:root {
  --ink: #101818;
  --muted: #52605c;
  --line: #dce5df;
  --paper: #f7f8f4;
  --white: #ffffff;
  --green: #2f7d4f;
  --blue: #1f6f8b;
  --gold: #c89a3a;
  --dark: #0c1716;
  --shadow: 0 20px 60px rgba(13, 28, 24, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  overflow-x: hidden;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial,
    sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 20;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 18px clamp(20px, 5vw, 64px);
  background: rgba(247, 248, 244, 0.86);
  border-bottom: 1px solid rgba(220, 229, 223, 0.78);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 190px;
  flex: 0 1 auto;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  background: var(--dark);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--white);
  font-weight: 800;
}

.brand strong,
.brand small {
  display: block;
  line-height: 1.2;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  color: var(--muted);
  font-size: 14px;
}

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

.lang-switcher {
  display: inline-flex;
  flex: 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--white);
}

.lang-switcher button {
  min-width: 42px;
  height: 36px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
}

.lang-switcher button:last-child {
  border-right: 0;
}

.lang-switcher button[aria-pressed="true"] {
  background: var(--dark);
  color: var(--white);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  color: var(--white);
}

.hero-media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.04);
  animation: heroFrame 24s infinite;
}

.hero-frame:nth-child(2) {
  animation-delay: 6s;
}

.hero-frame:nth-child(3) {
  animation-delay: 12s;
}

.hero-frame:nth-child(4) {
  animation-delay: 18s;
}

@keyframes heroFrame {
  0% {
    opacity: 1;
    transform: scale(1.04) translateX(0);
  }

  4% {
    opacity: 1;
  }

  25% {
    opacity: 1;
  }

  32% {
    opacity: 0;
    transform: scale(1.11) translateX(-1.5%);
  }

  100% {
    opacity: 0;
    transform: scale(1.11) translateX(-1.5%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-frame {
    animation: none;
  }

  .hero-frame:first-child {
    opacity: 1;
  }
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(7, 16, 15, 0.76), rgba(7, 16, 15, 0.24) 58%, rgba(7, 16, 15, 0.08)),
    linear-gradient(0deg, rgba(7, 16, 15, 0.36), rgba(7, 16, 15, 0.12));
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 92vh;
  max-width: 900px;
  flex-direction: column;
  justify-content: center;
  padding: 120px clamp(20px, 5vw, 72px) 80px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.eyebrow.dark {
  color: var(--green);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 22px;
  font-size: clamp(36px, 6vw, 76px);
  line-height: 1.06;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.16;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 21px;
  line-height: 1.3;
}

h1,
h2,
h3,
p,
a,
span,
strong,
button {
  overflow-wrap: anywhere;
}

.hero-copy {
  max-width: 680px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 19px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  text-align: center;
  font-weight: 800;
}

.primary-action {
  background: var(--gold);
  color: #15120a;
}

.secondary-action {
  border: 1px solid rgba(255, 255, 255, 0.42);
  color: var(--white);
}

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

.section {
  padding: 96px clamp(20px, 5vw, 72px);
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 90px);
  align-items: start;
  background: var(--white);
}

.intro p:last-child,
.module-copy p,
.delivery p {
  color: var(--muted);
  font-size: 18px;
}

.section-heading {
  max-width: 940px;
  margin-bottom: 42px;
}

.product {
  background: #eef3ee;
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 34px;
  align-items: stretch;
}

.product-media {
  overflow: hidden;
  min-height: 520px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-list {
  display: grid;
  gap: 16px;
}

.feature-list article {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
}

.feature-list span {
  display: block;
  margin-bottom: 22px;
  color: var(--green);
  font-weight: 900;
}

.feature-list p,
.scene-grid p {
  margin-bottom: 0;
  color: var(--muted);
}

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: var(--dark);
  color: var(--white);
}

.metric {
  min-height: 170px;
  padding: 34px clamp(20px, 4vw, 48px);
  border-right: 1px solid rgba(255, 255, 255, 0.14);
}

.metric strong {
  display: block;
  margin-bottom: 10px;
  color: var(--gold);
  font-size: clamp(34px, 4vw, 56px);
  line-height: 1;
}

.metric span {
  color: rgba(255, 255, 255, 0.78);
}

.module-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.72fr) minmax(0, 1.28fr);
  gap: 40px;
  align-items: center;
  background: var(--white);
}

.module-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.module-images img {
  width: 100%;
  height: 440px;
  object-fit: cover;
  background: #f4f5f1;
}

.scenes {
  background: var(--paper);
}

.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.scene-grid article {
  background: var(--white);
  border: 1px solid var(--line);
}

.scene-grid img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.scene-grid h3,
.scene-grid p {
  padding-right: 22px;
  padding-left: 22px;
}

.scene-grid h3 {
  margin-top: 22px;
}

.scene-grid p {
  padding-bottom: 26px;
}

.delivery {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.86fr);
  gap: 42px;
  align-items: center;
  background: var(--white);
}

.delivery img {
  width: 100%;
  min-height: 460px;
  object-fit: cover;
}

.delivery-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.delivery-list span {
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: #f7f8f4;
  color: var(--ink);
  font-weight: 700;
}

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 82px clamp(20px, 5vw, 72px);
  background:
    linear-gradient(100deg, rgba(12, 23, 22, 0.96), rgba(25, 80, 62, 0.9)),
    url("assets/scene-grid.jpg") center / cover;
  color: var(--white);
}

.contact h2 {
  max-width: 720px;
}

.contact p:not(.eyebrow) {
  max-width: 680px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.76);
  font-size: 18px;
}

.contact-details {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.contact-details a {
  min-width: 210px;
  max-width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
}

.contact-details span,
.contact-details strong {
  display: block;
}

.contact-details span {
  margin-bottom: 4px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

.contact-details strong {
  color: var(--white);
  font-size: 17px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(20px, 5vw, 72px);
  background: #07100f;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
}

@media (max-width: 980px) {
  .site-header {
    align-items: center;
  }

  .nav-links {
    display: none;
  }

  .intro,
  .product-layout,
  .module-grid,
  .delivery {
    grid-template-columns: 1fr;
  }

  .metric-band,
  .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .module-images img,
  .delivery img {
    height: auto;
    min-height: 0;
  }
}

@media (min-width: 641px) and (max-width: 1180px) {
  .site-header {
    gap: 18px;
  }

  .brand {
    min-width: 170px;
  }

  .section {
    padding-top: 82px;
    padding-bottom: 82px;
  }

  .hero,
  .hero-content {
    min-height: 760px;
  }

  .product-media {
    min-height: 420px;
  }

  .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    gap: 10px;
    padding: 12px 16px;
  }

  .brand {
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .lang-switcher button {
    min-width: 34px;
    height: 34px;
    font-size: 11px;
  }

  .hero,
  .hero-content {
    min-height: 720px;
  }

  .hero-content {
    padding: 104px 18px 54px;
  }

  h1 {
    font-size: clamp(34px, 12vw, 46px);
  }

  h2 {
    font-size: clamp(28px, 10vw, 38px);
  }

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

  .hero-actions,
  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .section {
    padding: 68px 18px;
  }

  .product-media {
    min-height: 0;
  }

  .metric-band,
  .scene-grid,
  .module-images {
    grid-template-columns: 1fr;
  }

  .metric {
    min-height: 132px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  }

  .contact {
    display: block;
    padding: 64px 18px;
  }

  .contact .primary-action {
    margin-top: 28px;
  }

  .contact-details a {
    width: 100%;
  }

  footer {
    display: block;
  }

  footer span {
    display: block;
    margin-bottom: 8px;
  }
}