/* =================================
   Base Styles
   ================================= */
body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.75;
  color: var(--text-dark);
  background-color: var(--bg-mint);
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* =================================
   Typography
   ================================= */
h1, h2, h3, h4, h5, h6 {
  color: var(--primary-navy);
  line-height: 1.3;
  font-weight: 700;
}

.section-title {
  font-size: var(--font-size-4xl);
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-light);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

/* =================================
   Header
   ================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.97);
  border-bottom: 1px solid rgba(26, 158, 135, 0.15);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-height, 64px);
  gap: 24px;
}

.header-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo-img {
  height: 26px;
  width: auto;
  display: block;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: 4px;
  padding: 0;
  margin: 0;
}

.main-nav li a {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 8px;
  text-decoration: none;
  gap: 1px;
}

.nav-ja {
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--primary-navy, #1C2B3A);
  white-space: nowrap;
}

.nav-en {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--primary-teal, #1A9E87);
  white-space: nowrap;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
}

.header-contact-info {
  display: flex;
  flex-direction: column;
  font-size: 0.62rem;
  color: var(--text-secondary, #666);
  line-height: 1.4;
  text-align: right;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  background: var(--primary-teal, #1A9E87);
  color: white;
  padding: 8px 14px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

/* =================================
   Hamburger Button
   ================================= */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: 8px;
  flex-shrink: 0;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--primary-navy, #1C2B3A);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.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);
}

@media (max-width: 768px) {
  .header-contact-info {
    display: none;
  }
  .hamburger {
    display: flex;
  }
  .main-nav {
    display: none;
    position: fixed;
    top: var(--header-height, 64px);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    z-index: 999;
    padding: 16px 0;
  }
  .main-nav.active {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 0;
  }
  .main-nav li a {
    flex-direction: row;
    justify-content: flex-start;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-size: 0.9rem;
  }
  .nav-ja {
    font-size: 0.9rem;
  }
  .nav-en {
    font-size: 0.7rem;
    color: var(--primary-teal, #1A9E87);
  }
  .header-right {
    margin-left: auto;
  }

  .hero-content {
    grid-template-columns: 1fr;
    min-height: 0;
    padding-bottom: 32px;
  }
  .hero-visual {
    display: none;
  }
  .hero-img-sub {
    display: none;
  }
  .hero {
    min-height: auto;
    padding-bottom: 20px;
  }
}

/* =================================
   Hero
   ================================= */
.hero {
  position: relative;
  min-height: 80vh;
  padding: calc(var(--header-height, 64px) + 40px) 0 0;
  background:
    radial-gradient(circle at 26% 56%, rgba(255,255,255,0.3) 0, transparent 44%),
    linear-gradient(160deg, #d4f0e8 0%, #e8f5f2 50%, #c8eade 100%);
  overflow: hidden;
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  min-height: 480px;
  padding-bottom: 60px;
}

.hero-copy {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-title {
  font-size: clamp(2rem, 3.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--primary-navy, #1C2B3A);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.hero-title-accent {
  display: block;
  position: relative;
  color: var(--primary-teal, #1A9E87);
}

.hero-title-accent::before {
  content: '';
  position: absolute;
  left: -4px;
  right: -4px;
  top: 0;
  bottom: 0;
  background: rgba(26, 158, 135, 0.12);
  z-index: -1;
}

.hero-kicker {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-secondary, #777);
  margin-bottom: 28px;
  line-height: 1.8;
  text-transform: uppercase;
}

.hero-cta-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-cta-primary {
  display: inline-flex;
  align-items: center;
  background: var(--primary-teal, #1A9E87);
  color: white;
  padding: 13px 24px;
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
}

.hero-cta-primary:hover {
  background: #158370;
  transform: translateY(-2px);
}

.hero-cta-secondary {
  display: inline-flex;
  align-items: center;
  background: transparent;
  color: var(--primary-navy, #1C2B3A);
  padding: 12px 24px;
  border: 2px solid rgba(26, 32, 64, 0.25);
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s;
}

.hero-cta-secondary:hover {
  border-color: var(--primary-teal, #1A9E87);
  color: var(--primary-teal, #1A9E87);
}

