.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(7, 10, 18, 0.72);
  border-bottom: 1px solid var(--color-line);
}
.nav {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: -0.04em; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 14px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #071016;
  display: grid; place-items: center;
  box-shadow: 0 12px 36px rgba(101,240,196,0.18);
}
.nav-links { display: flex; align-items: center; gap: 20px; color: var(--color-muted); font-size: 0.95rem; }
.nav-links a { transition: color var(--transition-fast); }
.nav-links a:hover, .nav-links a.active { color: var(--color-text); }
.lang-switch { display: flex; gap: 6px; border: 1px solid var(--color-line); padding: 4px; border-radius: 999px; }
.lang-switch button {
  border: 0; background: transparent; color: var(--color-muted); padding: 6px 9px; border-radius: 999px; cursor: pointer;
}
.lang-switch button.active { background: rgba(255,255,255,0.08); color: var(--color-text); }

.hero {
  width: min(1520px, calc(100% - 48px));
  min-height: calc(100vh - 74px);
  display: grid;
  align-items: center;
  padding: 78px 0 40px;
}
.hero-grid {
  /* display: grid; */
  grid-template-columns: minmax(0, 1.18fr) minmax(420px, 0.82fr);
  gap: clamp(42px, 5vw, 86px);
  align-items: center;
}
.hero h1 {
  font-size: clamp(3rem, 6.6vw, 7rem);
  line-height: 0.92;
  margin: 0 0 24px;
  letter-spacing: -0.075em;
  /* max-width: 980px; */
}
.hero p { color: var(--color-muted); font-size: clamp(1.08rem, 2vw, 1.35rem); line-height: 1.7; max-width: 680px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-panel {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)),
    radial-gradient(circle at 20% 20%, rgba(101,240,196,0.18), transparent 20rem),
    var(--color-surface);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.orb {
  position: absolute; width: 260px; height: 260px; border-radius: 45% 55% 58% 42%;
  background: linear-gradient(135deg, rgba(101,240,196,0.9), rgba(126,167,255,0.65));
  filter: blur(0.2px);
  top: 96px; left: 50%; transform: translateX(-50%) rotate(12deg);
  opacity: 0.9;
  animation: floatOrb 7s ease-in-out infinite;
}
.grid-lines {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.055) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black, transparent 74%);
}
.panel-caption { position: absolute; left: 28px; right: 28px; bottom: 28px; padding: 22px; border: 1px solid var(--color-line); border-radius: 22px; background: rgba(7,10,18,0.62); backdrop-filter: blur(18px); }
.panel-caption strong { display: block; font-size: 1.1rem; margin-bottom: 8px; }
.panel-caption span { color: var(--color-muted); line-height: 1.55; }

.featured-list { display: grid; gap: 46px; margin-top: 42px; }
.tools-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 34px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-top: 34px; }
.footer { margin-top: 110px; border-top: 1px solid var(--color-line); padding: 30px 0; color: var(--color-muted-2); }

.project-hero { padding: 80px 0 40px; }
.project-hero-grid { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 46px; align-items: center; }
.project-hero h1 { font-size: clamp(3rem, 7vw, 6.8rem); line-height: 0.88; margin: 14px 0 18px; letter-spacing: -0.08em; }
.detail-grid { display: grid; grid-template-columns: 0.72fr 1.28fr; gap: 32px; align-items: start; margin-top: 52px; }
.detail-sidebar { position: sticky; top: 104px; }
.detail-content { display: grid; gap: 22px; }

@keyframes floatOrb {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(12deg); }
  50% { transform: translateX(-50%) translateY(-18px) rotate(20deg); }
}

@media (max-width: 900px) {
  .hero-grid, .project-hero-grid, .detail-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-panel { min-height: 360px; }
  .tools-grid { grid-template-columns: 1fr; }
  .nav { height: auto; padding: 14px 0; align-items: flex-start; }
  .nav, .nav-links { flex-wrap: wrap; }
  .detail-sidebar { position: static; }
}