:root{
  --bg:#FAFAFC;--ink:#14142B;--muted:#5B5B73;--line:rgba(20,20,43,.09);
  --brand:#4B4EF0;--brand-soft:#EEEFFE;
  --sans:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;
  --shadow:0 1px 2px rgba(20,20,43,.04), 0 18px 40px -22px rgba(20,20,43,.28);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.7;letter-spacing:-.005em;-webkit-font-smoothing:antialiased;overflow-x:hidden}
a{color:var(--brand)}
:focus-visible{outline:3px solid var(--brand);outline-offset:3px;border-radius:8px}
.wrap{width:min(820px,92vw);margin-inline:auto}
.wrap--wide{width:min(1180px,92vw)}
.blob{position:absolute;border-radius:50%;filter:blur(70px);opacity:.5;pointer-events:none;z-index:0}
.blob--1{width:460px;height:460px;background:#FFDCE5;top:-200px;right:-140px}
.blob--2{width:420px;height:420px;background:#DFE5FF;top:200px;left:-220px}

.header{position:sticky;top:0;z-index:50;background:rgba(250,250,252,.85);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:18px;height:72px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.03em;font-size:1.1rem;text-decoration:none;color:var(--ink)}
.brand__mark{width:34px;height:34px;border-radius:11px;background:linear-gradient(140deg,var(--brand),#7A6BFF);display:grid;place-items:center;box-shadow:0 8px 18px -8px rgba(75,78,240,.8)}
.nav__links{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav__links a{text-decoration:none;color:var(--muted);font-size:.93rem;font-weight:600;padding:8px 13px;border-radius:999px}
.nav__links a:hover{color:var(--ink);background:rgba(20,20,43,.05)}
.nav__links a[aria-current="page"]{color:var(--brand);background:var(--brand-soft)}

main{position:relative;z-index:1;padding:clamp(46px,7vw,86px) 0 30px}
.eyebrow{display:inline-flex;font-size:.76rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--brand);background:var(--brand-soft);padding:7px 14px;border-radius:999px}
h1{font-size:clamp(2.1rem,5vw,3.2rem);letter-spacing:-.03em;line-height:1.08;margin:20px 0 14px}
h2{font-size:clamp(1.25rem,2.4vw,1.55rem);letter-spacing:-.02em;margin:46px 0 12px;line-height:1.25}
h3{font-size:1.03rem;margin:26px 0 8px;letter-spacing:-.015em}
p{margin:0 0 16px;color:#33334A}
.meta{color:var(--muted);font-size:.94rem}
ul,ol{color:#33334A;padding-left:22px;margin:0 0 18px}
li{margin-bottom:9px}
.note{background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:16px;padding:20px 24px;box-shadow:var(--shadow);margin:26px 0}
.note p:last-child{margin-bottom:0}
.note p{font-size:.95rem;color:var(--muted)}
.toc{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px 28px;box-shadow:var(--shadow);margin:34px 0 10px}
.toc h4{margin:0 0 12px;font-size:.76rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.toc ol{columns:2;column-gap:28px;padding-left:20px;margin:0;font-size:.94rem}
.toc a{text-decoration:none;font-weight:550}
.toc a:hover{text-decoration:underline}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:var(--shadow);margin:22px 0}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.93rem}
th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--line);vertical-align:top}
th{font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:700}
tr:last-child td{border-bottom:none}
.back{display:inline-flex;align-items:center;gap:9px;text-decoration:none;font-weight:650;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:999px;padding:12px 22px;box-shadow:var(--shadow);margin:44px 0 10px}
.footer{border-top:1px solid var(--line);margin-top:60px;padding:34px 0;position:relative;z-index:1}
.footer__row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.88rem}
.footer__row a{color:var(--muted);text-decoration:none;margin-left:18px}
.footer__row a:first-child{margin-left:0}
.footer__row a:hover{color:var(--ink)}
@media (max-width:640px){
  body{font-size:16px}
  .toc ol{columns:1}
  .nav{height:auto;padding:14px 0}
  .nav__links{margin-left:0;width:100%}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}