/* ============================================================
   injection.注塑.公司 — 深海工业风设计系统
   base: #070b14 / steel: #4f9cf7 / cyan: #35e0d2 / gold: #d9b45b
   ============================================================ */
:root {
  --bg: #070b14;
  --bg-2: #0b111f;
  --bg-3: #101828;
  --ink: #e9eef7;
  --ink-2: #b7c2d4;
  --muted: #7f8da3;
  --line: rgba(151, 176, 216, 0.14);
  --line-strong: rgba(151, 176, 216, 0.28);
  --steel: #4f9cf7;
  --steel-deep: #1f4e8c;
  --cyan: #35e0d2;
  --gold: #d9b45b;
  --gold-soft: #eed699;
  --glass: rgba(148, 178, 228, 0.055);
  --glass-strong: rgba(148, 178, 228, 0.10);
  --danger: #f07a6a;
  --ok: #4fd39a;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 18px 50px rgba(2, 6, 16, 0.55);
  --font-display: "Chakra Petch", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", Consolas, monospace;
  --w-main: 1200px;
  --w-article: 780px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: anywhere;
  word-break: break-word;
}
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.35; overflow-wrap: anywhere; word-break: break-word; }
p, li, td, th { overflow-wrap: anywhere; word-break: break-word; }
a { color: var(--steel); text-decoration: none; transition: color .18s; }
a:hover { color: var(--cyan); }
img { max-width: 100%; height: auto; }
::selection { background: rgba(79, 156, 247, .35); }

.wrap { max-width: var(--w-main); margin: 0 auto; padding: 0 28px; }

/* ── 背景氛围：机加工网格 + 光晕 ─────────────────────── */
.bg-fx { position: fixed; inset: 0; z-index: -1; pointer-events: none; background:
  radial-gradient(1000px 520px at 82% -8%, rgba(53, 224, 210, 0.07), transparent 60%),
  radial-gradient(900px 480px at -10% 30%, rgba(79, 156, 247, 0.08), transparent 55%),
  linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 55%, var(--bg) 100%);
}
.bg-fx::after {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(151, 176, 216, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(151, 176, 216, 0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,.85), transparent 72%);
}

/* ── 顶栏 ─────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 20, 0.78);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 28px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--ink); font-family: var(--font-display); font-weight: 600; font-size: 19px; letter-spacing: .5px; }
.brand:hover { color: var(--ink); }
.brand .logo-mark { width: 34px; height: 34px; flex: none; }
.brand small { color: var(--muted); font-size: 11px; display: block; letter-spacing: 2px; line-height: 1; margin-top: 3px; }
.nav { margin-left: auto; display: flex; gap: 4px; }
.nav a {
  color: var(--ink-2); font-size: 15px; padding: 8px 14px; border-radius: 8px;
  border: 1px solid transparent;
}
.nav a:hover, .nav a.active { color: var(--ink); background: var(--glass-strong); border-color: var(--line); }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--line-strong); color: var(--ink); border-radius: 8px; padding: 7px 12px; font-size: 15px; cursor: pointer; }

/* ── 按钮 ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 12px 26px; border-radius: 10px; font-size: 15.5px; font-family: var(--font-display);
  letter-spacing: .5px; cursor: pointer; border: 1px solid transparent;
  transition: transform .18s, box-shadow .18s, background .18s;
}
.btn-gold {
  background: linear-gradient(135deg, #e8c66a, #c99b35);
  color: #1c1608; font-weight: 700;
  box-shadow: 0 8px 26px rgba(217, 180, 91, .22);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(217, 180, 91, .34); color: #1c1608; }
.btn-ghost { border-color: var(--line-strong); color: var(--ink); background: var(--glass); }
.btn-ghost:hover { border-color: var(--steel); color: #fff; transform: translateY(-2px); }

