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

:root {
  /* 天気の良い空・太陽のイメージカラー */
  --color-primary: #6BB6FF;
  --color-primary-dark: #4A9EFF;
  --color-primary-light: #A8D8EA;
  --color-sky-light: #E0F7FA;
  --color-sun: #FFE5B4;
  --color-sun-light: #FFF8E7;
  /* 差し色：深緑系 */
  --color-accent-green: #2D5A27;
  --color-accent-green-dark: #1B4332;
  --color-accent-green-light: #4A7C59;
  /* ヒーローオーバーレイ */
  --color-hero-overlay: rgba(107, 182, 255, 0.3);
  /* ニュートラルカラー */
  --color-neutral-dark: #2c2c2c;
  --color-neutral: #666666;
  --color-neutral-light: #f5f5f5;
  --color-white: #ffffff;
  --color-text: #333333;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 4rem;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Meiryo", "Hiragino Kaku Gothic ProN", "Hiragino Sans", sans-serif;
}

@media (max-width: 768px) {
  :root {
    --spacing-xs: 0.4rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;
  }
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
}

address {
  font-style: normal;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* Header */
header {
  background: var(--color-white);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem var(--spacing-md);
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--color-primary);
  z-index: 101;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-img {
  height: 60px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-primary);
  white-space: nowrap;
}

/* ハンバーガーボタン */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 101;
  position: relative;
  gap: 6px;
}

.hamburger-line {
  width: 24px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transform-origin: center;
  display: block;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.hamburger-btn:hover .hamburger-line {
  background: var(--color-accent-green);
}

.hamburger-btn.hamburger-active .hamburger-line {
  background: var(--color-primary);
}

.hamburger-btn.hamburger-active:hover .hamburger-line {
  background: var(--color-accent-green);
}

.hamburger-btn.hamburger-active .hamburger-line:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}

.hamburger-btn.hamburger-active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger-btn.hamburger-active .hamburger-line:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ナビゲーションメニュー */
.nav-menu {
  display: flex;
}

.nav-menu ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  margin: 0;
  padding: 0;
}

.nav-menu a {
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: color 0.3s;
  white-space: nowrap;
  color: var(--color-text);
  text-decoration: none;
}

.nav-menu a:hover {
  color: var(--color-accent-green);
}

/* モバイル表示 */
@media (max-width: 768px) {
  .header-inner {
    padding: 0.4rem var(--spacing-sm);
  }

  .logo {
    font-size: 1.2rem;
    gap: 0.5rem;
  }

  .logo-img {
    height: 45px;
  }

  .logo-text {
    font-size: 1.15rem;
  }

  .hamburger-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-sky-light);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 100;
    overflow-y: auto;
    padding-top: 60px;
  }

  .nav-menu.nav-open {
    right: 0;
  }

  .nav-menu ul {
    flex-direction: column;
    gap: 0;
    width: 100%;
    padding: var(--spacing-sm);
  }

  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid var(--color-neutral-light);
  }

  .nav-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1rem;
    color: var(--color-text);
    transition: background 0.3s, color 0.3s;
  }

  .nav-menu a:hover {
    background: var(--color-white);
    color: var(--color-accent-green);
  }

  /* メニューオープン時の背景オーバーレイ */
  .nav-menu.nav-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(107, 182, 255, 0.2);
    z-index: -1;
    animation: fadeIn 0.3s ease;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@media (max-width: 480px) {
  .header-inner {
    padding: 0.3rem var(--spacing-sm);
  }

  .logo {
    gap: 0.4rem;
  }

  .logo-img {
    height: 40px;
  }

  .logo-text {
    font-size: 1rem;
  }

  .nav-menu {
    width: 100%;
    right: -100%;
  }

  .nav-menu.nav-open {
    right: 0;
  }
}

/* Hero */
#hero {
  background: var(--color-hero-overlay);
  color: var(--color-white);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

#hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('img/hero-background.png') center/cover;
  z-index: 0;
}

#hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(107, 182, 255, 0.4) 0%, rgba(255, 229, 180, 0.3) 100%);
  z-index: 1;
}

#hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}

#hero h1 {
  font-size: clamp(1.5rem, 5vw, 3.5rem);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  line-height: 1.4;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

#hero p {
  font-size: clamp(0.9rem, 2vw, 1.25rem);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
  line-height: 1.8;
}

.cta-button {
  display: inline-block;
  background: var(--color-accent-green);
  color: var(--color-white);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  font-weight: bold;
  font-size: 1.1rem;
  transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
  min-height: 44px;
  min-width: 200px;
  text-shadow: none;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
  background: var(--color-accent-green-dark);
}

@media (max-width: 768px) {
  #hero {
    padding: var(--spacing-xl) var(--spacing-sm);
    min-height: 80vh;
  }

  #hero h1 {
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
  }

  #hero p {
    margin-bottom: var(--spacing-lg);
    padding: 0 var(--spacing-xs);
  }

  .cta-button {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    min-width: 180px;
  }
}

@media (max-width: 480px) {
  #hero {
    padding: var(--spacing-lg) var(--spacing-sm);
    min-height: 75vh;
  }

  #hero h1 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
  }

  #hero p {
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
  }

  .cta-button {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    min-width: 160px;
    width: 100%;
    max-width: 280px;
  }
}

/* Services */
#services {
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--color-sky-light);
}

#services h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-dark);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.service-card {
  background: var(--color-white);
  border-radius: 8px;
  padding: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.service-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: var(--spacing-sm);
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-accent-green);
  line-height: 1.4;
}

.service-card p {
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
  font-size: 0.95rem;
  flex-grow: 1;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  margin-top: auto;
  padding-top: var(--spacing-sm);
}

.tag {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
}

@media (max-width: 768px) {
  #services {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  #services h2 {
    margin-bottom: var(--spacing-md);
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
  }

  .service-card {
    padding: var(--spacing-sm);
  }

  .service-card img {
    height: 180px;
  }

  .service-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
  }

  .service-card p {
    font-size: 0.9rem;
    line-height: 1.7;
  }
}

@media (max-width: 480px) {
  #services {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .service-card img {
    height: 160px;
  }

  .service-card h3 {
    font-size: 1.2rem;
  }

  .service-card p {
    font-size: 0.85rem;
  }

  .tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
  }
}

/* About */
#about {
  padding: var(--spacing-xl) var(--spacing-md);
}

#about h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-dark);
}

.about-table {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

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

.about-table th {
  background: var(--color-accent-green);
  color: var(--color-white);
  padding: 1rem 1.5rem;
  text-align: left;
  width: 30%;
  font-weight: 600;
  vertical-align: top;
}

.about-table td {
  padding: 1rem 1.5rem;
  background: var(--color-white);
  color: var(--color-text);
  vertical-align: top;
}

.about-table td a {
  color: var(--color-accent-green);
  text-decoration: underline;
  transition: color 0.3s;
}

.about-table td a:hover {
  color: var(--color-accent-green-dark);
}

/* モバイルビュー */
@media (max-width: 768px) {
  #about {
    padding: var(--spacing-lg) 0;
  }

  #about .container {
    padding: 0 var(--spacing-sm);
  }

  #about h2 {
    margin-bottom: var(--spacing-md);
  }

  .about-table {
    display: block;
    border-radius: 8px;
  }

  .about-table thead {
    display: none;
  }

  .about-table tbody {
    display: block;
  }

  .about-table tr {
    display: block;
    margin-bottom: var(--spacing-sm);
    border: none;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }

  .about-table tr:last-child {
    margin-bottom: 0;
  }

  .about-table th,
  .about-table td {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    box-sizing: border-box;
  }

  .about-table th {
    background: var(--color-accent-green);
    color: var(--color-white);
    font-weight: 600;
    text-align: left;
    border-radius: 8px 8px 0 0;
  }

