@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700;800;900&display=swap");
:root{--ink:#14211f;--paper:#f8f5ed;--white:#fffef9;--teal:#0b8f83;--teal-dark:#075d57;--cobalt:#3155d9;--coral:#ff6f61;--mint:#cceee4;--sand:#eadfc9;--muted:#6c7470;--max:1260px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;overflow-x:hidden;color:var(--ink);background:radial-gradient(circle at 8% 5%,rgba(204,238,228,.7),transparent 27rem),var(--paper);font-family:"Noto Sans SC","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}button{font:inherit}
.site-header{width:min(calc(100% - 44px),var(--max));min-height:90px;margin:0 auto;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:48px;position:relative;z-index:30}
.brand,.footer-brand{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:900;letter-spacing:-.04em}.brand img,.footer-brand img{width:38px;height:38px;object-fit:contain}
.site-nav{display:flex;justify-content:center;gap:31px;color:#4d5955;font-size:14px;font-weight:700}.site-nav a{transition:.2s}.site-nav a:hover{color:var(--teal);transform:translateY(-2px)}
.header-action,.primary-download,.final-cta a{display:inline-flex;align-items:center;justify-content:center;gap:10px;color:var(--white);background:var(--teal);border-radius:999px;font-weight:900;transition:.2s}
.header-action{min-height:46px;padding:0 23px;font-size:14px}.header-action:hover,.primary-download:hover,.final-cta a:hover{transform:translateY(-3px);box-shadow:0 20px 38px rgba(7,93,87,.2)}
.nav-toggle{display:none;width:44px;height:44px;padding:0;color:var(--ink);background:transparent;border:0;font-size:20px;cursor:pointer}
.hero{width:min(calc(100% - 44px),1400px);min-height:720px;margin:20px auto 82px;display:grid;grid-template-columns:.9fr 1.1fr;align-items:center;gap:70px}.hero-copy{padding-left:clamp(0px,4vw,76px)}
.eyebrow,.section-label{margin:0 0 21px;color:var(--teal);font-size:12px;font-weight:900;letter-spacing:.18em;text-transform:uppercase}.section-label.light{color:#9fe2d5}
.hero h1{max-width:700px;margin:0;font-size:clamp(61px,7vw,103px);line-height:.95;letter-spacing:-.078em;font-weight:900}.hero h1 span{color:var(--cobalt)}
.lead{max-width:630px;margin:33px 0 0;color:var(--muted);font-size:18px;line-height:1.95}.hero-actions{margin-top:38px;display:flex;flex-wrap:wrap;align-items:center;gap:25px}.primary-download{min-height:60px;padding:0 32px;font-size:16px}
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.hero-support{margin:27px 0 0;display:flex;flex-wrap:wrap;gap:15px 23px;color:#707a76;font-size:13px}.hero-support i{margin-right:6px;color:var(--teal)}
.hero-figure{min-height:620px;margin:0;display:grid;place-items:center;position:relative}.hero-figure:before{content:"";position:absolute;width:90%;aspect-ratio:1.18;background:var(--mint);clip-path:ellipse(48% 46% at 50% 50%)}.hero-figure:after{content:"";position:absolute;width:165px;height:165px;right:3%;top:9%;background:var(--coral);border-radius:50%}
.hero-figure img{width:min(92%,800px);max-height:580px;object-fit:contain;position:relative;z-index:2;filter:drop-shadow(0 34px 42px rgba(15,75,70,.18))}
.download,.start,.nodes,.update,.faq{width:min(calc(100% - 44px),var(--max));margin-left:auto;margin-right:auto}.download{padding:95px 0 135px}
.download-heading{max-width:820px}.download-heading h2,.start-copy h2,.nodes-copy h2,.plan-heading h2,.update-copy h2,.sync-copy h2,.security-copy h2,.faq-heading h2{margin:0;font-size:clamp(44px,5.3vw,76px);line-height:1.07;letter-spacing:-.064em;font-weight:900}
.download-heading>p:last-child,.start-copy>p,.nodes-copy>p,.sync-copy>p,.security-copy>p{max-width:740px;margin:24px 0 0;color:var(--muted);font-size:17px;line-height:1.9}
