body {
    background: #f4f6fb;
}

.academic-hero {
    background: radial-gradient(circle at top, #1e3a8a, #020617);
    padding: 40px 20px;
    color: #fff;
    text-align: center;
}

.hero-content h1 {
    font-size: 42px;
    letter-spacing: 1px;
}

.academic-wrapper {
    max-width: 1150px;
    margin: -60px auto 60px;
    padding: 0 20px;
}

.section-block {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 35px;
    box-shadow: 0 25px 60px rgba(0,0,0,.08);
}

.section-block.glass {
    background: rgba(255,255,255,.75);
    backdrop-filter: blur(12px);
}

.section-block.highlight {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    color: #fff;
}

.section-header {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-bottom: 20px;
}

.timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(200px,1fr));
    gap: 20px;
}

.time-item {
    padding: 20px;
    border-left: 4px solid #2563eb;
    background: #f8fafc;
    border-radius: 10px;
}

.time-item.highlight {
    background: #1e40af;
    color: #fff;
}
.calendar-link-box {
    margin-top: 25px;
    padding: 20px;
    border-radius: 14px;
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.calendar-link-box p {
    font-size: 15px;
    color: #1e293b;
}

.calendar-btn {
    align-self: flex-start;
    background: linear-gradient(135deg, #2563eb, #1e40af);
    color: #fff;
    padding: 12px 22px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 25px rgba(37,99,235,.35);
}

.calendar-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(37,99,235,.45);
}

.pill-list span {
    display: inline-block;
    padding: 10px 18px;
    background: #e0e7ff;
    border-radius: 50px;
    margin: 6px;
    font-weight: 600;
}

.tabs {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 10px;
}

.tabs input {
    display: none;
}

.tabs label {
    padding: 14px;
    background: #e5e7eb;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
}

.tabs input:checked + label {
    background: #2563eb;
    color: #fff;
}

.tab-content {
    grid-column: 1 / -1;
    display: none;
    background: #f8fafc;
    padding: 20px;
    border-radius: 12px;
}

#tab1:checked ~ #content1,
#tab2:checked ~ #content2,
#tab3:checked ~ #content3,
#tab4:checked ~ #content4 {
    display: block;
}

.split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.clean-list li {
    padding: 10px 0;
    border-bottom: 1px dashed #d1d5db;
}

.grade-box div {
    display: flex;
    justify-content: space-between;
    padding: 12px;
    margin-bottom: 10px;
    background: #f1f5f9;
    border-radius: 10px;
}