*{box-sizing:border-box}
:root{--bg:#F5F8FC;--nav:#0A182A;--title:#102033;--blue:#3B82F6;--deep:#172B4D;--ice:#38BDF8;--cyan:#22D3C5;--indigo:#6366F1;--text:#263748;--muted:#657789;--soft:#EEF7FF;--mint:#E8FCFA;--line:rgba(59,130,246,.14);--shadow:0 20px 50px rgba(29,78,119,.10)}
html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.75;overflow-x:hidden}body.drawer-open{overflow:hidden}a{color:#2563EB;text-decoration:none}img{max-width:100%;height:auto;display:block}button,a{font:inherit}
.site-header{position:sticky;top:0;width:100%;z-index:9999;background:rgba(10,24,42,.94);backdrop-filter:blur(16px);box-shadow:0 8px 28px rgba(10,35,60,.12);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{max-width:1280px;margin:0 auto;min-height:72px;padding:0 24px;display:flex;align-items:center;gap:28px;justify-content:space-between}.site-logo{flex:0 0 auto}.site-logo img{max-height:44px;width:auto}
.nav-core{display:flex;align-items:center;gap:8px;margin-left:auto}.nav-core a{color:#DCEAF7;border-radius:999px;padding:8px 12px;white-space:nowrap}.nav-core a:hover,.nav-core a.active{color:#fff;background:rgba(56,189,248,.14)}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}.main-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:999px;background:linear-gradient(135deg,#2563EB 0%,#3B82F6 48%,#22D3C5 100%);color:#fff;font-weight:700;box-shadow:0 14px 32px rgba(37,99,235,.20);transition:.2s}.main-btn:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(37,99,235,.26)}
.secondary-btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border:1px solid rgba(37,99,235,.22);border-radius:999px;background:rgba(255,255,255,.75);color:#2563EB;font-weight:700}.menu-btn{width:42px;height:42px;border:1px solid rgba(255,255,255,.15);border-radius:14px;background:rgba(255,255,255,.06);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer}.menu-btn span{width:18px;height:2px;border-radius:99px;background:#EAF4FF}.mobile-menu-btn{display:none}
.drawer-overlay{position:fixed;inset:0;background:rgba(3,12,22,.48);z-index:10000;opacity:0;visibility:hidden;transition:.25s}.drawer-overlay.open{opacity:1;visibility:visible}.site-drawer{position:fixed;right:0;top:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:10001;transform:translateX(100%);transition:transform .28s ease;box-shadow:-30px 0 70px rgba(10,24,42,.2);padding:24px;overflow-y:auto}.site-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--line)}.drawer-logo img{max-height:44px}.drawer-close{border:0;background:#EEF7FF;color:#102033;width:42px;height:42px;border-radius:14px;font-size:28px;cursor:pointer}.drawer-nav{display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:20px 0}.drawer-nav a{padding:11px 12px;border-radius:12px;color:#263748;background:#F7FAFE}.drawer-nav a.active,.drawer-nav a:hover{background:#E9F5FF;color:#2563EB}.drawer-note{font-size:14px;color:#657789;background:#EEF7FF;padding:16px;border-radius:16px}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}.section{padding:88px 0}.section-tight{padding:56px 0}.section-soft{background:linear-gradient(180deg,#F7FBFF 0%,#EEF7FF 100%)}.section-mint{background:linear-gradient(180deg,#F7FFFE 0%,#E8FCFA 100%)}.section-deep{background:linear-gradient(135deg,#12253A,#172B4D);color:#DDEBFA}.section-kicker{display:inline-block;color:#0284C7;font-size:13px;font-weight:800;letter-spacing:.16em;margin-bottom:10px}.section-title{font-size:clamp(30px,4vw,48px);line-height:1.15;margin:0 0 18px;color:var(--title)}.section-lead{font-size:18px;color:#657789;max-width:820px;margin:0}
