/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f1b4d;
  --primary-light: #1a2a6c;
  --primary-dark: #0a102e;
  --accent: #c9a84c;
  --accent-light: #e0c56e;
  --accent-dark: #a88a30;
  --bg: #f5f6fa;
  --bg-card: #ffffff;
  --bg-dark: #0f1b4d;
  --text: #1a1a2e;
  --text-light: #6b7280;
  --text-white: #ffffff;
  --border: #e5e7eb;
  --border-light: #f0f0f0;
  --shadow: 0 4px 20px rgba(15, 27, 77, 0.08);
  --shadow-lg: 0 12px 40px rgba(15, 27, 77, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --header-h: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font); font-size: 16px; line-height: 1.6; color: var(--text); background: var(--bg); min-height: 100vh; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }

/* ===== Container ===== */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
h1 { font-size: 2.8rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
.section-title { text-align: center; margin-bottom: 48px; }
.section-title h2 { position: relative; display: inline-block; }
.section-title h2::after { content: ''; display: block; width: 60px; height: 3px; background: var(--accent); margin: 12px auto 0; border-radius: 2px; }
.section-title p { color: var(--text-light); margin-top: 12px; font-size: 1.05rem; max-width: 600px; margin-left: auto; margin-right: auto; }

/* ===== Header / Nav ===== */
.header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: rgba(15, 27, 77, 0.95); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid rgba(255,255,255,0.06); height: var(--header-h); transition: var(--transition); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.5rem; font-weight: 800; color: var(--text-white); letter-spacing: -0.02em; }
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo span { background: linear-gradient(135deg, #fff 60%, var(--accent-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-desktop { display: flex; align-items: center; gap: 8px; }
.nav-desktop a { padding: 8px 20px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.75); font-weight: 500; font-size: 0.95rem; transition: var(--transition); position: relative; }
.nav-desktop a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-desktop a.active { color: #fff; background: rgba(201, 168, 76, 0.2); }
.nav-desktop a.active::after { content: ''; position: absolute; bottom: 4px; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--accent); border-radius: 1px; }
.nav-cta { background: var(--accent) !important; color: var(--primary-dark) !important; font-weight: 700 !important; padding: 10px 24px !important; border-radius: var(--radius-sm) !important; }
.nav-cta:hover { background: var(--accent-light) !important; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(201,168,76,0.35) !important; }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 28px; height: 2.5px; background: #fff; border-radius: 2px; transition: var(--transition); }
.mobile-menu { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: rgba(15,27,77,0.98); backdrop-filter: blur(16px); padding: 32px 24px; flex-direction: column; gap: 12px; z-index: 999; overflow-y: auto; }
.mobile-menu a { padding: 14px 20px; border-radius: var(--radius-sm); color: rgba(255,255,255,0.8); font-size: 1.1rem; font-weight: 500; border-bottom: 1px solid rgba(255,255,255,0.05); display: flex; align-items: center; gap: 12px; }
.mobile-menu a i { width: 24px; text-align: center; color: var(--accent); }
.mobile-menu a.active { color: var(--accent); background: rgba(201,168,76,0.1); }
.mobile-menu a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.mobile-menu.show { display: flex; }

