:root {
    --color-navy: #08244d;
    --color-navy-2: #123d73;
    --color-blue: #2b91d1;
    --color-blue-light: #dff2ff;
    --color-blue-soft: #f2f9fd;
    --color-green: #4aa98d;
    --color-ink: #1f2937;
    --color-muted: #65758b;
    --color-line: #d9e4ef;
    --color-bg: #ffffff;
    --color-section: #f5f8fb;
    --color-card: #ffffff;
    --shadow-soft: 0 18px 42px rgba(8, 36, 77, 0.08);
    --shadow-hover: 0 22px 48px rgba(8, 36, 77, 0.14);
    --container-width: 1180px;
    --article-anchor-offset: 120px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--color-ink);
    background: var(--color-bg);
    font-family: "Noto Sans JP", "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        linear-gradient(90deg, rgba(217, 228, 239, 0.35) 1px, transparent 1px),
        linear-gradient(180deg, rgba(217, 228, 239, 0.3) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.28;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button,
input {
    font: inherit;
}

.container {
    width: min(100% - 40px, var(--container-width));
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 1000;
    padding: 10px 14px;
    color: #fff;
    background: var(--color-navy);
    transform: translateY(-140%);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #fff;
    box-shadow: 0 3px 18px rgba(8, 36, 77, 0.12);
}

.site-header-main {
    background: #fff;
    border-bottom: 1px solid rgba(217, 228, 239, 0.7);
}

.site-header-main-inner {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.official-logo {
    display: inline-flex;
    align-items: center;
    min-width: 0;
}

.official-logo picture {
    display: block;
}

.official-logo img {
    width: 171px;
    height: auto;
    max-height: 52px;
}

.header-contact {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    white-space: nowrap;
}

.header-phone {
    color: var(--color-navy);
    font-size: 19px;
    font-weight: 800;
    line-height: 1;
}

.header-inquiry {
    padding: 8px 16px;
    color: #fff;
    background: var(--color-green);
    border: 1px solid var(--color-green);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 800;
    line-height: 1.2;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.header-inquiry:hover,
.header-inquiry:focus {
    color: #fff;
    background: var(--color-navy-2);
    border-color: var(--color-navy-2);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 38px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    padding: 0;
    color: var(--color-navy);
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle span {
    width: 20px;
    height: 2px;
    background: currentColor;
    border-radius: 999px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus {
    border-color: var(--color-blue);
    background: var(--color-blue-soft);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.global-nav {
    color: #fff;
    background: var(--color-navy);
}

.global-nav-inner {
    min-height: 46px;
    display: flex;
    align-items: stretch;
    justify-content: flex-end;
}

.global-nav a,
.nav-parent {
    min-height: 46px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    color: #fff;
    background: transparent;
    border-left: 1px solid rgba(255, 255, 255, 0.14);
    font-size: 13px;
    font-weight: 800;
    font-family: inherit;
    line-height: 1.35;
    white-space: nowrap;
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-parent {
    appearance: none;
    border-top: 0;
    border-right: 0;
    border-bottom: 0;
    cursor: pointer;
}

.global-nav-inner > a:last-child {
    border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.global-nav a:hover,
.global-nav a:focus,
.nav-parent:hover,
.nav-parent:focus,
.nav-dropdown.is-open .nav-parent,
.nav-parent[aria-expanded="true"],
.global-nav a[aria-current="page"] {
    color: #fff;
    background: var(--color-navy-2);
}

.nav-dropdown {
    position: relative;
    display: flex;
}

.nav-parent::after {
    content: "";
    width: 0;
    height: 0;
    margin-left: 8px;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
    border-top: 5px solid currentColor;
}

.nav-parent[aria-expanded="true"]::after {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 20;
    width: 286px;
    padding: 6px 0;
    color: var(--color-navy);
    background: #fff;
    border-top: 3px solid var(--color-green);
    box-shadow: 0 18px 36px rgba(8, 36, 77, 0.18);
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.18s ease, transform 0.18s ease;
}

.nav-dropdown.is-open .nav-dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.nav-dropdown-menu a {
    min-height: auto;
    display: block;
    padding: 10px 16px;
    color: var(--color-navy);
    background: #fff;
    border: 0;
    border-bottom: 1px solid var(--color-line);
    font-size: 13px;
    white-space: normal;
}

