:root {
  --bg: #070b17;
  --bg-alt: #0f162c;
  --bg-card: rgba(10, 18, 33, 0.92);
  --bg-card-light: #eef2fb;
  --primary: #4f7cff;
  --primary-soft: rgba(79, 124, 255, 0.12);
  --accent: #71ffd5;
  --text-main: #f5f8ff;
  --text-secondary: rgba(245, 248, 255, 0.72);
  --text-dark: #0d1326;
  --border: rgba(113, 125, 165, 0.2);
  --container-width: 1200px;
  --transition: all 0.2s ease-in-out;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: "Space Grotesk", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

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

.container {
  width: min(92%, var(--container-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(12px);
  background: linear-gradient(
    rgba(7, 11, 23, 0.92),
    rgba(7, 11, 23, 0.82)
  );
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
  color: inherit;
  text-decoration: none;
}

.brand-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 16px;
  box-shadow: 0 8px 18px rgba(31, 63, 150, 0.35);
}

.brand-identity {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: flex-start;
}

.brand-identity p:empty {
  display: none;
}

.brand-name {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
}

.brand-name-en {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--accent);
}

.brand-tagline {
  margin: 0;
  font-size: 13px;
  color: var(--text-secondary);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.locale-switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding-left: 14px;
  margin-left: 4px;
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.locale-btn {
  min-width: 44px;
  height: 32px;
  padding: 0 12px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(7, 11, 23, 0.4);
  color: var(--text-secondary);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
}

.locale-btn:hover,
.locale-btn:focus-visible {
  color: var(--text-main);
  border-color: rgba(113, 255, 213, 0.6);
  outline: none;
}

.locale-btn.is-active {
  color: var(--text-main);
  border-color: rgba(113, 255, 213, 0.65);
  background: linear-gradient(
    135deg,
    rgba(79, 124, 255, 0.35),
    rgba(113, 255, 213, 0.25)
  );
  box-shadow: 0 6px 14px rgba(12, 25, 58, 0.35);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(7, 11, 23, 0.65);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  z-index: 210;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.12);
}

.nav-toggle:focus-visible {
  outline: 2px solid rgba(113, 255, 213, 0.6);
  outline-offset: 2px;
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--text-main);
  transition: var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 18, 0.6);
  backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  visibility: hidden;
  z-index: 150;
}

.nav-overlay.is-active {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

.site-nav a {
  padding: 8px 12px;
  border-radius: 999px;
  transition: var(--transition);
  color: var(--text-secondary);
}

.site-nav a:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.08);
}

.site-nav .primary {
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: linear-gradient(
    120deg,
    rgba(79, 124, 255, 0.3),
    rgba(113, 255, 213, 0.2)
  );
}

.hero {
  padding: 120px 0 80px;
  background: radial-gradient(circle at top right, #13214b 0%, #070b17 65%);
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
}

.hero-copy {
  flex: 1;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  font-size: 48px;
  margin-bottom: 24px;
}

.hero-subtitle {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}

.btn.primary {
  background: linear-gradient(135deg, var(--primary), #8a96ff);
  color: #fff;
  box-shadow: 0 15px 30px rgba(79, 124, 255, 0.25);
}

.btn.primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px rgba(79, 124, 255, 0.35);
}

.btn.ghost {
  border-color: rgba(255, 255, 255, 0.2);
  color: var(--text-main);
}

.btn.ghost:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn.block {
  width: 100%;
}

.hero-visual {
  flex: 1;
  display: grid;
  gap: 20px;
}

.hero-panel {
  padding: 30px;
  border-radius: 28px;
  background: rgba(8, 14, 32, 0.9);
  border: 1px solid rgba(113, 125, 165, 0.15);
  position: relative;
  overflow: hidden;
}

.hero-panel-primary {
  background: radial-gradient(
      circle at top right,
      rgba(79, 124, 255, 0.35),
      transparent 55%
    ),
    rgba(8, 14, 32, 0.95);
}

.panel-eyebrow {
  font-size: 12px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.hero-panel-primary h3 {
  margin-bottom: 12px;
}

.hero-panel-primary p {
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.hero-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-highlights li {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 13px;
}

.hero-panel-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.hero-stat {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat-value {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
}

.hero-stat-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.section {
  padding: 100px 0;
}

.section.bg-dark {
  background: linear-gradient(180deg, #060b1a, #040713);
}

.section.bg-gradient {
  background: linear-gradient(135deg, #091640, #111d49 45%, #07343e);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.section-subtitle {
  color: var(--text-secondary);
}

