@import url("/assets/maruni-tokens.css");
@import url("/assets/portal-theme.css");

:root {
  --content-width: 1320px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: auto; font-feature-settings: normal; font-kerning: auto; }
body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-family-sans);
  line-height: 1.7;
}
h1, h2, h3, h4, h5, h6, strong, b { font-weight: var(--font-weight-bold); }
img, video { display: block; max-width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: transparent;
  pointer-events: none;
}
.site-header a { pointer-events: auto; }
.header-inner {
  display: flex;
  align-items: center;
  width: min(var(--content-width), calc(100% - 96px));
  min-height: 88px;
  justify-content: space-between;
  margin: 0 auto;
}
.brand { display: inline-flex; align-items: center; gap: 20px; text-decoration: none; }
.brand img { width: 64px; height: auto; }
.brand-name { font-size: 18px; font-weight: var(--font-weight-bold); letter-spacing: 0.02em; }

.breadcrumb-band { display: none; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(var(--content-width), calc(100% - 96px));
  min-height: 64px;
  margin: 0 auto;
  color: var(--color-text-muted);
  font-size: 13px;
}
.breadcrumb a { color: var(--color-text); text-decoration: none; }
.breadcrumb a:hover { color: var(--color-key-primary); }

main {
  width: min(var(--content-width), calc(100% - 96px));
  margin: 0 auto;
  padding: 32px 0 96px;
}

.site-footer { border-top: 1px solid var(--color-border); color: var(--color-text-muted); font-size: 12px; line-height: 1.8; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; width: min(var(--content-width), calc(100% - 96px)); margin: 0 auto; padding: 32px 0 40px; }
.certification { display: flex; align-items: center; gap: 20px; }
.certification-marks { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.certification-marks img { width: auto; height: 72px; }
.certification p, .copyright { margin: 0; }
.copyright { flex-shrink: 0; }
[hidden] { display: none !important; }
main:has(> .industry-nav) { padding-top: 16px; }
.content-library h1, .content-detail h1 { margin: 0; letter-spacing: -0.025em; line-height: 1.4; }
.content-library h1 { margin-bottom: 16px; font-size: 24px; }