.nav-dropdown-menu a:last-child {
    border-bottom: 0;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus {
    color: var(--color-blue);
    background: var(--color-blue-soft);
}

.blog-hero {
    position: relative;
    overflow: hidden;
    padding: 88px 0 76px;
    background:
        linear-gradient(120deg, rgba(255, 255, 255, 0.96), rgba(242, 249, 253, 0.92)),
        linear-gradient(135deg, rgba(43, 145, 209, 0.12), rgba(74, 169, 141, 0.08));
    border-bottom: 1px solid var(--color-line);
}

.blog-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(90deg, rgba(43, 145, 209, 0.12) 1px, transparent 1px),
        linear-gradient(180deg, rgba(43, 145, 209, 0.1) 1px, transparent 1px);
    background-size: 34px 34px;
    mask-image: linear-gradient(90deg, #000, transparent 72%);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.04fr) minmax(360px, 0.8fr);
    align-items: center;
    gap: 56px;
}

.hero-copy {
    max-width: 720px;
    min-width: 0;
}

.eyebrow {
    margin: 0 0 12px;
    color: var(--color-blue);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
}

.hero-copy h1 {
    margin: 0;
    max-width: 760px;
    color: var(--color-navy);
    font-size: 46px;
    line-height: 1.25;
    font-weight: 800;
}

.hero-copy h1 span {
    display: block;
}

.hero-lead {
    margin: 24px 0 0;
    max-width: 660px;
    color: var(--color-muted);
    font-size: 17px;
    overflow-wrap: anywhere;
    line-break: anywhere;
}

.section-heading,
.featured-content,
.article-body,
.article-hero-copy,
.article-content {
    min-width: 0;
}

.section-heading p,
.featured-content p,
.article-card p,
.article-summary,
.article-content p,
.article-end-panel p,
.cta-inner p {
    overflow-wrap: anywhere;
    line-break: anywhere;
}

.hero-actions {
    margin-top: 34px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-visual {
    min-height: 330px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-visual img {
    width: min(100%, 520px);
    filter: drop-shadow(0 24px 42px rgba(8, 36, 77, 0.15));
}

.button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 800;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.button::after {
    content: ">";
    font-size: 13px;
}

.button:hover,
.button:focus {
    transform: translateY(-1px);
    box-shadow: var(--shadow-soft);
}

.button-primary {
    color: #fff;
    background: var(--color-blue);
    border-color: var(--color-blue);
}

.button-primary:hover,
.button-primary:focus {
    background: var(--color-navy-2);
    border-color: var(--color-navy-2);
}

.button-secondary {
    color: var(--color-navy);
    background: #fff;
    border-color: var(--color-line);
}

.button-secondary:hover,
.button-secondary:focus {
    border-color: var(--color-blue);
}

.button-inline {
    color: var(--color-blue);
    background: var(--color-blue-soft);
    border-color: var(--color-blue-light);
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-blue);
    font-size: 14px;
    font-weight: 800;
}

.text-link::after {
    content: ">";
    transition: transform 0.2s ease;
}

.text-link:hover::after,
.text-link:focus::after {
    transform: translateX(3px);
}

.section-block,
.category-section,
.cta-section {
    padding: 72px 0;
}

.featured-section,
.latest-section {
    background: #fff;
}

.category-section {
    padding: 28px 0;
    background: var(--color-section);
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
}

.section-heading {
    margin-bottom: 28px;
}

.section-heading h2,
.cta-inner h2,
.article-end-panel h2,
.side-panel h2,
.article-learning-box h2 {
    margin: 0;
    color: var(--color-navy);
    line-height: 1.35;
}

.section-heading h2 {
    font-size: 30px;
}

.section-heading p:not(.eyebrow) {
    max-width: 760px;
    margin: 12px 0 0;
    color: var(--color-muted);
}

.row-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.archive-link {
    color: var(--color-blue);
    font-size: 14px;
    font-weight: 800;
}

.category-accordion {
    color: var(--color-ink);
}

.category-summary {
    list-style: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 8px 0;
}

.category-summary::-webkit-details-marker {
    display: none;
}

.category-summary::marker {
    content: "";
}

.category-summary:focus-visible {
    outline: 3px solid var(--color-blue-light);
    outline-offset: 6px;
    border-radius: 6px;
}