.hero-visual {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 740px;
  height: 600px;
  margin-left: auto;
}

.hero-img-main {
  position: absolute;
  top: 0;
  right: -48px;
  width: 720px;
  height: 474px;
  overflow: hidden;
  z-index: 1;
}

.hero-img-sub {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 720px;
  height: 296px;
  overflow: hidden;
  z-index: 1;
}

.hero-blob-bg {
  position: absolute;
  bottom: 60px;
  right: -28px;
  width: 90px;
  height: 90px;
  background: var(--primary-teal, #1A9E87);
  border-radius: 50%;
  opacity: 0.75;
  z-index: 0;
}

.hero-edu-copy {
  position: absolute;
  right: 6px;
  bottom: 26px;
  width: min(380px, 100%);
  z-index: 3;
  text-align: right;
}

.hero-edu-title {
  margin: 0;
  font-size: clamp(1.9rem, 3vw, 3rem);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--primary-navy, #1C2B3A);
}

.hero-edu-title-accent {
  display: inline-block;
  position: relative;
  color: #4778B8;
}

.hero-edu-title-accent::before {
  content: '';
  position: absolute;
  left: -4px;
  right: -4px;
  top: 0;
  bottom: 0;
  background: rgba(71, 120, 184, 0.14);
  z-index: -1;
}

.hero-edu-btn {
  display: inline-block;
  margin-top: 10px;
  padding: 7px 16px;
  background: #4778B8;
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 4px;
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: opacity 0.2s;
}

.hero-edu-btn:hover {
  opacity: 0.85;
}

@media (max-width: 980px) {
  .hero-edu-copy { display: none; }
}

/* ニュースバー */
.news-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid rgba(26, 158, 135, 0.2);
  padding: 10px var(--container-padding, 24px);
  font-size: 0.75rem;
  color: var(--text-secondary, #555);
  margin-top: 24px;
}

.news-label {
  background: var(--primary-teal, #1A9E87);
  color: white;
  padding: 2px 10px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 0.7rem;
  white-space: nowrap;
}

.news-date {
  font-weight: 600;
  color: var(--primary-navy, #1C2B3A);
  white-space: nowrap;
}

.news-text {
  flex: 1;
}

.news-link {
  margin-left: auto;
  color: var(--primary-teal, #1A9E87);
  text-decoration: none;
  font-weight: 600;
  white-space: nowrap;
}

/* フローティングCTAボタン */
.floating-cta {
  position: fixed;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary-teal, #1A9E87);
  color: white;
  writing-mode: vertical-rl;
  padding: 16px 10px;
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 700;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  border-radius: 4px 0 0 4px;
  letter-spacing: 0.05em;
}

/* Hero helpers */
.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

.hero-description {
  max-width: 760px;
  margin: 0 auto var(--spacing-lg);
  font-size: var(--font-size-lg);
  line-height: 1.9;
  color: var(--text-secondary);
}

.hero-highlights {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--spacing-xl);
}

.hero-highlights span {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  background: rgba(45, 153, 112, 0.08);
  color: var(--primary-navy);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.impact-numbers {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.impact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.big-number {
  font-size: var(--font-size-6xl);
  font-weight: 900;
  color: var(--primary-teal);
  line-height: 1;
}

.big-number .unit {
  font-size: var(--font-size-3xl);
}

.impact-item .label {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-top: var(--spacing-xs);
}

/* CTA Buttons */
.cta-group {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.cta-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-teal);
  color: var(--white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  min-height: 56px;
  border: none;
  cursor: pointer;
}

.cta-primary:hover {
  background: var(--primary-teal-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  color: var(--primary-teal);
  padding: var(--spacing-md) var(--spacing-xl);
  border: 2px solid var(--primary-teal);
  border-radius: var(--radius-md);
  font-size: var(--font-size-lg);
  font-weight: 600;
  transition: all var(--transition-normal);
  min-height: 56px;
}

.cta-secondary:hover {
  background: var(--primary-teal);
  color: var(--white);
}

@media (max-width: 980px) {
  .hero-content {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: var(--spacing-lg);
    padding-bottom: 0;
  }

