/* roulang page: index */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --primary-light: #ff6b6b;
  --accent: #1d3557;
  --accent-light: #457b9d;
  --bg: #ffffff;
  --bg-alt: #f8f9fa;
  --bg-dark: #0f1b2d;
  --text: #1a1a2e;
  --text-weak: #6c757d;
  --border: #e9ecef;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(0,0,0,0.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
  --space: 80px;
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.header {
  position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,0.96);
  backdrop-filter: blur(12px); border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--text); }
.logo-icon { width: 38px; height: 38px; border-radius: 10px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 16px; flex-shrink: 0; }
.logo span { white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 32px; margin-left: 40px; }
.nav-links a { font-size: 15px; font-weight: 500; color: var(--text); padding: 8px 4px; position: relative; transition: color 0.2s; }
.nav-links a::after { content: ""; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--primary); transition: width 0.25s; border-radius: 2px; }
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); }
.nav-links a.active::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.search-box { position: relative; }
.search-box input { width: 180px; height: 38px; border: 1px solid var(--border); border-radius: 20px; padding: 0 38px 0 16px; font-size: 13px; background: var(--bg-alt); transition: all 0.25s; outline: none; }
.search-box input:focus { width: 230px; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(230,57,70,0.12); }
.search-box i { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); color: var(--text-weak); font-size: 13px; pointer-events: none; }
.nav-cta { display: inline-flex; align-items: center; gap: 8px; background: var(--primary); color: #fff; border: none; padding: 0 22px; height: 38px; border-radius: 20px; font-size: 14px; font-weight: 600; transition: all 0.25s; }
.nav-cta:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(230,57,70,0.35); }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--text); }

/* ===== Mobile Menu ===== */
.mobile-menu { display: none; position: fixed; top: 72px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 24px 20px; box-shadow: var(--shadow); z-index: 999; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 12px 0; font-size: 15px; font-weight: 500; border-bottom: 1px solid var(--border); color: var(--text); }
.mobile-menu a:hover { color: var(--primary); }
.mobile-menu a.active { color: var(--primary); }
.mobile-menu .nav-cta { margin-top: 12px; width: 100%; justify-content: center; display: inline-flex; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 640px; display: flex; align-items: center; background: linear-gradient(135deg, var(--bg-dark) 0%, var(--accent) 100%); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; opacity: 0.35; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(15,27,45,0.95) 0%, rgba(15,27,45,0.75) 50%, rgba(29,53,87,0.4) 100%); }
.hero-content { position: relative; z-index: 2; padding: 100px 0; max-width: 680px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(230,57,70,0.18); border: 1px solid rgba(230,57,70,0.4); color: #ffb3b8; padding: 6px 18px; border-radius: 24px; font-size: 13px; font-weight: 600; letter-spacing: 0.5px; margin-bottom: 24px; }
.hero-badge i { font-size: 11px; }
.hero h1 { font-size: 52px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 20px; letter-spacing: -0.5px; }
.hero h1 .highlight { color: var(--primary-light); position: relative; }
.hero p.lead { font-size: 17px; color: rgba(255,255,255,0.85); line-height: 1.8; margin-bottom: 36px; max-width: 560px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; border: none; border-radius: 12px; padding: 0 28px; height: 50px; font-size: 15px; font-weight: 600; transition: all 0.25s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(230,57,70,0.4); }
.btn-ghost { background: rgba(255,255,255,0.12); color: #fff; border: 1px solid rgba(255,255,255,0.25); backdrop-filter: blur(8px); }
.btn-ghost:hover { background: rgba(255,255,255,0.22); transform: translateY(-2px); border-color: rgba(255,255,255,0.5); }
.hero-stats { display: flex; gap: 48px; margin-top: 56px; padding-top: 36px; border-top: 1px solid rgba(255,255,255,0.15); }
.hero-stat { display: flex; flex-direction: column; }
.hero-stat .num { font-size: 32px; font-weight: 800; color: #fff; }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,0.65); margin-top: 4px; }

/* ===== Section common ===== */
.section { padding: var(--space) 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-tag { display: inline-block; background: rgba(230,57,70,0.08); color: var(--primary); font-size: 13px; font-weight: 600; padding: 5px 16px; border-radius: 20px; margin-bottom: 12px; }
.section-header h2 { font-size: 34px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 12px; }
.section-header h2 .accent-text { color: var(--primary); }
.section-header p { font-size: 16px; color: var(--text-weak); line-height: 1.6; }

/* ===== Features ===== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; text-align: center; transition: all 0.3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.feature-icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin: 0 auto 20px; position: relative; }
.feature-icon .fa-solid { position: relative; z-index: 1; }
.feature-icon::after { content: ""; position: absolute; width: 100%; height: 100%; border-radius: 16px; opacity: 0.12; }
.feature-icon.red::after { background: var(--primary); }
.feature-icon.blue::after { background: var(--accent); }
.feature-icon.green::after { background: #2d6a4f; }
.feature-icon.orange::after { background: #e76f51; }
.feature-icon.red i, .feature-icon.red i { color: var(--primary); }
.feature-icon.blue i { color: var(--accent); }
.feature-icon.green i { color: #2d6a4f; }
.feature-icon.orange i { color: #e76f51; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.6; }

/* ===== Sports Categories ===== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s; background: #fff; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-cover { position: relative; height: 240px; background-size: cover; background-position: center; overflow: hidden; }