.category-summary-copy {
    min-width: 0;
}

.category-summary .eyebrow {
    display: none;
}

.category-summary h2 {
    margin: 0;
    color: var(--color-navy);
    font-size: 24px;
    line-height: 1.35;
}

.category-summary-action {
    display: inline-flex;
    flex-shrink: 0;
    align-items: center;
    color: var(--color-blue);
    font-size: 18px;
    font-weight: 800;
}

.category-toggle-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 28px;
    min-height: 28px;
    color: var(--color-blue);
    line-height: 1;
    transition: color 0.2s ease, transform 0.2s ease;
}

.category-toggle-icon::before {
    content: "▼";
    font-size: 16px;
}

.category-accordion[open] .category-toggle-icon {
    transform: translateY(-1px);
}

.category-accordion[open] .category-toggle-icon::before {
    content: "▲";
}

.category-summary:hover .category-toggle-icon,
.category-summary:focus-visible .category-toggle-icon {
    color: var(--color-navy);
}

.category-panel {
    padding: 16px 0 28px;
}

.category-panel-head {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 18px;
}

.featured-card {
    min-width: 0;
    display: grid;
    grid-template-columns: minmax(360px, 0.92fr) minmax(0, 1fr);
    overflow: hidden;
    background: var(--color-card);
    border: 1px solid var(--color-line);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
}

.featured-visual-link,
.article-card-visual-link {
    min-width: 0;
    display: block;
    overflow: hidden;
}

.featured-visual,
.article-card-visual {
    position: relative;
    overflow: hidden;
    background:
        linear-gradient(135deg, rgba(8, 36, 77, 0.92), rgba(18, 61, 115, 0.82)),
        linear-gradient(90deg, rgba(255, 255, 255, 0.12) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: auto, 28px 28px, 28px 28px;
}

.featured-visual {
    height: 100%;
    min-height: 330px;
}

.article-card-visual {
    aspect-ratio: 16 / 8.4;
}

.featured-visual.has-image,
.article-card-visual.has-image {
    background: var(--color-navy);
}

.featured-visual img,
.article-card-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.featured-card:hover .featured-visual img,
.article-card:hover .article-card-visual img {
    transform: scale(1.025);
}

.featured-content {
    padding: 34px;
}

.post-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 14px;
    color: var(--color-muted);
    font-size: 12px;
    font-weight: 800;
}

.post-meta a,
.post-meta span,
.post-category {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 10px;
    color: var(--color-navy);
    background: var(--color-blue-soft);
    border: 1px solid var(--color-blue-light);
    border-radius: 4px;
}

.post-meta span:last-child {
    color: var(--color-muted);
    background: #fff;
    border-color: var(--color-line);
}

.featured-content h3,
.article-card h3 {
    margin: 0;
    color: var(--color-navy);
    line-height: 1.45;
    overflow-wrap: anywhere;
    line-break: anywhere;
}

.featured-content h3 {
    font-size: 27px;
}

.featured-content p,
.article-card p {
    color: var(--color-muted);
}

.featured-content p {
    margin: 16px 0 0;
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    line-height: 1.75;
}

.featured-content .button {
    margin-top: 22px;
}

.category-filter {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.category-filter a {
    min-height: 62px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 16px;
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: 8px;
    color: var(--color-navy);
    font-size: 14px;
    font-weight: 800;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.category-filter a:hover,
.category-filter a:focus,
.category-filter a.active {
    transform: translateY(-2px);
    border-color: var(--color-blue);
    box-shadow: var(--shadow-soft);
}

.category-filter strong {
    min-width: 30px;
    min-height: 30px;
    display: inline-grid;
    place-items: center;
    color: var(--color-blue);
    background: var(--color-blue-soft);
    border-radius: 4px;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.article-card {
    min-width: 0;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    background: var(--color-card);
    border: 1px solid var(--color-line);
    border-radius: 8px;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.article-card-link {
    position: absolute;
    inset: 0;
    z-index: 3;
    border-radius: inherit;
}

.article-card-link:focus-visible {
    outline: 3px solid var(--color-blue-light);
    outline-offset: -4px;
}

.article-card:hover,
.article-card:focus-within {
    transform: translateY(-4px);
    border-color: var(--color-blue);
    box-shadow: var(--shadow-hover);
}