.hero{position:relative;overflow:hidden;padding:84px 0 70px;background:radial-gradient(circle at 10% 10%,rgba(56,189,248,.16),transparent 30%),radial-gradient(circle at 90% 25%,rgba(34,211,197,.14),transparent 28%),linear-gradient(135deg,#F9FCFF 0%,#EFF7FF 54%,#F1FFFC 100%)}.hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(59,130,246,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(59,130,246,.04) 1px,transparent 1px);background-size:34px 34px;pointer-events:none}.hero-grid{position:relative;display:grid;grid-template-columns:1.03fr .97fr;gap:64px;align-items:center}.hero h1{font-size:clamp(48px,7vw,82px);line-height:1.02;color:#102033;margin:10px 0 18px}.hero-subtitle{font-size:clamp(22px,3vw,34px);line-height:1.3;color:#172B4D;font-weight:750;margin:0 0 20px}.hero-copy{font-size:17px;color:#526A80;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.hero-points span{background:rgba(255,255,255,.75);border:1px solid var(--line);padding:8px 12px;border-radius:999px;color:#456077;font-size:14px}.hero-visual{position:relative;min-height:450px;display:flex;align-items:center;justify-content:center}.hero-visual .hero-img{width:100%;border-radius:30px;box-shadow:0 30px 70px rgba(28,83,127,.16);border:1px solid rgba(255,255,255,.8)}.floating-media{position:absolute;width:38%;right:-4%;bottom:-5%;padding:8px;background:rgba(255,255,255,.78);border:1px solid rgba(255,255,255,.9);backdrop-filter:blur(12px);border-radius:24px;box-shadow:var(--shadow)}.floating-media img{border-radius:18px}
.highlight-strip{margin-top:-26px;position:relative;z-index:2}.highlight-grid{display:grid;grid-template-columns:repeat(4,1fr);background:rgba(255,255,255,.88);backdrop-filter:blur(18px);border:1px solid rgba(59,130,246,.12);box-shadow:var(--shadow);border-radius:24px;overflow:hidden}.highlight-item{padding:24px 22px;position:relative}.highlight-item:not(:last-child):after{content:"";position:absolute;right:0;top:20%;height:60%;width:1px;background:var(--line)}.highlight-item strong{display:block;color:#102033;margin-bottom:6px}.highlight-item small{color:#0284C7;font-weight:800}.highlight-item p{font-size:14px;color:#657789;margin:7px 0 0}
.channel-wrap{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.channel-pill{flex:1 1 200px;padding:16px 18px;border-radius:20px;background:rgba(255,255,255,.75);border:1px solid var(--line)}.channel-pill:nth-child(3n+2){background:#E8FCFA}.channel-pill:nth-child(3n){background:#F0F4F8}.channel-pill strong{color:#172B4D}.channel-pill p{font-size:14px;color:#657789;margin:5px 0 4px}.channel-pill a{font-size:14px;font-weight:700}
.split{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:center}.split.reverse .media{order:2}.split.reverse .copy{order:1}.media-shell{position:relative;padding:18px;background:linear-gradient(135deg,#E9F5FF,#E8FCFA);border-radius:30px}.media-shell img,.content-img{border-radius:24px;box-shadow:0 18px 45px rgba(29,78,119,.12)}.copy h2{font-size:clamp(30px,4vw,46px);line-height:1.2;color:#102033;margin:10px 0 18px}.copy p{color:#5B7085}.number-tag{font-size:14px;font-weight:850;letter-spacing:.15em;color:#6366F1}.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:750;margin-top:8px}.link-arrow:after{content:"→"}
.duo-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px}.editorial-card,.info-card,.review-card,.security-card{border-radius:24px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}.editorial-card{padding:28px}.editorial-card.soft{background:#EEF7FF}.editorial-card.mint{background:#E8FCFA}.editorial-card.deep{background:#12253A;color:#DCEAF7}.editorial-card.deep h2,.editorial-card.deep h3{color:#fff}.editorial-card.deep p{color:#C6D7E6}.editorial-card img{border-radius:22px;margin-bottom:22px}.editorial-card h2{font-size:30px;margin:0 0 12px;color:#102033}.editorial-card p{color:#5F7285}.service-points{display:grid;gap:10px;margin:20px 0 0;padding:0;list-style:none}.service-points li{padding:12px 14px;background:rgba(255,255,255,.64);border:1px solid rgba(59,130,246,.10);border-radius:14px}
