/* ═══════════════════════════════════════════
   侘寂·猫隧道 — Design System
   ═══════════════════════════════════════════ */

:root {
  /* ── Earth Palette ── */
  --clay:      #C4A882;
  --taupe:     #8B7D6B;
  --linen:     #D4C5A9;
  --charcoal:  #2C2A28;
  --cream:     #E8DDD0;
  --caramel:   #A67C52;
  --sand:      #F0E8DC;
  --ivory:     #F7F3ED;
  --stone:     #B8ADA0;
  --umber:     #6B5B4E;

  /* ── Functional ── */
  --bg-primary:    var(--ivory);
  --bg-secondary:  var(--cream);
  --bg-dark:       var(--charcoal);
  --text-primary:  var(--charcoal);
  --text-secondary: var(--umber);
  --text-light:    var(--cream);
  --accent:        var(--caramel);
  --accent-hover:  #8E6B44;
  --border:        rgba(139, 125, 107, 0.15);
  --glass-bg:      rgba(247, 243, 237, 0.7);
  --glass-border:  rgba(196, 168, 130, 0.2);
  --shadow-subtle: 0 2px 20px rgba(44, 42, 40, 0.06);
  --shadow-elevated: 0 8px 40px rgba(44, 42, 40, 0.10);
  --shadow-card:   0 4px 30px rgba(44, 42, 40, 0.08);

  /* ── Typography ── */
  --font-display: 'PP Editorial New', 'Times New Roman', Georgia, serif;
  --font-body:    'FK Grotesk', 'Helvetica Neue', Helvetica, -apple-system, sans-serif;
  --font-mono:    'FK Grotesk Mono', 'Courier New', monospace;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-wide: 0.08em;

  /* ── Spacing ── */
  --section-py: clamp(5rem, 12vw, 10rem);
  --container: min(90%, 1280px);
  --gutter: clamp(1rem, 3vw, 2rem);

  /* ── Transitions ── */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-smooth:   cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --duration-slow: 1.2s;
  --duration-med:  0.6s;
  --duration-fast: 0.3s;
}

/* ── Base ── */
body {
  font-family: var(--font-body);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  font-weight: 300;
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.7;
  letter-spacing: 0.01em;
}

::selection {
  background: var(--clay);
  color: var(--ivory);
}

/* ── Container ── */
.container {
  width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: var(--letter-spacing-tight);
}

h1 { font-size: clamp(2.8rem, 6vw, 5.5rem); }
h2 { font-size: clamp(2.2rem, 4vw, 3.8rem); }
h3 { font-size: clamp(1.4rem, 2.5vw, 2rem); }
h4 { font-size: clamp(1.1rem, 1.8vw, 1.4rem); }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--taupe);
  margin-bottom: 1.5rem;
  display: block;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.9rem;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  padding: 1rem 2.4rem;
  border-radius: 2px;
  transition: all var(--duration-fast) var(--ease-smooth);
  position: relative;
  overflow: hidden;
}

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

.btn-primary:hover {
  background: var(--umber);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(44, 42, 40, 0.15);
}

.btn-outline {
  background: transparent;
  color: var(--charcoal);
  border: 1px solid var(--charcoal);
}

.btn-outline:hover {
  background: var(--charcoal);
  color: var(--cream);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  padding: 0.6rem 0;
}

.btn-ghost::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--charcoal);
  transition: width var(--duration-med) var(--ease-out-expo);
}

.btn-ghost:hover {
  color: var(--charcoal);
}

.btn-ghost:hover::after {
  width: 100%;
}

/* ── Section ── */
.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-light);
}

/* ── Noise Overlay ── */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ── Grain Texture (section backgrounds) ── */
.grain {
  position: relative;
}

.grain::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  pointer-events: none;
}

/* ── Glass Card ── */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 2.5rem;
}

/* ── Scroll Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity var(--duration-slow) var(--ease-out-expo),
              transform var(--duration-slow) var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.25s; }
.reveal-delay-3 { transition-delay: 0.4s; }
.reveal-delay-4 { transition-delay: 0.55s; }

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 0;
  transition: all var(--duration-med) var(--ease-smooth);
}

.site-header.scrolled {
  background: rgba(247, 243, 237, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--charcoal);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.logo-mark {
  width: 8px;
  height: 8px;
  background: var(--caramel);
  border-radius: 50%;
  display: inline-block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.8rem;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-smooth);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--charcoal);
  transition: width var(--duration-med) var(--ease-out-expo);
}

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 24px;
  height: 1.5px;
  background: var(--charcoal);
  transition: all var(--duration-fast) var(--ease-smooth);
}

/* ── Hero ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-primary);
}

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

.hero-bg-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(196, 168, 130, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 20% 70%, rgba(166, 124, 82, 0.08) 0%, transparent 50%);
}

