/* =========================================================
   数学爬楼梯 · 甜欣乐园
   儿童糖果风 · 奶油底色 + 暖橙主色
   ========================================================= */
:root{
  --cream:#FFFBF3;
  --ink:#4B3A2C;
  --sub:#9C8770;
  --line:#F1E2CE;

  --orange:#FF9E45;  --orange-d:#E07F1C;
  --mint:#45C9A0;    --mint-d:#2C9E79;
  --violet:#A68BF5;  --violet-d:#7E5AE0;
  --pink:#FF7FA8;   --pink-d:#E25A85;
  --gold:#FFC63C;
  --blue:#5FB8FF;

  --r-lg:28px; --r-md:20px; --r-sm:14px;
  --shadow:0 18px 40px -18px rgba(160,110,60,.55);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;overflow:hidden;overscroll-behavior:none}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  color:var(--ink);
  background:linear-gradient(180deg,#DFF2FF 0%,#FFF1DE 60%,#FFE3CE 100%);
  user-select:none;
  -webkit-user-select:none;
}
button{font-family:inherit;color:inherit;border:0;background:none;cursor:pointer;padding:0}
input{font-family:inherit}
h1,h2{margin:0}

#stage{position:fixed;inset:0;overflow:hidden}
#game-canvas{position:absolute;inset:0;display:block;width:100%;height:100%;touch-action:none}

/* ===================== 顶部 HUD ===================== */
.hud{
  position:absolute;top:0;left:0;right:0;
  padding:calc(env(safe-area-inset-top,0px) + 10px) 12px 0;
  z-index:5;pointer-events:none;
  transition:opacity .35s ease, transform .35s ease;
}
.hud > *{pointer-events:auto}
.hud.dim{opacity:0;transform:translateY(-12px);pointer-events:none}

.hud-row{display:flex;align-items:center;gap:6px}

.time-chip,.floor-badge,.score-chip{
  display:flex;align-items:center;gap:4px;
  background:rgba(255,255,255,.94);
  padding:7px 10px;border-radius:999px;
  box-shadow:0 8px 18px -10px rgba(160,110,60,.7),inset 0 -2px 0 rgba(240,216,182,.75);
  white-space:nowrap;
  flex:0 0 auto;
}
.time-chip b{font-size:15px;font-weight:900;color:#4B3A2C;line-height:1;font-variant-numeric:tabular-nums}
.time-chip.low{background:linear-gradient(180deg,#FFB3C6,#FF7E9D);animation:timePulse .9s ease-in-out infinite}
.time-chip.low b{color:#fff;text-shadow:0 1px 2px rgba(160,20,60,.35)}
@keyframes timePulse{0%,100%{transform:scale(1)}50%{transform:scale(1.06)}}

.floor-badge{margin:0 auto}
.floor-badge b{font-size:18px;font-weight:900;color:var(--orange-d);line-height:1;transition:transform .2s}
.floor-badge b.pop{transform:scale(1.3)}
.fb-label{font-size:11px;color:var(--sub);font-weight:800}

.score-chip b{font-size:15px;font-weight:900;color:#B4771A;line-height:1;font-variant-numeric:tabular-nums}
.score-chip.bump{animation:coinBump .42s cubic-bezier(.34,1.6,.64,1)}
@keyframes coinBump{0%{transform:scale(1)}45%{transform:scale(1.14)}100%{transform:scale(1)}}

.chip-ico{font-size:12px;line-height:1}

.icon-btn{
  width:32px;height:32px;flex:0 0 auto;border-radius:50%;
  display:grid;place-items:center;font-size:14px;
  background:rgba(255,255,255,.94);
  box-shadow:0 8px 18px -10px rgba(160,110,60,.7),inset 0 -2px 0 rgba(240,216,182,.75);
  transition:transform .15s;
}
.icon-btn:active{transform:scale(.9)}
.icon-btn.stop{font-size:12px;color:var(--pink-d)}

.time-bar{
  margin-top:8px;height:7px;border-radius:999px;
  background:rgba(255,255,255,.78);
  box-shadow:inset 0 1px 2px rgba(160,110,60,.18);
  overflow:hidden;
}
.time-fill{
  height:100%;width:100%;border-radius:999px;
  background:linear-gradient(90deg,#8FE3C4,#45C9A0);
  transition:width .18s linear, background .3s;
}
.time-fill.low{background:linear-gradient(90deg,#FFB0C2,#FF6E8F)}