  .hero-visual {
    height: 320px;
    order: -1;
  }

  .hero-img-sub {
    display: none;
  }
}

@media (max-width: 767px) {
  html, body {
    overflow-x: hidden;
  }

  .hero {
    padding-top: var(--header-height);
    min-height: 0;
    padding-bottom: 0;
  }

  .hero-content {
    gap: 12px;
  }

  .hero-title {
    font-size: clamp(1.8rem, 8vw, 2.8rem);
  }

  /* モバイル: hero画像を矩形フルワイド表示（雲型切り抜きなし）+ 教育テキスト復活 */
  .hero-visual {
    display: block;
    position: relative;
    width: calc(100% + 32px);
    margin-left: -16px;
    height: auto;
    margin-top: 0;
  }

  .hero-img-main {
    position: static;
    width: 100%;
    height: 220px;
    right: auto;
    border-radius: 0;
  }

  .hero-img-main svg image {
    clip-path: none;
  }

  .hero-blob-bg {
    display: none;
  }

  .hero-edu-copy {
    display: block;
    position: absolute;
    right: 10px;
    bottom: 10px;
    width: auto;
    text-align: right;
  }

  .hero-edu-title {
    font-size: clamp(1.2rem, 5vw, 1.6rem);
    text-shadow: 0 1px 4px rgba(0,0,0,0.3);
    color: #fff;
  }

  .hero-edu-title-accent {
    color: #fff;
  }

  .hero-edu-title-accent::before {
    background: rgba(71, 120, 184, 0.4);
  }

  .hero-edu-btn {
    font-size: 0.65rem;
    padding: 5px 12px;
  }

  /* モバイルでは下側の切り抜き画像を非表示 */
  .hero-img-sub {
    display: none;
  }

  /* ニュースバー: テキストを折り返し */
  .news-bar {
    flex-wrap: wrap;
    gap: 6px 12px;
    padding: 8px 16px;
    margin-top: 24px;
  }
  .news-text {
    flex-basis: 100%;
    order: 3;
  }
  .news-link {
    order: 4;
    margin-left: 0;
  }

  .hero-copy {
    align-items: flex-start;
  }

  .floating-cta {
    display: none;
  }

  .impact-numbers {
    gap: var(--spacing-lg);
  }

  .big-number {
    font-size: var(--font-size-4xl);
  }

  .big-number .unit {
    font-size: var(--font-size-xl);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-highlights {
    gap: 10px;
  }

  .cta-group {
    flex-direction: column;
  }

  .cta-primary,
  .cta-secondary {
    width: 100%;
  }
}

/* =================================
   Work Style
   ================================= */
.work-style {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(160deg, #e0f5ee 0%, #eaf8f3 45%, #ffffff 100%);
}

.work-diagram {
  margin-top: var(--spacing-xl);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid rgba(26, 54, 93, 0.08);
  border-radius: 28px;
  padding: clamp(20px, 3.5vw, 36px);
  box-shadow: 0 22px 48px rgba(16, 37, 74, 0.09);
}

.diagram-track {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: var(--spacing-md);
}

.diagram-step {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 16px 10px 18px;
  color: var(--white);
  font-size: clamp(0.86rem, 1.5vw, 1.02rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  background: linear-gradient(135deg, #76b100 0%, #5a9800 100%);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 50%, calc(100% - 18px) 100%, 0 100%, 12px 50%);
}

.diagram-step:first-child {
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 50%, calc(100% - 18px) 100%, 0 100%);
}

.diagram-step.step-observe {
  background: linear-gradient(135deg, #1198b4 0%, #0a788f 100%);
}

.diagram-step.step-build {
  background: linear-gradient(135deg, #ff9c2b 0%, #f07513 100%);
}

.step-id {
  font-size: 0.76em;
  opacity: 0.8;
  font-weight: 800;
}

.diagram-roles {
  display: grid;
  grid-template-columns: 1.05fr 2.1fr 1.1fr;
  gap: 10px;
  margin-top: var(--spacing-xl);
  background: #20252f;
  border-radius: 14px;
  padding: 10px;
  margin-bottom: var(--spacing-lg);
}

.role-chip {
  min-height: 56px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1rem, 2vw, 1.1rem);
  font-weight: 800;
  color: var(--white);
}

