[hidden] { display: none !important; }
:root {
  --bg: #0d1117;
  --bg-2: #11161f;
  --card: #151b26;
  --card-2: #1b2331;
  --line: #263041;
  --line-2: #33405a;
  --text: #e7ecf3;
  --text-2: #a9b4c4;
  --text-3: #6f7c90;
  --accent: #3ddc97;
  --accent-ink: #062016;
  --accent-soft: rgba(61, 220, 151, .12);
  --warn: #f3b44a;
  --warn-soft: rgba(243, 180, 74, .12);
  --err: #ff6b6b;
  --err-soft: rgba(255, 107, 107, .12);
  --info: #7aa7ff;
  --info-soft: rgba(122, 167, 255, .12);
  --radius: 12px;
  --shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 8px 24px rgba(0,0,0,.25);
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f7fa;
    --bg-2: #eef1f5;
    --card: #ffffff;
    --card-2: #f6f8fb;
    --line: #e2e7ee;
    --line-2: #cfd7e3;
    --text: #141a24;
    --text-2: #4a5566;
    --text-3: #8591a3;
    --accent: #0f9d63;
    --accent-ink: #ffffff;
    --accent-soft: rgba(15, 157, 99, .10);
    --warn: #b7791f;
    --warn-soft: rgba(183, 121, 31, .10);
    --err: #d64545;
    --err-soft: rgba(214, 69, 69, .08);
    --info: #3563d6;
    --info-soft: rgba(53, 99, 214, .08);
    --shadow: 0 1px 2px rgba(20,26,36,.05), 0 6px 18px rgba(20,26,36,.05);
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font: 12px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--card-2); border: 1px solid var(--line); padding: 1px 5px; border-radius: 5px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }

/* top bar */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.brand-mark { width: 28px; height: 28px; color: var(--accent); }
.topnav { display: flex; align-items: center; gap: 18px; }
.topnav a { color: var(--text-2); }
.chip { font: 12px/1 ui-monospace, Menlo, Consolas, monospace; padding: 7px 10px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); cursor: pointer; white-space: nowrap; }
.chip.low { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 35%, transparent); }

/* hero */
.hero { padding: 36px 0 24px; }
.hero h1 { font-size: clamp(22px, 3.4vw, 32px); line-height: 1.3; margin: 0 0 10px; letter-spacing: -.01em; }
.accent { color: var(--accent); }
.lede { color: var(--text-2); margin: 0 0 18px; max-width: 720px; font-size: 15px; }
.steps { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.steps li { display: flex; align-items: center; gap: 10px; background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 6px 14px 6px 6px; color: var(--text-2); }
.steps b { width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: var(--accent-ink); font-size: 12px; }

/* layout */
.grid { display: grid; grid-template-columns: 340px 1fr; gap: 16px; align-items: start; }
@media (max-width: 860px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); min-width: 0; }
.card-title { font-size: 13px; font-weight: 600; color: var(--text-2); margin: 0 0 14px; letter-spacing: .04em; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; margin-bottom: 12px; }
.card-head .card-title { margin: 0; }
.head-actions { display: flex; gap: 6px; }

/* form */
.field { margin-bottom: 14px; min-width: 0; }
.field > label, .label { display: block; font-size: 12px; font-weight: 600; color: var(--text-2); margin-bottom: 6px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
input[type=text], input[type=password], select, textarea {
  width: 100%; background: var(--bg-2); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
#apiKey { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.input-row { display: flex; gap: 6px; }
.field-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; }
.hint { color: var(--text-3); font-size: 12px; margin: 6px 0 0; line-height: 1.5; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-2); cursor: pointer; user-select: none; }
.check.strong { font-size: 13px; font-weight: 600; color: var(--text); }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; margin: 0; }
.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; font-size: 12px; cursor: pointer; }
.link:hover { text-decoration: underline; }

.seg { display: grid; grid-template-columns: repeat(3, 1fr); background: var(--bg-2); border: 1px solid var(--line); border-radius: 9px; padding: 3px; gap: 3px; }
.seg button { background: none; border: 0; color: var(--text-2); font: inherit; font-size: 12.5px; padding: 7px 4px; border-radius: 6px; cursor: pointer; }
.seg button[aria-checked=true] { background: var(--card-2); color: var(--text); box-shadow: 0 0 0 1px var(--line-2); font-weight: 600; }

