/* 思量科技官网静态 demo —— 公共样式（对应模板包 assets/css/style.css） */
:root {
  --primary: #2b5cff;
  --primary-dark: #1e46c8;
  --text: #1c2333;
  --muted: #6b7280;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --border: #e5e8f0;
  --radius: 12px;
  --shadow: 0 2px 16px rgba(28, 35, 51, .07);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.7;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--muted); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.92); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 60px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; }
.logo-mark {
  width: 34px; height: 34px; border-radius: 9px; flex: none;
  background: linear-gradient(135deg, var(--primary), #7a5cff);
  color: #fff; display: flex; align-items: center; justify-content: center;
  font-size: 14px; letter-spacing: .5px;
}
.site-nav { display: flex; gap: 4px; margin-left: auto; }
.nav-link {
  padding: 8px 13px; border-radius: 8px; font-size: 15px; color: var(--muted);
  transition: all .2s; white-space: nowrap;
}
.nav-link:hover { color: var(--text); background: var(--bg-alt); }
.nav-link.active { color: var(--primary); background: rgba(43,92,255,.08); font-weight: 600; }
.header-cta { flex: none; }
.nav-toggle { display: none; font-size: 22px; background: none; border: none; cursor: pointer; color: var(--text); line-height: 1; padding: 6px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 10px 22px; border-radius: 10px;
  font-size: 15px; font-weight: 500; transition: all .2s; cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); background: #fff; }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- Breadcrumb（对齐容器，位于页头标题上方） ---------- */
.breadcrumb {
  padding: 18px 0 0; font-size: 13px; color: var(--muted);
  display: flex; align-items: center; flex-wrap: wrap; gap: 0;
  line-height: 1.6; min-width: 0;
}
.breadcrumb a { color: var(--muted); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { margin: 0 8px; font-style: normal; color: #c2c8d6; }
.breadcrumb span:last-child { color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0; text-align: center; color: #fff;
  background: linear-gradient(135deg, #10193f 0%, #1e3a8a 55%, #2b5cff 100%);
}
.hero h1 { font-size: clamp(26px, 5.5vw, 42px); letter-spacing: 1px; margin-bottom: 14px; }
.hero p { font-size: clamp(14px, 2vw, 17px); opacity: .85; max-width: 640px; margin: 0 auto 30px; }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.hero .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.4); }
.hero .btn-ghost:hover { border-color: #fff; color: #fff; }

/* ---------- Stats ---------- */
.stats { padding: 32px 0; background: #fff; border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; gap: 12px; }
.stats strong { display: block; font-size: clamp(22px, 3.5vw, 30px); color: var(--primary); }
.stats span { color: var(--muted); font-size: 14px; }

/* ---------- Sections ---------- */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section-title { font-size: clamp(22px, 3.5vw, 28px); text-align: center; }
.section-sub { text-align: center; color: var(--muted); margin: 8px 0 36px; }
.more-wrap { text-align: center; margin-top: 36px; }

/* ---------- Page head ---------- */
.page-head { padding: 32px 0 0; text-align: center; }
.page-head h1 { font-size: clamp(22px, 4vw, 30px); margin-bottom: 8px; overflow-wrap: break-word; }
.page-head .muted { font-size: 14px; }
.cat-keywords { margin-top: 12px; }
.cat-keywords span {
  display: inline-block; margin: 4px 5px; padding: 3px 12px; border-radius: 999px;
  background: var(--bg-alt); border: 1px solid var(--border);
  color: var(--muted); font-size: 13px;
}

/* ---------- Pagination（纯静态分页条） ---------- */
.pagination {
  display: flex; justify-content: center; align-items: center;
  flex-wrap: wrap; gap: 8px; margin-top: 40px;
}
.page-btn {
  min-width: 40px; padding: 8px 14px; border-radius: 8px; text-align: center;
  border: 1px solid var(--border); background: #fff; font-size: 14px;
  color: var(--text); transition: all .2s;
}
a.page-btn:hover { color: var(--primary); border-color: var(--primary); }
.page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.page-btn.disabled { color: #b9c0cf; background: var(--bg-alt); cursor: default; }

