:root{color-scheme:dark;--fs: 6vh;--lh: 1.45;--fg: #f1f3f6;--bg: #080a0e;--accent: #2b7fff;--surface: #11151c;--border: #252c38;--muted: #929cab}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{height:100%;margin:0;background:var(--bg);color:var(--fg);overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,Roboto,sans-serif}:lang(ja){font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Hiragino Kaku Gothic ProN,Yu Gothic UI,Yu Gothic,Meiryo,Noto Sans JP,Noto Sans CJK JP,sans-serif}:lang(ko){font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Apple SD Gothic Neo,Malgun Gothic,Noto Sans KR,Noto Sans CJK KR,sans-serif}:lang(zh-TW){font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang TC,Microsoft JhengHei,Noto Sans TC,Noto Sans CJK TC,sans-serif}button,input,select,textarea{font:inherit}button{min-height:40px;border:1px solid #303846;border-radius:8px;padding:9px 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108px}.app-header{display:flex;gap:24px;align-items:center;padding:0 24px;background:#0d1117;border-bottom:1px solid var(--border);z-index:20;min-width:0}.brand-lockup{display:flex;align-items:center;gap:14px;white-space:nowrap}.brand-lockup strong{font-size:18px;letter-spacing:-.6px}.privacy-badge{display:flex;align-items:center;gap:7px;font-size:11px;background:transparent;border-color:transparent;color:#95a79f}.privacy-badge svg{width:15px;height:15px;flex-shrink:0;fill:none;stroke:#72c69b;stroke-width:1.5}.header-promo{display:flex;flex:1;justify-content:center;min-width:0}.promo-strip{display:flex;align-items:center;gap:8px;min-width:0;max-width:520px;padding:6px 12px;border:1px solid var(--border);border-radius:999px;background:#101720;color:#c8d4e4;font-size:11px;text-decoration:none;white-space:nowrap;transition:border-color .15s,background .15s}.promo-strip:hover{border-color:#3a4a63;background:#141d29}.promo-strip 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20px}.landing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.landing-option{position:relative;min-height:46px;padding:10px 12px;font-size:14px;color:var(--fg);background:#171c25;border:1px solid var(--border);border-radius:10px;cursor:pointer}.landing-option:hover,.landing-option:focus-visible{border-color:#4d5f7a}.landing-option.detected{border-color:var(--accent);background:#16243c}.landing-option.detected:after{content:"✓";position:absolute;top:4px;right:7px;font-size:10px;color:var(--accent)}.landing-timer{height:2px;margin-top:18px;background:var(--border);border-radius:2px;overflow:hidden}.landing-timer:after{content:"";display:block;height:100%;width:100%;background:var(--accent);transform-origin:left;animation:landing-countdown 5s linear forwards}@keyframes landing-countdown{0%{transform:scaleX(1)}to{transform:scaleX(0)}}@media (prefers-reduced-motion: reduce){.landing-timer:after{animation:none}}