:root{--navy:#071a33;--blue:#1768e5;--teal:#10a88f;--violet:#7252d8;--text:#14243a;--muted:#65748a;--line:#dce7f4;--pale:#eef5ff}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#f8fbff;color:var(--text);font-family:"Microsoft YaHei UI","Microsoft YaHei",system-ui,sans-serif}a{text-decoration:none;color:inherit}.site-header{min-height:74px;max-width:1160px;margin:auto;padding:12px 24px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:#fff}.brand{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:900}.brand img{width:42px;height:42px;border-radius:11px;object-fit:cover}.official-tag,.back-home{padding:9px 14px;border:1px solid #d8e4f3;border-radius:999px;color:#3e5d84;font-size:14px;font-weight:800}.dark-header{max-width:none;padding-left:max(24px,calc((100vw - 1110px)/2));padding-right:max(24px,calc((100vw - 1110px)/2));background:var(--navy);color:#fff}.dark-header .back-home{border-color:#375270;color:#dbe8fa}.eyebrow{display:inline-block;color:#12a68e;font-size:14px;font-weight:900;letter-spacing:.14em}.section-heading{max-width:700px;margin-bottom:36px}.section-heading h2{margin:12px 0;font-size:clamp(31px,4vw,46px);line-height:1.2}.section-heading p{margin:0;color:var(--muted);line-height:1.8}.section-heading.centered{margin-left:auto;margin-right:auto;text-align:center}.home-hero{min-height:520px;padding:80px max(24px,calc((100vw - 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