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*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--text);background:radial-gradient(circle at 82% -8%,rgba(33,105,182,.22),transparent 30%),linear-gradient(180deg,#050a11,#03070d 54%,#06101a);font:15px/1.75 "Microsoft YaHei UI","Segoe UI",sans-serif}body:before{position:fixed;inset:0;z-index:-1;opacity:.15;background-image:linear-gradient(rgba(82,171,224,.11) 1px,transparent 1px),linear-gradient(90deg,rgba(82,171,224,.11) 1px,transparent 1px);background-size:72px 72px;mask-image:linear-gradient(to bottom,#000,transparent 86%);content:""}a{color:inherit}button,input,select,textarea{font:inherit}.wrap{width:min(var(--max),calc(100% - 48px));margin:auto}.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line);background:rgba(3,7,13,.84);backdrop-filter:blur(22px)}.header-inner{display:flex;min-height:78px;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-icon{display:grid;width:38px;height:38px;place-items:center;border:1px solid rgba(80,221,255,.42);border-radius:11px;background:linear-gradient(145deg,rgba(80,221,255,.16),rgba(52,125,255,.05));box-shadow:0 0 28px rgba(65,196,237,.14)}.brand-icon svg{width:26px;height:26px;color:var(--cyan)}.brand strong{display:block;font-size:17px;letter-spacing:.03em}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:.18em}.main-nav{display:flex;align-items:center;gap:3px}.main-nav a{position:relative;padding:10px 13px;color:#b5c3cf;text-decoration:none;font-size:13px;font-weight:600}.main-nav a:after{position:absolute;left:13px;right:13px;bottom:3px;height:2px;transform:scaleX(0);background:var(--cyan);content:"";transition:.2s}.main-nav a:hover,.main-nav a.active{color:#fff}.main-nav a:hover:after,.main-nav a.active:after{transform:scaleX(1)}.header-action{display:inline-flex;min-height:40px;align-items:center;padding:6px 15px!important;border:1px solid rgba(80,221,255,.36);border-radius:9px;background:rgba(80,221,255,.08)}.menu-button{display:none;min-width:44px;height:40px;border:1px solid var(--line);border-radius:9px;color:#fff;background:var(--panel)}
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