/* ── 首屏 hero ─────────────────────────────────────── */
.hero { position: relative; padding: 92px 0 72px; overflow: hidden; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 3px;
  color: var(--cyan); border: 1px solid rgba(53, 224, 210, .3); border-radius: 999px;
  padding: 6px 16px; margin-bottom: 26px; background: rgba(53, 224, 210, .05);
}
.hero h1 { font-size: 46px; margin: 0 0 20px; font-weight: 700; letter-spacing: 1px; }
.hero h1 .hl { color: transparent; background: linear-gradient(100deg, var(--gold-soft), var(--gold) 60%, #b98d2f); -webkit-background-clip: text; background-clip: text; }
.hero .sub { font-size: 18px; color: var(--ink-2); max-width: 640px; margin: 0 0 34px; }
.hero .cta-row { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 40px; margin-top: 56px; flex-wrap: wrap; }
.hero-stats .stat b { display: block; font-family: var(--font-display); font-size: 27px; color: var(--gold-soft); letter-spacing: 1px; }
.hero-stats .stat span { color: var(--muted); font-size: 13.5px; }
.hero-visual { position: absolute; right: -60px; top: 70px; width: 480px; opacity: .8; pointer-events: none; }

/* ── 区块 ─────────────────────────────────────────── */
.section { padding: 74px 0; border-top: 1px solid var(--line); }
.section-head { margin-bottom: 40px; }
.section-head .en { font-family: var(--font-mono); font-size: 12px; letter-spacing: 3px; color: var(--cyan); text-transform: uppercase; }
.section-head h2 { font-size: 32px; margin: 8px 0 10px; }
.section-head p { color: var(--muted); margin: 0; max-width: 640px; }

/* ── 玻璃卡片 ─────────────────────────────────────── */
.card {
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .22s, border-color .22s, background .22s;
}
.card:hover { transform: translateY(-4px); border-color: var(--line-strong); background: var(--glass-strong); }
.card h3 { margin: 0 0 10px; font-size: 19px; }
.card p { margin: 0; color: var(--ink-2); font-size: 14.8px; }
.card .card-ico { width: 42px; height: 42px; margin-bottom: 16px; }
.card .card-no { font-family: var(--font-mono); font-size: 12px; color: var(--muted); letter-spacing: 2px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }

/* ── 数据表格（table.data —— 骨架契约 table_class） ── */
table.data {
  width: 100%; border-collapse: collapse; margin: 26px 0; font-size: 14.8px;
  background: var(--glass); border-radius: var(--radius-sm); overflow: hidden;
}
table.data caption { caption-side: top; text-align: left; color: var(--muted); font-size: 13px; padding: 0 0 10px; letter-spacing: 1px; }
table.data th {
  text-align: left; font-family: var(--font-display); font-weight: 600; font-size: 14px; letter-spacing: .5px;
  color: var(--gold-soft); background: rgba(217, 180, 91, 0.08);
  border-bottom: 1px solid var(--line-strong); padding: 12px 16px; white-space: nowrap;
}
table.data td { padding: 12px 16px; border-bottom: 1px solid var(--line); color: var(--ink-2); vertical-align: top; }
table.data tr:last-child td { border-bottom: none; }
table.data tbody tr:hover td { background: rgba(79, 156, 247, .06); color: var(--ink); }

/* ── 文章布局 ─────────────────────────────────────── */
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 40px; padding: 48px 0 80px; align-items: start; }
.article-main { min-width: 0; }
.article-title { font-size: 34px; margin: 6px 0 14px; }
.article-meta { display: flex; gap: 18px; color: var(--muted); font-size: 13.5px; flex-wrap: wrap; margin-bottom: 26px; align-items: center; }
.article-meta time { color: var(--cyan); font-family: var(--font-mono); font-size: 12.5px; }

.lead-block {
  background: linear-gradient(135deg, rgba(79, 156, 247, .10), rgba(53, 224, 210, .05));
  border: 1px solid var(--line-strong); border-left: 3px solid var(--steel);
  border-radius: var(--radius-sm); padding: 18px 22px; margin: 0 0 26px; color: var(--ink-2);
}
.kw-line { color: var(--muted); font-size: 13.5px; margin-bottom: 26px; }
.kw-line b { color: var(--gold-soft); font-weight: 600; }

