@font-face{
  font-family:'NotoSC';
  src:url('../assets/fonts/NotoSansSC.ttf') format('truetype');
  font-weight:100 900;font-display:swap;
}
@font-face{
  font-family:'PinyinWrite';
  src:url('../assets/fonts/QidianPinyin.ttf') format('truetype');
  font-weight:400;font-display:swap;
}
:root{
  --ink:#263f3a; --ink-2:#586b60; --ink-3:#857c68;
  --paper:#fffdf7; --paper-2:#f1f5e9;
  --green:#24776c; --green-d:#124f48; --green-l:#e2f0e6;
  --gold:#f2c85b; --gold-d:#9a641b;
  --blue:#3c8077; --blue-d:#1c5b53;
  --coral:#c65e49; --coral-d:#8f3d30;
  --purple:#a37a48; --purple-d:#6f5130;
  --teal:#2f7f74; --teal-d:#174f49;
  --line:rgba(23,79,73,.16);
  --shadow-soft:0 6px 0 rgba(38,63,58,.07),0 16px 28px rgba(38,63,58,.10);
  --shadow-card:0 10px 0 rgba(38,63,58,.08),0 22px 36px rgba(38,63,58,.12);
  --r-l:30px; --r-m:22px; --r-s:15px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0;overflow:hidden;background:#edf3e8;
  font-family:'NotoSC',system-ui,-apple-system,'PingFang SC',sans-serif;color:var(--ink);
  user-select:none;-webkit-user-select:none}
#stage{
  position:absolute;left:50%;top:50%;width:1024px;height:768px;
  transform:translate(-50%,-50%) scale(1);transform-origin:center center;
  overflow:hidden;border-radius:22px;background:var(--paper-2);
  box-shadow:0 28px 70px rgba(38,63,58,.24);
}
:where(button,[role="button"],input,textarea):focus-visible{
  outline:3px solid var(--coral)!important;outline-offset:3px;
}
/* ---------- sky ---------- */
.sky{position:absolute;inset:0;overflow:hidden;
  background:linear-gradient(180deg,#fbfdf7 0%,#f2f7e9 52%,#e7efdb 100%)}
.sky .sun{position:absolute;right:110px;top:-100px;width:430px;height:430px;border-radius:50%;
  background:radial-gradient(circle at 50% 50%,rgba(255,239,177,.9),rgba(242,200,91,.24) 46%,rgba(242,200,91,0) 72%)}
.sky .hills{position:absolute;left:-5%;right:-5%;bottom:-40px;height:210px;
  background:
    radial-gradient(120% 100% at 20% 100%,#d8e2c6 0 55%,transparent 56%),
    radial-gradient(120% 100% at 55% 100%,#c9d9b9 0 60%,transparent 61%),
    radial-gradient(120% 100% at 85% 100%,#dce6cc 0 58%,transparent 59%);
  opacity:.72;filter:blur(1px)}
.cloud{position:absolute;height:70px;width:190px;background:#fffdf7;border-radius:60px;opacity:.68;
  filter:blur(.3px);animation:drift 46s linear infinite}
.cloud:before,.cloud:after{content:'';position:absolute;background:#fffdf7;border-radius:50%}
.cloud:before{width:92px;height:92px;left:26px;top:-38px}
.cloud:after{width:64px;height:64px;right:30px;top:-26px}
.cloud.c1{top:80px;left:-220px;animation-duration:52s}
.cloud.c2{top:170px;left:-220px;transform:scale(.72);animation-duration:68s;animation-delay:-20s;opacity:.48}
.cloud.c3{top:40px;left:-220px;transform:scale(.9);animation-duration:60s;animation-delay:-38s;opacity:.56}
@keyframes drift{from{transform:translateX(0)}to{transform:translateX(1400px)}}
/* ---------- generic ---------- */
#app{position:absolute;inset:0}
.screen{position:absolute;inset:0;display:flex;flex-direction:column;animation:fade .28s ease both}
@keyframes fade{from{opacity:0;transform:scale(.985)}to{opacity:1;transform:none}}
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:16px 34px;border:0;border-radius:999px;cursor:pointer;font-family:inherit;
  font-size:24px;font-weight:900;letter-spacing:.04em;color:#fff;
  background:linear-gradient(180deg,#2e8377 0%,var(--green) 100%);
  box-shadow:0 6px 0 var(--green-d),0 14px 24px rgba(38,63,58,.18),inset 0 2px 0 rgba(255,255,255,.24);
