/* ---------------- tokens ---------------- */
:root{
  --bg:#f7f8fb;
  --card:#ffffff;
  --ink:#101828;
  --ink-2:#475467;
  --ink-3:#98a2b3;
  --line:#e4e7ec;
  --brand:#2563eb;
  --brand-dark:#1d4ed8;
  --brand-soft:#eff4ff;
  --ok:#067647;
  --ok-soft:#ecfdf3;
  --warn:#b54708;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,24,40,.06),0 8px 24px -12px rgba(16,24,40,.14);
  --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
}
.wrap{width:min(1080px,calc(100% - 32px));margin-inline:auto}
.hidden{display:none !important}
h1,h2,h3{margin:0;line-height:1.3;letter-spacing:-.01em}
a{color:var(--brand);text-decoration:none}
b{font-weight:600}

/* ---------------- header ---------------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;color:var(--brand);font-weight:800;font-size:17px;letter-spacing:.02em}
.logo svg{display:block}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:var(--ink-2);font-size:14.5px}
.nav a:hover{color:var(--brand)}
@media(max-width:720px){ .nav a{display:none} }

/* ---------------- buttons ---------------- */
.btn-primary,.btn-ghost{
  font-family:inherit;font-size:14.5px;font-weight:600;border-radius:10px;
  padding:9px 18px;cursor:pointer;transition:.15s;border:1px solid transparent;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 1px 2px rgba(37,99,235,.3)}
.btn-primary:hover{background:var(--brand-dark)}
.btn-primary:disabled{background:#c3cddf;cursor:not-allowed;box-shadow:none}
.btn-primary.full{display:block;width:100%;padding:12px;font-size:15px;margin-top:10px;text-align:center}
.btn-ghost{background:#fff;color:var(--ink-2);border-color:var(--line)}
.btn-ghost:hover{border-color:#c8d2e4;color:var(--ink)}

/* ---------------- hero ---------------- */
.hero{padding:56px 0 30px;text-align:center}
.hero h1{font-size:clamp(26px,4vw,40px);font-weight:800;letter-spacing:-.02em}
.lead{max-width:660px;margin:18px auto 0;color:var(--ink-2);font-size:16.5px}
.lead strong{color:var(--ink)}
.badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:24px}
.badges span{
  background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 14px;font-size:13.5px;color:var(--ink-2);box-shadow:0 1px 1px rgba(16,24,40,.03)
}
.br-mobile{display:none}
@media(max-width:640px){ .hero{padding:34px 0 20px} .br-mobile{display:inline} }

/* ---------------- app ---------------- */
.app{padding-bottom:24px}
.dropzone{
  background:var(--card);border:2px dashed #cbd5e1;border-radius:18px;
  padding:52px 20px;text-align:center;cursor:pointer;transition:.18s;
  box-shadow:var(--shadow);
}
.dropzone:hover,.dropzone:focus-visible{border-color:var(--brand);background:var(--brand-soft);outline:none}
.dropzone.drag{border-color:var(--brand);background:var(--brand-soft);transform:scale(1.005)}
.dz-icon{font-size:38px;line-height:1}
.dz-title{font-size:17.5px;font-weight:650;margin-top:14px}
.dz-sub{font-size:13.5px;color:var(--ink-3);margin-top:6px}

.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-top:18px;box-shadow:var(--shadow)}
.modes{display:flex;gap:6px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:14px;margin-bottom:18px}
.mode{
  font-family:inherit;font-size:14px;font-weight:600;color:var(--ink-2);
  background:transparent;border:1px solid transparent;border-radius:9px;
  padding:8px 14px;cursor:pointer;transition:.15s;
}
.mode:hover{background:#f2f4f7}
.mode.active{background:var(--brand-soft);color:var(--brand-dark);border-color:#c9daff}

.settings{display:grid;gap:14px}
.field{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--ink-2)}
.field > span{font-weight:600}
.field input[type=text],.field input[type=number],.field select{
  font-family:inherit;font-size:15px;color:var(--ink);background:#fff;
  border:1px solid var(--line);border-radius:9px;padding:10px 12px;width:100%;
  transition:.15s;
}
.field input:focus,.field select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
.field.checkbox{flex-direction:row;align-items:center;gap:9px;font-size:14px}
.field.checkbox input{width:16px;height:16px;accent-color:var(--brand)}
.field input[type=range]{accent-color:var(--brand);width:100%}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:560px){ .row2{grid-template-columns:1fr} }
.hint{font-size:13px;color:var(--ink-3);line-height:1.6;margin:0;background:#f9fafb;border-left:3px solid #e0e7f3;padding:10px 13px;border-radius:0 8px 8px 0}

