:root {
  --bg: #f7f7f5;
  --surface: #ffffff;
  --surface-soft: #f1f1ee;
  --text: #111111;
  --muted: #666666;
  --line: #e5e5df;
  --accent: #111111;
  --accent-2: #5b5b66;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

img {
  max-width: 100%;
  display: block;
  border: none;
  outline: none;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(17,17,17,.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.12);
}

.site-header .bar {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -.02em;
  color: #fff;
}

.nav {
  display: flex;
  gap: 24px;
  align-items: center;
  color: #e9e9e9;
  font-size: 14px;
}

.nav a:hover { opacity: .75; }

.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #d8d8d8;
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border: none;
  outline: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.20), rgba(0,0,0,.55));
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin-left: auto;
  padding: 80px 0;
  color: #fff;
  text-align: center;
}

.hero h1 {
  font-size: 64px;
  line-height: 1.02;
  letter-spacing: -.04em;
  margin: 0 0 18px;
  font-weight: 850;
}

.hero p {
  font-size: 18px;
  max-width: 640px;
  margin: 0 auto 28px;
  color: rgba(255,255,255,.86);
}

.actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 600;
  font-size: 15px;
  transition: .2s ease;
}

.btn-dark {
  background: #5c5d67;
  color: #fff;
}

.btn-dark:hover { background: #4c4d56; }
.btn-ghost { color: #d7d7d7; }

.section { padding: 32px 0; }

.product-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 42px;
  align-items: center;
  margin-bottom: 58px;
}

.product-row.reverse .text { order: 2; }
.product-row.reverse .media { order: 1; }

.copy h2 {
  font-size: 48px;
  line-height: 1.05;
  letter-spacing: -.04em;
  margin: 0 0 12px;
  font-weight: 850;
}

.copy p {
  font-size: 17px;
  color: var(--muted);
  max-width: 500px;
  margin: 0 0 24px;
}

.media-card {
  background: none;
  border: none;
  border-radius: var(--radius);
  padding: 0;
  box-shadow: none;
}

.media-card img {
  width: 100%;
  border-radius: 12px;
  object-fit: cover;
  border: none;
  outline: none;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 60px;
  background: transparent;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 28px;
}

.footer h4 {
  margin: 0 0 12px;
  font-size: 16px;
}

.footer p,
.footer a {
  font-size: 14px;
  color: var(--muted);
  display: block;
  margin: 8px 0;
}

.product-hero { padding: 72px 0 28px; }

.breadcrumbs {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 18px;
}

.product-title {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 36px;
  align-items: center;
}

.product-title h1 {
  font-size: 58px;
  line-height: 1.02;
  letter-spacing: -.045em;
  margin: 0 0 14px;
}

.product-title p {
  font-size: 18px;
  color: var(--muted);
  margin: 0 0 22px;
  max-width: 650px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(4,1fr);
  gap: 16px;
  margin: 34px 0 0;
}

.spec {
  background: var(--surface);
  border: none;
  border-radius: 16px;
  padding: 18px;
}

.spec strong {
  display: block;
  font-size: 14px;
  margin-bottom: 8px;
  color: var(--muted);
  font-weight: 600;
}

.spec span {
  font-size: 18px;
  font-weight: 700;
}

.content-grid {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 38px;
  padding: 24px 0 88px;
  align-items: stretch;
}

.card {
  height: 100%;
  background: var(--surface);
  border: none;
  border-radius: 20px;
  padding: 26px;
  box-shadow: none;
}

.card h3 {
  margin-bottom: 14px;
  margin: 0 0 12px;
  font-size: 24px;
  letter-spacing: -.02em;
}

.card p {
  margin: 0 0 14px;
  color: var(--muted);
}

.list {
  padding-left: 18px;
  color: var(--muted);
}

.list li { margin: 8px 0; }

.side-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
  background: none;
  border: none;
  border-radius: 20px;
  padding: 0;
  box-shadow: none;
}

.side-image img {
  border-radius: 14px;
  width: 100%;
  border: none;
  outline: none;
}

.notice {
  background: #f0f0ec;
  border: none;
  padding: 16px 18px;
  border-radius: 16px;
  color: #444;
  margin-top: 18px;
}

.gallery {
  margin-top: 24px;
}

.gallery-main {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  background: #202228;
}

.gallery-main img {
  width: 100%;
  display: block;
}

table {
  margin-top: 20px;
  border-collapse: separate;
  border-spacing: 0;
}

th, td {
  padding: 13px 16px;
  border-color: #e5e7eb;
}

th {
  background: #f3f4f6;
}

.screen-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 12px;
}

.screen-item {
  padding: 14px;
}

.screen-item img {
  width: 100%;
  border-radius: 12px;
  margin-bottom: 12px;
}

.screen-item strong {
  display: block;
  font-size: 15px;
  margin-bottom: 6px;
  color: var(--text);
}

.screen-item span {
  display: block;
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

.thumbs {
  display: flex;
  gap: 10px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.thumbs button {
  border: none;
  padding: 0;
  background: transparent;
  cursor: pointer;
}

.thumbs img {
  width: 120px;
  border-radius: 10px;
  opacity: .65;
  transition: opacity .2s ease, transform .2s ease;
}

.thumbs img.active {
  opacity: 1;
  transform: translateY(-2px);
}

@media (max-width: 640px) {
  .thumbs img { width: 88px; }
}

@media (max-width: 980px) {
  .hero { min-height: 540px; }
  .hero h1 { font-size: 48px; }
  .product-row,
  .product-title,
  .content-grid,
  .footer-grid { grid-template-columns: 1fr; }
  .product-row.reverse .text,
  .product-row.reverse .media { order: initial; }
  .spec-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .container { padding: 0 18px; }
  .nav { gap: 14px; font-size: 13px; }
  .brand { font-size: 18px; }
  .hero { min-height: 480px; }
  .hero-content { padding: 56px 0; }
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 16px; }
  .copy h2 { font-size: 34px; }
  .product-title h1 { font-size: 40px; }
  .spec-grid { grid-template-columns: 1fr; }
}