  transition:transform .12s ease,box-shadow .12s ease,filter .18s ease;
  text-shadow:none;
}
.btn:hover{filter:none;transform:translateY(-2px)}
.btn:active{transform:translateY(4px);box-shadow:0 2px 0 var(--green-d),0 7px 14px rgba(38,63,58,.16)}
.btn.gold{background:linear-gradient(180deg,#f7d77d,var(--gold));box-shadow:0 6px 0 var(--gold-d),0 14px 24px rgba(38,63,58,.15),inset 0 2px 0 rgba(255,255,255,.46);color:#553b16;text-shadow:none}
.btn.blue{background:linear-gradient(180deg,#3c8077,var(--blue));box-shadow:0 6px 0 var(--blue-d),0 14px 24px rgba(38,63,58,.16),inset 0 2px 0 rgba(255,255,255,.26)}
.btn.coral{background:linear-gradient(180deg,#b64f3c,#b9513d);box-shadow:0 6px 0 var(--coral-d),0 14px 24px rgba(38,63,58,.16),inset 0 2px 0 rgba(255,255,255,.24)}
.btn.small{font-size:18px;padding:11px 24px;box-shadow:0 5px 0 var(--green-d),0 10px 18px rgba(38,63,58,.15),inset 0 2px 0 rgba(255,255,255,.24)}
.btn.gold.small{box-shadow:0 5px 0 var(--gold-d),0 10px 18px rgba(38,63,58,.14),inset 0 2px 0 rgba(255,255,255,.46)}
.btn.blue.small{box-shadow:0 5px 0 var(--blue-d),0 10px 18px rgba(38,63,58,.14),inset 0 2px 0 rgba(255,255,255,.26)}
.btn.coral.small{box-shadow:0 5px 0 var(--coral-d),0 10px 18px rgba(38,63,58,.14),inset 0 2px 0 rgba(255,255,255,.24)}
.btn.ghost{background:rgba(255,250,240,.9);color:var(--teal-d);box-shadow:0 5px 0 rgba(38,63,58,.12),inset 0 0 0 2px rgba(23,79,73,.1);text-shadow:none;font-weight:800}
.btn[disabled]{filter:grayscale(.55) opacity(.6);pointer-events:none}
.round{width:64px;height:64px;border-radius:20px;border:2px solid rgba(23,79,73,.1);display:grid;place-items:center;cursor:pointer;
  color:var(--teal-d);background:linear-gradient(180deg,#fffdf7,#f6e8ca);box-shadow:0 5px 0 rgba(38,63,58,.13),0 11px 20px rgba(38,63,58,.11),inset 0 2px 0 #fff;
  transition:transform .12s,box-shadow .12s}
.round:active{transform:translateY(3px);box-shadow:0 2px 0 rgba(38,63,58,.13)}
.round svg{width:29px;height:29px}
.pill{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;border-radius:999px;
  background:rgba(255,250,240,.92);box-shadow:0 4px 0 rgba(38,63,58,.09),inset 0 0 0 2px rgba(23,79,73,.08);
  font-weight:800;font-size:16px;color:var(--teal-d)}
.hidden{display:none!important}

/* ---------- launch ---------- */
.launch{justify-content:center;align-items:center;text-align:center}
.launch .logo{width:210px;filter:drop-shadow(0 14px 20px rgba(38,63,58,.18));animation:bob 3.4s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0) rotate(-.4deg)}50%{transform:translateY(-10px) rotate(.5deg)}}
.launch .tag{margin:8px 0 28px;font-size:22px;font-weight:800;color:var(--ink-2);letter-spacing:.08em}
.launch .start{font-size:29px;padding:19px 58px}
.launch .login{position:absolute;right:26px;top:24px}
.launch .letters{position:absolute;right:38px;bottom:32px;display:flex;align-items:flex-end;gap:8px;z-index:4}
.launch .letters img{width:108px;filter:drop-shadow(0 9px 10px rgba(38,63,58,.16))}
.launch .letters img:nth-child(2){width:80px}
.launch .letters img:nth-child(3){width:66px}
.launch .ground{position:absolute;left:0;right:0;bottom:0;height:142px;
  background:linear-gradient(180deg,rgba(239,220,171,0),#eddbad 46%,#dfc68f)}
/* ---------- top bar ---------- */
.topbar{position:absolute;left:0;right:0;top:0;height:110px;display:flex;align-items:center;gap:14px;padding:16px 24px;z-index:5}
.topbar .grow{flex:1}
.wood-sign{position:relative;margin:0 auto;padding:13px 32px 14px;border-radius:20px;
