/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #175cd3;
  --primary-dark: #0e3d8f;
  --primary-light: #eef4ff;
  --accent: #ff6b35;
  --accent-light: #fff1e8;
  --text-main: #131f33;
  --text-muted: #5f6c81;
  --bg-body: #ffffff;
  --bg-soft: #f5f8fd;
  --bg-dark: #0d1b2e;
  --border: #e4e9f2;
  --white: #ffffff;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(13, 27, 46, 0.06);
  --shadow-md: 0 6px 20px rgba(13, 27, 46, 0.09);
  --shadow-lg: 0 16px 44px rgba(13, 27, 46, 0.13);
  --transition: 0.25s ease;
  --container-width: 1200px;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-body);
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button, input, textarea, select { font: inherit; border: none; outline: none; color: inherit; }
button { cursor: pointer; background: none; }
ul, ol { list-style: none; }
::selection { background: var(--primary); color: #fff; }

/* ===== 容器 ===== */
.container { width: min(var(--container-width), 92%); margin: 0 auto; }

/* ===== 通用板块 ===== */
.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: var(--primary);
  background: var(--primary-light); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 16px; letter-spacing: 0.04em;
}
.section-title { font-size: clamp(1.75rem, 2.6vw, 2.35rem); line-height: 1.3; font-weight: 800; color: var(--text-main); letter-spacing: -0.01em; }
.section-sub { color: var(--text-muted); font-size: 1.05rem; margin-top: 12px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px;
  font-weight: 700; font-size: 15px;
  transition: all var(--transition);
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(23, 92, 211, 0.28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(23, 92, 211, 0.36); }
.btn-secondary { background: rgba(255, 255, 255, 0.12); color: #fff; border: 1px solid rgba(255, 255, 255, 0.5); backdrop-filter: blur(6px); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: 0 4px 16px rgba(255, 107, 53, 0.3); }
.btn-accent:hover { filter: brightness(0.96); transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid rgba(23, 92, 211, 0.4); outline-offset: 2px; }

/* ===== 徽章 ===== */
.badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px;
  background: var(--primary-light); color: var(--primary);
}
.badge-orange { background: var(--accent-light); color: var(--accent); }
.badge-green { background: #e7f9f0; color: #0b8a5a; }
.badge-white { background: rgba(255, 255, 255, 0.18); color: #fff; border: 1px solid rgba(255, 255, 255, 0.2); }

/* ===== 顶部导航 ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; gap: 24px; height: 72px; }
.logo { font-size: 24px; font-weight: 900; color: var(--text-main); letter-spacing: -0.02em; display: flex; align-items: baseline; gap: 3px; white-space: nowrap; }
.logo span { color: var(--primary); }
.nav-search { flex: 1; max-width: 460px; margin: 0 auto; position: relative; }
.nav-search input {
  width: 100%; height: 42px;
  border: 1px solid var(--border); border-radius: 999px;
  padding: 0 48px 0 18px;
  font-size: 14px; color: var(--text-main);
  background: var(--bg-soft);
  transition: all var(--transition);
}
.nav-search input::placeholder { color: #9aa8bd; }
.nav-search input:focus { background: #fff; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(23, 92, 211, 0.1); }
.nav-search button {
  position: absolute; top: 50%; right: 4px; transform: translateY(-50%);
  width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--primary); color: #fff;
  transition: background var(--transition);
}
.nav-search button:hover { background: var(--primary-dark); }
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-link {
  font-size: 15px; font-weight: 600; color: var(--text-muted);
  padding: 8px 18px; border-radius: 999px;
  transition: all var(--transition); white-space: nowrap;
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); background: var(--primary-light); }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: var(--bg-soft); align-items: center; justify-content: center; font-size: 18px; color: var(--text-main); }

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  background: linear-gradient(120deg, rgba(8, 16, 34, 0.88), rgba(13, 27, 46, 0.72)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  padding: 112px 0 100px;
  text-align: center;
}
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 80px;
  background: linear-gradient(transparent, var(--bg-body));
  pointer-events: none;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px; padding: 7px 18px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.06em;
  backdrop-filter: blur(4px);
}
.hero h1 { font-size: clamp(2.4rem, 5vw, 3.8rem); font-weight: 900; line-height: 1.15; margin: 24px 0 18px; letter-spacing: -0.02em; }
.hero h1 .gradient {
  background: linear-gradient(90deg, #60a5fa, #fbbf24);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { max-width: 680px; margin: 0 auto 38px; font-size: clamp(1rem, 1.4vw, 1.15rem); color: rgba(255, 255, 255, 0.78); line-height: 1.8; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 58px; }
.hero-stats { display: flex; gap: 40px; justify-content: center; flex-wrap: wrap; }
.hero-stat { text-align: center; min-width: 118px; }
.hero-stat strong { display: block; font-size: clamp(1.6rem, 2.6vw, 2.4rem); font-weight: 900; line-height: 1.2; }
.hero-stat span { font-size: 13px; color: rgba(255, 255, 255, 0.7); }

