:root {
  color-scheme: dark;
  --bg: #06101d;
  --bg-deep: #030811;
  --surface: #0b1928;
  --surface-raised: #102235;
  --line: #213a50;
  --line-soft: rgba(145, 192, 222, .15);
  --text: #f7f8fb;
  --muted: #a8b7c5;
  --dim: #73889a;
  --cyan: #65e5ff;
  --cyan-soft: #b9f3ff;
  --pink: #ff63c8;
  --pink-soft: #ffb5e3;
  --green: #6ce7b7;
  --max: 1180px;
  --radius: 24px;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  overflow-x: clip;
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }

html { background: var(--bg-deep); }

body {
  background:
    radial-gradient(circle at 72% 8%, rgba(60, 153, 210, .13), transparent 27rem),
    radial-gradient(circle at 8% 30%, rgba(255, 76, 191, .08), transparent 24rem),
    var(--bg);
  color: var(--text);
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
}

.signal-field {
  height: 100%;
  inset: 0;
  opacity: .72;
  pointer-events: none;
  position: fixed;
  width: 100%;
  z-index: 0;
}

body::before {
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  content: "";
  inset: 0 0 auto;
  height: 960px;
  mask-image: linear-gradient(to bottom, #000 10%, transparent 92%);
  opacity: .42;
  pointer-events: none;
  position: absolute;
}

img { display: block; height: auto; max-width: 100%; }
a { color: inherit; }

.skip-link {
  background: var(--cyan);
  color: #001118;
  font-weight: 800;
  left: 16px;
  opacity: 0;
  padding: 12px 16px;
  pointer-events: none;
  position: fixed;
  top: 12px;
  transform: translateY(-160%);
  transition: transform .18s ease;
  z-index: 100;
}

.skip-link:focus { opacity: 1; pointer-events: auto; transform: translateY(0); }

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 5px;
}

.site-shell { position: relative; z-index: 1; }

.site-header,
.hero,
.welcome-signal,
.section-pad,
.site-footer {
  margin-inline: auto;
  max-width: var(--max);
  width: calc(100% - 48px);
}

.site-header {
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding-block: 28px;
  position: relative;
  z-index: 20;
}

.wordmark {
  align-items: center;
  display: inline-flex;
  font-size: .8rem;
  font-weight: 800;
  gap: 12px;
  letter-spacing: .14em;
  text-decoration: none;
  text-transform: uppercase;
}

.wordmark img { border-radius: 50%; height: 40px; width: 40px; }

.site-nav { align-items: center; display: flex; gap: clamp(18px, 3vw, 36px); }
.site-nav a { color: var(--muted); font-size: .84rem; font-weight: 650; text-decoration: none; }
.site-nav a:hover { color: var(--text); }
.site-nav .nav-github { border: 1px solid var(--line); border-radius: 999px; color: var(--text); padding: 10px 15px; }
.site-nav .nav-github:hover { background: var(--surface-raised); border-color: #385a75; }

.hero {
  align-items: center;
  display: grid;
  gap: clamp(30px, 5vw, 78px);
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .92fr);
  min-height: 710px;
  padding-block: 64px 80px;
  position: relative;
}

.signal-label,
.section-kicker,
.project-type {
  color: var(--cyan);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .17em;
  margin: 0;
  text-transform: uppercase;
}

.signal-label { align-items: center; display: flex; gap: 10px; }
.signal-label > span { background: var(--green); border-radius: 50%; box-shadow: 0 0 13px rgba(108, 231, 183, .8); height: 7px; width: 7px; }

.hero h1 {
  font-size: clamp(3.7rem, 7.3vw, 7.35rem);
  font-weight: 700;
  letter-spacing: -.073em;
  line-height: .89;
  margin: 24px 0 30px;
  max-width: 8.8ch;
}

.hero h1 em,
.mission h2 em { color: var(--pink); font-style: normal; }

.hero-lead {
  color: var(--text);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  line-height: 1.48;
  margin: 0;
  max-width: 630px;
}

.hero-detail { color: var(--muted); font-size: 1rem; line-height: 1.65; margin: 12px 0 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }

.button {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  display: inline-flex;
  font-size: .85rem;
  font-weight: 800;
  gap: 12px;
  justify-content: center;
  min-height: 48px;
  padding: 13px 20px;
  text-decoration: none;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--text); border-color: var(--text); color: #06101d; }
.button-primary:hover { background: var(--cyan-soft); border-color: var(--cyan-soft); }
.button-secondary { background: rgba(7, 18, 31, .65); color: var(--text); }
.button-secondary:hover { background: var(--surface-raised); border-color: #4b6e87; }

