/* ============================================
   株式会社ひみつきち コーポレートサイト
   Design: White & Blue, Clean & Modern
   ============================================ */

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

:root {
  /* Colors */
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a5f;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --white: #ffffff;
  --primary: var(--blue-600);
  --primary-light: var(--blue-50);
  --primary-dark: var(--blue-800);

  /* Typography */
  --font-sans: 'Noto Sans JP', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Inter', 'Noto Sans JP', sans-serif;

  /* Spacing */
  --section-padding: 120px;
  --container-width: 1200px;

  /* Transitions */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

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

.container {
  max-width: var(--container-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: var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--gray-200);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
}

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

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: var(--transition);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

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

.nav-link--cta {
  background: var(--primary);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: 6px;
  transition: var(--transition);
}

.nav-link--cta::after {
  display: none;
}

.nav-link--cta:hover {
  background: var(--primary-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-800);
  transition: var(--transition);
}

.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);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--blue-50) 0%, var(--white) 40%, var(--blue-50) 100%);
  z-index: 0;
}

.hero-bg::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--blue-100) 0%, transparent 70%);
  opacity: 0.6;
}

.hero-bg::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--blue-100) 0%, transparent 70%);
  opacity: 0.4;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 24px;
}

.hero-label {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--primary);
  letter-spacing: 0.15em;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.4;
  color: var(--gray-900);
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeUp 0.8s 0.4s forwards;
}

.hero-accent {
  background: linear-gradient(135deg, var(--blue-500), var(--blue-700));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeUp 0.8s 0.6s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  z-index: 1;
  opacity: 0;
  animation: fadeIn 1s 1.2s forwards;
}

.hero-scroll span {
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--gray-400);
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: var(--gray-300);
  position: relative;
  overflow: hidden;
}

.hero-scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary);
  animation: scrollLine 2s infinite;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}

/* --- Sections --- */
.section {
  padding: var(--section-padding) 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.0625rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}

/* --- About --- */
.section-about {
  background: var(--white);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-lead {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gray-900);
  line-height: 1.9;
  margin-bottom: 24px;
}

.about-body {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 16px;
}

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

.number-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--blue-50);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.number-value {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.number-suffix {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: -4px;
}

.number-label {
  font-size: 0.8125rem;
  color: var(--gray-500);
  margin-top: 8px;
}

/* --- Overview Grid --- */
.section-overview {
  background: var(--gray-50);
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.overview-card {
  background: var(--white);
  border-radius: 16px;
  padding: 40px 32px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.overview-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  border-color: var(--blue-200);
}

.overview-icon {
  width: 64px;
  height: 64px;
  color: var(--primary);
  margin-bottom: 24px;
}

.overview-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--gray-900);
}

.overview-desc {
  font-size: 0.9375rem;
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: 20px;
}

.overview-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: auto;
}

/* --- Salon Grid (3 columns) --- */
.section-beauty {
  background: var(--white);
}

.salon-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.salon-tile {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.salon-tile:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
  border-color: var(--blue-200);
}

.salon-tile-image {
  width: 100%;
  aspect-ratio: 16/10;
  background: #f9fafb;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
}

.salon-tile-logo {
  max-width: 85%;
  max-height: 85%;
  object-fit: contain;
}

.salon-tile-body {
  padding: 24px;
}

.salon-tile-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.4;
  margin-bottom: 4px;
}

.salon-tile-company {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-bottom: 12px;
}

.salon-tile-address {
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.salon-tile-contact {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.salon-tile-contact a {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-700);
  transition: var(--transition);
}

.salon-tile-contact a:hover {
  color: var(--primary);
}

.salon-tile-ig {
  display: inline-flex;
  width: 20px;
  height: 20px;
  color: var(--gray-400);
}

.salon-tile-ig:hover {
  color: #E1306C !important;
}

.salon-tile-desc {
  font-size: 0.875rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}

.salon-tile-products {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.salon-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
  cursor: help;
}

