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

:root {
  --color-primary: #2d6a4f;
  --color-primary-dark: #1b4332;
  --color-primary-light: #52b788;
  --color-accent: #40916c;
  --color-bg: #ffffff;
  --color-bg-alt: #f8faf9;
  --color-text: #1a1a2e;
  --color-text-light: #555;
  --color-text-muted: #888;
  --color-border: #e0e0e0;
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-en: 'Inter', sans-serif;
  --max-width: 1100px;
  --header-height: 72px;
  --radius: 8px;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-ja);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--color-primary-light);
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  font-size: 28px;
}

.logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
}

.logo-main {
  display: block;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 2px;
  color: var(--color-primary-dark);
}

.logo-sub {
  display: block;
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

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

.nav-link:hover::after {
  width: 100%;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 30%, #d1fae5 70%, #a7f3d0 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(45, 106, 79, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(82, 183, 136, 0.1) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 120px 24px 80px;
}

.hero-tagline {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 3px;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
  color: var(--color-primary-dark);
}

.hero-description {
  font-size: 17px;
  color: var(--color-text-light);
  line-height: 2;
  margin-bottom: 40px;
  max-width: 560px;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-ja);
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-align: center;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(45, 106, 79, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(45, 106, 79, 0.4);
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(24px, 3.5vw, 36px);
  font-weight: 700;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== About ===== */
.about-content {
  display: grid;
  gap: 48px;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 15px;
  color: var(--color-text-light);
}

.about-text strong {
  color: var(--color-primary);
}

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

.value-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition);
}

.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.value-icon {
  font-size: 36px;
  margin-bottom: 16px;
}

.value-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  margin: 0 auto;
}

.value-card h3 {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-primary-dark);
}

.value-card p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Services ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 40px 32px;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-number {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary-light);
  opacity: 0.4;
  margin-bottom: 12px;
}

.service-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-primary-dark);
}

.service-desc {
  font-size: 14px;
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.8;
}

.service-list {
  list-style: none;
  padding: 0;
}

.service-list li {
  font-size: 13px;
  color: var(--color-text-light);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.service-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 13px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-light);
}

/* Service card as link */
.service-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.service-card-link:hover {
  color: inherit;
}

.service-more {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  transition: color var(--transition);
}

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

/* Nav active state */
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active::after {
  width: 100%;
}

/* ===== Company ===== */
.company-table-wrapper {
  max-width: 700px;
  margin: 0 auto;
}

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

.company-table th,
.company-table td {
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  font-size: 15px;
}

.company-table th {
  width: 160px;
  font-weight: 600;
  color: var(--color-primary-dark);
  white-space: nowrap;
}

.company-table td {
  color: var(--color-text-light);
}

/* ===== Contact ===== */
.contact-wrapper {
  max-width: 640px;
  margin: 0 auto;
}

.contact-form {
  background: var(--color-bg);
  border-radius: var(--radius);
  padding: 48px 40px;
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 24px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.required {
  color: #e63946;
  font-size: 12px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 15px;
  font-family: var(--font-ja);
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #bbb;
}

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

.form-privacy {
  margin-top: 8px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-text-light);
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
}

.btn-submit {
  width: 100%;
  padding: 16px;
  font-size: 16px;
  margin-top: 8px;
}

/* Form messages */
.form-success {
  text-align: center;
  padding: 40px 20px;
}

.form-success h3 {
  font-size: 22px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}

.form-success p {
  color: var(--color-text-light);
  font-size: 15px;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 32px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

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

.footer-logo .logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.footer .logo-main {
  color: #fff;
}

.footer .logo-sub {
  color: rgba(255, 255, 255, 0.5);
}

.footer-nav {
  display: flex;
  gap: 32px;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  transition: color var(--transition);
}

.footer-nav a:hover {
  color: #fff;
}

.footer-copy {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.35);
  margin-top: 8px;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

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

  .menu-toggle {
    display: flex;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-content {
    padding: 100px 24px 60px;
  }

  .section {
    padding: 64px 0;
  }

  .about-values {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .contact-form {
    padding: 32px 24px;
  }

  .company-table th {
    width: 120px;
    padding: 16px 12px;
  }

  .company-table td {
    padding: 16px 12px;
  }

  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-description {
    font-size: 15px;
  }

  .service-card {
    padding: 28px 24px;
  }
}