:root{--blue:#4D8FF7;--deep:#253B73;--cyan:#54D2F3;--text:#222;--muted:#5B6A82;--soft:#8795AA;--line:rgba(77,143,247,.12);--shadow:0 16px 40px rgba(37,59,115,.10);--footer:#1B2F5B}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--text);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}img{display:block;max-width:100%;height:auto;object-fit:contain}.container{width:min(1180px,calc(100% - 40px));margin:auto}.site-header{position:sticky;top:0;z-index:9999;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);box-shadow:0 8px 24px rgba(37,59,115,.08)}.header-inner{width:min(1240px,calc(100% - 36px));height:76px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand img{width:156px;max-height:48px}.main-nav{display:flex;align-items:center;gap:6px;white-space:nowrap}.main-nav a{padding:10px 12px;border-radius:999px;color:var(--deep);font-size:14px}.main-nav a:hover,.main-nav a.active{background:linear-gradient(135deg,rgba(77,143,247,.10),rgba(84,210,243,.12));color:var(--blue);box-shadow:inset 0 -2px 0 var(--cyan)}.main-btn{position:relative;overflow:hidden;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;padding:11px 24px;background:linear-gradient(135deg,#4D8FF7 0%,#5EAEF5 48%,#54D2F3 100%);color:#fff;border-radius:999px;box-shadow:0 12px 26px rgba(77,143,247,.22);font-weight:700;white-space:nowrap;transition:.25s}.main-btn:after{content:"";position:absolute;inset:0;border-radius:inherit;border:1px solid rgba(255,255,255,.56);box-shadow:0 0 12px rgba(77,143,247,.20),0 0 18px rgba(84,210,243,.24);pointer-events:none}.main-btn:hover{transform:translateY(-1px);box-shadow:0 16px 36px rgba(77,143,247,.28)}.mobile-header{display:none}.hero-section{padding:72px 0 34px;background:radial-gradient(circle at 15% 20%,rgba(77,143,247,.12) 0%,rgba(77,143,247,0) 30%),radial-gradient(circle at 88% 18%,rgba(84,210,243,.16) 0%,rgba(84,210,243,0) 28%),linear-gradient(135deg,#fff 0%,#F7FAFF 52%,#EEF4FF 100%)}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}.section-kicker,.tag,.label,.num,.badge{color:var(--blue);font-weight:700;letter-spacing:.04em}.hero-copy h1,.page-hero h1{margin:10px 0 20px;color:var(--deep);font-size:clamp(34px,5vw,58px);line-height:1.18}.hero-copy p{color:var(--muted);font-size:17px}.hero-actions{display:flex;align-items:center;gap:20px;margin-top:28px}.text-link{color:var(--blue);font-weight:700}.text-link:hover{color:#315FA8}.hero-visual{padding:24px;background:#fff;border:1px solid rgba(77,143,247,.16);border-radius:30px;box-shadow:var(--shadow);position:relative}.hero-visual:before{content:"";position:absolute;width:110px;height:110px;border-radius:50%;right:-22px;top:-22px;background:linear-gradient(135deg,rgba(77,143,247,.24),rgba(84,210,243,.16));filter:blur(2px);z-index:-1}.hero-services{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:12px}.service-mini,.card,.zone-card,.info-card{background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:22px}.service-mini{padding:22px}.service-mini h3{margin:4px 0;color:var(--deep)}.service-mini p{margin:0;color:var(--muted)}.section{padding:76px 0}.section.alt{background:#F7FAFF}.section-head{max-width:760px;margin-bottom:32px}.section-title,h1,h2,h3{color:var(--deep)}.section-title{font-size:clamp(28px,4vw,42px);line-height:1.25;margin:8px 0 12px}.section-desc{color:var(--muted)}.pill-nav{display:flex;gap:14px;overflow-x:auto;padding:6px 2px 18px;scrollbar-width:thin}.pill-item{min-width:190px;padding:18px;border-radius:999px;background:rgba(255,255,255,.88);border:1px solid rgba(77,143,247,.14)}.pill-item strong{display:block;color:var(--deep)}.pill-item span{font-size:13px;color:var(--muted)}.intro-strip{padding:26px 30px;border-radius:24px;background:linear-gradient(135deg,#fff,#EEF9FF);border:1px solid var(--line);color:var(--muted)}.board-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.info-card{padding:26px}.info-card h3{margin:8px 0}.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;margin:0 0 54px}.feature-row.reverse .feature-media{order:2}.feature-media{padding:18px;border-radius:26px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.feature-content ul{padding-left:20px;color:var(--muted)}.zone-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.zone-card{overflow:hidden}.zone-card img{width:100%;max-height:190px;padding:16px}.zone-card .content{padding:0 22px 24px}.zone-card p{color:var(--muted)}.app-banner{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:center;padding:34px;border-radius:30px;background:linear-gradient(135deg,#fff,#EEF4FF,#EEF9FF);border:1px solid var(--line)}.app-banner img{max-height:300px;margin:auto}.