/* roulang page: index */
:root {
  --primary: #0a1628;
  --primary-light: #132238;
  --primary-mid: #1e3a5f;
  --accent: #d4a843;
  --accent-hover: #e0b850;
  --accent-light: rgba(212, 168, 67, 0.12);
  --text-white: #ffffff;
  --text-light: #e8edf2;
  --text-muted: #9aabc0;
  --text-dark: #0a1628;
  --border-glow: rgba(212, 168, 67, 0.25);
  --shadow-heavy: 0 20px 60px rgba(0,0,0,0.6);
  --shadow-card: 0 12px 40px rgba(0,0,0,0.5);
  --shadow-soft: 0 8px 24px rgba(0,0,0,0.3);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --transition: all 0.35s cubic-bezier(0.25,0.46,0.45,0.94);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--primary); color: var(--text-light); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--accent-hover); outline: none; }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
button { cursor: pointer; font-family: inherit; border: none; background: none; color: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 100px 0; }
.section-pad-sm { padding: 60px 0; }
.section-title { font-size: 2.6rem; font-weight: 700; color: var(--text-white); text-align: center; margin-bottom: 16px; letter-spacing: -0.01em; line-height: 1.2; }
.section-sub { font-size: 1.1rem; color: var(--text-muted); text-align: center; max-width: 680px; margin: 0 auto 56px; line-height: 1.8; }
.text-accent { color: var(--accent); }
.bg-dark { background: var(--primary); }
.bg-card { background: var(--primary-light); }
/* navigation */
header { position: fixed; top: 0; left: 0; width: 100%; z-index: 1000; background: rgba(10,22,40,0.92); backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid rgba(212,168,67,0.12); transition: var(--transition); }
header.scrolled { background: rgba(10,22,40,0.98); box-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.nav-wrap { display: flex; align-items: center; justify-content: center; height: 76px; position: relative; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 8px; }
.nav-left { margin-right: auto; }
.nav-right { margin-left: auto; }
.nav-link { display: inline-flex; align-items: center; gap: 6px; padding: 8px 20px; font-size: 0.95rem; font-weight: 500; color: var(--text-muted); border-radius: 8px; transition: var(--transition); position: relative; white-space: nowrap; }
.nav-link i { font-size: 0.9rem; opacity: 0.7; }
.nav-link:hover, .nav-link:focus { color: var(--text-white); background: rgba(212,168,67,0.08); }
.nav-link.active { color: var(--accent); background: rgba(212,168,67,0.1); }
.nav-link.active::after { content: ''; position: absolute; bottom: -2px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--accent); border-radius: 2px; }
.nav-logo { position: absolute; left: 50%; transform: translateX(-50%); display: flex; align-items: center; }
.nav-logo a { font-size: 1.35rem; font-weight: 800; color: var(--text-white); letter-spacing: 0.02em; padding: 6px 18px; border: 2px solid rgba(212,168,67,0.3); border-radius: 10px; transition: var(--transition); background: rgba(10,22,40,0.6); white-space: nowrap; }
.nav-logo a:hover { border-color: var(--accent); background: rgba(212,168,67,0.06); color: var(--accent); }
.menu-toggle { display: none; font-size: 1.6rem; color: var(--text-white); padding: 8px 16px; background: rgba(255,255,255,0.05); border-radius: 8px; transition: var(--transition); border: 1px solid rgba(255,255,255,0.08); }
.menu-toggle:hover { background: rgba(212,168,67,0.12); color: var(--accent); }
/* mobile nav */
@media (max-width: 820px) {
  .nav-left, .nav-right { display: none; }
  .nav-wrap { justify-content: space-between; }
  .nav-logo { position: static; transform: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; }
  .mobile-open .nav-left, .mobile-open .nav-right { display: flex; flex-direction: column; align-items: stretch; width: 100%; gap: 4px; padding: 12px 0 20px; }
  .mobile-open .nav-wrap { flex-wrap: wrap; height: auto; padding: 12px 0; }
  .mobile-open .nav-logo { margin: 0 auto; }
  .mobile-open .nav-link { padding: 12px 20px; font-size: 1rem; justify-content: center; }
}
/* hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 140px 0 100px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat; z-index: 0; }
.hero-bg::after { content: ''; position: absolute; inset: 0; background: linear-gradient(145deg, rgba(10,22,40,0.88) 0%, rgba(10,22,40,0.72) 50%, rgba(10,22,40,0.90) 100%); z-index: 1; }