/* ===================== 飘字 ===================== */
.time-gain{
  position:absolute;top:calc(env(safe-area-inset-top,0px) + 62px);left:18px;
  font-size:14px;font-weight:900;color:var(--mint-d);
  text-shadow:0 2px 0 #fff;
  opacity:0;z-index:6;pointer-events:none;
}
.time-gain.minus{color:#E25A85}
.time-gain.show{animation:gainUp 1s ease-out}
@keyframes gainUp{
  0%{opacity:0;transform:translateY(6px) scale(.8)}
  25%{opacity:1;transform:translateY(-2px) scale(1.1)}
  70%{opacity:1;transform:translateY(-12px) scale(1)}
  100%{opacity:0;transform:translateY(-20px) scale(.95)}
}

.score-float{
  position:absolute;left:50%;top:42%;
  transform:translate(-50%,0);
  font-size:20px;font-weight:900;color:var(--orange-d);
  text-shadow:0 2px 0 #fff,0 8px 16px rgba(224,127,28,.35);
  opacity:0;z-index:6;pointer-events:none;white-space:nowrap;
}
.score-float i{font-size:13px;font-style:normal;color:#B4771A}
.score-float.show{animation:scoreUp 1s ease-out}
@keyframes scoreUp{
  0%{opacity:0;transform:translate(-50%,12px) scale(.7)}
  28%{opacity:1;transform:translate(-50%,-8px) scale(1.14)}
  70%{opacity:1;transform:translate(-50%,-30px) scale(1)}
  100%{opacity:0;transform:translate(-50%,-56px) scale(.95)}
}

.combo-badge{
  position:absolute;top:calc(env(safe-area-inset-top,0px) + 76px);left:50%;
  transform:translate(-50%,-16px) scale(.85);
  padding:6px 15px;border-radius:999px;
  background:linear-gradient(135deg,#FFB65C,#FF8A3D);
  color:#fff;font-size:12px;font-weight:800;white-space:nowrap;
  box-shadow:0 10px 22px -12px rgba(224,127,28,.95);
  text-shadow:0 1px 2px rgba(160,90,20,.35);
  opacity:0;pointer-events:none;z-index:6;
  transition:opacity .25s, transform .3s cubic-bezier(.34,1.5,.64,1);
}
.combo-badge.show{opacity:1;transform:translate(-50%,0) scale(1)}
.combo-badge b{font-size:14px}

/* ===================== 答题面板 ===================== */
.quiz-panel{
  position:absolute;left:50%;bottom:calc(env(safe-area-inset-bottom,0px) + 14px);
  transform:translateX(-50%);
  width:min(470px,calc(100% - 20px));
  padding:14px 15px 15px;
  border-radius:var(--r-lg);
  background:rgba(255,253,247,.95);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  box-shadow:var(--shadow),inset 0 0 0 3px #fff;
  z-index:5;
  transition:opacity .3s ease, transform .3s cubic-bezier(.34,1.3,.64,1);
}
.quiz-panel.hidden{opacity:0;transform:translate(-50%,26px);pointer-events:none}
.quiz-panel.pop{animation:panelPop .38s cubic-bezier(.34,1.5,.64,1)}
@keyframes panelPop{0%{transform:translate(-50%,10px) scale(.94);opacity:.5}100%{transform:translate(-50%,0) scale(1);opacity:1}}

.quiz-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:6px}
.quiz-tag{
  font-size:11px;font-weight:800;color:#C4762A;
  background:#FFF0D8;padding:3px 10px;border-radius:999px;
  white-space:nowrap;
}
.quiz-streak{font-size:11px;font-weight:800;color:var(--mint-d);white-space:nowrap}

.quiz-q{
  text-align:center;font-size:clamp(30px,9vw,42px);font-weight:900;
  letter-spacing:1px;line-height:1.25;
  padding:2px 0 12px;color:var(--ink);
}
.quiz-q .q-num{color:var(--orange-d)}
.quiz-q .q-op{color:var(--violet-d)}

