:root {
  --background: #f9f2ec;
  --foreground: #121211;
  --orange: #e9481a;
  --orange-deep: #bd3312;
  --gray: #c8bcb5;
  --cream: #f9f2ec;
  --paper: #fffaf6;
  --ink-soft: #5d5651;
  --line: rgba(18, 18, 17, 0.13);
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-sans-local);
  --font-mono: var(--font-mono-local);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family:
    "OPPOSans", "Inter", "Helvetica Neue", Arial, "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

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

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

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid rgba(233, 72, 26, 0.14);
  color: var(--foreground);
  background: rgba(249, 242, 236, 0.82);
  backdrop-filter: blur(18px);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.brand-mark img {
  width: 98px;
  height: auto;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2.2vw, 28px);
  font-size: 13px;
  font-weight: 700;
}

.site-header nav a {
  opacity: 0.86;
}

.site-header nav a:hover {
  opacity: 1;
}

/* Language switch toggle */
.lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 12px;
  border: 1px solid var(--orange);
  border-radius: 4px;
  color: var(--orange) !important;
  font-size: 12px;
  font-weight: 800;
  opacity: 1 !important;
  transition: background 0.2s ease, color 0.2s ease;
}

.lang-switch:hover {
  background: var(--orange);
  color: #ffffff !important;
}

.hero {
  position: relative;
  min-height: 94vh;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(255, 250, 246, 0.94), rgba(249, 242, 236, 0.7)),
    var(--cream);
  color: var(--foreground);
}

.hero-orange-block {
  position: absolute;
  inset: 0 0 0 auto;
  width: min(54vw, 760px);
  height: 100%;
  background:
    linear-gradient(135deg, rgba(255, 206, 74, 0.22), rgba(233, 72, 26, 0) 42%),
    var(--orange);
}

.hero-ring {
  position: absolute;
  z-index: 1;
  border: 2px solid rgba(233, 72, 26, 0.25);
  border-radius: 999px;
  pointer-events: none;
}

.hero-ring-one {
  width: 38vw;
  height: 38vw;
  min-width: 360px;
  min-height: 360px;
  left: -14vw;
  top: 18vh;
}

.hero-ring-two {
  width: 26vw;
  height: 26vw;
  min-width: 260px;
  min-height: 260px;
  right: 28vw;
  bottom: 11vh;
  border-color: rgba(255, 255, 255, 0.44);
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(420px, 1.08fr);
  gap: clamp(30px, 6vw, 96px);
  align-items: center;
  min-height: 82vh;
  padding: 118px clamp(20px, 7vw, 96px) 120px;
}

.hero-content {
  max-width: 720px;
}

.hero-visual {
  position: relative;
  min-height: 560px;
}

.visual-card {
  position: absolute;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 28px 80px rgba(91, 21, 6, 0.22);
}

.visual-card::before {
  content: "";
  position: absolute;
  inset: auto -14% -26% auto;
  width: 220px;
  height: 220px;
  border: 2px solid rgba(233, 72, 26, 0.18);
  border-radius: 999px;
}

.visual-card-brand {
  top: 26px;
  left: 0;
  z-index: 3;
  display: grid;
  gap: 10px;
  width: min(52%, 300px);
  padding: 22px;
  background: #ffffff;
}

.visual-card-brand img {
  width: 150px;
}

.visual-card-brand span,
.visual-card-palette p,
.visual-card-film p {
  color: var(--ink-soft);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.visual-card-brand strong {
  color: var(--orange);
  font-size: clamp(18px, 1.8vw, 26px);
  font-weight: 900;
  line-height: 1;
}

.visual-card-brand small,
.swatch-row small,
.visual-card-film .film-tags span {
  color: var(--ink-soft);
  font-size: 11px;
  font-weight: 800;
}

.visual-card-brand .film-tags span {
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid rgba(18, 18, 17, 0.12);
  border-radius: 4px;
  color: var(--ink-soft);
  font-weight: 700;
}

.visual-card-palette .film-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: 4px;
}

.visual-card-palette .film-tags span {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(18, 18, 17, 0.12);
  border-radius: 4px;
  font-size: 10px;
  color: var(--ink-soft);
  font-weight: 700;
}

.visual-card-palette {
  top: 110px;
  right: 0;
  z-index: 2;
  display: grid;
  gap: 10px;
  width: min(62%, 280px);
  padding: 22px clamp(18px, 2.5vw, 32px);
  background:
    linear-gradient(135deg, rgba(249, 242, 236, 0.82), rgba(255, 255, 255, 0.94)),
    #ffffff;
  transform: rotate(-2deg);
}

