:root {
  --bg-canvas: #1c1f24;
  --bg-band-alt: #16181c;
  --bg-surface: #282d32;
  --bg-surface-hover: #30363c;
  --text-primary: #e5e7eb;
  --text-muted: #9ca3af;
  --accent-primary: #14b8a6;
  --accent-secondary: #0d9488;
  --border-subtle: rgba(20, 184, 166, 0.28);
  --ease-kinetic: cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 12px 32px -4px rgba(0, 0, 0, 0.45);
  --glow-accent: 0 0 24px -4px rgba(20, 184, 166, 0.32);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  line-height: 1.72;
  font-size: 16px;
  overflow-wrap: anywhere;
  hyphens: auto;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.25s var(--ease-kinetic);
}

a:hover, a:focus-visible {
  color: #5eead4;
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

.site-header {
  position: relative;
  background-color: var(--bg-band-alt);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.header-top-row {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.brand-mark:hover {
  text-decoration: none;
  color: var(--accent-primary);
}

.brand-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--bg-surface);
  border: 2px solid var(--accent-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-primary);
  font-size: 0.75rem;
  font-weight: 700;
}

.header-nav-row {
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding: 0.65rem 1.5rem;
}

.main-nav {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.main-nav a {
  color: var(--text-primary);
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.35rem 0;
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

.mobile-menu-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--accent-primary);
  color: var(--text-primary);
  font-size: 1.35rem;
  line-height: 1;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
}

.band {
  width: 100%;
  padding: 4.5rem 1.5rem;
  position: relative;
}

.band-primary {
  background-color: var(--bg-canvas);
}

.band-alt {
  background-color: var(--bg-band-alt);
}

.band-glow {
  background-image: radial-gradient(circle at 50% 35%, rgba(20, 184, 166, 0.13) 0%, rgba(28, 31, 36, 0) 68%);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
}

.prose-width {
  max-width: 70ch;
}

.hero-band {
  padding: 6rem 1.5rem 5.5rem;
  background-color: var(--bg-canvas);
  background-image: radial-gradient(circle at 30% 40%, rgba(20, 184, 166, 0.16) 0%, rgba(28, 31, 36, 0) 62%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.obs-label {
  display: inline-block;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--accent-primary);
  margin-bottom: 0.85rem;
  font-weight: 700;
}

.circle-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background-color: rgba(20, 184, 166, 0.14);
  color: var(--accent-primary);
  font-weight: 700;
  font-size: 0.82rem;
  flex-shrink: 0;
}

h1 {
  font-size: clamp(2.35rem, 4.8vw, 3.85rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin-bottom: 1.35rem;
  color: var(--text-primary);
  max-width: 22ch;
}

h2 {
  font-size: clamp(1.55rem, 2.8vw, 2.15rem);
  line-height: 1.25;
  margin-bottom: 1.1rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.22rem;
  line-height: 1.35;
  margin-bottom: 0.65rem;
  color: var(--text-primary);
}

p {
  margin-bottom: 1.2rem;
  color: var(--text-primary);
}

.lead {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 66ch;
  margin-bottom: 2rem;
}

.btn {
  display: inline-block;
  background-color: transparent;
  color: var(--accent-primary);
  border: 1.5px solid var(--accent-primary);
  border-radius: 0;
  padding: 0.85rem 1.65rem;
  font-size: 0.84rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.3s var(--ease-kinetic), box-shadow 0.3s var(--ease-kinetic), background-color 0.3s var(--ease-kinetic), color 0.3s var(--ease-kinetic);
}

.btn:hover, .btn:focus-visible {
  background-color: rgba(20, 184, 166, 0.12);
  color: #e5e7eb;
  text-decoration: none;
  transform: translateY(-3px);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
  margin-top: 2rem;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.panel {
  background-color: var(--bg-surface);
  border: none;
  border-radius: 0;
  padding: 2rem;
  box-shadow: var(--shadow-elevation);
  transition: transform 0.35s var(--ease-kinetic), box-shadow 0.35s var(--ease-kinetic), background-color 0.35s var(--ease-kinetic);
}

.panel:hover {
  transform: translateY(-5px) scale(1.01);
  background-color: var(--bg-surface-hover);
  box-shadow: var(--shadow-elevation), var(--glow-accent);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1rem;
}

.vector-frame {
  background-color: #16181c;
  padding: 1.5rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-elevation);
}

.vector-caption {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  letter-spacing: 0.04em;
}

.img-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: #16181c;
  margin: 1.25rem 0;
  overflow: hidden;
}

.img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.75rem 0;
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-elevation);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.94rem;
}

th, td {
  padding: 1rem 1.2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

th {
  color: var(--accent-primary);
  text-transform: uppercase;
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  background-color: rgba(0, 0, 0, 0.2);
}

.checklist {
  list-style: none;
  margin: 1.25rem 0;
}

.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.check-box {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--accent-primary);
  display: inline-block;
  margin-top: 0.25rem;
  flex-shrink: 0;
  position: relative;
}

.check-box::after {
  content: "";
  position: absolute;
  inset: 3px;
  background-color: var(--accent-primary);
}

.accordion-item {
  background-color: var(--bg-surface);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-elevation);
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--text-primary);
  padding: 1.35rem 1.75rem;
  font-family: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.accordion-trigger span.indicator {
  color: var(--accent-primary);
  font-size: 1.25rem;
}

.accordion-panel {
  padding: 0 1.75rem 1.5rem;
  color: var(--text-muted);
  display: none;
}

.accordion-item.open .accordion-panel {
  display: block;
}

.form-grid {
  display: grid;
  gap: 1.25rem;
}

.form-field label {
  display: block;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-primary);
  margin-bottom: 0.45rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  background-color: #16181c;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0;
  color: var(--text-primary);
  padding: 0.85rem 1rem;
  font-family: inherit;
  font-size: 0.98rem;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--accent-primary);
  outline: none;
}

.preview-box {
  background-color: #16181c;
  padding: 1.5rem;
  font-family: monospace;
  white-space: pre-wrap;
  color: var(--text-primary);
  font-size: 0.88rem;
  min-height: 210px;
  border-left: 3px solid var(--accent-primary);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
}

.site-footer {
  background-color: #121417;
  padding: 4rem 1.5rem 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2.5rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.55rem;
}

.footer-bottom {
  max-width: 1100px;
  margin: 2.5rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
}

.reveal {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.65s var(--ease-kinetic), transform 0.65s var(--ease-kinetic);
}

.js-enabled .reveal {
  opacity: 0;
  transform: translateY(18px);
}

.js-enabled .reveal.reveal-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 767px) {
  .mobile-menu-btn {
    display: inline-block;
  }
  .header-nav-row {
    display: none;
    background-color: var(--bg-surface);
    padding: 1rem 1.5rem;
  }
  .header-nav-row.nav-open {
    display: block;
  }
  .main-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
  .band {
    padding: 3.25rem 1.25rem;
  }
  .hero-band {
    padding: 4rem 1.25rem 3.5rem;
  }
}

@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}