:root{color-scheme:light;--bg:#f4f6f8;--paper:#fff;--text:#18202a;--muted:#657181;--line:#dce2e8;--accent:#246bfd}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.65}
.shell{width:min(820px,calc(100% - 28px));margin:auto}
.topbar{position:sticky;top:0;background:#fffffff0;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{font-weight:700;color:var(--text);text-decoration:none}.links{display:flex;gap:14px;flex-wrap:wrap}
.links a{color:var(--muted);text-decoration:none;font-size:.92rem}.links a[aria-current=page],.links a:hover,a{color:var(--accent)}
main{padding:34px 0 56px}.paper{background:var(--paper);border:1px solid var(--line);border-radius:18px;padding:clamp(22px,5vw,54px);box-shadow:0 8px 30px #1220340f}
h1{font-size:clamp(1.75rem,5vw,2.55rem);line-height:1.15;margin:0 0 28px}h2,h3{line-height:1.3;margin:2rem 0 .8rem}
p{margin:.8rem 0}ul,ol{padding-left:1.35rem}li+li{margin-top:.45rem}.document>p>strong:only-child{display:block;font-size:1.08rem;margin-top:1.8rem}
.footer{padding:24px 0 38px;color:var(--muted);font-size:.85rem;text-align:center}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.card{display:block;padding:24px;border:1px solid var(--line);border-radius:14px;text-decoration:none;color:var(--text)}.card span{display:block;color:var(--muted);font-size:.92rem;margin-top:6px}
@media(max-width:620px){.nav{align-items:flex-start;flex-direction:column;padding:12px 0}.paper{border-radius:14px}.cards{grid-template-columns:1fr}main{padding-top:20px}}
@media print{.topbar,.footer{display:none}body{background:#fff}.shell{width:100%}.paper{border:0;box-shadow:none;padding:0}}