:root {
  --page: #0b0d10;
  --surface: #12151a;
  --surface-raised: #181c22;
  --surface-soft: #22272f;
  --text: #f2f4f7;
  --muted: #a7afb9;
  --quiet: #737c87;
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(255, 255, 255, 0.24);
  --accent: #2e73da;
  --accent-strong: #3d82ea;
  --accent-text: #ffffff;
  --accent-label: #8db9fb;
  --hero-accent: #8db9fb;
  --accent-soft: rgba(46, 115, 218, 0.12);
  --header-bg: rgba(9, 11, 14, 0.78);
  --header-solid: #0b0d10;
  --header-border: rgba(255, 255, 255, 0.12);
  --nav-text: #d6dbe2;
  --strong: #f8fafc;
  --control-bg: rgba(255, 255, 255, 0.05);
  --control-hover-bg: rgba(255, 255, 255, 0.08);
  --control-hover-border: rgba(255, 255, 255, 0.52);
  --mobile-nav-bg: rgba(9, 11, 14, 0.98);
  --hero-bg: #101318;
  --hero-title: #f8fafc;
  --hero-body: #d8dce2;
  --secondary-border: rgba(255, 255, 255, 0.45);
  --secondary-bg: rgba(8, 10, 13, 0.34);
  --secondary-hover-border: rgba(255, 255, 255, 0.8);
  --secondary-hover-bg: rgba(8, 10, 13, 0.58);
  --secondary-text: #ffffff;
  --tab-hover-bg: rgba(255, 255, 255, 0.04);
  --meta-text: #e7eaee;
  --link: #a7c9fb;
  --link-border: #78aefa;
  --link-hover: #f8fafc;
  --product-media: #dfe6ee;
  --caption: #c7cdd5;
  --media-tile: #171b21;
  --contact-bg: #0e1115;
  --contact-text: #e0e4e9;
  --proof-bg: transparent;
  --process-bg: transparent;
  --focus: #8db9fb;
  --max-width: 1320px;
  --header-height: 72px;
  color-scheme: dark;
}

html[data-theme="light"] {
  --page: #eaf5fc;
  --surface: #f8fcff;
  --surface-raised: #dceef9;
  --surface-soft: #cfe6f5;
  --text: #153049;
  --muted: #4b657b;
  --quiet: #607b91;
  --line: rgba(24, 93, 142, 0.16);
  --line-strong: rgba(24, 93, 142, 0.29);
  --accent: #2e73da;
  --accent-strong: #1f63c4;
  --accent-label: #245fae;
  --accent-soft: rgba(59, 149, 211, 0.15);
  --header-bg: rgba(242, 249, 254, 0.9);
  --header-solid: #f3faff;
  --header-border: rgba(24, 93, 142, 0.15);
  --nav-text: #294b65;
  --strong: #122a40;
  --control-bg: rgba(74, 165, 225, 0.1);
  --control-hover-bg: rgba(74, 165, 225, 0.17);
  --control-hover-border: rgba(35, 112, 169, 0.46);
  --mobile-nav-bg: rgba(242, 249, 254, 0.98);
  --hero-bg: #e7f4fc;
  --hero-title: #12304a;
  --hero-body: #3e5c73;
  --hero-accent: #1d67ad;
  --secondary-border: rgba(31, 101, 154, 0.4);
  --secondary-bg: rgba(249, 253, 255, 0.72);
  --secondary-hover-border: rgba(31, 101, 154, 0.68);
  --secondary-hover-bg: rgba(255, 255, 255, 0.92);
  --secondary-text: #153049;
  --tab-hover-bg: rgba(56, 146, 205, 0.08);
  --meta-text: #2e506b;
  --link: #1f65aa;
  --link-border: #5a97ca;
  --link-hover: #154e80;
  --product-media: #d9edf9;
  --caption: #42637b;
  --media-tile: #d0e8f7;
  --contact-bg: #dceef9;
  --contact-text: #244862;
  --proof-bg: #e2f1fb;
  --process-bg: #eef8fe;
  --focus: #1f65aa;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background: var(--page);
  color: var(--text);
  font-family: "Aptos", "Segoe UI Variable Text", "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  transition: background-color 220ms ease, color 220ms ease;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
}

button {
  color: inherit;
}

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

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

h1,
h2,
h3,
p,
figure,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3,
.proof-item strong,
.product-formula {
  font-family: "Aptos Display", "Segoe UI Variable Display", "Segoe UI", Arial, sans-serif;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  line-height: 1.06;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 4px;
  background: var(--accent);
  color: var(--accent-text);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  min-height: var(--header-height);
  border-bottom: 1px solid var(--header-border);
  background: var(--header-bg);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
  transition: border-color 220ms ease, background-color 220ms ease;
}