.content-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  column-gap: 24px;
  row-gap: 32px;
}
.industry-nav { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; padding: 4px; margin: -4px -4px 28px; }
.industry-nav::-webkit-scrollbar { display: none; }
.industry-nav a { flex: 0 0 auto; padding: 6px 16px; border: 1px solid var(--color-border-strong); border-radius: 9999px; text-decoration: none; font-size: 12px; font-weight: var(--font-weight-bold); color: var(--color-text-muted); }
.industry-nav a[aria-current="page"] { background: var(--color-key-primary); border-color: var(--color-key-primary); color: var(--color-on-key); }
.industry-nav a:focus-visible { outline: 2px solid var(--color-key-primary); outline-offset: 2px; }
.industry-nav a:hover { text-decoration: none; }
.industry-nav a:not([aria-current="page"]):hover { background: var(--color-surface-neutral); }
.industry-nav a[aria-current="page"]:hover { background: var(--color-key-hover); border-color: var(--color-key-hover); }
.industry-nav a[aria-current="page"]:active { background: var(--color-key-active); }
.card-thumbnail.card-placeholder { border: 0; background: var(--color-surface-neutral); }
.content-card {
  display: flex;
  min-width: 0;
  overflow: hidden;
  flex-direction: column;
  background: var(--color-surface);
  color: var(--color-text);
  text-decoration: none;
}
.card-thumbnail {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-surface-neutral);
  opacity: 1;
  transition: opacity 100ms linear;
}
.card-thumbnail img { width: 100%; height: 100%; object-fit: cover; }
.card-thumbnail video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: var(--color-media-background); opacity: 0; pointer-events: none; }
.card-thumbnail video.is-playing { opacity: 1; }
.card-title {
  padding: 8px 0 0;
  font-size: 16px;
  font-weight: var(--font-weight-bold);
  line-height: 1.5;
  text-decoration-color: transparent;
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: text-decoration-color 160ms ease;
}
.content-card:focus-visible .card-title {
  text-decoration-color: currentColor;
}
@media (hover: hover) {
  .content-card:hover .card-thumbnail { opacity: 0.64; }
  .content-card:hover .card-title { text-decoration-color: currentColor; }
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
  color: var(--color-text-muted);
  font-size: 11px;
  line-height: 1.5;
}
.card-tags { display: flex; flex-wrap: wrap; gap: 4px; }
.card-tag {
  padding: 1px 6px;
  background: var(--color-surface-neutral);
  border-radius: 6px;
  white-space: nowrap;
}
.card-date {
  display: block;
  color: var(--color-text-muted);
  font-size: inherit;
  text-align: left;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 16px;
  color: var(--color-key-primary);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  text-decoration: none;
}
.back-link:hover { text-decoration: underline; }
.content-detail { max-width: 680px; margin-inline: auto; }
.content-detail h1 { margin-bottom: 24px; font-size: clamp(24px, calc(2.75vw + 2px), 30px); }
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(280px, 0.72fr);
  align-items: start;
  gap: 32px;
}
.viewer-column, .content-info { min-width: 0; }
.media-frame { overflow: hidden; background: var(--color-media-background); }
.media-frame-video, .media-frame-video video { aspect-ratio: 16 / 9; }
.media-frame-video video { width: 100%; height: 100%; object-fit: contain; }
.media-frame-document { display: grid; aspect-ratio: 16 / 9; place-items: center; background: var(--color-surface); }
.media-frame-document img { width: 100%; height: 100%; object-fit: contain; }
.media-frame-document img.is-loading { opacity: 0.45; }
.viewer-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 16px;
  padding: 12px 0;
}
.primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 20px;
  border: 0;
  border-radius: 3px;
  background: var(--color-key-primary);
  color: var(--color-on-key);
  font-size: 14px;
  font-weight: var(--font-weight-bold);
  text-decoration: none;
}
.primary-action:hover { background: var(--color-key-hover); }
.primary-action:active { background: var(--color-key-active); }
.viewer-meta { color: var(--color-text-muted); font-size: 13px; }
.pdf-viewer-actions, .pdf-pagination, .pdf-download-actions { display: flex; align-items: center; }
.pdf-viewer-actions { gap: 24px; }
.pdf-pagination { gap: 8px; }
.pdf-download-actions { gap: 16px; }
.page-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  min-height: 44px;
  padding: 0;
  border: 1px solid var(--color-border-strong);
  border-radius: 3px;
  background: var(--color-surface);
  cursor: pointer;
}
.page-button img { width: 24px; height: 24px; }
.page-button:hover:not(:disabled) { border-color: var(--color-key-primary); }
.page-button:disabled { border-color: var(--color-border); cursor: not-allowed; opacity: 0.45; }
.page-counter { min-width: 68px; color: var(--color-text-muted); font-size: 14px; text-align: center; }
.content-info { padding: 24px; background: var(--color-surface-neutral); }
.content-info > p { margin: 0; color: var(--color-text-muted); font-size: 14px; }
.info-list { display: grid; gap: 8px; margin: 24px 0 0; }
.info-list div {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 16px;
  padding: 8px 0;
  font-size: 13px;
}
.info-list dt { color: var(--color-text-subtle); }
.info-list dd { margin: 0; font-weight: var(--font-weight-bold); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.brand:focus-visible, .breadcrumb a:focus-visible, .content-card:focus-visible,
.back-link:focus-visible, .primary-action:focus-visible, .page-button:focus-visible {
  outline: 3px solid var(--color-key-primary);
  outline-offset: 4px;
}

@media (max-width: 1080px) {
  .content-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .detail-layout { grid-template-columns: 1fr; }
  .content-info { max-width: 680px; }
}
@media (max-width: 840px) {
  .content-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .header-inner, .breadcrumb, main, .footer-inner { width: min(100% - 48px, var(--content-width)); }
  .footer-inner, .certification { flex-direction: column; align-items: flex-start; gap: 16px; }
  .certification-marks img { height: 56px; }
  .header-inner { min-height: 72px; }
  .brand { gap: 16px; }
  .brand img { width: 56px; }
  .brand-name { font-size: 14px; }
  .breadcrumb { min-height: 48px; }
  main { padding-top: 32px; }
  .industry-nav { margin-right: -24px; padding-right: 24px; }
  .content-grid { row-gap: 24px; }
  .content-card { max-width: 520px; }
  .content-detail h1 { margin-bottom: 24px; }
  .viewer-actions, .pdf-download-actions { align-items: stretch; flex-direction: column; }
  .pdf-viewer-actions { align-items: stretch; }
  .pdf-pagination { justify-content: space-between; width: 100%; }
  .primary-action { width: 100%; }
  .content-info { padding: 20px; }
}
@media (max-width: 560px) {
  .content-grid { grid-template-columns: 1fr; }
}
@media (max-width: 430px) {
  .brand-name { font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  .card-thumbnail, .card-title { transition: none; }
}

.detail-header { margin-bottom: 24px; }
.content-detail .detail-header h1 { margin-bottom: 12px; }
.detail-header .card-meta { font-size: 13px; gap: 8px 12px; }

.card-estimates { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 4px; color: var(--color-text); font-size: 11px; line-height: 1.5; }
.card-estimates > span { white-space: nowrap; }

.card-estimate-number { font-size: 13px; }

.detail-header .card-estimates { margin-top: 4px; font-size: 15px; }
.detail-header .card-estimate-number { font-size: 17px; }