.role-user {
  background: #bea0b9;
}

.role-consultant {
  background: #76b100;
}

.role-coder {
  background: #f4be15;
  color: #2a2a2a;
}

.role-engineer {
  grid-column: 2 / 4;
  min-height: 44px;
  margin: -2px auto 0;
  width: min(82%, 500px);
  background: #ff8e1f;
}

.diagram-values {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.value-card {
  background: linear-gradient(165deg, #fff 0%, #f7fbff 100%);
  border: 1px solid rgba(26, 54, 93, 0.12);
  border-radius: 16px;
  padding: var(--spacing-md);
}

.value-card h3 {
  font-size: clamp(1.35rem, 2.4vw, 1.95rem);
  color: #ea8500;
  margin-bottom: var(--spacing-xs);
  line-height: 1.2;
}

.value-card p {
  margin: 0;
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  font-weight: 600;
  line-height: 1.6;
}

.diagram-summary {
  margin: 0;
  text-align: center;
  font-size: clamp(1.15rem, 2.2vw, 2rem);
  font-weight: 900;
  color: var(--primary-navy);
  letter-spacing: 0.01em;
}

@media (max-width: 767px) {
  .work-style {
    padding: var(--spacing-2xl) 0;
  }

  .work-diagram {
    padding: 16px;
    border-radius: 16px;
  }

  .diagram-track {
    gap: 4px;
  }

  .diagram-step {
    min-height: 54px;
    gap: 4px;
    padding: 8px 8px 8px 10px;
    font-size: clamp(0.56rem, 1.9vw, 0.74rem);
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%, 8px 50%);
  }

  .diagram-step:first-child {
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 50%, calc(100% - 12px) 100%, 0 100%);
  }

  .step-id {
    font-size: 0.68em;
  }

  .diagram-roles {
    grid-template-columns: 0.9fr 1.5fr 1fr;
    gap: 6px;
    padding: 8px;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }

  .role-chip {
    min-height: 42px;
    font-size: clamp(0.72rem, 2.5vw, 0.9rem);
  }

  .role-engineer {
    min-height: 38px;
    width: min(92%, 320px);
  }

  .diagram-values {
    gap: 10px;
  }

  .value-card {
    padding: 12px;
    border-radius: 14px;
  }

  .value-card h3 {
    font-size: clamp(1rem, 3.5vw, 1.2rem);
  }

  .value-card p {
    font-size: clamp(0.78rem, 2.8vw, 0.92rem);
    line-height: 1.55;
  }

  .diagram-summary {
    font-size: clamp(0.96rem, 3.6vw, 1.2rem);
    line-height: 1.4;
  }
}

/* =================================
   Services
   ================================= */
.services {
  padding: var(--spacing-3xl) 0;
  background: var(--white);
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: 1000px;
  margin: 0 auto;
}

@media (max-width: 1023px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .service-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: var(--white);
  border: 1px solid var(--secondary-gray-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-teal);
}

.card-image {
  height: 140px;
  overflow: hidden;
  background: var(--secondary-mint);
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.card-image-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e8f5f2;
}

.card-content {
  padding: var(--spacing-md);
}

.card-icon {
  margin-bottom: var(--spacing-md);
}

.service-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.service-card .impact {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-teal);
  margin-bottom: var(--spacing-sm);
}

.service-card .description {
  font-size: var(--font-size-base);
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
}

.card-links {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.card-link {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-teal);
  transition: color var(--transition-fast);
}

.card-link:hover {
  color: var(--primary-teal-dark);
}

.card-link.shop-link {
  color: var(--accent-orange);
}

.card-link.shop-link:hover {
  color: #d4850e;
}

/* =================================
   Shop Banner
   ================================= */
.shop-banner {
  padding: var(--spacing-lg) 0;
  background: linear-gradient(135deg, #e8f5f2 0%, #d4f0e8 100%);
}

.shop-banner-link {
  display: block;
  background: var(--white);
  border: 2px solid var(--primary-teal);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md) var(--spacing-lg);
  transition: all var(--transition-normal);
}

