/* Storage Biz Theme — mobile-first, BEM-style components */
:root {
  --color-main: #374151;
  --color-main-dark: #1f2937;
  --color-sub: #f9fafb;
  --color-accent: #d97706;
  --color-accent-dark: #b45309;
  --color-text: #111827;
  --color-muted: #6b7280;
  --color-border: #d1d5db;
  --color-white: #fff;
  --font-heading: "Noto Sans JP", "Yu Gothic", sans-serif;
  --font-body: "Noto Sans JP", "Hiragino Sans", sans-serif;
  --font-number: "Roboto", "Arial", sans-serif;
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --radius: 4px;
  --shadow: 0 8px 24px rgba(17, 24, 39, .08);
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--color-white); color: var(--color-text); font-family: var(--font-body); font-size: 1rem; line-height: 1.8; }
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--color-main); text-decoration-thickness: 1px; text-underline-offset: .2em; }
a:hover { color: var(--color-accent-dark); }
button, input, textarea, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #f59e0b; outline-offset: 3px; }
.container { width: min(100% - 2rem, var(--container)); margin-inline: auto; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.screen-reader-text:focus { top: 1rem; left: 1rem; z-index: 10000; width: auto; height: auto; padding: .75rem 1rem; clip: auto; background: #fff; color: #111827; font-weight: 700; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: .75rem; min-height: 48px; padding: .7rem 1.25rem; border: 2px solid var(--color-accent); border-radius: var(--radius); background: var(--color-accent); color: #fff; font-family: var(--font-heading); font-weight: 700; line-height: 1.3; text-decoration: none; transition: background-color .2s, border-color .2s, transform .2s; }
.button:hover { background: var(--color-accent-dark); border-color: var(--color-accent-dark); color: #fff; transform: translateY(-1px); }
.button--small { min-height: 40px; padding: .45rem 1rem; font-size: .9rem; }

.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--color-border); background: rgba(255,255,255,.98); }
.site-header__inner { display: flex; min-height: 68px; align-items: center; justify-content: space-between; }
.custom-logo { width: auto; max-height: 48px; }
.site-branding__text { display: inline-flex; align-items: center; gap: .65rem; color: var(--color-main-dark); font-family: var(--font-heading); font-size: 1.05rem; font-weight: 700; letter-spacing: .03em; text-decoration: none; }
.site-branding__mark { display: grid; width: 38px; height: 38px; place-items: center; background: var(--color-main); color: #fff; font-family: var(--font-number); font-size: .8rem; letter-spacing: .06em; }
.menu-toggle { display: inline-flex; min-width: 48px; min-height: 48px; align-items: center; justify-content: center; border: 0; background: transparent; color: var(--color-main); cursor: pointer; }
.menu-toggle__label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.menu-toggle__icon { display: grid; gap: 5px; width: 26px; }
.menu-toggle__icon span { display: block; height: 2px; background: currentColor; transition: transform .2s, opacity .2s; }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] .menu-toggle__icon span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.site-nav { position: fixed; inset: 69px 0 0; display: none; padding: 1rem; overflow-y: auto; background: #fff; }
.site-nav.is-open { display: block; }
.site-nav__list { margin: 0 0 1rem; padding: 0; list-style: none; }
.site-nav__list li { border-bottom: 1px solid var(--color-border); }
.site-nav__list a { display: block; padding: .9rem .4rem; color: var(--color-text); font-weight: 700; text-decoration: none; }
.site-nav__list .sub-menu { padding-left: 1rem; list-style: none; }
.site-nav__cta { width: 100%; }

.breadcrumb { border-bottom: 1px solid #e5e7eb; background: var(--color-sub); font-size: .78rem; }
.breadcrumb__list { display: flex; margin: 0; padding: .65rem 0; overflow-x: auto; list-style: none; white-space: nowrap; }
.breadcrumb__item { display: flex; align-items: center; color: var(--color-muted); }
.breadcrumb__item:not(:last-child)::after { margin: 0 .65rem; content: "/"; color: #9ca3af; }
.breadcrumb__item a { color: var(--color-main); text-decoration: none; }

