/* ===============================================
   Xunad Site Styles v2026-08-27-1340
   =============================================== */=============
   Xunad — 亮蓝科技风主题
   参考 AECOM 板块化布局 × 现代科技感视觉
   ============================================================ */
:root {
  --blue: #0A7CFF;
  --blue-deep: #0057D9;
  --cyan: #00E5FF;
  --ink: #060D1F;        /* 近黑深蓝 */
  --ink-2: #0A1633;
  --text: #3a22d6;             /* 正文字蓝色（柔和宝蓝，长文不刺眼） */
  --text-read: #3a22d6;       /* 正文阅读文字蓝色 */
  --text-soft: #6a7ac8;       /* 辅助说明文字浅蓝，与正文拉开层级 */
  --bg: #F5F8FF;
  --bg-blue: #EEF4FF;
  --line: #E3ECFF;
  --card: #FFFFFF;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(10, 60, 180, .10);
  --shadow-hover: 0 18px 44px rgba(10, 90, 220, .20);
  --grad: linear-gradient(135deg, #0A7CFF 0%, #00A8FF 55%, #00E5FF 100%);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; }
a { color: var(--blue); text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s, box-shadow .3s, backdrop-filter .3s;
}
.site-header.scrolled {
  background: rgba(6, 13, 31, .82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 24px rgba(2, 8, 30, .35);
}
.header-inner { display: flex; align-items: center; gap: 28px; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 800; font-size: 21px; letter-spacing: .5px; }
.logo-img { height: 44px; width: auto; display: block; }
.logo-img-footer { height: 36px; }
@media (max-width: 640px) { .logo-img { height: 36px; } .logo-img-footer { height: 30px; } }
.logo-text { background: linear-gradient(90deg, #fff, #9FD4FF); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; gap: 4px; margin-left: auto; }
.main-nav a {
  color: rgba(255,255,255,.78); font-size: 15px; padding: 8px 14px; border-radius: 8px;
  transition: color .2s, background .2s;
}
.main-nav a:hover { color: #fff; background: rgba(255,255,255,.10); }
.main-nav a.active { color: #fff; background: rgba(10,124,255,.35); box-shadow: inset 0 0 0 1px rgba(0,229,255,.35); }
.nav-cta {
  background: var(--grad); color: #fff; font-size: 14px; font-weight: 600;
  padding: 9px 20px; border-radius: 999px; box-shadow: 0 6px 18px rgba(10,124,255,.45);
  transition: transform .2s, box-shadow .2s;
}
.nav-cta:hover { transform: translateY(-1px); box-shadow: 0 10px 26px rgba(10,124,255,.6); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 6px; margin-left: auto; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: .3s; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 92vh; display: flex; align-items: center; overflow: hidden; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background:
    radial-gradient(900px 480px at 78% 20%, rgba(0,160,255,.35), transparent 60%),
    linear-gradient(100deg, rgba(4,10,26,.92) 0%, rgba(5,16,42,.78) 42%, rgba(6,20,52,.45) 100%);
}
.hero::after { /* 网格线 */
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(rgba(0,229,255,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), transparent 85%);
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,.9), transparent 85%);
}
.hero-inner { position: relative; z-index: 2; padding-top: 120px; padding-bottom: 80px; max-width: 780px; margin-left: auto; margin-right: auto; text-align: left; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 8px; color: var(--cyan);
  font-size: 13px; letter-spacing: 1.5px; padding: 7px 16px; border-radius: 999px;
  border: 1px solid rgba(0,229,255,.4); background: rgba(0,229,255,.08);
  backdrop-filter: blur(6px); margin-bottom: 26px;
}
.hero-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 10px var(--cyan); }
.hero h1 {
  color: #fff; font-size: clamp(34px, 5.2vw, 58px); line-height: 1.18; font-weight: 800; letter-spacing: 1px;
  text-shadow: 0 4px 30px rgba(0,0,0,.4);
}
.hero-sub { color: rgba(220,235,255,.85); font-size: clamp(15px, 1.6vw, 18px); margin: 22px 0 34px; max-width: 620px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-size: 15px; font-weight: 600; padding: 13px 30px; border-radius: 999px; transition: .25s;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 10px 30px rgba(10,124,255,.5); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px rgba(10,150,255,.65); }
.btn-ghost { color: #fff; border: 1.5px solid rgba(255,255,255,.45); background: rgba(255,255,255,.06); backdrop-filter: blur(6px); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(0,229,255,.1); }
.hero-scroll {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 2;
  color: rgba(255,255,255,.5); font-size: 12px; letter-spacing: 3px; animation: bob 2.2s infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%,0); } 50% { transform: translate(-50%,8px); } }

