/* roulang page: index */
:root {
  --color-primary: #141e32;
  --color-primary-light: #22314d;
  --color-primary-lighter: #31456b;
  --color-accent: #eaa53c;
  --color-accent-dark: #cc8d2e;
  --color-accent-light: #f6c96b;
  --color-bg: #f7f6f3;
  --color-surface: #ffffff;
  --color-surface-soft: #efede8;
  --color-text: #17202e;
  --color-text-weak: #6b7480;
  --color-border: #e4e2dd;
  --color-white: #ffffff;
  --shadow-xs: 0 1px 2px rgba(20,30,50,.05);
  --shadow-sm: 0 2px 10px rgba(20,30,50,.06);
  --shadow-md: 0 8px 28px rgba(20,30,50,.10);
  --shadow-lg: 0 18px 48px rgba(20,30,50,.14);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --transition: all .3s cubic-bezier(.4, 0, .2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }
.section-alt { background: var(--color-surface-soft); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.section-header .eyebrow {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--color-accent); background: rgba(234,165,60,.12);
  padding: 6px 16px; border-radius: var(--radius-full); margin-bottom: 16px;
}
.section-header h2 { font-size: clamp(28px, 4.2vw, 40px); line-height: 1.3; font-weight: 800; color: var(--color-primary); letter-spacing: -.5px; margin-bottom: 14px; }
.section-header p { font-size: 16px; color: var(--color-text-weak); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius-full); font-size: 15px; font-weight: 600; font-family: inherit; cursor: pointer; border: none; transition: var(--transition); }
.btn-primary { background: var(--color-accent); color: var(--color-primary); box-shadow: 0 4px 16px rgba(234,165,60,.35); }
.btn-primary:hover { background: var(--color-accent-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(234,165,60,.45); }
.btn-ghost { background: transparent; color: var(--color-white); border: 1.5px solid rgba(255,255,255,.7); backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255,255,255,.12); transform: translateY(-2px); border-color: #fff; }
.btn-dark { background: var(--color-primary); color: var(--color-white); box-shadow: 0 4px 16px rgba(20,30,50,.2); }
.btn-dark:hover { background: var(--color-primary-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(20,30,50,.3); }
.btn-outline { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-border); }
.btn-outline:hover { border-color: var(--color-primary); background: rgba(20,30,50,.04); transform: translateY(-2px); }
.btn:focus, .btn:active { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* Header / Nav */
.site-header {
  position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px); border-bottom: 1px solid rgba(0,0,0,.06);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--color-primary); white-space: nowrap; }
.brand i { color: var(--color-accent); font-size: 20px; }
.brand-text { letter-spacing: -.3px; }
.brand-text .accent { color: var(--color-accent); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a { padding: 8px 16px; border-radius: var(--radius-full); font-size: 14px; font-weight: 500; color: var(--color-text); transition: var(--transition); }
.main-nav a:hover { background: rgba(20,30,50,.06); color: var(--color-primary); }
.main-nav a.active { background: var(--color-primary); color: #fff; font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-search { display: flex; align-items: center; background: var(--color-surface-soft); border-radius: var(--radius-full); padding: 8px 16px; gap: 8px; border: 1px solid transparent; transition: var(--transition); }
.nav-search i { font-size: 13px; color: var(--color-text-weak); }
.nav-search input { border: none; background: transparent; outline: none; font-size: 14px; width: 120px; font-family: inherit; color: var(--color-text); }
.nav-search input::placeholder { color: var(--color-text-weak); }
.nav-search:focus-within { border-color: var(--color-accent); box-shadow: 0 0 0 4px rgba(234,165,60,.14); background: #fff; }
.nav-cta { padding: 10px 22px; border-radius: var(--radius-full); font-size: 14px; font-weight: 700; background: var(--color-primary); color: #fff; transition: var(--transition); white-space: nowrap; }
.nav-cta:hover { background: var(--color-primary-light); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.mobile-toggle { display: none; width: 44px; height: 44px; border-radius: var(--radius-sm); border: 1px solid var(--color-border); background: transparent; font-size: 20px; align-items: center; justify-content: center; cursor: pointer; color: var(--color-primary); transition: var(--transition); }
.mobile-toggle:hover { background: var(--color-surface-soft); }
.mobile-nav { position: fixed; top: 72px; left: 0; right: 0; z-index: 999; background: var(--color-surface); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-md); padding: 16px 24px 24px; display: none; transform: translateY(-8px); transition: var(--transition); }
.mobile-nav.open { display: block; transform: translateY(0); }
.mobile-nav a { display: block; padding: 14px 16px; border-radius: var(--radius-sm); font-weight: 500; color: var(--color-text); transition: var(--transition); }
.mobile-nav a:hover { background: var(--color-surface-soft); }
.mobile-nav a.active { background: var(--color-primary); color: #fff; }
.mobile-nav .nav-cta-m { display: block; text-align: center; margin-top: 12px; background: var(--color-accent); color: var(--color-primary); font-weight: 700; padding: 14px; border-radius: var(--radius-full); }

