:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0b1829;
  --panel: rgba(15, 31, 51, 0.76);
  --panel-solid: #0f1f33;
  --line: rgba(153, 184, 216, 0.18);
  --text: #ecf4fb;
  --muted: #9bb0c5;
  --cyan: #59d8e6;
  --amber: #ffbd69;
  --green: #6ee7a8;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 8%, rgba(89, 216, 230, 0.1), transparent 26rem),
    radial-gradient(circle at 12% 30%, rgba(255, 189, 105, 0.07), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  transform: translateY(-150%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  width: 100%;
  min-height: 74px;
  padding: 12px max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.82);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: max-content;
  color: var(--text);
  font-weight: 720;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(89, 216, 230, 0.48);
  border-radius: 10px;
  background: rgba(89, 216, 230, 0.08);
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
}

nav {
  display: flex;
  gap: 28px;
}

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

nav a:hover,
nav a:focus-visible {
  color: var(--cyan);
}

.language-toggle {
  justify-self: end;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}

.language-toggle:hover,
.language-toggle:focus-visible,
.language-current {
  color: var(--cyan);
}

.hero,
.section,
.contact-section,
footer {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: clamp(48px, 8vw, 112px);
  align-items: center;
  min-height: calc(100vh - 74px);
  padding-block: 84px;
}

.eyebrow,
.section-index,
.project-meta,
.system-line span {
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 820px;
  margin-bottom: 26px;
  font-size: clamp(54px, 8.2vw, 106px);
  font-weight: 720;
  letter-spacing: -0.055em;
  line-height: 0.94;
}

h1 span {
  display: block;
}

h1 .accent {
  color: var(--amber);
}

.hero-summary {
  max-width: 680px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

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

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.contact-email {
  margin-top: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
}

.contact-email a {
  color: var(--muted);
  text-underline-offset: 4px;
}

.contact-email a:hover,
.contact-email a:focus-visible {
  color: var(--cyan);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

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

.button-primary {
  background: var(--cyan);
  color: #041018;
}

.button-primary:hover {
  background: #78e5ef;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.025);
  color: var(--text);
}

.button-secondary:hover {
  border-color: rgba(89, 216, 230, 0.5);
}

.system-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(145deg, rgba(17, 37, 59, 0.9), rgba(8, 20, 34, 0.92));
  box-shadow: var(--shadow);
}

.terminal-bar {
  display: flex;
  gap: 7px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.terminal-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #39506a;
}

.terminal-bar span:first-child {
  background: var(--amber);
}

.system-line {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 10px;
  padding: 15px 22px;
  border-bottom: 1px solid rgba(153, 184, 216, 0.08);
}

.system-line strong {
  color: #c7d6e4;
  font-size: 14px;
  font-weight: 580;
}

.system-line.active {
  background: rgba(110, 231, 168, 0.06);
}

.system-line.active span,
.system-line.active strong {
  color: var(--green);
}

.system-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 19px 22px;
  color: var(--muted);
  font-size: 12px;
}

.system-status > span:first-child {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}

.section {
  padding-block: 108px;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr) minmax(260px, 0.72fr);
  gap: 40px;
  align-items: start;
  margin-bottom: 62px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(36px, 5vw, 64px);
  letter-spacing: -0.04em;
  line-height: 1.03;
}

.section-heading > p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.capability-card {
  position: relative;
  min-height: 260px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(13, 29, 47, 0.42);
}

.capability-number {
  position: absolute;
  top: 28px;
  right: 30px;
  color: rgba(89, 216, 230, 0.28);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 30px;
}

.capability-card h3 {
  max-width: 80%;
  margin-bottom: 44px;
  font-size: 24px;
}

.capability-card p {
  max-width: 520px;
  margin-bottom: 0;
  color: var(--muted);
}

.projects-section {
  padding-bottom: 120px;
}

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

.project-card {
  display: flex;
  flex-direction: column;
  min-height: 390px;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  transition: transform 180ms ease, border-color 180ms ease;
}

