:root {
  --bg: #07111f;
  --bg-soft: #0b1728;
  --panel: rgba(14, 30, 50, 0.74);
  --panel-strong: #0e1c2e;
  --text: #edf4ff;
  --muted: #91a6bf;
  --line: rgba(161, 193, 225, 0.15);
  --line-strong: rgba(161, 193, 225, 0.28);
  --accent: #54b8ff;
  --accent-strong: #2aa7ff;
  --accent-soft: rgba(84, 184, 255, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 10%, rgba(42, 167, 255, 0.11), transparent 28rem),
    radial-gradient(circle at 8% 62%, rgba(60, 116, 255, 0.08), transparent 30rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

body::selection {
  background: var(--accent);
  color: #04111d;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.page-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.45), transparent 72%);
  opacity: .28;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
  background: rgba(7, 17, 31, 0.72);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 12px;
  letter-spacing: .08em;
}

.brand-name {
  font-size: 15px;
}

.dot,
.accent,
.diamond {
  color: var(--accent);
}

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

.nav a {
  color: var(--muted);
  font: 600 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .06em;
  text-transform: lowercase;
  transition: color .2s ease;
}

.nav a:hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 10px;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 1px;
  margin: 5px auto;
  background: var(--text);
}

.hero {
  min-height: calc(100vh - 82px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 88px 0 78px;
}

.hero-kicker,
.section-index,
.card-label,
.capability-top,
.project-type,
.contact-label {
  font: 700 11px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  margin-bottom: 30px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(84, 184, 255, .72);
}

.hero h1 {
  max-width: 980px;
  margin: 0;
  font-size: clamp(52px, 7.5vw, 104px);
  line-height: .95;
  letter-spacing: -0.065em;
  font-weight: 680;
}

.hero h1 span {
  display: block;
}

.hero-copy {
  max-width: 690px;
  margin: 34px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 38px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: 10px;
  padding: 0 18px;
  border: 1px solid var(--line);
  font-size: 13px;
  font-weight: 700;
  transition:
    transform .2s ease,
    border-color .2s ease,
    background .2s ease;
}

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

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #03111d;
}

.button-primary:hover {
  background: #78c8ff;
}

.button-ghost:hover {
  border-color: var(--line-strong);
  background: rgba(255,255,255,.025);
}

.hero-meta {
  margin-top: 76px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-meta span,
.skills-panel span,
.tags span {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.018);
  color: var(--muted);
  border-radius: 999px;
  padding: 8px 11px;
  font: 600 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.section {
  padding: 120px 0;
  border-top: 1px solid var(--line);
}

.section-index {
  color: var(--accent);
  margin-bottom: 40px;
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, .6fr);
  gap: 64px;
  align-items: start;
}

.section-heading.compact {
  margin-bottom: 56px;
}

.section-heading h2,
.contact-grid h2 {
  margin: 0;
  max-width: 760px;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 650;
}

.section-heading p,
.contact-grid p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.about-grid {
  margin-top: 70px;
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 24px;
}

.info-card,
.skills-panel,
.capability-card,
.contact-card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.026), rgba(255,255,255,.012));
  border-radius: 16px;
}

.info-card {
  padding: 30px;
}

.card-label,
.contact-label {
  color: var(--accent);
  margin-bottom: 36px;
}

.info-card h3 {
  margin: 0 0 12px;
  font-size: 25px;
  letter-spacing: -0.025em;
}

.info-card p {
  margin: 0;
  color: var(--muted);
}

.skills-panel {
  min-height: 220px;
  padding: 28px;
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  gap: 12px;
}

.skills-panel span {
  padding: 12px 14px;
  color: #c7d8ea;
}

.capability-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.capability-card {
  padding: 34px;
  min-height: 390px;
  display: flex;
  flex-direction: column;
}

.capability-top {
  display: flex;
  gap: 10px;
  color: var(--muted);
  margin-bottom: 54px;
}

