/* ============================================================
   课堂破冰 · 设计令牌
   ============================================================ */
:root{
  --paper:#FBF3E7;
  --paper-2:#F5E9D7;
  --paper-3:#EFDFC9;
  --ink:#141827;
  --ink-soft:#3B4053;
  --muted:#8A8477;
  --line:rgba(20,24,39,.13);
  --line-strong:rgba(20,24,39,.26);
  --accent:#EF5A28;
  --accent-deep:#B93A12;
  --accent-soft:#FBD8C8;
  --gold:#E0A100;
  --ok:#0F7A57;
  --ok-soft:#D8EEE5;
  --bad:#C43D3D;
  --bad-soft:#F6DCDC;
  --sans:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC","SimSun",serif;
  --ease:cubic-bezier(.22,.61,.36,1);
  --shadow:0 30px 80px -40px rgba(20,24,39,.55);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background-image:radial-gradient(rgba(20,24,39,.035) 1px,transparent 1px);
  background-size:4px 4px;
}
body.lock{overflow:hidden}
h1,h2,h3,h4,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
button,input,textarea,select{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}
input[type=number]{appearance:textfield;-moz-appearance:textfield}
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
::selection{background:var(--accent);color:var(--paper)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{width:min(1280px,90vw);margin-inline:auto}

/* ============================================================
   通用组件
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:999px;
  font-weight:700;font-size:15px;letter-spacing:.02em;
  border:1px solid transparent;
  transition:transform .2s var(--ease),background .2s,color .2s,border-color .2s,box-shadow .2s;
  white-space:nowrap;
}
.btn:active{transform:scale(.97)}
.btn-accent{background:var(--accent);color:#FFF7EE;box-shadow:0 12px 28px -16px rgba(239,90,40,.9)}
.btn-accent:hover{background:#D94C1F}
.btn-ink{background:var(--ink);color:var(--paper)}
.btn-ink:hover{background:#2A3048}
.btn-ghost{border-color:rgba(251,243,231,.35);color:var(--paper)}
.btn-ghost:hover{background:rgba(251,243,231,.08);border-color:rgba(251,243,231,.7)}
.btn-line{border-color:var(--line-strong);color:var(--ink)}
.btn-line:hover{background:rgba(20,24,39,.05)}
.btn-sm{padding:9px 16px;font-size:13px}
.btn-lg{padding:16px 30px;font-size:16px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}

.kicker{
  font-family:var(--serif);font-style:italic;font-size:14px;
  letter-spacing:.06em;color:var(--accent);
}
.eyebrow{
  font-family:var(--serif);font-style:italic;
  font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(251,243,231,.62);
}
.eyebrow span{color:var(--accent)}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;overflow:hidden;
  min-height:100svh;
  display:flex;align-items:center;
  padding:110px 0 130px;
  background:var(--ink);
  color:var(--paper);
}
.hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:rgba(251,243,231,.12);
}
.hero-inner{position:relative;z-index:3}
.hero-inner h1{
  margin-top:26px;
  font-size:clamp(42px,7.2vw,104px);
  line-height:1.02;font-weight:800;letter-spacing:-.03em;
  max-width:14ch;
}
.hero-inner h1 br{display:block}
.lede{
  margin-top:28px;max-width:46ch;
  font-size:clamp(15px,1.4vw,19px);line-height:1.85;
  color:rgba(251,243,231,.68);
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}
.hero-meta{
  margin-top:22px;font-size:12px;letter-spacing:.14em;
  color:rgba(251,243,231,.38);
}
.hero-art{
  position:absolute;right:2vw;top:50%;transform:translateY(-50%);
  width:48vw;height:48vw;min-width:420px;min-height:420px;
  z-index:1;pointer-events:none;
}
.hero-art-num{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:flex-end;
  font-size:clamp(220px,34vw,520px);line-height:.72;font-weight:800;letter-spacing:-.08em;
  color:transparent;-webkit-text-stroke:1.5px rgba(251,243,231,.24);
  user-select:none;
}
.hero-art-ring{
  position:absolute;left:-6%;bottom:6%;
  width:54%;aspect-ratio:1;border-radius:50%;
  border:1px solid rgba(239,90,40,.55);
}
.hero-art-ring::after{
  content:"";position:absolute;inset:14%;
  border-radius:50%;border:1px dashed rgba(251,243,231,.22);
}
.hero-art-label{
  position:absolute;right:12%;bottom:10%;
  font-family:var(--serif);font-style:italic;font-size:12px;
  letter-spacing:.26em;color:rgba(251,243,231,.4);
}
.hero-marquee{
  position:absolute;left:0;right:0;bottom:34px;z-index:3;
  display:flex;align-items:center;gap:26px;
  padding-inline:5vw;
  font-size:12px;letter-spacing:.24em;color:rgba(251,243,231,.42);
  white-space:nowrap;overflow:hidden;
}
.hero-marquee i{width:5px;height:5px;border-radius:50%;background:var(--accent);opacity:.8;flex:none}