/* Hero */
.hero { position: relative; overflow: hidden; background: url('/assets/images/backpic/back-1.png') no-repeat center center / cover; padding: 120px 0 140px; color: #fff; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(to bottom, rgba(20,30,50,.82), rgba(20,30,50,.66)); }
.hero-wave { position: absolute; bottom: -1px; left: 0; width: 100%; line-height: 0; z-index: 2; }
.hw-svg { width: 100%; height: 80px; display: block; }
.hero .container { position: relative; z-index: 3; }
.hero-content { text-align: center; max-width: 780px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255,255,255,.14); backdrop-filter: blur(8px); border: 1px solid rgba(255,255,255,.25); border-radius: var(--radius-full); padding: 8px 20px; font-size: 13px; font-weight: 600; letter-spacing: 1px; color: rgba(255,255,255,.95); margin-bottom: 24px; }
.hero-badge i { color: var(--color-accent-light); }
.hero h1 { font-size: clamp(34px, 6vw, 64px); font-weight: 900; line-height: 1.2; letter-spacing: -1px; margin-bottom: 20px; }
.hero h1 .highlight { color: var(--color-accent-light); position: relative; }
.hero .hero-desc { font-size: 17px; line-height: 1.8; color: rgba(255,255,255,.85); max-width: 600px; margin: 0 auto 40px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-meta { display: flex; justify-content: center; gap: 30px; margin-top: 56px; flex-wrap: wrap; }
.hero-meta-item { text-align: center; padding: 20px 28px; background: rgba(255,255,255,.1); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.16); border-radius: var(--radius-md); min-width: 120px; }
.hero-meta-item strong { display: block; font-size: 28px; font-weight: 800; color: #fff; }
.hero-meta-item span { font-size: 13px; color: rgba(255,255,255,.75); }

/* Features */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-card { background: var(--color-surface); border-radius: var(--radius-md); padding: 36px 28px; border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--color-accent); transform: scaleX(0); transition: var(--transition); transform-origin: left; }
.feature-card:hover::before { transform: scaleX(1); }
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-6px); border-color: rgba(234,165,60,.4); }
.feature-icon { width: 56px; height: 56px; border-radius: 14px; background: linear-gradient(135deg, #f6e5c8, #f8d59e); display: flex; align-items: center; justify-content: center; font-size: 22px; color: var(--color-accent-dark); margin-bottom: 22px; }
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; color: var(--color-primary); }
.feature-card p { font-size: 14px; color: var(--color-text-weak); line-height: 1.7; }

/* Categories */
.category-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.category-card { position: relative; border-radius: var(--radius-lg); overflow: hidden; min-height: 340px; display: flex; align-items: flex-end; box-shadow: var(--shadow-md); transition: var(--transition); }
.category-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-8px); }
.category-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.category-card:hover img { transform: scale(1.06); }
.category-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(20,30,50,.92), rgba(20,30,50,.1) 70%); }
.category-card-content { position: relative; z-index: 2; padding: 32px; width: 100%; }
.category-card-content h3 { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 8px; }
.category-card-content p { font-size: 14px; color: rgba(255,255,255,.85); margin-bottom: 20px; max-width: 320px; line-height: 1.6; }
.category-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 700; color: var(--color-accent-light); background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.2); padding: 6px 14px; border-radius: var(--radius-full); margin-bottom: 12px; }
.category-card .btn { padding: 10px 24px; font-size: 14px; }

/* News */
.news-section { background: var(--color-surface-soft); }
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-card { display: flex; flex-direction: column; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 26px; transition: var(--transition); height: 100%; }
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: rgba(234,165,60,.3); }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.news-cat { font-size: 12px; font-weight: 700; color: var(--color-accent-dark); background: rgba(234,165,60,.14); padding: 4px 12px; border-radius: var(--radius-full); }
.news-date { font-size: 12px; color: var(--color-text-weak); }
.news-card h4 { font-size: 16px; font-weight: 700; line-height: 1.5; color: var(--color-text); margin-bottom: 8px; transition: var(--transition); }
.news-card:hover h4 { color: var(--color-primary); }
.news-card .news-excerpt { font-size: 14px; color: var(--color-text-weak); line-height: 1.7; -webkit-line-clamp: 2; display: -webkit-box; -webkit-box-orient: vertical; overflow: hidden; }
.news-card .news-bottom { margin-top: auto; padding-top: 14px; display: flex; align-items: center; justify-content: space-between; }
.news-card .read-link { font-size: 14px; font-weight: 600; color: var(--color-primary); transition: var(--transition); }
.news-card .read-link:hover { color: var(--color-accent-dark); gap: 4px; }
.news-card .read-link i { font-size: 12px; }
.news-empty { grid-column: 1 / -1; text-align: center; padding: 60px 24px; color: var(--color-text-weak); background: var(--color-surface); border-radius: var(--radius-md); }

/* Stats / Flow */
.stats-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-bottom: 64px; }
.stat-item { text-align: center; padding: 32px 16px; background: var(--color-surface); border-radius: var(--radius-md); border: 1px solid var(--color-border); box-shadow: var(--shadow-sm); transition: var(--transition); }
.stat-item:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.stat-item strong { display: block; font-size: 36px; font-weight: 900; color: var(--color-primary); line-height: 1.2; }
.stat-item span { font-size: 14px; color: var(--color-text-weak); }
.flow-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.flow-step { text-align: center; padding: 32px 20px; position: relative; }
.flow-step .step-num { width: 48px; height: 48px; border-radius: 50%; background: var(--color-primary); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 800; margin-bottom: 16px; box-shadow: 0 6px 18px rgba(20,30,50,.25); position: relative; z-index: 2; }
.flow-step:nth-child(odd) .step-num { background: var(--color-accent); color: var(--color-primary); box-shadow: 0 6px 18px rgba(234,165,60,.3); }
.flow-step h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }
.flow-step p { font-size: 13px; color: var(--color-text-weak); line-height: 1.6; max-width: 200px; margin: 0 auto; }
.flow-step::after { content: ''; position: absolute; top: 56px; left: calc(50% + 36px); width: calc(100% - 72px); height: 2px; background: var(--color-border); z-index: 1; }
.flow-step:last-child::after { display: none; }