.article-body {
    min-width: 0;
    position: relative;
    z-index: 1;
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 16px 18px 14px;
}

.article-body .post-meta {
    margin-bottom: 10px;
}

.article-card h3 {
    font-size: 19px;
}

.article-card h3 a,
.featured-content h3 a {
    overflow-wrap: anywhere;
    line-break: anywhere;
    transition: color 0.2s ease;
}

.article-card h3 a:hover,
.featured-content h3 a:hover {
    color: var(--color-blue);
}

.article-card p {
    margin: 8px 0 0;
    font-size: 14px;
}

.article-card-summary {
    display: -webkit-box;
    overflow: hidden;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    line-height: 1.6;
}

.learning-points {
    margin-top: 18px;
    padding: 14px;
    background: linear-gradient(180deg, #fff, var(--color-blue-soft));
    border: 1px solid var(--color-line);
    border-radius: 8px;
}

.learning-points strong {
    display: block;
    margin-bottom: 8px;
    color: var(--color-navy);
    font-size: 13px;
}

.learning-points ul {
    margin: 0;
    padding-left: 18px;
    color: var(--color-ink);
    font-size: 13px;
    line-height: 1.65;
}

.learning-points li::marker {
    color: var(--color-blue);
}

.article-card .learning-points {
    margin-top: 10px;
    padding: 10px 12px;
}

.article-card .learning-points strong {
    margin-bottom: 4px;
    font-size: 12px;
}

.article-card .learning-points ul {
    font-size: 12px;
    line-height: 1.45;
}

.learning-points--compact li {
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.learning-points-more {
    color: var(--color-muted);
    font-weight: 700;
}

.audience-chips,
.article-card-tags,
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.audience-chips {
    margin-top: 14px;
}

.audience-chips span {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 10px;
    color: #0f5d4c;
    background: #e8f7f2;
    border: 1px solid #c8e9de;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 800;
}

.article-card-tags,
.article-tags {
    margin-top: 16px;
}

.article-card-tags a,
.article-card-tags span,
.article-tags a,
.article-tags span {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 3px 9px;
    color: var(--color-muted);
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
}

.article-card-tags a:hover,
.article-tags a:hover {
    color: var(--color-blue);
    border-color: var(--color-blue);
}

.article-card-taxonomy {
    display: grid;
    gap: 7px;
    margin-top: 10px;
}

.card-chip-group {
    display: grid;
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 8px;
    align-items: start;
}

.card-chip-label {
    color: var(--color-muted);
    font-size: 11px;
    font-weight: 800;
    line-height: 24px;
}

.article-card-taxonomy .audience-chips,
.article-card-taxonomy .article-card-tags {
    margin-top: 0;
    gap: 6px;
}

.article-card-taxonomy .audience-chips span {
    min-height: 24px;
    padding: 3px 8px;
}

.article-card-taxonomy .article-card-tags a,
.article-card-taxonomy .article-card-tags span {
    min-height: 24px;
    padding: 2px 8px;
}

.article-card-tags--theme span {
    color: var(--color-navy);
    background: var(--color-blue-soft);
    border-color: var(--color-blue-light);
    font-weight: 800;
}

.article-card-read {
    align-self: flex-end;
    margin-top: 10px;
    font-size: 13px;
}

.article-empty,
.article-error {
    padding: 24px;
    color: var(--color-muted);
    background: var(--color-blue-soft);
    border: 1px solid var(--color-blue-light);
    border-radius: 8px;
}

.cta-section {
    color: #fff;
    background:
        linear-gradient(135deg, rgba(8, 36, 77, 0.96), rgba(18, 61, 115, 0.95)),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: auto, 34px 34px;
}

.cta-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.7fr);
    gap: 36px;
    align-items: center;
}

.cta-inner .eyebrow,
.cta-inner h2,
.cta-inner p {
    color: #fff;
}

.cta-inner p {
    margin: 14px 0 0;
    color: rgba(255, 255, 255, 0.82);
}

.cta-actions {
    display: grid;
    gap: 10px;
}

.cta-actions .text-link {
    color: #fff;
}

.site-footer {
    padding: 42px 0 22px;
    color: rgba(255, 255, 255, 0.82);
    background: var(--color-navy);
}

