/* ===================================================
   BWH総合研究所 - メインスタイルシート（白系権威デザイン）
   =================================================== */

/* ---------- CSS Variables ---------- */
:root {
  /* ライト系・白背景テーマ */
  --color-bg: #f9f9f7;
  --color-bg-2: #f2f4f8;
  --color-bg-dark: #0e1a2e;
  --color-surface: #ffffff;
  --color-surface-2: #f4f6fb;
  --color-surface-3: #eaecf4;
  --color-surface-dark: #0b1730;

  /* テキスト：ネイビー・ダークブルー系 */
  --color-text: #1a2b4a;
  --color-text-muted: #5a6e8e;
  --color-text-light: #ffffff;
  --color-heading: #0d1f3c;
  --color-heading-sub: #1e3a6e;

  /* アクセント：ネイビー・ブルー系 */
  --color-accent-1: #1e3a8a;   /* deep navy */
  --color-accent-2: #2563eb;   /* blue */
  --color-accent-3: #3b82f6;   /* light blue */
  --color-accent-pale: #dbeafe; /* pale blue bg */

  /* ボーダー */
  --color-border: rgba(30,58,138,0.10);
  --color-border-dark: rgba(255,255,255,0.08);

  /* フォント */
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-en: 'Cormorant Garamond', serif;

  --max-width: 1200px;
  --header-h: 72px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.8;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ---------- Utility ---------- */
.section-label-wrap {
  position: absolute;
  top: 60px;
  left: 60px;
  z-index: 2;
}

.section-label-en {
  font-family: var(--font-en);
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 300;
  color: rgba(30,58,138,0.05);
  line-height: 1;
  letter-spacing: 0.02em;
  pointer-events: none;
  user-select: none;
}

.section-label-ja {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.section-label-wrap.light .section-label-en {
  color: rgba(255,255,255,0.06);
}

.btn-outline {
  display: inline-block;
  padding: 12px 40px;
  border: 1px solid rgba(30,58,138,0.35);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  color: var(--color-accent-1);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-outline::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(30,58,138,0.06);
  transform: translateX(-100%);
  transition: var(--transition);
}

.btn-outline:hover::before {
  transform: translateX(0);
}

.btn-outline:hover {
  border-color: rgba(30,58,138,0.6);
}

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  transition: background 0.5s ease, backdrop-filter 0.5s ease, box-shadow 0.5s ease;
}

.site-header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 24px rgba(30,58,138,0.07);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  z-index: 2;
}

.logo-mark {
  font-family: var(--font-en);
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--color-accent-1);
}

.logo-text {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text);
  letter-spacing: 0.05em;
}

/* ヒーロー上ではロゴを白く */
.hero-header .logo-mark {
  color: #fff;
}
.hero-header .logo-text {
  color: rgba(255,255,255,0.85);
}
.hero-header .hamburger span {
  background: #fff;
}

.hamburger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px;
  position: relative;
  z-index: 2;
}

.hamburger span {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--color-text);
  transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== ドロップダウンナビ（右上のみ展開） ===== */
.dropdown-nav {
  position: absolute;
  top: calc(100% + 8px);
  right: 40px;
  width: 220px;
  background: #ffffff;
  border: 1px solid rgba(30,58,138,0.12);
  box-shadow: 0 16px 48px rgba(30,58,138,0.12);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 200;
}

.dropdown-nav.open {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.dropdown-nav ul {
  list-style: none;
  padding: 8px 0;
}

.dropdown-nav ul li a {
  display: block;
  padding: 12px 24px;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-text);
  font-family: var(--font-sans);
  transition: background 0.2s, color 0.2s;
  border-bottom: 1px solid rgba(30,58,138,0.05);
}

.dropdown-nav ul li:last-child a {
  border-bottom: none;
}

.dropdown-nav ul li a:hover {
  background: var(--color-accent-pale);
  color: var(--color-accent-1);
}

/* 旧mobile-navは非表示 */
.mobile-nav {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 300;
  line-height: 1.3;
  margin-bottom: 28px;
}

.hero-title .line1,
.hero-title .line2 {
  display: block;
  font-size: clamp(2.2rem, 6vw, 5rem);
  color: #ffffff;
  text-shadow: 0 2px 32px rgba(30,58,138,0.4);
  letter-spacing: 0.05em;
}

