-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            height: 100%;
            transition: box-shadow .25s, transform .25s;
            position: relative;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .featured-card .fd-img {
            position: relative;
            height: 220px;
            overflow: hidden;
            background: var(--clr-primary-light);
        }
        .featured-card .fd-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .45s;
        }
        .featured-card:hover .fd-img img {
            transform: scale(1.06);
        }
        .featured-card .fd-img .badge-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--clr-accent);
            color: #fff;
            border-radius: var(--radius-pill);
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
            z-index: 2;
        }
        .featured-card .fd-body {
            padding: 22px 22px 20px;
        }
        .featured-card .fd-body h3 {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--clr-text);
        }
        .featured-card .fd-body h3 a {
            color: inherit;
        }
        .featured-card .fd-body h3 a:hover {
            color: var(--clr-primary);
        }
        .featured-card .fd-body p {
            font-size: 14px;
            color: var(--clr-muted);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .featured-card .fd-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--clr-muted);
            border-top: 1px solid var(--clr-border);
            padding-top: 14px;
        }
        .featured-card .fd-meta i {
            color: var(--clr-primary);
            margin-right: 4px;
        }

        /* ===== Steps ===== */
        .steps-section {
            background: var(--clr-primary-light);
            padding: 88px 0;
            position: relative;
            overflow: hidden;
        }
        .steps-section::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(71, 134, 195, 0.08);
        }
        .step-item {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-md);
            background: var(--clr-surface);
            box-shadow: var(--shadow-soft);
            height: 100%;
            position: relative;
            transition: box-shadow .25s, transform .25s;
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-item .step-num {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--clr-primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 6px 16px rgba(71, 134, 195, 0.28);
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--clr-text);
        }
        .step-item p {
            font-size: 14px;
            color: var(--clr-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-accordion .accordion-item {
            border: none;
            background: var(--clr-surface);
            border-radius: var(--radius-md) !important;
            box-shadow: var(--shadow-soft);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .25s;
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-hover);
        }
        .faq-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }
        .faq-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            padding: 18px 22px;
            background: var(--clr-surface);
            border: none;
            box-shadow: none;
            transition: background .2s, color .2s;
            font-family: var(--font-base);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--clr-primary-light);
            color: var(--clr-primary-dark);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border-color: transparent;
        }
        .faq-accordion .accordion-button::after {
            background-image: none;
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--clr-primary);
            width: auto;
            height: auto;
            transform: none;
            transition: transform .3s;
        }
        .faq-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--clr-primary-dark);
        }
        .faq-accordion .accordion-body {
            padding: 0 22px 20px;
            font-size: 14px;
            color: var(--clr-muted);
            line-height: 1.75;
            background: var(--clr-surface);
            border-top: 1px dashed var(--clr-border);
            padding-top: 14px;
        }

