.page-index { color: #333333; background-color: #ffffff; }
.page-index__hero-section { padding: 0; margin: 0; width: 100%; overflow: hidden; background: linear-gradient(135deg, #113B7A 0%, #1D5FD1 100%); }
.page-index__hero-container { width: 100%; max-width: 1920px; margin: 0 auto; }
.page-index__hero-link { display: block; width: 100%; }
.page-index__hero-image { width: 100%; height: auto; display: block; object-fit: cover; aspect-ratio: 17/5; border: none; }
.page-index__logo-grid-section { max-width: 1200px; margin: 20px auto 30px; padding: 0 16px; }
.page-index__logo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px 16px; justify-items: center; align-items: stretch; }
.page-index__logo-item { display: flex; flex-direction: column; align-items: center; gap: 10px; width: 100%; max-width: 280px; background: #ffffff; border-radius: 12px; padding: 12px; box-sizing: border-box; border: 1px solid #e8eef5; transition: transform .2s ease; }
.page-index__logo-item:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(4, 119, 219, 0.12); }
.page-index__logo-image { width: 100%; height: auto; aspect-ratio: 2/1; object-fit: contain; display: block; background: transparent; }
.page-index__logo-cta { display: inline-block; padding: 10px 22px; min-width: 100px; border-radius: 999px; background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%); color: #ffffff; font-weight: 600; font-size: 14px; text-decoration: none; text-align: center; box-shadow: 0 4px 14px rgba(4, 119, 219, 0.35); border: none; transition: background .2s, opacity .2s; }
.page-index__logo-cta:hover { opacity: .9; }
.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: #ffffff; }
.page-index__guide-inner { max-width: 1040px; margin: 0 auto; padding: 16px 16px 48px; box-sizing: border-box; color: #333333; }
.page-index__guide-title { text-align: center; color: #0477db; font-weight: 800; margin: 12px 0 24px; font-size: clamp(1.4rem, 2.4vw, 2.2rem); line-height: 1.3; }
.page-index__guide-lead { font-size: 1.1rem; line-height: 1.8; margin-bottom: 30px; color: #4a5568; }
.page-index__guide-inner h2 { color: #113B7A; font-size: clamp(1.25rem, 2vw, 1.6rem); line-height: 1.35; margin-top: 2em; margin-bottom: .8em; font-weight: 700; }
.page-index__guide-inner h3 { color: #1D5FD1; font-size: clamp(1rem, 1.6vw, 1.25rem); margin-top: 1.6em; margin-bottom: .5em; font-weight: 700; }
.page-index__guide-inner p { line-height: 1.8; color: #333; margin-bottom: 1.4em; }
.page-index__guide-inner a { color: #113B7A; text-decoration: underline; }
.page-index__guide-figure { margin: 28px auto; text-align: center; max-width: 800px; }
.page-index__guide-figure img { width: 100%; height: auto; aspect-ratio: 2/1; object-fit: cover; display: block; border-radius: 8px; }
.page-index__guide-figure figcaption { font-size: .9rem; color: #666; margin-top: 10px; line-height: 1.6; }
.page-index__note-list {
    padding-left: 20px; margin-bottom: 1.4em; line-height: 1.8;
    color: #333;
}
@media (max-width: 1024px) {
    .page-index__logo-grid { gap: 20px 14px; }
}
@media (max-width: 768px) {
    .page-index__hero-image { aspect-ratio: 2/1; }
    .page-index__logo-grid-section { margin-top: 10px; padding: 0 10px; }
    .page-index__logo-grid { grid-template-columns: repeat(2, 1fr); gap: 16px 10px; }
    .page-index__logo-item { max-width: 100%; padding: 8px; }
    .page-index__logo-item:nth-child(5),
    .page-index__logo-item:nth-child(6) { grid-column: auto; }
    .page-index__logo-cta { font-size: 12px; width: 100%; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
    .page-index__guide-inner { padding: 4px 14px 36px; }
    .page-index__guide-title { font-size: 1.4rem; margin-top: 8px; }
    .page-index__guide-figure { margin: 20px auto; }
    .page-index__hero-link,
    .page-index__logo-image,
    .page-index__guide-figure img { max-width: 100% !important; height: auto !important; }
    .page-index { overflow-x: hidden; max-width: 100%; }
}