/*
Theme Name:  86研究所
Theme URI:   https://86lab.jp/
Author:      86研究所
Author URI:  https://86lab.jp/
Description: 86研究所 公式WordPressテーマ。SNS・Web・AI マーケティング支援会社サイト。NRIスタイルに基づくクリーンな企業サイトデザイン。
Version:     1.8.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 8.0
License:     Proprietary
Text Domain: 86lab-theme
Tags:        corporate, blog, custom-menu, custom-logo, featured-images, threaded-comments, translation-ready
*/

/* ===========================
   CSS Custom Properties
=========================== */
:root {
  --color-primary:        #001a6e;
  --color-primary-dark:   #00135a;
  --color-secondary:      #0055b3;
  --color-accent:         #1e4db7;
  --color-text:           #1a1a2e;
  --color-text-secondary: #4a4a6a;
  --color-bg:             #ffffff;
  --color-bg-light:       #f4f6f9;
  --color-bg-dark:        #001a6e;
  --color-border:         #d8dde6;
  --color-white:          #ffffff;
  --color-new-badge:      #e8001c;
  --font-ja:        'Noto Sans JP','Hiragino Kaku Gothic ProN','Meiryo',sans-serif;
  --font-en:        'Inter','Helvetica Neue',Arial,sans-serif;
  --header-height:  112px;
  --utility-height: 44px;
  --nav-height:     68px;
  --container-max:  1280px;
  --container-pad:  40px;
  --transition:     0.25s ease;
}

/* ===========================
   Reset & Base
=========================== */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: color var(--transition), opacity var(--transition); }
a:hover { color: var(--color-secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad); }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ===========================
   HEADER
=========================== */
#masthead {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: var(--color-white);
  box-shadow: 0 1px 0 rgba(0,0,0,.08);
  transition: transform .3s, box-shadow .3s;
}
#masthead.is-scrolled { box-shadow: 0 2px 16px rgba(0,26,110,.10); }
#masthead.is-hidden   { transform: translateY(-100%); }

.header-utility {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  height: var(--utility-height);
}
.header-utility .container {
  display: flex; align-items: center; justify-content: flex-end; height: 100%; gap: 32px;
}
.utility-nav { display: flex; align-items: center; gap: 28px; }
.utility-nav a { font-size: 13px; color: var(--color-text); }
.utility-nav a:hover { color: var(--color-secondary); }

.header-nav { height: var(--nav-height); background: var(--color-white); }
.header-nav .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }

.site-logo a { display: flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 6px;
  background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 900; color: #fff;
  font-family: var(--font-en); letter-spacing: -1px;
}
.logo-text { font-size: 18px; font-weight: 700; color: var(--color-primary); letter-spacing: .02em; }

.main-menu-wrap { display: flex; align-items: center; flex: 1; justify-content: center; }
.main-menu { display: flex; align-items: center; }
.main-menu > li > a {
  display: block; padding: 0 16px;
  height: var(--nav-height); line-height: var(--nav-height);
  font-size: 14px; font-weight: 500; color: var(--color-text);
  letter-spacing: .03em; position: relative; white-space: nowrap;
}
.main-menu > li > a::after {
  content: ''; position: absolute; bottom: 0; left: 16px; right: 16px;
  height: 3px; background: var(--color-primary);
  transform: scaleX(0); transition: transform var(--transition);
}
.main-menu > li > a:hover { color: var(--color-primary); }
.main-menu > li > a:hover::after { transform: scaleX(1); }
.main-menu > .current-menu-item > a::after,
.main-menu > .current-menu-parent > a::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: 20px; }
.search-toggle, .menu-toggle {
  display: flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; color: var(--color-text);
  cursor: pointer; transition: color var(--transition);
}
.search-toggle:hover, .menu-toggle:hover { color: var(--color-primary); }
.search-toggle svg, .menu-toggle svg { width: 22px; height: 22px; }

/* Search overlay */
.search-overlay {
  position: fixed; inset: 0;
  background: rgba(0,26,110,.95); z-index: 1200;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .25s;
}
.search-overlay.is-open { opacity: 1; pointer-events: all; }
.search-overlay-inner { width: 100%; max-width: 700px; padding: 0 24px; position: relative; }
.search-overlay-form { display: flex; border-bottom: 2px solid rgba(255,255,255,.5); }
.search-overlay-form input {
  flex: 1; height: 60px; background: none; border: none; outline: none;
  font-size: 22px; color: #fff; font-family: var(--font-ja);
}
.search-overlay-form input::placeholder { color: rgba(255,255,255,.4); }
.search-overlay-form button { color: #fff; background: none; border: none; cursor: pointer; padding: 0 12px; }
.search-overlay-form button svg { width: 24px; height: 24px; }
.search-overlay-close {
  position: absolute; top: -60px; right: 24px;
  color: rgba(255,255,255,.8); cursor: pointer; background: none; border: none;
}
.search-overlay-close svg { width: 32px; height: 32px; }

