/* =========================================================
   智道AI · 世界创新港 · 第 01 课
   《世界为什么不能换一种方式？》互动课件
   ========================================================= */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#050914;--bg2:#0A1126;--panel:rgba(16,24,50,.72);--panel2:rgba(255,255,255,.045);
  --ink:#F7F2E6;--dim:#A7AFC4;--faint:#6D7690;
  --gold:#F5C451;--gold2:#FFE3A6;--teal:#4FE0D0;--coral:#FF7A6B;--violet:#A78BFA;--green:#8BD17C;--blue:#6D8DFF;
  --acc:#F5C451;--acc2:#FFE3A6;--acc-rgb:245,196,81;
  --line:rgba(255,255,255,.1);--line2:rgba(255,255,255,.18);
  --serif:"Noto Serif SC","Songti SC",serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --ease:cubic-bezier(.22,.8,.28,1);
}
html,body{height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--sans);overflow:hidden;-webkit-font-smoothing:antialiased;overscroll-behavior:none}
::selection{background:rgba(var(--acc-rgb),.3)}
::-webkit-scrollbar{width:8px;height:8px}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:5px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.24)}
button,input,textarea,select{font-family:var(--sans);color:inherit}
button{cursor:pointer;border:0;background:none}
a{color:inherit;text-decoration:none}
img{max-width:100%}
svg{display:block}
:focus-visible{outline:2px solid var(--acc);outline-offset:3px}

/* ---------- background ---------- */
#sky{position:fixed;inset:0;z-index:0;pointer-events:none}
.aura{position:fixed;inset:0;z-index:0;pointer-events:none;transition:background 1.2s var(--ease);background:
  radial-gradient(900px 620px at 12% -10%,rgba(var(--acc-rgb),.12),transparent 62%),
  radial-gradient(820px 560px at 94% 2%,rgba(79,224,208,.08),transparent 62%),
  radial-gradient(1000px 700px at 50% 112%,rgba(167,139,250,.08),transparent 64%),var(--bg)}
.aura::after{content:"";position:absolute;inset:0;opacity:.55;
  background-image:linear-gradient(rgba(255,255,255,.022) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.022) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(ellipse 85% 78% at 50% 38%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(ellipse 85% 78% at 50% 38%,#000 20%,transparent 78%)}
.grain{position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.5;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3CfeComponentTransfer%3E%3CfeFuncA type='linear' slope='.05'/%3E%3C/feComponentTransfer%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- chrome ---------- */
.progress-top{position:fixed;top:0;left:0;right:0;height:2px;z-index:70;background:rgba(255,255,255,.05)}
.progress-top i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--teal));box-shadow:0 0 14px rgba(var(--acc-rgb),.8);transition:width .6s var(--ease)}
.topbar{position:fixed;top:0;left:0;right:0;height:62px;z-index:65;display:flex;align-items:center;gap:18px;
  padding:0 clamp(14px,2.4vw,30px);background:linear-gradient(180deg,rgba(5,9,20,.92),rgba(5,9,20,.55));
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.06)}
.tb-brand{display:flex;align-items:center;gap:10px;font-size:12px;letter-spacing:.08em;font-weight:600;white-space:nowrap}
.tb-brand svg{width:22px;height:22px;flex:none}
.tb-brand small{display:block;font-size:8.5px;letter-spacing:.24em;color:var(--gold);font-weight:400;margin-top:2px}
.tb-sep{width:1px;height:22px;background:rgba(255,255,255,.1);flex:none}
.tb-chapter{display:flex;align-items:center;gap:10px;min-width:0}
.tb-chapter b{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tb-chapter span{font-size:10px;letter-spacing:.16em;color:var(--acc);white-space:nowrap}
.tb-chapter i{font-style:normal;font-size:9.5px;color:var(--faint);border:1px solid rgba(255,255,255,.12);padding:2px 7px;border-radius:99px;white-space:nowrap}
.tb-spacer{flex:1}
.tb-tools{display:flex;align-items:center;gap:4px}
.tb-btn{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;color:var(--dim);padding:8px 11px;border-radius:9px;border:1px solid transparent;transition:.22s;white-space:nowrap}
.tb-btn:hover{color:var(--ink);background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.1)}
.tb-btn svg{width:15px;height:15px}
.tb-btn.on{color:var(--acc);border-color:rgba(var(--acc-rgb),.3);background:rgba(var(--acc-rgb),.08)}

.bottombar{position:fixed;left:0;right:0;bottom:0;height:72px;z-index:65;display:flex;align-items:center;gap:16px;
  padding:0 clamp(14px,2.4vw,30px);background:linear-gradient(0deg,rgba(5,9,20,.96),rgba(5,9,20,.68));
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-top:1px solid rgba(255,255,255,.06)}
.bb-round{width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.14);display:flex;align-items:center;justify-content:center;color:var(--dim);transition:.22s;flex:none}
.bb-round:hover{color:var(--ink);border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.05)}
.bb-round svg{width:17px;height:17px}
.dots{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;min-width:0;overflow:hidden}
.dot{position:relative;height:28px;min-width:28px;padding:0 8px;border-radius:8px;display:flex;align-items:center;justify-content:center;color:var(--faint);font-size:10px;letter-spacing:.06em;transition:.22s;white-space:nowrap}
.dot::before{content:"";width:5px;height:5px;border-radius:50%;background:currentColor;transition:.22s}
.dot:hover{color:var(--ink);background:rgba(255,255,255,.05)}
.dot:hover::after{content:attr(data-label);position:absolute;bottom:34px;left:50%;transform:translateX(-50%);background:#111a33;border:1px solid rgba(255,255,255,.12);padding:5px 9px;border-radius:7px;font-size:10px;white-space:nowrap;color:var(--ink)}
.dot.done{color:rgba(var(--acc-rgb),.55)}
.dot.active{color:var(--acc);background:rgba(var(--acc-rgb),.1);padding:0 12px}
.dot.active::before{width:16px;height:4px;border-radius:3px;background:var(--acc);box-shadow:0 0 12px rgba(var(--acc-rgb),.7)}
.dot.active::after{content:attr(data-label);width:auto;height:auto;background:none;border:0;padding:0;position:static;transform:none;font-size:10.5px;color:var(--acc);letter-spacing:.06em;margin-left:7px}
.bb-next{display:flex;align-items:center;gap:12px;padding:0 18px;height:44px;border-radius:99px;border:1px solid rgba(var(--acc-rgb),.35);
  background:linear-gradient(115deg,rgba(var(--acc-rgb),.18),rgba(var(--acc-rgb),.06));transition:.26s;flex:none}
.bb-next:hover{background:linear-gradient(115deg,rgba(var(--acc-rgb),.3),rgba(var(--acc-rgb),.1));transform:translateX(2px)}
.bb-next span{font-size:10px;color:var(--dim);letter-spacing:.1em}
.bb-next b{font-size:13px;font-weight:600;color:var(--ink);max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bb-next svg{width:16px;height:16px;color:var(--acc);flex:none}

/* ---------- deck ---------- */
#deck{position:relative;z-index:2;height:100dvh;padding-top:62px;padding-bottom:72px}
.ch{position:absolute;inset:62px 0 72px 0;display:none;overflow-y:auto;overflow-x:clip;padding:clamp(18px,2.6vw,34px) clamp(16px,3vw,46px) 34px}
.ch.active{display:block;animation:chIn .62s var(--ease)}
.ch.leaving{display:block;animation:chOut .28s ease forwards;pointer-events:none}
@keyframes chIn{from{opacity:0;transform:translateY(22px);filter:blur(6px)}to{opacity:1;transform:none;filter:none}}
@keyframes chOut{to{opacity:0;transform:translateY(-14px);filter:blur(4px)}}
.ch-body{width:min(1240px,100%);margin:0 auto;min-height:100%;display:flex;flex-direction:column;justify-content:center}
.ch.cover{padding:0;overflow:hidden}
.ch.cover .ch-body{width:100%;justify-content:stretch}

/* ---------- common ---------- */
.kicker{display:flex;align-items:center;gap:12px;font-size:10px;letter-spacing:.32em;color:var(--acc);font-weight:600;text-transform:uppercase}
.kicker::before{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--acc),transparent)}
.ch-head{max-width:900px;margin-bottom:clamp(16px,2.4vw,28px);flex:none}
.act{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.act b{font-family:var(--serif);font-size:clamp(24px,2.6vw,34px);line-height:1;color:var(--acc);font-weight:700;letter-spacing:.02em}
.act span{font-size:11px;letter-spacing:.2em;color:var(--acc)}
.act i{font-style:normal;font-size:9.5px;letter-spacing:.12em;color:var(--faint);border:1px solid rgba(255,255,255,.13);padding:3px 8px;border-radius:99px;margin-left:4px}
.ch-head h2{font-family:var(--serif);font-weight:900;font-size:clamp(28px,3.6vw,48px);line-height:1.18;letter-spacing:.015em;margin:6px 0 8px}
.ch-head h2 em{font-style:normal;color:var(--acc)}
.ch-head p{font-size:clamp(13px,1.1vw,15px);line-height:1.85;color:var(--dim);max-width:720px}
.ch-head p b{color:var(--ink);font-weight:600}
.glass{background:linear-gradient(165deg,rgba(18,27,56,.78),rgba(8,13,30,.9));border:1px solid rgba(255,255,255,.09);border-radius:18px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 22px;border-radius:99px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.04);color:var(--ink);font-size:13.5px;font-weight:600;letter-spacing:.03em;transition:.28s var(--ease);white-space:nowrap}
.btn:hover{transform:translateY(-2px);background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.26)}
.btn:active{transform:translateY(0) scale(.985)}
.btn.primary{background:linear-gradient(115deg,var(--acc2),var(--acc));border-color:transparent;color:#211805;box-shadow:0 14px 36px -14px rgba(var(--acc-rgb),.65)}
.btn.primary:hover{box-shadow:0 18px 46px -14px rgba(var(--acc-rgb),.85)}
.btn.ghost{background:transparent}
.btn.sm{padding:9px 15px;font-size:12px}
.btn:disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none}
.btn svg{width:15px;height:15px;flex:none}
.tag{display:inline-flex;align-items:center;gap:5px;font-size:10.5px;color:var(--dim);border:1px solid rgba(255,255,255,.12);padding:4px 9px;border-radius:99px;line-height:1.4}
.hl{color:var(--acc);font-weight:600}
.muted{color:var(--dim)}
.serif{font-family:var(--serif)}
.center{text-align:center}

/* ---------- cover ---------- */
.cover-grid{display:grid;grid-template-columns:1.08fr .92fr;min-height:calc(100dvh - 134px);align-items:center;gap:30px;
  padding:clamp(40px,6vh,70px) clamp(26px,6vw,90px) clamp(30px,5vh,60px);position:relative;z-index:3}
.cover-copy{max-width:680px}
.cover-copy h1{font-family:var(--serif);font-weight:900;font-size:clamp(42px,5.7vw,80px);line-height:1.1;letter-spacing:.01em;margin:22px 0 0}
.cover-copy h1 .line2{display:block;color:transparent;background:linear-gradient(112deg,var(--gold2),var(--gold) 55%,#E79A3C);-webkit-background-clip:text;background-clip:text}
.cover-copy h1 .q{color:var(--gold);-webkit-text-fill-color:var(--gold);font-size:.86em}
.cover-lead{margin-top:22px;color:var(--dim);font-size:clamp(13px,1.2vw,16px);line-height:2;max-width:540px}
.cover-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.cover-meta span{font-size:10.5px;letter-spacing:.08em;color:var(--dim);border:1px solid rgba(255,255,255,.12);padding:6px 11px;border-radius:99px}
.cover-meta span.gold{color:var(--gold);border-color:rgba(245,196,81,.3);background:rgba(245,196,81,.06)}
.cover-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.cover-foot{position:absolute;left:clamp(26px,6vw,90px);right:clamp(26px,6vw,90px);bottom:20px;z-index:4;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:10px;letter-spacing:.1em;color:var(--faint)}
.cover-foot .kbd{display:flex;gap:14px;flex-wrap:wrap}
.cover-foot kbd{font-family:var(--sans);font-size:9.5px;border:1px solid rgba(255,255,255,.14);border-bottom-width:2px;border-radius:5px;padding:2px 6px;color:var(--dim);margin-right:4px}
.portal{position:relative;width:min(100%,520px);aspect-ratio:1;margin:0 auto;display:flex;align-items:center;justify-content:center}
.portal svg.rings{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.ring-a{transform-origin:center;animation:spin 46s linear infinite}
.ring-b{transform-origin:center;animation:spin 64s linear infinite reverse}
.ring-c{transform-origin:center;animation:spin 90s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.portal-core{position:relative;z-index:3;width:30%;aspect-ratio:1;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(circle at 34% 28%,rgba(255,227,166,.95),rgba(245,196,81,.55) 40%,rgba(245,196,81,.06) 70%);
  box-shadow:0 0 80px rgba(245,196,81,.35),inset 0 0 40px rgba(255,255,255,.35);animation:corePulse 5s ease-in-out infinite}
.portal-core span{font-family:var(--serif);font-size:clamp(44px,5vw,72px);color:#2a1c05;font-weight:900;line-height:1;transform:translateY(-3%)}
@keyframes corePulse{50%{transform:scale(1.05);box-shadow:0 0 110px rgba(245,196,81,.5),inset 0 0 50px rgba(255,255,255,.45)}}
.portal-word{position:absolute;z-index:4;font-family:var(--serif);font-size:clamp(12px,1.2vw,15px);letter-spacing:.2em;color:var(--gold2);
  background:rgba(8,13,30,.82);border:1px solid rgba(245,196,81,.24);padding:6px 13px;border-radius:99px;backdrop-filter:blur(6px);white-space:nowrap}
.pw1{left:4%;top:20%}.pw2{right:2%;top:26%}.pw3{left:9%;bottom:20%}.pw4{right:5%;bottom:24%}
.pencil-orbit{position:absolute;inset:0;z-index:2;animation:spin 38s linear infinite}
.pencil-orbit svg{position:absolute;width:34%;left:33%;top:-4%;filter:drop-shadow(0 10px 30px rgba(0,0,0,.5))}
.cover-stars{position:absolute;inset:0;z-index:1;pointer-events:none}
.cover-stars i{position:absolute;width:2px;height:2px;border-radius:50%;background:var(--gold2);opacity:.5;animation:twinkle 4s infinite}
@keyframes twinkle{50%{opacity:.1;transform:scale(.6)}}

