:root {
  --c-navy: #0b2a4a; --c-navy-2: #123c6b; --c-accent: #c9a227; --c-text: #1f2933;
  --c-muted: #5b6b7b; --c-bg: #fff; --c-bg-alt: #f4f6f9; --c-line: #dde3ea;
  --radius: 8px; --container: 1120px; --shadow: 0 12px 32px rgba(11, 42, 74, .08);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--c-bg); color: var(--c-text); font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic UI", system-ui, sans-serif; line-height: 1.8; -webkit-font-smoothing: antialiased; }
a { color: var(--c-navy-2); } img { max-width: 100%; height: auto; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; } .container--narrow { max-width: 800px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.skip-link { position: absolute; left: -999px; z-index: 100; } .skip-link:focus { top: 8px; left: 8px; padding: 8px 12px; border: 2px solid var(--c-accent); background: #fff; color: var(--c-navy); }
.hp { position: absolute; left: -9999px; opacity: 0; }
.site-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--c-line); background: rgba(255, 255, 255, .97); }
.site-header__inner { display: flex; align-items: center; gap: 28px; min-height: 78px; } .site-logo img { display: block; width: auto; height: 48px; }
.global-nav { margin-left: auto; } .global-nav ul { display: flex; gap: 25px; margin: 0; padding: 0; list-style: none; }
.global-nav a { color: var(--c-text); font-size: 14px; font-weight: 600; text-decoration: none; } .global-nav .is-current a { padding-bottom: 5px; border-bottom: 2px solid var(--c-accent); color: var(--c-navy-2); }
.nav-toggle { display: none; width: 42px; padding: 8px; border: 0; background: none; cursor: pointer; } .nav-toggle__line { display: block; height: 2px; margin: 5px 0; background: var(--c-navy); }
.btn { display: inline-block; padding: 11px 22px; border: 2px solid transparent; border-radius: var(--radius); font-weight: 700; text-decoration: none; transition: background-color .2s ease, border-color .2s ease, transform .2s ease; } .btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--c-navy); color: #fff; } .btn--primary:hover { background: var(--c-navy-2); } .btn--accent { background: var(--c-accent); color: #172b3e; } .btn--accent:hover { background: #e0bb3a; }
.btn--outline { border-color: var(--c-navy); background: #fff; color: var(--c-navy); } .btn--ghost-light { border-color: rgba(255, 255, 255, .65); color: #fff; } .text-link { color: var(--c-navy); font-weight: 700; text-decoration: none; }
.hero { overflow: hidden; background: linear-gradient(120deg, var(--c-navy), #174d80); color: #fff; } .hero__inner { display: flex; align-items: center; min-height: 570px; gap: 40px; } .hero__copy { position: relative; z-index: 1; flex: 1; }
.hero__eyebrow, .section-heading__eyebrow { margin: 0 0 10px; color: var(--c-accent); font-size: 12px; font-weight: 800; letter-spacing: .15em; } .hero__title { margin: 0 0 22px; font-size: clamp(30px, 4.2vw, 52px); line-height: 1.35; letter-spacing: .02em; } .hero__lead { max-width: 650px; margin: 0; font-size: 16px; opacity: .93; } .hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-diagram { position: relative; flex: 0 0 410px; width: 410px; height: 410px; } .hero-diagram__orbit { position: absolute; inset: 18%; border: 1px solid rgba(255, 255, 255, .35); border-radius: 50%; transform: rotate(-25deg) scaleX(1.45); } .hero-diagram__orbit--inner { inset: 28%; border-color: rgba(201, 162, 39, .7); transform: rotate(55deg) scaleX(1.45); }
.hero-diagram__core { position: absolute; inset: 36%; display: grid; place-content: center; border: 1px solid var(--c-accent); border-radius: 50%; background: rgba(11, 42, 74, .7); font-size: 21px; line-height: 1.2; text-align: center; letter-spacing: .08em; } .hero-diagram__core small { color: var(--c-accent); font-size: 8px; letter-spacing: .2em; }
.hero-diagram__label { position: absolute; color: rgba(255, 255, 255, .78); font-size: 11px; letter-spacing: .2em; } .hero-diagram__label--top { top: 10%; left: 45%; } .hero-diagram__label--right { top: 49%; right: 1%; } .hero-diagram__label--bottom { bottom: 9%; left: 41%; }
.section { padding: 88px 0; } .section--alt { background: var(--c-bg-alt); } .section__title, .page-title { margin: 0 0 32px; color: var(--c-navy); font-size: clamp(25px, 3vw, 34px); line-height: 1.4; letter-spacing: .02em; } .section-heading { margin-bottom: 34px; } .section-heading__lead { max-width: 620px; margin: 0; color: var(--c-muted); } .section-heading--row { display: flex; align-items: end; justify-content: space-between; gap: 24px; } .section-heading--row .section__title { margin-bottom: 0; }
