:root{
    --primary: rgb(70,139,223);
    --primary-dark: #255fba;
    --primary-soft: #eef6ff;
    --primary-light: #dcecff;
    --text: #172033;
    --muted: #64748b;
    --line: rgba(70,139,223,.18);
    --card: rgba(255,255,255,.92);
    --shadow: 0 14px 36px rgba(26,68,128,.10);
    --radius: 22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    color:var(--text);
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
    font-size:16px;
    line-height:1.75;
    background:
        radial-gradient(circle at 8% 0%, rgba(70,139,223,.18), transparent 32%),
        linear-gradient(180deg,#f6fbff 0%,#ffffff 46%,#eef6ff 100%);
    min-height:100vh;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.site-header{
    position:sticky;
    top:0;
    z-index:20;
    backdrop-filter: blur(16px);
    background:rgba(248,252,255,.88);
    border-bottom:1px solid rgba(70,139,223,.12);
}
.header-inner{
    width:min(100%, 760px);
    margin:0 auto;
    padding:12px 16px 10px;
    display:flex;
    align-items:center;
    gap:12px;
    justify-content:space-between;
}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;color:#183966;letter-spacing:.2px;white-space:nowrap}
.logo{width:34px;height:34px;border-radius:12px;box-shadow:0 8px 18px rgba(70,139,223,.20)}
.mobile-nav{display:flex;align-items:center;gap:6px;overflow-x:auto;white-space:nowrap;padding-bottom:2px;scrollbar-width:none}
.mobile-nav::-webkit-scrollbar{display:none}
.mobile-nav a{font-size:13px;color:#42627d;padding:7px 10px;border-radius:999px;background:rgba(255,255,255,.52);border:1px solid transparent}
.mobile-nav a.active,.mobile-nav a:hover{color:var(--primary-dark);border-color:rgba(70,139,223,.18);background:rgba(70,139,223,.08)}
.desktop-access-note{width:min(100%,760px);margin:0 auto 10px;padding:10px 16px;color:#36546d;font-size:13px;background:rgba(255,255,255,.78);border-top:1px solid rgba(70,139,223,.10)}
.site-main{width:min(100%,760px);margin:0 auto;padding:18px 16px 36px}
.hero{position:relative;overflow:hidden;border-radius:30px;padding:24px 18px;background:linear-gradient(145deg,#ffffff 0%,#eff7ff 56%,#e4f0ff 100%);box-shadow:var(--shadow);border:1px solid rgba(70,139,223,.16)}
.hero:before{content:"";position:absolute;inset:-90px -110px auto auto;width:220px;height:220px;border-radius:999px;background:rgba(70,139,223,.16)}
.hero-copy{position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:6px;color:var(--primary-dark);font-weight:700;font-size:12px;padding:5px 10px;border-radius:999px;background:rgba(70,139,223,.10);border:1px solid rgba(70,139,223,.16);margin-bottom:12px}
h1{font-size:30px;line-height:1.18;margin:0 0 12px;color:#102747;letter-spacing:-.8px}
h2{font-size:22px;line-height:1.3;margin:0 0 12px;color:#142b4b;letter-spacing:-.3px}
h3{font-size:17px;margin:0 0 6px;color:#15345a}
p{margin:0 0 12px;color:#4e6076}.lead{font-size:17px;color:#405771;margin-bottom:18px}.muted{font-size:14px;color:var(--muted)}
.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:999px;background:var(--primary);color:#fff;font-weight:800;box-shadow:0 12px 24px rgba(70,139,223,.28);border:1px solid rgba(255,255,255,.35);letter-spacing:.3px}.download-btn:active{transform:translateY(1px)}
.desktop-client .download-btn{display:none!important}