.actions{display:flex;align-items:center;gap:14px;margin-top:20px;flex-wrap:wrap}
#runBtn{padding:12px 30px;font-size:15px}
.progress{flex:1;min-width:140px;height:6px;background:#e9edf5;border-radius:99px;overflow:hidden}
.progress .bar{height:100%;width:0;background:var(--brand);transition:width .25s}
.status{font-size:13.5px;color:var(--ink-2)}

/* ---------------- results ---------------- */
.results{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-top:18px;box-shadow:var(--shadow)}
.results-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.results-head h2{font-size:19px}
.results-sum{font-size:13.5px;color:var(--ink-2);margin:6px 0 0}
.results-actions{display:flex;gap:10px}
.grid-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:14px}
.item{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:#fafbfc}
.item img{display:block;width:100%;height:132px;object-fit:cover;background:#eef1f6}
.item-body{padding:9px 11px 11px}
.item-name{font-size:12.5px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item-meta{font-size:11.5px;color:var(--ink-3);margin-top:3px;display:flex;justify-content:space-between;gap:6px}
.item-meta .save{color:var(--ok);font-weight:600}
.item a.dl{display:block;text-align:center;margin-top:9px;font-size:12.5px;font-weight:600;background:var(--brand-soft);color:var(--brand-dark);border-radius:7px;padding:6px}

.privacy-note{
  margin-top:18px;font-size:13.5px;color:var(--ink-2);background:var(--ok-soft);
  border:1px solid #abefc6;border-radius:var(--radius);padding:15px 18px;
}
.privacy-note strong{color:var(--ok)}

/* ---------------- content sections ---------------- */
.content{padding:46px 0}
.content h2{font-size:24px;margin-bottom:22px}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:14px;counter-reset:s}
.steps li{
  counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px 18px 62px;position:relative;box-shadow:var(--shadow);
}
.steps li::before{
  content:counter(s);position:absolute;left:20px;top:50%;transform:translateY(-50%);
  width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;
  display:grid;place-items:center;font-size:14px;font-weight:700;
}
.steps b{display:block;font-size:15.5px}
.steps span{font-size:13.5px;color:var(--ink-2)}

.cmp{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14px}
.cmp th,.cmp td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
.cmp thead th{background:#f9fafb;font-size:13px;color:var(--ink-2);font-weight:650}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp td.yes{color:var(--ok);font-weight:600}
.cmp td.no{color:var(--ink-3)}

details{background:var(--card);border:1px solid var(--line);border-radius:11px;padding:14px 18px;margin-bottom:10px}
details summary{cursor:pointer;font-weight:600;font-size:15px;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary::before{content:"＋";color:var(--brand);margin-right:9px;font-weight:700}
details[open] summary::before{content:"－"}
details p{margin:10px 0 2px;color:var(--ink-2);font-size:14px}

/* ---------------- footer ---------------- */
.site-footer{border-top:1px solid var(--line);padding:32px 0 44px;text-align:center;color:var(--ink-3);font-size:13px}
.site-footer p{margin:4px 0}
.tiny{font-size:12px;color:var(--ink-3)}

/* ---------------- modal ---------------- */
.modal{position:fixed;inset:0;background:rgba(16,24,40,.5);display:grid;place-items:center;z-index:100;padding:20px}
.modal-box{background:#fff;border-radius:18px;padding:28px;width:min(420px,100%);position:relative;box-shadow:0 24px 60px -12px rgba(16,24,40,.3);max-height:90vh;overflow:auto}
.modal-close{position:absolute;top:14px;right:14px;background:none;border:none;font-size:16px;color:var(--ink-3);cursor:pointer;padding:6px}
.modal-box h3{font-size:20px}
.muted{color:var(--ink-2);font-size:13.5px;margin:6px 0 16px}
.pro-list{list-style:none;padding:0;margin:0 0 18px;display:grid;gap:8px;font-size:14px;color:var(--ink-2)}
.price{display:flex;align-items:baseline;gap:10px;margin-bottom:18px}
.price b{font-size:34px;color:var(--brand)}
.price span{font-size:13px;color:var(--ink-3)}
.modal-box hr{border:none;border-top:1px solid var(--line);margin:16px 0 12px}
#licenseMsg{margin-top:8px;min-height:16px}
#licenseMsg.ok{color:var(--ok)}
#licenseMsg.err{color:#b42318}
.buy-hint{margin:10px 0 0;line-height:1.7;background:#fff8ed;border:1px solid #ffe0b2;border-radius:9px;padding:9px 11px}
.buy-hint b{color:#b54708}