/* ===== Mobile Bottom Tab ===== */
.mobile-tab { display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1001; background: rgba(15,27,77,0.98); backdrop-filter: blur(12px); border-top: 1px solid rgba(255,255,255,0.06); padding: 6px 0 env(safe-area-inset-bottom, 6px) 0; justify-content: space-around; }
.mobile-tab a { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 12px; color: rgba(255,255,255,0.5); font-size: 0.65rem; font-weight: 500; transition: var(--transition); border-radius: var(--radius-sm); }
.mobile-tab a i { font-size: 1.3rem; transition: var(--transition); }
.mobile-tab a:hover { color: rgba(255,255,255,0.8); }
.mobile-tab a.active { color: var(--accent); }
.mobile-tab a.active i { transform: scale(1.1); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 90vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 120px 24px 80px; background: var(--primary-dark); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.3; transform: scale(1.05); animation: heroZoom 20s ease-in-out infinite alternate; }
@keyframes heroZoom { 0% { transform: scale(1); } 100% { transform: scale(1.08); } }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,27,77,0.85) 0%, rgba(10,16,46,0.75) 50%, rgba(15,27,77,0.85) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 800px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(201,168,76,0.15); border: 1px solid rgba(201,168,76,0.25); color: var(--accent-light); padding: 6px 18px; border-radius: 50px; font-size: 0.85rem; font-weight: 600; margin-bottom: 24px; backdrop-filter: blur(4px); }
.hero h1 { color: var(--text-white); font-size: 3.2rem; margin-bottom: 20px; line-height: 1.2; }
.hero h1 em { color: var(--accent); font-style: normal; }
.hero p { color: rgba(255,255,255,0.7); font-size: 1.15rem; max-width: 600px; margin: 0 auto 36px; line-height: 1.7; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 700; font-size: 1rem; transition: var(--transition); border: 2px solid transparent; }
.btn-primary { background: var(--accent); color: var(--primary-dark); border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); border-color: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,168,76,0.35); color: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--text-white); border-color: rgba(255,255,255,0.3); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); transform: translateY(-2px); color: #fff; }
.hero-search { margin-top: 40px; display: flex; gap: 0; max-width: 520px; margin-left: auto; margin-right: auto; border-radius: var(--radius); overflow: hidden; box-shadow: 0 8px 32px rgba(0,0,0,0.2); }
.hero-search input { flex: 1; padding: 16px 20px; font-size: 1rem; background: rgba(255,255,255,0.12); backdrop-filter: blur(8px); color: #fff; border: 1px solid rgba(255,255,255,0.15); border-right: none; }
.hero-search input::placeholder { color: rgba(255,255,255,0.4); }
.hero-search input:focus { background: rgba(255,255,255,0.18); border-color: var(--accent); }
.hero-search button { padding: 16px 28px; background: var(--accent); color: var(--primary-dark); font-weight: 700; font-size: 1rem; transition: var(--transition); }
.hero-search button:hover { background: var(--accent-light); }

/* ===== Section Spacing ===== */
.section { padding: 80px 0; }
.section-alt { background: var(--bg-card); }

/* ===== Intro / 平台简介 ===== */
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-image { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.intro-image img { width: 100%; height: 420px; object-fit: cover; transition: var(--transition); }
.intro-image:hover img { transform: scale(1.02); }
.intro-text h3 { font-size: 1.8rem; margin-bottom: 20px; }
.intro-text p { color: var(--text-light); line-height: 1.8; margin-bottom: 16px; font-size: 1.02rem; }
.intro-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.tag { display: inline-flex; align-items: center; gap: 6px; padding: 6px 16px; background: rgba(201,168,76,0.1); color: var(--primary); border-radius: 50px; font-size: 0.85rem; font-weight: 600; border: 1px solid rgba(201,168,76,0.2); }

/* ===== Category Card ===== */
.cat-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border); }
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.cat-card-img { height: 200px; overflow: hidden; }
.cat-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.cat-card:hover .cat-card-img img { transform: scale(1.05); }
.cat-card-body { padding: 24px; }
.cat-card-body h3 { font-size: 1.2rem; margin-bottom: 8px; }
.cat-card-body p { color: var(--text-light); font-size: 0.92rem; line-height: 1.6; margin-bottom: 16px; }
.cat-card-link { color: var(--accent); font-weight: 700; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
.cat-card-link i { transition: var(--transition); }
.cat-card-link:hover i { transform: translateX(4px); }

/* ===== News / 资讯列表 ===== */
.news-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 24px; }
.news-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: var(--transition); border: 1px solid var(--border); display: flex; flex-direction: column; }
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.news-card-img { height: 180px; overflow: hidden; position: relative; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-card-img img { transform: scale(1.04); }
.news-card-cat { position: absolute; top: 12px; left: 12px; background: var(--accent); color: var(--primary-dark); padding: 4px 14px; border-radius: 50px; font-size: 0.75rem; font-weight: 700; }
.news-card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-card-body h3 { font-size: 1.05rem; margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-card-body p { color: var(--text-light); font-size: 0.88rem; line-height: 1.6; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 12px; }
.news-card-meta { display: flex; align-items: center; justify-content: space-between; padding-top: 12px; border-top: 1px solid var(--border-light); font-size: 0.8rem; color: var(--text-light); }
.news-card-meta i { margin-right: 4px; }
.news-card-meta a { color: var(--primary); font-weight: 600; }
.news-card-meta a:hover { color: var(--accent); }
.news-empty { text-align: center; padding: 60px 20px; color: var(--text-light); grid-column: 1 / -1; }
.news-empty i { font-size: 3rem; color: var(--border); margin-bottom: 16px; display: block; }

