:root {
  --bg: #0f1117;
  --bg-soft: #141925;
  --panel: #172232;
  --panel-alt: #1b1f31;
  --panel-green: #18261e;
  --text: #f6f7f9;
  --muted: #94a3b8;
  --muted-2: #657080;
  --line: rgba(133, 148, 173, 0.18);
  --gold: #f0c419;
  --cyan: #5ad7ff;
  --purple: #b89cff;
  --orange: #ffb86b;
  --green: #67e8a5;
  --shadow: 0 26px 80px rgba(0, 0, 0, 0.34);
  --radius-lg: 8px;
  --radius-md: 8px;
  --radius-sm: 8px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top right, rgba(90, 215, 255, 0.08), transparent 28%),
    radial-gradient(circle at top left, rgba(240, 196, 25, 0.08), transparent 22%),
    linear-gradient(180deg, #0f1117 0%, #10131d 44%, #0d1016 100%);
  color: var(--text);
  font-family: "IBM Plex Sans", "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

body.menu-open {
  overflow: hidden;
}

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

h1,
h2,
h3,
p,
ul {
  margin: 0;
}

ul {
  padding-left: 1.15rem;
}

.site-shell {
  position: relative;
  overflow: clip;
}

.site-shell::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.34), transparent 80%);
  pointer-events: none;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.section {
  padding: 90px 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(10, 12, 18, 0.76);
  border-bottom: 1px solid rgba(133, 148, 173, 0.08);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, #232a3d, #111722);
  border: 1px solid rgba(240, 196, 25, 0.18);
  color: var(--gold);
  font-family: "IBM Plex Mono", monospace;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand-text {
  display: grid;
  gap: 0.12rem;
}

.brand-text strong {
  font-family: "Cormorant Garamond", "PingFang SC", "Microsoft YaHei", serif;
  font-size: 1.42rem;
  font-weight: 600;
  letter-spacing: 0;
}

.brand-text span {
  color: var(--muted);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.76rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  color: var(--muted);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.9rem;
}

.nav-links a {
  position: relative;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.38rem;
  width: 100%;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.lang-switch {
  display: flex;
  gap: 0.2rem;
}

.lang-switch--mobile {
  display: none;
}

.lang-switch button {
  border: 1px solid rgba(133, 148, 173, 0.18);
  background: transparent;
  color: var(--muted);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.72rem;
  padding: 0.32rem 0.56rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.lang-switch button:hover,
.lang-switch button:focus-visible {
  border-color: rgba(240, 196, 25, 0.28);
  color: var(--text);
}

.lang-switch button.active {
  border-color: var(--gold);
  background: rgba(240, 196, 25, 0.12);
  color: var(--gold);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0.3rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--text);
  margin: 6px 0;
  transition: transform 180ms ease;
}

.hero {
  position: relative;
  padding-top: 58px;
}

.hero-gridlines {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(90, 215, 255, 0.12), transparent 0 18rem),
    radial-gradient(circle at 80% 24%, rgba(184, 156, 255, 0.11), transparent 0 8rem);
  pointer-events: none;
}

.hero-grid,
.intro-grid,
.capability-grid,
.security-grid,
.team-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  align-items: start;
}

.hero-copy {
  display: flex;
  flex-direction: column;
}

.eyebrow {
  color: var(--gold);
  font-family: "Barlow Condensed", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.hero-copy h1,
.section-heading h2,
.cta-card h2,
.security-copy h2 {
  font-family: "Cormorant Garamond", "PingFang SC", "Microsoft YaHei", serif;
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy h1 {
  font-size: clamp(1.5rem, 3vw, 2.9rem);
  max-width: 11em;
}

.section-heading h2,
.cta-card h2,
.security-copy h2 {
  font-size: clamp(1.1rem, 2vw, 1.95rem);
}

.hero-text,
.intro-copy p,
.service-card p,
.capability-card p,
.process-card p,
.solution-card li,
.security-copy p,
.security-points p,
.cta-card p,
.team-card p {
  color: var(--muted);
  line-height: 1.78;
  font-size: 1rem;
}

.hero-text {
  max-width: 44rem;
  margin-top: 1.4rem;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-actions {
  margin-top: 2.4rem;
  padding-top: 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 1.4rem;
  border-radius: 999px;
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.94rem;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

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

.button-primary {
  background: var(--gold);
  color: #10131b;
  font-weight: 600;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #f6d85e;
}

.button-secondary {
  border: 1px solid rgba(133, 148, 173, 0.22);
  color: var(--text);
  background: rgba(255, 255, 255, 0.02);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: rgba(240, 196, 25, 0.32);
  background: rgba(255, 255, 255, 0.04);
}