        /* ===== Small Cards ===== */
        .rn-card {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            height: 100%;
            transition: box-shadow .25s, transform .25s, border-color .25s;
            border: 1px solid transparent;
        }
        .rn-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--clr-primary-light);
        }
        .rn-card .rn-img {
            height: 120px;
            overflow: hidden;
            background: var(--clr-primary-light);
        }
        .rn-card .rn-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        .rn-card:hover .rn-img img {
            transform: scale(1.07);
        }
        .rn-card .rn-body {
            padding: 14px 16px 16px;
        }
        .rn-card .rn-body .rn-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--clr-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 6px;
            transition: color .2s;
        }
        .rn-card .rn-body .rn-title a {
            color: inherit;
        }
        .rn-card .rn-body .rn-title a:hover {
            color: var(--clr-primary);
        }
        .rn-card .rn-body .rn-cat {
            font-size: 12px;
            color: var(--clr-primary-dark);
            background: var(--clr-primary-light);
            padding: 2px 10px;
            border-radius: var(--radius-pill);
            display: inline-block;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--clr-primary-light);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(71, 134, 195, 0.08);
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 12px;
            letter-spacing: .02em;
        }
        .cta-section p {
            color: var(--clr-muted);
            font-size: 15px;
            margin-bottom: 28px;
        }
        .cta-actions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .back-top-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--clr-muted);
            font-size: 14px;
            margin-top: 24px;
            transition: color .2s;
        }
        .back-top-link:hover {
            color: var(--clr-primary);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--clr-footer-bg);
            color: var(--clr-footer-text);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }
        .footer-brand .brand-icon {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--clr-footer-text);
            max-width: 320px;
            margin-bottom: 0;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            color: var(--clr-footer-text);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: color .2s, padding-left .2s;
        }
        .footer-links a i {
            font-size: 12px;
            color: var(--clr-primary);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(199, 213, 227, 0.7);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199.98px) {
            .list-card {
                gap: 14px;
            }
        }
        @media (max-width: 991.98px) {
            .section-pad {
                padding: 64px 0;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                padding-top: 10px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                justify-content: flex-start;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-panel {
                align-items: center;
            }
            .category-hero {
                padding: 64px 0 56px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 767.98px) {
            .list-card {
                flex-direction: column;
            }
            .list-card .list-card-img {
                width: 100%;
                height: 160px;
            }
            .featured-card .fd-img {
                height: 160px;
            }
            .highlight-card {
                padding: 24px 18px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .section-head h2 {
                font-size: 21px;
            }
            .steps-section {
                padding: 56px 0;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-hero {
                border-radius: 0 0 18px 18px;
            }
            .category-hero .lead {
                font-size: 15px;
            }
        }
        @media (max-width: 520px) {
            .brand-text {
                font-size: 17px;
            }
            .nav-panel {
                padding: 12px 14px;
                gap: 10px;
            }
            .btn-sm {
                padding: 9px 14px;
                font-size: 13px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero .hero-actions .btn-main,
            .category-hero .hero-actions .btn-ghost {
                padding: 10px 18px;
                font-size: 14px;
            }
            .list-card .list-card-img {
                height: 140px;
            }
            .featured-card .fd-body {
                padding: 18px 16px 16px;
            }
            .featured-card .fd-body h3 {
                font-size: 17px;
            }
            .cta-section h2 {
                font-size: 23px;
            }
            .cta-actions .btn-accent,
            .cta-actions .btn-ghost {
                padding: 10px 18px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
            --clr-primary: #4786C3;
            --clr-primary-dark: #2E6398;
            --clr-primary-light: #E3EFF9;
            --clr-accent: #E07A3F;
            --clr-bg: #F5F7FA;
            --clr-surface: #FFFFFF;
            --clr-text: #25333F;
            --clr-muted: #6B7A88;
            --clr-border: #E3E9EF;
            --clr-footer-bg: #1E3A5F;
            --clr-footer-text: #C7D5E3;
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 20px;
            --shadow-soft: 0 4px 20px rgba(30, 58, 95, 0.06);
            --shadow-hover: 0 10px 32px rgba(30, 58, 95, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            background: var(--clr-bg);
            color: var(--clr-text);
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--clr-primary);
            text-decoration: none;
            transition: color .25s ease;
        }
        a:hover {
            color: var(--clr-primary-dark);
        }

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

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

        .container {
            max-width: 1200px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border-radius: 8px;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            transition: all .25s ease;
            border: 2px solid transparent;
        }
        .btn:focus,
        .btn:focus-visible {
            outline: 3px solid rgba(71, 134, 195, 0.3);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--clr-primary);
            border-color: var(--clr-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--clr-primary-dark);
            border-color: var(--clr-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(71, 134, 195, 0.3);
        }
        .btn-outline {
            background: #fff;
            border-color: var(--clr-primary);
            color: var(--clr-primary);
        }
        .btn-outline:hover {
            background: var(--clr-primary-light);
            color: var(--clr-primary);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--clr-accent);
            border-color: var(--clr-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: #C96A31;
            border-color: #C96A31;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(224, 122, 63, 0.3);
        }
        .btn-sm {
            padding: 7px 18px;
            font-size: 13px;
            border-radius: 8px;
        }

        .site-header {
            position: relative;
            z-index: 100;
            padding-top: 16px;
        }

