:root{--primary:#ff8c00;--primary-light:#ffb347;--primary-bg:#fff5e6;--secondary:#fc3;--text:#333;--text-muted:#666;--border:#e5e5e5;--bg:#fafafa;--white:#fff;--error:#dc3545;--success:#28a745}*{box-sizing:border-box;margin:0;padding:0}body,html{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Yu Gothic,Hiragino Sans,Hiragino Kaku Gothic ProN,sans-serif;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer;border:none;background:none}.btn-primary{background:linear-gradient(135deg,var(--primary-light) 0,var(--secondary) 100%);color:#fff;padding:.875rem 2rem;border-radius:999px;font-weight:700;font-size:1rem;transition:all .2s;display:inline-block}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(255,140,0,.3)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-secondary{background:#fff;color:var(--primary);border:2px solid var(--primary);padding:.75rem 1.75rem;border-radius:999px;font-weight:600}.input{width:100%;padding:.875rem 1rem;border:2px solid var(--border);border-radius:12px;font-size:1rem;font-family:inherit;transition:border-color .2s}.input:focus{outline:none;border-color:var(--primary)}.card{background:#fff;border-radius:16px;padding:1.5rem;box-shadow:0 2px 8px rgba(0,0,0,.05)}