/* FAQ */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); margin-bottom: 16px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: rgba(234,165,60,.3); box-shadow: var(--shadow-sm); }
.faq-item-header { display: flex; align-items: center; justify-content: space-between; padding: 22px 26px; cursor: pointer; font-size: 16px; font-weight: 600; color: var(--color-primary); transition: var(--transition); }
.faq-item-header:hover { background: rgba(234,165,60,.04); }
.faq-item-header .fa-icon { color: var(--color-accent); font-size: 18px; transition: var(--transition); }
.faq-item-body { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-item-body-inner { padding: 0 26px 22px; font-size: 14px; color: var(--color-text-weak); line-height: 1.8; }
.faq-item.open .faq-item-header .fa-icon { transform: rotate(180deg); }
.faq-item.open .faq-item-body { max-height: 240px; }

/* CTA */
.cta-section { position: relative; overflow: hidden; background: var(--color-primary); color: #fff; padding: 100px 0; }
.cta-section::before { content: ''; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') no-repeat center center / cover; opacity: .12; }
.cta-section::after { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(to right, transparent, rgba(234,165,60,.6), transparent); }
.cta-content { position: relative; z-index: 2; text-align: center; max-width: 680px; margin: 0 auto; }
.cta-content h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 16px; letter-spacing: -.5px; }
.cta-content p { font-size: 16px; color: rgba(255,255,255,.75); margin-bottom: 36px; line-height: 1.8; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.cta-note { margin-top: 24px; font-size: 13px; color: rgba(255,255,255,.5); }

/* Footer */
.site-footer { background: #0e1626; color: rgba(255,255,255,.65); padding: 60px 0 0; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 44px; }
.footer-brand .brand-text { color: #fff; margin-bottom: 14px; display: block; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-col h5 { color: #fff; font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 18px; }
.footer-col a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255,255,255,.55); transition: var(--transition); }
.footer-col a:hover { color: var(--color-accent); transform: translateX(4px); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.4); flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: rgba(255,255,255,.5); transition: var(--transition); }
.footer-bottom a:hover { color: var(--color-accent); }
.footer-icp a { margin-left: 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .nav-search { display: none; }
  .features-grid, .category-grid { gap: 20px; }
  .footer-top { gap: 32px; }
}
@media (max-width: 768px) {
  .service-grid, .features-grid, .category-grid, .news-grid, .stats-row, .flow-row { grid-template-columns: 1fr; }
  .flow-row { gap: 0; }
  .flow-step::after { display: none; }
  .flow-step { padding: 24px 16px; }
  .main-nav, .nav-cta { display: none; }
  .mobile-toggle { display: flex; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .section { padding: 56px 0; }
  .hero { padding: 80px 0 100px; }
  .hero-meta { gap: 14px; }
  .hero-meta-item { padding: 14px 16px; min-width: 90px; }
  .hero-meta-item strong { font-size: 22px; }
  .stat-item strong { font-size: 28px; }
  .footer-bottom { justify-content: center; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 20px; }
  .brand-text { font-size: 17px; }
  .hero-buttons .btn { width: 100%; justify-content: center; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
}

/* roulang page: category1 */
/* ===== 设计变量 ===== */
:root {
  --color-primary: #4f46e5;
  --color-primary-dark: #3730a3;
  --color-secondary: #7c3aed;
  --color-accent: #f59e0b;
  --color-bg: #f8fafc;
  --color-bg-alt: #eef2ff;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-lighter: #94a3b8;
  --color-border: #e2e8f0;
  --color-white: #ffffff;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 28px;
  --shadow: 0 4px 28px rgba(2, 6, 23, 0.07);
  --shadow-lg: 0 16px 48px rgba(2, 6, 23, 0.12);
  --shadow-primary: 0 8px 30px rgba(79, 70, 229, 0.28);
  --space-section: 96px;
  --space-section-sm: 64px;
  --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

ul, ol, li {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-head);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.5em;
}

button, input, select, textarea {
  font-family: var(--font-body);
  font-size: inherit;
  outline: none;
}

:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.4);
  outline-offset: 2px;
}

/* ===== 容器 ===== */
.container-custom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ===== 深色背景 ===== */
.section-dark {
  background: var(--color-bg-dark);
  color: #e2e8f0;
}
.section-dark h2, .section-dark h3, .section-dark h4 {
  color: #ffffff;
}
.section-dark .section-desc {
  color: #94a3b8;
}

/* ===== Header / 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(2, 6, 23, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}
.brand-text {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
  white-space: nowrap;
}
.brand-text span {
  color: var(--color-primary);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light);
  transition: all 0.25s ease;
  position: relative;
}
.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}
.main-nav a.active {
  color: var(--color-primary);
  background: var(--color-bg-alt);
  font-weight: 600;
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  border-radius: 2px;
  background: var(--color-primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-search {
  display: flex;
  align-items: center;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 8px 6px 16px;
  width: 200px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.nav-search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}
.nav-search input {
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--color-text);
  width: 100%;
}
.nav-search input::placeholder {
  color: var(--color-text-lighter);
}
.nav-search .search-btn {
  border: none;
  background: var(--color-primary);
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 13px;
  transition: background 0.25s ease, transform 0.15s ease;
}
.nav-search .search-btn:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
}
.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 9px 20px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.25);
}
.header-cta:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  font-size: 20px;
  color: var(--color-text);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* 移动端导航抽屉 */
.mobile-menu {
  display: none;
  background: var(--color-white);
  border-top: 1px solid var(--color-border);
  padding: 16px 0;
  box-shadow: 0 12px 30px rgba(2, 6, 23, 0.1);
}
.mobile-menu.open {
  display: block;
}
.mobile-menu .mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu .mobile-nav-list a {
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}
.mobile-menu .mobile-nav-list a:hover,
.mobile-menu .mobile-nav-list a.active {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}
.mobile-menu .mobile-nav-list a i {
  width: 24px;
  text-align: center;
  margin-right: 8px;
}