.grid {
  display: grid;
  gap: 24px;
}

.grid.four {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

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

.feature-card {
  padding: 32px;
  border-radius: 24px;
  background: rgba(15, 24, 45, 0.88);
  border: 1px solid rgba(79, 124, 255, 0.12);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.feature-card.placeholder {
  border-style: dashed;
  border-color: rgba(113, 255, 213, 0.35);
  background: rgba(7, 12, 28, 0.65);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.feature-card ul {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--text-secondary);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(113, 255, 213, 0.4);
  box-shadow: 0 25px 40px rgba(12, 21, 49, 0.45);
}

.solution-card {
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(9, 15, 33, 0.85);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
  isolation: isolate;
  --solution-accent: #6ca8ff;
  --solution-gradient: linear-gradient(140deg, rgba(108, 168, 255, 0.35), rgba(7, 12, 30, 0.95));
}

.solution-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 25px 45px rgba(9, 12, 30, 0.8);
}

.solution-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--solution-gradient);
  opacity: 0.9;
  z-index: -2;
}

.solution-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: rgba(6, 10, 22, 0.85);
  z-index: -1;
}

.solution-cover {
  height: 180px;
  background-size: cover;
  background-position: center;
  filter: saturate(120%);
  position: relative;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.solution-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 4, 12, 0.1), rgba(3, 6, 18, 0.9));
}

.cover-manufacture {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.6),
      rgba(15, 24, 45, 0.6)
    ),
    url("https://images.unsplash.com/photo-1527430253228-e93688616381?auto=format&fit=crop&w=1000&q=80");
}

.cover-energy {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.6),
      rgba(15, 24, 45, 0.6)
    ),
    url("https://images.unsplash.com/photo-1509395176047-4a66953fd231?auto=format&fit=crop&w=1000&q=80");
}

.cover-mining {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.6),
      rgba(15, 24, 45, 0.6)
    ),
    url("https://images.unsplash.com/photo-1573497491208-6b1acb260507?auto=format&fit=crop&w=1000&q=80");
}

.cover-chemical {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.7),
      rgba(15, 24, 45, 0.7)
    ),
    url("https://images.unsplash.com/photo-1505739531075-1f151434dfaa?auto=format&fit=crop&w=1000&q=80");
}

.cover-construction {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.7),
      rgba(15, 24, 45, 0.7)
    ),
    url("https://images.unsplash.com/photo-1503387762-592deb58ef4e?auto=format&fit=crop&w=1000&q=80");
}

.cover-esg {
  background-image: linear-gradient(
      rgba(15, 24, 45, 0.7),
      rgba(15, 24, 45, 0.7)
    ),
    url("https://images.unsplash.com/photo-1451188502541-13943edb6acb?auto=format&fit=crop&w=1000&q=80");
}

.solution-body {
  padding: 28px 32px 34px;
  flex: 1;
}

.solution-body h3 {
  color: var(--text-main);
  margin-bottom: 10px;
}

.solution-body p {
  color: var(--text-secondary);
}

.solution-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 20px;
}

.solution-meta span {
  font-size: 0.85rem;
  padding: 6px 12px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--solution-accent) 20%, transparent);
  color: #fff;
  border: 1px solid color-mix(in srgb, var(--solution-accent) 50%, transparent);
}

.solution-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--solution-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.solution-link::after {
  content: "→";
  font-size: 0.9em;
  transition: transform 0.2s ease;
}

.solution-link:hover {
  color: #8bf5ff;
}

.solution-link:hover::after {
  transform: translateX(3px);
}

.solution-card.theme-manufacture {
  --solution-gradient: radial-gradient(circle at top, rgba(48, 108, 255, 0.35), rgba(5, 10, 26, 0.95));
}

.solution-card.theme-park {
  --solution-gradient: radial-gradient(circle at top, rgba(46, 162, 140, 0.35), rgba(4, 12, 24, 0.92));
}

.solution-card.theme-chemical {
  --solution-gradient: radial-gradient(circle at top, rgba(255, 107, 107, 0.35), rgba(24, 6, 12, 0.92));
}

.solution-card.theme-construction {
  --solution-gradient: radial-gradient(circle at top, rgba(255, 179, 84, 0.35), rgba(22, 12, 4, 0.92));
}

.solution-card.theme-esg {
  --solution-gradient: radial-gradient(circle at top, rgba(88, 205, 132, 0.35), rgba(4, 18, 10, 0.9));
}

