/* =========================================================
   Header Refactor v2 (Asahi-like frame, iOS tone)
   Tier1: brand/search/util
   Tier2: primary categories
   Tier3: contextual row (breadcrumb style)
   ========================================================= */
.ki-modern-shell .ki-site-header {
  position: sticky;
  top: 0;
  z-index: 140;
  background: rgba(250, 252, 255, 0.88);
  border-bottom: 1px solid rgba(144, 163, 188, 0.14);
  box-shadow: 0 12px 26px rgba(17, 24, 39, 0.04);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.ki-modern-shell .ki-site-header__top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 420px) auto;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(144, 163, 188, 0.12);
}

.ki-modern-shell .ki-site-header__brand {
  min-width: 0;
}

.ki-modern-shell .ki-site-header__brand-link {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0 10px;
  text-decoration: none;
}

.ki-modern-shell .ki-site-header__logo {
  grid-row: 1 / span 2;
}

.ki-modern-shell .ki-site-header__title {
  grid-column: 2;
  margin: 0;
  color: #15263d;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.ki-modern-shell .ki-site-header__tagline {
  grid-column: 2;
  margin-top: 2px;
  color: #6d7f95;
  font-size: 11px;
  line-height: 1.3;
}

.ki-modern-shell .ki-site-header__search {
  min-width: 0;
}

.ki-modern-shell .ki-site-header__search .ki-search-box {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.ki-modern-shell .ki-site-header__search .search-text {
  min-height: 38px;
  border-radius: 12px;
  padding: 0 14px;
  border: 1px solid rgba(144, 163, 188, 0.18);
  background: rgba(255, 255, 255, 0.92);
  color: #1b3148;
}

.ki-modern-shell .ki-site-header__search .search-submit {
  min-width: 58px;
  min-height: 38px;
  padding: 0 12px !important;
  border-radius: 12px;
  border: 1px solid rgba(144, 163, 188, 0.2) !important;
  background: rgba(255, 255, 255, 0.9) !important;
  color: #203952 !important;
  font-weight: 700;
}

.ki-modern-shell .ki-site-header__menu-toggle {
  min-height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(144, 163, 188, 0.18);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 12px rgba(17, 24, 39, 0.04);
}

.ki-modern-shell .ki-site-header__nav-wrap {
  padding: 8px 16px;
  border-bottom: 1px solid rgba(144, 163, 188, 0.12);
  background: rgba(252, 253, 255, 0.72);
}

.ki-modern-shell .ki-site-header__nav--desktop.ki-site-header__nav--main {
  display: block;
}

.ki-modern-shell .ki-nav-menu {
  gap: 6px !important;
  padding: 0 !important;
  border: 0 !important;
  border-radius: 0 !important;
  background: transparent !important;
  box-shadow: none !important;
}

.ki-modern-shell .ki-nav-menu > li > a {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  color: #22384f;
  font-size: 13px;
  font-weight: 700;
}

.ki-modern-shell .ki-nav-menu > li > a:hover,
.ki-modern-shell .ki-nav-menu > li.current-menu-item > a,
.ki-modern-shell .ki-nav-menu > li.current-menu-ancestor > a {
  background: rgba(10, 132, 255, 0.08) !important;
  border-color: rgba(10, 132, 255, 0.14) !important;
  color: #0f4c8d !important;
}

.ki-modern-shell .ki-nav-more__summary {
  min-height: 34px;
  border-radius: 999px;
  border: 1px solid rgba(144, 163, 188, 0.2);
  background: rgba(255, 255, 255, 0.85);
  color: #22384f;
}

.ki-modern-shell .ki-nav-more__panel {
  margin-top: 8px;
}

/* Tier3 visual: breadcrumb row integrated with header system */
.ki-modern-shell #breadcrumb {
  margin: 0 auto 10px;
  border-radius: 14px;
  border: 1px solid rgba(144, 163, 188, 0.14);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 8px 18px rgba(17, 24, 39, 0.03);
}

.ki-modern-shell #breadcrumb .breadcrumb {
  padding-top: 8px;
  padding-bottom: 8px;
}