.platforms{margin-top:80px;display:grid;grid-template-columns:repeat(4,1fr);gap:48px}.platforms>a{min-width:0;display:flex;flex-direction:column;align-items:flex-start}.platforms>a>i{color:var(--cobalt);font-size:37px}.platforms strong{margin-top:23px;font-size:26px;letter-spacing:-.035em}.platforms span{margin-top:8px;color:var(--muted);font-size:14px}.platforms b{margin-top:23px;display:inline-flex;align-items:center;gap:9px;font-size:14px}.platforms b i{transition:.2s}.platforms>a:hover b i{transform:translateX(5px)}
.start{padding:145px 0 150px;display:grid;grid-template-columns:.95fr 1.05fr;gap:100px;align-items:center}.start-figure{margin:0;min-height:560px;display:grid;place-items:center;background:#dce9ff;clip-path:polygon(6% 1%,94% 5%,100% 42%,88% 98%,13% 100%,0 62%)}.start-figure img{width:100%;max-height:530px;object-fit:contain}
.start-copy ol{margin:43px 0 0;padding:0;display:grid;gap:29px;list-style:none}.start-copy li{display:grid;grid-template-columns:48px 1fr;gap:18px}.start-copy li>span{width:48px;height:48px;display:grid;place-items:center;color:var(--white);background:var(--teal);border-radius:50%;font-size:12px;font-weight:900}.start-copy h3{margin:0 0 8px;font-size:22px}.start-copy li p{margin:0;color:var(--muted);line-height:1.8}
.nodes{padding:135px 0 150px;display:grid;grid-template-columns:1.03fr .97fr;gap:95px;align-items:center}.nodes-copy ul,.security-copy ul{margin:41px 0 0;padding:0;display:grid;gap:23px;list-style:none}.nodes-copy li,.security-copy li{display:grid;grid-template-columns:28px 1fr;gap:15px;color:var(--muted);line-height:1.75}.nodes-copy li i{margin-top:5px;color:var(--coral)}.nodes-figure{margin:0;min-height:550px;display:grid;place-items:center;background:var(--sand);clip-path:circle(48% at 50% 50%)}.nodes-figure img{width:100%;max-height:520px;object-fit:contain}
.plan{min-height:860px;padding:145px max(22px,calc((100vw - var(--max))/2));display:grid;grid-template-columns:.78fr 1.22fr;gap:105px;color:var(--white);background:radial-gradient(circle at 13% 17%,rgba(255,111,97,.22),transparent 23rem),var(--cobalt);clip-path:polygon(0 5%,91% 0,100% 8%,97% 95%,14% 100%,0 91%)}
.plan-heading>p:last-child{max-width:720px;margin:24px 0 0;color:rgba(255,255,249,.72);font-size:17px;line-height:1.9}.plan-points{display:grid;grid-template-columns:repeat(2,1fr);gap:56px 64px}.plan-points article>span{color:#9fe2d5;font-size:12px;font-weight:900;letter-spacing:.15em}.plan-points h3{margin:10px 0;font-size:25px}.plan-points p{margin:0;color:rgba(255,255,249,.7);line-height:1.85}
.update{padding:145px 0 150px;display:grid;grid-template-columns:.9fr 1.1fr;gap:110px;align-items:start}.update-copy h2{color:var(--teal);font-size:clamp(90px,13vw,175px);line-height:.84}.update-date{margin:22px 0 0;color:var(--coral);font-size:14px;font-weight:800}.update-intro{max-width:630px;margin:22px 0 0;color:var(--muted);line-height:1.9}.update-points{display:grid;gap:42px;padding-top:26px}.update-points p{margin:0;display:grid;grid-template-columns:58px 1fr;gap:6px 20px}.update-points span{grid-row:1/span 2;color:var(--cobalt);font-size:13px;font-weight:900;letter-spacing:.13em}.update-points b{font-size:23px}.update-points em{color:var(--muted);font-size:15px;font-style:normal;line-height:1.8}
.sync{padding:135px max(22px,calc((100vw - var(--max))/2));display:grid;grid-template-columns:1.02fr .98fr;gap:95px;align-items:center;color:var(--white);background:var(--teal-dark)}.sync-figure{margin:0;min-height:560px;display:grid;place-items:center;background:var(--mint);clip-path:ellipse(49% 46% at 50% 50%)}.sync-figure img{width:100%;max-height:530px;object-fit:contain}.sync-copy>p{color:rgba(255,255,249,.72)}.sync-copy>a{margin-top:34px;display:inline-flex;align-items:center;gap:11px;color:#9fe2d5;font-weight:900}.sync-copy>a i{transition:.2s}.sync-copy>a:hover i{transform:translateX(5px)}
.security{padding:145px max(22px,calc((100vw - var(--max))/2));display:grid;grid-template-columns:.96fr 1.04fr;gap:95px;align-items:center;background:#efe8da}.security-copy li i{margin-top:5px;color:var(--teal)}.security-figure{margin:0;min-height:560px;display:grid;place-items:center;background:var(--mint);clip-path:polygon(7% 1%,93% 4%,100% 43%,87% 98%,15% 100%,0 62%)}.security-figure img{width:100%;max-height:530px;object-fit:contain}
