/* ========================================
   CogClip - AI Recording Device
   Brand Website Stylesheet
   Color Palette: #1B191A (Dark) | #EFEDEC (Light)
   ======================================== */

/* CSS Variables */
:root {
  --color-dark: #1B191A;
  --color-light: #EFEDEC;
  --color-gray: #8A8687;
  --color-accent: #D4A574;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset & Base */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-light);
  color: var(--color-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
}

h1 {
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

p {
  font-size: 1.1rem;
  color: var(--color-gray);
}

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

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.5rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(239, 237, 236, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(27, 25, 26, 0.05);
  transition: var(--transition-smooth);
}

.nav.scrolled {
  padding: 1rem 4rem;
  background: rgba(239, 237, 236, 0.95);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-dark);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav__logo-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--color-light);
}

.nav__links {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  position: relative;
  padding: 0.5rem 0;
}

.nav__links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-dark);
  transition: var(--transition-smooth);
}

.nav__links a:hover::after,
.nav__links a.active::after {
  width: 100%;
}

.nav__cta {
  padding: 0.75rem 1.5rem;
  background: var(--color-dark);
  color: var(--color-light);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(27, 25, 26, 0.2);
}

.nav__lang {
  position: relative;
}

.nav__lang-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1.5px solid rgba(27, 25, 26, 0.15);
  border-radius: 50%;
  background: transparent;
  color: var(--color-dark);
  cursor: pointer;
  transition: all 0.3s ease;
}

.nav__lang-btn:hover {
  border-color: rgba(27, 25, 26, 0.4);
  background: rgba(27, 25, 26, 0.04);
}

.nav__lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 120px;
  background: var(--color-light);
  border: 1px solid rgba(27, 25, 26, 0.1);
  border-radius: 12px;
  padding: 6px;
  box-shadow: 0 12px 40px rgba(27, 25, 26, 0.12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.25s ease;
  z-index: 1000;
}

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

.nav__lang-option {
  display: block;
  padding: 8px 16px;
  font-size: 0.85rem;
  color: var(--color-dark);
  text-decoration: none;
  border-radius: 8px;
  transition: background 0.2s ease;
}

.nav__lang-option:hover {
  background: rgba(27, 25, 26, 0.06);
}

.nav__lang-option.active {
  background: var(--color-dark);
  color: var(--color-light);
}

/* Mobile Menu Toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: var(--transition-smooth);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 4rem 4rem;
  position: relative;
  overflow: hidden;
}

.hero__content {
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero__text {
  z-index: 2;
}

.hero__label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(27, 25, 26, 0.05);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  color: var(--color-dark);
}

.hero__title {
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-gray) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: 1.25rem;
  max-width: 500px;
  margin-bottom: 2.5rem;
  color: var(--color-gray);
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  padding: 1rem 2rem;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--color-dark);
  color: var(--color-light);
}

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(27, 25, 26, 0.25);
}

.btn--secondary {
  background: transparent;
  color: var(--color-dark);
  border: 1.5px solid var(--color-dark);
}

.btn--secondary:hover {
  background: var(--color-dark);
  color: var(--color-light);
}

.hero__visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__device {
  width: 100%;
  max-width: 500px;
  position: relative;
  z-index: 2;
}

.hero__device-mockup {
  width: 100%;
  aspect-ratio: 3/4;
  background: linear-gradient(145deg, #2a2829 0%, #1B191A 100%);
  border-radius: 40px;
  position: relative;
  box-shadow: 
    0 50px 100px rgba(27, 25, 26, 0.3),
    0 20px 40px rgba(27, 25, 26, 0.2),
    inset 0 2px 4px rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__device-screen {
  width: 90%;
  height: 85%;
  background: var(--color-light);
  border-radius: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.hero__waveform {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 80px;
}

.waveform-bar {
  width: 4px;
  background: var(--color-dark);
  border-radius: 2px;
  animation: waveform 1s ease-in-out infinite;
}