/* Mobile menu */
.mobile-menu-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  width: 100vw; height: 100vh;
  background: #001a6e;  /* 完全不透明：背景透過なし */
  z-index: 99999;
  transform: translateX(100%);
  transition: transform .35s cubic-bezier(.4,0,.2,1);
  overflow-y: auto;
  display: block;
}
.mobile-menu-overlay.is-open { transform: translateX(0); }
.mobile-menu-inner { padding: 24px 24px 60px; }
.mobile-menu-close {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; margin-left: auto; margin-bottom: 24px; color: #fff;
}
.mobile-menu-close svg { width: 24px; height: 24px; }
.mobile-menu > li > a,
.mobile-menu .menu-item a,
.mobile-menu-overlay ul li a,
.mobile-menu-overlay a {
  display: block; padding: 16px 0; font-size: 18px; font-weight: 600;
  color: #fff !important; border-bottom: 1px solid rgba(255,255,255,.18); text-decoration: none;
}
.mobile-menu-overlay ul li a:hover,
.mobile-menu a:hover { color: #c5d8f5 !important; }
.mobile-utility-links { margin-top: 32px; display: flex; flex-direction: column; gap: 12px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.2); }
.mobile-utility-links a { font-size: 14px; color: rgba(255,255,255,.85) !important; text-decoration: none; }
body.menu-open { overflow: hidden; }

/* ===========================
   SITE MAIN
=========================== */
.site-main { margin-top: var(--header-height); }

/* ===========================
   HERO
=========================== */
.hero-section {
  position: relative; width: 100%;
  height: calc(100vh - var(--header-height)); min-height: 600px;
  overflow: hidden; background: #dde8f5;
}
.hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  background-size: cover; background-position: center right; background-repeat: no-repeat;
}
.hero-section::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to right, rgba(240,245,252,.92) 0%, rgba(235,242,250,.7) 45%, transparent 70%);
  z-index: 1;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-pad);
  height: calc(100% - 180px);
  display: flex; flex-direction: column; justify-content: center;
}
.hero-en-title {
  font-size: clamp(36px, 4.5vw, 60px); font-weight: 400;
  color: var(--color-primary); font-family: var(--font-en);
  letter-spacing: -.5px; line-height: 1.2; margin-bottom: 12px;
}
.hero-ja-title {
  font-size: clamp(28px, 3.5vw, 48px); font-weight: 700;
  color: var(--color-primary); line-height: 1.35; margin-bottom: 24px;
}
.hero-subtitle {
  font-size: 15px; color: var(--color-primary); line-height: 1.8;
  margin-bottom: 40px; max-width: 500px; opacity: .8;
}
.hero-cta {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--color-primary); color: #fff;
  padding: 14px 32px; font-size: 15px; font-weight: 500;
  border-radius: 3px; transition: background var(--transition); width: fit-content;
}
.hero-cta:hover { background: var(--color-primary-dark); color: #fff; }
.hero-cta svg { width: 16px; height: 16px; }

/* Feature Cards */
.hero-features {
  position: absolute; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; z-index: 3; padding: 0 var(--container-pad); max-width: var(--container-max);
}
.hero-features-inner { display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-feature-card {
  background: rgba(255,255,255,.82); backdrop-filter: blur(12px);
  padding: 20px 24px; display: flex; align-items: flex-start; gap: 16px;
  border-left: 1px solid rgba(255,255,255,.5); cursor: pointer;
  transition: background var(--transition);
}
.hero-feature-card:first-child { border-left: none; }
.hero-feature-card:hover { background: rgba(255,255,255,.95); }
.hero-feature-card.active { background: rgba(0,26,110,.92); }
.hero-feature-card.active .feature-title,
.hero-feature-card.active .feature-desc { color: #fff; }
.feature-thumb {
  width: 56px; height: 56px; border-radius: 6px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.feature-text { flex: 1; min-width: 0; }
.feature-title { font-size: 15px; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; line-height: 1.3; }
.feature-desc {
  font-size: 12px; color: var(--color-text-secondary); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===========================
   NOTICE BAR
=========================== */
.notice-bar { background: #fff; border-bottom: 1px solid var(--color-border); padding: 14px 0; }
.notice-bar .container { display: flex; align-items: center; gap: 24px; }
.notice-label { font-size: 14px; font-weight: 700; color: var(--color-primary); white-space: nowrap; flex-shrink: 0; }
.notice-list { display: flex; align-items: center; gap: 8px; overflow: hidden; flex: 1; }
.notice-item { display: flex; align-items: center; gap: 12px; font-size: 14px; color: var(--color-text); }
.notice-item a { color: var(--color-text); }
.notice-item a:hover { color: var(--color-secondary); text-decoration: underline; }
.notice-arrow {
  width: 20px; height: 20px; border: 2px solid var(--color-primary); border-radius: 50%;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--color-primary);
}
.notice-arrow svg { width: 10px; height: 10px; }