  background:linear-gradient(180deg,#327f74,#1d6258);color:#fff;font-size:26px;font-weight:900;
  letter-spacing:.04em;box-shadow:0 6px 0 #12493f,0 14px 24px rgba(38,63,58,.2),inset 0 2px 0 rgba(255,255,255,.2);
  text-shadow:none}
.wood-sign:before,.wood-sign:after{content:'';position:absolute;top:-24px;width:6px;height:31px;border-radius:4px;
  background:#d7b96f;box-shadow:0 2px 5px rgba(38,63,58,.18)}
.wood-sign:before{left:38px;transform:rotate(-4deg)}
.wood-sign:after{right:38px;transform:rotate(4deg)}
.wood-sign small{display:block;font-size:14px;font-weight:700;color:#f8e8b8;letter-spacing:.16em;margin-top:2px}
.all-open-chip{display:flex;align-items:center;gap:7px;padding:10px 15px;border-radius:18px;cursor:pointer;
  background:linear-gradient(180deg,#f8db8a,#f2c85b);box-shadow:0 5px 0 #aa7627,0 11px 20px rgba(38,63,58,.14),inset 0 2px 0 rgba(255,255,255,.45);
  font-weight:900;color:#553b16;font-size:16px;white-space:nowrap;border:0;font-family:inherit}
.all-open-chip svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round}
/* ---------- lesson map ---------- */
.unit-wrap{position:absolute;inset:0;display:flex;flex-direction:column}
.rail{position:absolute;left:0;right:0;top:150px;bottom:190px;display:block;padding:0 32px}
.rail-inner{height:100%;display:grid;grid-template-columns:repeat(var(--card-count,4),minmax(0,1fr));align-items:center;gap:clamp(12px,1.8vw,20px)}
.lcard{position:relative;width:100%;max-width:236px;height:322px;justify-self:center;border-radius:26px;cursor:pointer;
  padding:0;font-family:inherit;text-align:center;
  background:linear-gradient(180deg,#fffefb,#eff7ef);border:2px solid rgba(23,79,73,.14);
  box-shadow:0 8px 0 rgba(23,79,73,.10),0 18px 28px rgba(38,63,58,.10),inset 0 2px 0 #fff;
  transition:transform .18s ease,box-shadow .18s ease;overflow:clip}
.lcard:before{content:'';position:absolute;inset:0;background:
  radial-gradient(70% 40% at 50% 12%,rgba(255,255,255,.75),transparent 72%);pointer-events:none}
.lcard:hover{transform:translateY(-7px)}
.lcard .art{position:absolute;left:50%;top:45%;transform:translate(-50%,-50%);width:min(160px,88%);max-height:160px;object-fit:contain;
  filter:drop-shadow(0 8px 9px rgba(38,63,58,.20));animation:bob 4s ease-in-out infinite}
.lcard .glyph{position:absolute;left:18px;top:12px;font-size:40px;font-weight:900;color:var(--teal-d);
  text-shadow:none}
.lcard .label{position:absolute;left:0;right:0;bottom:52px;text-align:center;font-size:22px;font-weight:900;color:var(--teal-d);
  text-shadow:none}
.lcard .stars{position:absolute;left:0;right:0;bottom:18px;display:flex;justify-content:center;gap:5px}
.lcard .stars i{width:20px;height:20px;background:#bdcbc4;-webkit-mask:url('../assets/img/ui/star.png') center/contain no-repeat;mask:url('../assets/img/ui/star.png') center/contain no-repeat;opacity:.75}
.lcard .stars i.on{background:#f0b63f;opacity:1;filter:drop-shadow(0 2px 1px rgba(96,65,20,.18))}
.lcard .lock{position:absolute;right:12px;top:12px;width:42px;height:42px;background:url('../assets/img/ui/lock.png') center/contain no-repeat;filter:drop-shadow(0 3px 4px rgba(38,63,58,.22))}
.lcard.locked{filter:saturate(.65) brightness(.94)}
.lcard.exam{height:322px;background:linear-gradient(160deg,#fff9e6,#f7e8b8)}
.lcard.exam .label{color:#604114;text-shadow:none}
.lcard.exam .art{width:min(132px,82%)}
.bottom-hud{position:absolute;left:0;right:0;bottom:0;height:200px;display:grid;grid-template-columns:204px minmax(0,1fr);
  column-gap:16px;align-items:end;padding:0 20px 22px 22px;pointer-events:none}
