@property --page-bg{syntax:"<color>";inherits:true;initial-value:#f3efe7}@property --page-bg-deep{syntax:"<color>";inherits:true;initial-value:#e8e1d4}@property --accent{syntax:"<color>";inherits:true;initial-value:#315f50}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--page-bg:#f3efe7;--page-bg-deep:#e8e1d4;--surface:#fffdf8c7;--surface-strong:#fffefbf0;--text:#222923;--muted:#667069;--line:#22292321;--accent:#315f50;--accent-soft:#dbe8e1;--accent-text:#1e493b;--glow:#56867033;--shadow:0 30px 80px #29302a21;--radius-xl:38px;--radius-lg:28px;--radius-md:18px;--radius-sm:12px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans TC,sans-serif}*{box-sizing:border-box}html{background:var(--page-bg);scroll-behavior:smooth;min-height:100%}body{isolation:isolate;min-height:100vh;color:var(--text);background-color:var(--page-bg);margin:0;transition:--page-bg .9s,--page-bg-deep .9s,--accent .65s,color .5s,background-color .9s;overflow-x:hidden}body:before,body:after{content:"";z-index:0;pointer-events:none;position:fixed;inset:0}body:before{opacity:.22;mix-blend-mode:soft-light;background-image:radial-gradient(#1f2c2438 .55px,#0000 .75px),radial-gradient(#ffffff6b .65px,#0000 .85px);background-position:0 0,5px 6px;background-size:11px 11px,13px 13px;animation:24s linear infinite texture-drift}body:after{opacity:.95;background:radial-gradient(circle at 14% 12%, #ffffffe0, transparent 28%), radial-gradient(circle at 82% 18%, var(--glow), transparent 30%), radial-gradient(circle at 46% 84%, var(--page-bg-deep), transparent 38%);filter:blur(12px);animation:20s ease-in-out infinite alternate ambient-drift;inset:-20vh -18vw}body>*{z-index:1;position:relative}button,textarea{font:inherit}button{cursor:pointer}button:focus-visible,textarea:focus-visible{outline:3px solid color-mix(in srgb, var(--accent) 48%, transparent);outline-offset:4px}button:disabled{cursor:not-allowed;opacity:.45}[hidden]{display:none!important}.skip-link{z-index:40;color:#fff;background:#151915;border-radius:999px;padding:.75rem 1rem;position:fixed;top:-5rem;left:1rem}.skip-link:focus{top:1rem}.site-header{z-index:20;justify-content:space-between;align-items:center;width:min(1180px,100% - 38px);margin:0 auto;padding:18px 0 12px;display:flex;position:sticky;top:0}.site-header:before{content:"";z-index:-1;background:color-mix(in srgb, var(--page-bg) 68%, transparent);-webkit-backdrop-filter:blur(18px)saturate(1.08);backdrop-filter:blur(18px)saturate(1.08);border:1px solid #ffffff3d;border-radius:999px;position:absolute;inset:7px -14px 0;box-shadow:0 12px 38px #232b250f}.brand{color:var(--text);letter-spacing:.02em;background:0 0;border:0;border-radius:999px;align-items:center;gap:.7rem;padding:.45rem .6rem .45rem .35rem;font-size:1.02rem;font-weight:850;display:inline-flex}.brand-mark{background:var(--text);width:2.05rem;height:2.05rem;color:var(--page-bg);border-radius:50%;place-items:center;transition:transform .3s,color .7s;display:grid}.brand:hover .brand-mark{transform:rotate(24deg)}.brand-label{white-space:nowrap}.header-actions{gap:.5rem;display:flex}.icon-button,.text-button{color:var(--text);background:0 0;border:0;border-radius:999px;padding:.68rem .9rem;font-weight:760;transition:background-color .18s,transform .18s}.icon-button:hover,.text-button:hover{background:#ffffff61}.icon-button:active,.text-button:active{transform:scale(.97)}.view{width:min(1180px,100% - 38px);margin:0 auto}.landing-view{align-content:center;gap:clamp(34px,6vh,64px);min-height:calc(100svh - 74px);padding:clamp(7vh,10vh,120px) 0 