.hero { position: relative; overflow: hidden; min-height: 490px; background-color: var(--color-main-dark); background-image: linear-gradient(135deg, rgba(255,255,255,.035) 25%, transparent 25%), linear-gradient(225deg, rgba(255,255,255,.035) 25%, transparent 25%), linear-gradient(45deg, rgba(255,255,255,.035) 25%, transparent 25%), linear-gradient(315deg, rgba(255,255,255,.035) 25%, #1f2937 25%); background-repeat: no-repeat; background-position: 72% center; background-size: cover; color: #fff; }
.hero::after { position: absolute; right: -5%; bottom: -1px; width: 55%; height: 65%; border: 1px solid rgba(255,255,255,.1); content: ""; clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%); background: rgba(255,255,255,.025); }
.hero__inner { position: relative; z-index: 1; display: flex; min-height: 490px; flex-direction: column; align-items: flex-start; justify-content: center; padding-block: 4rem; }
.hero__eyebrow, .section-heading__en { margin: 0 0 .75rem; color: var(--color-accent); font-family: var(--font-number); font-size: .75rem; font-weight: 700; letter-spacing: .16em; }
.hero__title { max-width: 780px; margin: 0; font-family: var(--font-heading); font-size: clamp(2rem, 8vw, 4rem); font-weight: 700; letter-spacing: .01em; line-height: 1.35; }
.hero__subtitle { max-width: 680px; margin: 1.25rem 0 1.75rem; color: #e5e7eb; font-size: 1rem; }
.button--hero { min-height: 54px; padding-inline: 1.5rem; }

.section { padding-block: var(--space-7); }
.section--categories, .section--featured { background: var(--color-sub); }
.section--about { background: #fff; }
.section--cta { padding-top: 0; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem; margin-bottom: 1.5rem; }
.section-heading .section-title { margin-bottom: 0; }
.section-title, .entry-content h2, .article-faq > h2 { position: relative; margin: 0 0 1.5rem; padding-left: 1rem; color: var(--color-main-dark); font-family: var(--font-heading); font-size: clamp(1.35rem, 4vw, 1.85rem); font-weight: 700; line-height: 1.45; }
.section-title::before, .entry-content h2::before, .article-faq > h2::before { position: absolute; inset: .12em auto .12em 0; width: 6px; background: var(--color-main); content: ""; }
.text-link { flex: none; font-size: .85rem; font-weight: 700; text-decoration: none; }

.post-grid { display: grid; gap: 1.25rem; }
.post-card { overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; box-shadow: 0 3px 10px rgba(17,24,39,.04); transition: box-shadow .2s, transform .2s; }
.post-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.post-card__image { display: block; overflow: hidden; aspect-ratio: 16 / 9; background: #e5e7eb; }
.post-card__thumbnail { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.post-card:hover .post-card__thumbnail { transform: scale(1.025); }
.post-card__placeholder { display: grid; width: 100%; height: 100%; place-items: center; background: linear-gradient(135deg,#4b5563,#1f2937); color: rgba(255,255,255,.65); font-family: var(--font-number); font-size: .7rem; letter-spacing: .18em; }
.post-card__body { padding: 1rem; }
.post-card__category, .article__category { display: inline-block; margin-bottom: .55rem; color: var(--color-accent-dark); font-size: .72rem; font-weight: 700; text-decoration: none; }
.post-card__title { margin: 0 0 .65rem; font-family: var(--font-heading); font-size: 1.04rem; line-height: 1.55; }
.post-card__title a { color: var(--color-text); text-decoration: none; }
.post-card__excerpt { margin: 0 0 .8rem; color: #4b5563; font-size: .86rem; line-height: 1.7; }
.post-card__meta { display: flex; justify-content: space-between; border-top: 1px solid #e5e7eb; padding-top: .65rem; color: var(--color-muted); font-family: var(--font-number); font-size: .72rem; }
.empty-state { grid-column: 1 / -1; padding: 2rem; border: 1px dashed var(--color-border); background: #fff; color: var(--color-muted); text-align: center; }

.category-grid { display: grid; gap: .75rem; }
.category-card { display: flex; min-height: 90px; align-items: center; gap: 1rem; padding: 1rem; border: 1px solid var(--color-border); border-radius: var(--radius); background: #fff; color: var(--color-text); text-decoration: none; transition: border-color .2s, box-shadow .2s; }
.category-card:hover { border-color: var(--color-main); box-shadow: 0 4px 12px rgba(17,24,39,.07); color: var(--color-text); }
.category-card__icon { width: 30px; height: 24px; flex: 0 0 auto; border: 3px solid var(--color-main); box-shadow: 7px -7px 0 -4px #fff, 7px -7px 0 -1px #6b7280; }
.category-card__body { display: grid; min-width: 0; gap: .1rem; }
.category-card__body strong { font-family: var(--font-heading); }
.category-card__body span { color: var(--color-muted); font-family: var(--font-number); font-size: .7rem; }
.category-card__arrow { margin-left: auto; color: var(--color-accent); }

