:root {
  --color-primary: #2d5a27;
  --color-primary-light: #3d7a35;
  --color-accent: #4a9d3f;
  --color-text: #333;
  --color-text-light: #666;
  --color-bg: #f8faf7;
  --color-white: #fff;
  --shadow: 0 4px 20px rgba(45, 90, 39, 0.08);
  --radius: 8px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  color: var(--color-text);
  line-height: 1.8;
  background: var(--color-bg);
}

/* Header */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo a {
  text-decoration: none;
}

.logo img {
  height: 50px;
  width: auto;
}

/* PC: 2段表示（お問い合わせ / 022-293-3581） */
.header-contact {
  text-align: right;
}

.header-contact-label {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 0.2rem;
  border: 1px solid var(--color-text-light);
  text-align: center;
  padding: 0.1em 0.5em;
}

.header-tel {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  text-decoration: none;
  display: block;
}

.header-tel:hover {
  text-decoration: underline;
}

/* Hero (index) */
.hero {
  position: relative;
  height: 60vh;
  min-height: 400px;
  overflow: hidden;
}

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

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(45, 90, 39, 0.7) 0%, rgba(45, 90, 39, 0.3) 60%, transparent 100%);
  display: flex;
  align-items: center;
  padding: 0 4rem;
}

.hero-content h1 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  color: var(--color-white);
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  max-width: 500px;
}

.hero-content .tagline {
  font-size: 1rem;
  color: rgba(255,255,255,0.95);
  margin-top: 0.5rem;
}

/* Hero sub (sekou) */
.hero-sub {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  padding: 3rem 2rem;
  text-align: center;
}

.hero-sub h1 {
  font-size: 1.75rem;
  color: var(--color-white);
  font-weight: 700;
}

.breadcrumb {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.breadcrumb a {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* Sections */
section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 2rem;
  padding-bottom: 0.75rem;
  border-bottom: 3px solid var(--color-accent);
  display: inline-block;
}

/* About */
.about-content {
  background: var(--color-white);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-content p {
  margin-bottom: 1rem;
  color: var(--color-text);
}

.about-content p:last-child {
  margin-bottom: 0;
}

.slogan {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

/* Construction */
.construction-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-width: 600px;
}

.construction-card-body {
  padding: 2rem;
}

.construction-card h3 {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.construction-card p {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background 0.2s;
}

.btn:hover {
  background: var(--color-primary-light);
}

/* Associations */
.association-list {
  list-style: none;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.association-list li {
  border-bottom: 1px solid #eee;
}

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

.association-list a {
  display: block;
  padding: 1.25rem 1.5rem;
  color: var(--color-text);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}

.association-list a:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

.association-list a::after {
  content: ' ↗';
  font-size: 0.85em;
  color: var(--color-text-light);
}

.btn-carousel {
  margin-bottom: 1rem;
}

.btn-carousel:hover {
  color: var(--color-white);
  text-decoration: none;
}

/* Company Profile */
.profile-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.profile-table th,
.profile-table td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.profile-table th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  width: 180px;
}

.profile-table tr:last-child td {
  border-bottom: none;
}

/* History */
.history-list {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.history-item {
  display: flex;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid #eee;
  gap: 2rem;
}

.history-item:last-child {
  border-bottom: none;
}

.history-date {
  font-weight: 600;
  color: var(--color-primary);
  min-width: 140px;
}

.history-desc {
  color: var(--color-text);
}

/* Contact */
.contact-section {
  max-width: 100%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: var(--color-white);
  margin: 0;
  padding: 4rem 2rem;
}

.contact-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.contact-image {
  max-width: 400px;
  border-radius: var(--radius);
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.contact-image img {
  width: 100%;
  height: auto;
  display: block;
}

.contact-info {
  text-align: center;
}

.contact-info .section-title {
  color: var(--color-white);
  border-bottom-color: rgba(255,255,255,0.5);
}

.contact-tel {
  font-size: 2rem;
  font-weight: 700;
  margin: 1rem 0;
}

.contact-tel a {
  color: inherit;
  text-decoration: none;
}

.contact-cta {
  margin-top: 1.5rem;
}

.btn-light {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn-light:hover {
  background: #f0f0f0;
}

/* Sekou - Nav sidebar */
.nav-sidebar {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 3rem;
}

.nav-sidebar h3 {
  font-size: 1rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

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

.nav-sidebar li {
  margin-bottom: 0.5rem;
}

.nav-sidebar a {
  color: var(--color-text);
  text-decoration: none;
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid #eee;
}

.nav-sidebar a:hover {
  color: var(--color-primary);
}

/* Sekou - Item box */
.item-box {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 2.5rem;
  margin-bottom: 3rem;
}

.item-box h3 {
  font-size: 1.35rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

.item-box > p {
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

.item-gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.item-gallery figure {
  flex: 1;
  min-width: 150px;
  max-width: 220px;
}

.item-gallery a {
  display: block;
  text-decoration: none;
  color: inherit;
}

.item-gallery-thumbs figure a {
  display: block;
}

.item-gallery img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid #eee;
  transition: box-shadow 0.2s;
}

.item-gallery a:hover img {
  box-shadow: var(--shadow);
}

.item-gallery figcaption {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  text-align: center;
}

.btn-back {
  display: inline-block;
  margin-top: 1.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  color: var(--color-primary);
  text-decoration: none;
}

.btn-back:hover {
  text-decoration: underline;
}

/* スマホ: フッター固定バー */
.footer-fixed-sp {
  display: none;
}

@media (max-width: 768px) {
  .footer-fixed-sp {
    display: block;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-primary);
    color: var(--color-white);
    text-align: center;
    padding: 1rem;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.15);
  }

  .footer-fixed-sp a {
    color: inherit;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
  }

  body {
    padding-bottom: 70px;
  }
}

/* Footer */
.footer {
  width: 100%;
  background: #1a3d17;
  color: rgba(255,255,255,0.9);
  text-align: center;
  padding: 2rem;
  font-size: 0.9rem;
}

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

@media (max-width: 768px) {
  .hero-overlay {
    padding: 0 2rem;
  }

  .header-inner {
    flex-direction: row;
    gap: 0;
    align-items: center;
  }

  .header-contact {
    display: none;
  }

  .contact-inner {
    flex-direction: column;
  }

  .history-item {
    flex-direction: column;
    gap: 0.5rem;
  }

  .profile-table th {
    width: 120px;
    font-size: 0.9rem;
  }

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

  .item-gallery figure {
    max-width: 100%;
  }
}