/* ===== Hero ===== */
.page-hero {
  position: relative;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(30, 27, 75, 0.82) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 100px 0 80px;
  color: #fff;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 70, 229, 0.35) 0%, transparent 70%);
}
.page-hero::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.2) 0%, transparent 70%);
}
.page-hero .hero-content {
  position: relative;
  z-index: 2;
}
.page-hero .breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 13px;
  margin-bottom: 24px;
}
.page-hero .breadcrumb a {
  color: #c7d2fe;
}
.page-hero .breadcrumb a:hover {
  color: #fff;
}
.page-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #fff;
  letter-spacing: -0.02em;
}
.page-hero h1 span {
  color: #a5b4fc;
}
.page-hero .hero-sub {
  font-size: 17px;
  line-height: 1.7;
  color: #cbd5e1;
  max-width: 640px;
  margin-bottom: 32px;
}
.page-hero .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 13px;
  color: #e2e8f0;
  backdrop-filter: blur(6px);
}
.page-hero .hero-tag i {
  color: #a5b4fc;
}

/* ===== 板块通用 ===== */
.section {
  padding: var(--space-section) 0;
  position: relative;
}
.section-alt {
  background: var(--color-bg-alt);
}
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-header .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-primary);
  background: rgba(79, 70, 229, 0.1);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.section-header .section-desc {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== 双栏图文区块 ===== */
.portal-overview {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.portal-overview .overview-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}
.portal-overview .overview-img img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.portal-overview .overview-img:hover img {
  transform: scale(1.03);
}
.overview-content .content-list {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.overview-content .content-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all 0.25s ease;
}
.overview-content .content-item:hover {
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: var(--shadow);
}
.content-item .item-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  color: var(--color-primary);
  border-radius: 10px;
  font-size: 16px;
}
.content-item h5 {
  font-size: 16px;
  margin-bottom: 4px;
}
.content-item p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 入口卡片 ===== */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 20px;
}
.entry-card {
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.entry-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.2);
}
.entry-card .card-img {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.entry-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.entry-card:hover .card-img img {
  transform: scale(1.06);
}
.entry-card .card-img .img-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.entry-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.entry-card .card-body h3 {
  font-size: 19px;
  margin-bottom: 8px;
}
.entry-card .card-body p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
  flex: 1;
}
.entry-card .card-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--color-text-light);
}
.card-footer .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  display: inline-block;
  margin-right: 6px;
}
.card-footer a {
  font-weight: 600;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ===== 账号流程 ===== */
.steps-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: left;
  border: 1px solid var(--color-border);
  position: relative;
  transition: all 0.3s ease;
}
.step-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.step-card::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  color: rgba(79, 70, 229, 0.1);
  font-family: var(--font-head);
}
.step-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-primary);
}
.step-card h4 {
  font-size: 18px;
  margin-bottom: 8px;
}
.step-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* ===== 安全提示 ===== */
.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.security-card {
  display: flex;
  gap: 18px;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 26px;
  border: 1px solid var(--color-border);
  transition: all 0.25s ease;
}
.security-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(245, 158, 11, 0.3);
}
.security-card .sec-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: rgba(245, 158, 11, 0.12);
  color: #d97706;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}
.security-card h4 {
  font-size: 17px;
  margin-bottom: 6px;
}
.security-card p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.65;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
}
.faq-item:hover {
  border-color: rgba(79, 70, 229, 0.25);
  box-shadow: var(--shadow);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  position: relative;
  transition: all 0.2s ease;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .faq-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-primary);
  transition: all 0.3s ease;
}
.faq-item[open] summary .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: #fff;
}
.faq-item .faq-body {
  padding: 0 24px 20px;
}
.faq-item .faq-body p {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.75;
  padding-left: 50px;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4338ca 100%);
  padding: 80px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity: 0.12;
}
.cta-section .cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}
.cta-section h2 {
  color: #fff;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}
.cta-section p {
  color: #c7d2fe;
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 32px;
}
.cta-buttons {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
}
.btn-white {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.btn-white:hover {
  background: #f1f5f9;
  color: var(--color-primary-dark);
  transform: translateY(-2px);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-2px);
  border-color: #fff;
}

/* ===== Footer ===== */
.site-footer {
  background: #0b1120;
  color: #94a3b8;
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 360px;
  color: #7c8ba1;
}
.footer-col h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-col a {
  display: block;
  color: #7c8ba1;
  font-size: 14px;
  padding: 6px 0;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-col a:hover {
  color: #a5b4fc;
  padding-left: 4px;
}
.footer-col a i {
  width: 18px;
  margin-right: 4px;
  font-size: 12px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 13px;
  color: #5b6b82;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-icp {
  display: flex;
  gap: 20px;
}
.footer-icp a {
  color: #5b6b82;
  font-size: 13px;
  transition: color 0.2s ease;
}
.footer-icp a:hover {
  color: #a5b4fc;
}

/* ===== 动效 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  :root {
    --space-section: 74px;
  }
  .entry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nav-search {
    width: 160px;
  }
  .header-cta span.cta-text {
    display: none;
  }
}

