:root{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#182d43;background:#f5f8fb;font-synthesis:none;--muted:#607487;--blue:#2468d8;--line:#dce5ee}
*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 83% 16%,#e6f2f9 0,transparent 45%),#f5f8fb}a{color:inherit;text-decoration:none}button{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible{outline:3px solid #2386bb;outline-offset:5px}.icon-library{position:absolute;width:0;height:0;overflow:hidden}.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.page-shell{width:min(1120px,calc(100% - 80px));margin:auto}.header{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #dce5ee90}.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;letter-spacing:-.6px}.brand-mark{display:grid;place-items:center;width:34px;height:34px;color:#fff;background:#2468d8;border-radius:10px}.brand-mark .icon{width:21px;height:21px}.console-link{display:flex;align-items:center;gap:9px;font-size:14px;color:#4d657b}.console-link:hover,footer a:hover{color:var(--blue)}.console-link .icon{width:17px;height:17px}.hero{display:grid;grid-template-columns:1fr 1.12fr;align-items:center;padding:40px 0 27px;min-height:310px;gap:20px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:#5a7f9a;margin:0 0 17px;display:flex;align-items:center;gap:8px}.eyebrow>span{width:6px;height:6px;border-radius:50%;background:#27a0ae}h1{font-size:48px;line-height:1.23;letter-spacing:-1.8px;margin:0 0 16px;font-weight:700}.hero-description{font-size:15px;line-height:1.85;color:var(--muted);margin:0}.hero-note{display:flex;align-items:center;gap:9px;margin-top:21px;color:#597486;font-size:12px}.note-line{height:1px;width:22px;background:#65a4b5}.hero-art{position:relative;background-image:radial-gradient(#a0bdcf60 .8px,transparent .8px);background-size:18px 18px;mask-image:linear-gradient(to right,transparent,#000 12%,#000 88%,transparent);text-align:center}.hero-art svg{display:block;width:100%;height:auto}.art-caption{font-size:10px;color:#7893a5;letter-spacing:3px;display:block;margin-top:-6px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;margin:12px 0 18px;gap:18px}.section-heading .eyebrow{margin-bottom:7px;font-size:9px}h2{font-size:21px;letter-spacing:-.4px;margin:0;font-weight:650}.device-note{font-size:12px;color:var(--muted);margin:0 0 3px;text-align:right;line-height:1.6}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.download-card{border:1px solid var(--line);border-radius:17px;background:#fff;padding:24px 27px;box-shadow:0 7px 24px #213d5610}.primary-card{background:linear-gradient(125deg,#fff 24%,#edf6fe);border-color:#bed3eb}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.platform-icon{width:39px;height:39px;background:#e7f0fb;color:#2d6cd7;border-radius:11px;display:grid;place-items:center}.windows-icon{fill:currentColor;stroke:none;width:19px;height:19px}.quick-card .platform-icon{color:#278b94;background:#e8f4f4}.badge{font-size:11px;color:#2865a5;background:#e6f0fc;border-radius:5px;padding:5px 8px}.card-label{font-size:11px;color:#7b8c9a}.download-card h3{font-size:20px;letter-spacing:-.4px;margin:0 0 9px;font-weight:650}.download-card>p{font-size:13px;line-height:1.65;color:var(--muted);margin:0 0 24px}.card-footer{display:flex;align-items:center;justify-content:space-between;gap:12px}.download-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:13px;font-weight:600;background:var(--blue);color:#fff;padding:12px 16px;border-radius:8px;transition:background .15s,transform .15s}.download-button:hover{background:#1857bc;transform:translateY(-1px)}.download-button .icon{width:16px;height:16px}.download-button.secondary{background:#eef3f8;color:#335776;border:1px solid #d6e1eb;padding:11px 