:root{--bg:#f6f7f8;--paper:#fff;--ink:#111820;--muted:#64727b;--line:#dfe4e7}
*{box-sizing:border-box}
html{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
body{margin:0}
a{text-decoration:none;color:inherit}
.container{width:min(1160px,calc(100% - 40px));margin:auto}
.topbar{height:76px;background:rgba(255,255,255,.92);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(14px)}
.nav{height:100%;display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:10px;font-weight:750;font-size:19px}
.logo-mark{display:grid;place-items:center;width:31px;height:31px;background:var(--ink);color:#fff;border-radius:8px;font-size:15px}
nav{display:flex;gap:28px;font-size:14px;color:#53616a}
.hero{background:linear-gradient(180deg,#fff,#f6f7f8)}
.hero-grid{min-height:660px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:70px}
.tag,.section-title>span{font-weight:750;font-size:11px;letter-spacing:2.2px;color:#819099}
h1{font-size:68px;line-height:1;letter-spacing:-3.7px;margin:18px 0 27px}
h2{font-size:40px;letter-spacing:-2px}
h3{font-size:20px}
.hero-text{font-size:20px;line-height:1.65;color:var(--muted);max-width:670px}
.hero-actions{display:flex;gap:12px;margin-top:34px}
.btn{padding:13px 19px;border-radius:9px;font-size:14px;font-weight:650;border:1px solid var(--line)}
.btn.primary{background:var(--ink);color:#fff;border-color:var(--ink)}
.btn.ghost{background:#fff}
.hero-meta{display:flex;flex-wrap:wrap;gap:18px;margin-top:38px;color:#7b8991;font-size:12px}
.window{background:#fff;border:1px solid #dce3e6;border-radius:18px;box-shadow:0 32px 90px rgba(27,43,52,.13);overflow:hidden}
.window-head{height:50px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 18px;color:#75838b;font-size:13px}
.window-body{padding:18px}
.folder-row{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;padding:15px 8px;border-bottom:1px solid #edf0f2}
.folder{width:32px;height:25px;border-radius:4px;background:#e0e8eb}
.folder-row small{display:block;color:#89969d;margin-top:3px}
.activity{margin-top:18px;background:#f5f7f8;border-radius:10px;padding:17px}
.activity small,.activity strong{display:block}
.section{padding:105px 0}
.section-title{max-width:670px;margin-bottom:50px}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.features article{padding:28px;background:#fff;border:1px solid var(--line);border-radius:14px}
.features p{color:var(--muted);line-height:1.75}
.copyright{padding:28px 0;color:#89969d;font-size:12px}
@media(max-width:800px){nav{display:none}.hero-grid{grid-template-columns:1fr;padding:90px 0}.dashboard{display:none}h1{font-size:48px}.features{grid-template-columns:1fr}}