/* hero 入场 */
@keyframes riseIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.anim-1,.anim-2,.anim-3,.anim-4,.anim-5{animation:riseIn .9s var(--ease) both}
.anim-1{animation-delay:.05s}
.anim-2{animation-delay:.16s}
.anim-3{animation-delay:.28s}
.anim-4{animation-delay:.4s}
.anim-5{animation-delay:.52s}

/* ============================================================
   使用贴士
   ============================================================ */
.how{padding:110px 0 90px;background:var(--paper)}
.sec-head{margin-bottom:52px}
.sec-head h2{
  margin-top:12px;
  font-size:clamp(30px,4vw,54px);line-height:1.12;letter-spacing:-.02em;font-weight:800;
}
.sec-sub{
  margin-top:16px;max-width:66ch;font-size:15px;line-height:1.8;color:var(--muted);
}
.tips{
  display:grid;grid-template-columns:repeat(3,1fr);gap:44px;
  border-top:1px solid var(--line-strong);padding-top:26px;
}
.tips li{position:relative;padding-top:24px}
.tip-no{
  font-family:var(--serif);font-style:italic;font-size:13px;color:var(--accent);letter-spacing:.08em;
}
.tips h3{margin-top:14px;font-size:21px;font-weight:700;letter-spacing:-.01em}
.tips p{margin-top:12px;font-size:14px;line-height:1.85;color:var(--ink-soft)}
.materials{
  margin-top:64px;padding-top:26px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:220px 1fr;gap:30px;align-items:start;
}
.materials-k{font-size:13px;letter-spacing:.2em;color:var(--muted)}
.materials ul{
  display:flex;flex-wrap:wrap;gap:10px 28px;
}
.materials li{
  font-size:14px;color:var(--ink-soft);
  padding-left:14px;position:relative;
}
.materials li::before{
  content:"";position:absolute;left:0;top:.62em;width:5px;height:5px;
  border-radius:50%;background:var(--accent);opacity:.7;
}

/* ============================================================
   筛选条
   ============================================================ */
.library{padding-bottom:120px}
.filter-bar{
  position:sticky;top:0;z-index:20;
  background:rgba(251,243,231,.92);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.filter-inner{
  display:flex;align-items:center;gap:22px;
  padding:14px 0;flex-wrap:wrap;
}
.filter-label{font-size:12px;letter-spacing:.18em;color:var(--muted);flex:none}
.filter-chips{display:flex;gap:7px;flex-wrap:wrap;flex:1}
.filter-chip{
  padding:8px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--ink-soft);border:1px solid transparent;
  transition:all .2s var(--ease);
}
.filter-chip:hover{background:rgba(20,24,39,.05)}
.filter-chip[aria-selected="true"]{background:var(--ink);color:var(--paper)}
.filter-count{font-size:12px;color:var(--muted);flex:none;letter-spacing:.06em}

.library-head{padding-top:76px}

/* ============================================================
   分类与游戏行
   ============================================================ */
.cat{margin-bottom:78px;scroll-margin-top:88px}
.cat[hidden]{display:none}
.cat-head{
  display:grid;grid-template-columns:120px 1fr 340px;gap:24px;align-items:end;
  padding-bottom:18px;border-bottom:1px solid var(--line-strong);
}
.cat-range{
  font-family:var(--serif);font-style:italic;font-size:13px;
  letter-spacing:.1em;color:var(--muted);
}
.cat-head h2{
  font-size:clamp(24px,2.8vw,36px);font-weight:800;letter-spacing:-.01em;line-height:1.1;
}
.cat-en{
  margin-top:6px;font-family:var(--serif);font-style:italic;font-size:11px;
  letter-spacing:.24em;color:var(--muted);
}
.cat-blurb{font-size:13px;line-height:1.8;color:var(--muted);justify-self:end;max-width:30ch}

