:root{--bg:#0b0d12;--card:#151922;--line:#262c38;--fg:#e8ecf4;--muted:#98a2b8;--accent:#5b7cfa;--warn:#f0b429}*{box-sizing:border-box}html,body{height:100%;margin:0}body{padding:max(24px, env(safe-area-inset-top)) 20px max(24px, env(safe-area-inset-bottom));background:radial-gradient(120% 90% at 50% 0%, #1a2030 0%, var(--bg) 60%);color:var(--fg);-webkit-font-smoothing:antialiased;place-items:center;font:16px/1.55 -apple-system,BlinkMacSystemFont,Pretendard,Apple SD Gothic Neo,Segoe UI,Roboto,sans-serif;display:grid}.card{border:1px solid var(--line);background:var(--card);text-align:center;border-radius:20px;width:100%;max-width:380px;padding:28px 24px 20px}.logo{border-radius:18px;margin-bottom:14px}h1{letter-spacing:-.01em;margin:0;font-size:22px}.sub{color:var(--muted);margin:4px 0 22px;font-size:14px}.actions{gap:10px;display:grid}.btn{border:1px solid var(--line);color:var(--fg);font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;background:#1d222d;border-radius:12px;padding:14px 16px;font-weight:600}.btn:active{transform:scale(.985)}.btn-primary{background:var(--accent);color:#fff;border-color:#0000}.installbar{z-index:10;padding:12px 16px calc(12px + env(safe-area-inset-bottom));border-top:1px solid var(--line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#151922eb;align-items:center;gap:12px;display:flex;position:fixed;bottom:0;left:0;right:0}.installbar-icon{border-radius:10px;flex:none}.installbar-text{text-align:left;gap:2px;min-width:0;display:grid}.installbar-text strong{font-size:14px;font-weight:600}.installbar-subline{color:var(--muted);align-items:center;gap:5px;font-size:12px;line-height:1.4;display:flex}.installbar-glyph{flex:none;width:15px;height:15px}.installbar-action{background:var(--accent);color:#fff;font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;border:0;border-radius:999px;flex:none;align-items:center;gap:6px;margin-left:auto;padding:9px 16px;font-size:14px;font-weight:600;display:flex}.installbar-action .installbar-glyph{width:16px;height:16px}.installbar-action:active{transform:scale(.97)}body:has(.installbar:not([hidden])){padding-bottom:110px}@media (display-mode:standalone),(display-mode:fullscreen),(display-mode:minimal-ui){.installbar{display:none}}.status{min-height:1.2em;color:var(--muted);margin:16px 0 0;font-size:13px}.status.warn{color:var(--warn)}.help{text-align:left;color:var(--muted);margin-top:18px;font-size:13px}.help summary{cursor:pointer;text-align:center;list-style:none}.help summary::-webkit-details-marker{display:none}.help ol{margin:10px 0 0;padding-left:18px}.help li+li{margin-top:6px}.foot{margin-top:18px}.linkish{color:var(--muted);font:inherit;cursor:pointer;background:0 0;border:0;font-size:13px;text-decoration:underline}