/* 知爱 · zhiai.store — ink, warm paper, a little gold leaf */
:root{
  --ink:#14110e;
  --ink-2:#1c1814;
  --ink-3:#26201a;
  --paper:#efe4cf;
  --paper-dim:#c9bba1;
  --muted:#9a8c76;
  --gold:#d2ab5f;
  --gold-2:#f1d792;
  --gold-3:#9c7635;
  --cinnabar:#b5432f;
  --serif:"Noto Serif SC","Songti SC","STSong","Source Han Serif SC","Source Han Serif CN","SimSun",serif;
  --latin:"Cormorant Garamond","Iowan Old Style","Palatino Linotype",Georgia,serif;
  --w:min(1120px,100% - 2.5rem);
  --ease:cubic-bezier(.2,.7,.2,1);
  --safe-b:env(safe-area-inset-bottom,0px);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;background:var(--ink)}
body{
  margin:0;min-height:100vh;color:var(--paper);
  font-family:var(--serif);font-weight:400;line-height:1.9;letter-spacing:.04em;
  background:
    radial-gradient(1200px 700px at 50% -10%,rgba(210,171,95,.10),transparent 60%),
    radial-gradient(900px 600px at 100% 60%,rgba(181,67,47,.05),transparent 60%),
    var(--ink);
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
/* paper grain */
body::before{
  content:"";position:fixed;inset:-50%;pointer-events:none;z-index:100;opacity:.07;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 .9  0 0 0 0 .75  0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
img,svg{display:block;max-width:100%}
a{color:inherit}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:2px solid var(--gold-2);outline-offset:4px;border-radius:4px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:1rem;top:-3rem;z-index:200;background:var(--paper);color:var(--ink);padding:.5rem 1rem;border-radius:4px;text-decoration:none}
.skip:focus{top:1rem}

.gold{
  background:linear-gradient(100deg,var(--gold-3) 0%,var(--gold) 25%,var(--gold-2) 45%,var(--gold) 60%,var(--gold-3) 100%);
  background-size:220% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;
  animation:leaf 9s ease-in-out infinite;
}
@keyframes leaf{0%,100%{background-position:100% 0}50%{background-position:0 0}}

/* top bar */
.topbar{
  position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:calc(.7rem + env(safe-area-inset-top,0px)) max(1.1rem,env(safe-area-inset-right)) .7rem max(1.1rem,env(safe-area-inset-left));
  background:linear-gradient(to bottom,rgba(20,17,14,.92),rgba(20,17,14,.6) 70%,transparent);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.mark{display:flex;align-items:center;gap:.6rem;text-decoration:none}
.seal{
  display:grid;place-items:center;width:1.9rem;height:1.9rem;border-radius:3px;
  background:var(--cinnabar);color:#f6e7d2;font-weight:900;font-size:1rem;letter-spacing:0;
  box-shadow:inset 0 0 0 2px rgba(246,231,210,.25);transform:rotate(-3deg);
}
.mark-en{font-family:var(--latin);font-style:italic;font-size:1.05rem;letter-spacing:.03em;color:var(--paper-dim)}
.topbar ul{display:flex;gap:1.3rem;list-style:none;margin:0;padding:0;font-size:.9rem}
.topbar nav a{text-decoration:none;color:var(--paper-dim);transition:color .3s}
.topbar nav a:hover{color:var(--gold-2)}
.pocket-count{
  display:inline-grid;place-items:center;min-width:1.35rem;height:1.35rem;padding:0 .3rem;margin-left:.15rem;
  border:1px solid var(--gold-3);border-radius:999px;font-family:var(--latin);font-size:.8rem;color:var(--gold-2);letter-spacing:0;
  transition:transform .4s var(--ease),background .4s;
}
.pocket-count.bump{transform:scale(1.35);background:rgba(210,171,95,.2)}
@media (max-width:640px){
  .mark-en{display:none}
  .topbar ul{gap:.95rem;font-size:.85rem}
  .topbar ul li:nth-child(3),.topbar ul li:nth-child(4){display:none}
}

