:root{--bg:#fffaf6;--card:#ffffff;--ink:#20233a;--muted:#6a6f85;--line:#ece6de;--brand:#ff7657;--brand2:#6655ff;--soft:#fff1e9;--green:#1aa879;--shadow:0 18px 50px rgba(33,34,54,.10)}*{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;background:linear-gradient(180deg,#fffaf6 0,#f6f7ff 48%,#fff 100%);color:var(--ink);line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.container{width:min(1160px,92vw);margin:0 auto}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.site-header{position:sticky;top:0;z-index:20;background:rgba(255,250,246,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(236,230,222,.8)}.header-inner{display:flex;align-items:center;gap:22px;padding:14px 0}.brand-link{display:flex;align-items:center;flex:0 0 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