:root {
  color-scheme: light;
  --page: #f7faf9;
  --surface: #ffffff;
  --surface-subtle: #f1f5f4;
  --surface-selected: #eaf4f1;
  --ink: #17201e;
  --ink-soft: #53615d;
  --ink-faint: #7c8985;
  --line: #dbe5e2;
  --line-strong: #c7d5d1;
  --primary: #0f766e;
  --primary-strong: #0b5f59;
  --primary-content: #ffffff;
  --info-surface: #edf7f5;
  --info-ink: #225e59;
  --error-surface: #fff1f0;
  --error-ink: #9b332c;
  --success-surface: #ecf8f0;
  --success-ink: #17653b;
  --warning-surface: #fff8e8;
  --warning-ink: #815e18;
  --radius-field: 6px;
  --radius-box: 10px;
  --shadow-soft: 0 1px 2px rgba(23, 32, 30, 0.04);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }

html { min-width: 320px; background: var(--page); }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.55;
}

button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }

.shell { width: min(1180px, calc(100% - 40px)); margin-inline: auto; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
}

.header-inner, .footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border: 1px solid var(--primary);
  border-radius: 7px;
  color: var(--primary);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand strong, .brand small { display: block; }
.brand strong { font-size: 14px; letter-spacing: -0.01em; }
.brand small { margin-top: 1px; color: var(--ink-faint); font-size: 10px; letter-spacing: 0.06em; }

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 650;
  white-space: nowrap;
}

.badge-neutral { border-color: var(--line); background: var(--surface-subtle); color: var(--ink-soft); }
.badge-soft { border-color: var(--line); background: var(--surface); color: var(--ink-faint); }
.badge-success { border-color: #bfe2ca; background: var(--success-surface); color: var(--success-ink); }
.badge-error { border-color: #f0c8c4; background: var(--error-surface); color: var(--error-ink); }

.page-content { padding: 54px 0 72px; }

.intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 30px;
}

.eyebrow, .panel-kicker {
  margin: 0 0 7px;
  color: var(--primary);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
}

h1, h2, p { margin-top: 0; }
h1 {
  max-width: 16ch;
  margin-bottom: 12px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.035em;
  text-wrap: balance;
}

.lede { max-width: 59ch; margin-bottom: 0; color: var(--ink-soft); font-size: 15px; }

.privacy-note {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  max-width: 240px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  background: var(--surface);
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.45;
  box-shadow: var(--shadow-soft);
}
.privacy-note strong { color: var(--ink); font-size: 12px; }
.privacy-dot { flex: 0 0 auto; width: 8px; height: 8px; margin-top: 5px; border-radius: 50%; background: #269a64; }

.alert {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 42px;
  margin-bottom: 18px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-box);
  font-size: 12px;
}
.alert-info { border-color: #cce6e1; background: var(--info-surface); color: var(--info-ink); }
.alert-error { border-color: #f0c8c4; background: var(--error-surface); color: var(--error-ink); }
.alert-success { border-color: #bfe2ca; background: var(--success-surface); color: var(--success-ink); }
.alert-warning { border-color: #eed9a8; background: var(--warning-surface); color: var(--warning-ink); }
.alert-icon {
  display: grid;
  place-items: center;
  width: 19px;
  height: 19px;
  flex: 0 0 auto;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
}

.workbench { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr); gap: 18px; align-items: start; }
.workbench-main, .workbench-side { display: grid; gap: 18px; min-width: 0; }

.card { background: var(--surface); border-radius: var(--radius-box); }
.card-border { border: 1px solid var(--line); box-shadow: var(--shadow-soft); }
.panel { padding: 19px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 15px; margin-bottom: 16px; }
.panel-heading h2 { margin: 0; font-size: 15px; line-height: 1.2; letter-spacing: -0.01em; }
.panel-kicker { margin-bottom: 5px; font-size: 9px; letter-spacing: 0.14em; }

.dropzone {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 82px;
  padding: 14px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-box);
  background: var(--surface-subtle);
  color: var(--ink-soft);
  transition: border-color 160ms ease, background-color 160ms ease;
}
.dropzone:hover, .dropzone:focus-within, .dropzone.is-dragging { border-color: var(--primary); background: var(--surface-selected); }
.dropzone.compact { min-height: 72px; }
.dropzone-icon {
  display: grid;
  place-items: center;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background: var(--surface);
  color: var(--primary);
  font-size: 20px;
  font-weight: 300;
  line-height: 1;
}
.dropzone-copy { display: block; min-width: 0; }
.dropzone-copy strong, .dropzone-copy small { display: block; }
.dropzone-copy strong { color: var(--ink); font-size: 13px; }
.dropzone-copy small { margin-top: 2px; color: var(--ink-faint); font-size: 11px; }
.dropzone input { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; clip-path: inset(50%); }

.file-summary {
  overflow: hidden;
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 5px;
  background: var(--surface-subtle);
  color: var(--ink-soft);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-summary.empty { color: var(--ink-faint); }