.waveform-bar:nth-child(1) { height: 20px; animation-delay: 0s; }
.waveform-bar:nth-child(2) { height: 40px; animation-delay: 0.1s; }
.waveform-bar:nth-child(3) { height: 60px; animation-delay: 0.2s; }
.waveform-bar:nth-child(4) { height: 80px; animation-delay: 0.3s; }
.waveform-bar:nth-child(5) { height: 50px; animation-delay: 0.4s; }
.waveform-bar:nth-child(6) { height: 70px; animation-delay: 0.5s; }
.waveform-bar:nth-child(7) { height: 40px; animation-delay: 0.6s; }
.waveform-bar:nth-child(8) { height: 60px; animation-delay: 0.7s; }
.waveform-bar:nth-child(9) { height: 30px; animation-delay: 0.8s; }
.waveform-bar:nth-child(10) { height: 50px; animation-delay: 0.9s; }

@keyframes waveform {
  0%, 100% { transform: scaleY(0.5); opacity: 0.7; }
  50% { transform: scaleY(1); opacity: 1; }
}

.hero__recording-status {
  position: absolute;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-dark);
}

.recording-dot {
  width: 8px;
  height: 8px;
  background: #e74c3c;
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero__ai-badge {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.75rem 1.5rem;
  background: var(--color-dark);
  color: var(--color-light);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero__floating-elements {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-element {
  position: absolute;
  padding: 1rem 1.5rem;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(27, 25, 26, 0.1);
  font-size: 0.85rem;
  font-weight: 500;
  animation: float 6s ease-in-out infinite;
}

.floating-element--1 {
  top: 10%;
  right: -20px;
  animation-delay: 0s;
}

.floating-element--2 {
  bottom: 20%;
  left: -30px;
  animation-delay: 2s;
}

.floating-element--3 {
  top: 50%;
  right: -40px;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

/* Features Section */
.features {
  padding: 8rem 4rem;
  background: var(--color-dark);
  color: var(--color-light);
}

.features__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem;
}

.features__label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(239, 237, 236, 0.1);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.features__title {
  margin-bottom: 1rem;
}

.features__subtitle {
  color: rgba(239, 237, 236, 0.6);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.feature-card {
  padding: 3rem 2rem;
  background: rgba(239, 237, 236, 0.03);
  border: 1px solid rgba(239, 237, 236, 0.1);
  border-radius: 24px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(239, 237, 236, 0.3), transparent);
}

.feature-card:hover {
  transform: translateY(-5px);
  background: rgba(239, 237, 236, 0.06);
  border-color: rgba(239, 237, 236, 0.2);
}

.feature-card__icon {
  width: 60px;
  height: 60px;
  background: rgba(239, 237, 236, 0.1);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: var(--transition-smooth);
}

.feature-card:hover .feature-card__icon {
  background: rgba(239, 237, 236, 0.15);
  transform: scale(1.05);
}

.feature-card__icon svg {
  width: 28px;
  height: 28px;
  fill: var(--color-light);
}

.feature-card__title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--color-light);
}

.feature-card__desc {
  font-size: 0.95rem;
  color: rgba(239, 237, 236, 0.6);
  line-height: 1.7;
}

/* How It Works Section */
.how-it-works {
  padding: 8rem 4rem;
  background: var(--color-light);
}

.how-it-works__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem;
}

.how-it-works__label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(27, 25, 26, 0.05);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.how-it-works__steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  position: relative;
}

.how-it-works__steps::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 12.5%;
  right: 12.5%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-dark) 0%, var(--color-dark) 100%);
  opacity: 0.1;
}

.step {
  text-align: center;
  position: relative;
  z-index: 1;
}

.step__number {
  width: 80px;
  height: 80px;
  background: var(--color-light);
  border: 2px solid var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 auto 1.5rem;
  position: relative;
  transition: var(--transition-smooth);
}

.step:hover .step__number {
  background: var(--color-dark);
  color: var(--color-light);
  transform: scale(1.1);
}

.step__title {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--color-dark);
}

.step__desc {
  font-size: 0.9rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* App Showcase Section */
.app-showcase {
  padding: 8rem 4rem;
  background: linear-gradient(180deg, var(--color-light) 0%, rgba(27, 25, 26, 0.03) 100%);
}

.app-showcase__content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.app-showcase__text {
  order: 2;
}

.app-showcase__label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(27, 25, 26, 0.05);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.app-showcase__title {
  margin-bottom: 1.5rem;
}

.app-showcase__desc {
  margin-bottom: 2rem;
  font-size: 1.1rem;
  line-height: 1.8;
}

.app-showcase__features {
  list-style: none;
  margin-bottom: 2.5rem;
}

.app-showcase__features li {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.app-showcase__features li::before {
  content: '';
  width: 20px;
  height: 20px;
  background: var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23EFEDEC' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

