:root {
  --color-ink: #1d1d1f;
  --color-graphite: #707070;
  --color-fog: #f5f5f7;
  --color-snow: #ffffff;
  --color-azure: #0071e3;
  --color-cobalt-link: #0066cc;
  --color-silver-mist: #e8e8ed;
  --font-display: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-text: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
  --radius-card: 28px;
  --radius-pill: 999px;
  --spacing-sec: 64px;
  --max-width: 1200px;

  scroll-behavior: smooth;
}

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

body {
  font-family: var(--font-text);
  background: var(--color-fog);
  color: var(--color-ink);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  scroll-behavior: smooth;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.header {
  background: var(--color-fog);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background: rgba(245, 245, 247, 0.9);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo a {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.logo img {
  border-radius: 8px;
}
.notice {
  font-size: 0.9rem;
  color: var(--color-graphite);
  background: var(--color-snow);
  padding: 6px 14px;
  border-radius: 20px;
}

main {
  flex: 1;
}

section {
  padding: var(--spacing-sec) 0;
}

.hero {
  background: #ffffff;
  overflow: hidden;
}
.hero-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  min-height: 80vh;
}
.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, #1d1d1f 0%, #0071e3 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subhead {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--color-graphite);
  max-width: 500px;
}
.hero-price {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-ink);
}
.cta-btn {
  display: inline-block;
  background: var(--color-azure);
  color: #fff;
  font-weight: 500;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-size: 1rem;
  transition:
    transform 0.2s,
    background 0.2s;
  align-self: flex-start;
}
.cta-btn:hover {
  background: #005bb5;
  transform: scale(1.05);
}
.hero-quick-faq {
  margin-top: 20px;
}
.faq-item {
  border-bottom: 1px solid var(--color-silver-mist);
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 16px 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 500;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--color-ink);
}
.faq-question i {
  font-size: 0.9rem;
  transition: transform 0.2s;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-answer p {
  padding-bottom: 16px;
  color: var(--color-graphite);
  line-height: 1.5;
}
.faq-item.active .faq-answer {
  max-height: 200px;
}
.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.hero-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-card);
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 40px;
  color: var(--color-ink);
}

.features-grid-irregular {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--color-snow);
  border-radius: var(--radius-card);
  padding: 32px;
  transition:
    transform 0.3s,
    box-shadow 0.3s;
  border: 1px solid transparent;
  background-clip: padding-box;
  position: relative;
}
.feature-card:hover {
  transform: scale(1.03) rotate(0.5deg);
  border: 1px solid transparent;
  background-image:
    linear-gradient(white, white), linear-gradient(135deg, #0071e3, #f5f5f7);
  background-origin: border-box;
  background-clip: padding-box, border-box;
}
.card-span-2 {
  grid-column: span 2;
}
.feature-icon {
  font-size: 2rem;
  margin-bottom: 16px;
  color: var(--color-azure);
}
.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
  font-weight: 600;
}
.feature-card p {
  color: var(--color-graphite);
  line-height: 1.5;
}

.product-details {
  background: var(--color-snow);
  overflow: hidden;
}
.details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.specs-table {
  background: var(--color-fog);
  border-radius: var(--radius-card);
  padding: 32px;
}
.specs-table h3 {
  margin-bottom: 24px;
  font-size: 1.5rem;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-silver-mist);
  font-size: 0.95rem;
}
.spec-row span:last-child {
  font-weight: 500;
}
.product-slider {
  position: relative;
}
.slider-main img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  transition: opacity 0.3s;
}
.slider-thumbs {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  justify-content: center;
}
.slider-thumbs .thumb {
  width: 70px;
  height: 50px;
  object-fit: cover;
  border-radius: 10px;
  cursor: pointer;
  opacity: 0.6;
  transition:
    opacity 0.2s,
    border 0.2s;
  border: 2px solid transparent;
}
.slider-thumbs .thumb.active {
  opacity: 1;
  border-color: var(--color-azure);
}

.reviews {
  background: var(--color-fog);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.5);
  transition: transform 0.3s;
}
.review-card:hover {
  transform: translateY(-8px);
}
.review-card p {
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 16px;
}
.review-author strong {
  font-weight: 600;
}
.review-author span {
  color: var(--color-graphite);
  font-size: 0.9rem;
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
}

.contact {
  background: linear-gradient(135deg, #f5f5f7 0%, #e8e8ed 100%);
}
.contact-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-card);
  padding: 48px;
  border: 1px solid rgba(255, 255, 255, 0.8);
}
.contact-card .section-title {
  font-size: 2rem;
  margin-bottom: 32px;
}
form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
input,
textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--color-silver-mist);
  border-radius: 12px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-snow);
}
textarea {
  resize: vertical;
}
.checkboxes label {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--color-ink);
  line-height: 1.4;
}
.checkboxes input[type='checkbox'] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--color-azure);
}

.footer {
  margin-top: auto;
  background: var(--color-ink);
  color: var(--color-snow);
  padding: 48px 24px 32px;
  font-size: 0.95rem;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  row-gap: 32px;
  column-gap: 60px;
}
.footer-logo {
  grid-column: 1 / -1;
  filter: brightness(10);
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
}
.footer-legal a {
  color: var(--color-snow);
  opacity: 0.9;
  transition: opacity 0.2s;
}
.footer-legal a:hover {
  opacity: 1;
  text-decoration: underline;
}
.footer-contact p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.5;
}
.footer-disclaimer {
  grid-column: 1 / -1;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  line-height: 1.5;
}
.footer-copy {
  grid-column: 1 / -1;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 16px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s,
    visibility 0.3s;
  z-index: 200;
}
.overlay.active {
  opacity: 1;
  visibility: visible;
}
.modal {
  background: var(--color-snow);
  border-radius: var(--radius-card);
  max-width: 480px;
  width: 90%;
  padding: 40px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}
.modal img {
  margin: 0 auto 20px;
}
.modal h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
}
.modal p {
  color: var(--color-graphite);
  line-height: 1.5;
  margin-bottom: 12px;
}
.close-modal {
  margin-top: 24px;
}

@media (max-width: 768px) {
  .header-inner {
    flex-wrap: wrap;
    row-gap: 10px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 32px;
  }
  .features-grid-irregular {
    grid-template-columns: 1fr;
  }
  .card-span-2 {
    grid-column: span 1;
  }
  .details-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

.legal-section {
  background: var(--color-snow);
  padding: 60px 24px;
  word-break: break-all;
}

.legal-card {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

.legal-card h1 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  color: var(--color-ink);
}

.legal-card h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--color-ink);
}

.legal-card h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 20px 0 8px;
  color: var(--color-ink);
}

.legal-card p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.legal-card ul,
.legal-card ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.legal-card li {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink);
}

.legal-card a {
  color: var(--color-cobalt-link);
  text-decoration: underline;
}