/* ---------- act 1 pencil ---------- */
.pencil-layout{display:grid;grid-template-columns:1.45fr .85fr;gap:clamp(14px,2vw,24px);align-items:stretch}
.pencil-stage{position:relative;min-height:clamp(360px,52vh,480px);border-radius:22px;overflow:hidden;
  background:radial-gradient(circle at 50% 50%,rgba(var(--acc-rgb),.1),transparent 62%),linear-gradient(165deg,rgba(18,27,56,.72),rgba(7,12,28,.9));
  border:1px solid rgba(255,255,255,.09)}
.stage-halo{position:absolute;left:50%;top:50%;width:70%;aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;
  background:radial-gradient(circle,rgba(var(--acc-rgb),.12),transparent 68%);filter:blur(12px)}
.pencil-svg{position:absolute;left:50%;top:50%;width:92%;transform:translate(-50%,-50%);cursor:grab;transition:transform .5s var(--ease)}
.pencil-svg.spin{animation:pencilSpin .85s var(--ease)}
@keyframes pencilSpin{50%{transform:translate(-50%,-50%) rotate(190deg) scale(.92)}to{transform:translate(-50%,-50%) rotate(360deg)}}
.hotspot{position:absolute;width:36px;height:36px;border-radius:50%;transform:translate(-50%,-50%);z-index:5;
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(var(--acc-rgb),.55);
  background:rgba(10,17,38,.82);color:var(--gold2);font-size:11px;font-weight:700;letter-spacing:.02em;
  box-shadow:0 0 0 0 rgba(var(--acc-rgb),.45);transition:.3s var(--ease);backdrop-filter:blur(4px)}
.hotspot::after{content:"";position:absolute;inset:-7px;border-radius:50%;border:1px solid rgba(var(--acc-rgb),.28);animation:hsPulse 2.6s infinite}
.hotspot:hover{transform:translate(-50%,-50%) scale(1.14);background:rgba(var(--acc-rgb),.22)}
.hotspot.found{background:linear-gradient(135deg,var(--gold2),var(--gold));color:#241A05;border-color:transparent;box-shadow:0 0 24px rgba(var(--acc-rgb),.5)}
.hotspot.found::after{display:none}
@keyframes hsPulse{0%{transform:scale(.9);opacity:.9}70%{transform:scale(1.5);opacity:0}100%{opacity:0}}
.stage-tip{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);font-size:10.5px;color:var(--faint);letter-spacing:.08em;white-space:nowrap;z-index:6}
.discover-panel{padding:clamp(16px,2vw,24px);display:flex;flex-direction:column;gap:14px;border-radius:22px;background:linear-gradient(165deg,rgba(18,27,56,.78),rgba(8,13,30,.9));border:1px solid rgba(255,255,255,.09);min-height:0}
.dp-head{display:flex;align-items:flex-end;justify-content:space-between;gap:10px}
.dp-head span{font-size:11px;letter-spacing:.16em;color:var(--dim)}
.dp-head b{font-family:var(--serif);font-size:22px;color:var(--acc);line-height:1}
.dp-head b em{font-style:normal;font-size:30px}
.dp-bar{height:5px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden}
.dp-bar i{display:block;height:100%;width:0;border-radius:4px;background:linear-gradient(90deg,var(--acc),var(--teal));transition:.5s var(--ease)}
.use-list{list-style:none;display:flex;flex-direction:column;gap:8px;overflow-y:auto;min-height:110px;max-height:270px;padding-right:3px}
.use-list li{display:flex;gap:10px;align-items:flex-start;padding:9px 11px;border-radius:11px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.07);animation:popIn .4s var(--ease)}
.use-list li .ui{font-size:17px;line-height:1.3;flex:none}
.use-list li b{display:block;font-size:12.5px;margin-bottom:2px}
.use-list li p{font-size:11px;line-height:1.6;color:var(--dim)}
.use-list li.custom{border-color:rgba(79,224,208,.3);background:rgba(79,224,208,.06)}
@keyframes popIn{from{opacity:0;transform:translateY(8px) scale(.97)}to{opacity:1;transform:none}}
.use-empty{font-size:11.5px;color:var(--faint);line-height:1.9;padding:10px 4px}
.custom-use{margin-top:auto;padding-top:12px;border-top:1px dashed rgba(255,255,255,.12);opacity:.45;pointer-events:none;transition:.3s}
.custom-use.on{opacity:1;pointer-events:auto}
.custom-use label{display:block;font-size:10.5px;letter-spacing:.12em;color:var(--acc);margin-bottom:7px}
.custom-use .row{display:flex;gap:7px}
.custom-use input{flex:1;min-width:0;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13);border-radius:9px;padding:9px 11px;font-size:12px;color:var(--ink)}
.custom-use input::placeholder{color:var(--faint)}
.custom-use button{width:38px;border-radius:9px;background:rgba(var(--acc-rgb),.16);border:1px solid rgba(var(--acc-rgb),.3);color:var(--acc);font-size:17px;line-height:1}
.ch-foot-note{margin-top:14px;font-size:11.5px;color:var(--faint);line-height:1.8;display:flex;align-items:center;gap:8px}
.ch-foot-note::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--acc);flex:none;box-shadow:0 0 10px var(--acc)}

/* ---------- act 2 objects ---------- */
.obj-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(10px,1.4vw,16px)}
.obj-card{perspective:1400px;height:clamp(300px,43vh,380px);cursor:pointer}
.flip-inner{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .75s var(--ease)}
.obj-card.flipped .flip-inner{transform:rotateY(180deg)}
.face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:18px;overflow:hidden;
  border:1px solid rgba(255,255,255,.1);background:linear-gradient(170deg,rgba(19,28,58,.9),rgba(8,13,30,.96));
  display:flex;flex-direction:column;padding:16px 16px 14px}
.face.back{transform:rotateY(180deg);border-color:rgba(var(--acc-rgb),.35);background:linear-gradient(170deg,rgba(30,33,44,.96),rgba(10,14,28,.98))}
.obj-art{height:50%;display:flex;align-items:center;justify-content:center;margin:2px 0 6px}
.obj-art svg{width:100%;height:100%;max-height:185px}
.obj-name{font-size:14px;font-weight:700;letter-spacing:.04em}
.obj-q{font-size:11px;line-height:1.65;color:var(--dim);margin-top:4px;flex:1}
.obj-btn{margin-top:auto;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px;border-radius:9px;
  border:1px solid rgba(var(--acc-rgb),.28);background:rgba(var(--acc-rgb),.08);color:var(--acc);font-size:11px;font-weight:600;transition:.22s}
.obj-card:hover .obj-btn{background:rgba(var(--acc-rgb),.16)}
.obj-badge{position:absolute;left:12px;top:12px;font-size:9px;letter-spacing:.12em;color:var(--faint);border:1px solid rgba(255,255,255,.11);padding:3px 7px;border-radius:99px;z-index:2}
.obj-card.explored .obj-badge{color:var(--acc);border-color:rgba(var(--acc-rgb),.3)}
.alt-label{font-size:9.5px;letter-spacing:.12em;color:var(--acc);margin-bottom:6px}
.alt-title{font-family:var(--serif);font-size:16px;line-height:1.35;font-weight:700;margin-bottom:6px}
.alt-desc{font-size:11px;line-height:1.7;color:var(--dim);flex:1}
.alt-btns{display:flex;gap:7px;margin-top:auto}
.alt-btns button{flex:1;padding:7px 4px;border-radius:8px;font-size:10.5px;border:1px solid rgba(255,255,255,.13);color:var(--dim);transition:.2s}
.alt-btns button:hover{color:var(--ink);border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.05)}
.alt-btns button.next{color:var(--acc);border-color:rgba(var(--acc-rgb),.28);background:rgba(var(--acc-rgb),.08)}
.vote-panel{margin-top:16px;padding:16px 20px;border-radius:16px;background:linear-gradient(165deg,rgba(18,27,56,.78),rgba(8,13,30,.9));border:1px solid rgba(255,255,255,.09);
  opacity:0;transform:translateY(10px);transition:.5s var(--ease);pointer-events:none}
.vote-panel.show{opacity:1;transform:none;pointer-events:auto}
.vp-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.vp-head h4{font-size:12.5px;letter-spacing:.05em}
.vp-head span{font-size:10.5px;color:var(--faint)}
.vote-rows{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.vote-item{padding:10px 12px;border-radius:11px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.025);cursor:pointer;transition:.2s}
.vote-item:hover{border-color:rgba(var(--acc-rgb),.3);background:rgba(var(--acc-rgb),.06)}
.vi-top{display:flex;align-items:center;justify-content:space-between;font-size:11.5px;margin-bottom:7px}
.vi-top b{font-family:var(--serif);color:var(--acc);font-size:15px}
.vi-bar{height:4px;border-radius:3px;background:rgba(255,255,255,.08);overflow:hidden}
.vi-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--teal));transition:.4s var(--ease)}

/* ---------- act 3 detective ---------- */
.detective-layout{display:grid;grid-template-columns:1.55fr .85fr;gap:clamp(12px,1.6vw,20px);align-items:start}
.room-panel{position:relative;border-radius:20px;overflow:hidden;border:1px solid rgba(255,255,255,.1);background:#0A1225;box-shadow:0 30px 70px -40px #000}
.room-svg{width:100%;display:block}
.room-hotspot{position:absolute;width:30px;height:30px;border-radius:50%;transform:translate(-50%,-50%);z-index:6;
  display:flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.5);
  background:rgba(8,14,32,.8);color:#fff;font-size:11px;transition:.25s;box-shadow:0 0 0 0 rgba(255,255,255,.3)}
.room-hotspot::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:1px solid rgba(255,255,255,.35);animation:hsPulse 2.4s infinite}
.room-hotspot:hover{transform:translate(-50%,-50%) scale(1.18);background:rgba(var(--acc-rgb),.35);border-color:var(--acc)}
.room-hotspot.found{background:var(--acc);color:#221802;border-color:transparent;box-shadow:0 0 22px rgba(var(--acc-rgb),.5)}
.room-hotspot.found::after{display:none}
.zoom-ring{position:absolute;width:30px;height:30px;border-radius:50%;transform:translate(-50%,-50%);border:2px solid var(--acc);pointer-events:none;z-index:5;animation:zoomRing .75s var(--ease) forwards}
@keyframes zoomRing{to{width:190px;height:190px;opacity:0}}
.room-tip{position:absolute;left:14px;top:12px;z-index:7;display:flex;align-items:center;gap:7px;font-size:10.5px;color:rgba(255,255,255,.75);
  background:rgba(6,10,24,.62);border:1px solid rgba(255,255,255,.16);padding:5px 10px;border-radius:99px;backdrop-filter:blur(8px)}
.room-tip i{width:5px;height:5px;border-radius:50%;background:var(--acc);box-shadow:0 0 9px var(--acc);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.3;transform:scale(.7)}}
.prob-detail{position:absolute;left:12px;right:12px;bottom:12px;z-index:8;padding:13px 15px;border-radius:13px;background:rgba(8,14,32,.9);
  border:1px solid rgba(var(--acc-rgb),.35);backdrop-filter:blur(14px);display:flex;gap:12px;align-items:flex-start;
  transform:translateY(16px);opacity:0;pointer-events:none;transition:.3s var(--ease)}
.prob-detail.show{transform:none;opacity:1;pointer-events:auto}
.pd-ic{width:36px;height:36px;border-radius:10px;background:rgba(var(--acc-rgb),.14);border:1px solid rgba(var(--acc-rgb),.25);display:flex;align-items:center;justify-content:center;font-size:18px;flex:none}
.pd-body{flex:1;min-width:0}
.pd-body h4{font-size:13px;margin-bottom:3px}
.pd-body p{font-size:10.5px;line-height:1.6;color:var(--dim)}
.pd-body p b{color:var(--acc);font-weight:600}
.pd-body p.why{margin-top:3px;color:var(--faint)}
.pd-btn{padding:7px 11px;border-radius:8px;background:rgba(var(--acc-rgb),.14);border:1px solid rgba(var(--acc-rgb),.3);color:var(--acc);font-size:10.5px;font-weight:600;flex:none}
.detective-panel{padding:15px 16px;border-radius:20px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.94));border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:11px}
.dp2-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.dp2-top span{font-size:11px;letter-spacing:.1em;color:var(--dim)}
.dp2-top b{font-family:var(--serif);font-size:18px;color:var(--acc)}
.dp2-top b em{font-style:normal;font-size:25px}
.obs-row{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.07)}
.obs-row button{font-size:10.5px;color:var(--acc);padding:4px 8px;border-radius:6px;border:1px solid rgba(var(--acc-rgb),.25);background:rgba(var(--acc-rgb),.08);white-space:nowrap}
.obs-row span{font-family:var(--serif);font-size:16px;color:var(--ink);letter-spacing:.06em;margin-left:auto}
.prob-list{display:flex;flex-direction:column;gap:6px;max-height:220px;overflow-y:auto;min-height:80px;padding-right:2px}
.prob-card{display:flex;gap:8px;align-items:center;padding:8px 9px;border-radius:9px;border:1px solid rgba(255,255,255,.07);background:rgba(255,255,255,.025);cursor:pointer;transition:.2s;text-align:left}
.prob-card:hover{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.16)}
.prob-card.selected{border-color:rgba(var(--acc-rgb),.55);background:rgba(var(--acc-rgb),.08);box-shadow:inset 0 0 0 1px rgba(var(--acc-rgb),.2)}
.prob-card .pi{font-size:15px;flex:none}
.prob-card .pt{flex:1;min-width:0}
.prob-card .pt b{display:block;font-size:11px;line-height:1.45;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prob-card .pt span{font-size:9px;color:var(--faint)}
.prob-card .pc{width:15px;height:15px;border-radius:50%;border:1px solid rgba(255,255,255,.2);flex:none;display:flex;align-items:center;justify-content:center;font-size:9px}
.prob-card.selected .pc{background:var(--acc);border-color:var(--acc);color:#211805}
.prob-empty{font-size:10.5px;line-height:1.8;color:var(--faint);padding:6px 2px}
.custom-prob{display:flex;gap:6px;padding-top:9px;border-top:1px dashed rgba(255,255,255,.11)}
.custom-prob input{flex:1;min-width:0;background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:8px 9px;font-size:11px}
.custom-prob input::placeholder{color:var(--faint)}
.custom-prob button{width:32px;border-radius:8px;background:rgba(var(--acc-rgb),.13);border:1px solid rgba(var(--acc-rgb),.28);color:var(--acc);font-size:15px}
.select-hint{font-size:10px;line-height:1.65;color:var(--faint);padding-top:2px}
.select-hint.ok{color:var(--acc)}
.select-hint b{color:var(--acc)}