.capability-card h3 {
  margin: 0 0 14px;
  font-size: 30px;
  letter-spacing: -0.03em;
}

.capability-card > p {
  color: var(--muted);
  margin: 0 0 28px;
}

.capability-card ul {
  margin: auto 0 0;
  padding: 0;
  list-style: none;
}

.capability-card li {
  padding: 11px 0;
  color: #c3d2e2;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.projects {
  border-top: 1px solid var(--line-strong);
}

.project {
  min-height: 198px;
  display: grid;
  grid-template-columns: 70px 1fr 48px;
  gap: 24px;
  align-items: start;
  padding: 32px 10px;
  border-bottom: 1px solid var(--line);
  transition: background .22s ease, padding .22s ease;
}

.project:hover {
  background: rgba(84,184,255,.035);
  padding-left: 18px;
  padding-right: 18px;
}

.project-number {
  color: #58718d;
  font: 700 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding-top: 8px;
}

.project-type {
  color: var(--accent);
  margin-bottom: 10px;
}

.project h3 {
  margin: 0;
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -0.03em;
}

.project p {
  max-width: 720px;
  margin: 12px 0 20px;
  color: var(--muted);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tags span {
  padding: 7px 9px;
}

.project-arrow {
  font-size: 22px;
  color: var(--muted);
  padding-top: 2px;
  transition: color .2s ease, transform .2s ease;
}

.project:hover .project-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

.contact-section {
  padding-bottom: 90px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr .85fr;
  gap: 70px;
  align-items: start;
}

.contact-grid p {
  max-width: 570px;
  margin-top: 22px;
}

.contact-card {
  padding: 28px;
}

.contact-card a {
  display: block;
  margin-bottom: 22px;
  color: var(--text);
  font-size: clamp(18px, 2.5vw, 25px);
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
}

.contact-card button {
  width: 100%;
  min-height: 44px;
  border-radius: 9px;
  border: 1px solid var(--line);
  background: var(--accent-soft);
  color: var(--accent);
  cursor: pointer;
  font: 700 12px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.contact-card button:hover {
  border-color: var(--accent);
}

#copyStatus {
  min-height: 18px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 11px;
}

.site-footer {
  min-height: 88px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  border-top: 1px solid var(--line);
  color: #647b94;
  font: 600 10px/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  animation: reveal .65s ease forwards;
}

.reveal:nth-child(2) { animation-delay: .08s; }
.reveal:nth-child(3) { animation-delay: .16s; }
.reveal:nth-child(4) { animation-delay: .24s; }
.reveal:nth-child(5) { animation-delay: .32s; }

@keyframes reveal {
  to {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 820px) {
  .section-shell,
  .site-header {
    width: min(calc(100% - 32px), var(--max));
  }

  .menu-toggle {
    display: block;
    cursor: pointer;
  }

  .nav {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
    padding: 16px;
    flex-direction: column;
    gap: 0;
    background: rgba(7, 17, 31, .97);
    border: 1px solid var(--line);
    border-radius: 12px;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 15px 10px;
    border-bottom: 1px solid var(--line);
  }

  .nav a:last-child {
    border-bottom: 0;
  }

  .hero {
    min-height: auto;
    padding-top: 104px;
  }

  .hero h1 {
    font-size: clamp(50px, 15vw, 76px);
  }

  .section {
    padding: 90px 0;
  }

  .section-heading,
  .about-grid,
  .capability-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .capability-card {
    min-height: 340px;
  }

  .project {
    grid-template-columns: 42px 1fr 24px;
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .brand-name {
    display: none;
  }

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

  .button {
    width: 100%;
  }

  .hero-meta {
    margin-top: 56px;
  }

  .project {
    grid-template-columns: 1fr 22px;
  }

  .project-number {
    display: none;
  }

  .site-footer {
    padding: 24px 0;
    align-items: flex-start;
    flex-direction: column;
  }
}