:root{--navy: #112C6B;--navy-dark: #0B1E4A;--blue: #2F7CF6;--blue-light: #78B4FA;--yellow: #FDBA2F;--gray-blue: #6E7CA0;--text: #1F2733;--text-2: #55607A;--bg: #FFFFFF;--bg-alt: #F4F7FD;--card-border: #E5EBF6;--radius: 16px;--shadow: 0 8px 30px rgba(17, 44, 107, .08);--shadow-lg: 0 20px 60px rgba(17, 44, 107, .14)}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,-apple-system,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}.container{max-width:1140px;margin:0 auto;padding:0 24px}.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:box-shadow .3s}.nav.scrolled{box-shadow:0 2px 20px #112c6b1a}.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}.nav-brand{display:flex;align-items:center;gap:10px;text-decoration:none}.nav-logo{width:38px;height:38px}.nav-name{font-size:20px;font-weight:700;color:var(--navy);letter-spacing:1px}.nav-links{display:flex;align-items:center;gap:34px}.nav-links a{text-decoration:none;color:var(--text-2);font-size:15px;font-weight:500;transition:color .2s}.nav-links a:hover{color:var(--blue)}.nav-cta{background:var(--navy);color:#fff!important;padding:9px 22px;border-radius:999px;transition:background .2s,transform .2s}.nav-cta:hover{background:var(--blue);transform:translateY(-1px)}.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}.nav-toggle span{width:22px;height:2px;background:var(--navy);border-radius:2px}.hero{position:relative;padding:150px 0 90px;overflow:hidden}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(600px 400px at 85% 10%,rgba(47,124,246,.1),transparent 60%),radial-gradient(500px 380px at 8% 85%,rgba(253,186,47,.1),transparent 60%),linear-gradient(180deg,#f7faff,#fff)}.hero-inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}.eyebrow{display:inline-block;font-size:14px;font-weight:600;letter-spacing:2px;color:var(--blue);background:#2f7cf614;padding:6px 16px;border-radius:999px;margin-bottom:20px}h1{font-size:44px;line-height:1.3;color:var(--navy);font-weight:800;letter-spacing:.5px}.accent{color:var(--blue);position:relative}.accent:after{content:"";position:absolute;left:0;right:0;bottom:4px;height:10px;background:#fdba2f73;z-index:-1;border-radius:4px}.hero-sub{margin-top:22px;font-size:17px;color:var(--text-2);max-width:520px}.hero-actions{margin-top:36px;display:flex;gap:16px}.btn{display:inline-block;text-decoration:none;font-size:16px;font-weight:600;padding:14px 34px;border-radius:999px;transition:all .25s}.btn-primary{background:var(--navy);color:#fff;box-shadow:0 10px 24px #112c6b40}.btn-primary:hover{background:var(--blue);transform:translateY(-2px)}.btn-ghost{color:var(--navy);border:1.5px solid var(--card-border);background:#fff}.btn-ghost:hover{border-color:var(--blue);color:var(--blue)}.hero-visual{position:relative;display:flex;justify-content:center}.phone{width:300px;border-radius:40px;background:#10193a;padding:12px;box-shadow:var(--shadow-lg);position:relative}.phone-notch{position:absolute;top:22px;left:50%;transform:translate(-50%);width:110px;height:22px;background:#10193a;border-radius:12px;z-index:2}.phone-screen{background:#fafbfe;border-radius:30px;overflow:hidden;height:560px;display:flex;flex-direction:column}.app-header{display:flex;align-items:center;gap:10px;padding:40px 18px 14px;background:#fff;border-bottom:1px solid #EEF2F9}.app-logo{width:30px;height:26px;object-fit:contain}.app-title{font-weight:700;color:var(--navy);font-size:17px}.chat{padding:18px 14px;display:flex;flex-direction:column;gap:12px}.bubble{max-width:82%;padding:11px 14px;border-radius:16px;font-size:13px;line-height:1.6}.bubble.ai{background:#fff;border:1px solid #E8EDF7;color:var(--text);border-top-left-radius:4px}.bubble.user{align-self:flex-end;background:var(--navy);color:#fff;border-top-right-radius:4px}.chip-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:4px}.chip{font-size:12px;color:var(--blue);background:#2f7cf617;padding:6px 12px;border-radius:999px;border:1px solid rgba(47,124,246,.25)}.float-card{position:absolute;background:#fff;border-radius:14px;box-shadow:var(--shadow-lg);padding:14px 18px;font-size:13px;color:var(--text-2);display:flex;flex-direction:column;gap:6px}.float-card strong{color:var(--navy);font-size:14px}.float-card-1{left:-30px;top:90px;width:190px}.float-card-2{right:-16px;bottom:110px}.progress{height:8px;background:#edf1f9;border-radius:999px;overflow:hidden}.progress i{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--yellow));border-radius:999px}.stats{padding:10px 0 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34px;text-align:center}.footer-brand{display:flex;align-items:center;justify-content:center;gap:10px;color:#fff;font-weight:600;margin-bottom:16px}.footer-logo{width:30px;height:30px;background:#fff;border-radius:8px;padding:2px}.footer-line{font-size:13.5px;margin-top:6px}.footer-line a{color:#93a3c9;text-decoration:none}.footer-line a:hover{color:#fff}.contact-grid-2{grid-template-columns:1fr;max-width:420px;margin:0 auto}.step-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:960px;margin:0 auto}.step{background:#fff;border-radius:var(--radius);padding:34px 28px;box-shadow:var(--shadow);position:relative;overflow:hidden}.step-num{display:block;font-size:44px;font-weight:800;line-height:1;color:#2f7cf62e;margin-bottom:14px}.step h3{font-size:19px;color:var(--navy);margin-bottom:8px}.step p{font-size:14px;color:var(--text-2)}.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}@media 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