.category-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.category-card:hover .category-cover img { transform: scale(1.05); }
.category-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(15,27,45,0.85) 100%); }
.category-body { position: absolute; bottom: 0; left: 0; right: 0; padding: 22px 24px; z-index: 2; }
.category-body h3 { color: #fff; font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.category-body .match-count { color: rgba(255,255,255,0.7); font-size: 13px; }
.category-tag { position: absolute; top: 16px; left: 16px; background: rgba(230,57,70,0.9); color: #fff; font-size: 12px; font-weight: 600; padding: 4px 14px; border-radius: 16px; z-index: 3; }

/* ===== Latest List ===== */
.latest-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.latest-list { display: flex; flex-direction: column; gap: 14px; }
.latest-item { display: flex; gap: 16px; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; transition: all 0.25s; }
.latest-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); border-color: transparent; }
.latest-item-thumb { width: 112px; height: 84px; border-radius: 8px; object-fit: cover; flex-shrink: 0; }
.latest-item-body { flex: 1; min-width: 0; }
.latest-item-body .cat-badge { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 10px; border-radius: 12px; color: var(--primary); background: rgba(230,57,70,0.08); margin-bottom: 6px; }
.latest-item-body h3 { font-size: 16px; font-weight: 600; line-height: 1.4; margin-bottom: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.latest-item-body h3 a { color: var(--text); transition: color 0.2s; }
.latest-item-body h3 a:hover { color: var(--primary); }
.latest-meta { display: flex; gap: 16px; align-items: center; font-size: 12px; color: var(--text-weak); }
.latest-meta span { display: inline-flex; align-items: center; gap: 5px; }
.latest-empty { background: var(--bg-alt); border: 1px dashed var(--border); border-radius: var(--radius); padding: 40px; text-align: center; color: var(--text-weak); font-size: 14px; grid-column: 1 / -1; }
.latest-side { background: linear-gradient(135deg, var(--bg-dark) 0%, var(--accent) 100%); border-radius: var(--radius); padding: 32px; color: #fff; position: sticky; top: 100px; }
.latest-side h3 { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.latest-side p { font-size: 14px; color: rgba(255,255,255,0.8); line-height: 1.7; margin-bottom: 18px; }
.latest-side .side-list { margin-bottom: 20px; }
.latest-side .side-list li { display: flex; align-items: center; gap: 10px; font-size: 14px; padding: 8px 0; color: rgba(255,255,255,0.9); }
.latest-side .side-list li i { color: var(--primary-light); font-size: 12px; }
.btn-light { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--accent); border: none; border-radius: 10px; padding: 0 22px; height: 44px; font-size: 14px; font-weight: 700; transition: all 0.25s; }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,255,255,0.25); }

/* ===== Alert Section (match info strip) ===== */
.alert-strip { background: linear-gradient(90deg, var(--primary) 0%, var(--primary-dark) 100%); color: #fff; padding: 40px 0; }
.alert-strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.alert-strip-text { display: flex; align-items: center; gap: 18px; }
.alert-strip-text i { font-size: 32px; color: rgba(255,255,255,0.6); }
.alert-strip-text h3 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.alert-strip-text p { font-size: 14px; opacity: 0.85; }
.btn-white-outline { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: #fff; border: 1.5px solid #fff; border-radius: 12px; padding: 0 24px; height: 46px; font-size: 14px; font-weight: 600; transition: all 0.25s; }
.btn-white-outline:hover { background: #fff; color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.15); }

/* ===== Guides / Steps ===== */
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step-card { background: #fff; border-radius: var(--radius); padding: 36px 28px; border: 1px solid var(--border); position: relative; transition: all 0.3s; }
.step-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.step-num { position: absolute; top: 24px; right: 24px; font-size: 52px; font-weight: 800; color: rgba(230,57,70,0.08); line-height: 1; }
.step-icon { width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; margin-bottom: 20px; }
.step-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.step-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ===== Image Feature / Showcase ===== */
.showcase { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.showcase-info h2 { font-size: 32px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; color: var(--text); }
.showcase-info p { font-size: 15px; color: var(--text-weak); line-height: 1.8; margin-bottom: 20px; }
.check-list { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.check-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text); }
.check-list li i { color: var(--primary); margin-top: 4px; font-size: 14px; }
.showcase-media { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); }
.showcase-media img { width: 100%; height: 100%; object-fit: cover; }
.showcase-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 60%, rgba(15,27,45,0.5) 100%); }
.showcase-media-caption { position: absolute; bottom: 16px; left: 16px; color: #fff; font-size: 13px; background: rgba(0,0,0,0.55); padding: 4px 14px; border-radius: 16px; backdrop-filter: blur(6px); }

/* ===== Horizontal Scroll ===== */
.scroll-section { overflow: hidden; }
.scroll-track { display: flex; gap: 20px; overflow-x: auto; padding: 10px 0 20px; scrollbar-width: thin; scrollbar-color: var(--primary) var(--border); -webkit-overflow-scrolling: touch; }
.scroll-track::-webkit-scrollbar { height: 6px; }
.scroll-track::-webkit-scrollbar-track { background: var(--border); border-radius: 10px; }
.scroll-track::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }
.scroll-card { flex: 0 0 300px; background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: transform 0.3s; }
.scroll-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.scroll-card-img { height: 170px; background-size: cover; background-position: center; position: relative; }
