:root{--navy:#1c2430;--gold:#d4a851;--bg:#f7f5f0;--surface:#fff;--raised:#fbfaf7;--fg:#1c2430;--muted:#5d6672;--line:#e6e1d6;--err:#d93d42;--warn:#2f6fe0;--accent:#1c64f2;--accent-fg:#fff;--band:#1c2430;--band-fg:#fff;--band-muted:#c8cfd9;--band-line:#3a4554;--band-btn:#263040;--shadow:0 20px 40px rgba(28,36,48,.08);--card-shadow:0 10px 24px rgba(16,24,40,.16);color-scheme:light}
:root[data-theme="dark"]{--bg:#12161d;--surface:#1a2029;--raised:#161b23;--fg:#e9edf2;--muted:#a3adba;--line:#2b3441;--err:#ff6b6f;--warn:#6aa5ff;--accent:#5b95ff;--accent-fg:#0d1420;--band:#0c1016;--band-line:#2b3441;--band-btn:#1a2029;--shadow:none;--card-shadow:0 10px 24px rgba(0,0,0,.45);color-scheme:dark}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans",sans-serif;overflow-wrap:break-word}
a{color:inherit}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:1080px;margin:0 auto;padding:0 max(16px,env(safe-area-inset-left)) 0 max(16px,env(safe-area-inset-right))}
.top{position:sticky;top:0;z-index:5;background:var(--bg);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:20px;min-height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;text-decoration:none;min-height:44px}
nav{display:flex;gap:20px;margin-left:auto}
nav a,.langs a{text-decoration:none;color:var(--muted);font-size:15px;display:inline-flex;align-items:center;min-height:44px}
nav a:hover,.langs a:hover{color:var(--fg)}
.langs{display:flex;gap:12px}
.langs a[aria-current]{color:var(--fg);font-weight:700}
.theme-switch{display:inline-flex;border:1px solid var(--line);border-radius:8px;padding:2px;background:var(--raised)}
.theme-switch button{border:0;background:transparent;color:var(--muted);font:inherit;font-size:13px;padding:4px 10px;border-radius:6px;cursor:pointer;min-height:32px}
.theme-switch button[aria-pressed="true"]{background:var(--surface);color:var(--fg);font-weight:600;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.hero{padding:72px 0 64px}
.hero-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:center}
h1{font-size:clamp(32px,5vw,52px);line-height:1.12;letter-spacing:-.02em;margin:0 0 20px}
h1 u{text-decoration:underline wavy var(--err);text-decoration-thickness:3px;text-underline-offset:8px;text-decoration-skip-ink:none}
h2{font-size:clamp(24px,3.4vw,34px);letter-spacing:-.015em;margin:0 0 16px;line-height:1.2}
h3{margin:0 0 6px;font-size:18px}
.lead{font-size:19px;color:var(--muted);max-width:34em;margin:0 0 28px}
.ctas{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;min-height:48px;padding:12px 20px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--fg);text-decoration:none;font-weight:600}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
:root[data-theme="dark"] .btn.primary{background:var(--gold);border-color:var(--gold);color:var(--navy)}
.demo{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:44px 24px 104px;box-shadow:var(--shadow)}
.demo .win{position:absolute;top:16px;left:18px;display:flex;gap:6px}
.demo .win i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.demo p{margin:0;font-size:17px;line-height:1.9}
.demo .e,.demo .w{text-decoration:underline wavy var(--err);text-decoration-thickness:1.5px;text-underline-offset:4px;text-decoration-skip-ink:none}
.demo .w{text-decoration-color:var(--warn)}
.demo .card{position:absolute;left:72px;bottom:20px;display:grid;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;box-shadow:var(--card-shadow);font-size:14px}
.demo .card b{display:flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--err)}
.fix{justify-self:start;background:var(--accent);color:var(--accent-fg);font-weight:600;padding:3px 10px;border-radius:6px}
.feats{padding:64px 0;background:var(--surface);border-block:1px solid var(--line)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
.grid article{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--raised)}
.grid p{margin:0;color:var(--muted);font-size:15.5px}
.split{padding:64px 0}
.two{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.two p{color:var(--muted)}
.two a,.doc a{color:var(--accent)}
.dl{padding:64px 0;background:var(--band);color:var(--band-fg)}
.dl p{color:var(--band-muted)}
.dl .btn{border-color:var(--band-line);background:var(--band-btn);color:var(--band-fg)}
.dl .btn.primary{background:var(--gold);border-color:var(--gold);color:var(--navy)}
.ver{font-size:15px}
.muted{color:var(--muted)}
footer{padding:28px 0 max(28px,env(safe-area-inset-bottom));font-size:14px;color:var(--muted)}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px}
footer a{display:inline-block;padding:4px 0}
.doc{max-width:760px;margin:0 auto;padding:48px 16px}
.doc h1{font-size:clamp(28px,6vw,36px)}
.doc section{border-top:1px solid var(--line);padding-top:28px;margin-top:28px}
.doc li{margin:6px 0}
@media (max-width:860px){
  .hero-grid,.two{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  nav{display:none}
  .langs{margin-left:auto}
  .hero{padding:40px 0}
  .feats,.split,.dl{padding:48px 0}
}
@media (max-width:480px){
  .top .wrap{flex-wrap:wrap;gap:4px 12px;padding-block:6px}
  .theme-switch{order:3;width:100%;justify-content:center}
  .theme-switch button{flex:1}
  .lead{font-size:17px}
  .demo{padding:40px 16px 112px}
  .demo .card{left:16px;right:16px}
  .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}