:root{--bg:#fffaf6;--card:#ffffff;--ink:#24243a;--muted:#6d6b80;--brand:#ff7b54;--brand2:#7c5cff;--line:#eee4dc;--soft:#fff0e8;--shadow:0 20px 60px rgba(36,36,58,.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;color:var(--ink);background:linear-gradient(180deg,#fffaf6 0,#f8fbff 45%,#fff 100%);line-height:1.72}a{color:inherit;text-decoration:none}img{max-width:100%;height:auto;display:block}.skip-link{position:absolute;left:-999px;top:10px;background:#111;color:#fff;padding:8px 12px;z-index:9}.skip-link:focus{left:10px}.site-header{position:sticky;top:0;z-index:8;background:rgba(255,250,246,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.header-inner{max-width:1180px;margin:auto;padding:14px 20px;display:flex;align-items:center;gap:24px}.brand-logo{display:flex;align-items:center;flex:0 0 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