:root {
  --ink: #10241f;
  --ink-soft: #456159;
  --green-950: #061712;
  --green-900: #0a241c;
  --green-800: #0b3328;
  --green-700: #10533f;
  --mint: #79e7ba;
  --mint-bright: #9ff3cf;
  --cream: #f3f1e9;
  --sand: #ded9cc;
  --white: #fff;
  --border: rgba(15, 52, 41, 0.15);
  --container: 1200px;
  --header-height: 84px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--ink);
  background: var(--cream);
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

button,
input,
textarea {
  font: inherit;
}

svg {
  display: block;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--green-950);
  background: var(--mint);
  transform: translateY(-150%);
}

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

.container {
  width: min(calc(100% - 96px), var(--container));
  margin-inline: auto;
}

.section-anchor {
  scroll-margin-top: var(--header-height);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.site-header.scrolled,
.site-header.menu-active {
  color: var(--ink);
  background: rgba(243, 241, 233, 0.94);
  border-color: rgba(16, 36, 31, 0.12);
  box-shadow: 0 12px 40px rgba(4, 26, 20, 0.06);
  backdrop-filter: blur(16px);
}

.nav-shell {
  display: flex;
  width: min(calc(100% - 64px), 1360px);
  height: var(--header-height);
  margin-inline: auto;
  align-items: center;
}

.brand {
  display: inline-flex;
  min-width: 238px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
}

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

.brand-copy strong {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.16em;
}

.brand-copy small {
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.2em;
  opacity: 0.58;
}

.desktop-nav {
  display: flex;
  margin: 0 auto;
  align-items: center;
  gap: 44px;
}

.nav-link {
  position: relative;
  padding: 31px 0 30px;
  font-size: 14px;
  letter-spacing: 0.05em;
  opacity: 0.7;
  transition: opacity 0.25s ease;
}

.nav-link::after {
  position: absolute;
  right: 50%;
  bottom: 23px;
  left: 50%;
  height: 1px;
  background: var(--mint);
  content: "";
  transition: inset 0.3s var(--ease);
}

.nav-link:hover,
.nav-link.active {
  opacity: 1;
}

.nav-link.active::after,
.nav-link:hover::after {
  right: 0;
  left: 0;
}

.nav-contact {
  display: inline-flex;
  min-width: 142px;
  height: 46px;
  padding-inline: 20px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--green-950);
  background: var(--mint);
  font-size: 13px;
  font-weight: 600;
  transition: background 0.25s ease, transform 0.25s ease;
}

.nav-contact:hover {
  background: var(--mint-bright);
  transform: translateY(-2px);
}

.nav-contact svg,
.button svg,
.text-link svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.menu-toggle,
.mobile-menu {
  display: none;
}

.hero {
  position: relative;
  display: flex;
  min-height: 760px;
  height: 100svh;
  max-height: 980px;
  overflow: hidden;
  color: var(--white);
  background: var(--green-950);
  align-items: center;
}

.hero-image,
.hero-grid,
.hero-glow {
  position: absolute;
  inset: 0;
}

.hero-image {
  background-image:
    linear-gradient(90deg, rgba(3, 16, 13, 0.78) 0%, rgba(3, 16, 13, 0.5) 36%, rgba(3, 16, 13, 0.1) 72%),
    linear-gradient(0deg, rgba(3, 16, 13, 0.48), transparent 45%),
    url("./assets/guizhou-tech-hero.jpg");
  background-position: center;
  background-size: cover;
  transform: scale(1.015);
  animation: heroDrift 16s ease-in-out infinite alternate;
}

.hero-grid {
  opacity: 0.12;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 88px 88px;
  mask-image: linear-gradient(90deg, black, transparent 68%);
}

.hero-glow {
  inset: auto auto -260px -180px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: rgba(53, 201, 145, 0.16);
  filter: blur(110px);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 66px;
}

.eyebrow,
.section-kicker {
  margin: 0;
  color: var(--green-700);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
}

.hero .eyebrow {
  display: flex;
  color: var(--mint);
  align-items: center;
  gap: 16px;
}

.hero .eyebrow::before {
  width: 34px;
  height: 1px;
  background: currentColor;
  content: "";
}

.hero h1 {
  max-width: 780px;
  margin: 27px 0 28px;
  font-size: clamp(58px, 6.3vw, 90px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.055em;
}

