:root{
    color-scheme:dark;
    --paper:#101216;
    --surface:#181b21;
    --ink:#edf0f5;
    --muted:#9aa3b2;
    --faint:#697180;
    --line:#2a2f39;
    --accent:#8677ff;
    --accent-dark:#9c90ff;
    --accent-tint:#262350;
    --save:#43d17c;
    --save-tint:#18301f;
    --radius:14px;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 30px rgba(0,0,0,.35);
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Inter",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
    line-height:1.55;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,.brand,.eyebrow,.btn,label,th{font-family:"Space Grotesk",system-ui,sans-serif}
  .mono{font-family:"Space Mono",ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums}
  a{color:inherit}
  .wrap{max-width:1080px;margin:0 auto;padding:0 20px}

  /* Header */
  header.site{position:sticky;top:0;z-index:20;background:rgba(16,18,22,.85);backdrop-filter:saturate(140%) blur(10px);border-bottom:1px solid var(--line)}
  .bar{display:flex;align-items:center;justify-content:space-between;height:62px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;letter-spacing:-.02em;text-decoration:none}
  .mark{width:26px;height:26px;border-radius:7px;background:var(--accent);position:relative;flex:none;display:grid;place-items:center}
  .mark::before{content:"";width:10px;height:10px;border:2.5px solid #fff;border-radius:2px;transform:rotate(0deg)}
  .brand small{font-family:"Space Mono",monospace;font-weight:400;font-size:11px;color:var(--muted);letter-spacing:0}
  nav.top{display:flex;gap:22px;align-items:center;font-size:14px;color:var(--muted);font-family:"Space Grotesk",sans-serif}
  nav.top a{text-decoration:none}
  nav.top a:hover{color:var(--ink)}
  @media(max-width:620px){nav.top{display:none}}

  /* Hero */
  .hero{padding:46px 0 8px}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);background:var(--accent-tint);padding:6px 11px;border-radius:100px}
  .hero h1{font-size:clamp(30px,5.4vw,52px);line-height:1.04;letter-spacing:-.03em;margin:18px 0 14px;font-weight:700}
  .hero p.lede{font-size:clamp(16px,2.2vw,19px);color:var(--muted);max-width:36ch;margin:0}
  .hero .privacy{display:inline-flex;align-items:center;gap:8px;margin-top:16px;font-size:13.5px;color:var(--ink);font-weight:500}
  .dot{width:7px;height:7px;border-radius:50%;background:var(--save);box-shadow:0 0 0 4px var(--save-tint)}

  /* Ad slot */
  .adzone{max-width:1080px;margin:22px auto 0;padding:0 20px}
  .adslot{border:1px dashed var(--line);border-radius:10px;min-height:90px;display:grid;place-items:center;background:repeating-linear-gradient(135deg,#14171d,#14171d 10px,#171a21 10px,#171a21 20px);color:var(--faint);font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-family:"Space Mono",monospace}

  /* Dropzone */
  .stage{padding:26px 0 20px}
  .drop{
    background:var(--surface);border:2px dashed #3a4150;border-radius:var(--radius);
    padding:44px 24px;text-align:center;cursor:pointer;transition:border-color .18s,background .18s,transform .06s;
  }
  .drop:hover{border-color:var(--accent);background:#171a24}
  .drop.drag{border-color:var(--accent);background:var(--accent-tint);transform:scale(1.004)}
  .drop .icon{width:52px;height:52px;margin:0 auto 14px;border-radius:13px;background:var(--accent-tint);display:grid;place-items:center}
  .drop .icon svg{stroke:var(--accent)}
  .drop h3{margin:0 0 6px;font-size:20px;letter-spacing:-.01em}
  .drop p{margin:0;color:var(--muted);font-size:14px}
  .drop .browse{color:var(--accent);font-weight:600;text-decoration:underline;text-underline-offset:2px}

  /* Controls */
  .controls{display:flex;flex-wrap:wrap;gap:16px 26px;align-items:center;margin:20px 0 6px;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:12px}
  .ctl{display:flex;flex-direction:column;gap:6px}
  .ctl label{font-size:12px;font-weight:600;letter-spacing:.02em;color:var(--muted);text-transform:uppercase}
  .ctl .row{display:flex;align-items:center;gap:12px}
  input[type=range]{-webkit-appearance:none;appearance:none;width:190px;height:5px;border-radius:5px;background:var(--line);outline:none}
  input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid #101216;box-shadow:0 1px 4px rgba(134,119,255,.5)}
  input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--accent);cursor:pointer;border:3px solid #101216}
  .qval{font-size:15px;min-width:42px}
  select{font-family:"Space Grotesk",sans-serif;font-size:14px;padding:8px 10px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--ink);cursor:pointer}
  .spacer{margin-left:auto}
  .btn{font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:14px;border:none;border-radius:10px;padding:11px 18px;cursor:pointer;transition:background .16s,transform .06s;display:inline-flex;gap:8px;align-items:center}
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--accent);color:#0f1115}
  .btn-primary:hover{background:var(--accent-dark)}
  .btn-primary:disabled{background:#3a4150;cursor:not-allowed}
  .btn-ghost{background:var(--surface);color:var(--ink);border:1px solid var(--line)}
  .btn-ghost:hover{border-color:#4b5364}

