:root{
  --primary: rgb(70,139,223);
  --primary-dark:#1f5fae;
  --ink:#16243a;
  --muted:#60728b;
  --line:#d9e8fb;
  --soft:#f4f9ff;
  --soft-blue:#eaf4ff;
  --white:#fff;
  --shadow:0 18px 55px rgba(31,95,174,.12);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:linear-gradient(180deg,#f8fbff 0%,#fff 28%,#f7fbff 100%);line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1120px,calc(100% - 32px));margin:0 auto}.narrow{width:min(860px,calc(100% - 32px));margin:0 auto}.section{padding:58px 0}.section-title{font-size:clamp(28px,5vw,46px);line-height:1.18;margin:0 0 18px;letter-spacing:-.04em}.section-lead{color:var(--muted);font-size:17px;max-width:760px;margin:0 0 30px}.eyebrow,.badge{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);background:rgba(255,255,255,.78);color:var(--primary-dark);font-weight:700;border-radius:999px;padding:7px 13px;font-size:13px;margin-bottom:16px}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.88);backdrop-filter:blur(14px);border-bottom:1px solid rgba(217,232,251,.8)}.nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{display:flex;align-items:center;gap:10px;font-weight:900;letter-spacing:-.02em}.logo{width:38px;height:38px;border-radius:12px}.site-nav{display:none;position:absolute;left:16px;right:16px;top:72px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:12px;box-shadow:var(--shadow)}.site-nav.is-open{display:grid}.site-nav a{padding:12px 14px;border-radius:12px;color:#41536b;font-weight:700}.site-nav a:hover{background:var(--soft-blue);color:var(--primary-dark)}.nav-toggle{border:1px solid var(--line);background:#fff;border-radius:12px;padding:8px 11px;font-size:22px;color:var(--ink)}.hero-layout{padding:54px 0 42px}.hero-panel{display:grid;gap:30px;align-items:center}.hero-copy h1{font-size:clamp(38px,10vw,76px);line-height:1.02;margin:0 0 22px;letter-spacing:-.07em}.hero-copy p{font-size:18px;color:var(--muted);margin:0 0 24px;max-width:650px}.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}.tag{display:inline-flex;align-items:center;gap:6px;padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#35506e;font-size:13px;font-weight:700}.download-btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:13px 24px;border-radius:999px;background:var(--primary);color:#fff!important;font-weight:900;box-shadow:0 14px 30px rgba(70,139,223,.26);transition:.2s ease;border:0;cursor:pointer}.download-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(70,139,223,.32)}.visual-card{position:relative;border-radius:30px;background:linear-gradient(150deg,#fff 0%,#edf6ff 100%);padding:24px;border:1px solid #dceeff;box-shadow:var(--shadow);overflow:hidden}.visual-card:before{content:"";position:absolute;inset:auto -20% -35% 20%;height:220px;background:radial-gradient(circle,rgba(70,139,223,.20),transparent 65%)}.phone-frame{position:relative;z-index:2;margin:0 auto;max-width:250px;border-radius:34px;background:#fefefe;border:10px solid #16243a;box-shadow:0 28px 70px rgba(22,36,58,.18);overflow:hidden}.product-badge{position:relative;z-index:3;margin-top:-18px;background:rgba(255,255,255,.88);border:1px solid var(--line);border-radius:18px;padding:14px;box-shadow:0 12px 32px rgba(31,95,174,.12)}.status-grid{display:grid;gap:10px;margin-top:14px}.status-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:15px}.status-card strong{display:block;color:var(--ink);font-size:15px}.status-card span{display:block;color:var(--muted);font-size:13px}.metric-strip{display:grid;gap:14px}.metric{background:rgba(255,255,255,.86);border:1px solid var(--line);border-radius:20px;padding:20px}.metric b{display:block;font-size:28px;color:var(--primary-dark);line-height:1}.metric span{display:block;color:var(--muted);font-size:14px;margin-top:8px}.category-grid,.feature-grid,.scenario-grid,.faq-grid{display:grid;gap:16px}.category-card,.feature-card,.scenario-card,.faq-item,.content-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 12px 35px rgba(31,95,174,.07)}.category-card:hover,.scenario-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.category-card,.scenario-card{transition:.2s ease}.number{font-size:13px;font-weight:900;color:var(--primary);letter-spacing:.12em;text-transform:uppercase}.category-card h3,.feature-card h3,.scenario-card h3,.faq-item h3{margin:8px 0 8px;font-size:21px;line-height:1.25}.category-card p,.feature-card p,.scenario-card p,.faq-item p,.content-card p{margin:0;color:var(--muted)}.more-link{display:inline-flex;margin-top:14px;font-weight:900;color:var(--primary-dark)}.steps{display:grid;gap:14px;counter-reset:step}.step{position:relative;background:linear-gradient(180deg,#fff,#f7fbff);border:1px solid