.bottom-hud .ground{position:absolute;left:0;right:0;bottom:0;height:142px;
  background:linear-gradient(180deg,rgba(231,241,222,0),#e6efdc 42%,#d8e5ca);
  box-shadow:inset 0 10px 24px rgba(255,253,247,.38)}
.bottom-nav{position:relative;z-index:1;grid-column:2;grid-row:1;min-width:0;display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:6px;pointer-events:auto}
.navbtn{min-width:44px;min-height:64px;display:flex;flex-direction:column;align-items:center;gap:6px;padding:6px 2px 4px;cursor:pointer;
  background:none;border:0;border-radius:17px;font-family:inherit;font-weight:900;font-size:14px;line-height:1.2;
  color:var(--teal-d);text-shadow:none;transition:color .18s,background .18s}
.navbtn .disc{width:54px;height:54px;flex:none;border-radius:17px;display:grid;place-items:center;
  color:var(--teal-d);background:linear-gradient(180deg,#fffdf7,#f4efdc);border:2px solid rgba(23,79,73,.12);
  box-shadow:0 5px 0 rgba(38,63,58,.13),0 10px 18px rgba(38,63,58,.09),inset 0 2px 0 #fff;
  transition:transform .14s,box-shadow .14s,background .14s}
.navbtn .disc .nav-icon{width:44px;height:44px;object-fit:contain;display:block}
.navbtn:hover{color:#8f3d30;background:rgba(255,253,247,.46)}
.navbtn:hover .disc{color:#8f3d30;background:#fff5da;transform:translateY(-3px)}
.navbtn:active .disc{transform:translateY(3px);box-shadow:0 2px 0 rgba(38,63,58,.15)}
.nav-label{white-space:nowrap;line-height:1.2}
.guest{position:relative;z-index:1;grid-column:1;grid-row:1;align-self:end;width:100%;min-width:0;min-height:54px;margin-bottom:5px;
  display:flex;align-items:center;gap:10px;pointer-events:auto;cursor:pointer;padding:0;border:0;background:none;font-family:inherit;text-align:left}
.guest .avatar{width:54px;height:54px;flex:none;border-radius:18px;background:linear-gradient(160deg,#fff3d5,#edc58c);
  box-shadow:0 4px 0 rgba(38,63,58,.13),inset 0 0 0 2px rgba(255,255,255,.6)}
.guest .txt{min-width:0;font-size:12px;font-weight:800;color:var(--ink-2);line-height:1.35;text-shadow:none}
.guest .txt b{display:block;font-size:18px;color:var(--teal-d);white-space:nowrap;text-overflow:ellipsis;overflow:clip}
.guest .txt span{display:block;white-space:nowrap}
/* ---------- lesson player ---------- */
.lesson{background:#173f3a}
.lesson-scene{position:absolute;inset:0;overflow:hidden}
.lesson-scene .bg{position:absolute;inset:0;background-size:cover;background-position:center;transition:opacity .5s}
.lesson-scene .shade{position:absolute;inset:0;background:radial-gradient(70% 60% at 50% 40%,transparent,rgba(23,63,58,.3))}
.stage-tabs{position:absolute;left:20px;top:18px;display:flex;align-items:center;gap:2px;padding:6px 8px;border-radius:999px;
  background:linear-gradient(180deg,#f8e7bd,#eccd8f);box-shadow:0 5px 0 rgba(98,70,26,.3),inset 0 2px 0 rgba(255,255,255,.65);z-index:8}
.stage-tabs .st{display:flex;align-items:center;font-size:21px;font-weight:900;color:#795523;padding:4px 10px;border-radius:999px;
  transition:.2s;cursor:default}
.stage-tabs .st.on{background:linear-gradient(180deg,#d3735b,#b9513d);color:#fff;box-shadow:0 3px 0 #833729,inset 0 2px 0 rgba(255,255,255,.24)}
.stage-tabs .sep{color:#b08b4e;font-size:15px;margin:0 1px}
.lesson .pause{position:absolute;right:20px;top:18px;z-index:8}
.lesson .skip{position:absolute;right:22px;bottom:22px;width:78px;height:78px;border-radius:24px;z-index:8;
  background:linear-gradient(180deg,#388b7f,#24776c);box-shadow:0 7px 0 #124f48,0 14px 22px rgba(38,63,58,.28),inset 0 3px 0 rgba(255,255,255,.24);
