:root{--primary:rgb(70,139,223);--primary-dark:#236dbf;--text:#172033;--muted:#66758c;--bg:#f5f9ff;--card:#ffffff;--line:#e4edf9;--soft:#edf5ff;--radius:22px;--shadow:0 18px 45px rgba(42,101,176,.14)}*{box-sizing:border-box}html{font-size:16px;-webkit-text-size-adjust:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;background:linear-gradient(180deg,#eef6ff 0%,#fff 34%,#f7fbff 100%);color:var(--text);line-height:1.72}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.site-header{position:sticky;top:0;z-index:99;background:rgba(246,250,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(220,233,249,.8)}.topbar{height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 16px}.brand{display:flex;align-items:center;gap:9px;font-weight:800;letter-spacing:.2px}.logo{width:34px;height:34px;border-radius:10px;box-shadow:0 8px 18px rgba(70,139,223,.2)}.mini-download{height:36px;line-height:36px;padding:0 14px;border-radius:999px;background:linear-gradient(135deg,var(--primary),#83b7ff);color:#fff;font-size:13px;font-weight:700;box-shadow:0 10px 22px rgba(70,139,223,.24)}.nav-tabs{display:flex;gap:8px;overflow-x:auto;padding:0 14px 12px}.nav-tabs a{white-space:nowrap;padding:8px 12px;border-radius:999px;color:#65758c;font-size:14px;background:rgba(255,255,255,.65);border:1px solid rgba(226,236,249,.9)}.nav-tabs a.active{color:#fff;background:var(--primary);border-color:var(--primary)}main{padding:0 14px 18px}.banner{position:relative;overflow:hidden;margin:16px 0 18px;padding:24px 18px;border-radius:28px;background:radial-gradient(circle at 80% 10%,rgba(255,255,255,.9),transparent 30%),linear-gradient(145deg,#eaf4ff 0%,#fff 48%,#d9ebff 100%);box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.9)}.banner:before{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(70,139,223,.12);right:-70px;top:54px}.eyebrow{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:999px;background:#fff;color:var(--primary);font-size:12px;font-weight:800;border:1px solid #dcecff}.banner h1,.page-hero h1{margin:14px 0 10px;font-size:30px;line-height:1.18;letter-spacing:-.6px}.banner p,.page-hero p{margin:0;color:#526176}.hero-grid{position:relative;z-index:1}.app-shot{margin:22px auto 4px;max-width:260px;border-radius:30px;filter:drop-shadow(0 28px 38px rgba(42,101,176,.22))}.download-btn{display:inline-flex;align-items:center;justify-content:center;width:100%;min-height:50px;margin-top:18px;border:0;border-radius:16px;background:linear-gradient(135deg,var(--primary),#7fb6ff);color:#fff;font-size:16px;font-weight:800;box-shadow:0 14px 30px rgba(70,139,223,.28);letter-spacing:.2px}.section{margin:18px 0;padding:20px 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span{display:block;margin-top:4px;color:#6a778a;font-size:13.5px}.site-footer{padding:8px 14px 28px}.footer-card{padding:20px 16px;border-radius:24px;background:#172033;color:#d7e4f5}.footer-brand{display:flex;align-items:center;gap:9px}.footer-brand img{width:32px;height:32px;border-radius:9px}.footer-card p{color:#aebdd0;font-size:14px}.footer-links{display:flex;gap:12px;flex-wrap:wrap;margin:14px 0}.footer-links a{color:#fff;font-size:14px}.footer-card small{color:#8fa0b7}.notice{padding:14px;border-radius:18px;background:#fff8e8;border:1px solid #ffe2a3;color:#71531a}.quote{padding:16px;border-left:4px solid var(--primary);background:#f3f8ff;border-radius:14px;color:#48586e}.only-one{margin-top:10px;text-align:center;color:#718099;font-size:13px}@media (min-width:720px){body:before{content:"";position:fixed;inset:0;background:#f6f9ff;z-index:999998}body:after{content:"404 Not 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