@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/barlow-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Barlow";
  src: url("/assets/fonts/barlow-bold.woff2") format("woff2");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Noto Sans SC";
  src: url("/assets/fonts/noto-sans-sc-regular.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Noto Sans SC";
  src: url("/assets/fonts/noto-sans-sc-medium.woff2") format("woff2");
  font-style: normal;
  font-weight: 500 700;
  font-display: swap;
}

:root {
  --yf-color-bg-canvas: #061820;
  --yf-color-bg-surface: #0a2029;
  --yf-color-bg-surface-raised: #102d38;
  --yf-color-bg-subtle: #eaf0f2;
  --yf-color-bg-inverse: #041117;
  --yf-color-bg-brand-strong: #f97316;
  --yf-color-bg-brand-subtle: #3a2417;
  --yf-color-text-primary: #f5fafb;
  --yf-color-text-secondary: #bfd0d5;
  --yf-color-text-tertiary: #8fa7ae;
  --yf-color-text-disabled: #6d858c;
  --yf-color-text-inverse: #0d1113;
  --yf-color-text-brand: #ff8a35;
  --yf-color-text-on-brand: #0d1113;
  --yf-color-border-subtle: #183742;
  --yf-color-border-default: #31505a;
  --yf-color-border-strong: #6d858c;
  --yf-color-border-brand: #f97316;
  --yf-color-focus-ring: #67c7df;
  --yf-color-selection-bg: #f97316;
  --yf-color-status-info-bg: #153d4b;
  --yf-color-status-info-text: #d5f2fa;
  --yf-color-overlay-black-20: rgba(0, 0, 0, 0.2);
  --yf-color-overlay-black-42: rgba(0, 0, 0, 0.42);

  --yf-spacing-none: 0;
  --yf-spacing-2xs: 2px;
  --yf-spacing-xs: 4px;
  --yf-spacing-sm: 8px;
  --yf-spacing-md: 12px;
  --yf-spacing-lg: 16px;
  --yf-spacing-xl: 20px;
  --yf-spacing-2xl: 24px;
  --yf-spacing-3xl: 32px;
  --yf-spacing-4xl: 40px;
  --yf-spacing-5xl: 48px;
  --yf-spacing-6xl: 64px;
  --yf-spacing-7xl: 80px;
  --yf-spacing-8xl: 96px;
  --yf-spacing-9xl: 120px;

  --yf-radius-none: 0;
  --yf-radius-sm: 2px;
  --yf-radius-md: 4px;
  --yf-radius-lg: 6px;
  --yf-radius-xl: 8px;
  --yf-radius-2xl: 12px;
  --yf-radius-3xl: 16px;
  --yf-radius-4xl: 24px;
  --yf-radius-full: 9999px;

  --yf-font-size-2xs: 11px;
  --yf-font-size-xs: 12px;
  --yf-font-size-sm: 14px;
  --yf-font-size-md: 16px;
  --yf-font-size-lg: 18px;
  --yf-font-size-xl: 20px;
  --yf-font-size-2xl: 24px;
  --yf-font-size-3xl: 32px;
  --yf-font-size-4xl: 40px;
  --yf-font-size-6xl: 64px;

  --yf-size-icon-sm: 16px;
  --yf-size-icon-lg: 24px;
  --yf-size-icon-xl: 32px;

  --yf-size-control-large: 48px;
  --yf-border-width-default: 1px;
  --yf-border-width-strong: 2px;
  --yf-border-width-focus: 3px;
  --yf-shadow-low: 0 1px 2px var(--yf-color-overlay-black-20);
  --yf-shadow-medium: 0 12px 28px var(--yf-color-overlay-black-20);
  --yf-shadow-high: 0 24px 56px var(--yf-color-overlay-black-42);
  --yf-motion-fast: 120ms;
  --yf-motion-base: 180ms;
  --yf-ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --yf-layout-wide: 1440px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: var(--yf-spacing-none);
  min-width: 320px;
  color: var(--yf-color-text-primary);
  background: var(--yf-color-bg-canvas);
  font-family: "Noto Sans SC", "Noto Sans", sans-serif;
  font-size: var(--yf-font-size-md);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