15px}.download-button.secondary:hover{background:#e1edf5}.file-meta{font-size:10px;white-space:nowrap;color:#8798a6;letter-spacing:.3px}.other-platforms{margin-top:26px;padding:23px 26px 17px;border:1px solid var(--line);border-radius:15px;background:#ffffff70}.other-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.other-heading h2{font-size:16px}.other-heading p{font-size:12px;color:var(--muted);margin:7px 0 0}.tabs{display:flex;gap:3px;border-radius:8px;background:#e9eff5;padding:3px}.tabs button{border:0;border-radius:6px;padding:7px 17px;font-size:12px;color:#678094;background:transparent;cursor:pointer}.tabs button[aria-selected=true]{background:#fff;color:#284765;box-shadow:0 1px 4px #274e6510}.platform-options{display:grid;grid-template-columns:1fr 1fr;gap:24px}.platform-options[hidden]{display:none}.platform-option{display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding-top:16px}.platform-option h3{font-size:13px;margin:0 0 5px;font-weight:600}.platform-option p{font-size:11px;color:#7d91a1;margin:0}.unavailable{font-size:11px;padding:7px 12px;border:1px solid #dce5ee;border-radius:6px;color:#8295a5;background:#f2f6f9;white-space:nowrap;cursor:not-allowed}.platform-option.detected h3::after{content:"当前设备";font-weight:400;font-size:9px;color:#277480;margin-left:8px}.platform-note{font-size:10px;color:#8799a8;margin:17px 0 0;line-height:1.7}footer{display:flex;align-items:center;justify-content:space-between;padding:25px 1px 29px;font-size:11px;color:#8a9ba9}footer>span:first-child{font-weight:600;letter-spacing:.4px}footer a{color:#587288;margin-left:6px}
@media(min-width:1400px){.page-shell{width:1120px}.hero{padding-top:48px;padding-bottom:32px}}
@media(max-width:900px){.page-shell{width:calc(100% - 48px)}h1{font-size:40px}.hero{min-height:280px;grid-template-columns:1fr 1fr}.hero-description{font-size:13px}.download-card{padding:21px}.download-card h3{font-size:18px}.card-footer{align-items:flex-start;flex-direction:column;gap:10px}.file-meta{padding-left:2px}.platform-options{gap:20px}}
@media(max-width:620px){.page-shell{width:calc(100% - 36px)}.header{height:72px}.brand{font-size:18px}.brand-mark{width:31px;height:31px}.console-link{font-size:12px;gap:5px}.hero{grid-template-columns:1fr;padding:32px 0 24px;gap:15px}.hero-copy{position:relative;z-index:1}h1{font-size:39px;line-height:1.25}.hero-description{font-size:14px}.hero-note{margin-top:16px}.hero-art{max-width:330px;width:90%;margin:-10px auto 0}.hero-art .art-caption{display:none}.section-heading{display:block;margin:2px 0 16px}.device-note{text-align:left;margin-top:9px}h2{font-size:19px}.download-grid{grid-template-columns:1fr;gap:14px}.download-card{padding:21px}.download-card h3{font-size:19px}.card-top{margin-bottom:15px}.download-card>p{margin-bottom:20px}.card-footer{flex-direction:row;align-items:center}.other-platforms{margin-top:20px;padding:20px 19px 15px}.other-heading{align-items:flex-start;gap:10px}.other-heading p{max-width:135px;line-height:1.6}.tabs button{padding:7px 12px}.platform-options{grid-template-columns:1fr;gap:16px}.platform-option{padding-top:15px}.platform-note{font-size:11px;margin-top:16px}footer{gap:14px;align-items:flex-start;font-size:10px;padding-top:22px}}
@media(max-width:420px){.card-footer{flex-wrap:wrap}.file-meta{font-size:10px}.console-link .icon{display:none}}