.problem-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 0; padding: 0; list-style: none; } .problem-list li { display: flex; align-items: flex-start; gap: 16px; padding: 22px; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; box-shadow: 0 3px 12px rgba(11, 42, 74, .03); } .problem-list img { flex: 0 0 42px; } .problem-list span { color: var(--c-muted); font-size: 14px; } .problem-list strong { display: block; margin-bottom: 4px; color: var(--c-navy); font-size: 16px; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; } .card { display: block; padding: 25px; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; color: inherit; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; } .card:hover { border-color: var(--c-navy-2); box-shadow: var(--shadow); transform: translateY(-3px); } .service-card { display: flex; flex-direction: column; min-height: 265px; }
.service-card__number, .feature__index, .steps__number { color: var(--c-accent); font-size: 12px; font-weight: 800; letter-spacing: .12em; } .card__title { margin: 18px 0 10px; color: var(--c-navy); font-size: 17px; line-height: 1.55; } .card__text { margin: 0; color: var(--c-muted); font-size: 14px; line-height: 1.75; } .card__arrow { margin-top: auto; padding-top: 20px; color: var(--c-navy-2); font-size: 13px; font-weight: 700; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px; } .feature { padding-top: 20px; border-top: 2px solid var(--c-navy); } .feature h3 { margin: 12px 0 8px; color: var(--c-navy); font-size: 19px; } .feature p { margin: 0; color: var(--c-muted); font-size: 14px; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 0; padding: 0; list-style: none; } .steps li { position: relative; display: flex; flex-direction: column; gap: 7px; min-height: 110px; padding: 20px 16px; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; } .steps li strong { color: var(--c-navy); font-size: 14px; } .steps li > span:last-child { color: var(--c-muted); font-size: 12px; } .steps--home li:not(:last-child)::after { content: "→"; position: absolute; top: 43px; right: -17px; z-index: 1; color: var(--c-accent); font-weight: 800; } .column-teaser { padding-bottom: 86px; }
.cta { padding: 65px 0; background: var(--c-navy); color: #fff; } .cta h2 { margin: 0 0 12px; color: #fff; font-size: 28px; } .cta p { max-width: 640px; margin: 0; color: #d9e3ec; } .cta__grid { display: flex; align-items: center; justify-content: space-between; gap: 40px; } .cta__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px; min-width: 300px; }
.service-detail__lead { max-width: 700px; margin: 0 0 48px; font-size: 19px; } .detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } .detail-panel { padding: 30px; border: 1px solid var(--c-line); border-radius: var(--radius); background: var(--c-bg-alt); } .detail-panel--navy { border-color: var(--c-navy); background: var(--c-navy); color: #fff; } .detail-panel h2, .detail-flow h2, .detail-faq h2, .detail-column h2 { margin: 0 0 22px; color: var(--c-navy); font-size: 23px; } .detail-panel--navy h2 { color: #fff; } .check-list { display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; } .check-list li { position: relative; padding-left: 26px; font-size: 14px; } .check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--c-accent); font-weight: 800; } .detail-flow { margin-top: 65px; } .detail-flow .steps { grid-template-columns: repeat(5, 1fr); } .detail-faq, .detail-column { margin-top: 72px; } .detail-cta { margin: 40px 0 0; }
.article-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 40px 0 0; padding: 0; list-style: none; } .article-list__item a { display: flex; flex-direction: column; height: 100%; padding: 22px; border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; color: inherit; text-decoration: none; transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease; } .article-list__item a:hover { border-color: var(--c-navy-2); box-shadow: var(--shadow); transform: translateY(-3px); } .article-list__item img { width: calc(100% + 44px); height: 150px; margin: -22px -22px 18px; object-fit: cover; } .article-list__item > a > div { display: flex; flex: 1; flex-direction: column; } .article-list__item h2, .article-list__item h3 { margin: 6px 0 10px; color: var(--c-navy); font-size: 18px; line-height: 1.5; } .article-list__item > a > div > p:last-child { margin: 0; color: var(--c-muted); font-size: 14px; line-height: 1.75; } .article-list__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin: 0; color: var(--c-muted); font-size: 13px; } .category-label { display: inline-block; padding: 2px 9px; border-radius: 999px; background: #edf2f7; color: var(--c-navy-2); font-size: 12px; font-weight: 700; text-decoration: none; }
