:root {
  --color-base: #F3F5F7;
  --color-alignment: #5C7C99;
  --color-stability: #7FAF8A;
  --color-attention: #D9A06F;
  --color-text: #2B2F33;
  --color-text-muted: #5a6168;
  --color-white: #ffffff;
  --color-glass: rgba(255, 255, 255, 0.72);
  --color-glass-border: rgba(92, 124, 153, 0.18);
  --font-family: "Segoe UI", system-ui, -apple-system, 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: 2.75rem;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.25;
  --line-height-base: 1.6;
  --line-height-loose: 1.75;
  --shadow-sm: 0 1px 3px rgba(43, 47, 51, 0.06);
  --shadow-md: 0 4px 16px rgba(43, 47, 51, 0.08);
  --shadow-lg: 0 12px 40px rgba(43, 47, 51, 0.1);
  --shadow-glass: 0 8px 32px rgba(92, 124, 153, 0.12);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --transition-fast: 0.2s ease;
  --transition-base: 0.35s ease;
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1140px;
  --header-height: 72px;
}

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

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

body {
  font-family: var(--font-family);
  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.alignment-active {
  --scroll-align: 1;
}

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

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

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

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

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

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

h4 {
  font-size: var(--font-size-lg);
}

p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

ul,
ol {
  padding-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

li {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-glass-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.site-header.straightened {
  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-alignment);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  padding: 0;
  margin: 0;
}

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

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

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

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

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

main {
  padding-top: var(--header-height);
}

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 0 var(--spacing-lg);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  padding: var(--spacing-4xl) 0;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-alignment);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-glass);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(8px);
}

.hero h1 {
  margin-bottom: var(--spacing-lg);
  transform: rotate(calc((1 - var(--scroll-align, 0)) * -0.3deg));
  transition: transform var(--transition-slow);
}

.hero-text {
  font-size: var(--font-size-md);
  max-width: 480px;
  margin-bottom: var(--spacing-xl);
}

.hero-visual {
  position: relative;
}

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

.alignment-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: calc(0.3 + var(--scroll-align, 0) * 0.4);
  transition: opacity var(--transition-slow);
}

.alignment-line {
  position: absolute;
  background: var(--color-alignment);
  opacity: 0.4;
  transition: opacity var(--transition-base);
}

.alignment-line-h {
  height: 1px;
  left: 10%;
  right: 10%;
}

.alignment-line-v {
  width: 1px;
  top: 10%;
  bottom: 10%;
}

.alignment-line:nth-child(1) {
  top: 35%;
}

.alignment-line:nth-child(2) {
  top: 55%;
}

.alignment-line:nth-child(3) {
  left: 50%;
}

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

.btn-primary {
  background: var(--color-alignment);
  color: var(--color-white);
}

.btn-primary:hover {
  background: #4a667d;
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn-group-center {
  justify-content: center;
}

section {
  padding: var(--spacing-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--spacing-3xl);
}

.section-header p {
  margin-top: var(--spacing-md);
}

.section-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-stability);
  margin-bottom: var(--spacing-sm);
}

.glass-card {
  background: var(--color-glass);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-glass);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.glass-card h2 {
  margin-bottom: var(--spacing-md);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(92, 124, 153, 0.3);
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.zone-card {
  position: relative;
  overflow: hidden;
}

.zone-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--zone-color, var(--color-alignment));
  transition: height var(--transition-base);
}

.zone-card:hover::before {
  height: 100%;
}

.zone-card.neck {
  --zone-color: var(--color-attention);
}

.zone-card.back {
  --zone-color: var(--color-stability);
}

.zone-card.eyes {
  --zone-color: var(--color-alignment);
}

.zone-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(92, 124, 153, 0.1);
  color: var(--color-alignment);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
  transition: background var(--transition-base), color var(--transition-base);
}

.zone-card:hover .zone-icon {
  background: var(--color-alignment);
  color: var(--color-white);
}

.zone-card.neck:hover .zone-icon {
  background: var(--color-attention);
}

.zone-card.back:hover .zone-icon {
  background: var(--color-stability);
}

.zone-card h3 {
  margin-bottom: var(--spacing-sm);
}

.stability-section {
  background: linear-gradient(180deg, var(--color-base) 0%, rgba(127, 175, 138, 0.08) 100%);
}

.stability-indicator {
  margin-top: var(--spacing-lg);
  position: relative;
  min-height: 1.5rem;
}

.stability-state {
  position: absolute;
  left: 0;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-alignment);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.stability-state[data-state-idle] {
  opacity: calc(1 - var(--scroll-align, 0) * 2);
}

.stability-state[data-state-active] {
  opacity: calc(clamp(0, (var(--scroll-align, 0) - 0.2) * 3, 1) * (1 - clamp(0, (var(--scroll-align, 0) - 0.6) * 3, 1)));
  color: var(--color-stability);
}

