@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;900&family=Noto+Serif+SC:wght@600;700;900&display=swap');
:root{color-scheme:dark;--bg:#101820;--panel:#18222b;--ink:#f5f1e8;--muted:#aeb7bb;--gold:#dfbd76;--line:#ffffff16}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:'Noto Sans SC',sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}button,.button,select{font:inherit}button,.button{border:1px solid var(--gold);background:var(--gold);color:#17212a;border-radius:8px;padding:.65rem 1rem;cursor:pointer;font-weight:700;display:inline-block}button:hover,.button:hover{filter:brightness(1.1)}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #dfbd76;outline-offset:5px}.secondary{background:transparent;color:var(--ink);border-color:#ffffff30}select{background:#16212a;color:var(--ink);border:1px solid #ffffff30;border-radius:8px;padding:.6rem}button:disabled{opacity:.45;cursor:wait}[hidden]{display:none!important}.topbar{max-width:1320px;margin:auto;padding:25px 48px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.brand{font-size:29px;font-weight:900;letter-spacing:-2px}.brand span{color:var(--gold);margin:0 4px}.brand small{font-size:12px;letter-spacing:2px;margin-left:18px}.header-note{color:var(--muted);font-size:12px;letter-spacing:3px}main{max-width:1320px;margin:auto;padding:0 48px}h1,h2,h3{margin:0;font-family:'Noto Serif SC',serif}h1{font-size:clamp(38px,4.6vw,66px);line-height:1.4;letter-spacing:-2px}h1 em{font-style:normal;color:var(--gold)}h2{font-size:26px}h3{font-size:22px}p{margin:.7rem 0;color:var(--muted)}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:48px;align-items:center;padding:76px 0 80px}.eyebrow{text-transform:uppercase;color:var(--gold);letter-spacing:3px;font-size:11px;font-weight:700;margin:0 0 16px}.lead{font-size:16px;max-width:520px;line-height:2;margin:24px 0}.hero-link{display:inline-flex;gap:44px;align-items:center;border-bottom:1px solid var(--gold);padding:12px 0;color:var(--gold);font-weight:700}.hero-link span{font-size:24px}.hero-art{position:relative;height:355px;display:flex;align-items:center;justify-content:center}.art-ring{position:absolute;width:310px;height:310px;border:1px solid #dfbd7629;border-radius:50%;box-shadow:0 0 0 25px #dfbd7606,0 0 0 65px #dfbd7603}.art-card{width:185px;height:255px;border-radius:17px;background:linear-gradient(160deg,#283746,#15222e);border:1px solid #dfbd7665;position:absolute;padding:20px;font:600 82px/1.4 Georgia;color:var(--gold);box-shadow:0 18px 80px #0006}.art-card span{display:block;font:12px/2 'Noto Sans SC',sans-serif;letter-spacing:2px}.art-card.front{transform:rotate(10deg) translateX(40px)}.art-card.back{transform:rotate(-15deg) translate(-55px,-20px);background:#252b2e;color:#aaa}.art-card i{display:block;font:normal 60px/1.2 Georgia;text-align:right;margin-top:20px}.art-caption{position:absolute;bottom:0;font-size:9px;letter-spacing:3px;color:var(--muted)}.account-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:22px;margin-bottom:84px}.panel{padding:30px 34px;background:var(--panel);border:1px solid var(--line);border-radius:14px}.panel p{font-size:13px;line-height:1.9}.adult{display:flex;gap:12px;align-items:center;font-size:13px;margin:22px 0}.adult input{accent-color:var(--gold);width:18px;height:18px}.quota{color:var(--gold);padding:12px 0}.note-panel{position:relative;background:linear-gradient(140deg,#283030,#19232a);padding-right:80px}.note-symbol{position:absolute;right:26px;top:22px;font-size:36px;color:var(--gold)}.section-title{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:26px}.section-title .eyebrow{margin-bottom:7px}.section-title p{font-size:12px}.mode-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:84px}.mode-card{border:1px solid var(--line);border-radius:12px;padding:25px;background:#18232b;transition:transform .2s,border-color .2s;display:flex;flex-direction:column;position:relative;min-height:320px}.mode-card:hover{transform:translateY(-6px);border-color:var(--gold)}.mode-number{color:#7b898f;font:12px monospace}.mode-icon{color:var(--gold);font-size:42px;line-height:1.5;margin:24px 0 16px}.mode-card p{font-size:13px;line-height:1.9}.mode-cta{font-size:12px;color:var(--gold);margin-top:auto;padding-top:22px}.library-tools{display:flex;gap:10px;flex-wrap:wrap}#my-library{padding-bottom:76px}.library-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}.empty{grid-column:1/-1;text-align:center;padding:50px 20px;border:1px dashed #ffffff25;border-radius:12px}.quiz-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:25px}.quiz-card h3{overflow-wrap:anywhere}.tag{display:block;font-size:10px;letter-spacing:2px;color:var(--gold);margin-bottom:14px}.quiz-card p{font-size:12px}.quiz-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.quiz-actions select{flex:1;min-width:140px}.section-title small{font:12px 'Noto Sans SC';color:var(--muted)}#portal-status{color:var(--gold)}footer{max-width:1320px;margin:auto;border-top:1px solid var(--line);padding:28px 48px;display:flex;align-items:center;justify-content:space-between;gap:24px}footer>span{font-weight:900;letter-spacing:2px;font-size:12px;color:var(--gold)}footer p,footer a{font-size:10px}.arena-account{display:flex;gap:18px;flex-wrap:wrap;align-items:center;padding:10px 20px;background:#13202b;color:#e8ddc6;font:14px/1.6 'Noto Sans SC',sans-serif;position:relative;z-index:10000}.arena-account a{font-weight:700;border-bottom:1px solid #dfbd76}.arena-export{background:#213c35;border:1px solid #dfbd76;color:#fff;padding:16px 20px;border-radius:14px;font-weight:700}#arena-source-count{font-size:13px;line-height:1.8;padding:5px 0}
@media(max-width:1000px){.mode-grid{grid-template-columns:repeat(2,1fr)}.hero{gap:10px}.hero-art{transform:scale(.85)}.account-grid{grid-template-columns:1fr 1fr}.panel{padding:25px}}@media(max-width:680px){main{padding:0 22px}.topbar{padding:20px 22px}.header-note{display:none}.hero{grid-template-columns:1fr;padding:50px 0;gap:30px}.hero-art{height:280px;transform:scale(.8);margin:-25px 0}.account-grid{grid-template-columns:1fr;margin-bottom:50px}.mode-grid{gap:12px;margin-bottom:50px}.mode-card{padding:20px;min-height:300px}.mode-card h3{font-size:18px}.section-title{align-items:start;flex-direction:column;gap:12px}.library-grid{grid-template-columns:1fr}footer{padding:25px 22px;flex-direction:column;align-items:start;gap:8px}.brand small{margin-left:12px}.panel h2{font-size:23px}h1{letter-spacing:-1px}.note-panel{padding-right:64px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}