/* ============================================================
   ZHALE.ME PRO — Shared Design System
   ============================================================ */
/* 本地字体(中国大陆访问 Google Fonts 常被墙/很慢,改用 /fonts 本地 woff2 + 系统中文兜底) */
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/JetBrainsMono-400.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/JetBrainsMono-500.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/JetBrainsMono-600.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/JetBrainsMono-600.woff2) format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/NotoSansSC-400.woff2) format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:500;font-display:swap;src:url(/fonts/NotoSansSC-500.woff2) format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:600;font-display:swap;src:url(/fonts/NotoSansSC-600.woff2) format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:700;font-display:swap;src:url(/fonts/NotoSansSC-700.woff2) format('woff2')}
@font-face{font-family:'Noto Sans SC';font-style:normal;font-weight:900;font-display:swap;src:url(/fonts/NotoSansSC-700.woff2) format('woff2')}

:root{
  color-scheme:dark;
  --bg:#070708;
  --bg-1:#0a0a0c;
  --bg-elev:#111114;
  --bg-card:#0e0e10;
  --line:#1f1f24;
  --line-soft:#161619;
  --fg:#f4f4f5;
  --fg-dim:#a1a1aa;
  --fg-muted:#71717a;
  --fg-faint:#52525b;
  --nav-bg:rgba(7,7,8,.78);       /* 顶栏毛玻璃底(随主题切换) */
  --glass-bg:rgba(20,20,22,.7);   /* 地图图例/浮层毛玻璃底 */
  --accent:#ff5436;
  --accent-2:#ff8d72;
  --accent-soft:rgba(255,84,54,.14);
  --signal:#4ade80;
  --signal-soft:rgba(74,222,128,.14);
  --ai:#8b7bff;
  --ai-2:#b6abff;
  --ai-soft:rgba(139,123,255,.14);
  --warn:#fbbf24;
  --down:#ef4444;
  --ct:#22d3ee;      /* telecom 电信 */
  --cu:#a78bfa;      /* unicom 联通 */
  --cm:#34d399;      /* mobile 移动 */
  --radius:10px;
  --radius-lg:16px;
  --radius-xl:22px;
  --maxw:1240px;
  --font-sans:"Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono:"JetBrains Mono", ui-monospace, "SF Mono", Consolas, monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{background:var(--bg)}

/* ============================================================
   主题 · 深色(默认) / 浅色 / 跟随系统
   - 默认(无 data-theme 或 data-theme="system")跟随系统:OS 浅色时走浅色 token。
   - data-theme="light" 强制浅色;data-theme="dark" 强制深色(=默认 token)。
   - 首页/probe 页 <head> 内联脚本会在 CSS 前把 data-theme 写到 <html>,避免闪烁。
   - 浅色 token 在两处重复(系统浅色 + 显式浅色),保持完全一致。
   ============================================================ */
@media (prefers-color-scheme: light){
  :root:not([data-theme="dark"]){
    color-scheme:light;
    --bg:#f6f6f8;
    --bg-1:#ffffff;
    --bg-elev:#ffffff;
    --bg-card:#ffffff;
    --line:#e5e5ea;
    --line-soft:#eef0f2;
    --fg:#18181b;
    --fg-dim:#3f3f46;
    --fg-muted:#6b7280;
    --fg-faint:#9ca3af;
    --accent-soft:rgba(255,84,54,.1);
    --signal-soft:rgba(74,222,128,.16);
    --ai:#6553d9;
    --ai-2:#5b4bd6;
    --ai-soft:rgba(101,83,217,.12);
    --nav-bg:rgba(255,255,255,.82);
    --glass-bg:rgba(255,255,255,.8);
  }
}
:root[data-theme="light"]{
  color-scheme:light;
  --bg:#f6f6f8;
  --bg-1:#ffffff;
  --bg-elev:#ffffff;
  --bg-card:#ffffff;
  --line:#e5e5ea;
  --line-soft:#eef0f2;
  --fg:#18181b;
  --fg-dim:#3f3f46;
  --fg-muted:#6b7280;
  --fg-faint:#9ca3af;
  --accent-soft:rgba(255,84,54,.1);
  --signal-soft:rgba(74,222,128,.16);
  --ai:#6553d9;
  --ai-2:#5b4bd6;
  --ai-soft:rgba(101,83,217,.12);
  --nav-bg:rgba(255,255,255,.82);
  --glass-bg:rgba(255,255,255,.8);
}

