html { scroll-behavior: smooth; }

/* a galeria perdida no espaço */
body { background: oklch(0.07 0.008 256); min-height: 100vh; overflow-x: hidden; }

/* canvas de fundo: o motor três-corpos (lente-campo) */
#field { position: fixed; inset: 0; z-index: 0; pointer-events: none; }

/* ---- nav global ---- */
.logo-bg { position: fixed; bottom: 5%; left: 3%; right: auto; width: clamp(8vw, 9.6vw, 12.6vw); opacity: 0.045; pointer-events: none; z-index: 2; user-select: none; }
.obs-top { position: fixed; top: 0; left: 0; right: 0; z-index: 32; display: flex; justify-content: space-between; align-items: center; padding: 0.7rem clamp(1.4rem, 3.5vw, 2.6rem); background: oklch(0.12 0.01 256 / 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom: 1px solid oklch(0.80 0.02 250 / 0.07); }
.obs-top .grp { display: flex; align-items: center; gap: 0.7rem; text-decoration: none; color: inherit; }
.obs-top { transition: background 0.5s var(--ease); }
.obs-top.scrolling { background: oklch(0.12 0.01 256 / 0.25); }
.logo-mark { height: 48px; width: auto; display: block; opacity: 0.9; flex-shrink: 0; }
.obs-top b { font-family: var(--serif); font-weight: 500; font-size: 0.96rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink); }
.obs-nav { display: flex; align-items: center; gap: clamp(0.6rem, 1.2vw, 1.2rem); }
.obs-nav__link { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); transition: color 0.18s; white-space: nowrap; text-decoration: none; }
.obs-nav__link:hover { color: var(--ink-soft); text-decoration: underline; text-decoration-color: var(--sun); text-underline-offset: 4px; text-decoration-thickness: 1px; }
.obs-nav__link.active { color: var(--ink-soft); text-decoration: underline; text-decoration-color: var(--sun); text-underline-offset: 4px; text-decoration-thickness: 1px; }
.obs-nav__link[href="digital-artisan.html"] { color: var(--sun); }
@media (max-width: 860px) {
  .obs-top { flex-wrap: wrap; }
  .obs-nav { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 0.4rem; scrollbar-width: none; }
  .obs-nav::-webkit-scrollbar { display: none; }
}

/* ---- cabeçalho da página ---- */
.page-head { position: relative; z-index: 4; text-align: center; padding: clamp(8rem, 15vh, 11rem) 2rem clamp(3rem, 6vh, 5rem); }
.page-head__eye { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--sun-soft); margin-bottom: 1.2rem; }
.page-head__title { font-family: var(--serif); font-style: italic; font-weight: 300; font-size: clamp(3.5rem, 11vw, 7.5rem); line-height: 0.86; letter-spacing: -0.03em; color: var(--ink); }
.page-head__title em { color: var(--sun); }
.page-head__sub { margin-top: 1.4rem; font-family: var(--serif); font-style: italic; color: var(--ink-mute); font-size: clamp(0.95rem, 1.4vw, 1.1rem); }
.page-head__hint { margin-top: 1.6rem; font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-faint); }

/* ---- rodapé ---- */
.foot { position: relative; z-index: 4; border-top: 1px solid oklch(0.80 0.02 250 / 0.07); padding: clamp(2.5rem, 5vh, 4rem) clamp(2rem, 5vw, 6rem); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 1rem; }
.foot a { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-mute); transition: color 0.18s; }
.foot a:hover { color: var(--sun); }
.foot .sig { font-family: var(--serif); font-style: italic; font-size: 0.88rem; color: var(--ink-faint); }
.obs-top .site-name { display: flex; flex-direction: column; justify-content: space-between; height: 48px; font-family: var(--mono); font-weight: 300; font-size: 0.60rem; letter-spacing: 0.15em; text-transform: uppercase; line-height: 1; gap: 0; }
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 999; padding: 1rem; background: var(--ground); }