.hero-sub {
  font-size: clamp(0.8rem, 2vw, 1rem);
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.75);
  margin-top: 16px;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  z-index: 2;
}

.hero-scroll-indicator span {
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.4);
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50% { transform: scaleY(1); transform-origin: top; opacity: 1; }
  100% { transform: scaleY(1); transform-origin: bottom; opacity: 0; }
}

/* ---------- Message ---------- */
.message-section {
  position: relative;
  background: var(--color-surface);
  color: var(--color-text);
  padding: 120px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

/* 上部に細い装飾ライン */
.message-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-accent-1), transparent);
  opacity: 0.3;
}

.message-section .section-label-wrap {
  top: 50px;
  left: 40px;
}

.message-section .section-label-en {
  color: rgba(30,58,138,0.04);
}

.message-section .section-label-ja {
  color: var(--color-text-muted);
}

.message-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
  padding-top: 60px;
}

.message-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 500;
  color: var(--color-heading);
  margin-bottom: 36px;
  line-height: 1.5;
}

.message-body p {
  font-size: 0.9rem;
  line-height: 2.1;
  color: var(--color-text);
  margin-bottom: 20px;
}

.message-body p:last-child {
  margin-bottom: 0;
}

.message-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 40px;
}

.message-ring-wrap {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
}

#ring-canvas {
  width: 100%;
  height: 100%;
}

/* ---------- Service ---------- */
.service-section {
  position: relative;
  background: var(--color-bg-2);
  padding: 120px 0 100px;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* 背景に薄いグリッドパターン */
.service-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30,58,138,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,58,138,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.service-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
  padding-top: 80px;
  position: relative;
}

.service-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 16px;
  color: var(--color-heading);
}

.service-sub {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 64px;
  letter-spacing: 0.05em;
}

/* Service Grid: 3+2 layout */
.service-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.service-grid .service-card:nth-child(1) { grid-column: 1 / 3; }
.service-grid .service-card:nth-child(2) { grid-column: 3 / 5; }
.service-grid .service-card:nth-child(3) { grid-column: 5 / 7; }
.service-grid .service-card:nth-child(4) { grid-column: 2 / 4; }
.service-grid .service-card:nth-child(5) { grid-column: 4 / 6; }

.service-card {
  position: relative;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition: var(--transition);
  overflow: hidden;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 12px rgba(30,58,138,0.04);
}

.service-card:hover {
  border-color: rgba(30,58,138,0.3);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(30,58,138,0.10);
}

/* Service card top area: logo + info */
.service-card-top {
  padding: 28px 28px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.service-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.service-logo-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-pale);
  border-radius: 12px;
  padding: 8px;
}

.service-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.service-logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.service-num {
  font-family: var(--font-en);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
}

.service-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-heading);
  line-height: 1.4;
}

.service-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.9;
}

/* Service card image */
.service-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

.service-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .service-card-img img {
  transform: scale(1.05);
}

/* Placeholder image */
.service-card-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.service-card-footer {
  padding: 16px 28px 20px;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.service-link {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--color-accent-2);
  transition: gap 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.service-link:hover {
  gap: 14px;
}

/* ---------- Cases ---------- */
.cases-section {
  position: relative;
  background: var(--color-surface);
  padding: 120px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.cases-section .section-label-en {
  color: rgba(30,58,138,0.04);
}

.cases-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 60px 0;
}

.cases-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 16px;
  color: var(--color-heading);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.case-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(30,58,138,0.04);
}

.case-card:hover {
  border-color: rgba(30,58,138,0.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(30,58,138,0.09);
}

.case-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.case-card:hover .case-card-img img {
  transform: scale(1.05);
}

.case-card-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-3);
}

.case-card-body {
  padding: 24px 24px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.case-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  border: 1px solid rgba(30,58,138,0.25);
  color: var(--color-accent-1);
  margin-bottom: 14px;
  align-self: flex-start;
  background: var(--color-accent-pale);
}

.case-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-heading);
  margin-bottom: 12px;
  line-height: 1.6;
}

.case-body {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  flex: 1;
}

.case-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--color-accent-2);
  letter-spacing: 0.08em;
  margin-top: 16px;
  transition: gap 0.3s;
}