.nav-shell {
  width: min(calc(100% - 48px), var(--max-width));
  height: var(--header-height);
  margin: 0 auto;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 36px;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  border-radius: 4px;
}

.brand-logo {
  width: 156px;
  height: auto;
}

.desktop-nav {
  justify-self: center;
  display: flex;
  align-items: center;
  gap: 30px;
  white-space: nowrap;
}

.desktop-nav a {
  position: relative;
  color: var(--nav-text);
  font-size: 14px;
  transition: color 180ms ease;
}

.desktop-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  background: var(--accent-strong);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.desktop-nav a:hover,
.desktop-nav a:focus-visible {
  color: var(--strong);
}

.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.desktop-nav a[aria-current="page"] {
  color: var(--strong);
}

.desktop-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.language-switch {
  display: inline-grid;
  grid-template-columns: repeat(3, auto);
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--control-bg);
}

.language-button {
  min-width: 35px;
  min-height: 28px;
  padding: 0 8px;
  border: 0;
  border-radius: 2px;
  background: transparent;
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
  cursor: pointer;
}

.language-button.is-active {
  background: var(--accent);
  color: var(--accent-text);
}

.language-button[data-language="zh"] {
  min-width: 46px;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--control-bg);
  color: var(--nav-text);
  cursor: pointer;
  transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--control-hover-border);
  background: var(--control-hover-bg);
  color: var(--strong);
}

.theme-toggle:active {
  transform: translateY(1px);
}

.theme-toggle-icon {
  width: 18px;
  height: 18px;
  border: 1.5px solid currentColor;
  border-radius: 50%;
  background: linear-gradient(90deg, currentColor 0 50%, transparent 50%);
  transform: rotate(0deg);
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

html[data-theme="light"] .theme-toggle-icon {
  transform: rotate(180deg);
}

.nav-contact {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  color: var(--strong);
  font-size: 13px;
  font-weight: 650;
  white-space: nowrap;
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.nav-contact:hover,
.nav-contact:focus-visible {
  border-color: var(--control-hover-border);
  background: var(--control-hover-bg);
}

.nav-contact:active,
.button:active,
.product-tab:active,
.language-button:active {
  transform: translateY(1px);
}

.menu-toggle {
  position: relative;
  width: 42px;
  height: 42px;
  display: none;
  place-items: center;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  position: absolute;
  width: 18px;
  height: 1px;
  background: var(--strong);
  transition: transform 180ms ease;
}

.menu-toggle span:first-child {
  transform: translateY(-4px);
}

.menu-toggle span:last-child {
  transform: translateY(4px);
}

.menu-toggle[aria-expanded="true"] span:first-child {
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:last-child {
  transform: rotate(-45deg);
}

.mobile-nav {
  width: 100%;
  height: calc(100dvh - var(--header-height));
  padding: 36px 24px;
  background: var(--mobile-nav-bg);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  font-size: 24px;
  font-weight: 650;
  line-height: 1.25;
}

.mobile-nav a[aria-current="page"] {
  color: var(--accent-label);
}

.hero {
  position: relative;
  min-height: 92dvh;
  isolation: isolate;
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 88px 24px 48px;
  background: var(--hero-bg);
}

.hero-image,
.hero-scrim {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  z-index: -3;
  object-fit: cover;
  object-position: center 54%;
  transition: opacity 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-image-light {
  opacity: 0;
}

html[data-theme="light"] .hero-image-dark {
  opacity: 0;
}

html[data-theme="light"] .hero-image-light {
  opacity: 1;
}

.hero-scrim {
  z-index: -2;
  background:
    linear-gradient(90deg, rgba(7, 9, 12, 0.91) 0%, rgba(7, 9, 12, 0.73) 40%, rgba(7, 9, 12, 0.16) 73%, rgba(7, 9, 12, 0.08) 100%),
    linear-gradient(0deg, rgba(7, 9, 12, 0.66) 0%, rgba(7, 9, 12, 0.04) 42%);
}

html[data-theme="light"] .hero-scrim {
  background:
    linear-gradient(90deg, rgba(235, 247, 253, 0.97) 0%, rgba(235, 247, 253, 0.86) 42%, rgba(235, 247, 253, 0.22) 72%, rgba(235, 247, 253, 0.04) 100%),
    linear-gradient(0deg, rgba(211, 234, 248, 0.58) 0%, rgba(235, 247, 253, 0.03) 46%);
}

