:root{--ink:#20303c;--muted:#657888;--paper:#fffdf7;--line:#20303c1f;--green:#0ca678;--blue:#2f80ff;--pink:#ff5f8f;--yellow:#ffd43b;--orange:#ff9f1c;--mint:#67e8c9;--radius:24px}*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{color:var(--ink);background:radial-gradient(circle at 12% 18%,#ff5f8f1f 0 18px,#0000 19px) 0 0/220px 220px,radial-gradient(circle at 85% 12%,#2f80ff21 0 24px,#0000 25px) 0 0/260px 260px,linear-gradient(90deg,#20303c0a 1px,#0000 1px) 0 0/34px 34px,linear-gradient(#20303c0a 1px,#0000 1px) 0 0/34px 34px,#fff8e8;margin:0;font-family:Trebuchet MS,PingFang SC,Microsoft YaHei,sans-serif;overflow-x:hidden}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{cursor:pointer;touch-action:manipulation}a,button,input,select{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:4px solid color-mix(in srgb, var(--blue) 55%, 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0;display:grid}.round-actions{justify-content:center}.memory-grid{grid-template-columns:repeat(4,1fr);max-width:620px}.memory-card{aspect-ratio:1;overflow-wrap:anywhere;font-size:1.05rem}.memory-card.open{color:#fff;background:var(--accent)}.finish-medal{width:88px;height:88px;color:var(--ink);background:var(--yellow);border:3px solid var(--ink);border-radius:50%;place-items:center;margin:0 auto 14px;display:grid}.finish-card p{color:var(--muted);margin:0;font-weight:900}.finish-actions{justify-content:center}.leader-page{max-width:1180px;padding:max(24px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(70px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left));margin:0 auto}.top-line span{font-weight:900}.leader-hero{padding:46px 0 24px}.leader-hero h1{letter-spacing:0;margin:0;font-size:clamp(2.2rem,7vw,5.2rem)}.leader-hero p{max-width:620px;color:var(--muted);line-height:1.7}.rank-table{margin-bottom:24px;padding:10px 18px;overflow:hidden}.main-rank 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env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) 36px max(14px, env(safe-area-inset-left))}.hub-nav,.play-nav,.top-line{gap:10px}.brand-mark strong{text-overflow:ellipsis;white-space:nowrap;max-width:56vw;overflow:hidden}.brand-mark span{border-radius:13px 16px 12px 18px;width:38px;height:38px}.hero-grid{gap:24px;margin-top:30px}.hero-copy h1{word-break:break-all;font-size:clamp(2.15rem,11vw,2.72rem);line-height:1.04}.hero-copy p{font-size:.98rem;line-height:1.65}.hero-actions,.finish-actions,.round-actions{grid-template-columns:1fr;display:grid}.primary-button,.secondary-button{width:100%;min-height:50px}.account-panel{border-radius:24px 30px 22px 28px;padding:18px;box-shadow:8px 8px #ff5f8f33}.profile-stats{grid-template-columns:repeat(3,minmax(0,1fr))}.dashboard-strip,.game-cards,.game-rank-grid,.grade-picker{grid-template-columns:1fr}.dashboard-strip{gap:10px;margin-top:-18px}.dashboard-strip 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strong{font-size:clamp(1.05rem,5.3vw,1.35rem)}.ready-card,.round-card,.finish-card{border-radius:22px 28px 20px 26px;min-height:min(540px,100dvh - 180px);padding:20px 14px}.ready-icon{border-radius:24px 32px 22px 30px;width:78px;height:78px;margin-bottom:14px;font-size:1.7rem}.ready-card h1,.finish-card h1{font-size:clamp(2.15rem,12vw,3.4rem)}.ready-card p,.finish-card span{margin-bottom:18px;line-height:1.6}.question-head h2{font-size:clamp(1.35rem,8vw,2.25rem)}.choice-grid{grid-template-columns:1fr;gap:10px;margin-top:18px}.choice-grid button,.sequence-answer button{min-height:62px;padding:10px 12px}.spot-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-top:18px}.spot-grid button{border-width:2px;min-height:0;font-size:clamp(1.8rem,12vw,3.4rem)}.sequence-answer{grid-template-columns:repeat(2,minmax(0,1fr))}.memory-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.memory-card{min-height:94px;font-size:.98rem}.leader-page{padding:max(16px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(46px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left))}.leader-hero{padding:30px 0 18px}.leader-hero h1{font-size:clamp(2.35rem,13vw,3.25rem)}.rank-table{border-radius:22px 28px 20px 26px;padding:8px 12px}.main-rank .rank-row{grid-template-columns:34px minmax(0,1fr) auto;gap:8px}.main-rank .rank-score{grid-column:2/-1;justify-self:start;font-size:1.15rem}}@media (max-width:390px){.brand-mark strong{max-width:48vw}.nav-pill{padding-inline:12px}.hero-copy h1{font-size:2.05rem}.profile-stats{grid-template-columns:1fr}.grade-buttons{grid-template-columns:repeat(2,minmax(0,1fr))}.card-meta{grid-template-columns:1fr}.play-nav strong{max-width:38vw}.memory-card{min-height:82px}}@media (hover:none){.primary-button:hover,.secondary-button:hover,.nav-pill:hover,.ghost-link:hover,.icon-link:hover,.game-card:hover,.choice-grid button:hover,.spot-grid button:hover,.sequence-answer button:hover,.memory-card:hover{transform:none}}