.app-showcase__visual {
  order: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.app-showcase__phone {
  width: 280px;
  height: 560px;
  background: var(--color-dark);
  border-radius: 40px;
  padding: 12px;
  box-shadow: 
    0 40px 80px rgba(27, 25, 26, 0.2),
    0 20px 40px rgba(27, 25, 26, 0.1);
  position: relative;
}

.app-showcase__phone-screen {
  width: 100%;
  height: 100%;
  background: var(--color-light);
  border-radius: 32px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-header {
  padding: 1.5rem;
  background: var(--color-light);
  border-bottom: 1px solid rgba(27, 25, 26, 0.05);
}

.phone-header__title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.phone-header__subtitle {
  font-size: 0.8rem;
  color: var(--color-gray);
}

.phone-content {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
}

.report-card {
  background: white;
  border-radius: 16px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 20px rgba(27, 25, 26, 0.05);
}

.report-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.report-card__title {
  font-size: 0.9rem;
  font-weight: 600;
}

.report-card__time {
  font-size: 0.75rem;
  color: var(--color-gray);
}

.report-card__summary {
  font-size: 0.85rem;
  color: var(--color-gray);
  line-height: 1.5;
}

.report-card__tags {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.report-card__tag {
  padding: 0.25rem 0.75rem;
  background: rgba(27, 25, 26, 0.05);
  border-radius: 50px;
  font-size: 0.7rem;
  font-weight: 500;
}

/* CTA Section */
.cta {
  padding: 8rem 4rem;
  background: var(--color-dark);
  color: var(--color-light);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(239, 237, 236, 0.03) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.cta__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.cta__title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 1.5rem;
}

.cta__desc {
  font-size: 1.2rem;
  color: rgba(239, 237, 236, 0.6);
  margin-bottom: 2.5rem;
}

.cta__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn--light {
  background: var(--color-light);
  color: var(--color-dark);
}

.btn--light:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(239, 237, 236, 0.2);
}

.btn--outline-light {
  background: transparent;
  color: var(--color-light);
  border: 1.5px solid var(--color-light);
}

.btn--outline-light:hover {
  background: var(--color-light);
  color: var(--color-dark);
}

/* Footer */
.footer {
  padding: 4rem;
  background: var(--color-dark);
  color: var(--color-light);
  border-top: 1px solid rgba(239, 237, 236, 0.1);
}

.footer__content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 4rem;
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer__logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer__logo-icon svg {
  width: 18px;
  height: 18px;
  fill: var(--color-dark);
}

.footer__desc {
  font-size: 0.9rem;
  color: rgba(239, 237, 236, 0.5);
  line-height: 1.7;
}

.footer__column h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.75rem;
}

.footer__links a {
  font-size: 0.9rem;
  color: rgba(239, 237, 236, 0.5);
  transition: var(--transition-smooth);
}

.footer__links a:hover {
  color: var(--color-light);
}

.footer__bottom {
  max-width: 1400px;
  margin: 3rem auto 0;
  padding-top: 2rem;
  border-top: 1px solid rgba(239, 237, 236, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__copyright {
  font-size: 0.85rem;
  color: rgba(239, 237, 236, 0.4);
}

.footer__beian {
  font-size: 0.85rem;
  color: rgba(239, 237, 236, 0.4);
}

.footer__beian a {
  color: rgba(239, 237, 236, 0.4);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer__beian a:hover {
  color: rgba(239, 237, 236, 0.7);
}

.footer__social {
  display: flex;
  gap: 1rem;
}

.footer__social a {
  width: 40px;
  height: 40px;
  background: rgba(239, 237, 236, 0.05);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-smooth);
}

.footer__social a:hover {
  background: rgba(239, 237, 236, 0.15);
  transform: translateY(-3px);
}

.footer__social svg {
  width: 18px;
  height: 18px;
  fill: var(--color-light);
}

/* Page Header */
.page-header {
  padding: 10rem 4rem 4rem;
  background: var(--color-dark);
  color: var(--color-light);
  text-align: center;
}

.page-header__label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(239, 237, 236, 0.1);
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.page-header__title {
  margin-bottom: 1rem;
}

.page-header__subtitle {
  max-width: 600px;
  margin: 0 auto;
  color: rgba(239, 237, 236, 0.6);
}

