/* ============================================================
   AegeanWorks — design system
   Zero dependencies. System fonts. Dark by design.
   ============================================================ */

:root {
  --bg: #04060c;
  --bg-soft: #070b14;
  --bg-alt: #060a13;
  --panel: #0a111d;
  --panel-2: #0d1524;
  --line: rgba(148, 163, 184, 0.13);
  --line-2: rgba(148, 163, 184, 0.22);
  --text: #e9eefb;
  --muted: #9aa8c0;
  --dim: #7f8ea8;
  --cyan: #67e8f9;
  --teal: #22d3ee;
  --violet: #a78bfa;
  --pink: #f472b6;
  --radius: 18px;
  --radius-sm: 12px;
  --maxw: 1180px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI Variable Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

section[id] {
  scroll-margin-top: 88px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(900px 520px at 12% -8%, rgba(34, 211, 238, 0.11), transparent 68%),
    radial-gradient(820px 520px at 92% 6%, rgba(167, 139, 250, 0.10), transparent 70%),
    radial-gradient(700px 500px at 50% 110%, rgba(34, 211, 238, 0.055), transparent 70%);
}

.page-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(148, 163, 184, 0.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 184, 0.045) 1px, transparent 1px);
  background-size: 84px 84px;
  mask-image: radial-gradient(ellipse 90% 62% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 62% at 50% 0%, #000 30%, transparent 78%);
}

main { position: relative; z-index: 1; }

img, svg { display: block; max-width: 100%; }

::selection { background: rgba(103, 232, 249, 0.26); color: #fff; }

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip {
  position: absolute;
  left: 16px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--cyan);
  color: #04121a;
  font-weight: 700;
  border-radius: 8px;
  transition: top 0.2s var(--ease);
}
.skip:focus { top: 12px; }

#main:focus { outline: none; }

.wrap {
  width: min(100% - 2.5rem, var(--maxw));
  margin-inline: auto;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(4, 6, 12, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.site-header.is-stuck {
  border-bottom-color: var(--line);
  background: rgba(4, 6, 12, 0.88);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.brand-mark { width: 30px; height: 30px; }
.brand-word {
  font-size: 1.06rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}
.brand-word span {
  background: linear-gradient(100deg, var(--cyan), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  font-size: 0.885rem;
  font-weight: 500;
  color: var(--muted);
}
.site-nav a {
  position: relative;
  padding: 6px 0;
  transition: color 0.18s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transition: right 0.28s var(--ease);
}
.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after { right: 0; }

.header-cta { margin-left: 0; }

.site-nav .nav-github { display: none; }

.nw { white-space: nowrap; }

.noscript-nav {
  display: none;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 22px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 8, 15, 0.96);
  font-size: 0.86rem;
  color: var(--muted);
}
.noscript-nav a:hover { color: var(--cyan); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  margin-left: auto;
  padding: 0;
  background: transparent;
  border: 1px solid var(--line-2);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 4px auto;
  background: var(--text);
  transition: transform 0.22s var(--ease), opacity 0.18s var(--ease);
}
.site-header[data-open="true"] .nav-toggle span:first-child { transform: translateY(2.75px) rotate(45deg); }
.site-header[data-open="true"] .nav-toggle span:last-child { transform: translateY(-2.75px) rotate(-45deg); }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.885rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease),
              border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn svg { transition: transform 0.2s var(--ease); }

.btn-primary {
  background: linear-gradient(100deg, #8ef0fb 0%, #67e8f9 45%, #b9a4fd 100%);
  color: #04121a;
  box-shadow: 0 8px 26px -12px rgba(103, 232, 249, 0.7);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 34px -12px rgba(103, 232, 249, 0.75);
}
.btn-primary:hover svg { transform: translateX(2px); }

.btn-ghost {
  border-color: var(--line-2);
  color: var(--text);
  background: rgba(255, 255, 255, 0.015);
}
.btn-ghost:hover {
  border-color: rgba(103, 232, 249, 0.42);
  background: rgba(103, 232, 249, 0.06);
  transform: translateY(-1px);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(56px, 8vw, 104px) 0 clamp(36px, 5vw, 64px);
  overflow: hidden;
}

