:root {
  --bg: #fafaf9;
  --bg-elev: #ffffff;
  --bg-alt: #f1f1ee;
  --fg: #1a1a1a;
  --fg-strong: #000000;
  --fg-muted: #525252;
  --fg-subtle: #737373;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.16);
  --accent: #2b8db5;
  --accent-fg: #ffffff;
  --accent-soft: rgba(43, 141, 181, 0.10);
}

[data-theme="dark"] {
  --bg: #0c1118;
  --bg-elev: #131922;
  --bg-alt: #0f151d;
  --fg: #d8dde4;
  --fg-strong: #f3f5f8;
  --fg-muted: #8c95a3;
  --fg-subtle: #6b7484;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.18);
  --accent: #5fb7d8;
  --accent-fg: #061119;
  --accent-soft: rgba(95, 183, 216, 0.12);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body { min-height: 100dvh; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; padding: 0; margin: 0; }
::selection { background: var(--accent-soft); color: var(--fg-strong); }

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px; top: 16px;
  background: var(--accent);
  color: var(--accent-fg);
  padding: 8px 12px;
  border-radius: 8px;
  z-index: 100;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.nav-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-links {
  display: flex;
  gap: 28px;
  margin: 0 auto 0 24px;
}
.nav-links a {
  font-size: 14px;
  color: var(--fg-muted);
  transition: color .2s;
}
.nav-links a:hover { color: var(--fg-strong); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand img { display: block; height: 28px; width: auto; }
.brand-text { font-size: 15px; }

.theme-toggle {
  appearance: none;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  width: 38px;
  height: 38px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.theme-toggle:hover { border-color: var(--border-strong); color: var(--fg-strong); }
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 999px;
  font-weight: 500;
  font-size: 15px;
  border: 1px solid transparent;
  transition: transform .15s, background .2s, border-color .2s, color .2s;
  cursor: pointer;
}
.btn-primary {
  background: var(--fg-strong);
  color: var(--bg);
}
.btn-primary:hover { transform: translateY(-1px); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border-strong);
}
.btn-ghost:hover { border-color: var(--fg-strong); }
.nav-cta { padding: 8px 16px; font-size: 14px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 20px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: var(--accent);
}

.hero {
  padding: 120px 0 96px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: 64px; }
}
.hero-copy { min-width: 0; }

.hero-art {
  position: relative;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
}
.hero-art svg { width: 100%; height: 100%; display: block; color: var(--accent); }

.orbit { transform-box: fill-box; transform-origin: center; }
.orbit-1 { animation: spin-cw 40s linear infinite; }
.orbit-2 { animation: spin-ccw 60s linear infinite; }
.orbit-3 { animation: spin-cw 28s linear infinite; }
.core { animation: float 6s ease-in-out infinite; transform-origin: center; transform-box: fill-box; }

@keyframes spin-cw {
  from { transform: rotate(0); }
  to   { transform: rotate(360deg); }
}
@keyframes spin-ccw {
  from { transform: rotate(0); }
  to   { transform: rotate(-360deg); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-6px); }
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 500px at 20% -10%, var(--accent-soft), transparent 60%),
    radial-gradient(600px 400px at 90% 0%, var(--accent-soft), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.hero-title {
  font-size: clamp(40px, 7vw, 80px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  font-weight: 800;
  color: var(--fg-strong);
  margin: 0 0 28px;
  max-width: 18ch;
}
.grad {
  background: linear-gradient(120deg, var(--accent), color-mix(in srgb, var(--accent) 40%, var(--fg-strong)));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  font-size: clamp(17px, 1.6vw, 19px);
  color: var(--fg-muted);
  max-width: 60ch;
  margin: 0 0 36px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-meta {
  margin: 24px 0 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--fg-subtle);
  text-transform: uppercase;
}

.pronouns {
  font-weight: 400;
  font-size: 0.9em;
  color: var(--fg-subtle);
}

.section {
  padding: 96px 0;
  border-top: 1px solid var(--border);
}
.section-alt { background: var(--bg-alt); }
.section-contact { background: var(--bg-alt); }