.hero-visual{position:relative;margin-top:24px;display:grid;grid-template-columns:1fr;place-items:center}.hero-visual .app-shot{width:min(78%,320px);filter:drop-shadow(0 24px 32px rgba(30,70,130,.18));border-radius:28px}.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0 0}.badge{display:inline-flex;align-items:center;gap:6px;padding:7px 10px;border-radius:999px;color:#264e78;background:rgba(255,255,255,.8);border:1px solid rgba(70,139,223,.15);font-size:12px;font-weight:700}.section{margin-top:22px;padding:22px 0}.section-header{margin-bottom:14px}.section-header p{font-size:15px}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;margin-bottom:12px}.card.soft{background:linear-gradient(145deg,#ffffff 0%,#f1f8ff 100%)}.feature-grid{display:grid;grid-template-columns:1fr;gap:12px}.feature-card{background:rgba(255,255,255,.88);border:1px solid rgba(70,139,223,.14);border-radius:20px;padding:16px;box-shadow:0 10px 26px rgba(31,77,134,.07)}.feature-card .icon{width:36px;height:36px;border-radius:14px;background:rgba(70,139,223,.12);display:grid;place-items:center;color:var(--primary-dark);font-weight:900;margin-bottom:10px}.data-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.data-card{padding:14px;border-radius:18px;background:#fff;border:1px solid rgba(70,139,223,.13);box-shadow:0 8px 20px rgba(31,77,134,.06)}.data-card strong{display:block;font-size:22px;color:var(--primary-dark);line-height:1.2}.data-card span{font-size:12px;color:var(--muted)}.steps{display:grid;gap:10px;counter-reset:step}.step{position:relative;padding:15px 15px 15px 52px;border-radius:18px;background:#fff;border:1px solid rgba(70,139,223,.14)}.step:before{counter-increment:step;content:counter(step);position:absolute;left:15px;top:16px;width:25px;height:25px;border-radius:9px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px}.faq-list{display:grid;gap:10px}.faq-item{background:#fff;border:1px solid rgba(70,139,223,.14);border-radius:20px;padding:16px;box-shadow:0 8px 20px rgba(31,77,134,.06)}.faq-item h3{font-size:16px}.notice{padding:16px;border-radius:20px;background:linear-gradient(145deg,#edf6ff,#ffffff);border:1px solid rgba(70,139,223,.16);color:#36546d}.page-hero{border-radius:28px;padding:24px 18px;background:linear-gradient(145deg,#ffffff,#edf6ff);box-shadow:var(--shadow);border:1px solid rgba(70,139,223,.16);margin-bottom:20px}.page-hero h1{font-size:28px}.inline-list{padding-left:18px;margin:8px 0 0;color:#4d6075}.inline-list li{margin:6px 0}.cta-card{display:grid;gap:12px;align-items:center;background:linear-gradient(135deg,#ffffff,#eaf5ff);border:1px solid rgba(70,139,223,.17);border-radius:24px;padding:18px;box-shadow:var(--shadow)}.site-footer{width:min(100%,760px);margin:0 auto;padding:0 16px 28px}.footer-card{border-radius:26px;background:rgba(255,255,255,.82);border:1px solid rgba(70,139,223,.14);padding:18px;box-shadow:var(--shadow)}.footer-brand{display:flex;gap:12px;align-items:center;margin-bottom:12px}.footer-brand img{width:40px;height:40px;border-radius:14px}.footer-brand p{margin:2px 0 0;font-size:13px}.footer-links{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}.footer-links a{font-size:13px;padding:7px 10px;border-radius:999px;background:rgba(70,139,223,.08);color:#2d5d92}.footer-note,.copyright{font-size:12px;color:#6b7d8f;margin:8px 0 0}.article-body p{margin-bottom:14px}.article-body .card{margin-top:14px}.two-col{display:grid;grid-template-columns:1fr;gap:12px}
@media (min-width: 761px){
    body{background:linear-gradient(180deg,#f6fbff,#ffffff)}
    .site-main,.site-footer,.header-inner,.desktop-access-note{max-width:760px}
    .hero{display:grid;grid-template-columns:1.02fr .98fr;align-items:center;padding:34px}.hero-visual{margin-top:0}.feature-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:repeat(2,1fr)}
}