/* ============================================================================
 * 耳返模式 Demo · QQ 音乐手机端皮肤
 * 说明：内部演示原型，视觉参考 QQ 音乐手机版播放页；非官方产品。
 * ==========================================================================*/

:root{
  --green:#31C27C;
  --green-d:#22A366;
  --green-l:#5AD79C;
  --ink:#141922;
  --ink-2:#5C6675;
  --ink-3:#98A2B0;
  --line:#EDEFF3;
  --bg:#F6F7F9;
  --warn:#FF7A45;
  --radius:16px;
}

*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
html,body{height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  background:#0b0e13;
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;display:block}
.sprite{position:absolute;width:0;height:0;overflow:hidden}
.tiny{font-size:11px;color:var(--ink-3);line-height:1.6}
.center{text-align:center}
code{background:#F0F2F5;border-radius:4px;padding:1px 5px;font-size:10.5px;color:#4B5563}

/* ============================ 舞台 / 手机壳 ============================ */

.stage{
  min-height:100dvh;
  display:flex;align-items:center;justify-content:center;gap:56px;
  padding:36px 28px;
  background:
    radial-gradient(900px 520px at 22% -10%,#1d3a2c 0%,transparent 62%),
    radial-gradient(760px 480px at 88% 108%,#1a2a3d 0%,transparent 60%),
    #0b0e13;
}

.phone{
  position:relative;
  width:390px;
  height:min(844px,calc(100dvh - 72px));
  min-height:600px;
  border-radius:46px;
  background:#fff;
  overflow:hidden;
  flex:none;
  box-shadow:
    0 0 0 11px #171b21,
    0 0 0 13px #2b313a,
    0 0 0 14px #0a0c10,
    0 42px 90px rgba(0,0,0,.62);
}
.phone-notch{
  position:absolute;top:10px;left:50%;transform:translateX(-50%);
  width:116px;height:31px;border-radius:18px;background:#05070a;z-index:60;
  pointer-events:none;
}
.screen{position:absolute;inset:0;overflow:hidden;background:#fff}

.statusbar{
  position:absolute;top:0;left:0;right:0;height:52px;z-index:55;
  display:flex;align-items:flex-end;justify-content:space-between;
  padding:0 30px 7px;pointer-events:none;
  color:var(--ink);font-size:13.5px;font-weight:700;letter-spacing:.2px;
  transition:color .3s;
}
.phone.is-player .statusbar{color:#fff}
.sb-icons{display:flex;align-items:center;gap:5px}
.sb-sig{display:flex;align-items:flex-end;gap:1.5px;height:11px}
.sb-sig b{width:3px;border-radius:1px;background:currentColor;display:block}
.sb-sig b:nth-child(1){height:4px}.sb-sig b:nth-child(2){height:6px}
.sb-sig b:nth-child(3){height:8.5px}.sb-sig b:nth-child(4){height:11px}
.sb-wifi{width:15px;height:11px;background:currentColor;border-radius:2px;
  clip-path:polygon(0 62%,50% 12%,100% 62%,86% 62%,50% 30%,14% 62%)}
.sb-batt{width:23px;height:11.5px;border:1.4px solid currentColor;border-radius:3.4px;
  position:relative;display:block;opacity:.9}
.sb-batt::after{content:'';position:absolute;right:-3.4px;top:3px;width:2px;height:5px;
  background:currentColor;border-radius:0 2px 2px 0}
.sb-batt b{position:absolute;inset:1.6px;width:68%;background:currentColor;border-radius:1.6px;display:block}

.homebar{
  position:absolute;bottom:9px;left:50%;transform:translateX(-50%);
  width:136px;height:5px;border-radius:3px;background:rgba(20,25,34,.26);
  z-index:58;pointer-events:none;transition:background .3s;
}
.phone.is-player .homebar{background:rgba(255,255,255,.42)}

/* ============================ 页面切换 ============================ */

.page{
  position:absolute;inset:0;display:flex;flex-direction:column;
  opacity:0;visibility:hidden;
  transition:opacity .26s ease,transform .3s cubic-bezier(.4,0,.2,1);
}
.page.is-active{opacity:1;visibility:visible;transform:none}
.page-list{background:var(--bg);transform:translateX(-16px)}
.page-player{background:#0b0e13;color:#fff;transform:translateY(20px)}