@media screen and (max-width: 768px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    display: none;
  }
  .nav-search {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .header-cta {
    padding: 8px 16px;
  }
  .page-hero {
    padding: 70px 0 56px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .page-hero .hero-sub {
    font-size: 15px;
  }
  .section-header h2 {
    font-size: 28px;
  }
  .section-header .section-desc {
    font-size: 15px;
  }
  .portal-overview {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .portal-overview .overview-img img {
    height: 260px;
  }
  .entry-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .security-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .faq-item summary {
    padding: 16px 18px;
    font-size: 15px;
  }
  .faq-item .faq-body {
    padding: 0 18px 16px;
  }
  .faq-item .faq-body p {
    padding-left: 0;
    font-size: 14px;
  }
  .cta-section h2 {
    font-size: 28px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media screen and (max-width: 520px) {
  :root {
    --space-section: 56px;
  }
  .section-header {
    margin-bottom: 36px;
  }
  .entry-card .card-img {
    height: 150px;
  }
  .step-card {
    padding: 24px;
  }
  .security-card {
    flex-direction: column;
    gap: 12px;
  }
  .header-cta {
    display: none;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .section-header h2 {
    font-size: 24px;
  }
}

/* roulang page: article */
:root {
  --color-primary: #122a4a;
  --color-primary-soft: #1d3a63;
  --color-primary-muted: #284b7a;
  --color-accent: #f0a742;
  --color-accent-dark: #d88a22;
  --color-accent-soft: #fde8c8;
  --color-bg: #f7f6f2;
  --color-bg-alt: #efede8;
  --color-surface: #ffffff;
  --color-text: #1c1f24;
  --color-text-weak: #667085;
  --color-border: #e5e2dc;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 8px rgba(18, 42, 74, 0.06);
  --shadow-md: 0 12px 28px rgba(18, 42, 74, 0.10);
  --shadow-lg: 0 24px 60px rgba(18, 42, 74, 0.14);
  --space-section: 110px;
  --space-section-md: 80px;
  --transition: all 0.25s ease;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent); }
button, input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--space-section) 0; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  letter-spacing: 0.02em;
}
.btn:focus-visible { outline: 3px solid rgba(240, 167, 66, 0.45); outline-offset: 2px; }
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 6px 16px rgba(18, 42, 74, 0.18); }
.btn-primary:hover { background: var(--color-primary-soft); color: #fff; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(18, 42, 74, 0.22); }
.btn-accent { background: var(--color-accent); color: #122a4a; box-shadow: 0 6px 16px rgba(240, 167, 66, 0.3); }
.btn-accent:hover { background: var(--color-accent-dark); color: #fff; transform: translateY(-2px); }
.btn-light { background: #fff; color: var(--color-primary); box-shadow: 0 8px 24px rgba(0,0,0,0.08); }
.btn-light:hover { background: var(--color-accent-soft); color: var(--color-primary); transform: translateY(-2px); }
.btn-lg { padding: 16px 38px; font-size: 17px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* 头部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo i { font-size: 28px; color: var(--color-accent); }
.brand-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--color-primary);
  white-space: nowrap;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--color-text-weak);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}
.main-nav a:hover { color: var(--color-primary); background: var(--color-accent-soft); }
.main-nav a.active { color: var(--color-primary); background: var(--color-accent-soft); font-weight: 700; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header-search {
  position: relative;
  display: flex;
  align-items: center;
}
.header-search i {
  position: absolute;
  left: 14px;
  color: var(--color-text-weak);
  font-size: 14px;
  pointer-events: none;
}
.header-search input {
  width: 190px;
  padding: 9px 14px 9px 36px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg);
  font-size: 14px;
  transition: var(--transition);
}
.header-search input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(240,167,66,0.15);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  transition: var(--transition);
}
.nav-toggle:hover { border-color: var(--color-accent); }
.nav-toggle span { width: 18px; height: 2px; background: var(--color-primary); border-radius: 2px; transition: var(--transition); }
.nav-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.mobile-menu {
  display: none;
  padding: 16px 24px 24px;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  padding: 13px 14px;
  border-radius: 10px;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 6px;
  transition: var(--transition);
}
.mobile-menu a:hover { background: var(--color-accent-soft); color: var(--color-primary); }
.mobile-menu .btn { margin-top: 8px; }

/* 文章 Hero */
.article-hero {
  position: relative;
  padding: 92px 0 84px;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, rgba(18,42,74,0.94) 20%, rgba(29,58,99,0.88) 60%, rgba(18,42,74,0.75) 100%);
}
.article-hero .container { position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  margin-bottom: 22px;
  color: rgba(255,255,255,0.75);
}
.breadcrumb a { color: rgba(255,255,255,0.85); font-weight: 500; }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .current { color: var(--color-accent); }
.article-hero h1 {
  font-size: 42px;
  line-height: 1.3;
  font-weight: 800;
  margin: 0 0 20px;
  max-width: 840px;
  letter-spacing: -0.015em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
}
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--color-accent); }