.scroll-card-img .tag-live { position: absolute; top: 12px; left: 12px; background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 12px; }
.scroll-card-img .tag-time { position: absolute; bottom: 12px; right: 12px; background: rgba(0,0,0,0.7); color: #fff; font-size: 11px; padding: 3px 10px; border-radius: 10px; backdrop-filter: blur(4px); }
.scroll-card-body { padding: 18px 20px; }
.scroll-card-body h4 { font-size: 15px; font-weight: 700; margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.scroll-card-body .meta-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-weak); }

/* ===== Data Stats ===== */
.stats-banner { background: linear-gradient(135deg, var(--bg-dark), var(--accent)); padding: 60px 0; position: relative; overflow: hidden; }
.stats-banner .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-block { text-align: center; padding: 20px; }
.stat-block .value { font-size: 42px; font-weight: 800; color: #fff; line-height: 1.2; }
.stat-block .value .symbol { color: var(--primary-light); }
.stat-block .stat-label { font-size: 14px; color: rgba(255,255,255,0.7); margin-top: 6px; }

/* ===== FAQ ===== */
.faq-grid { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; transition: box-shadow 0.25s; }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item summary { list-style: none; cursor: pointer; padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--text); display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: color 0.2s; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary .fa { font-size: 14px; color: var(--primary); transition: transform 0.3s; }
.faq-item[open] summary .fa { transform: rotate(45deg); }
.faq-item .answer { padding: 0 24px 22px; font-size: 14px; color: var(--text-weak); line-height: 1.8; border-top: 1px solid var(--border); padding-top: 16px; margin-top: -4px; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; background: var(--bg-alt); }
.cta-box { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%); border-radius: 24px; padding: 60px 40px; text-align: center; color: #fff; position: relative; overflow: hidden; box-shadow: 0 20px 60px rgba(230,57,70,0.35); }
.cta-box::before { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; background: rgba(255,255,255,0.08); top: -150px; right: -80px; }
.cta-box::after { content: ""; position: absolute; width: 200px; height: 200px; border-radius: 50%; background: rgba(255,255,255,0.06); bottom: -80px; left: -50px; }
.cta-box h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-box p { font-size: 16px; opacity: 0.9; margin-bottom: 32px; text-align: center; position: relative; z-index: 1; }
.cta-actions { display: flex; gap: 16px; justify-content: center; position: relative; z-index: 1; flex-wrap: wrap; }
.btn-cta-light { background: #fff; color: var(--primary); border: none; border-radius: 12px; padding: 0 30px; height: 50px; font-size: 15px; font-weight: 700; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-cta-light:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(0,0,0,0.25); }
.btn-cta-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.6); border-radius: 12px; padding: 0 30px; height: 50px; font-size: 15px; font-weight: 700; display: inline-flex; align-items: center; gap: 8px; transition: all 0.25s; }
.btn-cta-outline:hover { background: rgba(255,255,255,0.12); transform: translateY(-2px); }

/* ===== Footer ===== */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.7); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.7; max-width: 320px; }
.footer h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); transition: color 0.2s; display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover { color: var(--primary-light); }
.footer-links a i { font-size: 11px; }
.footer-bottom { padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.4); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .latest-layout { grid-template-columns: 1fr; }
  .latest-side { position: static; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-banner .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 42px; }
}
@media (max-width: 768px) {
  :root { --space: 60px; }
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-right .search-box { display: none; }
  .nav-cta { display: none; }
  .hero { min-height: 500px; }
  .hero-content { padding: 60px 0; }
  .hero h1 { font-size: 32px; }
  .hero p.lead { font-size: 15px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
  .section-header h2 { font-size: 26px; }
  .alert-strip-inner { flex-direction: column; text-align: center; }
  .alert-strip-text { flex-direction: column; text-align: center; gap: 8px; }
  .category-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-banner .stats-grid { grid-template-columns: 2fr; gap: 10px; }
  .stat-block .value { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .cta-box { padding: 40px 20px; }
  .cta-box h2 { font-size: 24px; }
  .latest-item { flex-direction: row; }
  .latest-item-thumb { width: 80px; height: 64px; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 24px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section-header h2 { font-size: 23px; }
  .logo span { font-size: 17px; }
  .logo-icon { width: 34px; height: 34px; }
  .hero h1 { font-size: 27px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .category-cover { height: 180px; }
  .feature-card { padding: 24px 18px; }
  .page-content { padding-top: 20px !important; }
  .stats-banner .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* roulang page: category1 */
:root{
  --primary:#0f172a;
  --primary-light:#1e293b;
  --accent:#f59e0b;
  --accent-deep:#f97316;
  --accent-2:#06b6d4;
  --success:#10b981;
  --bg:#ffffff;
  --bg-light:#f1f5f9;
  --bg-dark:#0b1120;
  --text:#0f172a;
  --text-light:#475569;
  --muted:#94a3b8;
  --border:#e2e8f0;
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:26px;
  --shadow-sm:0 2px 10px rgba(15,23,42,.06);
  --shadow:0 14px 34px rgba(15,23,42,.1);
  --shadow-lg:0 28px 64px rgba(15,23,42,.16);
  --transition:.25s ease;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','Microsoft YaHei','Segoe UI',Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
