:root{--blue:#0868f7;--blue2:#08a5ff;--indigo:#3632d8;--ink:#0b1633;--muted:#64718b;--line:#e7ecf5;--soft:#f5f8ff;--max:1160px;--shadow:0 22px 60px rgba(22,71,160,.14)}
*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);line-height:1.65;background:#fff;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;height:72px;background:rgba(255,255,255,.82);backdrop-filter:blur(18px);border-bottom:1px solid transparent;transition:.25s}.site-header.scrolled{border-color:var(--line);box-shadow:0 5px 20px rgba(9,29,72,.05)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:.02em}.brand img{width:38px;height:38px;border-radius:11px}.nav{display:flex;gap:30px}.nav a{color:#39455f;font-size:14px;font-weight:600;transition:.2s}.nav a:hover{color:var(--blue)}.nav-toggle{display:none;border:0;background:none;padding:8px}.nav-toggle span{display:block;width:23px;height:2px;background:var(--ink);margin:5px}
.hero{position:relative;overflow:hidden;background:linear-gradient(145deg,#f5f9ff 0%,#eef7ff 52%,#fff 100%);padding:98px 0 112px}.hero:after{content:"";position:absolute;inset:0;background-image:radial-gradient(#92b6ee 1px,transparent 1px);background-size:28px 28px;opacity:.16;mask-image:linear-gradient(90deg,#000,transparent 50%)}.hero-orb{position:absolute;border-radius:50%;filter:blur(1px)}.orb-one{width:420px;height:420px;right:-140px;top:-170px;background:rgba(14,142,255,.12)}.orb-two{width:280px;height:280px;left:-150px;bottom:-100px;background:rgba(78,61,228,.08)}.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:80px}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--blue);background:#e9f2ff;border:1px solid #d9e9ff;border-radius:999px;padding:6px 13px;font-size:12px;font-weight:700;letter-spacing:.09em;margin-bottom:19px}.eyebrow i{width:6px;height:6px;background:var(--blue);border-radius:50%;box-shadow:0 0 0 4px rgba(8,104,247,.12)}.hero h1{font-size:60px;line-height:1.12;letter-spacing:-.045em;margin-bottom:24px}.hero h1 span{background:linear-gradient(90deg,var(--blue),#563de2);color:transparent;background-clip:text}.hero-copy>p{font-size:18px;color:var(--muted);max-width:570px;margin-bottom:32px}.hero-actions{display:flex;gap:13px;margin-bottom:31px}.btn{display:inline-flex;align-items:center;gap:26px;padding:13px 23px;border-radius:12px;font-size:14px;font-weight:700;transition:.2s}.primary{color:#fff;background:linear-gradient(135deg,var(--blue),#3158dd);box-shadow:0 13px 30px rgba(8,104,247,.24)}.primary:hover{transform:translateY(-2px)}.secondary{background:#fff;border:1px solid #dfe6f1}.trust-row{display:flex;gap:24px;color:#536078;font-size:13px}.check{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:6px;background:#e3f7ee;color:#0fa66d;border-radius:50%;font-style:normal;font-size:11px}
.hero-visual{position:relative;height:500px;display:grid;place-items:center}.glow{position:absolute;width:430px;height:430px;border-radius:50%;background:radial-gradient(circle,rgba(4,138,255,.25),transparent 67%)}.phone{position:relative;width:290px;background:#fff;border:7px solid #121c37;border-radius:36px;box-shadow:0 38px 80px rgba(23,71,158,.25);overflow:hidden;transform:rotate(2deg);z-index:2}.phone:before{content:"";display:block;width:90px;height:19px;background:#121c37;position:absolute;top:-2px;left:50%;transform:translateX(-50%);border-radius:0 0 13px 13px}.phone-head{padding:36px 16px 13px;display:flex;align-items:center;border-bottom:1px solid var(--line)}.phone-head img{width:34px;height:34px;border-radius:10px;margin-right:10px}.phone-head div{display:flex;flex-direction:column;line-height:1.25}.phone-head strong{font-size:14px}.phone-head small{font-size:9px;color:#2aa67b}.phone-head small