.hero-overlay-shape { position: absolute; bottom: 0; left: 0; width: 100%; height: 280px; background: linear-gradient(to top, var(--primary) 0%, transparent 100%); z-index: 1; pointer-events: none; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 880px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 24px; background: var(--accent-light); border: 1px solid rgba(212,168,67,0.25); border-radius: 40px; font-size: 0.85rem; color: var(--accent); font-weight: 500; margin-bottom: 24px; letter-spacing: 0.02em; }
.hero-badge i { font-size: 0.75rem; }
.hero h1 { font-size: 3.6rem; font-weight: 800; color: var(--text-white); line-height: 1.2; margin-bottom: 20px; letter-spacing: -0.015em; text-shadow: 0 4px 30px rgba(0,0,0,0.5); }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 1.2rem; color: var(--text-muted); max-width: 640px; margin: 0 auto 40px; line-height: 1.8; }
.hero-btns { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 36px; font-size: 1rem; font-weight: 600; border-radius: 50px; transition: var(--transition); border: none; font-family: inherit; letter-spacing: 0.01em; white-space: nowrap; }
.btn-primary { background: var(--accent); color: var(--text-dark); box-shadow: 0 8px 30px rgba(212,168,67,0.3); }
.btn-primary:hover, .btn-primary:focus { background: var(--accent-hover); transform: translateY(-3px); box-shadow: 0 12px 40px rgba(212,168,67,0.45); color: var(--text-dark); }
.btn-outline { background: transparent; color: var(--text-white); border: 2px solid rgba(255,255,255,0.2); }
.btn-outline:hover, .btn-outline:focus { border-color: var(--accent); color: var(--accent); background: rgba(212,168,67,0.06); transform: translateY(-3px); }
.btn-sm { padding: 10px 24px; font-size: 0.9rem; }
/* stats */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: -60px; position: relative; z-index: 3; }
.stat-card { background: var(--primary-light); border: 1px solid rgba(212,168,67,0.1); border-radius: var(--radius-md); padding: 32px 20px; text-align: center; transition: var(--transition); box-shadow: var(--shadow-card); }
.stat-card:hover { transform: translateY(-6px); border-color: rgba(212,168,67,0.3); box-shadow: var(--shadow-heavy); }
.stat-number { font-size: 2.8rem; font-weight: 800; color: var(--accent); line-height: 1.1; margin-bottom: 6px; }
.stat-label { font-size: 0.95rem; color: var(--text-muted); font-weight: 400; }
/* business cards */
.biz-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.biz-card { background: var(--primary-light); border: 1px solid rgba(212,168,67,0.06); border-radius: var(--radius-lg); padding: 40px 30px; transition: var(--transition); box-shadow: var(--shadow-soft); position: relative; overflow: hidden; }
.biz-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: 0; transition: var(--transition); }
.biz-card:hover { transform: translateY(-8px); border-color: rgba(212,168,67,0.15); box-shadow: var(--shadow-heavy); }
.biz-card:hover::before { opacity: 1; }
.biz-icon { width: 60px; height: 60px; background: var(--accent-light); border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; color: var(--accent); margin-bottom: 20px; }
.biz-card h3 { font-size: 1.3rem; font-weight: 700; color: var(--text-white); margin-bottom: 12px; }
.biz-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.7; }
.biz-card .biz-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 20px; font-weight: 600; font-size: 0.9rem; color: var(--accent); }
.biz-card .biz-link i { font-size: 0.8rem; transition: var(--transition); }
.biz-card .biz-link:hover i { transform: translateX(4px); }
/* posts list */
.posts-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.post-card { display: flex; flex-direction: column; background: var(--primary-light); border: 1px solid rgba(212,168,67,0.06); border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition); box-shadow: var(--shadow-soft); }
.post-card:hover { transform: translateY(-6px); border-color: rgba(212,168,67,0.15); box-shadow: var(--shadow-heavy); }
.post-img { width: 100%; height: 200px; object-fit: cover; }
.post-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.post-meta { display: flex; align-items: center; gap: 16px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 12px; }
.post-meta .cat { color: var(--accent); font-weight: 600; background: var(--accent-light); padding: 2px 12px; border-radius: 20px; }
.post-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px; line-height: 1.4; }