/* ---------- act 4 ideas ---------- */
.problem-banner{display:flex;align-items:center;gap:12px;padding:11px 15px;border-radius:12px;background:rgba(var(--acc-rgb),.06);border:1px solid rgba(var(--acc-rgb),.2);margin-bottom:14px}
.problem-banner span{font-size:9.5px;letter-spacing:.14em;color:var(--acc);flex:none}
.problem-banner b{font-size:13px;font-weight:600;flex:1;min-width:0;line-height:1.5}
.problem-banner button{font-size:10px;color:var(--dim);border:1px solid rgba(255,255,255,.13);padding:4px 9px;border-radius:99px;flex:none}
.idea-layout{display:grid;grid-template-columns:280px 1fr;gap:clamp(12px,1.6vw,20px);align-items:start}
.angle-panel{padding:15px;border-radius:18px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.94));border:1px solid rgba(255,255,255,.09)}
.ap-title{font-size:11px;letter-spacing:.14em;color:var(--dim);margin-bottom:10px;display:flex;justify-content:space-between;align-items:center}
.dice{width:100%;padding:11px;border-radius:11px;border:1px solid rgba(var(--acc-rgb),.32);background:linear-gradient(135deg,rgba(var(--acc-rgb),.16),rgba(var(--acc-rgb),.05));
  color:var(--acc);font-size:12.5px;font-weight:600;display:flex;align-items:center;justify-content:center;gap:8px;transition:.24s;margin-bottom:11px}
.dice:hover{background:linear-gradient(135deg,rgba(var(--acc-rgb),.28),rgba(var(--acc-rgb),.09));transform:translateY(-1px)}
.dice.rolling{animation:diceRoll .5s var(--ease)}
@keyframes diceRoll{50%{transform:rotate(8deg) scale(.94)}}
.angle-grid{display:grid;gap:6px}
.angle-btn{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:9px;border:1px solid rgba(255,255,255,.07);background:rgba(255,255,255,.025);text-align:left;font-size:11px;color:var(--dim);transition:.2s}
.angle-btn:hover{color:var(--ink);background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.15)}
.angle-btn.active{color:var(--acc);border-color:rgba(var(--acc-rgb),.4);background:rgba(var(--acc-rgb),.09)}
.angle-btn .ai{font-size:14px;flex:none;width:18px;text-align:center}
.idea-main{display:flex;flex-direction:column;gap:12px;min-width:0}
.energy{display:flex;align-items:center;gap:10px;padding:0 2px}
.energy span{font-size:10px;letter-spacing:.12em;color:var(--faint);flex:none}
.ebar{flex:1;height:5px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden}
.ebar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--teal));transition:.5s var(--ease)}
.energy b{font-family:var(--serif);font-size:13px;color:var(--acc);width:38px;text-align:right}
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.slot{position:relative;min-height:156px;padding:13px;border-radius:14px;border:1px dashed rgba(255,255,255,.15);background:rgba(255,255,255,.018);display:flex;flex-direction:column;transition:.3s var(--ease)}
.slot.filled{border-style:solid;border-color:rgba(255,255,255,.12);background:linear-gradient(165deg,rgba(20,29,60,.9),rgba(8,13,30,.95))}
.slot.picked{border-color:rgba(var(--acc-rgb),.7);box-shadow:0 0 0 1px rgba(var(--acc-rgb),.25),0 14px 40px -22px rgba(var(--acc-rgb),.6);background:linear-gradient(165deg,rgba(var(--acc-rgb),.1),rgba(8,13,30,.96))}
.slot-top{display:flex;align-items:center;gap:6px;margin-bottom:8px}
.slot-top .sn{font-family:var(--serif);font-size:16px;color:var(--acc);opacity:.8}
.slot-top em{font-style:normal;font-size:9px;letter-spacing:.08em;color:var(--dim);border:1px solid rgba(255,255,255,.12);padding:2px 6px;border-radius:99px}
.slot-top .sx{margin-left:auto;width:20px;height:20px;border-radius:50%;color:var(--faint);font-size:13px;display:flex;align-items:center;justify-content:center}
.slot-top .sx:hover{background:rgba(255,255,255,.07);color:var(--ink)}
.slot p{font-size:12.5px;line-height:1.65;flex:1;word-break:break-word}
.slot .s-empty{color:var(--faint);font-size:11px;line-height:1.8}
.slot .pick{margin-top:10px;padding:6px;border-radius:7px;border:1px solid rgba(var(--acc-rgb),.28);background:rgba(var(--acc-rgb),.08);color:var(--acc);font-size:10px;font-weight:600;opacity:.55;transition:.2s}
.slot .pick:hover{opacity:1}
.slot.picked .pick{opacity:1;background:var(--acc);color:#211805;border-color:transparent}
.composer{padding:12px 14px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09)}
.composer .prompt{font-size:11.5px;line-height:1.7;color:var(--acc);margin-bottom:8px;min-height:19px}
.composer-row{display:flex;gap:8px}
.composer-row input{flex:1;min-width:0;padding:11px 13px;border-radius:9px;border:1px solid rgba(255,255,255,.14);background:rgba(255,255,255,.04);font-size:12.5px}
.composer-row input::placeholder{color:var(--faint)}
.composer-row button{padding:0 16px;border-radius:9px;background:linear-gradient(115deg,var(--acc2),var(--acc));color:#211805;font-size:11.5px;font-weight:700;white-space:nowrap}

/* ---------- act 5 lenses ---------- */
.lens-layout{display:grid;grid-template-columns:1fr 330px;gap:clamp(12px,1.6vw,20px);align-items:start}
.lens-main{display:flex;flex-direction:column;gap:12px;min-width:0}
.idea-focus{padding:15px 18px;border-radius:14px;background:linear-gradient(135deg,rgba(var(--acc-rgb),.1),rgba(255,255,255,.02));border:1px solid rgba(var(--acc-rgb),.25);position:relative;overflow:hidden}
.idea-focus::before{content:"我的想法";position:absolute;right:12px;top:9px;font-size:8.5px;letter-spacing:.2em;color:rgba(var(--acc-rgb),.5)}
.idea-focus p{font-family:var(--serif);font-size:clamp(15px,1.5vw,19px);line-height:1.7}
.lens-row{display:grid;grid-template-columns:repeat(4,1fr);gap:9px}
.lens-btn{padding:12px 8px 10px;border-radius:13px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.025);display:flex;flex-direction:column;align-items:center;gap:6px;transition:.26s var(--ease);position:relative;overflow:hidden}
.lens-btn::after{content:"";position:absolute;inset:0;border-radius:13px;background:radial-gradient(circle at 50% 30%,var(--lc),transparent 70%);opacity:0;transition:.3s}
.lens-btn:hover{transform:translateY(-2px);border-color:rgba(255,255,255,.2)}
.lens-btn.active{border-color:var(--lc);box-shadow:0 0 0 1px var(--lc),0 14px 34px -20px var(--lc);background:rgba(255,255,255,.04)}
.lens-btn.active::after{opacity:.12}
.lens-ic{width:40px;height:40px;border-radius:50%;border:1px solid var(--lc);display:flex;align-items:center;justify-content:center;font-size:18px;background:rgba(0,0,0,.2);position:relative;z-index:1;color:var(--lc)}
.lens-btn span{font-size:11.5px;font-weight:600;position:relative;z-index:1}
.lens-btn em{font-style:normal;font-size:8.5px;color:var(--faint);position:relative;z-index:1}
.lens-panel{padding:14px 16px;border-radius:15px;border:1px solid rgba(255,255,255,.09);background:linear-gradient(165deg,rgba(18,27,56,.82),rgba(8,13,30,.95));min-height:190px;display:flex;flex-direction:column;gap:9px;transition:border-color .3s}
.lens-panel.active{border-color:rgba(255,255,255,.18)}
.lp-q{font-family:var(--serif);font-size:clamp(14px,1.35vw,17px);line-height:1.65;color:var(--ink)}
.lp-tips{display:flex;flex-wrap:wrap;gap:6px}
.lp-tips span{font-size:10px;color:var(--dim);border:1px dashed rgba(255,255,255,.15);padding:4px 8px;border-radius:7px;cursor:pointer;transition:.2s}
.lp-tips span:hover{color:var(--ink);border-color:var(--lc);background:rgba(255,255,255,.04)}
.lens-panel textarea{width:100%;min-height:58px;resize:vertical;border-radius:9px;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.04);padding:9px 11px;font-size:12px;line-height:1.6}
.lens-panel textarea::placeholder{color:var(--faint)}
.lp-actions{display:flex;align-items:center;gap:10px;justify-content:space-between}
.lp-actions .progress{font-size:10px;color:var(--faint)}
.lp-actions .progress b{color:var(--lc,var(--acc))}
.lp-actions button{padding:8px 14px;border-radius:8px;background:var(--lc,var(--acc));color:#1a1204;font-size:11px;font-weight:700}
.upgrade-side{padding:15px;border-radius:18px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:11px}
.us-head{display:flex;align-items:center;justify-content:space-between;font-size:11px;letter-spacing:.1em;color:var(--dim)}
.us-head b{font-family:var(--serif);font-size:16px;color:var(--acc)}
.upgrade-list{display:flex;flex-direction:column;gap:6px;max-height:150px;overflow-y:auto;min-height:54px}
.up-item{display:flex;gap:7px;align-items:flex-start;padding:7px 9px;border-radius:8px;background:rgba(255,255,255,.035);border-left:2px solid var(--uc,var(--acc));font-size:10.5px;line-height:1.55;animation:popIn .35s var(--ease)}
.up-item b{color:var(--uc,var(--acc));font-weight:600;flex:none}
.ba{border-top:1px dashed rgba(255,255,255,.11);padding-top:9px}
.ba span{display:block;font-size:9px;letter-spacing:.14em;color:var(--faint);margin-bottom:4px}
.ba p{font-size:11px;line-height:1.7;color:var(--dim);margin-bottom:8px}
.ba p:last-child{margin-bottom:0;color:var(--ink)}
.ba p.after{color:var(--acc)}
.to-proposal{margin-top:2px;padding:10px;border-radius:9px;background:linear-gradient(115deg,var(--acc2),var(--acc));color:#211805;font-size:11.5px;font-weight:700;opacity:.4;pointer-events:none;transition:.3s}
.to-proposal.on{opacity:1;pointer-events:auto}

/* ---------- act 6 proposal ---------- */
.proposal-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:clamp(12px,1.6vw,20px);align-items:start}
.prop-form{display:flex;flex-direction:column;gap:10px}
.field{display:flex;flex-direction:column;gap:5px}
.field label{font-size:10px;letter-spacing:.14em;color:var(--acc);display:flex;align-items:center;gap:6px}
.field label b{font-family:var(--serif);font-size:12px;color:var(--faint);font-weight:400}
.field input,.field textarea{width:100%;padding:9px 11px;border-radius:9px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.035);font-size:12.5px;line-height:1.6;transition:.2s}
.field textarea{min-height:54px;resize:vertical}
.field input:focus,.field textarea:focus{outline:none;border-color:rgba(var(--acc-rgb),.55);background:rgba(var(--acc-rgb),.05);box-shadow:0 0 0 3px rgba(var(--acc-rgb),.08)}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field .fh{font-size:9.5px;color:var(--faint);line-height:1.5}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.who-chips{display:flex;flex-wrap:wrap;gap:6px}
.who-chips button{padding:6px 11px;border-radius:99px;border:1px solid rgba(255,255,255,.13);font-size:10.5px;color:var(--dim);transition:.2s}
.who-chips button:hover{border-color:rgba(255,255,255,.28);color:var(--ink)}
.who-chips button.on{background:rgba(var(--acc-rgb),.14);border-color:rgba(var(--acc-rgb),.45);color:var(--acc)}
.draw-panel{position:sticky;top:0;border-radius:18px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(165deg,rgba(18,27,56,.82),rgba(8,13,30,.95));padding:12px;display:flex;flex-direction:column;gap:9px}
.draw-head{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.draw-head>span{font-size:10.5px;letter-spacing:.1em;color:var(--dim)}
.draw-tools{display:flex;align-items:center;gap:5px;flex-wrap:wrap}
.colors{display:flex;gap:4px}
.color{width:17px;height:17px;border-radius:50%;border:1px solid rgba(255,255,255,.25);position:relative}
.color.on{box-shadow:0 0 0 2px var(--bg),0 0 0 3px var(--ink)}
.tool{width:26px;height:26px;border-radius:7px;border:1px solid rgba(255,255,255,.12);color:var(--dim);display:flex;align-items:center;justify-content:center;font-size:12px;transition:.2s}
.tool:hover{color:var(--ink);border-color:rgba(255,255,255,.28);background:rgba(255,255,255,.05)}
.tool.on{color:var(--acc);border-color:rgba(var(--acc-rgb),.4);background:rgba(var(--acc-rgb),.1)}
.canvas-wrap{position:relative;border-radius:11px;overflow:hidden;background:
  linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px),#0B1226;
  background-size:24px 24px,24px 24px,auto;border:1px solid rgba(255,255,255,.1);aspect-ratio:1000/620}
#drawCanvas{width:100%;height:100%;display:block;touch-action:none;cursor:crosshair}
.canvas-hint{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-size:11px;color:rgba(255,255,255,.18);pointer-events:none;letter-spacing:.08em;text-align:center;padding:20px}
.canvas-hint.hide{display:none}
.draw-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:9.5px;color:var(--faint)}
.proposal-cta{margin-top:14px;display:flex;align-items:center;gap:16px;padding:12px 16px;border-radius:14px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09);flex-wrap:wrap}
.prop-progress{flex:1;min-width:180px}
.prop-progress .pt{display:flex;justify-content:space-between;font-size:10px;color:var(--faint);margin-bottom:6px}
.prop-progress .pt b{color:var(--acc);font-family:var(--serif);font-size:13px}
.pbar{height:5px;border-radius:4px;background:rgba(255,255,255,.08);overflow:hidden}
.pbar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc),var(--teal));transition:.5s var(--ease)}
.proposal-cta .btn{padding:12px 22px}