/* ===== 核心特色 ===== */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 26px;
  transition: all var(--transition); position: relative; overflow: hidden;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0; transition: opacity var(--transition);
}
.feature-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 54px; height: 54px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: var(--primary-light); color: var(--primary);
  font-size: 22px; margin-bottom: 20px;
}
.feature-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===== 分类入口 ===== */
.category-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; align-items: stretch; }
.category-main {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  min-height: 340px; display: flex; align-items: flex-end;
  background: linear-gradient(180deg, rgba(13, 27, 46, 0.1), rgba(13, 27, 46, 0.85)), url('/assets/images/coverpic/cover-1.png') center / cover no-repeat;
  color: #fff; transition: transform var(--transition), box-shadow var(--transition);
}
.category-main:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-main-content { padding: 34px; width: 100%; }
.category-main-content h3 { font-size: 26px; font-weight: 800; margin-bottom: 8px; }
.category-main-content p { font-size: 14px; color: rgba(255, 255, 255, 0.8); margin-bottom: 16px; max-width: 420px; }
.category-link {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14px; font-weight: 700;
  background: rgba(255, 255, 255, 0.18); border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 9px 20px; border-radius: 999px;
  transition: all var(--transition);
}
.category-link:hover { background: #fff; color: var(--primary); }
.category-side { display: grid; grid-template-rows: 1fr 1fr; gap: 28px; }
.category-mini {
  position: relative; border-radius: var(--radius-lg); overflow: hidden;
  display: flex; align-items: flex-end; color: #fff;
  transition: transform var(--transition), box-shadow var(--transition);
}
.category-mini:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.category-mini-content { padding: 26px; width: 100%; }
.category-mini-content h4 { font-size: 19px; font-weight: 700; margin-bottom: 4px; }
.category-mini-content p { font-size: 13px; color: rgba(255, 255, 255, 0.78); }
.category-mini-1 { background: linear-gradient(180deg, rgba(13, 27, 46, 0.1), rgba(13, 27, 46, 0.82)), url('/assets/images/coverpic/cover-2.png') center / cover no-repeat; }
.category-mini-2 { background: linear-gradient(180deg, rgba(13, 27, 46, 0.1), rgba(13, 27, 46, 0.82)), url('/assets/images/coverpic/cover-3.png') center / cover no-repeat; }

/* ===== 最新资讯 ===== */
.news-layout { display: grid; grid-template-columns: 1fr 320px; gap: 32px; align-items: start; }
.news-list { display: flex; flex-direction: column; gap: 18px; }
.news-card {
  display: block; background: var(--white);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 24px 26px;
  transition: all var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); border-color: transparent; transform: translateY(-3px); }
.news-card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.news-card time { font-size: 12px; color: var(--text-muted); }
.news-card h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 8px; transition: color var(--transition); }
.news-card:hover h3 { color: var(--primary); }
.news-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-more { font-size: 13px; font-weight: 700; color: var(--primary); display: inline-flex; align-items: center; gap: 6px; }
.news-more i { transition: transform var(--transition); }
.news-card:hover .news-more i { transform: translateX(4px); }
.news-side { display: flex; flex-direction: column; gap: 24px; }
.side-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 24px; }
.side-card h3 { font-size: 16px; font-weight: 800; margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud a {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  background: var(--bg-soft); border-radius: 999px; padding: 6px 14px;
  transition: all var(--transition);
}
.tag-cloud a:hover { background: var(--primary-light); color: var(--primary); }
.side-tip { display: flex; gap: 12px; align-items: flex-start; }
.side-tip i { font-size: 18px; color: var(--accent); margin-top: 3px; }
.side-tip p { font-size: 13px; color: var(--text-muted); }
.empty-tip {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  background: var(--white); border: 1px dashed var(--border);
  border-radius: var(--radius-md); padding: 60px 20px; text-align: center; color: var(--text-muted);
}
.empty-tip i { font-size: 36px; color: var(--border); margin-bottom: 12px; }
.empty-tip p { font-size: 15px; }

