:root {
  color-scheme: light;
  --ink: #17242b;
  --muted: #5e6b71;
  --line: #d4e3e8;
  --paper: #f2f8fb;
  --white: #ffffff;
  --surface: #ffffff;
  --surface-soft: #eaf4f8;
  --teal: #0d6f73;
  --teal-dark: #074e52;
  --coral: #c4583e;
  --gold: #bd8d3b;
  --slate: #263238;
  --header-bg: rgba(242, 248, 251, 0.94);
  --control-bg: #e4eff4;
  --control-active-bg: #074e52;
  --control-active-text: #ffffff;
  --hero-overlay:
    linear-gradient(270deg, rgba(8, 15, 17, 0.88) 0%, rgba(8, 15, 17, 0.72) 36%, rgba(8, 15, 17, 0.28) 68%, rgba(8, 15, 17, 0.08) 100%),
    linear-gradient(0deg, rgba(8, 15, 17, 0.55) 0%, rgba(8, 15, 17, 0.08) 48%);
  --hero-copy: #e5f1ef;
  --stat-bg: rgba(18, 29, 32, 0.78);
  --stat-border: rgba(255, 255, 255, 0.18);
  --secondary-bg: rgba(255, 255, 255, 0.58);
  --secondary-border: rgba(7, 78, 82, 0.28);
  --secondary-text: #074e52;
  --product-image-bg: linear-gradient(140deg, #f6fbfd, #dfeef4);
  --tag-bg: #e4f2f5;
  --feature-bg: #263238;
  --feature-text: #ffffff;
  --feature-muted: rgba(255, 255, 255, 0.72);
  --feature-list: rgba(255, 255, 255, 0.86);
  --logistics-bg: #e2eff4;
  --footer-bg: #17242b;
  --shadow: 0 20px 60px rgba(23, 36, 43, 0.14);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #edf8f7;
  --muted: #a4b8ba;
  --line: rgba(196, 222, 222, 0.18);
  --paper: #0d1416;
  --white: #ffffff;
  --surface: #121d20;
  --surface-soft: #17272a;
  --teal: #42c5bf;
  --teal-dark: #8ee4dd;
  --coral: #ff8d70;
  --gold: #d5b06a;
  --slate: #0f181b;
  --header-bg: rgba(13, 20, 22, 0.9);
  --control-bg: rgba(255, 255, 255, 0.08);
  --control-active-bg: #42c5bf;
  --control-active-text: #061113;
  --hero-overlay:
    linear-gradient(270deg, rgba(8, 15, 17, 0.94) 0%, rgba(8, 15, 17, 0.82) 40%, rgba(8, 15, 17, 0.34) 72%, rgba(8, 15, 17, 0.12) 100%),
    linear-gradient(0deg, rgba(8, 15, 17, 0.82) 0%, rgba(8, 15, 17, 0) 45%);
  --hero-copy: #c8d8d9;
  --stat-bg: rgba(18, 29, 32, 0.82);
  --stat-border: rgba(196, 222, 222, 0.18);
  --secondary-bg: rgba(255, 255, 255, 0.06);
  --secondary-border: rgba(142, 228, 221, 0.35);
  --secondary-text: #d9fffb;
  --product-image-bg: linear-gradient(140deg, #15272a, #203538);
  --tag-bg: rgba(66, 197, 191, 0.13);
  --feature-bg: #101a1d;
  --feature-text: #edf8f7;
  --feature-muted: #a4b8ba;
  --feature-list: #d7e7e8;
  --logistics-bg: #111b1e;
  --footer-bg: #070d0f;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  transition: background-color 180ms ease, color 180ms ease;
}

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

a {
  color: inherit;
}

.svg-sprite {
  display: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  white-space: nowrap;
}

.brand-logo {
  width: 46px;
  height: 46px;
  object-fit: contain;
  background: #ffffff;
  border-radius: 8px;
  padding: 4px;
  border: 1px solid var(--line);
}

.brand strong {
  display: block;
  line-height: 1;
  font-size: 1.05rem;
}

.nav {
  display: flex;
  justify-content: center;
  gap: clamp(14px, 2.8vw, 34px);
}

.nav a {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
}

.nav a:hover {
  color: var(--teal-dark);
}

.header-actions {
  display: flex;
  justify-content: end;
  gap: 10px;
}

.language-switch,
.theme-switch {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  padding: 4px;
  background: var(--control-bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-switch {
  width: 104px;
}

.theme-switch {
  width: 132px;
}

.language-button,
.theme-button {
  min-height: 34px;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 800;
}

.language-button.active,
.theme-button.active {
  color: var(--control-active-text);
  background: var(--control-active-bg);
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-background,
.hero-background img,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-background img {
  object-fit: cover;
  object-position: center center;
  filter: saturate(0.96) contrast(1.02);
  opacity: 1;
  transform: none;
}

