:root{
  --bg:#f7faf5;--card:#fff;--ink:#20354a;--muted:#607486;--line:#d9e5df;
  --cyan:#2e84b3;--cyan-soft:#e8f5fb;--green:#4d8a45;--amber:#bd7b28;
  --shadow:0 18px 50px rgba(31,61,82,.1);--radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:
  radial-gradient(circle at 80% 0,rgba(87,185,225,.12),transparent 32rem),
  linear-gradient(180deg,#f8fbf7,#eef5f2);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.72}
a{color:inherit}
.page-shell{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:28px 0 72px}
.page-nav{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:48px}
.brand{font-weight:750;letter-spacing:.03em;text-decoration:none}
.page-nav-links{display:flex;gap:18px;font-size:14px}
.page-nav-links a{color:var(--muted);text-decoration:none}
.page-nav-links a:hover{color:var(--cyan)}
.hero-project{padding:clamp(34px,7vw,84px);border-radius:30px;background:rgba(255,255,255,.82);
  border:1px solid rgba(255,255,255,.92);box-shadow:var(--shadow);backdrop-filter:blur(16px)}
.eyebrow{font-family:ui-monospace,Consolas,monospace;color:var(--cyan);font-size:12px;letter-spacing:.18em;text-transform:uppercase}
h1{font-size:clamp(40px,7vw,78px);line-height:1;letter-spacing:-.035em;margin:16px 0 20px;max-width:900px}
.hero-project p{max-width:760px;color:var(--muted);font-size:clamp(16px,2vw,20px);margin:0}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.button{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;
  background:var(--ink);color:#fff;text-decoration:none;font-weight:650;font-size:14px}
.button.secondary{background:var(--cyan-soft);color:var(--cyan)}
.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:28px;margin-top:28px}
.content-grid>*{min-width:0}
.main-column{display:grid;gap:22px;min-width:0}
.side-column{position:sticky;top:24px;align-self:start;display:grid;gap:14px}
.panel{background:rgba(255,255,255,.8);border:1px solid rgba(255,255,255,.94);border-radius:var(--radius);
  padding:26px;box-shadow:0 12px 34px rgba(31,61,82,.07)}
.panel h2{margin:0 0 14px;font-size:20px}
.panel h3{margin:24px 0 8px;font-size:16px}
.panel p,.panel li{color:var(--muted);font-size:14.5px}
.panel ul{padding-left:20px}
.metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:18px}
.metric{padding:18px;border-radius:14px;background:linear-gradient(160deg,#edf8fb,#fff);border:1px solid #e1eef2}
.metric b{display:block;font-size:27px;color:var(--cyan);line-height:1.1}
.metric span{display:block;margin-top:6px;color:var(--muted);font-size:12.5px}
.stack{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.stack span{padding:6px 11px;border-radius:999px;background:#eef5f1;color:#406153;font-size:12.5px}
.flow{display:grid;gap:10px;margin-top:14px}
.flow-step{display:grid;grid-template-columns:32px minmax(0,1fr);gap:12px;align-items:start}
.flow-step i{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;background:#e4f3f7;
  color:var(--cyan);font-style:normal;font-weight:750;font-size:12px}
.flow-step b{display:block;font-size:14.5px;color:var(--ink)}
.flow-step p{margin:2px 0 0}
.aside-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.aside-list li{display:flex;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding-bottom:10px;font-size:13px}
.aside-list span{color:var(--muted)}
.architecture{width:100%;max-width:100%;overflow:auto;padding:18px;border-radius:14px;background:#08141d;color:#9fe5ff;
  font:12px/1.75 ui-monospace,Consolas,monospace;white-space:pre}
.project-image{width:100%;height:auto;border-radius:14px;border:1px solid var(--line)}
.page-footer{margin-top:52px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);
  display:flex;justify-content:space-between;gap:14px;font-size:13px}
.not-found{min-height:100vh;display:grid;place-items:center;padding:24px}
.not-found .panel{max-width:680px;text-align:center}
.not-found h1{font-size:clamp(64px,18vw,150px);margin:0;color:var(--cyan)}
@media(max-width:820px){
  .content-grid{grid-template-columns:1fr}
  .side-column{position:static;grid-template-columns:1fr 1fr}
  .metrics{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .page-shell{width:min(calc(100% - 24px),1120px);padding-top:14px}
  .page-nav{align-items:flex-start;margin-bottom:28px}
  .page-nav-links{display:none}
  .hero-project{padding:28px 20px;border-radius:22px}
  h1{font-size:42px}
  .side-column,.metrics{grid-template-columns:1fr}
  .panel{padding:20px}
  .page-footer{display:block}
}
@media(prefers-color-scheme:dark){
  :root{--bg:#071018;--card:#0d1b26;--ink:#edf8fc;--muted:#a8becb;--line:#263d4b;
    --cyan:#70d7ff;--cyan-soft:#112d3b;--green:#79d388;--amber:#f0c06a;
    --shadow:0 18px 50px rgba(0,0,0,.3)}
  body{background:radial-gradient(circle at 80% 0,rgba(55,142,184,.22),transparent 32rem),#071018}
  .hero-project,.panel{background:rgba(13,27,38,.88);border-color:#213746}
  .metric{background:linear-gradient(160deg,#122c3a,#0d1b26);border-color:#244353}
  .stack span{background:#132c31;color:#b6ddd0}
  .button{background:#e8f7ff;color:#0b1b25}
  .button.secondary{background:#122e3c;color:#8ee3ff}
}