.science-card {
 background: var(--white);
 border: 1px solid var(--border-gray);
 border-radius: 12px;
 padding: 1rem;
 margin-bottom: 0.75rem;
 }
 .science-card h3 {
 color: var(--primary-navy);
 margin-bottom: 1rem;
 display: flex;
 align-items: center;
 gap: 12px;}
 .science-card h3 i {
 color: var(--primary-blue);
 }
 
 .pore-visual {
 background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
 border-radius: 12px;
 padding: 1rem;
 text-align: center;
 }
 .pore-visual .micropore { background: #1a365d; color: white; padding: 1rem; border-radius: 8px; margin: 0.5rem; display: inline-block; }
 .pore-visual .mesopore { background: #2b6cb0; color: white; padding: 1rem; border-radius: 8px; margin: 0.5rem; display: inline-block; }
 .pore-visual .macropore { background: #63b3ed; color: white; padding: 1rem; border-radius: 8px; margin: 0.5rem; display: inline-block; }
 
 .isotherm-box {
 background: var(--white);
 border-left: 4px solid var(--primary-blue);
 padding: 1rem;
 border-radius: 0 8px 8px 0;
 margin-bottom: 1rem;
 }
 .isotherm-box h4 {
 color: var(--primary-navy);
 margin-bottom: 0.5rem;
 }
 
 .formula-box {
 background: var(--light-gray);
 border-radius: 8px;
 padding: 1rem 1.5rem;
 font-family: monospace;
 font-size: 1rem;
 color: var(--primary-navy);
 text-align: center;
 margin: 1rem 0;
 }
 
 .mechanism-card {
 background: var(--white);
 border: 1px solid var(--border-gray);
 border-radius: 12px;
 padding: 1rem; }
 .mechanism-card h4 {
 color: var(--primary-navy);
 margin-bottom: 0.75rem;
 }
 
 .data-table {
 width: 100%;
 border-collapse: collapse;
 margin-top: 1rem;
 }
 .data-table th,
 .data-table td {
 padding: 0.875rem 1rem;
 text-align: left;
 border-bottom: 1px solid var(--border-gray);
 }
 .data-table th {
 background: var(--light-gray);
 color: var(--primary-navy);
 font-weight: 600;
 }
 .hero-features {
 display: grid;
 grid-template-columns: repeat(4, 1fr);
 gap: 14px;
 margin-top: 2.5rem;
 }
 .hero-feature-item {
 background: rgba(255,255,255,0.1);
 border-radius: 12px;
 padding: 14px;
 text-align: center;
 transition: all 0.3s ease;
 }
 .hero-feature-item:hover {
 background: rgba(255,255,255,0.15);
 transform: translateY(-4px);
 }
 .hero-feature-item i {
 font-size: 2rem;
 color: var(--accent-gold);
 margin-bottom: 12px;
 }
 .hero-feature-item h4 {
 color: var(--white);
 font-size: 1rem;
 margin-bottom: 4px;
 }
 .hero-feature-item p {
 color: rgba(255,255,255,0.7);
 font-size: 0.875rem;
 margin: 0;
 }
 @media (max-width: 992px) {
 .hero-features { grid-template-columns: repeat(2, 1fr); }
 }
 @media (max-width: 768px) {
 .hero-features { grid-template-columns: 1fr; gap: 16px; }
 .hero-feature-item { padding: 14px; }
 }
 h3 span { flex: 1; text-align: center; }
.hero-features a.hero-feature-item { transition: all 0.3s ease; }
.hero-features a.hero-feature-item:hover { transform: translateY(-4px); background: rgba(255,255,255,0.15); }
.hero-features a.hero-feature-item:hover h4 { color: #8a6d1c; }