.device-recommendation{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:19px 23px;border:1px solid #bed3eb;border-radius:13px;background:#edf5fc;margin-bottom:23px}.recommendation-label{font-size:10px;color:#638097;margin:0 0 6px;letter-spacing:1px}.device-recommendation #device-note{font-size:14px;line-height:1.6;color:#284765;margin:0}.device-recommendation [hidden]{display:none}.windows-heading{font-size:14px;color:#4d657b;font-weight:600;margin:0 0 12px}.package-actions{display:flex;flex-direction:column;align-items:center;gap:7px}.package-button{display:inline-flex;justify-content:center;align-items:center;gap:7px;padding:9px 12px;border:1px solid #cedeea;background:#eef5fb;color:#2e5a81;font-size:12px;font-weight:600;border-radius:7px;white-space:nowrap}.package-button:hover{background:#dfedf8;border-color:#a8c6de}.package-button span{font-size:10px;font-weight:400;color:#607f96}.linux-option{display:block}.linux-packages{display:flex;gap:11px;margin-top:14px}.linux-packages .package-actions{flex:1}.linux-packages .package-button{width:100%;flex-direction:column;gap:3px}.platform-option.detected{border-top-color:#8fb5d6}
@media(max-width:620px){.device-recommendation{align-items:flex-start;flex-direction:column;gap:13px;padding:17px 19px}.device-recommendation #device-note{font-size:13px}.device-recommendation .download-button{font-size:12px;max-width:100%}.platform-option h3{line-height:1.6}.platform-option.detected h3::after{display:inline-block}.linux-packages{gap:10px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}
.mobile-download{display:flex;align-items:center;justify-content:space-between;gap:26px;margin-top:20px;padding:24px 26px;border:1px solid var(--line);border-radius:15px;background:#ffffff70}.mobile-download .eyebrow{margin-bottom:9px;font-size:9px}.mobile-download h2{font-size:17px}.mobile-description{font-size:12px;line-height:1.8;color:var(--muted);margin:10px 0 0}.mobile-limit{font-size:12px;line-height:1.8;color:#37617d;margin:5px 0 0;font-weight:600}.mobile-download .download-button{flex-shrink:0}
@media(max-width:620px){.mobile-download{align-items:flex-start;flex-direction:column;gap:16px;padding:20px 19px}.mobile-description,.mobile-limit{font-size:12px}}

/* 当前系统与手动选择分别保留自己的版本。 */
[hidden]{display:none!important}
.device-status{margin:0 0 15px;color:#607487;font-size:13px;line-height:1.7}
.device-status p{margin:0}
.platform-selector{padding:25px 27px;border:1px solid var(--line);border-radius:16px;background:#ffffffb8}
.current-platform{border-color:#bed3eb;background:linear-gradient(125deg,#fff 24%,#edf6fe);box-shadow:0 7px 24px #213d5610}
.selector-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}
.selector-heading .eyebrow{font-size:9px;margin-bottom:8px}
.selector-heading h3{font-size:22px;margin:0;letter-spacing:-.4px}
.selector-description{font-size:13px;line-height:1.8;color:var(--muted);margin:11px 0 19px}
.selector-heading .selector-description{margin-bottom:0}
.selection-fields{display:flex;gap:18px;flex-wrap:wrap;margin-top:19px}
.selection-field{width:100%;min-width:0}.field-label{font-size:12px;color:#4d657b;margin:0 0 10px}
.choice-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
#other-system .choice-cards{grid-template-columns:repeat(5,minmax(0,1fr))}
.choice-card{position:relative;text-align:left;min-height:66px;padding:18px 40px 18px 17px;border:1px solid #c8d8e6;border-radius:10px;background:#fff;color:#284765;font-size:14px;line-height:1.6;cursor:pointer;transition:border-color .15s,background .15s}
.choice-card:hover{border-color:#83a9d7;background:#f5f9ff}.choice-card[aria-checked=true]{border-color:#2468d8;background:#edf5ff;color:#174c9c;box-shadow:inset 0 0 0 1px #2468d8;font-weight:600}
.choice-card[aria-checked=true]::after{content:'✓';position:absolute;right:16px;top:50%;transform:translateY(-50%);color:#2468d8;font-size:18px}
.choice-reset{display:block;margin-top:10px;padding:3px 0;border:0;background:transparent;color:#607487;font-size:12px;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.choice-mobile{display:none;position:relative}.choice-trigger{position:relative;width:100%;min-height:46px;text-align:left;padding:11px 38px 11px 13px;border:1px solid #c8d8e6;border-radius:9px;background:#fff;color:#284765;font-size:14px;line-height:1.6;cursor:pointer}