        .nav-panel {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 12px 20px;
            flex-wrap: wrap;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: var(--clr-text);
            font-weight: 700;
            font-size: 19px;
            line-height: 1.2;
            text-decoration: none;
        }
        .brand:hover {
            color: var(--clr-text);
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            flex-shrink: 0;
            background: var(--clr-primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            font-size: 17px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 10px;
            background: var(--clr-primary-light);
            color: var(--clr-text);
            font-size: 14px;
            font-weight: 600;
            border: 2px solid transparent;
            transition: all .25s ease;
        }
        .nav-link:hover {
            background: var(--clr-primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-link.active {
            background: var(--clr-primary);
            color: #fff;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .nav-toggle {
            display: none;
            width: 38px;
            height: 38px;
            background: var(--clr-primary-light);
            border-radius: 8px;
            color: var(--clr-primary);
            font-size: 16px;
            transition: background .25s ease, color .25s ease;
        }
        .nav-toggle:hover {
            background: var(--clr-primary);
            color: #fff;
        }

        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid var(--clr-border);
            padding: 14px 0;
            margin-top: 24px;
        }
        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 14px;
        }
        .breadcrumb-wrap .breadcrumb a {
            color: var(--clr-muted);
        }
        .breadcrumb-wrap .breadcrumb a:hover {
            color: var(--clr-primary);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--clr-text);
            max-width: 320px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-section {
            padding: 60px 0 40px;
        }

        .article-card {
            background: var(--clr-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-soft);
            padding: 48px 56px;
            max-width: 880px;
            margin: 0 auto;
        }

        .article-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--clr-text);
            margin: 0 0 18px;
            letter-spacing: 0.02em;
            word-break: break-word;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px 22px;
            color: var(--clr-muted);
            font-size: 13px;
            padding-bottom: 18px;
            margin-bottom: 28px;
            border-bottom: 1px solid var(--clr-border);
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
        }
        .article-meta i {
            margin-right: 6px;
            color: var(--clr-primary);
            font-size: 14px;
        }

        .article-content {
            font-size: 16px;
            line-height: 1.85;
            color: #3A4854;
            word-break: break-word;
        }
        .article-content p {
            margin: 0 0 24px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            color: var(--clr-text);
            margin: 36px 0 16px;
            letter-spacing: 0.02em;
        }
        .article-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--clr-text);
            margin: 28px 0 12px;
        }
        .article-content blockquote {
            border-left: 4px solid var(--clr-primary);
            background: var(--clr-primary-light);
            padding: 18px 22px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--clr-muted);
            font-size: 15px;
        }
        .article-content img {
            max-width: 100%;
            border-radius: 12px;
            margin: 24px 0;
            box-shadow: var(--shadow-soft);
        }
        .article-content ul,
        .article-content ol {
            margin-bottom: 24px;
            padding-left: 1.4em;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-content a {
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
        }
        .article-content table th,
        .article-content table td {
            border: 1px solid var(--clr-border);
            padding: 10px 14px;
            font-size: 14px;
        }
        .article-content table th {
            background: var(--clr-primary-light);
            font-weight: 600;
        }

        .article-cta {
            padding: 40px 0;
        }

        .cta-panel {
            background: var(--clr-primary-light);
            border-radius: var(--radius-lg);
            padding: 52px 40px;
            text-align: center;
        }
        .cta-panel h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .cta-panel p {
            color: var(--clr-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .share-btn {
            width: 42px;
            height: 42px;
            background: #fff;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--clr-muted);
            font-size: 16px;
            border: 1px solid var(--clr-border);
            transition: all .25s ease;
        }
        .share-btn:hover {
            background: var(--clr-primary);
            color: #fff;
            border-color: var(--clr-primary);
            transform: translateY(-2px);
        }

        .back-top-link {
            display: inline-block;
            margin-top: 20px;
            color: var(--clr-muted);
            font-size: 13px;
            transition: color .25s ease;
        }
        .back-top-link:hover {
            color: var(--clr-primary);
        }