/* ===== Stats / 数据 ===== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; padding: 32px 20px; background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); transition: var(--transition); }
.stat-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-icon { font-size: 2rem; color: var(--accent); margin-bottom: 12px; }
.stat-number { font-size: 2.4rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-label { color: var(--text-light); font-size: 0.9rem; margin-top: 6px; }

/* ===== Process / 流程 ===== */
.process-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.process-step { text-align: center; padding: 32px 20px; background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); position: relative; transition: var(--transition); }
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.process-step .step-num { width: 48px; height: 48px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; font-weight: 800; margin: 0 auto 16px; }
.process-step h4 { font-size: 1.1rem; margin-bottom: 8px; }
.process-step p { color: var(--text-light); font-size: 0.9rem; line-height: 1.6; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid var(--border); overflow: hidden; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow-lg); }
.faq-q { padding: 20px 24px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; font-weight: 700; font-size: 1rem; color: var(--primary); transition: var(--transition); }
.faq-q i { color: var(--accent); transition: var(--transition); font-size: 1.1rem; }
.faq-item.open .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 24px; color: var(--text-light); line-height: 1.7; font-size: 0.95rem; }
.faq-item.open .faq-a { max-height: 300px; padding: 0 24px 20px; }

/* ===== CTA ===== */
.cta-section { background: var(--primary); position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.08; }
.cta-content { position: relative; z-index: 2; text-align: center; padding: 60px 0; }
.cta-content h2 { color: var(--text-white); font-size: 2.2rem; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,0.7); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }

/* ===== Footer ===== */
.footer { background: var(--primary-dark); color: rgba(255,255,255,0.6); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand .logo { font-size: 1.4rem; margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-social a:hover { background: var(--accent); color: var(--primary-dark); }
.footer h4 { color: var(--text-white); font-size: 1rem; margin-bottom: 16px; font-weight: 700; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.footer ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.82rem; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-image img { height: 320px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  :root { --header-h: 64px; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.6rem; }
  .hero { min-height: 70vh; padding: 100px 16px 60px; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1rem; }
  .nav-desktop { display: none; }
  .hamburger { display: flex; }
  .mobile-tab { display: flex; }
  body { padding-bottom: 60px; }
  .section { padding: 56px 0; }
  .news-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .intro-image img { height: 240px; }
  .cat-card-img { height: 160px; }
  .hero-search { flex-direction: column; border-radius: var(--radius-sm); }
  .hero-search input { border-right: 1px solid rgba(255,255,255,0.15); border-bottom: none; border-radius: var(--radius-sm) var(--radius-sm) 0 0; }
  .hero-search button { border-radius: 0 0 var(--radius-sm) var(--radius-sm); }
  .stat-number { font-size: 1.8rem; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 20px 12px; }
  .stat-number { font-size: 1.5rem; }
  .intro-image img { height: 200px; }
  .news-card-img { height: 150px; }
  .cta-content h2 { font-size: 1.5rem; }
  .btn { padding: 12px 24px; font-size: 0.9rem; }
}

/* ===== A11y ===== */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #1a3a5c;
  --primary-light: #2a5a8a;
  --primary-dark: #0f2440;
  --accent: #e85d3a;
  --accent-light: #f07a5a;
  --accent-dark: #c44a2a;
  --bg-light: #f7f9fb;
  --bg-white: #ffffff;
  --bg-dark: #0f1a2e;
  --text-dark: #1a2a3a;
  --text-mid: #4a5a6a;
  --text-light: #8a9aaa;
  --text-white: #f0f4f8;
  --border: #e2e8f0;
  --border-light: #f0f2f5;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-hover: 0 12px 36px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --container: 1200px;
  --header-h: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--bg-light);
  -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; }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; border: none; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.section-sub {
  font-size: 1.1rem;
  color: var(--text-mid);
  max-width: 640px;
  margin-bottom: 2.5rem;
}
.text-center { text-align: center; }
.mx-auto { margin-left: auto; margin-right: auto; }

