:root {
    --primary: #1a237e; /* Indigo */
    --accent: #2979ff;  /* Bright Blue */
    --text-dark: #37474f;
    --text-light: #78909c;
    --white: #ffffff;
    --bg-soft: #f4f7f6;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: var(--white);
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--primary);
    text-decoration: none;
}

.logo span { color: var(--accent); }

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li a {
    text-decoration: none;
    color: var(--text-dark);
    margin-left: 25px;
    font-weight: 500;
    font-size: 0.9rem;
    transition: 0.3s;
}

.nav-links li a:hover, .nav-links li a.active {
    color: var(--accent);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Excellence Grid */
.excellence {
    padding: 80px 0;
    background-color: var(--bg-soft);
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.excel-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.02);
}

.excel-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}

.icon-circle {
    width: 80px;
    height: 80px;
    background: var(--bg-soft);
    color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px;
    transition: 0.3s;
}

.excel-card:hover .icon-circle {
    background: var(--accent);
    color: var(--white);
}

.excel-card h3 {
    margin-bottom: 15px;
    font-size: 1.25rem;
    color: var(--primary);
}

.excel-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Trust Banner */
.trust-banner {
    padding: 80px 0;
    text-align: center;
    background: var(--white);
}

.trust-banner h2 {
    margin-bottom: 20px;
    color: var(--primary);
}

.btn-wa {
    display: inline-block;
    background: #25d366;
    color: white;
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 30px;
    transition: 0.3s;
}

.btn-wa:hover {
    background: #128c7e;
    transform: scale(1.05);
}

/* Footer */
footer {
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid #eee;
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: 0.6s all ease-out;
}

.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; } /* Simpel untuk contoh ini */
    .page-header h1 { font-size: 1.8rem; }
    .grid-container { grid-template-columns: 1fr; }
}