.hero-aurora {
  position: absolute;
  top: -30%;
  left: 50%;
  width: 1200px;
  height: 800px;
  transform: translateX(-50%);
  pointer-events: none;
  background:
    radial-gradient(closest-side, rgba(34, 211, 238, 0.14), transparent 70%) 30% 30% / 55% 55% no-repeat,
    radial-gradient(closest-side, rgba(167, 139, 250, 0.13), transparent 70%) 68% 40% / 50% 50% no-repeat;
  filter: blur(10px);
  opacity: 0.9;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  align-items: center;
  gap: clamp(24px, 4vw, 56px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 20px;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: #8fa6c4;
}
.eyebrow .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px 2px rgba(103, 232, 249, 0.55);
}

h1 {
  margin: 0;
  font-size: clamp(2.3rem, 4.5vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.036em;
  font-weight: 700;
  text-wrap: balance;
}
.br-wide { display: none; }

@media (min-width: 1120px) {
  .br-wide { display: inline; }
}
h1 .grad {
  background: linear-gradient(96deg, #e9eefb 0%, #9ff4ff 38%, #a78bfa 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lede {
  max-width: 34rem;
  margin: 24px 0 0;
  font-size: clamp(1rem, 1.35vw, 1.11rem);
  line-height: 1.65;
  color: var(--muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 30rem;
  margin: 46px 0 0;
  padding-top: 26px;
  border-top: 1px solid var(--line);
}
.hero-stats div { display: flex; flex-direction: column-reverse; gap: 4px; }
.hero-stats dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--dim);
}
.hero-stats dd {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(120deg, #e9eefb, #9ff4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  min-height: 320px;
}
.orbit {
  width: min(100%, 520px);
  height: auto;
  overflow: visible;
}
.spin-ring {
  transform-box: view-box;
  transform-origin: 50% 50%;
  animation: spin 70s linear infinite;
}
.orbit-nodes {
  transform-box: view-box;
  transform-origin: 50% 50%;
  animation: spin 72s linear infinite;
}
.orbit-nodes .node {
  transform-box: fill-box;
  transform-origin: 50% 50%;
  animation: spin-reverse 72s linear infinite;
}
.node rect { filter: drop-shadow(0 6px 18px rgba(2, 8, 20, 0.7)); }
.core { filter: drop-shadow(0 12px 34px rgba(34, 211, 238, 0.18)); }

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: rgba(8, 14, 24, 0.86);
  backdrop-filter: blur(8px);
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}
.hero-chip b { color: var(--text); font-weight: 600; }
.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.55);
  animation: pulse 2.6s var(--ease) infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes spin-reverse { to { transform: rotate(-360deg); } }
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.5); }
  70% { box-shadow: 0 0 0 9px rgba(74, 222, 128, 0); }
  100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0); }
}

/* ---------- Strip ---------- */

.strip {
  position: relative;
  z-index: 1;
  border-block: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 17, 29, 0.55), rgba(4, 6, 12, 0.2));
}
.strip-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.strip-item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 22px 26px;
  border-left: 1px solid var(--line);
}
.strip-item:first-child { border-left: 0; padding-left: 0; }
.strip-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--dim);
}
.strip-value { font-size: 0.86rem; color: #c4d0e2; }

/* ---------- Sections ---------- */

.section {
  position: relative;
  padding: clamp(64px, 9vw, 116px) 0;
}
.section-alt {
  background: linear-gradient(180deg, rgba(8, 13, 23, 0.5), rgba(4, 6, 12, 0) 70%);
  border-block: 1px solid var(--line);
}

.section-head {
  max-width: 46rem;
  margin-bottom: clamp(34px, 5vw, 56px);
}
.section-head h2 {
  margin: 0;
  font-size: clamp(1.75rem, 3.3vw, 2.65rem);
  line-height: 1.12;
  letter-spacing: -0.028em;
  font-weight: 700;
  text-wrap: balance;
}
.section-lede {
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--muted);
  text-wrap: pretty;
}
.section-head-row {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
}
.section-head-row > div { max-width: 42rem; }

