/* =====================================================
   航世智联官网 · 共享样式
   设计方向：深松绿 emerald + 冷中性 + sans display（anti-slop / taste-skill）
   ===================================================== */
:root {
  --bg: #ffffff; --bg2: #f5f7fb; --surface: #ffffff; --surface2: #f5f7fb;
  --ink: #0e1726; --ink-soft: #5b6675; --ink-dim: #97a0b0;
  --accent: #2f6df6; --accent2: #1b4fd0; --accent3: #2f6df6;
  --accent-soft: #eaf1fe; --accent-cyan: #06b6d4;
  --on-accent: #ffffff;
  --grad: linear-gradient(135deg, #2f6df6 0%, #2293db 52%, #06b6d4 100%);
  --grad-soft: linear-gradient(135deg, rgba(47,109,246,.10), rgba(47,109,246,.03));
  --line: #e6eaf2; --line-strong: #d4dbe8;
  --glow: rgba(47,109,246,.18);
  --shadow: 0 1px 2px rgba(14,23,38,.04), 0 12px 32px rgba(14,23,38,.07);
  --shadow-lg: 0 18px 48px -20px rgba(14,23,38,.22);
  --radius: 9px; --radius-lg: 14px;
  --display: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", system-ui, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Cascadia Code", ui-monospace, Menlo, monospace;
}
html[data-theme="dark"] {
  --bg: #0b1220; --bg2: #0e1729; --surface: #101a2e; --surface2: #0e1729;
  --ink: #eaf2ff; --ink-soft: #9fb2cf; --ink-dim: #647691;
  --accent: #4d8bff; --accent2: #6ea3ff; --accent3: #4d8bff;
  --accent-soft: rgba(77,139,255,.14); --accent-cyan: #22d3ee;
  --on-accent: #ffffff;
  --grad: linear-gradient(135deg, #4d8bff 0%, #38b6e6 52%, #22d3ee 100%);
  --grad-soft: linear-gradient(135deg, rgba(77,139,255,.14), rgba(77,139,255,.04));
  --line: rgba(150,180,230,.14); --line-strong: rgba(150,180,230,.24);
  --glow: rgba(77,139,255,.28);
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 16px 44px rgba(0,0,0,.5);
  --shadow-lg: 0 30px 80px rgba(0,0,0,.6);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--display);
  line-height: 1.65; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; overflow-x: clip; /* clip 而非 hidden：不创建滚动容器，避免破坏顶栏 position:sticky（往下滑头像/导航不再消失） */
  transition: background-color .3s, color .3s;
}
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 28px; }
h1, h2, h3 { font-family: var(--display); font-weight: 800; letter-spacing: -.03em; line-height: 1.1; text-wrap: balance; }
a { color: inherit; text-decoration: none; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.num { font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }

.logo { display: inline-grid; place-items: center; }
.cmp { display: block; }

/* 背景：克制的双径向光斑（蓝主 + 暖橙点缀），无网格无霓虹 */
.bg-fx { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-fx::before { content: ""; position: absolute; top: -200px; right: -140px; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle at center, var(--glow), transparent 68%); }
.bg-fx::after { content: ""; position: absolute; bottom: -180px; left: -120px; width: 460px; height: 460px; border-radius: 50%;
  background: radial-gradient(circle at center, rgba(6,182,212,.08), transparent 70%); }
.orb { display: none; }

/* 顶栏 */
.nav { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 86%, transparent);
  -webkit-backdrop-filter: saturate(140%) blur(10px); backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; font-size: 19px; letter-spacing: -.02em; }
.brand small { display: block; font-size: 10px; font-weight: 600; letter-spacing: .22em; color: var(--ink-dim); margin-top: 1px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { font-size: 14.5px; color: var(--ink-soft); transition: color .15s; position: relative; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 0; bottom: -22px; height: 2px; background: var(--accent); opacity: 0; transition: opacity .15s; }
.nav-links a:hover, .nav-links a.on { color: var(--ink); }
.nav-links a.on::after { opacity: 1; }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.icon-btn { width: 38px; height: 38px; border: 1px solid var(--line); background: var(--surface); border-radius: var(--radius);
  cursor: pointer; font-size: 16px; color: var(--ink-soft); transition: .15s; }
.icon-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn svg { width: 18px; height: 18px; display: block; margin: auto; }

.acct { position: relative; }
.acct-chip { display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px 5px 5px; border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface); }
.acct-chip:hover { border-color: var(--accent); }
.acct-av { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 13px; font-weight: 700; flex-shrink: 0; }
.acct-name { font-size: 14px; font-weight: 600; color: var(--ink); max-width: 130px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.acct-menu { position: absolute; right: 0; top: calc(100% + 8px); min-width: 150px; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 12px; box-shadow: var(--shadow-lg); padding: 6px; display: none; z-index: 60; }
.acct:hover .acct-menu { display: block; }
.acct-menu a { display: block; padding: 9px 12px; border-radius: 8px; font-size: 13.5px; color: var(--ink-soft); }
.acct-menu a:hover { background: var(--grad-soft); color: var(--ink); }
.staff-link { font-size: 14px; color: var(--ink-soft); }
.staff-link:hover { color: var(--ink); }

.btn { display: inline-flex; align-items: center; gap: 8px; border: 1px solid transparent; border-radius: var(--radius);
  cursor: pointer; font-family: inherit; font-size: 15px; font-weight: 700; padding: 12px 22px; transition: transform .15s, box-shadow .2s, background .2s, border-color .2s; white-space: nowrap; }
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 6px 18px var(--glow); }
.btn-primary:hover { background: var(--accent2); transform: translateY(-1px); box-shadow: 0 10px 26px var(--glow); }
.btn-primary:active { transform: translateY(0) scale(.985); }
.btn-line { background: var(--surface); color: var(--ink); border-color: var(--line-strong); }
.btn-line:hover { border-color: var(--ink); color: var(--ink); }
.btn-line:active { transform: scale(.985); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-white { background: var(--ink); color: var(--bg); }

