:root{--bg:#f5f8fb;--surface:#fff;--ink:#10233f;--ink-soft:#304764;--muted:#60748c;--line:#dbe5ee;--line-strong:#c4d2df;--blue:#12a99e;--blue-hover:#0a8d86;--blue-deep:#0b3156;--blue-soft:#55d5cb;--blue-tint:#e3f7f5;--navy:#071a32;--navy-soft:#9bb0c6;--radius:12px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;line-height:1.65}::selection{background:var(--blue);color:#fff}:focus-visible{outline:2px solid var(--blue-soft);outline-offset:2px}a{color:inherit;text-decoration:none}.wrap{max-width:1120px;margin:0 auto;padding:0 24px}section[id]{scroll-margin-top:80px}.btn{cursor:pointer;border:1px solid #0000;border-radius:8px;align-items:center;gap:8px;padding:14px 30px;font-size:15px;font-weight:600;transition:background .15s,color .15s,border-color .15s,box-shadow .15s;display:inline-flex}.btn-primary{background:linear-gradient(135deg, var(--blue) 0%, var(--blue-hover) 100%);color:#fff;box-shadow:0 6px 18px #1890ff59}.btn-primary:hover{background:linear-gradient(135deg, var(--blue-hover) 0%, var(--blue-deep) 100%);box-shadow:0 8px 22px #1890ff73}.btn-outline{background:var(--surface);border-color:var(--line-strong);color:var(--ink)}.btn-outline:hover{background:var(--blue);border-color:var(--blue);color:#fff}.btn-sm{padding:9px 18px;font-size:14px}.promo-bar{color:#b9ccdd;text-align:center;letter-spacing:.2px;background:#071a32;padding:10px 16px;font-size:13.5px}.promo-bar strong{color:#fff;font-weight:700}.promo-bar .timer{color:#fff;font-variant-numeric:tabular-nums;font-weight:700}.site-nav{z-index:50;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);background:#f5f8fbe6;position:sticky;top:0}.nav-inner{justify-content:space-between;align-items:center;height:68px;display:flex}.logo{align-items:center;gap:10px;font-size:17px;font-weight:700;display:flex}.brand-logo{object-fit:contain;flex-shrink:0;display:block}.nav-links{color:var(--muted);gap:30px;font-size:14.5px;display:flex}.nav-links a:hover{color:var(--blue)}.nav-actions{align-items:center;gap:12px;display:flex}.eyebrow{letter-spacing:2px;color:var(--blue);align-items:center;gap:10px;font-size:13px;font-weight:600;display:flex}.eyebrow:before{content:"";background:var(--blue);border-radius:2px;flex-shrink:0;width:8px;height:8px}.sec-head{margin-bottom:52px}.sec-head h2{letter-spacing:.5px;margin:18px 0 12px;font-size:clamp(26px,3.6vw,34px);font-weight:800}.sec-head .sec-sub{color:var(--muted);max-width:540px}.hero{background:radial-gradient(640px 320px at 88% -6%,#12a99e24,#0000 70%),radial-gradient(520px 300px at -8% 28%,#0b315614,#0000 70%);padding:88px 0 92px}.hero-grid{grid-template-columns:1.05fr .95fr;align-items:center;gap:60px;display:grid}.hero h1{letter-spacing:.5px;margin:24px 0 22px;font-size:clamp(36px,4.6vw,54px);font-weight:800;line-height:1.3}.hero h1 .accent{background:linear-gradient(135deg, var(--blue) 0%, #0b6f79 100%);color:#0000;-webkit-background-clip:text;background-clip:text}.hero .sub{color:var(--muted);max-width:500px;font-size:16.5px}.hero .cta-row{flex-wrap:wrap;gap:14px;margin-top:38px;display:flex}.hero-note{color:var(--muted);margin-top:22px;font-size:13px}.hero-note span+span:before{content:"·";margin:0 12px}.stats{border-top:1px solid var(--line);grid-template-columns:repeat(4,1fr);margin-top:80px;padding-top:42px;display:grid}.stat{border-left:1px solid var(--line);padding:0 30px}.stat:first-child{border-left:none;padding-left:0}.stat .num{letter-spacing:.5px;color:var(--blue);font-size:30px;font-weight:800}.stat .label{color:var(--muted);margin-top:4px;font-size:13px}.features{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#edf3f6;padding:88px 0}.feature-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}.feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;transition:border-color .15s,box-shadow .15s}.feature:hover{border-color:var(--blue-soft);box-shadow:0 10px 28px #071f3914}.feature .icon{background:var(--blue-tint);width:46px;height:46px;color:var(--blue);border-radius:12px;justify-content:center;align-items:center;display:inline-flex}.feature h3{margin:18px 0 8px;font-size:16.5px;font-weight:700}.feature p{color:var(--muted);font-size:14px}.speed-band{color:#fff;background:linear-gradient(120deg,#071a32 0%,#0b3156 62%,#0b6f79 100%);padding:96px 0}.speed-band .eyebrow{color:#bfe3ff}.speed-band .eyebrow:before{background:#bfe3ff}.speed-band blockquote{max-width:760px;margin:24px 0 26px;font-size:clamp(23px,3.4vw,34px);font-weight:700;line-height:1.7}.speed-band blockquote .accent{color:#bfe9ff}.speed-band>.wrap>p{color:#ffffffd1;max-width:620px}.pricing{padding:88px 0}.price-grid{grid-template-columns:repeat(3,1fr);align-items:stretch;gap:20px;padding-top:14px;display:grid}.plan{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);flex-direction:column;padding:34px 30px;display:flex;position:relative}.plan.hot{border:2px solid var(--blue);box-shadow:0 14px 36px #1890ff29}.plan .tag{background:linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);color:#fff;letter-spacing:1px;white-space:nowrap;border-radius:4px;padding:4px 12px;font-size:12px;font-weight:700;position:absolute;top:-13px;left:28px}.plan h3{font-size:17px;font-weight:700}.plan .plan-desc{color:var(--muted);margin-top:2px;font-size:13px}.plan .price{align-items:baseline;gap:6px;margin:24px 0 4px;display:flex}.plan .price .amount{letter-spacing:.5px;font-size:42px;font-weight:800}.plan .price .unit{color:var(--muted);font-size:14px}.plan .bill{color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:20px;font-size:13px}.plan ul{flex:1;margin:18px 0 26px;list-style:none}.plan li{color:var(--ink-soft);align-items:center;gap:10px;padding:6px 0;font-size:14px;display:flex}.plan li svg{color:var(--blue);flex-shrink:0}.plan .btn{justify-content:center}.guarantee{text-align:center;color:var(--muted);margin-top:30px;font-size:14px}.faq{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#edf3f6;padding:88px 0}.faq-list{border-top:1px solid var(--line-strong);max-width:760px}.faq-item{border-bottom:1px solid var(--line-strong)}.faq-q{width:100%;color:var(--ink);text-align:left;cursor:pointer;background:0 0;border:none;justify-content:space-between;align-items:center;gap:16px;padding:22px 4px;font-family:inherit;font-size:16px;font-weight:600;display:flex}.faq-icon{color:var(--blue);flex-shrink:0;transition:transform .2s;display:inline-flex}.faq-item.open .faq-icon{transform:rotate(45deg)}.faq-a{grid-template-rows:0fr;transition:grid-template-rows .25s;display:grid}.faq-item.open .faq-a{grid-template-rows:1fr}.faq-a-inner{overflow:hidden}.faq-a-inner p{color:var(--muted);max-width:640px;padding:0 4px 24px;font-size:14.5px}.final-cta{text-align:center;background:radial-gradient(560px 280px at 50% 0,#12a99e24,#0000 70%);padding:96px 0}.final-cta .cta-brand{justify-content:center;margin-bottom:28px;display:flex}.final-cta