:root {
  --bg:#f4f7fb;--surface:#fff;--surface2:#edf3fb;--text:#152033;--muted:#5d6b82;
  --line:#d9e2ef;--brand:#274c77;--brand2:#1d3557;--ok:#1f7a4d;--warn:#9a6700;
  --danger:#a82b2b;--shadow:0 14px 36px rgba(29,53,87,.10);--radius:20px
}
@media (prefers-color-scheme:dark) {
  :root {
    --bg:#0d1420;--surface:#131d2c;--surface2:#18263a;--text:#eef4ff;--muted:#a9b6c9;
    --line:#273850;--brand:#91b7e1;--brand2:#c4dcf5;--ok:#66c996;--warn:#e5bb61;
    --danger:#f18a8a;--shadow:0 14px 36px rgba(0,0,0,.24)
  }
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.55}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(1080px,calc(100% - 32px));margin:auto}
.topbar{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.nav{height:66px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:850;letter-spacing:-.03em;color:var(--text);font-size:1.05rem}
.brand b{color:var(--brand)}
.navlinks{display:flex;gap:18px;font-size:.94rem}
.hero{padding:64px 0 34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:7px 11px;border:1px solid var(--line);background:var(--surface);border-radius:999px;color:var(--muted);font-size:.84rem;font-weight:700}
.hero h1{font-size:clamp(2.15rem,7vw,4.3rem);line-height:1.02;letter-spacing:-.055em;margin:20px 0 18px;max-width:980px}
.hero p{font-size:clamp(1.02rem,2.4vw,1.22rem);color:var(--muted);max-width:820px;margin:0}
.grid{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.upload{padding:22px}
.drop{border:2px dashed var(--line);border-radius:16px;padding:30px 18px;text-align:center;background:var(--surface2);transition:.2s}
.drop.drag{border-color:var(--brand);transform:translateY(-1px)}
.drop strong{display:block;font-size:1.1rem;margin-bottom:5px}
.small{font-size:.88rem;color:var(--muted)}
.file-name{margin-top:8px}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.btn{appearance:none;border:0;border-radius:12px;padding:12px 16px;font:inherit;font-weight:800;cursor:pointer}
.btn.primary{background:var(--brand2);color:#fff}
.btn.secondary{background:var(--surface2);color:var(--text);border:1px solid var(--line)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.textinput{width:100%;min-height:170px;margin-top:16px;border:1px solid var(--line);border-radius:14px;background:var(--surface);color:var(--text);padding:14px;font:inherit;resize:vertical}
.privacy{display:flex;gap:10px;align-items:flex-start;margin-top:16px;padding:12px 13px;border-radius:12px;background:var(--surface2);color:var(--muted);font-size:.88rem}
.panel{padding:22px;min-height:390px}
.panel h2{margin:0 0 14px;font-size:1.15rem}
.placeholder{color:var(--muted);padding:28px 0}
.result{display:none}
.result.show{display:block}
.result-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start;padding-bottom:14px;border-bottom:1px solid var(--line)}
.badge{font-size:.78rem;font-weight:800;padding:6px 9px;border-radius:999px;background:var(--surface2);color:var(--brand)}
.kv{display:grid;grid-template-columns:130px 1fr;gap:9px 14px;padding:15px 0;border-bottom:1px solid var(--line)}
.kv:last-child{border-bottom:0}
.k{color:var(--muted);font-size:.88rem}
.v{font-weight:650}
.list{margin:8px 0 0;padding-left:20px}
.notice{margin-top:15px;border-left:4px solid var(--warn);background:var(--surface2);padding:12px 14px;border-radius:8px;font-size:.9rem}
.error{color:var(--danger);font-weight:700;margin-top:12px}
.loading{display:none;margin-top:13px;color:var(--muted);font-weight:700}
.loading.show{display:block}
.section{padding:38px 0}
.section h2{font-size:clamp(1.55rem,4vw,2.2rem);letter-spacing:-.035em;margin:0 0 14px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.step{padding:18px}
.num{font:800 .82rem ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--brand)}
.step h3{margin:8px 0 5px}
.step p{margin:0;color:var(--muted);font-size:.94rem}
.links{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.linkcard{padding:16px;box-shadow:none}
.linkcard strong{display:block;color:var(--text)}
.linkcard span{font-size:.86rem;color:var(--muted)}
.sourcebox{padding:17px;background:var(--surface);border:1px solid var(--line);border-radius:14px;color:var(--muted);font-size:.9rem}
.footer{padding:32px 0 46px;color:var(--muted);font-size:.86rem}
.footer .wrap{border-top:1px solid var(--line);padding-top:20px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}

.seo-content{margin-top:28px}
.section-alt{background:var(--surface2);border-block:1px solid var(--line)}
.prose{max-width:840px}
.prose h2{font-size:clamp(1.5rem,4vw,2.1rem);letter-spacing:-.035em;margin:0 0 14px}
.prose h3{font-size:1.08rem;margin:0 0 6px}
.prose p{margin:0 0 14px;color:var(--muted)}
.prose p:last-child{margin-bottom:0}
.prose a{text-decoration:underline;text-underline-offset:3px}
.document-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 26px;margin:20px 0 0;padding-left:21px}
.content-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.content-grid.two-columns{grid-template-columns:repeat(2,minmax(0,1fr))}
.content-grid .prose{padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.warning-block{border-left:4px solid var(--warn)!important}
.faq article{padding:18px 0;border-bottom:1px solid var(--line)}
.faq article:last-child{border-bottom:0}
.faq article p{margin:0}

.guide-hero{padding-bottom:24px}
.guide-hero h1{font-size:clamp(2rem,6vw,3.7rem)}
.guide-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.guide-body{padding:24px}
.guide-body h2{margin-top:30px}
.guide-body h2:first-child{margin-top:0}
.guide-body ul{padding-left:22px}
.guide-body li{margin:8px 0}
.guide-aside{padding:22px;position:sticky;top:88px}
.guide-aside .btn{display:inline-block}
.guide-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.guide-links a{padding:8px 11px;background:var(--surface2);border:1px solid var(--line);border-radius:999px;font-size:.86rem}
.cta-copy{color:var(--muted);font-size:.94rem}

@media (max-width:780px) {
  .navlinks{display:none}
  .hero{padding-top:40px}
  .hero h1{font-size:clamp(2rem,10vw,3rem)}
  .grid,.steps,.links,.document-list,.content-grid,.content-grid.two-columns,.guide-layout{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr;gap:2px}
  .panel{min-height:260px}
  .seo-content{margin-top:16px}
  .section{padding:30px 0}
  .content-grid{gap:12px}
  .guide-body,.guide-aside{padding:18px}
  .guide-aside{position:static}
  .document-list{gap:6px}
  .faq article{padding:15px 0}
}