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  transition: var(--transition);
}
.logo i { color: var(--accent); font-size: 1.6rem; }
.logo:hover { color: var(--primary-light); transform: scale(1.02); }
.nav-desktop { display: flex; align-items: center; gap: 8px; }
.nav-desktop a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  color: var(--text-mid);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}
.nav-desktop a i { margin-right: 6px; font-size: 0.85rem; }
.nav-desktop a:hover { color: var(--primary); background: rgba(26,58,92,0.06); }
.nav-desktop a.active { color: var(--primary); background: rgba(26,58,92,0.08); font-weight: 600; }
.nav-desktop a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 4px;
}
.nav-desktop a.nav-cta {
  background: var(--accent);
  color: #fff;
  padding: 8px 22px;
  border-radius: 24px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(232,93,58,0.3);
}
.nav-desktop a.nav-cta:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,93,58,0.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 26px; height: 3px; background: var(--primary); border-radius: 4px; transition: var(--transition); }

/* ===== Mobile Nav ===== */
@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .hamburger { display: flex; }
  .header .container { padding: 0 16px; }
  .mobile-nav-open .nav-desktop {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--bg-white);
    border-bottom: 2px solid var(--border);
    padding: 16px 24px;
    gap: 4px;
    box-shadow: var(--shadow-md);
  }
  .mobile-nav-open .nav-desktop a { padding: 12px 16px; width: 100%; border-radius: var(--radius-sm); }
  .mobile-nav-open .nav-desktop a.nav-cta { text-align: center; margin-top: 4px; }
}

/* ===== Page Banner ===== */
.page-banner {
  margin-top: var(--header-h);
  padding: 60px 0 50px;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  position: relative;
  overflow: hidden;
  min-height: 220px;
  display: flex;
  align-items: center;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
  mix-blend-mode: overlay;
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
  line-height: 1.3;
  text-shadow: 0 2px 12px rgba(0,0,0,0.2);
}
.page-banner .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.7);
  font-size: 0.95rem;
  flex-wrap: wrap;
}
.page-banner .breadcrumb a { color: rgba(255,255,255,0.85); }
.page-banner .breadcrumb a:hover { color: #fff; }
.page-banner .breadcrumb .sep { color: rgba(255,255,255,0.4); }

/* ===== Article Main ===== */
.article-main { padding: 50px 0 80px; }
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
  align-items: start;
}
.article-body {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 40px;
  overflow: hidden;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-mid);
  font-size: 0.9rem;
}
.article-meta span { display: flex; align-items: center; gap: 6px; }
.article-meta i { color: var(--accent); font-size: 0.85rem; }
.article-meta .badge {
  background: var(--primary);
  color: #fff;
  padding: 2px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}
.article-cover {
  width: 100%;
  border-radius: var(--radius-sm);
  margin-bottom: 28px;
  max-height: 480px;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
}
.article-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-dark);
}
.article-content h2, .article-content h3 {
  margin-top: 2rem;
  margin-bottom: 0.8rem;
  color: var(--primary);
  font-weight: 700;
}
.article-content h2 { font-size: 1.6rem; }
.article-content h3 { font-size: 1.25rem; }
.article-content p { margin-bottom: 1.2rem; }
.article-content ul, .article-content ol { margin-bottom: 1.2rem; padding-left: 1.6rem; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 0.4rem; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--bg-light);
  padding: 16px 24px;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-mid);
  font-style: italic;
}
.article-content img { border-radius: var(--radius-sm); margin: 1.5rem auto; }
.article-content a { color: var(--accent); font-weight: 500; text-decoration: underline; }
.article-content a:hover { color: var(--accent-dark); }
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border-light);
}
.article-tags .tag {
  background: var(--bg-light);
  color: var(--text-mid);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  transition: var(--transition);
  border: 1px solid var(--border);
}
.article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 32px; }
.sidebar-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 28px 24px;
}
.sidebar-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--accent); }
.sidebar-list li { border-bottom: 1px solid var(--border-light); }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  color: var(--text-mid);
  font-size: 0.95rem;
  transition: var(--transition);
}
.sidebar-list a:hover { color: var(--accent); padding-left: 6px; }
.sidebar-list a i { color: var(--accent); font-size: 0.7rem; }
.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.sidebar-tags a {
  background: var(--bg-light);
  color: var(--text-mid);
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.sidebar-tags a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 64px 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/cover no-repeat;
  opacity: 0.08;
  mix-blend-mode: overlay;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2rem; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-section p { color: rgba(255,255,255,0.8); font-size: 1.1rem; max-width: 600px; margin: 0 auto 28px; }
.cta-btn-group { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-btn {
  padding: 14px 36px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1.05rem;
  background: var(--accent);
  color: #fff;
  transition: var(--transition);
  box-shadow: 0 6px 20px rgba(232,93,58,0.4);
}
.cta-btn:hover { background: var(--accent-dark); transform: translateY(-3px); box-shadow: 0 12px 32px rgba(232,93,58,0.5); color: #fff; }
.cta-btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,0.5);
  color: #fff;
  padding: 14px 36px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1.05rem;
  transition: var(--transition);
}
.cta-btn-outline:hover { background: rgba(255,255,255,0.15); border-color: #fff; color: #fff; }