.swatch-row {
  display: grid;
  gap: 4px;
  align-items: start;
  padding-top: 8px;
  min-height: auto;
  border-top: 1px solid rgba(18, 18, 17, 0.1);
}

.swatch {
  display: block;
  width: 72px;
  height: 40px;
  border-radius: 999px;
}

.swatch-orange {
  background: var(--orange);
}

.swatch-gray {
  background: var(--gray);
}

.swatch-cream {
  border: 1px solid rgba(18, 18, 17, 0.12);
  background: var(--cream);
}

.swatch-row strong,
.visual-card-film strong {
  display: block;
  color: var(--foreground);
  font-size: clamp(14px, 1.3vw, 18px);
  font-weight: 900;
  line-height: 1.1;
}

.swatch-row small {
  font-size: 10px;
}

.visual-card-film {
  right: 6%;
  bottom: 16px;
  z-index: 4;
  display: grid;
  gap: 10px;
  width: min(60%, 270px);
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(233, 72, 26, 0.9), rgba(189, 51, 18, 0.86)),
    var(--orange);
  color: #ffffff;
  transform: rotate(2deg);
}

.visual-card-film::before {
  border-color: rgba(255, 255, 255, 0.24);
}

.visual-card-film p,
.visual-card-film strong,
.visual-card-film .film-tags span {
  color: #ffffff;
}

.film-roll {
  position: relative;
  width: min(86%, 280px);
  height: 60px;
  border: 1px solid rgba(255, 255, 255, 0.46);
  border-radius: 999px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.18)),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.1) 0 10px, rgba(255, 255, 255, 0.02) 10px 20px);
}

.film-roll::after {
  content: "";
  position: absolute;
  top: 10px;
  right: 12px;
  width: 66px;
  height: 66px;
  border: 12px solid rgba(18, 18, 17, 0.16);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
}

.film-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.visual-card-film .film-tags span {
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 999px;
  padding: 5px 8px;
  font-size: 10px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--orange);
  font-size: 12px;
  font-weight: 800;
  line-height: 1.4;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: rgba(233, 72, 26, 0.82);
}

.hero h1 {
  margin: 0;
  color: var(--orange);
  font-size: clamp(48px, 7vw, 110px);
  font-weight: 900;
  line-height: 0.92;
}

.hero-line {
  margin: 28px 0 0;
  max-width: 720px;
  color: var(--foreground);
  font-size: clamp(25px, 4vw, 56px);
  font-weight: 800;
  line-height: 1.02;
}

.hero-copy {
  margin: 24px 0 0;
  max-width: 610px;
  color: var(--ink-soft);
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.7;
}

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

.hero-actions a,
.partner a {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(18, 18, 17, 0.22);
  border-radius: 6px;
  padding: 0 20px;
  font-size: 14px;
  font-weight: 800;
}

.hero-actions a:first-child,
.partner a {
  border-color: var(--orange);
  background: var(--orange);
  color: #ffffff;
}

.hero-actions a:last-child {
  background: rgba(255, 255, 255, 0.56);
}

.hero-metrics {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1120px, calc(100% - 40px));
  margin: -82px auto 0;
  overflow: hidden;
  border: 1px solid rgba(233, 72, 26, 0.24);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 28px 80px rgba(91, 21, 6, 0.12);
  backdrop-filter: blur(18px);
}

.hero-metrics span {
  min-height: 76px;
  padding: 28px clamp(18px, 4vw, 56px);
  border-right: 1px solid rgba(233, 72, 26, 0.18);
  color: var(--foreground);
  font-size: clamp(13px, 1.5vw, 18px);
  font-weight: 800;
}

.hero-metrics span:last-child {
  border-right: 0;
}

section {
  padding: clamp(60px, 8vw, 100px) clamp(20px, 6vw, 88px);
}

.intro-band,
.identity {
  background: var(--paper);
}

.intro-band {
  background: var(--orange);
  color: #ffffff;
}

.intro-band .section-kicker,
.intro-band h2,
.intro-band .intro-copy p,
.intro-band .intro-copy p + p {
  color: #ffffff;
}

.intro-grid,
.split-heading,
.identity {
  display: grid;
  grid-template-columns: minmax(0, 0.45fr) minmax(0, 0.45fr);
  gap: clamp(34px, 5vw, 72px);
  align-items: center;
}

