:root {
  --color-base: #F7F5F0;
  --color-pattern-violet: #8A6FF0;
  --color-signal-red: #D96C7A;
  --color-stability-gold: #E5C66A;
  --color-text: #22252B;
  --color-text-muted: #5A5E66;
  --color-glass: rgba(255, 255, 255, 0.72);
  --color-glass-border: rgba(34, 37, 43, 0.08);
  --color-overlay: rgba(34, 37, 43, 0.45);
  --font-family-base: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-family-display: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.375rem;
  --font-size-xl: 1.75rem;
  --font-size-2xl: 2.25rem;
  --font-size-3xl: 3rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-base: 1.6;
  --line-height-loose: 1.8;
  --shadow-sm: 0 2px 8px rgba(34, 37, 43, 0.06);
  --shadow-md: 0 8px 24px rgba(34, 37, 43, 0.08);
  --shadow-lg: 0 16px 48px rgba(34, 37, 43, 0.12);
  --shadow-glow-violet: 0 8px 32px rgba(138, 111, 240, 0.2);
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-xl: 2rem;
  --radius-full: 9999px;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.6s ease;
  --header-height: 4.5rem;
  --max-width: 75rem;
}

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

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

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-base);
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(138, 111, 240, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(138, 111, 240, 0.03) 1px, transparent 1px);
  background-size: 3rem 3rem;
  pointer-events: none;
  z-index: -2;
}

img {
  width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-pattern-violet);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-family-display);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-3xl));
}

h2 {
  font-size: clamp(var(--font-size-xl), 3.5vw, var(--font-size-2xl));
}

h3 {
  font-size: var(--font-size-lg);
}

p {
  color: var(--color-text-muted);
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-glass);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-glass-border);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

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

.brand-logo {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.brand-logo:hover {
  color: var(--color-pattern-violet);
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.main-nav a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  position: relative;
  padding: var(--space-xs) 0;
}

.main-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-pattern-violet);
  transition: width var(--transition-base);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-text);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  padding: var(--space-sm);
}

.hero {
  padding: var(--space-4xl) 0 var(--space-3xl);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  opacity: 0;
  transform: translateY(2rem);
  animation: revealUp 0.8s ease forwards;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-pattern-violet);
  margin-bottom: var(--space-lg);
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-text {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-xl);
  max-width: 32rem;
}

.hero-visual {
  position: relative;
  opacity: 0;
  transform: translateY(2rem);
  animation: revealUp 0.8s ease 0.2s forwards;
}

.hero-visual figure {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-pattern-violet);
  color: #fff;
  box-shadow: var(--shadow-glow-violet);
}

.btn-primary:hover {
  background: #7560d4;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(138, 111, 240, 0.35);
}

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

.btn-secondary:hover {
  background: var(--color-glass);
  border-color: var(--color-pattern-violet);
  color: var(--color-pattern-violet);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto var(--space-3xl);
}

.section-header p {
  margin-top: var(--space-md);
  font-size: var(--font-size-md);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-pattern-violet);
  margin-bottom: var(--space-md);
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

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

.glass-card {
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.glass-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(138, 111, 240, 0.2);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.card-icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(138, 111, 240, 0.1);
  color: var(--color-pattern-violet);
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-lg);
}

.card-grid h3 {
  margin-bottom: var(--space-sm);
}

.flow-section {
  background: linear-gradient(180deg, transparent, rgba(138, 111, 240, 0.04), transparent);
}

.timeline {
  position: relative;
  max-width: 50rem;
  margin: 0 auto;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--color-pattern-violet), var(--color-stability-gold), var(--color-signal-red));
  transform: translateX(-50%);
  opacity: 0.3;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
  position: relative;
}

.timeline-item:nth-child(even) {
  flex-direction: row-reverse;
  text-align: right;
}

.timeline-dot {
  width: 1rem;
  height: 1rem;
  border-radius: var(--radius-full);
  background: var(--color-pattern-violet);
  border: 3px solid var(--color-base);
  box-shadow: var(--shadow-glow-violet);
  flex-shrink: 0;
  z-index: 1;
}

