:root {
  --cream: #f5eee3;
  --paper: #fffaf2;
  --paper-2: #fbf4e9;
  --ink: #3f231a;
  --muted: #795f55;
  --terra: #d9552d;
  --terra-dark: #ad3d1f;
  --line: rgba(63, 35, 26, 0.16);
  --line-soft: rgba(63, 35, 26, 0.09);
  --shadow: 0 24px 70px rgba(67, 42, 27, 0.12);
  --sans: "Inter", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--cream);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 72% 8%, color-mix(in srgb, var(--product-glow, #f4cf37) 18%, transparent), transparent 27rem),
    linear-gradient(180deg, var(--paper) 0, var(--cream) 58%, #f1e7d8 100%);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

[data-cn] {
  display: none;
}

html.lang-cn [data-en] {
  display: none !important;
}

html.lang-cn [data-cn] {
  display: revert;
}

html.cn [data-en] {
  display: none !important;
}

html.cn [data-cn] {
  display: revert;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  color: #fff;
  background: var(--ink);
  border-radius: 4px;
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: none;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--terra) 72%, #fff);
  outline-offset: 4px;
}

.site-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 82px;
  padding: 0 clamp(20px, 4vw, 64px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 250, 242, 0.82);
  backdrop-filter: blur(18px);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.4vw, 36px);
  font-size: 13px;
  font-weight: 600;
}

.header-nav a,
.footer-links a {
  text-decoration: none;
}

.header-nav a {
  position: relative;
  padding: 8px 0;
}

.header-nav a::after {
  position: absolute;
  right: 0;
  bottom: 3px;
  left: 0;
  height: 1px;
  background: var(--terra);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
}

.header-nav a:hover::after,
.header-nav a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-tools {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
}

.brand img {
  width: 50px;
  height: 50px;
  object-fit: contain;
}

.brand-copy {
  display: grid;
  line-height: 1;
}

.brand-copy strong {
  font-size: 17px;
  letter-spacing: 0.14em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.lang-switch {
  display: inline-flex;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.lang-switch button {
  min-width: 46px;
  padding: 8px 10px;
  border: 0;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
}

.lang-switch button[aria-pressed="true"] {
  color: #fff;
  background: var(--ink);
}

.sample-mini {
  padding: 9px 15px;
  color: #fff;
  background: var(--terra);
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.wrap {
  width: min(1180px, calc(100% - 44px));
  margin: 0 auto;
}

.breadcrumb {
  padding: 22px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb li:not(:last-child)::after {
  margin-left: 8px;
  color: rgba(63, 35, 26, 0.42);
  content: "/";
}

.breadcrumb a {
  text-underline-offset: 3px;
}

.product-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  gap: clamp(42px, 7vw, 100px);
  align-items: center;
  min-height: min(690px, calc(100vh - 82px));
  padding: clamp(52px, 7vw, 90px) 0 clamp(62px, 8vw, 108px);
}

.product-family {
  margin: 0 0 20px;
  color: var(--terra);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.product-hero h1 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(44px, 5.7vw, 78px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}

.title-rule {
  width: 50px;
  height: 3px;
  margin: 28px 0 24px;
  border: 0;
  background: var(--terra);
}

.hero-copy {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(16px, 1.35vw, 19px);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid var(--terra);
  border-radius: 4px;
  color: #fff;
  background: var(--terra);
  box-shadow: 0 12px 30px rgba(217, 85, 45, 0.18);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn::after {
  margin-left: 18px;
  content: "→";
}

.btn:hover {
  background: var(--terra-dark);
  box-shadow: 0 15px 35px rgba(217, 85, 45, 0.25);
  transform: translateY(-2px);
}

.btn-secondary {
  color: var(--ink);
  background: transparent;
  border-color: var(--line);
  box-shadow: none;
}

