/* ============================
   Header
   ============================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.2rem clamp(1rem, 4vw, 3rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(180deg, rgba(10,8,7,0.9) 0%, rgba(10,8,7,0) 100%);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
.brand-mark {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.2em;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.brand-mark .logo-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark .logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.brand-mark .logo-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  line-height: 1.1;
}
.brand-mark em {
  font-family: var(--f-latin-2);
  font-style: normal;
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-ink-dim);
  margin-left: 0.8rem;
  vertical-align: middle;
}
.nav-primary {
  display: none;
  gap: 2rem;
  font-size: 0.85rem;
  letter-spacing: 0.25em;
}
.nav-primary a {
  position: relative;
  padding: 0.3rem 0;
}
.nav-primary a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1px;
  background: var(--c-accent);
  transition: all 0.3s;
  transform: translateX(-50%);
}
.nav-primary a:hover::after { width: 100%; }

@media (min-width: 900px) {
  .nav-primary { display: flex; }
}

.header-cta {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--c-ink);
  transition: all 0.3s;
}
.header-cta:hover {
  background: var(--c-accent);
  border-color: var(--c-accent);
}

/* ============================
   Section Common
   ============================ */
.section {
  padding: var(--space-xl) clamp(1rem, 4vw, 3rem);
  position: relative;
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-head {
  margin-bottom: var(--space-l);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.5rem;
  align-items: baseline;
}
.section-number {
  font-family: var(--f-latin-2);
  font-size: 1rem;
  letter-spacing: 0.3em;
  color: var(--c-accent);
}
.section-title {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
}
.section-title em {
  display: block;
  font-family: var(--f-latin);
  font-style: italic;
  font-weight: 400;
  font-size: 0.3em;
  letter-spacing: 0.2em;
  color: var(--c-ink-dim);
  margin-top: 0.5em;
}

/* ============================
   Footer
   ============================ */
.site-footer {
  background: var(--c-bg);
  padding: var(--space-m) clamp(1rem, 4vw, 3rem) var(--space-s);
  text-align: center;
  border-top: 1px solid var(--c-line);
}
.footer-brand {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 0.3em;
  margin-bottom: 1rem;
}
.footer-copy {
  font-family: var(--f-latin-2);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--c-ink-dim);
}

/* ============================
   Scroll reveal
   ============================ */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}