:root{--blue:#0879f9;--navy:#071a3e;--text:#11213f;--muted:#66748b;--line:#e3e9f2;--soft:#f4f8fd;font-family:"PingFang SC","Noto Sans SC","Microsoft YaHei",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:#fff;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a{-webkit-tap-highlight-color:transparent}a:focus-visible{outline:3px solid #0879f955;outline-offset:3px}.download-header{height:72px;border-bottom:1px solid #edf0f5;background:#fff}.download-header-inner{width:min(1120px,calc(100% - 48px));height:100%;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:24px}.download-brand img{width:158px;display:block}.download-nav{display:flex;align-items:center;gap:30px;color:#40516d;font-size:14px}.download-nav a:hover,.download-nav a.active{color:var(--blue)}.download-main{width:min(1120px,calc(100% - 48px));margin:auto}.breadcrumb{display:flex;align-items:center;gap:8px;padding:24px 0 6px;color:#8995a8;font-size:13px}.breadcrumb a:hover{color:var(--blue)}.download-hero{min-height:430px;display:grid;grid-template-columns:1.08fr .92fr;align-items:center;gap:54px;padding:36px 0 50px}.download-kicker{margin:0 0 13px;color:var(--blue);font-size:15px;font-weight:700}.download-hero h1{margin:0;color:var(--navy);font-size:48px;line-height:1.18;letter-spacing:-.035em}.download-lead{max-width:570px;margin:20px 0 0;color:var(--muted);font-size:16px;line-height:1.8}.download-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:29px}.download-button{min-width:170px;height:50px;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:0 22px;border:1px solid transparent;border-radius:12px;font-size:15px;font-weight:700;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.download-button:hover{transform:translateY(-2px)}.download-button.primary{color:#fff;background:var(--blue);box-shadow:0 12px 26px #0879f92b}.download-button.primary img{width:18px;height:18px;filter:brightness(0) invert(1)}.download-button.secondary{color:var(--text);border-color:var(--line);background:#fff}.download-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:22px;color:#738097;font-size:13px}.download-meta span{display:flex;align-items:center;gap:6px}.download-meta img{width:15px;height:15px}.platform-showcase{min-height:320px;display:grid;place-items:center;border:1px solid #dfe8f4;border-radius:30px;background:var(--soft);box-shadow:0 20px 50px #173b7112}.platform-showcase-inner{text-align:center}.platform-showcase img{width:128px;height:128px;object-fit:contain}.platform-showcase h2{margin:18px 0 0;color:var(--navy);font-size:25px}.platform-showcase p{margin:8px 0 0;color:var(--muted);font-size:13px}.download-section{padding:64px 0;border-top:1px solid #edf0f5}.section-heading{max-width:680px;margin-bottom:30px}.section-heading .eyebrow{margin:0 0 8px;color:var(--blue);font-size:13px;font-weight:700}.section-heading h2{margin:0;color:var(--navy);font-size:31px}.section-heading p{margin:10px 0 0;color:var(--muted);font-size:14px;line-height:1.7}.info-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:18px}.info-card{padding:27px;border:1px solid var(--line);border-radius:18px;background:#fff}.info-card h3{margin:0 0 17px;color:var(--navy);font-size:18px}.requirements{display:grid;gap:12px;margin:0;padding:0;list-style:none}.requirements li{display:flex;align-items:flex-start;gap:9px;color:#53627b;font-size:14px;line-height:1.55}.requirements img{width:16px;height:16px;margin-top:2px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.step{padding:21px;border-radius:14px;background:var(--soft)}.step-number{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;color:#fff;background:var(--blue);font-size:13px;font-weight:700}.step h4{margin:16px 0 7px;color:var(--navy);font-size:15px}.step p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}.other-platforms{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.other-platform{min-height:116px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);border-radius:16px;background:#fff;color:#32445f;font-size:13px;font-weight:700;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.other-platform:hover{transform:translateY(-3px);border-color:#99c9ff;box-shadow:0 12px 28px #0879f918}.other-platform.active{border-color:#66adff;background:#f5faff;color:var(--blue)}.other-platform img{width:38px;height:38px;object-fit:contain}.download-footer{margin-top:20px;border-top:1px solid var(--line)}.download-footer-inner{width:min(1120px,calc(100% - 48px));min-height:92px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;color:#8793a8;font-size:12px}.download-footer nav{display:flex;gap:20px}.download-footer a:hover{color:var(--blue)}