.case-link:hover { gap: 12px; }

.cases-cta {
  text-align: center;
  margin-top: 56px;
}

/* ---------- Knowledge ---------- */
.knowledge-section {
  position: relative;
  background: var(--color-bg-2);
  padding: 120px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

/* 背景に薄いドットパターン */
.knowledge-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(30,58,138,0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
}

.knowledge-section .section-label-en {
  color: rgba(30,58,138,0.04);
}

.knowledge-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 60px 0;
  position: relative;
}

.knowledge-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-heading);
}

.knowledge-sub {
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 56px;
  letter-spacing: 0.05em;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.knowledge-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(30,58,138,0.04);
}

.knowledge-card:hover {
  border-color: rgba(30,58,138,0.25);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(30,58,138,0.09);
}

.knowledge-card-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}

.knowledge-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.knowledge-card:hover .knowledge-card-img img {
  transform: scale(1.05);
}

.knowledge-card-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-3);
}

.knowledge-card-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.knowledge-date {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.knowledge-tag {
  display: inline-block;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  background: var(--color-accent-pale);
  color: var(--color-accent-1);
  border: 1px solid rgba(30,58,138,0.2);
  margin-bottom: 12px;
  align-self: flex-start;
}

.knowledge-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-heading);
  margin-bottom: 10px;
  line-height: 1.7;
  flex: 1;
}

.knowledge-excerpt {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.9;
  margin-bottom: 14px;
}

.knowledge-link {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--color-accent-2);
  transition: opacity 0.3s;
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.knowledge-link:hover {
  opacity: 0.7;
}

.knowledge-cta {
  text-align: center;
  margin-top: 56px;
}

/* ---------- Company ---------- */
.company-section {
  position: relative;
  background: var(--color-surface);
  padding: 120px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.company-section .section-label-en {
  color: rgba(30,58,138,0.04);
}

.company-inner {
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 60px 0;
}

.company-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 56px;
  color: var(--color-heading);
}

.company-table {
  width: 100%;
  border-collapse: collapse;
}

.company-table tr {
  border-bottom: 1px solid var(--color-border);
}

.company-table th {
  width: 140px;
  padding: 24px 0;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-accent-1);
  text-align: left;
  vertical-align: top;
}

.company-table td {
  padding: 24px 0 24px 32px;
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.8;
}

/* ---------- Contact ---------- */
.contact-section {
  position: relative;
  background: var(--color-bg-dark);
  padding: 120px 0 100px;
  overflow: hidden;
}

.contact-bg-canvas-wrap {
  position: absolute;
  inset: 0;
  z-index: 0;
}

#contact-canvas {
  width: 100%;
  height: 100%;
}

.contact-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
  padding: 80px 40px 0;
}

.contact-section .section-label-wrap {
  position: relative;
  top: auto;
  left: auto;
  margin-bottom: 40px;
}

.contact-section .section-label-en {
  color: rgba(255,255,255,0.05);
}

.contact-section .section-label-ja {
  color: rgba(255,255,255,0.4);
}

.contact-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 400;
  text-align: center;
  margin-bottom: 16px;
  color: #ffffff;
}

.contact-sub {
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.55);
  margin-bottom: 56px;
  line-height: 1.9;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-group label {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.55);
  display: flex;
  align-items: center;
  gap: 8px;
}

.required {
  font-size: 0.65rem;
  padding: 2px 6px;
  background: rgba(37,99,235,0.2);
  color: #93c5fd;
  border: 1px solid rgba(37,99,235,0.4);
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  color: #ffffff;
  padding: 14px 18px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.3s;
  -webkit-appearance: none;
  appearance: none;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ffffff' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: rgba(59,130,246,0.5);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255,255,255,0.2);
}

.form-group textarea {
  resize: vertical;
  min-height: 160px;
}

.form-submit {
  text-align: center;
  margin-top: 16px;
}

.btn-submit {
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
  color: white;
  border: none;
  padding: 16px 64px;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  letter-spacing: 0.15em;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.3s;
}

.btn-submit:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 60px 0 40px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-logo .logo-mark {
  color: rgba(255,255,255,0.8);
}

.footer-logo .logo-text {
  color: rgba(255,255,255,0.6);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
  justify-content: center;
}

.footer-nav a {
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.4);
  transition: color 0.3s;
}

