:root {
  --primary-main: #ff7043;
  --primary-light: #ffab91;
  --primary-dark: #e64a19;
  --primary-container: #ffe0b2;
  --primary-on-container: #5d4037;

  --secondary-main: #7c4dff;
  --secondary-light: #b388ff;
  --secondary-dark: #651fff;
  --secondary-container: #ede7f6;
  --secondary-on-container: #311b92;

  --tertiary-main: #26a69a;
  --tertiary-light: #80cbc4;
  --tertiary-dark: #00897b;
  --tertiary-container: #e0f2f1;
  --tertiary-on-container: #004d40;

  --neutral-0: #000000;
  --neutral-10: #1c1b1f;
  --neutral-20: #313033;
  --neutral-30: #484649;
  --neutral-40: #605d62;
  --neutral-50: #787579;
  --neutral-60: #938f96;
  --neutral-70: #aeaaae;
  --neutral-80: #cac5cd;
  --neutral-90: #e6e1e5;
  --neutral-95: #f4eff4;
  --neutral-99: #fffbfe;
  --neutral-100: #ffffff;

  --surface-default: #fffbfe;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f0f7;
  --surface-container: #f1ecf4;
  --surface-container-high: #ebe6ed;

  --error-main: #ba1a1a;
  --error-container: #ffdad6;
  --success-main: #2e7d32;
  --success-container: #c8e6c9;
  --warning-main: #ed6c02;
  --warning-container: #fff3e0;

  --font-family-base: -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Segoe UI', Roboto, sans-serif;
  --font-family-bold: -apple-system, BlinkMacSystemFont, 'Hiragino Sans',
    'Segoe UI', Roboto, sans-serif;

  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-base: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05), 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  font-size: 16px;
  line-height: 1.5;
  color: var(--neutral-20);
  background-color: var(--surface-default);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-base) var(--spacing-lg);
  font-family: var(--font-family-bold);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn--primary {
  background-color: var(--primary-main);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: var(--secondary-main);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn--secondary:hover {
  background-color: var(--secondary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--outline {
  background-color: transparent;
  color: var(--primary-main);
  border: 2px solid var(--primary-main);
}

.btn--outline:hover {
  background-color: var(--primary-main);
  color: white;
}

.btn--lg {
  padding: var(--spacing-base) var(--spacing-xl);
  font-size: 16px;
}

.card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(
    135deg,
    var(--primary-main) 0%,
    var(--secondary-main) 100%
  );
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  top: -100px;
  right: -50px;
}

.hero::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  bottom: 100px;
  left: -50px;
}

.hero__content {
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(255, 255, 255, 0.2);
  padding: var(--spacing-xs) var(--spacing-base);
  border-radius: var(--radius-full);
  color: white;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-base);
}

.hero__title {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  color: white;
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-base);
}

.hero__subtitle {
  font-size: clamp(18px, 3vw, 22px);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  line-height: 1.6;
}

.hero__image {
  text-align: center;
}

.hero__image img {
  max-width: 320px;
  width: 100%;
  height: auto;
}

.hero__app-icon {
  width: 120px;
  height: 120px;
  margin-bottom: var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--neutral-10);
  margin-bottom: var(--spacing-base);
  letter-spacing: -0.5px;
}

.section__subtitle {
  font-size: 16px;
  color: var(--neutral-50);
  max-width: 600px;
  margin: 0 auto;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.feature__card {
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--surface-container-lowest);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.feature__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature__icon {
  width: 64px;
  height: 64px;
  background: var(--primary-container);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-base);
  font-size: 32px;
}

.feature__title {
  font-size: 18px;
  font-weight: 600;
  color: var(--neutral-10);
  margin-bottom: var(--spacing-sm);
}

.feature__description {
  font-size: 14px;
  color: var(--neutral-50);
  line-height: 1.6;
}

.examples {
  background: var(--surface-container-low);
}

.examples__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-base);
}

.example__card {
  background: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-base);
}

.example__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}

.example__content {
  flex: 1;
}

.example__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--neutral-20);
  margin-bottom: var(--spacing-xs);
}

.example__text {
  font-size: 13px;
  color: var(--neutral-50);
  line-height: 1.6;
}

.cta {
  text-align: center;
  background: var(--surface-container-low);
  padding: var(--spacing-3xl) 0;
}

.cta__title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--neutral-10);
  margin-bottom: var(--spacing-base);
}

.cta__description {
  font-size: 16px;
  color: var(--neutral-50);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.footer {
  background: var(--neutral-10);
  color: var(--neutral-90);
  padding: var(--spacing-2xl) 0;
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer__link {
  color: var(--neutral-90);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer__link:hover {
  color: var(--primary-light);
}

.footer__contact {
  font-size: 14px;
  color: var(--neutral-60);
}

.footer__copyright {
  font-size: 12px;
  color: var(--neutral-60);
  margin-top: var(--spacing-lg);
}

.lang-switch {
  display: flex;
  gap: var(--spacing-sm);
}

.lang-switch a {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--neutral-60);
  text-decoration: none;
  transition: all 0.2s ease;
}

.lang-switch a:hover,
.lang-switch a.active {
  background: var(--primary-container);
  color: var(--primary-on-container);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-base) 0;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 10;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: white;
  text-decoration: none;
}

.nav__logo img {
  width: 40px;
  height: 40px;
}

.nav__logo span {
  font-weight: 700;
  font-size: 18px;
}

.placeholder-page {
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl) 0;
}

.placeholder-page__icon {
  font-size: 64px;
  margin-bottom: var(--spacing-lg);
}

.placeholder-page__title {
  font-size: 28px;
  font-weight: 700;
  color: var(--neutral-10);
  margin-bottom: var(--spacing-base);
}

.placeholder-page__description {
  font-size: 16px;
  color: var(--neutral-50);
  max-width: 500px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .hero__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
  }

  .hero__text {
    flex: 1;
  }

  .hero__image {
    flex: 0 0 auto;
  }

  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (max-width: 767px) {
  .container {
    padding: 0 var(--spacing-base);
  }

  .hero__badge {
    font-size: 10px;
    padding: 4px 12px;
  }

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