.hero h1 span {
  color: var(--mint-bright);
}

.hero-lead {
  margin: 0;
  color: rgba(255, 255, 255, 0.66);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  margin-top: 42px;
  gap: 14px;
}

.button {
  display: inline-flex;
  height: 54px;
  padding: 0 26px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  font-size: 14px;
  font-weight: 500;
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  min-width: 160px;
  color: var(--green-950);
  background: var(--mint);
}

.button-primary:hover {
  background: var(--mint-bright);
}

.button-ghost {
  min-width: 128px;
  border: 1px solid rgba(255, 255, 255, 0.28);
}

.button-ghost:hover {
  border-color: rgba(255, 255, 255, 0.7);
  background: rgba(255, 255, 255, 0.08);
}

.hero-aside {
  position: absolute;
  z-index: 2;
  right: 48px;
  bottom: 0;
  display: grid;
  width: 486px;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(3, 20, 15, 0.74);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(18px);
}

.hero-aside > div {
  min-height: 126px;
  padding: 26px;
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.hero-aside > div:last-child {
  border-right: 0;
}

.hero-aside span {
  color: var(--mint);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 11px;
  letter-spacing: 0.14em;
}

.hero-aside p {
  margin: 13px 0 0;
  color: rgba(255, 255, 255, 0.82);
  font-size: 13px;
  line-height: 1.65;
}

.scroll-cue {
  position: absolute;
  z-index: 2;
  bottom: 44px;
  left: 48px;
  display: flex;
  align-items: center;
  gap: 13px;
}

.scroll-cue span {
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 10px;
  letter-spacing: 0.2em;
  opacity: 0.62;
}

.scroll-cue i {
  position: relative;
  display: block;
  width: 55px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.28);
}

.scroll-cue i::after {
  position: absolute;
  inset: 0;
  background: var(--mint);
  content: "";
  animation: scrollLine 2.2s ease-in-out infinite;
}

.about {
  padding: 140px 0 132px;
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 45%, rgba(50, 144, 105, 0.08), transparent 26%),
    var(--cream);
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr 2fr;
  align-items: start;
  gap: 40px;
}

.section-heading > div {
  display: flex;
  align-items: center;
  gap: 17px;
}

.section-index {
  display: inline-flex;
  width: 38px;
  height: 38px;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
  border: 1px solid rgba(16, 83, 63, 0.3);
  border-radius: 50%;
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.section-heading h2,
.contact h2 {
  margin: -7px 0 0;
  font-size: clamp(40px, 4.2vw, 62px);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.045em;
}

.section-heading h2 span,
.contact h2 span {
  color: var(--green-700);
}

.about-layout {
  display: grid;
  margin-top: 76px;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  align-items: center;
}

.about-story {
  padding-left: calc(33.333% + 12px);
}

.about-story p {
  margin: 0 0 22px;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 2;
}

.about-story .lead-copy {
  color: var(--ink);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.7;
}

.text-link {
  display: inline-flex;
  margin-top: 15px;
  padding-bottom: 9px;
  align-items: center;
  gap: 32px;
  color: var(--green-700);
  border-bottom: 1px solid rgba(16, 83, 63, 0.35);
  font-size: 14px;
  font-weight: 600;
  transition: gap 0.25s ease, border-color 0.25s ease;
}

.text-link:hover {
  gap: 42px;
  border-color: var(--green-700);
}

.about-visual {
  position: relative;
  display: flex;
  min-height: 500px;
  overflow: hidden;
  padding: 50px;
  color: var(--white);
  background:
    radial-gradient(circle at 50% 45%, rgba(121, 231, 186, 0.2), transparent 34%),
    linear-gradient(145deg, #0f3e31, #071b15);
  align-items: center;
  justify-content: center;
}

.about-visual::before {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.15) 1px, transparent 1px);
  background-size: 44px 44px;
  content: "";
}

.vector-center {
  position: relative;
  z-index: 2;
  display: flex;
  width: 150px;
  height: 150px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(121, 231, 186, 0.3);
  border-radius: 50%;
  background: rgba(5, 25, 19, 0.68);
  box-shadow: 0 0 80px rgba(121, 231, 186, 0.12);
}

.vector-center svg {
  width: 74px;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.vector-orbit {
  position: absolute;
  border: 1px solid rgba(121, 231, 186, 0.16);
  border-radius: 50%;
}

.vector-orbit::after {
  position: absolute;
  top: 18%;
  right: 10%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 18px var(--mint);
  content: "";
}

