:root {
    --primary: #1B264F;
    --secondary: #5FA8D3;
    --accent: #274C77;
    --light: #F8FAFC;
    --dark: #0F172A;
    --text: #334155;
    --white: #ffffff;
    --overlay: rgba(27, 38, 79, 0.85);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', 'Segoe UI', sans-serif; line-height: 1.6; color: var(--text); background: var(--white); overflow-x: hidden; }

header { background: var(--white); padding: 0.8rem 5%; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 2px 15px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; }
.logo-container img { height: 50px; width: auto; display: block; }

nav a { margin-left: 25px; text-decoration: none; color: var(--dark); font-weight: 600; font-size: 0.9rem; transition: 0.3s; text-transform: uppercase; letter-spacing: 0.5px; }
nav a:hover { color: var(--secondary); }

/* Hero Sections with Backgrounds */
.hero { 
    position: relative;
    color: white; 
    padding: 160px 5%; 
    text-align: center; 
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
.hero::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--overlay);
    z-index: 1;
}
.hero-content { position: relative; z-index: 2; }
.hero h1 { font-size: 3.5rem; margin-bottom: 25px; font-weight: 800; line-height: 1.1; }
.hero p { font-size: 1.3rem; max-width: 850px; margin: 0 auto 40px; opacity: 0.9; }

.section { padding: 90px 5%; }
.container { max-width: 1200px; margin: 0 auto; }
h2 { font-size: 2.5rem; color: var(--primary); margin-bottom: 50px; text-align: center; font-weight: 700; }

/* Image Grid and Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 35px; }
.card { background: white; border-radius: 12px; overflow: hidden; box-shadow: 0 10px 30px rgba(0,0,0,0.05); transition: 0.4s; }
.card-img { height: 200px; width: 100%; object-fit: cover; }
.card-content { padding: 35px; border-bottom: 5px solid var(--secondary); }
.card:hover { transform: translateY(-10px); }

.btn { padding: 16px 35px; border-radius: 6px; text-decoration: none; font-weight: 700; display: inline-block; cursor: pointer; border: none; transition: 0.3s; text-transform: uppercase; font-size: 0.85rem; }
.btn-primary { background: var(--secondary); color: white; }
.btn-outline { border: 2px solid white; color: white; margin-left: 15px; }

footer { background: var(--dark); color: white; padding: 80px 5% 30px; }
.footer-logo img { height: 60px; margin-bottom: 25px; filter: brightness(0) invert(1); }

/* Image classes for placeholder visuals */
.img-wrap { width: 100%; border-radius: 12px; margin-bottom: 30px; box-shadow: 0 10px 20px rgba(0,0,0,0.1); }