.hero-bg-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}

.hero-shape-1 {
  width: 50vw;
  height: 50vw;
  top: -20%;
  right: -10%;
  background: rgba(196, 168, 130, 0.15);
  animation: float 20s ease-in-out infinite;
}

.hero-shape-2 {
  width: 35vw;
  height: 35vw;
  bottom: -15%;
  left: -8%;
  background: rgba(166, 124, 82, 0.1);
  animation: float 25s ease-in-out infinite reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-silhouette {
  position: absolute;
  bottom: 0;
  right: 5%;
  width: 45%;
  height: 70vh;
  z-index: 1;
  opacity: 0.15;
}

.hero-silhouette svg {
  width: 100%;
  height: 100%;
  fill: var(--charcoal);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  padding: 8rem 0 4rem;
}

.hero-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--taupe);
  margin-bottom: 2rem;
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border);
  border-radius: 2px;
}

.hero-title {
  margin-bottom: 1.8rem;
}

.hero-title .line {
  display: block;
  overflow: hidden;
}

.hero-title .line span {
  display: block;
  animation: none;
}

.hero-title .line:nth-child(2) {
  font-style: italic;
  color: var(--caramel);
  padding-left: 2rem;
}

.hero-desc {
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 2.8rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--taupe);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: bob 2s ease-in-out infinite;
}

.hero-scroll-indicator .line {
  width: 1px;
  height: 40px;
  background: var(--taupe);
  opacity: 0.4;
}

@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ═══════════════════════════════════════════
   Philosophy Section
   ═══════════════════════════════════════════ */

#philosophy {
  background: var(--bg-secondary);
}

.philosophy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.philosophy-media {
  position: relative;
  aspect-ratio: 4/5;
  overflow: hidden;
  border-radius: 2px;
}

.philosophy-media-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--linen) 0%, var(--clay) 50%, var(--caramel) 100%);
  display: flex;
  align-items: flex-end;
  padding: 2rem;
}

.philosophy-media-text {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--cream);
  line-height: 1.3;
  max-width: 200px;
  font-style: italic;
}

.philosophy-content {
  padding: 2rem 0;
}

.philosophy-content h2 {
  margin-bottom: 1.5rem;
}

.philosophy-content p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.philosophy-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
}

.philosophy-value {
  border-top: 1px solid var(--border);
  padding-top: 1.2rem;
}

.philosophy-value h4 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  color: var(--caramel);
  margin-bottom: 0.4rem;
}

.philosophy-value p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* ── Modules Section ── */
#modules {
  overflow: hidden;
}

.modules-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 4rem;
}

.modules-header h2 {
  margin-bottom: 1rem;
}

.modules-header p {
  color: var(--text-secondary);
}

.modules-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1.5rem;
}

.module-card {
  position: relative;
  border-radius: 2px;
  overflow: hidden;
  aspect-ratio: auto;
  min-height: 280px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  transition: transform var(--duration-med) var(--ease-out-expo),
              box-shadow var(--duration-med) var(--ease-out-expo);
  cursor: default;
}

.module-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

.module-card:first-child {
  grid-row: span 2;
  min-height: 580px;
}

.module-card:nth-child(2),
.module-card:nth-child(3) {
  min-height: 270px;
}

.module-card:nth-child(4) {
  grid-column: span 2;
}

.module-card-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.08;
}

.module-card-bg svg {
  width: 60%;
  height: 60%;
}

.module-card-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(transparent, rgba(44, 42, 40, 0.04));
}

.module-card-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--caramel);
  margin-bottom: 0.3rem;
}

.module-card h3 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  margin-bottom: 0.3rem;
}

.module-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Module Icon Colors */
.module-icon-tunnel { color: var(--clay); }
.module-icon-bend { color: var(--caramel); }
.module-icon-branch { color: var(--taupe); }
.module-icon-terminal { color: var(--stone); }
.module-icon-connector { color: var(--umber); }

/* ── Configurator Section ── */
#configurator {
  background: var(--bg-dark);
  color: var(--text-light);
}

.configurator-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  flex-wrap: wrap;
  gap: 2rem;
}

.configurator-header-left h2 {
  margin-bottom: 0.8rem;
}

.configurator-header-left p {
  color: rgba(232, 221, 208, 0.7);
  max-width: 400px;
}

.configurator-controls {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.config-btn {
  padding: 0.6rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(232, 221, 208, 0.2);
  color: rgba(232, 221, 208, 0.6);
  background: transparent;
  border-radius: 2px;
  transition: all var(--duration-fast) var(--ease-smooth);
  cursor: pointer;
}

.config-btn:hover {
  border-color: rgba(232, 221, 208, 0.4);
  color: var(--cream);
}

