:root{--download-bg:#D13F00;--download-hover:#B63600;--download-fg:#FFFFFF;--orange:#FF5500;--blue:#155CC3;--ink:#182230;--muted:#475467;--orange-ink:#A8390A;--blue-ink:#104A9F;--line:#D5DFEB;--ease:cubic-bezier(.4,0,.2,1);--page:1200px;--orange-hover:#FF6724;--orange-tint-rgb:255,85,0;--blue-rgb:21,92,195;--canvas-warm:#F7F9FC;--canvas-cool:#F2F6FA;--surface-warm:#FCFDFF;--surface-cool:#F3F6FA;--surface-warm-rgb:252,253,255;--surface-cool-rgb:243,246,250;--heading-emphasis:#182230;--control-line:#7C8DA5;--shadow:0 8px 24px -18px rgba(24,34,48,.18)}
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:96px}
    body{margin:0;padding-top:70px;color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word;background:var(--canvas-warm);}
    ::selection{background:rgba(var(--orange-tint-rgb),0.1495);color:var(--ink)}
    h2,h3,p,dl,dd{margin:0}h2,h3{text-wrap:balance}
    a{color:inherit;text-decoration:none;touch-action:manipulation}
    button{font:inherit;color:inherit;cursor:pointer;border:0;touch-action:manipulation}
    a,button{-webkit-tap-highlight-color:rgba(var(--orange-tint-rgb),0.0975)}
    a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:5px;border-radius:8px}
    svg{display:block;flex:none;width:24px;height:24px;aspect-ratio:1}
    .container{width:min(var(--page),calc(100% - 64px));margin-inline:auto}
    .svg-library{position:absolute;width:0;height:0;overflow:hidden}
    .skip-link{position:fixed;top:10px;left:16px;z-index:100;padding:10px 18px;background:var(--surface-warm);transform:translateY(-160%)}
    .skip-link:focus{transform:none}
    .site-header{position:fixed;inset:0 0 auto;z-index:30;height:70px;border-bottom:1px solid var(--line);background:var(--surface-warm);backdrop-filter:none;-webkit-backdrop-filter:none;}
    .header-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand-logo{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:22px;font-weight:800;letter-spacing:-.8px;white-space:nowrap}
    .brand-logo svg{width:40px;height:40px}
    .main-navigation{display:flex;align-items:center;gap:32px;height:100%;font-size:14px;font-weight:650}
    .main-navigation a{position:relative;display:flex;align-items:center;min-height:44px}
    .main-navigation [aria-current="page"]{color:var(--orange-ink)}
    .main-navigation [aria-current="page"]::after{content:"";position:absolute;bottom:0;left:calc(50% - 9px);width:18px;height:3px;border-radius:3px;background:var(--orange)}
    .main-navigation a:hover,.footer-links-grid a:hover,.brand-logo:hover span{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:6px}
    .menu-toggle{display:none;place-items:center;width:44px;height:44px;border-radius:12px;background:rgba(var(--orange-tint-rgb),0.0520)}
    .menu-toggle:hover{background:rgba(var(--orange-tint-rgb),0.0975)}
    .download-section{position:relative;isolation:isolate;padding:36px 0 80px;overflow:hidden}
    