@media(max-width:760px){.download-header{height:64px}.download-header-inner,.download-main,.download-footer-inner{width:calc(100% - 32px)}.download-brand img{width:145px}.download-nav{gap:16px;font-size:13px}.download-nav a:nth-child(2){display:none}.breadcrumb{padding-top:18px}.download-hero{min-height:0;grid-template-columns:1fr;gap:30px;padding:28px 0 44px}.download-hero-copy{text-align:center}.download-kicker{font-size:13px}.download-hero h1{font-size:clamp(34px,10vw,43px)}.download-lead{font-size:15px}.download-actions,.download-meta{justify-content:center}.download-button{width:100%}.platform-showcase{min-height:260px;border-radius:24px}.platform-showcase img{width:104px;height:104px}.download-section{padding:48px 0}.section-heading h2{font-size:26px}.info-grid{grid-template-columns:1fr}.info-card{padding:22px}.steps{grid-template-columns:1fr}.other-platforms{grid-template-columns:repeat(2,1fr)}.other-platform{min-height:110px}.download-footer-inner{padding:24px 0;align-items:flex-start;flex-direction:column}.download-footer nav{flex-wrap:wrap}}
.download-faq{display:grid;gap:10px}.download-faq details{overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff;transition:border-color .18s ease,box-shadow .18s ease}.download-faq details[open]{border-color:#b5d7ff;box-shadow:0 10px 26px #0879f910}.download-faq summary{min-height:58px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 20px;color:var(--navy);font-size:15px;font-weight:650;cursor:pointer;list-style:none}.download-faq summary::-webkit-details-marker{display:none}.download-faq summary::after{content:"+";width:25px;height:25px;display:grid;place-items:center;flex:0 0 auto;border-radius:50%;color:var(--blue);background:#eef6ff;font-size:18px;font-weight:400;line-height:1}.download-faq details[open] summary::after{content:"−"}.download-faq p{margin:0;padding:0 20px 20px;color:var(--muted);font-size:14px;line-height:1.75}.faq-more{width:fit-content;margin:18px auto 0;display:block;color:var(--blue);font-size:14px;font-weight:650}.faq-more:hover{text-decoration:underline}
@media(max-width:760px){.download-faq summary{min-height:64px;padding:0 16px;font-size:14px}.download-faq p{padding:0 16px 18px;font-size:13px}}
.history-hero{max-width:760px;padding:70px 0 48px}.history-hero .download-kicker{margin-bottom:12px}.history-hero h1{margin:0;color:var(--navy);font-size:48px;line-height:1.2;letter-spacing:-.035em}.history-hero p:last-child{margin:18px 0 0;color:var(--muted);font-size:16px;line-height:1.8}.history-platform-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;padding-bottom:56px}.history-platform-nav a{min-height:78px;display:flex;align-items:center;justify-content:center;gap:10px;border:1px solid var(--line);border-radius:15px;background:#fff;color:#354861;font-size:14px;font-weight:700;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.history-platform-nav a:hover{transform:translateY(-2px);border-color:#91c6ff;box-shadow:0 10px 24px #0879f914}.history-platform-nav img{width:30px;height:30px;object-fit:contain}.history-section{padding:55px 0;border-top:1px solid #edf0f5;scroll-margin-top:20px}.history-section-header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:24px}.history-platform-title{display:flex;align-items:center;gap:13px}.history-platform-title img{width:42px;height:42px;object-fit:contain}.history-platform-title h2{margin:0;color:var(--navy);font-size:28px}.history-download{color:var(--blue);font-size:14px;font-weight:700}.release-list{display:grid;gap:14px}.release-card{display:grid;grid-template-columns:205px 1fr;gap:25px;padding:26px;border:1px solid var(--line);border-radius:17px;background:#fff}.release-card.latest{border-color:#8fc4ff;background:#f8fbff;box-shadow:0 12px 30px #0879f910}.release-version{display:flex;align-items:flex-start;flex-direction:column;gap:8px}.release-version strong{color:var(--navy);font-size:18px}.release-version time{color:#8491a5;font-size:12px}.release-badge{padding:4px 9px;border-radius:999px;color:var(--blue);background:#eaf4ff;font-size:10px;font-weight:700}.release-notes{margin:0;padding-left:19px;color:#56657c;font-size:14px;line-height:1.8}.history-source{margin:28px 0 0;color:#8190a5;font-size:12px;line-height:1.7}.history-source a{color:var(--blue)}