.about-panel { position: relative; display: grid; gap: 1.5rem; padding-block: 2rem; }
.about-panel__number { color: #e5e7eb; font-family: var(--font-number); font-size: 5rem; font-weight: 700; line-height: 1; }
.about-panel__content > p:last-child { max-width: 760px; margin: 0; color: #4b5563; }
.cta-box { display: grid; gap: 1.25rem; padding: 1.5rem; border-left: 6px solid var(--color-accent); background: var(--color-main-dark); color: #fff; }
.cta-box__title { margin: 0 0 .5rem; color: #fff; font-family: var(--font-heading); font-size: 1.25rem; line-height: 1.5; }
.cta-box p { margin: 0; color: #d1d5db; font-size: .9rem; }
.cta-box__button { align-self: center; }

.page-main { padding-bottom: var(--space-7); }
.content-layout { display: grid; gap: 2.5rem; padding-top: 2rem; }
.content-layout--wide { grid-template-columns: minmax(0, 1fr); }
.content-primary { min-width: 0; }
.archive-header { margin-bottom: 1.5rem; padding-bottom: 1.5rem; border-bottom: 2px solid var(--color-main); }
.archive-header p, .archive-header__description { color: var(--color-muted); }
.page-title, .article__title { margin: 0 0 .8rem; color: var(--color-main-dark); font-family: var(--font-heading); font-size: clamp(1.75rem, 6vw, 2.6rem); line-height: 1.4; }
.article__title { font-size: clamp(1.6rem, 4.2vw, 2.2rem); line-height: 1.5; }
.nav-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .4rem; margin-top: 2rem; }
.page-numbers { display: grid; min-width: 42px; min-height: 42px; place-items: center; padding: .25rem .65rem; border: 1px solid var(--color-border); color: var(--color-main); text-decoration: none; }
.page-numbers.current, .page-numbers:hover { border-color: var(--color-main); background: var(--color-main); color: #fff; }

.sidebar { display: grid; align-content: start; gap: 1.25rem; }
.sidebar-widget { padding: 1.2rem; border: 1px solid var(--color-border); background: #fff; }
.sidebar-widget__title { margin: 0 0 1rem; padding-bottom: .65rem; border-bottom: 3px solid var(--color-main); font-family: var(--font-heading); font-size: 1.05rem; }
.sidebar-posts, .sidebar-ranking, .category-list { margin: 0; padding: 0; list-style: none; }
.sidebar-posts li, .sidebar-ranking li, .category-list li { padding: .75rem 0; border-bottom: 1px solid #e5e7eb; font-size: .86rem; line-height: 1.55; }
.sidebar-posts li:last-child, .sidebar-ranking li:last-child, .category-list li:last-child { border-bottom: 0; }
.sidebar-posts a, .sidebar-ranking a, .category-list a { color: var(--color-text); font-weight: 700; text-decoration: none; }
.sidebar-posts time { display: block; margin-top: .25rem; color: var(--color-muted); font-family: var(--font-number); font-size: .68rem; }
.sidebar-ranking { counter-reset: ranking; }
.sidebar-ranking li { display: grid; grid-template-columns: 28px 1fr; gap: .65rem; }
.sidebar-ranking li::before { display: grid; width: 26px; height: 26px; place-items: center; background: var(--color-main); color: #fff; content: counter(ranking); counter-increment: ranking; font-family: var(--font-number); font-size: .7rem; }
.category-list li { display: flex; justify-content: space-between; }
.search-form { display: flex; }
.search-form__input { min-width: 0; flex: 1; min-height: 44px; padding: .55rem .75rem; border: 1px solid var(--color-border); border-radius: 0; background: #fff; color: var(--color-text); }
.search-form__button { min-height: 44px; padding: .5rem 1rem; border: 1px solid var(--color-main); background: var(--color-main); color: #fff; font-weight: 700; cursor: pointer; }
.search-page-form { max-width: 620px; margin-bottom: 2rem; }