.footer-nav a:hover {
  color: rgba(255,255,255,0.8);
}

.footer-copy {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.2);
}

/* ---------- Scroll Animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* other-service-bannerはfade-upのtransformを上書き */
.other-service-banner.fade-up {
  transform: translateY(32px);
}
.other-service-banner.fade-up.visible {
  transform: translateY(0);
}
.other-service-banner.fade-up.visible:hover {
  transform: translateY(-6px);
}

/* ---------- Inner page styles ---------- */
.page-hero {
  position: relative;
  padding: calc(var(--header-h) + 80px) 0 80px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(30,58,138,0.04) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
  position: relative;
  z-index: 1;
}

.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.page-breadcrumb a {
  color: var(--color-accent-2);
  transition: opacity 0.3s;
}

.page-breadcrumb a:hover { opacity: 0.7; }
.page-breadcrumb span { color: var(--color-text-muted); }

.page-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--color-heading);
  margin-bottom: 16px;
  line-height: 1.4;
}

.page-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

/* List page */
.list-section {
  padding: 80px 0 100px;
  background: var(--color-bg);
}

.list-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 60px;
}

.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 48px;
}

/* Detail page */
.detail-section {
  padding: 80px 0 120px;
  background: var(--color-bg);
}

.detail-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 60px;
}

.detail-hero-img {
  width: 100%;
  aspect-ratio: 16/7;
  overflow: hidden;
  margin-bottom: 48px;
  border: 1px solid var(--color-border);
}

.detail-hero-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-hero-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-3);
}

.detail-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.detail-date {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

.detail-tag {
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 3px 10px;
  background: var(--color-accent-pale);
  color: var(--color-accent-1);
  border: 1px solid rgba(30,58,138,0.2);
}

.detail-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 500;
  color: var(--color-heading);
  line-height: 1.5;
  margin-bottom: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}

.detail-body {
  font-size: 0.9rem;
  line-height: 2.1;
  color: var(--color-text);
}

.detail-body h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--color-heading);
  margin: 48px 0 20px;
  padding-left: 16px;
  border-left: 3px solid var(--color-accent-1);
}

.detail-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-accent-1);
  margin: 32px 0 14px;
}

.detail-body p {
  margin-bottom: 20px;
  color: var(--color-text);
}

.detail-body ul, .detail-body ol {
  margin: 16px 0 24px 24px;
}

.detail-body li {
  margin-bottom: 8px;
  color: var(--color-text);
}

.detail-body blockquote {
  border-left: 3px solid var(--color-accent-1);
  padding: 16px 24px;
  margin: 24px 0;
  background: var(--color-accent-pale);
  color: var(--color-text-muted);
  font-style: italic;
}

.detail-back {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

/* Service detail */
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  margin-top: 48px;
}

.service-detail-logo {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.service-detail-logo-icon {
  width: 64px;
  height: 64px;
}

.service-detail-logo-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.service-detail-logo-text h1 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-heading);
  margin-bottom: 4px;
}

.service-detail-logo-text p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
}

.service-detail-body {
  font-size: 0.9rem;
  line-height: 2.1;
  color: var(--color-text);
}

.service-detail-body p {
  margin-bottom: 20px;
}

.service-detail-body h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-accent-1);
  margin: 28px 0 12px;
}

.service-detail-body ul {
  margin: 0 0 20px 20px;
}

.service-detail-body li {
  margin-bottom: 8px;
  color: var(--color-text);
}

.service-detail-img {
  width: 100%;
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.service-detail-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-detail-img-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-3);
}

.service-cta-box {
  margin-top: 60px;
  padding: 48px;
  background: var(--color-accent-pale);
  border: 1px solid rgba(30,58,138,0.15);
  text-align: center;
}

.service-cta-box h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-heading);
  margin-bottom: 12px;
}

.service-cta-box p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

/* Placeholder SVG styles */
.placeholder-svg {
  width: 48px;
  height: 48px;
  opacity: 0.15;
  color: var(--color-accent-1);
}

/* ---------- Filter buttons (list pages) ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 0;
}

.filter-btn {
  padding: 8px 20px;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.3s;
  font-family: var(--font-sans);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--color-accent-1);
  border-color: var(--color-accent-1);
  color: #ffffff;
}