/* ============================ ① 歌单页 ============================ */

.list-head{
  padding:62px 20px 20px;
  background:linear-gradient(155deg,#3ACB87 0%,#31C27C 42%,#1E9A60 100%);
  color:#fff;border-radius:0 0 24px 24px;flex:none;
}
.lh-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.lh-logo{font-size:14px;font-weight:800;letter-spacing:.6px}
.lh-tag{font-size:10px;border:1px solid rgba(255,255,255,.5);border-radius:99px;padding:2px 8px;opacity:.92}
.list-head h1{font-size:25px;letter-spacing:1px;margin-bottom:6px}
.list-head p{font-size:12.5px;opacity:.88}
.lh-search{
  margin-top:16px;background:rgba(255,255,255,.2);border-radius:99px;
  padding:9px 14px;display:flex;align-items:center;gap:8px;font-size:12.5px;opacity:.96;
  backdrop-filter:blur(6px);
}
.lh-search svg{width:16px;height:16px;stroke-width:2}

.list-body{flex:1;overflow-y:auto;padding:16px 12px 30px}
.list-sec{display:flex;align-items:baseline;gap:8px;padding:2px 8px 8px}
.list-sec h2{font-size:14.5px}
.list-sec em{font-style:normal;font-size:11px;color:var(--ink-3)}

.songlist{list-style:none}
.songlist li{
  display:flex;align-items:center;gap:12px;padding:9px 8px;border-radius:14px;
  transition:background .18s;
}
.songlist li:active{background:rgba(20,25,34,.05)}
.songlist li.playing{background:rgba(49,194,124,.09)}
.song-cover{
  width:52px;height:52px;border-radius:13px;flex:none;
  display:grid;place-items:center;color:#fff;font-size:17px;font-weight:700;
  letter-spacing:1px;box-shadow:0 3px 10px rgba(20,25,34,.16);position:relative;overflow:hidden;
}
.song-cover::after{content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 30% 22%,rgba(255,255,255,.34),transparent 62%)}
.song-meta{flex:1;min-width:0}
.song-meta b{display:block;font-size:14.5px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-meta span{font-size:11.5px;color:var(--ink-3);display:block;margin-top:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.song-tail{display:flex;flex-direction:column;align-items:flex-end;gap:5px;flex:none}
.badge-ear{
  font-size:9.5px;font-weight:700;padding:2.5px 7px;border-radius:99px;
  background:rgba(49,194,124,.13);color:var(--green-d);
  border:1px solid rgba(49,194,124,.3);white-space:nowrap;
}
.badge-ear.off{background:#F1F3F6;color:#AAB2BE;border-color:#E4E8EE}
/* 「换人」标记：与「耳返」区分开，用中性蓝，避免看起来像"更好的那首" */
.badge-swap{
  font-size:9.5px;font-weight:700;padding:2.5px 7px;border-radius:99px;
  background:rgba(64,120,220,.13);color:#2C5FB8;
  border:1px solid rgba(64,120,220,.3);white-space:nowrap;
}
.song-time{font-size:11px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.eq{display:flex;align-items:flex-end;gap:2px;height:12px}
.eq i{width:2.5px;background:var(--green);border-radius:2px;animation:eqb .9s ease-in-out infinite}
.eq i:nth-child(1){height:5px;animation-delay:0s}
.eq i:nth-child(2){height:11px;animation-delay:.15s}
.eq i:nth-child(3){height:7px;animation-delay:.3s}
@keyframes eqb{0%,100%{transform:scaleY(.45)}50%{transform:scaleY(1)}}

.list-foot{padding:18px 10px 6px;display:flex;flex-direction:column;gap:7px}

/* ============================ ② 播放页 ============================ */

.player-bg{position:absolute;inset:0;overflow:hidden;z-index:0}
.player-bg i{
  position:absolute;inset:-18%;display:block;
  background:radial-gradient(circle at 50% 36%,#2f8f66,#123c2c 62%,#0b0e13 100%);
  filter:blur(46px) saturate(1.35);transform:scale(1.2);
  transition:background .6s ease;
}
.player-bg::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(6,8,11,.5) 0%,rgba(6,8,11,.74) 46%,rgba(6,8,11,.94) 100%);
}
.page-player>*:not(.player-bg){position:relative;z-index:1}