.editor { display: flex; flex-direction: column; }
#rawInput { min-height: 330px; resize: vertical; font: 13px/1.65 ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", "Microsoft YaHei", monospace; }
.format-help { margin-top: 10px; color: var(--text-2); font-size: 12.5px; }
.format-help summary { cursor: pointer; color: var(--text-3); }
.format-body p { margin: 8px 0; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; border-radius: 8px; border: 1px solid transparent; font: inherit; font-weight: 600; padding: 9px 16px; cursor: pointer; white-space: nowrap; transition: filter .15s, background .15s; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.primary:not(:disabled):hover { filter: brightness(1.08); }
.btn.primary.paused { background: var(--warn); color: #1d1300; }
.btn.secondary { background: var(--card-2); color: var(--text); border-color: var(--line-2); }
.btn.secondary:not(:disabled):hover { border-color: var(--accent); }
.btn.ghost { background: transparent; color: var(--text-2); border-color: var(--line); }
.btn.ghost:not(:disabled):hover { color: var(--text); border-color: var(--line-2); }
.btn.sm { padding: 5px 10px; font-size: 12px; font-weight: 500; }
.btn.xs { padding: 3px 8px; font-size: 12px; font-weight: 500; border-radius: 6px; }
.btn.danger { color: var(--err); }

/* tracks */
.tracks { margin-top: 16px; }
.tracks-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.tracks-left { display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.tracks-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.stat { font-size: 12.5px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.stat.muted { color: var(--text-3); }
.progress { height: 3px; background: var(--line); border-radius: 3px; margin: 14px 0 0; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width .4s; }
.queue-note { margin: 10px 0 0; font-size: 12.5px; color: var(--text-2); background: var(--info-soft); border-radius: 8px; padding: 8px 12px; }
.queue-note.warn { background: var(--warn-soft); color: var(--warn); }

.track-list { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.track { border: 1px solid var(--line); background: var(--bg-2); border-radius: 10px; padding: 12px 14px; transition: opacity .2s, border-color .2s; }
.track.off { opacity: .55; }
.track.is-active { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.track-main { display: flex; gap: 12px; align-items: flex-start; }
.track-main > input { margin-top: 3px; }
.track-no { font: 600 13px/1.5 ui-monospace, Menlo, Consolas, monospace; color: var(--text-3); min-width: 22px; }
.track-body { flex: 1; min-width: 0; }
.track-title { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.track-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 100%; }
.track-sub { color: var(--text-3); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin-top: 2px; }
.track-tools { display: flex; gap: 6px; flex-shrink: 0; }
.badge { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; background: var(--card-2); color: var(--text-3); border: 1px solid var(--line); white-space: nowrap; }
.badge.run { background: var(--info-soft); color: var(--info); border-color: transparent; }
.badge.run::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: currentColor; margin-right: 6px; vertical-align: 1px; animation: pulse 1.2s infinite; }
.badge.ok { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.badge.err { background: var(--err-soft); color: var(--err); border-color: transparent; }
@keyframes pulse { 50% { opacity: .3; } }
.track-err { color: var(--err); font-size: 12px; margin-top: 4px; word-break: break-word; }
.track-warn { color: var(--warn); font-size: 12px; margin-top: 4px; }

.edit-panel { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); display: grid; gap: 10px; }
.edit-panel .row2 { gap: 10px; }
.edit-panel textarea { min-height: 90px; resize: vertical; font-size: 13px; }
.edit-panel .field { margin: 0; }

.clips { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 8px; margin-top: 12px; }
.clip { display: flex; gap: 10px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 9px; padding: 8px; min-width: 0; }
.clip.picked { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.clip-cover { width: 52px; height: 52px; border-radius: 6px; object-fit: cover; background: var(--card-2); flex-shrink: 0; }
.clip-body { flex: 1; min-width: 0; }
.clip-head { display: flex; align-items: center; justify-content: space-between; gap: 6px; font-size: 12px; color: var(--text-2); }
.clip-head b { color: var(--text); }
.clip audio { width: 100%; height: 32px; margin-top: 4px; display: block; }
.clip-actions { display: flex; gap: 6px; margin-top: 4px; flex-wrap: wrap; }
.clip-lyrics { grid-column: 1 / -1; }
.clip-lyrics summary { cursor: pointer; font-size: 12px; color: var(--text-3); }
.clip-lyrics pre { white-space: pre-wrap; font: 12.5px/1.6 inherit; font-family: inherit; color: var(--text-2); background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; max-height: 280px; overflow: auto; }

.empty { text-align: center; padding: 36px 12px 20px; color: var(--text-3); }
.empty p { margin: 0 0 12px; }

/* faq */
.faq { margin: 40px 0 20px; }
.faq h2 { font-size: 18px; margin: 0 0 12px; }
.faq details { border-bottom: 1px solid var(--line); padding: 12px 2px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--text-2); margin: 8px 0 0; }

.footer { border-top: 1px solid var(--line); margin-top: 24px; padding: 20px 0 32px; color: var(--text-3); font-size: 12px; }
.footer p { margin: 0; }