.post-body p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
.post-body .read-more { margin-top: 16px; font-weight: 600; font-size: 0.85rem; color: var(--accent); display: inline-flex; align-items: center; gap: 6px; }
.post-body .read-more i { font-size: 0.75rem; transition: var(--transition); }
.post-body .read-more:hover i { transform: translateX(4px); }
.empty-posts { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--text-muted); font-size: 1.05rem; background: var(--primary-light); border-radius: var(--radius-lg); border: 1px dashed rgba(212,168,67,0.15); }
/* features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feat-card { background: var(--primary-light); border: 1px solid rgba(212,168,67,0.06); border-radius: var(--radius-md); padding: 36px 28px; text-align: center; transition: var(--transition); box-shadow: var(--shadow-soft); }
.feat-card:hover { transform: translateY(-6px); border-color: rgba(212,168,67,0.12); box-shadow: var(--shadow-heavy); }
.feat-icon { width: 56px; height: 56px; background: var(--accent-light); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; color: var(--accent); margin: 0 auto 16px; }
.feat-card h3 { font-size: 1.15rem; font-weight: 700; color: var(--text-white); margin-bottom: 10px; }
.feat-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
/* faq */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { background: var(--primary-light); border: 1px solid rgba(212,168,67,0.06); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: rgba(212,168,67,0.12); }
.faq-q { padding: 20px 28px; display: flex; align-items: center; justify-content: space-between; font-size: 1.05rem; font-weight: 600; color: var(--text-white); cursor: pointer; transition: var(--transition); user-select: none; }
.faq-q i { font-size: 0.85rem; color: var(--accent); transition: var(--transition); }
.faq-item.active .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.3s ease; padding: 0 28px; }
.faq-item.active .faq-a { max-height: 300px; padding: 0 28px 20px; }
.faq-a p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.8; }
/* cta */
.cta-section { background: var(--primary-light); border-top: 1px solid rgba(212,168,67,0.06); border-bottom: 1px solid rgba(212,168,67,0.06); }
.cta-wrap { text-align: center; max-width: 700px; margin: 0 auto; }
.cta-wrap h2 { font-size: 2.2rem; font-weight: 700; color: var(--text-white); margin-bottom: 16px; }
.cta-wrap p { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
.cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
/* footer */
footer { background: var(--primary); border-top: 1px solid rgba(212,168,67,0.06); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .logo { font-size: 1.3rem; font-weight: 800; color: var(--text-white); margin-bottom: 16px; display: inline-block; border: 2px solid rgba(212,168,67,0.3); padding: 4px 16px; border-radius: 8px; }
.footer-brand p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.8; max-width: 340px; }
.footer-col h4 { font-size: 0.95rem; font-weight: 700; color: var(--text-white); margin-bottom: 20px; letter-spacing: 0.03em; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.9rem; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(212,168,67,0.06); padding: 24px 0; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); }
.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 0.82rem; color: var(--text-muted); transition: var(--transition); }
.footer-bottom-links a:hover { color: var(--accent); }
/* responsive */
@media (max-width: 1024px) {
  .hero h1 { font-size: 2.8rem; }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section-pad { padding: 60px 0; }
  .hero { min-height: 80vh; padding: 120px 0 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .section-title { font-size: 2rem; }
  .posts-grid { grid-template-columns: 1fr; }
  .biz-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card { padding: 24px 16px; }
  .stat-number { font-size: 2.2rem; }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-wrap h2 { font-size: 1.8rem; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.8rem; }
  .hero p { font-size: 0.9rem; }
  .section-title { font-size: 1.6rem; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
  .stat-number { font-size: 1.8rem; }
  .container { padding: 0 16px; }
  .cta-btns { flex-direction: column; align-items: center; }
}

