:root {
  color-scheme: dark;
  --bg: #050b14;
  --surface: rgba(13, 26, 43, 0.72);
  --surface-strong: rgba(15, 31, 52, 0.94);
  --line: rgba(148, 197, 255, 0.16);
  --text: #f7fbff;
  --muted: #a9bbce;
  --cyan: #67e8f9;
  --blue: #60a5fa;
  --violet: #a78bfa;
  --radius: 24px;
  --shadow: 0 30px 90px rgba(0, 15, 35, 0.42);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

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

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 8%, rgba(34, 211, 238, 0.12), transparent 28rem),
    radial-gradient(circle at 88% 14%, rgba(139, 92, 246, 0.14), transparent 30rem),
    linear-gradient(180deg, #07101d 0%, #050b14 45%, #07111d 100%);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img { max-width: 100%; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 100;
  padding: 10px 14px;
  transform: translateY(-160%);
  border-radius: 10px;
  background: white;
  color: #07101d;
  font-weight: 800;
  transition: transform 160ms ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(148, 197, 255, 0.1);
  background: rgba(5, 11, 20, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
}

.header-inner,
.section,
.hero,
.footer-inner {
  width: min(1180px, calc(100% - 40px));
  margin-inline: auto;
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(164, 239, 255, 0.6);
  border-radius: 10px;
  background: linear-gradient(145deg, rgba(34, 211, 238, 0.34), rgba(99, 102, 241, 0.42));
  box-shadow: 0 8px 28px rgba(34, 211, 238, 0.18);
  color: white;
  font-size: 17px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 30px);
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 650;
  transition: color 160ms ease;
}

.nav-links a:hover { color: white; }

.language-link {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
}

.hero {
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(360px, 0.98fr);
  align-items: center;
  gap: clamp(30px, 6vw, 78px);
  padding-block: 88px 76px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  padding: 7px 12px;
  border: 1px solid rgba(103, 232, 249, 0.24);
  border-radius: 999px;
  background: rgba(34, 211, 238, 0.07);
  color: #b9f6ff;
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0.04em;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  content: "";
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(103, 232, 249, 0.9);
}

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

h1 {
  max-width: 760px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6.2vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.055em;
}

.gradient-text {
  color: transparent;
  background: linear-gradient(100deg, #eafcff 4%, #67e8f9 38%, #8bb8ff 66%, #c4b5fd 96%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-copy > p:not(.eyebrow) {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 20px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 13px;
  text-decoration: none;
  font-weight: 820;
  line-height: 1.2;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.button-primary {
  border-color: transparent;
  background: linear-gradient(110deg, #67e8f9, #93c5fd 52%, #c4b5fd);
  box-shadow: 0 18px 44px rgba(59, 130, 246, 0.2);
  color: #06101c;
}

.button-secondary { background: rgba(255, 255, 255, 0.045); }
.button-secondary:hover { border-color: rgba(103, 232, 249, 0.42); }

.hero-visual {
  position: relative;
  min-height: 450px;
  display: grid;
  place-items: center;
  isolation: isolate;
}

.hero-visual::before {
  position: absolute;
  z-index: -2;
  width: min(520px, 95%);
  aspect-ratio: 1;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.08) 46%, transparent 70%);
  filter: blur(4px);
}

.visual-card {
  width: 100%;
  padding: 24px 18px 18px;
  overflow: hidden;
  border: 1px solid rgba(145, 205, 255, 0.2);
  border-radius: 30px;
  background: linear-gradient(145deg, rgba(21, 48, 75, 0.76), rgba(12, 20, 37, 0.86));
  box-shadow: var(--shadow);
}

.visual-card img {
  width: 100%;
  min-height: 230px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 24px 36px rgba(4, 15, 34, 0.48));
}

.visual-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-top: 8px;
}

.visual-steps span {
  padding: 8px 5px;
  border: 1px solid rgba(103, 232, 249, 0.13);
  border-radius: 9px;
  background: rgba(5, 13, 25, 0.55);
  color: #c8d8e9;
  text-align: center;
  font-size: 11px;
  font-weight: 700;
}

.proof-strip {
  border-block: 1px solid rgba(148, 197, 255, 0.1);
  background: rgba(8, 18, 31, 0.58);
}

.proof-inner {
  width: min(1000px, calc(100% - 40px));
  margin-inline: auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding-block: 20px;
}

.proof-inner span {
  padding: 5px 22px;
  color: #bfd0e1;
  text-align: center;
  font-size: 13px;
  font-weight: 720;
}