.shop-banner-link:hover {
  background: var(--primary-teal);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.shop-banner-link:hover .shop-banner-title,
.shop-banner-link:hover .shop-banner-desc,
.shop-banner-link:hover .shop-banner-arrow {
  color: var(--white);
}

.shop-banner-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.shop-banner-icon {
  font-size: 2rem;
}

.shop-banner-text {
  flex: 1;
}

.shop-banner-title {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--primary-navy);
}

.shop-banner-desc {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.shop-banner-arrow {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-teal);
}

/* =================================
   Case Studies
   ================================= */
.case-studies {
  padding: var(--spacing-3xl) 0;
  background: var(--secondary-mint);
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

@media (max-width: 1023px) {
  .case-grid {
    grid-template-columns: 1fr;
  }
}

.case-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.case-item-featured {
  border: 2px solid rgba(45, 153, 112, 0.2);
  box-shadow: 0 20px 40px rgba(45, 153, 112, 0.1);
}

.case-image {
  width: 100%;
  overflow: hidden;
}

.case-content {
  padding: var(--spacing-lg);
}

.case-image img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

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

.case-header {
  margin-bottom: var(--spacing-md);
}

.case-tag {
  display: inline-block;
  background: rgba(45, 153, 112, 0.12);
  color: var(--primary-teal-dark);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-xs);
}

.case-header h3 {
  font-size: var(--font-size-xl);
}

.case-result {
  background: var(--secondary-mint);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.before-after {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
}

.before-after .before,
.before-after .after {
  flex: 1;
  min-width: 100px;
}

.before-after .label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--text-light);
  margin-bottom: 2px;
}

.before-after .value {
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.before-after .arrow {
  color: var(--primary-teal);
  font-weight: 700;
}

.impact-highlight {
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.impact-highlight .number {
  font-size: var(--font-size-3xl);
  font-weight: 900;
  color: var(--primary-teal);
}

.impact-highlight .text {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

.case-item .description {
  font-size: var(--font-size-base);
  color: var(--text-light);
}

/* =================================
   Philosophy
   ================================= */
.philosophy {
  position: relative;
  padding: var(--spacing-3xl) 0;
  overflow: hidden;
}

.philosophy-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-navy) 0%, #1a4a3a 100%);
}

.philosophy .container {
  position: relative;
  z-index: 1;
}

.philosophy-main-title {
  font-size: var(--font-size-5xl);
  color: var(--white);
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.philosophy-subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.8);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

@media (max-width: 767px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
  }
}

.philosophy-card {
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
  transition: transform var(--transition-normal);
}

.philosophy-card:hover {
  transform: translateY(-4px);
}

.philosophy-icon {
  margin-bottom: var(--spacing-md);
}

.philosophy-card h3 {
  font-size: var(--font-size-xl);
  color: var(--primary-navy);
  margin-bottom: var(--spacing-md);
}

.philosophy-card p {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.philosophy-card .emphasis {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--primary-navy);
  margin-top: var(--spacing-sm);
  margin-bottom: 0;
}

/* =================================
   Team
   ================================= */
.team {
  padding: var(--spacing-3xl) 0;
  background: var(--white);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
}

.team-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 280px));
  justify-content: center;
}

@media (max-width: 1023px) {
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .team-grid {
    grid-template-columns: 1fr;
  }
}

.team-member {
  text-align: center;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.team-member:hover {
  background: var(--secondary-mint);
}

.avatar {
  width: 100px;
  height: 100px;
  margin: 0 auto var(--spacing-md);
}

.avatar svg,
.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.team-member h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.team-member .role {
  font-size: var(--font-size-sm);
  color: var(--primary-teal);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.team-member .expertise {
  font-size: var(--font-size-sm);
  color: var(--text-light);
}

/* =================================
   Contact
   ================================= */
.contact {
  padding: var(--spacing-3xl) 0;
  background: var(--secondary-mint);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
}

@media (max-width: 1023px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-navy);
  margin-bottom: var(--spacing-xs);
}

.form-group .required {
  color: var(--accent-red);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-teal);
  box-shadow: 0 0 0 3px rgba(45, 153, 112, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-lighter);
}

.contact-form .cta-primary {
  width: 100%;
  margin-top: var(--spacing-sm);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.info-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
}