.stability-state[data-state-stable] {
  opacity: calc(clamp(0, (var(--scroll-align, 0) - 0.6) * 3, 1));
  color: var(--color-stability);
}

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

.guide-preview.reverse {
  direction: rtl;
}

.guide-preview.reverse>* {
  direction: ltr;
}

.guide-list {
  list-style: none;
  padding: 0;
}

.guide-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-glass-border);
}

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

.guide-list i {
  color: var(--color-stability);
  margin-top: 4px;
}

.cta-section {
  text-align: center;
  background: linear-gradient(135deg, rgba(92, 124, 153, 0.08) 0%, rgba(127, 175, 138, 0.12) 100%);
  border-radius: var(--radius-xl);
  padding: var(--spacing-3xl);
  margin: var(--spacing-2xl) 0;
}

.cta-section h2 {
  margin-bottom: var(--spacing-md);
}

.disclaimer-box {
  background: rgba(217, 160, 111, 0.1);
  border-left: 3px solid var(--color-attention);
  padding: var(--spacing-lg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-xl) 0;
}

.disclaimer-box p {
  font-size: var(--font-size-sm);
  margin: 0;
}

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

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

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

.site-footer p {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
}

.footer-nav h4 {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-md);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
}

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

.footer-nav a {
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

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

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

.footer-bottom p {
  font-size: var(--font-size-xs);
  margin: 0;
}

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

.page-hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: var(--color-alignment);
  opacity: 0.5;
}

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

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

.content-block {
  max-width: 800px;
  margin: 0 auto;
}

.content-block h2 {
  margin: var(--spacing-2xl) 0 var(--spacing-md);
}

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

.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h2 {
  margin: var(--spacing-2xl) 0 var(--spacing-md);
  font-size: var(--font-size-xl);
}

.policy-content h3 {
  margin: var(--spacing-xl) 0 var(--spacing-sm);
  font-size: var(--font-size-lg);
}

.policy-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-glass-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-3xl);
}

.contact-info-item {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.contact-info-item i {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(92, 124, 153, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-alignment);
  flex-shrink: 0;
}

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

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

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

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--color-alignment);
  box-shadow: 0 0 0 3px rgba(92, 124, 153, 0.15);
}

.contact-form input.error,
.contact-form textarea.error {
  border-color: #c45c5c;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.form-error {
  font-size: var(--font-size-xs);
  color: #c45c5c;
  margin-top: var(--spacing-xs);
  display: none;
}

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

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

.checkbox-group input {
  width: auto;
  margin-top: 4px;
}

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

.thank-you-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.thank-you-content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
  padding: var(--spacing-4xl) var(--spacing-lg);
}

.thank-you-content .btn-group {
  margin-top: var(--spacing-xl);
}

.thank-you-content p {
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.thank-you-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-xl);
  background: rgba(127, 175, 138, 0.15);
  border-radius: 50%;
  font-size: var(--font-size-2xl);
  color: var(--color-stability);
}

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: var(--color-glass);
  backdrop-filter: blur(16px);
  border-top: 1px solid var(--color-glass-border);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

.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(--spacing-xl);
  flex-wrap: wrap;
}

.cookie-text {
  flex: 1;
  min-width: 280px;
}

.cookie-text p {
  font-size: var(--font-size-sm);
  margin: 0;
}

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

.cookie-actions .btn {
  padding: var(--spacing-sm) var(--spacing-lg);
}

.cookie-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(43, 47, 51, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.cookie-modal.visible {
  opacity: 1;
  visibility: visible;
}

.cookie-modal-content {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

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

.cookie-category {
  padding: var(--spacing-md) 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(--spacing-xs);
}

.cookie-category p {
  font-size: var(--font-size-sm);
  margin: 0;
}

.toggle-switch {
  position: relative;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

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

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: rgba(92, 124, 153, 0.25);
  border-radius: 24px;
  transition: background var(--transition-fast);
}

.toggle-slider::before {
  content: "";
  position: absolute;
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background: var(--color-white);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

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

.toggle-switch input:checked+.toggle-slider::before {
  transform: translateX(20px);
}

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

.modal-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-xl);
  justify-content: flex-end;
}

.align-indicator {
  position: fixed;
  right: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  opacity: calc(0.4 + var(--scroll-align, 0) * 0.6);
  transition: opacity var(--transition-slow);
}

.align-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-glass-border);
  transition: background var(--transition-base), transform var(--transition-base);
}

.align-dot.active {
  background: var(--color-stability);
  transform: scale(1.3);
}

.noise-reduced .decorative-element {
  opacity: 0.3;
}

@media (max-width: 992px) {

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

  .guide-preview.reverse {
    direction: ltr;
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.625rem;
  }

  .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(--spacing-lg);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
  }

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

  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .align-indicator {
    display: none;
  }

  .cookie-inner {
    flex-direction: column;
    text-align: center;
  }

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

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

@media (max-width: 480px) {
  .cta-section {
    padding: var(--spacing-2xl);
  }
}