:root{
  --paper:#F3EDE2; --paper-2:#EAE2D3; --ink:#1F1D1A; --ink-2:#5F594F; --line:rgba(31,29,26,.14);
  --seal:#B23A2E; --accent:#B23A2E;
  --serif:"Songti SC","STSongti-SC","Noto Serif SC","Noto Serif CJK SC","Source Han Serif SC","Source Han Serif CN","SimSun",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  --r:8px; --ease:cubic-bezier(.2,.7,.2,1);
  --safe-b:env(safe-area-inset-bottom,0px); --safe-t:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{background:var(--paper);color:var(--ink);font:16px/1.6 var(--serif);-webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;overflow-x:hidden}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;touch-action:manipulation}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
[hidden]{display:none!important}

/* 宣纸纹理 */
.paper{position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;mix-blend-mode:multiply;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .3 0 0 0 0 .22 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}
.side-poem{position:fixed;top:50%;transform:translateY(-50%);writing-mode:vertical-rl;letter-spacing:.5em;
  color:var(--ink-2);opacity:.5;font-size:15px;display:none;z-index:1}
.side-poem.left{left:48px}.side-poem.right{right:48px}
@media (min-width:1100px){.side-poem{display:block}}

#app{position:relative;z-index:2;max-width:520px;margin:0 auto;min-height:100vh;min-height:100dvh}
.screen{display:none;min-height:100vh;min-height:100dvh;padding:calc(20px + var(--safe-t)) 24px calc(24px + var(--safe-b));
  animation:enter .6s var(--ease) both}
.screen.is-active{display:flex;flex-direction:column}
@keyframes enter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

.eyebrow{font-size:14px;letter-spacing:.2em;color:var(--ink-2)}
.link-btn{font-size:14px;color:var(--ink-2);padding:10px 0;min-height:44px;border-bottom:1px solid var(--line)}
.link-btn:hover{color:var(--ink)}

/* 印章 */
.seal{display:inline-grid;place-items:center;background:var(--seal);color:#F7EDE4;border-radius:6px;
  box-shadow:inset 0 0 0 3px var(--seal),inset 0 0 0 5px rgba(247,237,228,.85);
  filter:url(#rough);position:relative}
.seal i{font-style:normal;font-weight:700;line-height:1}
.seal-lg{width:76px;height:76px}.seal-lg i{font-size:44px}

/* 封面 */
.cover{position:relative;overflow:hidden}
.cover-top{display:flex;justify-content:space-between;align-items:center}
.cover-main{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;padding:32px 0;position:relative}
.cover-title{font-weight:700;font-size:clamp(40px,11vw,56px);letter-spacing:.16em;line-height:1.2;
  display:flex;flex-direction:row-reverse;gap:.35em}
.cover-title span{writing-mode:vertical-rl}
.cover-title span:last-child{margin-top:1.6em}
.cover-seal{position:absolute;left:16%;top:14%;transform:rotate(-6deg);animation:stamp .9s .4s var(--ease) both}
.cover-sub{text-align:center;color:var(--ink-2);font-size:16px;letter-spacing:.08em}
.cover-bottom{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:16px;padding-bottom:24px}
.meta{display:flex;gap:20px;white-space:nowrap;list-style:none;font-size:14px;color:var(--ink-2)}
.meta b{color:var(--ink);font-weight:700;margin:0 2px}
.fine{font-size:14px;color:var(--ink)}
.mountains{position:absolute;left:0;right:0;bottom:0;height:46%;z-index:1;pointer-events:none;
  background:url(assets/mountains.jpg) right bottom/auto 100% no-repeat;mix-blend-mode:multiply;opacity:.6;
  -webkit-mask-image:linear-gradient(to bottom,transparent,#000 35%);mask-image:linear-gradient(to bottom,transparent,#000 35%)}
.cover-bottom{margin-top:auto;text-shadow:0 0 12px var(--paper),0 0 4px var(--paper)}
.cover-bottom .btn{text-shadow:none}