.split-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.split-right {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 20px;
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.product-tags span {
  padding: 6px 16px;
  background: rgba(233, 72, 26, 0.12);
  border: 1px solid rgba(233, 72, 26, 0.25);
  border-radius: 20px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

h2 {
  margin: 0;
  max-width: 850px;
  font-size: clamp(28px, 4.2vw, 60px);
  font-weight: 900;
  line-height: 1.12;
}

.h2-em {
  color: transparent;
  -webkit-text-stroke: 2px #ffffff;
  font-style: italic;
  font-size: 1.15em;
  line-height: 0.85;
}

.intro-band .h2-em {
  -webkit-text-stroke-color: #ffffff;
}

.intro-copy p,
.split-heading > p,
.identity-copy > p,
.partner p {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(16px, 1.55vw, 20px);
  line-height: 1.8;
}

.intro-copy p + p {
  margin-top: 22px;
  color: #2b2724;
  font-weight: 800;
}

.story-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: clamp(44px, 7vw, 86px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.story-pillars article {
  min-height: 160px;
  padding: clamp(16px, 2.5vw, 28px);
  background: #ffffff;
  color: var(--foreground);
}

.story-pillars span {
  color: var(--orange);
  font-size: 72px;
  font-weight: 900;
  line-height: 1;
}

.story-pillars h3 {
  margin: 14px 0 8px;
  font-size: 20px;
  font-weight: 900;
  line-height: 1.1;
}

.capability-row h3,
.product-card h3 {
  margin: 22px 0 10px;
  font-size: 24px;
  font-weight: 900;
  line-height: 1.1;
}

.story-pillars p,
.capability-row span,
.product-card span,
figure figcaption,
footer span {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.7;
}

.strength {
  background: #ffffff;
}

/* ==================== Quality System Section ==================== */
.quality-system {
  position: relative;
  background: var(--cream);
  overflow: hidden;
}

/* Background decorative circles - H&H auxiliary pattern */
.quality-system::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  border: 1.5px solid rgba(233, 72, 26, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.quality-system::after {
  content: "";
  position: absolute;
  bottom: -180px;
  left: -120px;
  width: 480px;
  height: 480px;
  border: 1.5px solid rgba(200, 188, 181, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

/* Heading - compressed, compact */
.quality-heading {
  position: relative;
  z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.quality-heading .section-kicker {
  margin-bottom: 12px;
  color: var(--orange);
}

.quality-heading h2 {
  margin: 0 0 14px;
  text-align: center;
  font-size: clamp(26px, 3.5vw, 44px);
  line-height: 1.1;
}

.quality-description {
  margin: 0 auto;
  max-width: 560px;
  color: var(--ink-soft);
  font-size: clamp(14px, 1.3vw, 16px);
  line-height: 1.65;
}

/* Certification Grid */
.certification-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: clamp(36px, 5vw, 56px);
  max-width: 1080px;
  margin-left: auto;
  margin-right: auto;
}

/* Certification Card - premium brand module */
.cert-card {
  position: relative;
  padding: 0 0 28px;
  background: #ffffff;
  border: 1px solid rgba(200, 188, 181, 0.35);
  border-radius: 10px;
  text-align: center;
  box-shadow: 0 2px 16px rgba(91, 21, 6, 0.05);
  overflow: hidden;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              box-shadow 0.3s ease,
              border-color 0.3s ease;
  cursor: pointer;
}

/* Orange top line - H&H brand identity */
.cert-top-line {
  width: 100%;
  height: 4px;
  background: var(--orange);
}

/* Certified badge dot - top right */
.cert-badge-dot {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(233, 72, 26, 0.08);
  color: var(--orange);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cert-badge-dot::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* Certificate thumbnail - smaller, refined */
.cert-image {
  margin: 24px auto 20px;
  width: clamp(120px, 14vw, 160px);
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid rgba(200, 188, 181, 0.25);
  box-shadow: 0 2px 12px rgba(91, 21, 6, 0.08);
}

.cert-image img {
  width: 100%;
  height: clamp(160px, 18vw, 210px);
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cert-card:hover .cert-image img {
  transform: scale(1.05);
}

.cert-card h3 {
  margin: 0 0 8px;
  padding: 0 20px;
  color: var(--foreground);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.cert-card p {
  margin: 0;
  padding: 0 20px;
  color: var(--ink-soft);
  font-size: clamp(12px, 1vw, 14px);
  line-height: 1.5;
  font-weight: 500;
}

/* Hover state */
.cert-card:hover {
  transform: translateY(-6px);
  border-color: var(--orange);
  box-shadow: 0 12px 40px rgba(233, 72, 26, 0.12);
}