/* ---------- 数据条 ---------- */
.stats { background: linear-gradient(135deg, #071233 0%, #0A2B66 60%, #0A3D8F 100%); position: relative; }
.stats::before { content: ""; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(0,229,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,.06) 1px, transparent 1px);
  background-size: 34px 34px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; padding: 42px 24px; position: relative; }
.stat { text-align: center; }
.stat-value {
  font-size: clamp(30px, 4vw, 44px); font-weight: 800; color: #fff;
  background: linear-gradient(180deg, #fff 20%, #6FD3FF 90%); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat-label { color: rgba(180,210,255,.8); font-size: 14px; margin-top: 4px; letter-spacing: 1px; }

/* ---------- 通用 section ---------- */
.section { padding: 88px 0; }
.section-white { background: #fff; }
.section-blue { background: var(--bg-blue); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-tag {
  display: inline-block; color: var(--blue); font-size: 13px; font-weight: 700; letter-spacing: 2px;
  padding: 5px 14px; border-radius: 999px; background: rgba(10,124,255,.08); border: 1px solid rgba(10,124,255,.22); margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(26px, 3.2vw, 36px); color: var(--ink-2); font-weight: 800; letter-spacing: .5px; }
.section-head p { color: var(--text-soft); margin-top: 14px; font-size: 15.5px; }

/* ---------- 业务卡片 ---------- */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.feature-card {
  position: relative; display: block; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 36px 30px 30px; overflow: hidden;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.feature-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad); opacity: 0; transition: opacity .3s;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(10,124,255,.4); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: var(--grad); color: #fff; margin-bottom: 22px;
  box-shadow: 0 8px 20px rgba(10,124,255,.4);
}
.feature-icon svg { width: 26px; height: 26px; }
.feature-card h3 { color: var(--ink-2); font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--text-soft); font-size: 14.5px; }
.feature-more { display: inline-block; margin-top: 18px; color: var(--blue); font-size: 14px; font-weight: 600; }
.feature-card:hover .feature-more { letter-spacing: .5px; }

/* ---------- 首页简介区 ---------- */
.intro-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 60px; align-items: center; }
.intro-copy .section-tag { margin-bottom: 14px; }
.intro-copy h2 { font-size: clamp(24px, 3vw, 33px); color: var(--ink-2); font-weight: 800; margin-bottom: 18px; letter-spacing: .5px; }
.intro-copy p { color: var(--text-soft); margin-bottom: 12px; }
.intro-visual { position: relative; min-height: 360px; }
.viz-card {
  position: absolute; display: flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.9); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 20px; font-size: 14px; font-weight: 600; color: var(--ink-2);
  box-shadow: var(--shadow); backdrop-filter: blur(8px); white-space: nowrap;
}
.viz-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); }
.viz-card-1 { top: 8%; left: 2%; animation: float 5s ease-in-out infinite; }
.viz-card-2 { top: 42%; left: 38%; animation: float 6s ease-in-out infinite .8s; }
.viz-card-3 { bottom: 6%; left: 6%; animation: float 5.5s ease-in-out infinite 1.6s; }
.viz-card::after { content: ""; position: absolute; inset: -14px; border-radius: 22px; border: 1px dashed rgba(10,124,255,.25); z-index: -1; }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.case-card {
  display: block; background: var(--card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line); transition: transform .3s, box-shadow .3s;
}
.case-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.case-media { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.case-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover .case-media img { transform: scale(1.06); }
.case-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(4,12,32,.55), transparent 55%); }
.case-tag {
  position: absolute; left: 14px; bottom: 12px; z-index: 2; color: #fff; font-size: 12px; letter-spacing: 1px;
  padding: 4px 12px; border-radius: 999px; background: rgba(10,124,255,.75); border: 1px solid rgba(0,229,255,.5); backdrop-filter: blur(4px);
}
.case-body { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; }
.case-body h3 { font-size: 16.5px; color: var(--ink-2); font-weight: 700; }
.case-arrow { color: var(--blue); font-size: 20px; transition: transform .3s; }
.case-card:hover .case-arrow { transform: translateX(6px); }

