/* 术曲社区 — 年轻科技社区风：清爽浅色底 + 克制的蓝紫点缀
   遵循 Prescado UI 铁律：无毛玻璃、无渐变文字、无发光阴影、无装饰性元素 */
:root {
  --bg: #f6f7fb;
  --bg-2: #eef0f7;
  --card: #ffffff;
  --ink: #171922;
  --ink-2: #474c5e;
  --ink-3: #636a80;
  --line: #e5e8f0;
  --line-2: #d9ddea;
  --brand: #5b5bf0;
  --brand-2: #7c4ff0;
  --brand-ink: #4a4ae0;
  /* 渐变只做点缀用，出现在 logo / 主按钮 / 播放键这类小面积元素上。
     两端都保证白字对比度 ≥ 5:1（实测 5.36 / 6.17） */
  --grad: linear-gradient(135deg, #4f5ae4 0%, #6f42d4 100%);
  --grad-soft: rgba(91,91,240,.09);
  --r-s: 8px;
  --r-m: 12px;
  --r-l: 16px;
  --sh-1: 0 1px 2px rgba(23,25,34,.05);
  --sh-2: 0 2px 8px rgba(23,25,34,.07);
  --safe-b: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14151a;
    --bg-2: #1c1e25;
    --card: #1a1c22;
    --ink: #eceef5;
    --ink-2: #bcc1d2;
    --ink-3: #9aa0b4;
    --line: #282b34;
    --line-2: #343844;
    --brand: #7b7bff;
    --brand-2: #a78bfa;
    --brand-ink: #a5a5ff;
    --grad: linear-gradient(135deg, #5566ee 0%, #7645e2 100%);
    --grad-soft: rgba(123,123,255,.14);
    --sh-1: 0 1px 2px rgba(0,0,0,.28);
    --sh-2: 0 2px 8px rgba(0,0,0,.3);
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.sr {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

.wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; }

a { color: var(--brand-ink); text-decoration: none; }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; border-radius: 3px; }
button { font: inherit; color: inherit; }

::selection { background: rgba(124,79,240,.22); }

/* ------------------------------ 顶栏 ------------------------------ */

/* 铁律3：禁止玻璃拟态。顶栏用不透明背景，不做毛玻璃 */
.top {
  position: sticky; top: 0; z-index: 60;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.top-in { display: flex; align-items: center; gap: 16px; height: 58px; }

.brand { display: flex; align-items: center; gap: 9px; color: var(--ink); min-width: 0; }

.logo {
  display: grid; place-items: center;
  width: 32px; height: 32px; border-radius: 8px;
  background: var(--grad); color: #fff; flex: none;
}
.logo svg { width: 20px; height: 20px; }

.bt { display: flex; flex-direction: column; line-height: 1.15; font-weight: 650; font-size: 15px; }
.bt em { font-style: normal; font-size: 10.5px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); font-weight: 500; }

.top-nav { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.who { font-size: 13.5px; color: var(--ink-2); padding: 5px 11px; border-radius: var(--r-s); background: var(--bg-2); border: 1px solid var(--line); max-width: 42vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ------------------------------ 按钮 ------------------------------ */

.btn {
  appearance: none; border: 1px solid var(--line-2); background: var(--card);
  color: var(--ink); padding: 9px 16px; border-radius: var(--r-s); cursor: pointer;
  font-size: 14px; font-weight: 560; letter-spacing: .01em;
  transition: background .16s ease, border-color .16s ease, color .16s ease, transform .12s ease;
  white-space: nowrap;
}
.btn:hover { border-color: var(--brand); color: var(--brand-ink); }
.btn:active { transform: scale(.98); }
.btn:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }
.btn[disabled] { opacity: .55; cursor: default; transform: none; }

.btn.primary {
  background: var(--grad); border-color: transparent; color: #fff;
}
.btn.primary:hover { color: #fff; filter: brightness(.96); }
.btn.ghost { background: transparent; }
.btn.thin { padding: 7px 13px; font-size: 13.5px; }
.btn.danger { border-color: #e5b4b4; color: #b4472f; }
@media (prefers-color-scheme: dark) { .btn.danger { border-color: #6a3a3a; color: #f0a58f; } }

.linkbtn {
  background: none; border: 0; color: var(--brand-ink); cursor: pointer;
  font-size: 13.5px; padding: 4px 2px;
}
.linkbtn:hover { text-decoration: underline; }

