:root {
  --bg: #f4f4f6;
  --card: #ffffff;
  --fg: #17171c;
  --muted: #62626e;
  --line: #dcdce3;
  --accent: #e8394b;
  --accent-fg: #fff;
  --field: #fff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e11;
    --card: #17171c;
    --fg: #ececf1;
    --muted: #9a9aa6;
    --line: #2c2c34;
    --accent: #ff4d5e;
    --field: #101014;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.wrap { max-width: 980px; margin: 0 auto; padding: 24px 16px 48px; }
.head h1 { margin: 0 0 4px; font-size: 26px; letter-spacing: -.01em; }
.sub { margin: 0 0 20px; color: var(--muted); }

.player-area { margin-bottom: 20px; scroll-margin-top: 12px; }
.share { display: flex; gap: 8px; margin-top: 10px; }
.share input { flex: 1; min-width: 0; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; margin-bottom: 16px; }
.field { display: block; margin-bottom: 16px; }
.field > span { display: block; font-weight: 600; margin-bottom: 6px; }
.field em { font-weight: 400; color: var(--muted); font-style: normal; }
input[type="text"], input[type="url"] {
  width: 100%; height: 44px; padding: 0 12px; border-radius: 9px;
  border: 1px solid var(--line); background: var(--field); color: var(--fg); font: inherit;
}
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

.parts { margin: 0 0 10px; padding-left: 0; list-style: none; counter-reset: part; }
.parts li { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; counter-increment: part; }
.parts li::before {
  content: counter(part); flex: none; width: 28px; height: 28px; border-radius: 50%;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
  background: var(--bg); border: 1px solid var(--line); color: var(--muted);
}
.parts input { flex: 1; min-width: 0; }

.btn {
  height: 44px; padding: 0 18px; border-radius: 9px; border: 1px solid var(--line);
  background: var(--card); color: var(--fg); font: 600 15px/1 inherit; font-family: inherit; cursor: pointer;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-fg); }
.btn.primary:disabled { opacity: .6; cursor: progress; }
.btn.ghost { background: transparent; }
.btn.small { height: 36px; padding: 0 12px; font-size: 14px; }
.btn.icon { width: 40px; padding: 0; font-size: 22px; flex: none; color: var(--muted); }
.row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.check { display: inline-flex; align-items: center; gap: 6px; color: var(--muted); cursor: pointer; }
.hint { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.msg { margin: 12px 0 0; padding: 10px 12px; border-radius: 8px; background: rgba(232, 57, 75, .12); color: var(--accent); }

.help summary { cursor: pointer; font-weight: 600; }
.help ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
kbd {
  display: inline-block; min-width: 22px; padding: 1px 6px; border-radius: 5px; text-align: center;
  border: 1px solid var(--line); border-bottom-width: 2px; background: var(--bg); font: 12px/1.5 ui-monospace, Consolas, monospace; color: var(--fg);
}

@media (max-width: 560px) {
  .wrap { padding: 16px 16px 40px; }
  .player-area { margin-left: -16px; margin-right: -16px; }
  .share { padding: 0 16px; }
  .head h1 { font-size: 22px; }
}