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

:root {
  --color-bg:        #0d0f14;
  --color-surface:   #151820;
  --color-surface2:  #1c2030;
  --color-border:    #272c3d;
  --color-accent:    #00c8ff;
  --color-accent2:   #0094c6;
  --color-text:      #e8eaf0;
  --color-muted:     #7a84a0;
  --color-white:     #ffffff;
  --color-card-bg:   #181c28;

  --font-heading: 'Noto Sans JP', sans-serif;
  --font-body:    'Noto Sans JP', sans-serif;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;

  --max-w: 1200px;
  --section-pad: 80px 24px;
}

html {
  scroll-behavior: smooth;
  background-color: var(--color-bg);
}

body {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  line-height: 1.3;
  color: var(--color-white);
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: 1.1rem; }

p {
  color: var(--color-muted);
  line-height: 1.7;
}

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

.section-title {
  text-align: center;
  margin-bottom: 48px;
}

.section-title.center-content {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-title h2 {
  margin-bottom: 12px;
}

.section-title p {
  max-width: 600px;
  margin: 0 auto;
}

.section-label {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  line-height: 1;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background-color: var(--color-accent2);
  border-color: var(--color-accent2);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-muted);
  color: var(--color-white);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 20px 24px;
  z-index: 200;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-banner-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cookie-banner-content {
  flex: 1;
}

.cookie-banner-content h3 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--color-white);
}

.cookie-banner-content p {
  font-size: 13px;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.cookie-link {
  display: inline-block;
  font-size: 13px;
  color: var(--color-accent);
  font-weight: 500;
  text-decoration: underline;
}

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

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

.cookie-banner-actions .btn {
  padding: 10px 20px;
  font-size: 13px;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .cookie-banner-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .cookie-banner-actions {
    width: 100%;
  }
  .cookie-banner-actions .btn {
    flex: 1;
  }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(13, 15, 20, 0.95);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.logo-block {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-block img,
.logo-block svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: -0.3px;
}

.brand-name span {
  color: var(--color-accent);
}

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

.header-nav a {
  font-size: 14px;
  color: var(--color-muted);
  font-weight: 500;
}

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

.header-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 16px 24px;
  gap: 16px;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-size: 15px;
  color: var(--color-muted);
  font-weight: 500;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
}

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

.hero {
  background-color: var(--color-bg);
  padding: 100px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,200,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-text {
  max-width: 540px;
}

.hero-text .section-label {
  margin-bottom: 16px;
}

.hero-text h1 {
  margin-bottom: 20px;
}

.hero-text p {
  margin-bottom: 32px;
  font-size: 16px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  position: relative;
}

.hero-image .photo-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.photo-placeholder {
  background-color: var(--color-surface2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--color-muted);
  font-size: 13px;
}

.photo-placeholder svg {
  width: 40px;
  height: 40px;
  opacity: 0.4;
}

.features {
  padding: var(--section-pad);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.feature-card {
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background-color: var(--color-card-bg);
}

.feature-icon {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  background-color: rgba(0,200,255,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 26px;
  height: 26px;
  color: var(--color-accent);
  fill: var(--color-accent);
}

.feature-card h4 {
  margin-bottom: 10px;
  font-size: 15px;
}

.feature-card p {
  font-size: 13px;
}

.about-brand {
  padding: var(--section-pad);
  background-color: var(--color-bg);
}

.about-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image .photo-placeholder {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: var(--radius-lg);
}

.about-text .section-label {
  margin-bottom: 12px;
}

.about-text h2 {
  margin-bottom: 20px;
}

.about-text p {
  margin-bottom: 16px;
}

.about-text .btn {
  margin-top: 12px;
}

.categories {
  padding: var(--section-pad);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.cat-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
}

.cat-card:hover {
  border-color: var(--color-accent2);
}

.cat-image .photo-placeholder {
  width: 100%;
  aspect-ratio: 3/2;
  border-radius: 0;
}

.cat-info {
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cat-info h4 {
  font-size: 15px;
}

.cat-info span {
  font-size: 12px;
  color: var(--color-accent);
  font-weight: 600;
}