.trio-grid{display:grid;grid-template-columns:1fr 1fr 1.05fr;gap:22px;align-items:stretch}.topic-list,.timeline{display:grid;gap:12px}.topic-row{padding:14px 16px;border-radius:14px;background:#fff;border:1px solid var(--line);display:flex;justify-content:space-between;gap:14px}.timeline-item{padding:0 0 18px 20px;border-left:2px solid rgba(59,130,246,.22);position:relative}.timeline-item:before{content:"";position:absolute;left:-6px;top:5px;width:10px;height:10px;background:#38BDF8;border-radius:50%}
.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.security-card{padding:26px}.security-card img{border-radius:20px;margin-bottom:20px}.security-card h3{font-size:26px;color:#102033;margin:0 0 10px}.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.review-card{padding:22px}.review-card:nth-child(2n){transform:translateY(14px)}.review-card p{margin:0;color:#50667A}.review-card strong{display:block;margin-top:16px;color:#102033}
.faq-list{display:grid;gap:14px;margin-top:30px}.faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;padding:0 20px;box-shadow:0 12px 30px rgba(29,78,119,.06)}.faq-item summary{cursor:pointer;font-weight:800;color:#172B4D;padding:18px 0}.faq-item p{padding:0 0 20px;margin:0;color:#5C7084}.notice-band{padding:26px;border-radius:26px;background:linear-gradient(135deg,#172B4D,#1E3A5F);color:#EAF4FF}.notice-band h2{color:#fff;margin-top:0}.notice-band p{color:#D5E4F2}
.page-hero{position:relative;padding:78px 0 58px;background:radial-gradient(circle at 80% 15%,rgba(56,189,248,.16),transparent 30%),linear-gradient(135deg,#F7FBFF,#EEF7FF)}.page-hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}.page-hero h1{font-size:clamp(42px,6vw,68px);line-height:1.08;color:#102033;margin:10px 0 18px}.page-hero p{font-size:18px;color:#60758A;margin:0 0 24px}.page-hero img{border-radius:28px;box-shadow:0 28px 65px rgba(29,78,119,.14)}
.page-feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.info-card{padding:24px}.info-card h3{color:#102033;margin:0 0 8px}.info-card p{color:#64788B;margin:0}.steps{counter-reset:step;display:grid;gap:16px;margin-top:24px}.step{position:relative;padding:20px 22px 20px 72px;background:#fff;border:1px solid var(--line);border-radius:20px}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:20px;top:20px;font-weight:900;color:#6366F1}.quote{padding:26px;border-left:4px solid #38BDF8;background:#F0F8FF;border-radius:0 18px 18px 0;color:#4F667B}
.site-footer{background:#0C1B2A;color:#EAF4FF;padding:60px 0 100px}.footer-inner{width:min(1180px,calc(100% - 40px));margin:0 auto;display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:38px}.footer-logo img{max-height:48px;width:auto}.footer-brand p{color:#BFD0E0;max-width:420px}.site-footer h2{font-size:16px;color:#fff;margin:0 0 14px}.site-footer a{display:block;color:#CFE0EF;padding:5px 0}.footer-bottom{width:min(1180px,calc(100% - 40px));margin:34px auto 0;padding-top:24px;border-top:1px solid rgba(255,255,255,.09);color:#AFC3D5;font-size:13px}.mobile-bottom-nav{display:none}