/* 按钮 */
.btn{min-height:52px;padding:0 32px;border-radius:var(--r);font-size:17px;letter-spacing:.2em;transition:transform .15s,background .2s,color .2s}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--ink);color:var(--paper);min-width:200px}
.btn-primary:hover{background:#000}
.btn-ghost{border:1px solid var(--ink)}
.btn-text{color:var(--ink-2);padding:0 16px;letter-spacing:.1em}

/* 答题 */
.quiz-head{display:flex;align-items:center;gap:12px;height:44px}
.icon-btn{width:44px;height:44px;display:grid;place-items:center;font-size:28px;line-height:1;color:var(--ink-2);border-radius:50%}
.icon-btn:hover{background:rgba(31,29,26,.06)}
.icon-btn:disabled{opacity:.25;cursor:default}
.slips{flex:1;display:flex;gap:5px;list-style:none;height:22px;align-items:stretch}
.slips li{flex:1;border-radius:2px;background:var(--paper-2);border:1px solid var(--line);transition:background .4s var(--ease),transform .4s}
.slips li.done{background:var(--ink);border-color:var(--ink)}
.slips li.now{transform:scaleY(1.25);border-color:var(--ink)}
.count{font:14px var(--sans);color:var(--ink-2);min-width:40px;text-align:right;font-variant-numeric:tabular-nums}
.quiz-body{flex:1;display:flex;flex-direction:column;justify-content:center;padding:32px 0 16px}
.quiz-body.swap{animation:qswap .45s var(--ease) both}
@keyframes qswap{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:none}}
.q-no{display:flex;align-items:center;gap:12px;color:var(--seal);font-size:15px;letter-spacing:.3em;margin-bottom:16px}
.q-no::after{content:"";flex:0 0 32px;height:1px;background:currentColor;opacity:.6}
.q-text{font-size:clamp(22px,6vw,26px);line-height:1.55;font-weight:700;margin-bottom:32px;min-height:2.2em}
.options{display:flex;flex-direction:column;gap:12px}
.opt{position:relative;overflow:hidden;display:flex;align-items:center;gap:16px;text-align:left;min-height:60px;padding:14px 18px;
  border:1px solid var(--line);border-radius:var(--r);background:rgba(255,255,255,.35);font-size:16px;line-height:1.5;
  transition:border-color .2s,background .2s,transform .15s}
.opt:hover{border-color:rgba(31,29,26,.4)}
.opt:active{transform:scale(.985)}
.opt .k{flex:0 0 28px;height:28px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:14px;color:var(--ink-2);transition:.2s}
.opt.sel{border-color:var(--ink);color:var(--paper)}
.opt.sel .k{border-color:rgba(243,237,226,.5);color:var(--paper)}
.opt span{position:relative;z-index:1}
.opt .ink{position:absolute;border-radius:50%;background:var(--ink);transform:translate(-50%,-50%) scale(0);width:20px;height:20px;z-index:0;
  animation:ink .55s var(--ease) forwards}
@keyframes ink{to{transform:translate(-50%,-50%) scale(60)}}
.opt.prev{border-color:var(--ink)}
.opt.prev .k{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.hint{text-align:center;font:14px var(--sans);color:var(--ink-2);opacity:.7;display:none}
@media (hover:hover) and (pointer:fine){.hint{display:block}}

/* 推演 */
.loading{align-items:center;justify-content:center;gap:24px}
.dynasty{font-size:96px;font-weight:700;line-height:1;width:120px;height:120px;display:grid;place-items:center}
.dynasty.flip{animation:flip .26s var(--ease)}
@keyframes flip{from{opacity:0;transform:translateY(10px);filter:blur(4px)}to{opacity:1;transform:none;filter:none}}
.brush{width:160px;height:4px;background:var(--paper-2);border-radius:2px;overflow:hidden}
.brush span{display:block;height:100%;width:100%;background:var(--ink);transform-origin:left;animation:brush 2.4s var(--ease) forwards}
@keyframes brush{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.loading-text{color:var(--ink-2);letter-spacing:.2em}

