:root{--bg:#fbfcff;--ink:#13172f;--muted:#65708c;--pink:#ff4fb8;--blue:#00c7ff;--violet:#8c6cff;--card:rgba(255,255,255,.78);--line:rgba(82,98,160,.16);--shadow:0 24px 70px rgba(67,76,140,.14)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:radial-gradient(circle at 18% 5%,rgba(255,79,184,.16),transparent 28%),radial-gradient(circle at 86% 8%,rgba(0,199,255,.18),transparent 32%),linear-gradient(180deg,#fff 0%,#f6f9ff 42%,#fff 100%);line-height:1.72;overflow-x:hidden}.bg-particles{position:fixed;inset:0;z-index:-1;pointer-events:none;background-image:radial-gradient(circle,rgba(255,79,184,.38) 0 2px,transparent 3px),radial-gradient(circle,rgba(0,199,255,.34) 0 2px,transparent 3px);background-size:86px 86px,116px 116px;animation:floatGrid 18s linear infinite}@keyframes 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