.options{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.opt{
  position:relative;height:58px;border-radius:var(--r-md);
  font-size:clamp(22px,6.4vw,28px);font-weight:900;color:#6B4A2A;
  background:linear-gradient(180deg,#FFF8EC,#FFEBD2);
  box-shadow:0 4px 0 #EFD6B3,0 12px 20px -14px rgba(160,110,60,.9);
  transition:transform .12s ease, box-shadow .12s ease, background .18s, color .18s;
}
.opt:active:not(.locked){transform:translateY(3px);box-shadow:0 1px 0 #EFD6B3}
.opt.correct{
  background:linear-gradient(180deg,#8CE9C3,#4FD3A4);color:#fff;
  box-shadow:0 4px 0 #2C9E79,0 12px 22px -12px rgba(44,158,121,.9);
  animation:optPop .4s cubic-bezier(.34,1.6,.64,1);
}
.opt.wrong{
  background:linear-gradient(180deg,#FFC4D2,#FF93AF);color:#fff;
  box-shadow:0 4px 0 #DB6285;
  animation:shake .4s;
}
.opt.dim{opacity:.42;filter:saturate(.6)}
.opt:disabled{cursor:default}
@keyframes optPop{0%{transform:scale(1)}45%{transform:scale(1.09)}100%{transform:scale(1)}}
@keyframes shake{
  0%,100%{transform:translateX(0)}20%{transform:translateX(-7px)}
  40%{transform:translateX(7px)}60%{transform:translateX(-4px)}80%{transform:translateX(4px)}
}

.quiz-tip{
  height:0;overflow:hidden;text-align:center;
  font-size:13px;font-weight:800;color:var(--orange-d);
  transition:height .2s ease, padding .2s ease;
}
.quiz-tip.show{height:28px;padding-top:8px}

/* ===================== 遮罩 / 弹层 ===================== */
.overlay{
  position:absolute;inset:0;z-index:20;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:22px;
  background:linear-gradient(180deg,rgba(255,251,243,.24) 0%,rgba(255,247,232,.58) 44%,rgba(255,240,222,.72) 100%);
  opacity:0;visibility:hidden;transform:scale(1.03);
  transition:opacity .32s ease, transform .32s ease, visibility .32s;
}
.overlay.show{opacity:1;visibility:visible;transform:scale(1)}

/* 开始页 */
.start-settings{
  position:absolute;top:calc(env(safe-area-inset-top,0px) + 14px);right:14px;
  width:40px;height:40px;border-radius:50%;font-size:17px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.88);
  box-shadow:0 6px 16px -8px rgba(160,110,60,.7),inset 0 -2px 0 rgba(240,216,182,.7);
  transition:transform .15s;
}
.start-settings:active{transform:scale(.9)}
.title-wrap{position:relative;text-align:center}
.title-wrap::before{
  content:"";position:absolute;inset:-34px -26px -18px;z-index:-1;
  background:radial-gradient(closest-side,rgba(255,252,246,.95),rgba(255,252,246,.72) 52%,rgba(255,252,246,0));
}
.title-emoji{
  font-size:52px;line-height:1;margin-bottom:4px;
  animation:floaty 2.6s ease-in-out infinite;
  filter:drop-shadow(0 10px 14px rgba(224,127,28,.25));
}
@keyframes floaty{0%,100%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-9px) rotate(3deg)}}
.title{
  font-size:clamp(28px,8vw,38px);font-weight:900;letter-spacing:2px;
  color:#5A3F27;
  text-shadow:0 3px 0 #fff,0 6px 14px rgba(224,127,28,.18);
}
.subtitle{margin:6px 0 0;font-size:13px;color:var(--sub);font-weight:700}

/* 玩家名称输入 */
.name-row{
  display:flex;align-items:center;gap:8px;
  width:min(430px,100%);
  padding:4px 8px 4px 14px;border-radius:999px;
  background:rgba(255,255,255,.92);
  box-shadow:0 2px 0 #F2E4D1,0 12px 22px -18px rgba(160,110,60,.9);
}
.name-ico{font-size:16px;line-height:1}
.name-input{
  flex:1;min-width:0;height:34px;border:0;background:none;outline:none;
  font-size:15px;font-weight:900;color:var(--ink);letter-spacing:.5px;
}
.name-input::placeholder{color:#C4B29C;font-weight:700;letter-spacing:0}
.name-input.full{
  width:100%;height:46px;padding:0 14px;border-radius:var(--r-sm);
  background:#fff;box-shadow:0 2px 0 #F2E4D1;font-size:15px;
}

