.landing-hero {
    background: #1f2937;
    color: white;
    border-color: #1f2937;
    padding: 48px;
}

.landing-hero h2 {
    max-width: 860px;
    margin: 0;
    font-size: clamp(2rem, 5vw, 4rem);
    line-height: 1.05;
}

.landing-hero p {
    max-width: 680px;
    margin: 24px 0 0;
    color: #d1d5db;
    font-size: 1.15rem;
    line-height: 1.55;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 32px;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
}

.primary-button {
    background: white;
    color: #111827;
}

.secondary-button {
    border: 1px solid #9ca3af;
    color: white;
}

.primary-button:hover {
    background: #e5e7eb;
}

.secondary-button:hover {
    background: rgba(255, 255, 255, 0.12);
}

.section {
    max-width: 1120px;
    margin: 0 auto 24px;
    border-radius: 12px;
    padding: 28px;
}

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

.section p {
    line-height: 1.55;
}

.feature-grid,
.navigation-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.feature-card,
.nav-card,
.download-box {
    border: 1px solid #ddd;
    border-radius: 10px;
    background: #fafafa;
    padding: 18px;
}

.feature-card h3 {
    margin-top: 0;
}

.app-section {
    display: grid;
    grid-template-columns: 2fr minmax(240px, 1fr);
    gap: 24px;
    align-items: start;
}

.app-download-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.download-title {
    font-weight: bold;
    font-size: 1.1rem;
}

.download-box button {
    margin-top: 8px;
    padding: 9px 14px;
    border: 1px solid #c8ccd4;
    border-radius: 6px;
    background: #e5e7eb;
    color: #666;
    cursor: not-allowed;
}

.nav-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
    text-decoration: none;
}

.nav-card:hover {
    background: #f0f2f5;
}

.nav-card strong {
    font-size: 1.05rem;
}

.nav-card span {
    color: #555;
}

.nav-card.disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.notice {
    background: #fffdf5;
    border-color: #eadcaa;
}

.legal-section {
    max-width: 860px;
}

.legal-section h2 {
    margin-top: 28px;
    font-size: 1.25rem;
}

.legal-section h2:first-child {
    margin-top: 0;
}

.legal-section a {
    color: #1d4ed8;
}

@media (max-width: 900px) {
    .feature-grid,
    .navigation-grid,
    .app-section,
    .app-download-grid {
        grid-template-columns: 1fr;
    }

    .landing-hero {
        padding: 28px;
    }
}