:root{--bg:#f6f7fb;--surface:#fff;--text:#1f2937;--muted:#667085;--border:#e5e7eb;--shadow:0 18px 45px rgba(15,23,42,.10);--radius:22px;--office:#2563eb;--excel:#217346;--word:#185abd;--powerpoint:#c43e1c;--access:#7f3f98}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{text-decoration:none;color:inherit}.container{width:min(1140px,calc(100% - 32px));margin:0 auto}.topbar{background:rgba(255,255,255,.95);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20;backdrop-filter:blur(10px)}.nav{min-height:74px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{font-weight:900;letter-spacing:-.035em;font-size:1.25rem}.brand span{color:var(--office)}.nav-links{display:flex;gap:16px;align-items:center;color:var(--muted);font-weight:700}.nav-links a:hover{color:var(--office)}.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:11px 18px;font-weight:800;border:1px solid transparent}.btn-primary{background:var(--office);color:#fff}.btn-secondary{background:#fff;border-color:var(--border)}.hero{padding:72px 0 42px;background:radial-gradient(circle at top left,rgba(37,99,235,.16),transparent 38%),linear-gradient(180deg,#fff 0%,var(--bg) 100%)}.eyebrow{display:inline-flex;background:#eef4ff;border:1px solid #c7d7fe;border-radius:999px;padding:7px 12px;color:#1d4ed8;font-weight:800;margin-bottom:18px}h1{font-size:clamp(2.3rem,5vw,4.7rem);line-height:1.02;margin:0 0 20px;letter-spacing:-.06em;max-width:920px}.lead{font-size:1.18rem;color:var(--muted);max-width:780px;margin:0 0 28px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;margin:38px 0}.app-card{background:var(--surface);border:1px solid var(--border);border-radius:28px;padding:24px;box-shadow:0 9px 24px rgba(15,23,42,.06);min-height:305px;display:flex;flex-direction:column;justify-content:space-between;transition:.2s ease}.app-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.app-card .icon{width:58px;height:58px;border-radius:18px;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1.35rem;margin-bottom:18px}.app-card h2{margin:0 0 10px;font-size:1.45rem;letter-spacing:-.04em}.app-card p{color:var(--muted);margin:0 0 18px}.excel .icon,.excel .btn{background:var(--excel)}.word .icon,.word .btn{background:var(--word)}.powerpoint .icon,.powerpoint .btn{background:var(--powerpoint)}.access .icon,.access .btn{background:var(--access)}.section{padding:48px 0}.section-title{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:22px}.section-title h2{margin:0;font-size:clamp(1.7rem,3vw,2.5rem);letter-spacing:-.045em}.section-title p{margin:0;color:var(--muted);max-width:560px}.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.feature{background:#fff;border:1px solid var(--border);border-radius:22px;padding:22px}.feature h3{margin:0 0 8px;letter-spacing:-.03em}.feature p{margin:0;color:var(--muted)}.cta{background:linear-gradient(135deg,#1e3a8a,#2563eb);color:#fff;border-radius:32px;padding:34px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta p{color:#dbeafe;margin:0}.footer{padding:34px 0;background:#fff;border-top:1px solid var(--border);color:var(--muted)}.footer-inner{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}@media(max-width:980px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid{grid-template-columns:1fr}}@media(max-width:680px){.nav{align-items:flex-start;flex-direction:column;padding:18px 0}.nav-links{flex-wrap:wrap}.grid{grid-template-columns:1fr}.cta,.section-title{align-items:flex-start;flex-direction:column}}