/* Pill Bar - standards participation */
.quality-pill-bar {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  max-width: 760px;
  margin: clamp(36px, 5vw, 52px) auto 0;
  padding: 16px 28px;
  background: rgba(233, 72, 26, 0.06);
  border: 1px solid rgba(233, 72, 26, 0.15);
  border-radius: 999px;
}

.quality-pill-bar p {
  margin: 0;
  color: var(--ink-soft);
  font-size: clamp(12px, 1vw, 14px);
  line-height: 1.5;
  font-weight: 600;
  text-align: center;
}

.pill-icon {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(233, 72, 26, 0.15);
}

/* ==================== End Quality System Section ==================== */

.strength-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(22px, 4vw, 54px);
  align-items: stretch;
  margin-top: clamp(42px, 6vw, 78px);
}

.strength-layout > img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.stat-grid article {
  padding: clamp(16px, 2.5vw, 28px);
  background: var(--cream);
}

.stat-grid strong {
  display: block;
  color: var(--orange);
  font-size: clamp(34px, 5vw, 64px);
  font-weight: 900;
  line-height: 0.95;
}

.stat-grid span,
.stat-grid small {
  display: block;
}

.stat-grid span {
  margin-top: 16px;
  font-size: 17px;
  font-weight: 900;
  line-height: 1.25;
}

.stat-grid small {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.capability-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.capability-row article,
.product-card,
.application-grid figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.capability-row img,
.product-card img,
.application-grid img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.capability-row div,
.product-body {
  padding: 22px;
}

.capability-row p,
.product-body p {
  margin: 0;
  color: var(--orange);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.products {
  position: relative;
  overflow: hidden;
  background: var(--paper);
  color: var(--foreground);
}

.products::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: min(46%, 520px);
  background:
    linear-gradient(135deg, rgba(255, 205, 74, 0.18), rgba(255, 255, 255, 0) 42%),
    var(--orange);
}

.products > * {
  position: relative;
  z-index: 1;
}

.products .section-kicker,
.products h2 {
  color: #ffffff;
}

.products .split-right p,
.products .product-card span,
.products .story-pillars p {
  color: rgba(255, 255, 255, 0.86);
}

.products .product-card span {
  color: var(--ink-soft);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
  margin-top: clamp(42px, 6vw, 76px);
}

.product-card {
  grid-column: span 2;
  border-color: rgba(233, 72, 26, 0.16);
  background: #ffffff;
  box-shadow: 0 18px 58px rgba(91, 21, 6, 0.12);
  will-change: transform;
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              border-color 0.3s ease;
  cursor: pointer;
}

.product-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: 0 28px 72px rgba(91, 21, 6, 0.22);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--orange);
}

.product-card:hover::after {
  opacity: 1;
}

.product-card img {
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.product-card:hover img {
  transform: scale(1.03);
}

.tag-row small {
  transition: color 0.25s ease, border-color 0.25s ease;
}

.product-series {
  margin-top: clamp(48px, 8vw, 80px);
  padding: clamp(32px, 5vw, 56px);
  background: #1a1a19;
  border-radius: 12px;
}

.product-series h3 {
  margin: 0 0 clamp(28px, 4vw, 40px);
  color: #ffffff;
  font-size: clamp(24px, 2.5vw, 36px);
  font-weight: 900;
  text-align: center;
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(20px, 3vw, 32px);
}

.series-item {
  padding: clamp(20px, 3vw, 32px);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
}

.series-item h4 {
  margin: 0 0 12px;
  color: var(--orange);
  font-size: clamp(16px, 1.4vw, 20px);
  font-weight: 800;
}

.series-item p {
  margin: 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: clamp(13px, 1.1vw, 15px);
  line-height: 1.6;
}

.product-cta {
  margin-top: clamp(40px, 6vw, 64px);
  padding: clamp(36px, 5vw, 56px);
  background: linear-gradient(135deg, rgba(233, 72, 26, 0.08), rgba(233, 72, 26, 0.02));
  border: 1px solid rgba(233, 72, 26, 0.15);
  border-radius: 12px;
  text-align: center;
}

.product-cta h3 {
  margin: 0 0 clamp(24px, 3vw, 32px);
  color: #121211;
  font-size: clamp(22px, 2.2vw, 32px);
  font-weight: 900;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.cta-buttons a {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.25s ease;
}

.btn-primary {
  background: var(--orange);
  color: #ffffff;
  border: 2px solid var(--orange);
}