.salon-dot--rjpn { background: #3b82f6; }
.salon-dot--suiso { background: #06b6d4; }
.salon-dot--ii { background: #8b5cf6; }
.salon-dot--icolabo { background: #10b981; }
.salon-dot--stem { background: #f59e0b; }
.salon-dot--nmn { background: #ef4444; }
.salon-dot--kitsuke { background: #ec4899; }

.salon-tile-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.salon-tile-tags li {
  font-size: 0.6875rem;
  color: var(--gray-500);
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: 2px 8px;
  border-radius: 100px;
}

.salon-tile-cta {
  display: block;
  text-align: center;
  margin-top: 16px;
  padding: 10px 0;
  background: var(--primary);
  color: var(--white);
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
}

.salon-tile-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Product Legend */
.product-legend {
  text-align: center;
  padding: 24px 32px;
  background: var(--gray-50);
  border-radius: 12px;
  border: 1px solid var(--gray-100);
}

.product-legend-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.product-legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* --- Care Product Cards --- */
.section-care {
  background: var(--gray-50);
  padding: var(--section-padding) 0;
}

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

.care-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.care-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  border-color: var(--blue-200);
}

.care-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

.care-icon--rjpn { color: #3b82f6; }
.care-icon--suiso { color: #06b6d4; }
.care-icon--ii { color: #8b5cf6; }
.care-icon--icolabo { color: #10b981; }
.care-icon--stem { color: #f59e0b; }
.care-icon--nmn { color: #ef4444; }
.care-icon--kitsuke { color: #ec4899; }

.care-card-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--blue-600);
  background: var(--blue-50);
  padding: 3px 10px;
  border-radius: 100px;
  margin-bottom: 12px;
  width: fit-content;
}

.care-card-badge--limited {
  color: #d97706;
  background: #fffbeb;
}

.care-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.care-card-tagline {
  font-size: 0.8125rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 20px;
}

.care-card-body {
  flex: 1;
}

.care-qa {
  margin-bottom: 16px;
}

.care-qa:last-child {
  margin-bottom: 0;
}

.care-qa h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: 8px;
  padding-left: 12px;
  border-left: 3px solid var(--primary);
}

.care-qa p {
  font-size: 0.8125rem;
  color: var(--gray-600);
  line-height: 1.8;
}

.care-qa ul {
  padding-left: 0;
}

.care-qa ul li {
  font-size: 0.8125rem;
  color: var(--gray-600);
  padding: 3px 0 3px 16px;
  position: relative;
}

.care-qa ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue-300);
}

.care-card-salons {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.care-salon-tag {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--gray-500);
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  padding: 3px 10px;
  border-radius: 100px;
}

.care-salon-tag--accent {
  color: var(--blue-600);
  background: var(--blue-50);
  border-color: var(--blue-200);
}

/* --- Tech Cards --- */
.section-tech {
  background: var(--gray-900);
  color: var(--white);
}

.section-tech .section-label {
  color: var(--blue-400);
}

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

.section-tech .section-subtitle {
  color: var(--gray-400);
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.tech-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.tech-card:hover {
  border-color: rgba(96, 165, 250, 0.3);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.tech-card-header {
  padding: 40px 36px 24px;
}

.tech-badge {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.2);
  color: var(--blue-300);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.tech-name {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tech-tagline {
  font-size: 1rem;
  color: var(--blue-300);
  font-weight: 500;
}

.tech-card-body {
  padding: 0 36px 24px;
  flex: 1;
}

.tech-desc {
  font-size: 0.9375rem;
  color: var(--gray-400);
  line-height: 1.8;
  margin-bottom: 24px;
}

.tech-features {
  margin-bottom: 28px;
}

.tech-features li {
  font-size: 0.875rem;
  color: var(--gray-300);
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}

.tech-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue-400);
}

.tech-stats {
  display: flex;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.tech-stat-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue-400);
}