i{display:inline-block;width:5px;height:5px;background:#25c584;border-radius:50%;margin-right:3px}.more{margin-left:auto;color:#8090a8}.messages{padding:15px 12px;background:#f7f9fd;min-height:280px}.day{text-align:center;font-size:9px;color:#9ba5b5;margin-bottom:11px}.bubble{font-size:11px;padding:9px 11px;border-radius:11px;margin:8px 0;width:max-content;max-width:83%}.incoming{background:#fff}.outgoing{background:linear-gradient(135deg,var(--blue),#1a88f3);color:#fff;margin-left:auto}.call-card{display:flex;align-items:center;gap:8px;background:#fff;padding:10px;border-radius:12px;margin:10px 0;box-shadow:0 5px 16px rgba(20,51,100,.07)}.call-card>span{display:grid;place-items:center;width:29px;height:29px;background:#e8f2ff;color:var(--blue);border-radius:9px}.call-card div{display:flex;flex-direction:column;line-height:1.35}.call-card strong{font-size:10px}.call-card small{font-size:8px;color:#8590a4}.call-card b{margin-left:auto}.composer{display:flex;align-items:center;gap:9px;padding:11px 12px;font-size:10px;color:#a1aabc}.composer span{padding:8px;background:#f4f6fa;border-radius:9px;flex:1}.composer b{font-size:17px}.composer i{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--blue);color:#fff;font-style:normal}.float-card{position:absolute;z-index:3;display:flex;align-items:center;gap:10px;padding:12px 15px;background:rgba(255,255,255,.94);border:1px solid #e4ecf8;border-radius:14px;box-shadow:var(--shadow)}.float-card>span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;color:#fff;background:linear-gradient(135deg,var(--blue),var(--blue2))}.float-card div{display:flex;flex-direction:column}.float-card b{font-size:11px}.float-card small{font-size:8px;color:#8590a4}.privacy{left:6px;top:90px}.devices{right:-12px;bottom:85px}
.section{padding:100px 0}.section-head{text-align:center;max-width:660px;margin:0 auto 52px}.section-head h2{font-size:39px;letter-spacing:-.025em;margin-bottom:12px}.section-head p{color:var(--muted);font-size:16px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.card{position:relative;min-height:250px;padding:29px;border:1px solid var(--line);border-radius:20px;background:#fff;overflow:hidden;transition:.25s}.card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#caddff}.card.featured{grid-row:span 2;min-height:520px;background:linear-gradient(155deg,#f5f9ff,#eaf4ff)}.icon{display:grid;place-items:center;width:47px;height:47px;border-radius:13px;background:#eaf3ff;color:var(--blue);font-size:23px;margin-bottom:25px}.card h3{font-size:20px;margin-bottom:9px}.card p{color:var(--muted);font-size:14px}.tag{display:inline-block;color:var(--blue);font-size:11px;font-weight:700;margin-bottom:12px}.mini-chat{position:absolute;left:29px;right:29px;bottom:32px;height:205px;padding:20px;background:#fff;border-radius:18px;box-shadow:0 15px 35px rgba(8,74,160,.1)}.mini-chat i{display:block;height:27px;border-radius:8px;background:#e9eef7;margin-bottom:14px;width:70%}.mini-chat i:nth-child(even){margin-left:auto;background:#2586f5;width:58%}.mini-chat i:nth-child(3){width:50%}
.security-section{color:#fff;background:linear-gradient(130deg,#071f52,#072f7d 55%,#0648a2);overflow:hidden}.security-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:80px}.eyebrow.light{color:#8dc2ff;background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.12)}.security-copy>h2{font-size:43px;line-height:1.25;letter-spacing:-.03em;margin-bottom:18px}.security-copy>p{color:#b8cae7;max-width:550px;margin-bottom:39px}.security-list>div{display:flex;gap:18px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12)}.security-list>div>span{font-size:12px;color:#61b2ff;padding-top:4px}.security-list