/* roulang page: article */
:root {
            --primary: #1a2a4a;
            --primary-light: #2c4a7c;
            --primary-dark: #0f1a30;
            --accent: #c9a84c;
            --accent-light: #e0c06a;
            --accent-dark: #a8882e;
            --bg-dark: #0b1320;
            --bg-section: #f5f3ef;
            --bg-card: #ffffff;
            --bg-footer: #0f1a30;
            --text-dark: #1a1a2e;
            --text-body: #3d3d4a;
            --text-muted: #8a8a9a;
            --text-light: #f0eee8;
            --border-light: #e5e0d8;
            --border-card: #ddd8d0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 8px 28px rgba(0,0,0,0.10);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-serif: 'Georgia', 'Noto Serif SC', serif;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
        }

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

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-section);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }
        img { max-width: 100%; height: auto; display: block; }
        ul, ol { list-style: none; }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Navigation ===== */
        #header {
            background: var(--bg-dark);
            border-bottom: 2px solid var(--accent);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 0;
            box-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 20px;
            position: relative;
            min-height: 70px;
        }

        .nav-left, .nav-right {
            display: flex;
            align-items: center;
            gap: 6px;
            flex: 1;
        }

        .nav-right {
            justify-content: flex-end;
        }

        .nav-logo {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
        }

        .nav-logo a {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
            text-shadow: 0 2px 8px rgba(0,0,0,0.4);
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-logo a:hover {
            color: var(--accent-light);
            text-shadow: 0 0 20px rgba(201,168,76,0.3);
        }

        .nav-link {
            color: var(--text-light);
            font-size: 0.92rem;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
            letter-spacing: 0.3px;
            position: relative;
        }

        .nav-link i {
            margin-right: 6px;
            color: var(--accent);
            opacity: 0.8;
        }

        .nav-link:hover {
            background: rgba(201,168,76,0.12);
            color: var(--accent-light);
        }

        .nav-link.active {
            background: rgba(201,168,76,0.15);
            color: var(--accent);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .menu-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(201,168,76,0.3);
            color: var(--accent);
            font-size: 1.4rem;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(201,168,76,0.1);
            border-color: var(--accent);
        }

        /* ===== Article Hero ===== */
        .article-hero {
            background: linear-gradient(135deg, var(--bg-dark) 0%, var(--primary-dark) 50%, #0a1428 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            border-bottom: 3px solid var(--accent);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

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

        .article-hero h1 {
            font-family: var(--font-serif);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.35;
            margin-bottom: 18px;
            max-width: 900px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            align-items: center;
            color: rgba(240,238,232,0.7);
            font-size: 0.92rem;
        }

        .article-meta i {
            color: var(--accent);
            margin-right: 6px;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
        }

        .article-category {
            background: var(--accent);
            color: var(--bg-dark);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        /* ===== Article Content ===== */
        .article-main {
            padding: 60px 0 80px;
            background: var(--bg-section);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 48px 52px;
            border: 1px solid var(--border-card);
        }

        .article-body .content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-body);
        }

        .article-body .content p {
            margin-bottom: 1.6em;
        }

        .article-body .content h2 {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            color: var(--primary);
            margin: 2em 0 0.8em;
            border-left: 4px solid var(--accent);
            padding-left: 16px;
        }