.timeline-content {
  flex: 1;
  padding: var(--space-lg);
}

.pattern-cluster {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.pattern-item {
  position: relative;
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  transition: all var(--transition-base);
}

.pattern-item.stable {
  border-color: rgba(229, 198, 106, 0.4);
}

.pattern-item.irregular {
  border-color: rgba(217, 108, 122, 0.3);
  opacity: 0.85;
}

.pattern-item:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}

.pattern-item h3 {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.pattern-indicator {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: var(--radius-full);
}

.pattern-indicator.stable {
  background: var(--color-stability-gold);
}

.pattern-indicator.irregular {
  background: var(--color-signal-red);
}

.guide-preview {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.guide-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  transition: all var(--transition-base);
}

.guide-card:hover {
  border-color: rgba(138, 111, 240, 0.3);
  box-shadow: var(--shadow-lg);
}

.guide-card h3 {
  margin-bottom: var(--space-md);
}

.guide-card p {
  flex: 1;
  margin-bottom: var(--space-xl);
}

.guide-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.observation-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.observation-list li {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-glass-border);
}

.observation-list li:last-child {
  border-bottom: none;
}

.observation-list i {
  color: var(--color-pattern-violet);
  margin-top: 0.25rem;
}

.cta-section {
  text-align: center;
  padding: var(--space-4xl) 0;
}

.cta-box {
  max-width: 36rem;
  margin: 0 auto;
  padding: var(--space-3xl);
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, rgba(138, 111, 240, 0.08), rgba(229, 198, 106, 0.08));
  border: 1px solid var(--color-glass-border);
}

.cta-box h2 {
  margin-bottom: var(--space-md);
}

.cta-box p {
  margin-bottom: var(--space-xl);
}

.page-hero {
  padding: var(--space-3xl) 0 var(--space-2xl);
  text-align: center;
}

.page-hero h1 {
  margin-bottom: var(--space-md);
}

.page-hero p {
  max-width: 36rem;
  margin: 0 auto;
  font-size: var(--font-size-md);
}

.content-section {
  padding: var(--space-2xl) 0;
}

.content-block {
  max-width: 48rem;
  margin: 0 auto;
}

.content-block h2 {
  margin-bottom: var(--space-lg);
  margin-top: var(--space-2xl);
}

.content-block h2:first-child {
  margin-top: 0;
}

.content-block p {
  margin-bottom: var(--space-md);
}

.content-block ul {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.content-block li {
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  list-style: disc;
}

.content-figure {
  margin: var(--space-xl) 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.feature-item {
  padding: var(--space-xl);
  border-radius: var(--radius-lg);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  transition: all var(--transition-base);
}

.feature-item:hover {
  box-shadow: var(--shadow-md);
}

.feature-item i {
  font-size: var(--font-size-xl);
  color: var(--color-pattern-violet);
  margin-bottom: var(--space-md);
}

.feature-item h3 {
  margin-bottom: var(--space-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-xl) 0;
}

.comparison-table th,
.comparison-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-glass-border);
}

.comparison-table th {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  background: rgba(138, 111, 240, 0.06);
}

.comparison-table tr:hover td {
  background: rgba(138, 111, 240, 0.03);
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  padding: var(--space-2xl) var(--space-sm) var(--space-4xl);
}

.contact-info {
  padding: var(--space-md);
}

.contact-info h2 {
  margin-bottom: var(--space-lg);
}

.contact-detail {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  align-items: flex-start;
}

.contact-detail i {
  color: var(--color-pattern-violet);
  font-size: var(--font-size-lg);
  margin-top: 0.2rem;
}

.contact-form-wrapper {
  padding: var(--space-2xl);
  border-radius: var(--radius-xl);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-base);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-pattern-violet);
  box-shadow: 0 0 0 3px rgba(138, 111, 240, 0.15);
}

.form-group input.error,
.form-group textarea.error {
  border-color: var(--color-signal-red);
}

.form-group textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-error {
  display: none;
  font-size: var(--font-size-xs);
  color: var(--color-signal-red);
  margin-top: var(--space-xs);
}