        .post-nav-section {
            padding: 0 0 40px;
        }
        .post-nav-card {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-soft);
            padding: 20px 22px;
            display: block;
            text-decoration: none;
            height: 100%;
            transition: all .25s ease;
        }
        .post-nav-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            text-decoration: none;
        }
        .post-nav-label {
            display: block;
            font-size: 13px;
            color: var(--clr-muted);
            margin-bottom: 6px;
        }
        .post-nav-title {
            display: block;
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .post-nav-card:hover .post-nav-title {
            color: var(--clr-primary);
        }
        .text-end .post-nav-title {
            text-align: right;
        }

        .related-section {
            padding: 40px 0 60px;
        }

        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 28px;
            padding-left: 14px;
            position: relative;
            letter-spacing: 0.02em;
        }
        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 4px;
            background: var(--clr-primary);
        }

        .related-card {
            background: var(--clr-surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-soft);
            display: block;
            text-decoration: none;
            height: 100%;
            transition: all .25s ease;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            text-decoration: none;
        }
        .related-card img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            display: block;
        }
        .related-body {
            padding: 14px 18px 18px;
        }
        .tag {
            display: inline-block;
            background: var(--clr-primary-light);
            color: var(--clr-primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .related-body h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--clr-text);
            margin: 0;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card:hover .related-body h3 {
            color: var(--clr-primary);
        }

        .empty-section {
            min-height: 60vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 60px 0;
            text-align: center;
        }
        .empty-section h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--clr-text);
            margin-bottom: 16px;
        }
        .empty-section p {
            color: var(--clr-muted);
            font-size: 16px;
        }

        .site-footer {
            background: var(--clr-footer-bg);
            color: var(--clr-footer-text);
            padding: 56px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 36px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .footer-brand .brand-icon {
            background: var(--clr-primary);
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--clr-footer-text);
            max-width: 340px;
            margin: 0;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--clr-footer-text);
            font-size: 14px;
            text-decoration: none;
            transition: color .25s ease;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-links a i {
            margin-right: 6px;
            font-size: 12px;
            color: var(--clr-primary);
            vertical-align: middle;
        }

        .footer-bottom {
            border-top: 1px solid rgba(199, 213, 227, 0.15);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: var(--clr-footer-text);
        }
        .footer-bottom p {
            margin: 0;
        }

        @media (max-width: 991px) {
            .nav-panel {
                position: relative;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0 4px;
                border-top: 1px solid var(--clr-border);
                margin-top: 8px;
            }
            .nav-links.open {
                display: flex;
                animation: fadeSlideIn .25s ease;
            }
            .nav-link {
                justify-content: flex-start;
                padding: 10px 16px;
            }
            .nav-toggle {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @keyframes fadeSlideIn {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (max-width: 767px) {
            .article-section {
                padding: 32px 0 28px;
            }
            .article-card {
                padding: 28px 22px;
                border-radius: 12px;
            }
            .article-title {
                font-size: 24px;
                line-height: 1.4;
            }
            .article-meta {
                gap: 10px 14px;
                font-size: 12px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }
            .cta-panel {
                padding: 36px 20px;
            }
            .cta-panel h2 {
                font-size: 22px;
            }
            .cta-actions {
                gap: 10px;
            }
            .related-body h3 {
                font-size: 15px;
            }
            .related-card img {
                height: 120px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .brand-text {
                font-size: 17px;
            }
            .breadcrumb-wrap .breadcrumb-item.active {
                max-width: 200px;
            }
        }

        @media (max-width: 520px) {
            .nav-panel {
                padding: 10px 14px;
            }
            .brand-text {
                font-size: 15px;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 15px;
            }
            .btn-primary.btn-sm {
                padding: 6px 12px;
                font-size: 12px;
            }
            .nav-toggle {
                width: 34px;
                height: 34px;
                font-size: 14px;
            }
            .article-card {
                padding: 22px 16px;
            }
            .article-meta {
                flex-direction: column;
                gap: 6px;
            }
            .post-nav-card {
                padding: 16px;
            }
            .post-nav-title {
                font-size: 14px;
            }
        }