.pick-block{width:min(430px,100%);text-align:center}
.pick-label{font-size:12px;font-weight:800;color:var(--sub);margin-bottom:8px;letter-spacing:1px}
.chip-row{display:flex;flex-wrap:wrap;gap:7px;justify-content:center}
.chip{
  padding:8px 13px;border-radius:999px;font-size:12.5px;font-weight:800;
  color:#7A5A3A;background:#fff;
  box-shadow:0 2px 0 #EFDCC2,0 10px 18px -14px rgba(160,110,60,.9);
  transition:all .18s;
}
.chip.active{
  color:#fff;background:linear-gradient(135deg,#FFB65C,#FF8A3D);
  box-shadow:0 3px 0 #D97A24,0 12px 22px -12px rgba(224,127,28,.9);
  transform:translateY(-1px);
}
.chip:active{transform:scale(.96)}

.btn-primary{
  width:min(430px,100%);height:54px;border-radius:999px;flex:0 0 auto;
  font-size:18px;font-weight:900;color:#fff;letter-spacing:2px;
  background:linear-gradient(180deg,#FFB25E,#FF8A3D);
  box-shadow:0 5px 0 #D97A24,0 16px 28px -14px rgba(224,127,28,.95);
  transition:transform .12s, box-shadow .12s;
}
.btn-primary:active{transform:translateY(4px);box-shadow:0 1px 0 #D97A24}
.btn-ghost{
  font-size:13px;font-weight:800;color:var(--sub);
  padding:9px 18px;border-radius:999px;
  background:rgba(255,255,255,.75);
}
.btn-danger{
  width:100%;height:42px;border-radius:999px;margin-top:10px;
  font-size:12.5px;font-weight:800;color:#C2506F;
  background:#FFF0F4;box-shadow:0 2px 0 #F6DCE4;
  transition:all .18s;
}
.btn-danger.armed{background:linear-gradient(180deg,#FF9DB5,#F26C90);color:#fff;box-shadow:0 3px 0 #C2506F}
.btn-danger:disabled{opacity:.45}

.start-meta{
  font-size:12px;font-weight:800;color:#A98A62;
  background:rgba(255,255,255,.72);padding:6px 14px;border-radius:999px;
}
.start-best{
  font-size:12px;font-weight:800;color:#B4771A;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.86);
  box-shadow:0 2px 0 #F2E4D1;
}
.credit{font-size:11px;color:#BDAA93;font-weight:700;letter-spacing:1px}

/* 暂停页 */
.pause-overlay{
  background:linear-gradient(180deg,rgba(255,250,242,.88),rgba(255,240,222,.92));
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.pause-card{
  width:min(340px,100%);padding:26px 20px 22px;border-radius:30px;
  background:var(--cream);box-shadow:var(--shadow),inset 0 0 0 3px #fff;
  display:flex;flex-direction:column;gap:12px;align-items:center;text-align:center;
}
.pause-emoji{font-size:40px;line-height:1;animation:floaty 2.6s ease-in-out infinite}
.pause-card h2{font-size:21px;font-weight:900;color:#5A3F27}
.pause-sub{margin:0;font-size:12px;font-weight:700;color:var(--sub);line-height:1.5}
.pause-card .btn-primary{height:50px;font-size:17px;width:100%}