.hero-observatory { aspect-ratio: 1; margin: auto; max-width: 560px; position: relative; width: 100%; }
.hero-observatory::before { background: radial-gradient(circle, rgba(87, 225, 255, .13), transparent 64%); content: ""; inset: -18%; position: absolute; }
.hero-observatory img { animation: drift 8s ease-in-out infinite; border-radius: 50%; filter: drop-shadow(0 30px 68px rgba(0, 0, 0, .56)); height: 74%; left: 13%; position: absolute; top: 13%; width: 74%; }
.orbit { border: 1px solid rgba(101, 229, 255, .22); border-radius: 50%; position: absolute; }
.orbit::before,
.orbit::after { background: var(--cyan); border-radius: 50%; box-shadow: 0 0 12px rgba(101, 229, 255, .8); content: ""; height: 7px; position: absolute; width: 7px; }
.orbit-outer { inset: 0; transform: rotate(-14deg); }
.orbit-outer::before { left: 8%; top: 26%; }
.orbit-outer::after { bottom: 9%; right: 27%; }
.orbit-inner { border-color: rgba(255, 99, 200, .2); inset: 8%; transform: rotate(24deg); }
.orbit-inner::before { background: var(--pink); left: 48%; top: -4px; }
.orbit-inner::after { background: var(--pink); bottom: 18%; left: 4%; }
.coordinates { background: rgba(5, 14, 25, .8); border-left: 1px solid var(--line); display: grid; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; gap: 2px; padding: 6px 8px; position: absolute; z-index: 2; }
.coordinates span { color: var(--dim); font-size: .55rem; letter-spacing: .14em; }
.coordinates b { color: var(--cyan-soft); font-size: .64rem; letter-spacing: .08em; }
.coordinates-top { left: 12%; top: 7%; }
.coordinates-right { right: 1%; top: 46%; }
.coordinates-bottom { bottom: 6%; left: 25%; }

.welcome-signal {
  align-items: center;
  background: rgba(11, 25, 40, .8);
  border: 1px solid var(--line);
  border-left: 3px solid var(--pink);
  display: flex;
  gap: 20px;
  justify-content: space-between;
  padding: 18px 20px;
}
.welcome-signal p { align-items: center; display: flex; gap: 18px; margin: 0; }
.welcome-index { color: var(--dim); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .68rem; letter-spacing: .08em; }
.welcome-signal strong { font-size: .95rem; }
.welcome-status { color: var(--green); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }

.section-pad { padding-block: clamp(90px, 12vw, 160px); }
.mission-grid { align-items: start; display: grid; gap: clamp(40px, 8vw, 110px); grid-template-columns: minmax(0, 1.35fr) minmax(280px, .65fr); margin-top: 28px; }
.mission h2,
.section-heading h2,
.invitation h2 {
  font-size: clamp(2.7rem, 5vw, 5rem);
  letter-spacing: -.06em;
  line-height: .98;
  margin: 0;
}
.mission h2 { max-width: 13ch; }
.mission-copy { border-top: 1px solid var(--line); padding-top: 22px; }
.mission-copy p { color: var(--muted); font-size: 1.04rem; line-height: 1.75; margin: 0 0 16px; }
.mission-copy p:last-child { color: var(--cyan-soft); }

.work { border-top: 1px solid var(--line-soft); }
.section-heading { align-items: end; display: flex; gap: 32px; justify-content: space-between; margin-bottom: 50px; }
.section-heading h2 { margin-top: 18px; }
.text-link,
.project-link { font-size: .83rem; font-weight: 800; text-decoration: none; }
.text-link { border-bottom: 1px solid var(--dim); padding-bottom: 6px; white-space: nowrap; }
.text-link:hover,
.project-link:hover { color: var(--cyan); }

