:root {
  --bg: #0b1721;
  --surface: #ffffff;
  --surface-alt: #f5f7fb;
  --line: rgba(8, 28, 42, 0.12);
  --text: #14222e;
  --muted: #5f7280;
  --brand: #053247;
  --accent: #0abaf0;
  --accent-soft: rgba(10, 186, 240, 0.14);
  --success: #13835d;
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --shadow-lg: 0 24px 64px rgba(5, 24, 34, 0.18);
  --shadow-md: 0 16px 36px rgba(8, 25, 36, 0.12);
  --container: min(1180px, calc(100vw - 40px));
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-display: var(--font-sans);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: var(--font-sans);
  background:
    radial-gradient(circle at top left, rgba(10, 186, 240, 0.12), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #eef4f8 100%);
}

body[data-locale="en"] {
  font-family: var(--font-sans);
}

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

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

button,
input {
  font: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  transition: background-color 220ms ease, box-shadow 220ms ease, backdrop-filter 220ms ease;
}

.site-header.is-solid {
  background: rgba(5, 18, 27, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 8px 24px rgba(4, 11, 17, 0.18);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: 24px;
}

.brand img {
  width: 176px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.9);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-nav a:hover,
.site-nav a.is-active {
  background: rgba(255, 255, 255, 0.12);
}

.site-nav a.language-link {
  color: var(--accent);
  border: 1px solid rgba(10, 186, 240, 0.28);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 0 auto 6px;
  background: #fff;
}

.nav-toggle span:last-child {
  margin-bottom: 0;
}

.hero-section {
  position: relative;
  min-height: 100svh;
  color: #fff;
  overflow: clip;
  background: #02070a;
}

.hero-slider,
.hero-slide {
  position: absolute;
  inset: 0;
}

.hero-slide {
  opacity: 0;
  transition: opacity 800ms ease;
  background-position: center;
  background-size: cover;
}

.hero-slide::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(3, 12, 19, 0.9) 0%, rgba(3, 12, 19, 0.42) 40%, rgba(3, 12, 19, 0.7) 100%),
    linear-gradient(180deg, rgba(3, 12, 19, 0.18) 0%, rgba(3, 12, 19, 0.78) 100%);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-overlay {
  position: relative;
  z-index: 2;
  min-height: 100svh;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 380px);
  gap: 36px;
  align-items: end;
  padding: 132px 0 68px;
}

.hero-copy {
  max-width: 680px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  font-weight: 700;
}

.eyebrow::before {
  content: "";
  width: 42px;
  height: 1px;
  background: currentColor;
}

.hero-copy h1,
.section-heading h2,
.about-card h3,
.video-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1;
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  font-size: clamp(3.2rem, 8vw, 6.5rem);
  text-wrap: balance;
}

.hero-summary,
.section-intro,
.about-body p,
.city-meta p,
.support-list li,
.copyright,
.legal-links a {
  line-height: 1.75;
  font-size: 1rem;
}

.hero-summary {
  max-width: 58ch;
  margin: 22px 0 0;
  color: rgba(255, 255, 255, 0.82);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--brand) 0%, #0d5b7c 100%);
}

.button-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.hero-panel {
  align-self: end;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: rgba(10, 17, 25, 0.58);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
}

.panel-label {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-stats {
  display: grid;
  gap: 14px;
}

.hero-stat {
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
}

.hero-stat strong {
  display: block;
  font-size: 1.8rem;
  font-family: var(--font-display);
}

.hero-stat span {
  display: block;
  margin-top: 6px;
  color: rgba(255, 255, 255, 0.72);
}

.section {
  padding: 96px 0;
}

.section-heading {
  margin-bottom: 38px;
}

.section-heading h2,
.video-copy h2 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  color: var(--text);
}

.section-intro {
  max-width: 60ch;
  margin: 16px 0 0;
  color: var(--muted);
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 32px;
}

.about-media {
  position: relative;
}

.about-media::before {
  content: "";
  position: absolute;
  inset: auto -18px -18px auto;
  width: 68%;
  height: 52%;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(10, 186, 240, 0.22), rgba(5, 50, 71, 0.22));
  z-index: 0;
}

.about-media img {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-card,
.feature-item,
.service-card,
.milestone-card,
.video-card,
.contact-form,
.contact-side,
.wechat-card {
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(5, 50, 71, 0.08);
}

.about-card {
  padding: clamp(26px, 4vw, 42px);
}

.about-card h3 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: var(--brand);
}

.about-body {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.about-body p {
  margin: 0;
  color: var(--muted);
}

.solutions-section {
  background: linear-gradient(180deg, rgba(5, 50, 71, 0.04) 0%, rgba(5, 50, 71, 0.02) 100%);
}

.feature-slider {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) 56px;
  align-items: center;
  gap: 18px;
}

.feature-track {
  overflow: hidden;
}

.feature-item {
  display: none;
  grid-template-columns: minmax(280px, 42%) minmax(0, 1fr);
  overflow: hidden;
}

