:root{--mv-bg: #f6f7fb;--mv-card: #ffffff;--mv-text: #1f2937;--mv-text-secondary: #6b7280;--mv-primary: #4f7cff;--mv-primary-soft: #eef2ff;--mv-border: #e5e7eb;--mv-radius: 14px}*{box-sizing:border-box}html,body,#app{margin:0;padding:0;min-height:100vh}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--mv-bg);color:var(--mv-text);-webkit-font-smoothing:antialiased}.aitool{--color-bg: #f5f7fa;--color-card: #ffffff;--color-border: #e5e7eb;--color-primary: #2563eb;--color-text: #1f2937;--color-muted: #6b7280}.aitool .page{max-width:960px;margin:0 auto;padding:24px 16px 48px}.aitool .card{background:var(--color-card);border:1px solid var(--color-border);border-radius:10px;padding:16px;margin-bottom:16px}.aitool .row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.aitool input,.aitool textarea{border:1px solid var(--color-border);border-radius:6px;padding:8px 10px;font-size:14px;outline:none}.aitool input:focus,.aitool textarea:focus{border-color:var(--color-primary)}.aitool button{border:1px solid var(--color-primary);background:var(--color-primary);color:#fff;border-radius:6px;padding:8px 14px;cursor:pointer;font-size:14px}.aitool button.ghost{background:#fff;color:var(--color-primary)}.aitool button.danger{background:#fff;color:#dc2626;border-color:#dc2626}.aitool table{width:100%;border-collapse:collapse;font-size:14px}.aitool th,.aitool td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--color-border)}.aitool .muted{color:var(--color-muted);font-size:13px}.aitool a.back-home{display:inline-block;border:1px solid var(--color-primary);border-radius:6px;padding:8px 14px;background:#fff;color:var(--color-primary);font-size:14px;text-decoration:none;cursor:pointer}.aitool a.back-home:hover{background:#eff6ff}