/* 正文区 */
.article-body-section { padding: 70px 0 60px; background: var(--color-bg); }
.article-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  max-width: 920px;
  margin: 0 auto;
}
.article-cover img { width: 100%; height: 420px; object-fit: cover; }
.article-content { padding: 48px 56px 36px; }
.article-content p { margin: 0 0 1.4em; color: #333; font-size: 16.5px; line-height: 1.85; }
.article-content h2 { font-size: 26px; margin: 1.8em 0 0.7em; color: var(--color-primary); }
.article-content h3 { font-size: 21px; margin: 1.5em 0 0.55em; color: var(--color-primary); }
.article-content ul, .article-content ol { margin: 0 0 1.4em; padding-left: 22px; }
.article-content li { margin-bottom: 0.5em; }
.article-content img { border-radius: var(--radius-md); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
.article-content blockquote {
  border-left: 4px solid var(--color-accent);
  background: var(--color-accent-soft);
  padding: 16px 22px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 1.6em 0;
  color: var(--color-primary);
  font-weight: 500;
}
.article-content a { color: var(--color-accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--color-primary); }
.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 22px 56px 34px;
  border-top: 1px solid var(--color-border);
}
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
}
.article-share { display: flex; gap: 8px; }
.share-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  color: var(--color-text-weak);
  font-size: 15px;
  background: #fff;
  transition: var(--transition);
}
.share-btn:hover { background: var(--color-primary); color: #fff; border-color: var(--color-primary); transform: translateY(-2px); }

/* 未找到 */
.not-found { text-align: center; padding: 100px 60px; }
.not-found-icon { font-size: 56px; color: var(--color-accent); margin-bottom: 20px; }
.not-found h2 { font-size: 30px; color: var(--color-primary); margin-bottom: 10px; }
.not-found p { color: var(--color-text-weak); margin-bottom: 28px; }

/* 板块头部 */
.section-head { text-align: center; max-width: 680px; margin: 0 auto 50px; }
.section-badge {
  display: inline-block;
  padding: 6px 18px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-head h2 { font-size: 34px; color: var(--color-primary); margin: 0 0 12px; font-weight: 800; letter-spacing: -0.01em; }
.section-head p { color: var(--color-text-weak); font-size: 16px; margin: 0; }

/* 相关推荐 */
.related-section { padding: var(--space-section) 0; background: #fff; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.related-card {
  display: block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.related-card:hover h3 { color: var(--color-accent-dark); }
.related-thumb { position: relative; overflow: hidden; height: 180px; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(18,42,74,0.85);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(6px);
}
.related-body { padding: 20px 20px 22px; }
.related-body h3 { font-size: 17px; font-weight: 700; margin: 0 0 8px; color: var(--color-text); line-height: 1.45; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-body p { font-size: 14px; color: var(--color-text-weak); margin: 0 0 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-date { font-size: 13px; color: var(--color-text-weak); display: inline-flex; align-items: center; gap: 6px; }
.related-date i { color: var(--color-accent); }
.empty-tip { grid-column: 1 / -1; text-align: center; padding: 60px 20px; color: var(--color-text-weak); background: var(--color-bg); border-radius: var(--radius-md); }

/* 分类指引 */
.categories-section { padding: var(--space-section) 0; background: var(--color-bg-alt); }
.category-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.category-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 30px 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.category-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}
.category-icon {
  width: 58px;
  height: 58px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  font-size: 24px;
}
.category-info { flex: 1; }
.category-info h3 { font-size: 19px; font-weight: 700; margin: 0 0 6px; color: var(--color-primary); }
.category-info p { font-size: 14px; color: var(--color-text-weak); margin: 0; }
.category-arrow {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-primary);
  transition: var(--transition);
}
.category-card:hover .category-arrow { background: var(--color-accent); color: #fff; transform: translateX(4px); }

/* FAQ */
.faq-section { padding: var(--space-section) 0; background: var(--color-bg); }
.faq-list { max-width: 820px; margin: 0 auto; }
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 15px;
  color: var(--color-accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--color-accent-dark); }
.faq-item p { padding: 0 28px 22px; margin: 0; color: var(--color-text-weak); font-size: 15px; }

/* CTA */
.cta-section { padding: 80px 0; background: linear-gradient(130deg, var(--color-primary), var(--color-primary-soft)); }
.cta-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: 24px;
  padding: 46px 54px;
  backdrop-filter: blur(8px);
}
.cta-info h2 { font-size: 30px; color: #fff; margin: 0 0 10px; font-weight: 800; }
.cta-info p { color: rgba(255,255,255,0.75); margin: 0; font-size: 16px; }

/* 页脚 */
.site-footer { background: var(--color-primary); color: rgba(255,255,255,0.72); padding: 70px 0 0; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 50px; padding-bottom: 48px; }
.footer-brand p { font-size: 14.5px; line-height: 1.7; margin: 16px 0 0; max-width: 360px; }
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-col h5 { color: #fff; font-size: 16px; margin: 0 0 12px; font-weight: 700; }
.footer-col a { color: rgba(255,255,255,0.68); font-size: 14.5px; }
.footer-col a:hover { color: var(--color-accent); padding-left: 6px; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 22px 0;
  font-size: 14px;
  flex-wrap: wrap;
}
.footer-icp { display: flex; gap: 18px; }
.footer-icp a { color: rgba(255,255,255,0.6); }
.footer-icp a:hover { color: var(--color-accent); }

/* 响应式 */
@media screen and (max-width: 1024px) {
  .header-search input { width: 150px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .category-cards { grid-template-columns: 1fr; }
  .article-hero h1 { font-size: 36px; }
}
@media screen and (max-width: 768px) {
  :root { --space-section: 70px; }
  .header-search { display: none; }
  .header-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .main-nav { display: none; }
  .article-hero { padding: 64px 0 54px; }
  .article-hero h1 { font-size: 30px; }
  .article-content { padding: 32px 26px 28px; }
  .article-footer { padding: 20px 26px 28px; }
  .article-cover img { height: 320px; }
  .cta-box { flex-direction: column; text-align: center; padding: 34px 26px; }
  .footer-top { grid-template-columns: 1fr; gap: 36px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .related-grid { grid-template-columns: 1fr; }
  .category-card { padding: 24px 20px; flex-wrap: wrap; }
  .section-head h2 { font-size: 27px; }
}
@media screen and (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand-text { font-size: 17px; }
  .article-hero h1 { font-size: 24px; }
  .article-meta { gap: 12px; }
  .article-cover img { height: 240px; }
  .article-content { padding: 26px 20px 22px; }
  .related-thumb { height: 190px; }
  .cta-box { padding: 28px 20px; }
  .cta-info h2 { font-size: 24px; }
  .faq-item summary { padding: 18px 20px; font-size: 15px; }
  .faq-item p { padding: 0 20px 20px; }
  .not-found { padding: 60px 30px; }
}