/* Product Page Specific Styles */
.product-hero {
  padding: 8rem 4rem;
  background: var(--color-light);
}

.product-hero__content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.product-hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-hero__image {
  width: 100%;
  max-width: 728px;
  height: auto;
  display: block;
  object-fit: contain;
}

.scene-showcase {
  padding: 4rem 4rem 2rem;
  background: var(--color-light);
}

.scene-slider__wrapper {
  position: relative;
  max-width: 1400px;
  margin: 3rem auto 0;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.scene-slider__track {
  display: flex;
  gap: 2rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding: 1rem 0;
}

.scene-slider__track::-webkit-scrollbar {
  display: none;
}

.scene-slider__item {
  flex: 0 0 calc((100% - 4rem) / 3);
  min-width: 280px;
  scroll-snap-align: start;
  text-align: center;
}

.scene-slider__image {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: 16px;
  display: block;
  box-shadow: 0 8px 40px rgba(27, 25, 26, 0.08);
  transition: transform 0.3s ease;
}

.scene-slider__item:hover .scene-slider__image {
  transform: scale(1.02);
}

.scene-slider__caption {
  margin-top: 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-dark);
}

.scene-slider__arrow {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 1.5px solid rgba(27, 25, 26, 0.15);
  border-radius: 50%;
  background: var(--color-light);
  color: var(--color-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
}

.scene-slider__arrow:hover {
  border-color: rgba(27, 25, 26, 0.4);
  background: var(--color-dark);
  color: var(--color-light);
}

.product-device {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  background: linear-gradient(145deg, #2a2829 0%, #1B191A 100%);
  border-radius: 50%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow: 
    0 60px 120px rgba(27, 25, 26, 0.3),
    0 30px 60px rgba(27, 25, 26, 0.2);
}

.product-device__inner {
  width: 70%;
  height: 70%;
  background: var(--color-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-device__icon {
  width: 60%;
  height: 60%;
  background: var(--color-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-device__icon svg {
  width: 50%;
  height: 50%;
  fill: var(--color-light);
}

.product-specs {
  padding: 6rem 4rem;
  background: var(--color-light);
}

.product-specs__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  max-width: 1000px;
  margin: 0 auto;
}

.spec-card {
  padding: 2.5rem;
  background: white;
  border-radius: 24px;
  box-shadow: 0 4px 30px rgba(27, 25, 26, 0.05);
}

.spec-card__label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: 0.5rem;
}

.spec-card__value {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-dark);
}

/* Download Page */
.download-options {
  padding: 6rem 4rem;
  background: var(--color-light);
}

.download-options__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
  max-width: 900px;
  margin: 0 auto;
}

.download-card {
  padding: 4rem 3rem;
  background: white;
  border-radius: 32px;
  text-align: center;
  box-shadow: 0 4px 40px rgba(27, 25, 26, 0.05);
  transition: var(--transition-smooth);
}

.download-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(27, 25, 26, 0.1);
}

.download-card__icon {
  width: 80px;
  height: 80px;
  background: var(--color-dark);
  border-radius: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.download-card__icon svg {
  width: 40px;
  height: 40px;
  fill: var(--color-light);
}

.download-card__title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.download-card__desc {
  font-size: 0.95rem;
  color: var(--color-gray);
  margin-bottom: 2rem;
}

.qr-code {
  width: 150px;
  height: 150px;
  background: var(--color-dark);
  border-radius: 16px;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.qr-code::before {
  content: '';
  width: 80%;
  height: 80%;
  background-image: 
    repeating-linear-gradient(0deg, var(--color-light) 0px, var(--color-light) 4px, transparent 4px, transparent 8px),
    repeating-linear-gradient(90deg, var(--color-light) 0px, var(--color-light) 4px, transparent 4px, transparent 8px);
  border-radius: 4px;
}

.qr-code-img {
  width: 150px;
  height: 150px;
  margin: 0 auto 1.5rem;
  display: block;
  border-radius: 16px;
  object-fit: cover;
  background: #fff;
  border: 2px solid rgba(27, 25, 26, 0.05);
  padding: 8px;
}

/* About Page */
.about-story {
  padding: 6rem 4rem;
  background: var(--color-light);
}