.category-nav { margin: 30px 0 0; padding: 8px; border: 1px solid var(--c-line); border-radius: var(--radius); background: var(--c-bg-alt); } .category-nav ul { display: flex; flex-wrap: wrap; gap: 6px; margin: 0; padding: 0; list-style: none; } .category-nav a { display: block; padding: 7px 14px; border-radius: 5px; color: var(--c-muted); font-size: 14px; text-decoration: none; } .category-nav li.is-current a, .category-nav a:hover { background: var(--c-navy); color: #fff; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 18px; color: var(--c-muted); font-size: 13px; } .article__meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin: -14px 0 24px; color: var(--c-muted); font-size: 14px; } .article__hero { display: block; width: 100%; margin: 20px 0 32px; border-radius: var(--radius); } .toc { margin: 32px 0 42px; padding: 22px 26px; border: 1px solid var(--c-line); border-left: 4px solid var(--c-accent); border-radius: var(--radius); background: var(--c-bg-alt); } .toc__title { margin: 0 0 10px; color: var(--c-navy); font-weight: 800; } .toc ol { margin: 0; padding-left: 25px; } .toc li { padding: 3px 0; } .toc a { text-decoration: none; }
.article__body { font-size: 16px; line-height: 1.85; } .article__body h2 { margin: 52px 0 18px; padding: 5px 0 5px 14px; border-left: 4px solid var(--c-accent); color: var(--c-navy); font-size: 25px; line-height: 1.5; } .article__body h3 { margin: 34px 0 12px; color: var(--c-navy); font-size: 20px; line-height: 1.55; } .article__body p { margin: 0 0 1.4em; } .article__body ul, .article__body ol { margin: 0 0 1.4em; padding-left: 1.6em; } .article__body li + li { margin-top: .35em; } .article__body strong { color: var(--c-navy); font-weight: 800; } .article__body a { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.table-wrap { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; } .article__body table, .company-table { width: 100%; min-width: 560px; margin: 26px 0 30px; border-collapse: collapse; font-size: 15px; } .article__body th, .article__body td, .company-table th, .company-table td { padding: 13px 15px; border: 1px solid var(--c-line); text-align: left; vertical-align: top; } .article__body th, .company-table th { background: var(--c-bg-alt); color: var(--c-navy); font-weight: 700; } .company-table { margin-top: 35px; } .company-table th { width: 30%; } .company-table ul { margin: 0; padding-left: 20px; } .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 30px 0 0; padding: 0; list-style: none; } .tag-list a { display: block; padding: 4px 10px; border-radius: 999px; background: var(--c-bg-alt); font-size: 13px; text-decoration: none; } .related { margin-top: 72px; padding-top: 42px; border-top: 1px solid var(--c-line); } .related__title { margin: 0; color: var(--c-navy); font-size: 25px; } .related .article-list { margin-top: 24px; grid-template-columns: 1fr; } .related .article-list__item a { display: grid; grid-template-columns: 160px 1fr; gap: 18px; padding: 16px; } .related .article-list__item img { width: 160px; height: 90px; margin: 0; } .related .article-list__item h3 { margin-top: 0; }
.faq-list { display: grid; gap: 10px; } .faq { border: 1px solid var(--c-line); border-radius: var(--radius); background: #fff; } .faq summary { position: relative; padding: 18px 52px 18px 20px; color: var(--c-navy); font-weight: 700; cursor: pointer; list-style: none; } .faq summary::-webkit-details-marker { display: none; } .faq summary::after { content: "+"; position: absolute; top: 50%; right: 20px; color: var(--c-navy-2); font-size: 22px; line-height: 1; transform: translateY(-50%); } .faq[open] summary::after { content: "−"; } .faq p { margin: 0; padding: 0 20px 20px; color: var(--c-muted); font-size: 15px; } .faq summary:focus-visible { outline: 3px solid var(--c-accent); outline-offset: -3px; }
