nav {
    background: white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

.hero {
    padding: 1rem 2rem 1rem;
    background: var(--gray-50);
}

.hero-content {
    max-width: 80%;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--gray-900);
}

.hero p {
    font-size: 1.05rem;
    color: var(--gray-600);
    max-width: 720px;
}

.intro-note {
    margin-top: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.9rem;
    border-radius: 999px;
    background: #dbeafe;
    color: var(--primary-dark);
    font-size: 0.95rem;
    font-weight: 600;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.calculator-list {
    padding: 2rem;
}

.section-heading {
    margin-bottom: 1.5rem;
}

.section-heading h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.5rem;
}

.section-heading p {
    color: var(--gray-600);
    font-size: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
}

.tool-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.tool-card-header {
    display: flex;
    align-items: center;
    gap: 0.9rem;
}

.tool-card-icon {
    width: 48px;
    height: 48px;
    background: #dbeafe;
    color: var(--primary-dark);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.tool-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray-900);
}

.tool-card p,
.tool-card li {
    color: var(--gray-600);
    font-size: 0.98rem;
}

.tool-card ul {
    padding-left: 1.1rem;
}

.tool-card ul li + li {
    margin-top: 0.45rem;
}

.tool-card-footer {
    margin-top: auto;
}

.tool-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    text-decoration: none;
    color: var(--primary);
    font-weight: 700;
}

.tool-link:hover {
    color: var(--primary-dark);
}

.coming-soon {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-radius: 14px;
    background: var(--gray-100);
    color: var(--gray-700);
}

.coming-soon h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero,
    .calculator-list {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}