.ki-modern-shell #breadcrumb a {
  color: #506983;
}

.ki-modern-shell #breadcrumb .breadcrumb_last,
.ki-modern-shell #breadcrumb span[aria-current] {
  color: #1d354e;
  font-weight: 700;
}

@media (max-width: 1023px) {
  .ki-modern-shell .ki-site-header__top {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    padding: 10px 12px;
  }

  .ki-modern-shell .ki-site-header__search {
    grid-column: 1 / -1;
    order: 3;
  }

  .ki-modern-shell .ki-site-header__nav-wrap {
    padding: 6px 10px;
    border-bottom: 1px solid rgba(144, 163, 188, 0.1);
  }

  .ki-modern-shell .ki-site-header__mobile-panel {
    margin: 8px 10px 10px;
    border-radius: 16px;
    border: 1px solid rgba(144, 163, 188, 0.16);
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 12px 24px rgba(17, 24, 39, 0.08);
  }

  .ki-modern-shell #breadcrumb {
    margin: 0 auto 8px;
    border-radius: 12px;
  }

  .ki-modern-shell #breadcrumb .breadcrumb {
    padding-top: 6px;
    padding-bottom: 6px;
    font-size: 11px;
  }
}

.ki-modern-shell #home-top-widget .jin-lp-h2 h2::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 16px;
  margin-right: 8px;
  border-radius: 99px;
  background: linear-gradient(180deg, #1f3c7c, #6da8ff);
  vertical-align: -2px;
}

/* Header: Asahi-like tiering + iOS glass */
.ki-modern-shell .ki-site-header {
  background: rgba(250, 252, 255, 0.86) !important;
  border-bottom: 1px solid rgba(144, 163, 188, 0.18) !important;
  box-shadow: 0 8px 22px rgba(17, 24, 39, 0.045) !important;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.ki-modern-shell .ki-site-header__top {
  max-width: 1240px;
  padding: 12px 18px 10px;
  gap: 14px;
}

.ki-modern-shell .ki-site-header__brand-link {
  align-items: center;
  gap: 0 12px;
}

.ki-modern-shell .ki-site-header__title {
  color: #111827;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.02;
}

.ki-modern-shell .ki-site-header__tagline {
  color: #6b7280;
  font-size: 10px;
  letter-spacing: 0.01em;
}

.ki-modern-shell .ki-site-header__nav-wrap {
  max-width: 1240px;
  padding: 6px 18px 8px;
  border-bottom: 1px solid rgba(144, 163, 188, 0.12);
  background: rgba(255, 255, 255, 0.48);
}

.ki-modern-shell .ki-nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 2px 0;
  margin: 0;
  overflow: visible;
  scrollbar-width: none;
}

.ki-modern-shell .ki-nav-menu::-webkit-scrollbar {
  display: none;
}

@media (min-width: 1024px) {
  .ki-modern-shell .ki-site-header,
  .ki-modern-shell .ki-site-header__top,
  .ki-modern-shell .ki-site-header__nav-wrap,
  .ki-modern-shell .ki-site-header__nav--desktop,
  .ki-modern-shell .ki-nav-menu,
  .ki-modern-shell .ki-nav-menu > li,
  .ki-modern-shell .ki-nav-more {
    overflow: visible !important;
  }

  .ki-modern-shell .ki-nav-more {
    z-index: 240 !important;
  }

  .ki-modern-shell .ki-nav-more__panel {
    z-index: 241 !important;
  }

  /* /article/ (blog index) should be single-column on desktop */
  .ki-modern-shell.blog #main-contents .post-list-mag,
  .ki-modern-shell.blog #main-contents-one .post-list-mag,
  .ki-modern-shell.blog .main-content .post-list-mag,
  .ki-modern-shell.blog #main-contents .post-list,
  .ki-modern-shell.blog #main-contents-one .post-list,
  .ki-modern-shell.blog .main-content .post-list {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  /* Category archives should also use single-column list cards on desktop */
  .ki-modern-shell.category #main-contents .post-list-mag,
  .ki-modern-shell.category #main-contents-one .post-list-mag,
  .ki-modern-shell.category .main-content .post-list-mag {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 14px !important;
  }

