:root {
  --black: #000000;
  --white: #ffffff;
  --off-white: #f7f7f7;
  --dark-bg: #121212;
  --darker-bg: #0a0a0a;
  --gray-dark: #292929;
  --gray: #636363;
  --gray-light: #e0e0e0;
  --ledger-primary: var(--black);
  --ledger-primary-hover: #303635;
  --ledger-primary-light: rgba(65, 204, 180, 0.1);
  --ledger-secondary: #222222;
  --ledger-accent: #7047EB;
  --ledger-accent-hover: #5f3cd6;
  --ledger-border: #E0E0E0;
  --success: var(--dark-bg);
  --error: #F14251;
  --container-width: 1280px;
  --text-shadow: 0px 1px 2px rgba(0, 0, 0, 0.05);
  --box-shadow-sm: 0 4px 8px rgba(0, 0, 0, 0.04), 0 1px 4px rgba(0, 0, 0, 0.08);
  --box-shadow-md: 0 8px 16px rgba(0, 0, 0, 0.06), 0 4px 8px rgba(0, 0, 0, 0.04);
  --box-shadow-lg: 0 15px 30px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.06);
  --transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--black);
  background-color: var(--white);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 30px;
}

.btn-primary {
  display: inline-block;
  background-color: var(--ledger-primary);
  color: var(--white);
  padding: 16px 28px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--box-shadow-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

.button-block {
  display: block;
  width: 100%;
}

/* Header */
.site-header {
  padding: 20px 0;
  background-color: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--box-shadow-sm);
  border-bottom: 1px solid var(--gray-light);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 28px;
  transition: var(--transition);
}

.logo img:hover {
  opacity: 0.9;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  font-weight: 500;
  font-size: 16px;
  color: var(--black);
  position: relative;
}

.nav-links a:after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -5px;
  left: 0;
  background-color: var(--orange);
  transition: var(--transition);
}

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

.nav-links a:hover:after {
  width: 100%;
}

.nav-buttons {
  display: flex;
  gap: 20px;
  align-items: center;
}

.nav-button {
  font-weight: 500;
  font-size: 16px;
  transition: var(--transition);
}

.nav-button:hover {
  color: var(--orange);
}

/* Hero Section */
.hero {
  padding: 100px 0 70px;
  background: linear-gradient(135deg, var(--white) 0%, var(--off-white) 100%);
  overflow: hidden;
  position: relative;
}

.hero:before {
  content: "";
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  top: -400px;
  right: -200px;
  z-index: 0;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 550px;
}

.hero h1 {
  font-size: 60px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--black);
  line-height: 1.1;
  letter-spacing: -0.5px;
}

.hero .subtitle {
  font-size: 26px;
  margin-bottom: 40px;
  color: var(--gray);
  font-weight: 300;
}

.hero-image {
  position: relative;
  z-index: 2;
  transform: translateY(-30px);
  transition: var(--transition);
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% {
    transform: translateY(-30px);
  }
  50% {
    transform: translateY(-50px);
  }
  100% {
    transform: translateY(-30px);
  }
}

.hero-image img {
  max-width: 100%;
  height: auto;
  max-height: 600px;
  filter: drop-shadow(0 30px 30px rgba(0, 0, 0, 0.15));
}

/* Features Section */
.features {
  padding: 100px 0;
  background-color: var(--white);
  position: relative;
}

.features:before {
  content: "";
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  bottom: -300px;
  left: -200px;
  z-index: 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
  position: relative;
  z-index: 1;
}

.feature-item {
  padding: 40px;
  border-radius: 20px;
  background-color: var(--white);
  transition: var(--transition);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid var(--gray-light);
  position: relative;
  overflow: hidden;
}

.feature-item:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  top: 0;
  left: 0;
  transition: var(--transition);
  transform: scaleX(0);
  transform-origin: left;
}

.feature-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-md);
}

.feature-item:hover:before {
  transform: scaleX(1);
}

.feature-icon {
  margin-bottom: 25px;
  position: relative;
}

.feature-icon:after {
  content: "";
  position: absolute;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: var(--orange-light);
  top: -15px;
  left: -15px;
  z-index: -1;
}

