:root{color:#0f172a;background:#f4f7fb;font-family:Inter,Helvetica Neue,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}html,body,#root{min-height:100%;margin:0}body{background:radial-gradient(circle at top left,rgba(99,102,241,.08),transparent 24%),linear-gradient(180deg,#f7f9fd,#f4f7fb 44%,#eef3fb)}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.page-shell{display:flex;flex-direction:column;gap:20px}.page-card{background:#fff;border:1px solid #e8eef8;border-radius:14px;box-shadow:0 10px 28px #0f172a0d}.section-header{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:4px 0 6px}.section-title{font-size:18px;line-height:28px;font-weight:700;margin:0;color:#0f172a}.section-subtitle{font-size:13px;line-height:19px;color:#64748b;margin:0}.theme-gradient-text{background:linear-gradient(135deg,#4338ca,#6366f1 45%,#0ea5e9);-webkit-background-clip:text;background-clip:text;color:transparent}.theme-accent-surface{background:linear-gradient(135deg,#4f46e51f,#0ea5e914);border:1px solid rgba(99,102,241,.18)}