/* 结果 */
.result{padding-bottom:calc(112px + var(--safe-b))}
.shared-banner{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;margin-bottom:24px;border-radius:var(--r);
  background:var(--ink);color:var(--paper);font-size:15px}
.shared-banner button{flex:none;min-height:40px;padding:0 14px;border:1px solid rgba(243,237,226,.5);border-radius:6px;font-size:14px}
.identity{padding:16px 0 8px}
.name-wrap{display:flex;align-items:flex-end;gap:16px;margin:12px 0 12px}
.r-name{font-size:clamp(60px,18vw,84px);line-height:1.05;font-weight:800;letter-spacing:.06em;color:var(--accent)}
.seal-stamp{width:64px;height:64px;margin-bottom:10px;background:var(--seal);transform:rotate(-8deg)}
.seal-stamp i{font-size:38px}
.seal-stamp.go{animation:stamp .7s .35s cubic-bezier(.3,1.6,.5,1) both}
@keyframes stamp{0%{opacity:0;transform:scale(2.2) rotate(-18deg)}60%{opacity:1;transform:scale(.92) rotate(-6deg)}100%{transform:scale(1) rotate(-8deg)}}
.r-meta{font-size:16px;color:var(--ink-2);letter-spacing:.12em}
.r-code{margin-top:8px;display:flex;gap:8px;flex-wrap:wrap}
.r-code span{font-size:14px;padding:2px 10px;border:1px solid var(--line);border-radius:4px;color:var(--ink-2);letter-spacing:.1em}
.r-quote{margin:32px 0 8px;display:flex;flex-direction:row-reverse;justify-content:flex-start;gap:12px;align-items:flex-start}
.r-quote .v{writing-mode:vertical-rl;font-size:20px;letter-spacing:.25em;line-height:1.5;color:var(--ink)}
.r-quote cite{writing-mode:vertical-rl;font-style:normal;font-size:14px;color:var(--ink-2);letter-spacing:.15em;padding-top:2em}
.r-quote::before{content:"";width:1px;align-self:stretch;background:var(--accent);opacity:.5}

.details{padding-top:8px}
.r-tagline{font-size:24px;font-weight:700;line-height:1.5;padding:24px 0 12px;border-top:1px solid var(--line)}
.r-tagline::before{content:"「";color:var(--accent)}.r-tagline::after{content:"」";color:var(--accent)}
.r-desc{color:var(--ink);font-size:16px;line-height:1.9}
.sec-title{display:flex;align-items:baseline;gap:12px;font-size:15px;letter-spacing:.3em;color:var(--ink-2);font-weight:400;margin:40px 0 16px}
.sec-title::before{content:"";width:6px;height:6px;background:var(--accent);transform:rotate(45deg) translateY(-2px)}
.sec-title small{font:14px var(--sans);letter-spacing:0;margin-left:auto}

.dims{display:flex;flex-direction:column;gap:18px}
.dim-row{display:grid;grid-template-columns:auto 1fr auto;gap:12px;align-items:center;font-size:15px}
.dim-row .l,.dim-row .r{min-width:3em;color:var(--ink-2)}
.dim-row .r{text-align:right}
.dim-row .on{color:var(--ink);font-weight:700}
.bar{position:relative;height:6px;background:var(--paper-2);border-radius:3px}
.bar::after{content:"";position:absolute;left:50%;top:-3px;bottom:-3px;width:1px;background:var(--line)}
.bar i{position:absolute;top:0;bottom:0;border-radius:3px;background:var(--accent);transition:width 1s .3s var(--ease)}
.bar b{position:absolute;top:-26px;font:12px var(--sans);color:var(--ink-2);transform:translateX(-50%)}
.dim-note{grid-column:1/-1;font-size:14px;color:var(--ink-2);margin-top:-6px}