.game-list{margin-top:6px}
.game-row{border-bottom:1px solid var(--line)}
.row-btn{
  display:grid;
  grid-template-columns:64px minmax(0,1fr) 34px;
  align-items:center;gap:18px;
  width:100%;text-align:left;
  padding:24px 10px 24px 0;
  position:relative;
  transition:padding .35s var(--ease),background .3s;
}
.row-btn::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:0;background:var(--accent);
  transition:height .35s var(--ease);
}
.row-btn:hover{padding-left:18px;background:rgba(239,90,40,.035)}
.row-btn:hover::before{height:60%}
.row-no{
  font-family:var(--serif);font-style:italic;font-size:15px;color:var(--muted);
  letter-spacing:.04em;
}
.row-main{min-width:0}
.row-name{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  font-size:clamp(18px,1.8vw,23px);font-weight:700;letter-spacing:-.01em;
  transition:transform .35s var(--ease),color .25s;
}
.row-btn:hover .row-name{transform:translateX(4px);color:var(--accent-deep)}
.row-desc{
  display:block;margin-top:7px;
  font-size:13.5px;line-height:1.6;color:var(--muted);
}
.tier{
  font-size:10.5px;font-weight:700;letter-spacing:.1em;
  padding:4px 8px;border-radius:4px;white-space:nowrap;
}
.tier-play{background:var(--accent);color:#FFF7EE}
.tier-tool{background:rgba(224,161,0,.16);color:#8A6200}
.tier-card{background:rgba(20,24,39,.07);color:var(--muted)}
.row-go{
  font-size:18px;color:var(--muted);justify-self:end;
  transition:transform .3s var(--ease),color .3s;
}
.row-btn:hover .row-go{transform:translateX(5px);color:var(--accent)}

/* ============================================================
   页脚
   ============================================================ */
.foot{background:var(--ink);color:var(--paper);padding:96px 0 54px}
.foot-line{
  font-size:clamp(34px,5vw,68px);font-weight:800;line-height:1.18;letter-spacing:-.03em;
}
.foot-line::after{
  content:"";display:block;width:76px;height:3px;background:var(--accent);margin-top:34px;
}
.foot-row{
  margin-top:64px;padding-top:22px;border-top:1px solid rgba(251,243,231,.16);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.06em;color:rgba(251,243,231,.5);
}

/* ============================================================
   游戏面板
   ============================================================ */
.sheet{
  position:fixed;inset:0;z-index:100;
  display:flex;align-items:center;justify-content:center;
  padding:24px;
  opacity:0;visibility:hidden;
  transition:opacity .3s var(--ease),visibility .3s;
}
.sheet.open{opacity:1;visibility:visible}
.sheet-backdrop{
  position:absolute;inset:0;background:rgba(20,24,39,.62);
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.sheet-panel{
  position:relative;z-index:2;
  width:min(1240px,100%);height:min(92svh,940px);
  background:var(--paper);border-radius:20px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;overflow:hidden;
  transform:translateY(16px) scale(.985);opacity:0;
  transition:transform .4s var(--ease),opacity .3s;
}
.sheet.open .sheet-panel{transform:none;opacity:1}
.sheet-panel:focus{outline:none}
.sheet-head{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 30px;border-bottom:1px solid var(--line);flex:none;
}
.sheet-kicker{font-size:11px;letter-spacing:.2em;color:var(--accent);font-weight:700}
.sheet-head h2{
  margin-top:5px;font-size:24px;font-weight:800;letter-spacing:-.01em;
}
.sheet-close{
  display:flex;align-items:center;gap:7px;
  padding:9px 15px;border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--ink-soft);
  transition:background .2s,border-color .2s;
}
.sheet-close svg{width:14px;height:14px;stroke:currentColor;stroke-width:1.8;fill:none}
.sheet-close:hover{background:var(--paper-2);border-color:var(--line-strong)}
.sheet-grid{display:grid;grid-template-columns:minmax(300px,356px) 1fr;flex:1;min-height:0}