.footer-layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
}

.footer-links {
    display: grid;
    align-content: start;
    gap: 8px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
    font-weight: 700;
}

.footer-links a:hover,
.footer-links a:focus {
    color: #fff;
}

.footer-company h2 {
    margin: 0 0 12px;
    color: #fff;
    font-size: 21px;
    line-height: 1.4;
}

.footer-sites {
    margin: 0 0 12px;
    color: rgba(255, 255, 255, 0.86);
    font-size: 14px;
    font-weight: 700;
    line-height: 1.7;
}

.footer-company address {
    margin: 0;
    color: rgba(255, 255, 255, 0.74);
    font-style: normal;
    font-size: 13px;
    line-height: 1.8;
}

.footer-company address a {
    color: #fff;
    font-size: 18px;
    font-weight: 800;
}

.footer-credit {
    margin: 14px 0 0;
    color: rgba(255, 255, 255, 0.52);
    font-size: 12px;
    line-height: 1.7;
}

.copyright {
    width: min(100% - 40px, var(--container-width));
    margin: 28px auto 0;
    padding-top: 16px;
    color: rgba(255, 255, 255, 0.56);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    font-size: 12px;
    text-align: right;
}

.article-page {
    background:
        linear-gradient(180deg, #eef5fb 0%, #f5f9fd 54%, #edf4fa 100%);
}

.article-detail-hero {
    position: relative;
    overflow: hidden;
    padding: 58px 0;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(8, 36, 77, 0.98), rgba(18, 61, 115, 0.94)),
        linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px),
        linear-gradient(180deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
    background-size: auto, 32px 32px, 32px 32px;
}

.article-detail-hero--image {
    background:
        linear-gradient(90deg, rgba(8, 36, 77, 0.96), rgba(8, 36, 77, 0.78), rgba(8, 36, 77, 0.44)),
        var(--article-hero-image) center / cover no-repeat;
}

.article-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, 340px);
    gap: 36px;
    align-items: start;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 13px;
}

.breadcrumb a {
    color: #fff;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.post-category {
    width: fit-content;
    color: var(--color-navy);
    background: #fff;
    border-color: rgba(255, 255, 255, 0.7);
}

.article-hero-copy h1 {
    max-width: 900px;
    margin: 18px 0 0;
    color: #fff;
    font-size: 40px;
    line-height: 1.35;
    overflow-wrap: anywhere;
    line-break: anywhere;
}

.article-summary {
    max-width: 820px;
    margin: 18px 0 0;
    color: rgba(255, 255, 255, 0.84);
    font-size: 16px;
}

.article-learning-box {
    display: grid;
    gap: 20px;
    margin-top: 18px;
    color: var(--color-ink);
}

.article-learning-box h2 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.article-learning-box ul {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    font-size: 14px;
    line-height: 1.65;
}

.article-learning-box li {
    position: relative;
    padding-left: 18px;
}

.article-learning-box li + li {
    margin-top: 8px;
}

.article-learning-box li::before {
    content: "";
    position: absolute;
    top: 0.72em;
    left: 0;
    width: 7px;
    height: 7px;
    background: var(--color-blue);
    border-radius: 50%;
    transform: translateY(-50%);
}

.article-learning-box .audience-chips {
    margin-top: 12px;
}

.article-tags a {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.22);
}

.article-tags a:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.7);
}

.article-hero-panel,
.side-panel,
.article-content-shell,
.article-end-panel {
    background: #fff;
    border: 1px solid var(--color-line);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
}

.article-hero-panel {
    padding: 24px;
    color: var(--color-ink);
}

.article-hero-panel .button {
    width: 100%;
    margin-top: 24px;
}

.article-hero-panel .eyebrow {
    margin-bottom: 0;
}

.article-hero-panel .audience-chips span {
    color: var(--color-navy);
    background: var(--color-blue-soft);
    border-color: var(--color-blue-light);
}

.article-hero-panel .article-learning-box > div {
    padding-bottom: 18px;
    border-bottom: 1px solid var(--color-line);
}

.article-hero-panel .article-learning-box > div:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.article-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 30px;
    padding: 42px 0 76px;
}

.article-main-column {
    min-width: 0;
}

.article-content-shell {
    padding: 36px;
    background: #fff;
    border-color: #cfddeb;
    box-shadow: 0 18px 46px rgba(8, 36, 77, 0.1);
}