        .article-body .content h3 {
            font-family: var(--font-serif);
            font-size: 1.25rem;
            color: var(--primary-light);
            margin: 1.6em 0 0.6em;
        }

        .article-body .content ul, .article-body .content ol {
            padding-left: 24px;
            margin-bottom: 1.4em;
        }

        .article-body .content li {
            margin-bottom: 0.5em;
            list-style: disc;
        }

        .article-body .content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(201,168,76,0.06);
            padding: 16px 24px;
            margin: 1.6em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-dark);
            font-style: italic;
        }

        .article-body .content img {
            border-radius: var(--radius-sm);
            margin: 1.6em auto;
            box-shadow: var(--shadow-sm);
        }

        .article-body .content a {
            color: var(--primary-light);
            border-bottom: 1px solid var(--accent);
        }

        .article-body .content a:hover {
            color: var(--accent-dark);
            border-color: var(--accent-dark);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
        }

        .article-not-found i {
            font-size: 3.6rem;
            color: var(--text-muted);
            margin-bottom: 20px;
            display: block;
        }

        .article-not-found h2 {
            font-family: var(--font-serif);
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-back {
            display: inline-block;
            background: var(--primary);
            color: var(--text-light);
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-back:hover {
            background: var(--accent);
            color: var(--bg-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        /* ===== Sidebar ===== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--border-card);
        }

        .sidebar-card h3 {
            font-family: var(--font-serif);
            font-size: 1.15rem;
            color: var(--primary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--accent);
        }

        .sidebar-card ul li {
            margin-bottom: 10px;
        }

        .sidebar-card ul li a {
            color: var(--text-body);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 0;
            transition: var(--transition);
        }

        .sidebar-card ul li a::before {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent);
            font-size: 0.8rem;
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-dark);
            padding-left: 4px;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: var(--text-light);
            border: none;
            text-align: center;
        }

        .sidebar-cta h3 {
            color: var(--accent);
            border-bottom-color: rgba(201,168,76,0.3);
        }

        .sidebar-cta p {
            color: rgba(240,238,232,0.8);
            font-size: 0.92rem;
            margin-bottom: 18px;
            line-height: 1.6;
        }

        .sidebar-cta .btn-cta {
            display: inline-block;
            background: var(--accent);
            color: var(--bg-dark);
            padding: 10px 28px;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .sidebar-cta .btn-cta:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201,168,76,0.3);
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            background: var(--bg-card);
            border-top: 1px solid var(--border-light);
        }

        .related-section .section-title {
            font-family: var(--font-serif);
            font-size: 1.8rem;
            color: var(--primary);
            text-align: center;
            margin-bottom: 40px;
        }

        .related-section .section-title i {
            color: var(--accent);
            margin-right: 10px;
        }

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

        .related-card {
            background: var(--bg-section);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-card);
            transition: var(--transition);
        }

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

        .related-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 20px 22px;
        }

        .related-card-body h4 {
            font-size: 1.05rem;
            color: var(--primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card-body h4 a {
            color: var(--primary);
        }

        .related-card-body h4 a:hover {
            color: var(--accent-dark);
        }

        .related-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-body .related-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .related-card-body .related-meta i {
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== Footer ===== */
        footer {
            background: var(--bg-footer);
            color: rgba(240,238,232,0.7);
            padding: 60px 0 0;
            border-top: 3px solid var(--accent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            font-family: var(--font-serif);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 14px;
            letter-spacing: 1px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(240,238,232,0.6);
            max-width: 360px;
        }

        .footer-col h4 {
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
        }

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

        .footer-col ul li a {
            color: rgba(240,238,232,0.6);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }

        .footer-col ul li a i {
            color: var(--accent);
            width: 18px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(201,168,76,0.15);
            padding: 24px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.88rem;
            color: rgba(240,238,232,0.5);
        }

