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

:root {
  --bg: #F9F9F9;
  --bg-white: #FFFFFF;
  --bg-concrete: #F0F0F0;
  --bg-concrete-dark: #E0E0E0;
  --text: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --accent: #C59E9A; /* Dusty Rose */
  --accent-light: #E8D5D3;
  --accent-dark: #A6827E;
  --border: #E5E5E5;
  --border-hover: #D0D0D0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow: none;
  --shadow-lg: none;
  --transition: 200ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

:root {
  --bg: #F9F9F9;
  --bg-white: #FFFFFF;
  --bg-concrete: #F0F0F0;
  --bg-concrete-dark: #E0E0E0;
  --text: #333333;
  --text-secondary: #666666;
  --text-muted: #999999;
  --accent: #C59E9A; /* Dusty Rose */
  --accent-light: #E8D5D3;
  --accent-dark: #A6827E;
  --border: #E5E5E5;
  --border-hover: #D0D0D0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow: none;
  --shadow-lg: none;
  --transition: 200ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: var(--transition);
}

.nav.scrolled {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-logo .accent {
  color: var(--accent);
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text);
}

.nav-cta {
  padding: 8px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text) !important;
  transition: var(--transition);
}

.nav-cta:hover {
  border-color: var(--accent);
  background: rgba(139, 92, 246, 0.1);
}

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

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

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-blob {
  display: none;
}

.hero-content {
  max-width: 800px;
}

.hero-tag {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 24px;
}

.hero-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.gradient-text {
  color: var(--accent-dark);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}

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

.stat-number {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  font-weight: 600;
  color: var(--text);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--text);
  border: 1px solid var(--border);
}

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

.btn-primary:hover {
  background: var(--accent-dark);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--text);
  border: 1px solid var(--border);
}

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

.btn-sm {
  padding: 10px 20px;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
}

/* Sections */
.section {
  padding: 120px 0;
}

.section-tag {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.section-tag.center {
  text-align: center;
}

.section-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-title.center {
  text-align: center;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 64px;
  text-align: center;
  line-height: 1.7;
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-desc {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 40px;
}

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

.feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-concrete);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--accent-dark);
  font-size: 1rem;
  flex-shrink: 0;
}

.feature-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.feature-text strong {
  color: var(--text);
  font-weight: 500;
}

.feature-text span {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.about-visual {
  display: flex;
  justify-content: center;
}

.visual-card {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.kumiko-pattern {
  position: relative;
  width: 100%;
  height: 100%;
}

.k-line {
  position: absolute;
  background: var(--border-hover);
}

.k-h1, .k-h2, .k-h3 {
  height: 1px;
  width: 100%;
  left: 0;
}

.k-h1 { top: 25%; }
.k-h2 { top: 50%; }
.k-h3 { top: 75%; }

.k-v1, .k-v2, .k-v3 {
  width: 1px;
  height: 100%;
  top: 0;
}

.k-v1 { left: 25%; }
.k-v2 { left: 50%; }
.k-v3 { left: 75%; }

.k-d1 {
  width: 141%;
  height: 1px;
  top: 50%;
  left: -20%;
  transform: rotate(45deg);
}

.k-d2 {
  width: 141%;
  height: 1px;
  top: 50%;
  left: -20%;
  transform: rotate(-45deg);
}

/* Panels */
.panels {
  background: var(--bg-concrete);
}

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

.panel-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.panel-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-light);
}

.panel-visual {
  aspect-ratio: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.panel-visual-1 {
  background: var(--bg-concrete);
}

.panel-visual-2 {
  background: var(--bg-concrete);
}

.panel-visual-3 {
  background: var(--bg-concrete);
}

.panel-pattern {
  width: 70%;
  height: 70%;
  position: relative;
}

/* Asanoha pattern - diamond grid */
.p-asanoha {
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(60deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(-60deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(120deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(-120deg, var(--border-hover) 1px, transparent 1px);
  background-size: 40px 70px;
  background-position: center;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
}

