:root {
  --blue:          #1A5FD4;
  --blue-hover:    #154FB2;
  --blue-light:    #EBF2FF;
  --green:         #22C55E;
  --green-hover:   #16A34A;
  --green-light:   #F0FDF4;
  --orange:        #F97316;
  --orange-light:  #FFF7ED;
  --bg:            #F4F6FA;
  --dark:          #1A2340;
  --text:          #334155;
  --text-muted:    #64748B;
  --border:        #DDE3EE;
  --white:         #FFFFFF;
  --radius:        12px;
  --radius-sm:     8px;
  --shadow-sm:     0 1px 4px rgba(0,0,0,0.07);
  --shadow-md:     0 4px 20px rgba(0,0,0,0.1);
}

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

html { scroll-behavior: auto; }

body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans',
               'Yu Gothic UI', 'Meiryo', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a   { color: var(--blue); text-decoration: none; }
address { font-style: normal; }
ul, ol  { list-style: none; }

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 28px;
}

section { padding: 80px 0; }

h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; color: var(--dark); }
h1 { font-size: clamp(30px, 5vw, 52px); }
h2 { font-size: clamp(24px, 3.5vw, 38px); }
h3 { font-size: clamp(16px, 2vw, 20px); }
p  { line-height: 1.75; }

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-title {
  margin-bottom: 14px;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 44px;
  height: 4px;
  background-color: var(--green);
  border-radius: 2px;
  margin: 10px auto 0;
}

.section-sub {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 540px;
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

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

.btn-secondary {
  background-color: var(--green);
  color: var(--white);
  border-color: var(--green);
}
.btn-secondary:hover { background-color: var(--green-hover); border-color: var(--green-hover); color: var(--white); }

.btn-outline {
  background-color: transparent;
  color: var(--blue);
  border-color: var(--blue);
}
.btn-outline:hover { background-color: var(--blue); color: var(--white); }

.btn-white {
  background-color: var(--white);
  color: var(--blue);
  border-color: var(--white);
}
.btn-white:hover { background-color: var(--blue-light); color: var(--blue); }

.btn-outline-white {
  background-color: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.8);
}
.btn-outline-white:hover { background-color: rgba(255,255,255,0.12); }

.btn-sm {
  padding: 11px 18px;
  font-size: 14px;
  width: 100%;
  justify-content: center;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.brand-name {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.3px;
}

.site-header {
  background-color: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
}

.photo-placeholder {
  background-color: #D8DFE8;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.photo-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(45deg, rgba(0,0,0,0.025) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(0,0,0,0.025) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(0,0,0,0.025) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(0,0,0,0.025) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

.photo-placeholder span {
  position: relative;
  z-index: 1;
  background-color: rgba(255,255,255,0.72);
  padding: 5px 12px;
  border-radius: 6px;
  font-weight: 600;
  letter-spacing: 0.2px;
}

.photo-lg      { width: 100%; aspect-ratio: 4/3; }
.photo-course  { width: 100%; aspect-ratio: 16/9; }
.photo-avatar  { width: 58px; height: 58px; border-radius: 50%; flex-shrink: 0; }

.hero {
  background-color: var(--white);
  padding: 88px 0 100px;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-badge {
  display: inline-block;
  color: var(--green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 18px;
  background-color: var(--green-light);
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid #BBF7D0;
}

.hero-title { margin-bottom: 22px; }
.text-blue  { color: var(--blue); }

.hero-desc {
  font-size: 17px;
  color: var(--text-muted);
  margin-bottom: 38px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 0 0 44%;
  width: 44%;
}

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

.features .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
}

.feature-card {
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.feature-icon { width: 52px; height: 52px; margin-bottom: 20px; }
.feature-icon svg { width: 52px; height: 52px; }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p  { color: var(--text-muted); font-size: 15px; line-height: 1.7; }

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

.courses .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
}

.course-card {
  background-color: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.course-body {
  padding: 22px 24px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.course-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--blue);
  background-color: var(--blue-light);
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.course-card h3 { font-size: 16px; margin-bottom: 9px; }

.course-card p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 18px;
}

.course-price {
  font-size: 24px;
  font-weight: 800;
  color: var(--blue);
  margin-bottom: 16px;
}

.course-price span {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-muted);
}

.how-it-works { background-color: var(--bg); }

.how-it-works .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  position: relative;
  width: 100%;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 29px;
  left: calc(12.5% + 20px);
  right: calc(12.5% + 20px);
  height: 2px;
  background-color: var(--border);
  z-index: 0;
}

.step-item { text-align: center; padding: 0 12px; }

.step-number {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background-color: var(--blue);
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 22px;
  position: relative;
  z-index: 1;
  border: 3px solid var(--bg);
}

.step-item h3 { font-size: 15px; margin-bottom: 8px; }
.step-item p  { font-size: 14px; color: var(--text-muted); line-height: 1.6; }

.stats {
  background-color: var(--blue);
  padding: 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stat-item {
  text-align: center;
  padding: 52px 20px;
  border-right: 1px solid rgba(255,255,255,0.14);
}

.stat-item:last-child { border-right: none; }

.stat-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-number span { font-size: 22px; font-weight: 600; }

.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.72);
  font-weight: 500;
  letter-spacing: 0.3px;
}

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

.categories .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
  width: 100%;
}

.category-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.category-icon     { width: 64px; height: 64px; }
.category-icon svg { width: 64px; height: 64px; }

.category-item span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

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

.testimonials .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
}

.testimonial-card {
  background-color: var(--white);
  border-radius: var(--radius);
  padding: 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.testimonial-meta { flex: 1; }
.testimonial-name { font-weight: 700; font-size: 15px; color: var(--dark); }
.testimonial-course { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

