:root{
  --bg1:#0d0820; --bg2:#1c1040; --gold:#e8c873; --gold2:#b8903e; --ink:#efe6ff; --muted:#b9a9d9;
  --ratio:1.725; /* 卡片高寬比 */
  --cw:68px; --ch:117px; --slotw:220px; --fanw:260px;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
html{background:#0d0820}
body::before{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(ellipse at 30% 10%, #2b1863 0%, transparent 55%),
             radial-gradient(ellipse at 80% 90%, #3a0f4f 0%, transparent 50%),
             linear-gradient(160deg,var(--bg1),var(--bg2) 60%,#0a0618)}
body{
  font-family:"Noto Serif TC","Songti TC","PMingLiU",serif; color:var(--ink);
  background:transparent; overflow-x:hidden;
  -webkit-tap-highlight-color:transparent;
}
#stars{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:none}
header,main,footer{position:relative;z-index:1}
main{z-index:2}
button{font-family:inherit;cursor:pointer}

.topbar{display:flex;align-items:center;gap:12px;padding:14px 22px;height:58px}
.brand{font-family:"Cinzel","Noto Serif TC",serif;font-weight:700;letter-spacing:.08em;color:var(--gold);font-size:18px;white-space:nowrap}
.brand small{font-size:11px;color:var(--muted);letter-spacing:.12em;margin-left:6px;font-weight:500}
.brand-star{display:inline-block;animation:spin 12s linear infinite}
.topic{flex:1;text-align:center;color:var(--muted);font-size:14px;letter-spacing:.1em}
.link-btn{background:none;border:1px solid rgba(232,200,115,.4);color:var(--gold);padding:6px 12px;border-radius:999px;font-size:13px}
.link-btn:hover{background:rgba(232,200,115,.12)}

.screen{display:none;min-height:calc(100vh - 58px - 44px);min-height:calc(100dvh - 58px - 44px);padding:10px 20px 20px;flex-direction:column;align-items:center}
.screen.active{display:flex;animation:fadeIn .6s ease}
.eyebrow{font-family:"Cinzel",serif;letter-spacing:.25em;color:var(--gold);font-size:12px;margin:18px 0 6px;text-transform:uppercase}
h1,h2{font-weight:700;letter-spacing:.08em;margin:6px 0 10px;text-align:center;text-shadow:0 0 24px rgba(200,160,255,.35)}
h1{font-size:clamp(26px,4vw,40px)} h2{font-size:clamp(20px,3vw,30px)}
.lead{color:var(--muted);margin:0 0 26px;text-align:center}
.intro{text-align:center}

.cats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;width:min(980px,100%)}
.cat{position:relative;display:flex;flex-direction:column;align-items:center;gap:8px;padding:26px 14px 22px;border-radius:18px;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));border:1px solid rgba(232,200,115,.28);color:var(--ink);
  transition:transform .25s, border-color .25s, box-shadow .25s, background .25s;backdrop-filter:blur(4px)}
.cat:hover,.cat.on{transform:translateY(-4px);border-color:var(--gold);box-shadow:0 10px 40px rgba(232,200,115,.18), inset 0 0 30px rgba(232,200,115,.06)}
.cat.on{background:linear-gradient(160deg,rgba(232,200,115,.16),rgba(255,255,255,.03))}
.cat-letter{position:absolute;top:10px;left:14px;font-family:"Cinzel",serif;color:var(--gold2);font-size:14px}
.cat-icon{font-size:34px;color:var(--gold);text-shadow:0 0 18px rgba(232,200,115,.6)}
.cat-name{font-size:22px;font-weight:700;letter-spacing:.2em}
.cat-desc{font-size:13px;color:var(--muted)}
.subs{margin-top:26px;text-align:center;animation:fadeIn .4s ease;width:min(760px,100%)}
.subs p{color:var(--muted);margin:0 0 12px}
.sub-row{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.sub{min-width:160px;padding:14px 20px;border-radius:14px;border:1px solid rgba(232,200,115,.45);background:rgba(20,10,45,.6);color:var(--ink);font-size:18px;letter-spacing:.1em;display:flex;flex-direction:column;align-items:center;gap:4px;transition:.2s}
.sub b{font-family:"Cinzel",serif;color:var(--gold);font-size:13px}
.sub small{font-size:12px;color:var(--muted);letter-spacing:.02em}
.sub:hover{background:rgba(232,200,115,.15);transform:translateY(-2px);box-shadow:0 6px 26px rgba(232,200,115,.2)}