/* ===== 数据看板 ===== */
.data-section {
  position: relative;
  background: linear-gradient(135deg, #0d1b2e, #122a4d);
  color: #fff; padding: 88px 0; overflow: hidden;
}
.data-section::before {
  content: ""; position: absolute; top: -120px; right: -80px;
  width: 360px; height: 360px; border-radius: 50%;
  background: rgba(23, 92, 211, 0.3); filter: blur(120px);
}
.data-section::after {
  content: ""; position: absolute; bottom: -100px; left: -60px;
  width: 300px; height: 300px; border-radius: 50%;
  background: rgba(255, 107, 53, 0.18); filter: blur(100px);
}
.data-section .section-title { color: #fff; }
.data-section .section-sub { color: rgba(255, 255, 255, 0.7); }
.data-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; z-index: 1; }
.data-card {
  background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg); padding: 36px 24px; text-align: center;
  backdrop-filter: blur(8px); transition: all var(--transition);
}
.data-card:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-4px); }
.data-card strong { display: block; font-size: clamp(2rem, 3vw, 2.8rem); font-weight: 900; line-height: 1.2; margin-bottom: 8px; }
.data-card span { font-size: 14px; color: rgba(255, 255, 255, 0.72); }
.data-card .data-icon { width: 46px; height: 46px; margin: 0 auto 16px; display: flex; align-items: center; justify-content: center; border-radius: 12px; background: rgba(255, 255, 255, 0.12); color: #60a5fa; font-size: 20px; }

/* ===== 内容流程 ===== */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; counter-reset: steps; }
.step-card {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 36px 28px; position: relative;
  transition: all var(--transition);
}
.step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
.step-num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900; margin-bottom: 20px;
  box-shadow: 0 6px 16px rgba(23, 92, 211, 0.3);
}
.step-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.step-arrow { position: absolute; top: 48px; right: -26px; color: var(--border); font-size: 20px; z-index: 2; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item {
  background: var(--white); border: 1px solid var(--border);
  border-radius: var(--radius-md); overflow: hidden;
  transition: all var(--transition);
}
.faq-item:hover { border-color: rgba(23, 92, 211, 0.3); box-shadow: var(--shadow-sm); }
.faq-item summary {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 24px; cursor: pointer; font-size: 16px; font-weight: 700;
  list-style: none; transition: color var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: "\f078"; font-family: "Font Awesome 6 Free"; font-weight: 900;
  font-size: 13px; color: var(--text-muted); transition: transform var(--transition);
}
.faq-item[open] summary::after { transform: rotate(180deg); color: var(--primary); }
.faq-item .faq-body { padding: 0 24px 22px; font-size: 14px; color: var(--text-muted); line-height: 1.8; border-top: 1px solid var(--border); margin: 0 24px; padding: 16px 0 20px; margin-left: 0; margin-right: 0; }

/* ===== CTA ===== */
.cta-section { padding: 88px 0; }
.cta-card {
  position: relative; overflow: hidden;
  background: linear-gradient(120deg, #0e3d8f, #175cd3 60%, #1d6df0);
  border-radius: 28px; padding: 72px 48px;
  text-align: center; color: #fff;
}
.cta-card::before {
  content: ""; position: absolute; top: -80px; right: -60px;
  width: 260px; height: 260px; border-radius: 50%;
  background: rgba(255, 255, 255, 0.1); filter: blur(60px);
}
.cta-card h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); font-weight: 900; margin-bottom: 14px; letter-spacing: -0.01em; }
.cta-card p { max-width: 560px; margin: 0 auto 32px; font-size: 15px; color: rgba(255, 255, 255, 0.82); }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.site-footer { background: var(--bg-dark); color: rgba(255, 255, 255, 0.72); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo span { color: #60a5fa; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 14px; }
.footer-col h4 { font-size: 15px; font-weight: 800; color: #fff; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14px; padding: 5px 0; transition: color var(--transition), padding-left var(--transition); }
.footer-col a:hover { color: #60a5fa; padding-left: 6px; }
.footer-col p { font-size: 14px; padding: 5px 0; display: flex; align-items: center; gap: 8px; }
.footer-col p i { color: #60a5fa; }
.footer-bottom { padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255, 255, 255, 0.5); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .nav-inner { height: 64px; gap: 12px; }
  .nav-search { order: 3; flex-basis: 100%; max-width: 100%; margin-top: 2px; }
  .nav-inner { flex-wrap: wrap; height: auto; padding: 10px 0; }
  .nav-links {
    display: none; width: 100%; flex-direction: column; align-items: stretch;
    background: var(--white); border: 1px solid var(--border);
    border-radius: var(--radius-md); padding: 12px; margin-top: 6px;
    box-shadow: var(--shadow-md);
  }
  .nav-links.open { display: flex; }
  .nav-link { padding: 11px 16px; }
  .nav-toggle { display: flex; margin-left: auto; }
  .hero { padding: 80px 0 76px; }
  .hero-actions { margin-bottom: 40px; }
  .steps { grid-template-columns: 1fr; gap: 20px; }
  .step-arrow { display: none; }
  .cta-card { padding: 52px 24px; }
}
@media (max-width: 520px) {
  .features-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .hero-stats { gap: 24px; }
  .section-head { margin-bottom: 36px; }
  .category-main { min-height: 280px; }
  .category-main-content { padding: 24px; }
  .category-mini-content { padding: 20px; }
}