.hero-content {
  width: 100%;
  max-width: var(--max-width);
  min-width: 0;
  margin: 0 auto;
  padding-top: 12px;
}

.hero-kicker,
.section-kicker {
  font-size: 14px;
  font-weight: 700;
}

.hero-kicker {
  color: var(--hero-accent);
  max-width: 520px;
  margin-bottom: 22px;
}

.section-kicker {
  color: var(--accent-label);
}

.hero h1 {
  max-width: 980px;
  color: var(--hero-title);
  font-size: 72px;
  font-weight: 720;
}

.hero h1 span {
  display: block;
}

.hero-summary {
  max-width: 610px;
  margin-top: 25px;
  color: var(--hero-body);
  font-size: 19px;
  line-height: 1.48;
}

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

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button-primary {
  background: var(--accent);
  color: var(--accent-text);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--accent-strong);
}

.button-secondary {
  border-color: var(--secondary-border);
  background: var(--secondary-bg);
  color: var(--secondary-text);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--secondary-hover-border);
  background: var(--secondary-hover-bg);
}

.proof-rail {
  width: min(calc(100% - 48px), var(--max-width));
  min-height: 128px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  background: var(--proof-bg);
}

.proof-item {
  min-width: 0;
  display: grid;
  align-content: center;
  gap: 7px;
  padding: 25px 26px;
  border-left: 1px solid var(--line);
}

.proof-item:last-child {
  border-right: 1px solid var(--line);
}

.proof-item strong {
  color: var(--strong);
  font-size: 31px;
  font-weight: 700;
  line-height: 1;
}

.proof-item span {
  max-width: 210px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

.section {
  padding: 132px 24px;
}

.section-inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 64px;
}

.section-heading .section-kicker {
  margin-bottom: 18px;
}

.section-heading h2,
.about-copy h2,
.contact-heading h2 {
  font-size: 52px;
  font-weight: 680;
}

.section-heading > p:last-child,
.about-copy > p:not(.section-kicker),
.contact-heading > p {
  max-width: 680px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.products-section {
  background: var(--page);
}

.product-explorer {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 42px;
  align-items: stretch;
}

.product-tabs {
  display: grid;
  align-content: start;
  border-top: 1px solid var(--line);
}

.product-tab {
  position: relative;
  min-height: 60px;
  padding: 13px 18px 13px 20px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  text-align: left;
  font-size: 14px;
  font-weight: 650;
  line-height: 1.3;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.product-tab::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--accent-strong);
  transform: scaleY(0);
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

.product-tab:hover,
.product-tab:focus-visible {
  color: var(--strong);
  background: var(--tab-hover-bg);
}

.product-tab.is-active {
  color: var(--strong);
  background: var(--accent-soft);
}

.product-tab.is-active::before {
  transform: scaleY(1);
}

.product-stage {
  min-height: 610px;
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(360px, 1.12fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.product-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 58px 48px;
}

.product-formula {
  margin-bottom: 20px;
  color: var(--accent-label);
  font-size: 22px;
  font-weight: 680;
}

.product-copy h3 {
  font-size: 40px;
  font-weight: 680;
}

.product-copy > p:not(.product-formula) {
  margin-top: 20px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.product-meta {
  display: grid;
  gap: 22px;
  margin-top: 36px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.product-meta div {
  display: grid;
  gap: 5px;
}

.product-meta dt {
  color: var(--quiet);
  font-size: 12px;
  font-weight: 700;
}

.product-meta dd {
  color: var(--meta-text);
  font-size: 14px;
}

.text-link {
  width: fit-content;
  margin-top: 34px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--link-border);
  color: var(--link);
  font-size: 14px;
  font-weight: 700;
  transition: color 180ms ease, border-color 180ms ease;
}

