:root{--blue:#1565d8;--teal:#10bcae;--gold:#e8a90c;--bg:#f4f8fc;--card:#fff;--mut:#6b7a89;--line:#e3eaf0;--red:#e5484d}
  /* 字号阶梯与间距按 DESIGN §5.2/§5.3 定版：标题20/区块17/卡片标题16/正文15/次要14/辅助13/角标11；边距20、卡片圆角16、按钮圆角12、柔和阴影 */
  *{box-sizing:border-box;margin:0;padding:0}
  body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:#16283a;max-width:480px;margin:0 auto;min-height:100vh;font-size:15px;line-height:1.6}
  button{font:inherit;cursor:pointer;border:none;background:none}
  input,select,textarea{font:inherit;width:100%;padding:12px;border:1px solid var(--line);border-radius:12px;background:#fff}
  textarea{min-height:84px;resize:vertical}
  .topbar{position:sticky;top:0;z-index:20;background:var(--blue);color:#fff;padding:16px 20px;display:flex;justify-content:space-between;align-items:center}
  .topbar b{font-size:20px}
  .topbar small{display:block;color:#bcd2e6;font-size:13px}
  .view{padding:20px 20px 96px}