.btn-primary:hover {
  background: #c93a15;
  border-color: #c93a15;
  transform: translateY(-2px);
}

.btn-secondary {
  background: transparent;
  color: var(--orange);
  border: 2px solid var(--orange);
}

.btn-secondary:hover {
  background: var(--orange);
  color: #ffffff;
  transform: translateY(-2px);
}

.product-card:hover .tag-row small {
  border-color: var(--orange);
  color: var(--orange);
}

.product-card:first-child,
.product-card:nth-child(2) {
  grid-column: span 3;
}

.product-body p {
  color: var(--orange);
}

.product-card span {
  color: var(--ink-soft);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.tag-row small {
  border: 1px solid rgba(233, 72, 26, 0.18);
  border-radius: 4px;
  padding: 6px 8px;
  color: #342b26;
  font-size: 12px;
}

.color-system {
  display: block;
  background: #1a1a19;
  padding-bottom: clamp(60px, 8vw, 100px);
}

.color-system-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(20px, 4vw, 48px);
  align-items: end;
  margin-bottom: clamp(42px, 6vw, 76px);
}

.color-system-heading .section-kicker {
  grid-column: 1 / -1;
}

.color-system .section-kicker {
  color: var(--orange);
}

.color-system-heading h2 {
  max-width: 900px;
  color: #ffffff;
  font-size: clamp(28px, 4vw, 56px);
  line-height: 1.1;
  grid-column: 1;
}

.color-system-heading p:last-child {
  grid-column: 1;
  margin: 0;
  max-width: 620px;
  color: rgba(255, 255, 255, 0.6);
  font-size: clamp(14px, 1.1vw, 17px);
  line-height: 1.7;
}

.color-board-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  grid-template-rows: auto auto auto;
  gap: clamp(20px, 3.5vw, 50px);
  align-items: start;
  max-width: 78%;
  margin: 0 auto;
}

.color-board {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  grid-template-rows: subgrid;
  grid-row: 1 / -1;
  gap: 0;
  border-radius: 8px;
  overflow: hidden;
  background: transparent;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.color-board header {
  grid-column: 1 / -1;
  padding: clamp(14px, 2vw, 28px) clamp(18px, 3vw, 36px);
  margin-bottom: 0;
  background: #2a2a28;
  text-align: left;
}

.color-board header h3 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(13px, 1vw, 18px);
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.color-board header span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.color-tile,
.material-tile {
  min-height: clamp(120px, 10vw, 180px);
  margin: 0;
  border: 0;
}

.color-tile {
  display: flex;
  align-items: flex-start;
  width: 100%;
  height: 100%;
  padding: clamp(16px, 2vw, 28px);
}

.color-tile strong {
  display: block;
  margin-bottom: 10px;
  font-size: clamp(16px, 1.4vw, 24px);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

.color-tile p {
  margin: 4px 0 0;
  font-size: clamp(9px, 0.65vw, 11px);
  line-height: 1.35;
  white-space: nowrap;
}

.material-tile {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.color-tile-orange {
  background: var(--orange);
  color: #ffffff;
}

.color-tile-gray {
  background: #606060;
  color: #ffffff;
}

.color-tile-white {
  background: #f9f2ec;
  color: #121211;
}

.color-tile-black {
  background: #000000;
  color: #ffffff;
}

.color-board-support {
}

.applications {
  background: #ffffff;
}

.application-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: clamp(42px, 6vw, 76px);
}

.application-grid figure {
  margin: 0;
}

.application-grid figcaption {
  padding: 14px 16px 16px;
  color: #332e29;
  font-weight: 900;
}

.materials-note {
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  color: var(--ink-soft);
  font-size: clamp(13px, 1.1vw, 15px);
  font-style: italic;
  text-align: center;
  line-height: 1.6;
}

.partner {
  display: block;
  background:
    linear-gradient(90deg, rgba(233, 72, 26, 0.94), rgba(233, 72, 26, 0.74)),
    url("assets/product-clear-ppf.jpg") center / cover;
  color: #ffffff;
}

.partner p {
  max-width: 780px;
  color: rgba(255, 255, 255, 0.88);
}

.partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.partner-tags span {
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 800;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

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

.partner-actions a {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 6px;
  padding: 0 28px;
  font-size: 14px;
  font-weight: 800;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
}

.partner-actions a:first-child {
  background: #ffffff;
  color: var(--orange);
  border-color: #ffffff;
}