.faq{padding:140px 0 155px;display:grid;grid-template-columns:.72fr 1.28fr;gap:120px;align-items:start}.faq-heading{position:sticky;top:95px}.faq-list{display:grid;gap:34px}.faq-list summary{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;cursor:pointer;list-style:none;font-size:20px;line-height:1.55;font-weight:900}.faq-list summary::-webkit-details-marker{display:none}.faq-list summary i{margin-top:8px;color:var(--teal);font-size:14px;transition:.2s}.faq-list details[open] summary i{transform:rotate(45deg)}.faq-list p{max-width:760px;margin:14px 0 0;color:var(--muted);line-height:1.85}
.final-cta{min-height:500px;padding:90px 24px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;color:var(--white);background:radial-gradient(circle at 18% 18%,rgba(204,238,228,.22),transparent 17rem),var(--cobalt)}.final-cta>p{margin:0 0 17px;color:#9fe2d5;font-size:12px;font-weight:900;letter-spacing:.16em}.final-cta h2{max-width:930px;margin:0;font-size:clamp(52px,7vw,98px);line-height:1;letter-spacing:-.075em;font-weight:900}.final-cta a{min-height:62px;margin-top:40px;padding:0 34px;color:var(--cobalt);background:var(--mint);font-size:17px}.final-cta>span{margin-top:19px;color:rgba(255,255,249,.58);font-size:13px}
.footer{width:min(calc(100% - 44px),var(--max));min-height:126px;margin:0 auto;display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:38px;color:#707872;font-size:13px}.footer-brand{color:var(--ink);font-size:18px}.footer-brand img{width:31px;height:31px}
@media(max-width:1040px){.site-header{grid-template-columns:auto 1fr auto auto;gap:16px}.site-nav{display:none;position:fixed;inset:78px 0 auto;width:100%;padding:35px 24px 39px;flex-direction:column;align-items:center;gap:24px;background:rgba(248,245,237,.98);backdrop-filter:blur(18px)}.site-nav.is-open{display:flex}.nav-toggle{display:grid;place-items:center}.header-action{justify-self:end}.hero{grid-template-columns:1fr;min-height:auto;padding-top:55px}.hero-copy{max-width:830px}.hero-figure{max-width:900px;width:100%;margin:0 auto}.start,.nodes,.plan,.update,.sync,.security,.faq{grid-template-columns:1fr}.plan{clip-path:polygon(0 3%,91% 0,100% 4%,97% 97%,14% 100%,0 94%)}.start-figure,.nodes-figure,.sync-figure,.security-figure{max-width:800px;width:100%;margin:0 auto}.faq-heading{position:static}}
@media(max-width:720px){.site-header{width:min(calc(100% - 28px),var(--max));min-height:76px;grid-template-columns:auto 1fr auto}.header-action{display:none}.hero,.download,.start,.nodes,.update,.faq,.footer{width:min(calc(100% - 30px),var(--max))}.hero{margin-top:0;margin-bottom:35px;gap:35px}.hero-copy{padding-left:0}.hero h1{font-size:clamp(52px,15vw,72px)}.lead{margin-top:25px;font-size:16px;line-height:1.85}.hero-actions{flex-direction:column;align-items:stretch;gap:18px}.primary-download{width:100%}.text-link{justify-content:center}.hero-figure{min-height:390px}.hero-figure:before{width:100%}.hero-figure:after{width:110px;height:110px}.hero-figure img{max-height:370px}.download,.start,.nodes,.update,.faq{padding-top:84px;padding-bottom:92px}.platforms{margin-top:55px;grid-template-columns:1fr;gap:49px}.start,.nodes{gap:48px}.start-figure,.nodes-figure,.sync-figure,.security-figure{min-height:360px}.plan{min-height:auto;padding-top:105px;padding-bottom:115px;gap:52px;clip-path:polygon(0 2%,91% 0,100% 3%,97% 98%,14% 100%,0 96%)}.plan-points{grid-template-columns:1fr;gap:47px}.update{gap:48px}.update-copy h2{font-size:84px}.sync,.security{padding-top:90px;padding-bottom:95px;gap:48px}.faq{gap:52px}.faq-list summary{font-size:18px}.final-cta{min-height:430px;padding:75px 20px}.final-cta h2{font-size:clamp(49px,14vw,69px)}.footer{padding:36px 0;grid-template-columns:1fr;gap:13px;text-align:center}.footer-brand{justify-content:center}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}