/* ===========================
   NEWS SECTION
=========================== */
.news-section { padding: 72px 0 80px; background: #fff; }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; }
.section-title { font-size: clamp(24px, 3vw, 36px); font-weight: 700; color: var(--color-primary); line-height: 1.2; }
.section-link {
  font-size: 14px; color: var(--color-secondary); font-weight: 500;
  display: flex; align-items: center; gap: 6px; white-space: nowrap;
}
.section-link:hover { color: var(--color-primary); }
.section-link svg { width: 14px; height: 14px; }
.news-list { border-top: 1px solid var(--color-border); }
.news-item { border-bottom: 1px solid var(--color-border); }
.news-item a { display: flex; align-items: baseline; gap: 20px; padding: 20px 0; width: 100%; color: var(--color-text); }
.news-item a:hover .news-title { color: var(--color-secondary); text-decoration: underline; }
.news-new-badge {
  background: var(--color-new-badge); color: #fff; font-size: 11px; font-weight: 700;
  padding: 2px 8px; border-radius: 2px; flex-shrink: 0; letter-spacing: .05em;
}
.news-date { font-size: 14px; color: var(--color-text-secondary); white-space: nowrap; flex-shrink: 0; min-width: 100px; }
.news-category { font-size: 13px; color: var(--color-text-secondary); white-space: nowrap; flex-shrink: 0; min-width: 110px; }
.news-title { font-size: 15px; color: var(--color-text); line-height: 1.6; flex: 1; }
.news-more-btn { display: flex; justify-content: center; margin-top: 48px; }
.btn-primary {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  background: var(--color-primary); color: #fff;
  padding: 16px 64px; font-size: 15px; font-weight: 500;
  letter-spacing: .05em; min-width: 300px; transition: background var(--transition);
}
.btn-primary:hover { background: var(--color-primary-dark); color: #fff; }
.btn-primary svg { width: 14px; height: 14px; }

/* ===========================
   SERVICES — 2-column layout
=========================== */
.services-section { padding: 80px 0; background: #fff; border-top: 1px solid var(--color-border); }
.services-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.section-eyebrow {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 700; color: var(--color-primary); margin-bottom: 20px;
}
.section-eyebrow::before {
  content: ''; display: inline-block; width: 4px; height: 16px;
  background: var(--color-primary); border-radius: 2px;
}
.services-headline {
  font-size: clamp(22px, 2.8vw, 34px); font-weight: 700; color: var(--color-primary);
  line-height: 1.45; margin-bottom: 24px;
}
.services-desc { font-size: 15px; color: var(--color-text-secondary); line-height: 1.9; margin-bottom: 36px; }
.services-visual svg { width: 100%; max-width: 540px; }

/* ===========================
   KNOWLEDGE / INSIGHT
=========================== */
.knowledge-section { padding: 80px 0; background: var(--color-bg-light); }
.knowledge-subtitle { font-size: 15px; color: var(--color-text-secondary); margin-top: 8px; margin-bottom: 40px; }
.card-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.knowledge-card { background: #fff; border-radius: 4px; overflow: hidden; transition: box-shadow var(--transition), transform var(--transition); }
.knowledge-card:hover { box-shadow: 0 8px 32px rgba(0,26,110,.12); transform: translateY(-2px); }
.knowledge-card a { display: block; color: var(--color-text); }
.card-thumb { width: 100%; aspect-ratio: 4/3; overflow: hidden; display: flex; align-items: center; justify-content: center; background: var(--color-bg-light); }
.card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 20px; }
.card-category { font-size: 12px; color: var(--color-secondary); font-weight: 500; margin-bottom: 8px; }
.card-title { font-size: 14px; font-weight: 700; line-height: 1.55; color: var(--color-text); margin-bottom: 12px; }
.card-date { font-size: 12px; color: var(--color-text-secondary); }
.card-dots { display: flex; justify-content: center; gap: 8px; margin-top: 28px; }
.card-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-border); cursor: pointer; transition: background var(--transition); }
.card-dot.active { background: var(--color-primary); }