button,input{font-family:inherit}
ul,ol,dl,dd{margin:0;padding:0;list-style:none}
::selection{background:rgba(245,158,11,.28)}
.container{max-width:var(--container);margin:0 auto;padding:0 24px;width:100%}
.section{padding:96px 0}
.section.tight{padding:72px 0}
.section-dark{
  background:var(--bg-dark);
  color:#fff;
}
.section-head{
  max-width:780px;
  margin:0 auto 50px;
  text-align:center;
}
.section-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 16px;
  border-radius:999px;
  background:rgba(245,158,11,.1);
  border:1px solid rgba(245,158,11,.25);
  color:var(--accent-deep);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:2px;
  text-transform:uppercase;
  margin-bottom:14px;
}
.section-dark .section-eyebrow{
  background:rgba(245,158,11,.15);
  border-color:rgba(245,158,11,.35);
  color:#fbbf24;
}
.section-title{
  font-size:clamp(1.9rem,3.4vw,2.7rem);
  font-weight:900;
  line-height:1.25;
  margin:0 0 16px;
  letter-spacing:-.02em;
}
.section-desc{
  color:var(--text-light);
  font-size:1.02rem;
  margin:0;
}
.section-dark .section-desc{color:#cbd5e1}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 28px;
  border-radius:999px;
  font-weight:700;
  font-size:.92rem;
  border:none;
  cursor:pointer;
  transition:all var(--transition);
  line-height:1.2;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-deep));
  color:#fff;
  box-shadow:0 10px 24px rgba(245,158,11,.32);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 16px 34px rgba(245,158,11,.4);
}
.btn-ghost{
  background:rgba(255,255,255,.1);
  color:#fff;
  border:1px solid rgba(255,255,255,.24);
  backdrop-filter:blur(6px);
}
.btn-ghost:hover{
  background:rgba(255,255,255,.18);
  border-color:rgba(255,255,255,.4);
  transform:translateY(-2px);
}
.btn-dark{
  background:var(--primary);
  color:#fff;
}
.btn-dark:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:.85rem}
.text-center{text-align:center}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  background:#fef3c7;
  color:#92400e;
  font-size:.75rem;
  font-weight:700;
}
.badge-blue{
  background:#e0f2fe;
  color:#0369a1;
}
.badge-green{
  background:#d1fae5;
  color:#065f46;
}
.badge-purple{
  background:#ede9fe;
  color:#5b21b6;
}
/* ===== Header ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  box-shadow:0 1px 0 rgba(15,23,42,.02);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:22px;
  height:72px;
}
.logo{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:1.12rem;
  font-weight:900;
  color:var(--primary);
  white-space:nowrap;
  letter-spacing:-.01em;
}
.logo-icon{
  width:40px;
  height:40px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:linear-gradient(135deg,#f59e0b,#f97316);
  color:#fff;
  font-size:1.1rem;
  box-shadow:0 8px 18px rgba(245,158,11,.35);
  flex-shrink:0;
}
.nav-links{
  display:flex;
  gap:6px;
  align-items:center;
}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 16px;
  border-radius:10px;
  font-weight:600;
  font-size:.92rem;
  color:var(--text-light);
  transition:all var(--transition);
}
.nav-links a:hover{
  color:var(--primary);
  background:var(--bg-light);
}
.nav-links a.active{
  color:var(--primary);
  background:#fef3c7;
  font-weight:700;
}
.nav-links a.active::after{
  content:'';
  position:absolute;
  left:50%;
  transform:translateX(-50%);
  bottom:3px;
  width:18px;
  height:3px;
  border-radius:3px;
  background:var(--accent);
}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
}
.search-box input{
  width:200px;
  height:40px;
  padding:0 16px 0 40px;
  border-radius:999px;
  border:1px solid var(--border);
  background:var(--bg-light);
  outline:none;
  font-size:.86rem;
  transition:all var(--transition);
}
.search-box input:focus{
  background:#fff;
  border-color:rgba(245,158,11,.5);
  box-shadow:0 0 0 4px rgba(245,158,11,.12);
}
.search-box i{
  position:absolute;
  left:14px;
  color:var(--muted);
  font-size:.9rem;
  pointer-events:none;
}
.nav-toggle{
  display:none;
  width:42px;
  height:42px;
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--bg);
  color:var(--text);
  font-size:1.05rem;
  cursor:pointer;
  align-items:center;
  justify-content:center;
  transition:all var(--transition);
}
.nav-toggle:hover{border-color:rgba(245,158,11,.5);color:var(--accent-deep)}
/* ===== Hero ===== */
.page-hero{
  position:relative;
  min-height:560px;
  display:flex;
  align-items:center;
  padding:120px 0 100px;
  background:linear-gradient(80deg,rgba(2,6,23,.9) 0%,rgba(2,6,23,.68) 45%,rgba(2,6,23,.42) 100%),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;
  overflow:hidden;
}
.page-hero::after{
  content:'';
  position:absolute;
  inset:auto 0 0 0;
  height:180px;
  background:linear-gradient(180deg,transparent,rgba(2,6,23,.6));
  pointer-events:none;
}
.hero-content{
  position:relative;
  z-index:2;
  max-width:780px;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 18px;
  border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.09);
  border-radius:999px;
  font-size:.8rem;
  letter-spacing:2px;
  font-weight:600;
  margin-bottom:26px;
  backdrop-filter:blur(8px);
}
.page-hero h1{
  font-size:clamp(2.3rem,5vw,3.8rem);
  font-weight:900;
  line-height:1.14;
  margin:0 0 22px;
  letter-spacing:-.03em;
  text-shadow:0 6px 28px rgba(0,0,0,.35);
}
.page-hero h1 span{
  color:var(--accent);
}
.hero-desc{
  font-size:1.08rem;
  color:#e2e8f0;
  max-width:620px;
  margin:0 0 34px;
  line-height:1.8;
}
.hero-btns{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-bottom:46px;
}
.hero-stats{
  display:flex;
  flex-wrap:wrap;
  gap:0;
  border-top:1px solid rgba(255,255,255,.16);
  padding-top:28px;
  max-width:640px;
}
.hero-stat{
  flex:1 1 160px;
  padding-right:22px;
}
.hero-stat strong{
  display:block;
  font-size:1.5rem;
  font-weight:900;
  color:#fbbf24;
  line-height:1.2;
}
.hero-stat span{
  font-size:.82rem;
  color:#94a3b8;
}
/* ===== Intro ===== */
.intro-wrap{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:60px;
  align-items:center;
}
.intro-copy h2{
  font-size:clamp(1.7rem,3vw,2.4rem);
  font-weight:900;
  line-height:1.3;
  margin:0 0 20px;
  letter-spacing:-.02em;
}
.intro-copy p{
  color:var(--text-light);