/* ---------- act 7 stage ---------- */
.stage-wrap{position:relative;border-radius:22px;overflow:hidden;border:1px solid rgba(245,196,81,.2);min-height:clamp(340px,46vh,480px);
  background:radial-gradient(800px 400px at 50% -10%,rgba(245,196,81,.16),transparent 60%),linear-gradient(180deg,#170F1B,#0A0B18 70%)}
.curtain{position:absolute;top:0;bottom:0;width:18%;z-index:1;background:
  repeating-linear-gradient(90deg,rgba(82,20,32,.95) 0 12px,rgba(52,12,22,.95) 12px 26px,rgba(98,26,40,.95) 26px 38px);
  box-shadow:inset 0 0 80px rgba(0,0,0,.7)}
.curtain.l{left:0;border-radius:22px 0 0 22px}
.curtain.r{right:0;border-radius:0 22px 22px 0}
.curtain::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.55),transparent 40%,transparent 60%,rgba(0,0,0,.55))}
.spot{position:absolute;left:50%;top:-10%;width:70%;height:120%;transform:translateX(-50%);z-index:0;
  background:conic-gradient(from 180deg at 50% 0%,transparent 42%,rgba(255,227,166,.15) 50%,transparent 58%);
  filter:blur(18px);pointer-events:none}
.stage-floor{position:absolute;left:0;right:0;bottom:0;height:22%;z-index:0;background:linear-gradient(180deg,transparent,rgba(245,196,81,.07))}
.stage-content{position:relative;z-index:3;padding:clamp(14px,2.2vw,24px) clamp(20px,5vw,70px);display:flex;flex-direction:column;min-height:clamp(340px,46vh,480px)}
.stage-top{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:10.5px;letter-spacing:.1em;color:var(--dim);padding-bottom:12px;border-bottom:1px solid rgba(245,196,81,.16)}
.stage-top span b{color:var(--gold);font-family:var(--serif);font-size:14px}
.stage-top .who{color:var(--gold2);font-size:12px}
.speech{flex:1;display:flex;flex-direction:column;justify-content:center;gap:4px;padding:8px 0}
.speech p{font-family:var(--serif);font-size:clamp(14px,1.6vw,20px);line-height:1.62;color:rgba(247,242,230,.66);transition:.4s}
.speech p b{color:var(--gold2);font-weight:700;border-bottom:1px dashed rgba(245,196,81,.4);padding-bottom:1px}
.speech p.lead{color:var(--ink);font-size:clamp(16px,1.8vw,22px)}
.stage-controls{display:flex;align-items:center;gap:clamp(12px,2vw,24px);padding-top:8px;border-top:1px solid rgba(245,196,81,.16);flex-wrap:wrap}
.timer{display:flex;align-items:center;gap:12px}
.timer-ring{position:relative;width:74px;height:74px;flex:none}
.timer-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.timer-ring .tr-bg{fill:none;stroke:rgba(255,255,255,.1);stroke-width:5}
.timer-ring .tr-fg{fill:none;stroke:var(--gold);stroke-width:5;stroke-linecap:round;stroke-dasharray:339.29;stroke-dashoffset:0;transition:stroke-dashoffset .3s linear,stroke .3s}
.timer-num{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:22px;color:var(--ink)}
.timer-num.warn{color:var(--coral);animation:numPulse .8s infinite}
@keyframes numPulse{50%{transform:scale(1.08)}}
.timer-btns{display:flex;flex-direction:column;gap:5px}
.timer-btns button{font-size:10.5px;padding:6px 11px;border-radius:7px;border:1px solid rgba(255,255,255,.14);color:var(--dim);transition:.2s}
.timer-btns button:hover{color:var(--ink);border-color:rgba(255,255,255,.3)}
.timer-btns button.main{background:linear-gradient(115deg,var(--gold2),var(--gold));color:#211805;border-color:transparent;font-weight:700}
.applause{display:flex;align-items:center;gap:10px;flex:1;min-width:200px}
.applause-btn{width:64px;height:64px;border-radius:50%;border:1px solid rgba(245,196,81,.4);background:radial-gradient(circle at 35% 30%,rgba(255,227,166,.25),rgba(245,196,81,.08));font-size:28px;display:flex;align-items:center;justify-content:center;transition:.18s;flex:none;position:relative}
.applause-btn:hover{transform:scale(1.06)}
.applause-btn:active{transform:scale(.9)}
.applause-btn::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1px solid rgba(245,196,81,.3);animation:hsPulse 2.4s infinite}
.applause-meter{flex:1;min-width:100px}
.applause-meter .am-top{display:flex;justify-content:space-between;font-size:9.5px;color:var(--faint);margin-bottom:5px}
.applause-meter .am-top b{color:var(--gold);font-family:var(--serif);font-size:14px}
.ambar{height:7px;border-radius:4px;background:rgba(255,255,255,.09);overflow:hidden}
.ambar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--coral));transition:.25s}
.applause-particles{position:absolute;inset:0;pointer-events:none;z-index:5;overflow:hidden}
.applause-particles span{position:absolute;font-size:18px;animation:apFloat 1.2s ease-out forwards}
@keyframes apFloat{to{transform:translate(var(--dx),-120px) rotate(var(--rot));opacity:0}}
.stage-rules{margin-top:10px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.rule{padding:8px 12px;border-radius:11px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09);display:flex;gap:10px;align-items:flex-start}
.rule .ri{font-size:18px;flex:none}
.rule b{display:block;font-size:11.5px;margin-bottom:3px;color:var(--gold2)}
.rule p{font-size:10.5px;line-height:1.65;color:var(--dim)}

/* ---------- act 8 finale ---------- */
.finale{text-align:center;display:flex;flex-direction:column;align-items:center;gap:clamp(8px,1.35vh,15px);padding:2px 0 6px}
.badge-stage{position:relative;width:clamp(220px,27vh,290px);aspect-ratio:1;display:flex;align-items:center;justify-content:center;flex:none}
.badge-rays{position:absolute;inset:-30%;background:conic-gradient(from 0deg,transparent 0deg,rgba(245,196,81,.18) 8deg,transparent 16deg,transparent 24deg,rgba(245,196,81,.12) 32deg,transparent 40deg);
  border-radius:50%;animation:spin 28s linear infinite;filter:blur(1px)}
.badge{position:relative;width:78%;aspect-ratio:1;border-radius:50%;padding:5px;background:conic-gradient(from 210deg,#FFE3A6,#D89A2E,#FFE3A6,#B87A18,#FFE3A6);box-shadow:0 24px 60px -20px rgba(245,196,81,.45),0 0 0 10px rgba(245,196,81,.05)}
.badge-inner{width:100%;height:100%;border-radius:50%;background:radial-gradient(circle at 36% 26%,#1B2340,#0A1024 68%);border:1px solid rgba(255,227,166,.4);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;position:relative;overflow:hidden}
.badge-inner::after{content:"";position:absolute;inset:-40%;background:linear-gradient(115deg,transparent 40%,rgba(255,255,255,.18) 50%,transparent 60%);transform:rotate(20deg);animation:sheen 5s infinite}
@keyframes sheen{0%,70%{transform:translateX(-60%) rotate(20deg)}100%{transform:translateX(60%) rotate(20deg)}}
.b-kicker{font-size:7px;letter-spacing:.28em;color:var(--gold);margin-top:6%}
.b-star{font-size:clamp(26px,4vh,38px);color:var(--gold);line-height:1;filter:drop-shadow(0 0 12px rgba(245,196,81,.6))}
.badge-inner b{font-family:var(--serif);font-size:clamp(17px,2.2vh,23px);letter-spacing:.1em;color:var(--gold2);line-height:1.2}
.badge-inner .bn{font-size:clamp(11px,1.4vh,13px);color:var(--ink);max-width:80%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.b-date{font-size:7.5px;letter-spacing:.14em;color:var(--faint)}
.finale h2{font-family:var(--serif);font-size:clamp(25px,3vw,40px);line-height:1.25}
.finale h2 em{font-style:normal;color:var(--gold)}
.finale .sub{font-size:clamp(11.8px,1vw,13.5px);color:var(--dim);line-height:1.8;max-width:640px}
.journey{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.08);border-radius:14px;overflow:hidden;width:min(760px,100%)}
.jstep{background:rgba(10,16,34,.92);padding:9px 8px;display:flex;flex-direction:column;align-items:center;gap:4px}
.jstep .ji{font-size:20px}
.jstep b{font-size:11.5px;color:var(--gold2)}
.jstep span{font-size:9.5px;color:var(--faint);line-height:1.5;text-align:center}
.reflect{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:min(900px,100%)}
.reflect div{padding:9px 10px;border-radius:11px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);text-align:left}
.reflect b{display:block;font-size:9px;letter-spacing:.14em;color:var(--gold);margin-bottom:5px}
.reflect p{font-size:10.5px;line-height:1.65;color:var(--dim)}
.homework{display:flex;align-items:center;gap:12px;padding:9px 14px;border-radius:13px;border:1px dashed rgba(245,196,81,.35);background:rgba(245,196,81,.05);width:min(760px,100%);text-align:left}
.homework .hi{font-size:24px;flex:none}
.homework b{display:block;font-size:11.5px;color:var(--gold2);margin-bottom:3px}
.homework p{font-size:10.5px;line-height:1.65;color:var(--dim)}
.final-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-top:0}
.final-quote{font-family:var(--serif);font-size:clamp(11px,0.95vw,12.5px);line-height:1.75;color:var(--dim);max-width:760px;border-top:1px solid rgba(255,255,255,.08);padding-top:9px}
.final-quote em{font-style:normal;color:var(--gold2)}

/* ---------- notes ---------- */
.notes{position:fixed;top:0;right:0;bottom:0;width:min(420px,92vw);z-index:90;background:linear-gradient(180deg,#0C142C,#070C1B);
  border-left:1px solid rgba(245,196,81,.2);box-shadow:-30px 0 80px rgba(0,0,0,.55);transform:translateX(102%);transition:transform .42s var(--ease);display:flex;flex-direction:column}
.notes.open{transform:none}
.notes-head{padding:16px 18px;border-bottom:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;gap:10px;flex:none}
.notes-head b{font-family:var(--serif);font-size:17px;letter-spacing:.06em}
.notes-head span{font-size:9.5px;letter-spacing:.16em;color:var(--gold);display:block;margin-top:3px}
.notes-close{width:30px;height:30px;border-radius:50%;border:1px solid rgba(255,255,255,.14);color:var(--dim);display:flex;align-items:center;justify-content:center;font-size:16px}
.notes-close:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.notes-body{flex:1;overflow-y:auto;padding:16px 18px 24px}
.note-sched{display:grid;gap:3px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px dashed rgba(255,255,255,.12)}
.ns-item{display:flex;align-items:center;gap:8px;padding:5px 7px;border-radius:6px;font-size:10.5px;color:var(--faint);cursor:pointer}
.ns-item:hover{background:rgba(255,255,255,.04);color:var(--dim)}
.ns-item.on{background:rgba(245,196,81,.1);color:var(--gold)}
.ns-item b{font-family:var(--serif);width:22px;font-size:12px}
.ns-item span{flex:1}
.ns-item i{font-style:normal;font-size:9px}
.note-block h4{font-size:10px;letter-spacing:.16em;color:var(--gold);margin:15px 0 6px;display:flex;align-items:center;gap:6px}
.note-block h4::before{content:"";width:4px;height:4px;border-radius:50%;background:var(--gold)}
.note-block p,.note-block li{font-size:11.5px;line-height:1.85;color:var(--dim)}
.note-block ul{padding-left:16px;margin:2px 0}
.note-block li{margin:3px 0}
.note-block li b{color:var(--ink);font-weight:600}
.note-block .quote{padding:9px 11px;border-radius:8px;background:rgba(245,196,81,.06);border-left:2px solid var(--gold);font-size:11px;line-height:1.8;color:var(--gold2)}
.note-block .warn{padding:8px 10px;border-radius:8px;background:rgba(255,122,107,.07);border:1px solid rgba(255,122,107,.18);font-size:10.5px;color:#FFB3A8;line-height:1.7}
.notes-foot{padding:10px 18px;border-top:1px solid rgba(255,255,255,.08);font-size:9.5px;color:var(--faint);flex:none;display:flex;justify-content:space-between;gap:8px}
.notes-foot kbd{font-family:var(--sans);border:1px solid rgba(255,255,255,.14);border-bottom-width:2px;border-radius:4px;padding:1px 5px;font-size:9px;margin-right:3px}

/* ---------- curtain / modal / toast ---------- */
.curtain-trans{position:fixed;inset:0;z-index:95;pointer-events:none;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  background:radial-gradient(circle at 50% 50%,rgba(9,15,34,.96),rgba(3,6,14,.99));opacity:0;transition:opacity .22s}
.curtain-trans.show{opacity:1}
.curtain-trans b{font-family:var(--serif);font-size:clamp(30px,4.4vw,56px);color:var(--gold);letter-spacing:.1em}
.curtain-trans span{font-size:11px;letter-spacing:.4em;color:var(--dim)}
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px;background:rgba(2,5,13,.82);backdrop-filter:blur(14px)}
.modal.show{display:flex;animation:fadeIn .3s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-box{width:min(920px,100%);max-height:92dvh;overflow-y:auto;border-radius:20px;background:linear-gradient(180deg,#0E1732,#080D1E);border:1px solid rgba(245,196,81,.25);box-shadow:0 40px 120px rgba(0,0,0,.7);position:relative;animation:modalIn .4s var(--ease)}
@keyframes modalIn{from{opacity:0;transform:translateY(20px) scale(.985)}to{opacity:1;transform:none}}
.modal-x{position:absolute;right:14px;top:14px;width:32px;height:32px;border-radius:50%;border:1px solid rgba(255,255,255,.16);color:var(--dim);z-index:3;font-size:17px;display:flex;align-items:center;justify-content:center}
.modal-x:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.modal-actions{display:flex;gap:10px;justify-content:center;padding:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.08);position:sticky;bottom:0;background:linear-gradient(180deg,rgba(8,13,30,.6),#080D1E)}
.toast{position:fixed;left:50%;bottom:92px;transform:translate(-50%,20px);z-index:110;padding:11px 18px;border-radius:99px;
  background:rgba(12,20,44,.96);border:1px solid rgba(var(--acc-rgb),.3);color:var(--ink);font-size:12px;box-shadow:0 18px 50px rgba(0,0,0,.5);
  opacity:0;pointer-events:none;transition:.3s var(--ease);display:flex;align-items:center;gap:8px;max-width:90vw}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast i{font-style:normal;color:var(--acc)}
#fx{position:fixed;inset:0;z-index:95;pointer-events:none}