/* ===========================
   SEARCH SECTION (dark navy)
=========================== */
.search-section { padding: 72px 0; background: var(--color-primary); }
.search-section .section-title { color: #fff; margin-bottom: 8px; }
.search-section .knowledge-subtitle { color: rgba(255,255,255,.75); margin-bottom: 36px; }
.search-form-wrap { display: flex; max-width: 640px; margin-bottom: 32px; }
.search-input {
  flex: 1; height: 52px; padding: 0 20px; font-size: 15px;
  border: none; outline: none; font-family: var(--font-ja); color: var(--color-text);
}
.search-submit {
  height: 52px; padding: 0 28px; background: var(--color-secondary); color: #fff;
  font-size: 15px; font-weight: 500; display: flex; align-items: center; gap: 8px;
  border: none; cursor: pointer; transition: background var(--transition); white-space: nowrap;
}
.search-submit:hover { background: #0047a0; }
.search-submit svg { width: 16px; height: 16px; }
.search-tags-label { font-size: 13px; color: rgba(255,255,255,.6); margin-bottom: 12px; }
.search-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.search-tag {
  font-size: 13px; color: rgba(255,255,255,.85);
  border: 1px solid rgba(255,255,255,.3); padding: 6px 14px;
  border-radius: 20px; transition: all var(--transition); cursor: pointer;
}
.search-tag:hover { background: rgba(255,255,255,.12); color: #fff; border-color: rgba(255,255,255,.6); }

/* ===========================
   MEDIA / ABOUT — &N style
=========================== */
.media-section { padding: 80px 0; background: #fff; }
.media-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 64px; align-items: start; }
.media-eyebrow { font-size: 13px; color: var(--color-text-secondary); margin-bottom: 20px; }
.brand-logo-wrap { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
.brand-logo-mark {
  width: 56px; height: 56px; border-radius: 8px; background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: 900; color: #fff; font-family: var(--font-en);
  letter-spacing: -1px; flex-shrink: 0;
}
.brand-logo-label { font-size: 22px; font-weight: 700; color: var(--color-primary); display: block; }
.brand-logo-sublabel { font-size: 14px; color: var(--color-text-secondary); display: block; margin-top: 2px; }
.media-desc { font-size: 15px; color: var(--color-text-secondary); line-height: 1.9; margin-bottom: 16px; }
.media-cards { display: flex; flex-direction: column; gap: 16px; }
.media-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: 4px;
  overflow: hidden; display: flex; transition: box-shadow var(--transition);
}
.media-card:hover { box-shadow: 0 8px 32px rgba(0,26,110,.10); }
.media-card-thumb {
  width: 140px; height: 100px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center; font-size: 28px; overflow: hidden;
}
.media-card-thumb img { width: 100%; height: 100%; object-fit: cover; }
.media-card-body { padding: 16px 20px; flex: 1; }
.media-card-new {
  display: inline-block; font-size: 11px; font-weight: 700;
  background: var(--color-new-badge); color: #fff;
  padding: 2px 8px; border-radius: 2px; letter-spacing: .05em; margin-bottom: 6px;
}
.media-card-category { font-size: 12px; color: var(--color-secondary); margin-bottom: 6px; font-weight: 500; }
.media-card-title { font-size: 14px; font-weight: 700; line-height: 1.55; color: var(--color-text); margin-bottom: 6px; }
.media-card-date { font-size: 12px; color: var(--color-text-secondary); }

/* ===========================
   ARCHIVE / NEWS LIST
=========================== */
.news-archive-header { margin-bottom: 48px; padding-bottom: 24px; border-bottom: 2px solid var(--color-primary); }

/* ===========================
   SINGLE POST
=========================== */
.entry-content { font-size: 15px; line-height: 2; color: var(--color-text); }
.entry-content h2 { font-size: 22px; font-weight: 700; color: var(--color-primary); margin: 48px 0 20px; padding-bottom: 12px; border-bottom: 1px solid var(--color-border); }
.entry-content h3 { font-size: 18px; font-weight: 700; color: var(--color-primary); margin: 36px 0 16px; }
.entry-content p { margin-bottom: 24px; }
.entry-content ul, .entry-content ol { margin: 0 0 24px 24px; }
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content img { border-radius: 4px; margin: 32px auto; }
.entry-content a { color: var(--color-secondary); text-decoration: underline; }
.entry-content a:hover { color: var(--color-primary); }
.entry-content blockquote {
  border-left: 4px solid var(--color-primary); margin: 32px 0; padding: 20px 24px;
  background: var(--color-bg-light); font-style: italic; color: var(--color-text-secondary);
}