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 60px 0 20px;
}
.footer .logo { color: #fff; margin-bottom: 16px; }
.footer .logo i { color: var(--accent); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand p { color: rgba(255,255,255,0.6); font-size: 0.92rem; line-height: 1.7; margin-bottom: 16px; }
.footer-social { display: flex; gap: 14px; }
.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1.15rem;
  transition: var(--transition);
}
.footer-social a:hover { background: var(--accent); color: #fff; transform: translateY(-3px); }
.footer h4 { font-size: 1rem; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer ul li { margin-bottom: 10px; }
.footer ul a { color: rgba(255,255,255,0.55); font-size: 0.9rem; transition: var(--transition); display: flex; align-items: center; gap: 8px; }
.footer ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  color: rgba(255,255,255,0.4);
  font-size: 0.85rem;
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Mobile Bottom Tab ===== */
.mobile-tab-bar {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  z-index: 999;
  padding: 6px 0 env(safe-area-inset-bottom, 6px);
  box-shadow: 0 -4px 16px rgba(0,0,0,0.06);
}
.mobile-tab-bar .tab-inner { display: flex; justify-content: space-around; align-items: center; }
.mobile-tab-bar a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 12px;
  color: var(--text-light);
  font-size: 0.65rem;
  transition: var(--transition);
  border-radius: var(--radius-sm);
}
.mobile-tab-bar a i { font-size: 1.2rem; }
.mobile-tab-bar a.active { color: var(--accent); }
.mobile-tab-bar a:hover { color: var(--primary); }

@media (max-width: 768px) {
  .mobile-tab-bar { display: block; }
  body { padding-bottom: 64px; }
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
}
@media (max-width: 768px) {
  .section { padding: 48px 0; }
  .section-title { font-size: 1.5rem; }
  .page-banner { padding: 40px 0 36px; min-height: 160px; }
  .page-banner h1 { font-size: 1.5rem; }
  .article-body { padding: 24px 16px; }
  .article-meta { gap: 10px 16px; font-size: 0.82rem; }
  .article-content { font-size: 0.98rem; }
  .article-sidebar { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .header .container { padding: 0 12px; }
  .logo { font-size: 1.15rem; }
  .logo i { font-size: 1.3rem; }
  .page-banner h1 { font-size: 1.25rem; }
  .article-body { padding: 16px 12px; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-btn, .cta-btn-outline { width: 100%; text-align: center; }
}