  margin:0 0 22px;
  font-size:1rem;
}
.intro-tags{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:26px;
}
.intro-visual{
  position:relative;
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}
.intro-visual img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:4/3;
  transition:transform .8s ease;
}
.intro-visual:hover img{
  transform:scale(1.04);
}
.intro-visual::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(200deg,transparent 60%,rgba(2,6,23,.55));
  pointer-events:none;
}
.visual-caption{
  position:absolute;
  left:22px;
  bottom:18px;
  z-index:2;
  color:#fff;
  font-weight:700;
  font-size:.95rem;
  background:rgba(2,6,23,.4);
  backdrop-filter:blur(8px);
  padding:8px 16px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.18);
}
/* ===== Guide cards ===== */
.guide-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
}
.guide-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.guide-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
  border-color:rgba(245,158,11,.3);
}
.guide-card-img{
  position:relative;
  overflow:hidden;
  aspect-ratio:5/3;
}
.guide-card-img img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .7s ease;
}
.guide-card:hover .guide-card-img img{
  transform:scale(1.06);
}
.guide-card-img .badge{
  position:absolute;
  left:14px;
  top:14px;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(8px);
  box-shadow:var(--shadow-sm);
}
.guide-card-body{
  padding:22px;
}
.guide-card-body h3{
  font-size:1.1rem;
  font-weight:800;
  margin:0 0 10px;
  letter-spacing:-.01em;
}
.guide-card-body p{
  font-size:.9rem;
  color:var(--text-light);
  margin:0 0 16px;
  line-height:1.7;
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:700;
  font-size:.84rem;
  color:var(--accent-deep);
}
.card-link i{
  transition:transform var(--transition);
}
.card-link:hover i{
  transform:translateX(4px);
}
/* ===== Steps ===== */
.steps-section{
  position:relative;
  background:linear-gradient(135deg,#0b1120 0%,#111c33 100%);
  overflow:hidden;
}
.steps-section::before{
  content:'';
  position:absolute;
  width:420px;
  height:420px;
  right:-120px;
  top:-120px;
  background:radial-gradient(circle,rgba(245,158,11,.22),transparent 68%);
  pointer-events:none;
}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
  position:relative;
  z-index:2;
}
.step-item{
  background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.1);
  border-radius:var(--radius-lg);
  padding:36px 30px;
  position:relative;
  transition:all var(--transition);
}
.step-item:hover{
  background:rgba(255,255,255,.07);
  border-color:rgba(245,158,11,.35);
  transform:translateY(-4px);
}
.step-num{
  width:54px;
  height:54px;
  border-radius:16px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1.15rem;
  font-weight:900;
  color:#fff;
  background:linear-gradient(135deg,#f59e0b,#f97316);
  box-shadow:0 10px 24px rgba(245,158,11,.3);
  margin-bottom:22px;
}
.step-item h3{
  color:#fff;
  font-size:1.12rem;
  font-weight:800;
  margin:0 0 10px;
}
.step-item p{
  color:#cbd5e1;
  font-size:.92rem;
  margin:0;
  line-height:1.8;
}
/* ===== Article list ===== */
.article-list{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.article-item{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:24px;
  box-shadow:var(--shadow-sm);
  transition:all var(--transition);
}
.article-item:hover{
  box-shadow:var(--shadow);
  transform:translateY(-3px);
}
.article-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  margin-bottom:12px;
}
.article-time{
  font-size:.78rem;
  color:var(--muted);
}
.article-item h3{
  font-size:1.06rem;
  font-weight:800;
  margin:0 0 8px;
  line-height:1.5;
}
.article-item p{
  font-size:.9rem;
  color:var(--text-light);
  margin:0 0 16px;
  line-height:1.7;
}
.article-link{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:.85rem;
  font-weight:700;
  color:var(--accent-deep);
}
.article-link i{
  transition:transform var(--transition);
}
.article-link:hover i{
  transform:translateX(4px);
}
/* ===== Stats ===== */
.stats-section{
  background:linear-gradient(90deg,rgba(2,6,23,.88),rgba(2,6,23,.82)),url('/assets/images/backpic/back-1.png') center/cover fixed no-repeat;
  color:#fff;
  text-align:center;
}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:30px;
  max-width:960px;
  margin:0 auto;
}
.stat-block{
  padding:30px 18px;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.1);
  transition:all var(--transition);
}
.stat-block:hover{
  background:rgba(255,255,255,.09);
  transform:translateY(-4px);
}
.stat-block i{
  font-size:1.4rem;
  color:#fbbf24;
  margin-bottom:12px;
}
.stat-block strong{
  display:block;
  font-size:2rem;
  font-weight:900;
  line-height:1.2;
  margin-bottom:4px;
}
.stat-block span{
  color:#cbd5e1;
  font-size:.86rem;
}
/* ===== FAQ ===== */
.faq-wrap{
  max-width:840px;
  margin:0 auto;
}
.faq-item{
  border:1px solid var(--border);
  border-radius:var(--radius);
  background:#fff;
  box-shadow:var(--shadow-sm);
  margin-bottom:16px;
  overflow:hidden;
  transition:all var(--transition);
}
.faq-item:hover{
  box-shadow:var(--shadow);
}
.faq-item summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  cursor:pointer;
  font-weight:700;
  font-size:.98rem;
  list-style:none;
  transition:color var(--transition);
}
.faq-item summary::-webkit-details-marker{
  display:none;
}
.faq-item summary i{
  color:var(--accent-deep);
  transition:transform var(--transition);
  flex-shrink:0;
}
.faq-item[open] summary{
  color:var(--accent-deep);
}
.faq-item[open] summary i{
  transform:rotate(180deg);
}
.faq-answer{
  padding:0 24px 22px;
  color:var(--text-light);
  font-size:.93rem;
  line-height:1.8;
}
/* ===== CTA ===== */
.cta-section{
  position:relative;
  background:linear-gradient(100deg,rgba(2,6,23,.9),rgba(15,23,42,.75)),url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#fff;
  text-align:center;
  overflow:hidden;
}
.cta-section .section-title{
  max-width:720px;
  margin-left:auto;
  margin-right:auto;
}
.cta-section .section-desc{
  max-width:560px;
  margin:0 auto 32px;
  color:#cbd5e1;
}
.cta-btns{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}
/* ===== Footer ===== */
.footer{
  background:#0b1120;