.text-link:hover,
.text-link:focus-visible {
  border-color: var(--link-hover);
  color: var(--link-hover);
}

.product-media {
  min-width: 0;
  display: grid;
  place-items: center;
  padding: 38px;
  background: var(--product-media);
}

.product-media img {
  width: 100%;
  height: 520px;
  object-fit: contain;
  mix-blend-mode: multiply;
  transition: opacity 160ms ease, transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

.product-media img.is-changing {
  opacity: 0;
  transform: scale(0.985);
}

.product-footer {
  display: flex;
  align-items: baseline;
  justify-content: flex-end;
  gap: 28px;
  margin-top: 24px;
}

.product-footer .text-link {
  flex: 0 0 auto;
  margin-top: 0;
}

.product-note {
  max-width: 760px;
  color: var(--quiet);
  font-size: 12px;
  text-align: right;
}

.capability-section {
  background: var(--surface);
}

.process-rail {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-bottom: 72px;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  background: var(--process-bg);
}

.process-rail article {
  min-height: 290px;
  padding: 32px 28px 36px;
  border-left: 1px solid var(--line);
}

.process-rail article:last-child {
  border-right: 1px solid var(--line);
}

.process-heading > span {
  display: block;
  margin-bottom: 62px;
  color: var(--accent-label);
  font-size: 13px;
  font-weight: 700;
}

.process-rail h3 {
  font-size: 25px;
  font-weight: 680;
}

.process-rail p {
  margin-top: 16px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.operations-mosaic {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 80px;
  gap: 18px;
}

.mosaic-item {
  min-width: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

.mosaic-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  filter: saturate(1.06) contrast(1.05) brightness(1.04);
  transition: filter 260ms ease, transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.mosaic-item:hover img {
  filter: saturate(1.12) contrast(1.05) brightness(1.05);
  transform: scale(1.01);
}

.mosaic-item figcaption {
  padding-top: 10px;
  color: var(--caption);
  font-size: 13px;
}

.mosaic-logistics {
  grid-column: 1 / span 7;
  grid-row: 1 / span 4;
}

.mosaic-storage {
  grid-column: 8 / span 5;
  grid-row: 1 / span 5;
}

.mosaic-storage img {
  object-position: center 52%;
  filter: saturate(1.02) contrast(1.02) brightness(1.01);
}

.mosaic-storage:hover img {
  filter: saturate(1.06) contrast(1.03) brightness(1.02);
}

.mosaic-port {
  grid-column: 1 / span 5;
  grid-row: 5 / span 5;
}

.mosaic-filling {
  grid-column: 6 / span 7;
  grid-row: 6 / span 4;
}

.facilities-section {
  background: var(--page);
}

.facility-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  grid-auto-rows: 80px;
  gap: 18px;
}

.facility-item {
  min-width: 0;
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
}

.facility-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  filter: saturate(1.1) contrast(1.06) brightness(1.07);
  transition: filter 260ms ease, transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.facility-item:hover img {
  filter: saturate(1.16) contrast(1.06) brightness(1.08);
  transform: scale(1.012);
}

.facility-item figcaption {
  padding-top: 11px;
  color: var(--caption);
  font-size: 13px;
}

.facility-safety {
  grid-column: 1 / span 7;
  grid-row: 1 / span 4;
}

.facility-safety img {
  object-position: center 34%;
}

.facility-filling {
  grid-column: 8 / span 5;
  grid-row: 1 / span 5;
}

.facility-filling img {
  object-position: center 52%;
}

.facility-storage {
  grid-column: 1 / span 5;
  grid-row: 5 / span 5;
}

.facility-storage img {
  object-position: center 55%;
  filter: saturate(1.14) contrast(1.05) brightness(1.08);
}

.facility-storage:hover img {
  filter: saturate(1.2) contrast(1.06) brightness(1.1);
}

.facility-transfer {
  grid-column: 6 / span 7;
  grid-row: 6 / span 4;
}

.facility-transfer img {
  object-position: center 62%;
}

.facility-tanks {
  grid-column: 1 / span 7;
  grid-row: 10 / span 5;
}

.facility-tanks img {
  object-position: center 67%;
}

.facility-tanker {
  grid-column: 8 / span 5;
  grid-row: 10 / span 5;
}

.facility-tanker img {
  object-position: 58% center;
}

.about-section {
  background: var(--surface);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(440px, 1.02fr) minmax(0, 0.98fr);
  gap: 72px;
  align-items: stretch;
}