.duo{display:grid;grid-template-columns:1fr;gap:12px;margin-top:40px}
.tile{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:rgba(255,255,255,.3)}
.tile-soft{background:transparent;border-style:dashed}
.tile-title{font-size:14px;letter-spacing:.3em;color:var(--accent);margin-bottom:10px}
.tile ul{list-style:none;display:flex;flex-direction:column;gap:6px}
.tile li::before{content:"· ";color:var(--accent)}
.modern{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.modern div{border-top:2px solid var(--ink);padding-top:10px}
.modern dt{font-size:14px;color:var(--ink-2);letter-spacing:.2em}
.modern dd{font-size:17px;font-weight:700;margin-top:4px;line-height:1.5}
.bonds{display:grid;grid-template-columns:1fr;gap:12px}
.bond{display:flex;gap:16px;align-items:center;text-align:left;padding:16px;border:1px solid var(--line);border-radius:var(--r);transition:border-color .2s,background .2s;min-height:44px}
.bond:hover{border-color:var(--ink);background:rgba(255,255,255,.35)}
.bond .seal{width:44px;height:44px;flex:none;background:var(--c)}
.bond .seal{box-shadow:inset 0 0 0 2px var(--c),inset 0 0 0 3px rgba(247,237,228,.85)}
.bond .seal i{font-size:24px}
.bond small{display:block;font-size:14px;color:var(--ink-2);letter-spacing:.15em}
.bond strong{display:block;font-size:17px}
.bond em{display:block;font-style:normal;font-size:14px;color:var(--ink-2);margin-top:2px;line-height:1.5}
.relation{margin-top:24px;padding:20px;border-radius:var(--r);background:var(--ink);color:var(--paper);line-height:1.8}
.relation b{color:#F3C9A8}

.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.g-item{display:flex;flex-direction:column;align-items:center;gap:6px;padding:10px 0;border-radius:var(--r);min-height:44px;transition:background .2s}
.g-item:hover{background:rgba(31,29,26,.05)}
.g-item .seal{width:44px;height:44px;background:transparent;color:var(--ink-2);box-shadow:inset 0 0 0 1px var(--line);filter:none}
.g-item .seal i{font-size:22px;font-weight:400}
.g-item.seen .seal{color:var(--c);box-shadow:inset 0 0 0 1px var(--c)}
.g-item.me .seal{background:var(--c);color:#F7EDE4;box-shadow:inset 0 0 0 2px var(--c),inset 0 0 0 3px rgba(247,237,228,.85);filter:url(#rough)}
.g-item span{font-size:14px;color:var(--ink-2)}
.g-item.me span{color:var(--ink);font-weight:700}

.actions{position:fixed;left:0;right:0;bottom:0;z-index:5;display:flex;gap:8px;justify-content:center;align-items:center;
  padding:12px 16px calc(12px + var(--safe-b));background:linear-gradient(to top,var(--paper) 70%,rgba(243,237,226,0))}
.actions .btn{min-width:0;padding:0 18px;font-size:16px;letter-spacing:.1em}
.actions .btn-primary{flex:1;max-width:240px}

/* 弹层 */
.sheet-mask{position:fixed;inset:0;z-index:20;background:rgba(20,18,15,.45);display:flex;align-items:flex-end;justify-content:center;animation:fade .25s both}
@keyframes fade{from{opacity:0}}
.sheet{position:relative;width:100%;max-width:520px;max-height:88dvh;overflow:auto;background:var(--paper);border-radius:16px 16px 0 0;
  padding:32px 24px calc(24px + var(--safe-b));animation:up .35s var(--ease) both}
@keyframes up{from{transform:translateY(40px);opacity:0}}
.sheet-close{position:absolute;right:12px;top:12px}
.sheet h3{font-size:44px;line-height:1.1;color:var(--c)}
.sheet .s-meta{color:var(--ink-2);letter-spacing:.1em;margin:8px 0 16px}
.sheet .s-tag{font-weight:700;font-size:19px;margin-bottom:8px}
.sheet .s-quote{margin:16px 0;padding-left:14px;border-left:2px solid var(--c);color:var(--ink-2)}
.sheet .s-code{font:14px var(--sans);color:var(--ink-2);margin-top:16px}
.card-img{display:block;width:100%;border-radius:var(--r);border:1px solid var(--line);margin:8px 0 16px}
.sheet .center{text-align:center;color:var(--ink-2);font-size:14px}
.sheet .row{display:flex;gap:8px;justify-content:center;margin-top:12px}

