:root {
    --primary: #1B365D; /* Professional Trust Blue */
    --accent: #3182CE;
    --bg-light: #F8FAFC;
    --text-dark: #1A202C;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-dark);
    margin: 0;
    line-height: 1.6;
}

.container { width: 85%; max-width: 1200px; margin: auto; }

/* Navbar */
.navbar { background: #fff; padding: 20px 0; border-bottom: 1px solid #e2e8f0; position: sticky; top: 0; z-index: 100; }
.navbar .container { display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; text-decoration: none; color: var(--primary); }
.logo span { color: var(--accent); }
.nav-links { display: flex; list-style: none; gap: 30px; }
.nav-links a { text-decoration: none; color: var(--text-dark); font-weight: 600; }

/* Hero */
.hero { padding: 100px 0; text-align: center; background: linear-gradient(135deg, #fff 0%, #edf2f7 100%); }
.hero h1 { font-size: 3rem; margin-bottom: 20px; }
.highlight { color: var(--accent); border-bottom: 4px solid var(--accent); }

/* Calculator */
.calc-card { background: #fff; border-radius: 15px; padding: 40px; box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1); margin-top: -50px; }
.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; margin-top: 20px; }
.input-group label { display: block; font-weight: 600; margin-bottom: 10px; }
.input-group input, .input-group select { width: 100%; padding: 12px; border: 1px solid #cbd5e0; border-radius: 8px; }
.btn-calc { background: var(--primary); color: #fff; border: none; padding: 15px; border-radius: 8px; cursor: pointer; font-weight: bold; transition: background 0.3s; }
.btn-calc:hover { background: var(--accent); }

/* Results */
.results-box { margin-top: 30px; padding: 20px; background: #ebf8ff; border-left: 5px solid var(--accent); border-radius: 5px; }
.hidden { display: none; }

/* Blog Grid */
.post-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
.post-card { background: #fff; border-radius: 10px; overflow: hidden; border: 1px solid #e2e8f0; }
.post-card img { width: 100%; height: 200px; object-fit: cover; }
.post-content { padding: 20px; }