.hero-marquee {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.hero-marquee span,
.panel-label,
.service-tag,
.solution-file {
  border: 1px solid rgba(133, 148, 173, 0.2);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  color: var(--cyan);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.78rem;
  padding: 0.7rem 1rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin-top: 1.8rem;
}

.hero-metrics li,
.service-card,
.capability-card,
.process-card,
.solution-card,
.team-card,
.cta-card,
.security-points div,
.security-panel,
.inline-code-note,
.terminal-card,
.hero-brief,
.capability-code {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-metrics li,
.capability-card,
.process-card,
.team-card,
.security-points div {
  padding: 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(23, 34, 50, 0.6);
  backdrop-filter: blur(14px);
}

.hero-metrics strong {
  display: block;
  color: var(--text);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 1rem;
  margin-bottom: 0.45rem;
}

.hero-panel {
  display: grid;
  gap: 1rem;
}

.terminal-card,
.hero-brief,
.capability-code,
.security-panel {
  border-radius: var(--radius-lg);
  background: rgba(16, 19, 27, 0.88);
  overflow: hidden;
}

.terminal-topbar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid rgba(133, 148, 173, 0.14);
  background: rgba(255, 255, 255, 0.02);
}

.terminal-topbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
}

.terminal-topbar span:first-child {
  background: #f87171;
}

.terminal-topbar span:nth-child(2) {
  background: #fbbf24;
}

.terminal-topbar span:nth-child(3) {
  background: #34d399;
}

.terminal-topbar p {
  margin-left: auto;
  color: var(--muted);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.8rem;
}

.terminal-body,
.capability-code,
.security-code,
.contact-code {
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.93rem;
  line-height: 1.8;
}

.terminal-body,
.capability-code,
.security-code {
  padding: 1.3rem 1.4rem 1.45rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.contact-code {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.token-keyword,
.service-tag,
.panel-index {
  color: var(--purple);
}

.token-name {
  color: var(--cyan);
}

.token-prop {
  color: var(--text);
}

.token-string,
.text-link {
  color: var(--orange);
}

.token-func {
  color: var(--green);
}

.hero-brief {
  padding: 1.4rem;
}

.brief-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.brief-grid article {
  padding-top: 1rem;
  border-top: 1px solid rgba(133, 148, 173, 0.12);
}

.panel-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 28px;
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.76rem;
  border: 1px solid rgba(184, 156, 255, 0.22);
  border-radius: 999px;
}

.brief-grid h3,
.service-card h3,
.capability-card h3,
.process-card h3,
.solution-card h3,
.team-card h3,
.security-points strong {
  margin: 0.6rem 0 0.35rem;
  font-family: "Barlow Condensed", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: 0;
}

.section-heading {
  max-width: 46rem;
  margin-bottom: 2.4rem;
}

.intro-copy {
  display: grid;
  gap: 1rem;
  align-content: center;
}

.inline-code-note {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

.inline-code-note span {
  color: var(--gold);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.82rem;
}

.services-grid,
.process-grid,
.solution-grid,
.team-list {
  display: grid;
  gap: 1.2rem;
}

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

.service-card,
.solution-card,
.cta-card {
  padding: 1.5rem;
}

.service-card {
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(23, 34, 50, 0.92), rgba(17, 23, 34, 0.92));
}

.service-summary {
  margin: 0.9rem 0 1rem;
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  color: var(--muted);
}

.service-card ul {
  display: grid;
  gap: 0.78rem;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.code-title {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  margin-top: 0.8rem;
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 1rem;
}

.text-link {
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.9rem;
}

.capability-stack {
  display: grid;
  gap: 1rem;
}

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

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

.solution-card {
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, rgba(27, 31, 49, 0.92), rgba(18, 21, 33, 0.92));
}

.solution-file {
  display: inline-flex;
  margin-bottom: 1rem;
}

.solution-card ul {
  display: grid;
  gap: 0.85rem;
  margin-top: 1rem;
}

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

.process-timeline::before {
  content: "";
  position: absolute;
  inset: 34px 0 auto;
  height: 1px;
  background: linear-gradient(90deg, rgba(133, 148, 173, 0.08), rgba(240, 196, 25, 0.3), rgba(133, 148, 173, 0.08));
}

.process-card {
  position: relative;
  background: rgba(20, 25, 37, 0.8);
}

.process-card span,
.team-card span {
  color: var(--gold);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.82rem;
}

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

.team-card {
  background: rgba(23, 34, 50, 0.72);
  border-radius: var(--radius-md);
}