.article-content {
    color: var(--color-ink);
    font-size: 16px;
}

.article-content h2 {
    margin: 42px 0 16px;
    padding: 14px 18px 14px 20px;
    color: var(--color-navy);
    background: linear-gradient(90deg, #edf7ff, #f7fbff);
    border-left: 5px solid var(--color-blue);
    border-bottom: 1px solid #d7e9f7;
    border-radius: 6px;
    font-size: 26px;
    line-height: 1.45;
}

.article-content h2:first-child {
    margin-top: 0;
}

.article-content h3 {
    margin: 28px 0 10px;
    color: var(--color-navy-2);
    font-size: 20px;
    line-height: 1.45;
}

.article-content p {
    margin: 16px 0;
}

.article-content ul {
    padding-left: 1.4em;
}

.article-content li {
    margin: 8px 0;
}

.article-content li::marker {
    color: var(--color-blue);
}

.article-content blockquote {
    margin: 22px 0;
    padding: 18px 20px;
    color: var(--color-navy);
    background: var(--color-blue-soft);
    border-left: 4px solid var(--color-blue);
}

.article-content a {
    color: var(--color-blue);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-content code {
    padding: 2px 6px;
    background: var(--color-section);
    border: 1px solid var(--color-line);
    border-radius: 4px;
    font-size: 0.92em;
}

.article-content pre {
    overflow: auto;
    padding: 18px;
    color: #f8fbff;
    background: #0b1e3a;
    border-radius: 8px;
}

.article-content pre code {
    padding: 0;
    color: inherit;
    background: transparent;
    border: 0;
}

.table-scroll {
    overflow-x: auto;
    margin: 22px 0;
}

.article-content table {
    width: 100%;
    min-width: 620px;
    border-collapse: collapse;
    background: #fff;
}

.article-content th,
.article-content td {
    padding: 12px 14px;
    border: 1px solid var(--color-line);
    text-align: left;
    vertical-align: top;
}

.article-content th {
    color: var(--color-navy);
    background: var(--color-blue-soft);
}

.article-detail-sidebar {
    min-width: 0;
}

.side-panel {
    position: sticky;
    top: 132px;
    padding: 22px;
}

.article-page .article-toc-panel {
    background: #fff;
    border-color: #cfddeb;
    box-shadow: 0 16px 38px rgba(8, 36, 77, 0.1);
}

.side-panel h2 {
    font-size: 17px;
}

.article-toc {
    margin-top: 14px;
}

.article-toc ol {
    margin: 0;
    padding-left: 18px;
}

.article-toc li {
    margin: 10px 0;
}

.article-toc a {
    display: block;
    padding: 5px 7px;
    color: var(--color-muted);
    border-left: 3px solid transparent;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 700;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.article-toc a:hover,
.article-toc a.is-active {
    color: var(--color-blue);
    background: rgba(43, 145, 209, 0.09);
    border-left-color: var(--color-blue);
    font-weight: 800;
}

.article-end {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 0.7fr);
    gap: 18px;
    margin-top: 24px;
}

.article-end-panel {
    padding: 24px;
    background: #fff;
}

.article-end-panel h2 {
    font-size: 20px;
}

.article-end-panel p {
    color: var(--color-muted);
}

.related-articles {
    margin-top: 14px;
    display: grid;
    gap: 10px;
}

.related-article {
    display: grid;
    gap: 4px;
    padding: 12px 0;
    border-bottom: 1px solid var(--color-line);
}

.related-article:last-child {
    border-bottom: 0;
}

.related-article span {
    color: var(--color-blue);
    font-size: 12px;
    font-weight: 800;
}

.related-article strong {
    color: var(--color-navy);
    line-height: 1.5;
}

.contact-panel {
    background: #fff;
    border-color: #cfddeb;
    box-shadow: 0 16px 38px rgba(8, 36, 77, 0.1);
}

.article-page .cta-section {
    background:
        linear-gradient(135deg, rgba(25, 100, 160, 0.96), rgba(43, 145, 209, 0.92)),
        linear-gradient(90deg, rgba(255, 255, 255, 0.14) 1px, transparent 1px);
    background-size: auto, 34px 34px;
}

