:root{--ink:#171619;--muted:#6f6a70;--paper:#fffdfb;--warm:#f6f1eb;--line:#e6dfd8;--violet:#7047eb;--orange:#f3942f;--green:#28ad79;--night:#101018;--shadow:0 28px 75px rgba(42,30,55,.14)}
*{box-sizing:border-box}body{margin:0;color:var(--ink);background:radial-gradient(circle at 86% 5%,rgba(112,71,235,.12),transparent 28%),var(--warm);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit}.download-header{position:sticky;z-index:20;top:0;border-bottom:1px solid rgba(23,22,25,.08);background:rgba(255,253,251,.88);backdrop-filter:blur(18px)}.download-nav{display:flex;align-items:center;justify-content:space-between;width:min(1160px,calc(100% - 48px));height:76px;margin:auto}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-size:19px;font-weight:800;text-decoration:none}.brand img{border-radius:11px;box-shadow:0 7px 20px rgba(47,25,104,.2)}.nav-actions,.language-picker,.download-footer,.download-footer div{display:flex;align-items:center}.nav-actions{gap:16px}.home-link{color:#5e585f;font-size:14px;font-weight:750;text-decoration:none}.language-picker{padding:3px;border:1px solid var(--line);border-radius:11px;background:#fff}.language-picker button{width:34px;height:29px;padding:0;border:0;border-radius:8px;color:#8a858b;background:transparent;cursor:pointer;font-size:11px;font-weight:800}.language-picker button[aria-pressed=true]{color:#fff;background:var(--ink)}.download-shell{width:min(1160px,calc(100% - 48px));margin:0 auto 100px}.download-page{display:none}.download-page.active{display:block}.hero-copy{max-width:820px;padding:92px 0 52px}.eyebrow{margin:0 0 16px;color:#4e28bd;font-size:12px;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.hero-copy h1{margin:0;font-size:clamp(48px,7vw,78px);line-height:1;letter-spacing:-.055em}.lead{max-width:760px;margin:24px 0 0;color:#5e585f;font-size:20px;line-height:1.6}.firmware-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.firmware-card{overflow:hidden;border:1px solid rgba(230,223,216,.9);border-radius:30px;background:#fff;box-shadow:var(--shadow)}.card-image{position:relative;padding:12px;background:#11131a}.card-image img{display:block;width:100%;border-radius:19px}.card-image span{position:absolute;top:26px;right:26px;padding:7px 11px;border-radius:99px;color:#fff;background:var(--green);font-size:10px;font-weight:850;letter-spacing:.06em;text-transform:uppercase}.card-copy{padding:31px 32px 34px}.board-family{margin:0;color:#7047eb;font-size:11px;font-weight:850;letter-spacing:.1em;text-transform:uppercase}.card-copy h2{margin:10px 0 13px;font-size:29px;line-height:1.12;letter-spacing:-.035em}.card-copy>p:not(.board-family):not(.file-note){min-height:52px;color:var(--muted);font-size:15px;line-height:1.55}.download-button{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:26px;padding:17px 19px;border-radius:15px;color:#fff;background:linear-gradient(135deg,#6e3ce8,#8d5af2);box-shadow:0 15px 30px rgba(105,59,222,.23);font-size:15px;font-weight:780;text-decoration:none}.download-button:hover{transform:translateY(-1px)}.download-button b{font-size:20px}.file-note{margin:10px 3px 0;color:#999198;font-size:11px}.guide{margin-top:80px;padding:54px;border-radius:32px;color:#fff;background:radial-gradient(circle at 95% 5%,rgba(130,78,244,.38),transparent 35%),linear-gradient(135deg,#19151f,#25202e)}.guide .eyebrow{color:#b895ff}.guide>h2{max-width:700px;margin:0;font-size:clamp(37px,5vw,56px);line-height:1.05;letter-spacing:-.05em}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:43px}.guide-grid>div{padding-top:20px;border-top:1px solid rgba(255,255,255,.14)}.guide-grid b{display:inline-grid;place-items:center;width:31px;height:31px;border-radius:50%;color:#18131f;background:#fff;font-size:13px}.guide-grid h3{margin:17px 0 9px;font-size:19px}.guide-grid p{margin:0;color:#bbb3c0;font-size:14px;line-height:1.6}.support-note{margin:38px 0 0;color:#c9c1cf;font-size:14px}.support-note a{color:#fff;font-weight:750}.download-footer{justify-content:space-between;gap:24px;padding:30px max(24px,calc((100% - 1160px)/2));color:#958f99;background:#0c0b10;font-size:12px}.download-footer div{gap:22px}.download-footer a{color:#b8b1bc;text-decoration:none}
@media(max-width:760px){.download-nav,.download-shell{width:min(100% - 28px,620px)}.download-nav{height:68px}.home-link{display:none}.language-picker button{width:31px}.hero-copy{padding:60px 0 34px}.lead{font-size:18px}.firmware-grid{grid-template-columns:1fr}.card-copy{padding:25px 23px 28px}.card-copy h2{font-size:27px}.card-copy>p:not(.board-family):not(.file-note){min-height:0;font-size:17px}.download-button{font-size:16px}.guide{margin-top:52px;padding:36px 23px}.guide-grid{grid-template-columns:1fr;gap:22px;margin-top:34px}.guide-grid p,.support-note{font-size:16px}.download-footer{flex-direction:column;text-align:center}}