.tech-stat-label {
  font-size: 0.75rem;
  color: var(--gray-500);
}

.tech-card-footer {
  padding: 0 36px 36px;
  margin-top: auto;
}

.tech-card-footer .btn-primary {
  width: 100%;
}

/* --- Products --- */
.section-products {
  background: var(--white);
}

.product-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  max-width: 960px;
  margin: 0 auto;
}

.product-image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  background: linear-gradient(135deg, #e8d5b7, #f5e6d3);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #8b6914;
}

.product-name {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 8px;
}

.product-tagline {
  font-size: 1.0625rem;
  color: var(--primary);
  font-weight: 500;
  margin-bottom: 24px;
}

.product-desc {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.9;
  margin-bottom: 16px;
}

/* --- Company --- */
.section-company {
  background: var(--gray-50);
}

.company-table-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

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

.company-table th,
.company-table td {
  padding: 20px 24px;
  text-align: left;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.9375rem;
  vertical-align: top;
}

.company-table th {
  width: 160px;
  font-weight: 600;
  color: var(--gray-900);
  background: rgba(59, 130, 246, 0.04);
}

.company-table td {
  color: var(--gray-600);
  line-height: 1.8;
}

.company-group {
  max-width: 800px;
  margin: 48px auto 0;
}

.company-group-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 3px solid var(--primary);
}

/* --- Contact --- */
.section-contact {
  background: var(--white);
  padding-bottom: 64px;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 960px;
  margin: 0 auto;
}

.contact-card {
  text-align: center;
  padding: 40px 24px;
  background: var(--gray-50);
  border-radius: 16px;
  border: 1px solid var(--gray-100);
  transition: var(--transition);
}

.contact-card:hover {
  border-color: var(--blue-200);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
}

.contact-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--primary);
}

.contact-card h3 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.contact-value {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
  display: block;
  margin-bottom: 8px;
  transition: var(--transition);
}

a.contact-value:hover {
  color: var(--primary);
}

.contact-value--small {
  font-size: 0.9375rem;
}

.contact-note {
  font-size: 0.8125rem;
  color: var(--gray-400);
}

/* --- Footer --- */
.footer {
  background: var(--gray-900);
  color: var(--gray-400);
  padding: 64px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-top: 8px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-300);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  font-size: 0.875rem;
  color: var(--gray-500);
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--white);
}

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--gray-600);
}

/* --- Animations --- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes scrollLine {
  0% { top: -100%; }
  100% { top: 100%; }
}

/* Scroll animation class */
.fade-in {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-numbers {
    grid-template-columns: repeat(3, 1fr);
  }

  .overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .overview-grid .overview-card:last-child {
    grid-column: 1 / -1;
    max-width: 400px;
    margin: 0 auto;
  }

  .salon-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .care-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
    margin: 0 auto;
  }

  .product-card {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .product-image-placeholder {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: var(--white);
    box-shadow: -4px 0 24px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    padding: 80px 32px 32px;
    z-index: 999;
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--gray-100);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link--cta {
    margin-top: 16px;
    text-align: center;
    border: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-title {
    font-size: 1.75rem;
  }

  .hero-description {
    font-size: 1rem;
  }

  .sp-hide {
    display: none;
  }

  .salon-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto 48px;
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions .btn {
    width: 100%;
    max-width: 280px;
  }

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

  .overview-grid .overview-card:last-child {
    max-width: none;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .company-table th {
    width: 120px;
    padding: 16px 12px;
    font-size: 0.8125rem;
  }

  .company-table td {
    padding: 16px 12px;
    font-size: 0.8125rem;
  }

  .section-header {
    margin-bottom: 48px;
  }
}

@media (max-width: 480px) {
  .about-numbers {
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .number-card {
    padding: 20px 8px;
  }

  .number-value {
    font-size: 2.25rem;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .care-card {
    padding: 24px 20px;
  }

  .tech-card-header,
  .tech-card-body,
  .tech-card-footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .tech-stats {
    flex-wrap: wrap;
  }
}

/* Mobile nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}