html, body {
    width: 100%;
    overflow-x: hidden;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Anuphan', 'Noto Sans Thai', sans-serif;
    color: #0f172a;
    background:
        radial-gradient(circle at top left, rgba(14, 116, 144, 0.08), transparent 24%),
        radial-gradient(circle at top right, rgba(15, 118, 110, 0.08), transparent 28%),
        linear-gradient(180deg, #ffffff 0%, #f7fbfb 18%, #eef6f4 100%);
}

.activity-section-title {
    font-family: 'Anuphan', sans-serif;
    letter-spacing: -0.03em;
}

.activity-header {
    padding-top: 0;
}

.activity-card {
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 255, 255, 0.7);
    box-shadow: 0 14px 34px rgba(15, 118, 110, 0.08);
    transition: transform 0.28s ease, box-shadow 0.28s ease, border-color 0.28s ease;
}

.activity-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 22px 48px rgba(15, 118, 110, 0.14);
    border-color: rgba(15, 118, 110, 0.12);
}

.btn-readmore {
    background: rgba(15, 118, 110, 0.08);
    color: #33545b;
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 400;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    align-self: flex-start;
    margin-top: auto;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
    border: 0;
    text-decoration: none;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.btn-readmore:hover {
    background: rgba(15, 118, 110, 0.12);
    color: #0f172a;
    transform: translateY(-1px);
}

.activity-badge {
    letter-spacing: 0.14em;
}