.info-item h4 {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  margin-bottom: var(--spacing-xs);
}

.info-item a {
  font-size: var(--font-size-lg);
  color: var(--primary-teal);
  font-weight: 600;
}

.info-item a:hover {
  text-decoration: underline;
}

.info-item p {
  font-size: var(--font-size-base);
  color: var(--text-dark);
}

/* =================================
   Footer
   ================================= */
.site-footer {
  background: var(--primary-navy);
  color: var(--white);
  padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

@media (max-width: 767px) {
  .footer-content {
    flex-direction: column;
  }
}

.footer-logo a {
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: var(--white);
  letter-spacing: 0.05em;
}

.footer-logo .tagline {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  margin-top: var(--spacing-xs);
}

.footer-nav {
  display: flex;
  gap: var(--spacing-xl);
}

@media (max-width: 767px) {
  .footer-nav {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
}

.nav-column h4 {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.nav-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.nav-column a {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  transition: color var(--transition-fast);
}

.nav-column a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-lg);
}

.copyright {
  font-size: var(--font-size-sm);
  color: var(--text-lighter);
  text-align: center;
}

/* =================================
   Animations
   ================================= */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .fade-in {
    transition: none;
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* Focus states for accessibility */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--primary-teal);
  outline-offset: 2px;
}

/* Skip to content link for screen readers */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--primary-teal);
  color: var(--white);
  padding: var(--spacing-sm) var(--spacing-md);
  z-index: 9999;
}

.skip-link:focus {
  top: 0;
}

/* =================================
   代表者紹介セクション
   ================================= */
.about-ceo {
  padding: var(--spacing-3xl) 0;
  background:
    radial-gradient(circle at top left, rgba(45, 153, 112, 0.10), transparent 32%),
    linear-gradient(180deg, #f0fbf6 0%, #e8f5f2 100%);
  border-top: 1px solid rgba(45, 153, 112, 0.16);
}

.about-ceo .section-title {
  color: var(--primary-navy);
}

.about-ceo .section-subtitle {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.ceo-profile {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.ceo-intro-card {
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: var(--spacing-xl);
  align-items: stretch;
  background: rgba(255, 255, 255, 0.88);
  padding: var(--spacing-xl);
  border: 1px solid rgba(26, 54, 93, 0.08);
  border-radius: 28px;
  box-shadow: 0 24px 60px rgba(26, 54, 93, 0.08);
}

.ceo-visual {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.ceo-header {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  background: linear-gradient(180deg, #d4f0e8 0%, #e8f5f2 100%);
  min-height: 100%;
  padding: var(--spacing-lg);
}

.ceo-header::after {
  content: "";
  position: absolute;
  inset: auto -40px -80px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(45, 153, 112, 0.12);
}

.ceo-eyebrow {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary-teal-dark);
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(45, 153, 112, 0.2);
  margin-bottom: var(--spacing-md);
}

.ceo-avatar {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center top;
  border-radius: 20px;
  box-shadow: 0 18px 40px rgba(26, 54, 93, 0.18);
  position: relative;
  z-index: 1;
}

.ceo-focus-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ceo-focus-points span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: var(--radius-full);
  background: rgba(45, 153, 112, 0.08);
  color: var(--primary-navy);
  font-size: var(--font-size-sm);
  font-weight: 700;
}

.ceo-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ceo-name-block {
  margin-bottom: var(--spacing-md);
}

.ceo-role {
  margin: 0 0 10px;
  font-size: 0.82rem;
  color: var(--primary-teal-dark);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ceo-name-block h3 {
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 900;
  line-height: 1.12;
  color: var(--primary-navy);
  margin: 0;
}

.ceo-name-block .name-en {
  display: block;
  margin-top: 8px;
  font-size: var(--font-size-lg);
  font-weight: 500;
  color: var(--text-muted);
}

.ceo-lead {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  line-height: 1.8;
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.ceo-summary {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-lg);
}

.ceo-value-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-sm);
}

.ceo-value-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--spacing-md);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(45, 153, 112, 0.08) 0%, rgba(255, 255, 255, 0.9) 100%);
  border: 1px solid rgba(45, 153, 112, 0.14);
}