.btn{border:none;border-radius:999px;padding:12px 28px;font-size:17px;letter-spacing:.15em;color:#2a1650;
  background:linear-gradient(135deg,#f8e6a8,#d6ab52 60%,#f3d68a);box-shadow:0 6px 24px rgba(232,200,115,.35);transition:transform .2s, box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(232,200,115,.5)}
.btn.ghost{background:transparent;color:var(--gold);border:1px solid var(--gold);box-shadow:none}
.btn.small{padding:7px 18px;font-size:15px}

/* 洗牌 */
.focus-title{max-width:640px}
.focus-topic{text-align:center;color:var(--gold);font-size:18px;letter-spacing:.15em;margin:0 0 8px}
.shuffle-stage{position:relative;width:min(340px,80vw);height:260px;margin:24px 0 10px}
.shuffle-stage .sc{position:absolute;left:50%;top:50%;width:110px;height:calc(110px * var(--ratio));margin:calc(-55px * var(--ratio)) 0 0 -55px;
  border-radius:9px;background:url(../img/back.svg) center/cover;box-shadow:0 6px 18px rgba(0,0,0,.55),0 0 0 1px rgba(232,200,115,.25)}
.breath{color:var(--muted);letter-spacing:.12em;animation:breath 4s ease-in-out infinite;margin:10px 0 18px;text-align:center}
#readyBtn{animation:fadeIn .6s ease}

/* 牌桌 */
#screen-table{position:relative;padding:0 12px 20px}
.table-hint{color:var(--muted);text-align:center;margin:4px 0 6px;letter-spacing:.06em;font-size:15px;min-height:1.4em}
.table{position:relative;display:grid;grid-template-columns:var(--fanw) 1fr;width:min(1200px,100%);flex:1;min-height:var(--stageh,560px);
  transition:grid-template-columns .8s ease}
.fan{position:relative;height:var(--stageh,560px);touch-action:none;user-select:none;-webkit-user-select:none;transition:opacity .6s}
.fan .fc{position:absolute;left:0;top:0;width:var(--cw);height:var(--ch);border-radius:calc(var(--cw) * .1);
  background:url(../img/back.svg) center/cover;box-shadow:0 2px 8px rgba(0,0,0,.6),0 0 0 1px rgba(232,200,115,.25);
  transition:transform .28s cubic-bezier(.2,.8,.2,1), box-shadow .28s, filter .28s;will-change:transform;pointer-events:none}
.fan .fc.hl{box-shadow:0 0 0 2px var(--gold),0 0 26px 6px rgba(232,200,115,.65),0 10px 30px rgba(0,0,0,.6);filter:brightness(1.15)}
.fan .fc.gone{visibility:hidden}
.fan.dim .fc{filter:brightness(.55) saturate(.7)}
.right{position:relative;display:flex;flex-direction:column;align-items:center;padding-top:clamp(10px,4vh,40px);min-width:0}
.slot{position:relative;width:var(--slotw);height:calc(var(--slotw) * var(--ratio));perspective:1400px;transition:width .8s ease,height .8s ease;cursor:default}
.slot.ready{cursor:pointer}
.slot-outline{position:absolute;inset:0;border:2px dashed rgba(232,200,115,.35);border-radius:14px;display:flex;align-items:center;justify-content:center;color:rgba(232,200,115,.5);letter-spacing:.3em;font-size:14px;
  background:radial-gradient(circle,rgba(232,200,115,.08),transparent 70%);transition:opacity .4s}
.slot.filled .slot-outline{opacity:0}
.card3d{position:absolute;inset:0;transform-style:preserve-3d;transition:transform 1.1s cubic-bezier(.3,.7,.2,1)}
.card3d.flipped{transform:rotateY(180deg)}
.card3d .face{position:absolute;inset:0;border-radius:14px;backface-visibility:hidden;-webkit-backface-visibility:hidden;overflow:hidden;
  box-shadow:0 14px 40px rgba(0,0,0,.6),0 0 0 1px rgba(232,200,115,.35)}
.card3d .back{background:url(../img/back.svg) center/cover}
.card3d .front{transform:rotateY(180deg);background:#f4ecd8}
.card3d .front img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .4s}
.card3d.reversed .front img{transform:rotate(180deg)}
.slot.glow .card3d .face{box-shadow:0 0 0 2px var(--gold),0 0 50px 8px rgba(232,200,115,.45),0 14px 40px rgba(0,0,0,.6)}
#flipBtn{margin-top:22px;animation:fadeIn .5s ease, pulse 2s ease-in-out 1s infinite}
.flyer{position:fixed;left:0;top:0;z-index:50;border-radius:12px;background:url(../img/back.svg) center/cover;box-shadow:0 0 0 2px var(--gold),0 0 40px rgba(232,200,115,.6);pointer-events:none}