@media (max-width: 1080px) {
    .global-nav-inner {
        justify-content: flex-start;
        overflow-x: auto;
        -ms-overflow-style: none;
        scrollbar-width: none;
    }

    .global-nav-inner::-webkit-scrollbar {
        display: none;
    }

    .global-nav a,
    .nav-parent,
    .nav-dropdown {
        flex: 0 0 auto;
    }

    .hero-grid,
    .featured-card,
    .article-hero-inner,
    .article-detail-layout,
    .cta-inner {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: auto;
        justify-content: flex-start;
    }

    .hero-visual img {
        max-width: 420px;
    }

    .category-filter,
    .article-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .article-detail-sidebar {
        order: -1;
    }

    .side-panel {
        position: static;
    }
}

@media (max-width: 720px) {
    .container {
        width: min(100% - 28px, var(--container-width));
    }

    .site-header {
        margin-top: -2px;
        padding-top: 2px;
        background: #303e5c;
        box-shadow: 0 -2px 0 #303e5c;
    }

    .site-header-main {
        background: #303e5c;
        border-bottom: 1px solid rgba(17, 27, 48, 0.42);
    }

    .site-header-main-inner {
        min-height: 42px;
        gap: 12px;
    }

    .official-logo img {
        width: 77px;
        max-height: 22px;
    }

    .header-contact,
    .header-phone {
        display: none;
    }

    .header-inquiry {
        padding: 7px 11px;
        font-size: 12px;
    }

    .nav-toggle {
        display: inline-flex;
        width: 31px;
        height: 28px;
        gap: 4px;
        color: #c5cfe5;
        background: transparent;
        border-color: rgba(197, 207, 229, 0.72);
        border-radius: 4px;
    }

    .nav-toggle span {
        width: 16px;
        background: currentColor;
    }

    .nav-toggle:hover,
    .nav-toggle:focus {
        background: rgba(197, 207, 229, 0.12);
        border-color: #c5cfe5;
    }

    .nav-toggle[aria-expanded="true"] {
        background: rgba(197, 207, 229, 0.12);
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(1) {
        transform: none;
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(2) {
        opacity: 1;
    }

    .nav-toggle[aria-expanded="true"] span:nth-child(3) {
        transform: none;
    }

    .global-nav {
        display: none;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
        background: #303e5c;
    }

    .global-nav.is-open {
        display: block;
    }

    .global-nav-inner {
        width: 100%;
        max-width: none;
        min-height: auto;
        display: block;
        align-items: stretch;
        padding: 0;
        overflow: visible;
    }

    .global-nav a,
    .nav-parent {
        width: 100%;
        min-height: 29px;
        justify-content: flex-start;
        gap: 5px;
        padding: 0 12px;
        border-left: 0;
        border-bottom: 0;
        font-size: 11px;
        font-weight: 800;
        text-align: left;
    }

    .global-nav-inner > a:last-child {
        border-right: 0;
    }

    .global-nav-inner > a::before,
    .nav-parent::before {
        content: "";
        display: inline-flex;
        flex: 0 0 10px;
        align-items: center;
        justify-content: center;
        width: 10px;
        height: 10px;
        color: currentColor;
        font-size: 7px;
        font-weight: 900;
        line-height: 1;
        opacity: 0.94;
    }

    .global-nav-inner > a:nth-of-type(1)::before {
        content: "i";
        border: 1px solid currentColor;
        border-radius: 50%;
        font-family: Arial, sans-serif;
    }

    .nav-parent::before {
        background: currentColor;
        clip-path: polygon(50% 0, 100% 34%, 84% 34%, 84% 100%, 16% 100%, 16% 34%, 0 34%);
    }

    .global-nav-inner > a:nth-of-type(2)::before {
        border: 1px solid currentColor;
        box-shadow: inset 0 3px 0 currentColor;
    }

    .global-nav-inner > a:nth-of-type(3)::before {
        width: 9px;
        height: 9px;
        border-radius: 50%;
        background: currentColor;
        box-shadow: 0 4px 0 -2px currentColor;
    }

    .global-nav-inner > a:nth-of-type(4)::before {
        height: 8px;
        background: currentColor;
        border-radius: 50% 50% 50% 2px;
    }