.contact-form { display: grid; gap: 18px; margin-top: 30px; } .contact-form label { display: grid; gap: 6px; font-size: 14px; font-weight: 600; } .contact-form input, .contact-form select, .contact-form textarea { padding: 12px 14px; border: 1px solid #aebbc7; border-radius: 6px; background: #fff; color: var(--c-text); font: inherit; } .contact-form input:focus, .contact-form select:focus, .contact-form textarea:focus { outline: 3px solid rgba(201, 162, 39, .45); outline-offset: 1px; } .req { margin-left: 5px; padding: 1px 6px; border-radius: 4px; background: #a12622; color: #fff; font-size: 11px; } .notice { padding: 16px; border-radius: var(--radius); } .notice--success { background: #e8f5ec; color: #1e6b3a; } .notice--error { background: #fdecea; color: #a12622; } .form-note { color: var(--c-muted); font-size: 13px; }
.site-footer { padding: 55px 0 24px; background: #081c31; color: #c8d3de; font-size: 14px; } .site-footer a { color: #fff; text-decoration: none; } .site-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; } .site-footer__nav ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; } .site-footer__company img { padding: 6px; border-radius: 4px; background: #fff; } .site-footer__copyright { margin-top: 36px; opacity: .7; font-size: 12px; }
:focus-visible { outline: 3px solid var(--c-accent); outline-offset: 3px; }
@media (max-width: 980px) { .global-nav ul { gap: 14px; } .site-header__inner { gap: 16px; } .card-grid { grid-template-columns: repeat(2, 1fr); } .hero-diagram { flex-basis: 340px; width: 340px; height: 340px; } .detail-flow .steps { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 820px) { .site-header__inner { min-height: 68px; } .site-header__cta { margin-left: auto; padding: 8px 13px; font-size: 13px; } .nav-toggle { display: block; order: 3; } .global-nav { position: absolute; top: 68px; right: 0; left: 0; display: none; padding: 8px 24px; border-bottom: 1px solid var(--c-line); background: #fff; box-shadow: var(--shadow); } .global-nav.is-open { display: block; } .global-nav ul { display: grid; gap: 0; } .global-nav li { border-bottom: 1px solid var(--c-line); } .global-nav a { display: block; padding: 13px 0; } .hero__inner { min-height: 0; padding-top: 70px; padding-bottom: 70px; } .hero-diagram { display: none; } .section { padding: 64px 0; } .problem-list, .detail-grid { grid-template-columns: 1fr; } .feature-grid { grid-template-columns: 1fr; gap: 30px; } .steps, .detail-flow .steps { grid-template-columns: 1fr; } .steps--home li:not(:last-child)::after { top: auto; right: auto; bottom: -20px; left: 50%; content: "↓"; } .steps li { min-height: auto; } .section-heading--row, .cta__grid { display: block; } .section-heading--row .btn, .section-heading--row .text-link { display: inline-block; margin-top: 20px; } .cta__actions { justify-content: flex-start; min-width: 0; margin-top: 25px; } .article-list { grid-template-columns: 1fr 1fr; } .article-list__item img { height: 130px; } .related .article-list { grid-template-columns: 1fr; } .company-table th, .company-table td { display: block; width: auto; } .company-table th { padding-bottom: 5px; border-bottom: 0; } .company-table td { padding-top: 5px; } .hero__title { font-size: 34px; } }
@media (max-width: 480px) { .container { padding-right: 18px; padding-left: 18px; } .site-logo img { height: 42px; } .site-header__cta { padding: 7px 10px; font-size: 12px; } .global-nav { padding-right: 18px; padding-left: 18px; } .section { padding: 52px 0; } .section__title, .page-title { margin-bottom: 24px; } .hero__inner { padding-top: 54px; padding-bottom: 58px; } .hero__title { font-size: 30px; } .hero__lead { font-size: 15px; } .hero__actions .btn { width: 100%; text-align: center; } .card-grid, .article-list { grid-template-columns: 1fr; } .card { padding: 22px; } .article-list__item a { padding: 18px; } .article-list__item img { width: calc(100% + 36px); height: auto; margin: -18px -18px 16px; } .category-nav { padding: 6px; } .category-nav a { padding: 7px 10px; font-size: 13px; } .toc { padding: 18px 20px; } .article__body { font-size: 16px; } .article__body h2 { margin-top: 40px; font-size: 22px; } .article__body h3 { font-size: 18px; } .article__meta { align-items: flex-start; flex-direction: column; gap: 5px; } .related .article-list__item a { display: flex; } .related .article-list__item img { width: calc(100% + 36px); height: auto; margin: -18px -18px 16px; } .faq summary { padding-right: 44px; padding-left: 16px; } .faq p { padding-right: 16px; padding-left: 16px; } .detail-panel { padding: 22px; } .cta { padding: 52px 0; } .cta h2 { font-size: 24px; } .cta__actions .btn { width: 100%; text-align: center; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn, .card, .article-list__item a { transition: none; } .btn:hover, .card:hover, .article-list__item a:hover { transform: none; } }