.download-center{max-width:1100px;margin:32px auto 64px;padding:0 24px;color:#193e50}.download-back,.download-online{color:#18776e}.download-center header{margin:28px 0}.download-center h1{font-size:36px;margin:10px 0}.download-center p,.download-center li{line-height:1.8}.download-card{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(0,1.2fr);gap:32px;padding:28px;background:#fff;border:1px solid #dbe7e5;border-radius:18px}.download-card img{width:100%;border-radius:12px}.download-card h2{font-size:25px;line-height:1.5}.download-badge{color:#137567;font-weight:700}.download-notice{padding:14px;background:#f0f7f4;border-radius:8px;font-size:14px}.download-primary{display:inline-flex;padding:13px 22px;background:#176e63;color:white;border:0;border-radius:8px;font:inherit;font-weight:700;cursor:pointer}.download-online{display:inline-block;margin-top:18px}.download-primary:focus-visible,.download-back:focus-visible,.download-online:focus-visible{outline:3px solid #d39a2c;outline-offset:4px}@media(max-width:650px){.download-center{padding:0 16px}.download-card{grid-template-columns:1fr;padding:18px;gap:12px}.download-card h2{font-size:22px}.download-center h1{font-size:30px}}

.download-terms{margin:18px 0;padding:12px 14px;border:1px solid #c6d8e0;border-radius:8px}.download-terms summary{cursor:pointer;font-weight:600}.download-consent{display:flex;align-items:flex-start;gap:10px;margin:18px 0;line-height:1.7}.download-consent input{width:20px;height:20px;margin-top:4px;flex-shrink:0;accent-color:#176e63}.download-consent a{color:#176e63;text-decoration:underline}.download-error{color:#a12d28}.download-accepted{color:#326558;font-size:14px}.offline-terms-content{line-height:1.8}.download-terms summary:focus-visible,.download-consent input:focus-visible{outline:3px solid #258fbe;outline-offset:3px}

/* 多模型下载列表留出卡片间距，锚点定位保留顶部空间。 */
.download-card{margin-bottom:24px;scroll-margin-top:24px}

/* 联系区独立于下载卡片，二维码保持原图比例与白色留边，手机按纵向排列。 */
.download-contact{display:grid;grid-template-columns:minmax(0,1fr) 204px;align-items:center;gap:28px;margin:24px 0;padding:24px 28px;background:#f1f8f6;border:1px solid #c7dfd7;border-radius:18px}
.download-contact-label{color:#176e63;font-size:14px;font-weight:700;letter-spacing:.04em}
.download-contact h2{margin:8px 0 10px;font-size:25px;line-height:1.4}
.download-contact p{margin:8px 0;font-size:16px}
.download-contact .download-contact-tip{font-size:14px;color:#526e75}
.download-contact-actions{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:12px}
.download-contact-actions a{display:inline-flex;align-items:center;min-height:44px;color:#176e63;text-decoration:underline;text-underline-offset:4px;font-weight:600}
.download-contact-qr{margin:0;padding:12px;background:#fff;border:1px solid #dbe7e5;border-radius:12px;text-align:center}
.download-contact-qr a{display:block}.download-contact-qr img{display:block;width:100%;height:auto}
.download-contact-qr figcaption{margin-top:10px;font-size:14px;font-weight:600;color:#193e50}
.download-contact a:focus-visible{outline:3px solid #d39a2c;outline-offset:4px;border-radius:4px}
@media(max-width:650px){.download-contact{grid-template-columns:minmax(0,1fr);padding:20px;gap:18px}.download-contact h2{font-size:22px}.download-contact-qr{width:204px;max-width:100%;justify-self:center}}