  /* Media-object cards: make thumbnail match card height and center vertically */
  .ki-modern-shell.archive .post-list-mag .post-list-inner,
  .ki-modern-shell.category .post-list-mag .post-list-inner,
  .ki-modern-shell.blog .post-list-mag .post-list-inner,
  .ki-modern-shell .post-list .post-list-inner {
    align-items: stretch !important;
  }

  .ki-modern-shell.archive .post-list-mag .post-list-thumb,
  .ki-modern-shell.category .post-list-mag .post-list-thumb,
  .ki-modern-shell.blog .post-list-mag .post-list-thumb,
  .ki-modern-shell .post-list .post-list-thumb {
    align-self: stretch !important;
    height: 100% !important;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .ki-modern-shell.archive .post-list-mag .post-list-thumb img,
  .ki-modern-shell.category .post-list-mag .post-list-thumb img,
  .ki-modern-shell.blog .post-list-mag .post-list-thumb img,
  .ki-modern-shell .post-list .post-list-thumb img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    object-position: center center !important;
  }
}

.ki-modern-shell .ki-nav-menu > li {
  flex: 0 0 auto;
}

.ki-modern-shell .ki-nav-menu > li > a {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 11px;
  border: 1px solid transparent;
  background: transparent;
  color: #1f2937;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: -0.01em;
  transition:
    background-color .14s ease,
    border-color .14s ease,
    color .14s ease,
    transform .12s ease;
}

.ki-modern-shell .ki-nav-menu > li > a:hover,
.ki-modern-shell .ki-nav-menu > li.current-menu-item > a,
.ki-modern-shell .ki-nav-menu > li.current-menu-ancestor > a {
  background: rgba(10, 132, 255, 0.08) !important;
  border-color: rgba(10, 132, 255, 0.14) !important;
  color: #0f4f93 !important;
}

.ki-modern-shell .ki-site-header__context {
  max-width: 1240px;
  padding: 6px 18px 10px;
  border-bottom: 1px solid rgba(144, 163, 188, 0.1);
  background: rgba(255, 255, 255, 0.38);
}

.ki-modern-shell .ki-context-menu {
  gap: 6px;
}

.ki-modern-shell .ki-context-menu a {
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(190, 206, 226, 0.65);
  background: rgba(255, 255, 255, 0.78);
  color: #334155;
  font-size: 11px;
  font-weight: 700;
}

/* Mobile: Asahi-like compact masthead + clean drawer */
@media (max-width: 1023px) {
  .ki-site-header {
    background: rgba(250, 252, 255, 0.9) !important;
    box-shadow: 0 8px 18px rgba(17, 24, 39, 0.04) !important;
  }

  .ki-site-header__top {
    padding: 12px 12px 10px;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    border-bottom: 0;
  }

  .ki-site-header__brand-link {
    grid-template-columns: auto 1fr;
    gap: 0 8px;
  }

  .ki-site-header__logo img {
    max-height: 38px;
  }

  .ki-site-header__title {
    font-size: 18px;
    line-height: 1.05;
  }

  .ki-site-header__tagline {
    display: none;
  }

  .ki-site-header__nav-wrap {
    padding: 0 10px 8px;
    border-bottom: 0;
    background: transparent;
  }

  .ki-site-header__mobile-panel {
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(144, 163, 188, 0.16);
    box-shadow: 0 12px 26px rgba(17, 24, 39, 0.07);
    padding: 8px;
  }

  .ki-mobile-nav-list a {
    min-height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(144, 163, 188, 0.14);
    background: rgba(248, 251, 255, 0.9);
    color: #17324d;
    font-weight: 800;
  }

  .ki-modern-shell.single .cps-post-main-box {
    padding: 10px 14px 22px;
  }

  .ki-modern-shell.single .ki-post-intro,
  .ki-modern-shell.page .ki-post-intro {
    gap: 10px;
    margin: 8px 0 14px;
  }

  .ki-modern-shell.single .ki-post-intro__header,
  .ki-modern-shell.page .ki-post-intro__header {
    gap: 12px;
    padding: 18px 16px 16px;
    border-radius: 16px;
  }

  .ki-modern-shell.single .cps-post-main.entry-content {
    font-size: 13px;
    line-height: 1.95;
  }