.feature-icon img {
  width: 48px;
  height: 48px;
  transition: var(--transition);
}

.feature-item:hover .feature-icon img {
  transform: scale(1.1);
}

.feature-item h3 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--black);
}

.feature-item p {
  color: var(--gray);
  font-size: 16px;
  line-height: 1.7;
}

/* Device Showcase */
.device-showcase {
  padding: 120px 0 80px;
  background: linear-gradient(to bottom, var(--white) 0%, var(--off-white) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.device-showcase:before {
  content: "";
  position: absolute;
  width: 2000px;
  height: 2000px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  top: -1000px;
  left: calc(50% - 1000px);
  z-index: 0;
}

.device-showcase .container {
  max-width: 1000px;
  padding: 0 20px;
}

.discount-banner {
  background: linear-gradient(135deg, var(--ledger-primary) 0%, var(--ledger-primary-hover) 100%);
  border-radius: 15px;
  padding: 25px;
  margin-bottom: 50px;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  box-shadow: var(--box-shadow-lg), 0 10px 20px rgba(65, 204, 180, 0.2);
  position: relative;
  z-index: 2;
  overflow: hidden;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.discount-banner:before {
  content: "";
  position: absolute;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" stroke="rgba(255,255,255,0.1)" stroke-width="1" fill="none" /></svg>') repeat;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  opacity: 0.2;
  animation: rotate 40s linear infinite;
}

@keyframes rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.discount-badge {
  background-color: white;
  border-radius: 50%;
  width: 90px;
  height: 90px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  margin-right: 25px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  flex-shrink: 0;
  animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.discount-badge .discount-text {
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  color: var(--ledger-primary);
}

.discount-badge span:last-child {
  font-size: 16px;
  font-weight: 700;
  color: var(--gray-dark);
  text-transform: uppercase;
  line-height: 1;
}

.discount-info {
  text-align: left;
}

.discount-info h3 {
  color: white;
  font-size: 24px;
  margin-bottom: 5px;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.discount-info p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  margin: 0;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.showcase-video {
  max-width: 600px;
  max-height: 350px;
  margin: 0 auto 40px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--box-shadow-lg);
  position: relative;
  z-index: 1;
}

.showcase-video-element {
  width: 100%;
  height: 100%;
  display: block;
  transition: var(--transition);
  object-fit: cover;
}

.showcase-image {
  max-width: 60%;
  max-height: 400px;
  margin-bottom: 40px;
  border-radius: 30px;
  box-shadow: var(--box-shadow-lg);
  transition: var(--transition);
  position: relative;
  z-index: 1;
  object-fit: contain;
}

.showcase-image:hover {
  transform: scale(1.02);
}

.device-info {
  margin-top: 40px;
  position: relative;
  z-index: 1;
}

.price-comparison {
  margin-bottom: 30px;
  background-color: var(--white);
  border-radius: 15px;
  padding: 20px 30px;
  box-shadow: var(--box-shadow-md);
  display: inline-block;
  position: relative;
  transition: var(--transition);
}

.price-comparison:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow-lg);
}

.price-comparison:after {
  content: "";
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 10px;
  background-color: rgba(0, 0, 0, 0.03);
  filter: blur(4px);
  border-radius: 50%;
  z-index: -1;
}

.regular-price {
  font-size: 18px;
  color: var(--gray);
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
  background-color: var(--gray-light);
  padding: 5px 15px;
  border-radius: 20px;
}

.old-price {
  text-decoration: line-through;
  color: var(--gray-dark);
  position: relative;
  font-weight: 600;
}

.old-price:after {
  content: "";
  position: absolute;
  width: 110%;
  height: 2px;
  background-color: var(--error);
  left: -5%;
  top: 50%;
}

.your-price {
  font-size: 22px;
  font-weight: 600;
  color: var(--black);
  margin-bottom: 10px;
}