/* roulang page: category1 */
:root {
    --primary: #0d1f3c;
    --primary-light: #1b3a5c;
    --primary-soft: #e6edf5;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --accent-soft: #fef3e2;
    --bg: #f5f8fc;
    --bg-white: #ffffff;
    --bg-dark: #081426;
    --text: #1e2a3a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --border-dark: rgba(255,255,255,0.12);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 18px 44px rgba(0,0,0,0.12);
    --radius: 18px;
    --radius-sm: 10px;
    --radius-lg: 28px;
    --transition: 0.28s ease;
    --header-h: 76px;
    --space-section: 96px;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
button, input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}
ul, ol {
    list-style: none;
}
h1, h2, h3, h4 {
    line-height: 1.3;
    font-weight: 700;
    color: var(--primary);
}
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 站点头部 / 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.nav-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: var(--header-h);
}
.logo {
    font-size: 26px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    line-height: 1;
    white-space: nowrap;
}
.logo span {
    color: var(--accent);
    font-weight: 700;
}
.nav-search {
    flex: 1;
    max-width: 560px;
    display: flex;
    align-items: center;
    background: var(--primary-soft);
    border: 1.5px solid transparent;
    border-radius: 999px;
    padding: 0 6px 0 20px;
    height: 44px;
    transition: var(--transition);
}
.nav-search:focus-within {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(245,158,11,0.15);
}
.nav-search input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 14px;
}
.nav-search input::placeholder {
    color: var(--text-light);
}
.nav-search button {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    transition: var(--transition);
    flex-shrink: 0;
}
.nav-search button:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}
.nav-link {
    position: relative;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-muted);
    border-radius: 999px;
    transition: var(--transition);
}
.nav-link:hover {
    color: var(--primary);
    background: var(--primary-soft);
}
.nav-link.active {
    color: #fff;
    background: var(--primary);
    box-shadow: var(--shadow-sm);
}
.nav-link.active::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -6px;
    transform: translateX(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary);
    font-size: 20px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.nav-toggle:hover {
    background: var(--accent-soft);
    color: var(--accent);
}
.mobile-menu {
    display: none;
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 12px 24px 20px;
    flex-direction: column;
    gap: 8px;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    z-index: 99;
    box-shadow: var(--shadow-md);
}
.mobile-menu.open {
    display: flex;
}
.mobile-menu a {
    display: block;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
}
.mobile-menu a:hover,
.mobile-menu a.active {
    background: var(--primary-soft);
    color: var(--primary);
}

/* ===== 分类 Hero ===== */
.category-hero {
    position: relative;
    padding: 120px 0 150px;
    background: linear-gradient(135deg, rgba(8,20,38,0.92), rgba(13,31,60,0.78)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff;
    text-align: center;
    overflow: hidden;
}
.category-hero::after {
    content: "";
    position: absolute;
    right: -120px;
    bottom: -120px;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(245,158,11,0.35), transparent 70%);
    pointer-events: none;
}
.category-hero .container {
    position: relative;
    z-index: 2;
}
.hero-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    margin-bottom: 20px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    padding: 8px 18px;
    border-radius: 999px;
    backdrop-filter: blur(6px);
}
.hero-breadcrumb a {
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}
.hero-breadcrumb a:hover {
    color: var(--accent);
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent);
    color: #0d1f3c;
    font-size: 13px;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: 999px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 16px rgba(245,158,11,0.4);
    margin-bottom: 24px;
}
.hero-badge i {
    font-size: 14px;
}
.category-hero h1 {
    color: #fff;
    font-size: 56px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 20px;
}
.category-hero h1 em {
    font-style: normal;
    color: var(--accent);
}
.hero-subtitle {
    max-width: 720px;
    margin: 0 auto 36px;
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255,255,255,0.85);
}
.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 34px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1.2;
}
.btn-accent {
    background: var(--accent);
    color: #0d1f3c;
    box-shadow: 0 8px 24px rgba(245,158,11,0.35);
}
.btn-accent:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(245,158,11,0.45);
}
.btn-ghost {
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255,255,255,0.35);
    backdrop-filter: blur(4px);
}
.btn-ghost:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 52px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.12);
}
.hero-stats .stat {
    text-align: center;
}
.hero-stats .num {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
}
.hero-stats .label {
    font-size: 13px;
    color: rgba(255,255,255,0.7);
    margin-top: 4px;
    letter-spacing: 1px;
}