  .ki-modern-shell.single .cps-post-title,
  .ki-modern-shell.page .cps-post-title {
    font-size: clamp(1.42rem, 5.6vw, 1.9rem);
    line-height: 1.22;
  }

  .ki-modern-shell.single .ki-post-intro__meta,
  .ki-modern-shell.page .ki-post-intro__meta {
    gap: 6px 8px;
    font-size: 12px;
    padding-top: 10px;
  }

  .ki-modern-shell.single .ki-post-intro__meta {
    gap: 0;
    font-size: 12px;
  }

  .ki-modern-shell.single .ki-post-intro__share,
  .ki-modern-shell.page .ki-post-intro__share {
    padding: 7px 8px;
    border-radius: 12px;
  }

  .ki-modern-shell h2.ki-ui-headline,
  .ki-modern-shell h3.ki-ui-headline {
    border-radius: 10px;
    padding: 9px 12px !important;
  }
}

@media (prefers-reduced-motion: reduce) {
  .ki-modern-shell .ki-ui-btn,
  .ki-modern-shell .ki-site-header,
  .ki-modern-shell .ki-site-header__menu-toggle,
  .ki-modern-shell .ki-mobile-nav-list a,
  .ki-modern-shell .ki-nav-menu > li > a {
    transition: none !important;
    animation: none !important;
  }
}

@media (prefers-color-scheme: dark) {
  .ki-modern-shell {
    --ki-text: #e5e7eb;
  }

  .ki-modern-shell #scroll-content {
    background:
      radial-gradient(circle at 10% -10%, rgba(31, 41, 55, 0.55), transparent 44%),
      radial-gradient(circle at 92% 0%, rgba(30, 41, 59, 0.5), transparent 40%),
      #0f172a;
  }

  .ki-modern-shell .ki-site-header,
  .ki-modern-shell .ki-site-header__nav-wrap,
  .ki-modern-shell .ki-site-header__context,
  .ki-modern-shell .ki-ui-card,
  .ki-modern-shell .exam-vote-wrapper,
  .ki-modern-shell .exam-score-wrapper,
  .ki-modern-shell .dsscore {
    background: rgba(15, 23, 42, 0.72) !important;
    border-color: rgba(148, 163, 184, 0.18) !important;
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.28) !important;
  }

  .ki-modern-shell .ki-nav-menu > li > a,
  .ki-modern-shell .ki-context-menu a,
  .ki-modern-shell .ki-mobile-nav-list a,
  .ki-modern-shell .ki-site-header__title,
  .ki-modern-shell.single .cps-post-main.entry-content,
  .ki-modern-shell.single .cps-post-title {
    color: #e5e7eb !important;
  }

  .ki-modern-shell h2.ki-ui-headline,
  .ki-modern-shell h3.ki-ui-headline,
  .ki-modern-shell.single .cps-post-main.entry-content h2,
  .ki-modern-shell.single .cps-post-main.entry-content h3 {
    background: rgba(30, 41, 59, 0.7) !important;
    border-color: rgba(148, 163, 184, 0.18) !important;
    color: #f1f5f9 !important;
  }
}

/* Final mobile drawer override (hamburger -> right drawer) */
@media (max-width: 1023px) {
  body.ki-mobile-nav-lock {
    overflow: hidden;
    touch-action: none;
  }

  .ki-site-header {
    overflow: visible !important;
  }

  .ki-site-header__top,
  .ki-site-header__nav-wrap,
  .ki-site-header__nav,
  .ki-site-header__nav--mobile {
    overflow: visible !important;
    max-height: none !important;
  }

  .ki-site-header::before {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.18);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .18s ease;
    z-index: 118;
  }

  .ki-site-header.is-mobile-nav-open::before {
    opacity: 1;
  }

  /* iOS Safari: transformed ancestor makes fixed drawer height collapse */
  .ki-site-header.is-mobile-nav-open {
    transform: none !important;
  }

