:root{--accent:#009DE0;--accent-dark:#0077B3;--accent-soft:#E6F5FC;--ink:#1B1F24;--muted:#6B7280;--surface:#F6F8FA;--line:#E5E7EB;--bg:#fff;--warn:#FFF4E5;--danger:#B42318}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{color-scheme:light}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
.wrap{max-width:860px;margin:0 auto;padding:24px 20px 64px}
.hero{background:linear-gradient(135deg,#0089C7 0%,#009DE0 45%,#5CC6F0 100%);color:#fff;border-radius:28px;padding:44px 40px 36px;margin:8px 0 40px;box-shadow:0 20px 60px rgba(0,157,224,.25)}
.hero h1{font-size:44px;line-height:1.08;letter-spacing:-.02em;margin:10px 0 16px;font-weight:800}
.hero-lede{font-size:17px;max-width:600px;margin:0 0 22px;opacity:.95}
.hero-badges{display:flex;flex-wrap:wrap;gap:8px}
.hero-badges span{background:rgba(255,255,255,.16);border-radius:999px;padding:6px 12px;font-size:13.5px;font-weight:600}
.learn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}
.learn{background:var(--surface);border-radius:18px;padding:18px 18px 16px}
.learn .li{font-size:30px;line-height:1}
.learn b{display:block;font-size:17px;margin:10px 0 4px}
.learn span{font-size:13.5px;color:var(--muted);line-height:1.45}
.learn.unlock{background:linear-gradient(160deg,var(--accent-soft),#fff);border:1px solid #CFEAF7}
.bench{margin:0 0 16px}
.bench .bh{display:flex;align-items:baseline;gap:10px;margin:6px 0 10px}
.bench .bh b{font-size:22px;letter-spacing:-.02em}
.bench .bh span{color:var(--muted);font-size:14px}
.bgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.bcard{background:var(--surface);border-radius:16px;padding:14px 16px}
.bcard .n{font-size:28px;font-weight:800;letter-spacing:-.03em;color:var(--accent-dark)}
.bcard .l{font-size:13px;font-weight:600;margin-top:2px}
.bcard .s{font-size:12.5px;color:var(--muted);margin-top:3px}
.bench ul{list-style:none;padding:0;margin:12px 0 0}
.bench li{padding:6px 0;border-bottom:1px solid var(--line);font-size:14.5px}
.bench li:last-child{border-bottom:0}
.teaser{background:linear-gradient(160deg,var(--accent-soft),#fff);border:1px dashed #9ED7F2;border-radius:18px;padding:18px 20px;display:flex;gap:14px;align-items:center}
.teaser .ti{font-size:34px}
.teaser b{display:block;font-size:16px}
.teaser span{font-size:14px;color:var(--muted)}
@media (max-width:720px){.bgrid{grid-template-columns:1fr 1fr}}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.eyebrow.light{color:#fff;opacity:.9}
section{margin:0 0 44px}
h2{font-size:28px;letter-spacing:-.02em;margin:4px 0 10px;font-weight:800}
.lede,.muted{color:var(--muted)}
code{background:var(--surface);border-radius:6px;padding:1px 6px;font-size:.92em}
.steps{padding-left:22px;margin:0}
.steps li{margin:8px 0}
.drop{border:2px dashed #BFE3F5;background:var(--accent-soft);border-radius:22px;padding:34px 24px;text-align:center;cursor:pointer;transition:background .15s,border-color .15s}
.drop.over{background:#D4EEFA;border-color:var(--accent)}
.drop-icon{font-size:40px}
.drop-title{font-size:20px;font-weight:800;margin-top:8px}
.drop-sub{margin-top:6px;color:var(--muted)}
.drop-note{margin-top:14px;font-size:13px;color:var(--muted);max-width:520px;margin-left:auto;margin-right:auto}
.linkish{background:none;border:0;padding:0;color:var(--accent-dark);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline}
.linkish:disabled{color:var(--muted);text-decoration:none;cursor:default}
.filelist{margin-top:14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.filelist .f{background:var(--surface);border-radius:14px;padding:12px 14px;font-size:14px}
.filelist .f b{display:block;font-size:15px}
.filelist .f.ok b::before{content:"✓ ";color:#1A8F4E}
.filelist .f.missing{opacity:.65}
.filelist .f.missing b::before{content:"– "}
.filelist .f small{color:var(--muted)}
.demo-line{margin:14px 0 0;color:var(--muted)}
.consent{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border-radius:18px;padding:16px 18px;cursor:pointer}
.consent input{margin-top:5px;width:18px;height:18px;flex:none}
.consent-sub{font-size:13.5px;color:var(--muted);margin:10px 4px 0}
.cta{background:var(--accent);color:#fff;border:0;border-radius:999px;padding:16px 28px;font:inherit;font-size:18px;font-weight:800;cursor:pointer;box-shadow:0 10px 30px rgba(0,157,224,.3)}
.cta:hover{background:var(--accent-dark)}
.cta:disabled{background:#B9C2CC;box-shadow:none;cursor:not-allowed}
.cta.small{font-size:15px;padding:11px 18px;box-shadow:none}
.cta.ghost{background:var(--accent-soft);color:var(--accent-dark)}
.cta.ghost:hover{background:#D4EEFA}
.progress{margin-top:18px}
.bar{height:10px;background:var(--surface);border-radius:999px;overflow:hidden}
.bar div{height:100%;width:0;background:var(--accent);transition:width .3s}
.progress-msg{margin-top:8px;font-size:14px;color:var(--muted)}
.error{margin-top:14px;background:#FDECEC;color:var(--danger);border-radius:14px;padding:14px 16px;font-size:14px;white-space:pre-wrap}
.result-actions{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0 14px}
.contrib{background:var(--surface);border-radius:18px;padding:16px 18px;font-size:14.5px;margin-bottom:14px}
.contrib.warn{background:var(--warn)}
.contrib code{background:#fff;user-select:all;word-break:break-all}
#reportFrame{width:100%;height:80vh;border:1px solid var(--line);border-radius:18px;background:#fff}
.modal{position:fixed;inset:0;background:rgba(27,31,36,.5);display:flex;align-items:center;justify-content:center;padding:20px;z-index:10}
.modal-card{background:#fff;border-radius:20px;max-width:820px;width:100%;max-height:90vh;display:flex;flex-direction:column;padding:20px}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.modal pre{flex:1;overflow:auto;background:var(--surface);border-radius:12px;padding:14px;font-size:12px;line-height:1.45;margin:10px 0 0}
footer{border-top:1px solid var(--line);padding-top:20px;color:var(--muted);font-size:13px}
footer a{color:var(--accent-dark)}
.doc h2{font-size:22px;margin-top:32px}
.doc h3{font-size:17px;margin-top:22px}
.doc table{border-collapse:collapse;width:100%;font-size:14.5px}
.doc td,.doc th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
.doc .back{display:inline-block;margin-bottom:18px}
@media (max-width:720px){.learn-grid{grid-template-columns:1fr 1fr}.wrap{padding:12px 14px 40px}.hero{padding:28px 22px 24px;border-radius:22px}.hero h1{font-size:30px}h2{font-size:24px}#reportFrame{height:70vh}}