.orbit-one {
  width: 290px;
  height: 290px;
  animation: rotate 15s linear infinite;
}

.orbit-two {
  width: 410px;
  height: 410px;
  animation: rotate 22s linear infinite reverse;
}

.visual-copy {
  position: absolute;
  z-index: 2;
  right: 42px;
  bottom: 38px;
  left: 42px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
}

.visual-copy strong {
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.visual-copy span {
  max-width: 180px;
  color: rgba(255, 255, 255, 0.52);
  font-size: 11px;
  line-height: 1.7;
  text-align: right;
}

.values-grid {
  display: grid;
  margin-top: 98px;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border);
}

.value-item {
  padding: 36px 44px 0 0;
  border-right: 1px solid var(--border);
}

.value-item + .value-item {
  padding-left: 44px;
}

.value-item:last-child {
  border-right: 0;
}

.value-item > span {
  color: var(--green-700);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.15em;
}

.value-item h3 {
  margin: 18px 0 11px;
  font-size: 20px;
  font-weight: 500;
}

.value-item p {
  max-width: 260px;
  margin: 0;
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.8;
}

.services {
  position: relative;
  overflow: hidden;
  padding: 140px 0 128px;
  color: var(--white);
  background: var(--green-950);
}

.services-backdrop {
  position: absolute;
  top: -300px;
  right: -250px;
  width: 700px;
  height: 700px;
  border: 1px solid rgba(121, 231, 186, 0.1);
  border-radius: 50%;
  box-shadow:
    0 0 0 120px rgba(121, 231, 186, 0.025),
    0 0 0 240px rgba(121, 231, 186, 0.018);
}

.services .container {
  position: relative;
}

.section-heading-light .section-index {
  color: var(--mint);
  border-color: rgba(121, 231, 186, 0.3);
}

.section-heading-light .section-kicker,
.section-heading-light h2 span {
  color: var(--mint);
}

.service-list {
  margin-top: 88px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.service-card {
  display: grid;
  min-height: 320px;
  padding: 52px 0;
  grid-template-columns: 100px 170px 1fr;
  gap: 38px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  transition: background 0.4s ease, padding 0.4s var(--ease);
}

.service-card:hover {
  padding-right: 28px;
  padding-left: 28px;
  background: rgba(255, 255, 255, 0.035);
}

.service-number {
  color: rgba(255, 255, 255, 0.35);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 13px;
  letter-spacing: 0.14em;
}

.service-icon {
  display: flex;
  width: 112px;
  height: 112px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(121, 231, 186, 0.24);
  border-radius: 50%;
  background: rgba(121, 231, 186, 0.04);
  transition: border-color 0.35s ease, background 0.35s ease, transform 0.35s var(--ease);
}

.service-card:hover .service-icon {
  border-color: var(--mint);
  background: rgba(121, 231, 186, 0.09);
  transform: rotate(-5deg) scale(1.04);
}

.service-icon svg {
  width: 48px;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.service-content {
  display: grid;
  grid-template-columns: minmax(250px, 0.8fr) minmax(320px, 1.2fr);
  column-gap: 48px;
  align-content: start;
}

.service-en {
  grid-column: 1 / -1;
  margin: 0 0 13px;
  color: var(--mint);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
}

.service-content h3 {
  margin: 0;
  font-size: clamp(26px, 2.5vw, 38px);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.service-content > p:not(.service-en) {
  margin: 3px 0 26px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  line-height: 1.9;
}

.service-content ul {
  grid-column: 2;
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 9px;
  list-style: none;
}

.service-content li {
  padding: 7px 13px;
  color: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  font-size: 11px;
}

.extended-services {
  margin-top: 94px;
}

.extended-heading {
  display: flex;
  margin-bottom: 42px;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
}

.extended-heading > p {
  margin: 0 0 9px;
  color: var(--mint);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
}

.extended-heading h3 {
  margin: 0;
  font-size: clamp(26px, 3vw, 40px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.035em;
  text-align: right;
}

.extended-heading h3 span {
  color: var(--mint);
}

.extended-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.extended-card {
  min-height: 392px;
  padding: 34px 34px 38px;
  border-right: 1px solid rgba(255, 255, 255, 0.15);
  transition: background 0.35s ease, transform 0.35s var(--ease);
}