.btn-secondary:hover {
  color: #fff;
  background: var(--ink);
}

.hero-media {
  position: relative;
  isolation: isolate;
}

.hero-media::before {
  position: absolute;
  inset: 10% 7% 5%;
  z-index: -1;
  border-radius: 50%;
  background: color-mix(in srgb, var(--product-glow, #f4cf37) 34%, #fff);
  filter: blur(70px);
  content: "";
  opacity: 0.5;
}

.hero-photo {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1.35 / 1;
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 52% 48% 46% 54% / 55% 45% 55% 45%;
  background: rgba(255, 255, 255, 0.42);
  box-shadow: var(--shadow);
  transform: rotate(-1.2deg);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.02) rotate(1.2deg);
}

.hero-caption {
  display: flex;
  justify-content: flex-end;
  gap: 9px;
  align-items: center;
  margin: 16px 28px 0 0;
  color: var(--muted);
  font-size: 11px;
}

.hero-caption::before {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--product-glow, #f4cf37);
  box-shadow: 0 0 16px color-mix(in srgb, var(--product-glow, #f4cf37) 70%, transparent);
  content: "";
}

.anchor-bar {
  position: sticky;
  top: 0;
  z-index: 8;
  border-block: 1px solid var(--line);
  background: rgba(250, 243, 233, 0.91);
  backdrop-filter: blur(18px);
}

.anchor-bar .wrap {
  display: flex;
  gap: clamp(28px, 5vw, 72px);
  overflow-x: auto;
  scrollbar-width: none;
}

.anchor-bar .wrap::-webkit-scrollbar {
  display: none;
}

.anchor-bar a {
  flex: 0 0 auto;
  padding: 18px 0 16px;
  border-bottom: 2px solid transparent;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.anchor-bar a:first-child {
  color: var(--terra);
  border-color: var(--terra);
}

.section {
  padding: clamp(68px, 8vw, 112px) 0;
}

.section + .section {
  border-top: 1px solid var(--line-soft);
}

.section-heading {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: clamp(36px, 7vw, 100px);
  margin-bottom: 42px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(30px, 3.5vw, 48px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.section-heading p {
  max-width: 650px;
  margin: 2px 0 0;
  color: var(--muted);
}

.data-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(250px, 0.6fr);
  gap: clamp(38px, 7vw, 92px);
  align-items: start;
}

.data-table {
  margin: 0;
  border-top: 1px solid var(--ink);
}

.data-row {
  display: grid;
  grid-template-columns: minmax(165px, 0.7fr) minmax(0, 1.3fr);
  gap: 24px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.data-row dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.data-row dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
}

.proof-notes {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--ink);
}

.proof-note {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.proof-note span:first-child {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid color-mix(in srgb, var(--terra) 65%, transparent);
  border-radius: 50%;
  color: var(--terra);
  font-size: 11px;
  font-weight: 800;
}

.proof-note strong {
  display: block;
  font-size: 13px;
}

.proof-note p {
  margin: 3px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.disclaimer {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.application-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.application-item {
  margin: 0;
}

.application-item .media {
  overflow: hidden;
  aspect-ratio: 1.38 / 1;
  border-radius: 5px;
  background: #e8ddcf;
}

.application-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.application-item:hover img {
  transform: scale(1.035);
}

.application-item figcaption {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 2px 0;
  font-size: 13px;
  font-weight: 600;
}

.application-item figcaption small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.application-band {
  margin-top: 52px;
  padding: 28px 0;
  border-block: 1px solid var(--line);
}

.fact-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.fact {
  padding: 0 24px;
  border-left: 1px solid var(--line);
}

.fact:first-child {
  padding-left: 0;
  border-left: 0;
}

.fact small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
}

.fact strong {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  font-weight: 600;
}

.documents {
  background: rgba(255, 250, 242, 0.72);
}

.document-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.document-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 0 22px;
  border: 1px solid color-mix(in srgb, var(--terra) 54%, transparent);
  border-radius: 4px;
  color: var(--terra-dark);
  background: transparent;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}