.sheet-rules{
  overflow:auto;padding:30px;background:var(--paper-2);
  border-right:1px solid var(--line);
}
.rules-block + .rules-block{margin-top:34px;padding-top:28px;border-top:1px solid var(--line)}
.rules-block h3{
  font-size:11px;letter-spacing:.2em;color:var(--muted);margin-bottom:16px;font-weight:700;
}
.rules-list{counter-reset:r;display:grid;gap:13px}
.rules-list li{
  counter-increment:r;position:relative;padding-left:26px;
  font-size:13.5px;line-height:1.78;color:var(--ink-soft);
}
.rules-list li::before{
  content:counter(r,decimal-leading-zero);
  position:absolute;left:0;top:2px;
  font-family:var(--serif);font-style:italic;font-size:11px;color:var(--accent);
}
.mats{font-size:13px;line-height:1.8;color:var(--ink-soft)}
.tips-list{display:grid;gap:10px;margin-top:14px}
.tips-list li{
  font-size:12.5px;line-height:1.7;color:var(--muted);
  padding-left:14px;position:relative;
}
.tips-list li::before{
  content:"";position:absolute;left:0;top:.6em;width:5px;height:5px;
  border-radius:50%;background:var(--line-strong);
}
.sheet-stage{
  overflow:auto;padding:30px 34px 26px;background:var(--paper);
  scroll-behavior:smooth;
}

/* ============================================================
   舞台通用组件
   ============================================================ */
.stage{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:20px}
.stage-top{
  display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between;
}
.hud{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:9px 14px;border:1px solid var(--line);border-radius:10px;
  background:rgba(255,255,255,.42);
}
.hud-k{font-size:11px;letter-spacing:.1em;color:var(--muted)}
.hud-v,.hud b{font-family:var(--serif);font-size:17px;font-weight:700;color:var(--ink)}
.hud b{font-size:19px}

.meter{height:5px;background:rgba(20,24,39,.1);border-radius:999px;overflow:hidden}
.meter i{display:block;height:100%;width:100%;background:var(--accent);border-radius:999px;transition:width .12s linear}

.big-box{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  min-height:210px;padding:34px 24px;border-radius:18px;
  background:var(--paper-2);border:1px solid var(--line);
  text-align:center;
}
.big-num{
  font-size:clamp(64px,9vw,116px);font-weight:800;line-height:.95;letter-spacing:-.04em;
  font-variant-numeric:tabular-nums;
}
.big-num.boom{color:var(--bad);animation:pop .45s var(--ease)}
.big-sub{font-size:13.5px;color:var(--muted);max-width:44ch;line-height:1.7}
.big-sub b{color:var(--ink);font-weight:700}

.btn-row{display:flex;gap:10px;flex-wrap:wrap}
.input-row{display:flex;gap:10px;flex-wrap:wrap}
.input-row .ipt{flex:1;min-width:140px}
.ipt,textarea.ipt{
  width:100%;padding:13px 16px;
  background:#FFFCF6;border:1px solid var(--line-strong);border-radius:10px;
  font-size:16px;transition:border-color .2s,box-shadow .2s;
}
.ipt:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(239,90,40,.13)}
.ipt::placeholder{color:#B3AC9E}

/* 语音输入按钮 */
.voice-wrap{position:relative;display:block;flex:1 1 140px;min-width:0}
.voice-wrap>.ipt{width:100%;padding-right:44px}
.voice-btn{
  position:absolute;right:6px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:rgba(20,24,39,.06);color:var(--muted);
  transition:background .2s,color .2s,box-shadow .2s;
}
.voice-btn svg{width:15px;height:15px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round}
.voice-btn:hover{background:var(--accent-soft);color:var(--accent-deep)}
.voice-btn.listening{background:var(--accent);color:#FFF;animation:voicePulse 1.4s ease-in-out infinite}
@keyframes voicePulse{
  0%,100%{box-shadow:0 0 0 0 rgba(239,90,40,.35)}
  50%{box-shadow:0 0 0 6px rgba(239,90,40,0)}
}

.stage-note{font-size:12.5px;line-height:1.8;color:var(--muted)}
.stage-note b{color:var(--ink-soft)}

.msg{font-size:13px;line-height:1.7;color:var(--ink-soft);min-height:1.4em}
.msg.ok{color:var(--ok);font-weight:600}
.msg.bad{color:var(--bad);font-weight:600}