/* ---------- proposal card ---------- */
.prop-card{padding:clamp(22px,3.4vw,40px);background:linear-gradient(160deg,#FBF3DE,#F4E7C8);color:#1C2333;position:relative;overflow:hidden;border-radius:20px 20px 0 0}
.prop-card::before{content:"";position:absolute;inset:14px;border:1px solid rgba(160,120,40,.35);border-radius:12px;pointer-events:none}
.prop-card::after{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,rgba(245,196,81,.28),transparent 65%)}
.pc-head{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;position:relative;z-index:1;border-bottom:2px solid #1C2333;padding-bottom:12px;margin-bottom:16px}
.pc-brand{font-size:11px;letter-spacing:.22em;font-weight:800;color:#2B3A67}
.pc-brand small{display:block;font-size:8px;letter-spacing:.24em;color:#8A6212;margin-top:4px;font-weight:600}
.pc-no{font-size:8.5px;letter-spacing:.12em;color:#8A6212;text-align:right}
.prop-card h3{font-family:var(--serif);font-size:clamp(22px,3vw,34px);letter-spacing:.08em;color:#1C2333;line-height:1.2}
.pc-sub{font-size:11px;color:#6B748F;margin-top:5px;letter-spacing:.06em}
.pc-name{display:flex;align-items:flex-end;gap:10px;margin:16px 0 14px;padding-bottom:10px;border-bottom:1px dashed rgba(28,35,51,.22)}
.pc-name span{font-size:9.5px;color:#6B748F;letter-spacing:.1em}
.pc-name b{font-family:var(--serif);font-size:20px;letter-spacing:.06em}
.pc-name .date{margin-left:auto;font-size:9.5px;color:#8A93A6}
.pc-body{display:grid;grid-template-columns:1.05fr .95fr;gap:16px;position:relative;z-index:1}
.pc-fields{display:flex;flex-direction:column;gap:11px}
.pc-field label{display:block;font-size:8.5px;letter-spacing:.16em;color:#8A6212;font-weight:700;margin-bottom:3px}
.pc-field p{font-size:12px;line-height:1.7;color:#2B3A67}
.pc-field p b{color:#1C2333}
.pc-draw{border:1px solid rgba(160,120,40,.3);border-radius:9px;background:#FFFCF3;padding:7px;display:flex;flex-direction:column;min-height:180px}
.pc-draw label{font-size:8px;letter-spacing:.14em;color:#8A6212;font-weight:700;margin-bottom:4px}
.pc-draw .dwrap{flex:1;display:flex;align-items:center;justify-content:center;min-height:150px}
.pc-draw img{max-width:100%;max-height:240px;object-fit:contain}
.pc-draw .empty{font-size:10px;color:#B9B29E;letter-spacing:.1em}
.pc-foot{margin-top:16px;padding-top:10px;border-top:1px solid rgba(28,35,51,.18);display:flex;justify-content:space-between;gap:14px;position:relative;z-index:1;font-size:9px;color:#8A93A6;line-height:1.6}
.pc-stamp{position:absolute;right:clamp(18px,3vw,34px);bottom:clamp(18px,3vw,30px);width:88px;height:88px;border-radius:50%;border:2px solid rgba(197,46,46,.55);color:rgba(197,46,46,.7);
  display:flex;flex-direction:column;align-items:center;justify-content:center;transform:rotate(-12deg);font-size:9px;letter-spacing:.08em;font-weight:700;line-height:1.5;text-align:center;z-index:2}
.pc-stamp b{font-family:var(--serif);font-size:14px;letter-spacing:.06em}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .obj-grid{grid-template-columns:repeat(2,1fr)}
  .vote-rows{grid-template-columns:repeat(2,1fr)}
  .lens-layout{grid-template-columns:1fr}
  .upgrade-side{display:grid;grid-template-columns:1fr 1fr;gap:12px}
  .upgrade-side .ba{grid-column:1/-1;border-top:1px dashed rgba(255,255,255,.11);padding-top:9px}
  .upgrade-side .to-proposal{grid-column:1/-1}
  .proposal-layout{grid-template-columns:1fr}
  .draw-panel{position:static}
  .pc-body{grid-template-columns:1fr}
  .pc-draw{min-height:150px}
}
@media (max-width:980px){
  .pencil-layout{grid-template-columns:1fr}
  .pencil-stage{min-height:340px;order:1}
  .discover-panel{order:2}
  .use-list{max-height:none;display:grid;grid-template-columns:1fr 1fr}
  .detective-layout{grid-template-columns:1fr}
  .idea-layout{grid-template-columns:1fr}
  .angle-grid{grid-template-columns:1fr 1fr}
  .slots{grid-template-columns:1fr}
  .slot{min-height:0}
  .cover-grid{grid-template-columns:1fr;gap:0;padding-bottom:110px}
  .portal{display:none}
  .cover-copy{max-width:100%}
  .journey{grid-template-columns:repeat(2,1fr)}
  .reflect{grid-template-columns:1fr}
}
@media (max-width:760px){
  .topbar{height:54px;gap:8px;padding:0 12px}
  #deck{padding-top:54px;padding-bottom:64px}
  .ch{inset:54px 0 64px 0;padding:16px 14px 26px}
  .tb-brand small,.tb-chapter i,.tb-sep,.tb-btn span{display:none}
  .tb-btn{padding:8px}
  .bottombar{height:64px;gap:8px;padding:0 10px}
  .dots{display:none}
  .bb-next{padding:0 12px;height:40px;flex:1;justify-content:space-between}
  .bb-next b{font-size:11.5px;max-width:150px}
  .cover-grid{padding:30px 22px 110px}
  .cover-copy h1{font-size:clamp(38px,11vw,58px)}
  .cover-foot{left:22px;right:22px;font-size:8.5px}
  .cover-foot .kbd{display:none}
  .ch-head h2{font-size:clamp(25px,7vw,36px)}
  .obj-grid{grid-template-columns:1fr 1fr}
  .obj-card{height:300px}
  .face{padding:12px}
  .alt-title{font-size:14px}
  .lens-row{grid-template-columns:repeat(2,1fr)}
  .stage-rules{grid-template-columns:1fr}
  .speech p{font-size:14px}
  .stage-content{padding:16px}
  .field-row{grid-template-columns:1fr}
  .upgrade-side{grid-template-columns:1fr}
  .pc-stamp{width:66px;height:66px;font-size:7.5px}
  .pc-stamp b{font-size:11px}
  .modal{padding:10px}
  .finale h2{font-size:26px}
  .homework{flex-direction:column;align-items:flex-start}
  .use-list{grid-template-columns:1fr}
}
@media (max-height:700px) and (min-width:981px){
  .ch{padding-top:12px;padding-bottom:22px}
  .ch-head{margin-bottom:10px}
  .ch-head h2{font-size:clamp(24px,3vw,38px)}
  .ch-head p{font-size:12px;line-height:1.7}
  .pencil-stage{min-height:330px}
  .obj-card{height:300px}
  .slot{min-height:140px}
  .stage-wrap,.stage-content{min-height:360px}
  .badge-stage{width:200px}
  .finale{gap:9px}
}


/* ---------- large classroom displays ---------- */
@media (min-width:1600px){
  .ch-body{width:min(1440px,100%)}
  .cover-grid{padding-left:clamp(60px,6vw,120px);padding-right:clamp(60px,6vw,120px)}
  .cover-copy{max-width:920px}
  .cover-copy h1{font-size:clamp(80px,5.4vw,104px)}
  .cover-lead{font-size:17px;max-width:620px}
  .cover-meta span{font-size:11.5px;padding:7px 13px}
  .cover-actions .btn{font-size:15px;padding:15px 28px}
  .portal{width:min(100%,620px)}
  .ch-head h2{font-size:clamp(40px,3.4vw,56px)}
  .ch-head p{font-size:16px}
  .obj-card{height:clamp(340px,44vh,430px)}
  .pencil-stage{min-height:clamp(420px,52vh,560px)}
  .use-list li p{font-size:12px}
  .slot{min-height:190px}
}

/* ---------- short screens (classroom projectors 1366x768) ---------- */
@media (max-height:820px) and (min-width:981px){
  .ch{padding-top:10px;padding-bottom:14px}
  .ch-head{margin-bottom:10px}
  .ch-head h2{font-size:clamp(24px,3vw,36px);margin:4px 0 6px}
  .ch-head p{font-size:12px;line-height:1.7}
  .act b{font-size:24px}
  .ch-foot-note{margin-top:8px;font-size:10.5px}
  /* 01 */
  .pencil-stage{min-height:320px}
  .discover-panel{padding:12px;gap:8px}
  .use-list{gap:5px;max-height:214px}
  .use-list li{padding:6px 8px}
  .use-list li p{font-size:10px;line-height:1.45}
  .use-list li b{font-size:11.5px}
  .custom-use{padding-top:8px}
  .custom-use input{padding:7px 9px}
  /* 02 */
  .obj-card{height:300px}
  /* 03 */
  .detective-layout{grid-template-columns:minmax(0,600px) 330px;gap:18px;justify-content:center}
  .room-panel{width:100%;max-width:none;margin:0}
  .detective-panel{padding:11px 12px;gap:8px}
  .prob-list{max-height:160px}
  .prob-card{padding:6px 8px}
  .obs-row{padding:6px 9px}
  /* 04 */
  .idea-layout{grid-template-columns:250px 1fr}
  .slot{min-height:136px}
  .angle-btn{padding:6px 8px}
  /* 05 */
  .lens-panel{min-height:160px;padding:11px 14px}
  .lens-panel textarea{min-height:44px}
  .lens-btn{padding:9px 6px 8px}
  .lens-ic{width:34px;height:34px;font-size:16px}
  /* 06 */
  .proposal-layout{gap:10px}
  .prop-form{gap:6px}
  .field input,.field textarea{padding:7px 9px;font-size:12px}
  .field textarea{min-height:40px}
  .field .fh{display:none}
  .draw-panel{padding:9px;gap:6px}
  .proposal-cta{position:sticky;bottom:0;z-index:20;background:rgba(8,13,30,.96);backdrop-filter:blur(10px);margin-top:8px;padding:8px 12px}
  /* 07 */
  .stage-wrap,.stage-content{min-height:330px}
  .stage-content{padding:10px 18px}
  .speech p{font-size:14px;line-height:1.5}
  .speech p.lead{font-size:16px}
  .stage-rules{margin-top:8px}
  .stage-rules .rule{padding:6px 10px}
  .stage-rules .rule p{font-size:9.5px;line-height:1.5}
  /* 08 */
  .badge-stage{width:clamp(180px,24vh,220px)}
  .finale .sub{display:none}
  .badge-inner .b-date{display:none}
  .final-quote{display:none}
  .homework p{font-size:10px}
  .jstep span{font-size:9px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
@media print{
  body{background:#fff}
  #deck,.topbar,.bottombar,.notes,.modal-x,.modal-actions,.toast,#fx,.progress-top,.grain,.aura,#sky,.curtain-trans{display:none!important}
  .modal{display:none!important}
  .modal.show{position:static;display:block!important;padding:0;background:#fff;backdrop-filter:none}
  .modal-box{max-height:none;border:0;box-shadow:none;background:#fff}
  .prop-card{border-radius:0}
}