  color:#94a3b8;
  padding:70px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  gap:50px;
  padding-bottom:46px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .logo{
  color:#fff;
  margin-bottom:16px;
}
.footer-brand p{
  font-size:.9rem;
  line-height:1.8;
  margin:0;
  max-width:340px;
}
.footer h4{
  color:#fff;
  font-size:.98rem;
  font-weight:800;
  margin:0 0 18px;
}
.footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9rem;
  color:#94a3b8;
  transition:all var(--transition);
}
.footer-links a i{
  font-size:.7rem;
  color:rgba(255,255,255,.3);
  transition:color var(--transition);
}
.footer-links a:hover{
  color:#fbbf24;
  transform:translateX(3px);
}
.footer-links a:hover i{
  color:#fbbf24;
}
.footer-bottom{
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  align-items:center;
  padding:24px 0 28px;
  font-size:.82rem;
}
.footer-bottom p{
  margin:0;
}
.footer-bottom i{
  margin-right:4px;
}
/* ===== Responsive ===== */
@media (max-width:1024px){
  .container{gap:18px}
  .nav-links{gap:4px}
  .nav-links a{padding:0 11px}
  .search-box input{width:160px}
  .guide-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .section{padding:72px 0}
  .nav-links{
    display:none;
    position:absolute;
    top:72px;
    left:0;
    right:0;
    background:#fff;
    flex-direction:column;
    align-items:stretch;
    padding:14px 18px 20px;
    border-bottom:1px solid var(--border);
    box-shadow:var(--shadow);
    border-radius:0 0 18px 18px;
  }
  .nav-links a{
    height:46px;
    justify-content:center;
    border-radius:12px;
    font-size:.95rem;
  }
  .nav-links a.active::after{display:none}
  .nav-open .nav-links{display:flex}
  .nav-toggle{
    display:inline-flex;
  }
  .header-actions{
    margin-left:auto;
  }
  .search-box{display:none}
  .page-hero{
    min-height:520px;
    padding:90px 0 70px;
  }
  .intro-wrap{
    grid-template-columns:1fr;
    gap:34px;
  }
  .intro-visual{
    max-width:560px;
  }
  .steps-grid{
    grid-template-columns:1fr;
  }
  .article-list{
    grid-template-columns:1fr;
  }
  .stats-grid{
    grid-template-columns:repeat(2,1fr);
  }
  .footer-grid{
    grid-template-columns:1fr;
    gap:34px;
  }
  .footer-bottom{
    flex-direction:column;
    text-align:center;
  }
}
@media (max-width:520px){
  .container{padding:0 16px}
  .site-header .container{height:64px}
  .nav-links{top:64px}
  .logo{font-size:.98rem;gap:8px}
  .logo-icon{width:36px;height:36px;font-size:1rem}
  .header-actions .btn-sm{display:none}
  .hero-stats{flex-direction:column;gap:20px}
  .hero-btns{flex-direction:column}
  .hero-btns .btn{width:100%}
  .guide-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .cta-btns{flex-direction:column}
  .cta-btns .btn{width:100%}
  .section-title{font-size:1.7rem}
}

/* roulang page: article */
/* ============ Design Tokens ============ */
:root{
  --primary:#17233f;
  --primary-800:#101a30;
  --primary-600:#1e2a4a;
  --primary-500:#2a3a66;
  --accent:#ff5a36;
  --accent-600:#f04a1f;
  --accent-soft:#fff1ec;
  --gold:#f5b446;
  --sky:#38bdf8;
  --bg:#f4f6fb;
  --bg-deep:#eef1f8;
  --white:#ffffff;
  --text:#142036;
  --text-body:#3a4a6b;
  --text-muted:#6b7a98;
  --border:#e3e8f2;
  --radius-lg:20px;
  --radius:14px;
  --radius-sm:9px;
  --shadow-sm:0 4px 14px rgba(20,32,54,.06);
  --shadow:0 12px 34px rgba(20,32,54,.09);
  --shadow-lg:0 24px 60px rgba(20,32,54,.16);
  --container:1200px;
  --header-h:74px;
  --transition:.25s ease;
}
/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color var(--transition)}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:3px solid rgba(56,189,248,.55);outline-offset:2px;border-radius:4px}
/* ============ Buttons & Badges ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;
  border:2px solid transparent;transition:all var(--transition);white-space:nowrap;
}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(255,90,54,.32)}
.btn-primary:hover{background:var(--accent-600);transform:translateY(-2px);box-shadow:0 12px 30px rgba(255,90,54,.4)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.35);backdrop-filter:blur(6px)}
.btn-ghost:hover{background:rgba(255,255,255,.2);border-color:rgba(255,255,255,.7);transform:translateY(-2px)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);padding:10px 22px}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;
  border-radius:999px;font-size:13px;font-weight:600;line-height:1.4;
}
.badge-accent{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,90,54,.35)}
.badge-dark{background:rgba(20,32,54,.72);color:#fff;backdrop-filter:blur(4px)}
.badge-sky{background:rgba(56,189,248,.12);color:#0677a8;border:1px solid rgba(56,189,248,.4)}
/* ============ Header / Nav ============ */
.site-header{
  position:sticky;top:0;z-index:1000;height:var(--header-h);
  background:rgba(255,255,255,.96);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);box-shadow:0 4px 20px rgba(20,32,54,.05);
}
.header-inner{height:var(--header-h);display:flex;align-items:center;gap:22px}
.logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);letter-spacing:.3px}
.logo-icon{
  width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary-600),var(--primary));color:var(--accent);
  font-size:19px;box-shadow:0 8px 20px rgba(30,42,74,.25);
}
.logo-text{white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:36px;margin:0 auto}
.nav-links a{position:relative;font-weight:600;font-size:15px;color:var(--text-body);padding:8px 2px}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:3px;border-radius:3px;
  background:var(--accent);transition:width var(--transition);
}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{width:100%}
.header-actions{display:flex;align-items:center;gap:12px}
.search-box{
  display:flex;align-items:center;background:var(--bg-deep);
  border:1px solid var(--border);border-radius:999px;padding:4px 6px 4px 16px;
  transition:all var(--transition);width:220px;
}
.search-box:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(255,90,54,.1)}
.search-box input{border:none;background:transparent;width:100%;font-size:14px;outline:none;color:var(--text)}
.search-box button{
  width:32px;height:32px;border:none;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;transition:all var(--transition);