.confirm{position:absolute;z-index:30;display:flex;align-items:center;gap:10px;padding:8px 10px 8px 16px;border-radius:999px;
  background:rgba(20,10,45,.92);border:1px solid var(--gold);box-shadow:0 8px 30px rgba(0,0,0,.5),0 0 24px rgba(232,200,115,.25);
  color:var(--ink);letter-spacing:.1em;white-space:nowrap;transform:translateY(-50%);animation:fadeIn .25s ease}
.confirm[hidden]{display:none}
.cf-q small{display:none}

/* 翻牌後 */
.table.revealed{grid-template-columns:0px 1fr}
.table.revealed .fan{opacity:0;pointer-events:none}
.reading{width:min(720px,100%);margin-top:26px;padding:26px 28px;border-radius:18px;background:linear-gradient(160deg,rgba(30,16,66,.88),rgba(16,9,38,.92));
  border:1px solid rgba(232,200,115,.35);box-shadow:0 20px 60px rgba(0,0,0,.45);animation:rise .8s ease both;line-height:1.85}
.reading .r-head{text-align:center;margin-bottom:14px}
.reading .r-name{font-size:28px;font-weight:700;letter-spacing:.15em;color:var(--gold)}
.reading .r-en{font-family:"Cinzel",serif;color:var(--muted);letter-spacing:.12em;font-size:14px}
.badge{display:inline-block;margin-top:8px;padding:3px 14px;border-radius:999px;font-size:14px;letter-spacing:.2em;border:1px solid}
.badge.up{color:#ffe7a6;border-color:#d9b55e;background:rgba(217,181,94,.12)}
.badge.rev{color:#e6c6ff;border-color:#a77ad9;background:rgba(167,122,217,.14)}
.kw{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:12px 0 4px}
.kw span{padding:3px 12px;border-radius:999px;background:rgba(255,255,255,.07);font-size:14px;color:var(--ink)}
.reading h3{font-size:16px;color:var(--gold);letter-spacing:.15em;margin:18px 0 4px;display:flex;align-items:center;gap:8px}
.reading h3::before{content:"✦";font-size:12px}
.reading p{margin:0;color:#e9e0fa}
.reading .meta{font-size:13px;color:var(--muted);margin-top:16px;padding-top:12px;border-top:1px dashed rgba(232,200,115,.25)}
.reading .actions{display:flex;justify-content:center;margin-top:20px}

.foot{text-align:center;color:rgba(185,169,217,.6);font-size:11.5px;padding:12px 16px 16px;line-height:1.5}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes rise{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes breath{0%,100%{opacity:.45}50%{opacity:1}}
@keyframes pulse{0%,100%{box-shadow:0 6px 24px rgba(232,200,115,.35)}50%{box-shadow:0 6px 40px rgba(232,200,115,.8)}}

@media (max-width:760px){
  .topbar{padding:10px 14px;height:50px}
  .brand{font-size:16px} .brand small{display:none}
  .topic{font-size:12px}
  .screen{min-height:calc(100dvh - 50px - 60px);padding:6px 14px 16px}
  .cats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .cat{padding:20px 10px 16px}
  .cat-icon{font-size:28px} .cat-name{font-size:19px}
  .sub{min-width:0;flex:1;padding:12px 8px;font-size:16px}
  .table-hint{font-size:13px}
  .reading{padding:20px 18px}
  .reading .r-name{font-size:24px}
  .btn{font-size:16px;padding:11px 24px}
  /* 手機：確定與翻牌按鈕固定在拇指可及的底部 */
  .confirm{position:fixed;left:12px;right:12px;bottom:calc(14px + env(safe-area-inset-bottom));top:auto;transform:none;
    justify-content:space-between;padding:10px 10px 10px 20px;border-radius:20px;font-size:17px;animation:rise .25s ease}
  .confirm .btn{min-height:52px;min-width:132px;font-size:18px}
  .cf-q small{display:block;font-size:12px;color:var(--muted);letter-spacing:.1em}
  #flipBtn,#readyBtn{position:fixed;left:12px;right:12px;bottom:calc(14px + env(safe-area-inset-bottom));min-height:58px;font-size:19px;z-index:40;margin:0}
  .fan .fc{transition:transform .16s ease-out, box-shadow .16s, filter .16s}
  .sub{min-height:64px}
  body[data-screen="screen-table"]:not(.revealed) .foot{visibility:hidden}
  body[data-screen="screen-shuffle"] .foot{visibility:hidden}
  .reading{font-size:16.5px;line-height:1.9}
  .reading .actions .btn{min-height:52px;min-width:200px}
}
@media (prefers-reduced-motion:reduce){*{animation-duration:.01ms!important;transition-duration:.01ms!important}}