/* ===== 板块通用 ===== */
.section {
    padding: var(--space-section) 0;
}
.section-head {
    margin-bottom: 48px;
    text-align: center;
}
.section-head .tag-line {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.section-head .tag-line::before,
.section-head .tag-line::after {
    content: "";
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent));
    display: block;
}
.section-head .tag-line::after {
    background: linear-gradient(90deg, var(--accent), transparent);
}
.section-head h2 {
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.section-head p {
    max-width: 680px;
    margin: 0 auto;
    color: var(--text-muted);
    font-size: 16px;
}

/* ===== 核心特色 ===== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 30px 32px;
    text-align: left;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 58px;
    height: 58px;
    border-radius: 16px;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 22px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--accent);
    color: #fff;
    transform: rotate(-6deg) scale(1.05);
}
.feature-card h3 {
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 12px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
}

/* ===== 资讯卡片 ===== */
.news-section {
    background: var(--bg-white);
}
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.news-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.news-thumb {
    position: relative;
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}
.news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.news-card:hover .news-thumb img {
    transform: scale(1.06);
}
.news-thumb::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(13,31,60,0) 40%, rgba(13,31,60,0.25));
}
.news-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: var(--accent);
    color: #0d1f3c;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(245,158,11,0.35);
}
.news-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-meta {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
}
.news-body h3 {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.45;
    margin-bottom: 12px;
}
.news-body h3 a {
    transition: var(--transition);
}
.news-body h3 a:hover {
    color: var(--accent);
}
.news-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 18px;
}
.news-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary);
    transition: var(--transition);
}
.news-more i {
    transition: transform 0.3s ease;
}
.news-more:hover {
    color: var(--accent);
}
.news-more:hover i {
    transform: translateX(5px);
}
.section-cta-center {
    text-align: center;
    margin-top: 48px;
}
.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 12px 32px;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ===== 数据统计 ===== */
.stats-section {
    background: linear-gradient(135deg, #081426, #0d1f3c);
    padding: 90px 0;
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: "";
    position: absolute;
    top: -60px;
    right: -60px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    border: 3px solid rgba(245,158,11,0.15);
}
.stats-section::after {
    content: "";
    position: absolute;
    bottom: -100px;
    left: -80px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(245,158,11,0.12), transparent 70%);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    z-index: 2;
}
.stat-item {
    text-align: center;
    padding: 36px 20px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.stat-item:hover {
    background: rgba(255,255,255,0.08);
    transform: translateY(-4px);
}
.stat-icon {
    font-size: 30px;
    color: var(--accent);
    margin-bottom: 16px;
}
.stat-num {
    font-size: 46px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: 1px;
}
.stat-num span {
    color: var(--accent);
}
.stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.65);
    margin-top: 10px;
    letter-spacing: 0.5px;
}