.article-body h2 { font-size: 25px; margin: 44px 0 16px; padding-left: 14px; border-left: 3px solid var(--gold); }
.article-body h3 { font-size: 19px; margin: 30px 0 12px; color: var(--gold-soft); }
.article-body p { color: var(--ink-2); margin: 0 0 16px; }
.article-body ul, .article-body ol { color: var(--ink-2); padding-left: 22px; margin: 0 0 16px; }
.article-body li { margin-bottom: 7px; }
.article-body strong { color: var(--ink); }

.callout {
  background: rgba(217, 180, 91, .07); border: 1px solid rgba(217, 180, 91, .25);
  border-radius: var(--radius-sm); padding: 16px 20px; margin: 26px 0; color: var(--ink-2); font-size: 14.8px;
}
.callout b { color: var(--gold-soft); }

.concl {
  background: linear-gradient(135deg, rgba(53, 224, 210, .07), rgba(79, 156, 247, .07));
  border: 1px solid rgba(53, 224, 210, .25); border-radius: var(--radius-sm);
  padding: 18px 22px; margin: 28px 0;
}
.concl ol { margin: 0; padding-left: 20px; color: var(--ink); }

/* ── TOC 悬浮（sticky，禁 fixed） ──────────────────── */
.toc-aside { position: sticky; top: 92px; max-height: calc(100vh - 120px); overflow-y: auto; }
.toc { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--glass); padding: 18px 20px; font-size: 13.5px; }
.toc .toc-h { font-family: var(--font-display); font-size: 13px; letter-spacing: 2px; color: var(--muted); margin-bottom: 10px; text-transform: uppercase; }
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc li { margin: 0 0 2px; }
.toc a { color: var(--ink-2); display: block; padding: 5px 10px; border-radius: 6px; border-left: 2px solid transparent; }
.toc a:hover { color: var(--cyan); background: rgba(53, 224, 210, .06); border-left-color: var(--cyan); }
.toc li.lv-h3 a { padding-left: 24px; color: var(--muted); font-size: 12.8px; }

/* ── 标签 ─────────────────────────────────────────── */
.tag-text {
  display: inline-block; font-family: var(--font-mono); font-size: 12px; color: var(--cyan);
  border: 1px solid rgba(53, 224, 210, .3); border-radius: 999px; padding: 2px 12px; margin: 0 8px 8px 0;
  background: rgba(53, 224, 210, .05);
}

/* ── FAQ（裸 details —— 骨架契约 faq_dom） ─────────── */
details { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--glass); margin-bottom: 12px; overflow: hidden; }
details summary {
  cursor: pointer; padding: 15px 20px; font-size: 15.5px; color: var(--ink); font-weight: 500;
  list-style: none; position: relative; padding-right: 44px;
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+"; position: absolute; right: 18px; top: 50%; transform: translateY(-50%);
  font-family: var(--font-display); font-size: 19px; color: var(--gold); transition: transform .2s;
}
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details[open] summary { border-bottom: 1px solid var(--line); }
details .faq-a { padding: 14px 20px; color: var(--ink-2); font-size: 14.8px; }

/* ── 面包屑 ───────────────────────────────────────── */
.breadcrumb { padding: 20px 0 0; font-size: 13.2px; color: var(--muted); }
.breadcrumb nav { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb .sep { margin: 0 6px; color: var(--line-strong); }
.breadcrumb .cur { color: var(--ink-2); }