/* 桌面下载目录每行四张卡片；仅作用于目录，不改变使用条款页。 */
.download-catalog{width:calc(100% - 64px);max-width:1800px;padding:0;margin:24px auto 56px}
.download-catalog header{margin:16px 0 18px}
.download-catalog header>p:first-child{margin:0;color:#18776e;font-size:13px;font-weight:700;letter-spacing:.08em}
.download-catalog h1{font-size:32px;margin:5px 0}
.download-catalog header>p:last-child{margin:0;color:#526e75;font-size:15px}
.download-catalog .download-notice{margin:0;padding:12px 16px;border:1px solid #d8e8e0;line-height:1.7}
.download-catalog .download-terms{margin:10px 0 20px;padding:10px 14px;font-size:13px;background:#fff}
.download-list-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:0 0 12px}
.download-list-heading h2{margin:0;font-size:22px}.download-list-heading>span{font-size:13px;color:#607983}
.download-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.download-grid .download-card{display:flex;flex-direction:column;gap:0;padding:0;margin:0;min-width:0;overflow:hidden;border-radius:14px;scroll-margin-top:24px}
.download-grid .download-card>img{display:block;width:100%;height:clamp(150px,11vw,195px);object-fit:contain;border-radius:0;background:#f0f5f5;border-bottom:1px solid #e1eae7}
.download-card-body{display:flex;flex-direction:column;flex:1;padding:16px 18px;min-width:0}
.download-grid .download-badge{font-size:12px}.download-grid .download-card h2{font-size:20px;line-height:1.4;margin:6px 0 8px;overflow-wrap:anywhere}
.download-card-body>p{margin:0 0 12px;font-size:14px;color:#58717c;line-height:1.65}
.download-card-body>form{margin-top:auto}
.download-grid .download-primary{justify-content:center;width:100%;box-sizing:border-box;margin-top:auto;padding:10px 12px;font-size:14px;line-height:1.5;text-decoration:none}
.download-grid form .download-primary{margin-top:0}
.download-grid .download-online{align-self:center;margin-top:10px;font-size:13px;font-weight:600}
.download-grid .download-consent{font-size:12px;gap:7px;margin:8px 0 10px}.download-grid .download-consent input{width:17px;height:17px;margin-top:2px}
.download-grid .download-accepted{font-size:12px;margin:8px 0 10px}
.download-catalog .download-contact{grid-template-columns:minmax(0,1fr) 142px;padding:20px 24px;margin:20px 0 24px;gap:24px}
.download-catalog .download-contact h2{font-size:22px;margin:5px 0 8px}.download-catalog .download-contact p{font-size:14px;margin:5px 0}
.download-catalog .download-contact-qr{padding:8px}.download-catalog .download-contact-qr figcaption{font-size:12px;margin-top:5px}
.download-catalog .download-contact-actions{margin-top:4px}.download-catalog .download-contact-actions a{min-height:32px;font-size:13px}
.download-sections{display:flex;flex-wrap:wrap;gap:12px;margin:0 0 18px}
.download-sections a{display:inline-flex;align-items:center;gap:12px;min-height:44px;padding:8px 16px;border:1px solid #bddbd2;border-radius:10px;background:#fff;color:#176e63;font-weight:700;text-decoration:none}
.download-sections a:hover{background:#eaf6f1}.download-sections a:focus-visible{outline:3px solid #d39a2c;outline-offset:4px}
.download-sections span{font-size:12px;font-weight:500;color:#526e75}
.download-list-heading,.download-blender{scroll-margin-top:24px}
.download-blender{margin-top:36px;padding-top:24px;border-top:1px solid #c7dfd7}
.download-blender-description{margin:0 0 16px;font-size:15px;color:#526e75}
.blender-preview-image{position:relative;display:block;background:#30383c;color:#fff}
.blender-preview-image img{display:block;width:100%;height:auto;aspect-ratio:8/5;object-fit:contain;border-radius:0}
.blender-preview-image span{position:absolute;right:8px;bottom:8px;padding:4px 8px;border-radius:6px;background:#153441e6;font-size:12px}
.blender-preview-image:focus-visible{outline:3px solid #d39a2c;outline-offset:-3px}
.blender-preview-grid h3{margin:6px 0 8px;font-size:20px;line-height:1.4}
#blender-contact{scroll-margin-top:24px}#blender-contact h3{margin:5px 0 8px;font-size:22px;line-height:1.4}
@media(max-width:1000px){.download-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.download-catalog{width:calc(100% - 32px)}.download-grid{grid-template-columns:1fr}.download-list-heading{align-items:flex-start;flex-direction:column;gap:5px}.download-catalog .download-contact{grid-template-columns:1fr}.download-grid .download-card>img{height:180px}}