:root {
    --sibau-blue: #2c3e50;
    --sibau-accent: #4e73df;
    --sibau-light: #fdfcfb;
    --sibau-text: #34495e;
}

body {
    background-color: var(--sibau-light);
    color: var(--sibau-text);
    font-family: 'Inter', sans-serif;
    scroll-behavior: smooth;
}

h1, h2, h3, .playfair {
    font-family: 'Playfair Display', serif;
}

.navbar {
    background-color: white;
    border-bottom: 1px solid #eee;
    padding: 1rem 0;
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--sibau-blue) !important;
    letter-spacing: 1px;
}

.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #fdfcfb 0%, #f3e5d8 100%);
    border-bottom: 1px solid #ddd;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--sibau-blue);
}

.hero-img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 15px 30px rgba(0,0,0,0.1));
}

.btn-sibau-primary {
    background-color: var(--sibau-blue);
    color: white !important;
    padding: 12px 25px;
    font-weight: 600;
    border: none;
    transition: 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-sibau-primary:hover {
    background-color: var(--sibau-accent);
    transform: translateY(-2px);
}

.btn-sibau-outline {
    border: 2px solid var(--sibau-blue);
    color: var(--sibau-blue) !important;
    padding: 12px 25px;
    font-weight: 600;
    transition: 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-sibau-outline:hover {
    background-color: var(--sibau-blue);
    color: white !important;
}

.blog-ribbon {
    background-color: var(--sibau-accent);
    color: white;
    padding: 12px 0;
    font-size: 0.9rem;
}

.blog-ribbon a {
    color: white;
    text-decoration: underline;
    font-weight: bold;
}

.history-section {
    padding: 80px 0;
    line-height: 1.8;
}

.dropcap {
    float: left;
    font-family: 'Playfair Display', serif;
    font-size: 75px;
    line-height: 60px;
    padding-top: 4px;
    padding-right: 12px;
    color: var(--sibau-accent);
}

.feature-box {
    background: white;
    border: 1px solid #eee;
    border-radius: 12px;
    padding: 35px;
    transition: all 0.3s ease;
    height: 100%;
    text-align: center;
}

.feature-box:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-color: var(--sibau-accent);
    transform: translateY(-5px);
}

.feature-icon {
    width: 65px;
    height: 65px;
    background: rgb(54 34 230 / 10%);
    color: var(--sibau-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin: 0 auto 20px auto;
    font-size: 1.6rem;
}

footer {
    background: var(--sibau-blue);
    color: white;
    padding: 50px 0;
    margin-top: 50px;
}