/* ---------- CTA ---------- */
.cta { position: relative; padding: 96px 0; background: linear-gradient(135deg, #050B1F 0%, #0A2B66 70%, #0A3D8F 100%); overflow: hidden; text-align: center; }
.cta::before { content: ""; position: absolute; inset: 0; opacity: .4;
  background-image: linear-gradient(rgba(0,229,255,.06) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,.06) 1px, transparent 1px);
  background-size: 40px 40px; }
.cta::after { content: ""; position: absolute; width: 640px; height: 640px; border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%,-50%);
  background: radial-gradient(circle, rgba(0,160,255,.28), transparent 65%); pointer-events: none; }
.cta-inner { position: relative; z-index: 2; }
.cta h2 { color: #fff; font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; letter-spacing: .5px; }
.cta p { color: rgba(200,225,255,.85); margin: 16px auto 34px; max-width: 520px; font-size: 15.5px; }
.cta .hero-actions { justify-content: center; }

/* ---------- 子页 ---------- */
.page-hero { position: relative; height: 380px; overflow: hidden; display: flex; align-items: flex-end; }
.page-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.page-hero-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,12,32,.62), rgba(5,12,32,.85)); }
.page-hero::after { content: ""; position: absolute; inset: 0; opacity: .35;
  background-image: linear-gradient(rgba(0,229,255,.07) 1px, transparent 1px), linear-gradient(90deg, rgba(0,229,255,.07) 1px, transparent 1px);
  background-size: 42px 42px; }
.page-hero-inner { position: relative; z-index: 2; padding: 120px 24px 44px; max-width: 1180px; width: 100%; margin: 0 auto; }
.crumbs { display: flex; gap: 10px; color: rgba(255,255,255,.55); font-size: 13px; margin-bottom: 12px; }
.crumbs a { color: rgba(255,255,255,.75); }
.crumbs a:hover { color: var(--cyan); }
.page-hero h1 { color: #fff; font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; letter-spacing: 1px; }
.content-wrap { padding: 60px 24px 90px; }
.content-card {
  max-width: 860px; margin: 0 auto; background: var(--card); border: 1px solid var(--line);
  border-radius: 18px; padding: 48px 52px; box-shadow: var(--shadow);
}
.content-card h2 { color: var(--ink-2); font-size: 24px; font-weight: 800; margin: 34px 0 14px; padding-left: 14px; border-left: 4px solid var(--blue); }
.content-card h2:first-child { margin-top: 0; }
.content-card h3 { color: var(--ink-2); font-size: 18px; font-weight: 700; margin: 24px 0 10px; }
.content-card p { margin-bottom: 12px; color: var(--text-read); }
.content-card ul, .content-card ol { margin: 0 0 16px 22px; }
.content-card li { margin-bottom: 8px; }
.content-card a { border-bottom: 1px solid rgba(10,124,255,.3); }
.content-card blockquote { border-left: 3px solid var(--cyan); background: var(--bg-blue); padding: 14px 18px; border-radius: 0 10px 10px 0; margin: 16px 0; color: var(--text-soft); }
.content-card code { background: var(--bg-blue); padding: 2px 7px; border-radius: 6px; font-size: 13.5px; color: var(--blue-deep); }
.content-card table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14.5px; }
.content-card th, .content-card td { border: 1px solid var(--line); padding: 10px 14px; text-align: left; }
.content-card th { background: var(--bg-blue); color: var(--ink-2); font-weight: 700; }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); }
.footer-inner { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 40px; padding: 56px 24px 40px; }
.logo-light .logo-text { background: linear-gradient(90deg, #fff, #7CC8FF); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.footer-brand p { font-size: 14px; margin-top: 14px; color: rgba(255,255,255,.55); }
.footer-nav { display: flex; flex-direction: column; gap: 10px; }
.footer-nav a { color: rgba(255,255,255,.7); font-size: 14.5px; }
.footer-nav a:hover { color: var(--cyan); }
.footer-contact p { font-size: 14px; margin-bottom: 8px; color: rgba(255,255,255,.6); }
.footer-bar { border-top: 1px solid rgba(255,255,255,.08); text-align: center; padding: 18px; font-size: 12.5px; color: rgba(255,255,255,.4); }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .feature-grid, .case-grid { grid-template-columns: 1fr 1fr; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-visual { min-height: 300px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0; flex-direction: column; gap: 2px;
    background: rgba(6,13,31,.97); backdrop-filter: blur(14px); padding: 14px 20px 20px;
    transform: translateY(-120%); transition: transform .3s; border-bottom: 1px solid rgba(0,229,255,.2);
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav a { padding: 12px 14px; font-size: 16px; }
  .nav-cta { display: none; }
  .hero { min-height: 88vh; }
  .hero-inner { padding-top: 110px; }
  .feature-grid, .case-grid { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .content-card { padding: 30px 24px; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
  .page-hero { height: 300px; }
  .stats-grid { gap: 14px; }
}