    .global-nav-inner > a:nth-of-type(5)::before {
        content: "?";
        border: 1px solid currentColor;
        border-radius: 50%;
        font-family: Arial, sans-serif;
    }

    .global-nav a:hover,
    .global-nav a:focus,
    .nav-parent:hover,
    .nav-parent:focus,
    .nav-dropdown.is-open .nav-parent,
    .nav-parent[aria-expanded="true"] {
        background: #24365a;
    }

    .global-nav a[aria-current="page"] {
        background: #1b2740;
    }

    .nav-dropdown {
        display: block;
        width: 100%;
    }

    .nav-dropdown-menu {
        position: static;
        display: none;
        width: 100%;
        padding: 0;
        opacity: 1;
        pointer-events: auto;
        transform: none;
        color: #fff;
        background: #253858;
        border-top: 0;
        box-shadow: none;
    }

    .nav-dropdown.is-open .nav-dropdown-menu {
        display: grid;
    }

    .nav-dropdown-menu a {
        min-height: 31px;
        display: flex;
        align-items: center;
        padding: 0 12px 0 27px;
        color: rgba(255, 255, 255, 0.92);
        background: transparent;
        border-bottom: 0;
        font-size: 11px;
    }

    .nav-dropdown-menu a::before {
        content: "";
        flex: 0 0 5px;
        width: 5px;
        height: 5px;
        margin-right: 8px;
        background: currentColor;
        border-radius: 50%;
        opacity: 0.72;
    }

    .nav-dropdown-menu a:hover,
    .nav-dropdown-menu a:focus {
        color: #fff;
        background: rgba(255, 255, 255, 0.1);
    }

    .nav-parent::after {
        margin-left: 0;
        border-right-width: 3px;
        border-left-width: 3px;
        border-top-width: 4px;
    }

    .blog-hero {
        padding: 54px 0 50px;
    }

    .hero-copy h1 {
        font-size: 32px;
    }

    .hero-lead {
        font-size: 15px;
        max-width: 330px;
        word-break: break-all;
    }

    .section-heading p:not(.eyebrow) {
        max-width: 330px;
        word-break: break-all;
    }

    .hero-actions,
    .row-heading {
        align-items: stretch;
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .section-block,
    .category-section,
    .cta-section {
        padding: 48px 0;
    }

    .category-section {
        padding: 22px 0;
    }

    .section-heading h2 {
        font-size: 25px;
    }

    .category-summary {
        gap: 12px;
        padding: 6px 0;
    }

    .category-summary h2 {
        font-size: 22px;
    }

    .category-summary-action {
        justify-content: flex-end;
    }

    .category-panel {
        padding: 6px 0 18px;
    }

    .category-panel-head {
        justify-content: flex-start;
    }

    .featured-content,
    .article-body,
    .article-content-shell,
    .article-end-panel,
    .article-hero-panel {
        padding: 20px;
    }

    .article-card .article-body {
        padding: 14px 16px 12px;
    }

    .article-card-visual {
        aspect-ratio: 16 / 8;
    }

    .article-card h3 {
        font-size: 18px;
    }

    .card-chip-group {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 7px;
    }

    .featured-visual {
        min-height: 220px;
    }

    .category-filter,
    .article-grid,
    .article-learning-box,
    .article-end {
        grid-template-columns: 1fr;
    }

    .category-filter a {
        min-height: 56px;
    }

    .article-detail-hero {
        padding: 38px 0;
        overflow-x: hidden;
    }

    .article-hero-copy,
    .article-hero-panel,
    .article-learning-box,
    .article-summary,
    .article-tags {
        width: 100%;
        max-width: calc(100vw - 28px);
        min-width: 0;
    }

    .article-hero-copy h1 {
        width: 100%;
        max-width: 100%;
        font-size: 26px;
        word-break: break-all;
    }

    .article-summary {
        font-size: 15px;
        word-break: break-all;
    }

    .article-detail-layout {
        padding: 28px 0 52px;
    }

    .article-content h2 {
        padding: 12px 14px 12px 16px;
        font-size: 22px;
    }

    .article-content h3 {
        font-size: 18px;
    }

    .footer-layout {
        grid-template-columns: 1fr;
        gap: 26px;
    }

    .footer-links {
        justify-items: start;
    }

    .copyright {
        width: min(100% - 28px, var(--container-width));
        text-align: left;
    }
}