/* ------------------------------ Hero ------------------------------ */

.hero {
  display: flex; gap: 28px; align-items: center; flex-wrap: wrap;
  margin: 26px 0 8px; padding: 22px 24px;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-l); box-shadow: var(--sh-1);
  position: relative; overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 3px;
  background: var(--grad);
}
.hero-txt { flex: 1 1 320px; min-width: 0; }
.hero h1 {
  margin: 0 0 8px; font-size: 25px; line-height: 1.25; letter-spacing: -.015em; font-weight: 700;
  color: var(--ink);
}
.hero p { margin: 0 0 18px; color: var(--ink-2); font-size: 14.5px; max-width: 46ch; }
.hero-cta { display: flex; gap: 8px; flex-wrap: wrap; }

.hero-stats { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; flex: 0 1 300px; min-width: 0; }
.stat {
  background: var(--bg-2); border-radius: var(--r-m); padding: 11px 13px;
  border: 1px solid var(--line);
}
.stat b { display: block; font-size: 20px; font-weight: 700; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.stat span { font-size: 11.5px; color: var(--ink-3); letter-spacing: .02em; }

/* ------------------------------ 区块 ------------------------------ */

.sec { margin: 26px 0; }
.sec-head {
  display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap;
  margin-bottom: 13px; padding-bottom: 0;
}
.sec-head h2 { margin: 0; font-size: 16.5px; font-weight: 650; letter-spacing: .01em; }
.sec-note { font-size: 12.5px; color: var(--ink-3); }

.card-flat {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-l); padding: 16px 17px 8px; box-shadow: var(--sh-1);
}

/* ------------------------------ 板块网格 ------------------------------ */

.board-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

.board {
  display: block; text-align: left; cursor: pointer;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-m); padding: 14px 15px 13px;
  transition: border-color .16s ease, background .16s ease;
}
.board:hover { border-color: var(--line-2); background: var(--bg-2); }
.board:active { transform: scale(.995); }
.board:focus-visible { outline: 2px solid var(--brand); outline-offset: 2px; }

.b-icon {
  display: grid; place-items: center; width: 30px; height: 30px; margin-bottom: 9px;
  border-radius: 7px; background: var(--grad-soft); color: var(--brand-ink);
  font-size: 14px; font-weight: 600;
}
.board h3 { margin: 0 0 4px; font-size: 14.5px; font-weight: 620; }
.board p { margin: 0 0 9px; font-size: 12.5px; color: var(--ink-3); line-height: 1.5; min-height: 2.9em; }
.board .n { font-size: 11.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.board .n b { color: var(--ink-2); font-weight: 600; }

/* ------------------------------ 两栏 ------------------------------ */

.cols { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 22px; align-items: start; }
.col-side { min-width: 0; }

@media (max-width: 900px) {
  .cols { grid-template-columns: 1fr; }
  .board-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ------------------------------ 帖子列表 ------------------------------ */

.tabs { display: inline-flex; gap: 3px; padding: 3px; background: var(--bg-2); border-radius: 999px; margin-left: auto; }
.tab {
  border: 0; background: transparent; cursor: pointer; color: var(--ink-2);
  padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 540;
  transition: background .16s ease, color .16s ease;
}
.tab:hover { color: var(--ink); }
.tab.on { background: var(--card); color: var(--brand-ink); box-shadow: var(--sh-1); }

.thread-list { display: flex; flex-direction: column; gap: 10px; }

.thread {
  display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: start;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-m); padding: 13px 15px;
  box-shadow: var(--sh-1);
  transition: transform .14s ease, box-shadow .18s ease, border-color .16s ease;
}
.thread:hover { transform: translateY(-1px); box-shadow: var(--sh-2); border-color: var(--line-2); }
.thread.on { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(91,91,240,.10), var(--sh-1); }

.t-main { min-width: 0; }

.t-tag {
  display: inline-block; font-size: 11.5px; font-weight: 600; color: var(--brand-ink);
  background: var(--grad-soft); border-radius: 6px; padding: 2px 7px; margin-bottom: 5px;
}
.t-title { font-size: 15.5px; font-weight: 600; line-height: 1.45; letter-spacing: -.005em; color: var(--ink); padding: 6px 0; }
a.t-title:hover { color: var(--brand-ink); }

.t-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 7px; margin-top: 5px; font-size: 12.5px; color: var(--ink-3); }
.t-meta .au { color: var(--ink-2); font-weight: 540; }
.t-meta .sep { opacity: .5; }

.t-excerpt {
  margin: 7px 0 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.55;
  display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.t-side { display: flex; align-items: center; gap: 12px; }