/* Pagination */
.nav-links { display: flex; justify-content: center; gap: 8px; margin-top: 60px; }
.page-numbers {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border: 1px solid var(--color-border);
  font-size: 14px; color: var(--color-text); transition: all var(--transition);
}
.page-numbers:hover, .page-numbers.current {
  background: var(--color-primary); color: #fff; border-color: var(--color-primary);
}
.page-numbers.dots { border: none; }

/* ===========================
   FOOTER
=========================== */
.site-footer { background: #fff; border-top: 1px solid var(--color-border); }
.footer-sitemap { padding: 56px 0 48px; }
.footer-top {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 40px; padding-bottom: 32px; border-bottom: 1px solid var(--color-border);
}
.footer-logo-wrap { display: flex; align-items: center; gap: 10px; }
.footer-logo-mark {
  width: 32px; height: 32px; border-radius: 6px; background: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 900; color: #fff; font-family: var(--font-en);
}
.footer-logo-text { font-size: 16px; font-weight: 700; color: var(--color-primary); }
.footer-top-link a { font-size: 14px; color: var(--color-text-secondary); }
.footer-top-link a:hover { color: var(--color-primary); }
.footer-nav-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0 40px; }
.footer-nav-col h3 {
  font-size: 14px; font-weight: 700; color: var(--color-primary);
  margin-bottom: 16px; padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border); white-space: nowrap;
}
.footer-nav-col ul li { margin-bottom: 10px; }
.footer-nav-col ul li a { font-size: 13px; color: var(--color-text-secondary); }
.footer-nav-col ul li a:hover { color: var(--color-primary); }
.footer-bottom { background: var(--color-bg-light); border-top: 1px solid var(--color-border); padding: 18px 0; }
.footer-bottom .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.footer-legal-links { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-legal-links a { font-size: 12px; color: var(--color-text-secondary); }
.footer-legal-links a:hover { color: var(--color-primary); text-decoration: underline; }
.footer-copyright { font-size: 12px; color: var(--color-text-secondary); }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 1024px) {
  :root { --container-pad: 24px; }
  .hero-features-inner { grid-template-columns: repeat(2, 1fr); }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .services-layout { grid-template-columns: 1fr; gap: 40px; }
  .media-layout { grid-template-columns: 1fr; }
  .footer-nav-grid { grid-template-columns: repeat(3, 1fr); gap: 32px; }
}
@media (max-width: 768px) {
  :root { --header-height: 60px; --utility-height: 0px; --nav-height: 60px; --container-pad: 16px; }
  .header-utility { display: none; }
  .main-menu-wrap { display: none; }
  .hero-features { display: none; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .footer-nav-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .news-category { display: none; }
  .search-form-wrap { flex-direction: column; max-width: 100%; }
  .search-input { border-radius: 3px 3px 0 0; }
  .search-submit { border-radius: 0 0 3px 3px; justify-content: center; }
  .media-card-thumb { width: 100px; }
}
@media (max-width: 480px) {
  .card-grid { grid-template-columns: 1fr; }
  .footer-nav-grid { grid-template-columns: 1fr; }
  .btn-primary { min-width: auto; padding: 16px 32px; }
}

/* ===========================
   COMPREHENSIVE RESPONSIVE OVERRIDE
   インラインstyleで grid-template-columns:repeat(N, 1fr) を使っている
   全てのカラム構成を強制的にモバイル時1カラム化
=========================== */

/* タブレット 1024px以下：3カラム→2カラム */
@media (max-width: 1024px) {
  [style*="grid-template-columns:repeat(3"],
  [style*="grid-template-columns: repeat(3"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  /* サイドバー2/3 + 1/3 のレイアウト */
  [style*="grid-template-columns:2fr 1fr"],
  [style*="grid-template-columns: 2fr 1fr"],
  [style*="grid-template-columns:1fr 1fr"],
  [style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
}

/* モバイル 768px以下：すべて1カラム */
@media (max-width: 768px) {
  /* すべての grid-template-columns を強制1カラム化 */
  [style*="grid-template-columns:repeat(3"],
  [style*="grid-template-columns: repeat(3"],
  [style*="grid-template-columns:repeat(4"],
  [style*="grid-template-columns: repeat(4"],
  [style*="grid-template-columns:repeat(5"],
  [style*="grid-template-columns: repeat(5"],
  [style*="grid-template-columns:repeat(2"],
  [style*="grid-template-columns: repeat(2"] {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }
  /* gap が固定値の場合も縮小 */
  [style*="gap:64px"], [style*="gap: 64px"] { gap: 32px !important; }
  [style*="gap:48px"], [style*="gap: 48px"] { gap: 24px !important; }
  [style*="gap:40px"], [style*="gap: 40px"] { gap: 20px !important; }
  [style*="gap:32px"], [style*="gap: 32px"] { gap: 20px !important; }