    
    .page-topline{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px}
    .breadcrumb{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--muted)}
    .breadcrumb a{display:inline-flex;align-items:center;min-height:44px}
    .breadcrumb a:hover{color:var(--orange-ink);text-decoration:underline;text-decoration-color:var(--orange)}
    .breadcrumb svg{width:12px;height:12px;color:var(--orange)}
    .intro{text-align:center;max-width:860px;margin:34px auto 32px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:5px 13px;border:1px solid rgba(var(--orange-tint-rgb),0.1300);border-radius:99px;color:var(--orange-ink);background:rgba(var(--orange-tint-rgb),0.0390);font-size:12px;font-weight:700;letter-spacing:1.5px}
    .eyebrow::before{content:"";width:6px;height:6px;background:var(--orange);border-radius:50%;box-shadow:0 0 0 4px rgba(var(--orange-tint-rgb),0.0520)}
    .section-title{margin-top:22px;font-size:clamp(30px,4.1vw,48px);font-weight:850;letter-spacing:-1.8px;line-height:1.35}
    .title-mark{color:var(--heading-emphasis)}
    .section-subtitle{max-width:700px;margin:18px auto 0;color:var(--ink);font-size:15px;line-height:1.9}
    .hero-download-cta{width:min(100%,340px);margin:24px auto 0;min-height:60px;font-size:16px}
    .platform-jump{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:25px 0 0}
    .platform-jump a{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;padding:8px 15px;border:1px solid rgba(var(--orange-tint-rgb),0.1040);border-radius:11px;background:rgba(var(--surface-warm-rgb),0.5);font-size:12px;transition:background .2s,border-color .2s}
    .platform-jump svg{width:17px;height:17px;color:var(--orange)}
    .platform-jump a:hover{background:rgba(var(--orange-tint-rgb),0.0845);border-color:var(--orange)}
    .device-status{display:flex;align-items:center;justify-content:center;gap:9px;min-height:52px;margin:19px auto 0;color:var(--muted);font-size:12px;line-height:1.7}
    .device-status svg{width:17px;height:17px;color:var(--orange)}
    .download-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
    .platform-card{--glow:rgba(var(--orange-tint-rgb),0.1300);position:relative;display:grid;grid-row:span 5;grid-template-rows:subgrid;row-gap:20px;aspect-ratio:1.03;min-width:0;padding:30px;border:1px solid var(--line);border-radius:24px;background:var(--surface-warm);box-shadow:var(--shadow);transition:all .3s cubic-bezier(.4,0,.2,1);scroll-margin-top:96px}
    .platform-card.blue-card{--glow:rgba(var(--blue-rgb),0.1260);background:var(--surface-warm);border:1px solid var(--line);box-shadow:var(--shadow);}
    .platform-card:hover{transform:translateY(-4px);box-shadow:0 22px 46px -20px var(--glow)}
    .platform-card[data-recommended="true"]{outline:2px solid var(--orange);outline-offset:3px;box-shadow:0 18px 38px -22px rgba(var(--orange-tint-rgb),0.2275)}
    .device-badge{position:absolute;right:22px;top:18px;display:inline-flex;align-items:center;justify-content:center;width:92px;height:26px;visibility:hidden;border-radius:99px;background:rgba(var(--orange-tint-rgb),0.0780);color:var(--orange-ink);font-size:10px;font-weight:750;letter-spacing:.5px}
    [data-recommended="true"] .device-badge{visibility:visible}
    .card-heading{display:flex;align-items:center;gap:17px;min-height:86px;padding-top:5px}
    .platform-icon{display:grid;place-items:center;flex:none;width:64px;height:64px;aspect-ratio:1;border-radius:19px;border:1px solid rgba(var(--orange-tint-rgb),0.1040);background:#FFF1E9;}
    .platform-icon svg{width:34px;height:34px}
    .blue-card .platform-icon{border-color:rgba(var(--blue-rgb),0.0980);background:#EDF4FF;}
    .card-title-group{min-width:0;flex:1}
    .card-heading h3{font-size:25px;line-height:1.4;letter-spacing:-.6px;font-weight:800}
    .version-tag{display:inline-block;margin-top:6px;color:var(--orange-ink);font-size:11px;font-weight:650;letter-spacing:.3px}
    .blue-card .version-tag{color:var(--blue-ink)}
    .card-description{font-size:14px;line-height:1.9;color:var(--ink)}
    .package-specs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;padding:15px 0;border-block:1px solid rgba(var(--orange-tint-rgb),0.0845)}
    .package-specs dt{margin-bottom:3px;font-size:10px;color:var(--muted);letter-spacing:.7px}
    .package-specs dd{font-size:12px;font-weight:700;line-height:1.65}
    .capability-list{display:grid;gap:10px;align-content:start;margin:0;padding:0;list-style:none;font-size:13px;line-height:1.9}
    .capability-list li{position:relative;padding-left:16px}
    .capability-list li::before{content:"";position:absolute;left:0;top:.75em;width:5px;height:5px;border-radius:50%;background:var(--orange)}
    .capability-list strong{font-weight:750}
    .card-download{align-self:end}
    .download-button{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;gap:9px;min-height:56px;padding:13px 16px;border-radius:13px;background:var(--download-bg);color:var(--download-fg);font-size:14px;font-weight:800;box-shadow:0 8px 22px rgba(var(--orange-tint-rgb),0.1040);transition:background .2s,transform .2s}
    .download-button svg{width:20px;height:20px}
    .download-button:hover{background:var(--download-hover);transform:translateY(-1px);color:var(--download-fg);}
    .download-button.blue-button{background:var(--blue);color:var(--download-fg);box-shadow:0 8px 22px rgba(var(--blue-rgb),0.1120)}
    .download-button.blue-button:hover{background:var(--blue-ink);box-shadow:0 0 0 3px rgba(var(--orange-tint-rgb),0.1170),0 10px 24px rgba(var(--blue-rgb),0.1400);color:var(--download-fg);}
    [data-recommended="true"] .download-button::before{content:"";position:absolute;z-index:-1;inset:0;border-radius:inherit;box-shadow:0 0 0 5px rgba(var(--orange-tint-rgb),0.0650),0 10px 30px rgba(var(--orange-tint-rgb),0.1495);animation:button-glow 3s ease-in-out infinite}
    .button-note{min-height:38px;margin-top:9px;color:var(--muted);font-size:11px;line-height:1.7}
    