@media(max-width:760px){.download-nav a:nth-child(2),.download-nav a:nth-child(4){display:none}.history-hero{padding:48px 0 36px;text-align:center}.history-hero h1{font-size:38px}.history-hero p:last-child{font-size:15px}.history-platform-nav{grid-template-columns:repeat(2,1fr);padding-bottom:42px}.history-platform-nav a{min-height:70px}.history-section{padding:45px 0}.history-section-header{align-items:flex-start;flex-direction:column}.release-card{grid-template-columns:1fr;gap:17px;padding:21px}.release-version{flex-direction:row;align-items:center;flex-wrap:wrap}.history-platform-title h2{font-size:25px}}
.qr-modal[hidden]{display:none}.qr-modal{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:16px;background:#071a3e99;backdrop-filter:blur(7px)}.qr-dialog{position:relative;width:min(390px,100%);max-height:calc(100dvh - 32px);overflow-y:auto;padding:28px 26px 24px;border-radius:24px;background:#fff;text-align:center;box-shadow:0 24px 80px #071a3e40}.qr-close{position:absolute;top:15px;right:15px;width:38px;height:38px;display:grid;place-items:center;border:0;border-radius:50%;background:#f2f6fb;cursor:pointer}.qr-close img{width:19px;height:19px}.qr-kicker{margin:4px 42px 9px;color:var(--blue);font-size:12px;font-weight:700}.qr-dialog h2{margin:0;color:var(--navy);font-size:24px;line-height:1.35}.qr-dialog>p:not(.qr-kicker){margin:10px auto 0;max-width:290px;color:var(--muted);font-size:13px;line-height:1.65}.qr-image-wrap{width:224px;height:224px;margin:20px auto 18px;padding:10px;border:1px solid #dbe7f5;border-radius:18px;background:#fff;box-shadow:0 12px 30px #173b7116}.qr-image{width:100%;height:100%;display:block;border-radius:9px}.qr-continue,.qr-cancel{width:100%;height:46px;display:flex;align-items:center;justify-content:center;border-radius:11px;font-size:14px;font-weight:700}.qr-continue{color:#fff;background:var(--blue);box-shadow:0 10px 22px #0879f926}.qr-cancel{margin-top:9px;border:1px solid var(--line);color:#4b5a72;background:#fff;cursor:pointer}.qr-modal-open{overflow:hidden}
.qr-trigger{display:inline-flex;border:1px solid #9bcaff;color:var(--blue);background:#f2f8ff;cursor:pointer}
.download-version{width:fit-content;margin-top:18px;display:flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid #d8e7f8;border-radius:999px;color:#617087;background:#f7fbff;font-size:12px}.download-version strong{color:var(--blue);font-size:13px}.download-version span{padding-left:8px;border-left:1px solid #d8e7f8;color:#73839a}.download-version:hover{border-color:#9bcaff;background:#eef7ff}.download-version:focus-visible{outline:3px solid #0879f955;outline-offset:3px}
@media(max-width:420px){.qr-dialog{padding:25px 20px 20px;border-radius:21px}.qr-image-wrap{width:210px;height:210px}.qr-dialog h2{font-size:22px}}
@media(max-width:760px){.qr-modal{display:none!important}.qr-trigger{display:none}.download-version{margin-right:auto;margin-left:auto}}
.other-platform img{filter:brightness(0) saturate(100%);transition:filter .18s ease}.other-platform.active img{filter:brightness(0) saturate(100%) invert(35%) sepia(98%) saturate(2575%) hue-rotate(199deg) brightness(102%) contrast(96%)}
.platform-showcase.product-showcase{min-height:360px;border:0;background:transparent;box-shadow:none;overflow:visible}
.product-showcase .product-image{width:118%;max-width:650px;height:auto;max-height:430px;display:block;object-fit:contain;filter:drop-shadow(0 24px 30px #173b7118)}
@media(max-width:760px){.platform-showcase.product-showcase{min-height:270px}.product-showcase .product-image{width:108%;max-height:320px}}