/* ---------- Capabilities ---------- */

.cap-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.cap {
  padding: 26px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.032), rgba(255, 255, 255, 0.008));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.cap:hover {
  transform: translateY(-4px);
  border-color: rgba(103, 232, 249, 0.3);
  background: linear-gradient(180deg, rgba(103, 232, 249, 0.06), rgba(255, 255, 255, 0.01));
}
.cap-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 18px;
  border-radius: 11px;
  border: 1px solid rgba(103, 232, 249, 0.22);
  background: rgba(103, 232, 249, 0.07);
  color: var(--cyan);
}
.cap-icon svg { width: 20px; height: 20px; }
.cap h3 {
  margin: 0 0 9px;
  font-size: 1rem;
  font-weight: 650;
  letter-spacing: -0.012em;
}
.cap p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.62;
  color: var(--muted);
}

/* ---------- Principles ---------- */

.principles {
  margin-top: clamp(44px, 6vw, 72px);
  padding-top: 34px;
  border-top: 1px solid var(--line);
}
.principles-title {
  margin: 0 0 22px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 500;
}
.principle-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 46px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: none;
}
.principle-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  align-items: start;
}
.principle-list li > span {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--cyan);
  padding-top: 3px;
}
.principle-list b {
  font-size: 0.95rem;
  font-weight: 640;
  letter-spacing: -0.01em;
}
.principle-list p {
  margin: 5px 0 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- Work ---------- */

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.work-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 30px 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(167, 139, 250, 0.08), transparent 55%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.006));
  transition: transform 0.32s var(--ease), border-color 0.32s var(--ease);
}
.work-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(340px circle at var(--mx, 50%) var(--my, 0%), rgba(103, 232, 249, 0.09), transparent 65%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
}
.work-card:hover {
  transform: translateY(-4px);
  border-color: rgba(103, 232, 249, 0.3);
}
.work-card:hover::after { opacity: 1; }
.work-card-wide {
  grid-column: span 2;
  padding: 38px 34px 32px;
  background:
    radial-gradient(90% 140% at 0% 0%, rgba(34, 211, 238, 0.12), transparent 55%),
    radial-gradient(80% 130% at 100% 100%, rgba(167, 139, 250, 0.10), transparent 55%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.032), rgba(255, 255, 255, 0.006));
}
.work-art {
  position: absolute;
  top: 50%;
  right: 34px;
  width: 240px;
  transform: translateY(-50%);
  opacity: 0.85;
  transition: opacity 0.4s var(--ease), transform 0.5s var(--ease);
}
.work-card-wide:hover .work-art { opacity: 1; transform: translateY(-50%) scale(1.03); }

@media (max-width: 900px) {
  .work-art { display: none; }
}

@media (min-width: 901px) {
  .work-card-wide { padding-right: 300px; }
  .work-card-wide p { max-width: 40ch; }
}
.work-index {
  position: absolute;
  top: 18px;
  right: 24px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: rgba(148, 163, 184, 0.4);
}
.work-tag {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
}
.work-card h3 {
  margin: 0 0 12px;
  font-size: clamp(1.35rem, 2.1vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}
.work-card-wide h3 { font-size: clamp(1.6rem, 2.6vw, 2rem); }
.work-card p {
  margin: 0 0 20px;
  max-width: 46ch;
  font-size: 0.92rem;
  line-height: 1.66;
  color: var(--muted);
}
.work-meta {
  margin-top: auto;
  padding-top: 4px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--dim);
}
.work-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  font-size: 0.84rem;
  font-weight: 600;
  color: #b9ecf7;
}
.work-link svg { transition: transform 0.2s var(--ease); }
.work-card:hover .work-link svg { transform: translate(2px, -2px); }

/* ---------- Filters ---------- */

.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line);
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 550;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.chip span {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--dim);
}
.chip:hover {
  color: var(--text);
  border-color: rgba(103, 232, 249, 0.35);
}
.chip.is-active {
  color: #04121a;
  background: linear-gradient(100deg, #8ef0fb, #b9a4fd);
  border-color: transparent;
}
.chip.is-active span { color: rgba(4, 18, 26, 0.6); }

.filter-status {
  margin: -8px 0 20px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--dim);
  min-height: 1em;
}

