.global-alert{position:fixed;top:70px;left:50%;transform:translate(-50%) translateY(-100px);z-index:9999;display:flex;align-items:center;gap:10px;padding:14px 24px;background:#fff;border-radius:12px;box-shadow:0 8px 32px #00000026;border:2px solid transparent;font-size:15px;font-weight:600;cursor:pointer;opacity:0;transition:transform .4s cubic-bezier(.34,1.56,.64,1),opacity .3s ease}.global-alert--visible{transform:translate(-50%) translateY(0);opacity:1}.global-alert--success{border-color:#22c55e;color:#166534}.global-alert--success .global-alert__icon{background:#22c55e;color:#fff}.global-alert--error{border-color:#ef4444;color:#991b1b}.global-alert--error .global-alert__icon{background:#ef4444;color:#fff}.global-alert__icon{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;font-size:14px;font-weight:700}.global-alert__message{max-width:400px}.global-alert:hover{box-shadow:0 12px 40px #0003}html,body,#root{height:100%;margin:0}body{background:#fdfcf9}a{color:inherit}.app-shell{display:flex;flex-direction:column;height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.topbar{height:60px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 20px;justify-content:space-between;position:sticky;top:0;z-index:100}.brand{font-weight:900;font-size:20px;color:var(--brand);letter-spacing:-.5px}.topbar nav{display:flex;gap:20px;font-size:14px;font-weight:600;color:#4b5563}.topbar nav a{text-decoration:none;transition:color .2s}.topbar nav a:hover{color:#111827}main{flex:1;display:flex;flex-direction:column;padding:20px;min-height:0;overflow:auto}main.no-padding{padding:0}@media(max-width:1024px)and (orientation:landscape){.app-shell--game .topbar{display:none}.app-shell--game main.no-padding{overflow:hidden}}:root{--font-family: "Pretendard Variable", "Pretendard", "Noto Sans KR", "Apple SD 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#5c371c26}.btn{height:48px;border-radius:14px;border:none;font-size:16px;font-weight:700;cursor:pointer;transition:transform .1s,box-shadow .2s,background .2s}.btn-primary{background:var(--brand);color:#fff;box-shadow:0 12px 24px #5c371c40}.btn-primary:hover{background:var(--brand-dark)}.btn-primary:active{transform:translateY(1px)}.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--line)}.btn-outline:hover{border-color:var(--brand);color:var(--brand)}.actions{display:flex;gap:12px;margin-top:4px}.actions .btn{flex:1}.alert{display:flex;gap:10px;align-items:center;padding:12px 14px;border-radius:14px;font-size:14px;border:1px solid transparent}.alert-icon{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:13px;font-weight:700}.alert-error{background:var(--alert-error);border-color:#f2b4af}.alert-error 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36px}.actions{flex-direction:column}}.auth-footer{margin-top:auto;display:flex;flex-direction:row;align-items:center;justify-content:flex-end;gap:5px;flex-wrap:nowrap}.auth-footer__credit{font-size:12px;color:var(--text-secondary);opacity:.85;white-space:nowrap}.btn-small{height:28px;padding:0 10px;font-size:11px;border-radius:8px;box-shadow:inherit}.auth-footer__burger{text-decoration:none;display:inline-flex;align-items:center;justify-content:center;opacity:.85}.auth-footer__burger:hover{opacity:1}@supports (background: color-mix(in srgb,#000 50%,#fff)){.auth-footer__burger.btn-primary{background:color-mix(in srgb,var(--brand) 72%,#fff)}.auth-footer__burger.btn-primary:hover{background:color-mix(in srgb,var(--brand-dark) 72%,#fff)}}:root{--bg: #fffcf7;--panel: #ffffff;--border: #e5e7eb;--muted: #6b7280;--brand: #925528;--shadow: 0 12px 28px rgba(0, 0, 0, .06);--radius-lg: 16px;--radius-md: 10px;--gap: 16px;--board-w: 770px;--page-max: 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