.document-link::after {
  content: "↗";
}

.document-link:hover {
  color: #fff;
  background: var(--terra);
}

.document-note {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.sample-band {
  position: relative;
  overflow: hidden;
  padding: clamp(42px, 6vw, 72px) 0;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(63, 35, 26, 0.98), rgba(89, 43, 25, 0.91)),
    var(--product-glow, #f4cf37);
}

.sample-band::after {
  position: absolute;
  top: -100%;
  right: 5%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: var(--product-glow, #f4cf37);
  filter: blur(80px);
  content: "";
  opacity: 0.24;
}

.sample-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 42px;
  align-items: center;
}

.sample-inner h2 {
  margin: 0;
  font-size: clamp(31px, 4vw, 52px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}

.sample-inner p {
  max-width: 650px;
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.72);
}

.sample-band .btn {
  color: var(--ink);
  background: #fff5e7;
  border-color: #fff5e7;
  box-shadow: none;
}

.site-footer {
  padding: 48px 0 28px;
  background: #281812;
  color: rgba(255, 255, 255, 0.74);
}

.footer-main {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  width: 52px;
  height: 52px;
  object-fit: contain;
  filter: brightness(1.7);
}

.footer-brand strong {
  display: block;
  color: #fff;
  font-size: 17px;
  letter-spacing: 0.12em;
}

.footer-brand small {
  display: block;
  margin-top: 4px;
  font-size: 10px;
}

.footer-contact {
  font-size: 13px;
}

.footer-contact p {
  margin: 0 0 7px;
}

.footer-contact a {
  text-underline-offset: 3px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 24px;
  font-size: 12px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  font-size: 11px;
}

@media (max-width: 960px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-nav {
    display: none;
  }

  .brand {
    justify-self: start;
  }

  .product-hero {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .product-copy {
    max-width: 690px;
  }

  .hero-media {
    width: min(720px, 100%);
    margin: 0 auto;
  }

  .section-heading,
  .data-layout {
    grid-template-columns: 1fr;
  }

  .section-heading {
    gap: 18px;
  }

  .fact-strip {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 28px;
  }

  .fact:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .footer-main {
    grid-template-columns: 1fr 1fr;
  }

  .footer-links {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }
}

@media (max-width: 680px) {
  .site-header {
    min-height: 72px;
    padding: 0 16px;
  }

  .brand img {
    width: 43px;
    height: 43px;
  }

  .brand-copy {
    display: none;
  }

  .sample-mini {
    display: none;
  }

  .wrap {
    width: min(100% - 30px, 1180px);
  }

  .breadcrumb {
    padding-top: 16px;
  }

  .product-hero {
    gap: 38px;
    padding: 42px 0 58px;
  }

  .product-hero h1 {
    font-size: clamp(40px, 13vw, 57px);
  }

  .hero-photo {
    aspect-ratio: 1.15 / 1;
    border-radius: 40% 60% 48% 52% / 54% 45% 55% 46%;
  }

  .anchor-bar .wrap {
    gap: 24px;
  }

  .anchor-bar a {
    padding: 15px 0 13px;
  }

  .data-row {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .application-rail,
  .document-list {
    grid-template-columns: 1fr;
  }

  .fact-strip {
    grid-template-columns: 1fr;
  }

  .fact,
  .fact:first-child,
  .fact:nth-child(3) {
    padding: 0 0 18px;
    border-bottom: 1px solid var(--line);
    border-left: 0;
  }

  .sample-inner {
    grid-template-columns: 1fr;
  }

  .sample-inner .btn {
    justify-self: start;
  }

  .footer-main {
    grid-template-columns: 1fr;
  }

  .footer-links {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  .site-header,
  .anchor-bar,
  .sample-band,
  .site-footer,
  .hero-actions {
    display: none !important;
  }

  body {
    background: #fff;
  }

  .product-hero {
    min-height: 0;
    padding-block: 32px;
  }
}