.products {
  padding: var(--section-pad);
  background-color: var(--color-bg);
}

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

.product-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.product-image .photo-placeholder {
  width: 100%;
  aspect-ratio: 1/1;
  border-radius: 0;
}

.product-info {
  padding: 20px;
}

.product-tag {
  display: inline-block;
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-accent);
  font-weight: 700;
  margin-bottom: 10px;
  background-color: rgba(0,200,255,0.1);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.product-info h3 {
  font-size: 15px;
  margin-bottom: 8px;
}

.product-info p {
  font-size: 13px;
  margin-bottom: 16px;
}

.product-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 16px;
}

.product-price .currency {
  font-size: 13px;
  color: var(--color-muted);
  font-weight: 400;
}

.product-actions {
  display: flex;
  gap: 10px;
}

.product-actions .btn {
  flex: 1;
  text-align: center;
  padding: 10px 12px;
  font-size: 13px;
}

.stats {
  padding: var(--section-pad);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-right: 1px solid var(--color-border);
}

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

.stat-number {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 13px;
  color: var(--color-muted);
}

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

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

.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  width: 48px;
  height: 48px;
  background-color: var(--color-accent);
  color: var(--color-bg);
  font-size: 18px;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.step-card h4 {
  margin-bottom: 10px;
  font-size: 15px;
}

.step-card p {
  font-size: 13px;
}

.testimonials {
  padding: var(--section-pad);
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

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

.testimonial-card {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.testimonial-stars svg {
  width: 16px;
  height: 16px;
  fill: #f5a623;
}

.testimonial-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--color-surface2);
  border: 1px solid var(--color-border);
  overflow: hidden;
  flex-shrink: 0;
}

.author-avatar .photo-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 10px;
  gap: 4px;
}

.author-avatar .photo-placeholder svg {
  width: 20px;
  height: 20px;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-white);
}

.author-role {
  font-size: 12px;
  color: var(--color-muted);
}

.cta-band {
  padding: 80px 24px;
  background-color: var(--color-surface2);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.cta-band h2 {
  margin-bottom: 16px;
}

.cta-band p {
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 15px;
}

.newsletter-form {
  display: flex;
  gap: 12px;
  max-width: 480px;
  margin: 0 auto;
  justify-content: center;
}

.newsletter-form input {
  flex: 1;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 14px;
  outline: none;
}

.newsletter-form input::placeholder {
  color: var(--color-muted);
}

.newsletter-form input:focus {
  border-color: var(--color-accent);
}

.contacts {
  padding: var(--section-pad);
  background-color: var(--color-bg);
}

.contacts-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contacts-info h2 {
  margin-bottom: 16px;
}

.contacts-info > p {
  margin-bottom: 36px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background-color: rgba(0,200,255,0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-accent);
}

.contact-detail h4 {
  font-size: 13px;
  color: var(--color-muted);
  font-weight: 500;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact-detail a,
.contact-detail p {
  font-size: 15px;
  color: var(--color-text);
  font-weight: 500;
}

.contact-detail a:hover {
  color: var(--color-accent);
}

.contacts-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.contacts-map .photo-placeholder {
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: 0;
}

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 60px 24px 0;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--color-border);
}

.footer-brand .logo-block {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 13px;
  max-width: 280px;
}

.footer-col h5 {
  font-size: 13px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 13px;
  color: var(--color-muted);
}

.footer-col ul li a:hover {
  color: var(--color-text);
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--color-muted);
}

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a {
  font-size: 12px;
  color: var(--color-muted);
}

.footer-legal a:hover {
  color: var(--color-text);
}

@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-pad: 56px 20px; }

  .header-nav, .header-cta { display: none; }
  .hamburger { display: flex; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding: 60px 20px 56px; }
  .hero-image { order: -1; }

  .about-inner { grid-template-columns: 1fr; gap: 40px; }
  .categories-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .contacts-inner { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { grid-template-columns: 1fr; }

  .stat-item { border-right: none; border-bottom: 1px solid var(--color-border); }
  .stat-item:last-child { border-bottom: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }

  .newsletter-form { flex-direction: column; }
}

@media (max-width: 480px) {
  .products-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
}