.sub-hero {
  padding-top: 140px;
}

.sub-hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 36px;
  align-items: center;
}

.sub-hero-card {
  padding: 28px;
  border-radius: 20px;
  background: rgba(8, 18, 43, 0.7);
  border: 1px solid rgba(79, 124, 255, 0.2);
}

.sub-hero-card ul {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.solution-index {
  padding: 40px 0 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  background: linear-gradient(180deg, rgba(7, 12, 28, 0.9), rgba(4, 8, 18, 0.95));
}

.solution-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.solution-index-card {
  padding: 22px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-decoration: none;
  color: inherit;
  background: rgba(10, 16, 34, 0.85);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.solution-index-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.25);
}

.solution-index-eyebrow {
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 10px;
}

.solution-detail {
  padding: 90px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  overflow: hidden;
  --detail-accent: #6ca8ff;
}

.solution-detail::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      circle at top,
      rgba(255, 255, 255, 0.08),
      transparent 55%
    ),
    linear-gradient(180deg, #050816, #02040c 85%);
  z-index: 0;
}

.solution-detail .container {
  position: relative;
  z-index: 1;
}

.solution-detail.theme-manufacture {
  --detail-accent: #6ca8ff;
}

.solution-detail.theme-park {
  --detail-accent: #49d3b4;
}

.solution-detail.theme-chemical {
  --detail-accent: #ff8d8b;
}

.solution-detail.theme-construction {
  --detail-accent: #ffba6c;
}

.solution-detail.theme-esg {
  --detail-accent: #6fe8a0;
}

.detail-header {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
  align-items: center;
  margin-bottom: 36px;
}

.keyword-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.keyword-chips span {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--detail-accent) 60%, transparent);
  background: color-mix(in srgb, var(--detail-accent) 18%, transparent);
  color: #fff;
  font-size: 0.85rem;
}

.detail-highlight {
  padding: 24px;
  border-radius: 20px;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--detail-accent) 25%, transparent),
    rgba(6, 10, 22, 0.9)
  );
  border: 1px solid color-mix(in srgb, var(--detail-accent) 40%, transparent);
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.detail-block {
  padding: 24px 28px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(4, 10, 26, 0.6);
  position: relative;
  overflow: hidden;
}

.detail-block + .detail-block {
  margin-top: 18px;
}

.detail-block::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border-left: 3px solid color-mix(in srgb, var(--detail-accent) 70%, transparent);
  pointer-events: none;
  opacity: 0.6;
  z-index: 0;
}

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

.detail-block ul {
  margin-top: 12px;
  display: grid;
  gap: 8px;
  color: var(--text-secondary);
}

.solution-stepper {
  margin-top: 16px;
  position: relative;
  padding-left: 16px;
}

.solution-stepper::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: color-mix(in srgb, var(--detail-accent) 50%, transparent);
}

.solution-step {
  position: relative;
  padding-left: 24px;
  margin-bottom: 18px;
}

.solution-step:last-child {
  margin-bottom: 0;
}

.solution-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--detail-accent) 80%, white);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--detail-accent) 20%, transparent);
}

.solution-step h4 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: color-mix(in srgb, var(--detail-accent) 80%, white);
}

.detail-note {
  margin-top: 10px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.value-pill {
  padding: 16px;
  border-radius: 18px;
  background: rgba(6, 10, 22, 0.8);
  border: 1px solid color-mix(in srgb, var(--detail-accent) 35%, transparent);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.value-pill-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
}

.value-pill-value {
  font-weight: 700;
  font-size: 1.05rem;
  color: color-mix(in srgb, var(--detail-accent) 80%, white);
}

.cta-band {
  background: linear-gradient(
    120deg,
    rgba(75, 124, 255, 0.2),
    rgba(113, 255, 213, 0.1)
  );
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.cta-band-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  align-items: center;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.platform-card {
  padding: 32px;
  border-radius: 20px;
  background: rgba(8, 18, 43, 0.7);
  border: 1px solid rgba(79, 124, 255, 0.18);
  position: relative;
}

.platform-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid rgba(113, 255, 213, 0.18);
  opacity: 0;
  transition: var(--transition);
}

.platform-card:hover::before {
  opacity: 1;
}

.metrics {
  background: linear-gradient(120deg, rgba(113, 255, 213, 0.12), transparent);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.metric {
  background: rgba(15, 24, 45, 0.88);
  border-radius: 20px;
  padding: 32px;
  text-align: center;
  border: 1px solid rgba(79, 124, 255, 0.1);
}

