:root {
  --bg: #050505;
  --bg-elevated: rgba(17, 17, 19, 0.88);
  --bg-card: rgba(12, 15, 20, 0.86);
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(110, 231, 255, 0.28);
  --text: #f5f7fa;
  --text-muted: #a4adbb;
  --accent: #78e4ff;
  --accent-deep: #0f3551;
  --accent-soft: rgba(120, 228, 255, 0.12);
  --gold: #f0c46a;
  --max-width: 1240px;
  --radius: 28px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(120, 228, 255, 0.12), transparent 28%),
    radial-gradient(circle at 90% 12%, rgba(240, 196, 106, 0.08), transparent 24%),
    linear-gradient(180deg, #040404 0%, #080b10 38%, #040404 100%);
  color: var(--text);
  font-family: "General Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
  padding: 20px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
  mask-image: radial-gradient(circle at center, black 40%, transparent 88%);
}

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

button,
input,
select,
textarea {
  font: inherit;
}

.page-shell {
  position: relative;
}

.site-header {
  position: sticky;
  top: 20px;
  z-index: 50;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(8, 10, 14, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(120, 228, 255, 0.18), rgba(255, 255, 255, 0.02));
  color: var(--accent);
  font-family: "Satoshi", sans-serif;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.brand-name,
.brand-subtitle {
  margin: 0;
}

.brand-name {
  font-family: "Satoshi", "PingFang SC", sans-serif;
  font-size: 1rem;
  font-weight: 700;
}

.brand-subtitle {
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  color: var(--text-muted);
  transition: color 220ms ease, opacity 220ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
  transition: transform 220ms ease, opacity 220ms ease;
}

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

.hero {
  padding: 68px 0 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr);
  gap: 32px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.status-card,
.capability-card,
.solution-card,
.case-card,
.flow-card,
.contact-panel {
  border: 1px solid var(--line);
  background: var(--bg-card);
  box-shadow: var(--shadow);
}

.hero-copy {
  padding: 44px;
  border-radius: 34px;
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto 24px 24px auto;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(120, 228, 255, 0.24), transparent 70%);
  pointer-events: none;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--gold);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2,
.contact-copy h2 {
  margin: 0;
  font-family: "Satoshi", "PingFang SC", sans-serif;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.96;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 7vw, 6.4rem);
}

.hero-text,
.section-heading p,
.contact-copy p,
.solution-card p,
.case-card p,
.flow-card p,
.capability-card p,
.panel-card p {
  color: var(--text-muted);
  line-height: 1.75;
}

.hero-text {
  margin: 28px 0 0;
  max-width: 48rem;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

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

.button-primary {
  background: var(--text);
  color: #050505;
}

.button-secondary {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.button-block {
  width: 100%;
}

.signal-strip {
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.signal-strip li {
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.02);
}

.hero-panel {
  padding: 22px;
  border-radius: 34px;
}

.hero-panel-grid {
  height: 100%;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel-card {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015)),
    rgba(9, 12, 16, 0.92);
}

.panel-emphasis {
  grid-column: span 2;
  min-height: 260px;
  background:
    linear-gradient(135deg, rgba(120, 228, 255, 0.12), rgba(255, 255, 255, 0.02)),
    rgba(9, 12, 16, 0.92);
}

.panel-kicker,
.panel-index,
.card-no,
.solution-tag,
.flow-card span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-family: "Satoshi", sans-serif;
  font-size: 0.88rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.panel-card h2,
.panel-card h3,
.capability-card h3,
.solution-card h3,
.case-card h3,
.flow-card h3 {
  margin: 14px 0 0;
  font-family: "Satoshi", "PingFang SC", sans-serif;
}

.status-band {
  padding: 18px 0 32px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.status-card {
  padding: 24px;
  border-radius: 24px;
}

.status-card span {
  display: block;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.status-card strong {
  font-size: 1.08rem;
  font-weight: 600;
  line-height: 1.5;
}

.section-heading {
  max-width: 760px;
  padding: 70px 0 28px;
}

.section-heading h2,
.contact-copy h2 {
  font-size: clamp(2.2rem, 5vw, 4rem);
}

.capability-grid,
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.capability-card,
.case-card,
.flow-card {
  padding: 26px;
  border-radius: 28px;
  transition: transform 220ms ease, border-color 220ms ease, background 220ms ease;
}

.capability-card:hover,
.capability-card:focus-within,
.case-card:hover,
.flow-card:hover,
.solution-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

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

.solution-card {
  padding: 30px;
  border-radius: 30px;
  min-height: 320px;
  transition: transform 220ms ease, border-color 220ms ease;
}

.solution-card ul {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.solution-card li::before {
  content: "•";
  color: var(--gold);
  margin-right: 10px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.delivery-flow {
  padding-bottom: 12px;
}

.contact {
  padding: 72px 0 60px;
}

.contact-panel {
  padding: 32px;
  border-radius: 36px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.85fr);
  gap: 28px;
}

.contact-list {
  margin-top: 28px;
  display: grid;
  gap: 12px;
}

.contact-list p {
  margin: 0;
  width: fit-content;
  color: var(--text);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.02);
}

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

.field label {
  color: var(--text);
  font-size: 0.95rem;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 18px;
  padding: 14px 16px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.field textarea {
  resize: vertical;
  min-height: 140px;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #7e8898;
}

.form-feedback {
  min-height: 24px;
  margin: 0;
  color: var(--accent);
}

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 0 30px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 18px;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

.footer-copy,
.footer-records {
  display: grid;
  gap: 8px;
}

.footer-records {
  justify-items: end;
  text-align: right;
}

.record-code {
  color: var(--text);
  font-family: "Satoshi", "Consolas", monospace;
  letter-spacing: 0.04em;
}

.js-ready .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 720ms ease, transform 720ms ease;
}

.js-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

@media (max-width: 1100px) {
  .hero,
  .contact-panel,
  .solution-layout,
  .case-grid,
  .capability-grid,
  .flow-grid,
  .status-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 840px) {
  body {
    padding: 14px;
  }

  .site-header {
    padding: 14px 16px;
    flex-wrap: wrap;
  }

  .menu-toggle {
    display: inline-grid;
    place-items: center;
    margin-left: auto;
  }

  .site-nav {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding-top: 10px;
  }

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

  .hero-copy,
  .hero-panel,
  .contact-panel {
    padding: 24px;
  }

  .hero-panel-grid {
    grid-template-columns: 1fr;
  }

  .panel-emphasis {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .status-band,
  .capability-grid,
  .solution-layout,
  .case-grid,
  .flow-grid,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 40px;
  }

  .hero h1 {
    max-width: none;
    font-size: clamp(2.6rem, 14vw, 4.2rem);
  }

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

  .button {
    width: 100%;
  }

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

  .footer-records {
    justify-items: start;
    text-align: left;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .js-ready .reveal {
    opacity: 1;
    transform: none;
  }
}