  display:grid;place-items:center;cursor:pointer;border:0}
.lesson .skip svg{width:36px;height:36px;fill:#fff}
.lesson .progress{position:absolute;left:0;right:0;bottom:0;height:12px;background:rgba(38,63,58,.24);z-index:8}
.lesson .progress i{display:block;height:100%;background:linear-gradient(90deg,#f8df91,#edb94b);border-radius:0 8px 8px 0;transition:width .4s}
.lesson .pct{position:absolute;left:16px;bottom:20px;font-size:20px;font-weight:900;color:#fff;text-shadow:0 2px 0 rgba(38,63,58,.4);z-index:8}
.scene-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:70px 120px 90px}
.big-letter{width:min(40vh,300px);max-height:300px;object-fit:contain;
  filter:drop-shadow(0 18px 22px rgba(38,63,58,.28));animation:pop .5s cubic-bezier(.2,1.4,.4,1) both}
@keyframes pop{from{transform:scale(.6);opacity:0}to{transform:scale(1);opacity:1}}
.scene-card{max-width:720px;background:rgba(255,250,240,.96);border-radius:26px;padding:22px 34px;text-align:center;
  box-shadow:0 16px 36px rgba(38,63,58,.24),inset 0 2px 0 #fff}
.scene-card h3{margin:0 0 6px;font-size:34px;letter-spacing:.06em}
.scene-card p{margin:0;font-size:20px;color:var(--ink-2);font-weight:700}
.scene-card .py{font-size:26px;font-weight:900;color:#b9513d;letter-spacing:.08em}
.tone-row{display:flex;gap:20px;margin-top:8px}
.tone-card{width:150px;padding:16px 10px 14px;border-radius:22px;background:rgba(255,250,240,.97);text-align:center;cursor:pointer;
  box-shadow:0 8px 0 rgba(38,63,58,.13),0 16px 24px rgba(38,63,58,.18);transition:transform .12s}
.tone-card:hover{transform:translateY(-6px)}
.tone-card .t{font-size:54px;font-weight:900;line-height:1;color:var(--teal-d)}
.tone-card .w{font-size:20px;font-weight:800;margin-top:8px}
.tone-card .p{font-size:14px;color:var(--ink-3);font-weight:700}
.mascot{position:absolute;left:28px;bottom:16px;width:170px;filter:drop-shadow(0 12px 16px rgba(38,63,58,.28));animation:bob 3.6s ease-in-out infinite;z-index:6}
.speech{position:absolute;left:190px;bottom:120px;max-width:330px;padding:16px 22px;border-radius:22px;background:var(--paper);
  font-size:20px;font-weight:800;box-shadow:0 10px 24px rgba(38,63,58,.2);z-index:6}
.speech:after{content:'';position:absolute;left:-14px;bottom:16px;border:12px solid transparent;border-right-color:var(--paper)}
/* writing */
.write-wrap{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,#faf3e3,#e6edda)}
.write-board{position:relative;width:720px;height:360px;border-radius:28px;background:
  repeating-linear-gradient(to bottom,rgba(198,94,73,.3) 0 2px,transparent 2px 33.333333%),#fffaf0;
  box-shadow:0 18px 40px rgba(38,63,58,.18),inset 0 0 0 6px #fff,inset 0 -2px 0 rgba(198,94,73,.4),inset 0 0 0 8px rgba(38,63,58,.09);
  background-position:center;border:4px solid #e5d5b4}
.write-board canvas{position:absolute;inset:0;width:100%;height:100%;border-radius:24px}
.write-board .ghost{position:absolute;inset:0;font-size:220px;font-weight:400;text-align:center;pointer-events:none;
  color:rgba(38,63,58,.14);font-family:'PinyinWrite',sans-serif;line-height:1}
.write-tools{position:absolute;right:36px;bottom:34px;display:flex;gap:14px;z-index:7}
/* ---------- modal ---------- */
#modal-root{position:absolute;inset:0;pointer-events:none;z-index:40}
.dim{position:absolute;inset:0;background:rgba(23,47,42,.46);backdrop-filter:blur(3px);pointer-events:auto;
  display:grid;place-items:center;animation:fade .2s both}
.sheet{position:relative;width:640px;background:var(--paper);border-radius:30px;padding:34px 38px 30px;