.choice-trigger::after{content:'';position:absolute;right:16px;top:17px;width:8px;height:8px;border-right:2px solid #607487;border-bottom:2px solid #607487;transform:rotate(45deg)}
.choice-trigger[aria-expanded=true]{border-color:#2468d8}.choice-trigger[aria-expanded=true]::after{top:21px;transform:rotate(225deg)}
.choice-list{position:absolute;top:calc(100% + 7px);left:0;right:0;z-index:5;padding:6px;border:1px solid #c8d8e6;border-radius:10px;background:#fff;box-shadow:0 10px 30px #213d5624;max-height:280px;overflow:auto}
.choice-option{display:block;width:100%;min-height:44px;text-align:left;padding:10px 12px;border:0;border-radius:6px;background:#fff;color:#284765;font-size:14px;line-height:1.6;cursor:pointer}.choice-option:hover,.choice-option:focus-visible{background:#f1f6fc}.choice-option:focus-visible{outline:2px solid #2386bb;outline-offset:-2px}.choice-option[aria-selected=true]{background:#edf5ff;color:#174c9c;font-weight:600}
summary:focus-visible{outline:3px solid #2386bb;outline-offset:4px}
#other-system .choice-card{gap:9px;padding:15px 29px 15px 12px;font-size:13px}#other-system .choice-card .choice-art{width:32px;height:32px;flex-basis:32px}#other-system .choice-card[aria-checked=true]::after{right:10px}
.choice-card,.choice-trigger,.choice-option,.choice-reset{display:flex;align-items:center;gap:12px}.choice-text{min-width:0}.choice-art{width:38px;height:38px;flex:0 0 38px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;border-radius:10px;background:#edf3fa;color:#527594;transition:background .15s,color .15s}.choice-art .icon{width:21px;height:21px}.choice-art use[href="#windows"]{fill:currentColor;stroke:none}.choice-arch{font-size:8px;line-height:1;font-weight:700;letter-spacing:.4px}.choice-card[aria-checked=true] .choice-art,.choice-option[aria-selected=true] .choice-art{background:#dceaff;color:#2468d8}.choice-trigger .choice-art,.choice-option .choice-art{width:30px;height:30px;flex-basis:30px;border-radius:8px}.choice-trigger .choice-art .icon,.choice-option .choice-art .icon{width:18px;height:18px}.choice-trigger .choice-arch,.choice-option .choice-arch{font-size:7px}.choice-reset{gap:5px}.choice-reset .choice-art{width:15px;height:15px;flex-basis:15px;background:transparent}.choice-reset .choice-art .icon{width:14px;height:14px}.current-system-heading{display:flex;align-items:center;gap:11px}.current-system-heading>span{display:grid;place-items:center;width:40px;height:40px;background:#e2edfb;color:#2468d8;border-radius:11px}.current-icon{width:25px;height:25px}.current-icon use[href="#windows"]{fill:currentColor;stroke:none}
.download-result{display:flex;align-items:center;gap:15px;margin-top:20px}
.platform-selector .platform-note{font-size:12px;line-height:1.8;margin-top:15px;max-width:660px}
.platform-note.mobile-limit{color:#37617d;font-weight:600}
.other-platforms{margin-top:22px}
.manual-downloads{margin-top:22px}.manual-downloads details{border-top:1px solid var(--line);padding:14px 0}.manual-downloads summary{cursor:pointer;font-size:14px}.manual-links{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.manual-links a{color:var(--blue);font-size:13px;text-decoration:underline}
@media(max-width:900px){#other-system .choice-cards{grid-template-columns:repeat(3,minmax(0,1fr))}}
.brand-logo{display:block;width:40px;height:40px;object-fit:contain;flex-shrink:0}
@media(max-width:620px){.brand-logo{width:36px;height:36px}}
@media(max-width:620px){.platform-selector{padding:21px 19px}.selector-heading h3{font-size:20px}.selection-fields{gap:15px}.choice-cards,.choice-reset{display:none}.choice-mobile{display:block}.download-result{align-items:flex-start;flex-direction:column;gap:10px}.selector-description{font-size:12px}.selector-heading{align-items:flex-start}.badge{white-space:nowrap}}