:root{--navy:#0d2c4c;--deep:#09223a;--blue:#1775c4;--blue2:#238bda;--ink:#172c40;--muted:#64768a;--line:#dce5ec;--soft:#f1f6fa;--white:#fff}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;font-family:Inter,"Noto Sans SC","Microsoft Yahei",Arial,sans-serif;color:var(--ink);line-height:1.65;background:#fff}a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}button{cursor:pointer}.wrap{max-width:1200px;margin:auto;padding:0 28px}.top{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:inline-flex;align-items:center;gap:9px;font-size:20px;font-weight:900;letter-spacing:1.1px;color:var(--navy);line-height:1.05;white-space:nowrap}.brand 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