/* ---------- Project grid ---------- */

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.project {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.006));
  transition: transform 0.26s var(--ease), border-color 0.26s var(--ease), background 0.26s var(--ease);
}
.project::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), transparent);
  opacity: 0;
  transition: opacity 0.26s var(--ease);
}
.project:hover {
  transform: translateY(-3px);
  border-color: rgba(103, 232, 249, 0.28);
  background: linear-gradient(180deg, rgba(103, 232, 249, 0.055), rgba(255, 255, 255, 0.008));
}
.project:hover::before { opacity: 1; }

.project-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border-radius: 9px;
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid var(--line-2);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
}
.mark-ai { color: #a5f3fc; border-color: rgba(34, 211, 238, 0.3); background: rgba(34, 211, 238, 0.09); }
.mark-research { color: #c4b5fd; border-color: rgba(167, 139, 250, 0.3); background: rgba(167, 139, 250, 0.09); }
.mark-health { color: #f9a8d4; border-color: rgba(244, 114, 182, 0.26); background: rgba(244, 114, 182, 0.08); }
.mark-tools { color: #7dd3fc; border-color: rgba(125, 211, 252, 0.28); background: rgba(125, 211, 252, 0.08); }
.mark-play { color: #fcd34d; border-color: rgba(252, 211, 77, 0.26); background: rgba(252, 211, 77, 0.07); }

.project h3 {
  margin: 0 0 6px;
  font-size: 0.96rem;
  font-weight: 650;
  letter-spacing: -0.014em;
}
.project p {
  margin: 0 0 16px;
  font-size: 0.83rem;
  line-height: 1.58;
  color: var(--muted);
}
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.project-tags .tag {
  font-style: normal;
  padding: 3px 8px;
  border-radius: 5px;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  color: var(--dim);
}
.project.is-hidden { display: none; }

/* ---------- Research ---------- */

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.research {
  position: relative;
  padding: 26px 26px 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.026), rgba(255, 255, 255, 0.005));
  transition: border-color 0.26s var(--ease), transform 0.26s var(--ease);
}
.research:hover { border-color: rgba(167, 139, 250, 0.32); transform: translateY(-3px); }
.research-no {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--violet);
}
.research h3 {
  margin: 10px 0 8px;
  font-size: 1.02rem;
  font-weight: 650;
  letter-spacing: -0.015em;
}
.research p {
  margin: 0 0 16px;
  font-size: 0.865rem;
  line-height: 1.62;
  color: var(--muted);
}
.research a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: #c9bcfb;
  border-bottom: 1px solid rgba(167, 139, 250, 0.3);
  padding-bottom: 2px;
}
.research a:hover { color: #e3dbff; }
.research:last-child:nth-child(odd) { grid-column: span 2; }

/* ---------- Licensing ---------- */

.license-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.license-card {
  display: flex;
  flex-direction: column;
  padding: 32px 30px 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.028), rgba(255, 255, 255, 0.006));
}
.license-card-accent {
  border-color: rgba(103, 232, 249, 0.3);
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(103, 232, 249, 0.12), transparent 60%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.006));
}
.license-tier {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
}
.license-card h3 {
  margin: 10px 0 4px;
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: -0.022em;
}
.license-price {
  margin: 0 0 22px;
  font-size: 0.88rem;
  color: var(--cyan);
}
.license-card ul {
  display: grid;
  gap: 10px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}
.license-card li {
  position: relative;
  padding-left: 22px;
  font-size: 0.875rem;
  color: var(--muted);
}
.license-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 10px;
  height: 5px;
  border-left: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(-45deg);
}
.license-card li a {
  color: #c9d6e8;
  border-bottom: 1px solid rgba(148, 163, 184, 0.35);
}
.license-card li a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.license-card .btn { margin-top: auto; align-self: flex-start; }
.license-note {
  max-width: 60rem;
  margin: 22px 0 0;
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--dim);
}
.license-note a {
  color: var(--muted);
  border-bottom: 1px solid var(--line-2);
}