.exclusive-offer {
  font-size: 14px;
  color: white;
  background-color: var(--ledger-primary);
  padding: 5px 12px;
  border-radius: 20px;
  display: inline-block;
  margin-top: 5px;
  box-shadow: 0 3px 6px rgba(65, 204, 180, 0.2);
  animation: pulse-small 2s ease-in-out infinite;
}

.new-price {
  color: var(--success);
  font-weight: 700;
  font-size: 36px;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  display: inline-block;
  position: relative;
  padding: 0 10px;
  background-color: rgba(14, 212, 168, 0.1);
  border-radius: 8px;
}

.new-price:after {
  content: "FREE";
  position: absolute;
  top: -15px;
  right: -20px;
  background-color: var(--success);
  color: white;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 10px;
  transform: rotate(15deg);
  font-weight: 700;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  animation: bounce-small 2s infinite;
}

@keyframes bounce-small {
  0%, 20%, 50%, 80%, 100% {transform: rotate(15deg);}
  40% {transform: rotate(15deg) translateY(-5px);}
  60% {transform: rotate(15deg) translateY(-2px);}
}

.currency-options {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 20px;
}

.currency-options span {
  font-size: 20px;
  font-weight: 500;
  color: var(--gray);
  cursor: pointer;
  transition: var(--transition);
  padding: 5px 15px;
  border-radius: 20px;
}

.currency-options span:hover {
  color: var(--black);
}

.currency-options span.active {
  color: var(--orange);
  font-weight: 700;
  background-color: var(--orange-light);
}

/* Features Detailed */
.features-detailed {
  padding: 120px 0;
  background-color: var(--white);
}

.specs-title {
  text-align: center;
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 60px;
  color: var(--black);
  position: relative;
  padding-bottom: 20px;
}

.specs-title:after {
  content: "";
  position: absolute;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  bottom: 0;
  left: calc(50% - 40px);
}

.feature-detailed-item {
  display: flex;
  align-items: center;
  margin-bottom: 100px;
  gap: 60px;
  background-color: var(--white);
  border-radius: 30px;
  box-shadow: var(--box-shadow-sm);
  padding: 40px;
  transition: var(--transition);
  border: 1px solid var(--gray-light);
}

.feature-detailed-item:hover {
  transform: translateY(-10px);
  box-shadow: var(--box-shadow-lg);
}

.feature-detailed-item:last-child {
  margin-bottom: 0;
}

.feature-detailed-item.reverse {
  flex-direction: row-reverse;
}

.feature-image {
  width: 48%;
  border-radius: 20px;
  box-shadow: var(--box-shadow-lg);
  transition: var(--transition);
  overflow: hidden;
}

.feature-video {
  width: 48%;
  border-radius: 20px;
  box-shadow: var(--box-shadow-lg);
  overflow: hidden;
  transition: var(--transition);
}

.feature-video video {
  width: 100%;
  display: block;
  transition: var(--transition);
}

.feature-detailed-item:hover .feature-image,
.feature-detailed-item:hover .feature-video {
  transform: scale(1.02);
  box-shadow: var(--box-shadow-lg), 0 20px 40px rgba(255, 83, 0, 0.1);
}

.feature-content {
  width: 48%;
}

.feature-content h3 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 25px;
  color: var(--black);
  line-height: 1.2;
  position: relative;
  padding-bottom: 15px;
}

.feature-content h3:after {
  content: "";
  position: absolute;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  bottom: 0;
  left: 0;
}

.feature-detailed-item.reverse .feature-content h3:after {
  left: auto;
  right: 0;
}

.spec-list {
  list-style: none;
  margin-bottom: 25px;
}

.spec-list li {
  margin-bottom: 12px;
  padding-left: 25px;
  position: relative;
  font-size: 16px;
  color: var(--gray);
  line-height: 1.6;
}

.spec-list li:before {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--orange);
  left: 0;
  top: 8px;
}

.spec-title {
  font-weight: 700;
  color: var(--black);
  margin-right: 5px;
}

.feature-content p {
  font-size: 18px;
  color: var(--gray);
  line-height: 1.8;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--gray-light);
}

/* Security Keys */
.security-keys {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--off-white) 0%, var(--white) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.security-keys:before {
  content: "";
  position: absolute;
  width: 1000px;
  height: 1000px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  bottom: -500px;
  right: -300px;
  z-index: 0;
}

.security-keys h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--black);
  position: relative;
  z-index: 1;
}

.security-keys p {
  font-size: 20px;
  color: var(--gray);
  margin-bottom: 40px;
  position: relative;
  z-index: 1;
}

.model-colors {
  display: flex;
  justify-content: center;
  gap: 25px;
  position: relative;
  z-index: 1;
}

.color-option {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
}

.color-option:hover {
  transform: scale(1.1);
}

.color-option.black {
  background-color: var(--black);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.color-option.white {
  background-color: var(--white);
  border: 1px solid var(--gray-light);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.color-option.steel {
  background: linear-gradient(135deg, #b8b8b8 0%, #d8d8d8 100%);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.color-option.active:after {
  content: '';
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  border: 2px solid var(--orange);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  70% {
    transform: scale(1.1);
    opacity: 0;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}

/* Ecosystem */
.ecosystem {
  padding: 120px 0;
  background: linear-gradient(to bottom, var(--dark-bg) 0%, var(--darker-bg) 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.ecosystem:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="none"/><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.05)"/></svg>') repeat;
  top: 0;
  left: 0;
  opacity: 0.3;
}

.ecosystem-content h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 60px;
  text-align: center;
  background: linear-gradient(90deg, var(--white) 0%, rgba(255, 255, 255, 0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
}

.ecosystem-content h2:after {
  content: "";
  position: absolute;
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  bottom: -20px;
  left: calc(50% - 50px);
}

.ecosystem-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 40px;
}

.eco-feature {
  text-align: center;
  background-color: rgba(255, 255, 255, 0.05);
  padding: 40px 30px;
  border-radius: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.eco-feature:before {
  content: "";
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 83, 0, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
  top: -50%;
  left: -50%;
  transition: var(--transition);
  opacity: 0;
}

.eco-feature:hover {
  transform: translateY(-10px);
}

.eco-feature:hover:before {
  opacity: 1;
}

.eco-image {
  width: 80%;
  border-radius: 15px;
  margin-bottom: 30px;
  box-shadow: 0 15px 25px rgba(0, 0, 0, 0.3);
  transition: var(--transition);
}

.eco-feature:hover .eco-image {
  transform: scale(1.05);
}

.eco-feature h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--white);
}

.eco-feature p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  line-height: 1.7;
}

/* Verification Section */
.verification {
  padding: 120px 0;
  background: linear-gradient(135deg, var(--white) 0%, var(--off-white) 100%);
  position: relative;
  overflow: hidden;
}

.verification:before {
  content: "";
  position: absolute;
  width: 1000px;
  height: 1000px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  top: -500px;
  left: -300px;
  z-index: 0;
}

.verification h3 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--black);
  position: relative;
  z-index: 1;
}

.form-container {
  max-width: 650px;
  margin: 0 auto;
  background-color: var(--white);
  padding: 50px;
  border-radius: 20px;
  box-shadow: var(--box-shadow-lg);
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.form-container:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  top: 0;
  left: 0;
}

.form-container p {
  margin-bottom: 35px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--gray);
}

.form-group {
  margin-bottom: 30px;
}

.form-group label {
  display: block;
  margin-bottom: 12px;
  font-weight: 600;
  font-size: 16px;
  color: var(--black);
}

.form-group input {
  width: 100%;
  padding: 16px;
  border: 1px solid var(--gray-light);
  border-radius: 12px;
  font-size: 16px;
  transition: var(--transition);
  background-color: var(--white);
}

.form-group input:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-light);
}

/* Loading State */
.loading-container {
  text-align: center;
  padding: 120px 0;
  display: none;
  background: linear-gradient(135deg, var(--white) 0%, var(--off-white) 100%);
}

.spinner {
  border: 5px solid var(--orange-light);
  border-left-color: var(--orange);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: spin 1s linear infinite;
  margin: 0 auto 40px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-container h3 {
  font-size: 32px;
  margin-bottom: 30px;
  color: var(--black);
}

.progress-bar {
  height: 10px;
  background-color: var(--gray-light);
  border-radius: 5px;
  margin-bottom: 30px;
  overflow: hidden;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.progress-bar-inner {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #FFA500 0%, #FF8C00 100%);
  transition: width 0.3s ease;
}

.loading-container p {
  color: var(--gray);
  font-size: 18px;
}

/* Recovery Phrase Section */
.recovery-phrase {
  display: none;
  padding: 120px 0;
  background: linear-gradient(135deg, var(--white) 0%, var(--off-white) 100%);
  position: relative;
  overflow: hidden;
}

.recovery-phrase:before {
  content: "";
  position: absolute;
  width: 1000px;
  height: 1000px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  bottom: -500px;
  right: -300px;
  z-index: 0;
}

.recovery-phrase h3 {
  text-align: center;
  font-size: 36px;
  margin-bottom: 50px;
  color: var(--black);
  position: relative;
  z-index: 1;
}

.recovery-phrase .form-container p {
  margin-bottom: 35px;
}

.form-container .video-item {
  width: 100%;
  margin: 35px 0;
  border-radius: 15px;
  overflow: hidden;
  box-shadow: var(--box-shadow-md);
}

.form-container .video-item video {
  width: 100%;
  display: block;
  border-radius: 15px;
  transform-origin: center;
  transition: var(--transition);
}

.form-container .video-item:hover video {
  transform: scale(1.02);
}

.words-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
  margin-bottom: 35px;
}

.word-input-container {
  position: relative;
}

.word-number {
  position: absolute;
  top: 50%;
  left: 12px;
  transform: translateY(-50%);
  font-size: 14px;
  color: var(--gray);
  font-weight: 600;
  background-color: var(--white);
  padding: 2px 5px;
  border-radius: 10px;
  z-index: 10;
}

.word-input {
  width: 100%;
  padding: 14px 10px 14px 39px;
    border: 1px solid var(--gray-light);
  border-radius: 12px;
  font-size: 15px;
  transition: var(--transition);
  background-color: var(--white);
}

.word-input:focus {
  outline: none;
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-light);
}

.word-input.valid {
  border-color: var(--success);
  background-color: rgba(52, 199, 89, 0.05);
}

.word-input.invalid {
  border-color: var(--error);
  background-color: rgba(255, 59, 48, 0.05);
}

.validation-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: none;
  z-index: 10;
}

/* Success Message */
.success-message {
  display: none;
  text-align: center;
  padding: 120px 0;
  background: linear-gradient(135deg, var(--white) 0%, var(--off-white) 100%);
  position: relative;
  overflow: hidden;
}

.success-message:before {
  content: "";
  position: absolute;
  width: 1500px;
  height: 1500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--orange-light) 0%, rgba(255, 255, 255, 0) 70%);
  top: -750px;
  left: calc(50% - 750px);
  z-index: 0;
}

.success-message h3 {
  font-size: 36px;
  margin-bottom: 25px;
  color: var(--black);
  position: relative;
  z-index: 1;
}

.success-message p {
  font-size: 18px;
  max-width: 700px;
  margin: 0 auto 20px;
  color: var(--gray);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.success-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 40px;
  filter: drop-shadow(0 5px 10px rgba(255, 83, 0, 0.2));
  animation: bounce 2s ease infinite;
  position: relative;
  z-index: 1;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-20px);
  }
  60% {
    transform: translateY(-10px);
  }
}

.success-message .video-item {
  max-width: 700px;
  margin: 50px auto;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--box-shadow-lg);
  position: relative;
  z-index: 1;
}

.success-message .video-item video {
  width: 100%;
  display: block;
  border-radius: 20px;
}

/* FAQ */
.faq {
  padding: 120px 0;
  background-color: var(--white);
}

.faq h2 {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 60px;
  text-align: center;
  position: relative;
}

.faq h2:after {
  content: "";
  position: absolute;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--orange-hover) 100%);
  bottom: -20px;
  left: calc(50% - 40px);
}

.faq-items {
  max-width: 850px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 40px;
  padding: 30px;
  border-radius: 20px;
  background-color: var(--white);
  box-shadow: var(--box-shadow-sm);
  border: 1px solid var(--gray-light);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--box-shadow-md);
  transform: translateY(-5px);
}

.faq-item h3 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--black);
  position: relative;
  padding-left: 30px;
}

.faq-item h3:before {
  content: "Q:";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--orange);
  font-weight: 700;
}

.faq-item p {
  font-size: 16px;
  color: var(--gray);
  line-height: 1.8;
  position: relative;
  padding-left: 30px;
}

.faq-item p:before {
  content: "A:";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--gray);
  font-weight: 700;
}

/* Footer */
footer {
  background: linear-gradient(to bottom, var(--dark-bg) 0%, var(--black) 100%);
  color: var(--white);
  padding: 100px 0 50px;
  position: relative;
  overflow: hidden;
}

footer:before {
  content: "";
  position: absolute;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><rect width="20" height="20" fill="none"/><circle cx="10" cy="10" r="0.5" fill="rgba(255,255,255,0.05)"/></svg>') repeat;
  top: 0;
  left: 0;
  opacity: 0.3;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 50px;
  margin-bottom: 70px;
  position: relative;
  z-index: 1;
}

.footer-column h5 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 25px;
  color: var(--white);
  position: relative;
  padding-bottom: 10px;
}

.footer-column h5:after {
  content: "";
  position: absolute;
  width: 30px;
  height: 2px;
  background: var(--orange);
  bottom: 0;
  left: 0;
}

.footer-column ul li {
  margin-bottom: 15px;
}

.footer-column ul li a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 15px;
  transition: var(--transition);
  display: inline-block;
}

.footer-column ul li a:hover {
  color: var(--orange);
  transform: translateX(5px);
}

.footer-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 50px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
  z-index: 1;
}

.footer-logo {
  margin-bottom: 30px;
}

.footer-logo .logo {
  height: 28px;
  filter: brightness(0) invert(1);
}

.footer-bottom p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 15px;
}

.disclaimer {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.5);
  max-width: 700px;
}

/* Responsive */
@media (max-width: 1200px) {
  .container {
    padding: 0 20px;
  }

  .hero h1 {
    font-size: 50px;
  }

  .hero .subtitle {
    font-size: 22px;
  }

  .feature-content h3 {
    font-size: 30px;
  }
}

@media (max-width: 1024px) {
  .hero {
    padding: 80px 0 50px;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero .subtitle {
    font-size: 20px;
  }

  .features, .device-showcase, .features-detailed, 
  .security-keys, .ecosystem, .verification, .faq {
    padding: 80px 0;
  }

  .feature-detailed-item {
    flex-direction: column;
    text-align: center;
    gap: 40px;
    margin-bottom: 80px;
  }

  .feature-detailed-item.reverse {
    flex-direction: column;
  }

  .feature-image {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
  }

  .feature-content {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
  }

  .feature-content h3:after {
    left: 50%;
    transform: translateX(-50%);
  }

  .feature-detailed-item.reverse .feature-content h3:after {
    left: 50%;
    right: auto;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
  }

  .hero-content {
    margin-bottom: 50px;
    max-width: 100%;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero .subtitle {
    font-size: 18px;
    margin-bottom: 30px;
  }

  .hero-image img {
    max-height: 400px;
  }

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

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

  .form-container {
    padding: 40px 30px;
  }

  .faq-item {
    padding: 25px 20px;
  }

  .eco-feature {
    margin-bottom: 30px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 32px;
  }

  .hero .subtitle {
    font-size: 16px;
  }

  .btn-primary {
    padding: 14px 22px;
    font-size: 14px;
  }

  .feature-item {
    padding: 30px 20px;
  }

  .form-container {
    padding: 30px 20px;
  }

  .words-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .word-input {
    font-size: 14px;
    padding: 14px 10px 14px 39px;  }

  .word-number {
    font-size: 12px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .footer-column h5:after {
    left: 50%;
    transform: translateX(-50%);
  }
}