:root {
  --ink: #101112;
  --muted: #60646c;
  --line: #e7e9ee;
  --paper: #ffffff;
  --soft: #f6f7f9;
  --coral: #ff5b4a;
  --teal: #08a99f;
  --lime: #c7ef42;
  --blue: #2868ff;
  --shadow: 0 18px 50px rgba(16, 17, 18, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

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

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(190px, 1fr) auto minmax(92px, 1fr);
  align-items: center;
  gap: 20px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.86);
  border-bottom: 1px solid rgba(16, 17, 18, 0.08);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-width: 0;
  gap: 10px;
}

.brand > span:last-child {
  min-width: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  display: block;
  flex: 0 0 auto;
  border-radius: 8px;
  filter: drop-shadow(0 8px 12px rgba(16, 17, 18, 0.16));
}

.brand strong {
  display: block;
  font-size: 15px;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.1;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(18px, 3vw, 34px);
  color: #34373d;
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.site-nav a:hover {
  border-color: var(--coral);
}

.language-switch {
  justify-self: end;
  display: inline-grid;
  grid-template-columns: repeat(2, 42px);
  height: 38px;
  padding: 3px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-switch button {
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  cursor: pointer;
}

.language-switch button.active {
  color: var(--paper);
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 92vh;
  padding: 120px clamp(20px, 6vw, 80px) 70px;
  overflow: hidden;
  display: flex;
  align-items: center;
  isolation: isolate;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center right;
}

.hero-scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(232, 255, 232, 0.9) 0%, rgba(238, 255, 242, 0.72) 42%, rgba(255, 255, 255, 0.22) 100%),
    radial-gradient(circle at 20% 72%, rgba(199, 239, 66, 0.28), transparent 34%);
}

.hero-content {
  width: min(680px, 100%);
  min-width: 0;
  max-width: 100%;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  margin: 0;
  max-width: 790px;
  font-size: clamp(46px, 8.5vw, 94px);
  line-height: 0.97;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero-copy {
  max-width: 620px;
  margin: 26px 0 0;
  color: #34373d;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
  max-width: 100%;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  max-width: 100%;
  min-width: 0;
  min-height: 50px;
  gap: 10px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 850;
}

.button span:first-child {
  flex: 0 0 auto;
  display: grid;
  width: 26px;
  height: 26px;
  place-items: center;
  border-radius: 6px;
}

.button span:last-child {
  min-width: 0;
  overflow-wrap: anywhere;
}

.button.primary {
  color: var(--paper);
  background: var(--ink);
  box-shadow: var(--shadow);
}

.button.primary span:first-child {
  background: var(--lime);
  color: var(--ink);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.78);
}

.button.secondary span:first-child {
  color: var(--paper);
  background: var(--coral);
}

.intro-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 22px clamp(20px, 6vw, 80px);
  background:
    linear-gradient(180deg, rgba(224, 255, 226, 0.96), rgba(255, 255, 255, 0.98)),
    var(--paper);
}

.intro-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 14px;
  min-height: 118px;
  align-content: center;
  padding: 24px;
  border: 1px solid rgba(16, 17, 18, 0.08);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 16px 36px rgba(16, 17, 18, 0.07);
  backdrop-filter: blur(14px);
}

.intro-item small {
  display: grid;
  grid-row: span 2;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: var(--ink);
  background: var(--lime);
  font-size: 13px;
  font-weight: 950;
}

.intro-item strong {
  align-self: end;
  font-size: clamp(21px, 2.2vw, 28px);
  line-height: 1.08;
}

.intro-item span {
  align-self: start;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.section {
  padding: clamp(72px, 9vw, 120px) clamp(20px, 6vw, 80px);
}

.section-heading {
  display: grid;
  gap: 18px;
  max-width: 950px;
}

.section-heading.compact {
  max-width: 720px;
}

.section h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(34px, 5vw, 62px);
  line-height: 1.08;
  letter-spacing: 0;
}

.about {
  background: var(--soft);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(28px, 5vw, 72px);
  margin-top: 42px;
}

.about-grid p {
  margin: 0;
  color: #353941;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.9;
}

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

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 38px;
}

.product-card {
  min-height: 270px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

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

.product-icon {
  display: block;
  width: min(132px, 72%);
  aspect-ratio: 1;
  margin: 0 0 24px;
  object-fit: contain;
  filter: drop-shadow(0 18px 22px rgba(16, 17, 18, 0.08));
}

.product-card h3 {
  margin: 0 0 14px;
  font-size: 23px;
  line-height: 1.2;
}

.product-card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.philosophy {
  background: #111213;
  color: var(--paper);
}

.philosophy .eyebrow {
  color: var(--lime);
}

.principles {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 42px;
  background: rgba(255, 255, 255, 0.22);
}

.principles div {
  min-height: 230px;
  padding: 26px;
  background: #111213;
}

.principles span {
  display: inline-block;
  margin-bottom: 34px;
  color: var(--lime);
  font-weight: 900;
}

.principles strong {
  display: block;
  font-size: 22px;
  line-height: 1.25;
}

.principles p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.75;
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 420px);
  gap: clamp(28px, 6vw, 90px);
  align-items: end;
  padding: clamp(72px, 9vw, 120px) clamp(20px, 6vw, 80px);
  background: var(--lime);
}

.contact-section .eyebrow {
  color: var(--ink);
}

.contact-card {
  display: grid;
  gap: 8px;
  padding: 24px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 10px 10px 0 var(--ink);
  font-style: normal;
}

.contact-card span {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.contact-card span:first-child {
  margin-top: 0;
}

.contact-card strong,
.contact-card a {
  overflow-wrap: anywhere;
  font-size: 20px;
  line-height: 1.3;
}

.contact-card small {
  color: var(--muted);
  font-size: 15px;
  font-weight: 800;
}

.contact-card a {
  color: var(--blue);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 24px clamp(20px, 6vw, 80px);
  background: var(--ink);
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
}

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

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-nav {
    display: none;
  }

  .hero {
    min-height: 86vh;
  }

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

  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    display: flex;
    justify-content: space-between;
    padding: 12px 14px;
    gap: 10px;
  }

  .language-switch {
    flex: 0 0 auto;
    justify-self: auto;
  }

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

  .brand strong {
    font-size: 14px;
  }

  .brand small {
    max-width: 122px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .language-switch {
    grid-template-columns: repeat(2, 38px);
    height: 36px;
  }

  .hero {
    min-height: 92vh;
    padding: 102px 30px 70px;
    align-items: flex-end;
  }

  .hero-image {
    object-position: 63% center;
  }

  .hero-scrim {
    background:
      linear-gradient(180deg, rgba(239, 255, 240, 0.5) 0%, rgba(237, 255, 240, 0.86) 44%, rgba(255, 255, 255, 0.88) 100%),
      radial-gradient(circle at 22% 68%, rgba(199, 239, 66, 0.26), transparent 32%);
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(36px, 11.2vw, 48px);
    line-height: 1.04;
    word-break: break-word;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .intro-band,
  .about-grid,
  .product-grid,
  .principles {
    grid-template-columns: 1fr;
  }

  .section h2,
  .contact-section h2 {
    font-size: clamp(31px, 10vw, 44px);
  }

  .product-card,
  .principles div {
    min-height: auto;
  }

  .contact-card {
    box-shadow: 6px 6px 0 var(--ink);
  }
}