/* ---------- Pagination ---------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 64px;
}

.pagination a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: all 0.3s;
}

.pagination a.active,
.pagination a:hover {
  background: var(--color-accent-1);
  border-color: var(--color-accent-1);
  color: #ffffff;
}

/* ---------- Sidebar (service detail) ---------- */
.sidebar {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 28px;
}

.sidebar-title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-list {
  list-style: none;
}

.sidebar-list li {
  border-bottom: 1px solid var(--color-border);
}

.sidebar-list li:last-child {
  border-bottom: none;
}

.sidebar-list li a {
  display: block;
  padding: 12px 0;
  font-size: 0.82rem;
  color: var(--color-text);
  transition: color 0.3s;
}

.sidebar-list li a:hover {
  color: var(--color-accent-2);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-grid .service-card:nth-child(1),
  .service-grid .service-card:nth-child(2),
  .service-grid .service-card:nth-child(3),
  .service-grid .service-card:nth-child(4),
  .service-grid .service-card:nth-child(5) {
    grid-column: auto;
  }
  .cases-grid,
  .knowledge-grid,
  .list-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-detail-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .section-label-wrap {
    top: 30px;
    left: 24px;
  }

  .message-inner {
    grid-template-columns: 1fr;
    padding: 40px 24px 0;
    gap: 48px;
  }

  .message-visual {
    display: none;
  }

  .service-inner,
  .cases-inner,
  .knowledge-inner,
  .company-inner {
    padding: 60px 24px 0;
  }

  .service-grid {
    grid-template-columns: 1fr;
  }

  .service-grid .service-card:nth-child(1),
  .service-grid .service-card:nth-child(2),
  .service-grid .service-card:nth-child(3),
  .service-grid .service-card:nth-child(4),
  .service-grid .service-card:nth-child(5) {
    grid-column: auto;
  }

  .cases-grid,
  .knowledge-grid,
  .list-grid {
    grid-template-columns: 1fr;
  }

  .company-table th {
    width: 100px;
  }

  .contact-inner {
    padding: 60px 24px 0;
  }

  .footer-inner {
    padding: 0 24px;
  }

  .footer-nav {
    gap: 8px 20px;
  }

  .list-inner,
  .detail-inner,
  .page-hero-inner {
    padding: 0 24px;
  }

  .service-cta-box {
    padding: 32px 24px;
  }

  .dropdown-nav {
    right: 16px;
    width: 200px;
  }
}

/* =================================================
   追加スタイル：知見ジャンル別・関連事業・Founder
   ================================================= */

/* ---------- Service Grid 3列 ---------- */
.service-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}
.service-grid-3 .service-card {
  grid-column: auto !important;
}
@media (max-width: 1024px) {
  .service-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .service-grid-3 .service-card:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }
}
@media (max-width: 768px) {
  .service-grid-3 {
    grid-template-columns: 1fr;
  }
  .service-grid-3 .service-card:nth-child(3) {
    grid-column: auto;
    max-width: 100%;
    margin: 0;
  }
}

/* ---------- Case Tag Colors ---------- */
.case-tag--strategy {
  background: rgba(30,58,138,0.08);
  border-color: rgba(30,58,138,0.3);
  color: #1e3a8a;
}
.case-tag--hr {
  background: rgba(5,150,105,0.08);
  border-color: rgba(5,150,105,0.3);
  color: #065f46;
}
.case-tag--ai {
  background: rgba(3,105,161,0.08);
  border-color: rgba(3,105,161,0.3);
  color: #0369a1;
}

/* ---------- Knowledge Genre Block ---------- */
.knowledge-genre-block {
  margin-bottom: 64px;
  padding-bottom: 64px;
  border-bottom: 1px solid var(--color-border);
}
.knowledge-genre-block:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.knowledge-genre-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.knowledge-genre-tag {
  display: inline-block;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  padding: 4px 12px;
  border: 1px solid;
  font-family: var(--font-sans);
}
.knowledge-genre-tag--strategy {
  background: rgba(30,58,138,0.07);
  border-color: rgba(30,58,138,0.25);
  color: #1e3a8a;
}
.knowledge-genre-tag--hr {
  background: rgba(5,150,105,0.07);
  border-color: rgba(5,150,105,0.25);
  color: #065f46;
}
.knowledge-genre-tag--ai {
  background: rgba(3,105,161,0.07);
  border-color: rgba(3,105,161,0.25);
  color: #0369a1;
}
.knowledge-genre-tag--lecture {
  background: rgba(124,58,237,0.07);
  border-color: rgba(124,58,237,0.25);
  color: #5b21b6;
}