h3{font-size:16px}.security-list p{font-size:13px;color:#a9bedf}.shield-wrap{position:relative;height:440px;display:grid;place-items:center}.rings{position:absolute;width:390px;height:390px;border:1px solid rgba(102,181,255,.16);border-radius:50%;box-shadow:0 0 0 55px rgba(38,121,229,.07),0 0 0 110px rgba(38,121,229,.04)}.shield{position:relative;display:grid;place-items:center;width:150px;height:170px;background:linear-gradient(155deg,#2da9ff,#1761ed);font-size:58px;font-weight:300;clip-path:polygon(50% 0,95% 18%,88% 72%,50% 100%,12% 72%,5% 18%);filter:drop-shadow(0 25px 28px rgba(0,0,0,.25))}.secure-pill{position:absolute;bottom:58px;padding:10px 18px;background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.2);border-radius:999px;font-size:12px;backdrop-filter:blur(10px)}
.moments{background:#f7f9fd}.moments-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:120px;align-items:center}.feed{width:380px;margin:auto;background:#fff;border:1px solid var(--line);border-radius:24px;padding:22px;box-shadow:var(--shadow);transform:rotate(-2deg)}.feed-head{display:flex;justify-content:space-between;padding-bottom:17px;border-bottom:1px solid var(--line)}.feed-head span{color:var(--blue)}.post{padding-top:17px}.avatar{float:left;display:grid;place-items:center;width:38px;height:38px;background:linear-gradient(135deg,#2ba9ff,#2956de);color:#fff;border-radius:50%;margin-right:9px}.post>div:nth-child(2){display:flex;flex-direction:column;font-size:12px}.post small{color:#98a3b6}.post p{clear:both;padding:15px 0 11px;font-size:13px}.sunset{height:180px;border-radius:14px;background:linear-gradient(#6489ce 0%,#ffc89b 52%,#384968 53%);position:relative;overflow:hidden}.sunset i{position:absolute;width:58px;height:58px;background:#fff2ce;border-radius:50%;top:47px;left:50%;box-shadow:0 0 35px #ffd08c}.post-meta{display:flex;justify-content:space-between;padding-top:12px;color:#7c879b;font-size:11px}.moments-copy h2{font-size:42px;letter-spacing:-.03em;margin-bottom:18px}.moments-copy>p{color:var(--muted);margin-bottom:30px}.moments-copy ul{list-style:none}.moments-copy li{display:flex;gap:13px;margin:19px 0}.moments-copy li>i{display:grid;place-items:center;width:25px;height:25px;background:#e3f1ff;color:var(--blue);border-radius:50%;font-style:normal;font-size:12px}.moments-copy li span{display:flex;flex-direction:column}.moments-copy li b{font-size:15px}.moments-copy li small{color:var(--muted)}
.platforms{background:#fff}.platform-box{display:flex;align-items:center;justify-content:space-between;padding:56px 64px;border-radius:28px;color:#fff;background:linear-gradient(125deg,#096bf5,#174bd2 60%,#4433ce);box-shadow:0 30px 70px rgba(21,78,201,.22)}.platform-box>div:first-child{max-width:480px}.platform-box h2{font-size:37px;margin-bottom:10px}.platform-box p{color:#d7e5ff}.device-list{display:flex;gap:12px}.device-list span{display:flex;flex-direction:column;width:130px;padding:20px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:17px}.device-list i{font-size:25px;font-style:normal;margin-bottom:16px}.device-list b{font-size:13px}.device-list small{font-size:10px;color:#c9dcff}.contact{background:#f7f9fd}.contact-grid{display:grid;grid-template-columns:1.05fr 1fr 1fr;gap:18px}.contact-grid>div,.contact-grid>a{display:flex;align-items:center;padding:24px;background:#fff;border:1px solid var(--line);border-radius:17px}.contact-grid i{display:grid;place-items:center;width:43px;height:43px;background:#eaf3ff;color:var(--blue);border-radius:12px;font-style:normal;margin-right:13px}.contact-grid span{display:flex;flex-direction:column}.contact-grid small{color:var(--muted)}.contact-grid b{font-size:13px}.contact-grid em{margin-left:auto;color:var(--blue);font-style:normal}.contact-grid b a:hover{color:var(--blue)}