/* 详情页 hero */
.subhero { padding: 56px 0 24px; }
.breadcrumb { font-size: 13px; color: var(--ink-dim); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--accent); }
.subhero .tag { font-family: var(--mono); font-size: 12.5px; letter-spacing: .1em; color: var(--accent); font-weight: 600; }
.subhero h1 { font-size: clamp(34px, 4.8vw, 56px); margin: 14px 0 16px; }
.subhero .lead { font-size: 17px; color: var(--ink-soft); max-width: 660px; }

/* 锚点导航条 */
.anchor-bar { position: sticky; top: 64px; z-index: 30; background: var(--bg); border-block: 1px solid var(--line); }
.anchor-bar .wrap { display: flex; gap: 22px; height: 52px; align-items: center; overflow-x: auto; }
.anchor-bar a { font-size: 14px; color: var(--ink-soft); white-space: nowrap; }
.anchor-bar a:hover { color: var(--accent); }

/* 详情区块 */
section { padding: 64px 0; position: relative; }
.alt { background: var(--bg2); border-block: 1px solid var(--line); }
.dsplit { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.dsplit.rev .dvis { order: -1; }
.dhead .pen { font-family: var(--mono); font-size: 12.5px; color: var(--accent); letter-spacing: .08em; }
.dhead h2 { font-size: clamp(26px, 3.4vw, 38px); margin: 6px 0 6px; display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.dhead .one { color: var(--ink-soft); font-size: 16.5px; margin-bottom: 22px; max-width: 60ch; }
.feat { list-style: none; display: grid; gap: 14px; }
.feat li { display: grid; grid-template-columns: 24px 1fr; gap: 12px; align-items: start; }
.feat .fi { width: 22px; height: 22px; border-radius: 6px; background: var(--grad-soft); border: 1px solid var(--line-strong);
  display: grid; place-items: center; margin-top: 3px; color: var(--accent); }
.feat .fi svg { width: 13px; height: 13px; }
.feat b { font-size: 15px; }
.feat span { color: var(--ink-soft); font-size: 14px; }

/* 视觉占位卡（产品 mock） */
.dvis { position: relative; }
.mock { border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-lg); overflow: hidden; }
.mock-bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--surface2); }
.mock-bar .d { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.mock-bar .u { margin-left: 10px; font-family: var(--mono); font-size: 12px; color: var(--ink-dim); }
.mock-body { padding: 22px; display: grid; gap: 12px; }
.mock-line { height: 12px; border-radius: 6px; background: var(--grad-soft); }
.mock-line.s { width: 60%; } .mock-line.m { width: 82%; } .mock-line.l { width: 100%; }
.mock-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-top: 6px; }
.mock-cell { height: 56px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface2); display: grid; place-items: center; color: var(--accent); }
.mock-cell svg { width: 22px; height: 22px; opacity: .9; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 20px; }
.chips li { list-style: none; font-size: 12px; color: var(--ink-soft); border: 1px solid var(--line); border-radius: 999px; padding: 4px 11px; background: var(--surface2); }

/* 能力页栅格 */
.cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.cap { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); transition: border-color .2s, box-shadow .2s, transform .2s; }
.cap:hover { border-color: var(--accent); box-shadow: var(--shadow); transform: translateY(-2px); }
.cap .num { font-family: var(--mono); font-size: 12px; color: var(--accent); letter-spacing: .08em; }
.cap h3 { font-size: 20px; margin: 10px 0 10px; }
.cap ul { list-style: none; display: grid; gap: 9px; }
.cap li { font-size: 14px; color: var(--ink-soft); padding-left: 18px; position: relative; }
.cap li::before { content: ""; position: absolute; left: 0; top: 8px; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* CTA */
.cta-band { position: relative; border-radius: var(--radius-lg); padding: 56px; text-align: center; overflow: hidden;
  background: var(--surface); border: 1px solid var(--line-strong); box-shadow: var(--shadow-lg); }
.cta-band::before { content: ""; position: absolute; inset: 0; background: var(--grad-soft); }
.cta-band > * { position: relative; }
.cta-band h2 { font-size: 30px; margin-bottom: 12px; }
.cta-band p { color: var(--ink-soft); margin-bottom: 26px; max-width: 56ch; margin-inline: auto; }

/* 页脚 */
footer { border-top: 1px solid var(--line); padding: 44px 0 0; background: var(--bg2); }
.foot-in { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 24px; }
.foot-brand .muted { color: var(--ink-dim); font-size: 13px; margin-top: 8px; max-width: 320px; }
.foot-cols { display: flex; gap: 56px; flex-wrap: wrap; }
.foot-col h5 { font-size: 12px; letter-spacing: .08em; color: var(--ink-dim); margin-bottom: 12px; }
.foot-col a { display: block; color: var(--ink-soft); font-size: 13.5px; margin-bottom: 9px; }
.foot-col a:hover { color: var(--accent); }
.foot-bottom { text-align: center; border-top: 1px solid var(--line); margin-top: 40px; padding: 22px 0; }
.foot-bottom .copy { font-size: 12.5px; color: var(--ink-dim); }
.foot-bottom .beian { font-size: 12.5px; color: var(--ink-dim); margin-top: 6px; }
.foot-bottom .beian a:hover { color: var(--accent); }

.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { transition: none; opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .dsplit { grid-template-columns: 1fr; gap: 28px; } .dsplit.rev .dvis { order: 0; }
  .cap-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  section { padding: 48px 0; } .cta-band { padding: 40px 22px; }
}