/* hero */
.hero{
  position:relative;min-height:100svh;display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;padding:6rem 1.5rem calc(4rem + var(--safe-b));isolation:isolate;
}
.hero-glow{
  position:absolute;z-index:-1;width:min(80vw,620px);aspect-ratio:1;border-radius:50%;top:50%;left:50%;translate:-50% -58%;
  background:radial-gradient(circle,rgba(241,215,146,.16),rgba(210,171,95,.05) 40%,transparent 68%);
  animation:breathe 7s ease-in-out infinite;
}
@keyframes breathe{0%,100%{opacity:.75;scale:1}50%{opacity:1;scale:1.05}}
.hero-hours{font-size:.8rem;letter-spacing:.4em;color:var(--muted);margin:0 0 1.5rem}
.hero-title{
  margin:0;font-weight:900;line-height:1;letter-spacing:.12em;
  font-size:clamp(6rem,26vw,15rem);display:flex;gap:.06em;
}
.hero-title span{display:inline-block;opacity:0;translate:0 .15em;filter:blur(8px);animation:inkin 2.2s var(--ease) forwards,leaf 9s ease-in-out infinite}
.hero-title span:nth-child(2){animation-delay:.35s,0s}
@keyframes inkin{to{opacity:1;translate:0 0;filter:blur(0)}}
.hero-line{font-size:clamp(1.15rem,4.4vw,1.6rem);letter-spacing:.35em;margin:1.6rem 0 .6rem;padding-left:.35em;color:var(--paper)}
.hero-sub{font-size:clamp(.92rem,3.6vw,1.02rem);color:var(--paper-dim);max-width:26em;margin:.4rem 0 2.4rem;font-weight:300}
.hero-enter{
  text-decoration:none;font-size:.95rem;letter-spacing:.3em;padding:.85rem 1.6rem .85rem 1.9rem;
  border:1px solid rgba(210,171,95,.45);border-radius:999px;color:var(--gold-2);
  transition:background .4s,border-color .4s;
}
.hero-enter:hover{background:rgba(210,171,95,.1);border-color:var(--gold)}
.hero-enter span{display:inline-block;animation:drift 2.6s ease-in-out infinite}
@keyframes drift{50%{translate:0 3px}}
.hero-note{position:absolute;bottom:calc(1.5rem + var(--safe-b));font-size:.75rem;color:var(--muted);letter-spacing:.2em;margin:0}

/* rooms */
.room{width:var(--w);margin:0 auto;padding:clamp(5rem,12vw,9rem) 0 0}
.room-head{text-align:center;margin-bottom:clamp(2.5rem,6vw,4rem)}
.room-no{
  display:inline-flex;align-items:center;gap:.9rem;margin:0 0 .6rem;font-size:.8rem;letter-spacing:.5em;padding-left:.5em;color:var(--gold);
}
.room-no::before,.room-no::after{content:"";width:2.4rem;height:1px;background:linear-gradient(90deg,transparent,var(--gold-3))}
.room-no::after{transform:scaleX(-1)}
.room h2{margin:0;font-size:clamp(1.9rem,7vw,2.8rem);font-weight:600;letter-spacing:.2em;padding-left:.2em}
.room-intro{margin:1rem auto 0;color:var(--paper-dim);font-size:.95rem;font-weight:300;max-width:30em}

.reveal{opacity:0;translate:0 24px;transition:opacity 1.2s var(--ease),translate 1.2s var(--ease)}
.reveal.in{opacity:1;translate:0 0}