/* 设置面板 / 排行榜面板 */
.sheet{
  width:min(470px,100%);max-height:calc(100% - 24px);overflow-y:auto;
  padding:20px 18px 22px;border-radius:30px;
  background:var(--cream);
  box-shadow:var(--shadow),inset 0 0 0 3px #fff;
  display:flex;flex-direction:column;gap:2px;
}
.sheet-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.sheet-head h2{font-size:19px;font-weight:900}
.close-btn{
  width:34px;height:34px;border-radius:50%;font-size:15px;color:var(--sub);
  background:#FFF3E2;display:grid;place-items:center;
}
.setting-group{margin-bottom:18px}
.setting-title{font-size:12px;font-weight:800;color:var(--sub);letter-spacing:1px;margin-bottom:9px}
.diff-list{display:grid;gap:8px}
.diff-item{
  display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  padding:10px 12px;border-radius:var(--r-sm);
  background:#fff;box-shadow:0 2px 0 #F2E4D1;
  transition:all .18s;
}
.diff-item .di-emoji{font-size:20px}
.diff-item .di-body{flex:1;min-width:0}
.diff-item .di-name{display:block;font-size:14px;font-weight:900;color:#5A3F27;line-height:1.3}
.diff-item .di-desc{display:block;font-size:11px;color:var(--sub);font-weight:600;margin-top:2px;line-height:1.3}
.diff-item .di-check{
  width:20px;height:20px;flex:0 0 auto;border-radius:50%;border:2px solid #E7D6BF;
  display:grid;place-items:center;font-size:11px;color:#fff;
  transition:all .18s;
}
.diff-item.active{
  background:linear-gradient(135deg,#FFF3DE,#FFE7C3);
  box-shadow:0 2px 0 #F0CF9E,0 10px 20px -16px rgba(224,127,28,.9);
}
.diff-item.active .di-check{background:var(--mint);border-color:var(--mint)}
.diff-item.active .di-check::after{content:"✓"}

.seg{display:flex;gap:8px}
.seg-btn{
  flex:1;height:42px;border-radius:var(--r-sm);font-size:14px;font-weight:800;color:#7A5A3A;
  background:#fff;box-shadow:0 2px 0 #F2E4D1;transition:all .18s;
}
.seg-btn.active{
  color:#fff;background:linear-gradient(135deg,#FFB65C,#FF8A3D);
  box-shadow:0 3px 0 #D97A24;
}
.hint-line{font-size:11px;color:var(--orange-d);font-weight:700;margin-top:7px;min-height:14px}
.sheet .btn-primary{margin-top:4px}

/* ===================== 结算页 ===================== */
.win-card{
  width:min(430px,100%);padding:22px 18px 18px;border-radius:32px;text-align:center;
  background:var(--cream);box-shadow:var(--shadow),inset 0 0 0 3px #fff;
  display:flex;flex-direction:column;gap:10px;align-items:center;
  max-height:calc(100% - 20px);overflow-y:auto;
}
.win-emoji{font-size:40px;line-height:1;animation:popStar .6s cubic-bezier(.34,1.6,.64,1)}
@keyframes popStar{0%{transform:scale(.4);opacity:0}100%{transform:scale(1);opacity:1}}
.win-title{font-size:21px;font-weight:900;color:#5A3F27}
.win-player{
  font-size:12px;font-weight:900;color:#A98A62;
  background:#FFF4E4;padding:4px 14px;border-radius:999px;
  max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.win-score{display:flex;align-items:baseline;gap:3px;color:var(--orange-d)}
.win-score b{font-size:40px;font-weight:900;line-height:1;font-variant-numeric:tabular-nums}
.win-score span{font-size:14px;font-weight:800}

.win-stats{display:flex;gap:8px;width:100%}
.stat{
  flex:1;padding:10px 4px;border-radius:var(--r-sm);
  background:#FFF4E4;display:flex;flex-direction:column;gap:3px;
}
.stat-num{font-size:19px;font-weight:900;color:var(--orange-d);font-variant-numeric:tabular-nums}
.stat-label{font-size:11px;font-weight:700;color:var(--sub)}

.new-record{
  font-size:12px;font-weight:800;color:var(--mint-d);
  background:#E9FBF3;padding:6px 14px;border-radius:999px;
  display:none;
}
.new-record.show{display:block;animation:popStar .5s cubic-bezier(.34,1.6,.64,1)}

.mini-board{width:100%;display:grid;gap:5px}
.rec-empty{font-size:12px;color:var(--sub);text-align:center;padding:14px 0;font-weight:700}

.win-links{display:flex;gap:8px;justify-content:center;width:100%}
.win-card .btn-primary{height:50px;font-size:17px}