/* toasts */
.toasts { position: fixed; right: 16px; bottom: 16px; display: flex; flex-direction: column; gap: 8px; z-index: 50; max-width: min(380px, calc(100vw - 32px)); }
.toast { background: var(--card-2); color: var(--text); border: 1px solid var(--line-2); border-left: 3px solid var(--info); border-radius: 8px; padding: 10px 14px; box-shadow: var(--shadow); font-size: 13px; animation: slidein .2s ease-out; }
.toast.ok { border-left-color: var(--accent); }
.toast.warn { border-left-color: var(--warn); }
.toast.err { border-left-color: var(--err); }
@keyframes slidein { from { transform: translateY(8px); opacity: 0; } }

@media (max-width: 560px) {
  .topnav a { display: none; }
  .hero { padding-top: 24px; }
  .row2 { grid-template-columns: 1fr; }
  .tracks-actions { width: 100%; }
  .tracks-actions .btn { flex: 1; }
  .track-main { flex-wrap: wrap; }
  .track-tools { width: 100%; justify-content: flex-end; }
}
.track-sub2:empty { display: none; }
.format-eg { font: 12px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, "PingFang SC", monospace; background: var(--bg-2); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 8px 0; white-space: pre-wrap; color: var(--text-2); }
.lbl { display: inline-block; font-size: 11px; line-height: 16px; padding: 0 6px; margin-right: 6px; border-radius: 4px; background: var(--warn-soft); color: var(--warn); font-weight: 600; vertical-align: 1px; }
.lbl.lyr { background: var(--info-soft); color: var(--info); }
#defaultTags { resize: vertical; min-height: 64px; font-size: 13px; }
.hint.ok { color: var(--accent); }
.footer .ver { margin-bottom: 6px; }

/* 我的声音 */
#voiceField .input-row select { flex: 1; min-width: 0; }
.voice-panel { margin-top: 10px; padding: 12px; border: 1px solid var(--line-2); border-radius: 10px; background: var(--bg-2); display: grid; gap: 10px; }
.voice-panel .hint { margin: 0; }
.voice-panel audio { width: 100%; height: 34px; }
.voice-panel input[type=file] { width: 100%; font-size: 12px; color: var(--text-2); }
.rec-row { display: flex; align-items: center; gap: 10px; }
.rec-time { font: 13px/1 ui-monospace, Menlo, Consolas, monospace; color: var(--text-2); }
#recBtn.recording { color: var(--err); border-color: var(--err); animation: pulse 1.2s infinite; }
.consent { align-items: flex-start; line-height: 1.5; }
.consent input { margin-top: 2px; flex-shrink: 0; }
.voice-actions { display: flex; justify-content: flex-end; gap: 8px; }
.voice-status { margin: 0; font-size: 12.5px; color: var(--info); }
.voice-status:empty { display: none; }
.voice-status.err { color: var(--err); }
.voice-tag { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }

/* 模型 API 页面 */
.topnav a[aria-current=page] { color: var(--text); font-weight: 600; }
.pick, .models { margin-top: 8px; }
.pick h2, .models h2 { font-size: 18px; margin: 28px 0 12px; }
.pick-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
.pick-grid > div { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; display: grid; gap: 4px; }
.pick-grid b { font-size: 13px; color: var(--text-2); font-weight: 600; }
.pick-grid span { font-size: 14px; color: var(--text); }
.model { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; margin-bottom: 12px; box-shadow: var(--shadow); }
.model.muted { background: var(--bg-2); box-shadow: none; }
.model-head { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.model-head h3 { margin: 0; font-size: 16px; }
.model-sub { margin: 4px 0 8px; font-size: 12.5px; color: var(--text-3); }
.model ul { margin: 0 0 12px; padding-left: 18px; color: var(--text-2); }
.model li { margin: 3px 0; }
.model-links { display: flex; flex-wrap: wrap; gap: 8px; }
.model-links .btn:hover { text-decoration: none; }
.tag { font-size: 11.5px; padding: 1px 8px; border-radius: 999px; background: var(--card-2); color: var(--text-3); border: 1px solid var(--line); white-space: nowrap; }
.tag.ok { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
.tag.this { background: var(--info-soft); color: var(--info); border-color: transparent; }
.tag.wait { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.tag.stop { background: var(--err-soft); color: var(--err); border-color: transparent; }
@media (max-width: 560px) { .topnav a { display: inline; font-size: 13px; } .topnav { gap: 12px; } .topnav a[href="#how"] { display: none; } }
.lang-switch { background: none; border: 1px solid var(--line); color: var(--text-2); font: inherit; font-size: 12px; padding: 4px 10px; border-radius: 999px; cursor: pointer; }
.lang-switch:hover { color: var(--text); border-color: var(--line-2); }