/* roulang page: category2 */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #7c3aed;
  --color-accent: #f59e0b;
  --color-bg: #f8fafc;
  --color-white: #ffffff;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --color-dark: #0f172a;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.10);
  --transition: .25s ease-in-out;
  --space-section: 90px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition), opacity var(--transition); }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; width: 100%; }

/* Header Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(226,232,240,.8);
  box-shadow: 0 1px 12px rgba(15,23,42,.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand-logo { flex-shrink: 0; }
.brand-logo a {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: .5px;
  display: flex;
  align-items: center;
  gap: 2px;
}
.brand-logo .accent {
  color: var(--color-primary);
}
.brand-logo .highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.main-nav a {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-light);
  transition: all var(--transition);
  position: relative;
}
.main-nav a:hover {
  color: var(--color-primary);
  background: rgba(37,99,235,.06);
}
.main-nav a.active {
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  box-shadow: 0 4px 14px rgba(37,99,235,.28);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: #f1f5f9;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  padding: 0 16px;
  height: 40px;
  transition: all var(--transition);
}
.search-box:focus-within {
  background: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,.12);
}
.search-box i {
  color: var(--color-text-light);
  font-size: 14px;
  margin-right: 8px;
}
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  width: 140px;
  color: var(--color-text);
}
.search-box input::placeholder { color: #94a3b8; }
.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(37,99,235,.3);
  transition: all var(--transition);
  border: none;
  cursor: pointer;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(37,99,235,.4);
  color: #fff;
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--color-text);
  cursor: pointer;
  padding: 6px;
}

/* Hero / Banner */
.page-banner {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding: 120px 0 100px;
  text-align: center;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,23,42,.88), rgba(37,99,235,.72));
  z-index: 1;
}
.page-banner .container { position: relative; z-index: 2; }
.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: var(--radius-full);
  padding: 7px 20px;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}
.banner-badge i { color: var(--color-accent); }
.page-banner h1 {
  font-size: 52px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-shadow: 0 4px 20px rgba(0,0,0,.2);
}
.page-banner h1 span {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-banner p {
  font-size: 18px;
  color: rgba(255,255,255,.9);
  max-width: 650px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.banner-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.banner-stats .stat {
  text-align: center;
  color: #fff;
}
.banner-stats .stat .num {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
}
.banner-stats .stat .label {
  font-size: 14px;
  opacity: .8;
  margin-top: 4px;
}

/* Section general */
.section { padding: var(--space-section) 0; }
.section-bg-alt { background: #fff; }
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}
.section-head .tag {
  display: inline-block;
  background: rgba(37,99,235,.08);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--color-text);
}
.section-head h2 span { color: var(--color-primary); }
.section-head p {
  font-size: 16px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Activity Cards */
.activity-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.activity-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.activity-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(37,99,235,.25);
}
.activity-card .card-img {
  position: relative;
  overflow: hidden;
  height: 200px;
}
.activity-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.activity-card:hover .card-img img { transform: scale(1.06); }
.activity-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,23,42,.45), transparent 60%);
}
.activity-card .tag-float {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: linear-gradient(135deg, var(--color-accent), #f97316);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(245,158,11,.35);
}
.activity-card .card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.activity-card .card-body .date-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-light);
  margin-bottom: 10px;
}
.activity-card .card-body .date-line i { color: var(--color-primary); }
.activity-card .card-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.45;
  color: var(--color-text);
  transition: color var(--transition);
}
.activity-card:hover .card-body h3 { color: var(--color-primary); }
.activity-card .card-body p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  flex: 1;
}
.activity-card .card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-top: 1px solid #f1f5f9;
}
.activity-card .card-footer .btn-text {
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition), color var(--transition);
}
.activity-card .card-footer .btn-text:hover { gap: 10px; color: var(--color-primary-dark); }
.activity-card .card-footer .status {
  font-size: 13px;
  color: #16a34a;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.activity-card .card-footer .status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #22c55e;
  border-radius: 50%;
  display: inline-block;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* News List */
.news-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.news-item {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}
.news-item:first-child { padding-top: 0; }
.news-item:last-child { border-bottom: none; }
.news-item .news-date {
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, rgba(37,99,235,.08), rgba(124,58,237,.08));
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1px solid rgba(37,99,235,.12);
}
.news-item .news-date .day {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.news-item .news-date .month {
  font-size: 11px;
  color: var(--color-text-light);
  font-weight: 500;
  margin-top: 3px;
}
.news-item .news-content h4 {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 6px;
  line-height: 1.5;
  transition: color var(--transition);
}
.news-item:hover .news-content h4 { color: var(--color-primary); }
.news-item .news-content p {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-aside {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  padding: 36px;
  position: sticky;
  top: 96px;
}
.news-aside h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--color-text);
}
.news-aside > p {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 28px;
  line-height: 1.7;
}
.hot-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.hot-list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 14px 0;
  border-bottom: 1px dashed var(--color-border);
}
.hot-list li:last-child { border-bottom: none; }
.hot-list .rank {
  font-size: 20px;
  font-weight: 800;
  color: #cbd5e1;
  line-height: 1.2;
  min-width: 30px;
  font-style: italic;
}
.hot-list li:nth-child(1) .rank { color: var(--color-accent); }
.hot-list li:nth-child(2) .rank { color: #94a3b8; }
.hot-list li:nth-child(3) .rank { color: #d97706; }
.hot-list .hot-text h5 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  line-height: 1.5;
  transition: color var(--transition);
}
.hot-list li:hover .hot-text h5 { color: var(--color-primary); }
.hot-list .hot-text span {
  font-size: 13px;
  color: var(--color-text-light);
}