.pl-top{display:flex;align-items:center;gap:8px;padding:60px 14px 6px;flex:none}
.pl-title{flex:1;text-align:center;min-width:0;line-height:1.3}
.pl-title b{display:block;font-size:15px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pl-title span{font-size:11.5px;opacity:.6}
.ic-btn{width:38px;height:38px;display:grid;place-items:center;color:#fff;opacity:.92;border-radius:50%}
.ic-btn:active{background:rgba(255,255,255,.1)}
.ic-btn svg{width:22px;height:22px}

.pl-stage{flex:1;position:relative;min-height:0;display:grid;place-items:center;padding:6px 0}

.disc-wrap{
  position:relative;width:min(66%,258px);aspect-ratio:1;
  display:grid;place-items:center;
  transition:opacity .32s ease,transform .38s cubic-bezier(.3,0,.2,1);
}
.disc{
  width:100%;height:100%;border-radius:50%;position:relative;
  display:grid;place-items:center;
  background:
    repeating-radial-gradient(circle at 50% 50%,rgba(255,255,255,.05) 0 1px,transparent 1px 5px),
    radial-gradient(circle at 50% 50%,#2b3138 0%,#151a1f 58%,#0a0d11 100%);
  box-shadow:0 22px 56px rgba(0,0,0,.66),inset 0 0 0 1px rgba(255,255,255,.06);
  animation:spin 26s linear infinite;animation-play-state:paused;
}
.phone.playing .disc{animation-play-state:running}
@keyframes spin{to{transform:rotate(360deg)}}
.disc-ring{position:absolute;width:78%;height:78%;border-radius:50%;
  border:1px solid rgba(255,255,255,.07)}
.disc-cover{
  width:60%;height:60%;border-radius:50%;display:grid;place-items:center;
  color:#fff;font-size:19px;font-weight:700;letter-spacing:2px;position:relative;
  box-shadow:0 5px 20px rgba(0,0,0,.4),inset 0 0 0 5px rgba(255,255,255,.08);
}
.disc-cover::after{content:'';position:absolute;width:9px;height:9px;border-radius:50%;
  background:#0b0e13;box-shadow:inset 0 0 0 1px rgba(255,255,255,.35)}
.tonearm{
  position:absolute;top:-5%;right:-4%;width:38%;height:52%;
  transform-origin:84% 12%;transform:rotate(-19deg);
  transition:transform .5s cubic-bezier(.3,0,.2,1);pointer-events:none;
}
.phone.playing .tonearm{transform:rotate(-2deg)}
.tonearm::before{
  content:'';position:absolute;top:0;right:8%;width:26px;height:26px;border-radius:50%;
  background:radial-gradient(circle at 34% 30%,#f2f4f7,#98a1ad 70%);
  box-shadow:0 3px 9px rgba(0,0,0,.5);
}
.tonearm i{
  position:absolute;top:12px;right:calc(8% + 11px);width:4.5px;height:76%;
  background:linear-gradient(180deg,#e6e9ee,#9aa3b0);border-radius:3px;
  transform-origin:top center;transform:rotate(16deg);
}
.tonearm i::after{
  content:'';position:absolute;bottom:-7px;left:-4.5px;width:13px;height:14px;border-radius:3px;
  background:linear-gradient(180deg,#cfd5dd,#8b939f);
}
.disc-hint{
  position:absolute;bottom:-30px;left:0;right:0;text-align:center;
  font-size:10.5px;color:rgba(255,255,255,.34);
}

