*{box-sizing:border-box;margin:0;padding:0}:root{--bg: #eaf0f8;--panel: #ffffff;--ink: #22304a;--muted: #6b7a93;--line: #d5deeb;--primary: #2f6fed;--primary-dark: #1f56c9;--dark: #1e3a8a;--danger: #d9344e;--boy-bg: #e1f0ff;--boy-line: #3b82f6;--girl-bg: #ffe6f0;--girl-line: #ec4899}html,body,#root{height:100%}body{font-family:PingFang SC,Microsoft YaHei,Noto Sans CJK SC,sans-serif;background:var(--bg);color:var(--ink);font-size:14px}button{font:inherit;cursor:pointer;border:1px solid #b9c8de;background:var(--panel);color:var(--ink);padding:6px 14px;border-radius:6px}button:hover{background:#e8f0fe;border-color:var(--primary);color:var(--primary-dark)}button.primary{background:var(--primary);border-color:var(--primary);color:#fff}button.primary:hover{background:var(--primary-dark);color:#fff}button.ghost{border-color:var(--line)}button.small{padding:2px 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