  box-shadow:0 26px 60px rgba(23,47,42,.32),inset 0 3px 0 #fff;animation:pop .28s cubic-bezier(.2,1.3,.4,1) both;
  pointer-events:auto;max-height:660px;overflow:auto}
.sheet h2{margin:0 0 14px;font-size:30px;letter-spacing:.04em}
.sheet p{margin:0 0 10px;font-size:17px;line-height:1.7;color:var(--ink-2)}
.sheet .row{display:flex;gap:14px;justify-content:flex-end;margin-top:22px}
.sheet .close-x{position:absolute;right:18px;top:14px;width:44px;height:44px;min-width:44px;min-height:44px;
  padding:0;border:0;border-radius:50%;display:grid;place-items:center;background:transparent;font-family:inherit;
  font-size:30px;font-weight:900;color:var(--ink-3);cursor:pointer;line-height:1}
/* ---------- lib / grid ---------- */
.page{position:absolute;inset:0;overflow:auto;padding:120px 30px 40px}
.page-bg{position:absolute;inset:0;background:linear-gradient(180deg,#fffdf7,#f0f6e9 60%,#e8f0df)}
.chips{display:flex;gap:12px;justify-content:center;margin-bottom:22px;flex-wrap:wrap}
.chip{padding:11px 22px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;font-size:18px;font-weight:900;
  background:rgba(255,250,240,.92);color:var(--ink-2);box-shadow:0 4px 0 rgba(38,63,58,.1),inset 0 0 0 2px rgba(23,79,73,.07)}
.chip.on{background:linear-gradient(180deg,#f7d77d,#f2c85b);color:#553b16;box-shadow:0 4px 0 #aa7627,inset 0 2px 0 rgba(255,255,255,.46)}
.grid{display:grid;grid-template-columns:repeat(6,1fr);gap:18px;max-width:940px;margin:0 auto}
.tile{position:relative;aspect-ratio:1/.92;border:0;padding:0;font-family:inherit;color:inherit;border-radius:22px;background:linear-gradient(180deg,#fffdf7,#f8ecd2);cursor:pointer;
  box-shadow:0 7px 0 rgba(38,63,58,.1),0 14px 22px rgba(38,63,58,.12),inset 0 2px 0 #fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;transition:transform .12s}
.tile:hover{transform:translateY(-5px)}
.tile img{width:74%;height:58%;object-fit:contain;filter:drop-shadow(0 5px 6px rgba(38,63,58,.1))}
.tile .t{font-size:20px;font-weight:900}
.tile .s{font-size:12px;color:var(--ink-3);font-weight:700}
/* ---------- quiz ---------- */
.quiz{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:110px 90px 60px;background:linear-gradient(180deg,#f9f1dd,#e5edd9)}
.q-prompt{background:var(--paper);border-radius:24px;padding:18px 34px;font-size:26px;font-weight:900;
  box-shadow:var(--shadow-soft);text-align:center}
.q-speaker{display:flex;align-items:center;gap:12px;cursor:pointer}
.q-speaker .ic{width:62px;height:62px;border-radius:20px;background:linear-gradient(180deg,#55958b,#2f7f74);display:grid;place-items:center;
  box-shadow:0 6px 0 #174f49,inset 0 2px 0 rgba(255,255,255,.26)}
.q-speaker .ic svg{width:30px;height:30px;fill:#fff}
.q-options{display:flex;gap:22px;flex-wrap:wrap;justify-content:center}
.opt{min-width:170px;padding:22px 26px;border:0;font-family:inherit;color:inherit;border-radius:24px;background:linear-gradient(180deg,#fffdf7,#f8ecd2);cursor:pointer;
  font-size:40px;font-weight:900;text-align:center;box-shadow:0 8px 0 rgba(38,63,58,.12),0 16px 24px rgba(38,63,58,.13),inset 0 2px 0 #fff;
  transition:transform .1s}
.opt:active{transform:translateY(6px)}
.opt.right{background:linear-gradient(180deg,#4b988b,#2f7f74);box-shadow:0 8px 0 #174f49,inset 0 2px 0 rgba(255,255,255,.24);color:#fff}
.opt.wrong{background:linear-gradient(180deg,#d3735b,#b9513d);box-shadow:0 8px 0 #833729,inset 0 2px 0 rgba(255,255,255,.24);color:#fff}
.opt .sub{display:block;font-size:20px;font-weight:800;color:var(--ink-2);margin-top:4px}