    
    
    .linux-entry{position:relative;display:flex;align-items:center;gap:18px;margin-top:26px;padding:23px 26px;border:1px solid rgba(var(--orange-tint-rgb),0.1300);border-radius:19px;background:var(--surface-cool);scroll-margin-top:96px;border-color:var(--line);box-shadow:none;}
    .linux-entry[data-recommended="true"]{outline:2px solid var(--orange);outline-offset:3px}
    .linux-icon{display:grid;place-items:center;flex:none;width:48px;height:48px;aspect-ratio:1;border-radius:14px;background:rgba(var(--orange-tint-rgb),0.0650);color:var(--orange)}
    .linux-copy{flex:1;min-width:0}
    .linux-copy strong{font-size:16px}
    .linux-copy p{margin-top:5px;font-size:12px;line-height:1.9;color:var(--ink)}
    .linux-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:none;min-height:44px;padding:9px 15px;border:1px solid rgba(var(--orange-tint-rgb),0.1950);border-radius:10px;font-size:12px;font-weight:700;background:var(--download-bg);color:var(--download-fg);}
    .linux-link:hover{background:var(--download-hover);border-color:var(--orange);color:var(--download-fg);}
    .linux-link svg{width:16px;height:16px;color:var(--orange)}
    .installation-guide{margin-top:37px;padding:28px 30px;border:1px solid rgba(var(--orange-tint-rgb),0.0845);border-radius:19px;background:var(--surface-cool);border-color:var(--line);box-shadow:none;}
    .installation-guide h3{font-size:18px;letter-spacing:-.3px;line-height:1.6}
    .guide-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:25px;margin-top:18px}
    .guide-grid p{font-size:12px;line-height:1.95;color:var(--ink)}
    .guide-grid strong{display:block;margin-bottom:5px;font-size:13px}
    .guide-footnote{margin-top:18px;padding-top:15px;border-top:1px solid rgba(var(--orange-tint-rgb),0.0780);font-size:11px;line-height:1.9;color:var(--muted)}
    .guide-footnote a{text-decoration:underline;text-decoration-color:currentColor;text-underline-offset:4px;color:var(--blue);}
    .guide-footnote a:hover{background:rgba(var(--orange-tint-rgb),0.0650)}
    .site-footer{position:relative;padding:45px 0 23px;border-top:1px solid var(--line);background:#EDF2F7;}
    .site-footer::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--orange);}
    .footer-top{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;padding-bottom:28px}
    .footer-brand p{margin-top:11px;font-size:12px;line-height:1.9;color:var(--muted)}
    .footer-links-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
    .footer-links-grid h3{margin-bottom:9px;font-size:13px;color:var(--orange-ink)}
    .footer-links-grid a{display:flex;align-items:center;min-height:40px;font-size:12px;color:var(--muted)}
    