/* ===== Not Found ===== */
.not-found-box {
  text-align: center;
  padding: 60px 20px;
}
.not-found-box i { font-size: 4rem; color: var(--text-light); margin-bottom: 20px; }
.not-found-box h2 { font-size: 1.8rem; color: var(--primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-mid); margin-bottom: 24px; }
.not-found-box .btn-home {
  display: inline-block;
  padding: 12px 32px;
  background: var(--accent);
  color: #fff;
  border-radius: 30px;
  font-weight: 600;
  transition: var(--transition);
}
.not-found-box .btn-home:hover { background: var(--accent-dark); transform: translateY(-2px); }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1e40af;
            --primary-light: #2563eb;
            --primary-dark: #1e3a8a;
            --accent: #ea580c;
            --accent-light: #f97316;
            --accent-dark: #c2410c;
            --bg-body: #f8fafc;
            --bg-card: #ffffff;
            --bg-dark: #0f172a;
            --bg-section-alt: #f1f5f9;
            --text-primary: #1e293b;
            --text-secondary: #475569;
            --text-muted: #94a3b8;
            --text-white: #ffffff;
            --border-color: #e2e8f0;
            --border-radius: 12px;
            --border-radius-sm: 8px;
            --border-radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --nav-height: 72px;
            --footer-bg: #0f172a;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            padding-top: var(--nav-height);
            padding-bottom: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-primary);
        }
        /* focus-visible 可访问性 */
        :focus-visible {
            outline: 3px solid var(--primary-light);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        /* ===== 导航 Header ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            transition: box-shadow var(--transition);
        }
        .header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        .logo i {
            font-size: 1.8rem;
            color: var(--accent);
            transition: transform var(--transition);
        }
        .logo:hover i {
            transform: rotate(-10deg) scale(1.1);
        }
        .logo:hover {
            color: var(--primary-dark);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-desktop a {
            padding: 8px 18px;
            border-radius: var(--border-radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-desktop a i {
            margin-right: 6px;
            font-size: 0.85rem;
        }
        .nav-desktop a:hover {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.06);
        }
        .nav-desktop a.active {
            color: var(--primary);
            background: rgba(30, 64, 175, 0.1);
            font-weight: 600;
        }
        .nav-desktop a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 3px;
            border-radius: 4px;
            background: var(--primary-light);
        }
        .nav-desktop a.nav-cta {
            background: var(--accent);
            color: #fff;
            padding: 8px 24px;
            border-radius: 50px;
            font-weight: 600;
            margin-left: 8px;
            box-shadow: 0 4px 12px rgba(234, 88, 12, 0.3);
            transition: all var(--transition);
        }
        .nav-desktop a.nav-cta i {
            margin-right: 6px;
        }
        .nav-desktop a.nav-cta:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(234, 88, 12, 0.4);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--border-radius-sm);
            transition: background var(--transition);
            user-select: none;
        }
        .hamburger:hover {
            background: rgba(30, 64, 175, 0.06);
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 3px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: all var(--transition);
        }
        .hamburger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 6px);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -6px);
        }

        /* 移动端导航抽屉 */
        .nav-mobile {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 32px 24px;
            flex-direction: column;
            gap: 12px;
            z-index: 999;
            overflow-y: auto;
            opacity: 0;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            pointer-events: none;
        }
        .nav-mobile.open {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .nav-mobile a {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 20px;
            border-radius: var(--border-radius-sm);
            font-size: 1.1rem;
            font-weight: 500;
            color: var(--text-primary);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            text-decoration: none;
        }
        .nav-mobile a i {
            width: 24px;
            text-align: center;
            color: var(--primary-light);
        }
        .nav-mobile a:hover {
            background: var(--bg-section-alt);
            border-color: var(--primary-light);
        }
        .nav-mobile a.active {
            background: rgba(30, 64, 175, 0.08);
            border-color: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }
        .nav-mobile a.nav-cta-mobile {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .nav-mobile a.nav-cta-mobile i {
            color: #fff;
        }
        .nav-mobile a.nav-cta-mobile:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
        }

