:root{
  color-scheme: dark;
  --bg:#090908;
  --panel:#151512;
  --panel2:#1d1c18;
  --ink:#f3efe3;
  --muted:#aaa493;
  --line:#343126;
  --accent:#f07c22;
  --accent2:#ffb36f;
  --danger:#ff6b63;
  --ok:#94e2a8;
  --radius:22px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:radial-gradient(circle at 70% 0%,#241b11 0,#090908 42%,#060605 100%);color:var(--ink);font-family:Helvetica,Arial,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif}
button,input,textarea,select{font:inherit}
.app{width:min(980px,100%);margin:0 auto;padding:28px 16px 56px}
.hero{padding:20px 2px 14px}.hero-row{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.lang-switch{display:inline-flex;gap:4px;border:1px solid var(--line);background:#0d0d0b;border-radius:999px;padding:4px;flex:0 0 auto;margin-top:4px}.lang{border:0;border-radius:999px;background:transparent;color:var(--muted);padding:8px 11px;font-size:12px;font-weight:800;cursor:pointer}.lang.active{background:var(--accent);color:#120904}
.eyebrow,.kicker{letter-spacing:.16em;text-transform:uppercase;font-size:12px;color:var(--accent2);font-weight:700}
h1{font-size:clamp(36px,7vw,68px);line-height:.92;margin:10px 0 14px;letter-spacing:-.065em}
h1 span{color:var(--accent)}
.hero p{margin:0;max-width:680px;color:var(--muted);font-size:16px;line-height:1.65}
.panel,.rules{background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.018));border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin:14px 0;box-shadow:0 18px 60px rgba(0,0,0,.24);backdrop-filter:blur(12px)}
.section-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;margin-bottom:18px}
h2{margin:4px 0 0;font-size:22px;letter-spacing:-.025em}.badge{border:1px solid var(--line);border-radius:999px;padding:8px 12px;color:var(--muted);font-size:12px;white-space:nowrap;background:rgba(0,0,0,.18)}
.field-label{display:block;margin:14px 0 7px;color:var(--muted);font-size:13px;font-weight:700}
textarea,input,select{width:100%;border:1px solid var(--line);background:#0e0e0c;color:var(--ink);border-radius:16px;padding:13px 14px;outline:none;transition:border-color .15s,box-shadow .15s}
textarea:focus,input:focus,select:focus{border-color:rgba(240,124,34,.8);box-shadow:0 0 0 4px rgba(240,124,34,.14)}
textarea{resize:vertical;min-height:122px}.grid.two{display:grid;grid-template-columns:1fr 220px;gap:12px}.segmented{display:grid;grid-template-columns:1fr 1fr 1.35fr;background:#0d0d0b;border:1px solid var(--line);border-radius:18px;padding:5px;gap:5px}.seg{border:0;border-radius:13px;padding:11px 10px;background:transparent;color:var(--muted);cursor:pointer}.seg.active{background:var(--accent);color:#100a04;font-weight:800}.hidden{display:none!important}.note{color:var(--muted);font-size:13px;line-height:1.55;margin:9px 0 0}.primary,.secondary,.ghost{border:0;border-radius:16px;padding:13px 16px;margin-top:16px;cursor:pointer;font-weight:800}.primary{width:100%;background:var(--accent);color:#120904}.secondary{background:#f0e6d2;color:#15100a}.ghost{background:transparent;color:var(--muted);border:1px solid var(--line)}.actions{display:flex;gap:10px;flex-wrap:wrap}.status{min-height:24px;margin-top:12px;color:var(--muted);font-size:14px;line-height:1.55}.status.ok{color:var(--ok)}.status.err{color:var(--danger)}.preview-wrap{display:grid;place-items:center;background:#0d0d0b;border:1px solid var(--line);border-radius:18px;min-height:260px;overflow:hidden}.preview-wrap canvas{width:min(100%,460px);height:auto;display:block}.page-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:10px;margin-top:14px}.page-card{border:1px solid var(--line);border-radius:16px;padding:12px;background:rgba(0,0,0,.16)}.page-card strong{display:block;font-size:14px;margin-bottom:4px}.page-card span{display:block;color:var(--muted);font-size:12px;line-height:1.5}.page-card button{width:100%;margin-top:10px;border:1px solid var(--line);background:#0f0f0c;color:var(--ink);border-radius:12px;padding:10px;cursor:pointer}.result{border:1px solid var(--line);border-radius:16px;padding:14px;margin-top:14px;background:#0e0e0c}.result h3{margin:0 0 10px;font-size:18px}.result textarea{min-height:160px}.result a.download{display:inline-flex;margin-top:12px;background:var(--accent);color:#120904;text-decoration:none;border-radius:14px;padding:11px 14px;font-weight:800}.recovered-preview{margin-top:12px;border:1px solid var(--line);border-radius:16px;background:#070706;overflow:hidden;display:grid;place-items:center}.recovered-preview img{display:block;max-width:100%;height:auto;max-height:72vh}.rules p{color:var(--muted);line-height:1.7;margin:8px 0 0}@media(max-width:720px){.grid.two,.segmented{grid-template-columns:1fr}.section-head{display:block}.badge{display:inline-flex;margin-top:10px}.app{padding-left:12px;padding-right:12px}.hero-row{align-items:flex-start}.lang-switch{margin-top:0}.lang{padding:8px 9px}}
.recovered-label{margin-top:12px}.decoded-text-box{margin:8px 0 0;white-space:pre-wrap;word-break:break-word;border:1px solid var(--line);background:#070706;color:var(--ink);border-radius:16px;padding:14px;min-height:96px;max-height:46vh;overflow:auto;line-height:1.6;font-family:Helvetica,Arial,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;font-size:15px}.copy-text-btn{display:inline-flex;margin-top:10px;border:1px solid var(--line);background:#0f0f0c;color:var(--ink);border-radius:14px;padding:10px 13px;font-weight:800;cursor:pointer}