*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

:root {
  --c-bg:        #0a0a0a;
  --c-bg-alt:    #141414;
  --c-bg-light:  #f5f5f5;
  --c-fg:        #f0f0f0;
  --c-fg-dark:   #0a0a0a;
  --c-muted:     #888888;
  --c-accent:    #00e5ff;
  --c-accent-dk: #00b8cc;
  --c-border:    #2a2a2a;
  --c-border-lt: #dcdcdc;
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6rem;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --font-display: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-body:    'Inter', 'Helvetica Neue', Arial, sans-serif;
  --z-nav: 10;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--c-fg);
  background-color: var(--c-bg);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
p  { font-size: 1rem; color: var(--c-muted); line-height: 1.7; }

.container {
  width: 100%;
  max-width: 900px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.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;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  padding-block: var(--space-2);
}
.site-header .container {
  max-width: 1200px;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.site-header .logo-img { width: 36px; height: 36px; flex-shrink: 0; }
.site-header .brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--c-fg);
}
.site-header .brand-name span { color: var(--c-accent); }

.page-hero {
  background: var(--c-bg-alt);
  border-bottom: 1px solid var(--c-border);
  padding-block: var(--space-5);
  text-align: center;
}
.page-hero .section-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: var(--space-2);
}
.page-hero h1 { margin-bottom: var(--space-2); }
.page-hero p  { color: var(--c-muted); max-width: 600px; margin-inline: auto; }

.page-content {
  padding-block: var(--space-6);
}
.page-content .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.content-block h2 {
  margin-bottom: var(--space-2);
  color: var(--c-fg);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--c-border);
}
.content-block h3 { margin-bottom: var(--space-1); color: var(--c-fg); margin-top: var(--space-3); }
.content-block p { margin-top: var(--space-2); }
.content-block ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-2);
  padding-left: var(--space-2);
}
.content-block ul li { font-size: 0.95rem; color: var(--c-muted); padding-left: var(--space-2); position: relative; }
.content-block ul li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--c-accent);
  font-weight: 700;
}

.about-blocks {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.about-block {
  padding-block: var(--space-5);
  border-bottom: 1px solid var(--c-border);
}
.about-block:last-child { border-bottom: none; }
.about-block-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  align-items: center;
}
.about-block-inner.reverse { direction: rtl; }
.about-block-inner.reverse > * { direction: ltr; }
.about-block img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--c-border);
}
.about-block h2 { margin-bottom: var(--space-2); }
.about-block p  { color: var(--c-muted); }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 0.03em;
}
.btn-primary { background: var(--c-accent); color: var(--c-fg-dark); }
.btn-primary:hover { background: var(--c-accent-dk); }

.site-footer {
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
  padding-block: var(--space-4);
}
.site-footer .container {
  max-width: 1200px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.footer-brand-row {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.footer-brand-row img { width: 28px; height: 28px; }
.footer-brand-row .brand-name {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--c-fg);
}
.footer-brand-row .brand-name span { color: var(--c-accent); }
.footer-copy { font-size: 0.8rem; color: var(--c-muted); }
.footer-links { display: flex; gap: var(--space-3); }
.footer-links a { font-size: 0.8rem; color: var(--c-muted); }
.footer-links a:hover { color: var(--c-accent); }

@media (max-width: 1024px) {
  .about-block-inner { grid-template-columns: 1fr; }
  .about-block-inner.reverse { direction: ltr; }
  .about-block img { aspect-ratio: 16/9; }
}
@media (max-width: 640px) {
  :root {
    --space-4: 1.5rem;
    --space-5: 2.5rem;
    --space-6: 3.5rem;
  }
  .container { padding-inline: var(--space-2); }
  .site-footer .container { flex-direction: column; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}