        /* ===== 移动端底部 Tab 导航 ===== */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 64px;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid var(--border-color);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
            padding: 0 12px;
            align-items: center;
            justify-content: space-around;
        }
        .bottom-tab a {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            padding: 6px 12px;
            border-radius: var(--border-radius-sm);
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--text-muted);
            text-decoration: none;
            transition: all var(--transition);
            min-width: 60px;
            position: relative;
        }
        .bottom-tab a i {
            font-size: 1.3rem;
            transition: transform var(--transition);
        }
        .bottom-tab a span {
            font-size: 0.65rem;
            line-height: 1;
        }
        .bottom-tab a:hover {
            color: var(--primary-light);
        }
        .bottom-tab a:hover i {
            transform: translateY(-2px);
        }
        .bottom-tab a.active {
            color: var(--primary);
        }
        .bottom-tab a.active i {
            color: var(--primary);
        }
        .bottom-tab a.active::after {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary-light);
        }
        .bottom-tab a.tab-cta {
            color: var(--accent);
        }
        .bottom-tab a.tab-cta i {
            color: var(--accent);
        }
        .bottom-tab a.tab-cta.active::after {
            background: var(--accent);
        }

        /* ===== Banner / Hero 分类页 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.8);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            transition: color var(--transition);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb i {
            font-size: 0.65rem;
            color: rgba(255, 255, 255, 0.5);
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -1px;
            text-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
        }
        .page-banner h1 i {
            color: var(--accent-light);
            margin-right: 12px;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 24px;
        }
        .page-banner .banner-tags span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-dark {
            background: var(--bg-dark);
            color: var(--text-white);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
        }
        .section-header h2 i {
            color: var(--accent);
            margin-right: 10px;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .divider {
            width: 60px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            margin: 16px auto 0;
        }

        /* ===== 分类简介板块 ===== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .intro-content h3 {
            font-size: 1.6rem;
            margin-bottom: 16px;
        }
        .intro-content p {
            color: var(--text-secondary);
            margin-bottom: 16px;
            line-height: 1.8;
        }
        .intro-content .intro-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 20px;
        }
        .intro-content .intro-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-secondary);
        }
        .intro-content .intro-list li i {
            color: var(--accent);
            margin-top: 4px;
            flex-shrink: 0;
        }
        .intro-image {
            border-radius: var(--border-radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            height: 360px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .intro-image:hover img {
            transform: scale(1.03);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .card-item {
            background: var(--bg-card);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .card-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .card-item .card-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .card-item .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .card-item:hover .card-image img {
            transform: scale(1.08);
        }
        .card-item .card-image .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            background: rgba(30, 64, 175, 0.85);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }
        .card-item .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-item .card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .card-item .card-body h3 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        .card-item .card-body h3 a:hover {
            color: var(--primary-light);
        }
        .card-item .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .card-item .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px 20px;
        }
        .card-item .card-footer .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .card-item .card-footer .meta i {
            margin-right: 4px;
        }
        .card-item .card-footer .btn-sm {
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
        }
        .card-item .card-footer .btn-sm:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(30, 64, 175, 0.3);
        }

        /* ===== 热门赛事列表 ===== */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg-card);
            border-radius: var(--border-radius);
            border: 1px solid var(--border-color);
            transition: all var(--transition);
            cursor: default;
        }
        .hot-item:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .hot-item .hot-rank {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 800;
            color: #fff;
            background: var(--primary);
            flex-shrink: 0;
        }
        .hot-item:nth-child(1) .hot-rank {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .hot-item:nth-child(2) .hot-rank {
            background: linear-gradient(135deg, #94a3b8, #64748b);
        }
        .hot-item:nth-child(3) .hot-rank {
            background: linear-gradient(135deg, #92400e, #78350f);
        }
        .hot-item:nth-child(4) .hot-rank {
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
        }
        .hot-item:nth-child(5) .hot-rank {
            background: linear-gradient(135deg, var(--accent-light), var(--accent));
        }
        .hot-item .hot-info {
            flex: 1;
        }
        .hot-item .hot-info h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        .hot-item .hot-info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .hot-item .hot-badge {
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(234, 88, 12, 0.1);
            color: var(--accent);
            flex-shrink: 0;
        }
        .hot-item .hot-badge.hot {
            background: rgba(239, 68, 68, 0.1);
            color: #dc2626;
        }
        .hot-item .hot-badge.new {
            background: rgba(16, 185, 129, 0.1);
            color: #059669;
        }
        .hot-item .hot-badge.trend {
            background: rgba(59, 130, 246, 0.1);
            color: #2563eb;
        }