.t-play {
  width: 38px; height: 38px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--grad); color: #fff; display: grid; place-items: center;
  transition: transform .13s ease, filter .16s ease;
  flex: none;
}
.t-play svg { width: 15px; height: 15px; }
.t-play:hover { filter: brightness(1.06); }
.t-play:active { transform: scale(.9); }

.t-stat { text-align: right; font-size: 11.5px; color: var(--ink-3); line-height: 1.35; font-variant-numeric: tabular-nums; }
.t-stat b { display: block; font-size: 14px; color: var(--ink-2); font-weight: 600; }

.vacant {
  background: var(--card); border: 1px dashed var(--line-2); border-radius: var(--r-m);
  padding: 30px 20px; text-align: center; color: var(--ink-3); font-size: 13.5px;
}

.more {
  display: block; width: 100%; margin-top: 12px; padding: 11px;
  background: var(--card); border: 1px solid var(--line-2); border-radius: var(--r-m);
  color: var(--ink-2); cursor: pointer; font-size: 13.5px; font-weight: 540;
  transition: color .16s ease, border-color .16s ease;
}
.more:hover { color: var(--brand-ink); border-color: var(--brand); }

/* ------------------------------ 动态流 ------------------------------ */

.feed { list-style: none; margin: 0; padding: 0; }
.feed li { display: flex; gap: 10px; padding: 9px 0; border-top: 1px solid var(--line); }
.feed li:first-child { border-top: 0; padding-top: 2px; }
.f-dot { width: 7px; height: 7px; border-radius: 50%; margin-top: 7px; flex: none; }
.f-dot.post { background: var(--grad); }
.f-dot.reply { background: var(--line-2); }
.f-txt { min-width: 0; font-size: 13px; line-height: 1.5; color: var(--ink-2); }
.f-txt a { font-weight: 560; padding: 5px 0; }
.f-txt .q { color: var(--ink-3); display: block; font-size: 12.5px; margin-top: 1px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.f-txt time { color: var(--ink-3); font-size: 11.5px; display: block; margin-top: 2px; }

.members { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.members li { display: flex; align-items: center; gap: 10px; }
.m-av {
  width: 30px; height: 30px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: var(--grad); color: #fff; font-size: 12.5px; font-weight: 600;
}
.m-name { font-size: 13.5px; font-weight: 560; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.m-sub { font-size: 11.5px; color: var(--ink-3); }
.members .m-right { margin-left: auto; text-align: right; font-size: 11.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }

.rules { margin: 0; padding-left: 18px; color: var(--ink-2); font-size: 13px; line-height: 1.75; }
.rules li { margin-bottom: 3px; }
.rule-card { padding-bottom: 16px; }

/* ------------------------------ 弹层 ------------------------------ */

.mask {
  position: fixed; inset: 0; z-index: 90; background: rgba(15,17,26,.42);
  opacity: 0; pointer-events: none; transition: opacity .22s ease;
}
.mask.on { opacity: 1; pointer-events: auto; }

.sheet {
  position: fixed; z-index: 100; left: 50%; bottom: 0; width: min(560px, 100%);
  transform: translate(-50%, 100%);
  background: var(--card); border-radius: var(--r-l) var(--r-l) 0 0;
  box-shadow: 0 -8px 44px rgba(15,17,26,.22);
  padding: 8px 22px calc(24px + var(--safe-b));
  max-height: 92vh; overflow-y: auto; overscroll-behavior: contain;
  transition: transform .3s cubic-bezier(.22,.9,.28,1);
  -webkit-overflow-scrolling: touch;
}
.sheet.on { transform: translate(-50%, 0); }
.sheet-grip { width: 38px; height: 4px; border-radius: 2px; background: var(--line-2); margin: 4px auto 12px; }
.sheet-title { margin: 0 0 16px; font-size: 17px; font-weight: 650; }

@media (min-width: 761px) {
  .sheet { top: 50%; bottom: auto; border-radius: var(--r-l); transform: translate(-50%, -46%) scale(.97); opacity: 0; padding-bottom: 24px; }
  .sheet.on { transform: translate(-50%, -50%) scale(1); opacity: 1; }
  .sheet-grip { display: none; }
}