.hero-overlay {
  background: var(--hero-overlay);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(1160px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(104px, 15vh, 136px) 0 30px;
  color: #edf8f7;
  display: grid;
  justify-items: end;
  text-align: left;
}

.eyebrow {
  margin: 0 0 13px;
  color: var(--coral);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: var(--coral);
}

.hero h1,
.hero .eyebrow,
.hero-copy,
.hero-actions {
  width: min(100%, 620px);
}

.hero h1 {
  font-size: clamp(3.2rem, 6.2vw, 5.7rem);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  font-size: clamp(3.25rem, 7.2vw, 6.8rem);
  line-height: 0.88;
}

h2 {
  max-width: 820px;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 0.98;
}

h3 {
  font-size: 1.08rem;
}

.hero-copy {
  max-width: 650px;
  margin: 18px 0 0;
  color: var(--hero-copy);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 19px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  color: var(--white);
  background: var(--coral);
}

.button.primary:hover {
  background: #a74732;
}

.button.secondary {
  color: var(--secondary-text);
  border-color: var(--secondary-border);
  background: var(--secondary-bg);
}

.button.full {
  width: 100%;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  width: min(100%, 800px);
  max-width: 800px;
  margin: 30px 0 0;
  background: var(--stat-border);
  border: 1px solid var(--stat-border);
  border-radius: 8px;
  overflow: hidden;
}

.hero-stats div {
  min-height: 90px;
  padding: 16px;
  background: var(--stat-bg);
  backdrop-filter: blur(10px);
}

.hero-stats dt {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 900;
}

.hero-stats dd {
  margin: 7px 0 0;
  color: rgba(237, 248, 247, 0.78);
}

.trust-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.trust-band div {
  padding: 28px clamp(18px, 4vw, 54px);
  background: var(--surface);
}

.trust-band strong,
.trust-band span {
  display: block;
}

.trust-band strong {
  font-size: 1.1rem;
}

.trust-band span {
  margin-top: 7px;
  color: var(--muted);
  line-height: 1.5;
}

.section {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: clamp(68px, 10vw, 118px) 0;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(190px, 0.32fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 42px;
}

.section-heading.compact {
  margin-bottom: 26px;
}

.benefit-grid,
.official-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.benefit-grid article,
.official-grid article,
.product-card,
.buyer-list article,
.contact-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(23, 36, 43, 0.03);
}

.benefit-grid article {
  min-height: 235px;
  padding: 24px;
}

.official-grid {
  grid-template-columns: repeat(3, 1fr);
}

.official-grid article {
  display: grid;
  min-height: 220px;
  align-content: start;
  gap: 14px;
  padding: 24px;
}

.benefit-grid svg,
.official-grid svg,
.contact-link svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.benefit-grid svg {
  color: var(--teal);
}

.official-grid svg {
  width: 34px;
  height: 34px;
  color: var(--teal);
}

.benefit-grid h3 {
  margin-top: 24px;
}

.benefit-grid p,
.official-grid p,
.feature-copy p,
.buyer-list p,
.contact p,
.product-card p {
  color: var(--muted);
  line-height: 1.65;
}

.official-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.button.on-paper {
  color: var(--secondary-text);
}

.feature-story {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(24px, 5vw, 74px);
  align-items: center;
  padding: clamp(62px, 9vw, 96px) clamp(18px, 5vw, 72px);
  background: var(--feature-bg);
  color: var(--feature-text);
}

.feature-story img {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.feature-copy p {
  color: var(--feature-muted);
  font-size: 1.05rem;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  color: var(--feature-list);
  line-height: 1.5;
}

.check-list li::before {
  content: "";
  position: absolute;
  top: 0.48em;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--gold);
  border-radius: 50%;
}

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

.product-card {
  display: grid;
  grid-template-rows: 230px auto;
  overflow: hidden;
}

.product-image {
  display: grid;
  min-height: 230px;
  place-items: center;
  padding: 18px;
  background: var(--product-image-bg);
}

.product-image img {
  width: min(100%, 210px);
  max-height: 205px;
  object-fit: contain;
}

.product-body {
  display: grid;
  gap: 14px;
  padding: 20px;
}

.product-card h3 {
  font-size: 1.22rem;
}

.product-card p {
  margin: 0;
  min-height: 78px;
}

.product-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding-top: 4px;
}

.product-quote {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  color: var(--white);
  background: var(--teal-dark);
  border-radius: 8px;
  font-weight: 850;
  text-decoration: none;
}