        .footer-bottom a {
            color: rgba(240,238,232,0.5);
        }

        .footer-bottom a:hover {
            color: var(--accent-light);
        }

        .footer-bottom-links {
            display: flex;
            gap: 20px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                flex-wrap: wrap;
                padding: 10px 16px;
            }
            .nav-left, .nav-right {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 10px 0 6px;
            }
            .nav-left.show, .nav-right.show {
                display: flex;
            }
            .nav-right {
                justify-content: stretch;
            }
            .nav-logo {
                position: relative;
                left: auto;
                transform: none;
            }
            .nav-logo a {
                font-size: 1.3rem;
            }
            .menu-toggle {
                display: block;
            }
            .nav-link {
                padding: 10px 14px;
                font-size: 0.95rem;
            }
            .nav-link.active::after {
                display: none;
            }

            .article-hero {
                padding: 50px 0 40px;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.85rem;
            }

            .article-body {
                padding: 28px 20px;
            }
            .article-body .content {
                font-size: 0.98rem;
            }
            .article-body .content h2 {
                font-size: 1.3rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section .section-title {
                font-size: 1.4rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .article-hero h1 {
                font-size: 1.35rem;
            }
            .article-body {
                padding: 20px 16px;
            }
            .article-meta {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .sidebar-card {
                padding: 20px 16px;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --primary: #0a1a3a;
  --primary-light: #132a5e;
  --primary-dark: #060f24;
  --accent: #c9a84c;
  --accent-light: #e8c86a;
  --accent-dark: #a88a2e;
  --bg-body: #f4f6fb;
  --bg-white: #ffffff;
  --bg-dark: #0a1a3a;
  --bg-section-alt: #f0f2f8;
  --text-primary: #1a2332;
  --text-body: #3d4a5c;
  --text-muted: #7a8798;
  --text-light: #bcc4d0;
  --text-white: #ffffff;
  --border-color: #e2e6ed;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-sm: 0 2px 8px rgba(10,26,58,0.06);
  --shadow-md: 0 6px 24px rgba(10,26,58,0.10);
  --shadow-lg: 0 16px 48px rgba(10,26,58,0.14);
  --shadow-glow: 0 0 30px rgba(201,168,76,0.25);
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --transition: 0.30s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 3.5rem;
  --space-xl: 5rem;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); color: var(--text-body); background: var(--bg-body); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent-light); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; padding: 0; margin: 0; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.25; color: var(--text-primary); margin: 0 0 0.5rem 0; }
p { margin: 0 0 1rem 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; width: 100%; }
.section { padding: var(--space-xl) 0; }
.section-title { font-size: 2.2rem; text-align: center; margin-bottom: 0.5rem; color: var(--text-primary); }
.section-subtitle { font-size: 1.1rem; text-align: center; color: var(--text-muted); max-width: 640px; margin: 0 auto var(--space-lg) auto; }