/* ===== 热门专题 ===== */
.topics-section {
    background: var(--bg);
}
.topics-wrap {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}
.topic-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 26px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
    cursor: pointer;
}
.topic-tag i {
    color: var(--accent);
    font-size: 14px;
    transition: transform 0.3s ease;
}
.topic-tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}
.topic-tag:hover i {
    transform: scale(1.2);
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--bg-white);
}
.faq-wrap {
    max-width: 860px;
    margin: 0 auto;
}
.faq-item {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover {
    border-color: var(--primary-soft);
    box-shadow: var(--shadow-sm);
}
.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 28px;
    cursor: pointer;
    font-weight: 700;
    font-size: 16px;
    color: var(--primary);
    transition: var(--transition);
}
.faq-question .faq-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-soft);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
    transition: var(--transition);
}
.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--accent);
    color: #fff;
}
.faq-answer {
    padding: 0 28px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.8;
}
.faq-item.active .faq-answer {
    padding: 0 28px 26px;
    max-height: 300px;
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    padding: 110px 0;
    background: linear-gradient(135deg, rgba(8,20,38,0.88), rgba(13,31,60,0.78)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    color: #fff;
    text-align: center;
    overflow: hidden;
}
.cta-section .container {
    position: relative;
    z-index: 2;
    max-width: 720px;
}
.cta-section h2 {
    color: #fff;
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 18px;
    letter-spacing: 1px;
}
.cta-section p {
    color: rgba(255,255,255,0.82);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 36px;
}
.cta-form {
    display: flex;
    max-width: 560px;
    margin: 0 auto;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}
.cta-form input[type="email"] {
    flex: 1;
    min-width: 260px;
    height: 52px;
    padding: 0 22px;
    border-radius: 999px;
    background: rgba(255,255,255,0.1);
    border: 1.5px solid rgba(255,255,255,0.25);
    color: #fff;
    font-size: 15px;
    backdrop-filter: blur(8px);
    transition: var(--transition);
}
.cta-form input[type="email"]::placeholder {
    color: rgba(255,255,255,0.6);
}
.cta-form input[type="email"]:focus {
    border-color: var(--accent);
    background: rgba(255,255,255,0.15);
    box-shadow: 0 0 0 4px rgba(245,158,11,0.2);
}
.cta-form .btn-submit {
    height: 52px;
    padding: 0 36px;
    border-radius: 999px;
    background: var(--accent);
    color: #0d1f3c;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}
.cta-form .btn-submit:hover {
    background: var(--accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(245,158,11,0.4);
}
.cta-note {
    font-size: 13px;
    color: rgba(255,255,255,0.5);
    margin-top: 18px;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #081426;
    color: rgba(255,255,255,0.7);
    padding: 80px 0 30px;
    border-top: 3px solid var(--accent);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 48px;
}
.footer-brand .logo {
    color: #fff;
    font-size: 28px;
    display: inline-block;
    margin-bottom: 18px;
}
.footer-brand .logo span {
    color: var(--accent);
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.55);
    max-width: 320px;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 12px;
}
.footer-col h4::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.footer-col a {
    display: block;
    padding: 8px 0;
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--accent);
    transform: translateX(4px);
}
.footer-col p {
    font-size: 14px;
    color: rgba(255,255,255,0.6);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-col p i {
    color: var(--accent);
    width: 18px;
    text-align: center;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 26px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255,255,255,0.35);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    :root {
        --space-section: 72px;
    }
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
    .category-hero h1 {
        font-size: 44px;
    }
}
@media (max-width: 768px) {
    :root {
        --header-h: 64px;
        --space-section: 56px;
    }
    .nav-inner {
        gap: 12px;
    }
    .nav-search {
        display: none;
    }
    .nav-links {
        display: none;
    }
    .nav-toggle {
        display: flex;
        margin-left: auto;
    }
    .category-hero {
        padding: 84px 0 110px;
    }
    .category-hero h1 {
        font-size: 34px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .hero-stats {
        gap: 24px;
        flex-wrap: wrap;
    }
    .hero-stats .num {
        font-size: 26px;
    }
    .section-head h2 {
        font-size: 30px;
    }
    .feature-grid {
        grid-template-columns: 1fr;
    }
    .news-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .cta-section h2 {
        font-size: 30px;
    }
    .cta-form {
        flex-direction: column;
        align-items: stretch;
    }
    .cta-form input[type="email"] {
        width: 100%;
    }
    .cta-form .btn-submit {
        width: 100%;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }
    .category-hero h1 {
        font-size: 28px;
    }
    .hero-actions .btn {
        width: 100%;
        justify-content: center;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .stat-num {
        font-size: 36px;
    }
    .section-head h2 {
        font-size: 26px;
    }
    .news-body {
        padding: 20px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

/* roulang page: article */
:root {
    --primary: #0b2545;
    --primary-light: #13315c;
    --primary-dark: #061a30;
    --accent: #e8a013;
    --accent-light: #f7b733;
    --accent-dark: #c9860d;
    --bg: #f4f7fb;
    --surface: #ffffff;
    --text: #1a2b47;
    --text-weak: #6b7d94;
    --border: #e6ecf3;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(11,37,69,.06);
    --shadow-md: 0 8px 24px rgba(11,37,69,.10);
    --shadow-lg: 0 18px 44px rgba(11,37,69,.14);
    --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, -apple-system, sans-serif;
    --space: 84px;
    --header-height: 76px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select { font: inherit; border: none; outline: none; background: none; }
ul, ol { list-style: none; }

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== 导航 ===== */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}
.nav-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    height: var(--header-height);
}
.logo {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
    line-height: 1;
}
.logo span { color: var(--accent); }
.nav-search {
    flex: 1;
    max-width: 480px;
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0 6px 0 18px;
    height: 44px;
    transition: box-shadow .3s, border-color .3s;
}
.nav-search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(232,160,19,.12);
}
.nav-search input {
    flex: 1;
    min-width: 0;
    background: transparent;
    font-size: 14px;
    color: var(--text);
}
.nav-search button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .3s, transform .2s;
}
.nav-search button:hover { background: var(--accent-dark); transform: scale(1.04); }
.nav-links { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.nav-link {
    padding: 8px 16px;
    border-radius: 999px;
    font-weight: 600;
    color: var(--text-weak);
    transition: all .3s;
    font-size: 14px;
}
.nav-link:hover { color: var(--primary); background: var(--bg); }
.nav-link.active {
    color: var(--primary);
    background: rgba(11,37,69,.06);
    position: relative;
}
.nav-link.active::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 3px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    color: var(--primary);
    transition: background .3s, color .3s;
}
.nav-toggle:hover { background: var(--primary); color: #fff; }