.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 13px;border-radius:999px;
  background:rgba(20,24,39,.055);font-size:13px;color:var(--ink-soft);
  animation:chipIn .3s var(--ease);
}
.chip.ok{background:var(--ok-soft);color:var(--ok)}
.chip.bad{background:var(--bad-soft);color:var(--bad)}
.chip.miss{background:rgba(20,24,39,.045);color:var(--muted);text-decoration:line-through}
.chip .x{font-size:11px;opacity:.6}

.seg{display:flex;gap:6px;padding:5px;background:var(--paper-2);border-radius:12px;flex-wrap:wrap}
.seg button{
  flex:1;min-width:88px;padding:9px 14px;border-radius:8px;font-size:13px;font-weight:600;color:var(--ink-soft);
  transition:all .2s;
}
.seg button[aria-pressed="true"]{background:var(--paper);box-shadow:0 2px 8px rgba(20,24,39,.08);color:var(--ink)}

.result{
  padding:22px 24px;border-radius:14px;border:1px solid var(--line);
  background:var(--paper-2);display:grid;gap:10px;
}
.result.ok{background:var(--ok-soft);border-color:rgba(15,122,87,.24)}
.result.bad{background:var(--bad-soft);border-color:rgba(196,61,61,.24)}
.result h3{font-size:19px;font-weight:800}
.result p{font-size:13.5px;line-height:1.75;color:var(--ink-soft)}
.result .draw{font-size:15px;font-weight:700;color:var(--ink)}

.chain{display:flex;flex-wrap:wrap;gap:8px}
.chain li{
  padding:8px 13px;border-radius:8px;background:rgba(20,24,39,.05);
  font-size:14px;color:var(--ink-soft);animation:chipIn .3s var(--ease);
}
.chain li.head{background:var(--ink);color:var(--paper)}
.chain-scroll{max-height:172px;overflow:auto;padding-right:4px}

.chain-sentence{
  padding:22px 24px;border-radius:12px;
  background:var(--paper-2);border-left:3px solid var(--accent);
  font-size:clamp(18px,2.1vw,24px);line-height:1.9;font-weight:600;
  color:var(--ink);word-break:break-word;
}
.chain-sentence b{color:var(--accent-deep);font-size:1.12em}

.range-track{
  position:relative;height:14px;border-radius:999px;overflow:hidden;
  background:rgba(20,24,39,.08);
}
.range-track .band{
  position:absolute;top:0;bottom:0;border-radius:999px;background:var(--accent);opacity:.85;
  transition:left .35s var(--ease),width .35s var(--ease);
}
.range-track .pin{
  position:absolute;top:-3px;width:3px;height:20px;background:var(--ink);
  transition:left .35s var(--ease);
}
.range-labels{display:flex;justify-content:space-between;margin-top:-8px;font-size:11px;color:var(--muted);letter-spacing:.1em}

/* 数字炸弹：自定义范围 */
.bomb-range{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11.5px;color:var(--muted)}
.bomb-range-label{letter-spacing:.08em}
.bomb-range .ipt{width:96px;padding:8px 10px;font-size:14px;text-align:center}
.bomb-range-dash{color:var(--line-strong)}
.bomb-range .btn{flex:none}

.expand-list{display:grid;border-top:1px solid var(--line);max-height:236px;overflow:auto}
.expand-list li{
  display:flex;gap:14px;align-items:baseline;
  padding:11px 4px;border-bottom:1px solid var(--line);
  font-size:14px;color:var(--ink-soft);
}
.expand-list li.current{background:rgba(239,90,40,.05);color:var(--ink);font-weight:600}
.ex-idx{font-family:var(--serif);font-style:italic;font-size:11px;color:var(--muted);flex:none}
.ex-text{flex:1;line-height:1.7;word-break:break-word}
.ex-len{font-size:11px;color:var(--muted);flex:none}

.charline{display:flex;flex-wrap:wrap;gap:5px;justify-content:center;max-width:100%}
.charline span,.charline em{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.25;letter-spacing:.02em;
  padding:1px 4px;border-radius:6px;
}
.charline em{color:var(--accent-deep);background:var(--accent-soft);font-style:normal;animation:pop .4s var(--ease)}