.about-gallery {
  min-height: 0;
  display: grid;
  contain: size;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: repeat(12, minmax(0, 1fr));
  gap: 12px;
}

.about-shot {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--media-tile);
}

.about-shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.03);
  transition: filter 260ms ease, transform 360ms cubic-bezier(0.16, 1, 0.3, 1);
}

.about-shot:hover img {
  filter: saturate(1) contrast(1.02);
  transform: scale(1.018);
}

.about-shot::after {
  content: "";
  position: absolute;
  inset: 48% 0 0;
  background: linear-gradient(0deg, rgba(4, 6, 9, 0.82), transparent);
  pointer-events: none;
}

.about-shot figcaption {
  position: absolute;
  z-index: 1;
  right: 14px;
  bottom: 12px;
  left: 14px;
  color: #f5f7fa;
  font-size: 12px;
  line-height: 1.35;
}

.about-office {
  grid-column: 1 / -1;
  grid-row: 1 / span 3;
}

.about-office img {
  object-position: 50% 35%;
}

.about-laboratory {
  grid-column: 1 / -1;
  grid-row: 4 / span 3;
}

.about-laboratory img {
  object-position: center 58%;
}

.about-workspace {
  grid-column: 1 / -1;
  grid-row: 7 / span 3;
}

.about-workspace img {
  object-position: center 72%;
}

.about-products {
  grid-column: 1 / -1;
  grid-row: 10 / span 3;
}

.about-copy .section-kicker {
  margin-bottom: 18px;
}

.about-copy > p:not(.section-kicker) {
  white-space: pre-line;
}

.value-list {
  margin-top: 46px;
  border-top: 1px solid var(--line-strong);
}

.value-list > div {
  display: grid;
  grid-template-columns: minmax(180px, 0.4fr) minmax(0, 0.6fr);
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.value-list strong {
  font-size: 15px;
}

.value-list span {
  color: var(--muted);
  font-size: 14px;
}

.contact-section {
  padding: 118px 24px;
  border-top: 1px solid var(--line);
  background: var(--contact-bg);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 100px;
  align-items: start;
}

.contact-heading .button {
  margin-top: 34px;
}

.social-links {
  margin-top: 34px;
}

.social-links-title {
  color: var(--contact-text);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.social-links-grid {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: clamp(5px, 1.2vw, 12px);
  margin-top: 14px;
  max-width: 100%;
}

.social-links-grid a {
  width: clamp(24px, 2.5vw, 32px);
  height: clamp(24px, 2.5vw, 32px);
  flex: 0 0 clamp(24px, 2.5vw, 32px);
  display: grid;
  place-items: center;
  min-width: 0;
  padding: 0;
  border-radius: 7px;
  overflow: hidden;
  color: var(--contact-text);
  transition: color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.social-links-grid a:hover,
.social-links-grid a:focus-visible {
  color: var(--accent-label);
  transform: translateY(-2px);
  box-shadow: 0 5px 14px rgb(0 0 0 / 18%);
}

.social-links-grid img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  border-radius: inherit;
  background: #fff;
}

/* Keep the icon row compact on narrow screens while preserving one-line layout. */
@media (max-width: 420px) {
  .social-links-grid {
    gap: 5px;
  }

  .social-links-grid a {
    width: 25px;
    height: 25px;
    flex-basis: 25px;
  }
}

.contact-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px 26px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  font-style: normal;
}

.contact-details div {
  min-width: 0;
  display: grid;
  align-content: start;
  gap: 6px;
}

.contact-details span {
  color: var(--quiet);
  font-size: 12px;
  font-weight: 700;
}

.contact-details a,
.contact-details p {
  color: var(--contact-text);
  font-size: 14px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.contact-details a:hover,
.contact-details a:focus-visible {
  color: var(--accent-label);
}

.site-footer {
  padding: 30px 24px;
  border-top: 1px solid var(--line);
  background: var(--page);
}

.products-section,
.proof-rail,
.capability-section,
.process-rail,
.facilities-section,
.about-section,
.contact-section,
.contact-details,
.product-stage,
.site-footer,
.mobile-nav {
  transition: border-color 220ms ease, background-color 220ms ease, color 220ms ease;
}