.opt.right .sub,.opt.wrong .sub{color:#fff8e8}
/* ---------- report / stars ---------- */
.report{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;
  background:radial-gradient(60% 60% at 50% 40%,#fffaf0,#f7e7b9 70%,#efd28a)}
.report .big-stars{display:flex;gap:16px}
.report .big-stars i{width:72px;height:72px;background:url('../assets/img/ui/star.png') center/contain no-repeat;filter:grayscale(1);opacity:.35;transform:scale(.6);transition:.4s}
.report .big-stars i.on{filter:none;opacity:1;transform:scale(1)}
.report h2{font-size:44px;margin:0}
.report .sub{font-size:20px;font-weight:800;color:#795523}
.stat-row{display:flex;gap:26px;margin-top:6px}
.stat{background:var(--paper);border-radius:20px;padding:14px 26px;text-align:center;box-shadow:var(--shadow-soft)}
.stat b{display:block;font-size:30px}
.stat span{font-size:14px;color:var(--ink-3);font-weight:800}
/* ---------- all features ---------- */
.vip-page{position:absolute;inset:0;overflow:auto;background:linear-gradient(180deg,#fffdf7,#edf5e8);color:var(--ink);padding:96px 54px 28px}
.vip-head{display:flex;align-items:center;gap:16px;margin-bottom:18px;min-height:74px}
.vip-head img{width:72px;height:72px;object-fit:contain;filter:drop-shadow(0 8px 10px rgba(38,63,58,.16))}
.vip-head h1{margin:0;font-size:32px;letter-spacing:.03em;color:var(--teal-d)}
.vip-head p{margin:3px 0 0;color:var(--ink-2);font-weight:700;font-size:15px}
.feature-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.feature-card{min-height:150px;border-radius:22px;padding:15px 16px;cursor:pointer;background:linear-gradient(180deg,#fffefb,#f2f8ef);
  box-shadow:var(--shadow-soft);border:2px solid rgba(23,79,73,.10);display:flex;flex-direction:column;align-items:flex-start;
  font-family:inherit;text-align:left;transition:transform .16s,border-color .16s,box-shadow .16s}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(47,127,116,.36);box-shadow:0 8px 0 rgba(38,63,58,.08),0 18px 28px rgba(38,63,58,.14)}
.feature-card:active{transform:translateY(1px)}
.feature-icon{width:48px;height:48px;border-radius:15px;display:grid;place-items:center;background:#fffdf7;color:var(--teal-d);margin-bottom:9px;
  border:2px solid rgba(23,79,73,.10);box-shadow:inset 0 2px 0 #fff}
.feature-icon .feature-icon-img{width:42px;height:42px;object-fit:contain;display:block}
.all-open-banner .feature-icon-img{width:32px;height:32px;object-fit:contain;display:block}
.feature-card h3{font-size:18px;margin:0 0 4px;color:var(--teal-d)}
.feature-card p{font-size:13px;line-height:1.45;margin:0;color:var(--ink-2);font-weight:700}
.feature-status{font-size:12px;color:#9a641b;font-weight:900;margin-top:auto;padding-top:7px}
.all-open-banner{margin-top:18px;display:flex;align-items:center;gap:12px;padding:14px 20px;border-radius:20px;
  background:linear-gradient(180deg,#f8dfa0,#f2cf73);color:#553b16;font-weight:900;font-size:17px;
  box-shadow:0 6px 0 rgba(154,100,27,.28),inset 0 2px 0 rgba(255,255,255,.42)}
.all-open-banner svg{width:28px;height:28px;flex:none;fill:none;stroke:currentColor;stroke-width:2.7;stroke-linecap:round;stroke-linejoin:round}
.vip-actions{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:18px}
.vip-actions .note{font-size:13px;line-height:1.5;color:var(--ink-2);font-weight:700;max-width:520px}
.vip-actions .buttons{display:flex;gap:12px;flex:none}
.vip-actions .btn{font-size:18px;padding:12px 22px}
/* ---------- toast ---------- */
#toast-root{position:absolute;left:0;right:0;top:20px;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none;z-index:60}