.toast{position:fixed;left:50%;bottom:calc(96px + var(--safe-b));transform:translate(-50%,20px);opacity:0;z-index:30;pointer-events:none;
  background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:6px;font-size:15px;transition:.3s var(--ease)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* 桌面端 */
@media (min-width:960px){
  #app{max-width:560px}
  body.on-result #app{max-width:1040px}
  .result{padding:56px 48px 140px}
  .result-grid{display:grid;grid-template-columns:360px 1fr;gap:64px;align-items:start}
  .identity{position:sticky;top:48px}
  .details{padding-top:16px}
  .r-tagline{border-top:0;padding-top:0}
  .duo{grid-template-columns:1.3fr 1fr}
  .bonds{grid-template-columns:1fr 1fr}
  .gallery{grid-template-columns:repeat(8,1fr)}
  .actions{background:none;pointer-events:none}
  .actions>*{pointer-events:auto}
  .actions{bottom:24px;left:50%;right:auto;transform:translateX(-50%);padding:10px;border:1px solid var(--line);border-radius:12px;background:rgba(243,237,226,.92);backdrop-filter:blur(8px)}
  .sheet-mask{align-items:center}
  .sheet{border-radius:12px}
  .mountains{height:52%}
}
@media (min-width:600px){.screen{padding-left:40px;padding-right:40px}}
@media (max-height:640px){.cover-main{gap:16px;padding:16px 0}.cover-title{font-size:38px}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-delay:0s!important;transition-duration:.01ms!important}}

.quiz{position:relative;overflow:hidden}
.q-mark{position:absolute;right:-12px;top:72px;font-size:min(56vw,280px);font-weight:800;line-height:1;color:var(--ink);opacity:.045;pointer-events:none;letter-spacing:-.05em;z-index:-1}
.id-mountains{display:none}
@media (min-width:960px){
  .id-mountains{display:block;height:150px;margin-top:40px;background:url(assets/mountains.jpg) right bottom/auto 100% no-repeat;
    mix-blend-mode:multiply;opacity:.7;-webkit-mask-image:linear-gradient(to right,transparent,#000 40%);mask-image:linear-gradient(to right,transparent,#000 40%)}
}

/* 兑换码 */
.top-links{display:flex;gap:20px}
.code-status{font:14px var(--sans);color:var(--ink);letter-spacing:.02em}
.code-status b{font-weight:600}
.remain-note{text-align:center;font:14px var(--sans);color:var(--ink-2);margin-top:32px}
.redeem h3{font-size:28px;line-height:1.3;margin:4px 0 8px;color:var(--ink)}
.redeem p{color:var(--ink-2)}
.redeem input{display:block;width:100%;height:56px;margin:24px 0 8px;padding:0 16px;border:1px solid var(--ink);border-radius:var(--r);
  background:rgba(255,255,255,.5);font:600 20px var(--sans);letter-spacing:.12em;text-align:center;text-transform:uppercase;color:var(--ink)}
.redeem input::placeholder{color:#A39C90;font-weight:400;letter-spacing:.08em}
.redeem input:focus{outline:none;box-shadow:0 0 0 3px rgba(178,58,46,.2)}
.redeem .err{min-height:24px;font:14px var(--sans);color:var(--seal)}
.redeem .btn{width:100%;margin-top:8px}
.redeem .shop{margin-top:24px;padding-top:16px;border-top:1px solid var(--line);font-size:15px;text-align:center}
.redeem .shop a{color:var(--seal)}
.btn[disabled]{opacity:.5;cursor:wait}
.teaser .full{display:none!important}
.teaser-lock{margin-top:24px;padding:24px;border:1px dashed var(--accent);border-radius:var(--r);text-align:center}
.teaser-lock p{color:var(--ink-2);margin-bottom:16px}
.lock-note{margin-top:16px;padding:12px 14px;border-radius:var(--r);background:var(--paper-2);font-size:14px;color:var(--ink-2)}
.g-locked{cursor:default}
.g-locked .seal{border:1px dashed rgba(31,29,26,.3);box-shadow:none!important;color:var(--ink-2)}
.g-locked:hover{background:none}
.r-name.long{font-size:clamp(48px,13.5vw,72px);letter-spacing:.02em}
.actions .btn{white-space:nowrap}