.header {
    text-align: center;
    margin-bottom: 1rem;
}

.header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    letter-spacing: -0.02em;
}

.header .subhead {
    font-size: 1.3rem;
    display: inline-block;
    padding: 0.6rem 2.4rem;
    border-radius: 60px;
    font-weight: 500;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.intro-card {
    border-radius: 30px;
    padding: 2rem 2.8rem;
    margin-bottom: 2rem;
    box-shadow: 0 18px 30px -8px rgba(0,0,0,0.3);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 2.2rem;
    color: white;
}

.intro-card i {
    font-size: 4.2rem;
    background: rgba(255,255,255,0.15);
    border-radius: 70px;
    padding: 1rem;
}

.intro-text {
    flex: 1;
    font-size: 1.25rem;
    font-weight: 400;
}

.intro-text strong {
    font-weight: 600;
}

/* bölüm başlıkları */
.section-title {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 3rem 0 2rem 0;
    border-bottom: 3px solid;
    padding-bottom: 0.9rem;
}

.section-title i {
    font-size: 2.7rem;
    width: 65px;
}

.section-title h2 {
    font-size: 1.8rem;
    font-weight: 650;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.card {
    background: #ffffff;
    border-radius: 28px;
    padding: 1.9rem 1.6rem 2.2rem 1.6rem;
    box-shadow: 0 8px 22px rgba(0,0,0,0.05);
    border: 1px solid rgba(0,0,0,0.1);
    transition: transform 0.15s ease, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px -8px rgba(0,0,0,0.2);
}

.card-icon {
    font-size: 2.4rem;
    width: 65px;
    height: 65px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 22px;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.6rem;
    font-weight: 650;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.card p, .card ul {
    font-size: 1rem;
    margin-bottom: 0.6rem;
    flex: 1;
}

.card ul {
    padding-left: 1.4rem;
}

.card li {
    margin-bottom: 0.4rem;
}

.badge {
    font-weight: 600;
    font-size: 0.8rem;
    padding: 0.3rem 1.1rem;
    border-radius: 40px;
    display: inline-block;
    margin-top: 1rem;
    align-self: flex-start;
}

.table-wrap {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: 28px;
    padding: 1.5rem;
    border: 1px solid;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
}

th {
    padding: 1rem;
    font-weight: 600;
    text-align: left;
    border-radius: 16px 16px 0 0;
    color: white;
}

td {
    padding: 1rem;
    border-bottom: 1px solid;
}

tr:last-child td {
    border-bottom: none;
}

.pill-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 1rem;
    margin-top: 1rem;
}

.pill {
    background: white;
    border-radius: 60px;
    padding: 0.7rem 1.5rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    font-weight: 500;
    border: 1px solid;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.pill i {
    font-size: 1.2rem;
}

.highlight-card {
	background: #f6efe2;
	border-radius: 28px;
	padding: 2rem 2.5rem;
	margin: 2.8rem 0 1.5rem 0;
	border: 1px solid #f6d597;
}

.highlight-card h3 {
	font-size: 2rem;
	font-weight: 700;
	color: #6b4f0e;
	margin-bottom: 1.8rem;
	display: flex;
	align-items: center;
	gap: 12px;
}

.highlight-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
	gap: 1.2rem;
}

.highlight-item {
	background: white;
	padding: 1.2rem 1.5rem;
	border-radius: 60px 20px 20px 60px;
	font-weight: 500;
	box-shadow: 0 4px 8px rgba(0,0,0,0.05);
	border: 1px solid #ebd7af;
	display: flex;
	align-items: center;
	gap: 12px;
}

.highlight-item i {
	color: #b8860b;
	font-size: 1.5rem;
	min-width: 30px;
}

.formula-box {
	background: #1e2f3f;
	color: #f9eac3;
	border-radius: 28px;
	padding: 2rem 2.5rem;
	margin: 2.5rem 0;
	box-shadow: inset 0 0 0 1px #ddb56b, 0 15px 30px -12px #0a1f2c;
}

.formula-box h3 {
	font-size: 2rem;
	color: #f5c56e;
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 1.5rem;
}

.math-block {
	background: #0f212e;
	padding: 1.5rem 2rem;
	border-radius: 2rem;
	font-size: 1.4rem;
	font-weight: 500;
	color: #f5d791;
	text-align: center;
	margin: 1.8rem 0;
	border-left: 8px solid #e2a443;
}

.math-block i {
	color: #f3b751;
	margin: 0 8px;
}

.bottom-note {
    background:#f3f9ff; 
	border-radius:1rem; 
	margin-bottom:2rem; 
	padding:2rem;
    border: 1px solid #d9ecff;	
}

.footer-note {
    text-align: center;
    font-size: 0.95rem;
    margin-top: 3.5rem;
    padding-top: 1.8rem;
    border-top: 1px solid;
}

.badge-light {
	background: #e1f0f3;
	color: #105f68;
	font-weight: 600;
	font-size: 0.8rem;
	padding: 0.3rem 1rem;
	border-radius: 40px;
	display: inline-block;
	margin-top: 1rem;
	align-self: flex-start;
}

.badge-navy {
	background: #e3f0fc;
	color: #12638b;
	font-weight: 600;
	font-size: 0.8rem;
	padding: 0.3rem 1.1rem;
	border-radius: 40px;
	display: inline-block;
	margin-top: 1rem;
	align-self: flex-start;
}

.arrow-up { color: #22c55e; font-weight: bold; }
.arrow-down { color: #ef4444; font-weight: bold; }

@media (max-width: 600px) {
    .container { padding: 1.5rem; }
    .header h1 { font-size: 2.4rem; }
    .section-title h2 { font-size: 1.8rem; }
}