.config-btn.active {
  border-color: var(--clay);
  color: var(--clay);
  background: rgba(196, 168, 130, 0.1);
}

.configurator-3d {
  width: 100%;
  height: 520px;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  background: rgba(44, 42, 40, 0.5);
  border: 1px solid rgba(232, 221, 208, 0.08);
}

.configurator-3d canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.configurator-hint {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8rem;
  color: rgba(232, 221, 208, 0.4);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.configurator-hint span {
  display: inline-block;
  animation: pulse-hint 2s ease-in-out infinite;
}

@keyframes pulse-hint {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.8; }
}

/* ═══════════════════════════════════════════
   Products Section
   ═══════════════════════════════════════════ */

.products-header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 4rem;
}

.products-header h2 {
  margin-bottom: 1rem;
}

.products-header p {
  color: var(--text-secondary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.product-card {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2rem;
  transition: transform var(--duration-med) var(--ease-out-expo),
              box-shadow var(--duration-med) var(--ease-out-expo);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-elevated);
}

.product-image {
  aspect-ratio: 1;
  width: 100%;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--linen) 0%, var(--clay) 100%);
  border-radius: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.product-image svg {
  width: 50%;
  height: 50%;
  opacity: 0.2;
}

.product-category {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--caramel);
  margin-bottom: 0.5rem;
}

.product-card h3 {
  margin-bottom: 0.5rem;
}

.product-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1.2rem;
  line-height: 1.6;
}

.product-price {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--charcoal);
  letter-spacing: 0.02em;
}

/* ── Testimonials Section ── */
#testimonials {
  background: var(--bg-secondary);
  overflow: hidden;
}

.testimonials-header {
  text-align: center;
  max-width: 500px;
  margin: 0 auto 3.5rem;
}

.testimonials-header h2 {
  margin-bottom: 1rem;
}

.testimonials-track {
  display: flex;
  gap: 2rem;
  transition: transform var(--duration-slow) var(--ease-out-expo);
}

.testimonial-card {
  min-width: 380px;
  flex-shrink: 0;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 2.5rem;
  position: relative;
}

.testimonial-quote {
  font-family: var(--font-display);
  font-size: 3rem;
  line-height: 1;
  color: var(--clay);
  opacity: 0.3;
  margin-bottom: 0.5rem;
}

.testimonial-text {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--linen);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--umber);
}

.testimonial-name {
  font-size: 0.85rem;
  font-weight: 400;
}

.testimonial-role {
  font-size: 0.7rem;
  color: var(--taupe);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.testimonials-nav {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-top: 2.5rem;
}

.testimonials-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--stone);
  border: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-smooth);
  padding: 0;
}

.testimonials-dot.active {
  background: var(--caramel);
  transform: scale(1.3);
}

/* ── Footer ── */
.site-footer {
  background: var(--charcoal);
  color: var(--text-light);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  color: var(--cream);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: rgba(232, 221, 208, 0.6);
  max-width: 280px;
  line-height: 1.7;
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--taupe);
  margin-bottom: 1.5rem;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: rgba(232, 221, 208, 0.6);
  margin-bottom: 0.8rem;
  transition: color var(--duration-fast) var(--ease-smooth);
}

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

.footer-bottom {
  border-top: 1px solid rgba(232, 221, 208, 0.08);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.75rem;
  color: rgba(232, 221, 208, 0.4);
}

.footer-social {
  display: flex;
  gap: 1.5rem;
}

.footer-social a {
  color: rgba(232, 221, 208, 0.4);
  transition: color var(--duration-fast) var(--ease-smooth);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-social a:hover {
  color: var(--cream);
}

/* ═══════════════════════════════════════════
   Responsive
   ═══════════════════════════════════════════ */

@media (max-width: 1024px) {
  .philosophy-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .philosophy-media {
    aspect-ratio: 16/9;
  }

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

  .module-card:first-child {
    grid-row: span 1;
    min-height: 320px;
  }

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 70vw;
    background: var(--bg-primary);
    padding: 6rem 2rem 2rem;
    gap: 1.5rem;
    border-left: 1px solid var(--border);
    box-shadow: var(--shadow-elevated);
    z-index: 99;
  }

  .nav-toggle {
    display: flex;
    z-index: 100;
  }

  .hero-title .line:nth-child(2) {
    padding-left: 0;
  }

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

  .module-card:first-child {
    min-height: 280px;
  }

  .module-card:nth-child(4) {
    grid-column: span 1;
  }

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

  .testimonial-card {
    min-width: 280px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .configurator-3d {
    height: 360px;
  }

  .philosophy-values {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .configurator-header {
    flex-direction: column;
    align-items: flex-start;
  }
}