:root {
    --primary: #0056b3;
    --secondary: #00a8e8;
    --primary-dark: #004494;
    --dark: #1a1f24;
    --light: #f8f9fa;
    --white: #ffffff;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 15px 40px rgba(0, 86, 179, 0.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; }
body { background-color: var(--light); color: var(--dark); line-height: 1.6; }
a { text-decoration: none; color: var(--primary); transition: all 0.3s ease; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Navigation */
header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 1000; }
.nav-container { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; }
.logo { font-size: 26px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.nav-links { display: flex; gap: 25px; align-items: center; }
.nav-links a { color: var(--dark); font-weight: 600; font-size: 0.95rem; }
.nav-links a:hover { color: var(--secondary); }
.hamburger { display: none; font-size: 24px; cursor: pointer; background: none; border: none; color: var(--dark); }

/* Elevated Hero */
.hero { background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%); color: var(--white); padding: 120px 20px; text-align: center; position: relative; overflow: hidden; }
.hero::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%); pointer-events: none; }
.hero h1 { font-size: 3.5rem; font-weight: 800; margin-bottom: 20px; letter-spacing: -1px; }
.hero p { font-size: 1.25rem; margin-bottom: 35px; max-width: 700px; margin-left: auto; margin-right: auto; opacity: 0.9; }
.btn { background: var(--secondary); color: var(--white); padding: 12px 30px; border-radius: 30px; font-weight: 700; display: inline-block; transition: all 0.3s ease; box-shadow: 0 4px 15px rgba(0, 168, 232, 0.4); text-transform: uppercase; letter-spacing: 0.5px; font-size: 0.9rem; }
.btn:hover { background: var(--white); color: var(--primary); box-shadow: 0 6px 20px rgba(255, 255, 255, 0.4); transform: translateY(-2px); }

/* Sections & Grids */
.section { padding: 90px 0; }
.section-title { text-align: center; font-size: 2.5rem; font-weight: 800; margin-bottom: 50px; color: var(--dark); }
.section-title span { color: var(--primary); }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* Elevated Enterprise Cards */
.card { background: var(--white); padding: 40px 30px; border-radius: var(--radius); box-shadow: var(--shadow); transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1); position: relative; display: flex; flex-direction: column; border: 1px solid rgba(0,0,0,0.05); }
.card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
.card-icon { font-size: 2.5rem; color: var(--secondary); margin-bottom: 20px; }
.price-tag { font-size: 2.5rem; font-weight: 800; color: var(--primary); margin: 15px 0 25px; display: flex; align-items: baseline; }
.price-tag span { font-size: 1rem; color: #777; font-weight: 500; margin-left: 5px; }

/* Feature Lists */
.feature-list { margin-bottom: 30px; flex-grow: 1; }
.feature-list li { margin-bottom: 12px; padding-left: 30px; position: relative; font-size: 0.95rem; color: #444; }
.feature-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--secondary); font-weight: 900; font-size: 1.1rem; }

/* Expandable Accordion (For endless directories) */
details.directory-expand { background: var(--light); border-radius: 8px; padding: 15px; margin-bottom: 25px; border: 1px solid #e1e5eb; }
details.directory-expand summary { font-weight: 700; color: var(--primary); cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; }
details.directory-expand summary::-webkit-details-marker { display: none; }
details.directory-expand summary::after { content: '+'; font-size: 1.5rem; color: var(--secondary); }
details.directory-expand[open] summary::after { content: '-'; }

/* Scalable Flex Badges */
.badge-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.badge { background: rgba(0, 168, 232, 0.1); border: 1px solid rgba(0, 168, 232, 0.2); color: var(--primary-dark); padding: 6px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 700; white-space: nowrap; transition: all 0.2s; }
.badge:hover { background: var(--primary); color: var(--white); }

/* Footer */
footer { background: var(--dark); color: #a0aab2; padding: 70px 0 20px; border-top: 5px solid var(--primary); }
.footer-col h3 { margin-bottom: 25px; color: var(--white); font-weight: 700; }
.footer-col a { color: #a0aab2; display: block; margin-bottom: 12px; }
.footer-col a:hover { color: var(--secondary); padding-left: 5px; }
.footer-bottom { text-align: center; padding-top: 30px; border-top: 1px solid rgba(255,255,255,0.1); margin-top: 50px; font-size: 0.9rem; }

/* Responsive */
@media (max-width: 992px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .hero h1 { font-size: 2.8rem; }
}
@media (max-width: 768px) {
    .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: var(--white); padding: 20px 0; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
    .nav-links.active { display: flex; }
    .hamburger { display: block; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .price-tag { font-size: 2rem; }
}