var(--line);border-radius:20px;padding:22px}.step:before{counter-increment:step;content:"0" counter(step);display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;border-radius:12px;background:var(--primary);color:#fff;font-weight:900;margin-bottom:12px}.step h3{margin:0 0 8px;font-size:20px}.step p{margin:0;color:var(--muted)}.security-layout,.split-layout,.page-layout{display:grid;gap:22px;align-items:start}.security-panel{background:linear-gradient(135deg,#eaf4ff 0%,#fff 100%);border:1px solid #d5eaff;border-radius:30px;padding:28px;box-shadow:var(--shadow)}.security-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}.security-list li{background:rgba(255,255,255,.78);border:1px solid rgba(217,232,251,.9);border-radius:16px;padding:14px;color:#36516f}.process-panel{background:linear-gradient(135deg,#f3f9ff,#fff);border:1px solid var(--line);border-radius:30px;padding:28px}.process-line{display:grid;gap:12px}.process-line div{padding:15px;border-left:3px solid var(--primary);background:#fff;border-radius:0 14px 14px 0;color:#41536b}.cta-section{padding:70px 0}.cta-box{text-align:center;border-radius:34px;padding:44px 22px;background:linear-gradient(135deg,#e9f4ff 0%,#fff 55%,#f6fbff 100%);border:1px solid #d9ebff;box-shadow:var(--shadow)}.cta-box h2{font-size:clamp(30px,6vw,52px);line-height:1.12;margin:0 0 14px;letter-spacing:-.05em}.cta-box p{color:var(--muted);margin:0 auto 24px;max-width:680px}.page-hero{padding:56px 0 30px}.page-hero h1{font-size:clamp(34px,7vw,58px);line-height:1.08;margin:0 0 18px;letter-spacing:-.05em}.page-hero p{font-size:18px;color:var(--muted);max-width:780px;margin:0}.article-body{background:#fff;border:1px solid var(--line);border-radius:28px;padding:24px;box-shadow:0 12px 35px rgba(31,95,174,.07)}.article-body h2{font-size:26px;line-height:1.25;margin:30px 0 12px}.article-body h2:first-child{margin-top:0}.article-body p{color:#40536d;margin:0 0 16px}.check-list{display:grid;gap:10px;padding:0;margin:18px 0;list-style:none}.check-list li{padding:13px 14px;border-radius:14px;background:var(--soft);border:1px solid var(--line);color:#40536d}.side-note{background:linear-gradient(180deg,#eef7ff,#fff);border:1px solid var(--line);border-radius:24px;padding:22px;position:sticky;top:96px}.side-note h3{margin:0 0 12px}.side-note p{color:var(--muted);margin:0 0 14px}.download-row{margin-top:24px}.download-page-panel{display:grid;gap:18px}.download-single{text-align:center;padding:28px;background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}.site-footer{padding:46px 0 24px;background:#10243d;color:#d8e7fb;margin-top:40px}.footer-layout{display:grid;gap:24px}.footer-brand{display:flex;gap:10px;align-items:center;margin-bottom:12px}.footer-brand img{width:34px;height:34px;border-radius:10px}.site-footer p{color:#a9bdd5;margin:0;max-width:640px}.footer-links{display:grid;gap:10px}.footer-links a{color:#d8e7fb}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:28px;padding-top:18px;color:#91a7c0;font-size:14px}.quote-block{font-size:clamp(25px,5vw,44px);line-height:1.22;letter-spacing:-.05em;margin:0 0 18px;color:#14233a}.mini-labels{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.mini-labels span{background:#eef7ff;border:1px solid #d9ebff;color:#2a5f9f;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:800}.topline{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:22px 0}.two-col{display:grid;gap:16px}.notice{border-left:4px solid var(--primary);background:#f2f8ff;border-radius:14px;padding:14px 16px;color:#40536d}
@media (min-width:700px){.metric-strip{grid-template-columns:repeat(4,1fr)}.category-grid{grid-template-columns:repeat(2,1fr)}.feature-grid,.scenario-grid,.faq-grid{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(3,1fr)}.status-grid{grid-template-columns:repeat(2,1fr)}.two-col{grid-template-columns:repeat(2,1fr)}}
@media (min-width:980px){.nav-toggle{display:none}.site-nav{display:flex;position:static;box-shadow:none;border:0;background:transparent;padding:0;align-items:center;gap:2px}.hero-panel{grid-template-columns:1.08fr .92fr}.hero-layout{padding:88px 0 68px}.visual-card{padding:34px}.status-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:repeat(3,1fr)}.feature-grid{grid-template-columns:repeat(3,1fr)}.scenario-grid{grid-template-columns:repeat(3,1fr)}.security-layout,.split-layout{grid-template-columns:1fr 1fr}.page-layout{grid-template-columns:minmax(0,1fr) 310px}.article-body{padding:34px}.footer-layout{grid-template-columns:1fr 260px}.download-page-panel{grid-template-columns:1fr 1fr}.process-line{grid-template-columns:repeat(4,1fr)}.process-line div{border-left:0;border-top:3px solid var(--primary);border-radius:0 0 14px 14px}}