:root {
  --bg: #08100f;
  --bg-2: #0d1817;
  --panel: rgba(255, 255, 255, 0.07);
  --panel-strong: rgba(255, 255, 255, 0.11);
  --text: #f4fbf9;
  --muted: #a8bbb8;
  --line: rgba(255, 255, 255, 0.14);
  --cyan: #49d7ff;
  --teal: #36e0bf;
  --gold: #f0c66a;
  --coral: #ff7f6e;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 10%, rgba(54, 224, 191, 0.16), transparent 28rem),
    linear-gradient(180deg, #08100f 0%, #0b1514 46%, #101313 100%);
  line-height: 1.6;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
}

.site-header::before {
  position: fixed;
  inset: 0 0 auto;
  z-index: -1;
  height: 76px;
  content: "";
  background: rgba(8, 16, 15, 0.74);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: #06100f;
  font-weight: 800;
  background: linear-gradient(135deg, var(--teal), var(--cyan) 58%, var(--gold));
  border-radius: 8px;
  box-shadow: 0 12px 34px rgba(54, 224, 191, 0.2);
}

.brand-text {
  display: grid;
  min-width: 0;
}

.brand-text strong {
  overflow: hidden;
  font-size: 0.98rem;
  line-height: 1.15;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.75rem;
}

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

.site-nav a,
.language-switch button {
  padding: 8px 12px;
  color: var(--muted);
  font: inherit;
  font-size: 0.92rem;
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

.site-nav a:hover,
.site-nav a.is-active,
.language-switch button.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.09);
}

.nav-mail {
  color: var(--teal) !important;
}

.language-switch {
  display: inline-flex;
  padding: 3px;
  margin-left: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.language-switch button {
  padding: 6px 9px;
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
  border-radius: 99px;
}

.hero {
  position: relative;
  display: grid;
  min-height: clamp(640px, 92vh, 820px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(8, 16, 15, 0.96) 0%, rgba(8, 16, 15, 0.78) 39%, rgba(8, 16, 15, 0.28) 100%),
    linear-gradient(180deg, rgba(8, 16, 15, 0.18) 0%, rgba(8, 16, 15, 0.96) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  align-self: center;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 80px 0 70px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 8vw, 6.25rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
  line-height: 1.25;
}

.hero-copy,
.page-hero-content p {
  max-width: 650px;
  color: #d7e6e3;
  font-size: clamp(1.04rem, 2vw, 1.28rem);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  font-weight: 800;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  color: #04100f;
  background: linear-gradient(135deg, var(--teal), var(--cyan));
  border-color: transparent;
}

.button-ghost {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.section {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 90px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 30px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.business-list article,
.case-card,
.about-panel,
.stat-panel,
.contact-band {
  background: linear-gradient(180deg, var(--panel-strong), rgba(255, 255, 255, 0.045));
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.feature-card {
  min-height: 244px;
  padding: 24px;
}

.feature-icon {
  display: inline-grid;
  width: 46px;
  height: 46px;
  margin-bottom: 28px;
  place-items: center;
  color: var(--gold);
  font-weight: 900;
  border: 1px solid rgba(240, 198, 106, 0.34);
  border-radius: 8px;
  background: rgba(240, 198, 106, 0.08);
}

.feature-card p,
.process-list p,
.about-panel p,
.business-list p,
.case-copy p,
.site-footer p {
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 54px;
  align-items: start;
  border-top: 1px solid var(--line);
}

.process-list {
  display: grid;
  gap: 14px;
}

.process-list div {
  padding: 20px 0 20px 24px;
  border-left: 2px solid rgba(54, 224, 191, 0.36);
}

.process-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1.05rem;
}

.page-hero {
  position: relative;
  overflow: hidden;
  min-height: 430px;
  border-bottom: 1px solid var(--line);
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(120deg, rgba(8, 16, 15, 0.94), rgba(8, 16, 15, 0.68)),
    url("hero-smart-platform.png") center / cover;
}

.page-hero-bg::after {
  position: absolute;
  inset: auto 0 0;
  height: 52%;
  content: "";
  background: linear-gradient(180deg, transparent, var(--bg));
}

.page-hero-content {
  position: relative;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 150px 0 90px;
}

.page-hero-content h1 {
  font-size: clamp(2.6rem, 6vw, 5.2rem);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 16px;
}

.about-panel {
  padding: 34px;
}

.stat-panel {
  display: grid;
  gap: 1px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.07);
}

.stat-panel div {
  display: grid;
  gap: 4px;
  padding: 24px;
  background: rgba(8, 16, 15, 0.72);
  border-radius: 6px;
}

