:root{--bg: #0b1020;--bg-alt: #11172e;--card: #161d38;--border: #232c4d;--text: #eef1ff;--muted: #9aa3c7;--accent: #7c5cff;--accent-2: #00d4a0;--radius: 16px}*{box-sizing:border-box}html,body,#root{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}h1,h2,h3{line-height:1.2;margin:0}.page{max-width:1080px;margin:0 auto;padding:0 24px}.nav{display:flex;align-items:center;justify-content:space-between;padding:22px 0}.brand{font-size:20px;font-weight:800;letter-spacing:.5px}.nav-links{display:flex;align-items:center;gap:24px;color:var(--muted)}.nav-links a:hover{color:var(--text)}.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;cursor:pointer;border:1px solid transparent;transition:transform .12s ease,opacity .12s ease}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--accent);color:#fff}.btn-ghost{background:transparent;border-color:var(--border);color:var(--text)}.hero{text-align:center;padding:80px 0 64px}.hero-badge{display:inline-block;padding:6px 14px;border-radius:999px;background:#7c5cff26;color:var(--accent);font-size:13px;font-weight:700;margin-bottom:24px}.hero h1{font-size:clamp(36px,6vw,60px);font-weight:900}.accent{background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}.hero-sub{max-width:620px;margin:24px auto 0;color:var(--muted);font-size:18px}.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:32px}.hero-note{margin-top:18px;color:var(--muted);font-size:13px}.section{padding:64px 0}.section-alt{background:var(--bg-alt);margin:0 -24px;padding:64px 24px;border-radius:28px}.section h2,.cta h2{text-align:center;font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:40px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px}.steps,.features{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.step{position:relative;text-align:center}.step-num{position:absolute;top:16px;right:18px;color:var(--border);font-weight:900;font-size:28px}.step-icon{font-size:40px;margin-bottom:12px}.step h3,.feature h3{font-size:20px;margin-bottom:8px}.step p,.feature p{color:var(--muted);margin:0}.cta{text-align:center;padding:80px 0}.cta p{color:var(--muted);margin-top:0}.cta-form{display:flex;gap:10px;justify-content:center;margin-top:24px;flex-wrap:wrap}.cta-form input{width:280px;max-width:100%;padding:12px 16px;border-radius:999px;border:1px solid var(--border);background:var(--card);color:var(--text);font-size:15px}.cta-form input::placeholder{color:var(--muted)}.lang-switch{display:flex;align-items:center;gap:4px}.lang-btn{background:none;border:none;cursor:pointer;color:var(--muted);font-size:13px;font-weight:600;padding:4px 2px;transition:color .12s ease}.lang-btn:hover{color:var(--text)}.lang-active{color:var(--accent)!important}.lang-divider{color:var(--border);font-size:12px;-webkit-user-select:none;user-select:none}.footer{display:flex;align-items:center;justify-content:space-between;padding:32px 0;border-top:1px solid var(--border);color:var(--muted);font-size:14px}@media(max-width:760px){.steps,.features{grid-template-columns:1fr}.nav-links a:not(.btn){display:none}.lang-switch{display:flex}.section-alt{border-radius:0}}