/* ---------- Cards (产品列表) ---------- */
.card-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px;
}
.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; transition: all .25s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card-cover {
  height: 150px; display: flex; align-items: center; justify-content: center;
}
.cover-letter {
  font-size: 52px; font-weight: 800; color: rgba(255,255,255,.9);
  text-shadow: 0 2px 12px rgba(0,0,0,.18);
}
.card-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; gap: 10px; }
.card-body h3 { font-size: 17px; line-height: 1.45; overflow-wrap: break-word; }
.card-body h3 a:hover { color: var(--primary); }
.card-summary { color: var(--muted); font-size: 14px; flex: 1; }
.card-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 13px; color: var(--muted); }
.card-meta .cat { color: var(--primary); font-weight: 500; }
.card-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.badge-top {
  display: inline-block; margin-right: 8px; padding: 1px 8px; border-radius: 6px;
  background: #fef3c7; color: #b45309; font-size: 12px; vertical-align: 2px;
}

/* ---------- List rows (新闻列表) ---------- */
.list-rows { display: flex; flex-direction: column; gap: 18px; }
.list-row {
  display: flex; gap: 20px; padding: 20px; background: #fff;
  border: 1px solid var(--border); border-radius: var(--radius); transition: all .25s;
}
.list-row:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.row-thumb {
  width: 140px; height: 96px; border-radius: 10px; flex: none;
  display: flex; align-items: center; justify-content: center;
}
.row-thumb .cover-letter { font-size: 34px; }
.row-body { flex: 1; display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.row-body h3 { font-size: 17px; overflow-wrap: break-word; }
.row-body h3 a:hover { color: var(--primary); }
.row-body .muted {
  font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}
.list-row .card-meta { margin-top: auto; }

/* ---------- Detail ---------- */
.detail-layout {
  display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 40px; align-items: start;
}
.detail-sub { font-size: 16px; color: var(--muted); }
.detail-meta {
  display: flex; flex-wrap: wrap; gap: 14px; margin-top: 14px;
  font-size: 13px; color: var(--muted); justify-content: center;
}
.detail-meta .cat { color: var(--primary); font-weight: 500; }
.detail-content {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 36px 40px; overflow-wrap: break-word;
}
.detail-content h2 { font-size: 21px; margin: 28px 0 12px; padding-left: 12px; border-left: 4px solid var(--primary); }
.detail-content h2:first-child { margin-top: 0; }
.detail-content p { margin: 12px 0; color: #333c52; }
.detail-content ul { margin: 12px 0 12px 22px; color: #333c52; }
.detail-content li { margin: 6px 0; }
.detail-content blockquote {
  margin: 18px 0; padding: 14px 18px; background: var(--bg-alt);
  border-left: 4px solid var(--primary); border-radius: 0 8px 8px 0; color: var(--muted);
}
.detail-content table { width: 100%; border-collapse: collapse; margin: 16px 0; }
.detail-content th, .detail-content td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; }
.detail-content th { background: var(--bg-alt); }
.detail-side { display: flex; flex-direction: column; gap: 18px; position: sticky; top: 80px; }
.side-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; }
.side-box h4 { font-size: 15px; margin-bottom: 10px; }
.side-box .muted { font-size: 14px; }
.pn-bar { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.pn {
  padding: 12px 18px; background: #fff; border: 1px solid var(--border);
  border-radius: 10px; font-size: 14px; max-width: 48%; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.pn:hover { color: var(--primary); border-color: var(--primary); }

/* ---------- Tags ---------- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag-chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 6px 14px; border-radius: 999px; background: var(--bg-alt);
  border: 1px solid var(--border); font-size: 14px; transition: all .2s;
}
.tag-chip:hover { color: var(--primary); border-color: var(--primary); background: rgba(43,92,255,.06); }
.tag-chip em { font-style: normal; font-size: 12px; color: var(--muted); }
.tag-chip.big { padding: 10px 20px; font-size: 15px; }
.tag-mini { font-size: 12.5px; color: var(--primary); opacity: .85; }
.tag-mini:hover { opacity: 1; }
.tag-list { display: flex; flex-direction: column; gap: 14px; max-width: 820px; margin: 0 auto; }
.tag-item {
  display: flex; align-items: baseline; gap: 16px; padding: 18px 22px;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
  transition: all .2s; flex-wrap: wrap;
}
.tag-item:hover { box-shadow: var(--shadow); color: var(--primary); }
.tag-item .cat {
  flex: none; font-size: 12.5px; color: var(--primary);
  background: rgba(43,92,255,.08); padding: 2px 10px; border-radius: 999px;
}
.tag-item strong { flex: 1 1 200px; font-size: 16px; min-width: 0; overflow-wrap: break-word; }
.tag-item time { color: var(--muted); font-size: 13px; }