/* ===== 导航 ===== */
#header {
  background: var(--bg-white);
  box-shadow: 0 2px 20px rgba(10,26,58,0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.96);
}
.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  position: relative;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex: 1;
}
.nav-right { justify-content: flex-end; }
.nav-logo {
  flex: 0 0 auto;
  padding: 0 1.5rem;
}
.nav-logo a {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
  white-space: nowrap;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-body);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}
.nav-link i { font-size: 0.9rem; color: var(--accent); }
.nav-link:hover { color: var(--primary); background: rgba(10,26,58,0.04); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 1rem;
  right: 1rem;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.menu-toggle { display: none; background: none; border: none; font-size: 1.4rem; color: var(--primary); cursor: pointer; padding: 0.5rem; }
@media (max-width: 1024px) {
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: block; position: absolute; right: 1.5rem; top: 50%; transform: translateY(-50%); }
  .nav-wrap { justify-content: center; }
  .nav-logo { padding: 0; }
  .nav-mobile-open .nav-left,
  .nav-mobile-open .nav-right {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-white);
    padding: 1rem 1.5rem 1.5rem;
    box-shadow: 0 12px 30px rgba(10,26,58,0.12);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 999;
    gap: 0.25rem;
  }
  .nav-mobile-open .nav-left { top: 72px; }
  .nav-mobile-open .nav-right { top: auto; position: static; margin-top: 0.25rem; }
  .nav-link { padding: 0.7rem 1rem; border-radius: var(--radius-sm); }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: rgba(201,168,76,0.10); }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--bg-dark);
  overflow: hidden;
  padding: var(--space-xl) 0;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.40;
  mix-blend-mode: overlay;
  transform: scale(1.02);
  transition: transform 12s ease;
}
.hero:hover .hero-bg { transform: scale(1.06); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(10,26,58,0.88) 0%, rgba(6,15,36,0.92) 100%);
  z-index: 1;
}
.hero-content { position: relative; z-index: 2; max-width: 860px; padding: 0 1.5rem; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,168,76,0.18);
  border: 1px solid rgba(201,168,76,0.30);
  color: var(--accent-light);
  padding: 0.4rem 1.2rem;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 1.2rem;
  letter-spacing: 1px;
  line-height: 1.15;
}
.hero h1 span { color: var(--accent-light); }
.hero p {
  font-size: 1.2rem;
  color: var(--text-light);
  max-width: 620px;
  margin: 0 auto 2rem auto;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.85rem 2rem;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  letter-spacing: 0.3px;
}
.btn-primary { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); color: var(--primary); box-shadow: 0 4px 20px rgba(201,168,76,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px rgba(201,168,76,0.45); color: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--text-white); border: 2px solid rgba(255,255,255,0.30); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-light); background: rgba(201,168,76,0.08); transform: translateY(-2px); }
@media (max-width: 768px) {
  .hero h1 { font-size: 2.4rem; }
  .hero p { font-size: 1rem; }
  .hero { min-height: 70vh; padding: var(--space-lg) 0; }
}

/* ===== 核心优势 ===== */
.advantages-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; }
.advantage-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.advantage-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.advantage-icon {
  width: 68px;
  height: 68px;
  margin: 0 auto 1.2rem;
  background: linear-gradient(135deg, rgba(201,168,76,0.12), rgba(10,26,58,0.04));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent);
  transition: var(--transition);
}
.advantage-card:hover .advantage-icon { background: var(--accent); color: var(--primary); transform: scale(1.05); }
.advantage-card h3 { font-size: 1.3rem; margin-bottom: 0.6rem; }
.advantage-card p { font-size: 0.95rem; color: var(--text-muted); margin-bottom: 0; }
@media (max-width: 768px) { .advantages-grid { grid-template-columns: 1fr; gap: 1.2rem; } }

/* ===== 服务矩阵 ===== */
.services-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 2rem; }
.service-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2.2rem 2rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.service-card-icon {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--accent);
  transition: var(--transition);
}
.service-card:hover .service-card-icon { background: var(--accent); color: var(--primary); }
.service-card-body h3 { font-size: 1.2rem; margin-bottom: 0.4rem; }
.service-card-body p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }
.service-tag {
  display: inline-block;
  padding: 0.2rem 0.8rem;
  background: rgba(201,168,76,0.12);
  color: var(--accent-dark);
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-top: 0.6rem;
}
@media (max-width: 768px) { .services-grid { grid-template-columns: 1fr; gap: 1.2rem; } .service-card { flex-direction: column; } }

/* ===== 适用场景 ===== */
.scenes-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 2rem; }
.scene-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.scene-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.scene-img {
  height: 200px;
  background: var(--primary-light);
  position: relative;
  overflow: hidden;
}
.scene-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.scene-card:hover .scene-img img { transform: scale(1.06); }
.scene-body { padding: 1.8rem 1.8rem 2rem; }
.scene-body h3 { font-size: 1.15rem; margin-bottom: 0.4rem; }
.scene-body p { font-size: 0.92rem; color: var(--text-muted); margin-bottom: 0; }
@media (max-width: 768px) { .scenes-grid { grid-template-columns: 1fr; gap: 1.2rem; } }
@media (min-width: 769px) and (max-width: 1024px) { .scenes-grid { grid-template-columns: repeat(2,1fr); } }