h2{margin-bottom:14px;font-size:clamp(26px,4vw,36px);font-weight:800}.final-cta p{color:var(--muted);margin-bottom:34px}footer{background:var(--navy);color:var(--navy-soft);border-top:1px solid #22335f;padding:44px 0 40px;font-size:13px}.footer-inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;display:flex}.footer-brand{align-items:center;gap:10px;display:flex}.footer-links{gap:26px;display:flex}.footer-links a:hover{color:#fff}.disclaimer{color:#5e7290;max-width:820px;margin-top:22px}@media (max-width:860px){.nav-links{display:none}.hero{padding:56px 0 64px}.hero-grid{grid-template-columns:1fr;gap:44px}.stats{grid-template-columns:repeat(2,1fr);gap:28px 0;margin-top:56px}.stat{border-left:none;padding:0}.feature-grid{grid-template-columns:1fr}.price-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}.plan.hot{order:-1}.features,.pricing,.faq{padding:64px 0}.speed-band,.final-cta{padding:72px 0}}.download{padding:88px 0}.dl-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.dl-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);grid-template-rows:1fr auto;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:18px;padding:26px 28px;transition:border-color .15s,box-shadow .15s;display:grid}.dl-card:hover{border-color:var(--blue);box-shadow:0 10px 26px #1890ff24}.dl-icon{color:var(--blue);flex-shrink:0;display:inline-flex}.dl-info{flex-direction:column;gap:3px;min-width:0;display:flex}.dl-info strong{font-size:16.5px;font-weight:700}.dl-info small{color:var(--muted);overflow-wrap:anywhere;font-size:13px}.dl-btn{background:var(--blue-tint);color:var(--blue);border-radius:8px;flex-shrink:0;grid-column:1/-1;justify-content:center;align-items:center;gap:6px;padding:12px 16px;font-size:14.5px;font-weight:600;display:inline-flex}@media (max-width:860px){.download{padding:64px 0}.dl-grid{grid-template-columns:1fr;max-width:440px;margin:0 auto}}.invite-band{background:var(--surface);border-bottom:1px solid var(--line-strong);text-align:center;padding:44px 0 48px}.invite-band .eyebrow{justify-content:center}.invite-code{letter-spacing:4px;color:var(--blue);font-variant-numeric:tabular-nums;word-break:break-all;margin:16px 0 24px;font-size:clamp(40px,8vw,64px);font-weight:800;line-height:1.2}.dl-card-hot{border:2px solid var(--blue);box-shadow:0 12px 30px #1890ff29}.dl-card-hot .dl-btn{background:linear-gradient(135deg, var(--blue) 0%, var(--blue-hover) 100%);color:#fff;border-radius:999px;padding:12px 24px;font-size:16px;box-shadow:0 6px 16px #1890ff59}.dl-card-hot:hover .dl-btn{background:linear-gradient(135deg, var(--blue-hover) 0%, var(--blue-deep) 100%)}@media (max-width:860px){.dl-card-hot{order:-1}.dl-card-hot .dl-btn{padding:14px 28px;font-size:17px}}.android-page{background:radial-gradient(640px 320px at 88% -6%,#1890ff29,#0000 70%),radial-gradient(520px 300px at -8% 28%,#1890ff1a,#0000 70%);min-height:100vh}.android-hero{text-align:center;padding:72px 0 24px}.android-badge{background:var(--surface);border:1px solid var(--line);width:92px;height:92px;color:var(--blue);border-radius:26px;justify-content:center;align-items:center;display:inline-flex;box-shadow:0 12px 30px #143c8c1a}.android-hero h1{letter-spacing:.5px;margin:24px 0 12px;font-size:clamp(28px,6vw,40px);font-weight:800}.android-sub{color:var(--muted);max-width:460px;margin:0 auto}.android-dl-btn{background:linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);color:#fff;border-radius:18px;justify-content:center;align-items:center;gap:14px;width:100%;max-width:420px;margin:34px