.article__header { margin-bottom: 1.5rem; }
.article__meta { display: flex; flex-wrap: wrap; gap: .4rem 1rem; color: var(--color-muted); font-family: var(--font-number); font-size: .75rem; }
.article__eyecatch { margin: 0 0 2rem; }
.article__eyecatch img { width: 100%; }
.entry-content { font-size: 1rem; }
.entry-content > *:first-child { margin-top: 0; }
.entry-content p { margin: 0 0 1.5em; }
.entry-content h2 { margin-top: 2.8em; padding-top: .1em; scroll-margin-top: 100px; }
.entry-content h3 { margin: 2.2em 0 1em; padding-bottom: .5em; border-bottom: 2px solid var(--color-border); color: var(--color-main-dark); font-family: var(--font-heading); font-size: 1.25rem; scroll-margin-top: 100px; }
.entry-content h4 { margin-top: 2em; color: var(--color-main); font-family: var(--font-heading); }
.entry-content ul, .entry-content ol { margin: 0 0 1.5rem; padding-left: 1.5rem; }
.entry-content li { margin-bottom: .4rem; }
.entry-content .sb-list-box,
.sb-column-content > ul { margin: 2rem 0; border: 1px solid var(--color-border); border-left: 6px solid var(--color-main); background: var(--color-sub); }
.entry-content .sb-list-box { padding: 1.25rem 1.4rem; }
.sb-column-content > ul { padding: 1.25rem 1.4rem 1.25rem 2.75rem; }
.entry-content .sb-list-box ul { margin: 0; padding-left: 1.35rem; }
.entry-content .sb-list-box li,
.sb-column-content > ul > li { margin-bottom: .75rem; padding-left: .15rem; }
.entry-content .sb-list-box li:last-child,
.sb-column-content > ul > li:last-child { margin-bottom: 0; }
.entry-content .sb-list-box li::marker,
.sb-column-content > ul > li::marker { color: var(--color-accent); }
.sb-column-content .sb-cta { display: none !important; }
.entry-content blockquote { margin: 2rem 0; padding: 1rem 1.25rem; border-left: 5px solid var(--color-main); background: var(--color-sub); color: #4b5563; }
.entry-content table { width: 100%; margin: 2rem 0; border-collapse: collapse; font-family: var(--font-number); font-variant-numeric: tabular-nums; }
.entry-content th, .entry-content td { padding: .75rem; border: 1px solid #9ca3af; text-align: left; }
.entry-content th { background: var(--color-main); color: #fff; font-family: var(--font-heading); }
.entry-content tr:nth-child(even) td { background: var(--color-sub); }
.entry-content .has-large-font-size, .entry-content strong { font-weight: 700; }
.entry-content pre { overflow-x: auto; padding: 1rem; background: var(--color-main-dark); color: #f9fafb; }
.entry-content figure { margin: 2rem 0; }
.entry-content figcaption { margin-top: .5rem; color: var(--color-muted); font-size: .78rem; text-align: center; }
.toc { margin-bottom: 2rem; border: 1px solid var(--color-border); background: var(--color-sub); }
.toc__toggle { display: flex; width: 100%; align-items: center; justify-content: space-between; padding: .85rem 1rem; border: 0; background: var(--color-main); color: #fff; font-family: var(--font-heading); font-weight: 700; cursor: pointer; }
.toc__body { padding: 1rem 1.25rem; }
.toc__body[hidden] { display: none; }
.toc__list { margin: 0; padding-left: 1.25rem; }
.toc__item { margin: .35rem 0; }
.toc__item--h3 { margin-left: 1rem; font-size: .9rem; }
.toc__item a { color: var(--color-main); text-decoration: none; }
.article-faq { margin-top: 3rem; }
.article-faq__item { border: 1px solid var(--color-border); border-bottom: 0; }
.article-faq__item:last-child { border-bottom: 1px solid var(--color-border); }
.article-faq__item summary { padding: 1rem; background: var(--color-sub); font-weight: 700; cursor: pointer; }
.article-faq__item div { padding: 1rem; }
.article .cta-box { margin-top: 3rem; }
.author-box { display: grid; grid-template-columns: 72px 1fr; gap: 1rem; margin-top: 2rem; padding: 1.25rem; border: 1px solid var(--color-border); background: var(--color-sub); }
.author-box__avatar img { border-radius: 50%; }
.author-box__label { margin: 0; color: var(--color-muted); font-size: .72rem; }
.author-box__name { margin: .15rem 0 .45rem; font-family: var(--font-heading); font-size: 1.1rem; }
.author-box p:last-child { margin: 0; font-size: .85rem; }
.related-posts { margin-top: 3rem; }
.post-navigation { display: grid; gap: .75rem; margin-top: 2rem; }
.post-navigation > div { padding: 1rem; border: 1px solid var(--color-border); }
.post-navigation span { display: block; color: var(--color-muted); font-size: .7rem; }
.post-navigation a { color: var(--color-text); font-weight: 700; text-decoration: none; }