/* ===== 服务流程 ===== */
.process-steps { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; counter-reset: step; }
.process-step {
  flex: 1 1 200px;
  max-width: 240px;
  text-align: center;
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: block;
  width: 44px;
  height: 44px;
  line-height: 44px;
  margin: 0 auto 1rem;
  background: var(--primary);
  color: var(--accent);
  border-radius: 50%;
  font-size: 1.2rem;
  font-weight: 700;
}
.process-step h4 { font-size: 1.1rem; margin-bottom: 0.4rem; }
.process-step p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 0; }
.step-connector { display: none; }
@media (max-width: 768px) { .process-steps { flex-direction: column; align-items: center; } .process-step { max-width: 100%; width: 100%; } }
@media (min-width: 769px) and (max-width: 1024px) { .process-step { flex: 1 1 45%; max-width: 45%; } }

/* ===== 数据/案例 ===== */
.stats-banner {
  background: var(--bg-dark);
  padding: var(--space-lg) 0;
  position: relative;
  overflow: hidden;
}
.stats-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  opacity: 0.10;
  mix-blend-mode: overlay;
}
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 2rem; position: relative; z-index: 1; }
.stat-item { text-align: center; color: var(--text-white); }
.stat-number { font-size: 2.8rem; font-weight: 800; color: var(--accent-light); line-height: 1.2; margin-bottom: 0.3rem; }
.stat-label { font-size: 0.95rem; color: var(--text-light); opacity: 0.85; }
@media (max-width: 768px) { .stats-grid { grid-template-columns: repeat(2,1fr); gap: 1.5rem; } .stat-number { font-size: 2rem; } }

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-question {
  padding: 1.3rem 1.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.05rem;
  transition: var(--transition);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}
.faq-question i { color: var(--accent); transition: var(--transition); font-size: 1.1rem; }
.faq-item.active .faq-question i { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 1.8rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; padding: 0 1.8rem 1.3rem; }

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(145deg, var(--primary), var(--primary-dark));
  padding: var(--space-xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  opacity: 0.08;
}
.cta-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }
.cta-content h2 { font-size: 2.4rem; color: var(--text-white); margin-bottom: 0.8rem; }
.cta-content p { font-size: 1.1rem; color: var(--text-light); margin-bottom: 2rem; }
.cta-content .btn-primary { font-size: 1.1rem; padding: 1rem 2.8rem; }

/* ===== 页脚 ===== */
footer {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: var(--space-lg) 0 0;
  position: relative;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; margin-bottom: 2rem; }
.footer-brand .logo { font-size: 1.5rem; font-weight: 800; color: var(--text-white); margin-bottom: 0.8rem; background: linear-gradient(135deg, #fff, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; color: var(--text-muted); }
.footer-col h4 { font-size: 1rem; color: var(--text-white); margin-bottom: 1rem; font-weight: 600; }
.footer-col ul li { margin-bottom: 0.5rem; }
.footer-col ul li a { color: var(--text-muted); font-size: 0.88rem; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 1.5rem 0; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.8rem; font-size: 0.85rem; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }
.footer-bottom-links { display: flex; gap: 1.5rem; }
@media (max-width: 768px) { .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; } .footer-bottom { flex-direction: column; text-align: center; } }

/* ===== 通用辅助 ===== */
.text-accent { color: var(--accent); }
.bg-alt { background: var(--bg-section-alt); }
.mb-0 { margin-bottom: 0 !important; }
@media (max-width: 520px) {
  .section-title { font-size: 1.6rem; }
  .section-subtitle { font-size: 0.95rem; }
  .container { padding: 0 1rem; }
  .btn { padding: 0.7rem 1.5rem; font-size: 0.9rem; }
}