:root{--ink:#252729;--muted:#65696d;--line:#dfe3e5;--green:#16884a;--green-dark:#0d6837;--yellow:#ffd500;--yellow-soft:#fff8d5;--surface:#fff;--soft:#f5f7f6;--danger:#a7353d;--danger-soft:#fff0f1;--shadow:0 18px 55px rgba(28,42,34,.10)}
*{box-sizing:border-box}html{font-size:16px;scroll-behavior:smooth}body{margin:0;background:linear-gradient(180deg,#f8faf9 0,#fff 32rem);color:var(--ink);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}button,input,select{font:inherit}button,a{touch-action:manipulation}a{color:var(--green-dark);font-weight:700;text-underline-offset:3px}.site-header{width:min(1180px,calc(100% - 40px));height:96px;margin:auto;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;color:var(--ink);text-decoration:none}.brand img{width:56px;height:64px;object-fit:contain}.brand span{border-left:1px solid var(--line);padding-left:14px;display:grid;gap:0;letter-spacing:0;text-transform:none}.brand strong{font-size:1.35rem;line-height:1.15}.brand small{color:var(--muted);font-size:.76rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.support-link{padding:10px 18px;border:1px solid var(--line);border-radius:999px;text-decoration:none;color:var(--ink)}main{width:min(1180px,calc(100% - 40px));margin:auto}.intro{display:grid;grid-template-columns:1.45fr .75fr;gap:52px;align-items:end;padding:72px 0 46px}.eyebrow{color:var(--green);font-weight:800;letter-spacing:.13em;text-transform:uppercase;margin:0 0 12px;font-size:.82rem}.intro h1{font-size:clamp(2.5rem,6vw,5.2rem);line-height:.96;letter-spacing:-.055em;margin:0;max-width:820px}.lead{font-size:clamp(1.08rem,2vw,1.35rem);color:var(--muted);max-width:760px;margin:25px 0 0}.intro-note{background:var(--yellow-soft);border-top:5px solid var(--yellow);padding:25px 28px;border-radius:4px 4px 18px 18px;display:grid;gap:7px}.intro-note strong{font-size:1.08rem}.intro-note span{color:var(--muted)}.download-shell{background:var(--surface);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);margin-bottom:70px;overflow:hidden}.step{display:none;padding:44px 50px}.step.is-active{display:block}.section-heading{display:flex;gap:20px;align-items:flex-start;margin-bottom:34px}.section-heading h2{font-size:clamp(1.55rem,3vw,2.3rem);line-height:1.1;letter-spacing:-.03em;margin:0}.section-heading p:not(.step-number){margin:8px 0 0;color:var(--muted);font-size:1.05rem}.step-number{margin:0;background:var(--yellow);color:#273128;width:48px;height:48px;border-radius:14px;display:grid;place-items:center;font-weight:900;flex:0 0 48px}.choice-grid,.installer-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.choice-card,.installer-card{appearance:none;width:100%;border:1px solid var(--line);background:#fff;border-radius:19px;padding:26px;display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center;text-align:left;color:var(--ink);cursor:pointer;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}.choice-card:hover,.choice-card:focus-visible,.installer-card:not(:disabled):hover,.installer-card:not(:disabled):focus-visible{transform:translateY(-3px);border-color:var(--green);box-shadow:0 12px 28px rgba(22,136,74,.12);outline:none}.choice-icon,.os-mark{width:54px;height:54px;border-radius:16px;background:#e7f5ec;color:var(--green);display:grid;place-items:center;font-size:1.75rem;font-weight:800}.choice-copy,.installer-card>span:nth-child(2){display:grid;gap:5px}.choice-copy strong,.installer-card strong{font-size:1.1rem}.choice-copy small,.installer-card small{color:var(--muted);font-size:.93rem}.choice-arrow,.download-mark{font-size:1.6rem;color:var(--green)}.back-button{border:0;background:none;padding:0;margin:0 0 28px;color:var(--green-dark);font-weight:800;cursor:pointer}fieldset{border:0;padding:0;margin:0 0 38px}legend{font-size:1.2rem;font-weight:850;margin-bottom:18px}.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.form-grid.two-columns{grid-template-columns:1fr 1fr}.form-grid label{display:flex;flex-direction:column;gap:7px;font-weight:720}.form-grid label>span{color:var(--danger)}.form-grid label.span-2{grid-column:span 2}.form-grid input,.form-grid select{width:100%;height:52px;border:1px solid #c9ced0;border-radius:11px;background:#fff;padding:0 14px;color:var(--ink);outline:none}.form-grid input:focus,.form-grid select:focus{border-color:var(--green);box-shadow:0 0 0 4px rgba(22,136,74,.11)}.form-grid input[readonly]{background:var(--soft);color:var(--muted)}.form-grid small{font-weight:500;color:var(--muted)}.check-line{display:flex;align-items:flex-start;gap:12px;background:var(--soft);padding:18px;border-radius:14px}.check-line input{width:20px;height:20px;accent-color:var(--green);flex:0 0 20px;margin-top:3px}.actions{display:flex;justify-content:flex-end;margin-top:28px}.actions.split{justify-content:space-between;gap:14px}.primary-button,.secondary-button{border-radius:12px;padding:14px 23px;font-weight:850;cursor:pointer}.primary-button{border:1px solid var(--green);background:var(--green);color:#fff}.primary-button:hover,.primary-button:focus-visible{background:var(--green-dark)}.secondary-button{border:1px solid var(--line);background:#fff;color:var(--ink)}button:disabled{cursor:not-allowed;opacity:.48}.message{display:none;margin-top:22px;border-radius:13px;padding:16px 18px}.message.is-visible{display:block}.message.error{background:var(--danger-soft);color:var(--danger);border:1px solid #efc3c7}.message.info{display:block;background:#eef7f1;color:#235d3a;border:1px solid #cde5d5}.installer-card{min-height:132px}.installer-card:disabled{background:var(--soft)}.windows-mark{font-family:"Segoe UI Symbol",sans-serif}.security-note{text-align:center;color:var(--muted);margin:25px 0 0;font-size:.9rem}footer{width:min(1180px,calc(100% - 40px));margin:0 auto 35px;border-top:1px solid var(--line);padding:25px 0;display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:.9rem}footer span:first-child{font-weight:850;color:var(--ink)}@media(max-width:850px){.intro{grid-template-columns:1fr;padding-top:44px}.choice-grid,.installer-grid,.form-grid,.form-grid.two-columns{grid-template-columns:1fr}.form-grid label.span-2{grid-column:auto}.step{padding:32px 24px}.site-header{height:82px}.brand img{width:47px;height:54px}footer{flex-direction:column}.actions.split{flex-direction:column-reverse}.actions.split button{width:100%}}@media(max-width:520px){main,.site-header,footer{width:min(100% - 24px,1180px)}.brand small{display:none}.intro h1{font-size:2.55rem}.download-shell{border-radius:20px}.step{padding:26px 18px}.section-heading{gap:12px}.choice-card,.installer-card{padding:19px;gap:12px}.choice-icon,.os-mark{width:46px;height:46px}.primary-button{width:100%}}