.metric-value {
  display: block;
  font-size: 36px;
  font-weight: 700;
  color: var(--accent);
}

.metric-label {
  display: block;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.about-panel {
  background: rgba(12, 18, 33, 0.88);
  border-radius: 24px;
  padding: 32px;
  border: 1px solid rgba(113, 125, 165, 0.18);
  display: grid;
  gap: 24px;
}

.panel-section ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: var(--text-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.contact-meta {
  margin-top: 24px;
  display: grid;
  gap: 6px;
  color: var(--text-secondary);
  font-size: 14px;
}

.contact-meta strong {
  color: var(--text-main);
  font-weight: 600;
}

.contact-meta a {
  color: var(--accent);
  word-break: break-word;
  overflow-wrap: anywhere;
}

.contact-form {
  background: rgba(12, 18, 33, 0.92);
  border-radius: 24px;
  padding: 32px;
  border: 1px solid rgba(113, 125, 165, 0.2);
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--text-secondary);
}

.contact-form input,
.contact-form textarea {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(113, 125, 165, 0.25);
  background: rgba(6, 10, 22, 0.8);
  color: #fff;
  font-size: 14px;
  transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: rgba(113, 255, 213, 0.6);
  box-shadow: 0 0 0 2px rgba(79, 124, 255, 0.25);
}

.site-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: #050711;
  padding: 60px 0 30px;
}

.footer-logo {
  width: 180px;
  max-width: 100%;
  height: auto;
  display: block;
  margin-bottom: 16px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 48px;
  color: var(--text-secondary);
}

.footer-desc {
  margin-top: 14px;
  max-width: 300px;
}

.footer-grid h4 {
  margin-bottom: 12px;
  color: var(--text-main);
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.footer-bottom {
  margin-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  text-align: center;
  color: rgba(255, 255, 255, 0.54);
  font-size: 12px;
}

.back-to-top {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

.back-to-top:hover {
  color: #8bf5ff;
}

.scroll-top-btn {
  position: fixed;
  right: 32px;
  bottom: 32px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--primary), #8a96ff);
  color: #fff;
  padding: 12px 20px;
  font-weight: 600;
  box-shadow: 0 20px 35px rgba(5, 9, 24, 0.45);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 999;
}

.scroll-top-btn::before {
  content: "↑";
  margin-right: 8px;
  font-size: 0.9em;
}

.scroll-top-btn span {
  font-size: 0.9em;
}

.scroll-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-4px);
}

.scroll-top-btn:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.4);
  outline-offset: 4px;
}

.icp-record {
  color: inherit;
  transition: var(--transition);
}

.icp-record:hover {
  color: var(--accent);
}

@media (max-width: 1024px) {
  h1 {
    font-size: 40px;
  }

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

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

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

  .hero .container {
    flex-direction: column;
  }

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

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

@media (max-width: 720px) {
  .site-header .container {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: 76px;
    right: 16px;
    left: 16px;
    display: grid;
    gap: 12px;
    padding: 20px;
    border-radius: 20px;
    background: rgba(7, 12, 28, 0.96);
    border: 1px solid rgba(79, 124, 255, 0.2);
    box-shadow: 0 20px 48px rgba(5, 7, 17, 0.55);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: var(--transition);
    z-index: 240;
  }

  .site-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    display: block;
    padding: 12px 16px;
    border-radius: 14px;
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.04);
  }

  .site-nav a:hover {
    background: rgba(79, 124, 255, 0.18);
  }

  .site-nav .primary {
    border: 1px solid rgba(79, 124, 255, 0.35);
    background: rgba(79, 124, 255, 0.2);
  }

  h1 {
    font-size: 32px;
  }

  .grid.four,
  .grid.three,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 90px 0 60px;
  }

  .section {
    padding: 80px 0;
  }

  body.nav-open {
    overflow: hidden;
  }

  .brand {
    gap: 12px;
  }

  .brand-identity {
    gap: 4px;
  }

  .brand-name {
    font-size: 16px;
  }

  .brand-name-en {
    font-size: 11px;
    letter-spacing: 0.32em;
  }

  .brand-tagline {
    font-size: 12px;
  }

  .contact-meta a,
  .site-footer a {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .locale-switch {
    border-left: none;
    padding: 0;
    margin: 12px 0 0;
    justify-content: center;
  }

  .locale-btn {
    flex: 1;
    min-width: 0;
    width: 100%;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}