/* 数据可视化 / 影院级暗屏组件(地图、AI 控制台、NOC 大屏、开场动画、CTA 暗底)
   在任何主题下都保持深色:就地把灰阶 token 复位为深色值,内部 var(--fg) 等自然读到
   浅色文字,配合它们各自硬编码的深色背景。深色主题下本块与默认值一致(无副作用)。 */
.on-dark{
  color-scheme:dark;
  --bg:#070708;
  --bg-1:#0a0a0c;
  --bg-elev:#111114;
  --bg-card:#0e0e10;
  --line:#1f1f24;
  --line-soft:#161619;
  --fg:#f4f4f5;
  --fg-dim:#a1a1aa;
  --fg-muted:#71717a;
  --fg-faint:#52525b;
  --accent-soft:rgba(255,84,54,.14);
  --signal-soft:rgba(74,222,128,.14);
  --ai:#8b7bff;
  --ai-2:#b6abff;
  --ai-soft:rgba(139,123,255,.14);
  --glass-bg:rgba(20,20,22,.7);
}
body{
  font-family:var(--font-sans);
  background:var(--bg);
  color:var(--fg);
  font-size:15px;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  font-feature-settings:"tnum","ss01";
}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
::selection{background:var(--accent);color:#0a0a0a}
.mono{font-family:var(--font-mono);font-feature-settings:"tnum","zero"}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}
img{max-width:100%}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  height:34px;padding:0 14px;border-radius:8px;
  font-size:13px;font-weight:500;letter-spacing:-.005em;
  border:1px solid transparent;
  transition:transform .12s ease, background .15s, border-color .15s, color .15s, box-shadow .15s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-ghost{color:var(--fg-dim);background:transparent}
.btn-ghost:hover{color:var(--fg)}
.btn-outline{color:var(--fg);background:transparent;border-color:var(--line)}
.btn-outline:hover{border-color:#3a3a3f;background:var(--bg-elev)}
.btn-primary{
  background:var(--accent);color:#0b0b0c;
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset, 0 6px 24px rgba(255,84,54,.28);
}
.btn-primary:hover{background:#ff6a4f;box-shadow:0 1px 0 rgba(255,255,255,.2) inset, 0 8px 30px rgba(255,84,54,.4)}
.btn-ai{
  background:var(--ai);color:#0b0b0c;
  box-shadow:0 1px 0 rgba(255,255,255,.18) inset, 0 6px 24px rgba(139,123,255,.32);
}
.btn-ai:hover{background:#9d8fff}
.btn-lg{height:46px;padding:0 22px;font-size:14.5px;border-radius:10px}
.btn .arr{transition:transform .15s}
.btn:hover .arr{transform:translateX(3px)}

/* ===== Nav ===== */
.nav{
  position:sticky;top:0;z-index:60;
  background:var(--nav-bg);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:62px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{height:24px;display:grid;place-items:center}
.brand-mark img{height:100%;width:auto;display:block;filter:drop-shadow(0 0 14px rgba(255,84,54,.25))}
.nav-links{display:flex;align-items:center;justify-content:center;gap:20px;min-width:0;flex:1;font-size:13.5px;color:var(--fg-dim)}
.nav-links a{transition:color .15s}
.nav-links a:hover{color:var(--fg)}
.nav-links .with-arrow::after{content:"↗";font-size:10px;margin-left:4px;color:var(--fg-faint)}
.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}

/* ===== Theme toggle (系统 / 浅色 / 深色) ===== */
.theme-toggle{display:inline-flex;align-items:center;gap:2px;padding:2px;border:1px solid var(--line);border-radius:999px;background:var(--bg-elev);flex-shrink:0}
.theme-toggle button{display:inline-flex;align-items:center;gap:5px;height:28px;padding:0 9px;border:0;background:transparent;color:var(--fg-muted);border-radius:999px;font-family:inherit;font-size:12px;line-height:1;transition:color .15s,background .15s}
.theme-toggle button:hover{color:var(--fg)}
.theme-toggle button.on{background:var(--accent-soft);color:var(--accent)}
.theme-toggle button .ti{font-size:13px}
.theme-toggle button .tl{letter-spacing:.01em}
@media (max-width:1380px){
  .nav-links{gap:16px;font-size:13px}
  .nav-cta{gap:6px}
  .nav-cta .btn-ghost,.nav-cta .btn-outline{display:none}
  .theme-toggle button{padding:0 7px}
  .theme-toggle button .tl{display:none}
}

