:root{--bg:#fbfaf7;--card:#fff;--ink:#14171c;--mu:#5d6572;--ln:#e6e3dc;--ac:#e8501c;--ac2:#fff1ea;--ok:#12805c;--ok2:#e7f6ef;--wn:#a86400;--wn2:#fff4dc;--bad:#c2261f;--bad2:#fdebea;--mono:'JetBrains Mono',ui-monospace,Menlo,monospace;--sans:'Inter',system-ui,sans-serif}
*{box-sizing:border-box;margin:0}html{scroll-behavior:smooth}
body{font:16px/1.65 var(--sans);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
a{color:inherit}.wrap{max-width:1120px;margin:0 auto;padding:0 24px}
:focus-visible{outline:2px solid var(--ac);outline-offset:3px;border-radius:4px}
header{position:sticky;top:0;z-index:10;background:rgba(251,250,247,.85);backdrop-filter:blur(10px);border-bottom:1px solid var(--ln)}
header .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;gap:10px;align-items:center;font-weight:700;letter-spacing:-.02em;text-decoration:none;font-size:18px}
nav{display:flex;gap:26px;align-items:center}nav a{text-decoration:none;color:var(--mu);font-size:15px}nav a:hover,nav a[aria-current]{color:var(--ink)}
.btn{display:inline-block;background:var(--ink);color:#fff;border:0;padding:12px 20px;border-radius:9px;font:600 15px var(--sans);text-decoration:none;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-1px);background:#000}.btn.ac{background:var(--ac);color:#fff}.btn.ac:hover{background:#cf4414}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--ln)}.btn.ghost:hover{background:#fff}.btn:disabled{opacity:.6}
nav a.btn{color:#fff}
.pill{display:inline-flex;gap:8px;align-items:center;font:500 13px var(--mono);padding:5px 12px;border:1px solid var(--ln);border-radius:99px;background:#fff;color:var(--mu)}
.pill i{width:7px;height:7px;border-radius:50%;background:var(--ok);animation:p 1.6s infinite}@keyframes p{50%{opacity:.3}}
h1{font-size:clamp(2.3rem,5.4vw,4rem);line-height:1.05;letter-spacing:-.035em;font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.3rem);line-height:1.15;letter-spacing:-.025em;margin-bottom:14px}
h3{font-size:1.1rem;margin-bottom:8px}.lead{font-size:1.2rem;color:var(--mu);max-width:56ch;margin:20px 0 30px}
.hl{background:linear-gradient(transparent 62%,var(--ac2) 62%);color:var(--ac)}
.hero{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:84px 0 72px}
.row{display:flex;gap:12px;flex-wrap:wrap}
section{padding:72px 0}.alt{background:#fff;border-block:1px solid var(--ln)}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:28px}
.card{background:var(--card);border:1px solid var(--ln);border-radius:14px;padding:26px}.card p,.mu{color:var(--mu)}
.num{font:600 13px var(--mono);color:var(--ac);margin-bottom:10px;display:block}
.code{background:#14171c;color:#d7dbe2;border-radius:14px;font:13px/1.8 var(--mono);overflow:hidden;box-shadow:0 24px 50px -24px rgba(20,23,28,.45)}
.code .bar{padding:11px 16px;border-bottom:1px solid #2a2f38;color:#8b94a3;font-size:12px}.code .ln{padding:2px 18px;white-space:pre-wrap}
.code .rm{background:rgba(232,80,28,.16);color:#ffb59c}.code .ad{background:rgba(18,128,92,.2);color:#8be0be}
.code .note{margin:12px 16px 16px;padding:12px 14px;border-radius:9px;background:#1d222b;color:#e8c78a;font-family:var(--sans);font-size:13px;line-height:1.5}
.tools{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.tools label{font:600 13px var(--mono);color:var(--mu);display:flex;justify-content:space-between;align-items:center;margin-bottom:6px;gap:8px}
.tools input[type=file]{font:12px var(--sans);max-width:55%}
textarea{width:100%;height:300px;resize:vertical;border:1px solid var(--ln);border-radius:12px;padding:14px;font:12.5px/1.6 var(--mono);background:#fff;color:var(--ink)}
input[type=email],input[type=text]{flex:1 1 240px;padding:13px 15px;border:1px solid var(--ln);border-radius:9px;font:15px var(--sans);background:#fff}
input:focus,textarea:focus{border-color:var(--ac);outline:0;box-shadow:0 0 0 3px var(--ac2)}
#summary{display:flex;gap:12px;margin:24px 0 16px;flex-wrap:wrap}
.stat{padding:12px 20px;border-radius:12px;display:flex;gap:10px;align-items:baseline;border:1px solid var(--ln)}.stat b{font-size:1.7rem;font-family:var(--mono)}
.stat.breaking{background:var(--bad2);color:var(--bad)}.stat.warning{background:var(--wn2);color:var(--wn)}.stat.safe{background:var(--ok2);color:var(--ok)}
.finding{background:#fff;border:1px solid var(--ln);border-left:4px solid;border-radius:10px;padding:12px 16px;margin-bottom:8px;display:grid;grid-template-columns:96px 1fr;gap:4px 14px;align-items:center}
.finding p{grid-column:2;color:var(--mu);font-size:14px}.finding code{font:13px var(--mono);word-break:break-all}
.finding.breaking{border-left-color:var(--bad)}.finding.warning{border-left-color:var(--wn)}.finding.safe{border-left-color:var(--ok)}
.tag{font:600 11px var(--mono);text-transform:uppercase;letter-spacing:.06em}.breaking .tag{color:var(--bad)}.warning .tag{color:var(--wn)}.safe .tag{color:var(--ok)}
.err{color:var(--bad);font-weight:500}.msg{font-size:14px;margin-top:10px;min-height:22px;color:var(--ok)}.msg.err{color:var(--bad)}
table{width:100%;border-collapse:collapse;font-size:14.5px;background:#fff;border:1px solid var(--ln);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:11px 16px;border-bottom:1px solid var(--ln)}th{background:#f4f2ec;font:600 12px var(--mono);text-transform:uppercase;letter-spacing:.05em;color:var(--mu)}
td code{font:13px var(--mono);background:#f4f2ec;padding:2px 6px;border-radius:5px}
.s{font:600 12px var(--mono)}.s.b{color:var(--bad)}.s.w{color:var(--wn)}.s.g{color:var(--ok)}
.prose{max-width:760px}.prose h2{margin-top:48px}.prose p,.prose li{color:var(--mu);margin:12px 0}.prose ul{padding-left:20px}
footer{border-top:1px solid var(--ln);padding:32px 0;color:var(--mu);font-size:14px}footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.rv{opacity:0;transform:translateY(14px);transition:opacity .6s,transform .6s}.rv.in{opacity:1;transform:none}
@media(max-width:860px){.hero,.grid3,.grid2,.tools{grid-template-columns:1fr}nav a:not(.btn){display:none}.finding{grid-template-columns:1fr}.finding p{grid-column:1}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}.rv{opacity:1;transform:none}}