/* 歌词层 */
.lyric-wrap{
  position:absolute;inset:0;overflow:hidden;
  padding:0 24px;opacity:0;pointer-events:none;
  transition:opacity .3s ease;
  -webkit-mask-image:linear-gradient(180deg,transparent,#000 22%,#000 78%,transparent);
  mask-image:linear-gradient(180deg,transparent,#000 22%,#000 78%,transparent);
}
/* 上下内边距由 JS 设为视窗一半，保证首尾行也能滚到正中央 */
.lyric-inner{width:100%;text-align:center;transition:transform .45s cubic-bezier(.3,0,.2,1)}
.lyric-line{
  font-size:15.5px;line-height:1.62;padding:6px 0;
  color:rgba(255,255,255,.34);transition:color .3s,font-size .3s,opacity .3s;
}
.lyric-line.on{color:#fff;font-size:19px;font-weight:700;text-shadow:0 2px 14px rgba(49,194,124,.45)}
.lyric-line.upcoming{color:rgba(255,255,255,.62)}
.lyric-hint{bottom:6px}
.pl-stage.lyrics .disc-wrap{opacity:0;transform:scale(.9);pointer-events:none}
.pl-stage.lyrics .lyric-wrap{opacity:1;pointer-events:auto}
.pl-stage:not(.lyrics) .lyric-wrap{pointer-events:none}

/* 进度条 */
.pl-progress{
  display:flex;align-items:center;gap:10px;padding:2px 22px 0;flex:none;
  font-size:11px;color:rgba(255,255,255,.5);font-variant-numeric:tabular-nums;
}
.prog{flex:1;height:28px;display:flex;align-items:center;cursor:pointer}
.prog-track{position:relative;width:100%;height:3px;border-radius:2px;background:rgba(255,255,255,.17)}
.prog-fill{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--green-l),var(--green))}
.prog-knob{
  position:absolute;top:50%;left:0;width:12px;height:12px;border-radius:50%;background:#fff;
  transform:translate(-50%,-50%);box-shadow:0 1px 6px rgba(0,0,0,.55);transition:transform .15s;
}
.prog:active .prog-knob{transform:translate(-50%,-50%) scale(1.35)}
.prog-loop{
  position:absolute;top:-3px;bottom:-3px;display:none;border-radius:3px;
  background:rgba(49,194,124,.28);
  border-left:2.5px solid var(--green);border-right:2.5px solid var(--green);
}

/* 功能条 */
.pl-actions{display:flex;justify-content:space-around;padding:8px 8px 2px;flex:none}
.act{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  font-size:10px;color:rgba(255,255,255,.6);padding:5px 6px;border-radius:12px;
}
.act:active{background:rgba(255,255,255,.07)}
.act svg{width:22px;height:22px}
.act-ear{color:var(--green)}
.act-ic{position:relative;display:inline-flex}
.new-dot{
  position:absolute;top:-8px;right:-19px;font-style:normal;
  background:linear-gradient(90deg,#FF5A5F,#FF9040);color:#fff;
  font-size:7.5px;font-weight:800;letter-spacing:.3px;
  padding:1.5px 5px;border-radius:99px;box-shadow:0 2px 7px rgba(255,90,95,.5);
}

/* 控制栏 */
.pl-controls{display:flex;align-items:center;justify-content:space-between;
  padding:8px 26px 34px;flex:none}
.ctl{color:#fff;display:grid;place-items:center;padding:6px;border-radius:50%}
.ctl svg{width:29px;height:29px}
.ctl:active{opacity:.65}
.ctl.play{
  width:60px;height:60px;border-radius:50%;
  background:linear-gradient(145deg,#42D38E,#22A366);
  box-shadow:0 10px 26px rgba(49,194,124,.42);
}
.ctl.play svg{width:26px;height:26px;stroke:none;fill:#fff}
.ctl.mode{display:flex;flex-direction:column;gap:2px;border-radius:12px}
.ctl.mode svg{width:21px;height:21px}
.ctl.mode span{font-size:8.5px;color:rgba(255,255,255,.55);letter-spacing:.2px}

/* ============================ ③ 耳返面板 ============================ */

.sheet{position:absolute;inset:0;z-index:70;pointer-events:none}
.sheet[data-state="half"],.sheet[data-state="full"]{pointer-events:auto}
.sheet-scrim{position:absolute;inset:0;background:rgba(0,0,0,.42);opacity:0;
  transition:opacity .3s;pointer-events:none}
.sheet[data-state="half"] .sheet-scrim,.sheet[data-state="full"] .sheet-scrim{opacity:1;pointer-events:auto}