::selection {
  color: var(--yf-color-text-on-brand);
  background: var(--yf-color-selection-bg);
}

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

.masthead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: var(--yf-border-width-default) solid var(--yf-color-border-default);
  background: var(--yf-color-bg-inverse) url("/assets/product-parameters-hero.webp") center / cover no-repeat;
}

.masthead::before {
  position: absolute;
  z-index: -1;
  content: "";
  pointer-events: none;
}

.masthead::before {
  inset: 0;
  background:
    linear-gradient(180deg, var(--yf-color-overlay-black-42), var(--yf-color-overlay-black-42)),
    linear-gradient(90deg, var(--yf-color-bg-inverse) 0%, var(--yf-color-bg-inverse) 40%, var(--yf-color-overlay-black-42) 68%, transparent 84%);
}

.masthead__inner,
.content,
.footer__inner {
  width: min(100%, var(--yf-layout-wide));
  margin-inline: auto;
  padding-inline: var(--yf-spacing-5xl);
}

.brandbar {
  display: flex;
  align-items: center;
  min-height: 144px;
}

.brandbar__logo {
  width: 190px;
  height: auto;
}

.hero__contact {
  display: flex;
  flex-wrap: wrap;
  column-gap: var(--yf-spacing-2xl);
  row-gap: var(--yf-spacing-sm);
  align-items: center;
  margin: var(--yf-spacing-xl) var(--yf-spacing-none) var(--yf-spacing-none);
  color: var(--yf-color-text-tertiary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-sm);
  font-style: normal;
  line-height: 1.35;
  text-align: left;
}

.hero__contact a {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--yf-spacing-sm);
  color: var(--yf-color-text-secondary);
  text-decoration: none;
  transition: color var(--yf-motion-fast) var(--yf-ease-standard);
}

.hero__contact svg {
  width: var(--yf-size-icon-lg);
  height: var(--yf-size-icon-lg);
  padding: var(--yf-spacing-xs);
  border: var(--yf-border-width-default) solid var(--yf-color-border-default);
  border-radius: var(--yf-radius-full);
  background: var(--yf-color-bg-brand-subtle);
  color: var(--yf-color-text-brand);
  flex: 0 0 auto;
}

.hero__contact a:hover,
.hero__contact a:focus-visible {
  color: var(--yf-color-text-brand);
}

.hero__contact span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(360px, 0.55fr);
  gap: var(--yf-spacing-7xl);
  align-items: end;
  padding-block: var(--yf-spacing-7xl) var(--yf-spacing-8xl);
}

.hero__aside {
  display: grid;
  gap: var(--yf-spacing-lg);
  align-self: end;
}

.hero__eyebrow,
.section-label,
.category-row th {
  font-size: var(--yf-font-size-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero__eyebrow {
  margin: var(--yf-spacing-none) var(--yf-spacing-none) var(--yf-spacing-md);
  color: var(--yf-color-text-brand);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
}

.hero h1 {
  margin: var(--yf-spacing-none);
  max-width: 860px;
  font-size: clamp(var(--yf-font-size-4xl), 5vw, var(--yf-font-size-6xl));
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hero h1 span {
  display: block;
  margin-top: var(--yf-spacing-sm);
  color: var(--yf-color-text-secondary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: 0.5em;
  letter-spacing: -0.01em;
}

.hero__copy {
  margin: var(--yf-spacing-2xl) var(--yf-spacing-none) var(--yf-spacing-none);
  max-width: 640px;
  color: var(--yf-color-text-secondary);
  font-size: var(--yf-font-size-lg);
  line-height: 1.55;
}

.hero__summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--yf-spacing-sm);
  margin: var(--yf-spacing-none);
}