.form-error.visible {
  display: block;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 0.25rem;
  accent-color: var(--color-pattern-violet);
}

.checkbox-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-muted);
}

.thank-you-section {
  text-align: center;
  padding: var(--space-4xl) 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thank-you-content {
  max-width: 32rem;
}

.thank-you-icon {
  font-size: 4rem;
  color: var(--color-stability-gold);
  margin-bottom: var(--space-xl);
}

.thank-you-content h1 {
  margin-bottom: var(--space-md);
}

.thank-you-content p {
  margin-bottom: var(--space-xl);
  font-size: var(--font-size-md);
}

.policy-content {
  max-width: 48rem;
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-md) var(--space-4xl);
}

.policy-content h2 {
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-lg);
}

.policy-content h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-md);
}

.policy-content p,
.policy-content li {
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.policy-content ul {
  padding-left: var(--space-xl);
  margin-bottom: var(--space-md);
}

.policy-content li {
  list-style: disc;
}

.policy-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: var(--space-md);
  background: rgba(138, 111, 240, 0.06);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xl);
}

.site-footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: #fff;
  margin-bottom: var(--space-md);
}

.footer-disclaimer {
  font-size: var(--font-size-xs);
  line-height: var(--line-height-loose);
  margin-top: var(--space-md);
}

.footer-nav h4 {
  color: #fff;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-md);
}

.footer-nav ul li {
  margin-bottom: var(--space-sm);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: var(--font-size-sm);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-lg);
  transform: translateY(100%);
  transition: transform var(--transition-base);
  box-shadow: var(--shadow-lg);
}

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

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

.cookie-text {
  flex: 1;
  min-width: 16rem;
  font-size: var(--font-size-sm);
}

.cookie-text a {
  color: var(--color-stability-gold);
}

.cookie-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.cookie-actions .btn {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-xs);
}

.cookie-actions .btn-primary {
  background: var(--color-pattern-violet);
}

.cookie-actions .btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.cookie-actions .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.cookie-modal {
  position: fixed;
  inset: 0;
  z-index: 1001;
  background: var(--color-overlay);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.cookie-modal.visible {
  display: flex;
}

.cookie-modal-content {
  background: var(--color-base);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  max-width: 28rem;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

.cookie-modal-content h3 {
  margin-bottom: var(--space-lg);
}

.cookie-category {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-glass-border);
}

.cookie-category:last-of-type {
  border-bottom: none;
}

.cookie-category-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.cookie-category-header h4 {
  font-size: var(--font-size-sm);
}

.cookie-category p {
  font-size: var(--font-size-xs);
}

.toggle-switch {
  position: relative;
  width: 2.75rem;
  height: 1.5rem;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(34, 37, 43, 0.2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  width: 1.125rem;
  height: 1.125rem;
  left: 0.2rem;
  bottom: 0.15rem;
  background: #fff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.toggle-switch input:checked+.toggle-slider {
  background: var(--color-pattern-violet);
}

.toggle-switch input:checked+.toggle-slider::before {
  transform: translateX(1.25rem);
}

.toggle-switch input:disabled+.toggle-slider {
  opacity: 0.6;
  cursor: not-allowed;
}

.cookie-modal-actions {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-xl);
}

@keyframes revealUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  from {
    opacity: 0.4;
    transform: scale(1);
  }

  50% {
    opacity: 1;
    transform: scale(1.5);
  }

  to {
    opacity: 0.4;
    transform: scale(1);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-glass);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-glass-border);
    padding: var(--space-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition-base);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .hero-grid,
  .observation-grid,
  .contact-layout,
  .guide-preview,
  .pattern-cluster,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

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

  .timeline::before {
    left: 0.5rem;
  }

  .timeline-item,
  .timeline-item:nth-child(even) {
    flex-direction: row;
    text-align: left;
    padding-left: var(--space-xl);
  }

  .timeline-dot {
    position: absolute;
    left: 0;
  }

  .cookie-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .cookie-actions {
    justify-content: stretch;
  }

  .cookie-actions .btn {
    flex: 1;
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .contact-form-wrapper {
    padding: var(--space-md);
  }
}