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.025em;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fg-strong);
  margin: 0 0 16px;
  max-width: 22ch;
}
.section-sub {
  font-size: 17px;
  color: var(--fg-muted);
  max-width: 60ch;
  margin: 0 0 40px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 32px;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}
.card-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.08em;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 600;
  color: var(--fg-strong);
  letter-spacing: -0.01em;
}
.card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 15px;
}

.principles {
  display: grid;
  gap: 4px;
  margin-top: 32px;
}
.principles li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.principles li:last-child { border-bottom: 1px solid var(--border); }
.principle-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.08em;
  padding-top: 4px;
}
.principles h3 {
  margin: 0 0 6px;
  font-size: 22px;
  font-weight: 600;
  color: var(--fg-strong);
  letter-spacing: -0.01em;
}
.principles p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 16px;
  max-width: 60ch;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}
.chips li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--fg);
  transition: border-color .2s, color .2s, transform .15s;
}
.chips li:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.section-title-xl {
  font-size: clamp(56px, 10vw, 120px);
  letter-spacing: -0.04em;
  font-weight: 800;
  line-height: 0.95;
  color: var(--accent);
  margin: 0 0 32px;
}

.section-sub-strong {
  font-size: clamp(20px, 2vw, 26px);
  color: var(--fg-strong);
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}

.chips-lg {
  margin-top: 36px;
  gap: 12px;
}
.chips-lg li {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--fg-strong);
  border-radius: 10px;
  letter-spacing: -0.005em;
}
.chips-lg li:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
}
.about-grid p {
  font-size: 17px;
  color: var(--fg-muted);
  margin: 0;
}
.about-grid strong { color: var(--fg-strong); font-weight: 600; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

.form-shell {
  margin-top: 36px;
  max-width: 640px;
  position: relative;
  animation: form-in .25s ease;
}
@keyframes form-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.form-close {
  appearance: none;
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1;
  transition: color .2s, border-color .2s;
}
.form-close:hover { color: var(--fg-strong); border-color: var(--border-strong); }

.contact-form {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  display: grid;
  gap: 14px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 12px 40px rgba(0,0,0,0.06);
}
.btn-send:disabled { opacity: 0.7; cursor: progress; }
.form-error {
  margin: 4px 0 0;
  font-size: 14px;
  color: #d33b3b;
  text-align: center;
}
[data-theme="dark"] .form-error { color: #ff7a7a; }

.form-success {
  margin-top: 24px;
  max-width: max-content;
  padding: 12px 18px;
  background: var(--accent-soft);
  border: 1px solid var(--accent);
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--fg);
  animation: form-in .3s ease;
}
.form-success svg { color: var(--accent); flex: none; }
.form-success strong { color: var(--fg-strong); font-weight: 600; }
.form-success.fade-out { transition: opacity .4s, transform .4s; opacity: 0; transform: translateY(-4px); }
.field { display: block; }
.field input,
.field textarea {
  appearance: none;
  width: 100%;
  font: inherit;
  font-size: 16px;
  color: var(--fg-strong);
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 16px 18px;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.field textarea { resize: vertical; min-height: 140px; line-height: 1.5; font-family: inherit; }
.field input::placeholder,
.field textarea::placeholder { color: var(--fg-muted); opacity: 1; }
.field input:hover,
.field textarea:hover { border-color: var(--fg-muted); }
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.btn-send {
  appearance: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 20px;
  margin-top: 8px;
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-fg);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 12px;
  transition: transform .15s, filter .2s, box-shadow .2s;
}
.btn-send:hover { transform: translateY(-1px); filter: brightness(1.05); box-shadow: 0 8px 24px var(--accent-soft); }
.btn-send:active { transform: translateY(0); }

.form-hint {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--fg-subtle);
  text-align: center;
}

.foot {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  background: var(--bg);
}
.foot-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
}
.socials {
  display: flex;
  gap: 16px;
}
.socials a {
  color: var(--fg-muted);
  display: inline-flex;
  align-items: center;
  transition: color .2s, transform .2s;
}
.socials a:hover { color: var(--accent); transform: translateY(-2px); }

.foot-meta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--fg-subtle);
}
.foot-meta .dot { opacity: 0.5; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media (max-width: 800px) {
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .hero { padding: 64px 0 48px; }
  .section { padding: 64px 0; }
  .principles li { grid-template-columns: 1fr; gap: 8px; padding: 20px 0; }
}