.hero__summary div {
  min-width: 0;
  padding: var(--yf-spacing-lg) var(--yf-spacing-md);
  border: var(--yf-border-width-default) solid var(--yf-color-border-default);
  border-radius: var(--yf-radius-2xl);
  background: var(--yf-color-bg-surface);
  box-shadow: var(--yf-shadow-low);
}

.hero__summary dt {
  color: var(--yf-color-text-tertiary);
  font-size: var(--yf-font-size-2xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero__summary dd {
  margin: var(--yf-spacing-xs) var(--yf-spacing-none) var(--yf-spacing-none);
  color: var(--yf-color-text-primary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-2xl);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
  white-space: nowrap;
}

main {
  background: var(--yf-color-bg-canvas);
}

.content {
  padding-block: var(--yf-spacing-7xl) var(--yf-spacing-9xl);
}

.content-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
  gap: var(--yf-spacing-6xl);
  align-items: end;
  margin-bottom: var(--yf-spacing-5xl);
}

.section-label {
  margin: var(--yf-spacing-none) var(--yf-spacing-none) var(--yf-spacing-sm);
  color: var(--yf-color-text-brand);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
}

.content-intro h2 {
  margin: var(--yf-spacing-none);
  font-size: var(--yf-font-size-3xl);
  line-height: 1.25;
}

.content-intro p:last-child {
  margin: var(--yf-spacing-none);
  color: var(--yf-color-text-secondary);
  font-size: var(--yf-font-size-sm);
  line-height: 1.7;
}

.spec-group + .spec-group {
  margin-top: var(--yf-spacing-5xl);
}

.spec-group {
  overflow: hidden;
  border: var(--yf-border-width-default) solid var(--yf-color-border-default);
  border-radius: var(--yf-radius-3xl);
  background: var(--yf-color-bg-surface);
  box-shadow: var(--yf-shadow-medium);
}

.spec-group__topline {
  display: flex;
  align-items: center;
  gap: var(--yf-spacing-lg);
  min-height: 64px;
  padding: var(--yf-spacing-md) var(--yf-spacing-2xl);
  border-bottom: var(--yf-border-width-default) solid var(--yf-color-border-default);
  background: var(--yf-color-bg-inverse);
}

.spec-group__number {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: var(--yf-radius-full);
  color: var(--yf-color-text-on-brand);
  background: var(--yf-color-bg-brand-strong);
  font-family: "Barlow", sans-serif;
  font-size: var(--yf-font-size-sm);
  font-weight: 700;
}

.spec-group__topline h3 {
  margin: var(--yf-spacing-none);
  scroll-margin-top: var(--yf-spacing-2xl);
  font-size: var(--yf-font-size-lg);
  line-height: 1.35;
}

.spec-group__topline h3 span {
  margin-left: var(--yf-spacing-sm);
  color: var(--yf-color-text-tertiary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.table-scroll {
  overflow-x: auto;
  overscroll-behavior-inline: contain;
  scrollbar-color: var(--yf-color-border-strong) var(--yf-color-bg-surface);
}

.table-scroll:focus-visible {
  outline: var(--yf-border-width-focus) solid var(--yf-color-focus-ring);
  outline-offset: calc(var(--yf-border-width-focus) * -1);
}

table {
  width: 100%;
  min-width: 940px;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

col:first-child {
  width: 250px;
}

th,
td {
  padding: var(--yf-spacing-md) var(--yf-spacing-lg);
  border-right: var(--yf-border-width-default) solid var(--yf-color-border-subtle);
  border-bottom: var(--yf-border-width-default) solid var(--yf-color-border-subtle);
  vertical-align: middle;
  text-align: left;
  overflow-wrap: anywhere;
}

tr > :last-child {
  border-right: 0;
}

tbody tr:last-child > * {
  border-bottom: 0;
}

thead th {
  padding-block: var(--yf-spacing-xl);
  background: var(--yf-color-bg-surface-raised);
}

