:root{--font-sans:"SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;--text:#141b2d;--muted:#697387;--bg:#f3f6fb;--card:#fff;--line:#e4e9f2;--brand:#1c4ed8;--brand-soft:#edf3ff;--mobile-bg:linear-gradient(180deg, #eef4ff 0%, #f7f9fd 22%, #f5f7fb 100%);--mobile-surface:#ffffffeb;--mobile-surface-strong:#fffffffa;--mobile-line:#cad5e6c2;--mobile-shadow:0 14px 34px #0f172a14;--mobile-shadow-soft:0 8px 22px #0f172a0d;--mobile-radius-lg:24px;--mobile-radius-md:18px;--mobile-radius-sm:14px}*{box-sizing:border-box}html,body,#app{overscroll-behavior:none;width:100%;min-height:100%}body{font-family:var(--font-sans);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;overflow:hidden}#app{height:100vh;overflow:hidden}