  /* スティッキーサイドバーは解除 */
  aside[style*="position:sticky"], aside[style*="position: sticky"] {
    position: static !important;
    top: auto !important;
  }

  /* padding が大きいものを縮小 */
  [style*="padding:80px 0"], [style*="padding: 80px 0"] { padding: 50px 0 !important; }
  [style*="padding:64px 0"], [style*="padding: 64px 0"] { padding: 40px 0 !important; }
  [style*="padding:60px 0"], [style*="padding: 60px 0"] { padding: 36px 0 !important; }

  /* セクションヘッダー縦並び */
  .section-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 12px !important;
  }

  /* ニュース項目を縦並び */
  .news-item a {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 6px !important;
    padding: 14px 0 !important;
  }
  .news-date, .news-category, .news-new-badge {
    margin: 0 !important;
  }
  .news-title {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }

  /* ヒーロー */
  .hero-section { padding: 50px 0 40px !important; min-height: auto !important; }
  .hero-content { padding: 0 16px !important; max-width: 100% !important; }
  .hero-ja-title { font-size: clamp(22px, 6vw, 32px) !important; }
  .hero-subtitle { font-size: 14px !important; }
  .hero-cta { padding: 14px 24px !important; font-size: 14px !important; }
  .hero-bg { opacity: 0.35; }  /* テキスト視認性向上 */

  /* about / company profile などの2カラム強制1カラム */
  .profile-grid, .about-grid, .company-grid, .contact-grid, .business-cards,
  .media-layout, .services-layout {
    display: block !important;
  }
  .profile-photo-col, .profile-text-col {
    width: 100% !important;
    max-width: 100% !important;
  }
  .profile-photo-col img {
    width: 100% !important;
    max-width: 280px !important;
    margin-left: auto !important;
    margin-right: auto !important;
    display: block !important;
  }

  /* テーブル系（会社概要） */
  .company-table th, .company-table td {
    display: block !important;
    width: 100% !important;
    text-align: left !important;
    padding: 8px 0 !important;
    border-bottom: none !important;
  }
  .company-table th {
    background: #f0f3f9 !important;
    padding: 8px 14px !important;
    font-size: 13px !important;
    margin-top: 12px !important;
  }
  .company-table td {
    padding: 8px 14px 16px !important;
  }

  /* フォーム入力 */
  input[type="text"], input[type="email"], input[type="tel"], input[type="url"],
  textarea, select {
    font-size: 16px !important; /* iOS zoom 防止 */
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  /* 横スクロール防止：iframe・image を強制レスポンシブ
     ※ロゴ等の固定サイズ画像は除外（.site-logo img, .footer-logo img, .custom-logo）
     ※iframe の aspect-ratio は YouTube/Vimeo 等のみ。Google Maps 等は元の比率維持 */
  iframe { max-width: 100% !important; }
  iframe[src*="youtube"], iframe[src*="youtu.be"], iframe[src*="vimeo"] {
    aspect-ratio: 16/9; height: auto !important;
  }
  iframe[src*="google.com/maps"], iframe[src*="maps.google"] {
    min-height: 250px;
  }
  img:not(.site-logo img):not(.footer-logo img):not(.custom-logo):not(.no-responsive) {
    max-width: 100%;
    height: auto;
  }
  pre, code { overflow-x: auto !important; max-width: 100% !important; }

  /* テーブル横スクロール */
  table:not(.company-table):not(.lab86-voice-table) {
    display: block !important;
    overflow-x: auto !important;
    white-space: nowrap !important;
  }

  /* h1/h2 大型タイトル縮小 */
  h1 { font-size: clamp(20px, 5.5vw, 28px) !important; line-height: 1.4 !important; }
  h2 { font-size: clamp(18px, 4.5vw, 22px) !important; line-height: 1.4 !important; }
  h3 { font-size: clamp(15px, 4vw, 18px) !important; }

  /* CTA section ボタン縦並び */
  .cta-section [style*="display:flex"][style*="gap"],
  .cta-section [style*="display: flex"][style*="gap"] {
    flex-direction: column !important;
    align-items: stretch !important;
  }
  .cta-section .btn-primary {
    width: 100% !important;
    padding: 14px 20px !important;
    font-size: 14px !important;
    justify-content: center !important;
  }

  /* ヘッダーアクション */
  .header-actions { gap: 8px !important; }
  .header-actions button { padding: 8px !important; }

  /* サービスカードの大きいパディング縮小 */
  .service-card div[style*="padding:32px"], .service-card div[style*="padding: 32px"] {
    padding: 20px !important;
  }
  .knowledge-card div[style*="padding:28px"], .knowledge-card div[style*="padding: 28px"] {
    padding: 16px !important;
  }