/* ===================== 成绩行 ===================== */
.rec-row{
  display:flex;align-items:center;gap:10px;width:100%;
  padding:9px 11px;border-radius:14px;background:#fff;
  box-shadow:0 2px 0 #F2E4D1;
}
.rec-row.cur{background:linear-gradient(135deg,#FFF3DE,#FFE7C3);box-shadow:0 2px 0 #F0CF9E}
.rec-rank{
  width:22px;height:22px;flex:0 0 auto;border-radius:50%;
  display:grid;place-items:center;font-size:11px;font-weight:900;
  background:#F3E7D5;color:#9C8770;
}
.rec-row.r1 .rec-rank{background:linear-gradient(135deg,#FFD874,#FFB524);color:#7A5200}
.rec-row.r2 .rec-rank{background:linear-gradient(135deg,#E4E8EF,#C6CEDA);color:#5A6474}
.rec-row.r3 .rec-rank{background:linear-gradient(135deg,#F5CFA8,#E0A46B);color:#6B4218}

.rec-body{flex:1;min-width:0}
.rec-top{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.rec-name{
  font-size:13px;font-weight:900;color:#5A3F27;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.rec-score{
  font-size:16px;font-weight:900;color:var(--orange-d);
  font-variant-numeric:tabular-nums;flex:0 0 auto;line-height:1.1;
}
.rec-score i{font-size:10px;font-style:normal;font-weight:800;color:var(--sub);margin-left:1px}
.rec-sub{
  display:flex;align-items:center;gap:10px;margin-top:3px;
  font-size:11px;font-weight:700;color:var(--sub);
}
.rec-sub .rec-date{margin-left:auto;color:#BDAA93}

.record-list{display:grid;gap:6px;margin-bottom:14px}
.rec-total{
  font-size:11px;font-weight:800;color:#B4771A;
  background:#FFF4E4;padding:7px 12px;border-radius:999px;
  margin-bottom:12px;text-align:center;
}
#recordsOverlay{
  background:linear-gradient(180deg,rgba(255,249,240,.94),rgba(255,243,226,.96));
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}

/* 加载失败 */
.fatal{
  position:absolute;inset:0;z-index:99;display:none;
  align-items:center;justify-content:center;
  padding:30px;text-align:center;font-size:15px;font-weight:800;color:var(--orange-d);
  background:var(--cream);
}
.fatal.show{display:flex}

/* 矮屏紧凑布局 */
@media (max-height:720px){
  .quiz-panel{padding:11px 13px 12px;border-radius:24px}
  .quiz-q{font-size:clamp(25px,7.4vw,32px);padding-bottom:9px}
  .options{gap:8px}
  .opt{height:48px;font-size:clamp(19px,5.6vw,24px);border-radius:16px}
  .quiz-tip.show{height:22px;padding-top:6px;font-size:12px}
  .title-emoji{font-size:42px}
  .win-score b{font-size:34px}
  .win-emoji{font-size:34px}
  .win-card{padding:16px 14px 14px;gap:8px}
  .stat{padding:8px 4px}
  .stat-num{font-size:17px}
  .pause-emoji{font-size:32px}
  .pause-card{padding:20px 18px 18px;gap:10px}
}

/* 横屏 / 极矮屏适配 */
@media (max-height:560px){
  .quiz-panel{padding:9px 11px 10px}
  .quiz-q{font-size:24px;padding-bottom:6px}
  .opt{height:42px;font-size:20px}
  .title-emoji{font-size:36px;margin-bottom:0}
  .subtitle,.credit{display:none}
  .combo-badge{display:none}
  .overlay{gap:8px;padding:12px}
  .win-emoji{display:none}
  .mini-board{display:none}
  .name-row{padding:2px 6px 2px 12px}
  .name-input{height:30px;font-size:14px}
}

/* 宽屏：HUD 收拢居中，不要贴到屏幕两端 */
@media (min-width:760px){
  .hud-row,.time-bar{width:min(560px,100%);margin-left:auto;margin-right:auto}
  .quiz-panel{width:min(440px,calc(100% - 20px))}
  .opt{height:52px;font-size:24px}
}

/* 窄屏微调 */
@media (max-width:370px){
  .time-chip,.floor-badge,.score-chip{padding:6px 8px}
  .time-chip b,.score-chip b{font-size:14px}
  .floor-badge b{font-size:17px}
  .icon-btn{width:30px;height:30px;font-size:13px}
  .hud-row{gap:4px}
  .rec-sub{gap:7px}
}