:root{--primary:#1f4e79;--primary-dark:#153a5c;--accent:#2f80ed;--warm:#f2994a;--bg:#f7f9fc;--text:#1f2933;--muted:#667085;--line:#e4e9f2;--white:#fff;--shadow:0 18px 45px rgba(31,78,121,.12);--radius:22px}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,"Helvetica Neue",sans-serif;color:var(--text);background:var(--white);line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:min(1140px,calc(100% - 40px));margin:0 auto}.site-header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:14px;color:var(--text);font-weight:700}.brand img{width:161px;height:auto}.brand span{font-size:13px;color:var(--muted);border-left:1px solid var(--line);padding-left:14px}.main-nav{margin-left:auto;display:flex;align-items:center;gap:22px}.main-nav 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