70px;display:grid}.hero{max-width:850px}.eyebrow{color:var(--accent);letter-spacing:.19em;text-transform:uppercase;margin:0 0 13px;font-size:.75rem;font-weight:880}#landingTitle{letter-spacing:-.075em;text-wrap:balance;margin:0;font-family:Iowan Old Style,Noto Serif TC,Songti TC,Times New Roman,serif;font-size:clamp(4rem,9.4vw,8.2rem);font-weight:650;line-height:.87}.hero-line{display:block}.hero-line-nowrap{white-space:nowrap}.hero-copy{max-width:650px;color:var(--muted);text-wrap:pretty;margin:30px 0 0;font-size:clamp(1.05rem,1.8vw,1.3rem);line-height:1.9}.deck-grid{grid-template-columns:repeat(3,1fr);gap:18px;display:grid}.deck-button{--deck-color:#3e7c66;--deck-wash:#daece2c7;border-radius:var(--radius-xl);background:linear-gradient(150deg, #ffffffc7, transparent 70%), var(--deck-wash);min-height:285px;color:var(--text);text-align:left;border:1px solid #1f28221c;flex-direction:column;justify-content:space-between;padding:24px;transition:transform .32s cubic-bezier(.2,.75,.25,1),box-shadow .32s,border-color .32s;display:flex;position:relative;overflow:hidden;box-shadow:inset 0 1px #fffc,0 18px 50px #2c322d0d}.deck-button[data-accent=rose]{--deck-color:#a45063;--deck-wash:#f1d8ded1}.deck-button[data-accent=blue]{--deck-color:#496b9a;--deck-wash:#d7e2f1d6}.deck-button:after{content:"";border:1px solid color-mix(in srgb, var(--deck-color) 34%, transparent);opacity:.72;border-radius:50%;width:190px;height:190px;transition:transform .42s,opacity .32s;position:absolute;top:-74px;right:-58px}.deck-button:hover,.deck-button[aria-pressed=true]{border-color:color-mix(in srgb, var(--deck-color) 36%, transparent);box-shadow:0 26px 70px color-mix(in srgb, var(--deck-color) 19%, transparent);transform:translateY(-7px)}.deck-button:hover:after,.deck-button[aria-pressed=true]:after{opacity:1;transform:translate(-14px,18px)scale(1.2)}.deck-topline,.deck-cta{justify-content:space-between;align-items:center;display:flex}.deck-number{color:color-mix(in srgb, var(--deck-color) 74%, var(--text));letter-spacing:.13em;font-size:.78rem;font-weight:880}.deck-orb{background:var(--deck-color);width:13px;height:13px;box-shadow:0 0 0 8px color-mix(in srgb, var(--deck-color) 12%, transparent);border-radius:50%}.deck-copy{z-index:1;position:relative}.deck-button h2{letter-spacing:-.045em;margin:0 0 .65rem;font-family:Iowan Old Style,Noto Serif TC,Songti TC,serif;font-size:clamp(1.8rem,2.6vw,2.45rem);font-weight:680}.deck-button p{max-width:19rem;color:color-mix(in srgb, var(--text) 68%, transparent);margin:0;line-height:1.7}.deck-cta{color:color-mix(in srgb, var(--deck-color) 84%, var(--text));font-size:.86rem;font-weight:800}.deck-arrow{background:var(--deck-color);color:#fff;border-radius:50%;place-items:center;width:2.6rem;height:2.6rem;font-size:1.08rem;transition:transform .28s;display:grid}.deck-button:hover .deck-arrow{transform:rotate(-12deg)scale(1.06)}.landing-footnote{color:var(--muted);text-align:center;justify-content:center;align-items:center;gap:.65rem;font-size:.88rem;display:flex}.landing-footnote p{margin:0}.landing-footnote span{color:var(--accent)}.game-view{max-width:940px;min-height:100svh;padding:110px 0 90px;scroll-margin-top:58px}.game-topbar{justify-content:space-between;align-items:end;gap:24px;margin-bottom:30px;display:flex}.game-topbar h1{letter-spacing:-.06em;margin:0;font-family:Iowan Old Style,Noto Serif TC,Songti TC,serif;font-size:clamp(3rem,7vw,5.8rem);font-weight:650;line-height:.96}.level-tabs{scrollbar-width:thin;gap:8px;margin:0 0 18px;padding:3px 0 12px;display:flex;overflow-x:auto}.level-tab{border:1px solid var(--line);background:color-mix(in srgb, var(--surface) 