.knowledge-genre-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-heading);
}

.knowledge-genre-more {
  margin-left: auto;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--color-accent-2);
  transition: opacity 0.3s;
}
.knowledge-genre-more:hover { opacity: 0.7; }

/* Featured card (横並び) */
.knowledge-card-featured {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 2px 12px rgba(30,58,138,0.04);
}
.knowledge-card-featured:hover {
  border-color: rgba(30,58,138,0.25);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(30,58,138,0.09);
}

.knowledge-card-featured-img {
  width: 100%;
  height: 100%;
  min-height: 200px;
  overflow: hidden;
  position: relative;
}
.knowledge-card-featured-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.knowledge-card-featured:hover .knowledge-card-featured-img img {
  transform: scale(1.05);
}
.knowledge-card-img-placeholder {
  width: 100%;
  height: 100%;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-3);
}

.knowledge-card-featured-body {
  padding: 28px 32px;
  display: flex;
  flex-direction: column;
}
.knowledge-card-featured-body .knowledge-date {
  margin-bottom: 6px;
}
.knowledge-card-featured-body .knowledge-tag {
  margin-bottom: 14px;
}
.knowledge-card-featured-body .knowledge-title {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 12px;
  flex: 1;
}
.knowledge-card-featured-body .knowledge-excerpt {
  font-size: 0.82rem;
  margin-bottom: 16px;
}

@media (max-width: 768px) {
  .knowledge-card-featured {
    grid-template-columns: 1fr;
  }
  .knowledge-card-featured-img {
    min-height: 180px;
    aspect-ratio: 16/9;
    height: auto;
  }
  .knowledge-card-featured-body {
    padding: 20px 20px 24px;
  }
  .knowledge-genre-more {
    margin-left: 0;
    width: 100%;
  }
}

/* ---------- Other Services Section ---------- */
.other-services-section {
  position: relative;
  background: var(--color-bg-dark);
  padding: 120px 0 100px;
  overflow: hidden;
}

.other-services-section .section-label-en {
  color: rgba(255,255,255,0.04);
}
.other-services-section .section-label-ja {
  color: rgba(255,255,255,0.4);
}

.other-services-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 60px 0;
  position: relative;
}

.other-services-heading {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 500;
  text-align: center;
  margin-bottom: 12px;
  color: #ffffff;
}

.other-services-sub {
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 56px;
  letter-spacing: 0.05em;
}

.other-services-banners {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  align-items: stretch;
}

.other-service-banner {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 400px;
  height: 100%;
  text-decoration: none;
  transition: opacity 0.8s ease, transform 0.5s ease, box-shadow 0.5s ease;
}
.other-service-banner:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.4);
}

.other-service-banner-bg {
  position: absolute;
  inset: 0;
  transition: transform 0.6s ease;
}
.other-service-banner:hover .other-service-banner-bg {
  transform: scale(1.04);
}

.other-service-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(0,0,0,0.05) 0%,
    rgba(0,0,0,0.35) 100%
  );
}

.other-service-banner-content {
  position: relative;
  z-index: 2;
  padding: 48px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.other-service-banner-label {
  font-family: var(--font-en);
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.5);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.other-service-banner-title {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 500;
  color: #ffffff;
  line-height: 1.4;
  margin-bottom: 16px;
}

.other-service-banner-subtitle {
  font-size: 0.85em;
  opacity: 0.75;
}

.other-service-banner-desc {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.9;
  margin-bottom: 24px;
  max-width: 480px;
  flex-grow: 1;
}

.other-service-banner-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.3);
  padding-bottom: 4px;
  transition: gap 0.3s, border-color 0.3s;
}
.other-service-banner:hover .other-service-banner-cta {
  gap: 14px;
  border-color: rgba(255,255,255,0.7);
}
.other-service-banner-cta .arrow {
  transition: transform 0.3s;
}
.other-service-banner:hover .other-service-banner-cta .arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .other-services-banners {
    grid-template-columns: 1fr;
  }
  .other-service-banner {
    min-height: 280px;
  }
  .other-service-banner-content {
    padding: 32px 24px;
  }
  .other-services-inner {
    padding: 60px 24px 0;
  }
}