/* ── 列表页：分类左列表（禁止卡片网格） ───────────── */
.list-layout { display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 40px; padding: 40px 0 80px; align-items: start; }
.cat-side { position: sticky; top: 92px; }
.category-list { list-style: none; margin: 0; padding: 0; border: 1px solid var(--line); border-radius: var(--radius-sm); overflow: hidden; background: var(--glass); }
.category-list li + li { border-top: 1px solid var(--line); }
.category-list a { display: block; padding: 13px 18px; color: var(--ink-2); font-size: 14.8px; border-left: 3px solid transparent; }
.category-list a:hover { color: var(--cyan); background: rgba(53, 224, 210, .05); border-left-color: var(--cyan); }
.category-list a.active { color: var(--gold-soft); background: rgba(217, 180, 91, .07); border-left-color: var(--gold); font-weight: 600; }
.cat-side .side-note { margin-top: 18px; font-size: 13px; color: var(--muted); line-height: 1.7; }

.item-list { display: flex; flex-direction: column; gap: 16px; }
.item-card {
  display: block; background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 20px 24px; color: var(--ink); transition: border-color .2s, background .2s, transform .2s;
}
.item-card:hover { border-color: var(--line-strong); background: var(--glass-strong); transform: translateX(4px); color: var(--ink); }
.item-card h3 { margin: 0 0 6px; font-size: 17.5px; }
.item-card p { margin: 0; color: var(--muted); font-size: 13.8px; }
.item-card .item-meta { display: flex; gap: 14px; margin-bottom: 8px; font-family: var(--font-mono); font-size: 11.5px; color: var(--cyan); letter-spacing: 1px; }
.cat-desc { background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 18px 22px; color: var(--ink-2); margin-bottom: 26px; }

.pagination { display: flex; gap: 8px; margin-top: 30px; }
.pagination a, .pagination span { padding: 8px 15px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-2); font-size: 14px; }
.pagination .cur { background: var(--glass-strong); color: var(--gold-soft); border-color: var(--line-strong); }

/* ── 页脚 ─────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--line); background: rgba(6, 9, 17, .85); margin-top: 40px; }
.site-footer .foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding: 52px 0 34px; }
.site-footer h4 { font-size: 14px; letter-spacing: 2px; color: var(--gold-soft); margin: 0 0 14px; font-family: var(--font-display); }
.site-footer p, .site-footer li { color: var(--muted); font-size: 13.8px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 9px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--cyan); }
.foot-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 17px; color: var(--ink); margin-bottom: 12px; }
.record-line {
  display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px 26px;
  border-top: 1px solid var(--line); padding: 18px 0 22px; font-size: 13px; color: var(--muted);
}
.record-line a { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); }
.record-line a:hover { color: var(--ink-2); }
.record-line img { width: 15px; height: 15px; display: block; }
.foot-bottom { text-align: center; color: var(--muted); font-size: 12.5px; padding: 0 0 26px; }

/* ── 悬浮组件：企业微信名片 + 一键到顶 ─────────────── */
.float-bar { position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 80; display: flex; flex-direction: column; gap: 12px; }
.float-btn {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  background: rgba(13, 20, 35, 0.92); border: 1px solid var(--line-strong); cursor: pointer;
  box-shadow: 0 10px 28px rgba(2, 6, 16, .5); transition: transform .18s, border-color .18s;
  backdrop-filter: blur(8px);
}
.float-btn:hover { transform: translateY(-3px); border-color: var(--steel); }
.float-btn svg, .float-btn img { width: 26px; height: 26px; }
.float-btn .fb-label {
  position: absolute; right: 62px; top: 50%; transform: translateY(-50%);
  background: rgba(13, 20, 35, .95); border: 1px solid var(--line-strong); color: var(--ink);
  font-size: 12.5px; padding: 5px 12px; border-radius: 7px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .18s;
}
.float-btn:hover .fb-label { opacity: 1; }
.float-btn.wechat { border-color: rgba(53, 224, 210, .45); }
#toTop { opacity: 0; pointer-events: none; transition: opacity .25s, transform .18s, border-color .18s; }
#toTop.show { opacity: 1; pointer-events: auto; }

