:root{--bg:#F3FBFF;--white:#FFFFFF;--soft:#EAF8FF;--soft2:#F7FCFF;--blue:#22AEEA;--deep:#147FB8;--text:#1F2D3A;--muted:#5C6F82;--light:#8BA1B5;--line:rgba(34,174,234,.16);--shadow:0 14px 36px rgba(34,174,234,.12);--btn:linear-gradient(135deg,#6DE6FF 0%,#22AEEA 48%,#168DCC 100%);--footer:#0B3D5C}*{box-sizing:border-box}html,body{margin:0;min-height:100%;overflow-x:hidden;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif}a{text-decoration:none;color:inherit}img{display:block}.site-header{position:sticky;top:0;z-index:9999;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 8px 24px rgba(34,174,234,.10)}.desktop-header{max-width:1260px;margin:0 auto;min-height:74px;padding:0 22px;display:flex;align-items:center;justify-content:space-between;gap:22px}.logo img{max-height:52px;width:auto}.nav-core{display:flex;align-items:center;gap:10px;min-width:0}.nav-core a{color:var(--deep);background:rgba(34,174,234,.08);border:1px solid transparent;border-radius:999px;padding:10px 16px;font-weight:700;white-space:nowrap}.nav-core a:hover,.nav-core a.active{color:var(--blue);background:linear-gradient(135deg,rgba(109,230,255,.24),rgba(34,174,234,.12));border-color:var(--line)}.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}.panel-open{border:1px solid var(--line);background:#fff;color:var(--deep);font-weight:800;border-radius:999px;padding:10px 18px;cursor:pointer}.main-btn{display:inline-flex;align-items:center;justify-content:center;background:var(--btn);color:#fff;border-radius:999px;padding:11px 22px;font-weight:800;box-shadow:0 12px 26px rgba(34,174,234,.24);border:0}.main-btn:hover{transform:translateY(-1px);box-shadow:0 16px 36px rgba(34,174,234,.28)}.mobile-header{display:none}.panel-mask,.drawer-mask{position:fixed;inset:0;background:rgba(6,30,45,.38);opacity:0;visibility:hidden;transition:.25s;z-index:10000}.category-panel{position:fixed;right:0;top:0;width:min(440px,88vw);height:100vh;background:#fff;box-shadow:0 18px 48px rgba(34,174,234,.16);z-index:10001;transform:translateX(105%);transition:.28s;overflow-y:auto;padding:24px}.panel-on .category-panel{transform:translateX(0)}.panel-on .panel-mask{opacity:1;visibility:visible}.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.panel-head strong{font-size:22px;color:var(--blue)}.panel-head button,.drawer-head button{border:0;background:var(--soft);color:var(--deep);font-size:28px;border-radius:14px;width:42px;height:42px;cursor:pointer}.panel-groups{display:grid;gap:16px}.panel-groups section{background:var(--soft2);border:1px solid var(--line);border-radius:22px;padding:16px}.panel-groups h3{margin:0 0 10px;color:var(--blue)}.panel-groups a{display:block;padding:10px 0;color:var(--text);font-weight:800;border-top:1px solid rgba(34,174,234,.10)}.panel-groups span{display:block;color:var(--muted);font-weight:500;font-size:13px;margin-top:4px}.mobile-drawer{position:fixed;left:0;top:0;width:min(84vw,320px);height:100vh;background:linear-gradient(180deg,#fff,#F3FBFF);z-index:10001;transform:translateX(-105%);transition:.28s;overflow-y:auto;padding:18px}.drawer-on .mobile-drawer{transform:translateX(0)}.drawer-on .drawer-mask{opacity:1;visibility:visible}.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.drawer-head img{max-height:46px}.mobile-drawer nav{display:grid;gap:8px}.mobile-drawer nav a{padding:12px 14px;border-radius:16px;background:#fff;border:1px solid var(--line);color:var(--deep);font-weight:800}.container{width:min(1200px,calc(100% - 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