/* ---------- Founder Section ---------- */
.founder-section {
  position: relative;
  background: var(--color-surface);
  padding: 120px 0 100px;
  overflow: hidden;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* 薄いグリッドパターン */
.founder-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(30,58,138,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30,58,138,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.founder-section .section-label-en {
  color: rgba(30,58,138,0.04);
}

.founder-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 80px 60px 0;
  position: relative;
}

.founder-layout {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 80px;
  align-items: center;
}

.founder-img-wrap {
  position: relative;
}
.founder-img-wrap::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 20px;
  right: -20px;
  bottom: -20px;
  border: 1px solid var(--color-border);
  z-index: 0;
}
.founder-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: center top;
  display: block;
  position: relative;
  z-index: 1;
  filter: grayscale(15%);
}

.founder-text {}

.founder-name-block {
  margin-bottom: 32px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--color-border);
}

.founder-name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  color: var(--color-heading);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.founder-name-en {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 300;
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
}

.founder-bio {
  margin-bottom: 32px;
}
.founder-bio p {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 2.1;
  margin-bottom: 16px;
}
.founder-bio p:last-child { margin-bottom: 0; }

.founder-links {
  display: flex;
  align-items: center;
  gap: 16px;
}
.founder-link-item {
  font-family: var(--font-en);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color 0.3s;
}
.founder-link-item:hover { color: var(--color-accent-2); }
.founder-link-sep {
  color: var(--color-border);
  font-size: 0.9rem;
}

@media (max-width: 1024px) {
  .founder-layout {
    grid-template-columns: 320px 1fr;
    gap: 48px;
  }
}
@media (max-width: 768px) {
  .founder-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .founder-img-wrap::before {
    top: 12px; left: 12px; right: -12px; bottom: -12px;
  }
  .founder-inner {
    padding: 60px 24px 0;
  }
}

/* =================================================
   レスポンシブ強化 (スマートフォン対応)
   ================================================= */

/* ---- 480px以下（スマホ縦向き） ---- */
@media (max-width: 480px) {
  /* ヘッダー */
  .header-inner {
    padding: 0 16px;
  }
  .logo-text {
    display: none; /* ロゴテキストを省略してロゴマークのみ表示 */
  }
  .dropdown-nav {
    right: 8px;
    width: calc(100vw - 16px);
    max-width: 320px;
  }

  /* ヒーロー */
  .hero-title .line1,
  .hero-title .line2 {
    font-size: clamp(1.6rem, 8vw, 2.5rem);
  }
  .hero-sub {
    font-size: 0.75rem;
    letter-spacing: 0.08em;
  }

  /* Messageセクション */
  .message-section {
    padding: 80px 0 60px;
  }
  .message-inner {
    padding: 32px 16px 0;
    gap: 32px;
  }
  .message-heading {
    font-size: 1.3rem;
  }

  /* Serviceセクション */
  .service-section {
    padding: 80px 0 60px;
  }
  .service-inner {
    padding: 48px 16px 0;
  }

  /* Casesセクション */
  .cases-section {
    padding: 80px 0 60px;
  }
  .cases-inner {
    padding: 48px 16px 0;
  }

  /* Knowledgeセクション */
  .knowledge-section {
    padding: 80px 0 60px;
  }
  .knowledge-inner {
    padding: 48px 16px 0;
  }

  /* Companyセクション */
  .company-section {
    padding: 80px 0 60px;
  }
  .company-inner {
    padding: 48px 16px 0;
  }
  /* 会社概要テーブルをスタック表示 */
  .company-table,
  .company-table tbody,
  .company-table tr,
  .company-table th,
  .company-table td {
    display: block;
    width: 100%;
  }
  .company-table tr {
    margin-bottom: 16px;
    border-bottom: none;
  }
  .company-table th {
    padding: 12px 0 4px;
    width: 100%;
    border-bottom: none;
    color: var(--color-accent-1);
    font-size: 0.75rem;
  }
  .company-table td {
    padding: 0 0 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.85rem;
  }