.partner-actions a:hover {
  background: rgba(255, 255, 255, 0.9);
  color: var(--orange);
  border-color: #ffffff;
}

footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(20px, 6vw, 88px);
  border-top: 1px solid var(--line);
  background: var(--paper);
}

footer img {
  width: 120px;
}

footer div {
  display: grid;
  gap: 4px;
  text-align: right;
}

footer strong {
  font-size: 15px;
}

@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(34px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes color-block-in {
  from {
    transform: translateX(18%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes card-in-left {
  from {
    opacity: 0;
    transform: translateX(-26px) rotate(-5deg);
  }
  to {
    opacity: 1;
    transform: translateX(0) rotate(-2deg);
  }
}

@keyframes card-in-right {
  from {
    opacity: 0;
    transform: translateX(28px) rotate(5deg);
  }
  to {
    opacity: 1;
    transform: translateX(0) rotate(2deg);
  }
}

@keyframes soft-float {
  0%,
  100% {
    translate: 0 0;
  }
  50% {
    translate: 0 -10px;
  }
}

@keyframes ring-drift {
  0%,
  100% {
    transform: translate3d(0, 0, 0);
  }
  50% {
    transform: translate3d(18px, -14px, 0);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .hero-orange-block {
    animation: color-block-in 900ms cubic-bezier(0.18, 0.84, 0.26, 1) both;
  }

  .hero-content > * {
    animation: reveal-up 720ms cubic-bezier(0.18, 0.84, 0.26, 1) both;
  }

  .hero-content > *:nth-child(2) {
    animation-delay: 90ms;
  }

  .hero-content > *:nth-child(3) {
    animation-delay: 180ms;
  }

  .hero-content > *:nth-child(4) {
    animation-delay: 260ms;
  }

  .hero-content > *:nth-child(5) {
    animation-delay: 340ms;
  }

  .visual-card-brand {
    animation: reveal-up 780ms 180ms cubic-bezier(0.18, 0.84, 0.26, 1) both;
  }

  .visual-card-palette {
    animation:
      card-in-left 900ms 260ms cubic-bezier(0.18, 0.84, 0.26, 1) both,
      soft-float 7s 1.2s ease-in-out infinite;
  }

  .visual-card-film {
    animation:
      card-in-right 900ms 360ms cubic-bezier(0.18, 0.84, 0.26, 1) both,
      soft-float 6s 1.6s ease-in-out infinite;
  }

  .hero-ring {
    animation: ring-drift 9s ease-in-out infinite;
  }

  .story-pillars article,
  .capability-row article,
  .product-card,
  .color-system-heading,
  .color-board,
  .application-grid figure,
  .partner > * {
    animation: reveal-up both;
    animation-timeline: view();
    animation-range: entry 10% cover 30%;
  }
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    padding: 14px clamp(18px, 4vw, 32px);
  }

  .brand-mark span {
    display: none;
  }

  .brand-mark img {
    width: 82px;
  }

  .split-heading {
    grid-template-columns: 1fr;
    align-items: start;
    gap: 20px;
  }

  .product-tags {
    justify-content: flex-start;
  }

  .site-header nav {
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px 12px;
    font-size: 12px;
  }

  h2 {
    font-size: clamp(26px, 5vw, 44px);
  }

  .hero-orange-block {
    inset: auto 0 0 0;
    width: 100%;
    height: 46%;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-bottom: 104px;
  }

  .hero h1 {
    font-size: clamp(44px, 12vw, 72px);
  }

  .hero-line {
    font-size: clamp(20px, 4.5vw, 36px);
  }

  .hero-visual {
    min-height: 440px;
  }

  .hero-metrics,
  .intro-grid,
  .split-heading,
  .color-system-heading,
  .color-board-grid,
  .strength-layout,
  .partner {
    grid-template-columns: 1fr;
  }

  .color-board-grid {
    max-width: 100%;
  }

  .color-board {
    grid-template-rows: none;
    grid-row: auto;
  }

  .hero-metrics span {
    border-right: 0;
    border-bottom: 1px solid rgba(233, 72, 26, 0.16);
  }

  .hero-metrics span:last-child {
    border-bottom: 0;
  }

  .story-pillars,
  .capability-row,
  .application-grid {
    grid-template-columns: 1fr;
  }

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

  .product-card,
  .product-card:first-child,
  .product-card:nth-child(2) {
    grid-column: span 1;
  }

  .strength-layout > img {
    aspect-ratio: 16 / 9;
    object-fit: cover;
  }

  .certification-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .quality-system::before,
  .quality-system::after {
    width: 200px;
    height: 200px;
  }

