@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #5BB8D4;
  --primary-dark: #3A9BBF;
  --primary-light: #E8F6FA;
  --primary-pale: #F2FAFE;
  --accent: #1A1A2E;
  --accent-light: #2D2D44;
  --white: #FFFFFF;
  --off-white: #FAFCFD;
  --gray-50: #F8F9FA;
  --gray-100: #F1F3F5;
  --gray-200: #E9ECEF;
  --gray-300: #DEE2E6;
  --gray-400: #CED4DA;
  --gray-500: #ADB5BD;
  --gray-600: #868E96;
  --gray-700: #495057;
  --gray-800: #343A40;
  --gray-900: #212529;
  --font-ja: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-en: 'Inter', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --radius: 8px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-ja);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 100px 0; }
.section-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.section-subtitle {
  font-size: 0.95rem;
  color: var(--gray-600);
  max-width: 600px;
  line-height: 1.9;
}
.section-header { margin-bottom: 60px; }
.section-header.center { text-align: center; }
.section-header.center .section-subtitle { margin: 0 auto; }
.bg-pale { background: var(--primary-pale); }
.bg-gray { background: var(--gray-50); }

/* ========== HEADER ========== */
.header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.04);
  transition: var(--transition);
}
.header.scrolled { box-shadow: var(--shadow-sm); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 72px;
}
.header-logo { display: flex; align-items: center; gap: 12px; }
.header-logo img { height: 44px; width: auto; }
.header-logo-text {
  font-family: var(--font-en);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.05em;
}
.header-logo-text span {
  display: block;
  font-size: 0.6rem;
  font-weight: 400;
  color: var(--gray-500);
  letter-spacing: 0.15em;
}
.header-nav { display: flex; align-items: center; gap: 32px; }
.header-nav a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--gray-700);
  letter-spacing: 0.05em;
  position: relative;
  padding: 4px 0;
}
.header-nav a::after {
  content: '';
  position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}
.header-nav a:hover::after,
.header-nav a.active::after { width: 100%; }
.header-nav a:hover { color: var(--primary); }
.header-cta {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--primary);
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: 100px;
  letter-spacing: 0.05em;
  transition: var(--transition);
}
.header-cta:hover { background: var(--primary-dark); transform: translateY(-1px); }

/* Hamburger */
.hamburger {
  display: none; cursor: pointer; flex-direction: column;
  gap: 5px; width: 28px; z-index: 1001;
}
.hamburger span {
  display: block; height: 2px; background: var(--accent);
  border-radius: 2px; transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile nav */
.mobile-nav {
  display: none;
  position: fixed; top: 0; right: -100%; width: 80%; max-width: 360px;
  height: 100vh; background: var(--white);
  box-shadow: var(--shadow-lg);
  padding: 100px 40px 40px;
  transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}
.mobile-nav.open { right: 0; }
.mobile-nav a {
  display: block; padding: 16px 0; font-size: 1rem; font-weight: 500;
  color: var(--gray-700); border-bottom: 1px solid var(--gray-100);
}
.mobile-overlay {
  display: none;
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(0,0,0,0.3); z-index: 998; opacity: 0;
  transition: opacity 0.3s ease;
}
.mobile-overlay.open { opacity: 1; }

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(135deg, var(--off-white) 0%, var(--primary-pale) 100%);
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%; right: -10%;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91,184,212,0.08) 0%, transparent 70%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}
.hero-content { position: relative; z-index: 1; }
.hero-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--accent);
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}
.hero-title .highlight {
  color: var(--primary);
  position: relative;
}
.hero-title-main {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}
.hero-title-sub {
  display: block;
}
.hero-text {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 2;
  margin-bottom: 40px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.9rem; font-weight: 600;
  padding: 14px 32px;
  border-radius: 100px;
  border: none; cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.05em;
}
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: var(--gray-700);
  border: 1.5px solid var(--gray-300);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.hero-visual {
  position: relative;
}
.hero-img {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-img img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}
.hero-float-card {
  position: absolute;
  bottom: -20px; left: -30px;
  background: var(--white);
  border-radius: 16px;
  padding: 20px 24px;
  box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 16px;
}
.hero-float-number {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.hero-float-text {
  font-size: 0.75rem;
  color: var(--gray-600);
  line-height: 1.5;
}

/* ========== STATS ========== */
.stats {
  background: var(--accent);
  padding: 48px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.stat-item { text-align: center; }
.stat-number {
  font-family: var(--font-en);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--gray-400);
  letter-spacing: 0.05em;
}

/* ========== SERVICE CARDS ========== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--white);
  border-radius: 16px;
  padding: 40px 32px;
  border: 1px solid var(--gray-100);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute; top: 0; left: 0; width: 4px; height: 100%;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 52px; height: 52px;
  background: var(--primary-light);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  font-size: 1.4rem;
  color: var(--primary);
}
.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}
.service-card p {
  font-size: 0.85rem;
  color: var(--gray-600);
  line-height: 1.8;
}