/* ===== 页面横幅 ===== */
.page-banner {
    position: relative;
    padding: 60px 0 100px;
    background: var(--primary-dark);
    overflow: hidden;
}
.page-banner-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: .35;
}
.page-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(6,26,48,.88) 0%, rgba(11,37,69,.55) 100%);
}
.banner-content { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    color: rgba(255,255,255,.7);
    font-size: 13px;
    margin-bottom: 24px;
}
.breadcrumb a { color: rgba(255,255,255,.85); transition: color .3s; }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 12px; color: rgba(255,255,255,.4); }
.banner-heading { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; }
.banner-tag {
    display: inline-block;
    background: rgba(232,160,19,.18);
    border: 1px solid rgba(232,160,19,.45);
    color: var(--accent-light);
    font-size: 14px;
    font-weight: 700;
    padding: 7px 18px;
    border-radius: 999px;
    letter-spacing: .5px;
}
.banner-heading p {
    color: rgba(255,255,255,.65);
    font-size: 14px;
    letter-spacing: 2px;
}

/* ===== 文章主体 ===== */
.article-section {
    padding: 0 0 var(--space);
    margin-top: -48px;
    position: relative;
    z-index: 3;
}
.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 28px;
    align-items: start;
}
.article-main {
    background: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    padding: 44px;
}
.article-main h1 {
    font-size: 28px;
    line-height: 1.45;
    color: var(--text);
    margin-bottom: 18px;
    font-weight: 800;
    letter-spacing: -0.3px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 30px;
    color: var(--text-weak);
    font-size: 14px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.meta-item i { color: var(--accent); }

/* ===== 文章正文排版 ===== */
.article-content {
    font-size: 16px;
    line-height: 1.92;
    color: var(--text);
    word-break: break-word;
}
.article-content h2 {
    font-size: 25px;
    font-weight: 800;
    margin: 40px 0 16px;
    position: relative;
    padding-left: 16px;
    line-height: 1.5;
}
.article-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 5px;
    height: 22px;
    background: var(--accent);
    border-radius: 3px;
}
.article-content h3 {
    font-size: 21px;
    font-weight: 700;
    margin: 32px 0 14px;
}
.article-content h4 {
    font-size: 18px;
    font-weight: 700;
    margin: 24px 0 10px;
}
.article-content p { margin: 14px 0; }
.article-content ul,
.article-content ol { margin: 16px 0; padding-left: 24px; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: 8px; }
.article-content a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color .3s;
}
.article-content a:hover { color: var(--accent); }
.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
    margin: 24px auto;
    box-shadow: var(--shadow-md);
}
.article-content blockquote {
    margin: 24px 0;
    padding: 18px 22px;
    background: var(--bg);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-weak);
    font-style: italic;
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}
.article-content th,
.article-content td {
    border: 1px solid var(--border);
    padding: 10px 12px;
    text-align: left;
}
.article-content th { background: var(--bg); font-weight: 700; }

/* ===== 文章标签 ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 28px;
    margin-top: 36px;
    border-top: 1px solid var(--border);
    align-items: center;
}
.tag-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text);
    margin-right: 4px;
}
.tag-title i { color: var(--accent); margin-right: 4px; }
.tag {
    display: inline-block;
    padding: 7px 15px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 13px;
    color: var(--text-weak);
    transition: all .3s;
    cursor: pointer;
}
.tag:hover {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    transform: translateY(-2px);
}

/* ===== 内容未找到 ===== */
.not-found {
    text-align: center;
    padding: 60px 20px;
}
.not-found-icon {
    width: 88px;
    height: 88px;
    margin: 0 auto 22px;
    background: var(--bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    color: var(--accent);
}
.not-found h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--text);
}
.not-found p { color: var(--text-weak); margin-bottom: 26px; font-size: 15px; }

/* ===== 侧边栏 ===== */
.article-sidebar {
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: sticky;
    top: calc(var(--header-height) + 24px);
}
.sidebar-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow .3s;
}
.sidebar-card:hover { box-shadow: var(--shadow-md); }
.sidebar-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    position: relative;
}
.sidebar-card h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 28px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
.info-list { display: flex; flex-direction: column; gap: 10px; }
.info-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-weak);
}
.info-list li i { color: var(--accent); width: 18px; text-align: center; }
.info-list li strong { color: var(--text); font-weight: 600; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud .tag { font-size: 12px; padding: 6px 12px; }
.side-list { display: flex; flex-direction: column; gap: 4px; }
.side-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: var(--text);
    padding: 9px 0;
    border-bottom: 1px dashed var(--border);
    transition: color .3s;
    line-height: 1.5;
}
.side-item:last-child { border-bottom: none; }
.side-item:hover { color: var(--accent); }
.side-rank {
    width: 26px;
    height: 26px;
    background: var(--bg);
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 800;
    color: var(--primary);
    flex-shrink: 0;
}
.side-item:nth-child(1) .side-rank { background: var(--accent); color: #fff; }
.side-item:nth-child(2) .side-rank { background: #e9a23b; color: #fff; }
.side-item:nth-child(3) .side-rank { background: #d1d9e6; color: var(--primary); }