/* ---------- Footer ---------- */

.site-footer {
  position: relative;
  z-index: 1;
  padding: clamp(56px, 7vw, 80px) 0 28px;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(7, 11, 20, 0.6), rgba(3, 5, 10, 0.95));
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 0.6fr));
  gap: 40px;
}
.footer-brand p {
  max-width: 30ch;
  margin: 16px 0 0;
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--muted);
}
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col h2 {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--dim);
}
.footer-col a {
  width: fit-content;
  font-size: 0.86rem;
  color: var(--muted);
  transition: color 0.18s var(--ease);
}
.footer-col a:hover { color: var(--cyan); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--dim);
}
.footer-bottom p { margin: 0; }

/* ---------- Reveal ---------- */

.reveal {
  opacity: 1;
  transform: none;
}
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */

@media (max-width: 1080px) {
  .cap-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .project-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 0.7fr)); gap: 28px; }
}

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero-visual { min-height: 0; }
  .orbit { width: min(100%, 440px); }
  .hero-stats { margin-top: 34px; }
  .strip-inner { grid-template-columns: minmax(0, 1fr); }
  .strip-item { border-left: 0; padding: 16px 0; border-top: 1px solid var(--line); }
  .strip-item:first-child { border-top: 0; }
  .work-grid { grid-template-columns: minmax(0, 1fr); }
  .work-card-wide { grid-column: span 1; padding: 30px 26px 26px; }
  .research-grid { grid-template-columns: minmax(0, 1fr); }
  .research:last-child:nth-child(odd) { grid-column: span 1; }
  .license-grid { grid-template-columns: minmax(0, 1fr); }
  .section-head-row { flex-direction: column; align-items: flex-start; }
  .principle-list { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px; }
  .footer-brand { grid-column: span 2; }
}

@media (max-width: 780px) {
  .site-nav {
    position: fixed;
    inset: 72px 0 auto;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    margin: 0;
    padding: 10px 20px 20px;
    max-height: calc(100vh - 72px);
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
    background: #05080f;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
    transform: none;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.22s var(--ease), transform 0.22s var(--ease), visibility 0.22s;
  }
  .js .site-nav {
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
  }
  .site-nav a {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
    font-size: 0.95rem;
  }
  .site-nav a:last-child { border-bottom: 0; }
  .js .site-header[data-open="true"] .site-nav {
    transform: none;
    opacity: 1;
    visibility: visible;
  }
  body.nav-open { overflow: hidden; }
  body.nav-open::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 40;
    background: rgba(2, 4, 8, 0.68);
    pointer-events: auto;
  }
  .js .nav-toggle { display: block; }
  .header-cta { display: none; }
  .site-nav .nav-github { display: block; }
  .noscript-nav { display: flex; }
  .script-failed .header-inner {
    flex-wrap: wrap;
    height: auto;
    min-height: 72px;
    padding-block: 10px;
  }
  .script-failed .site-nav {
    position: static;
    flex-basis: 100%;
    order: 3;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin: 0;
    padding: 8px 0 2px;
    max-height: none;
    overflow: visible;
    background: transparent;
    border: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .script-failed .site-nav a {
    width: auto;
    padding: 4px 0;
    border: 0;
    font-size: 0.84rem;
  }
  .script-failed .nav-toggle { display: none; }
  .script-failed .site-nav .nav-github { display: block; }
  .header-inner { gap: 14px; }
}

@media (max-width: 640px) {
  .wrap { width: min(100% - 1.75rem, var(--maxw)); }
  h1 { font-size: clamp(2.15rem, 9.2vw, 2.9rem); }
  .hero { padding-top: 34px; }
  .hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
  .hero-stats dd { font-size: 1.4rem; }
  .hero-stats dt { font-size: 0.6rem; letter-spacing: 0.06em; }
  .hero-chip { margin-top: 4px; }
  .orbit .node text { font-size: 14px; }
  .project-grid { grid-template-columns: minmax(0, 1fr); }
  .cap-grid { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 56px 0; }
  .section-head { margin-bottom: 30px; }
  .work-card { padding: 26px 22px 22px; }
  .license-card { padding: 26px 22px 24px; }
  .filters { gap: 6px; }
  .chip { padding: 8px 12px; font-size: 0.76rem; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .footer-brand { grid-column: span 1; }
  .footer-bottom { margin-top: 34px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal,
  .js .reveal { opacity: 1; transform: none; }
}