:root{--bg:#f4f7fb;--ink:#0e1a2b;--mut:#51607a;--line:#dbe3ee;--card:#fff;--brand:#2150ff;--cta:#ffd23f;--ctat:#1a1400;--ok:#e6f7ee;--no:#fdeceb;color-scheme:light dark}
@media(prefers-color-scheme:dark){:root{--bg:#0b1220;--ink:#eef3fb;--mut:#9fb0c9;--line:#243149;--card:#121c2f;--brand:#7d9bff;--ok:#10281c;--no:#2b1517}}
*{box-sizing:border-box}html{scroll-padding-top:70px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 "Avenir Next","Segoe UI",system-ui,-apple-system,Roboto,sans-serif;padding-bottom:84px;-webkit-text-size-adjust:100%}
main,.top,footer{max-width:820px;margin:0 auto;padding:0 18px}
main{padding-top:22px;padding-bottom:30px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:1.6em 0 .5em}
h1{font-size:clamp(1.9rem,7vw,2.9rem);font-weight:800;margin-top:.4em}
h2{font-size:1.45rem;font-weight:750}h3{font-size:1.1rem}
p,li{max-width:68ch}a{color:var(--brand)}
.lead{font-size:1.15rem;color:var(--mut)}.small{font-size:.85rem;color:var(--mut)}
.top{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding-top:12px;padding-bottom:12px;position:sticky;top:0;background:var(--bg);z-index:20;border-bottom:1px solid var(--line);max-width:none}
.top>*{ }
.logo{font-weight:800;text-decoration:none;color:var(--ink);font-size:1.1rem}
.mb{font:inherit;background:none;border:1px solid var(--line);color:var(--ink);padding:6px 14px;border-radius:99px;display:none}
.js .mb{display:block}.js nav{display:none;width:100%;flex-direction:column;padding-top:8px}.js nav.open{display:flex}
nav{display:flex;gap:4px;flex-wrap:wrap;width:100%}
nav a{padding:9px 4px;color:var(--ink);text-decoration:none;font-weight:600}nav a[aria-current]{color:var(--brand)}
@media(min-width:800px){.js .mb{display:none}.js nav,nav{display:flex!important;flex-direction:row;width:auto;gap:18px;padding:0}.top{flex-wrap:nowrap}}
.btn{display:inline-block;padding:13px 22px;border-radius:12px;font-weight:800;text-decoration:none;text-align:center}
.cta{background:var(--cta);color:var(--ctat);box-shadow:0 2px 0 rgba(0,0,0,.2)}.ghost{border:2px solid var(--line);color:var(--ink)}
.btn:focus-visible,a:focus-visible,summary:focus-visible,.mb:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
.row{display:flex;gap:10px;flex-wrap:wrap}
.hero{padding:10px 0 6px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:22px 0}
.facts div{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px}
.facts b{display:block;font-size:1.9rem;line-height:1;color:var(--brand)}.facts span{font-size:.9rem;color:var(--mut)}
@media(min-width:700px){.facts{grid-template-columns:repeat(4,1fr)}}
.grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;text-decoration:none;color:var(--ink)}
.card b{display:block}.card span{color:var(--mut);font-size:.95rem}.card:hover{border-color:var(--brand)}
.tw{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:12px;background:var(--card)}
table{border-collapse:collapse;width:100%;min-width:480px;font-size:.95rem}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}tr:last-child td{border-bottom:0}th{background:rgba(33,80,255,.08)}td:first-child{font-weight:650}
.pc{display:grid;gap:10px;margin:16px 0}@media(min-width:700px){.pc{grid-template-columns:1fr 1fr}}
.pc>div{border-radius:14px;padding:4px 18px 10px}.pro{background:var(--ok)}.con{background:var(--no)}.pc h3{margin-top:.9em}.pc ul{padding-left:18px;margin:0}
.box{border-left:5px solid var(--brand);background:var(--card);padding:6px 16px;border-radius:0 12px 12px 0;margin:22px 0}.box p{margin:.2em 0 .6em}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:8px 0}summary{cursor:pointer;font-weight:700}
.steps li{margin:.7em 0}
.end{text-align:center;margin:36px 0 10px;padding:26px 18px;background:var(--card);border:1px solid var(--line);border-radius:18px}.end p{margin:0 auto 14px}
footer{padding-bottom:30px;border-top:1px solid var(--line);margin-top:20px;padding-top:20px}
.fl{display:flex;flex-wrap:wrap;gap:6px 16px;margin-bottom:12px}.fl a{font-size:.9rem;color:var(--mut)}
.sticky{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#0e1a2b;color:#fff;box-shadow:0 -4px 18px rgba(0,0,0,.25)}
.sticky span{font-weight:650;font-size:.95rem}.sticky .btn{padding:10px 18px;white-space:nowrap}
@media(prefers-reduced-motion:no-preference){.btn{transition:transform .12s}.btn:active{transform:translateY(1px)}}