/* 企业微信名片弹层 */
.wechat-modal-overlay {
  position: fixed; inset: 0; z-index: 120; background: rgba(4, 7, 14, .78); backdrop-filter: blur(10px);
  display: none; overflow-y: auto; padding: 20px;   /* 内容高于视口时可滚动，关闭按钮始终可达 */
}
.wechat-modal-overlay.open { display: flex; }
.wechat-modal { position: relative; max-width: 380px; width: 100%; margin: auto; }  /* margin:auto 居中：内容超高时自动顶对齐+可滚动 */
.wechat-modal img { max-width: 340px; display: block; margin: 0 auto; border-radius: 12px; }
.wechat-modal .qr-slot svg { width: 100%; height: auto; display: block; }
.wechat-close {
  position: absolute; top: -14px; right: -14px; width: 36px; height: 36px; border-radius: 50%;
  background: var(--bg-3); border: 1px solid var(--line-strong); color: var(--ink); cursor: pointer; font-size: 16px;
  z-index: 10;   /* 压在玻璃卡金边伪元素之上，保证可见可点 */
}

/* ── 金边玻璃名片卡（wechat-card 页） ──────────────── */
.card-stage { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 70px 20px; position: relative; overflow: hidden; }
.card-stage::before {
  content: ""; position: absolute; width: 720px; height: 720px; border-radius: 50%;
  background: radial-gradient(circle, rgba(79, 156, 247, .16), transparent 65%); top: -220px; right: -160px;
}
.card-stage::after {
  content: ""; position: absolute; width: 560px; height: 560px; border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 180, 91, .10), transparent 65%); bottom: -180px; left: -120px;
}
.glass-card {
  position: relative; width: min(430px, 92vw); border-radius: 24px; padding: 40px 36px 34px;
  background: linear-gradient(160deg, rgba(21, 34, 58, .82), rgba(10, 16, 30, .92));
  border: 1px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 30px 80px rgba(2, 6, 16, .7), inset 0 1px 0 rgba(238, 214, 153, .18);
  backdrop-filter: blur(18px);
}
.glass-card::before {
  content: ""; position: absolute; inset: 0; border-radius: 24px; padding: 1px; pointer-events: none;
  background: linear-gradient(140deg, #eed699 0%, rgba(217, 180, 91, .25) 30%, rgba(79, 156, 247, .25) 62%, #d9b45b 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
}
.glass-card .gc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 26px; }
.glass-card .gc-brand { font-family: var(--font-display); letter-spacing: 2px; font-size: 13px; color: var(--gold-soft); }
.glass-card .gc-badge { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 2px; color: var(--muted); border: 1px solid var(--line-strong); border-radius: 999px; padding: 3px 10px; }
.glass-card .gc-avatar {
  width: 62px; height: 62px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1c3255, #0e1a30); border: 1px solid rgba(217, 180, 91, .5);
  font-family: var(--font-display); font-size: 24px; color: var(--gold-soft); margin-bottom: 18px;
}
.glass-card .gc-name { font-size: 27px; font-weight: 700; margin: 0 0 4px; letter-spacing: 2px; }
.glass-card .gc-title { color: var(--cyan); font-size: 14px; letter-spacing: 1px; margin: 0 0 4px; }
.glass-card .gc-co { color: var(--muted); font-size: 13px; margin: 0 0 24px; }
.glass-card .gc-qr {
  width: 196px; height: 196px; margin: 0 auto 20px; padding: 13px; border-radius: 18px;
  background: linear-gradient(160deg, #f4f7fb, #dfe7f2);
  box-shadow: 0 14px 34px rgba(2, 6, 16, .5), inset 0 0 0 1px rgba(217, 180, 91, .35);
}
.glass-card .gc-qr svg { width: 100%; height: 100%; display: block; }
.glass-card .gc-hint { text-align: center; color: var(--ink-2); font-size: 13.5px; margin: 0 0 6px; }
.glass-card .gc-hint b { color: var(--gold-soft); }
.glass-card .gc-foot { display: flex; justify-content: center; gap: 18px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.glass-card .gc-foot span { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 2px; color: var(--muted); }

