:root{--primary:rgb(70,139,223);--primary-dark:#1f4e8c;--ink:#102033;--muted:#5f7188;--soft:#eef6ff;--line:#d9e8fb;--card:#fff;--shadow:0 14px 34px rgba(30,82,137,.10);--radius:22px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#eef7ff 0%,#fff 42%,#f7fbff 100%);font-size:16px;line-height:1.75}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.site-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border-bottom:1px solid rgba(70,139,223,.12)}.logo{display:flex;align-items:center;gap:8px;font-weight:800;color:var(--primary-dark);letter-spacing:.2px}.logo img{width:32px;height:32px;border-radius:10px}.mobile-nav{display:flex;gap:6px;align-items:center}.mobile-nav a{font-size:13px;padding:6px 8px;border-radius:999px;color:#486177}.mobile-nav a.active,.mobile-nav a:hover{background:var(--soft);color:var(--primary-dark)}.site-main{padding:0 16px 20px}.hero{padding:26px 0 16px}.hero-card{position:relative;overflow:hidden;border:1px solid rgba(70,139,223,.14);border-radius:28px;padding:24px 20px;background:linear-gradient(145deg,#fff 0%,#eef6ff 62%,#dcebff 100%);box-shadow:var(--shadow)}.hero-card:before{content:"";position:absolute;right:-80px;top:-80px;width:190px;height:190px;border-radius:50%;background:rgba(70,139,223,.16)}.eyebrow{display:inline-flex;gap:6px;align-items:center;padding:5px 10px;border-radius:999px;background:#fff;color:var(--primary-dark);font-size:12px;font-weight:700;border:1px solid var(--line)}h1{font-size:29px;line-height:1.22;margin:14px 0 12px;letter-spacing:-.5px;color:#0d2541}h2{font-size:22px;margin:0 0 12px;color:#102b49;line-height:1.35}h3{font-size:17px;margin:0 0 8px;color:#17375c}.lead{font-size:16px;color:#43576f;margin:0 0 18px}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;background:var(--primary);color:#fff!important;font-weight:800;box-shadow:0 10px 24px rgba(70,139,223,.28);border:0}.download-btn:after{content:"›";font-size:22px;margin-left:8px;line-height:1}.desktop-limited .download-btn{display:none!important}.hero-media{margin-top:18px;display:grid;grid-template-columns:1fr;gap:12px}.product-shot{padding:12px;border-radius:24px;background:rgba(255,255,255,.76);border:1px solid rgba(255,255,255,.85)}.trust-tags,.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.trust-tags span,.badge,.tag-row span{display:inline-flex;align-items:center;border-radius:999px;padding:6px 10px;background:#fff;border:1px solid var(--line);font-size:12px;font-weight:700;color:#315c8e}.section{padding:18px 0}.section-head{margin-bottom:12px}.section-head p{color:var(--muted);margin:0}.card{background:var(--card);border:1px solid rgba(70,139,223,.12);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:12px}.soft-card{background:linear-gradient(180deg,#f7fbff,#fff)}.feature-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.feature-grid .card{margin:0;padding:14px}.feature-icon{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;background:var(--soft);color:var(--primary);font-weight:900;margin-bottom:8px}.steps{counter-reset:step;display:grid;gap:10px}.step{position:relative;padding:15px 15px 15px 48px;background:#fff;border-radius:18px;border:1px solid var(--line);box-shadow:0 8px 20px rgba(30,82,137,.06)}.step:before{counter-increment:step;content:counter(step);position:absolute;left:14px;top:16px;width:24px;height:24px;border-radius:50%;display:grid;place-items:center;background:var(--primary);color:#fff;font-weight:800;font-size:13px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px;margin-bottom:10px}.faq-item h3{font-size:16px}.faq-item p{margin:0;color:var(--muted)}.cta{margin:20px 0;padding:22px;border-radius:26px;background:linear-gradient(135deg,var(--primary),#7fb8ff);color:#fff;box-shadow:0 16px 34px rgba(70,139,223,.24)}.cta h2,.cta p{color:#fff}.cta .download-btn{background:#fff;color:var(--primary)!important;box-shadow:none}.data-row{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-top:14px}.data{padding:12px;border-radius:16px;background:rgba(255,255,255,.72);border:1px solid rgba(255,255,255,.9);text-align:center}.data strong{display:block;color:var(--primary-dark);font-size:18px}.notice{border-left:4px solid var(--primary);background:#f3f8ff;border-radius:16px;padding:14px;color:#41566d}.site-footer{padding:8px 16px 28px}.footer-card{background:#102b49;color:#dbe8f7;border-radius:24px;padding:18px}.footer-brand{display:flex;gap:8px;align-items:center;color:#fff}.footer-brand img{width:30px;height:30px;border-radius:10px}.footer-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}.footer-links a{font-size:13px;color:#eaf3ff;background:rgba(255,255,255,.08);border-radius:999px;padding:5px 10px}.desktop-gate{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;background:linear-gradient(180deg,#edf6ff,#fff);padding:24px}.desktop-gate-card{max-width:420px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:28px;padding:30px;box-shadow:var(--shadow)}.gate-logo{width:58px;height:58px;margin:0 auto;border-radius:16px}.desktop-limited .site-header,.desktop-limited .site-main,.desktop-limited .site-footer{opacity:.18;pointer-events:none}.page-title{padding:24px 0 8px}.article p{color:#4b5f76;margin:0 0 14px}.article ul{padding-left:18px;color:#4b5f76}.single-download{text-align:center;margin:18px 0}@media (min-width:760px){body{max-width:520px;margin:0 auto;background:#eef7ff}.desktop-limited{max-width:none}.desktop-limited .site-header,.desktop-limited .site-main,.desktop-limited .site-footer{max-width:520px;margin-left:auto;margin-right:auto}.hero-card{padding:28px}.feature-grid{grid-template-columns:1fr 1fr}.site-main{padding-left:18px;padding-right:18px}}