.project-card:hover {
  border-color: rgba(89, 216, 230, 0.35);
  transform: translateY(-3px);
}

.project-featured {
  grid-column: 1 / -1;
  min-height: 420px;
  background:
    linear-gradient(110deg, rgba(89, 216, 230, 0.09), transparent 58%),
    var(--panel-solid);
}

.project-meta {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--cyan);
}

.project-meta span:last-child {
  color: var(--muted);
}

.project-card h3 {
  margin: 46px 0 18px;
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: -0.035em;
}

.project-card > p {
  max-width: 780px;
  color: var(--muted);
}

.project-visual {
  margin: 24px 0 0;
  max-width: 980px;
}

.project-visual img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #07111d;
}

.project-visual figcaption {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: auto 0 28px;
  padding: 26px 0 0;
  list-style: none;
}

.tag-list li {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: #b7c8d8;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
}

.project-link {
  width: max-content;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 720;
  text-decoration: none;
}

.project-link:hover {
  text-decoration: underline;
  text-underline-offset: 5px;
}

.method-section .section-heading {
  grid-template-columns: 160px 1fr;
}

.method-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0 0 60px;
  padding: 0;
  list-style: none;
}

.method-flow li {
  min-height: 220px;
  padding: 24px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.method-flow li:first-child {
  border-left: 1px solid var(--line);
}

.method-flow span {
  display: block;
  margin-bottom: 52px;
  color: var(--cyan);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
}

.method-flow strong {
  display: block;
  margin-bottom: 12px;
  font-size: 18px;
}

.method-flow p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

blockquote {
  max-width: 880px;
  margin: 0;
  padding: 0 0 0 28px;
  border-left: 3px solid var(--amber);
}

blockquote p {
  margin: 0;
  color: #cdd9e5;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.45;
}

.contact-section {
  margin-block: 80px;
  padding: clamp(38px, 7vw, 78px);
  border: 1px solid rgba(89, 216, 230, 0.25);
  border-radius: 22px;
  background:
    radial-gradient(circle at 85% 10%, rgba(89, 216, 230, 0.12), transparent 22rem),
    var(--panel-solid);
  box-shadow: var(--shadow);
}

.contact-section h2 {
  max-width: 850px;
  margin-bottom: 20px;
  font-size: clamp(38px, 6vw, 70px);
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.contact-section > p:not(.section-index) {
  max-width: 700px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 17px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-block: 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
}

footer p {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 4px;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  nav {
    display: none;
  }

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

  .system-card {
    max-width: 560px;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .section-heading > p:last-child {
    max-width: 680px;
  }

  .method-section .section-heading {
    grid-template-columns: 1fr;
  }

  .method-flow {
    grid-template-columns: 1fr 1fr;
  }

  .method-flow li:nth-child(odd) {
    border-left: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .site-header {
    min-height: 66px;
    padding-inline: 18px;
  }

  .brand > span:last-child {
    display: none;
  }

  .hero,
  .section,
  .contact-section,
  footer {
    width: min(calc(100% - 32px), var(--max));
  }

  .hero {
    gap: 48px;
    padding-block: 68px;
  }

  h1 {
    font-size: clamp(48px, 16vw, 72px);
  }

  .section {
    padding-block: 76px;
  }

  .capability-grid,
  .project-list,
  .method-flow {
    grid-template-columns: 1fr;
  }

  .project-featured {
    grid-column: auto;
  }

  .capability-card,
  .project-card {
    min-height: auto;
  }

  .method-flow li,
  .method-flow li:nth-child(odd) {
    min-height: auto;
    border-left: 1px solid var(--line);
  }

  .method-flow span {
    margin-bottom: 24px;
  }

  .contact-section {
    margin-block: 50px;
  }

  footer {
    flex-direction: column;
  }
}

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