.segs { display: flex; gap: 4px; padding: 4px; background: var(--bg-2); border-radius: 999px; margin-bottom: 18px; }
.seg {
  flex: 1; border: 0; background: transparent; cursor: pointer; color: var(--ink-2);
  padding: 8px; border-radius: 999px; font-size: 13.5px; font-weight: 560;
  transition: background .16s ease, color .16s ease;
}
.seg:hover { color: var(--ink); }
.seg.on { background: var(--card); color: var(--brand-ink); box-shadow: var(--sh-1); }

.f { margin-bottom: 14px; }
.f label { display: block; font-size: 13px; font-weight: 560; margin-bottom: 6px; color: var(--ink); }
.f label small { font-weight: 400; color: var(--ink-3); margin-left: 5px; font-size: 12px; }
.f input[type=text], .f input[type=password], .f input[type=email], .f textarea, .f select {
  width: 100%; padding: 10px 13px; font: inherit; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line-2); border-radius: var(--r-s);
  transition: border-color .16s ease, box-shadow .16s ease;
  appearance: none;
}
.f select {
  background-image: url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2.5 4.5L6 8l3.5-3.5' fill='none' stroke='%237d8397' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center; background-size: 12px;
  padding-right: 34px;
}
.f textarea { min-height: 108px; resize: vertical; line-height: 1.6; }
.f input:focus, .f textarea:focus, .f select:focus {
  outline: none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(91,91,240,.12);
}
.f input[type=file] {
  width: 100%; font-size: 13px; padding: 9px 12px;
  background: var(--bg); border: 1px dashed var(--line-2); border-radius: var(--r-s); color: var(--ink-2);
}
.f input[type=file]::file-selector-button {
  font: inherit; font-size: 13px; margin-right: 11px; padding: 5px 13px; cursor: pointer;
  border: 1px solid var(--line-2); border-radius: var(--r-s); background: var(--card); color: var(--ink);
}
.note { margin: 6px 0 0; font-size: 12px; color: var(--ink-3); line-height: 1.5; }
.note a { padding: 7px 3px; }
.note.lead { margin: 0 0 16px; font-size: 13px; }

.warn {
  display: none; margin: 0 0 14px; padding: 9px 13px; border-radius: var(--r-s);
  background: rgba(180,71,47,.08); border: 1px solid rgba(180,71,47,.22);
  color: #b4472f; font-size: 13px;
}
.warn.on { display: block; }

.code-row { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; align-items: start; }
.code-row .btn { margin-top: 0; }

.sheet-foot { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }
.sheet-foot.col { flex-direction: column; }
.sheet-foot.col .btn { width: 100%; }

/* ------------------------------ PoW 进度 ------------------------------ */

.powbar {
  position: fixed; z-index: 120; left: 50%; transform: translateX(-50%);
  bottom: calc(112px + var(--safe-b)); width: min(320px, calc(100% - 40px));
  background: var(--card); border: 1px solid var(--line); border-radius: 999px;
  box-shadow: var(--sh-2); padding: 9px 16px;
}
.powbar[hidden] { display: none; }
.powbar-in { display: flex; align-items: center; gap: 11px; }
.pb-track { flex: 1; height: 5px; border-radius: 3px; background: var(--bg-2); overflow: hidden; }
.pb-fill { height: 100%; width: 0; border-radius: 3px; background: var(--grad); transition: width .18s ease; }
.pb-txt { font-size: 12px; color: var(--ink-2); white-space: nowrap; font-variant-numeric: tabular-nums; }

/* ------------------------------ 详情页 ------------------------------ */

.crumb {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 13.5px; color: var(--ink-3); margin-bottom: 16px;
  padding: 6px 10px 6px 8px; margin-left: -8px; border-radius: var(--r-s);
  transition: background .16s ease, color .16s ease;
}
.crumb:hover { color: var(--brand-ink); background: var(--bg-2); }

.post { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-l); box-shadow: var(--sh-1); padding: 20px 22px; }

.d-head { display: flex; gap: 16px; align-items: flex-start; }
.d-art {
  width: 76px; height: 76px; border-radius: var(--r-m); flex: none;
  background: var(--grad); color: #fff; display: grid; place-items: center;
  font-size: 28px; background-size: cover; background-position: center;
}
.d-headmain { min-width: 0; flex: 1; }
.d-title { margin: 0 0 7px; font-size: 21px; line-height: 1.35; font-weight: 700; letter-spacing: -.015em; word-break: break-word; }
.d-meta { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; font-size: 12.5px; color: var(--ink-3); }
.d-meta .au { color: var(--ink-2); font-weight: 560; }
.d-meta .sep { opacity: .5; }

.d-body {
  margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: 15px; line-height: 1.78; color: var(--ink-2);
  white-space: pre-wrap; word-break: break-word;
}