.words3{display:flex;gap:10px;flex-wrap:wrap}
.word-pill{
  padding:13px 22px;border-radius:10px;background:var(--ink);color:var(--paper);
  font-size:clamp(17px,2vw,22px);font-weight:700;letter-spacing:.04em;
  animation:chipIn .3s var(--ease);
}

.vote-list{display:grid;gap:10px}
.vote-row{
  display:flex;gap:18px;align-items:center;justify-content:space-between;
  padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:#FFFCF6;
}
.vote-row p{font-size:14px;line-height:1.75;color:var(--ink-soft)}
.vote-actions{display:flex;align-items:center;gap:10px;flex:none}
.tag{font-size:11px;letter-spacing:.08em;color:var(--muted);white-space:nowrap}

.split{display:grid;grid-template-columns:1fr 1fr;gap:22px}

/* 笑掉大牙 */
.reels{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.reel{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#FFFCF6;
}
.reel-k{
  display:block;padding:8px 10px;background:rgba(20,24,39,.05);
  font-size:11px;letter-spacing:.16em;color:var(--muted);
}
.reel-v{
  display:flex;align-items:center;justify-content:center;
  min-height:88px;padding:12px 8px;text-align:center;
  font-size:16px;font-weight:700;line-height:1.35;
}
.reel.spinning .reel-v{color:var(--accent);opacity:.75}
.joke-sentence{
  min-height:96px;display:flex;align-items:center;justify-content:center;
  padding:22px 26px;border-radius:14px;background:var(--ink);color:var(--paper);
  font-size:clamp(19px,2.4vw,28px);font-weight:700;line-height:1.6;text-align:center;
}
.joke-sentence.empty{background:var(--paper-2);color:var(--muted);font-weight:400;font-size:14px;border:1px dashed var(--line-strong)}

/* 画板 */
.canvas-wrap{
  position:relative;border:1px solid var(--line-strong);border-radius:12px;overflow:hidden;
  background:#FFFDF7;
}
.canvas-wrap canvas{display:block;width:100%;height:clamp(260px,38vh,400px);touch-action:none;cursor:crosshair}
.draw-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.swatch{
  width:26px;height:26px;border-radius:50%;border:2px solid transparent;
  transition:transform .15s,border-color .15s;
}
.swatch[aria-pressed="true"]{border-color:var(--ink);transform:scale(1.08)}
.size-dot{display:inline-flex;align-items:center;justify-content:center;min-width:30px;height:30px;border-radius:50%;border:1px solid var(--line)}
.size-dot[aria-pressed="true"]{border-color:var(--ink);background:rgba(20,24,39,.06)}
.size-dot i{display:block;border-radius:50%;background:var(--ink)}

.word-card{
  display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  padding:16px 20px;border-radius:12px;border:1px dashed var(--line-strong);background:var(--paper-2);
}
.word-card .word{
  font-size:clamp(24px,3vw,36px);font-weight:800;letter-spacing:.08em;
  filter:blur(9px);transition:filter .3s;user-select:none;
}
.word-card.reveal .word{filter:none;color:var(--accent-deep)}
.word-card .word-tip{font-size:12px;color:var(--muted)}

/* 物品托盘 */
.tray{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.tray-item{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  aspect-ratio:1/.94;border-radius:10px;background:#FFFCF6;border:1px solid var(--line);
  transition:opacity .3s,transform .3s;
  animation:chipIn .35s var(--ease) both;
}
.tray-item svg{width:26px;height:26px;stroke:var(--ink-soft);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.tray-item span{font-size:11.5px;color:var(--ink-soft);letter-spacing:.03em}
.tray.covered .tray-item{opacity:.06;transform:scale(.94);filter:blur(4px)}

/* 青蛙 */
.quiz3{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.quiz3 label{display:grid;gap:7px;font-size:12px;letter-spacing:.12em;color:var(--muted)}
.quiz3 .ipt{text-align:center;font-size:22px;font-weight:700;font-family:var(--serif)}
.chant{
  padding:20px;border-radius:12px;background:var(--paper-2);border-left:3px solid var(--accent);
  font-size:16px;line-height:2;color:var(--ink-soft);
}
.chant b{color:var(--ink)}