  /* Results */
  .results{display:flex;flex-direction:column;gap:12px;margin-top:8px}
  .card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px;display:grid;grid-template-columns:64px 1fr auto;gap:16px;align-items:center}
  .thumb{width:64px;height:64px;border-radius:9px;object-fit:cover;background:#20242d;border:1px solid var(--line)}
  .meta{min-width:0}
  .fname{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:9px}
  .sizes{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-bottom:9px}
  .sizes .to{color:var(--faint)}
  .sizes .new{color:var(--ink);font-weight:700}
  /* signature meter */
  .meter{position:relative;height:10px;border-radius:6px;background:var(--save-tint);overflow:hidden}
  .meter .kept{position:absolute;inset:0 auto 0 0;background:var(--accent);border-radius:6px;transition:width .5s cubic-bezier(.2,.8,.2,1)}
  .save-badge{font-family:"Space Mono",monospace;font-weight:700;font-size:20px;color:var(--save);text-align:right;line-height:1;white-space:nowrap}
  .save-badge span{display:block;font-size:10px;color:var(--faint);font-weight:400;letter-spacing:.1em;text-transform:uppercase;margin-top:4px}
  .card .act{display:flex;flex-direction:column;gap:8px;align-items:flex-end}
  .dl{font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:13px;padding:8px 14px;border-radius:9px;background:var(--ink);color:#12141a;border:none;cursor:pointer;text-decoration:none}
  .dl:hover{background:#ffffff}
  .pending{color:var(--faint);font-size:12px;font-family:"Space Mono",monospace}
  @media(max-width:640px){
    .card{grid-template-columns:52px 1fr;grid-template-areas:"t m" "b b" "a a";row-gap:12px}
    .thumb{grid-area:t;width:52px;height:52px}
    .meta{grid-area:m}
    .savewrap{grid-area:b}
    .card .act{grid-area:a;flex-direction:row;align-items:center;justify-content:space-between;width:100%}
    .save-badge{text-align:left}
  }

  /* Sections */
  main{background:var(--paper)}
  section.block{padding:40px 0;background:var(--paper)}
  .block h2{font-size:clamp(22px,3.4vw,30px);letter-spacing:-.02em;margin:0 0 8px}
  .block .sub{color:var(--muted);margin:0 0 26px;max-width:52ch}
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
  @media(max-width:720px){.steps{grid-template-columns:1fr}}
  .step{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:20px}
  .step .n{font-family:"Space Mono",monospace;font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.1em}
  .step h3{margin:10px 0 6px;font-size:17px;letter-spacing:-.01em}
  .step p{margin:0;color:var(--muted);font-size:14px}
  .faq{border-top:1px solid var(--line);margin-top:8px}
  .faq details{border-bottom:1px solid var(--line);padding:16px 2px}
  .faq summary{cursor:pointer;font-family:"Space Grotesk",sans-serif;font-weight:600;font-size:16px;list-style:none;display:flex;justify-content:space-between;align-items:center}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";color:var(--accent);font-size:22px;font-weight:400}
  .faq details[open] summary::after{content:"−"}
  .faq p{margin:12px 0 2px;color:var(--muted);font-size:14.5px;max-width:64ch}

  footer.site{border-top:1px solid var(--line);background:var(--surface);margin-top:20px}
  .foot{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;padding:30px 0;font-size:13px;color:var(--muted)}
  .foot a{text-decoration:none}
  .foot a:hover{color:var(--ink)}
  .foot .links{display:flex;gap:20px;flex-wrap:wrap}

  .visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  :focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
  @media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

  /* ---- content / legal pages ---- */
  .doc{max-width:760px;padding:48px 0 26px}
  .doc .eyebrow{margin-bottom:14px}
  .doc h1{font-size:clamp(28px,4.6vw,42px);letter-spacing:-.025em;margin:6px 0 6px;font-weight:700}
  .doc .updated{color:var(--faint);font-family:"Space Mono",monospace;font-size:12px;letter-spacing:.02em;margin-bottom:30px}
  .doc h2{font-size:20px;letter-spacing:-.01em;margin:32px 0 10px}
  .doc p,.doc li{color:var(--muted);font-size:15.5px;line-height:1.72}
  .doc a{color:#a99dff;text-decoration:underline;text-underline-offset:2px}
  .doc a:hover{color:#c3baff}
  .doc ul{padding-left:20px;margin:10px 0}
  .doc li{margin:7px 0}
  .doc strong{color:var(--ink);font-weight:600}
  .doc .note{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:20px 0}
  .doc .note p{margin:0}
  .doc .lead{font-size:17px;color:var(--ink);line-height:1.6}