68%, transparent);min-width:112px;color:var(--muted);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:999px;flex:none;justify-content:center;align-items:center;gap:.55rem;padding:.75rem 1rem;font-weight:780;transition:color .22s,background-color .22s,transform .22s;display:inline-flex}.level-tab:hover{transform:translateY(-2px)}.level-tab[aria-selected=true]{border-color:var(--accent);background:var(--accent);color:#fff;box-shadow:0 10px 30px color-mix(in srgb, var(--accent) 24%, transparent)}.level-index{letter-spacing:.08em;opacity:.72;font-size:.68rem}.question-card{border-radius:var(--radius-xl);background:linear-gradient(145deg, #ffffffb8, transparent 72%), var(--surface-strong);min-height:480px;box-shadow:var(--shadow), 0 1px 0 #ffffffe0 inset;-webkit-backdrop-filter:blur(22px)saturate(1.05);backdrop-filter:blur(22px)saturate(1.05);border:1px solid #ffffff8c;flex-direction:column;justify-content:center;padding:clamp(28px,6vw,64px);display:flex;position:relative;overflow:hidden}.question-card:before{content:"";background:linear-gradient(90deg, var(--accent), transparent);border-radius:999px;height:3px;position:absolute;top:0;left:clamp(28px,6vw,64px);right:clamp(28px,6vw,64px)}.question-card:after{content:"";background:radial-gradient(circle at 36% 34%, #ffffffbf, transparent 13%), var(--accent-soft);opacity:.78;filter:blur(2px);pointer-events:none;border-radius:50%;width:330px;height:330px;animation:12s ease-in-out infinite alternate card-orbit;position:absolute;top:-130px;right:-110px}.card-meta{z-index:1;color:var(--muted);letter-spacing:.08em;justify-content:space-between;gap:20px;font-size:.78rem;font-weight:850;display:flex;position:relative}.question-text{z-index:1;letter-spacing:-.045em;text-wrap:pretty;max-width:19ch;margin:clamp(55px,9vh,84px) 0;font-family:Iowan Old Style,Noto Serif TC,Songti TC,Times New Roman,serif;font-size:clamp(2rem,5vw,4.2rem);font-weight:650;line-height:1.24;position:relative}.reveal-panel{z-index:1;border:1px solid color-mix(in srgb, var(--accent) 12%, transparent);border-radius:var(--radius-md);background:color-mix(in srgb, var(--accent-soft) 82%, transparent);color:var(--accent-text);margin-top:12px;padding:19px 21px;animation:.3s ease-out both reveal-panel;position:relative}.reveal-panel.interaction{color:#4d493e;background:#f5efe0b8}.reveal-panel.action{color:#303c64;background:#e0e7f6bd}.panel-label{letter-spacing:.15em;margin-bottom:.45rem;font-size:.7rem;font-weight:880;display:block}.reveal-panel p{margin:0;font-weight:650;line-height:1.75}.primary-actions{grid-template-columns:1fr 1.28fr;gap:12px;margin-top:18px;display:grid}.primary-button,.secondary-button{border:1px solid #0000;border-radius:999px;min-height:58px;padding:.95rem 1.3rem;font-weight:850;transition:transform .18s,filter .18s,background-color .18s}.primary-button{background:var(--text);color:var(--page-bg);box-shadow:0 14px 38px #181f1a2e}.primary-button:hover{filter:brightness(1.12);transform:translateY(-2px)}.secondary-button{border-color:var(--line);background:color-mix(in srgb, var(--surface) 60%, transparent);color:var(--text);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.secondary-button:hover{background:#ffffff80;transform:translateY(-2px)}.optional-actions{flex-wrap:wrap;justify-content:center;gap:4px;min-height:52px;padding:11px 0;display:flex}.keyboard-hint{color:color-mix(in srgb, var(--muted) 78%, transparent);text-align:center;margin:6px 0 0;font-size:.78rem}.settings-dialog{background:color-mix(in srgb, var(--surface-strong) 92%, var(--page-bg));width:min(520px,100% - 24px);color:var(--text);border:1px