@font-face{font-family:Noto Sans TC;font-style:normal;font-weight:400;font-display:swap;src:url(/fonts/NotoSansTC-Regular.woff2) format("woff2")}:root{--bg: #0B0B0F;--surface: #16161D;--text: #F2F2F5;--text-dim: #9A9AA8;--border: #2A2A35;--radius: 16px;--font: "Noto Sans TC", system-ui, sans-serif;--accent: #ff5a36}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font)}[data-theme=roast]{--accent: #ff5a36}[data-theme=warmth]{--accent: #ffafa3}[data-theme=consultant]{--accent: #7fd1ff}[data-theme=meme]{--accent: #c8ff3d}[data-theme=reward]{--accent: #c77dff}.page{box-sizing:border-box;min-height:100vh;max-width:480px;margin:0 auto;padding:24px 20px 56px;display:flex;flex-direction:column;gap:20px}@media (min-width: 640px){.page{max-width:560px;padding-top:56px}}h1,p{margin:0}button{font-family:inherit}.btn{font:inherit;font-size:15px;font-weight:700;line-height:1;border-radius:999px;padding:13px 22px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;transition:opacity .15s ease,transform .1s ease}.btn:disabled{opacity:.45;cursor:not-allowed}.btn:not(:disabled):active{transform:scale(.97)}.btn--primary{background:var(--accent);border-color:var(--accent);color:var(--bg)}.btn--secondary{background:transparent;color:var(--text-dim)}.landing{align-items:center;justify-content:center;text-align:center;gap:16px}.landing__title{font-size:52px;font-weight:800;letter-spacing:.01em}.landing__tagline{color:var(--text-dim);font-size:16px;margin-bottom:8px}.landing__count{color:var(--text-dim);font-size:14px;margin-top:16px}.landing__count strong{color:var(--accent);font-weight:700;font-variant-numeric:tabular-nums}.landing__disclaimer{color:var(--text-dim);font-size:12px;line-height:1.7;margin-top:24px;max-width:320px}.username-input{width:100%}.username-input__row{display:flex;gap:8px}.username-input__field{flex:1;min-width:0;font:inherit;font-size:16px;padding:13px 14px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);color:var(--text)}.username-input__field:focus{outline:2px solid var(--accent);outline-offset:2px}.username-input__error{color:var(--accent);font-size:13px;margin-top:10px;text-align:left}.loading-screen{align-items:center;justify-content:center;text-align:center;gap:20px}.loading-screen__spinner{width:36px;height:36px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--accent);animation:suancui-spin .9s linear infinite}@keyframes suancui-spin{to{transform:rotate(360deg)}}.loading-screen__line{color:var(--text-dim);font-size:15px;max-width:320px}.error-state{align-items:center;justify-content:center;text-align:center;gap:20px}.error-state__message{font-size:17px;max-width:320px}.style-tabs{display:flex;flex-wrap:wrap;gap:8px;padding-bottom:4px}.style-tabs__tab{flex:1 1 calc(50% - 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