  /* breadcrumb */
  .breadcrumb, nav[aria-label="パンくず"], nav[aria-label="パンくずリスト"] {
    font-size: 12px !important;
    overflow-x: auto !important;
    white-space: nowrap !important;
    -webkit-overflow-scrolling: touch !important;
  }
}

/* 超小型 480px以下 */
@media (max-width: 480px) {
  :root { --container-pad: 14px; }
  .container { padding-left: 14px !important; padding-right: 14px !important; }
  .hero-section { padding: 40px 0 30px !important; }
  .hero-ja-title { font-size: clamp(20px, 7vw, 26px) !important; }
  .hero-en-title { font-size: 11px !important; }
  .section-title { font-size: 20px !important; }
  /* スマホでは固定px paddingを軒並み縮小 */
  [style*="padding:40px"], [style*="padding: 40px"] { padding: 24px !important; }
  [style*="padding:36px"], [style*="padding: 36px"] { padding: 20px !important; }
  [style*="padding:32px"], [style*="padding: 32px"] { padding: 18px !important; }
  [style*="padding:28px"], [style*="padding: 28px"] { padding: 16px !important; }
  [style*="padding:24px"], [style*="padding: 24px"] { padding: 14px !important; }

  /* 共通設定 管理画面：タブ */
  .lab86-options .nav-tab-wrapper { display: flex !important; flex-wrap: wrap !important; }
  .lab86-options .nav-tab { font-size: 12px !important; padding: 6px 10px !important; }
}

/* 横スクロール完全防止（body全体） */
html, body { overflow-x: hidden !important; max-width: 100% !important; }

/* ===========================
   single-lab86_service.php レスポンシブ（属性セレクタ）
   single-lab86_service.php内のclass未付与に対する保険
=========================== */
@media (max-width: 1024px) {
  body.single-lab86_service #primary [style*="grid-template-columns:2fr 1fr"],
  body.single-lab86_service #primary [style*="grid-template-columns: 2fr 1fr"],
  body.single-lab86_work #primary [style*="grid-template-columns:2fr 1fr"],
  body.single-lab86_work #primary [style*="grid-template-columns: 2fr 1fr"] {
    grid-template-columns: 1fr !important;
    gap: 32px !important;
  }
  body.single-lab86_service #primary aside[style*="position:sticky"],
  body.single-lab86_work #primary aside[style*="position:sticky"] {
    position: static !important; top: auto !important;
  }
}
@media (max-width: 768px) {
  body.single-lab86_service #primary section[style*="linear-gradient(135deg,#001a6e"],
  body.single-lab86_work #primary section[style*="linear-gradient(135deg,#001a6e"] {
    padding: 30px 0 22px !important;
  }
  body.single-lab86_service #primary section[style*="linear-gradient(135deg,#001a6e"] h1,
  body.single-lab86_work #primary section[style*="linear-gradient(135deg,#001a6e"] h1 {
    font-size: clamp(20px, 5.5vw, 26px) !important;
  }
  body.single-lab86_service #primary section[style*="padding:60px 0 80px"] {
    padding: 28px 0 48px !important;
  }
  body.single-lab86_service #primary blockquote[style*="border-left:4px solid #0055b3"] {
    padding: 18px !important; margin: 0 0 24px !important;
  }
  body.single-lab86_service #primary h2[style*="border-left:4px solid"] {
    font-size: 18px !important; padding-left: 12px !important; margin-bottom: 14px !important;
  }
  body.single-lab86_service #primary div[style*="margin-bottom:48px"] { margin-bottom: 28px !important; }
  body.single-lab86_service #primary div[style*="display:flex;gap:20px;padding:24px"] { padding: 16px !important; gap: 12px !important; }
  body.single-lab86_service #primary div[style*="display:flex;gap:20px;padding:24px"] > div:first-child { width: 36px !important; height: 36px !important; }
  body.single-lab86_service #primary div[style*="display:flex;gap:20px;padding:24px"] h3 { font-size: 14px !important; }
  body.single-lab86_service #primary div[style*="display:flex;gap:20px;padding:24px"] p { font-size: 13px !important; }
  body.single-lab86_service #primary div[style*="padding:36px;background:#001a6e"] { padding: 22px 16px !important; }
  body.single-lab86_service #primary div[style*="padding:36px;background:#001a6e"] h2 { font-size: 17px !important; }
  body.single-lab86_service #primary ul li[style*="background:#f7f9fc"] { padding: 12px 14px !important; font-size: 14px !important; }
  body.single-lab86_service #primary details summary { padding: 14px 16px !important; font-size: 14px !important; }
  body.single-lab86_service #primary aside > div { padding: 20px !important; margin-bottom: 14px !important; }
  body.single-lab86_service #primary aside a[style*="display:block"] { padding: 14px 18px !important; font-size: 14px !important; }
}
@media (max-width: 480px) {
  body.single-lab86_service #primary section[style*="linear-gradient(135deg,#001a6e"] { padding: 22px 0 16px !important; }
  body.single-lab86_service #primary section[style*="linear-gradient(135deg,#001a6e"] h1 { font-size: clamp(18px, 6vw, 22px) !important; }
  body.single-lab86_service #primary section[style*="padding:60px 0 80px"] { padding: 20px 0 32px !important; }
  body.single-lab86_service #primary h2[style*="border-left:4px solid"] { font-size: 16px !important; }
  body.single-lab86_service #primary div[style*="display:flex;gap:20px;padding:24px"] { padding: 14px !important; gap: 10px !important; }
  body.single-lab86_service #primary div[style*="padding:36px;background:#001a6e"] { padding: 18px 12px !important; }
  body.single-lab86_service #primary aside > div { padding: 16px !important; }
}