.sheet-panel{
  position:absolute;left:0;right:0;bottom:0;height:60%;
  background:#fff;border-radius:24px 24px 0 0;
  display:flex;flex-direction:column;overflow:hidden;
  transform:translateY(102%);
  transition:transform .34s cubic-bezier(.32,0,.2,1),height .3s cubic-bezier(.32,0,.2,1);
  box-shadow:0 -12px 40px rgba(0,0,0,.3);
}
.sheet[data-state="half"] .sheet-panel{transform:none}
.sheet[data-state="full"] .sheet-panel{transform:none;height:94%}

.sheet-grip{padding:9px 0 3px;display:grid;place-items:center;cursor:grab;flex:none;touch-action:none}
.sheet-grip span{width:38px;height:4.5px;border-radius:3px;background:#DCE0E7;display:block}

.sheet-head{display:flex;align-items:center;gap:12px;padding:4px 20px 14px;
  border-bottom:1px solid var(--line);flex:none}
.sh-text{flex:1;min-width:0}
.sh-text h2{font-size:18px;display:flex;align-items:center;gap:7px}
.tag-new{
  font-style:normal;font-size:9px;font-weight:800;letter-spacing:.5px;color:#fff;
  background:linear-gradient(90deg,#FF5A5F,#FF9040);padding:2px 6px;border-radius:99px;
}
.sh-text p{font-size:11.5px;color:var(--ink-3);margin-top:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.sheet-body{flex:1;overflow-y:auto;padding:16px 18px 30px;overscroll-behavior:contain}

.switch{position:relative;flex:none;display:inline-block;width:50px;height:29px}
.switch input{position:absolute;opacity:0;width:0;height:0}
.switch i{position:absolute;inset:0;border-radius:99px;background:#D9DEE5;
  transition:background .24s;cursor:pointer}
.switch i::after{content:'';position:absolute;top:3px;left:3px;width:23px;height:23px;border-radius:50%;
  background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.28);transition:transform .24s}
.switch input:checked+i{background:var(--green)}
.switch input:checked+i::after{transform:translateX(21px)}

/* 未开启态 */
.ear-off{text-align:center;padding:22px 10px 10px}
.ear-art{
  width:82px;height:82px;margin:0 auto 18px;border-radius:26px;display:grid;place-items:center;
  background:linear-gradient(150deg,rgba(49,194,124,.16),rgba(49,194,124,.06));
  color:var(--green);
}
.ear-art svg{width:40px;height:40px;stroke-width:1.6}
.ear-off h3{font-size:17px;margin-bottom:10px}
.ear-off p{font-size:12.5px;color:var(--ink-2);line-height:1.85;margin-bottom:22px}
.btn-primary{
  width:100%;padding:14px;border-radius:14px;color:#fff;font-size:15px;font-weight:600;
  background:linear-gradient(135deg,#3ACB87,#22A366);
  box-shadow:0 8px 22px rgba(49,194,124,.34);margin-bottom:12px;
}
.btn-primary:active{transform:scale(.985)}
.btn-ghost{
  width:100%;padding:13px;border-radius:14px;border:1px solid var(--line);
  color:var(--ink-2);font-size:13.5px;margin-top:6px;
}
.btn-ghost:active{background:#F6F7F9}

/* 区块 */
.blk{margin-bottom:20px}
.blk-t{font-size:13px;font-weight:700;margin-bottom:10px;display:flex;align-items:baseline;gap:7px}
.blk-t span{font-size:10.5px;font-weight:400;color:var(--ink-3)}

/* 视角预设 */
.presets{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.preset{
  border:1.5px solid var(--line);border-radius:14px;padding:11px 12px;background:#fff;
  text-align:left;transition:border-color .2s,background .2s,transform .1s;
}
.preset:active{transform:scale(.975)}
.preset em{font-style:normal;font-size:16px;line-height:1}
.preset b{display:block;font-size:13px;margin:5px 0 2px}
.preset span{font-size:10px;color:var(--ink-3)}
.preset.on{border-color:var(--green);background:rgba(49,194,124,.07)}
.preset.on b{color:var(--green-d)}