.extended-card:first-child {
  padding-left: 0;
}

.extended-card:last-child {
  padding-right: 0;
  border-right: 0;
}

.extended-card:hover {
  background: rgba(121, 231, 186, 0.035);
  transform: translateY(-5px);
}

.extended-card-top {
  display: flex;
  margin-bottom: 50px;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.35);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 12px;
  letter-spacing: 0.14em;
}

.extended-card-top svg {
  width: 44px;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.extended-card h4 {
  margin: 0 0 18px;
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.025em;
}

.extended-card > p:not(.service-en) {
  min-height: 82px;
  margin: 0;
  color: rgba(255, 255, 255, 0.55);
  font-size: 13px;
  line-height: 1.85;
}

.extended-card ul {
  display: flex;
  margin: 27px 0 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.extended-card li {
  padding: 6px 10px;
  color: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 999px;
  font-size: 10px;
}

.delivery-flow {
  display: flex;
  margin-top: 80px;
  padding: 28px 30px;
  align-items: center;
  justify-content: space-between;
  border: 1px solid rgba(121, 231, 186, 0.17);
  background: rgba(121, 231, 186, 0.035);
}

.flow-label {
  color: var(--mint);
  font-size: 13px;
  font-weight: 500;
}

.flow-steps {
  display: flex;
  align-items: center;
  gap: 18px;
}

.flow-steps span {
  display: flex;
  align-items: center;
  gap: 9px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 12px;
}

.flow-steps b {
  color: var(--mint);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 9px;
  font-weight: 500;
}

.flow-steps i {
  width: 42px;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.contact {
  position: relative;
  overflow: hidden;
  padding: 132px 0;
  background: #dfe9e2;
}

.contact::before {
  position: absolute;
  top: -180px;
  right: 8%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(121, 231, 186, 0.25);
  filter: blur(90px);
  content: "";
}

.contact-lines {
  position: absolute;
  inset: 0;
  opacity: 0.25;
  background-image:
    linear-gradient(90deg, transparent calc(50% - 1px), rgba(16, 83, 63, 0.14) 50%, transparent calc(50% + 1px)),
    radial-gradient(circle at 78% 50%, transparent 0 160px, rgba(16, 83, 63, 0.18) 161px 162px, transparent 163px);
}

.contact-layout {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 11%;
  align-items: end;
}

.contact-intro .section-kicker {
  display: inline-block;
  margin-left: 14px;
}

.contact h2 {
  margin-top: 29px;
}

.contact-intro > p:last-child {
  max-width: 480px;
  margin: 30px 0 0;
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.9;
}

.contact-card {
  position: relative;
  display: flex;
  min-height: 330px;
  padding: 38px 42px;
  overflow: hidden;
  color: var(--white);
  background: var(--green-800);
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 28px 70px rgba(8, 44, 33, 0.18);
  transition: transform 0.4s var(--ease), box-shadow 0.4s ease;
}

.contact-card::after {
  position: absolute;
  top: -120px;
  right: -90px;
  width: 270px;
  height: 270px;
  border: 1px solid rgba(121, 231, 186, 0.2);
  border-radius: 50%;
  box-shadow: 0 0 0 55px rgba(121, 231, 186, 0.035);
  content: "";
}

.contact-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 36px 80px rgba(8, 44, 33, 0.25);
}

.contact-card-top {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--mint);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: 11px;
  letter-spacing: 0.2em;
}

.contact-card-top svg {
  width: 24px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.phone-row {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 23px;
}

.phone-row > svg {
  width: 37px;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.3;
}

.phone-row div {
  display: grid;
  gap: 5px;
}

.phone-row small {
  color: rgba(255, 255, 255, 0.52);
  font-size: 11px;
}

.phone-row strong {
  font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.contact-meta {
  position: relative;
  z-index: 1;
  display: flex;
  padding-top: 20px;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.48);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  font-size: 11px;
}

.site-footer {
  color: rgba(255, 255, 255, 0.78);
  background: #04100d;
}

.footer-top {
  display: flex;
  min-height: 160px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
  min-width: 0;
}

.footer-brand .brand-copy strong {
  font-size: 15px;
  letter-spacing: 0.08em;
}

.footer-brand .brand-copy small {
  margin-top: 3px;
  font-size: 8px;
  letter-spacing: 0.12em;
}

.footer-top nav {
  display: flex;
  gap: 34px;
}

.footer-top nav a {
  color: rgba(255, 255, 255, 0.54);
  font-size: 12px;
  transition: color 0.25s ease;
}