  .ki-site-header__menu-toggle {
    position: relative;
    z-index: 122;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle {
    position: fixed !important;
    top: max(16px, calc(env(safe-area-inset-top, 0px) + 16px));
    right: 16px;
    width: 44px;
    min-width: 44px;
    height: 44px;
    min-height: 44px;
    padding: 0 !important;
    border-radius: 14px !important;
    border: 1px solid rgba(96, 165, 250, 0.32) !important;
    background: rgba(239, 246, 255, 0.94) !important;
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.12) !important;
  }

  .ki-site-header__menu-toggle-label {
    display: none !important;
  }

  .ki-site-header__nav-wrap {
    padding: 0 !important;
    border: 0 !important;
    background: transparent !important;
  }

  .ki-site-header__nav--mobile {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
  }

  .ki-site-header__mobile-panel {
    position: fixed !important;
    top: max(8px, env(safe-area-inset-top, 0px));
    right: 8px;
    bottom: max(8px, env(safe-area-inset-bottom, 0px));
    left: auto !important;
    width: min(86vw, 360px);
    max-height: none !important;
    margin: 0 !important;
    padding: 64px 12px 12px !important;
    border-radius: 18px !important;
    border: 1px solid rgba(144, 163, 188, 0.18) !important;
    background: rgba(255, 255, 255, 0.96) !important;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    overflow-y: auto;
    overflow-x: hidden;
    height: calc(100dvh - max(8px, env(safe-area-inset-top, 0px)) - max(8px, env(safe-area-inset-bottom, 0px)));
    max-height: calc(100dvh - max(8px, env(safe-area-inset-top, 0px)) - max(8px, env(safe-area-inset-bottom, 0px))) !important;
    z-index: 121 !important;
    opacity: 1;
    transform: translateX(0) scale(1);
    transition: transform .2s ease, opacity .18s ease;
  }

  .ki-site-header:not(.is-mobile-nav-open) .ki-site-header__mobile-panel {
    display: block !important;
    opacity: 0 !important;
    pointer-events: none !important;
    transform: translateX(18px) scale(.985) !important;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__mobile-panel {
    display: block !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: translateX(0) scale(1) !important;
  }

  .ki-site-header__mobile-panel[hidden] {
    display: none !important;
  }

  .ki-mobile-nav-list {
    display: grid !important;
    gap: 10px !important;
    margin: 0 !important;
    padding: 2px 0 0 !important;
  }

  .ki-mobile-nav-section {
    margin: 0 0 12px !important;
  }

  .ki-mobile-nav-section:last-child {
    margin-bottom: 0 !important;
  }

  .ki-mobile-nav-section__title {
    margin: 0 0 8px !important;
    padding: 0 4px !important;
    color: #64748b !important;
    font-size: 11px !important;
    font-weight: 800 !important;
    letter-spacing: .06em !important;
  }

  .ki-mobile-nav-list li {
    margin: 0 !important;
  }

  .ki-mobile-nav-list a {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    min-height: 48px !important;
    padding: 0 14px !important;
    gap: 10px !important;
    border-radius: 14px !important;
    border: 1px solid rgba(144, 163, 188, 0.14) !important;
    background: rgba(248, 251, 255, 0.9) !important;
    color: #111827 !important;
    font-weight: 800 !important;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.95) !important;
  }

  .ki-mobile-nav-link__emoji {
    width: 1.8em;
    min-width: 1.8em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    line-height: 1;
  }

  .ki-mobile-nav-link__title {
    flex: 1 1 auto;
    min-width: 0;
    line-height: 1.25;
    letter-spacing: -0.01em;
  }

  .ki-mobile-nav-list a::after {
    content: "›";
    color: #64748b;
    font-size: 18px;
    line-height: 1;
    font-weight: 500;
    margin-left: 4px;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle-icon {
    width: 18px;
    height: 18px;
    justify-content: center;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle-icon i {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 18px;
    transform-origin: center;
    margin: 0;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle-icon i:nth-child(1) {
    transform: translate(-50%, -50%) rotate(45deg) !important;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle-icon i:nth-child(2) {
    opacity: 0 !important;
  }

  .ki-site-header.is-mobile-nav-open .ki-site-header__menu-toggle-icon i:nth-child(3) {
    transform: translate(-50%, -50%) rotate(-45deg) !important;
  }
}