.toast{padding:12px 26px;border-radius:999px;background:rgba(23,63,58,.94);color:#fff;font-weight:800;font-size:17px;
  box-shadow:0 10px 24px rgba(38,63,58,.24);animation:toastIn .25s both}
@keyframes toastIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
/* ---------- misc ---------- */
.float-up{animation:floatUp .9s ease-out forwards}
@keyframes floatUp{from{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-80px) scale(1.2)}}
.hand-hint{position:absolute;width:120px;pointer-events:none;animation:tap 1.6s ease-in-out infinite;z-index:9}
@keyframes tap{0%,100%{transform:translate(0,0) rotate(-8deg)}50%{transform:translate(-14px,10px) rotate(-8deg)}}
.setting-row{display:flex;align-items:center;justify-content:space-between;padding:16px 4px;border-bottom:2px dashed var(--line);font-size:19px;font-weight:800}
.setting-row:last-child{border-bottom:0}
.switch{width:64px;min-width:64px;height:44px;min-height:44px;padding:0;border:0;border-radius:999px;
  background:transparent;position:relative;cursor:pointer;flex:none}
.switch:before{content:'';position:absolute;left:0;right:0;top:4px;height:36px;border-radius:999px;background:#d8ccb4;transition:.2s}
.switch i{position:absolute;left:3px;top:7px;width:30px;height:30px;border-radius:50%;background:#fff;transition:.2s;box-shadow:0 2px 6px rgba(38,63,58,.2)}
.switch.on{background:transparent}
.switch.on:before{background:var(--green)}
.switch.on i{left:31px}
.slider{width:220px;accent-color:var(--green)}
.keypoint{background:var(--paper);border-radius:24px;padding:22px 26px;margin:0 auto 18px;max-width:820px;
  box-shadow:var(--shadow-card)}
.keypoint h3{margin:0 0 8px;font-size:24px}
.keypoint p{margin:0;font-size:17px;line-height:1.7;color:var(--ink-2);font-weight:700}
.keypoint .examples{display:flex;gap:12px;margin-top:12px;flex-wrap:wrap}
.keypoint .ex{padding:8px 16px;border-radius:14px;background:#f8e8bb;font-weight:900;font-size:20px;cursor:pointer}
.book{width:200px;height:260px;border-radius:18px;background:linear-gradient(160deg,#438b80,#245f56);color:#fff;padding:18px;
  box-shadow:0 10px 0 rgba(38,63,58,.15),0 18px 28px rgba(38,63,58,.18);cursor:pointer;display:flex;flex-direction:column;justify-content:space-between}
.book b{font-size:22px}
.book span{font-size:14px;opacity:.85;font-weight:700}

/* ---------- 感知环节：四拍分镜 ---------- */
.sense-fore{position:absolute;left:50%;bottom:0;height:100%;width:auto;transform:translateX(-50%);
  pointer-events:none;z-index:1;opacity:.96}
.sense-cap{position:absolute;left:50%;top:104px;transform:translateX(-50%);font-size:17px;font-weight:900;
  color:#fff;text-shadow:0 2px 0 rgba(38,63,58,.35);z-index:7;letter-spacing:.08em}
.sense-beats{position:absolute;left:50%;top:136px;transform:translateX(-50%);display:flex;gap:10px;z-index:7}
.sense-beats i{width:32px;height:8px;border-radius:99px;background:rgba(255,255,255,.5);
  box-shadow:0 2px 0 rgba(38,63,58,.18);transition:width .25s}
.sense-beats i.on{background:#f2c85b;width:48px}
.sense-sub{position:absolute;left:50%;bottom:78px;transform:translateX(-50%);width:min(700px,72%);
  background:rgba(255,250,240,.96);border-radius:22px;padding:15px 26px;text-align:center;font-size:23px;
  font-weight:800;color:var(--ink);box-shadow:0 12px 26px rgba(38,63,58,.24),inset 0 2px 0 #fff;z-index:7;cursor:pointer;
  line-height:1.45}
.sense-next{position:absolute;right:26px;bottom:150px;z-index:8}
@media (prefers-reduced-motion:reduce){
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}