/* 混音台 */
.console{
  display:flex;gap:4px;border-radius:18px;padding:16px 6px 30px;
  background:linear-gradient(180deg,#F5F7FA,#E9EDF3);
  box-shadow:inset 0 1px 2px rgba(255,255,255,.9),inset 0 -1px 3px rgba(20,25,34,.05);
}
.fader{flex:1;display:flex;flex-direction:column;align-items:center;gap:9px}
.fader-rail{
  position:relative;width:46px;height:142px;border-radius:12px;background:#fff;
  box-shadow:inset 0 1px 4px rgba(20,25,34,.1);touch-action:none;cursor:grab;
}
.fader-rail:active{cursor:grabbing}
.fader-rail::before{
  content:'';position:absolute;left:50%;top:12px;bottom:12px;width:3px;
  transform:translateX(-50%);border-radius:2px;background:#EAEDF2;
}
.fader-fill{
  position:absolute;left:50%;bottom:12px;width:3px;border-radius:2px;
  transform:translateX(-50%);background:linear-gradient(180deg,var(--green-l),var(--green));
  height:0;pointer-events:none;
}
.fader-cap{
  position:absolute;left:50%;bottom:12px;width:36px;height:23px;border-radius:7px;
  transform:translate(-50%,50%);pointer-events:none;
  background:linear-gradient(180deg,#fff,#E3E7EE);
  border:1px solid #D2D8E1;
  box-shadow:0 3px 8px rgba(20,25,34,.2),inset 0 1px 0 #fff;
}
.fader-cap::after{
  content:'';position:absolute;left:7px;right:7px;top:50%;height:2px;
  transform:translateY(-50%);background:#C0C7D3;border-radius:2px;
}
.fader[data-muted="1"] .fader-fill{background:#D6DBE3}
.fader-name{font-size:12px;font-weight:600;line-height:1}
.fader-val{font-size:10.5px;color:var(--ink-3);font-variant-numeric:tabular-nums;line-height:1}
.fader-mute{
  font-size:9.5px;padding:3px 9px;border-radius:99px;border:1px solid var(--line);
  color:var(--ink-3);background:#fff;
}
.fader-mute.on{background:var(--warn);border-color:var(--warn);color:#fff}
.fader.disabled{opacity:.4;pointer-events:none}
.gate{
  font-size:11px;color:var(--warn);background:rgba(255,122,69,.09);
  border-radius:10px;padding:9px 12px;margin-top:10px;line-height:1.6;
}
/* 素材体检提示：分轨退化时用中性灰蓝，和「隐藏节拍器」的橙色告警区分开 */
#stemWarn{color:#5B6B7F;background:rgba(91,107,127,.09)}

/* 节拍灯 */
.beatbar{
  display:flex;align-items:center;gap:12px;background:#F5F7FA;border-radius:14px;
  padding:12px 14px;margin-bottom:10px;
}
.lights{display:flex;gap:7px}
.lights i{width:13px;height:13px;border-radius:50%;background:#DDE2E9;
  transition:background .07s linear,box-shadow .07s linear}
.lights i.on{background:var(--green);box-shadow:0 0 11px rgba(49,194,124,.8)}
.lights i.on.head{background:var(--warn);box-shadow:0 0 12px rgba(255,122,69,.85)}
.bpm{margin-left:auto;text-align:right;line-height:1}
.bpm b{font-size:19px;font-variant-numeric:tabular-nums}
.bpm span{font-size:9px;color:var(--ink-3);display:block;margin-top:2px}
.barcount{font-size:11px;color:var(--ink-3);font-variant-numeric:tabular-nums}
.barcount b{color:var(--ink);font-size:13px}

.switches{display:flex;flex-direction:column}
.sw-row{display:flex;align-items:center;gap:12px;padding:11px 2px;border-bottom:1px solid var(--line)}
.sw-row:last-child{border-bottom:0}
.sw-row .sl{flex:1;min-width:0}
.sw-row .sl b{display:block;font-size:13px;font-weight:600}
.sw-row .sl span{font-size:10.5px;color:var(--ink-3)}