solid #ffffff94;border-radius:30px;padding:0;box-shadow:0 32px 110px #1119134d}.settings-dialog[open]{animation:.24s ease-out both dialog-in}.settings-dialog::backdrop{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#141b1666}.settings-dialog form{padding:30px}.dialog-header,.dialog-footer{justify-content:space-between;align-items:center;gap:16px;display:flex}.dialog-header h2{letter-spacing:-.04em;margin:0;font-family:Iowan Old Style,Noto Serif TC,Songti TC,serif;font-size:2rem}.toggle-row{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;margin-top:24px;padding:20px 0;display:flex}.toggle-row strong,.toggle-row small{display:block}.toggle-row small{color:var(--muted);margin-top:5px;line-height:1.5}.toggle-row input{width:24px;height:24px;accent-color:var(--accent)}.dialog-footer{margin-top:28px}.toast{z-index:40;background:var(--text);color:var(--page-bg);box-shadow:var(--shadow);border-radius:999px;padding:.85rem 1.15rem;font-weight:780;position:fixed;bottom:26px;left:50%;transform:translate(-50%)}body[data-accent=mint]{--page-bg:#dce9e1;--page-bg-deep:#b9d0c2;--surface:#f5fcf7b8;--surface-strong:#fafdfbe8;--text:#17362b;--muted:#506a5e;--line:#17362b24;--accent:#2f765d;--accent-soft:#c8e1d4;--accent-text:#1d503d;--glow:#3e916f4a}body[data-accent=rose]{--page-bg:#f0dfe2;--page-bg-deep:#dfbbc2;--surface:#fff7f8b8;--surface-strong:#fffbfbeb;--text:#4b2630;--muted:#7a5660;--line:#4b263024;--accent:#a64e66;--accent-soft:#efccd5;--accent-text:#713347;--glow:#b9566f45}body[data-accent=blue]{--page-bg:#dde4ef;--page-bg-deep:#b9c8dc;--surface:#f6f9fdb8;--surface-strong:#fbfcffeb;--text:#20334e;--muted:#5b6c85;--line:#20334e24;--accent:#486e9e;--accent-soft:#cad9ed;--accent-text:#2e4d75;--glow:#496f9e47}body.reduce-motion *,body.reduce-motion :before,body.reduce-motion :after{scroll-behavior:auto!important;transition:none!important;animation:none!important}@keyframes texture-drift{0%{background-position:0 0,5px 6px}to{background-position:28px 17px,-18px 32px}}@keyframes ambient-drift{0%{transform:translate(-1.5%,-1%)scale(1)}50%{transform:translate(2%,1.5%)scale(1.035)}to{transform:translate(-.5%,2.5%)scale(1.02)}}@keyframes card-orbit{0%{transform:translate(0,0)scale(1)}to{transform:translate(-28px,24px)scale(1.1)}}@keyframes reveal-panel{0%{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}@keyframes dialog-in{0%{opacity:0;transform:translateY(8px)scale(.985)}to{opacity:1;transform:translateY(0)scale(1)}}@media (width<=840px){.deck-grid{grid-template-columns:1fr}.deck-button{min-height:215px}.landing-view{align-content:start;padding-top:9vh}.game-view{padding-top:90px}.question-card{min-height:430px}}@media (width<=560px){.site-header,.view{width:min(100% - 24px,1180px)}.site-header{padding-top:10px}.site-header:before{inset-inline:-5px}.landing-view{min-height:auto;padding-top:9vh}#landingTitle{font-size:clamp(3.55rem,18vw,5rem);line-height:.9}.hero-copy{margin-top:22px}.deck-button{border-radius:30px;min-height:200px;padding:21px}.game-view{min-height:auto;padding-top:78px}.game-topbar{align-items:start}.game-topbar h1{font-size:clamp(3rem,15vw,4.3rem)}.level-tab{min-width:102px}.question-card{border-radius:30px;min-height:400px;padding:30px 23px}.question-card:before{left:23px;right:23px}.question-text{margin:56px 0;font-size:clamp(2rem,9.5vw,3rem)}.primary-actions{grid-template-columns:1fr}.keyboard-hint{display:none}.settings-dialog form{padding:24px}.dialog-footer{flex-direction:column-reverse;align-items:stretch}.dialog-footer button{width:100%}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}