.stat-panel strong {
  color: var(--cyan);
  font-size: 2rem;
}

.stat-panel span {
  color: var(--muted);
}

.business-section {
  padding-top: 30px;
}

.business-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.business-list article {
  position: relative;
  min-height: 260px;
  padding: 78px 28px 28px;
}

.business-list span {
  position: absolute;
  top: 22px;
  left: 28px;
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  color: #04100f;
  font-weight: 900;
  background: var(--gold);
  border-radius: 8px;
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 30px;
  margin-bottom: 80px;
}

.case-detail {
  padding-bottom: 30px;
}

.case-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  overflow: hidden;
}

.case-visual {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(73, 215, 255, 0.18), transparent 42%),
    linear-gradient(160deg, #111d1c, #172121 48%, #251918);
}

.browser-bar {
  position: absolute;
  top: 22px;
  left: 22px;
  right: 22px;
  display: flex;
  gap: 7px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.browser-bar span {
  width: 9px;
  height: 9px;
  background: var(--coral);
  border-radius: 50%;
}

.browser-bar span:nth-child(2) {
  background: var(--gold);
}

.browser-bar span:nth-child(3) {
  background: var(--teal);
}

.avatar-orbit {
  position: absolute;
  inset: 24% 15% 20%;
  display: grid;
  place-items: center;
  border: 1px solid rgba(73, 215, 255, 0.2);
  border-radius: 50%;
}

.avatar-core {
  width: 128px;
  height: 128px;
  background:
    radial-gradient(circle at 50% 35%, #f4fbf9 0 12%, transparent 13%),
    radial-gradient(circle at 50% 75%, rgba(244, 251, 249, 0.9) 0 28%, transparent 29%),
    linear-gradient(145deg, rgba(73, 215, 255, 0.78), rgba(54, 224, 191, 0.42));
  border: 1px solid rgba(255, 255, 255, 0.36);
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(54, 224, 191, 0.38);
}

.signal {
  position: absolute;
  border: 1px solid rgba(73, 215, 255, 0.22);
  border-radius: 50%;
}

.signal-one {
  inset: 18%;
}

.signal-two {
  inset: 4%;
  border-color: rgba(240, 198, 106, 0.18);
}

.case-lines {
  position: absolute;
  right: 28px;
  bottom: 28px;
  left: 28px;
  display: grid;
  gap: 10px;
}

.case-lines span {
  height: 10px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.22), transparent);
  border-radius: 99px;
}

.case-lines span:nth-child(2) {
  width: 76%;
}

.case-lines span:nth-child(3) {
  width: 52%;
}

.case-copy {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 42px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 10px 0 28px;
}

.tag-list span {
  padding: 7px 10px;
  color: var(--gold);
  font-size: 0.86rem;
  border: 1px solid rgba(240, 198, 106, 0.28);
  border-radius: 8px;
  background: rgba(240, 198, 106, 0.07);
}

.site-footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 44px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer strong {
  color: var(--text);
}

.footer-links {
  display: grid;
  gap: 8px;
  text-align: right;
}

.footer-links a {
  color: var(--teal);
}

@media (max-width: 860px) {
  .site-header {
    width: min(100% - 28px, 1160px);
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 68px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    background: rgba(8, 16, 15, 0.96);
    border: 1px solid var(--line);
    border-radius: 8px;
    box-shadow: var(--shadow);
  }

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

  .site-nav a,
  .language-switch {
    width: 100%;
  }

  .language-switch {
    justify-content: stretch;
  }

  .language-switch button {
    flex: 1;
  }

  h1 {
    font-size: clamp(2.65rem, 13vw, 4.5rem);
  }

  .hero {
    min-height: 760px;
  }

  .hero-overlay {
    background:
      linear-gradient(180deg, rgba(8, 16, 15, 0.72) 0%, rgba(8, 16, 15, 0.94) 62%, rgba(8, 16, 15, 0.99) 100%),
      linear-gradient(90deg, rgba(8, 16, 15, 0.7), rgba(8, 16, 15, 0.2));
  }

  .hero-content,
  .section,
  .page-hero-content,
  .site-footer {
    width: min(100% - 28px, 1160px);
  }

  .feature-grid,
  .split-section,
  .about-grid,
  .business-list,
  .case-card {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 66px 0;
  }

  .case-visual {
    min-height: 330px;
  }

  .contact-band,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-links {
    text-align: left;
  }
}

@media (max-width: 520px) {
  .brand-text strong {
    max-width: 210px;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero {
    min-height: 720px;
  }

  .page-hero-content {
    padding-top: 124px;
  }

  .feature-card,
  .about-panel,
  .case-copy,
  .contact-band {
    padding: 24px;
  }
}