:root{--ink:#060a11;--panel:#0b111c;--line:#202a39;--blue:#1597ff;--blue2:#00c2ff;--white:#f5f8fb;--muted:#9aa8b9;--max:1280px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--ink);color:var(--white);font-family:Inter,"Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}p{color:var(--muted)}main{overflow:hidden}.site-header{position:fixed;z-index:50;top:0;left:0;right:0;height:82px;display:flex;align-items:center;padding:0 max(32px,calc((100vw - var(--max))/2));border-bottom:1px solid rgba(255,255,255,.12);transition:.3s}.site-header.scrolled{height:68px;background:rgba(6,10,17,.94);backdrop-filter:blur(14px)}.brand{display:flex;align-items:center;gap:11px;font-size:17px;font-weight:700;letter-spacing:.12em;white-space:nowrap}.brand b{color:var(--blue);font-weight:700}.brand-mark{width:36px;height:36px;display:grid;place-items:center;background:linear-gradient(135deg,var(--blue2),#175cff);font-weight:900;font-size:21px;clip-path:polygon(15% 0,100% 0,85% 100%,0 100%)}.site-nav{display:flex;align-items:center;gap:27px;margin-left:auto;font-size:13px}.site-nav a{color:#d7e0ea;transition:.2s}.site-nav a:hover{color:var(--blue2)}.header-actions{display:flex;align-items:center;gap:18px;margin-left:28px}.lang{font-size:12px;color:#c7d0db}.btn{display:inline-flex;justify-content:center;align-items:center;min-height:52px;padding:0 25px;background:linear-gradient(135deg,#128cff,#0068e8);color:#fff;font-size:13px;font-weight:700;letter-spacing:.04em;border:1px solid #2aa7ff;transition:.25s}.btn:hover{transform:translateY(-2px);box-shadow:0 12px 35px rgba(0,125,255,.28)}.btn-small{min-height:40px;padding:0 17px}.btn-ghost{background:rgba(7,12,21,.35);border-color:rgba(255,255,255,.35)}.nav-toggle{display:none}.hero{position:relative;min-height:850px;height:100vh;display:flex;align-items:center;padding:120px max(32px,calc((100vw - 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