  .quality-pill-bar {
    flex-direction: row;
    padding: 14px 20px;
  }

  section {
    padding: 50px clamp(18px, 4vw, 40px);
  }
}

/* ==================== 滚动动效系统 ==================== */

/* 减少动画偏好 */
.reduced-motion * {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
}

/* 导航栏滚动状态 */
.site-header.is-scrolled {
  background: rgba(249, 242, 236, 0.96);
  box-shadow: 0 2px 20px rgba(233, 72, 26, 0.08);
  border-bottom-color: rgba(233, 72, 26, 0.22);
}

/* Fade-up 元素初始状态 */
.fade-up-element {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.fade-up-element.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger 容器 */
.stagger-container {
  opacity: 1;
}

/* Stagger 子元素初始状态 */
.stagger-child {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.stagger-child.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* 图片 Scale-in 效果 - 调整为轻微效果 */
.scale-in-element {
  opacity: 0.85;
  transform: scale(0.98);
  transition: opacity 0.6s cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 0.61, 0.36, 1);
}

.scale-in-element.is-visible {
  opacity: 1;
  transform: scale(1);
}

/* 图片 Mask Reveal 效果 - 暂时注释以排查问题 */
/*
.application-grid img,
.product-card img {
  clip-path: inset(100% 0 0 0);
  transition: clip-path 0.7s cubic-bezier(0.65, 0, 0.35, 1);
}

.application-grid img.mask-revealed,
.product-card img.mask-revealed {
  clip-path: inset(0 0 0 0);
}
*/

/* Hero Parallax 性能优化 */
.hero-orange-block,
.hero-ring,
.visual-card {
  will-change: transform;
  backface-visibility: hidden;
}

/* 产品卡片悬停动画增强 */
.product-card {
  transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              border-color 0.3s ease,
              box-shadow 0.3s ease;
}

/* 应用场景图片悬停 */
.application-grid figure {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.application-grid figure:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(91, 21, 6, 0.15);
}

/* 数据卡片悬停 */
.stat-grid article {
  transition: background 0.25s ease;
}

.stat-grid article:hover {
  background: #ffffff;
}

/* 故事柱子悬停 */
.story-pillars article {
  transition: background 0.25s ease;
}

.story-pillars article:hover {
  background: rgba(255, 255, 255, 0.98);
}

/* 移除原有的 animation-timeline，改用 JS 控制 */
@media (prefers-reduced-motion: no-preference) {
  .story-pillars article,
  .capability-row article,
  .product-card,
  .color-system-heading,
  .color-board,
  .application-grid figure,
  .partner > * {
    animation: none;
  }
}

@media (max-width: 640px) {
  /* ── Header ── */
  .site-header {
    position: absolute;
    padding: 12px 16px;
    background: rgba(249, 242, 236, 0.92);
  }

  .site-header nav {
    max-width: none;
    flex: 1;
    justify-content: flex-end;
    gap: 5px 8px;
    font-size: 10px;
  }

  .lang-switch {
    font-size: 10px;
    padding: 3px 7px;
  }

  .brand-mark img {
    width: 68px;
  }

  .brand-mark span {
    display: none;
  }

  /* ── Hero ── */
  .hero {
    min-height: 88vh;
  }

  .hero-layout {
    padding: 86px 16px 80px;
  }

  .hero-visual {
    min-height: 340px;
  }

  .hero h1 {
    font-size: clamp(38px, 12vw, 56px);
    line-height: 0.95;
  }

  .hero-line {
    font-size: clamp(18px, 4vw, 26px);
    margin-top: 18px;
  }

  .hero-copy {
    font-size: 14px;
    line-height: 1.65;
    margin-top: 16px;
  }

  .hero-actions {
    gap: 10px;
    margin-top: 22px;
  }

  .hero-actions a {
    width: 100%;
    font-size: 13px;
  }

  .hero-metrics span {
    min-height: 56px;
    padding: 16px 18px;
    font-size: 12px;
    border-right: 0;
    border-bottom: 1px solid rgba(233, 72, 26, 0.16);
  }

  .hero-metrics span:last-child {
    border-bottom: 0;
  }

  .visual-card-brand {
    width: 56%;
    padding: 16px;
  }

  .visual-card-brand img {
    width: 96px;
  }

  .visual-card-brand strong {
    font-size: 18px;
  }

  .visual-card-palette {
    top: 90px;
    width: 84%;
    padding: 20px;
  }

  .visual-card-film {
    right: 0;
    width: 76%;
    padding: 18px;
  }

  /* ── Sections ── */
  section {
    padding: 50px 16px;
  }

  /* ── Intro Band / Brand Story ── */
  .intro-band h2 {
    font-size: clamp(22px, 6.5vw, 32px);
    line-height: 1.2;
  }