/* ---------- Footer ---------- */
.site-footer { background: #10193f; color: #c6cde0; margin-top: 40px; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px; padding: 52px 20px 32px;
}
.site-footer .logo-text { color: #fff; }
.site-footer h4 { color: #fff; font-size: 15px; margin-bottom: 14px; }
.site-footer a { display: inline-block; margin: 6px 12px 6px 0; font-size: 14px; color: #9aa4c0; }
.site-footer a:hover { color: #fff; }
.site-footer p { font-size: 14px; }
.footer-tags .tag-chip { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.14); color: #c6cde0; }
.footer-tags .tag-chip:hover { color: #fff; border-color: #fff; }
.copyright { border-top: 1px solid rgba(255,255,255,.1); padding: 18px 20px; text-align: center; font-size: 13px; color: #7c86a5; }

/* ---------- Responsive: 平板 ≤ 900px ---------- */
@media (max-width: 900px) {
  .header-inner { gap: 14px; }
  .site-nav {
    display: none; position: absolute; top: 60px; left: 0; right: 0;
    background: #fff; flex-direction: column; padding: 10px 20px 16px;
    border-bottom: 1px solid var(--border); box-shadow: var(--shadow);
  }
  .site-nav.open { display: flex; }
  .site-nav .nav-link { padding: 12px 14px; }
  .nav-toggle { display: block; margin-left: auto; }
  .header-cta { display: none; }
  .hero { padding: 60px 0; }
  .hero-actions .btn { padding: 10px 18px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 22px; }
  .detail-layout { grid-template-columns: 1fr; gap: 24px; }
  .detail-side { position: static; }
  .detail-content { padding: 26px 22px; }
  .list-row { flex-direction: column; }
  .row-thumb { width: 100%; height: 120px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .pn { max-width: 100%; flex: 1 1 100%; }
}

/* ---------- Responsive: 手机 ≤ 640px ---------- */
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .hero { padding: 48px 0; }
  .hero h1 { letter-spacing: 0; }
  .section { padding: 42px 0; }
  .stats { padding: 24px 0; }
  .stats-grid { gap: 16px; }
  .stats strong { font-size: 22px; }
  .stats span { font-size: 12.5px; }
  .card-grid { grid-template-columns: 1fr; gap: 18px; }
  .card-cover { height: 120px; }
  .cover-letter { font-size: 40px; }
  .card-body { padding: 16px 18px 18px; }
  .page-head { padding: 24px 0 0; }
  .breadcrumb { padding: 14px 0 0; font-size: 12.5px; }
  .breadcrumb a { max-width: 140px; }
  /* 富文本表格在窄屏横向滚动 */
  .detail-content { padding: 20px 16px; }
  .detail-content table { display: block; width: max-content; max-width: 100%; overflow-x: auto; }
  .detail-content th, .detail-content td { padding: 8px 10px; }
  .detail-content h2 { font-size: 18px; }
  .detail-meta { gap: 10px; font-size: 12.5px; }
  .tag-item { padding: 14px 16px; }
  .tag-item strong { flex-basis: 100%; order: -1; }
  .page-btn { min-width: 34px; padding: 7px 11px; font-size: 13px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; padding: 40px 16px 24px; }
  .copyright { font-size: 12px; }
  .more-wrap .btn { width: 100%; }
}

/* ---------- CMS 模板补充：封面图 / 详情头图 / 空态 ---------- */
.card-cover img, .row-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; border-radius: inherit; }
.card-sub { color: var(--muted); font-size: 14px; }
.detail-cover { width: 100%; border-radius: 10px; margin: 4px 0 20px; display: block; }
.empty { text-align: center; color: var(--muted); padding: 48px 0; grid-column: 1 / -1; }