/* ── 流程时间线 ───────────────────────────────────── */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; counter-reset: step; }
.flow-step { position: relative; padding: 22px 20px 18px; background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-sm); counter-increment: step; }
.flow-step::before {
  content: "0" counter(step); font-family: var(--font-mono); font-size: 12px; color: var(--gold);
  letter-spacing: 2px; display: block; margin-bottom: 10px;
}
.flow-step b { display: block; margin-bottom: 6px; font-size: 15.5px; }
.flow-step span { color: var(--muted); font-size: 13.2px; line-height: 1.7; display: block; }

/* ── 材料表卡片 ───────────────────────────────────── */
.mat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.mat-card { background: var(--glass); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 20px; }
.mat-card b { display: block; font-family: var(--font-mono); font-size: 19px; color: var(--gold-soft); margin-bottom: 8px; letter-spacing: 1px; }
.mat-card .mat-note { color: var(--ink-2); font-size: 13.4px; margin-bottom: 8px; }
.mat-card .mat-app { color: var(--muted); font-size: 12.6px; }

/* ── CTA 带 ───────────────────────────────────────── */
.cta-band {
  border: 1px solid rgba(217, 180, 91, .3); border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(217, 180, 91, .08), rgba(79, 156, 247, .06));
  padding: 42px 46px; display: flex; align-items: center; justify-content: space-between; gap: 26px; flex-wrap: wrap;
}
.cta-band h3 { margin: 0 0 6px; font-size: 24px; }
.cta-band p { margin: 0; color: var(--muted); }

/* ── 归档时间线 ───────────────────────────────────── */
.archive-list { list-style: none; padding: 0; margin: 0; }
.archive-list li { display: flex; gap: 22px; padding: 13px 0; border-bottom: 1px solid var(--line); align-items: baseline; }
.archive-list time { font-family: var(--font-mono); color: var(--cyan); font-size: 13px; flex: none; width: 110px; }
.archive-list a { color: var(--ink-2); }
.archive-list a:hover { color: var(--cyan); }
.archive-list .cat { margin-left: auto; color: var(--muted); font-size: 12.5px; flex: none; }

/* ── 页面 hero（内页头） ──────────────────────────── */
.page-hero { padding: 64px 0 20px; }
.page-hero .en { font-family: var(--font-mono); font-size: 12px; letter-spacing: 3px; color: var(--cyan); text-transform: uppercase; }
.page-hero h1 { font-size: 36px; margin: 8px 0 10px; }
.page-hero p { color: var(--muted); max-width: 620px; margin: 0; }

/* ── 响应式 ───────────────────────────────────────── */
@media (max-width: 1024px) {
  .hero h1 { font-size: 36px; }
  .hero-visual { display: none; }
  .layout { grid-template-columns: 1fr; }
  .toc-aside { position: static; max-height: none; }
  .list-layout { grid-template-columns: 1fr; }
  .cat-side { position: static; }
  .grid-4, .flow, .mat-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .site-footer .foot-grid { grid-template-columns: 1fr 1fr; }
  .nav {
    display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column;
    background: rgba(7, 11, 20, .97); border-bottom: 1px solid var(--line); padding: 12px 20px 18px; gap: 2px;
  }
  .nav.open { display: flex; }
  .menu-btn { display: block; }
  .float-bar { right: 14px; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 18px; }
  .hero { padding: 56px 0 48px; }
  .hero h1 { font-size: 28px; }
  .hero .sub { font-size: 15.5px; }
  .hero-stats { gap: 24px; }
  .section { padding: 52px 0; }
  .section-head h2 { font-size: 25px; }
  .article-title { font-size: 23px; }
  .grid-2, .grid-3, .grid-4, .flow, .mat-grid { grid-template-columns: 1fr; }
  .site-footer .foot-grid { grid-template-columns: 1fr; gap: 26px; }
  .cta-band { padding: 28px 22px; }
  .float-bar { position: fixed; right: 14px; top: auto; bottom: 18px; transform: none; }
  .glass-card { padding: 30px 22px 26px; }
  table.data { font-size: 13.4px; display: block; overflow-x: auto; }
  table.data th, table.data td { white-space: normal; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}