/* objects */
.objects{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:clamp(1rem,2.5vw,1.6rem)}
.obj{perspective:1200px}
.obj-card{
  position:relative;display:block;width:100%;aspect-ratio:3/4;border:0;padding:0;background:none;color:inherit;font:inherit;text-align:inherit;cursor:pointer;
  transform-style:preserve-3d;transition:transform 1s var(--ease);
}
.obj.flipped .obj-card{transform:rotateY(180deg)}
.face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;border-radius:6px;overflow:hidden;
  display:flex;flex-direction:column;padding:1.5rem 1.4rem 1.3rem;
}
.face-front{
  background:
    radial-gradient(120% 80% at 50% 0%,rgba(241,215,146,.09),transparent 60%),
    linear-gradient(180deg,var(--ink-3),var(--ink-2));
  border:1px solid rgba(210,171,95,.18);
  box-shadow:0 1px 0 rgba(255,240,210,.05) inset,0 20px 40px -24px rgba(0,0,0,.9);
  transition:border-color .5s;
}
.obj-card:hover .face-front{border-color:rgba(210,171,95,.45)}
.obj-glyph{flex:1;display:grid;place-items:center}
.obj-glyph svg{width:58%;height:auto;color:var(--gold);opacity:.9;transition:transform 1.2s var(--ease)}
.obj-card:hover .obj-glyph svg{transform:translateY(-4px) rotate(-2deg)}
.obj-name{font-size:1.15rem;font-weight:600;letter-spacing:.12em;margin:0}
.obj-price{margin:.35rem 0 0;font-size:.85rem;color:var(--paper-dim);display:flex;gap:.5rem;align-items:baseline}
.obj-price b{font-weight:400;color:var(--gold);font-size:.75rem;letter-spacing:.2em;flex:none}
.obj-no{position:absolute;top:1rem;right:1.1rem;font-family:var(--latin);font-style:italic;font-size:.9rem;color:var(--muted);letter-spacing:.05em}
.face-back{
  transform:rotateY(180deg);color:#2a2219;
  background:
    linear-gradient(rgba(140,110,60,.08) 1px,transparent 1px) 0 0/100% 1.9em,
    radial-gradient(130% 100% at 50% 0%,#f4ead6,#e6d6b7);
  box-shadow:0 20px 40px -24px rgba(0,0,0,.9);
}
.face-back h3{margin:0 0 .4rem;font-size:.8rem;letter-spacing:.4em;color:var(--cinnabar);font-weight:600}
.face-back p{margin:0;font-size:.93rem;line-height:1.9}
.face-back .spacer{flex:1}
.obj-tools{position:relative;display:flex;justify-content:space-between;align-items:center;margin-top:.8rem;gap:.6rem}
.obj-tools .hint{font-size:.75rem;color:var(--muted);letter-spacing:.15em}
.btn{
  font:inherit;font-size:.88rem;letter-spacing:.2em;cursor:pointer;color:var(--ink);background:var(--gold);
  border:1px solid var(--gold);border-radius:999px;padding:.6rem 1.3rem .6rem 1.5rem;
  transition:background .3s,color .3s,transform .3s var(--ease);
  min-height:44px;
}
.btn:hover{background:var(--gold-2)}
.btn:active{transform:scale(.97)}
.btn-ghost{background:transparent;color:var(--gold-2);border-color:rgba(210,171,95,.45)}
.btn-ghost:hover{background:rgba(210,171,95,.1)}
.btn-pocket{font-size:.8rem;padding:.45rem 1rem .45rem 1.15rem;min-height:40px}
.btn-pocket[aria-pressed="true"]{background:transparent;color:var(--cinnabar);border-color:var(--cinnabar)}
.obj-flip{
  font:inherit;font-size:.8rem;letter-spacing:.15em;background:none;border:0;color:#7a6650;cursor:pointer;padding:.4rem .2rem;min-height:40px;
  text-decoration:underline;text-underline-offset:4px;text-decoration-color:rgba(122,102,80,.4)
}

/* poems */
.poems{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid rgba(210,171,95,.15);border-bottom:1px solid rgba(210,171,95,.15)}
.poem{padding:2.6rem 1.6rem;display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:1.4rem;writing-mode:vertical-rl;min-height:24rem}
.poems .poem + .poem{border-right:1px solid rgba(210,171,95,.12)}
.poem h3{margin:0;font-size:1.05rem;font-weight:600;letter-spacing:.5em;color:var(--gold)}
.poem p{margin:0;font-size:1.02rem;line-height:2.3;letter-spacing:.25em;color:var(--paper);font-weight:300}
.poems{direction:rtl}
.poem{direction:ltr}
@media (max-width:860px){
  .poems{grid-template-columns:repeat(2,1fr)}
  .poems .poem:nth-child(3){border-right:0}
  .poems .poem:nth-child(n+3){border-top:1px solid rgba(210,171,95,.12)}
}
@media (max-width:520px){
  .poem{min-height:19rem;padding:2rem .4rem;gap:.9rem}
  .poem p{font-size:.95rem;line-height:2.1;letter-spacing:.2em}
}

