:root{--blue:#0866FF;--red:#FF0000;--text:#1C1B1F;--muted:#5f5d66;--line:#e6e6ea;--soft:#f4f7ff;--bg:#fff}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.6;font-size:16px}
a{color:var(--blue)}
.wrap{max-width:820px;margin:0 auto;padding:0 16px}
header.site{border-bottom:1px solid var(--line);background:#fff}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:60px;flex-wrap:wrap}
.mark{font-weight:800;font-size:1.5rem;text-decoration:none;letter-spacing:-.02em}
.mark .c{color:var(--blue)}.mark .b{color:var(--red)}
nav.top a{color:var(--text);text-decoration:none;margin-left:16px;font-weight:600;font-size:.95rem}
nav.top a:hover{color:var(--blue)}
main{padding:32px 0 48px}
h1{font-size:2rem;line-height:1.2;margin:0 0 8px;letter-spacing:-.02em}
h2{font-size:1.25rem;margin:32px 0 8px}
h3{font-size:1.05rem;margin:20px 0 6px}
.meta{color:var(--muted);font-size:.95rem;margin:0 0 24px}
ul,ol{padding-left:22px}
li{margin:4px 0}
table{border-collapse:collapse;width:100%;margin:12px 0;font-size:.95rem}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:var(--soft)}
.table-scroll{overflow-x:auto}
.note{background:var(--soft);border-left:4px solid var(--blue);padding:12px 16px;border-radius:6px;margin:16px 0}
.warn{border-left-color:var(--red)}
.hero{padding:16px 0 8px}
.hero h1{font-size:2.3rem}
.lead{font-size:1.15rem;color:var(--muted);margin:0 0 20px}
.btn{display:inline-block;background:var(--blue);color:#fff;text-decoration:none;font-weight:700;padding:12px 22px;border-radius:999px}
.btn:hover{background:#0050d6}
.steps{list-style:none;padding:0;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));counter-reset:s}
.steps li{border:1px solid var(--line);border-radius:12px;padding:16px;margin:0;counter-increment:s}
.steps li::before{content:counter(s);display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--red);color:#fff;font-weight:800;margin-bottom:8px}
.features{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));padding:0;list-style:none}
.features li{background:var(--soft);border-radius:10px;padding:12px 14px;margin:0}
footer.site{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.9rem}
footer.site nav a{color:var(--muted);margin-right:14px;display:inline-block;margin-bottom:6px}
code,.path{background:var(--soft);padding:1px 6px;border-radius:4px;font-weight:600}
@media (max-width:560px){h1,.hero h1{font-size:1.7rem}nav.top a{margin-left:0;margin-right:14px}}