:root{--bg:#f7f8fa;--card:#fff;--ink:#16202e;--muted:#5b6678;--line:#e3e7ee;--brand:#0b6bcb;--brand-ink:#fff;--bad:#c2410c;--bad-bg:#fff4ed;--warn:#a16207;--warn-bg:#fefce8;--good:#15803d;--radius:12px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--brand)}
.wrap{max-width:960px;margin:0 auto;padding:0 16px}
header.top{background:#fff;border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:20px;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--brand)}
nav a{margin-left:18px;text-decoration:none;color:var(--muted);font-size:15px}
.hero{padding:48px 0 24px}
.hero h1{font-size:clamp(28px,5vw,44px);line-height:1.12;margin:0 0 14px;letter-spacing:-.02em}
.hero p.lead{font-size:clamp(17px,2.3vw,20px);color:var(--muted);max-width:680px;margin:0 0 24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
#drop{border:2px dashed #b9c3d3;border-radius:var(--radius);padding:32px 20px;text-align:center;background:#fff;transition:.15s}
#drop.over{border-color:var(--brand);background:#eef5fd}
#drop p{margin:6px 0}
.btn{display:inline-block;background:var(--brand);color:var(--brand-ink);border:0;border-radius:8px;padding:12px 20px;font-size:16px;font-weight:600;cursor:pointer;text-decoration:none}
.btn:hover{filter:brightness(1.08)}
.btn:disabled{opacity:.6;cursor:default}
.btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand)}
.btn.small{padding:8px 14px;font-size:14px}
.row{display:flex;gap:12px;flex-wrap:wrap;justify-content:center;margin-top:14px}
.muted{color:var(--muted)}
.tiny{font-size:13px;color:var(--muted)}
#upload-error{color:var(--bad);font-weight:600;min-height:1em}
#results{margin-top:28px}
.note{background:#eef5fd;border:1px solid #cfe2f8;padding:10px 14px;border-radius:8px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin:16px 0}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column}
.stat .k{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.stat .v{font-size:32px;font-weight:800}
.stat .s{font-size:14px;color:var(--muted)}
.stat.bad{background:var(--bad-bg);border-color:#fed7aa}.stat.bad .v{color:var(--bad)}
.stat.warn{background:var(--warn-bg);border-color:#fde68a}.stat.warn .v{color:var(--warn)}
.cats{display:grid;gap:8px}
.cat{display:flex;justify-content:space-between;gap:12px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px}
.cat span{display:block;color:var(--muted);font-size:14px}
.cat .amt{text-align:right;font-weight:800;color:var(--bad);white-space:nowrap}
.cat .amt small{display:block;font-weight:400;color:var(--muted)}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px 14px;margin:12px 0}
summary{cursor:pointer;font-weight:700}
table{width:100%;border-collapse:collapse;margin-top:10px;font-size:15px}
th,td{text-align:left;padding:7px 6px;border-bottom:1px solid var(--line)}
th{font-size:13px;color:var(--muted);font-weight:600}
td:nth-child(2),td:nth-child(3),th:nth-child(2),th:nth-child(3){text-align:right;white-space:nowrap}
.tag{background:#f1f3f7;border-radius:6px;padding:2px 7px;font-size:13px}
textarea{width:100%;font:14px/1.5 ui-monospace,Menlo,Consolas,monospace;border:1px solid var(--line);border-radius:8px;padding:10px;background:#fbfcfd}
.good{color:var(--good);font-weight:600}
.cta-box{background:#0f2540;color:#e8eef7;border-radius:var(--radius);padding:24px;margin-top:28px}
.cta-box h3{margin-top:0;color:#fff}
.cta-box p{color:#c3cfdf}
form.signup{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
form.signup input,form.signup select{flex:1 1 200px;padding:12px;border:1px solid #c9d1de;border-radius:8px;font-size:16px;min-width:0;background:#fff;color:var(--ink)}
form.signup .form-msg{flex-basis:100%;margin:0;min-height:1.2em;font-weight:600}
.cta-box .form-msg.ok{color:#86efac}.form-msg.ok{color:var(--good)}.form-msg.err{color:#fb923c}
section{padding:36px 0}
section h2{font-size:clamp(22px,3.5vw,30px);margin:0 0 12px;letter-spacing:-.01em}
.steps{counter-reset:s;display:grid;gap:12px;padding:0;list-style:none}
.steps li{counter-increment:s;background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px 14px 14px 52px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:14px;top:13px;width:26px;height:26px;border-radius:50%;background:var(--brand);color:#fff;font-weight:700;display:grid;place-items:center;font-size:14px}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.grid3 .card h3{margin:0 0 6px;font-size:18px}
.grid3 .card p{margin:0;color:var(--muted)}
.faq details{margin:8px 0}
footer{border-top:1px solid var(--line);padding:24px 0 40px;color:var(--muted);font-size:14px;margin-top:24px}
article{max-width:720px}
article h1{font-size:clamp(28px,4.5vw,40px);line-height:1.15;letter-spacing:-.02em}
article h2{margin-top:32px}
article code,article .kw{background:#eef1f5;border-radius:5px;padding:1px 6px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.92em}
.callout{background:#fff;border-left:4px solid var(--brand);padding:14px 16px;border-radius:0 10px 10px 0;margin:20px 0}
@media (max-width:560px){nav a.hide-sm{display:none}.stat .v{font-size:28px}td:nth-child(4),th:nth-child(4){display:none}}