auto 0;padding:22px 28px;transition:transform .15s,box-shadow .15s;display:flex;box-shadow:0 14px 34px #1890ff66}.android-dl-btn:hover{transform:translateY(-2px);box-shadow:0 18px 40px #1890ff80}.android-dl-btn:active{transform:translateY(0)}.android-dl-text{text-align:left;flex-direction:column;align-items:flex-start;gap:2px;display:flex}.android-dl-text strong{letter-spacing:.5px;font-size:21px;font-weight:800}.android-dl-text small{opacity:.85;font-size:13px}.android-note{color:var(--muted);margin-top:18px;font-size:13px}.android-note span+span:before{content:"·";margin:0 12px}.android-variants{max-width:420px;color:var(--muted);margin:24px auto 0;font-size:13px}.android-variant-links{flex-wrap:wrap;justify-content:center;gap:10px;margin-top:10px;display:flex}.android-variant-links a{border:1px solid var(--line-strong);color:var(--blue);border-radius:8px;flex-direction:column;align-items:center;gap:2px;padding:8px 12px;font-size:13px;font-weight:700;display:inline-flex}.android-variant-links a:hover{border-color:var(--blue);background:var(--blue-tint)}.android-variant-links small{color:var(--muted);font-size:11px;font-weight:400}.android-ios-tip{background:var(--surface);border:2px solid var(--blue);border-radius:16px;max-width:420px;margin:34px auto 0;padding:26px 22px;box-shadow:0 12px 30px #1890ff29}.android-ios-tip strong{color:var(--ink);font-size:17px;font-weight:800;display:block}.android-ios-tip p{color:var(--muted);margin:10px 0 18px;font-size:14.5px}.ios-invite-link{overflow-wrap:anywhere}.ios-invite-link a{color:var(--blue-deep);text-underline-offset:3px;text-decoration:underline}.android-status{margin-top:44px}.android-status-title{background:linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 100%);color:#fff;letter-spacing:1px;border-radius:999px;width:fit-content;max-width:100%;margin:0 auto 18px;padding:10px 30px;font-size:18px;font-weight:700;box-shadow:0 4px #0b5bd359}.android-dots i{opacity:0;font-style:normal;animation:1.2s infinite android-dot}.android-dots i:nth-child(2){animation-delay:.2s}.android-dots i:nth-child(3){animation-delay:.4s}@keyframes android-dot{0%,60%,to{opacity:0}30%{opacity:1}}.android-status-box{background:var(--surface);border:1px solid var(--line-strong);max-width:420px;color:var(--ink-soft);border-radius:16px;margin:0 auto;padding:24px 22px;font-size:15px;box-shadow:0 10px 26px #143c8c14}.android-status-box hr{border:0;border-top:2px dotted var(--line-strong);margin:18px 0}.android-status-box a{color:var(--blue);align-items:center;gap:4px;margin-left:6px;font-weight:600;display:inline-flex}.android-status-box a:hover{color:var(--blue-deep)}.android-guide{text-align:center;padding:52px 0 88px}.android-guide h2{margin-bottom:26px;font-size:22px;font-weight:800}.android-steps{text-align:left;flex-direction:column;gap:14px;max-width:420px;margin:0 auto;list-style:none;display:flex}.android-steps li{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);align-items:flex-start;gap:14px;padding:18px 20px;display:flex}.android-step-num{background:var(--blue-tint);width:30px;height:30px;color:var(--blue);border-radius:50%;flex-shrink:0;place-items:center;font-size:15px;font-weight:800;display:grid}.android-steps strong{font-size:15.5px;font-weight:700}.android-steps p{color:var(--muted);margin-top:3px;font-size:13.5px}@media (max-width:860px){.android-hero{padding:56px 0 16px}}