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:22px 0}.check-item{padding:14px 16px;border-radius:14px;background:#fff;border:1px solid var(--line);color:var(--muted)}.security-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:34px;align-items:start}.security-cards{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.faq-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.faq-item{padding:24px;border-radius:20px;background:#fff;border:1px solid var(--line)}.faq-item h3{margin-top:0}.faq-item p{color:var(--muted)}.page-hero{padding:62px 0;background:linear-gradient(135deg,#fff,#F7FAFF,#EEF4FF)}.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}.page-hero p{color:var(--muted);font-size:17px}.page-hero img{max-height:340px;margin:auto;padding:20px;background:#fff;border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.content-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:30px}.prose{font-size:16px}.prose h2{margin-top:34px}.prose p,.prose li{color:#3d4858}.side-panel{padding:25px;border-radius:22px;background:#F7FAFF;border:1px solid var(--line);align-self:start}.side-panel a{display:block;padding:10px 0;color:var(--blue);border-bottom:1px solid var(--line)}.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.review-card{padding:22px;border-radius:20px;background:#fff;border:1px solid var(--line)}.review-card p{color:var(--muted)}.site-footer{background:var(--footer);color:#EEF6FF;padding:58px 0 20px}.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:36px}.footer-brand img{width:160px;filter:brightness(0) invert(1)}.site-footer h3{color:#fff}.site-footer a{display:block;color:#d6e6ff;padding:5px 0}.site-footer p{color:#c8d7ef}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;color:#c8d7ef;font-size:14px}.mobile-drawer,.drawer-mask{display:none}
@media(max-width:1000px){.desktop-header{display:none}.mobile-header{display:flex;height:68px}.mobile-brand{position:absolute;left:50%;transform:translateX(-50%)}.mobile-brand img{width:132px}.menu-toggle{width:42px;height:42px;border:0;background:#F7FAFF;border-radius:12px;display:flex;flex-direction:column;justify-content:center;gap:5px;padding:10px}.menu-toggle span{height:2px;background:var(--deep);width:100%}.mobile-main-btn{padding:9px 15px;font-size:13px}.drawer-mask{display:block;position:fixed;inset:0;background:rgba(0,0,0,.38);z-index:10000;opacity:0;visibility:hidden;transition:.25s}.drawer-mask.show{opacity:1;visibility:visible}.mobile-drawer{display:block;position:fixed;left:0;top:0;width:84%;max-width:320px;height:100vh;z-index:10001;background:#fff;transform:translateX(-105%);transition:.3s;box-shadow:20px 0 50px rgba(0,0,0,.18);overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{display:flex;justify-content:space-between;align-items:center;padding:18px;border-bottom:1px solid var(--line)}.drawer-head img{width:142px}.drawer-head button{border:0;background:#EEF4FF;color:var(--deep);font-size:28px;width:38px;height:38px;border-radius:12px}.mobile-drawer nav{padding:14px}.mobile-drawer nav a{display:block;padding:13px 14px;color:var(--deep);border-radius:12px}.mobile-drawer nav a.active,.mobile-drawer nav a:hover{background:#EEF4FF;color:var(--blue)}.drawer-note{margin:14px;padding:16px;border-radius:14px;background:#F7FAFF;color:var(--muted);font-size:13px}.drawer-open{overflow:hidden}.hero-grid,.page-hero-grid{grid-template-columns:1fr}.hero-services{grid-template-columns:repeat(3,1fr)}.board-grid,.zone-grid{grid-template-columns:repeat(2,1fr)}.feature-row,.app-banner,.security-layout,.content-grid{grid-template-columns:1fr}.feature-row.reverse .feature-media{order:0}.review-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.container{width:min(100% - 28px,1180px)}.hero-section{padding-top:44px}.hero-copy h1,.page-hero h1{font-size:36px}.hero-services,.board-grid,.zone-grid,.security-cards,.faq-list,.check-grid{grid-template-columns:1fr}.feature-row{gap:22px}.section{padding:56px 0}.app-banner{padding:22px}.footer-grid{grid-template-columns:1fr}.pill-item{min-width:176px}.hero-actions{align-items:flex-start;flex-direction:column}.mobile-main-btn{padding:8px 12px}.mobile-brand img{width:118px}}