}
.search-box button:hover{background:var(--accent)}
.header-cta{box-shadow:none}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;
  background:#fff;color:var(--primary);font-size:18px;align-items:center;justify-content:center;
}
/* ============ Article Banner ============ */
.article-banner{
  padding:72px 0 70px;color:#fff;position:relative;background-size:cover;background-position:center;
  border-bottom:4px solid var(--accent);
}
.article-banner::after{content:"";position:absolute;inset:auto 0 0 0;height:120px;background:linear-gradient(transparent,rgba(4,10,25,.25));pointer-events:none}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;margin-bottom:34px;flex-wrap:wrap;color:rgba(255,255,255,.82)}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:11px;color:rgba(255,255,255,.45)}
.breadcrumb .current{color:#fff;font-weight:600;max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-banner-body{max-width:860px}
.article-banner-body .badge{margin-bottom:18px}
.article-banner-body h1{
  font-size:clamp(28px,4.4vw,46px);line-height:1.22;font-weight:800;
  letter-spacing:.5px;margin:16px 0 18px;text-shadow:0 4px 20px rgba(0,0,0,.2);
}
.article-desc{font-size:16px;color:rgba(255,255,255,.9);margin-bottom:26px;max-width:720px;line-height:1.8}
.article-meta{display:flex;align-items:center;gap:24px;flex-wrap:wrap;font-size:14px;color:rgba(255,255,255,.85)}
.article-meta span{display:inline-flex;align-items:center;gap:8px}
.article-meta i{color:var(--accent)}
/* ============ Article Layout ============ */
.article-main{padding:56px 0 64px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:44px;align-items:start}
.article-primary{min-width:0}
.article-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:44px 48px;box-shadow:var(--shadow-sm);
}
.article-body{font-size:16.5px;color:var(--text-body);line-height:1.9}
.article-body h2{font-size:24px;color:var(--text);margin:36px 0 16px;line-height:1.45;padding-left:16px;border-left:4px solid var(--accent)}
.article-body h3{font-size:19px;color:var(--text);margin:28px 0 12px}
.article-body h4{font-size:17px;color:var(--text);margin:22px 0 10px}
.article-body p{margin-bottom:18px}
.article-body img{border-radius:var(--radius);margin:24px 0;box-shadow:var(--shadow)}
.article-body a{color:var(--accent-600);font-weight:600;border-bottom:1px dashed rgba(240,74,31,.4)}
.article-body a:hover{border-bottom-style:solid}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:24px}
.article-body ul li{position:relative;padding-left:6px;margin-bottom:9px}
.article-body ul li::before{content:"\f058";font-family:"Font Awesome 6 Free";font-weight:900;position:absolute;left:-22px;color:var(--accent);font-size:14px;top:2px}
.article-body ol{list-style:decimal}
.article-body ol li{margin-bottom:9px;padding-left:4px}
.article-body blockquote{
  margin:26px 0;padding:20px 26px;background:var(--accent-soft);
  border-left:4px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;
  color:var(--text);font-weight:500;font-size:16px;
}
.article-body blockquote p{margin:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th{background:var(--primary);color:#fff;text-align:left;padding:12px 14px;font-weight:600}
.article-body td{padding:11px 14px;border-bottom:1px solid var(--border)}
.article-body tr:nth-child(even) td{background:var(--bg-deep)}
.article-body code{background:var(--bg-deep);padding:2px 8px;border-radius:6px;font-size:14px;color:var(--primary-600)}
.not-found{
  padding:70px 24px;text-align:center;
}
.not-found i{font-size:52px;color:var(--border);margin-bottom:18px}
.not-found h2{font-size:26px;color:var(--text);margin-bottom:12px}
.not-found p{color:var(--text-muted);margin-bottom:26px;max-width:440px;margin-left:auto;margin-right:auto}
/* Tags & Share */
.article-tags{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  margin-top:34px;padding-top:24px;border-top:1px solid var(--border);
}
.tags-label{font-weight:700;color:var(--text);display:inline-flex;align-items:center;gap:8px;margin-right:6px}
.tags-label i{color:var(--accent)}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;
  background:var(--bg-deep);color:var(--text-body);font-size:13px;font-weight:600;
  border:1px solid var(--border);transition:all var(--transition);
}
.tag:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-2px)}
.share-row{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px;
  margin-top:28px;padding:18px 22px;background:var(--bg-deep);border-radius:var(--radius);
}
.share-row span{font-weight:600;color:var(--text)}
.share-row .share-btns{display:flex;gap:10px}
.share-btn{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px solid var(--border);color:var(--text-muted);font-size:15px;transition:all var(--transition);
}
.share-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(-3px)}
/* ============ Sidebar ============ */
.article-sidebar{display:flex;flex-direction:column;gap:26px;position:sticky;top:calc(var(--header-h) + 24px)}
.sidebar-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);transition:all var(--transition);
}
.sidebar-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.sidebar-card-head{display:flex;align-items:center;gap:10px;margin-bottom:20px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.sidebar-card-head i{width:34px;height:34px;background:var(--accent-soft);color:var(--accent);border-radius:9px;display:flex;align-items:center;justify-content:center;font-size:15px}
.sidebar-card-head h3{font-size:16px;font-weight:700;color:var(--text)}
.info-list li{display:flex;align-items:center;justify-content:space-between;padding:9px 0;font-size:14px;border-bottom:1px dashed var(--border)}
.info-list li:last-child{border-bottom:none}
.info-list li span{color:var(--text-muted)}
.info-list li strong{color:var(--text);font-weight:600;font-size:13.5px;text-align:right}
.guide-list li{margin-bottom:4px}
.guide-list a{display:flex;align-items:center;gap:12px;padding:11px 12px;border-radius:10px;font-size:14px;font-weight:500;color:var(--text-body);transition:all var(--transition)}
.guide-list a:hover{background:var(--accent-soft);color:var(--accent-600);transform:translateX(4px)}