.footer-inner {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 13px;
}

.footer-logo {
  width: 172px;
  height: auto;
  flex: 0 0 auto;
  border-radius: 4px;
}

.footer-brand p {
  display: grid;
  gap: 1px;
}

.footer-brand strong {
  font-size: 13px;
}

.footer-brand span,
.footer-note {
  color: var(--quiet);
  font-size: 11px;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

.js .reveal {
  opacity: 0;
  transform: translateY(26px);
}

.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: no-preference) {
  .hero-kicker,
  .hero h1,
  .hero-summary,
  .hero-actions {
    opacity: 0;
    animation: hero-enter 760ms cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  .hero h1 {
    animation-delay: 90ms;
  }

  .hero-summary {
    animation-delay: 180ms;
  }

  .hero-actions {
    animation-delay: 270ms;
  }

  .js .reveal {
    transition: opacity 620ms ease, transform 620ms cubic-bezier(0.16, 1, 0.3, 1);
  }

  @keyframes hero-enter {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header,
  .button-secondary {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .site-header {
    background: var(--header-solid);
  }
}

@media (max-width: 1120px) {
  .desktop-nav {
    gap: 20px;
  }

  .nav-shell {
    gap: 22px;
  }

  .hero h1 {
    max-width: 820px;
    font-size: 62px;
  }

  .product-explorer {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 28px;
  }

  .product-stage {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 0.92fr);
  }

  .product-copy {
    padding: 44px 36px;
  }

  .about-layout,
  .contact-layout {
    gap: 60px;
  }
}

@media (max-width: 960px) {
  .desktop-nav,
  .nav-contact {
    display: none;
  }

  .nav-shell {
    grid-template-columns: 1fr auto;
  }

  .menu-toggle {
    display: grid;
  }

  .hero h1 {
    font-size: 54px;
  }

  .proof-rail {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-item:nth-child(3),
  .proof-item:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .proof-item:nth-child(2) {
    border-right: 1px solid var(--line);
  }

  .section {
    padding-top: 104px;
    padding-bottom: 104px;
  }

  .section-heading h2,
  .about-copy h2,
  .contact-heading h2 {
    font-size: 44px;
  }

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

  .product-tabs {
    display: flex;
    overflow-x: auto;
    border-top: 0;
    border-bottom: 1px solid var(--line);
    scrollbar-width: thin;
  }

  .product-tab {
    min-width: max-content;
    min-height: 48px;
    padding: 10px 15px;
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .product-tab::before {
    top: auto;
    right: 0;
    bottom: 0;
    width: auto;
    height: 3px;
    transform: scaleX(0);
  }

  .product-tab.is-active::before {
    transform: scaleX(1);
  }

  .process-rail {
    grid-template-columns: repeat(2, 1fr);
  }

  .process-rail article:nth-child(3),
  .process-rail article:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .process-rail article:nth-child(2) {
    border-right: 1px solid var(--line);
  }

  .operations-mosaic {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
  }

  .mosaic-logistics,
  .mosaic-storage,
  .mosaic-port,
  .mosaic-filling {
    grid-column: auto;
    grid-row: auto;
  }

  .mosaic-item img {
    aspect-ratio: 4 / 3;
  }

  .facility-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: auto;
  }

  .facility-safety,
  .facility-filling,
  .facility-storage,
  .facility-transfer,
  .facility-tanks,
  .facility-tanker {
    grid-column: auto;
    grid-row: auto;
  }

  .facility-item img {
    aspect-ratio: 4 / 3;
  }

  .about-layout,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .about-gallery {
    min-height: 620px;
    contain: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, minmax(0, 1fr));
  }

  .about-office,
  .about-laboratory,
  .about-workspace,
  .about-products {
    grid-column: auto;
    grid-row: auto;
  }

  .contact-details {
    max-width: 720px;
  }
}

@media (max-width: 767px) {
  :root {
    --header-height: 66px;
  }

  .nav-shell,
  .proof-rail {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .nav-shell {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
  }

  .nav-actions {
    min-width: 0;
  }

  .language-switch {
    margin-left: auto;
  }

  .hero {
    min-height: 88dvh;
    align-items: end;
    padding: 82px 16px 54px;
  }