/* ========== PHILOSOPHY ========== */
.philosophy-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.philosophy-card {
  background: var(--white);
  border-radius: 12px;
  padding: 28px 16px;
  text-align: center;
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.philosophy-card:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.philosophy-num {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}
.philosophy-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}
.philosophy-card p {
  font-size: 0.72rem;
  color: var(--gray-600);
  line-height: 1.7;
}

/* ========== WORKS ========== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.work-card {
  border-radius: 16px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}
.work-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.work-card-img {
  height: 220px;
  overflow: hidden;
}
.work-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.work-card:hover .work-card-img img { transform: scale(1.05); }
.work-card-body { padding: 24px; }
.work-card-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 3px 12px;
  border-radius: 100px;
  margin-bottom: 10px;
}
.work-card h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
}
.work-card p {
  font-size: 0.78rem;
  color: var(--gray-600);
}

/* ========== COMPANY TABLE ========== */
.company-table {
  width: 100%;
  border-collapse: collapse;
}
.company-table tr {
  border-bottom: 1px solid var(--gray-200);
}
.company-table th {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  padding: 20px 0;
  width: 180px;
  text-align: left;
  vertical-align: top;
}
.company-table td {
  font-size: 0.9rem;
  color: var(--gray-700);
  padding: 20px 0 20px 24px;
  line-height: 1.8;
}

/* ========== CONTACT FORM ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.contact-info-card {
  background: var(--primary-pale);
  border-radius: 16px;
  padding: 40px;
}
.contact-info-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 24px;
}
.contact-info-item {
  display: flex; gap: 16px; align-items: flex-start;
  margin-bottom: 24px;
}
.contact-info-icon {
  width: 40px; height: 40px;
  background: var(--primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: var(--white);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex-shrink: 0;
}
.contact-info-item h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.contact-info-item p {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 500;
}
.form-group { margin-bottom: 24px; }
.form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 8px;
}
.form-label .required {
  font-size: 0.68rem;
  color: var(--white);
  background: var(--primary);
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: 8px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.9rem;
  font-family: var(--font-ja);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  background: var(--white);
  transition: var(--transition);
  color: var(--gray-800);
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(91,184,212,0.15);
}
.form-textarea { min-height: 160px; resize: vertical; }
.btn-submit {
  width: 100%;
  padding: 16px;
  font-size: 1rem;
  font-weight: 700;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--accent);
  color: var(--gray-400);
  padding: 64px 0 32px;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.footer-brand h3 {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 0.78rem;
  line-height: 1.9;
}
.footer-nav h4,
.footer-contact h4 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}
.footer-nav a {
  display: block;
  font-size: 0.8rem;
  color: var(--gray-500);
  padding: 4px 0;
}
.footer-nav a:hover { color: var(--primary); }
.footer-contact p {
  font-size: 0.8rem;
  margin-bottom: 6px;
}
.footer-bottom {
  text-align: center;
  font-size: 0.72rem;
  color: var(--gray-600);
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-sns { display: flex; gap: 12px; margin-top: 16px; }
.footer-sns a {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-400);
  font-size: 0.9rem;
  transition: var(--transition);
}
.footer-sns a:hover { background: var(--primary); color: var(--white); }

/* ========== PAGE HERO ========== */
.page-hero {
  background: linear-gradient(135deg, var(--primary-pale) 0%, var(--gray-50) 100%);
  padding: 140px 0 60px;
  text-align: center;
}
.page-hero-label {
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 8px;
}
.page-hero-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--accent);
}

/* ========== CTA SECTION ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 80px 0;
  text-align: center;
  color: var(--white);
}
.cta-section h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-section p {
  font-size: 0.95rem;
  opacity: 0.85;
  margin-bottom: 32px;
}
.btn-white {
  background: var(--white);
  color: var(--primary);
}
.btn-white:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); }

/* ========== VISION ========== */
.vision-block {
  background: var(--white);
  border-radius: 20px;
  padding: 48px;
  border: 1px solid var(--gray-100);
  margin-bottom: 32px;
}
.vision-block h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}
.vision-block p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 2;
}
.policy-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.policy-list li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.88rem;
  color: var(--gray-700);
  padding: 12px 16px;
  background: var(--primary-pale);
  border-radius: 8px;
}
.policy-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

/* ========== AREA TAGS ========== */
.area-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.area-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--primary-dark);
  background: var(--primary-light);
  padding: 8px 20px;
  border-radius: 100px;
}

/* ========== ANIMATIONS ========== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .header-nav { display: none; }
  .header-cta { display: none; }
  .hamburger { display: flex; }
  .mobile-nav { display: block; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 100px; }
  .hero-title { font-size: 2rem; }
  .hero-visual { order: -1; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid { grid-template-columns: 1fr; }
  .works-grid { grid-template-columns: 1fr; }
  .philosophy-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .policy-list { grid-template-columns: 1fr; }
  .section-title { font-size: 1.6rem; }
  .company-table th { width: 120px; font-size: 0.8rem; }
  .company-table td { font-size: 0.82rem; padding-left: 16px; }
}