.ceo-value-item strong {
  font-size: var(--font-size-base);
  color: var(--primary-navy);
}

.ceo-value-item span {
  font-size: var(--font-size-sm);
  line-height: 1.7;
  color: var(--text-secondary);
}

.ceo-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: var(--spacing-lg);
  align-items: start;
}

.ceo-scope {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
}

.scope-card {
  padding: var(--spacing-xl);
  border-radius: 24px;
  border: 1px solid rgba(26, 54, 93, 0.08);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 40px rgba(26, 54, 93, 0.06);
}

.scope-card h4 {
  font-size: var(--font-size-xl);
  color: var(--primary-navy);
  margin-bottom: var(--spacing-md);
}

.scope-card ul {
  margin: 0;
  padding-left: 1.2rem;
}

.scope-card li {
  margin-bottom: 12px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.scope-can {
  border-top: 4px solid var(--primary-teal);
}

.scope-cannot {
  border-top: 4px solid var(--accent-orange);
}

.ceo-actions {
  display: flex;
  justify-content: center;
}

.portfolio-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: var(--radius-full);
  background: var(--primary-navy);
  color: var(--white);
  font-weight: 700;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal);
}

.portfolio-button:hover {
  background: var(--primary-teal-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.ceo-strengths h4,
.ceo-skills h4 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-xs);
  display: inline-flex;
  border-bottom: 3px solid rgba(45, 153, 112, 0.3);
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

@media (max-width: 768px) {
  .strengths-grid {
    grid-template-columns: 1fr;
  }
}

.strength-item {
  display: flex;
  gap: var(--spacing-md);
  background: rgba(255, 255, 255, 0.92);
  padding: var(--spacing-md);
  border-radius: 20px;
  box-shadow: 0 14px 30px rgba(26, 54, 93, 0.06);
  border: 1px solid rgba(26, 54, 93, 0.06);
  min-height: 100%;
}

.strength-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  font-size: 1.2rem;
  background: rgba(45, 153, 112, 0.12);
  flex-shrink: 0;
}

.strength-item strong {
  display: block;
  font-size: var(--font-size-lg);
  color: var(--primary-navy);
  margin-bottom: 8px;
  line-height: 1.4;
}

.strength-item p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

.ceo-skills {
  background: linear-gradient(180deg, rgba(26, 32, 64, 0.98) 0%, rgba(26, 64, 50, 0.98) 100%);
  border-radius: 28px;
  padding: var(--spacing-xl);
  color: var(--white);
  box-shadow: 0 24px 50px rgba(26, 54, 93, 0.18);
}

.ceo-skills h4 {
  color: var(--white);
  border-bottom-color: rgba(255, 255, 255, 0.24);
}

.skill-layers {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.skill-layer {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  background: rgba(255, 255, 255, 0.08);
  padding: var(--spacing-md);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.layer-label {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--primary-navy);
  background: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  min-width: 80px;
  text-align: center;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.skill-tags span {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.92);
  background: rgba(255, 255, 255, 0.08);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

@media (max-width: 980px) {
  .ceo-intro-card,
  .ceo-detail-grid,
  .ceo-value-list,
  .ceo-scope {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .about-ceo {
    padding: var(--spacing-2xl) 0;
  }

  .ceo-intro-card,
  .ceo-skills {
    padding: var(--spacing-lg);
    border-radius: 22px;
  }

  .ceo-header {
    padding: var(--spacing-md);
  }

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

  .skill-layer {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .ceo-summary,
  .strength-item p {
    font-size: var(--font-size-sm);
  }
}

/* =================================
   システム設計思想セクション
   ================================= */
.design-philosophy {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--primary-navy) 0%, #1a4a3a 100%);
  color: var(--white);
}

.design-philosophy .section-title {
  color: var(--white);
}

.design-philosophy .section-subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.philosophy-principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.principle-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
}

.principle-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.principle-number {
  display: inline-block;
  font-size: var(--font-size-xl);
  font-weight: 900;
  color: var(--primary-teal-light);
  margin-bottom: var(--spacing-sm);
}

.principle-card h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--spacing-sm);
}

.principle-card p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
}