.testimonial-text {
  font-size: 15px;
  color: var(--text);
  line-height: 1.75;
  border-left: 3px solid var(--green);
  padding-left: 14px;
}

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

.faq .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.faq-list {
  max-width: 730px;
  margin: 0;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-question {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 16px;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--white);
  user-select: none;
  gap: 16px;
}

.faq-question::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--blue);
  flex-shrink: 0;
  line-height: 1;
}

.faq-item.open .faq-question { background-color: var(--blue-light); }
.faq-item.open .faq-question::after { content: '\2212'; }

.faq-answer {
  display: none;
  padding: 16px 24px 22px;
  font-size: 15px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background-color: var(--white);
  line-height: 1.75;
}

.faq-item.open .faq-answer { display: block; }

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

.cta-section .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta-box {
  background-color: var(--dark);
  border-radius: var(--radius);
  padding: 68px 56px;
  text-align: center;
}

.cta-box h2 { color: var(--white); margin-bottom: 18px; }

.cta-box p {
  color: rgba(255,255,255,0.72);
  max-width: 560px;
  margin: 0 auto 38px;
  font-size: 16px;
  line-height: 1.8;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.contacts .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.contacts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 28px;
  background-color: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.contact-icon { width: 46px; height: 46px; flex-shrink: 0; }
.contact-icon svg { width: 46px; height: 46px; }

.contact-info { display: flex; flex-direction: column; gap: 5px; }

.contact-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--text-muted);
}

.contact-value {
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  text-decoration: none;
  line-height: 1.5;
}

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

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--dark);
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  box-shadow: 0 -4px 16px rgba(0,0,0,0.3);
  max-height: 90vh;
  overflow-y: auto;
}

.cookie-banner.show { transform: translateY(0); }

.cookie-container {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 28px;
  flex-wrap: wrap;
}

.cookie-message {
  color: rgba(255,255,255,0.85);
  font-size: 14px;
  line-height: 1.7;
  flex: 1;
  min-width: 280px;
}

.cookie-message strong {
  display: block;
  color: var(--white);
  font-weight: 700;
  margin-bottom: 6px;
  font-size: 15px;
}

.cookie-message p {
  margin-bottom: 8px;
}

.cookie-link {
  color: rgba(255,255,255,0.95);
  text-decoration: underline;
  font-weight: 500;
  transition: color 0.2s ease;
}

.cookie-link:hover { color: var(--white); }

.cookie-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

.cookie-btn {
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.cookie-essential-only {
  background-color: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
}

.cookie-essential-only:hover {
  background-color: rgba(255,255,255,0.15);
}

.cookie-customize {
  background-color: rgba(26, 95, 212, 0.2);
  color: var(--blue);
  border: 1px solid var(--blue);
}

.cookie-customize:hover {
  background-color: rgba(26, 95, 212, 0.3);
}

.cookie-accept {
  background-color: var(--green);
  color: var(--white);
}

.cookie-accept:hover {
  background-color: var(--green-hover);
}

.cookie-customize-panel {
  background-color: rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 20px;
  display: none;
}

.cookie-customize-panel[hidden] {
  display: none !important;
}

.cookie-customize-panel.show {
  display: block;
}

.cookie-customize-content h3 {
  color: var(--white);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

.cookie-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.cookie-option {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 12px;
  background-color: rgba(255,255,255,0.05);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: all 0.2s ease;
}

.cookie-option:hover {
  background-color: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.2);
}

.cookie-option input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--green);
}

.cookie-option input[type="checkbox"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.option-title {
  display: block;
  color: var(--white);
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 3px;
}

.option-desc {
  display: block;
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  line-height: 1.5;
}

.customize-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

.cookie-customize-save {
  background-color: var(--green);
  color: var(--white);
}

.cookie-customize-save:hover {
  background-color: var(--green-hover);
}

.cookie-customize-cancel {
  background-color: rgba(255,255,255,0.1);
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.3);
}

.cookie-customize-cancel:hover {
  background-color: rgba(255,255,255,0.15);
}

.site-footer {
  background-color: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 52px 0 32px;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 48px;
  margin-bottom: 32px;
  align-items: start;
}

.footer-brand {
  min-width: 200px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.nav-column h3 {
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}

.nav-column a {
  display: block;
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s ease;
}

.nav-column a:hover { color: var(--white); }

.footer-brand .brand-name { color: var(--white); }

.footer-tagline {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  margin-top: 12px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.38);
}

@media (max-width: 1024px) {
  .courses-grid { grid-template-columns: repeat(2, 1fr); }
  .categories-grid { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 768px) {
  section { padding: 60px 0; }

  .hero-container { flex-direction: column; gap: 36px; }
  .hero-content { max-width: 100%; }
  .hero-image { width: 100%; }

  .features-grid { grid-template-columns: 1fr; }
  .courses-grid  { grid-template-columns: 1fr; }

  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    padding: 36px 20px;
  }

  .testimonials-grid { grid-template-columns: 1fr; }
  .contacts-grid     { grid-template-columns: 1fr; }

  .cta-box { padding: 44px 24px; }

  .footer-content { grid-template-columns: 1fr; gap: 32px; }
  .footer-nav { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  
  .cookie-container { flex-direction: column; gap: 20px; }
  .cookie-actions { width: 100%; }
}

@media (max-width: 480px) {
  .categories-grid { grid-template-columns: repeat(3, 1fr); }
  .steps-grid      { grid-template-columns: 1fr; }
  .stats-grid      { grid-template-columns: 1fr; }
  .stat-item       { border-bottom: 1px solid rgba(255,255,255,0.12); }
  
  .footer-nav { grid-template-columns: 1fr; gap: 16px; }
  .cookie-options { grid-template-columns: 1fr; }
  .customize-actions { flex-direction: column; }
}