.about-story__content {
  max-width: 1000px;
  margin: 0 auto;
}

.about-story__text {
  font-size: 1.5rem;
  line-height: 1.8;
  color: var(--color-dark);
  margin-bottom: 3rem;
}

.about-story__text p {
  color: var(--color-dark);
  margin-bottom: 1.5rem;
}

.about-values {
  padding: 6rem 4rem;
  background: var(--color-dark);
  color: var(--color-light);
}

.about-values__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  max-width: 1200px;
  margin: 0 auto;
}

.value-card {
  text-align: center;
  padding: 2rem;
}

.value-card__icon {
  width: 80px;
  height: 80px;
  background: rgba(239, 237, 236, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.value-card__icon svg {
  width: 36px;
  height: 36px;
  fill: var(--color-light);
}

.value-card__title {
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.value-card__desc {
  font-size: 0.95rem;
  color: rgba(239, 237, 236, 0.6);
  line-height: 1.7;
}

/* Contact Page */
.contact-section {
  padding: 6rem 4rem;
  background: var(--color-light);
}

.contact-section__content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
}

.contact-info__item {
  margin-bottom: 2.5rem;
}

.contact-info__label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray);
  margin-bottom: 0.5rem;
}

.contact-info__value {
  font-size: 1.25rem;
  color: var(--color-dark);
}

.contact-form {
  background: white;
  padding: 3rem;
  border-radius: 32px;
  box-shadow: 0 4px 40px rgba(27, 25, 26, 0.05);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 1.5px solid rgba(27, 25, 26, 0.1);
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  transition: var(--transition-smooth);
  background: var(--color-light);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-dark);
  background: white;
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* Animations */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .nav {
    padding: 1rem 2rem;
  }
  
  .nav__links {
    gap: 2rem;
  }
  
  .hero {
    padding: 7rem 2rem 4rem;
  }
  
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__text {
    order: 2;
  }
  
  .hero__visual {
    order: 1;
  }
  
  .hero__subtitle {
    margin: 0 auto 2rem;
  }
  
  .hero__buttons {
    justify-content: center;
  }
  
  .features__grid,
  .how-it-works__steps,
  .about-values__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .how-it-works__steps::before {
    display: none;
  }
  
  .app-showcase__content,
  .product-hero__content,
  .contact-section__content {
    grid-template-columns: 1fr;
    gap: 4rem;
  }

  .product-hero__visual {
    order: -1;
  }

  .product-hero__image {
    max-width: 100%;
  }
  
  .app-showcase__text {
    order: 1;
  }
  
  .app-showcase__visual {
    order: 2;
  }
  
  .footer__content {
    grid-template-columns: repeat(2, 1fr);
  }

  .scene-slider__item {
    flex: 0 0 calc((100% - 2rem) / 2);
    min-width: 260px;
  }

  .scene-showcase {
    padding: 3rem 2rem 1.5rem;
  }
}

@media (max-width: 768px) {
  .nav__links,
  .nav__cta,
  .nav__lang {
    display: none;
  }
  
  .nav.mobile-open .nav__lang {
    display: block;
    position: relative;
  }

  .nav.mobile-open .nav__lang-btn {
    display: flex;
  }

  .nav.mobile-open .nav__lang-dropdown {
    position: absolute;
    right: 0;
  }

  .nav.mobile-open .nav__cta {
    display: inline-block;
    margin-top: 0.5rem;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .nav.mobile-open .nav__links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-light);
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid rgba(27, 25, 26, 0.1);
  }
  
  .features__grid,
  .how-it-works__steps,
  .about-values__grid,
  .product-specs__grid,
  .download-options__grid {
    grid-template-columns: 1fr;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: 1.5rem;
    text-align: center;
  }

  .scene-showcase {
    padding: 2.5rem 1.5rem 1rem;
  }

  .scene-slider__wrapper {
    gap: 0.5rem;
    margin-top: 2rem;
  }

  .scene-slider__item {
    flex: 0 0 85%;
    min-width: 260px;
  }

  .scene-slider__arrow {
    width: 40px;
    height: 40px;
  }
  
  .hero,
  .features,
  .how-it-works,
  .app-showcase,
  .cta,
  .page-header,
  .product-hero,
  .product-specs,
  .download-options,
  .about-story,
  .about-values,
  .contact-section {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

/* Print Styles */
@media print {
  .nav,
  .footer,
  .cta__buttons {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}