@media(max-width:1020px){.nav-core{display:none}.mobile-menu-btn{display:flex}.desktop-menu-btn{display:none}.header-inner{gap:16px}.site-logo{position:absolute;left:50%;transform:translateX(-50%)}.hero-grid,.page-hero-grid,.split,.duo-grid,.security-grid{grid-template-columns:1fr}.hero-visual{min-height:auto}.trio-grid{grid-template-columns:1fr 1fr}.trio-grid>:last-child{grid-column:1/-1}.review-grid,.page-feature-grid{grid-template-columns:1fr 1fr}.footer-inner{grid-template-columns:1.3fr 1fr 1fr}.footer-inner>div:last-child{grid-column:2/4}.split.reverse .media,.split.reverse .copy{order:initial}}
@media(max-width:720px){.header-inner{min-height:64px;padding:0 14px}.site-logo img{max-height:38px}.header-cta{min-height:40px;padding:0 14px;font-size:14px}.menu-btn{width:40px;height:40px}.container{width:min(100% - 28px,1180px)}.section{padding:64px 0}.section-tight{padding:44px 0}.hero{padding:58px 0 54px}.hero-grid{gap:34px}.hero h1{font-size:50px}.hero-subtitle{font-size:25px}.hero-copy{font-size:16px}.hero-actions .main-btn,.hero-actions .secondary-btn{width:100%}.hero-visual .hero-img{border-radius:22px}.floating-media{width:42%;right:2%;bottom:-2%}.highlight-strip{margin-top:-16px}.highlight-grid{grid-template-columns:1fr 1fr}.highlight-item{padding:18px 16px}.channel-pill{flex-basis:100%}.duo-grid,.trio-grid,.security-grid,.review-grid,.page-feature-grid{grid-template-columns:1fr}.trio-grid>:last-child{grid-column:auto}.review-card:nth-child(2n){transform:none}.page-hero{padding:54px 0 42px}.page-hero-grid{gap:30px}.page-hero h1{font-size:42px}.footer-inner{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}.footer-inner>div:last-child{grid-column:auto}.site-footer{padding-bottom:120px}.mobile-bottom-nav{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;left:10px;right:10px;bottom:10px;z-index:9000;background:rgba(10,24,42,.94);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.12);border-radius:18px;box-shadow:0 15px 40px rgba(10,24,42,.22);overflow:hidden}.mobile-bottom-nav a{color:#DCEAF7;text-align:center;padding:11px 4px;font-size:13px}.drawer-nav{grid-template-columns:1fr 1fr}}
@media(max-width:430px){.site-logo img{max-width:118px}.header-cta{padding:0 11px}.drawer-nav{grid-template-columns:1fr}.highlight-grid{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.footer-inner>div:last-child{grid-column:auto}}

/* Page-specific editorial variation */
.page-brand .page-hero-grid,.page-about .page-hero-grid{grid-template-columns:.9fr 1.1fr}
.page-vlog .page-hero,.page-discover .page-hero{background:radial-gradient(circle at 15% 20%,rgba(34,211,197,.16),transparent 28%),linear-gradient(135deg,#F8FFFE,#EEF7FF)}
.page-social .page-feature-grid,.page-chat .page-feature-grid{grid-template-columns:1.2fr .8fr 1fr}
.page-match .page-hero-grid,.page-account-guide .page-hero-grid{grid-template-columns:1fr 1fr}
.page-community .section-soft,.page-help .section-soft{background:linear-gradient(135deg,#F0F4F8,#EEF7FF)}
.page-activity .page-hero,.page-service-center .page-hero{background:linear-gradient(135deg,#F9FCFF,#E8FCFA)}
.page-app .page-hero-grid,.page-download .page-hero-grid{grid-template-columns:1.2fr .8fr}
.page-safety .page-hero,.page-privacy .page-hero{background:linear-gradient(135deg,#F7FBFF,#E9F5FF,#F7FFFE)}
.page-responsible-social .page-feature-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.page-contact .page-hero-grid{grid-template-columns:.95fr 1.05fr}
@media(max-width:1020px){
  .page-brand .page-hero-grid,.page-about .page-hero-grid,.page-social .page-feature-grid,.page-chat .page-feature-grid,
  .page-match .page-hero-grid,.page-account-guide .page-hero-grid,.page-app .page-hero-grid,.page-download .page-hero-grid,
  .page-contact .page-hero-grid{grid-template-columns:1fr}
}