/* Strategy Section */
.strategy-section {
  background: var(--color-dark);
  position: relative;
  overflow: hidden;
}
.strategy-section::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37,99,235,.25), transparent 60%);
  pointer-events: none;
}
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
  z-index: 2;
}
.strategy-card {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-lg);
  padding: 32px;
  backdrop-filter: blur(8px);
  transition: all var(--transition);
}
.strategy-card:hover {
  background: rgba(255,255,255,.10);
  border-color: rgba(37,99,235,.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,.3);
}
.strategy-card .step-num {
  font-size: 36px;
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1;
}
.strategy-card h4 {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}
.strategy-card p {
  color: rgba(255,255,255,.7);
  font-size: 14px;
  line-height: 1.75;
}
.section-head.light h2 { color: #fff; }
.section-head.light p { color: rgba(255,255,255,.7); }
.section-head.light .tag {
  background: rgba(255,255,255,.1);
  color: #60a5fa;
}

/* Data Section */
.data-section {
  background: linear-gradient(135deg, #f8fafc 0%, #eff6ff 100%);
}
.data-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.data-card {
  text-align: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.data-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.data-card .data-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #fff;
}
.data-card:nth-child(1) .data-icon { background: linear-gradient(135deg, #2563eb, #60a5fa); }
.data-card:nth-child(2) .data-icon { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.data-card:nth-child(3) .data-icon { background: linear-gradient(135deg, #f59e0b, #fbbf24); }
.data-card:nth-child(4) .data-icon { background: linear-gradient(135deg, #10b981, #34d399); }
.data-card .data-num {
  font-size: 38px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.1;
  margin-bottom: 6px;
}
.data-card .data-label {
  font-size: 14px;
  color: var(--color-text-light);
  font-weight: 500;
}

/* FAQ */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover {
  border-color: rgba(37,99,235,.3);
  box-shadow: var(--shadow-md);
}
.faq-item summary {
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--color-text);
  transition: color var(--transition);
}
.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--color-primary);
  font-weight: 400;
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover { color: var(--color-primary); }
.faq-item .faq-answer {
  padding: 0 28px 24px;
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.8;
}

/* CTA */
.cta-section {
  background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  position: relative;
  padding: 90px 0;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(15,23,42,.9), rgba(37,99,235,.8));
}
.cta-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: #fff;
  max-width: 700px;
  margin: 0 auto;
}
.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.3;
}
.cta-content p {
  font-size: 17px;
  opacity: .9;
  margin-bottom: 32px;
  line-height: 1.7;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-primary {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  color: #0f172a;
  box-shadow: 0 4px 20px rgba(245,158,11,.35);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(245,158,11,.45);
  color: #0f172a;
}
.btn-outline {
  background: transparent;
  border: 2px solid rgba(255,255,255,.6);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255,255,255,.15);
  border-color: #fff;
  transform: translateY(-3px);
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: rgba(255,255,255,.75);
  padding: 70px 0 28px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
  max-width: 340px;
  color: rgba(255,255,255,.6);
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}
.footer-col h5 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  padding: 6px 0;
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--color-accent); padding-left: 4px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 28px;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
  gap: 12px;
}
.footer-icp a {
  color: rgba(255,255,255,.45);
  margin-left: 16px;
  font-size: 13px;
}
.footer-icp a:hover { color: #fff; }

/* Responsive */
@media screen and (max-width: 1024px) {
  .main-nav { gap: 4px; }
  .main-nav a { padding: 8px 12px; font-size: 14px; }
  .search-box input { width: 100px; }
  .activity-grid { grid-template-columns: repeat(2, 1fr); }
  .news-wrap { grid-template-columns: 1fr; gap: 40px; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
}
@media screen and (max-width: 768px) {
  .header-inner { height: 64px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 16px 24px 24px;
    gap: 6px;
    box-shadow: 0 20px 40px rgba(0,0,0,.12);
    border-radius: 0 0 20px 20px;
  }
  .main-nav.open { display: flex; }
  .main-nav a { width: 100%; text-align: center; padding: 12px; }
  .mobile-toggle { display: block; }
  .search-box { display: none; }
  .nav-cta { padding: 9px 16px; font-size: 13px; }
  .page-banner { padding: 90px 0 70px; }
  .page-banner h1 { font-size: 32px; }
  .page-banner p { font-size: 16px; }
  .activity-grid { grid-template-columns: 1fr; }
  .strategy-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { --space-section: 60px; }
  .section-head h2 { font-size: 28px; }
  .cta-content h2 { font-size: 28px; }
}
@media screen and (max-width: 520px) {
  .container { padding: 0 16px; }
  .banner-stats { gap: 24px; }
  .data-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; gap: 12px; }
  .news-aside { padding: 24px; }
  .nav-cta { display: none; }
  .page-banner h1 { font-size: 26px; }
}