.project-grid { display: grid; gap: 20px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.project-card { background: rgba(11, 25, 40, .84); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; position: relative; }
.project-card::before { background: linear-gradient(90deg, var(--cyan), var(--pink)); content: ""; height: 2px; left: 0; opacity: .72; position: absolute; right: 0; top: 0; z-index: 2; }
.project-featured { display: grid; grid-column: 1 / -1; grid-template-columns: minmax(0, 1.15fr) minmax(360px, .85fr); min-height: 610px; }
.project-visual { background: #07101b; min-height: 500px; overflow: hidden; position: relative; }
.project-visual::after { background: linear-gradient(to right, transparent 72%, rgba(11, 25, 40, .94)); content: ""; inset: 0; pointer-events: none; position: absolute; }
.project-visual-pdrive img { border: 1px solid rgba(101, 229, 255, .42); border-radius: 13px 13px 0 0; box-shadow: 0 36px 70px rgba(0, 0, 0, .45); left: 8%; max-width: none; position: absolute; top: 64px; width: 88%; }
.project-status { align-items: center; background: rgba(5, 14, 25, .88); border: 1px solid var(--line); border-radius: 999px; display: flex; font-size: .68rem; font-weight: 800; gap: 8px; left: 22px; letter-spacing: .08em; padding: 8px 11px; position: absolute; text-transform: uppercase; top: 20px; z-index: 3; }
.project-status i { background: var(--green); border-radius: 50%; box-shadow: 0 0 9px rgba(108, 231, 183, .7); height: 6px; width: 6px; }
.project-content { align-self: center; padding: clamp(30px, 5vw, 62px); }
.project-content h3 { font-size: clamp(2rem, 3.2vw, 3.25rem); letter-spacing: -.045em; line-height: 1; margin: 16px 0 20px; }
.project-content > p:not(.project-type) { color: var(--muted); font-size: .98rem; line-height: 1.7; margin: 0; }
.project-signals { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; margin: 26px 0 30px; padding: 0; }
.project-signals li { border: 1px solid var(--line); border-radius: 999px; color: var(--cyan-soft); font-size: .66rem; font-weight: 700; letter-spacing: .05em; padding: 7px 10px; text-transform: uppercase; }
.project-link { align-items: center; display: inline-flex; gap: 9px; margin-top: 28px; }
.project-compact { display: grid; min-height: 520px; }
.project-compact .project-content { align-self: start; padding: 38px 40px; }
.project-compact .project-content h3 { font-size: clamp(1.9rem, 3vw, 2.75rem); }
.compact-visual { overflow: hidden; position: relative; }
.project-chatgpt { grid-template-columns: 1fr .72fr; }
.chatgpt-visual { align-self: end; height: 100%; }
.chatgpt-visual::before { background: radial-gradient(circle, rgba(255, 99, 200, .18), transparent 64%); content: ""; inset: 0; position: absolute; }
.chatgpt-visual img { border: 1px solid rgba(101, 229, 255, .35); border-radius: 11px 0 0 0; bottom: -80px; box-shadow: 0 24px 54px rgba(0, 0, 0, .45); max-width: none; position: absolute; right: -8px; width: 100%; }
.project-nemo { grid-template-rows: 235px 1fr; }
.nemo-visual { background: radial-gradient(circle at 50% 120%, rgba(101, 229, 255, .17), transparent 70%); border-bottom: 1px solid var(--line); padding: 44px 30px 0; }
.nemo-visual img { border: 1px solid rgba(101, 229, 255, .38); border-radius: 9px; box-shadow: 0 24px 48px rgba(0, 0, 0, .4); width: 100%; }
.project-nemo .project-content { padding-top: 32px; }

.principles { border-top: 1px solid var(--line-soft); }
.principles-heading { align-items: start; }
.principles-heading > p { color: var(--muted); line-height: 1.65; margin: 4px 0 0; max-width: 380px; }
.principle-grid { border-bottom: 1px solid var(--line); border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); }
.principle-grid article { min-height: 300px; padding: 36px 32px; }
.principle-grid article + article { border-left: 1px solid var(--line); }
.principle-number { color: var(--pink); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .72rem; }
.principle-grid h3 { font-size: 1.45rem; letter-spacing: -.025em; margin: 82px 0 15px; }
.principle-grid p { color: var(--muted); line-height: 1.7; margin: 0; }

.invitation { overflow: hidden; padding-bottom: clamp(120px, 15vw, 190px); position: relative; text-align: center; }
.invitation::before { background: radial-gradient(circle, rgba(255, 99, 200, .12), transparent 60%); content: ""; height: 560px; left: 50%; position: absolute; top: 42%; transform: translate(-50%, -50%); width: 760px; }
.invitation > *:not(.invitation-orbit) { position: relative; z-index: 1; }
.invitation .section-kicker { color: var(--pink-soft); }
.invitation h2 { font-size: clamp(3.5rem, 8vw, 7.5rem); margin: 22px auto 28px; }
.invitation > p:not(.section-kicker) { color: var(--muted); font-size: 1.1rem; line-height: 1.7; margin: auto; max-width: 620px; }
.invitation-actions { justify-content: center; }
.invitation-orbit { border: 1px solid rgba(101, 229, 255, .14); border-radius: 50%; height: 680px; left: 50%; position: absolute; top: -10px; transform: translateX(-50%); width: 680px; }

.site-footer { align-items: center; border-top: 1px solid var(--line); display: flex; gap: 30px; justify-content: space-between; padding-block: 32px 44px; }
.footer-brand { align-items: center; display: flex; gap: 13px; }
.footer-brand img { border-radius: 50%; height: 38px; width: 38px; }
.footer-brand div { display: grid; gap: 3px; }
.footer-brand strong { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; }
.footer-brand span,
.footer-meta { color: var(--dim); font-size: .7rem; }
.footer-meta { align-items: center; display: flex; flex-wrap: wrap; gap: 18px; justify-content: flex-end; }
.footer-meta a { color: var(--muted); }