/* 静态投影卡 */
.projection{
  border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#FFFCF6;
}
.projection-top{padding:30px 32px 24px;border-bottom:1px solid var(--line);background:var(--paper-2)}
.projection-top .kicker{font-size:12px}
.projection-top h3{font-size:clamp(32px,3.8vw,52px);font-weight:800;letter-spacing:-.02em;margin-top:8px}
.projection-body{padding:30px 32px 34px;display:grid;gap:20px}
.projection-body ol{counter-reset:p;display:grid;gap:16px}
.projection-body li{
  counter-increment:p;position:relative;padding-left:36px;
  font-size:16.5px;line-height:1.85;color:var(--ink-soft);
}
.projection-body li::before{
  content:counter(p,decimal-leading-zero);position:absolute;left:0;top:0;
  font-family:var(--serif);font-style:italic;font-size:13px;color:var(--accent);
}
.projection-mats{
  margin-top:4px;padding-top:16px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);line-height:1.8;
}
.notice{
  padding:16px 18px;border-radius:10px;background:rgba(224,161,0,.1);
  border:1px solid rgba(224,161,0,.28);font-size:13px;line-height:1.8;color:#7A5600;
}
.notice.ink{background:rgba(20,24,39,.05);border-color:var(--line);color:var(--muted)}

/* Toast */
.toast{
  position:fixed;left:50%;bottom:38px;transform:translate(-50%,14px);
  padding:11px 20px;border-radius:999px;background:var(--ink);color:var(--paper);
  font-size:13.5px;z-index:200;opacity:0;pointer-events:none;
  transition:opacity .25s,transform .25s var(--ease);
  box-shadow:0 16px 40px -18px rgba(20,24,39,.7);
}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* 彩屑 */
.confetti{
  position:absolute;top:-14px;width:7px;height:11px;border-radius:1px;
  pointer-events:none;animation:fall linear forwards;z-index:5;
}
@keyframes fall{
  0%{transform:translate3d(0,0,0) rotate(0deg);opacity:1}
  100%{transform:translate3d(var(--dx),95vh,0) rotate(var(--rot));opacity:0}
}
@keyframes shake{
  0%,100%{transform:translateX(0)}
  20%{transform:translateX(-7px)}
  40%{transform:translateX(6px)}
  60%{transform:translateX(-4px)}
  80%{transform:translateX(3px)}
}
.shake{animation:shake .38s ease-in-out}
@keyframes pop{0%{transform:scale(.86);opacity:.4}60%{transform:scale(1.06)}100%{transform:scale(1);opacity:1}}
@keyframes chipIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* 入场 reveal：默认可见，进入视口时播放动画 */
@keyframes riseIn{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
@keyframes rowIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.reveal.in{animation:riseIn .8s var(--ease) both}
.game-row.in{animation:rowIn .6s var(--ease) both;animation-delay:calc(var(--i,0)*45ms)}

/* 两真一假 */
.tf-rows{display:grid;gap:10px}
.tf-row{display:flex;align-items:center;gap:12px}
.tf-letter{
  flex:none;width:28px;height:28px;border-radius:7px;
  display:flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--paper);
  font-family:var(--serif);font-size:13px;font-style:italic;font-weight:700;
}
.tf-row .ipt{flex:1}
.tf-lie{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.tf-lie>span{flex:none;font-size:12.5px;color:var(--muted)}
.tf-lie-seg{flex:none;width:264px;min-width:0}
.tf-lie-seg button{flex:1;min-width:0;background:rgba(255,255,255,.55);color:var(--ink-soft)}
.tf-lie-seg button[aria-pressed="true"]{background:var(--ink);color:var(--paper);box-shadow:none}
.tf-player{font-size:13px;letter-spacing:.04em;color:var(--muted)}
.tf-cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.tf-card{
  display:flex;flex-direction:column;gap:12px;min-height:168px;
  padding:16px;border:1px solid var(--line);border-radius:12px;background:#FFFCF6;
  transition:background .3s,border-color .3s;
}
.tf-card-letter{font-family:var(--serif);font-style:italic;font-size:13px;color:var(--muted)}
.tf-card-text{flex:1;font-size:15px;line-height:1.7;color:var(--ink-soft);word-break:break-word}
.tf-card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.tf-vote-count{font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.tf-card.lie{border-color:rgba(196,61,61,.45);background:var(--bad-soft)}
.tf-card.true{border-color:rgba(15,122,87,.35);background:var(--ok-soft)}
.tf-card.lie .tf-card-text{color:var(--ink);font-weight:600}
.tf-card .btn:disabled{opacity:.4}