/* =========================================================
   章节访问门禁 / 限时解锁
   ========================================================= */
.gate{position:fixed;inset:0;z-index:300;display:none;align-items:center;justify-content:center;padding:24px;overflow:auto;
  background:radial-gradient(900px 600px at 50% 0%,rgba(245,196,81,.12),transparent 65%),rgba(3,6,14,.97);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.gate.show{display:flex}
.gate-bg{position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse 70% 70% at 50% 45%,#000 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 45%,#000 20%,transparent 75%)}
.gate-card{position:relative;z-index:2;width:min(470px,100%);padding:30px 32px 24px;border-radius:24px;
  background:linear-gradient(165deg,rgba(22,32,64,.98),rgba(7,12,28,.99));
  border:1px solid rgba(245,196,81,.34);box-shadow:0 40px 120px rgba(0,0,0,.75),inset 0 1px 0 rgba(255,255,255,.08);
  animation:gateIn .5s var(--ease)}
@keyframes gateIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:none}}
.gate.gate-leaving .gate-card{animation:gateOut .55s var(--ease) forwards}
@keyframes gateOut{to{opacity:0;transform:translateY(-10px) scale(.97)}}
.gate-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.gate-brand{font-size:10px;letter-spacing:.28em;color:var(--gold);font-weight:700}
.gate-lock{width:38px;height:38px;border-radius:50%;border:1px solid rgba(245,196,81,.3);background:rgba(245,196,81,.07);
  display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 0 22px rgba(245,196,81,.15)}
.gate-kicker{font-size:9px;letter-spacing:.26em;color:var(--faint);margin-bottom:8px}
.gate h2{font-family:var(--serif);font-size:34px;line-height:1.2;letter-spacing:.04em;margin:0 0 6px}
.gate-title{font-family:var(--serif);font-size:17px;line-height:1.55;color:var(--gold2);margin-bottom:16px}
.gate-window{padding:10px 12px;border-radius:9px;background:rgba(255,255,255,.035);border:1px solid rgba(255,255,255,.08);margin-bottom:12px}
.gate-window span{display:block;font-size:9px;letter-spacing:.12em;color:var(--faint);margin-bottom:3px}
.gate-window b{font-size:10.5px;font-weight:500;color:var(--dim);letter-spacing:.02em}
.gate-status{font-size:10.5px;line-height:1.7;color:var(--dim);margin:0 0 10px;min-height:0}
.gate-status.warn{padding:8px 10px;border-radius:8px;background:rgba(255,122,107,.08);border:1px solid rgba(255,122,107,.22);color:#FFB3A8}
.gate-label{display:block;font-size:10px;letter-spacing:.14em;color:var(--gold);margin-bottom:6px}
.gate-row{display:flex;gap:8px;margin-bottom:10px}
.gate-row input{flex:1;min-width:0;padding:12px 13px;border-radius:9px;border:1px solid rgba(255,255,255,.16);background:rgba(255,255,255,.05);
  color:var(--ink);font-size:14px;letter-spacing:.06em;transition:.2s}
.gate-row input:focus{outline:none;border-color:rgba(245,196,81,.6);box-shadow:0 0 0 3px rgba(245,196,81,.1);background:rgba(245,196,81,.05)}
.gate-eye{padding:0 12px;border-radius:9px;border:1px solid rgba(255,255,255,.14);color:var(--dim);font-size:11px;white-space:nowrap}
.gate-eye:hover{color:var(--ink);background:rgba(255,255,255,.06)}
.gate-enter{width:100%;padding:13px;border-radius:10px;background:linear-gradient(115deg,var(--gold2),var(--gold));color:#211805;
  font-size:14px;font-weight:800;letter-spacing:.08em;transition:.25s;box-shadow:0 14px 34px -16px rgba(245,196,81,.7)}
.gate-enter:hover{transform:translateY(-1px);box-shadow:0 18px 40px -16px rgba(245,196,81,.9)}
.gate-enter:disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.gate-error{font-size:11px;line-height:1.6;color:#FF9E90;margin-top:8px;min-height:0}
.gate-error.on{min-height:18px}
.gate-hint{margin-top:14px;font-size:10.5px;color:var(--faint);cursor:pointer;line-height:1.7}
.gate-hint b{color:var(--gold2);font-size:15px;margin:0 3px;cursor:pointer}
.gate-hint:hover{color:var(--dim)}
.gate-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08);
  font-size:9px;line-height:1.5;color:var(--faint)}
.gate-foot a{color:var(--dim);text-decoration:underline;text-underline-offset:3px;white-space:nowrap}
.gate-foot a:hover{color:var(--gold)}
.gate-card.shake{animation:gateShake .42s}
@keyframes gateShake{0%,100%{transform:translateX(0)}20%{transform:translateX(-9px)}40%{transform:translateX(8px)}60%{transform:translateX(-5px)}80%{transform:translateX(3px)}}
html.gate-locked,body.gate-locked{overflow:hidden}
.tb-btn.lease-btn{font-variant-numeric:tabular-nums;color:var(--gold);border-color:rgba(245,196,81,.25);background:rgba(245,196,81,.06)}
.tb-btn.lease-btn.on:hover{color:#211805;background:linear-gradient(115deg,var(--gold2),var(--gold));border-color:transparent}
@media (max-width:600px){
  .gate{padding:14px}
  .gate-card{padding:22px 18px 18px;border-radius:18px}
  .gate h2{font-size:28px}
  .gate-title{font-size:14.5px}
  .gate-window b{font-size:9.5px}
  .gate-foot{flex-direction:column;align-items:flex-start;gap:6px}
}

/* ---------- 保存到我的实验室 ---------- */
.saved-panel{padding:34px 30px 26px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:10px}
.saved-ic{font-size:46px;line-height:1;filter:drop-shadow(0 10px 24px rgba(245,196,81,.35))}
.saved-kicker{font-size:9px;letter-spacing:.28em;color:var(--gold);margin-top:2px}
.saved-panel h3{font-family:var(--serif);font-size:clamp(24px,3vw,32px);letter-spacing:.04em;line-height:1.3}
.saved-panel>p{font-size:13px;line-height:1.9;color:var(--dim);max-width:560px}
.saved-tip{width:100%;max-width:640px;text-align:left;padding:12px 15px;border-radius:11px;border:1px solid rgba(245,196,81,.22);background:rgba(245,196,81,.06);margin:4px 0}
.saved-tip b{display:block;font-size:10px;letter-spacing:.14em;color:var(--gold);margin-bottom:4px}
.saved-tip span{font-size:12px;line-height:1.8;color:var(--dim)}
.saved-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;margin-top:4px}
.saved-foot{font-size:9.5px;color:var(--faint);margin-top:4px}
@media print{
  .gate{display:none!important}
  .saved-panel{display:none!important}
}

/* =========================================================
   第 02–04 章通用组件
   ========================================================= */

/* ---- case file ---- */
.case-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px;align-items:stretch}
.case-file{position:relative;padding:26px 28px 22px;border-radius:20px;background:linear-gradient(165deg,rgba(38,28,36,.92),rgba(10,13,28,.96));border:1px solid rgba(255,122,107,.28);overflow:hidden}
.case-file::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,107,.18),transparent 68%)}
.case-stamp{position:absolute;right:24px;top:20px;width:68px;height:68px;border:2px solid rgba(255,122,107,.55);border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:8px;letter-spacing:.12em;color:rgba(255,160,145,.85);transform:rotate(9deg);line-height:1.4;font-weight:700}
.case-kicker{font-size:9.5px;letter-spacing:.2em;color:var(--acc);margin-bottom:10px}
.case-file h3{font-family:var(--serif);font-size:clamp(22px,2.6vw,32px);line-height:1.35;margin-bottom:10px;max-width:76%}
.case-file>p{font-size:12.5px;line-height:1.9;color:var(--dim);max-width:82%}
.case-rules{display:flex;flex-direction:column;gap:7px;margin-top:18px}
.case-rules>div{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--dim)}
.case-rules b{width:22px;height:22px;border-radius:50%;background:rgba(255,122,107,.12);border:1px solid rgba(255,122,107,.3);display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:11px;color:var(--acc);flex:none}
.case-next{display:flex;align-items:center;gap:12px;margin-top:20px;flex-wrap:wrap}
.case-next span{font-size:10px;color:var(--faint)}
.case-side{display:flex;flex-direction:column;gap:10px}
.case-stat{padding:14px 16px;border-radius:13px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);display:flex;align-items:center;gap:12px}
.case-stat b{font-family:var(--serif);font-size:26px;color:var(--acc);line-height:1}
.case-stat span{font-size:10.5px;color:var(--dim);line-height:1.5}
.case-quote{flex:1;padding:14px 16px;border-radius:13px;background:rgba(255,122,107,.04);border:1px solid rgba(255,122,107,.16);font-size:10.5px;line-height:1.9;color:var(--dim)}
.case-quote::before{content:"“";font-family:var(--serif);font-size:24px;color:var(--acc);line-height:0;vertical-align:-6px;margin-right:2px}

/* ---- desk scene ---- */
.desk-scene{position:relative;border-radius:20px;overflow:hidden;min-height:clamp(380px,50vh,470px);background:linear-gradient(180deg,#2A2030 0%,#161426 48%,#0C1224 100%);border:1px solid rgba(255,255,255,.1)}
.desk-wall{position:absolute;left:0;right:0;top:0;height:44%;background:linear-gradient(180deg,#332536,#1A1830);border-bottom:6px solid rgba(0,0,0,.3)}
.dw-poster{position:absolute;left:8%;top:20%;padding:8px 12px;border:1px solid rgba(255,255,255,.14);border-radius:4px;font-family:var(--serif);font-size:11px;color:rgba(255,255,255,.42);transform:rotate(-2deg)}
.dw-clock{position:absolute;right:9%;top:16%;font-size:18px;opacity:.45}
.desk-surface{position:absolute;left:0;right:0;bottom:0;height:56%;background:linear-gradient(180deg,#4A342C,#2A1C1C 70%,#160F18);box-shadow:inset 0 12px 30px rgba(0,0,0,.35)}
.desk-surface::before{content:"";position:absolute;left:0;right:0;top:0;height:10px;background:linear-gradient(180deg,rgba(255,255,255,.14),transparent)}
.clue{position:absolute;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:4px;z-index:3;padding:8px 10px;border-radius:14px;border:1px dashed rgba(255,255,255,.22);background:rgba(8,13,30,.55);backdrop-filter:blur(6px);transition:.25s}
.clue .ci{font-size:26px;line-height:1}
.clue .cn{font-size:9px;color:rgba(255,255,255,.7);white-space:nowrap}
.clue::after{content:"";position:absolute;inset:-5px;border-radius:16px;border:1px solid rgba(255,122,107,.35);animation:hsPulse 2.6s infinite}
.clue:hover{transform:translate(-50%,-50%) scale(1.08);border-color:rgba(255,122,107,.6)}
.clue.found{background:rgba(255,122,107,.16);border-style:solid;border-color:rgba(255,122,107,.7);box-shadow:0 0 24px rgba(255,122,107,.25)}
.clue.found::after{display:none}
.clue.found .cn{color:var(--acc)}
.desk-scene .room-tip{z-index:5}
.obs-timer{height:4px;border-radius:3px;background:rgba(255,255,255,.08);overflow:hidden}
.obs-timer i{display:block;height:100%;width:100%;background:linear-gradient(90deg,var(--acc),var(--gold))}

/* ---- sorting + PK ---- */
.pk-host{margin-bottom:12px}
.pk-board{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.pk-team{display:flex;align-items:center;gap:9px;padding:8px 12px;border-radius:10px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);transition:.2s}
.pk-team.active{border-color:rgba(255,122,107,.55);background:rgba(255,122,107,.1);box-shadow:0 0 0 1px rgba(255,122,107,.15)}
.pk-team .pt-name{font-size:11px;color:var(--dim)}
.pk-team b{font-family:var(--serif);font-size:20px;color:var(--acc);min-width:26px;text-align:right}
.pk-team button{padding:4px 8px;border-radius:6px;border:1px solid rgba(255,255,255,.14);color:var(--dim);font-size:9.5px}
.pk-team button:hover{color:var(--ink);border-color:rgba(255,255,255,.3)}
.pk-switch{padding:7px 11px;border-radius:8px;border:1px solid rgba(255,255,255,.13);color:var(--faint);font-size:10px}
.pk-tip{font-size:9.5px;color:var(--faint);margin-top:4px}
.pk-tip b{color:var(--acc)}
.sort-layout{display:grid;grid-template-columns:1fr 1.15fr;gap:14px;align-items:start}
.sort-pool{padding:14px;border-radius:16px;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.08)}
.sort-title{font-size:10px;letter-spacing:.14em;color:var(--dim);margin-bottom:10px;display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap}
.sort-title span{font-size:9px;color:var(--faint);letter-spacing:0}
.sort-card{padding:10px 12px;border-radius:9px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);font-size:12px;line-height:1.6;margin-bottom:7px;cursor:grab;transition:.2s;user-select:none}
.sort-card:hover{border-color:rgba(255,122,107,.4);background:rgba(255,122,107,.06)}
.sort-card.selected{border-color:var(--acc);box-shadow:0 0 0 2px rgba(255,122,107,.15);background:rgba(255,122,107,.1)}
.sort-card.dragging{opacity:.5}
.sort-card.correct{border-color:rgba(139,209,124,.5);background:rgba(139,209,124,.08);cursor:default;font-size:11px;margin:0 0 5px}
.sort-card.wrong{animation:gateShake .4s;border-color:var(--coral);background:rgba(255,122,107,.1)}
.sort-bins{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sort-bin{min-height:190px;border-radius:14px;border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.02);padding:11px;transition:.2s}
.sort-bin.over{border-color:var(--acc);background:rgba(255,122,107,.07)}
.bin-head{display:flex;flex-direction:column;gap:2px;margin-bottom:8px;padding-bottom:7px;border-bottom:1px solid rgba(255,255,255,.07)}
.bin-head b{font-size:12px}
.bin-head span{font-size:9px;color:var(--faint)}
.bin-list{min-height:120px}
.ai-row{display:flex;align-items:flex-start;gap:10px;margin-top:9px;flex-wrap:wrap}
.ai-out{flex:1;min-width:220px;font-size:11px;line-height:1.7;color:var(--dim);opacity:0;transform:translateY(4px);transition:.3s}
.ai-out.show{opacity:1;transform:none}
.ai-out b{display:inline-block;color:var(--acc);margin-right:8px;font-size:10px;letter-spacing:.08em}
.ai-out span{color:var(--gold2)}

/* ---- why board ---- */
.why-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:14px;align-items:start}
.why-focus{grid-column:1/-1;padding:14px 18px;border-radius:14px;background:linear-gradient(135deg,rgba(255,122,107,.1),rgba(255,255,255,.02));border:1px solid rgba(255,122,107,.25)}
.why-focus .wf-k{font-size:9px;letter-spacing:.18em;color:var(--acc);display:block;margin-bottom:3px}
.why-focus b{font-family:var(--serif);font-size:clamp(17px,1.8vw,22px);line-height:1.5}
.wf-sub{font-size:10.5px;color:var(--faint);margin-top:4px}
.why-board{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.why-node{padding:13px 14px;border-radius:13px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);text-align:left;display:flex;flex-direction:column;gap:3px;transition:.2s}
.why-node span{font-size:18px}
.why-node b{font-size:13px;color:var(--ink)}
.why-node em{font-style:normal;font-size:10px;color:var(--faint)}
.why-node:hover{border-color:rgba(255,122,107,.4);background:rgba(255,122,107,.05)}
.why-node.active{border-color:rgba(255,122,107,.6);background:rgba(255,122,107,.1)}
.why-detail{grid-column:1/-1;padding:14px 16px;border-radius:14px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.025);min-height:120px}
.wd-empty{font-size:11px;color:var(--faint);line-height:1.8}
.wd-q{font-family:var(--serif);font-size:clamp(15px,1.5vw,18px);line-height:1.65;color:var(--gold2);margin-bottom:9px}
.wd-label{font-size:9px;letter-spacing:.14em;color:var(--faint);margin-bottom:6px}
.wd-chips{display:flex;flex-wrap:wrap;gap:6px}
.evidence-chip{padding:7px 10px;border-radius:8px;border:1px dashed rgba(255,255,255,.16);background:rgba(255,255,255,.03);font-size:10.5px;color:var(--dim);transition:.2s}
.evidence-chip:hover{color:var(--ink);border-color:rgba(255,122,107,.5)}
.evidence-chip.on{background:rgba(255,122,107,.12);border-style:solid;border-color:rgba(255,122,107,.5);color:var(--acc)}
.evidence-side{padding:14px;border-radius:16px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:9px}
.evidence-list{display:flex;flex-direction:column;gap:6px;min-height:70px;max-height:150px;overflow-y:auto}
.ev-item{display:flex;gap:8px;align-items:flex-start;padding:7px 9px;border-radius:8px;background:rgba(255,255,255,.035);font-size:10.5px;line-height:1.55;animation:popIn .3s var(--ease)}
.ev-item b{color:var(--acc);font-family:var(--serif);font-size:12px;flex:none}

