:root {
  --color-hero: #B5D4F1;
  --color-hero-light: #D0E4F7;
  --color-hero-dark: #A0C4E8;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F0F5FA;
  --color-primary: #003873;
  --color-primary-light: #1A5BA0;
  --color-accent: #2B7DE9;
  --color-text: #1A1A2E;
  --color-text-secondary: #6B7280;
  --color-text-light: #9CA3AF;
  --color-border: #E5E7EB;
  --color-white: #FFFFFF;

  --font-display: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1200px;
  --section-padding: 80px 24px;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ===== HEADER ===== */

.header {
  position: fixed;
  top: env(safe-area-inset-top, 0px);
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
}

.header-logo img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.header-logo span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}

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

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle span + span {
  margin-top: 6px;
}

/* ===== HERO ===== */

.hero {
  padding: 140px 24px 80px;
  background: linear-gradient(160deg, var(--color-hero-light) 0%, var(--color-hero) 40%, var(--color-hero-dark) 100%);
  text-align: center;
  overflow: hidden;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  color: var(--color-white);
  background: var(--color-primary);
  padding: 2px 14px;
  border-radius: 8px;
  display: inline-block;
}

.hero p {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-primary);
  opacity: 0.8;
  max-width: 560px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 48px;
  transition: transform var(--transition), opacity var(--transition);
}

.hero-badge:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.hero-badge img {
  height: 54px;
  width: auto;
}

.hero-screenshots {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding: 0 24px 16px;
  -webkit-overflow-scrolling: touch;
}

.hero-screenshots img {
  width: 180px;
  flex-shrink: 0;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 56, 115, 0.12);
  box-shadow: 0 8px 32px rgba(0, 56, 115, 0.15);
  transition: transform var(--transition);
}

.hero-screenshots img:hover {
  transform: translateY(-6px);
}

/* ===== FEATURES ===== */

.features {
  padding: 0;
}

.feature {
  padding: var(--section-padding);
}

.feature:nth-child(even) {
  background: var(--color-bg-alt);
}

.feature-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature:nth-child(even) .feature-inner {
  direction: rtl;
}

.feature:nth-child(even) .feature-content {
  direction: ltr;
}

.feature:nth-child(even) .feature-image {
  direction: ltr;
}

.feature-content {
  max-width: 480px;
}

.feature-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: rgba(43, 125, 233, 0.1);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.feature-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.feature-content p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.feature-image {
  display: flex;
  justify-content: center;
}

.feature-image img {
  max-width: 320px;
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(0, 56, 115, 0.1);
  box-shadow: 0 12px 40px rgba(0, 56, 115, 0.12);
}

/* ===== PRIVACY SECTION ===== */

.privacy-section {
  padding: var(--section-padding);
  background: linear-gradient(160deg, var(--color-hero-light) 0%, var(--color-hero) 100%);
  text-align: center;
}

.privacy-section .section-inner {
  max-width: 680px;
  margin: 0 auto;
}

.privacy-icon {
  width: 64px;
  height: 64px;
  background: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: 0 4px 16px rgba(0, 56, 115, 0.1);
}

.privacy-icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.privacy-section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.privacy-section p {
  font-size: 1.05rem;
  color: var(--color-primary);
  opacity: 0.75;
  line-height: 1.7;
}

.privacy-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}

.privacy-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}

.privacy-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.privacy-card p {
  font-size: 0.9rem;
  opacity: 0.7;
}

/* ===== CTA ===== */

.cta {
  padding: var(--section-padding);
  text-align: center;
  background: var(--color-bg);
}

.cta-inner {
  max-width: 600px;
  margin: 0 auto;
}

.cta h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.cta .hero-badge img {
  height: 54px;
}

/* ===== FOOTER ===== */

.footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 48px 24px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}

.footer-brand span {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
}

.footer-links {
  display: flex;
  gap: 28px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-top: 24px;
  margin-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.8rem;
}

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

/* ===== LEGAL PAGES (Terms, Privacy, Contacts) ===== */

.legal-page {
  padding: calc(120px + env(safe-area-inset-top, 0px)) 24px 80px;
  min-height: 100vh;
}

.legal-page .page-inner {
  max-width: 780px;
  margin: 0 auto;
}

.legal-page h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.legal-page .last-updated {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.legal-content h2 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 40px;
  margin-bottom: 12px;
}

.legal-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-top: 28px;
  margin-bottom: 10px;
}

.legal-content p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-content ul {
  margin: 12px 0 16px 24px;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
}

.legal-content li {
  margin-bottom: 6px;
}

.legal-content a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ===== CONTACTS PAGE ===== */

.contacts-section {
  padding: calc(120px + env(safe-area-inset-top, 0px)) 24px 80px;
  min-height: 80vh;
  display: flex;
  align-items: center;
}

.contacts-inner {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.contacts-inner h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.contacts-inner > p {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 56, 115, 0.08);
}

.contact-card svg {
  width: 32px;
  height: 32px;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.contact-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.contact-card a,
.contact-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* ===== SCROLL REVEAL ===== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* ===== RESPONSIVE ===== */

@media (max-width: 768px) {
  :root {
    --section-padding: 56px 20px;
  }

  .nav {
    position: fixed;
    top: calc(64px + env(safe-area-inset-top, 0px));
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(calc(-100% - 64px));
    visibility: hidden;
    transition: transform var(--transition), visibility var(--transition);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  }

  .nav.open {
    transform: translateY(0);
    visibility: visible;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding: calc(110px + env(safe-area-inset-top, 0px)) 20px 48px;
  }

  .hero-screenshots {
    gap: 12px;
    padding: 0 12px 12px;
  }

  .hero-screenshots img {
    width: 140px;
  }

  .feature-inner {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .feature:nth-child(even) .feature-inner {
    direction: ltr;
  }

  .feature-content {
    max-width: 100%;
  }

  .feature-image img {
    max-width: 260px;
  }

  .privacy-features {
    grid-template-columns: 1fr;
  }

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

  .footer-links {
    flex-direction: column;
    gap: 16px;
  }

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

  .contact-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-screenshots img {
    width: 120px;
  }

  .hero-badge img {
    height: 44px;
  }
}