:root{--bg:#0b0d12;--card:#151922;--bd:#252b38;--fg:#eef1f7;--mut:#9aa3b4;--acc:#5b8cff;--acc2:#a86bff;--ok:#3ddc84}
*{box-sizing:border-box;margin:0;padding:0}
body{font:16px/1.65 -apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased}
a{color:var(--acc);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}
.top{border-bottom:1px solid var(--bd);padding:16px 0;position:sticky;top:0;background:rgba(11,13,18,.92);backdrop-filter:blur(8px);z-index:10}
.top .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.top .nav a{color:var(--mut);margin-left:16px;font-size:14px}
.top .nav a:hover{color:var(--fg)}
.brand{font-weight:800}
h1{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.02em;margin:34px 0 6px}
h2{font-size:24px;font-weight:800;margin:34px 0 12px;padding-top:14px;border-top:1px solid var(--bd)}
h3{font-size:18px;font-weight:700;margin:20px 0 8px;color:#cdd6e8}
p,li{color:#d7dce6}
.lead{color:var(--mut);font-size:18px;margin-bottom:8px}
ul,ol{margin:8px 0 8px 22px}
li{margin:4px 0}
.card{background:var(--card);border:1px solid var(--bd);border-radius:14px;padding:18px 20px;margin:14px 0;transition:border-color .15s,transform .15s,box-shadow .15s,background .15s}
/* Карточки-ссылки: без подчёркивания, подсветка при наведении */
a.card,a.card:hover{text-decoration:none;display:block}
a.card h3{color:var(--fg)}
a.card:hover{border-color:var(--acc);transform:translateY(-3px);background:#1a1f2b;box-shadow:0 8px 24px rgba(91,140,255,.18)}
a.card:hover h3{color:var(--acc)}
.callout{background:linear-gradient(135deg,rgba(91,140,255,.12),rgba(168,107,255,.10));border:1px solid var(--bd);border-left:3px solid var(--acc);border-radius:10px;padding:14px 16px;margin:14px 0}
.quote{border-left:3px solid var(--acc2);padding:6px 14px;color:#c7cede;font-style:italic;margin:10px 0}
.hyp{color:#ffcf70;font-size:13px;font-weight:600}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:14.5px}
th,td{text-align:left;padding:9px 11px;border-bottom:1px solid var(--bd);vertical-align:top}
th{color:#aeb7c7;font-weight:700;background:#11151d}
tr:hover td{background:#11151d}
.pill{display:inline-block;font-size:12px;padding:2px 9px;border-radius:20px;border:1px solid var(--bd);color:var(--mut)}
.ok{color:var(--ok)}.warn{color:#ffcf70}.bad{color:#ff7a7a}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:720px){.grid2{grid-template-columns:1fr}}
footer{border-top:1px solid var(--bd);margin-top:40px;padding:26px 0;color:var(--mut);font-size:14px;text-align:center}
.btn{display:inline-block;background:linear-gradient(135deg,var(--acc),var(--acc2));color:#fff;font-weight:700;padding:12px 22px;border-radius:10px;margin-top:8px}
.tag{font-size:12px;color:var(--mut)}
code{background:#0c0f15;border:1px solid var(--bd);border-radius:5px;padding:1px 6px;font-size:13px}

/* Адаптив: мобильные */
@media(max-width:720px){
  .wrap{padding:0 14px}
  .top .wrap{position:relative;flex-direction:column;align-items:flex-start;gap:8px}
  .top .nav{display:flex;flex-wrap:nowrap;overflow-x:auto;gap:14px;width:100%;-webkit-overflow-scrolling:touch}
  .top .nav a{margin-left:0;white-space:nowrap}
  .top .nav .themebtn{position:absolute;top:14px;right:14px}
  table{display:block;overflow-x:auto;max-width:100%;-webkit-overflow-scrolling:touch}
  h1{font-size:24px}
  h2{font-size:20px}
}

html[data-theme="light"]{--bg:#f5f7fb;--card:#ffffff;--bd:#e4e8f0;--fg:#161b26;--mut:#5c6675;--acc:#3b6fff;--acc2:#8b4bff;--ok:#1c9b54}
.themebtn{background:var(--card);border:1px solid var(--bd);color:var(--fg);border-radius:20px;padding:5px 11px;cursor:pointer;font:inherit;font-size:13px;white-space:nowrap}
.themebtn:hover{border-color:var(--acc)}