.product-quote:hover {
  background: var(--teal);
}

.product-meta span {
  display: grid;
  gap: 4px;
  padding: 10px;
  background: var(--surface-soft);
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.76rem;
}

.product-meta strong {
  color: var(--ink);
  font-size: 0.98rem;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  min-height: 58px;
}

.tags span {
  padding: 6px 9px;
  color: var(--teal-dark);
  background: var(--tag-bg);
  border-radius: 7px;
  font-size: 0.77rem;
  font-weight: 800;
}

.buyer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.8fr);
  gap: 22px;
  align-items: start;
}

.buyer-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.buyer-images figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.buyer-images img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.buyer-images figure:first-child img {
  object-position: center center;
}

.buyer-images figure:last-child img {
  object-position: center center;
}

.buyer-images figcaption {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 14px;
  padding: 10px 12px;
  color: var(--white);
  background: rgba(23, 36, 43, 0.72);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 800;
  backdrop-filter: blur(10px);
}

.buyer-list {
  display: grid;
  gap: 14px;
}

.buyer-list article {
  padding: 24px;
}

.buyer-list span {
  display: block;
  margin-bottom: 30px;
  color: var(--coral);
  font-size: 0.85rem;
  font-weight: 950;
}

.buyer-list p {
  margin-bottom: 0;
}

.logistics {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  align-items: stretch;
  background: var(--logistics-bg);
}

.logistics img {
  width: 100%;
  height: 100%;
  min-height: 560px;
  object-fit: cover;
}

.logistics > div {
  padding: clamp(46px, 7vw, 86px);
}

.spec-table {
  display: grid;
  gap: 1px;
  margin-top: 32px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.spec-table div {
  display: grid;
  grid-template-columns: 0.33fr 1fr;
  gap: 20px;
  padding: 18px;
  background: var(--surface);
}

.spec-table span {
  color: var(--muted);
}

.spec-table strong {
  line-height: 1.45;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, 420px);
  gap: 32px;
  align-items: center;
}

.contact h2 {
  max-width: 760px;
}

.contact-panel {
  display: grid;
  gap: 12px;
  padding: 20px;
}

.contact-link {
  display: flex;
  min-height: 56px;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  text-decoration: none;
}

.contact-link svg {
  flex: 0 0 auto;
  color: var(--teal);
}

.contact-link span {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 800;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 24px clamp(18px, 4vw, 56px);
  color: rgba(255, 255, 255, 0.75);
  background: var(--footer-bg);
}

.footer a {
  color: var(--white);
}

@media (max-width: 1050px) {
  .site-header {
    grid-template-columns: auto auto;
  }

  .nav {
    display: none;
  }

  .header-actions {
    justify-self: end;
  }

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

  .feature-story,
  .buyer-layout,
  .logistics,
  .contact {
    grid-template-columns: 1fr;
  }

  .buyer-images img,
  .logistics img {
    min-height: 0;
  }

}

@media (max-width: 430px) {
  .site-header {
    grid-template-columns: 1fr;
  }

  .header-actions {
    justify-self: start;
  }

  .hero-content {
    padding-top: 128px;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 8px 10px;
    gap: 8px;
  }

  .brand {
    gap: 8px;
  }

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

  .brand strong {
    font-size: 0.9rem;
  }

  .header-actions {
    gap: 4px;
  }

  .language-switch {
    width: 70px;
  }

  .theme-switch {
    width: 78px;
  }

  .language-button,
  .theme-button {
    min-height: 30px;
    padding: 0;
    font-size: 0.66rem;
  }

  .hero {
    min-height: 94vh;
  }

  .hero-background img {
    object-position: 42% center;
  }

  .hero-content {
    width: min(100% - 28px, 620px);
    padding-top: 96px;
    padding-bottom: 18px;
  }

  h1 {
    font-size: clamp(2.9rem, 13.5vw, 4.6rem);
  }

  .trust-band,
  .section-heading,
  .benefit-grid,
  .official-grid,
  .product-grid,
  .buyer-images,
  .spec-table div {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    font-size: 1rem;
    line-height: 1.42;
  }

  .hero-actions {
    margin-top: 16px;
  }

  .hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 18px;
  }

  .hero-stats div {
    min-height: 74px;
    padding: 10px;
  }

  .hero-stats dt {
    font-size: 0.92rem;
  }

  .hero-stats dd {
    font-size: 0.72rem;
    line-height: 1.25;
  }

  .feature-story,
  .logistics > div {
    padding-left: 18px;
    padding-right: 18px;
  }

  .product-card {
    grid-template-rows: 210px auto;
  }

  .product-image {
    min-height: 210px;
  }

  .product-image img {
    width: min(100%, 220px);
    max-height: 190px;
  }

  .buyer-images img,
  .logistics img {
    min-height: 0;
  }
}