.model-label {
  color: var(--yf-color-text-tertiary);
  font-size: var(--yf-font-size-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.model {
  position: relative;
}

.model::before {
  position: absolute;
  top: 0;
  right: var(--yf-spacing-lg);
  left: var(--yf-spacing-lg);
  height: var(--yf-spacing-xs);
  border-radius: 0 0 var(--yf-radius-md) var(--yf-radius-md);
  background: var(--yf-color-bg-brand-strong);
  content: "";
}

.model strong {
  display: block;
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-3xl);
  line-height: 1;
}

.model span {
  display: block;
  margin-top: var(--yf-spacing-sm);
  color: var(--yf-color-text-tertiary);
  font-size: var(--yf-font-size-2xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.category-row th {
  padding-block: var(--yf-spacing-sm);
  color: var(--yf-color-text-brand);
  background: var(--yf-color-bg-brand-subtle);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
}

.category-row th span {
  margin-left: var(--yf-spacing-sm);
  color: var(--yf-color-text-secondary);
  letter-spacing: 0.06em;
}

.parameter {
  background: var(--yf-color-bg-surface);
  font-size: var(--yf-font-size-sm);
  font-weight: 500;
}

.parameter .zh {
  display: block;
  color: var(--yf-color-text-primary);
}

.parameter .en {
  display: block;
  margin-top: var(--yf-spacing-2xs);
  color: var(--yf-color-text-tertiary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-xs);
  font-weight: 400;
}

td {
  color: var(--yf-color-text-secondary);
  font-family: "Barlow", "Noto Sans SC", sans-serif;
  font-size: var(--yf-font-size-sm);
  line-height: 1.45;
}

.data-row:nth-child(odd) td {
  background: var(--yf-color-bg-surface-raised);
}

.value-main {
  display: block;
  color: var(--yf-color-text-primary);
  font-weight: 500;
}

.value-sub {
  display: block;
  margin-top: var(--yf-spacing-2xs);
  color: var(--yf-color-text-tertiary);
  font-size: var(--yf-font-size-xs);
}

.value-key {
  color: var(--yf-color-text-brand);
  font-size: var(--yf-font-size-lg);
  font-weight: 700;
  white-space: nowrap;
}

.status {
  display: inline-flex;
  min-width: 68px;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  padding-inline: var(--yf-spacing-md);
  border: var(--yf-border-width-default) solid var(--yf-color-border-default);
  border-radius: var(--yf-radius-full);
  font-size: var(--yf-font-size-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.status--yes {
  border-color: var(--yf-color-border-strong);
  color: var(--yf-color-status-info-text);
  background: var(--yf-color-status-info-bg);
}

.status--no {
  color: var(--yf-color-text-tertiary);
  background: var(--yf-color-bg-canvas);
}

.dash {
  color: var(--yf-color-text-disabled);
  font-size: var(--yf-font-size-lg);
}

.footer {
  border-top: var(--yf-border-width-default) solid var(--yf-color-border-subtle);
  background: var(--yf-color-bg-inverse);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: var(--yf-spacing-3xl);
  padding-block: var(--yf-spacing-4xl);
  color: var(--yf-color-text-tertiary);
  font-size: var(--yf-font-size-xs);
}

.footer__inner strong {
  color: var(--yf-color-text-secondary);
  font-family: "Barlow", sans-serif;
  letter-spacing: 0.08em;
}

@media (max-width: 1024px) {
  .masthead__inner,
  .content,
  .footer__inner {
    padding-inline: var(--yf-spacing-3xl);
  }

  .hero {
    gap: var(--yf-spacing-4xl);
  }

  .content-intro {
    gap: var(--yf-spacing-4xl);
  }
}

@media (max-width: 768px) {
  .brandbar {
    min-height: 76px;
  }

  .brandbar__logo {
    width: 154px;
  }

  .brandbar {
    align-items: flex-start;
    flex-direction: column;
    gap: var(--yf-spacing-md);
    padding-block: var(--yf-spacing-lg);
  }

