.page-index {
    color: #F3F8FF;
    background: #08162B;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.page-index a {
    color: #F2C14E;
    text-decoration: none;
}
.page-index__hero-section {
    padding: 0;
    margin: 0;
    width: 100%;
    overflow: hidden;
    background: transparent;
}
.page-index__hero-container {
    width: 100%;
    max-width: 1920px;
    margin: 0 auto;
}
.page-index__hero-link {
    display: block;
    width: 100%;
}
.page-index__hero-image {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 17 / 5;
    object-fit: cover;
}
.page-index__logo-grid-section {
    background: transparent;
    max-width: 1200px;
    margin: 32px auto 40px;
    padding: 0 16px;
    box-sizing: border-box;
}
.page-index__logo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px 20px;
    justify-items: center;
}
.page-index__logo-item {
    background: #10233F;
    border: 1px solid #244D84;
    border-radius: 16px;
    padding: 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    max-width: 280px;
    box-sizing: border-box;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.page-index__logo-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.5);
}
.page-index__logo-image {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 2 / 1;
    object-fit: contain;
    background: #fff;
    border-radius: 8px;
    padding: 4px;
    box-sizing: border-box;
}
.page-index__logo-cta {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 999px;
    background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
    color: #fff;
    font-weight: 800;
    font-size: 1rem;
    line-height: 1.2;
    text-decoration: none;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(79, 168, 255, 0.4);
    transition: all 0.2s ease;
    width: auto;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
}
.page-index__logo-cta:hover {
    background: linear-gradient(180deg, #1144A6 0%, #0a2c6f 100%);
    box-shadow: 0 6px 18px rgba(79, 168, 255, 0.6);
    color: #fff;
}
.page-index__logo-item:nth-child(5) {
    grid-column: 2;
}
.page-index__logo-item:nth-child(6) {
    grid-column: 3;
}
.page-index__guide-section {
    background: transparent;
    padding-top: 16px;
}
.page-index__guide-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 16px 20px 56px;
    box-sizing: border-box;
    color: #F3F8FF;
}
.page-index__guide-inner h1, .page-index__guide-inner h2, .page-index__guide-inner h3 {
    color: #F3F8FF;
}
.page-index__guide-title {
    text-align: center;
    color: #F2C14E;
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    line-height: 1.3;
    font-weight: 700;
    margin: 0 0 24px 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}
.page-index__guide-intro {
    text-align: center;
    color: #AFC4E8;
    font-size: 1.1rem;
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto 40px;
}
.page-index__guide-intro a {
    color: #F2C14E;
}
.page-index__guide-inner h2 {
    color: #F3F8FF;
    font-size: 1.75rem;
    font-weight: 700;
    margin: 48px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid #1B3357;
}
.page-index__guide-inner h3 {
    color: #F2C14E;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 24px 0 8px;
}
.page-index__guide-inner p {
    color: #AFC4E8;
    line-height: 1.8;
    font-size: 1rem;
    margin: 12px 0;
}
.page-index__guide-figure {
    margin: 32px auto;
    text-align: center;
    max-width: 800px;
    background: #10233F;
    padding: 12px;
    border-radius: 12px;
    box-sizing: border-box;
}
.page-index__guide-figure img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 2 / 1;
    object-fit: cover;
    border-radius: 8px;
}
.page-index__guide-figure figcaption {
    font-size: 0.9rem;
    color: #F2C14E;
    margin-top: 8px;
    font-style: italic;
    line-height: 1.4;
}
.page-index__guide-list {
    color: #AFC4E8;
    line-height: 1.8;
    padding-left: 20px;
    margin: 16px 0;
}
.page-index__guide-list li {
    margin: 8px 0;
}
.page-index__guide-list li a {
    color: #F2C14E;
    font-weight: bold;
}
.page-index__guide-inner details {
    background: #10233F;
    border: 1px solid #244D84;
    border-radius: 12px;
    padding: 16px 20px;
    margin-bottom: 12px;
    color: #F3F8FF;
    box-sizing: border-box;
}
.page-index__guide-inner details summary {
    font-weight: 700;
    color: #F3F8FF;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.page-index__guide-inner details summary::-webkit-details-marker {
    display: none;
}
.page-index__guide-inner details summary::after {
    content: '+';
    font-size: 1.5rem;
    color: #F2C14E;
    line-height: 1;
    transition: transform 0.2s ease;
}
.page-index__guide-inner details[open] summary::after {
    content: '−';
}
.page-index__guide-inner details p {
    margin-top: 12px;
    color: #AFC4E8;
}
.page-index__guide-inner details p a {
    color: #F2C14E;
}
@media (max-width: 1024px) {
    .page-index__logo-grid {
        gap: 16px;
    }
    .page-index__guide-inner h2 {
        font-size: 1.5rem;
    }
}
@media (max-width: 768px) {
    .page-index__hero-section {
        padding-top: 0;
        margin-top: 0;
    }
    .page-index__hero-image {
        aspect-ratio: 4 / 1;
    }
    .page-index__logo-grid-section {
        margin: 16px auto 28px;
        padding: 0 12px;
    }
    .page-index__logo-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px 12px;
    }
    .page-index__logo-item {
        max-width: 100%;
        padding: 10px;
        gap: 10px;
    }
    .page-index__logo-cta {
        font-size: 0.9rem;
        padding: 10px 16px;
        width: 100%;
    }
    .page-index__logo-item:nth-child(5),
    .page-index__logo-item:nth-child(6) {
        grid-column: auto;
    }
    .page-index__guide-inner {
        padding: 8px 12px 32px;
    }
    .page-index__guide-title {
        font-size: clamp(1.2rem, 5vw, 1.5rem);
        text-align: center;
    }
    .page-index__guide-intro {
        font-size: 0.95rem;
    }
    .page-index__guide-inner h2 {
        font-size: 1.35rem;
    }
    .page-index__guide-inner h3 {
        font-size: 1.1rem;
    }
    .page-index__guide-figure {
        padding: 8px;
        margin: 24px auto;
    }
    .page-index__guide-figure img {
        width: 100%;
        max-width: 100%;
        height: auto;
    }
    .page-index__guide-inner details {
        padding: 12px 16px;
    }
}