/* ---- matrix ---- */
.matrix{border:1px solid rgba(255,255,255,.09);border-radius:16px;overflow:hidden;background:rgba(255,255,255,.02)}
.matrix-head,.matrix-row{display:grid;grid-template-columns:1.6fr repeat(4,1fr) .55fr;gap:6px;align-items:center;padding:10px 14px}
.matrix-head{background:rgba(255,255,255,.04);font-size:9px;letter-spacing:.08em;color:var(--faint)}
.matrix-row{border-top:1px solid rgba(255,255,255,.07);cursor:pointer;transition:.2s}
.matrix-row:hover{background:rgba(255,122,107,.04)}
.matrix-row.selected{background:rgba(255,122,107,.08);box-shadow:inset 3px 0 0 var(--acc)}
.mr-name b{display:block;font-size:11.5px;line-height:1.5}
.mr-name span{display:block;font-size:9px;color:var(--faint);margin-top:2px}
.mr-stars{display:flex;gap:1px}
.star-btn{font-size:14px;color:rgba(255,255,255,.16);transition:.15s;padding:0 1px}
.star-btn:hover{color:var(--gold2)}
.star-btn.on{color:var(--gold);text-shadow:0 0 8px rgba(245,196,81,.5)}
.mr-total{font-family:var(--serif);font-size:18px;color:var(--acc);text-align:center}
.matrix-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;flex-wrap:wrap}
.matrix-foot>span{font-size:9.5px;color:var(--faint)}

/* ---- report ---- */
.report-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:14px;align-items:start}
.report-form{display:flex;flex-direction:column;gap:9px}
.report-form .field textarea{min-height:46px}

/* ---- mini timer ---- */
.mini-timer{display:flex;align-items:baseline;gap:4px;min-width:66px}
.mini-timer b{font-family:var(--serif);font-size:30px;color:var(--gold);line-height:1}
.mini-timer span{font-size:10px;color:var(--faint)}
.mini-timer b.warn{color:var(--coral);animation:numPulse .8s infinite}

/* ---- sheet preview ---- */
.sheet-preview{padding:16px;display:flex;justify-content:center;background:#0B1226}
.sheet-preview img{max-width:100%;max-height:72vh;border-radius:8px;box-shadow:0 18px 50px rgba(0,0,0,.5)}

@media (max-width:1180px){
  .case-grid{grid-template-columns:1fr}
  .case-side{flex-direction:row;flex-wrap:wrap}
  .case-quote{flex:1 1 100%}
  .why-layout{grid-template-columns:1fr}
  .report-layout{grid-template-columns:1fr}
}
@media (max-width:900px){
  .sort-layout{grid-template-columns:1fr}
  .matrix-head{display:none}
  .matrix-row{grid-template-columns:1.4fr repeat(4,1fr) .5fr;padding:9px 10px;gap:3px}
  .matrix-row .mr-name span{display:none}
  .mr-name b{font-size:10.5px}
  .star-btn{font-size:12px}
}
@media (max-width:760px){
  .case-file{padding:20px 18px}
  .case-file h3{max-width:100%;font-size:22px}
  .case-file>p{max-width:100%}
  .case-stamp{width:54px;height:54px;font-size:7px;right:16px;top:14px}
  .case-next{flex-direction:column;align-items:flex-start}
  .desk-scene{min-height:390px}
  .clue{padding:6px 7px}
  .clue .ci{font-size:22px}
  .sort-bins{grid-template-columns:1fr}
  .sort-bin{min-height:130px}
  .why-board{grid-template-columns:1fr 1fr}
  .matrix-row{grid-template-columns:1fr 1fr 1fr 1fr 1fr .4fr;font-size:9px}
  .matrix-row .mr-name{grid-column:1/-1;margin-bottom:3px}
  .matrix-row .mr-name span{display:block}
  .matrix-head{display:none}
  .stage-controls{gap:10px}
}

/* ---- chapter 02 desk illustration ---- */
.desk-window{position:absolute;left:7%;top:8%;width:22%;height:22%;border:3px solid rgba(120,150,200,.28);border-radius:4px;
  background:linear-gradient(180deg,#17315A,#0B1A36);box-shadow:inset 0 0 30px rgba(80,140,220,.18)}
.desk-window::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:2px;background:rgba(120,150,200,.25)}
.desk-window::after{content:"";position:absolute;left:0;right:0;top:52%;height:2px;background:rgba(120,150,200,.25)}
.desk-shelf{position:absolute;right:7%;top:27%;width:22%;height:9px;background:#3A2A2A;border-radius:2px;box-shadow:0 6px 12px rgba(0,0,0,.35)}
.desk-shelf::before,.desk-shelf::after{content:"";position:absolute;bottom:100%;width:9px;height:34px;background:#7C4A3A;border-radius:2px}
.desk-shelf::before{left:16%}.desk-shelf::after{left:46%;height:42px;background:#4E7A8A}
.desk-table{position:absolute;left:7%;right:7%;top:46%;height:34%;z-index:1}
.desk-table .dt-front{position:absolute;left:0;right:0;top:13%;height:55%;background:linear-gradient(180deg,#6A4636,#3A2622);border-radius:3px;box-shadow:inset 0 4px 0 rgba(255,255,255,.08)}
.desk-table::before{content:"";position:absolute;left:-1%;right:-1%;top:0;height:15%;background:linear-gradient(180deg,#8A5E44,#5A3A2A);border-radius:5px;box-shadow:0 8px 18px rgba(0,0,0,.35),inset 0 2px 0 rgba(255,255,255,.18)}
.desk-table::after{content:"";position:absolute;left:0;right:0;top:15%;height:2px;background:rgba(0,0,0,.35)}
.desk-table .dt-leg{position:absolute;top:65%;width:5%;height:38%;background:linear-gradient(180deg,#4A3028,#2A1A18);border-radius:0 0 3px 3px}
.desk-table .dt-leg.l{left:6%}.desk-table .dt-leg.r{right:6%}
.desk-wall{z-index:0}.desk-surface{z-index:0;opacity:.35}

/* ---- chapter 02 layout fixes ---- */
.why-detail{grid-column:1}
.evidence-side{grid-column:2;grid-row:2 / span 2}
.report-layout>*{min-width:0}
.report-form,.report-layout .draw-panel{min-width:0}
.report-layout .draw-panel{position:static}
.report-layout .canvas-wrap{width:100%}
@media (max-width:1180px){
  .why-detail{grid-column:1}
  .evidence-side{grid-column:1;grid-row:auto}
}
.badge-inner .bn{margin-top:3px}
.badge-inner .b-date{margin-top:3px}

@media (max-height:920px){.badge-inner .b-date{display:none}}

/* =========================================================
   第 03 章 · 创意发散
   ========================================================= */
.paper-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:14px;align-items:stretch}
.paper-stage{position:relative;min-height:clamp(360px,48vh,460px);border-radius:20px;overflow:hidden;background:radial-gradient(circle at 50% 45%,rgba(167,139,250,.1),transparent 65%),linear-gradient(165deg,rgba(18,27,56,.72),rgba(7,12,28,.9));border:1px solid rgba(255,255,255,.09)}
.paper-sheet{position:absolute;left:50%;top:50%;width:42%;aspect-ratio:1/1.2;transform:translate(-50%,-50%) rotate(-3deg);border-radius:3px;background:linear-gradient(150deg,#FFFDF5,#EFE7D2);box-shadow:0 22px 50px rgba(0,0,0,.45);display:flex;align-items:center;justify-content:center}
.paper-sheet::before{content:"";position:absolute;inset:10px;border:1px dashed rgba(140,110,60,.28);border-radius:2px}
.paper-sheet span{font-family:var(--serif);font-size:clamp(18px,2vw,26px);color:rgba(80,60,30,.38);transform:rotate(3deg);letter-spacing:.2em}
.paper-idea{position:absolute;transform:translate(-50%,-50%);width:106px;padding:8px 10px;border-radius:11px;border:1px dashed rgba(255,255,255,.22);background:rgba(8,13,30,.8);font-size:10px;color:var(--dim);line-height:1.5;text-align:left;backdrop-filter:blur(6px);transition:.2s;z-index:3}
.paper-idea b{display:block;font-size:11.5px;color:var(--ink);margin-bottom:2px}
.paper-idea:hover{border-color:rgba(167,139,250,.6);transform:translate(-50%,-50%) scale(1.05)}
.paper-idea.found{border-color:rgba(167,139,250,.65);background:rgba(167,139,250,.12);color:var(--acc)}
.paper-idea.found b{color:var(--acc)}
.paper-constraints{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.paper-constraints button{padding:5px 9px;border-radius:99px;border:1px solid rgba(255,255,255,.12);font-size:9.5px;color:var(--faint);background:rgba(255,255,255,.02)}
.paper-constraints button:hover,.paper-constraints button.on{color:var(--acc);border-color:rgba(167,139,250,.45);background:rgba(167,139,250,.08)}

.method-lab{display:grid;grid-template-columns:260px 1fr;gap:14px;align-items:start}
.method-panel{padding:13px;border-radius:16px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));border:1px solid rgba(255,255,255,.09)}
.method-panel>h4{font-size:10px;letter-spacing:.14em;color:var(--dim);margin-bottom:9px}
.method-card{padding:9px 11px;border-radius:9px;border:1px solid rgba(255,255,255,.09);background:rgba(255,255,255,.03);margin-bottom:6px;cursor:grab;transition:.2s}
.method-card:hover{border-color:rgba(167,139,250,.45);background:rgba(167,139,250,.06)}
.method-card.active{border-color:rgba(167,139,250,.65);background:rgba(167,139,250,.12);box-shadow:0 0 0 1px rgba(167,139,250,.2)}
.method-card b{display:block;font-size:12px;margin-bottom:2px}
.method-card span{font-size:9.5px;line-height:1.5;color:var(--faint)}
.method-drop{margin-top:8px;padding:9px;border:1px dashed rgba(167,139,250,.35);border-radius:9px;text-align:center;font-size:9.5px;color:var(--faint);transition:.2s}
.method-drop.over{background:rgba(167,139,250,.1);color:var(--acc);border-color:var(--acc)}
.idea-lab{padding:14px;border-radius:16px;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.08);min-width:0}
.idea-problem{padding:9px 12px;border-radius:9px;background:rgba(167,139,250,.08);border:1px solid rgba(167,139,250,.22);font-size:11px;line-height:1.6;margin-bottom:9px}
.idea-problem b{color:var(--acc)}
.idea-prompt{font-size:11px;line-height:1.7;color:var(--gold2);min-height:38px;padding:7px 10px;border-left:2px solid var(--acc);background:rgba(167,139,250,.05);margin-bottom:9px}
.idea-slots-5{display:grid;grid-template-columns:repeat(5,1fr);gap:7px;margin-bottom:9px}
.slot5{min-height:132px;border-radius:10px;border:1px dashed rgba(255,255,255,.14);padding:8px;display:flex;flex-direction:column;background:rgba(255,255,255,.018);transition:.25s}
.slot5.filled{border-style:solid;border-color:rgba(255,255,255,.12);background:linear-gradient(165deg,rgba(20,29,60,.9),rgba(8,13,30,.95))}
.slot5.picked{border-color:rgba(167,139,250,.7);box-shadow:0 0 0 1px rgba(167,139,250,.25)}
.slot5 .s5top{display:flex;justify-content:space-between;gap:3px;font-size:8px;color:var(--faint);margin-bottom:5px}
.slot5 .s5top b{font-family:var(--serif);font-size:13px;color:var(--acc)}
.slot5 p{font-size:10px;line-height:1.55;flex:1;word-break:break-word}
.slot5 .s5empty{font-size:9.5px;color:var(--faint);line-height:1.7}
.slot5 .s5pick{margin-top:5px;padding:4px;border-radius:5px;border:1px solid rgba(167,139,250,.25);color:var(--acc);font-size:8.5px;background:rgba(167,139,250,.07)}
.slot5.picked .s5pick{background:var(--acc);color:#1a1204;border-color:transparent}
.idea-composer{display:flex;gap:7px}
.idea-composer input{flex:1;min-width:0;padding:9px 11px;border-radius:8px;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.04);font-size:11.5px}
.idea-composer input::placeholder{color:var(--faint)}
.idea-composer button{padding:0 14px;border-radius:8px;background:linear-gradient(115deg,var(--acc2),var(--acc));color:#1a1204;font-size:11px;font-weight:700}

.relay-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:14px;align-items:start}
.relay-chain{display:flex;flex-direction:column;gap:8px;min-height:330px;padding:14px;border-radius:16px;background:rgba(255,255,255,.025);border:1px solid rgba(255,255,255,.08)}
.relay-card{padding:10px 13px;border-radius:10px;border-left:3px solid var(--rc,#F5C451);background:rgba(255,255,255,.035);font-size:12px;line-height:1.65;animation:popIn .3s var(--ease)}
.relay-card b{display:block;font-size:8.5px;letter-spacing:.12em;color:var(--rc,#F5C451);margin-bottom:3px}
.relay-side{padding:14px;border-radius:16px;background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));border:1px solid rgba(255,255,255,.09);display:flex;flex-direction:column;gap:9px}
.relay-input{width:100%;padding:9px 11px;border-radius:8px;border:1px solid rgba(255,255,255,.13);background:rgba(255,255,255,.04);font-size:11.5px}
.relay-btns{display:flex;gap:7px}
.relay-btns button{flex:1;padding:8px;border-radius:8px;border:1px solid rgba(255,255,255,.13);font-size:10px;color:var(--dim)}
.relay-btns button[data-relay="0"]{border-color:rgba(255,122,107,.3);color:#FFB3A8}
.relay-btns button[data-relay="1"]{border-color:rgba(79,224,208,.3);color:var(--teal)}
.relay-btns button:hover{background:rgba(255,255,255,.06)}
.relay-rule{font-size:9.5px;line-height:1.7;color:var(--faint)}

