:root {
  --bg: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --accent: #f97316;
  --accent-dark: #c2410c;
  --soft: #fff7ed;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }

.site-header {
  border-bottom: 1px solid var(--line);
  background: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }

.nav { display: flex; gap: 18px; }
.nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.nav a:hover { color: var(--ink); }

.hero { background: var(--soft); padding: 64px 0 56px; border-bottom: 1px solid var(--line); }
.hero h1 { font-size: 2.4rem; line-height: 1.15; margin: 0 0 12px; }
.lede { font-size: 1.1rem; color: #334155; max-width: 640px; }
.hero-cta { display: flex; gap: 12px; margin: 20px 0 12px; flex-wrap: wrap; }
.engine-note { font-size: 0.85rem; color: var(--muted); }

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
}

.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.converter-section { padding: 48px 0; }
.converter-section h2 { margin-top: 0; }

.status { color: var(--muted); font-size: 0.95rem; }
.status.ready { color: #15803d; }
.status.error { color: #b91c1c; }

.dropzone {
  border: 2px dashed #cbd5e1;
  border-radius: var(--radius);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  background: #f8fafc;
  transition: border-color 0.15s, background 0.15s;
}

.dropzone:hover, .dropzone.dragover { border-color: var(--accent); background: #fff7ed; }
.dropzone:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.linklike { color: var(--accent-dark); text-decoration: underline; }
.hint { color: var(--muted); font-size: 0.85rem; margin-bottom: 0; }

.samples { margin: 14px 0 0; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; color: var(--muted); font-size: 0.9rem; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 0.85rem;
}
.chip:hover { border-color: var(--accent); }

.result { margin-top: 24px; border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; background: #fff; }
.result-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.file-name { font-weight: 600; }
.badge {
  background: #f1f5f9;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 12px;
  font-size: 0.8rem;
  color: #334155;
}
.timing { color: var(--muted); font-size: 0.85rem; }
.output-label { font-weight: 600; font-size: 0.9rem; }
.output {
  width: 100%;
  margin-top: 8px;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #0f172a;
  color: #e2e8f0;
  resize: vertical;
}
.result-actions { display: flex; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

.formats { padding: 48px 0; background: #f8fafc; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 20px 0; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.card h3 { margin: 0 0 4px; font-size: 1rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.85rem; }
.feature-list { padding-left: 20px; color: #334155; }

.privacy { padding: 48px 0; }
.faq { padding: 0 0 48px; }
.faq details { border: 1px solid var(--line); border-radius: 8px; padding: 12px 16px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq code { background: #f1f5f9; padding: 1px 6px; border-radius: 4px; font-size: 0.85em; }

.site-footer { border-top: 1px solid var(--line); padding: 24px 0; color: var(--muted); font-size: 0.85rem; }
.site-footer a { color: var(--accent-dark); }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.8rem; }
  .nav { display: none; }
}