:root{--bg: #0f1115;--panel: #171a21;--border: #262b36;--text: #e5e7eb;--text-dim: #9ca3af;--accent: #f97316}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe UI,sans-serif}#root{min-height:100vh}.home{position:relative;max-width:720px;margin:0 auto;padding:15vh 24px 48px}.home-brand{color:var(--accent);font-weight:700;letter-spacing:.02em;margin-bottom:24px}.home-title{font-size:32px;margin:0 0 8px}.home-subtitle{color:var(--text-dim);margin:0 0 32px}.home-composer{display:flex;flex-direction:column;gap:12px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:16px}.home-composer textarea{background:transparent;border:none;outline:none;resize:vertical;color:var(--text);font:inherit;font-size:15px}.home-composer button{align-self:flex-end;background:var(--accent);color:#111;border:none;border-radius:8px;padding:10px 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