.error-page { max-width: 760px; padding-block: 4rem; text-align: center; }
.error-page__code { margin: 0; color: #e5e7eb; font-family: var(--font-number); font-size: clamp(5rem, 25vw, 10rem); font-weight: 700; line-height: 1; }
.error-page__search { max-width: 520px; margin: 2rem auto 1.5rem; }

.site-footer { margin-top: auto; background: var(--color-main-dark); color: #d1d5db; }
.site-footer__grid { display: grid; gap: 2rem; padding-block: 2.5rem; }
.site-footer__logo { display: inline-flex; align-items: center; color: #fff; font-family: var(--font-heading); font-size: 1.25rem; font-weight: 700; text-decoration: none; }
.site-footer__logo-image { width: auto; max-width: min(100%, 320px); max-height: 72px; object-fit: contain; object-position: left center; }
.site-footer__logo-text { color: #fff; }
.site-footer__brand p { max-width: 460px; margin: .75rem 0 0; font-size: .85rem; }
.site-footer__menu { margin: 0; padding: 0; list-style: none; }
.site-footer__menu a, .site-footer__social a, .site-footer__legal a { color: #e5e7eb; font-size: .85rem; text-decoration: none; }
.site-footer__menu a:hover, .site-footer__social a:hover, .site-footer__legal a:hover { color: #fff; text-decoration: underline; }
.site-footer__social { display: flex; gap: 1rem; }
.site-footer__bottom { padding-block: 1rem; border-top: 1px solid #4b5563; color: #9ca3af; font-family: var(--font-number); font-size: .75rem; }
.site-footer__bottom-inner { display: grid; gap: .75rem; }
.site-footer__legal ul { display: flex; flex-wrap: wrap; gap: .4rem 1rem; margin: 0; padding: 0; list-style: none; }
.site-footer__legal a { font-size: .75rem; }

@media (min-width: 640px) {
  .container { width: min(100% - 3rem, var(--container)); }
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cta-box { grid-template-columns: 1fr auto; align-items: center; padding: 2rem; }
  .post-navigation { grid-template-columns: 1fr 1fr; }
  .post-navigation__next { text-align: right; }
  .site-footer__bottom-inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
  .site-footer__legal ul { justify-content: flex-end; }
}

@media (min-width: 768px) {
  .section { padding-block: var(--space-8); }
  .post-grid { gap: 1.5rem; }
  .post-grid:not(.post-grid--related) { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .post-grid--list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .category-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .about-panel { grid-template-columns: 160px 1fr; align-items: center; padding-block: 3rem; }
  .about-panel__number { font-size: 8rem; }
  .site-footer__grid { grid-template-columns: 2fr 1fr 1fr; }
  .entry-content { font-size: 1.04rem; }
  .hero { background-position: 65% center; }
}

@media (min-width: 1024px) {
  body.menu-open { overflow: auto; }
  .site-header__inner { min-height: 76px; }
  .menu-toggle { display: none; }
  .site-nav { position: static; display: flex; align-items: center; gap: 1rem; padding: 0; overflow: visible; background: transparent; }
  .site-nav__list { display: flex; align-items: center; gap: .25rem; margin: 0; }
  .site-nav__list li { position: relative; border: 0; }
  .site-nav__list a { padding: 1rem .65rem; font-size: .86rem; }
  .site-nav__list .sub-menu { position: absolute; top: 100%; left: 0; display: none; min-width: 220px; padding: .5rem; border: 1px solid var(--color-border); background: #fff; box-shadow: var(--shadow); }
  .site-nav__list li:hover > .sub-menu, .site-nav__list li:focus-within > .sub-menu { display: block; }
  .site-nav__cta { width: auto; }
  .hero, .hero__inner { min-height: 570px; }
  .hero { background-position: center; }
  .content-layout { grid-template-columns: minmax(0, 1fr) 310px; gap: 3rem; padding-top: 3rem; }
  .content-layout--wide { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: sticky; top: 100px; }
  .category-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (min-width: 1280px) {
  .container { width: min(100% - 4rem, var(--container)); }
  .hero__title { font-size: 4rem; }
  .content-layout { grid-template-columns: minmax(0, 1fr) 330px; gap: 4rem; }
  .content-layout--wide { grid-template-columns: minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .site-header, .site-footer, .sidebar, .breadcrumb, .cta-box, .post-navigation, .toc__toggle { display: none !important; }
  .content-layout { display: block; }
  .toc { break-inside: avoid; }
  a { color: #000; text-decoration: none; }
}