/* Kagome pattern - woven basket */
.p-kagome {
  width: 100%;
  height: 100%;
  background-image:
    repeating-linear-gradient(0deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 20px),
    repeating-linear-gradient(90deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 20px),
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 28px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 28px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
}

/* Sayagata pattern - interlocking keys */
.p-sayagata {
  width: 100%;
  height: 100%;
  background-image:
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  position: relative;
}

.p-sayagata::before {
  content: '';
  position: absolute;
  inset: 10%;
  background:
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px);
  transform: rotate(90deg);
}

.panel-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel-badge.new {
  background: var(--accent-dark);
}

.panel-info {
  padding: 24px;
}

.panel-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.panel-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.panel-specs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--bg-concrete);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.spec {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
}

.spec span {
  color: var(--text-muted);
}

.spec strong {
  color: var(--text);
  font-weight: 500;
}

.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-price {
  font-family: 'Playfair Display', serif;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text);
}

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

.panel-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.panel-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-light);
}

.panel-visual {
  aspect-ratio: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.panel-visual-1 {
  background: var(--bg-concrete);
}

.panel-visual-2 {
  background: var(--bg-concrete);
}

.panel-visual-3 {
  background: var(--bg-concrete);
}

.panel-pattern {
  width: 70%;
  height: 70%;
  position: relative;
}

/* Asanoha pattern - diamond grid */
.p-asanoha {
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(60deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(-60deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(120deg, var(--border-hover) 1px, transparent 1px),
    linear-gradient(-120deg, var(--border-hover) 1px, transparent 1px);
  background-size: 40px 70px;
  background-position: center;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
}

/* Kagome pattern - woven basket */
.p-kagome {
  width: 100%;
  height: 100%;
  background-image:
    repeating-linear-gradient(0deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 20px),
    repeating-linear-gradient(90deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 20px),
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 28px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 28px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
}

/* Sayagata pattern - interlocking keys */
.p-sayagata {
  width: 100%;
  height: 100%;
  background-image:
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-sm);
  position: relative;
}

.p-sayagata::before {
  content: '';
  position: absolute;
  inset: 10%;
  background:
    repeating-linear-gradient(45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px),
    repeating-linear-gradient(-45deg, var(--border-hover) 0px, var(--border-hover) 1px, transparent 1px, transparent 14px);
  transform: rotate(90deg);
}

.panel-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel-badge.new {
  background: var(--accent-dark);
}

.panel-info {
  padding: 24px;
}

.panel-name {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.panel-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.panel-specs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: var(--bg-concrete);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.spec {
  display: flex;
  justify-content: space-between;
  font-size: 0.8125rem;
}

.spec span {
  color: var(--text-muted);
}

.spec strong {
  color: var(--text);
  font-weight: 500;
}

.panel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-price {
  font-family: 'Playfair Display', serif;
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text);
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 64px;
}

.step {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
}

.step:hover {
  border-color: var(--accent-light);
}

.step-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}

.step:hover {
  border-color: var(--accent-light);
}

.step-number {
  font-family: 'Playfair Display', serif;
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 16px;
}

.step-title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-desc {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
}

/* CTA */
.cta {
  position: relative;
  overflow: hidden;
  background: var(--bg-concrete);
}

.cta-bg {
  display: none;
}

.cta-bg {
  display: none;
}

.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.cta-desc {
  color: var(--text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
  margin-bottom: 40px;
}

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

/* Footer */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
  background: var(--bg-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 64px;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 16px;
  max-width: 300px;
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links a,
.footer-contact a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  margin-bottom: 12px;
  transition: var(--transition);
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--text);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

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

/* Animations */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 500ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Responsive */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-visual {
    order: -1;
  }

  .visual-card {
    max-width: 300px;
  }

  .panels-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: 24px;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    gap: 20px;
  }

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

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 100px 24px 60px;
    min-height: auto;
  }

  .hero-stats {
    gap: 32px;
  }

  .hero-scroll {
    display: none;
  }

  .section {
    padding: 80px 0;
  }

  .process-steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 64px auto 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

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

  .stat-number {
    font-size: 1.5rem;
  }

  .panel-footer {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .panel-footer .btn {
    width: 100%;
  }
}