:root{--brand:#FF4D00;--ink:#1F2937;--sub:#5B6573;--muted:#8B95A5;--line:#E8EDF3;--blue:#F4F8FD}
*{box-sizing:border-box}html,body{margin:0}body{background:var(--blue);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",sans-serif}a{color:inherit;text-decoration:none}
.site-header{background:#fff;border-bottom:1px solid rgba(31,41,55,.06)}
.header-inner{max-width:1100px;margin:0 auto;padding:0 24px;height:60px;display:flex;align-items:center;gap:32px}
.site-logo{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;white-space:nowrap}.site-logo img{width:30px;height:30px}.site-logo span{color:var(--brand)}.site-logo small{font-size:8.5px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:2px 4px;font-weight:600}
.site-nav{display:flex;gap:24px;font-size:12px;color:var(--sub)}.site-nav a:hover{color:var(--brand)}.site-nav a:nth-child(2){color:var(--ink)}
.header-user{margin-left:auto;display:flex;align-items:center;gap:12px}.header-login{font-size:12px;color:var(--sub)}.avatar{width:28px;height:28px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:700}
.download-page{max-width:1100px;margin:0 auto;padding:0 24px 50px}
.download-hero{display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:center;padding:64px 0 38px}
.eyebrow{font-size:9px;letter-spacing:2.2px;color:var(--brand);font-weight:700;margin:0 0 10px}
.download-copy h1{font-size:43px;line-height:1.16;letter-spacing:-1.8px;margin:0}
.lead{color:var(--sub);font-size:13px;line-height:1.8;margin:14px 0 22px;max-width:390px}
.download-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.download-btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:10px;background:var(--brand);color:#fff;font-size:12px;font-weight:700;box-shadow:0 10px 22px rgba(255,77,0,.2)}
.download-btn:hover{background:#E94500}.download-btn[aria-disabled=true]{opacity:.55;pointer-events:none}
.download-meta{font-size:10.5px;color:var(--muted)}.download-note{margin:12px 0 0;color:#98A2B3;font-size:9.5px}
.window-mock{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 20px 45px rgba(31,41,55,.1)}
.mock-bar{height:30px;background:#F8FAFD;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:5px;padding:0 10px;color:var(--muted);font-size:9px}.mock-bar i{width:6px;height:6px;border-radius:50%;background:#D9E0E9}.mock-bar i:first-child{background:#FFB3A0}.mock-bar span{margin-left:8px}
.mock-body{display:grid;grid-template-columns:92px 1fr;min-height:230px}.mock-side{background:#FAFBFD;border-right:1px solid var(--line);padding:13px 9px;display:flex;flex-direction:column;gap:9px}.mock-side b{font-size:8px;margin-bottom:7px;color:var(--ink)}.mock-side span{font-size:8px;color:#9AA4B2}.mock-side span:nth-child(2){color:var(--brand)}
.mock-main{padding:23px 17px}.mock-line{height:8px;background:#EEF2F7;border-radius:5px;margin-bottom:9px}.w70{width:70%}.w90{width:90%}.w60{width:60%}.mock-card{height:78px;border:1px solid var(--line);border-radius:8px;background:linear-gradient(135deg,#FFF7F2,#F7FAFF);margin:17px 0 14px}
.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.download-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:21px}.download-card h2{margin:0 0 11px;font-size:15px}.download-card ul{margin:0;padding-left:17px;color:var(--sub);font-size:11.5px;line-height:2}.changelog li{margin-bottom:4px}
.site-footer{border-top:1px solid rgba(31,41,55,.06);background:#fff}.footer-inner{max-width:1100px;margin:0 auto;padding:17px 24px;display:flex;justify-content:space-between;gap:10px;font-size:10px;color:var(--muted);flex-wrap:wrap}.footer-inner a{margin-left:13px}
@media(max-width:820px){.download-hero{grid-template-columns:1fr;padding:38px 0 28px}.window-mock{max-width:450px}.download-copy h1{font-size:34px}.download-grid{grid-template-columns:1fr}}
@media(max-width:620px){.header-inner{padding:0 15px;gap:14px}.site-nav{display:none}.download-page{padding:0 15px 35px}.download-copy h1{font-size:30px}}