:root{--s2-ink:#111827;--s2-muted:#5f6b7a;--s2-line:#dfe5ec;--s2-paper:#f6f8fb;--s2-white:#fff;--s2-blue:#2855d9;--s2-blue2:#173a9e;--s2-cyan:#dff8f4;--s2-radius:18px;--s2-shadow:0 18px 50px rgba(30,48,80,.09)}*{box-sizing:border-box}.s2-body{margin:0;background:var(--s2-white);color:var(--s2-ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;line-height:1.6}.s2-body a{color:inherit}.s2-container{width:min(1180px,calc(100% - 40px));margin-inline:auto}.s2-header{height:76px;padding:0 max(20px,calc((100vw - 1180px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--s2-line);background:rgba(255,255,255,.96);position:sticky;top:0;z-index:50}.s2-logo{font-weight:900;font-size:21px;letter-spacing:-.045em;text-decoration:none}.s2-logo span{color:var(--s2-blue)}.s2-header nav{display:flex;align-items:center;gap:28px}.s2-header nav 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