/* lamp */
.lamp-wall{
  --x:50%;--y:50%;--r:130px;
  position:relative;border-radius:8px;overflow:hidden;min-height:clamp(26rem,60vh,34rem);
  border:1px solid rgba(210,171,95,.15);touch-action:none;cursor:none;user-select:none;-webkit-user-select:none;
  background:linear-gradient(180deg,#1f1a15,#17130f);
}
.lamp-text{
  position:absolute;inset:0;display:flex;flex-wrap:wrap;align-content:center;justify-content:center;gap:1.4rem 2.4rem;padding:2.5rem 1.5rem;
  color:#f5e3bd;text-align:center;
}
.lamp-text p{margin:0;font-size:clamp(1rem,3.6vw,1.3rem);letter-spacing:.18em;text-shadow:0 0 18px rgba(241,215,146,.35)}
.lamp-text p:nth-child(odd){transform:rotate(-1.5deg)}
.lamp-text p:nth-child(3n){font-size:clamp(1.2rem,4.6vw,1.7rem);color:var(--gold-2)}
.lamp-dark{
  position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle var(--r) at var(--x) var(--y),rgba(16,13,10,0) 0%,rgba(16,13,10,.35) 45%,rgba(16,13,10,.985) 100%);
  transition:opacity 1.4s var(--ease);
}
.lamp-wall::after{
  content:"";position:absolute;left:var(--x);top:var(--y);width:10px;height:10px;margin:-5px 0 0 -5px;border-radius:50%;
  background:var(--gold-2);box-shadow:0 0 18px 6px rgba(241,215,146,.55);pointer-events:none;opacity:0;transition:opacity .5s;
}
.lamp-wall.lit-pointer::after{opacity:1}
.lamp-wall.all-on .lamp-dark{opacity:0}
.lamp-wall.all-on{cursor:default}
.lamp-wall.all-on::after{opacity:0}
.lamp-actions,.pocket-actions{text-align:center;margin-top:1.4rem}

/* lot */
.lot{display:flex;flex-direction:column;align-items:center}
.lot-tube{background:none;border:0;padding:0;cursor:pointer;color:inherit;border-radius:12px}
.tube{position:relative;display:block;width:120px;height:220px}
.tube-body{
  position:absolute;bottom:0;left:0;right:0;height:150px;border-radius:10px 10px 14px 14px;
  background:
    repeating-linear-gradient(90deg,rgba(0,0,0,.12) 0 2px,transparent 2px 14px),
    linear-gradient(90deg,#6a3b22,#9b5a33 30%,#b57446 50%,#8b4f2c 75%,#5a311c);
  box-shadow:inset 0 6px 0 rgba(0,0,0,.25),0 18px 30px -12px rgba(0,0,0,.8);
  display:grid;place-items:center;
}
.tube-body span{
  writing-mode:vertical-rl;font-weight:900;font-size:1.4rem;color:#f3dfb5;padding:.4rem .25rem;border:1px solid rgba(243,223,181,.5);border-radius:2px;
}
.stick{position:absolute;bottom:90px;width:9px;height:110px;border-radius:3px 3px 0 0;background:linear-gradient(90deg,#c9a46a,#e6c88f,#b38d55);transform-origin:bottom center}
.stick::before{content:"";position:absolute;top:0;left:0;right:0;height:16px;border-radius:3px 3px 0 0;background:var(--cinnabar)}
.s1{left:30px;transform:rotate(-9deg);height:100px}
.s2{left:44px;transform:rotate(-3deg);height:118px}
.s3{left:56px;transform:rotate(1deg);height:106px}
.s4{left:68px;transform:rotate(5deg);height:120px}
.s5{left:80px;transform:rotate(10deg);height:98px}
.lot-tube.shake .tube{animation:shake .9s var(--ease)}
@keyframes shake{
  0%,100%{transform:rotate(0)}15%{transform:rotate(-12deg)}30%{transform:rotate(10deg)}45%{transform:rotate(-8deg)}60%{transform:rotate(6deg)}75%{transform:rotate(-3deg)}
}
.lot-hint{margin:1.2rem 0 0;font-size:.85rem;color:var(--muted);letter-spacing:.25em}
.lot-slip{
  margin-top:1.8rem;width:min(18rem,100%);padding:1.8rem 1.4rem 1.6rem;text-align:center;color:#2a2219;border-radius:3px;
  background:linear-gradient(180deg,#f4ead6,#e7d7b8);box-shadow:0 30px 50px -28px rgba(0,0,0,.9);
  position:relative;
}
.lot-slip::before{content:"";position:absolute;top:0;left:0;right:0;height:6px;background:var(--cinnabar);border-radius:3px 3px 0 0}
.lot-slip.show{animation:slip 1s var(--ease)}
@keyframes slip{from{opacity:0;translate:0 -18px;clip-path:inset(0 0 100% 0)}to{opacity:1;translate:0 0;clip-path:inset(0 0 0 0)}}
.lot-char{margin:0;font-size:4.4rem;line-height:1.1;font-weight:900;color:#1b1510}
.lot-line{margin:.8rem 0 0;font-size:.95rem;line-height:1.9}