.site-footer{padding:52px 0 27px;background:#081329;color:#fff}.footer-top{display:flex;justify-content:space-between;align-items:flex-start;padding-bottom:38px}.footer-top .brand img{width:35px;height:35px}.footer-top p{color:#7e8da8;font-size:13px;margin-top:10px}.footer-top nav{display:flex;gap:24px;color:#aeb9cc;font-size:13px}.footer-top nav a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;padding-top:23px;border-top:1px solid #1b2943;color:#78869d;font-size:12px}
.footer-inner{display:grid;grid-template-columns:1fr auto;align-items:start;gap:28px}.footer-brand .brand-name{font-size:19px;font-weight:800}.footer-brand p{color:#7e8da8;font-size:13px;margin-top:6px}.footer-links{display:flex;gap:22px;color:#aeb9cc;font-size:13px}.footer-links a:hover{color:#fff}.footer-meta{grid-column:1/-1;display:flex;justify-content:space-between;padding-top:22px;border-top:1px solid #1b2943;color:#78869d;font-size:12px}
.page-hero{padding:72px 0 45px;background:linear-gradient(135deg,#eef5ff,#f7f9ff);text-align:center}.page-hero h1{font-size:39px;margin-bottom:6px}.page-hero p{color:var(--muted)}.legal{padding:55px 0 90px}.legal-body{max-width:850px;margin:auto}.back-home{display:inline-block;color:var(--blue);margin-bottom:22px}.updated{padding:13px 16px;background:var(--soft);border-radius:10px;color:var(--muted);font-size:13px}.legal-body h2{font-size:20px;margin:34px 0 12px}.legal-body h3{font-size:16px;margin:22px 0 8px}.legal-body p,.legal-body li{color:#4f5d75;font-size:14px}.legal-body ul{padding-left:22px}.legal-body li{margin:7px 0;word-break:break-word}
.reveal{opacity:0;transform:translateY(18px);transition:opacity .65s,transform .65s}.reveal.visible{opacity:1;transform:none}
@media(max-width:900px){.nav{display:none;position:absolute;top:71px;left:0;right:0;padding:18px 24px;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;gap:17px}.nav.open{display:flex}.nav-toggle{display:block}.hero{padding:70px 0}.hero-inner,.security-grid,.moments-grid{grid-template-columns:1fr;gap:50px}.hero-copy{text-align:center}.hero-copy>p{margin-left:auto;margin-right:auto}.hero-actions,.trust-row{justify-content:center}.hero h1{font-size:48px}.hero-visual{height:480px}.feature-grid{grid-template-columns:1fr 1fr}.card.featured{grid-row:span 1;min-height:350px;grid-column:span 2}.mini-chat{display:none}.security-copy{text-align:center}.security-list{text-align:left}.moments-copy{order:-1;text-align:center}.moments-copy ul{display:inline-block;text-align:left}.platform-box{flex-direction:column;gap:35px;align-items:flex-start}.contact-grid{grid-template-columns:1fr}.footer-top{gap:25px;flex-direction:column}.footer-top nav,.footer-links{flex-wrap:wrap}}
@media(max-width:580px){.container{width:min(100% - 32px,var(--max))}.hero{padding-top:55px}.hero h1{font-size:39px}.hero-copy>p{font-size:16px}.trust-row{gap:9px;flex-wrap:wrap}.hero-visual{height:420px;transform:scale(.86);margin:-25px -30px}.feature-grid{grid-template-columns:1fr}.card.featured{grid-column:auto;min-height:260px}.section{padding:72px 0}.section-head h2,.moments-copy h2,.security-copy>h2{font-size:32px}.feed{width:100%}.moments-grid{gap:50px}.shield-wrap{height:340px}.rings{width:270px;height:270px}.platform-box{padding:38px 24px}.device-list{width:100%;flex-direction:column}.device-list span{width:100%}.footer-bottom,.footer-meta{gap:12px;flex-direction:column}.footer-inner{grid-template-columns:1fr}.footer-links,.footer-meta{grid-column:1}.float-card{transform:scale(.85)}.privacy{left:-20px}.devices{right:-27px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}}