/* ===== Topbar ===== */
.topbar{border-bottom:1px solid var(--line);background:var(--bg);font-size:12.5px;color:var(--fg-dim)}
.topbar-inner{display:flex;align-items:center;gap:14px;height:36px;overflow:hidden}
.topbar-tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 8px;
  border:1px solid var(--line);border-radius:999px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.04em;color:var(--fg-dim);background:var(--bg-elev);
}
.topbar-tag .dot{width:5px;height:5px;border-radius:999px;background:var(--accent);box-shadow:0 0 8px var(--accent)}
.topbar-msg{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--fg-muted)}
.topbar-msg strong{color:var(--fg)}

/* ===== Section primitives ===== */
section{position:relative}
.section{padding:120px 0;border-bottom:1px solid var(--line-soft)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:40px;margin-bottom:56px}
.section-head .left{max-width:58ch}
.kicker{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;
  color:var(--accent);text-transform:uppercase;margin-bottom:18px;
}
.kicker.ai{color:var(--ai)}
.kicker .num{color:var(--fg-faint)}
h2.section-title{margin:0;font-size:clamp(28px,3.6vw,46px);line-height:1.1;letter-spacing:-.025em;font-weight:700;text-wrap:balance}
.section-sub{margin-top:16px;font-size:16px;color:var(--fg-dim);max-width:56ch;text-wrap:pretty}
.section-head .right{color:var(--fg-muted);font-size:12.5px;font-family:var(--font-mono);flex-shrink:0;text-align:right}

/* ===== Map legend pills ===== */
.legend-pill{
  display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;
  background:var(--glass-bg);border:1px solid var(--line);backdrop-filter:blur(4px);
  font-family:var(--font-mono);font-size:11.5px;color:var(--fg-dim);
}
.legend-pill .d{width:6px;height:6px;border-radius:999px}
.d-ct{background:var(--ct);box-shadow:0 0 8px var(--ct)}
.d-cu{background:var(--cu);box-shadow:0 0 8px var(--cu)}
.d-cm{background:var(--cm);box-shadow:0 0 8px var(--cm)}
.d-down{background:var(--down);box-shadow:0 0 8px var(--down)}
.d-accent{background:var(--accent);box-shadow:0 0 8px var(--accent)}

/* ===== Footer ===== */
footer{padding:64px 0 40px;color:var(--fg-muted);font-size:13px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.foot-grid h5{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--fg-muted);margin:0 0 14px;font-weight:500;font-family:var(--font-mono)}
.foot-grid ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}
.foot-grid li a{color:var(--fg-dim);transition:color .15s}
.foot-grid li a:hover{color:var(--fg)}
.foot-brand{max-width:34ch}
.foot-brand p{margin:14px 0 0;color:var(--fg-muted);font-size:13px;line-height:1.6}
.foot-bottom{
  padding-top:28px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;
  font-size:12px;color:var(--fg-faint);font-family:var(--font-mono);
}
.foot-bottom a{color:var(--fg-muted)}
.foot-bottom a:hover{color:var(--fg)}

/* ===== Pulse dot ===== */
.pulse{position:relative;width:8px;height:8px;border-radius:999px;background:var(--signal)}
.pulse::after{content:"";position:absolute;inset:-3px;border-radius:999px;background:var(--signal);opacity:.4;animation:pulse 1.8s ease-out infinite}
@keyframes pulse{0%{transform:scale(.6);opacity:.5}100%{transform:scale(2.3);opacity:0}}

/* ===== Utility ===== */
.grid-bg{
  background-image:
    linear-gradient(transparent 95%, rgba(255,255,255,.03) 95%),
    linear-gradient(90deg, transparent 95%, rgba(255,255,255,.03) 95%);
  background-size:32px 32px,32px 32px;
}
@media (max-width:1080px){
  .section-head{flex-direction:column;align-items:start;gap:18px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:720px){
  .nav-links{display:none}
  .section{padding:80px 0}
  .foot-grid{grid-template-columns:1fr 1fr;gap:24px}
}