/* receipt */
.receipt{
  width:min(22rem,100%);margin:0 auto;padding:2rem 1.6rem 2.4rem;color:#2a2219;position:relative;
  background:#f1e6d0;font-size:.92rem;line-height:1.8;
  box-shadow:0 30px 60px -30px rgba(0,0,0,.95);
  -webkit-mask:radial-gradient(circle 7px at 50% 100%,transparent 98%,#000) 0 0/16px 100% repeat-x;
          mask:radial-gradient(circle 7px at 50% 100%,transparent 98%,#000) 0 0/16px 100% repeat-x;
}
.receipt-head{margin:0;text-align:center;font-weight:900;letter-spacing:.4em;font-size:1.05rem;padding-left:.4em}
.receipt-meta{margin:.3rem 0 1rem;text-align:center;font-family:var(--latin);font-style:italic;color:#6d5c47;font-size:.9rem;letter-spacing:.04em}
.receipt-list{list-style:none;margin:0;padding:1rem 0;border-top:1px dashed #a8957a;border-bottom:1px dashed #a8957a}
.receipt-list li{display:grid;grid-template-columns:1fr auto;gap:.2rem .8rem;padding:.35rem 0;animation:print .7s var(--ease) both}
.receipt-list li span:last-child{grid-column:1 / -1;color:#6d5c47;font-size:.82rem;padding-left:1em}
@keyframes print{from{opacity:0;translate:0 -6px}}
.receipt-empty{margin:0;padding:1.2rem 0;text-align:center;color:#6d5c47;border-top:1px dashed #a8957a;border-bottom:1px dashed #a8957a}
.receipt-total{margin:1rem 0 0;font-weight:600;text-align:center}
.receipt-foot{margin:1.2rem 0 0;text-align:center;font-size:.8rem;color:#6d5c47}

/* end */
.end{
  text-align:center;padding:clamp(7rem,16vw,11rem) 1.5rem calc(3.5rem + var(--safe-b));margin-top:clamp(4rem,10vw,7rem);
  background:radial-gradient(600px 300px at 50% 0%,rgba(210,171,95,.08),transparent 70%);
}
.end-lamp{width:8px;height:8px;margin:0 auto 2.4rem;border-radius:50%;background:var(--gold-2);box-shadow:0 0 30px 10px rgba(241,215,146,.35);animation:breathe 5s ease-in-out infinite}
.end-line{font-size:clamp(1.05rem,4vw,1.3rem);letter-spacing:.2em;margin:0 0 2rem;line-height:2.1}
.end-credit{margin:0;color:var(--paper-dim);letter-spacing:.15em}
.end-credit strong{font-weight:900;font-size:1.15em;letter-spacing:.2em}
.end-small{margin:.6rem 0 0;color:var(--muted);font-size:.8rem;letter-spacing:.12em}
.end-domain{margin:2.6rem 0 0;font-family:var(--latin);font-style:italic;color:var(--muted);letter-spacing:.08em}

/* motion */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  .hero-title span{opacity:1;translate:none;filter:none}
  .reveal{opacity:1;translate:none}
}
@media (hover:none){
  .lamp-wall{cursor:default}
}
.obj.flipped .face-front,.obj:not(.flipped) .face-back{pointer-events:none}
.objects{grid-template-columns:repeat(3,1fr);max-width:980px;margin-inline:auto}
@media (max-width:820px){.objects{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){
  .objects{grid-template-columns:1fr}
  .obj-card{aspect-ratio:1/1.02}
  .obj-glyph svg{width:42%}
}
.pocket-count,.receipt-meta,.obj-no,.end-domain{font-variant-numeric:lining-nums}
.end{background:radial-gradient(600px 320px at 50% 35%,rgba(210,171,95,.07),transparent 70%)}
.room-intro,.hero-sub,.end-small{text-wrap:balance}