.security-panel {
  padding: 1.4rem;
}

.security-panel .solution-file {
  margin-bottom: 1rem;
}

.security-points {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.cta-card {
  border-radius: var(--radius-lg);
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
  background:
    radial-gradient(circle at top, rgba(240, 196, 25, 0.11), transparent 48%),
    linear-gradient(180deg, rgba(23, 34, 50, 0.88), rgba(15, 17, 23, 0.96));
}

.cta-card p {
  max-width: 44rem;
  margin: 1rem auto 0;
}

.contact-code {
  max-width: 34rem;
  margin: 1.5rem auto 0;
  padding: 1rem 1.2rem;
  border: 1px solid rgba(133, 148, 173, 0.14);
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.16);
  text-align: left;
}

.site-footer {
  padding: 0 0 44px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.2rem;
  border-top: 1px solid rgba(133, 148, 173, 0.1);
  color: var(--muted);
  font-family: "IBM Plex Mono", "PingFang SC", "Microsoft YaHei", monospace;
  font-size: 0.86rem;
}

.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 500ms ease, transform 500ms ease;
}

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

@media (max-width: 1100px) {
  .hero-grid,
  .intro-grid,
  .capability-grid,
  .security-grid,
  .team-grid,
  .services-grid,
  .solution-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .team-list,
  .capability-list {
    grid-template-columns: 1fr;
  }

  .hero-copy h1 {
    max-width: none;
  }

  .process-timeline::before {
    display: none;
  }
}

@media (max-width: 720px) {
  .section {
    padding: 56px 0;
  }

  .hero {
    padding-top: 32px;
  }

  .nav {
    min-height: 64px;
    flex-wrap: wrap;
  }

  .brand-mark {
    width: 38px;
    height: 38px;
  }

  .brand-text strong {
    font-size: 1.2rem;
  }

  .brand-text span {
    font-size: 0.68rem;
  }

  .lang-switch--desktop {
    display: none;
  }

  .lang-switch--mobile {
    display: flex;
    justify-content: center;
    padding: 0.6rem 0 0.4rem;
    border-top: 1px solid rgba(133, 148, 173, 0.1);
    margin-top: 0.4rem;
  }

  .lang-switch--mobile button {
    font-size: 0.72rem;
    padding: 0.35rem 0.6rem;
  }

  .nav-toggle {
    display: block;
    position: relative;
    z-index: 25;
  }

  .nav-links {
    position: fixed;
    inset: 64px 0.6rem auto;
    display: grid;
    gap: 0.2rem;
    padding: 0.8rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: rgba(14, 18, 28, 0.98);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 180ms ease, transform 180ms ease;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
  }

  .nav-links a {
    padding: 0.9rem 0.8rem;
    border-radius: var(--radius-sm);
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: rgba(255, 255, 255, 0.04);
  }

  body.menu-open .nav-links {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  body.menu-open .nav-toggle span:first-child {
    transform: translateY(8px) rotate(45deg);
  }

  body.menu-open .nav-toggle span:last-child {
    transform: translateY(-8px) rotate(-45deg);
  }

  .container {
    width: min(var(--container), calc(100% - 1.6rem));
  }

  .hero-copy h1 {
    font-size: clamp(1.4rem, 7vw, 2.1rem);
  }

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

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

  .footer-row {
    flex-direction: column;
  }

  .brief-grid h3,
  .service-card h3,
  .capability-card h3,
  .process-card h3,
  .solution-card h3,
  .team-card h3 {
    font-size: 1.25rem;
  }

  .inline-code-note {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 44px 0;
  }

  .hero {
    padding-top: 18px;
  }

  .container {
    width: min(var(--container), calc(100% - 1.2rem));
  }

  .hero-copy h1 {
    font-size: 1.45rem;
  }

  .section-heading h2,
  .cta-card h2,
  .security-copy h2 {
    font-size: 1.2rem;
  }

  .hero-text,
  .intro-copy p,
  .service-card p,
  .capability-card p,
  .process-card p,
  .solution-card li,
  .security-copy p,
  .security-points p,
  .cta-card p,
  .team-card p {
    font-size: 0.92rem;
    line-height: 1.7;
  }

  .terminal-body,
  .capability-code,
  .security-code,
  .contact-code {
    font-size: 0.78rem;
    line-height: 1.65;
  }

  .hero-marquee span {
    font-size: 0.7rem;
    padding: 0.5rem 0.7rem;
  }

  .button {
    min-height: 46px;
    font-size: 0.88rem;
    padding: 0 1rem;
  }

  .service-card,
  .solution-card,
  .cta-card {
    padding: 1.15rem;
  }
}