.footer-top nav a:hover {
  color: var(--mint);
}

.footer-bottom {
  display: flex;
  min-height: 74px;
  align-items: center;
  justify-content: space-between;
  color: rgba(255, 255, 255, 0.36);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 10px;
  letter-spacing: 0.05em;
}

.footer-bottom p {
  margin: 0;
}

.footer-bottom a {
  transition: color 0.25s ease;
}

.footer-bottom a:hover {
  color: var(--mint);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.85s var(--ease), transform 0.85s var(--ease);
}

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

.reveal-delay-1 {
  transition-delay: 0.12s;
}

.reveal-delay-2 {
  transition-delay: 0.24s;
}

.reveal-delay-3 {
  transition-delay: 0.36s;
}

@keyframes heroDrift {
  from { transform: scale(1.015); }
  to { transform: scale(1.055); }
}

@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  55%, 100% { transform: translateX(100%); }
}

@keyframes rotate {
  to { transform: rotate(360deg); }
}

@media (max-width: 1100px) {
  .container {
    width: min(calc(100% - 64px), var(--container));
  }

  .desktop-nav {
    gap: 26px;
  }

  .nav-contact {
    min-width: 124px;
  }

  .about-story {
    padding-left: 0;
  }

  .service-card {
    grid-template-columns: 58px 132px 1fr;
    gap: 24px;
  }

  .service-icon {
    width: 96px;
    height: 96px;
  }

  .service-content {
    grid-template-columns: 1fr;
  }

  .service-content > p:not(.service-en),
  .service-content ul {
    grid-column: 1;
  }

  .service-content > p:not(.service-en) {
    margin-top: 17px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-height: 72px;
  }

  .container {
    width: min(calc(100% - 40px), var(--container));
  }

  .nav-shell {
    width: calc(100% - 40px);
  }

  .brand {
    min-width: 0;
  }

  .desktop-nav,
  .nav-contact {
    display: none;
  }

  .menu-toggle {
    display: grid;
    width: 44px;
    height: 44px;
    margin-left: auto;
    padding: 13px 10px;
    border: 0;
    background: transparent;
    cursor: pointer;
    align-content: center;
    gap: 7px;
  }

  .menu-toggle span {
    display: block;
    width: 24px;
    height: 1px;
    background: currentColor;
    transition: transform 0.3s ease;
  }

  .menu-active .menu-toggle span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-active .menu-toggle span:last-child {
    transform: translateY(-4px) rotate(-45deg);
  }

  .mobile-menu {
    position: fixed;
    z-index: 99;
    inset: var(--header-height) 0 0;
    display: flex;
    padding: 60px 40px 42px;
    visibility: hidden;
    opacity: 0;
    background: var(--cream);
    flex-direction: column;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, transform 0.3s var(--ease), visibility 0.3s;
  }

  .menu-active .mobile-menu {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .mobile-menu nav {
    display: grid;
  }

  .mobile-menu nav a {
    display: flex;
    padding: 21px 0;
    align-items: center;
    gap: 22px;
    color: var(--ink);
    border-bottom: 1px solid var(--border);
    font-size: 24px;
  }

  .mobile-menu nav span {
    color: var(--green-700);
    font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
    font-size: 10px;
  }

  .mobile-phone {
    margin-top: auto;
    color: var(--green-700);
    font-family: "Avenir Next", Avenir, "Helvetica Neue", sans-serif;
    font-size: 28px;
  }

  .hero {
    min-height: 700px;
  }

  .hero h1 {
    font-size: clamp(50px, 10vw, 72px);
  }

  .hero-aside {
    right: 20px;
    width: min(62vw, 470px);
  }

  .scroll-cue {
    left: 20px;
  }

  .about,
  .services,
  .contact {
    padding: 100px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-layout {
    margin-top: 56px;
    grid-template-columns: 1fr;
    gap: 54px;
  }

  .about-story {
    max-width: 680px;
  }

  .about-visual {
    min-height: 470px;
  }

  .values-grid {
    margin-top: 70px;
  }

  .value-item,
  .value-item + .value-item {
    padding: 30px 22px 0;
  }

  .value-item:first-child {
    padding-left: 0;
  }

  .service-card {
    grid-template-columns: 42px 105px 1fr;
  }

  .service-icon {
    width: 82px;
    height: 82px;
  }

  .service-icon svg {
    width: 39px;
  }

  .delivery-flow {
    align-items: flex-start;
    gap: 26px;
    flex-direction: column;
  }