.feature-item.is-active {
  display: grid;
}

.feature-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-body {
  padding: clamp(24px, 4vw, 44px);
}

.feature-body h3 {
  margin: 0 0 14px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.feature-body p {
  margin: 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.slider-arrow {
  position: relative;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 50%;
  background: rgba(5, 50, 71, 0.08);
  cursor: pointer;
}

.slider-arrow::before {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 12px;
  height: 12px;
  border-top: 2px solid var(--brand);
  border-right: 2px solid var(--brand);
}

.slider-prev::before {
  transform: rotate(-135deg);
}

.slider-next::before {
  transform: rotate(45deg);
}

.slider-dots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.slider-dots button {
  width: 10px;
  height: 10px;
  border: 0;
  border-radius: 50%;
  padding: 0;
  background: rgba(5, 50, 71, 0.16);
  cursor: pointer;
}

.slider-dots button.is-active {
  width: 34px;
  border-radius: 999px;
  background: var(--brand);
}

.service-grid,
.milestone-grid,
.badge-cloud,
.field-grid {
  display: grid;
  gap: 20px;
}

.services-section {
  background:
    radial-gradient(circle at top right, rgba(10, 186, 240, 0.1), transparent 26%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.22) 0%, rgba(242, 247, 251, 0.52) 100%);
}

.service-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.service-card {
  position: relative;
  min-height: 330px;
  padding: 26px;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(5, 50, 71, 0.08);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 253, 0.92));
  box-shadow: 0 18px 40px rgba(10, 28, 39, 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, rgba(10, 186, 240, 0) 82%);
}

.service-card::after {
  content: attr(data-index);
  position: absolute;
  right: 18px;
  bottom: 10px;
  color: rgba(5, 50, 71, 0.05);
  font-family: var(--font-display);
  font-size: 5.2rem;
  font-weight: 700;
  line-height: 1;
}

.service-card:hover {
  transform: translateY(-4px);
  background: linear-gradient(180deg, rgba(5, 50, 71, 0.98), rgba(11, 90, 122, 0.98));
  color: #fff;
  box-shadow: 0 24px 54px rgba(5, 25, 37, 0.18);
}

.service-card:hover .service-list,
.service-card:hover .service-icon,
.service-card:hover .service-caption,
.service-card:hover .service-chip {
  color: rgba(255, 255, 255, 0.78);
}

.service-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.service-icon {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--brand);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
}

.service-headline {
  min-width: 0;
}

.service-header h3 {
  margin: 0;
  font-size: 1.55rem;
  line-height: 1.2;
}

.service-caption {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.service-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 10px;
  color: var(--muted);
}

.service-chip {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px 0 34px;
  border-radius: 999px;
  background: rgba(5, 50, 71, 0.04);
  line-height: 1.45;
}

.service-chip::before {
  content: "";
  position: absolute;
  left: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(10, 186, 240, 0.14);
}

.service-card:hover .service-chip {
  background: rgba(255, 255, 255, 0.08);
}

.service-card:hover .service-chip::before {
  background: #fff;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.14);
}

.milestone-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.milestone-card {
  padding: 24px;
  min-height: 210px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(242, 247, 251, 0.9));
}

.milestone-card strong {
  display: block;
  margin-bottom: 14px;
  color: var(--brand);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
}

.milestone-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.video-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  gap: 30px;
  padding: 30px;
  overflow: hidden;
  background:
    radial-gradient(circle at top left, rgba(10, 186, 240, 0.14), transparent 24%),
    linear-gradient(135deg, #101f28 0%, #0e2734 52%, #122f3d 100%);
  box-shadow: 0 24px 64px rgba(6, 19, 29, 0.2);
}

.video-card::before {
  content: "";
  position: absolute;
  left: -90px;
  bottom: -110px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(10, 186, 240, 0.09);
}

.video-copy {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10px 0;
}

.video-copy h2 {
  color: #fff;
}

.video-copy .section-intro {
  color: rgba(255, 255, 255, 0.72);
}

.video-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.video-highlight {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.video-frame {
  position: relative;
  z-index: 1;
  overflow: hidden;
  padding: 12px;
  border-radius: 30px;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
}

.video-frame::before {
  content: "EXPOTEC FILM";
  position: absolute;
  top: 22px;
  left: 24px;
  z-index: 2;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(5, 20, 29, 0.7);
  color: rgba(255, 255, 255, 0.84);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.video-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 22px;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 460px);
  gap: 28px;
  align-items: stretch;
}

.contact-showcase {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 18px;
  padding: 8px 0;
}

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

.contact-story-kicker {
  margin-bottom: 14px;
}

.contact-story h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
}

.contact-panel-summary {
  max-width: 58ch;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.9;
}

.contact-metrics,
.contact-points {
  display: grid;
  gap: 16px;
}

.contact-metrics {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contact-points {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.contact-metric,
.contact-point {
  border-radius: 24px;
  border: 1px solid rgba(5, 50, 71, 0.08);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow-md);
}

.contact-metric {
  padding: 22px 22px 18px;
}

.contact-metric strong {
  display: block;
  color: var(--brand);
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  line-height: 1;
}