/* 热座 */
.hot-box{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  min-height:230px;padding:32px 24px;border-radius:18px;
  background:var(--ink);color:var(--paper);text-align:center;overflow:hidden;
}
.hot-word{
  font-size:clamp(44px,7vw,84px);font-weight:800;line-height:1.08;letter-spacing:.06em;
  word-break:break-word;
}
.hot-word.hit{animation:hotHit .38s var(--ease)}
@keyframes hotHit{0%{transform:scale(1)}40%{transform:scale(.97);color:#F0C14B}100%{transform:scale(1)}}
.hot-box .big-sub{color:rgba(251,243,231,.55);font-size:13px}
#hsCats{flex-wrap:nowrap}
#hsCats button{min-width:0;flex:1;padding:9px 5px;font-size:12.5px;letter-spacing:0}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .cat-head{grid-template-columns:96px 1fr;gap:18px}
  .cat-blurb{grid-column:1 / -1;justify-self:start;margin-top:4px;max-width:60ch}
  .sheet-grid{grid-template-columns:minmax(260px,300px) 1fr}
  .sheet-rules{padding:24px}
  .sheet-stage{padding:24px}
}
@media (max-width:820px){
  .hero{padding:92px 0 108px;min-height:92svh}
  .hero-art{right:-30vw;top:46%;width:86vw;height:86vw;opacity:.3}
  .hero-art-num{font-size:62vw}
  .hero-art-label{display:none}
  .hero-art-ring{left:auto;right:12%;bottom:16%;width:52%}
  .hero-marquee{gap:0;justify-content:space-between;font-size:10.5px;letter-spacing:.1em;padding-inline:5vw}
  .how{padding:76px 0 64px}
  .tips{grid-template-columns:1fr;gap:0}
  .tips li{padding:24px 0;border-bottom:1px solid var(--line)}
  .tips li:first-child{padding-top:6px}
  .materials{grid-template-columns:1fr;gap:14px;margin-top:44px}
  .library{padding-bottom:80px}
  .library-head{padding-top:52px}
  .sec-head{margin-bottom:34px}
  .filter-inner{gap:10px;padding:12px 0}
  .filter-label{display:none}
  .filter-count{display:none}
  .filter-chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:2px}
  .filter-chips::-webkit-scrollbar{display:none}
  .filter-chip{flex:none}
  .cat-head{grid-template-columns:1fr;gap:6px;align-items:start}
  .cat-range{order:-1}
  .cat-blurb{grid-column:auto;justify-self:start;margin-top:6px;max-width:100%}
  .row-btn{grid-template-columns:38px minmax(0,1fr);gap:14px;padding:20px 4px 20px 0}
  .row-go{display:none}
  .row-desc{margin-top:6px}
  .sheet{padding:0}
  .sheet-panel{height:100svh;width:100%;border-radius:0}
  .sheet-head{padding:16px 20px}
  .sheet-head h2{font-size:20px}
  .sheet-grid{grid-template-columns:1fr;overflow:auto}
  .sheet-rules{order:2;border-right:none;border-top:1px solid var(--line);overflow:visible;padding:22px 20px 40px}
  .sheet-stage{order:1;overflow:visible;padding:20px}
  .split{grid-template-columns:1fr}
  .tray{grid-template-columns:repeat(3,1fr)}
  .reels{grid-template-columns:1fr 1fr}
  .quiz3{grid-template-columns:1fr 1fr 1fr}
}
@media (max-width:520px){
  .row-btn{grid-template-columns:30px minmax(0,1fr)}
  .tier{grid-row:2}
  .hero-actions{gap:10px}
  .btn-lg{padding:14px 22px;font-size:15px}
  .stage-top{gap:8px}
  .hud{padding:7px 10px}
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-delay:0ms!important;transition-duration:.001ms!important}
  html{scroll-behavior:auto}
  .reveal,.game-row{opacity:1;transform:none}
}

@media (max-width:680px){
  .tf-cards{grid-template-columns:1fr}
  .tf-card{min-height:auto}
  .tf-lie-seg{flex:1 1 100%;width:100%}
  .hot-box{min-height:200px;padding:26px 18px}
  .hot-word{font-size:clamp(38px,12vw,56px)}
}