.d-play {
  display: flex; align-items: center; gap: 12px; margin-top: 18px;
  padding: 11px 15px; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--r-m);
}
.d-play .ico.pp { width: 38px; height: 38px; }
.d-play .dp-txt { font-size: 13px; color: var(--ink-2); }
.d-play .dp-txt b { display: block; font-size: 13.5px; color: var(--ink); font-weight: 600; }
.d-play .dp-txt span { font-size: 11.5px; color: var(--ink-3); }

.talk { margin: 26px 0 0; }
.talk .sec-head { margin-bottom: 10px; }
.cmt {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r-m);
  padding: 12px 15px; margin-bottom: 9px; box-shadow: var(--sh-1);
}
.cmt-head { display: flex; align-items: baseline; gap: 9px; margin-bottom: 5px; }
.cmt-head b { font-size: 13.5px; font-weight: 600; }
.cmt-head time { font-size: 11.5px; color: var(--ink-3); }
.cmt-body { font-size: 14.5px; line-height: 1.7; color: var(--ink-2); white-space: pre-wrap; word-break: break-word; }

#talk-form {
  margin-top: 16px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--r-m); padding: 15px 16px 16px; box-shadow: var(--sh-1);
}

/* ------------------------------ 播放器 ------------------------------ */

.player {
  position: fixed; z-index: 80; left: 0; right: 0; bottom: 0;
  background: var(--card);
  border-top: 1px solid var(--line);
  padding: 9px 20px calc(9px + var(--safe-b));
  transform: translateY(110%); transition: transform .3s cubic-bezier(.22,.9,.28,1);
}
.player.on { transform: translateY(0); }

.p-main { display: flex; align-items: center; gap: 13px; max-width: 1120px; margin: 0 auto; }

.p-cover {
  width: 42px; height: 42px; border-radius: 9px; flex: none;
  background: var(--grad); display: grid; place-items: center; color: #fff; font-size: 17px;
  background-size: cover; background-position: center;
}
.p-info { flex: 1; min-width: 0; }
.p-name { font-size: 13.5px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.p-by { font-size: 11.5px; color: var(--ink-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.p-ctl { display: flex; align-items: center; gap: 4px; flex: none; }
.ico {
  border: 0; background: transparent; cursor: pointer; color: var(--ink-2);
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  transition: background .16s ease, color .16s ease, transform .13s ease;
}
.ico svg { width: 16px; height: 16px; }
.ico:hover { background: var(--bg-2); color: var(--ink); }
.ico:active { transform: scale(.9); }
.ico.pp { width: 40px; height: 40px; background: var(--grad); color: #fff; }
.ico.pp svg { width: 17px; height: 17px; }
.ico.pp:hover { color: #fff; filter: brightness(1.06); }
.ico.step { opacity: .75; }

.p-bar { display: flex; align-items: center; gap: 10px; max-width: 1120px; margin: 6px auto 0; }
.clock { font-size: 11px; color: var(--ink-3); font-variant-numeric: tabular-nums; width: 34px; flex: none; }
.clock.r { text-align: right; }
.bar {
  flex: 1; appearance: none; height: 4px; border-radius: 2px; background: var(--line-2);
  cursor: pointer; min-width: 0;
}
.bar::-webkit-slider-thumb {
  appearance: none; width: 12px; height: 12px; border-radius: 50%;
  background: var(--brand-2); border: 0; cursor: pointer;
}
.bar::-moz-range-thumb {
  width: 12px; height: 12px; border: 0; border-radius: 50%;
  background: var(--brand-2); cursor: pointer;
}

/* ------------------------------ 提示 ------------------------------ */

.tip {
  position: fixed; z-index: 130; left: 50%; transform: translate(-50%, 12px);
  bottom: calc(96px + var(--safe-b));
  background: rgba(23,25,34,.94); color: #fff; padding: 9px 18px; border-radius: 999px;
  font-size: 13.5px; box-shadow: var(--sh-2);
  opacity: 0; pointer-events: none; transition: opacity .2s ease, transform .24s cubic-bezier(.22,.9,.28,1);
  max-width: calc(100% - 40px); text-align: center;
}
.tip.on { opacity: 1; transform: translate(-50%, 0); }

/* 播放器可见时给页面底部留白 */
body { padding-bottom: 0; }
body.has-player { padding-bottom: 106px; }
@media (min-width: 761px) { body.has-player { padding-bottom: 112px; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}