/* ── 内容页表格 ── */
.content-card table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  background: rgba(6,20,40,0.6);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(10,124,255,0.2);
}
.content-card table th {
  background: rgba(10,124,255,0.18);
  color: #9FD4FF;
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid rgba(10,124,255,0.3);
}
.content-card table td {
  padding: 11px 16px;
  color: rgba(200,220,240,0.88);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  vertical-align: top;
}
.content-card table tr:last-child td { border-bottom: none; }
.content-card table tr:nth-child(even) td { background: rgba(10,124,255,0.06); }
.content-card table tr:hover td { background: rgba(10,124,255,0.12); }

/* ── 引用块（光纤弯曲半径等提示） ── */
.content-card blockquote {
  border-left: 3px solid var(--cyan);
  margin: 20px 0;
  padding: 14px 20px;
  background: rgba(0,229,255,0.06);
  border-radius: 0 8px 8px 0;
  color: rgba(190,220,255,0.9);
  font-size: 14px;
}

/* ── 内容页小标题层级（.content-card 为白底，颜色用深色） ── */
.content-card h4 {
  margin-top: 18px;
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--ink-2);
  font-weight: 600;
}
.content-card code {
  background: var(--bg-blue);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--blue-deep);
}
/* ── 列表页容器 ── */
.list-container {
  padding: 48px 0 64px;
  max-width: 860px;
  margin: 0 auto;
}

/* ── 文章卡片 ── */
.art-card {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  background: rgba(6,20,40,0.7);
  border: 1px solid rgba(10,124,255,0.15);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 24px;
  text-decoration: none;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.art-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(10,124,255,.18);
  border-color: rgba(10,124,255,.4);
}
.art-media {
  overflow: hidden;
  background: rgba(10,124,255,.1);
}
.art-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .4s;
}
.art-card:hover .art-media img { transform: scale(1.04); }
.art-body {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}
.art-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.art-tag {
  background: rgba(0,229,255,.12);
  color: var(--cyan);
  border: 1px solid rgba(0,229,255,.25);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px;
  letter-spacing: .04em;
}
.art-date {
  color: rgba(140,165,200,.6);
  font-size: 12px;
}
.art-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin: 0;
  line-height: 1.35;
}
.art-summary {
  font-size: 14px;
  color: rgba(170,200,230,.75);
  margin: 4px 0 0;
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.art-read {
  font-size: 13px;
  color: var(--blue);
  margin-top: 6px;
  display: inline-block;
}
.art-card:hover .art-read { color: var(--cyan); }

/* ── 列表空状态 ── */
.list-empty {
  text-align: center;
  padding: 80px 0;
  color: rgba(140,165,200,.5);
  font-size: 15px;
}

/* ── 详情页优化（在 content-card 白底里渲染，颜色用深色变量） ── */
article.detail-body { font-size: 15.5px; color: var(--text-read); }
article.detail-body h2 {
  font-size: 22px;
  color: var(--ink-2);
  font-weight: 800;
  margin: 34px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--blue);
}
article.detail-body h3 {
  font-size: 17px;
  color: var(--blue-deep);
  font-weight: 700;
  margin: 24px 0 10px;
}
article.detail-body p { color: var(--text-read); margin-bottom: 14px; line-height: 1.85; }
article.detail-body ul, article.detail-body ol { margin: 12px 0 14px 22px; }
article.detail-body li { color: var(--text-read); margin-bottom: 8px; line-height: 1.8; }
article.detail-body strong { color: var(--ink-2); font-weight: 700; }
article.detail-body blockquote {
  border-left: 3px solid var(--cyan);
  margin: 20px 0;
  padding: 14px 20px;
  background: var(--bg-blue);
  border-radius: 0 8px 8px 0;
  color: var(--text);
  font-size: 14.5px;
}
article.detail-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14px;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--line);
}
article.detail-body table th {
  background: var(--bg-blue);
  color: var(--ink-2);
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  font-size: 13.5px;
  border-bottom: 1px solid var(--line);
}
article.detail-body table td {
  padding: 11px 16px;
  color: var(--text-read);
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
article.detail-body table tr:last-child td { border-bottom: none; }
article.detail-body table tr:nth-child(even) td { background: #FAFCFF; }

/* ── 响应式：文章卡片 ── */
@media (max-width: 640px) {
  .art-card { grid-template-columns: 1fr; }
  .art-media { height: 200px; }
  .art-body { padding: 18px 20px; }
}