/* 练习工具 */
.loop-box,.rate-box{background:#F5F7FA;border-radius:14px;padding:13px 14px;margin-bottom:10px}
.loop-head,.rate-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:11px}
.loop-head strong,.rate-head strong{font-size:13px}
.loop-head span,.rate-head span{font-size:10.5px;color:var(--ink-3)}
.loop-ctrl{display:flex;gap:8px}
.mini{
  flex:1;padding:9px 4px;border-radius:10px;background:#fff;border:1px solid var(--line);
  font-size:12px;color:var(--ink);font-weight:500;
}
.mini:active{background:#EDF0F4}
.mini.ghost{color:var(--ink-3)}
.loop-vals{display:flex;gap:18px;margin-top:10px;font-size:11px;color:var(--ink-3);
  font-variant-numeric:tabular-nums}
.loop-vals b{color:var(--ink)}
.rate-row{display:flex;gap:8px}
.rate-btn{
  flex:1;padding:10px 0;border-radius:11px;background:#fff;border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-2);font-variant-numeric:tabular-nums;
}
.rate-btn.on{background:var(--green);border-color:var(--green);color:#fff;
  box-shadow:0 5px 14px rgba(49,194,124,.3)}
.rate-box .tiny{margin-top:9px}

/* ============================ 加载 / 提示 ============================ */

.loading{position:absolute;inset:0;z-index:90;display:grid;place-items:center;
  background:rgba(8,11,15,.72);backdrop-filter:blur(6px)}
.loading[hidden]{display:none}
.load-box{text-align:center;color:#fff;width:220px}
.spinner{
  width:36px;height:36px;margin:0 auto 16px;border-radius:50%;
  border:3px solid rgba(255,255,255,.2);border-top-color:var(--green);
  animation:rot .8s linear infinite;
}
@keyframes rot{to{transform:rotate(360deg)}}
.load-box p{font-size:12.5px;opacity:.9;margin-bottom:12px}
.load-bar{height:3px;border-radius:2px;background:rgba(255,255,255,.16);overflow:hidden}
.load-bar i{display:block;height:100%;width:0;background:var(--green);transition:width .3s}

.toast{
  position:absolute;left:50%;bottom:128px;transform:translateX(-50%);
  background:rgba(18,22,28,.9);color:#fff;font-size:12.5px;
  padding:10px 18px;border-radius:99px;z-index:95;max-width:80%;
  text-align:center;line-height:1.5;animation:tin .25s ease;
}
.toast[hidden]{display:none}
@keyframes tin{from{opacity:0;transform:translate(-50%,8px)}to{opacity:1;transform:translate(-50%,0)}}

/* ============================ 桌面侧说明 ============================ */

.side{width:340px;color:#C8D0DB;flex:none}
.side h1{font-size:20px;color:#fff;letter-spacing:.5px;margin-bottom:8px}
.side-sub{font-size:12.5px;color:var(--green);margin-bottom:22px;letter-spacing:.3px}
.side-steps{list-style:none;counter-reset:s;display:flex;flex-direction:column;gap:13px}
.side-steps li{
  counter-increment:s;position:relative;padding-left:34px;font-size:13px;
  line-height:1.75;color:#AEB8C6;
}
.side-steps li::before{
  content:counter(s);position:absolute;left:0;top:2px;
  width:22px;height:22px;border-radius:50%;display:grid;place-items:center;
  font-size:11px;font-weight:700;color:var(--green);
  background:rgba(49,194,124,.14);border:1px solid rgba(49,194,124,.34);
}
.side-steps b{color:#fff;font-weight:600}
.side-warn{
  margin-top:24px;font-size:12px;color:#FFCB8A;background:rgba(255,160,64,.1);
  border:1px solid rgba(255,160,64,.24);border-radius:12px;padding:11px 14px;line-height:1.7;
}
.side-meta{margin-top:16px;font-size:11.5px;color:#6C7787;line-height:1.7}

@media (max-width:1120px){ .side{display:none} }
@media (max-width:520px){
  .stage{padding:0;gap:0}
  .phone{width:100vw;height:100dvh;min-height:0;border-radius:0;box-shadow:none}
  .phone-notch{display:none}
}
@media (max-height:700px){
  .phone{height:calc(100dvh - 24px)}
}