  .intro-band .h2-em {
    -webkit-text-stroke: 1px #ffffff;
    font-size: 1.1em;
  }

  .intro-copy p {
    font-size: 13px;
    line-height: 1.65;
  }

  .story-pillars {
    grid-gap: 1px;
    margin-top: 32px;
  }

  .story-pillars article {
    padding: 18px 16px;
    min-height: 120px;
  }

  .story-pillars span {
    font-size: 48px;
  }

  .story-pillars h3 {
    font-size: 17px;
    margin: 10px 0 6px;
  }

  .story-pillars p {
    font-size: 12px;
  }

  /* ── Strength ── */
  .strength-layout > img {
    aspect-ratio: 16 / 9;
  }

  .stat-grid article {
    padding: 18px;
  }

  .stat-grid strong {
    font-size: clamp(28px, 8vw, 44px);
  }

  .stat-grid span {
    font-size: 14px;
    margin-top: 10px;
  }

  .stat-grid small {
    font-size: 11px;
  }

  .capability-row img {
    aspect-ratio: 16 / 10;
  }

  .capability-row h3 {
    font-size: 18px;
  }

  .capability-row div {
    padding: 16px;
  }

  /* ── Quality System ── */
  .quality-heading h2 {
    font-size: clamp(22px, 6vw, 32px);
  }

  .quality-description {
    font-size: 13px;
  }

  .certification-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 32px;
  }

  .cert-card h3 {
    font-size: 20px;
  }

  .cert-card p {
    font-size: 12px;
  }

  .cert-image {
    width: clamp(100px, 30vw, 140px);
  }

  .cert-image img {
    height: clamp(130px, 36vw, 180px);
  }

  .cert-badge-dot {
    font-size: 9px;
    padding: 3px 8px;
  }

  .quality-pill-bar {
    flex-direction: row;
    padding: 12px 16px;
    margin-top: 28px;
    font-size: 12px;
  }

  .quality-system::before,
  .quality-system::after {
    width: 160px;
    height: 160px;
  }

  /* ── Products ── */
  .product-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-top: 32px;
  }

  .product-card {
    grid-column: span 1 !important;
  }

  .product-body {
    padding: 16px;
  }

  .product-card h3 {
    font-size: 18px;
    margin: 16px 0 8px;
  }

  .product-card span {
    font-size: 13px;
  }

  .product-series {
    padding: 28px 16px;
  }

  .product-series h3 {
    font-size: 20px;
  }

  .series-item {
    padding: 16px;
  }

  .series-item h4 {
    font-size: 15px;
  }

  .series-item p {
    font-size: 12px;
  }

  .product-cta {
    padding: 28px 16px;
  }

  .product-cta h3 {
    font-size: 18px;
  }

  .cta-buttons a {
    width: 100%;
    text-align: center;
    font-size: 13px;
  }

  /* ── Identity / Color ── */
  .color-board {
    grid-template-rows: none;
    grid-row: auto;
  }

  .color-board-grid {
    max-width: 100%;
  }

  .color-board header {
    margin-bottom: 12px;
    padding: 14px 16px;
  }

  .color-board header h3 {
    font-size: 16px;
  }

  .color-tile,
  .material-tile {
    min-height: 130px;
    padding: 16px;
  }

  .color-tile strong {
    font-size: clamp(16px, 3vw, 22px);
  }

  .color-tile p {
    font-size: 10px;
  }

  .color-system-heading h2 {
    font-size: clamp(22px, 6.5vw, 32px);
  }

  /* ── Brand in Action ── */
  .application-grid figure {
    margin: 0;
  }

  .application-grid figcaption {
    font-size: 13px;
    padding: 12px 14px;
  }

  .materials-note {
    font-size: 12px;
    margin-top: 24px;
  }

  /* ── Partner ── */
  .partner a {
    width: 100%;
  }

  .partner-tags span {
    font-size: 11px;
    padding: 6px 12px;
  }

  .partner-actions {
    flex-direction: column;
  }

  .partner-actions a {
    width: 100%;
  }

  /* ── Footer ── */
  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
    padding: 26px 16px;
  }

  footer img {
    width: 96px;
  }

  footer div {
    text-align: left;
  }

  footer strong {
    font-size: 13px;
  }

  footer span {
    font-size: 12px;
  }
}