.input-list-wrap { margin: 10px 0; }
.input-list { max-height: 164px; min-height: 50px; margin: 0; padding: 3px; overflow: auto; border: 1px solid var(--line); border-radius: 6px; list-style: none; }
.input-list li { display: flex; align-items: center; gap: 8px; min-height: 31px; padding: 5px 7px; border-bottom: 1px solid var(--line); color: var(--ink-soft); font-size: 11px; }
.input-list li:last-child { border-bottom: 0; }
.input-list li span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.input-list .file-index { width: 19px; flex: 0 0 auto; color: var(--ink-faint); font-variant-numeric: tabular-nums; text-align: right; }
.empty-list { display: block !important; padding: 15px 10px !important; border: 0 !important; color: var(--ink-faint) !important; text-align: center; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius-field);
  background: var(--surface-subtle);
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}
.btn:hover:not(:disabled) { border-color: var(--line-strong); background: #e9efed; }
.btn:focus-visible, .dropzone:focus-within { outline: 3px solid rgba(15, 118, 110, 0.22); outline-offset: 2px; }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: 0.48; }
.btn-sm { min-height: 29px; padding: 5px 9px; font-size: 11px; }
.btn-lg { min-height: 45px; padding: 9px 15px; font-size: 13px; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-soft); }
.btn-ghost:hover:not(:disabled) { border-color: var(--line); background: var(--surface-subtle); color: var(--ink); }
.btn-outline { border-color: var(--line-strong); background: var(--surface); color: var(--ink-soft); }
.btn-outline:hover:not(:disabled) { border-color: var(--primary); background: var(--surface-selected); color: var(--primary-strong); }
.btn-primary { border-color: var(--primary); background: var(--primary); color: var(--primary-content); }
.btn-primary:hover:not(:disabled) { border-color: var(--primary-strong); background: var(--primary-strong); }
.run-button { width: 100%; margin-top: 20px; }

.setting-label { display: block; margin-bottom: 11px; }
.setting-label strong, .setting-label small { display: block; }
.setting-label strong { font-size: 12px; }
.setting-label small { margin-top: 3px; color: var(--ink-faint); font-size: 11px; }
.setting-value { color: var(--primary); font-size: 13px; font-weight: 800; font-variant-numeric: tabular-nums; }
.range { display: block; width: 100%; height: 20px; accent-color: var(--primary); }
.range-scale { display: flex; justify-content: space-between; margin-top: -1px; color: var(--ink-faint); font-size: 10px; }
.check-group { display: flex; gap: 13px; margin: 18px 0 0; padding: 13px 0 0; border: 0; border-top: 1px solid var(--line); }
.check-group legend { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }
.check-row { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); font-size: 11px; }
.check-row input { width: 15px; height: 15px; margin: 0; accent-color: var(--primary); }

.preview-panel { min-width: 0; }
.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.preview-frame { min-width: 0; margin: 0; }
.preview-frame figcaption { margin-bottom: 6px; color: var(--ink-soft); font-size: 11px; font-weight: 700; }
.preview-image-wrap { display: grid; place-items: center; aspect-ratio: 1 / 1; overflow: hidden; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-subtle); }
.preview-image-wrap img { display: block; width: 100%; height: 100%; object-fit: contain; }
.preview-placeholder { color: var(--ink-faint); font-size: 11px; }
.preview-caption { min-height: 34px; margin: 11px 0 0; color: var(--ink-faint); font-size: 11px; line-height: 1.45; }

.results-list { min-height: 176px; max-height: 330px; overflow: auto; border-top: 1px solid var(--line); }
.empty-results { display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 176px; padding: 25px 12px; color: var(--ink-faint); text-align: center; }
.empty-results strong { margin-top: 5px; color: var(--ink-soft); font-size: 12px; }
.empty-results span:last-child { max-width: 25ch; margin-top: 3px; font-size: 11px; }
.empty-results-mark { color: var(--line-strong); font-size: 23px; line-height: 1; }
.result-row { display: flex; align-items: center; gap: 9px; min-height: 53px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.result-row:last-child { border-bottom: 0; }
.result-info { min-width: 0; flex: 1 1 auto; }
.result-name { overflow: hidden; color: var(--ink); font-size: 11px; font-weight: 700; text-overflow: ellipsis; white-space: nowrap; }
.result-meta { margin-top: 2px; color: var(--ink-faint); font-size: 10px; }
.result-row .btn { flex: 0 0 auto; }
.result-error { color: var(--error-ink); font-size: 11px; }

.notes { margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--line); }
.notes h2 { margin-bottom: 14px; font-size: 13px; }
.notes-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.notes-grid p { margin-bottom: 0; color: var(--ink-soft); font-size: 11px; }
.notes-grid strong { color: var(--ink); }
code { padding: 1px 4px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface-subtle); color: var(--primary-strong); font-size: 10px; }

.site-footer { border-top: 1px solid var(--line); color: var(--ink-faint); font-size: 10px; }
.footer-inner { min-height: 49px; }

@media (max-width: 850px) {
  .workbench { grid-template-columns: 1fr; }
  .workbench-side { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
  .preview-panel, .results-panel { min-width: 0; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1180px); }
  .page-content { padding: 34px 0 52px; }
  .intro { display: block; margin-bottom: 23px; }
  .privacy-note { max-width: none; margin-top: 18px; }
  h1 { font-size: 29px; }
  .workbench-side { grid-template-columns: 1fr; }
  .notes-grid { grid-template-columns: 1fr; gap: 12px; }
  .header-inner { min-height: 58px; }
  .brand small { display: none; }
  .check-group { flex-wrap: wrap; gap: 8px 13px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}