.contact-metric span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.7;
}

.contact-point {
  padding: 22px 24px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(244, 248, 252, 0.9));
}

.contact-point h4 {
  margin: 0 0 10px;
  font-size: 1.16rem;
  color: var(--brand);
}

.contact-point p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.contact-side {
  position: relative;
  overflow: hidden;
  padding: 28px;
  color: #fff;
  background:
    radial-gradient(circle at top right, rgba(10, 186, 240, 0.2), transparent 34%),
    linear-gradient(180deg, #10212d 0%, #0a1720 100%);
  box-shadow: 0 24px 60px rgba(4, 18, 27, 0.22);
}

.contact-side::before {
  content: "";
  position: absolute;
  right: -72px;
  bottom: -84px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(10, 186, 240, 0.08);
}

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

.field {
  display: grid;
  gap: 8px;
}

.field.is-wide {
  grid-column: 1 / -1;
}

.field label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--brand);
}

.field input {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid rgba(5, 50, 71, 0.12);
  border-radius: var(--radius-sm);
  background: #fff;
  outline: none;
}

.field input:focus {
  border-color: rgba(10, 186, 240, 0.6);
  box-shadow: 0 0 0 4px rgba(10, 186, 240, 0.12);
}

.form-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 22px;
}

.form-status {
  margin: 0;
  color: var(--muted);
}

.form-status.is-success {
  color: var(--success);
}

.city-switcher {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.city-switcher button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.78);
  cursor: pointer;
}

.city-switcher button.is-active {
  background: linear-gradient(135deg, #0a5b7c 0%, #0abaf0 100%);
  border-color: transparent;
  color: #fff;
}

.city-detail {
  position: relative;
  z-index: 1;
  padding: 22px;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
}

.city-detail h3 {
  margin: 0 0 14px;
  font-size: 1.9rem;
  color: #fff;
}

.city-meta {
  display: grid;
  gap: 14px;
}

.city-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.city-label {
  display: block;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.city-value {
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.8;
  word-break: break-word;
}

.city-row-address .city-value {
  max-width: 28ch;
}

.site-footer {
  padding: 24px 0 40px;
  background:
    radial-gradient(circle at top right, rgba(10, 186, 240, 0.16), transparent 24%),
    linear-gradient(180deg, #11202a 0%, #0b1319 100%);
  color: rgba(255, 255, 255, 0.86);
}

.footer-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.8fr) minmax(0, 1.2fr);
  gap: 26px;
}

.footer-column {
  padding: 28px 0;
}

.footer-logo {
  width: 176px;
}

.footer-brand > p {
  max-width: 36ch;
  color: rgba(255, 255, 255, 0.68);
}

.footer-title,
.wechat-title {
  margin: 0 0 18px;
  color: #fff;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.wechat-card {
  max-width: 280px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.08);
}

.wechat-card img {
  width: 120px;
  max-width: 100%;
  margin-top: 10px;
}

.badge-cloud {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
}

.badge-cloud img {
  max-height: 58px;
  width: auto;
  filter: grayscale(1) brightness(1.3);
}

.support-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 24px;
  padding: 0;
  margin: 22px 0 0;
  list-style: none;
}

.support-list li {
  color: rgba(255, 255, 255, 0.72);
}

.legal {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

.legal-links a {
  color: rgba(255, 255, 255, 0.72);
}

.legal-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legal-link-icon {
  width: 20px;
  height: 20px;
}

.legal-link-badge {
  height: 20px;
  width: auto;
  border-radius: 2px;
}

.copyright {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
}

@media (max-width: 1080px) {
  .hero-overlay,
  .about-layout,
  .contact-layout,
  .video-card,
  .footer-layout {
    grid-template-columns: 1fr;
  }

  .service-grid,
  .milestone-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-item {
    grid-template-columns: 1fr;
  }

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

  .contact-showcase {
    order: 2;
  }

  .contact-side {
    order: 1;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 20px;
    left: 20px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    border-radius: 24px;
    background: rgba(8, 19, 28, 0.96);
    box-shadow: var(--shadow-lg);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 12px 14px;
  }

  .hero-overlay {
    padding-top: 128px;
  }

  .feature-slider {
    grid-template-columns: 1fr;
  }

  .slider-arrow {
    display: none;
  }

  .badge-cloud,
  .support-list,
  .field-grid,
  .contact-metrics,
  .contact-points {
    grid-template-columns: 1fr;
  }

  .video-card {
    grid-template-columns: 1fr;
  }

  .city-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .legal {
    flex-direction: column;
  }

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

@media (max-width: 640px) {
  .section {
    padding: 72px 0;
  }

  .nav-wrap {
    min-height: 76px;
  }

  .brand img,
  .footer-logo {
    width: 144px;
  }

  .hero-copy h1 {
    font-size: clamp(2.6rem, 14vw, 4rem);
  }

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

  .contact-form,
  .contact-side,
  .video-card,
  .about-card {
    padding: 22px;
  }
}