/* ===========================
   ロゴ画像 固定サイズ強制（巨大化バグ対策）
=========================== */
.site-logo img,
.site-logo .custom-logo,
.site-logo a img {
  height: 48px !important;
  width: auto !important;
  max-width: none !important;
  max-height: 48px !important;
  display: block;
}
.footer-logo img,
.footer-logo .custom-logo,
.footer-logo a img {
  height: 44px !important;
  width: auto !important;
  max-width: none !important;
  max-height: 44px !important;
  display: block;
}
@media (max-width: 768px) {
  .site-logo img, .site-logo .custom-logo, .site-logo a img {
    height: 36px !important;
    max-height: 36px !important;
  }
  .footer-logo img, .footer-logo .custom-logo, .footer-logo a img {
    height: 36px !important;
    max-height: 36px !important;
  }
}

/* ===========================
   ハンバーガーメニュー（モバイル時表示）
=========================== */
.menu-toggle, .search-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--color-primary, #001a6e);
}
@media (max-width: 768px) {
  .menu-toggle, .search-toggle {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
  }
  .menu-toggle svg, .search-toggle svg { width: 24px; height: 24px; }
}

/* モバイルメニュー内側のpadding（オーバーレイ自体は150行目で定義済み） */
.mobile-menu-overlay .mobile-menu-inner {
  padding: 70px 24px 40px;
  max-width: 480px;
  margin: 0 auto;
}
.mobile-menu-overlay .mobile-menu-close {
  position: absolute !important;
  top: 16px;
  right: 16px;
  background: rgba(255,255,255,0.12) !important;
  border: 1px solid rgba(255,255,255,0.3) !important;
  border-radius: 50% !important;
  width: 44px !important;
  height: 44px !important;
  color: #fff !important;
  cursor: pointer;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 !important;
}
.mobile-menu-overlay .mobile-menu-close svg { width: 22px; height: 22px; stroke: #fff !important; }
.mobile-menu-overlay ul.mobile-menu,
.mobile-menu-overlay ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

/* 検索オーバーレイ */
.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 26, 110, .95);
  z-index: 9998;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.search-overlay.is-open { display: flex !important; }
.search-overlay-form {
  width: 100%;
  max-width: 560px;
  display: flex;
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
}
.search-overlay-form input[type="search"] {
  flex: 1;
  padding: 16px 20px;
  border: none;
  font-size: 16px;
}
.search-overlay-form button {
  background: var(--color-secondary, #0055b3);
  color: #fff;
  border: none;
  padding: 0 24px;
  cursor: pointer;
}
.search-overlay-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: transparent;
  border: none;
  color: #fff;
  cursor: pointer;
  padding: 8px;
}
.search-overlay-close svg { width: 28px; height: 28px; }

/* ===========================
   Fade-in Animation
=========================== */
.fade-in { opacity: 0; transform: translateY(20px); transition: opacity .5s ease, transform .5s ease; }
.fade-in.is-visible { opacity: 1; transform: translateY(0); }

/* ===========================
   WordPress Core Styles
=========================== */
.wp-caption { max-width: 100%; }
.wp-caption-text { font-size: 13px; color: var(--color-text-secondary); margin-top: 8px; }
.alignleft  { float: left;  margin: 0 24px 16px 0; }
.alignright { float: right; margin: 0 0 16px 24px; }
.aligncenter { display: block; margin: 0 auto 24px; }
.sticky { /* WordPress sticky post */ }
.screen-reader-text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }