:root{--primary:rgb(176, 219, 245);--primary-dark:#4b9ecd;--blue-deep:#12324a;--blue-soft:#eef8ff;--text:#1f2933;--muted:#667085;--line:#dbeaf3;--bg:#f6fbff;--shadow:0 12px 36px rgba(18,50,74,.08)}*{box-sizing:border-box}html,body{margin:0;padding:0;overflow-x:hidden}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.75}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{width:min(1200px,92vw);margin:0 auto}.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.mobile-header{height:62px;display:grid;grid-template-columns:52px 1fr 82px;align-items:center;padding:0 12px}.menu-button{width:44px;height:44px;border:0;background:#fff;display:flex;flex-direction:column;gap:5px;justify-content:center;align-items:center}.menu-button span{width:22px;height:2px;background:var(--blue-deep);border-radius:4px}.mobile-logo{justify-self:center}.mobile-logo img{max-height:34px;max-width:135px}.top-action,.main-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--primary);color:#0e2b40;border-radius:999px;font-weight:800;box-shadow:0 10px 22px rgba(75,158,205,.18);transition:.2s;padding:12px 22px}.top-action{padding:8px 15px;font-size:14px}.top-action:hover,.main-btn:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px)}.mobile-nav{display:none;padding:8px 18px 18px;background:#fff;border-top:1px solid var(--line)}.mobile-nav.open{display:grid;grid-template-columns:1fr 1fr;gap:10px}.mobile-nav a{padding:11px 12px;border-radius:14px;background:var(--blue-soft);font-size:14px;color:var(--blue-deep)}.desktop-header{display:none}.logo img{height:42px;max-width:170px}.desktop-nav{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}.desktop-nav a{padding:10px 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img{max-height:420px;margin:auto;border-radius:22px}.security-section{background:#fff}.responsible-play{background:linear-gradient(135deg,#e6f6ff,#f7fcff);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.checklist{padding-left:0;list-style:none;display:grid;gap:10px}.page-hero{padding:48px 0;background:linear-gradient(135deg,#fff,#eef8ff);border-bottom:1px solid var(--line)}.page-hero p{max-width:760px}.content-section{padding:44px 0}.content-grid{display:grid;gap:18px}.cta{padding:44px 0;background:#dff3ff;text-align:center}.site-footer{background:#102c42;color:#d9edf8;padding:42px 0 24px}.footer-grid{display:grid;gap:24px}.footer-logo{max-height:42px;margin-bottom:14px}.site-footer h3{color:#fff}.site-footer a{display:block;color:#d9edf8;margin:8px 0}.site-footer p,.footer-note{color:#c7d9e5}.footer-note{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:18px;font-size:13px}@media 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