.proof-inner span + span { border-left: 1px solid var(--line); }

.section { padding-block: 108px; }
.section-compact { padding-block: 84px; }

.section-heading {
  max-width: 720px;
  margin-bottom: 42px;
}

.section-heading small {
  display: block;
  margin-bottom: 9px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.section-heading h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4.5vw, 48px);
  line-height: 1.14;
  letter-spacing: -0.04em;
}

.section-heading p { color: var(--muted); }

.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.capability-card,
.workflow-card,
.faq-list details {
  border: 1px solid var(--line);
  background: var(--surface);
  box-shadow: 0 16px 50px rgba(0, 8, 22, 0.14);
}

.capability-card {
  min-height: 270px;
  display: flex;
  flex-direction: column;
  padding: 24px;
  border-radius: var(--radius);
}

.capability-icon {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border: 1px solid rgba(103, 232, 249, 0.2);
  border-radius: 14px;
  background: linear-gradient(145deg, rgba(34, 211, 238, 0.16), rgba(99, 102, 241, 0.15));
  color: #bff7ff;
  font-size: 18px;
  font-weight: 900;
}

.capability-card h3 { margin-bottom: 9px; font-size: 19px; }
.capability-card p { margin-bottom: 20px; color: var(--muted); font-size: 14px; }

.text-link {
  margin-top: auto;
  color: #a9eff9;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
}

.workflow-shell {
  padding: clamp(26px, 5vw, 58px);
  border: 1px solid var(--line);
  border-radius: 32px;
  background:
    linear-gradient(130deg, rgba(17, 46, 72, 0.68), rgba(20, 20, 47, 0.72)),
    var(--surface-strong);
  box-shadow: var(--shadow);
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.workflow-card { padding: 24px; border-radius: 18px; }
.step-number { color: var(--cyan); font-size: 12px; font-weight: 900; letter-spacing: 0.1em; }
.workflow-card h3 { margin: 16px 0 9px; }
.workflow-card p { margin-bottom: 0; color: var(--muted); font-size: 14px; }

.faq-shell {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(28px, 6vw, 80px);
  align-items: start;
}

.faq-list { display: grid; gap: 11px; }

.faq-list details { padding: 0 20px; border-radius: 15px; }
.faq-list summary { padding-block: 18px; cursor: pointer; font-weight: 780; }
.faq-list details p { padding: 0 0 19px; margin: 0; color: var(--muted); font-size: 14px; }

.final-cta {
  padding: clamp(34px, 7vw, 72px);
  border: 1px solid rgba(121, 221, 255, 0.23);
  border-radius: 32px;
  background:
    radial-gradient(circle at 88% 20%, rgba(139, 92, 246, 0.25), transparent 19rem),
    linear-gradient(125deg, rgba(12, 47, 69, 0.92), rgba(20, 20, 52, 0.94));
  box-shadow: var(--shadow);
}

.final-cta h2 { max-width: 760px; margin-bottom: 15px; font-size: clamp(32px, 5vw, 54px); line-height: 1.12; }
.final-cta p { max-width: 680px; margin-bottom: 28px; color: var(--muted); }

.site-footer {
  margin-top: 40px;
  border-top: 1px solid rgba(148, 197, 255, 0.1);
}

.footer-inner {
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: #8398ad;
  font-size: 13px;
}

.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: white; }

a:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(103, 232, 249, 0.75);
  outline-offset: 4px;
}

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr; padding-top: 70px; }
  .hero-copy { text-align: center; }
  .hero-copy > p:not(.eyebrow), .actions { margin-inline: auto; justify-content: center; }
  .hero-visual { min-height: 370px; }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .faq-shell { grid-template-columns: 1fr; gap: 8px; }
}

@media (max-width: 680px) {
  .header-inner, .section, .hero, .footer-inner { width: min(100% - 28px, 1180px); }
  .nav-links a:not(.language-link) { display: none; }
  .hero { min-height: auto; padding-block: 58px 62px; }
  h1 { font-size: clamp(38px, 12vw, 56px); }
  .hero-visual { min-height: 300px; }
  .visual-card { padding: 14px 9px 12px; border-radius: 22px; }
  .visual-card img { min-height: 180px; }
  .visual-steps { grid-template-columns: repeat(2, 1fr); }
  .proof-inner { grid-template-columns: 1fr; padding-block: 14px; }
  .proof-inner span + span { border-top: 1px solid var(--line); border-left: 0; }
  .section { padding-block: 76px; }
  .section-compact { padding-block: 58px; }
  .capability-grid, .workflow-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 225px; }
  .footer-inner { align-items: flex-start; flex-direction: column; padding-block: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}