  /* Contactセクション */
  .contact-section {
    padding: 80px 0 60px;
  }
  .contact-inner {
    padding: 48px 16px 0;
  }
  .btn-submit {
    width: 100%;
    padding: 16px 24px;
  }

  /* Other Servicesセクション */
  .other-services-section {
    padding: 80px 0 60px;
  }
  .other-services-inner {
    padding: 48px 16px 0;
  }
  .other-service-banner {
    min-height: 240px;
  }
  .other-service-banner-content {
    padding: 24px 20px;
  }
  .other-service-banner-title {
    font-size: 1.1rem;
  }

  /* Founderセクション */
  .founder-section {
    padding: 80px 0 60px;
  }
  .founder-inner {
    padding: 48px 16px 0;
  }
  .founder-img-wrap::before {
    display: none;
  }

  /* フッター */
  .footer-inner {
    padding: 0 16px;
  }
  .footer-nav {
    gap: 8px 16px;
  }
  .footer-nav a {
    font-size: 0.75rem;
  }

  /* ページ内部（list/detail/service-detail） */
  .page-hero-inner,
  .list-inner,
  .detail-inner {
    padding: 0 16px;
  }
  .detail-inner {
    padding: 0 16px;
  }
  .detail-body h2 {
    font-size: 1.1rem;
  }
  .detail-body h3 {
    font-size: 0.95rem;
  }
  .service-cta-box {
    padding: 28px 16px;
  }
  .service-cta-box h3 {
    font-size: 1rem;
  }

  /* セクションラベル */
  .section-label-wrap {
    top: 20px;
    left: 16px;
  }
  .section-label-en {
    font-size: clamp(2rem, 10vw, 3.5rem);
  }
}

/* ---- 768px以下（スマホ横向き・タブレット縦向き）の追加修正 ---- */
@media (max-width: 768px) {
  /* ヘッダーpadding */
  .header-inner {
    padding: 0 20px;
  }

  /* ページヒーロー */
  .page-hero {
    padding: calc(var(--header-h) + 48px) 0 48px;
  }
  .page-title {
    font-size: clamp(1.4rem, 5vw, 2rem);
  }

  /* 会社概要テーブルのth幅を縮小 */
  .company-table th {
    width: 90px;
    font-size: 0.78rem;
  }
  .company-table td {
    padding: 16px 0 16px 16px;
    font-size: 0.85rem;
  }

  /* service-detail-grid（サービス詳細ページ） */
  .service-detail-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* filter-bar */
  .filter-bar {
    gap: 6px;
  }
  .filter-btn {
    padding: 7px 14px;
    font-size: 0.72rem;
  }

  /* knowledge-genre-header */
  .knowledge-genre-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .knowledge-genre-more {
    margin-left: 0;
  }

  /* section padding */
  .message-section,
  .service-section,
  .cases-section,
  .knowledge-section,
  .company-section,
  .contact-section,
  .other-services-section,
  .founder-section {
    padding-top: 80px;
    padding-bottom: 60px;
  }
}

/* ===== COMING SOON (Knowledge Section) ===== */
.knowledge-coming-soon {
  text-align: center;
  padding: 80px 20px;
  border: 1px dashed var(--color-border);
  border-radius: 4px;
  margin-top: 32px;
}
.coming-soon-icon {
  margin-bottom: 20px;
  opacity: 0.35;
  color: var(--color-text-muted);
}
.coming-soon-label {
  font-family: var(--font-en);
  font-size: 1.5rem;
  letter-spacing: 0.25em;
  color: var(--color-accent-2);
  margin-bottom: 16px;
  font-weight: 300;
}
.coming-soon-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 2;
}

/* ===== COMING SOON (Knowledge Section) ===== */
.knowledge-coming-soon {
  text-align: center;
  padding: 80px 20px;
  border: 1px dashed var(--color-border);
  border-radius: 4px;
  margin-top: 32px;
}
.coming-soon-icon {
  margin-bottom: 20px;
  opacity: 0.35;
  color: var(--color-text-muted);
}
.coming-soon-label {
  font-family: var(--font-en);
  font-size: 1.5rem;
  letter-spacing: 0.25em;
  color: var(--color-accent-2);
  margin-bottom: 16px;
  font-weight: 300;
}
.coming-soon-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 2;
}