:root{--bg:#f5f7fb;--panel:rgba(255,255,255,.78);--panel-solid:#fff;--text:#0f172a;--muted:#64748b;--line:rgba(15,23,42,.08);--primary:#4f46e5;--primary-soft:rgba(79,70,229,.12);--primary-glow:rgba(79,70,229,.28);--success:#0f9f76;--error:#dc2626;--shadow:0 20px 60px rgba(15,23,42,.08);--radius-lg:28px;--radius-md:20px;--radius-sm:14px;--max-w:1080px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Plus Jakarta Sans,Inter,PingFang SC,Helvetica Neue,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(79,70,229,.1),transparent 28%),radial-gradient(circle at top right,rgba(59,130,246,.08),transparent 24%),linear-gradient(180deg,#f8faff,#f5f7fb 42%,#eef2ff);min-height:100vh}body:before{content:"";position:fixed;inset:0;pointer-events:none;background-image:linear-gradient(rgba(255,255,255,.45) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.45) 1px,transparent 1px);background-size:36px 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