.compare-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.compare-card{padding:13px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));transition:.2s}
.compare-card.selected{border-color:rgba(167,139,250,.65);box-shadow:0 0 0 1px rgba(167,139,250,.2)}
.compare-card h4{font-size:12.5px;line-height:1.5;margin-bottom:8px;min-height:38px}
.crit-row{display:flex;align-items:center;justify-content:space-between;gap:5px;padding:4px 0;border-top:1px solid rgba(255,255,255,.06)}
.crit-row span{font-size:9px;color:var(--faint)}
.crit-stars{display:flex;gap:1px}
.crit-stars button{font-size:12px;color:rgba(255,255,255,.16);padding:0}
.crit-stars button.on{color:var(--gold)}
.compare-total{display:flex;justify-content:space-between;align-items:center;margin-top:8px;padding-top:7px;border-top:1px solid rgba(255,255,255,.09);font-size:9.5px;color:var(--faint)}
.compare-total b{font-family:var(--serif);font-size:17px;color:var(--acc)}
.compare-card .pick-compare{width:100%;margin-top:7px;padding:6px;border-radius:7px;border:1px solid rgba(167,139,250,.3);color:var(--acc);font-size:10px;background:rgba(167,139,250,.06)}
.compare-card.selected .pick-compare{background:var(--acc);color:#1a1204;border-color:transparent}

/* =========================================================
   第 04 章 · 动手制作
   ========================================================= */
.project-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.project-card{padding:14px;border-radius:14px;border:1px solid rgba(255,255,255,.1);background:linear-gradient(165deg,rgba(18,27,56,.8),rgba(8,13,30,.95));cursor:pointer;transition:.2s;display:flex;flex-direction:column}
.project-card:hover{transform:translateY(-3px);border-color:rgba(79,224,208,.4)}
.project-card.selected{border-color:rgba(79,224,208,.65);box-shadow:0 0 0 1px rgba(79,224,208,.2)}
.project-icon{font-size:30px;margin-bottom:8px}
.project-card b{font-size:13px;line-height:1.5;margin-bottom:4px}
.project-card p{font-size:10px;line-height:1.65;color:var(--faint);flex:1}
.project-meta{display:flex;justify-content:space-between;font-size:8.5px;color:var(--faint);border-top:1px solid rgba(255,255,255,.07);padding-top:7px;margin-top:8px}
.project-card .pick-project{margin-top:7px;padding:6px;border-radius:7px;border:1px solid rgba(79,224,208,.3);color:var(--teal);font-size:9.5px;background:rgba(79,224,208,.06)}
.project-card.selected .pick-project{background:var(--teal);color:#08201d;border-color:transparent}

.design-checks{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}
.check-item{display:flex;align-items:center;gap:5px;font-size:9.5px;color:var(--dim);border:1px solid rgba(255,255,255,.1);padding:5px 8px;border-radius:99px}
.check-item input{accent-color:var(--teal)}

.material-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.material-card{padding:9px 10px;border-radius:9px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03);cursor:pointer;transition:.2s;display:flex;align-items:center;gap:8px}
.material-card:hover{border-color:rgba(79,224,208,.4)}
.material-card.in{border-color:rgba(79,224,208,.6);background:rgba(79,224,208,.08)}
.material-card .mi{font-size:18px;flex:none}
.material-card b{font-size:10.5px;display:block}
.material-card span{font-size:8.5px;color:var(--faint)}
.material-card .mc{font-family:var(--serif);font-size:12px;color:var(--gold);margin-left:auto}
.basket{margin-top:9px;padding:10px;border-radius:11px;border:1px dashed rgba(255,255,255,.15);min-height:90px}
.basket-list{display:flex;flex-wrap:wrap;gap:5px}
.basket-chip{font-size:9.5px;padding:4px 7px;border-radius:6px;background:rgba(79,224,208,.1);border:1px solid rgba(79,224,208,.25);color:var(--teal)}
.budget{display:flex;align-items:center;gap:8px;margin-top:8px}
.budget span{font-size:9.5px;color:var(--faint)}
.budget b{font-family:var(--serif);font-size:17px;color:var(--gold)}
.budget-bar{flex:1;height:5px;border-radius:3px;background:rgba(255,255,255,.08);overflow:hidden}
.budget-bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal),var(--gold));transition:.3s}

.steps-list{display:flex;flex-direction:column;gap:7px}
.step-card{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;border:1px solid rgba(255,255,255,.11);background:rgba(255,255,255,.03);cursor:grab;font-size:11px;transition:.2s}
.step-card:hover{border-color:rgba(79,224,208,.4)}
.step-card.dragging{opacity:.4}
.step-card .step-num{font-family:var(--serif);font-size:16px;color:var(--teal);width:22px;flex:none}
.step-card.correct{border-color:rgba(139,209,124,.4);background:rgba(139,209,124,.06)}
.step-card .step-grip{margin-left:auto;color:var(--faint);font-size:12px}

.test-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.test-card{padding:12px;border-radius:12px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.03)}
.test-card h4{font-size:11.5px;margin-bottom:4px}
.test-card p{font-size:9.5px;line-height:1.6;color:var(--faint);min-height:30px}
.test-result{display:flex;gap:4px;margin-top:7px}
.test-result button{flex:1;padding:4px;border-radius:5px;border:1px solid rgba(255,255,255,.1);font-size:8.5px;color:var(--faint)}
.test-result button.on{background:rgba(79,224,208,.14);border-color:rgba(79,224,208,.4);color:var(--teal)}
.improve-box{margin-top:9px;padding:10px;border-radius:10px;border:1px solid rgba(255,255,255,.08);background:rgba(255,255,255,.025)}
.improve-box label{font-size:9px;letter-spacing:.12em;color:var(--teal);display:block;margin-bottom:5px}
.improve-box textarea{width:100%;min-height:44px;resize:vertical;padding:8px 10px;border-radius:7px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);font-size:11px;line-height:1.6}

@media (max-width:1180px){
  .paper-layout{grid-template-columns:1fr}
  .method-lab{grid-template-columns:1fr}
  .relay-layout{grid-template-columns:1fr}
  .project-grid{grid-template-columns:repeat(2,1fr)}
  .idea-slots-5{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:900px){
  .compare-grid{grid-template-columns:1fr}
  .material-grid{grid-template-columns:1fr 1fr}
  .idea-slots-5{grid-template-columns:1fr 1fr}
  .paper-idea{width:92px;font-size:9px}
}
@media (max-width:720px){
  .project-grid,.material-grid,.test-grid{grid-template-columns:1fr}
  .paper-stage{min-height:360px}
  .paper-idea{width:84px;padding:6px}
  .paper-idea b{font-size:10px}
  .idea-slots-5{grid-template-columns:1fr}
  .slot5{min-height:0}
  .compare-grid{grid-template-columns:1fr}
}

/* badge breathing room */
.finale .badge-inner{padding-bottom:5%}
.finale .badge-inner .bn{margin-bottom:1px}
.relay-empty{padding:10px 13px;border-radius:10px;border:1px dashed rgba(255,255,255,.12);color:var(--faint);font-size:10px;letter-spacing:.04em;text-align:center;background:rgba(255,255,255,.015)}

/* ---------- 第 01 章新增：小组 PK / 拖拽选想法 ---------- */
.pk-lite{display:flex;align-items:center;gap:7px;padding:7px 9px;border-radius:9px;background:rgba(255,122,107,.04);border:1px solid rgba(255,122,107,.16);flex-wrap:wrap}
.pk-lite>span{font-size:8.5px;letter-spacing:.12em;color:var(--faint)}
.pkl-team{display:flex;align-items:center;gap:5px;font-size:10px}
.pkl-team b{color:var(--dim)}
.pkl-team em{font-style:normal;font-family:var(--serif);font-size:14px;color:var(--acc);min-width:14px;text-align:right}
.pkl-team button{padding:2px 6px;border-radius:5px;border:1px solid rgba(255,255,255,.14);color:var(--faint);font-size:8px}
.pkl-team button:hover{color:var(--ink);border-color:rgba(255,255,255,.3)}
.pick-zone{margin-top:6px;padding:6px 11px;border-radius:9px;border:1px dashed rgba(var(--acc-rgb),.35);background:rgba(var(--acc-rgb),.04);display:flex;align-items:center;justify-content:space-between;gap:8px;transition:.2s}
.pick-zone span{font-size:10px;color:var(--acc)}
.pick-zone em{font-style:normal;font-size:8.5px;color:var(--faint)}
.pick-zone.over{background:rgba(var(--acc-rgb),.14);border-color:var(--acc);box-shadow:0 0 0 1px rgba(var(--acc-rgb),.2)}
.slot.filled{cursor:grab}
.slot.dragging{opacity:.45}
.gate-inst{font-size:9px;letter-spacing:.12em;color:var(--faint);margin:-2px 0 8px;min-height:12px}
.gate-status.ok{color:var(--teal)}


/* ---------- 第 05–12 章通用小组件 ---------- */
.power-grid{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:8px!important}
.power-grid .project-card{padding:12px 12px 10px;min-height:0}
.power-grid .project-card p{font-size:10px;line-height:1.55;min-height:31px}
.power-grid .project-card .pick-project{margin-top:6px;padding:5px 8px}
@media(max-width:900px){.power-grid{grid-template-columns:repeat(2,minmax(0,1fr))!important}}
@media(max-width:620px){.power-grid{grid-template-columns:1fr!important}}

.report-form.form-two{display:grid;grid-template-columns:1fr 1fr;gap:0 10px;align-content:start}
.report-form.form-two .field:first-child{grid-column:1/-1}
.report-form.form-two textarea{min-height:56px;height:56px}
.report-form.form-two .field label{font-size:8.5px}
@media(max-width:760px){.report-form.form-two{grid-template-columns:1fr}.report-form.form-two .field:first-child{grid-column:auto}}

.project-grid.pick-3{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:900px){.project-grid.pick-3{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.project-grid.pick-3{grid-template-columns:1fr}}

/* ---------- 第 10 章杠杆 ---------- */
.lever-board{padding:4px 0}
.lever-palette{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:10px}
.lever-palette button{padding:8px 13px;border-radius:9px;border:1px solid var(--line);background:rgba(255,255,255,.035);color:var(--dim);font-size:11px;text-align:left}
.lever-palette button small{display:block;font-size:8.5px;color:var(--faint);margin-top:2px}
.lever-palette button.selected{border-color:var(--gold);background:rgba(245,196,81,.1);color:var(--gold2)}
.lever-stage{position:relative;height:190px;border-radius:13px;border:1px solid rgba(255,255,255,.07);background:radial-gradient(ellipse at 50% 80%,rgba(245,196,81,.1),transparent 60%),rgba(255,255,255,.018);overflow:hidden}
.lever-beam{position:absolute;left:8%;right:8%;top:92px;height:12px;border-radius:99px;background:linear-gradient(180deg,#E9D5A0,#B98A3C);box-shadow:0 8px 22px rgba(0,0,0,.35)}
.lever-pivot{position:absolute;left:50%;top:10px;transform:translateX(-50%);width:0;height:0;border-left:22px solid transparent;border-right:22px solid transparent;border-bottom:38px solid rgba(245,196,81,.8);filter:drop-shadow(0 0 12px rgba(245,196,81,.25))}
.lever-spot{position:absolute;top:-14px;transform:translateX(-50%);padding:5px 8px;border-radius:7px;border:1px solid var(--line);background:#101827;color:var(--dim);font-size:9.5px;line-height:1.3;white-space:nowrap}
.lever-spot small{display:block;font-size:9px;color:var(--gold);margin-top:1px}
.lever-spot.ok{border-color:rgba(79,224,208,.6);color:var(--teal)}
.lever-spot.bad{border-color:rgba(255,122,107,.6);color:#FFB3A8}
.lever-note{margin-top:10px;font-size:11.5px;line-height:1.8;color:var(--dim)}

/* ---------- 第 11 章小车 ---------- */
.car-board{padding:4px 0}
.car-stage{position:relative;height:240px;border-radius:13px;border:1px solid rgba(255,255,255,.07);background:radial-gradient(ellipse at 50% 85%,rgba(96,165,250,.12),transparent 62%),rgba(255,255,255,.018);overflow:hidden}
.car-body{position:absolute;left:26%;top:47%;width:48%;height:22%;border-radius:8px;background:linear-gradient(160deg,#9CC7FF,#4F86D6);box-shadow:0 10px 28px rgba(0,0,0,.35)}
.car-load{position:absolute;left:38%;top:30%;width:24%;height:17%;border-radius:6px;border:1px dashed rgba(245,196,81,.7);background:rgba(245,196,81,.12)}
.car-axle{position:absolute;left:18%;right:18%;top:72%;height:5px;border-radius:99px;background:linear-gradient(90deg,#8A6A3A,#E9D5A0,#8A6A3A)}
.car-wheel{position:absolute;top:64%;width:58px;height:58px;border-radius:50%;border:7px solid #1A2235;background:radial-gradient(circle,#4B5563 35%,#111827 36%);box-shadow:0 0 0 2px rgba(255,255,255,.12)}
.car-wheel.left{left:14%}.car-wheel.right{right:14%}
.car-spot{position:absolute;transform:translate(-50%,-50%);padding:5px 7px;border-radius:7px;border:1px solid var(--line);background:#101827;color:var(--dim);font-size:9px;line-height:1.3;white-space:nowrap}
.car-spot small{display:block;font-size:9px;color:var(--gold);margin-top:1px}
.car-spot.ok{border-color:rgba(79,224,208,.6);color:var(--teal)}
.car-spot.bad{border-color:rgba(255,122,107,.6);color:#FFB3A8}

/* ---------- 第 12 章工程设计会 ---------- */
.meet-grid{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.meet-card{padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:rgba(255,255,255,.025)}
.meet-card h4{font-size:12px;margin:0 0 3px;color:var(--gold2)}
.meet-card p{font-size:10px;color:var(--faint);margin:0 0 8px;line-height:1.5}
.meet-opts{display:flex;gap:5px;flex-wrap:wrap}
.meet-opts button{padding:6px 8px;border-radius:6px;border:1px solid var(--line);background:rgba(255,255,255,.03);color:var(--dim);font-size:9.5px}
.meet-opts button.on{border-color:rgba(52,211,153,.55);background:rgba(52,211,153,.1);color:var(--teal)}
@media(max-width:760px){.meet-grid{grid-template-columns:1fr}}
@media(min-height:821px) and (max-height:940px){
  .finale .badge-stage{width:clamp(200px,23vh,240px)}
  .report-form.form-two textarea{height:52px;min-height:52px}
  .proposal-cta{margin-top:9px}
}