/* ===== 相关推荐 ===== */
.related-section { padding: 0 0 var(--space); }
.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 30px;
}
.section-head h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    position: relative;
    padding-bottom: 10px;
}
.section-head h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 36px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}
.section-more {
    color: var(--primary);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color .3s, gap .3s;
}
.section-more:hover { color: var(--accent); gap: 10px; }
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: transform .3s, box-shadow .3s;
    display: block;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.related-thumb {
    position: relative;
    height: 190px;
    overflow: hidden;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s;
}
.related-card:hover .related-thumb img { transform: scale(1.06); }
.related-cat {
    position: absolute;
    top: 12px;
    left: 12px;
    background: var(--accent);
    color: #fff;
    font-size: 12px;
    font-weight: 700;
    padding: 5px 13px;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(232,160,19,.35);
}
.related-body { padding: 20px; }
.related-body h3 {
    font-size: 16px;
    font-weight: 700;
    line-height: 1.55;
    margin-bottom: 10px;
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color .3s;
}
.related-card:hover .related-body h3 { color: var(--primary); }
.related-body p {
    font-size: 13px;
    color: var(--text-weak);
    line-height: 1.65;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-date {
    font-size: 13px;
    color: var(--text-weak);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.related-date i { color: var(--accent); }

/* ===== CTA ===== */
.cta-section {
    padding: 76px 0;
    background-position: center;
    background-size: cover;
    position: relative;
    text-align: center;
}
.cta-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(6,26,48,.88), rgba(19,49,92,.72));
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px;
}
.cta-inner h2 {
    color: #fff;
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 14px;
    line-height: 1.4;
}
.cta-inner p {
    color: rgba(255,255,255,.85);
    font-size: 16px;
    margin-bottom: 30px;
}
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    padding: 14px 32px;
    border-radius: 999px;
    transition: background .3s, transform .2s, box-shadow .3s;
    box-shadow: 0 8px 24px rgba(232,160,19,.35);
}
.cta-btn:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(232,160,19,.45);
}
.cta-btn i { font-size: 14px; }

/* ===== 页脚 ===== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255,255,255,.8);
    padding: 56px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 44px;
}
.footer-brand .logo { color: #fff; font-size: 24px; }
.footer-brand .logo span { color: var(--accent); }
.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,.6);
}
.footer-col h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 18px;
}
.footer-col a {
    display: block;
    padding: 5px 0;
    color: rgba(255,255,255,.6);
    font-size: 14px;
    transition: color .3s, padding-left .3s;
}
.footer-col a:hover {
    color: var(--accent-light);
    padding-left: 6px;
}
.footer-col p {
    font-size: 14px;
    color: rgba(255,255,255,.6);
    margin-bottom: 8px;
}
.footer-col p i {
    margin-right: 8px;
    color: var(--accent-light);
    width: 16px;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.45);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    :root { --space: 64px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .sidebar-card { flex: 1; min-width: 240px; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 920px) {
    .nav-inner {
        flex-wrap: wrap;
        height: auto;
        padding-top: 12px;
        padding-bottom: 12px;
        gap: 12px;
    }
    .nav-links {
        order: 4;
        flex-basis: 100%;
        flex-direction: column;
        background: var(--surface);
        padding: 8px 0 0;
        border-top: 1px solid var(--border);
        margin-top: 4px;
        display: none;
        align-items: flex-start;
        gap: 2px;
    }
    .nav-links.open { display: flex; }
    .nav-link {
        width: 100%;
        padding: 12px 8px;
        border-radius: 8px;
        font-size: 15px;
    }
    .nav-link.active::after { left: 8px; right: auto; width: 4px; height: auto; top: 8px; bottom: 8px; border-radius: 4px; }
    .nav-search {
        order: 3;
        flex-basis: 100%;
        max-width: none;
    }
    .nav-toggle {
        order: 2;
        display: inline-flex;
        margin-left: auto;
    }
    .page-banner { padding: 48px 0 86px; }
    .article-main { padding: 28px 22px; }
    .article-main h1 { font-size: 24px; }
}
@media (max-width: 640px) {
    .related-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .cta-inner h2 { font-size: 24px; }
    .cta-inner p { font-size: 14px; }
    .cta-btn { padding: 12px 24px; font-size: 14px; }
    .section-head h2 { font-size: 22px; }
    .page-banner { padding: 40px 0 76px; }
    .article-section { margin-top: -40px; }
    .article-main { padding: 22px 16px; }
    .article-meta { gap: 12px; }
    .footer-bottom { padding: 18px 12px; font-size: 12px; }
}