  .about-table td {
    background: var(--color-white);
    border-radius: 0 0 8px 8px;
  }
}

@media (max-width: 480px) {
  #about {
    padding: var(--spacing-md) 0;
  }

  #about .container {
    padding: 0 0.75rem;
  }

  .about-table th,
  .about-table td {
    padding: 0.6rem 0.75rem;
  }
}

/* Access */
#access {
  padding: var(--spacing-xl) var(--spacing-md);
  background: var(--color-sun-light);
}

#access h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-dark);
}

.access-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.access-content p {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-md);
  line-height: 1.8;
}

.map-container {
  width: 100%;
  max-width: 800px;
  margin: var(--spacing-md) auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.map-iframe {
  width: 100%;
  height: 450px;
  border: 0;
  display: block;
}

.map-link {
  display: inline-block;
  margin-top: var(--spacing-md);
  color: var(--color-accent-green);
  font-weight: 600;
  text-decoration: underline;
  min-height: 44px;
  line-height: 44px;
  padding: 0.5rem 1rem;
}

.map-link:hover {
  color: var(--color-accent-green-dark);
}

@media (max-width: 768px) {
  #access {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  #access h2 {
    margin-bottom: var(--spacing-md);
  }

  .access-content p {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
  }

  .map-container {
    margin: var(--spacing-sm) auto;
  }

  .map-iframe {
    height: 350px;
  }

  .map-link {
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
  }
}

@media (max-width: 480px) {
  #access {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .access-content p {
    font-size: 0.95rem;
  }

  .map-container {
    margin: var(--spacing-xs) auto;
  }

  .map-iframe {
    height: 300px;
  }

  .map-link {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }
}

/* Contact */
#contact {
  padding: var(--spacing-xl) var(--spacing-md);
}

#contact h2 {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-dark);
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

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

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  font-size: 0.95rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-family: var(--font-family);
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-green);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  background: var(--color-accent-green);
  color: var(--color-white);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s, transform 0.3s;
  min-height: 44px;
  width: 100%;
  max-width: 300px;
  display: block;
  margin: var(--spacing-md) auto 0;
}

.form-submit:hover {
  background: var(--color-accent-green-dark);
  transform: translateY(-2px);
}

@media (max-width: 768px) {
  #contact {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  #contact h2 {
    margin-bottom: var(--spacing-md);
  }

  .contact-form {
    max-width: 100%;
  }

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

  .form-group label {
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.65rem;
    font-size: 0.95rem;
  }

  .form-group textarea {
    min-height: 120px;
  }

  .form-submit {
    padding: 0.875rem 2rem;
    font-size: 1rem;
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  #contact {
    padding: var(--spacing-md) var(--spacing-sm);
  }

  .form-group label {
    font-size: 0.85rem;
  }

  .form-group input,
  .form-group textarea {
    padding: 0.6rem;
    font-size: 0.9rem;
  }

  .form-group textarea {
    min-height: 100px;
  }

  .form-submit {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }
}

/* Footer */
footer {
  background: var(--color-neutral-dark);
  color: var(--color-white);
  padding: var(--spacing-md);
  text-align: center;
}

footer p {
  margin-bottom: var(--spacing-xs);
  font-size: 0.95rem;
}

footer a {
  color: var(--color-primary-light);
  text-decoration: underline;
  min-height: 44px;
  display: inline-block;
  line-height: 44px;
  transition: color 0.3s;
}

footer a:hover {
  color: var(--color-sun);
}

@media (max-width: 768px) {
  footer {
    padding: var(--spacing-sm);
  }

  footer p {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
  }

  footer a {
    font-size: 0.9rem;
  }
}

@media (max-width: 480px) {
  footer {
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  footer p {
    font-size: 0.85rem;
  }

  footer a {
    font-size: 0.85rem;
  }
}

/* Utility */
.section-title {
  text-align: center;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-lg);
  color: var(--color-neutral-dark);
}