*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;font-family:-apple-system,"PingFang TC","Noto Sans TC",sans-serif;background:linear-gradient(160deg,#fdf6e3,#e3efff);color:#23324a;overflow:hidden;user-select:none;-webkit-user-select:none}
.screen{display:none;position:absolute;inset:0;padding:max(20px,env(safe-area-inset-top)) 28px 24px}
.screen.active{display:flex}
#result{flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:14px}
.hero img{max-height:45vh;max-width:80vw;border-radius:24px;box-shadow:0 10px 30px #0002}
h1{font-size:clamp(32px,5vw,56px);margin:8px 0 0;color:#2b5797}
.sub{font-size:22px;margin:0;color:#556}
.big{font:inherit;font-size:28px;font-weight:700;padding:16px 48px;border:0;border-radius:999px;background:#ff7a45;color:#fff;box-shadow:0 6px 0 #d4572a;cursor:pointer}
.big:active{transform:translateY(4px);box-shadow:0 2px 0 #d4572a}
.link{font:inherit;font-size:20px;background:none;border:0;color:#2b5797;text-decoration:underline}
#mute{position:fixed;top:max(12px,env(safe-area-inset-top));right:16px;z-index:5;font-size:28px;background:#fff9;border:0;border-radius:50%;width:54px;height:54px}
#quiz{flex-direction:column;gap:14px}
header{display:flex;justify-content:space-between;align-items:center;font-size:24px;font-weight:700;padding-right:70px}
#streak{color:#e8590c;min-height:1em}
.body{flex:1;display:flex;gap:28px;min-height:0}
.pic{flex:1.15;display:flex;align-items:center;justify-content:center;min-width:0}
.pic img{max-width:100%;max-height:100%;border-radius:20px;box-shadow:0 8px 24px #0002;object-fit:contain;background:#fff}
.card{flex:1;display:flex;flex-direction:column;justify-content:center;gap:14px;background:#fff;border-radius:24px;padding:24px;box-shadow:0 8px 24px #0001}
.card h2{font-size:clamp(24px,2.8vw,34px);margin:0 0 6px;line-height:1.35}
#opts{display:grid;gap:12px}
.opt{font:inherit;font-size:clamp(20px,2.3vw,28px);text-align:left;min-height:64px;padding:12px 18px;border:3px solid #cfd8e6;border-radius:16px;background:#f7f9fc;color:inherit;cursor:pointer;transition:background .2s,border-color .2s}
.opt b{display:inline-block;width:1.6em;color:#2b5797}
.opt.right{background:#d3f9d8;border-color:#2f9e44}
.opt.wrong{background:#ffe3e3;border-color:#e03131}
.opt:disabled{cursor:default}
#next{align-self:center;margin-top:6px}
.shake{animation:shake .45s}
@keyframes shake{20%,60%{transform:translateX(-12px)}40%,80%{transform:translateX(12px)}}
.pop{animation:pop .5s}
@keyframes pop{50%{transform:scale(1.05)}}
.medal{font-size:120px;animation:bounce 1.2s infinite}
@keyframes bounce{50%{transform:translateY(-16px)}}
#title{font-size:44px;margin:0;color:#2b5797}
.final{font-size:34px;margin:0}
.final span{font-size:72px;font-weight:800;color:#ff7a45}
#detail{font-size:20px;color:#556;margin:0}
#fx{position:fixed;inset:0;pointer-events:none;z-index:4}
@media (orientation:portrait){.body{flex-direction:column}.pic{flex:0 0 38%}}
#home{padding:0;background:#1d2433;align-items:center;justify-content:center}
.homebg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center}
.homebtns{position:absolute;right:4%;bottom:5%;display:flex;flex-direction:column;align-items:center;gap:8px}
.homebtns .link{color:#fff;text-shadow:0 1px 4px #000a}
@media (max-aspect-ratio:5/4){.homebg{object-fit:contain}}