  .hero-image {
    object-position: 61% center;
  }

  .hero-scrim {
    background:
      linear-gradient(90deg, rgba(7, 9, 12, 0.84) 0%, rgba(7, 9, 12, 0.45) 100%),
      linear-gradient(0deg, rgba(7, 9, 12, 0.94) 0%, rgba(7, 9, 12, 0.28) 70%);
  }

  html[data-theme="light"] .hero-scrim {
    background:
      linear-gradient(90deg, rgba(235, 247, 253, 0.78) 0%, rgba(235, 247, 253, 0.22) 100%),
      linear-gradient(0deg, rgba(235, 247, 253, 0.98) 0%, rgba(235, 247, 253, 0.78) 57%, rgba(235, 247, 253, 0.08) 100%);
  }

  .hero-kicker {
    margin-bottom: 17px;
    font-size: 12px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-summary {
    max-width: 460px;
    margin-top: 18px;
    font-size: 16px;
  }

  .hero-actions {
    margin-top: 26px;
  }

  .proof-item {
    min-height: 112px;
    padding: 20px 17px;
  }

  .proof-item strong {
    font-size: 26px;
  }

  .proof-item span {
    font-size: 11px;
  }

  .section {
    padding: 82px 16px;
  }

  .section-heading {
    margin-bottom: 44px;
  }

  .section-heading h2,
  .about-copy h2,
  .contact-heading h2 {
    font-size: 36px;
  }

  .section-heading > p:last-child,
  .about-copy > p:not(.section-kicker),
  .contact-heading > p {
    margin-top: 17px;
    font-size: 16px;
  }

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

  .product-copy {
    padding: 36px 24px;
  }

  .product-copy h3 {
    font-size: 34px;
  }

  .product-media {
    min-height: 390px;
    padding: 24px;
    grid-row: 1;
  }

  .product-media img {
    height: 340px;
  }

  .product-note {
    text-align: left;
  }

  .product-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .process-rail {
    grid-template-columns: 1fr;
  }

  .process-rail article,
  .process-rail article:nth-child(2),
  .process-rail article:last-child {
    min-height: 0;
    padding: 20px 18px 22px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .process-rail article:not(:first-child) {
    border-top: 0;
  }

  .process-heading {
    display: flex;
    align-items: baseline;
    gap: 14px;
    margin-bottom: 10px;
  }

  .process-heading > span {
    margin-bottom: 0;
  }

  .process-rail h3 {
    font-size: 22px;
  }

  .process-rail p {
    margin-top: 0;
  }

  .operations-mosaic {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .facility-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .facility-safety,
  .facility-filling,
  .facility-storage,
  .facility-transfer,
  .facility-tanks,
  .facility-tanker {
    grid-column: 1;
    grid-row: auto;
    margin-top: 0;
    padding-top: 0;
  }

  .facility-item img,
  .facility-safety img,
  .facility-filling img,
  .facility-storage img,
  .facility-transfer img,
  .facility-tanks img,
  .facility-tanker img {
    aspect-ratio: 4 / 3;
  }

  .about-layout {
    gap: 48px;
  }

  .about-gallery {
    min-height: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(2, 160px);
    gap: 10px;
  }

  .about-office,
  .about-laboratory,
  .about-workspace,
  .about-products {
    grid-column: auto;
    grid-row: auto;
  }

  .value-list > div {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .contact-section {
    padding: 82px 16px;
  }

  .contact-layout {
    gap: 52px;
  }

  .contact-details {
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 430px) {
  .brand-logo {
    width: 112px;
  }

  .nav-actions {
    gap: 8px;
  }

  .language-button {
    min-width: 31px;
    padding: 0 6px;
  }

  .language-button[data-language="zh"] {
    min-width: 40px;
  }

  .menu-toggle {
    width: 38px;
    height: 38px;
  }

  .hero h1 {
    font-size: clamp(26px, 8vw, 32px);
  }

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

  .button {
    width: 100%;
  }

  .section-heading h2,
  .about-copy h2,
  .contact-heading h2 {
    font-size: 32px;
  }
}

@media (max-width: 360px) {
  .brand {
    width: 44px;
    height: 40px;
    flex: 0 0 44px;
  }

  .brand-logo {
    width: 160px;
    max-width: none;
    transform: translate(-6px, -5px);
  }

  .nav-shell {
    gap: 12px;
  }
}