    
    
    .footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 22px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:10px;align-items:center;}
    
    @keyframes button-glow{0%,100%{opacity:.3}50%{opacity:1}}
    @media(min-width:1500px){.download-section{padding-top:44px}.intro{margin-top:45px;margin-bottom:40px}}
    @media(max-width:1000px){.main-navigation{gap:22px}.platform-card{padding:25px;row-gap:18px}.card-heading{gap:13px}.card-heading h3{font-size:22px}.platform-icon{width:56px;height:56px}.platform-icon svg{width:31px;height:31px}.download-button{font-size:13px}.package-specs{gap:8px}.footer-top{gap:35px}.guide-grid{gap:20px}}
    @media(max-width:760px){.container{width:calc(100% - 40px)}.brand-logo{font-size:20px}.brand-logo svg{width:36px;height:36px}.menu-toggle{display:grid}.main-navigation{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;height:auto;padding:16px 20px 22px;gap:4px;background:var(--surface-warm);border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(var(--orange-tint-rgb),0.0585)}.main-navigation.is-open{display:flex}.main-navigation a{min-height:46px;padding:8px 14px}.main-navigation [aria-current="page"]::after{left:auto;right:14px;bottom:20px}.download-section{padding:22px 0 48px}.intro{margin:28px auto 24px}.section-title{font-size:clamp(28px,6.8vw,40px);letter-spacing:-1px;margin-top:20px}.section-subtitle{font-size:14px;margin-top:15px}.platform-jump{gap:7px;margin-top:20px}.platform-jump a{padding:7px 11px;font-size:11px}.device-status{min-height:68px;max-width:32em;align-items:center}.download-grid{grid-template-columns:1fr;gap:20px}.platform-card{padding:26px;row-gap:18px;aspect-ratio:1}.card-heading h3{font-size:24px}.platform-icon{width:60px;height:60px}.platform-icon svg{width:33px;height:33px}.card-description{font-size:14px}.download-button{font-size:14px}.button-note{min-height:38px}.linux-entry{flex-wrap:wrap;padding:24px;gap:13px}.linux-copy{flex-basis:calc(100% - 65px)}.linux-link{margin-left:61px}.guide-grid{grid-template-columns:1fr;gap:18px}.installation-guide{padding:25px;margin-top:26px}.footer-top{grid-template-columns:1fr;gap:28px}.footer-links-grid{gap:18px}}
    @media(max-width:380px){.container{width:calc(100% - 32px)}.breadcrumb{font-size:11px;gap:6px}.section-title{font-size:28px}.eyebrow{font-size:10px;letter-spacing:1px}.platform-card{padding:22px;row-gap:17px}.card-heading{gap:11px;min-height:91px;padding-top:11px}.card-heading h3{font-size:21px}.platform-icon{width:49px;height:49px;border-radius:15px}.platform-icon svg{width:28px;height:28px}.device-badge{right:16px;top:12px;width:85px;height:24px;font-size:9px}.version-tag{font-size:10px}.package-specs{gap:6px}.package-specs dd{font-size:11px}.download-button{font-size:12px;gap:7px;padding-inline:9px}.download-button svg{width:18px;height:18px}.capability-list{font-size:12px}.linux-entry{padding:20px}.linux-link{margin-left:0;width:100%}.installation-guide{padding:22px}.footer-links-grid{gap:12px}.footer-links-grid a,.footer-links-grid h3{font-size:11px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
    @media print{body{padding-top:0;background:var(--surface-warm)}.site-header{position:static}.menu-toggle{display:none}.platform-card{break-inside:avoid;box-shadow:none}}
  
    a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
    .main-navigation [aria-current="page"]{color:var(--ink);font-weight:800}