:root{--bg: #060913;--bg-soft: #0a0f1f;--bg-elev: #0e1428;--text: #eef1f8;--text-2: #a6aec6;--text-3: #6b7490;--primary: #4f7cff;--violet: #5a7bff;--cyan: #38bdf8;--grad: linear-gradient(135deg, #4f7cff 0%, #3d6df5 48%, #38bdf8 100%);--grad-soft: linear-gradient(135deg, rgba(79, 124, 255, .16), rgba(56, 189, 248, .12));--border: rgba(255, 255, 255, .08);--border-strong: rgba(255, 255, 255, .14);--glass: rgba(255, 255, 255, .035);--glass-strong: rgba(255, 255, 255, .06);--glow: 0 0 0 1px rgba(79, 124, 255, .16), 0 6px 22px rgba(79, 124, 255, .18);--glow-cyan: 0 0 24px rgba(56, 189, 248, .16);--r-sm: 10px;--r-md: 16px;--r-lg: 22px;--r-xl: 30px;--maxw: 1200px;--font: "Inter", "SF Pro Display", -apple-system, "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Segoe UI", 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#0000004d}.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px)}.btn-ghost{color:var(--text);background:var(--glass);border-color:var(--border-strong)}.btn-ghost:hover{background:var(--glass-strong);border-color:#ffffff3d;transform:translateY(-2px)}.btn-lg{padding:16px 34px;font-size:16px;border-radius:14px}.card{background:var(--glass);border:1px solid var(--border);border-radius:var(--r-md);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:border-color .25s ease,transform .25s ease,box-shadow .25s ease}.bg-aurora{position:fixed;top:0;right:0;bottom:0;left:0;z-index:-2;overflow:hidden;pointer-events:none}.bg-aurora:before,.bg-aurora:after{content:"";position:absolute;width:640px;height:640px;border-radius:50%;filter:blur(120px);opacity:.42}.bg-aurora:before{background:radial-gradient(circle,rgba(79,124,255,.42),transparent 70%);top:-180px;left:-120px;animation:drift 18s ease-in-out infinite 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var(--border-strong);display:grid;place-items:center;color:var(--text-2);font-size:13px;font-weight:600}.mock-tip{font-size:13px;color:var(--text-3);margin-bottom:16px}@media(max-width:1080px){.nav-links{display:none}}@media(max-width:900px){.features-grid,.steps{grid-template-columns:1fr}.hero-stats{gap:28px}}@keyframes gradShift{0%,to{background-position:0% center}50%{background-position:100% center}}@keyframes pulse{0%,to{box-shadow:0 0 12px var(--cyan)}50%{box-shadow:0 0 20px var(--cyan),0 0 40px #22d3eea6}}@keyframes borderFlow{0%{background-position:0% 50%}to{background-position:200% 50%}}.hero-badge .dot{animation:pulse 2s ease infinite}.feature-card:before,.step:before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--grad);background-size:200% auto;opacity:0;transition:opacity .3s ease}.feature-card:hover:before,.step:hover:before{opacity:1;animation:borderFlow 2s linear infinite}.feature-card .ic{transition:box-shadow .3s ease,transform .3s 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