  .extended-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .extended-heading h3 {
    text-align: left;
  }

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

  .extended-card,
  .extended-card:first-child,
  .extended-card:last-child {
    min-height: 0;
    padding: 34px 0 38px;
    border-right: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  }

  .extended-card:last-child {
    border-bottom: 0;
  }

  .extended-card > p:not(.service-en) {
    min-height: 0;
  }

  .flow-steps {
    width: 100%;
    justify-content: space-between;
  }

  .flow-steps i {
    flex: 1;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 58px;
  }
}

@media (max-width: 600px) {
  .brand-copy strong {
    font-size: 15px;
  }

  .hero {
    height: auto;
    min-height: 100svh;
    padding: 118px 0 170px;
    align-items: center;
  }

  .hero-image {
    background-image:
      linear-gradient(90deg, rgba(3, 16, 13, 0.72), rgba(3, 16, 13, 0.26)),
      linear-gradient(0deg, rgba(3, 16, 13, 0.8), transparent 58%),
      url("./assets/guizhou-tech-hero.jpg");
    background-position: 62% center;
  }

  .hero-grid {
    background-size: 60px 60px;
  }

  .hero-content {
    padding-top: 0;
  }

  .hero .eyebrow {
    font-size: 9px;
    letter-spacing: 0.14em;
  }

  .hero .eyebrow::before {
    width: 24px;
  }

  .hero h1 {
    margin: 22px 0;
    font-size: clamp(44px, 13vw, 62px);
    line-height: 1.16;
  }

  .hero-lead {
    font-size: 14px;
  }

  .hero-lead br {
    display: none;
  }

  .hero-actions {
    margin-top: 34px;
  }

  .hero-aside {
    right: 20px;
    bottom: 24px;
    left: 20px;
    width: auto;
  }

  .hero-aside > div {
    min-height: 95px;
    padding: 17px 15px;
  }

  .hero-aside p {
    margin-top: 8px;
    font-size: 10px;
  }

  .scroll-cue {
    display: none;
  }

  .about,
  .services,
  .contact {
    padding: 80px 0;
  }

  .section-heading {
    gap: 32px;
  }

  .section-heading h2,
  .contact h2 {
    font-size: 38px;
  }

  .about-layout {
    margin-top: 44px;
  }

  .about-story .lead-copy {
    font-size: 19px;
  }

  .about-story p {
    font-size: 14px;
  }

  .about-visual {
    min-height: 390px;
    padding: 30px;
  }

  .orbit-one {
    width: 230px;
    height: 230px;
  }

  .orbit-two {
    width: 330px;
    height: 330px;
  }

  .visual-copy {
    right: 26px;
    bottom: 26px;
    left: 26px;
  }

  .visual-copy span {
    display: none;
  }

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

  .value-item,
  .value-item + .value-item,
  .value-item:first-child {
    padding: 28px 0;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .value-item:last-child {
    border-bottom: 0;
  }

  .service-list {
    margin-top: 58px;
  }

  .service-card {
    min-height: 0;
    padding: 38px 0 43px;
    grid-template-columns: 35px 1fr;
    gap: 16px;
  }

  .service-card:hover {
    padding-right: 0;
    padding-left: 0;
    background: transparent;
  }

  .service-icon {
    display: none;
  }

  .service-content h3 {
    font-size: 28px;
  }

  .service-content > p:not(.service-en) {
    font-size: 13px;
  }

  .delivery-flow {
    margin-top: 55px;
  }

  .extended-services {
    margin-top: 68px;
  }

  .extended-card-top {
    margin-bottom: 34px;
  }

  .flow-steps {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 17px;
  }

  .flow-steps i {
    display: none;
  }

  .contact-card {
    min-height: 300px;
    padding: 30px 25px;
  }

  .phone-row {
    gap: 14px;
  }

  .phone-row > svg {
    width: 29px;
  }

  .phone-row strong {
    font-size: 30px;
  }

  .contact-meta {
    align-items: flex-start;
    gap: 8px;
    flex-direction: column;
  }

  .footer-top {
    padding: 40px 0;
    align-items: flex-start;
    gap: 35px;
    flex-direction: column;
  }

  .footer-top nav {
    gap: 22px;
  }

  .footer-bottom {
    padding: 23px 0;
    align-items: flex-start;
    gap: 12px;
    flex-direction: column;
  }
}

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

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