  .hero__contact {
    align-items: flex-start;
    width: 100%;
    text-align: left;
  }

  .hero__contact a {
    justify-content: flex-start;
  }

  .hero,
  .content-intro {
    grid-template-columns: 1fr;
  }

  .hero {
    gap: var(--yf-spacing-4xl);
    padding-block: var(--yf-spacing-6xl);
  }

  .content {
    padding-block: var(--yf-spacing-6xl) var(--yf-spacing-8xl);
  }

  .content-intro {
    gap: var(--yf-spacing-xl);
    margin-bottom: var(--yf-spacing-3xl);
  }

  .spec-group + .spec-group {
    margin-top: var(--yf-spacing-3xl);
  }

  .footer__inner {
    flex-direction: column;
  }

  th:first-child,
  td:first-child {
    position: sticky;
    left: 0;
    z-index: 1;
    box-shadow: var(--yf-shadow-low);
  }

  thead th:first-child {
    z-index: 2;
  }
}

@media (max-width: 480px) {
  .masthead__inner,
  .content,
  .footer__inner {
    padding-inline: var(--yf-spacing-lg);
  }

  .hero h1 {
    font-size: var(--yf-font-size-4xl);
  }

  .hero__contact {
    font-size: var(--yf-font-size-xs);
  }

  .hero__contact a {
    gap: var(--yf-spacing-xs);
  }

  .hero__contact svg {
    width: var(--yf-size-icon-lg);
    height: var(--yf-size-icon-lg);
    padding: var(--yf-spacing-2xs);
  }

  .hero__copy {
    font-size: var(--yf-font-size-md);
  }

  .hero__summary {
    grid-template-columns: 1fr;
  }

  .hero__summary div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--yf-spacing-lg);
  }

  .hero__summary dd {
    margin-top: var(--yf-spacing-none);
  }

  .spec-group {
    margin-inline: calc(var(--yf-spacing-lg) * -1);
    border-right: 0;
    border-left: 0;
    border-radius: var(--yf-radius-none);
  }

  .spec-group__topline {
    padding-inline: var(--yf-spacing-lg);
  }

  .table-scroll {
    padding-bottom: var(--yf-spacing-sm);
  }

}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0ms !important;
    animation-duration: 0ms !important;
  }
}

@media print {
  @page {
    size: A3 portrait;
    margin: 12mm;
  }

  body,
  main {
    background: var(--yf-color-bg-canvas);
  }

  .masthead__inner,
  .content,
  .footer__inner {
    max-width: none;
    padding-inline: var(--yf-spacing-3xl);
  }

  .spec-group {
    break-inside: avoid;
    box-shadow: none;
  }

  .content {
    padding-block: var(--yf-spacing-5xl);
  }
}

html[lang="en"] body { font-family: "Barlow", "Noto Sans SC", "Noto Sans", sans-serif; }
.breadcrumbs { margin-bottom: var(--yf-spacing-3xl); color: var(--yf-color-text-secondary); }
.breadcrumbs a { display: inline-flex; align-items: center; min-height: var(--yf-size-control-large); color: inherit; text-underline-offset: var(--yf-spacing-xs); }
.brandbar { justify-content: space-between; gap: var(--yf-spacing-xl); }
.language-switch { display: flex; align-items: center; gap: var(--yf-spacing-xs); }
.language-switch a { display: inline-flex; align-items: center; justify-content: center; min-width: var(--yf-size-control-large); min-height: var(--yf-size-control-large); color: var(--yf-color-text-secondary); text-decoration: none; font-size: var(--yf-font-size-sm); }
.language-switch a:hover, .language-switch a[aria-current="page"] { color: var(--yf-color-text-primary); text-decoration: underline; text-underline-offset: var(--yf-spacing-xs); }