.error-page { min-height: 100vh; }
.error-shell { align-items: flex-start; display: flex; flex-direction: column; justify-content: center; margin: auto; min-height: 100vh; padding: 48px; position: relative; width: min(100%, 960px); }
.error-wordmark { left: 48px; position: absolute; top: 34px; }
.error-shell h1 { font-size: clamp(4.5rem, 13vw, 9rem); letter-spacing: -.08em; line-height: .85; margin: 26px 0; }
.error-shell > p:not(.signal-label) { color: var(--muted); font-size: 1.1rem; line-height: 1.7; margin: 0 0 30px; max-width: 480px; }
.error-signal { border: 1px solid var(--line); border-radius: 50%; height: min(58vw, 560px); position: absolute; right: -8%; top: 18%; width: min(58vw, 560px); }
.error-signal::before { border: 1px solid rgba(255, 99, 200, .28); border-radius: 50%; content: ""; inset: 12%; position: absolute; }
.error-signal span { color: rgba(101, 229, 255, .11); font-size: clamp(6rem, 19vw, 13rem); font-weight: 800; left: 50%; letter-spacing: -.08em; position: absolute; top: 50%; transform: translate(-50%, -50%); }

@keyframes drift {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-10px) rotate(1deg); }
}

@media (max-width: 960px) {
  .hero { grid-template-columns: 1fr 360px; min-height: 650px; }
  .hero h1 { font-size: clamp(3.4rem, 7.8vw, 5.2rem); }
  .project-featured { grid-template-columns: 1fr; }
  .project-visual { min-height: 520px; }
  .project-visual::after { background: linear-gradient(to bottom, transparent 72%, rgba(11, 25, 40, .96)); }
  .project-visual-pdrive img { left: 12%; width: 76%; }
  .project-compact { grid-column: 1 / -1; }
  .project-chatgpt { grid-template-columns: 1.2fr .8fr; }
}

@media (max-width: 760px) {
  .site-header, .hero, .welcome-signal, .section-pad, .site-footer { width: calc(100% - 32px); }
  .site-header { padding-block: 20px; }
  .site-nav a:not(.nav-github) { display: none; }
  .hero { grid-template-columns: 1fr; padding-block: 70px 55px; }
  .hero-copy { position: relative; z-index: 2; }
  .hero-observatory { margin-top: -20px; max-width: 490px; width: 92%; }
  .welcome-signal, .welcome-signal p { align-items: flex-start; flex-direction: column; gap: 8px; }
  .welcome-status { display: none; }
  .mission-grid { grid-template-columns: 1fr; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .project-visual { min-height: 450px; }
  .project-visual-pdrive img { left: 5%; width: 90%; }
  .project-chatgpt { grid-template-columns: 1.2fr .8fr; }
  .principles-heading > p { max-width: none; }
  .principle-grid { grid-template-columns: 1fr; }
  .principle-grid article { min-height: 230px; }
  .principle-grid article + article { border-left: 0; border-top: 1px solid var(--line); }
  .principle-grid h3 { margin-top: 55px; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .footer-meta { justify-content: flex-start; }
  .error-signal { opacity: .55; right: -30%; }
}

@media (max-width: 520px) {
  body::before { background-size: 44px 44px; }
  .wordmark span { font-size: .7rem; letter-spacing: .1em; }
  .site-nav .nav-github { padding: 9px 12px; }
  .hero { padding-top: 58px; }
  .hero h1 { font-size: clamp(3.15rem, 15vw, 4.5rem); }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: 100%; }
  .hero-observatory { width: 108%; }
  .coordinates-right { right: 5%; }
  .section-pad { padding-block: 88px; }
  .mission h2, .section-heading h2 { font-size: 2.75rem; }
  .project-visual { min-height: 390px; }
  .project-visual-pdrive img { top: 60px; width: 96%; }
  .project-content, .project-compact .project-content { padding: 30px 24px; }
  .project-chatgpt { grid-template-columns: 1fr; }
  .chatgpt-visual { height: 360px; }
  .chatgpt-visual img { bottom: -90px; right: 8%; width: 58%; }
  .project-nemo { grid-template-rows: 190px 1fr; }
  .nemo-visual { padding: 45px 18px 0; }
  .invitation h2 { font-size: 3.9rem; }
  .footer-meta > span { flex-basis: 100%; }
  .error-shell { padding: 30px; }
  .error-wordmark { left: 30px; top: 26px; }
}

@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  .signal-field { display: none; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}