        /* ===== 数据统计 ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .stat-item {
            text-align: center;
            padding: 36px 20px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--border-radius);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: all var(--transition);
        }
        .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .stat-number i {
            color: var(--accent-light);
            font-size: 2rem;
            margin-right: 8px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        /* ===== FAQ 折叠 ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--border-radius-sm);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-item .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            transition: background var(--transition);
            gap: 16px;
            user-select: none;
        }
        .faq-item .faq-question i {
            color: var(--primary-light);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item .faq-question:hover {
            background: rgba(30, 64, 175, 0.03);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            text-align: center;
            padding: 64px 40px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--border-radius-lg);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-block .container {
            position: relative;
            z-index: 2;
        }
        .cta-block h2 {
            font-size: 2rem;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-block p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-block .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }
        .cta-block .btn-primary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: #fff;
            color: var(--primary);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .cta-block .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
            background: var(--accent-light);
            color: #fff;
        }
        .cta-block .btn-secondary {
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-block .btn-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 56px 0 32px;
        }
        .footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .footer .footer-brand .logo span {
            background: linear-gradient(135deg, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer .footer-brand .logo i {
            color: var(--accent-light);
        }
        .footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 20px;
            max-width: 360px;
        }
        .footer .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: all var(--transition);
            text-decoration: none;
        }
        .footer .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: all var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer ul li a i {
            color: var(--accent-light);
            opacity: 0.6;
        }
        .footer ul li a:hover {
            color: #fff;
            transform: translateX(4px);
        }
        .footer ul li a:hover i {
            opacity: 1;
        }
        .footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
        }
        .footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 回到顶部 ===== */
        .back-to-top {
            position: fixed;
            bottom: 84px;
            right: 24px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            border: none;
            cursor: pointer;
            font-size: 1.2rem;
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
            z-index: 900;
            opacity: 0;
            transform: translateY(20px);
            pointer-events: none;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .back-to-top.show {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }
        .back-to-top:hover {
            background: var(--primary-dark);
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        /* ===== 响应式设计 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .page-banner h1 {
                font-size: 2.4rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .intro-grid {
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-bottom: 64px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-mobile {
                display: flex;
            }
            .bottom-tab {
                display: flex;
            }
            .page-banner {
                padding: 60px 0 48px;
                min-height: 240px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner h1 i {
                margin-right: 8px;
            }
            .page-banner p {
                font-size: 0.95rem;
            }
            .page-banner .banner-tags span {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .section {
                padding: 56px 0;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .intro-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .intro-image img {
                height: 240px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .card-item .card-image {
                height: 180px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                padding: 24px 16px;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .hot-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
                padding: 16px 18px;
            }
            .hot-item .hot-rank {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .cta-block {
                padding: 40px 24px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .cta-block .btn-primary,
            .cta-block .btn-secondary {
                padding: 12px 28px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: center;
            }
            .footer {
                padding: 40px 0 24px;
            }
            .footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer .footer-brand p {
                max-width: 100%;
            }
            .footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .back-to-top {
                bottom: 80px;
                right: 16px;
                width: 42px;
                height: 42px;
                font-size: 1rem;
            }
            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 0.9rem;
            }
            .faq-item .faq-answer {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .page-banner p {
                font-size: 0.85rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.6rem;
            }
            .stat-item .stat-number i {
                font-size: 1.2rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
            .card-item .card-body {
                padding: 18px;
            }
            .card-item .card-footer {
                padding: 0 18px 16px;
                flex-direction: column;
                gap: 10px;
                align-items: flex-start;
            }
            .card-item .card-footer .btn-sm {
                width: 100%;
                text-align: center;
            }
            .bottom-tab a {
                min-width: 48px;
                padding: 4px 8px;
            }
            .bottom-tab a i {
                font-size: 1.1rem;
            }
            .bottom-tab a span {
                font-size: 0.55rem;
            }
            .logo {
                font-size: 1.2rem;
            }
            .logo i {
                font-size: 1.4rem;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-16 {
            margin-bottom: 16px;
        }
        .mb-32 {
            margin-bottom: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }