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

:root {
  --black: #0a0a0a;
  --black-800: #141414;
  --black-700: #1e1e1e;
  --black-600: #2a2a2a;
  --yellow: #ffd100;
  --yellow-dark: #e6bc00;
  --red: #e63946;
  --red-dark: #c1121f;
  --gray-900: #f0f0f0;
  --gray-700: #b0b0b0;
  --gray-500: #707070;
  --gray-300: #3a3a3a;
  --gray-200: #2e2e2e;
  --white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-yellow: 0 0 40px rgba(255, 209, 0, 0.15);
  --radius: 16px;
  --radius-sm: 10px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Manrope', system-ui, sans-serif;
  color: var(--gray-900);
  background: var(--black);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-300);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--white);
}

.logo-ko {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--yellow);
  color: var(--black);
  font-weight: 900;
  font-size: 0.75rem;
  border-radius: 6px;
}

.logo-accent {
  color: var(--yellow);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray-700);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

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

.nav-cta {
  margin-left: auto;
}

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-sm { padding: 8px 18px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-full { width: 100%; }

.btn-primary {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--yellow);
}

.btn-primary:hover {
  background: var(--yellow-dark);
  border-color: var(--yellow-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-yellow);
}

.btn-secondary {
  background: var(--black-600);
  color: var(--yellow);
  border-color: var(--gray-300);
}

.btn-secondary:hover {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--yellow);
}

.btn-outline {
  background: transparent;
  color: var(--gray-900);
  border-color: var(--gray-300);
}

.btn-outline:hover {
  background: var(--black-700);
  border-color: var(--yellow);
  color: var(--yellow);
}

/* Hero */
.hero {
  position: relative;
  padding: 160px 0 80px;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 75% 30%, rgba(255, 209, 0, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 15% 70%, rgba(230, 57, 70, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, var(--black-800) 0%, var(--black) 100%);
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--black-700);
  border: 1px solid var(--gray-300);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--yellow);
  margin-bottom: 24px;
}

.badge-hot {
  background: rgba(230, 57, 70, 0.15);
  border-color: var(--red);
  color: var(--red);
  animation: badge-glow 2s ease-in-out infinite;
}

@keyframes badge-glow {
  0%, 100% { box-shadow: 0 0 0 rgba(230, 57, 70, 0); }
  50% { box-shadow: 0 0 12px rgba(230, 57, 70, 0.3); }
}

/* Urgency bar */
.urgency-bar {
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  z-index: 99;
  background: linear-gradient(90deg, var(--red-dark), var(--red));
  padding: 10px 0;
}

.urgency-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.urgency-inner p {
  font-size: 0.875rem;
  color: var(--white);
  text-align: center;
  margin: 0;
}

.urgency-pulse {
  width: 8px;
  height: 8px;
  background: var(--white);
  border-radius: 50%;
  flex-shrink: 0;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* Price */
.hero-price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.price-old {
  font-size: 1.1rem;
  color: var(--gray-500);
  text-decoration: line-through;
}

.price-current {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--yellow);
  line-height: 1;
}

.price-current small {
  font-size: 1.2rem;
  font-weight: 600;
}

.price-from {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-700);
}

.hero-trust {
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--gray-500);
}

.card-price {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--yellow);
  margin-bottom: 8px;
}

.card-price span {
  font-size: 1rem;
  font-weight: 600;
}

.spec-price {
  color: var(--yellow) !important;
  font-size: 1.1rem !important;
}

/* Delivery section */
.delivery {
  background: var(--black-800);
}

.delivery-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.delivery-card {
  background: var(--black-700);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
}

.delivery-card:hover {
  border-color: var(--yellow);
}

.delivery-main {
  border-color: var(--yellow);
  box-shadow: var(--shadow-yellow);
}

.delivery-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.delivery-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.delivery-card p {
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 16px;
}

.delivery-highlight {
  color: var(--yellow) !important;
  font-weight: 600 !important;
}

.delivery-list {
  list-style: none;
}

.delivery-list li {
  padding: 6px 0;
  font-size: 0.875rem;
  color: var(--gray-700);
  padding-left: 20px;
  position: relative;
}

.delivery-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--yellow);
  font-weight: 700;
}

.payment-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pay-badge {
  padding: 6px 12px;
  background: var(--black-600);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-900);
}

.pay-badge.pay-crypto {
  border-color: var(--yellow);
  color: var(--yellow);
}

/* CTA banner */
.cta-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 32px;
  background: linear-gradient(135deg, var(--black-700), var(--black-600));
  border: 2px solid var(--yellow);
  border-radius: var(--radius);
  box-shadow: var(--shadow-yellow);
}

.cta-banner-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cta-banner-text strong {
  font-size: 1.1rem;
  color: var(--white);
}

.cta-banner-text span {
  font-size: 0.9rem;
  color: var(--gray-700);
}


.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-bottom: 20px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--yellow), var(--red));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text {
  font-size: 1.125rem;
  color: var(--gray-700);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-text strong {
  color: var(--yellow);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 40px;
}

.stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--yellow);
}

.stat span {
  font-size: 0.85rem;
  color: var(--gray-500);
}

/* Product showcase */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-showcase {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  animation: float 6s ease-in-out infinite;
}

.product-glow {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 209, 0, 0.12) 0%, transparent 70%);
  z-index: 0;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.product-img {
  position: relative;
  z-index: 1;
  max-height: 420px;
  width: auto;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.6));
}

.product-made {
  margin-top: 20px;
  padding: 6px 16px;
  background: var(--black-700);
  border: 1px solid var(--gray-300);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-700);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Sections */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--yellow);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.section-header p {
  color: var(--gray-700);
  font-size: 1.05rem;
}

/* Product cards */
.product-section {
  background: var(--black-800);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto 60px;
}

.product-card {
  position: relative;
  background: var(--black-700);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-300);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--yellow);
}

.product-card.featured {
  border-color: var(--yellow);
  box-shadow: var(--shadow-yellow);
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: var(--red);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 100px;
}

.size-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--yellow);
  color: var(--black);
  font-size: 1.1rem;
  font-weight: 800;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  width: fit-content;
}

.product-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.product-card p {
  color: var(--gray-700);
  font-size: 0.95rem;
  margin-bottom: 20px;
  flex: 1;
}

.product-features {
  list-style: none;
  margin-bottom: 24px;
}

.product-features li {
  padding: 6px 0;
  font-size: 0.9rem;
  color: var(--gray-700);
  padding-left: 24px;
  position: relative;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--yellow);
  font-weight: 700;
}

.product-card .btn {
  width: 100%;
}

/* Specs */
.specs-block {
  max-width: 800px;
  margin: 0 auto;
  background: var(--black-700);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 32px;
}

.specs-block h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 24px;
  text-align: center;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.spec {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 16px;
  background: var(--black-600);
  border-radius: var(--radius-sm);
}

.spec-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.spec-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--gray-900);
}

/* Advantages */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.advantage {
  padding: 32px;
  border-radius: var(--radius);
  background: var(--black-800);
  border: 1px solid var(--gray-300);
  transition: var(--transition);
}

.advantage:hover {
  border-color: var(--yellow);
  box-shadow: var(--shadow-yellow);
}

.advantage-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--yellow);
  opacity: 0.5;
  margin-bottom: 12px;
}

.advantage h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}

.advantage p {
  color: var(--gray-700);
  font-size: 0.95rem;
}

/* Order */
.order {
  background: linear-gradient(180deg, var(--black) 0%, var(--black-800) 100%);
}

.order-section {
  max-width: 480px;
  margin: 0 auto;
}

.order-header {
  text-align: center;
  margin-bottom: 24px;
}

.order-header h2 {
  font-size: clamp(1.5rem, 5vw, 2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
}

.order-subtitle {
  font-size: 0.9rem;
  color: var(--gray-700);
}

.order-subtitle strong {
  color: var(--yellow);
}

.order-form-wrap {
  width: 100%;
}

.order-trust {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: 0.78rem;
  color: var(--gray-500);
}

.order-trust span {
  padding: 6px 12px;
  background: var(--black-700);
  border: 1px solid var(--gray-300);
  border-radius: 100px;
}

/* Form */
.order-form {
  background: var(--black-700);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-300);
}

.form-group {
  margin-bottom: 14px;
}

.form-group-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.form-group-inline label {
  margin-bottom: 0;
}

.form-group label,
.size-picker legend {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--gray-900);
  margin-bottom: 6px;
}

.size-picker {
  border: none;
  margin: 0 0 14px;
  padding: 0;
}

.size-picker legend {
  padding: 0;
}

.size-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.size-option {
  cursor: pointer;
}

.size-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.size-option-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 64px;
  padding: 12px 8px;
  background: var(--black-600);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  text-align: center;
}

.size-option-box strong {
  font-size: 1rem;
  color: var(--white);
}

.size-option-box em {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--yellow);
  font-weight: 600;
}

.size-option input:checked + .size-option-box {
  border-color: var(--yellow);
  background: rgba(255, 209, 0, 0.08);
  box-shadow: var(--shadow-yellow);
}

.size-option input.error + .size-option-box {
  border-color: var(--red);
}

.qty-control {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--black-600);
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.qty-btn {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--black-700);
  color: var(--yellow);
  font-size: 1.25rem;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
}

.qty-btn:active {
  background: var(--gray-300);
}

.qty-control input {
  width: 48px;
  text-align: center;
  border: none !important;
  border-radius: 0 !important;
  padding: 10px 4px !important;
  background: transparent !important;
  -moz-appearance: textfield;
}

.qty-control input::-webkit-outer-spin-button,
.qty-control input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 16px;
  color: var(--white);
  background: var(--black-600);
  transition: border-color var(--transition);
  -webkit-appearance: none;
}

.form-group input::placeholder {
  color: var(--gray-500);
}

.form-group input:focus {
  outline: none;
  border-color: var(--yellow);
}

.form-group input.error {
  border-color: var(--red);
}

.form-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  background: var(--black-600);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: var(--gray-700);
}

.form-total strong {
  font-size: 1.25rem;
  color: var(--yellow);
}

.form-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 10px;
}

.form-success {
  text-align: center;
  padding: 32px 20px;
  background: var(--black-700);
  border: 1px solid var(--yellow);
  border-radius: var(--radius);
}

.success-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: var(--yellow);
  color: var(--black);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
}

.form-success h3 {
  color: var(--white);
  margin-bottom: 8px;
}

.form-success p {
  color: var(--gray-700);
  font-size: 0.9rem;
  margin-bottom: 20px;
}

#submit-btn:disabled {
  opacity: 0.6;
  cursor: wait;
}

.form-error {
  color: var(--red);
  font-size: 0.85rem;
  text-align: center;
  margin-top: 8px;
}

/* Footer */
.footer {
  background: var(--black-800);
  border-top: 1px solid var(--gray-300);
  color: var(--gray-700);
  padding: 48px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  max-width: 320px;
}

.footer-contact h4 {
  color: var(--white);
  font-size: 0.95rem;
  margin-bottom: 12px;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-700);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.footer-link:hover {
  color: var(--yellow);
}

.footer-legal {
  text-align: right;
  font-size: 0.85rem;
}

.footer-legal p {
  color: var(--gray-500);
}

.footer-disclaimer {
  margin-top: 4px;
  color: var(--red) !important;
  font-size: 0.8rem !important;
}

/* Mobile nav */
.nav.open .nav-links {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--black-800);
  padding: 24px;
  gap: 16px;
  border-bottom: 1px solid var(--gray-300);
  box-shadow: var(--shadow-md);
}

/* Responsive */
@media (max-width: 900px) {
  .hero-grid,
  .cards-grid,
  .delivery-grid {
    grid-template-columns: 1fr;
  }

  .section.order {
    padding: 60px 0 80px;
  }

  .order-section {
    padding: 0 16px;
  }

  .order-form {
    padding: 16px;
  }

  .cta-banner {
    flex-direction: column;
    text-align: center;
  }

  .urgency-inner p {
    font-size: 0.78rem;
  }

  .hero-visual {
    order: -1;
  }

  .product-img {
    max-height: 300px;
  }

  .advantages-grid,
  .specs-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-brand p {
    max-width: none;
  }

  .footer-legal {
    text-align: center;
  }

  .nav-links,
  .nav-cta {
    display: none;
  }

  .burger {
    display: flex;
  }

  .hero-stats {
    gap: 24px;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .container {
    padding: 0 16px;
  }
}