.guide-list i{width:32px;height:32px;background:var(--primary);color:#fff;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:13px;flex-shrink:0}
.cta-card{
  background:linear-gradient(150deg,var(--primary-800),var(--primary-600));
  color:#fff;text-align:center;border:none;
}
.cta-card > i{font-size:36px;color:var(--gold);margin-bottom:12px}
.cta-card h3{font-size:19px;margin-bottom:10px;color:#fff}
.cta-card p{color:rgba(255,255,255,.78);font-size:14px;margin-bottom:22px}
.cta-card .btn{background:var(--accent);box-shadow:0 10px 26px rgba(255,90,54,.4)}
.cta-card .btn:hover{background:#ff7a56}
/* ============ Related ============ */
.related-section{padding:60px 0;background:var(--bg-deep)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px;flex-wrap:wrap}
.section-head h2{font-size:26px;font-weight:800;color:var(--text);position:relative;padding-bottom:12px}
.section-head h2::after{content:"";position:absolute;left:0;bottom:0;width:44px;height:4px;border-radius:4px;background:var(--accent)}
.section-head .more-link{font-size:14px;font-weight:600;color:var(--text-muted);display:inline-flex;align-items:center;gap:8px}
.section-head .more-link:hover{color:var(--accent)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.related-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  transition:all var(--transition);display:flex;flex-direction:column;
}
.related-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.related-cover{position:relative;overflow:hidden;aspect-ratio:16/10;display:block}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-item:hover .related-cover img{transform:scale(1.06)}
.related-cover .badge{position:absolute;top:14px;left:14px}
.related-info{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1}
.related-info h3{font-size:16.5px;line-height:1.55;margin-bottom:10px;font-weight:700;color:var(--text)}
.related-info h3 a:hover{color:var(--accent)}
.related-info p{font-size:13.5px;color:var(--text-muted);margin-bottom:14px;line-height:1.7;flex:1}
.related-meta{display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-muted)}
.related-meta i{margin-right:4px;color:var(--accent)}
.view-link{font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:6px}
.view-link:hover{color:var(--accent)}
/* ============ FAQ ============ */
.faq-section{padding:64px 0}
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  margin-bottom:14px;overflow:hidden;transition:box-shadow var(--transition);
}
.faq-item.active{box-shadow:var(--shadow);border-color:rgba(255,90,54,.35)}
.faq-question{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 26px;background:transparent;border:none;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);transition:color var(--transition);
}
.faq-question:hover{color:var(--accent)}
.faq-question i{color:var(--accent);font-size:18px;transition:transform .35s ease;flex-shrink:0}
.faq-item.active .faq-question i{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.active .faq-answer{max-height:320px}
.faq-answer p{padding:0 26px 22px;color:var(--text-body);font-size:15px;line-height:1.85}
/* ============ CTA ============ */
.cta-banner{
  padding:74px 0;color:#fff;text-align:center;position:relative;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(16,26,48,.95),rgba(42,58,102,.88)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.cta-banner .cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-banner h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:16px}
.cta-banner p{color:rgba(255,255,255,.85);font-size:16px;margin-bottom:30px;line-height:1.8}
.cta-btns{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
/* ============ Footer ============ */
.footer{background:var(--primary-800);color:#aeb9d4;padding:60px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:44px;padding-bottom:40px}
.footer-brand .logo{color:#fff;margin-bottom:18px}
.footer-brand .logo-icon{background:linear-gradient(135deg,var(--accent),#ff7a56);color:#fff}
.footer-brand p{font-size:14px;line-height:1.85;max-width:360px}
.footer h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer h4::after{content:"";position:absolute;left:0;bottom:0;width:26px;height:3px;border-radius:3px;background:var(--accent)}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:#aeb9d4;display:inline-flex;align-items:center;gap:8px;transition:all var(--transition)}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-links i{font-size:10px;color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.09);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:#8b96b3;
}
.footer-bottom i{color:var(--accent);margin-right:4px}
/* ============ Responsive ============ */
@media (max-width:1100px){
  .article-grid{grid-template-columns:minmax(0,1fr) 310px;gap:32px}
  .article-card{padding:34px 32px}
}
@media (max-width:980px){
  .search-box{display:none}
  .article-grid{grid-template-columns:1fr}
  .article-sidebar{position:static;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:900px){
  .nav-links{
    position:fixed;top:var(--header-h);left:0;right:0;z-index:999;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:14px 24px 20px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);
    display:none;max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:14px 4px;border-bottom:1px solid var(--border)}
  .nav-links a:last-child{border-bottom:none}
  .nav-links a::after{display:none}
  .nav-links a.active{color:var(--accent)}
  .nav-toggle{display:flex}
}
@media (max-width:768px){
  .article-banner{padding:52px 0 48px}
  .article-card{padding:26px 20px;border-radius:16px}
  .article-sidebar{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .article-meta{gap:12px 18px}
  .article-banner-body h1{font-size:27px}
  .section-head h2{font-size:22px}
  .header-cta{display:none}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .logo-text{font-size:17px}
  .logo-icon{width:38px;height:38px;font-size:16px}
  .article-card{padding:22px 16px}
  .article-body{font-size:15.5px}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:17px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
  .share-row{flex-direction:column;align-items:flex-start}
  .cta-btns{flex-direction:column;align-items:stretch}
  .cta-btns .btn{width:100%}
}