/* 立马 — 橙色主调，利落商务感（小圆角） */
:root {
  --orange: #f97316;
  --orange-dark: #ea580c;
  --orange-light: #fff7ed;
  --ink: #1c1917;
  --ink-2: #57534e;
  --line: #e7e5e4;
  --bg: #fafaf9;
  --card: #ffffff;
  --ok: #16a34a;
  --radius: 8px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  padding-bottom: env(safe-area-inset-bottom);
}

header.top {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 16px; background: var(--card); border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 10;
}
.logo { display: flex; align-items: center; gap: 8px; font-size: 17px; }
.logo img { border-radius: 6px; }
nav a { color: var(--orange-dark); text-decoration: none; font-weight: 600; font-size: 14px; }

main { max-width: 560px; margin: 0 auto; padding: 20px 16px 40px; }

.hero { padding: 18px 0 22px; }
.hero h1 { font-size: 26px; line-height: 1.3; letter-spacing: -0.02em; }
.hero h1 em { font-style: normal; color: var(--orange); }
.hero .sub { color: var(--ink-2); margin-top: 8px; font-size: 15px; }
.badge {
  display: inline-block; margin-top: 10px; padding: 3px 10px;
  font-size: 12px; color: var(--ok); background: #f0fdf4;
  border: 1px solid #bbf7d0; border-radius: 4px;
}
.badge.busy { color: var(--orange); background: #fff7ed; border-color: #fed7aa; }
.badge.bad { color: #b91c1c; background: #fef2f2; border-color: #fecaca; }

/* 全局错误面板：手机上唯一能看到的排错入口，出错时必须显眼且可复制 */
.err-panel {
  position: fixed; left: 12px; right: 12px; bottom: 12px; z-index: 9999;
  background: #fef2f2; border: 1px solid #fca5a5; border-radius: 6px;
  padding: 12px; box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}
.err-panel > b { display: block; color: #b91c1c; font-size: 14px; margin-bottom: 6px; }
.err-panel pre {
  margin: 0; max-height: 180px; overflow: auto; font-size: 12px;
  line-height: 1.45; color: #7f1d1d; white-space: pre-wrap; word-break: break-all;
}
.err-panel .err-actions { display: flex; gap: 8px; margin-top: 10px; }
.err-panel button {
  flex: 1; padding: 7px 10px; font-size: 13px; cursor: pointer;
  border: 1px solid #fca5a5; background: #fff; color: #b91c1c; border-radius: 4px;
}

.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px; margin-bottom: 16px;
}
.card h2 { font-size: 17px; margin-bottom: 12px; }

.drop {
  border: 2px dashed var(--orange); border-radius: var(--radius);
  padding: 34px 16px; text-align: center; cursor: pointer;
  background: var(--orange-light); transition: background 0.15s;
}
.drop.drag, .drop:hover { background: #ffedd5; }
.drop-icon {
  width: 44px; height: 44px; margin: 0 auto 8px;
  background: var(--orange); color: #fff; border-radius: 50%;
  font-size: 26px; line-height: 44px; font-weight: 700;
}
.drop p { font-size: 15px; }
.drop .hint { font-size: 12.5px; color: var(--ink-2); margin-top: 4px; }

.progress-row .bar { height: 8px; }
.bar { background: #f0f0ef; border-radius: 4px; overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; background: var(--orange); border-radius: 4px; transition: width 0.2s; }
.hint { font-size: 12.5px; color: var(--ink-2); margin-top: 8px; }
.meta { font-size: 14px; color: var(--ink-2); margin-bottom: 14px; }

.field { margin: 16px 0; }
.field > label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.count-row { display: flex; align-items: center; gap: 12px; }
.count-row input[type="range"] { flex: 1; accent-color: var(--orange); height: 28px; }
.count-label { font-weight: 700; color: var(--orange-dark); white-space: nowrap; font-size: 14px; }

.seg-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 12px 0 4px; }
.seg-card {
  border: 1px solid var(--line); border-radius: 6px; overflow: hidden; background: #fff;
}
.seg-thumb { position: relative; aspect-ratio: 4/3; background: #f5f5f4; }
.seg-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.seg-idx {
  position: absolute; top: 4px; left: 4px; background: rgba(0,0,0,0.65); color: #fff;
  font-size: 11px; padding: 1px 7px; border-radius: 3px; z-index: 1;
}
.seg-info { padding: 7px 9px; }
.seg-time { font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.seg-score { height: 4px; background: #f0f0ef; border-radius: 2px; margin-top: 5px; }
.seg-score i { display: block; height: 100%; background: var(--orange); border-radius: 2px; }

.audio-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
select {
  flex: 1; min-width: 160px; padding: 10px 12px; font-size: 15px;
  border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink);
}

button { font: inherit; cursor: pointer; border: none; }
button.primary {
  width: 100%; padding: 13px; margin-top: 14px;
  background: var(--orange); color: #fff; font-size: 16px; font-weight: 700;
  border-radius: 6px; transition: background 0.15s;
}
button.primary:hover { background: var(--orange-dark); }
button.primary:disabled { opacity: 0.55; cursor: default; }
button.secondary {
  width: 100%; padding: 12px; margin-top: 8px;
  background: #fff; color: var(--orange-dark); font-size: 15px; font-weight: 600;
  border: 1.5px solid var(--orange); border-radius: 6px;
}
button.secondary:hover { background: var(--orange-light); }
button.ghost {
  padding: 8px 14px; background: var(--orange-light); color: var(--orange-dark);
  border: 1px solid var(--orange); border-radius: 6px; font-size: 13px; font-weight: 600;
}

.export-grid { display: grid; gap: 2px; }
.export-tips { margin-top: 14px; font-size: 13px; color: var(--ink-2); }
.export-tips p { margin-bottom: 8px; }
.export-tips a { color: var(--orange-dark); }

.faq { font-size: 14px; }
.faq h2 { font-size: 17px; margin-bottom: 8px; }
.faq details { background: var(--card); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; margin-bottom: 8px; }
.faq summary { font-weight: 600; cursor: pointer; }
.faq p { color: var(--ink-2); margin-top: 6px; font-size: 13.5px; }

footer { text-align: center; color: var(--ink-2); font-size: 12.5px; padding: 10px 0 30px; }
footer a { color: var(--orange-dark); }

#toasts { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 99; width: max-content; max-width: 90vw; }
.toast {
  background: var(--ink); color: #fff; font-size: 13.5px;
  padding: 10px 16px; border-radius: 6px; margin-top: 8px;
  opacity: 0; transform: translateY(8px); transition: all 0.3s;
}
.toast.show { opacity: 1; transform: none; }

.hidden { display: none !important; }
@media (min-width: 480px) {
  .seg-grid { grid-template-columns: repeat(3, 1fr); }
  .hero h1 { font-size: 30px; }
}