body[data-tool="hub"] { overflow: hidden; background: #05070f; }
#field { position: fixed; inset: 0; width: 100vw; height: 100vh; height: 100dvh; display: block; z-index: 0; }
.vignette { position: fixed; inset: 0; z-index: 0; pointer-events: none; background: radial-gradient(ellipse at 60% 45%, transparent 38%, rgba(0,0,0,.6) 100%); }
#flash { position: fixed; inset: 0; z-index: 5; pointer-events: none; opacity: 0; --flash: #7cf2ff;
  background: radial-gradient(circle at 50% 50%, #ffffff 0%, var(--flash) 55%, #05070f 100%); transition: opacity .7s cubic-bezier(.6, 0, 1, 1); }
#flash.on { opacity: .9; }

.hub { position: relative; z-index: 1; height: 100vh; height: 100dvh; display: grid;
  grid-template-columns: minmax(320px, 540px) minmax(0, 1fr); grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas: "brand zone" "menu zone" "foot detail"; gap: 12px 32px; padding: clamp(16px, 3vw, 40px) clamp(16px, 5vw, 72px); }
.brand { grid-area: brand; display: flex; flex-direction: column; gap: 10px; }
.eyebrow { margin: 0; font: 600 .8rem/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
.brand h1 { font-size: clamp(1.4rem, 2.2vw + .6rem, 2.2rem); font-weight: 800; letter-spacing: -.02em; }
.search { display: flex; align-items: center; gap: 8px; }
.search input { flex: 1; min-width: 0; min-height: 44px; padding: 0 14px; font: inherit; color: var(--text); background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.4); border-radius: 12px; }
.search input::placeholder { color: var(--muted); opacity: 1; }
.search kbd { font: 600 .75rem var(--font-mono); color: var(--muted); border: 1px solid rgba(255,255,255,.35); border-radius: 6px; padding: 2px 7px; }
.count { font: 600 .8rem var(--font-mono); color: var(--muted); }
.announce { margin: 0; padding: 10px 14px; border-radius: 12px; font-size: .9rem; border: 1px solid rgba(255,255,255,.4); background: rgba(255,255,255,.08); }
.announce.warn { border-color: #ffd166; }

.menu { grid-area: menu; overflow-y: auto; min-height: 0; padding: 4px 8px 4px 0; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.35) transparent; }
.menu ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.item { --item-accent: #7cf2ff; position: relative; display: grid; grid-template-columns: 2.4rem minmax(0, 1fr) auto; align-items: baseline; gap: 8px;
  padding: 10px 12px; border-radius: 12px; color: var(--text); text-decoration: none;
  transition: transform .28s cubic-bezier(.2,.8,.2,1), opacity .25s, background .25s; }
.item .num { font: 600 .8rem var(--font-mono); color: var(--muted); }
.item .name { font-size: clamp(1.2rem, 2vw + .6rem, 2.2rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; transition: color .25s; overflow-wrap: anywhere; }
.item .cat { font: 600 .72rem var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.item::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 3px; height: 2px; background: var(--item-accent); transform: scaleX(0); transform-origin: left; transition: transform .38s cubic-bezier(.2,.8,.2,1); }
.item.active { transform: translateX(12px); background: rgba(255,255,255,.07); }
.item.active .name { color: var(--item-accent); }
.item.active::after { transform: scaleX(1); }
.menu.has-active .item:not(.active) { opacity: .55; }
.item:focus-visible { outline: 3px solid var(--item-accent); outline-offset: 2px; }
.empty { padding: 16px 12px; color: var(--muted); }

.zone { grid-area: zone; }
.detail { grid-area: detail; align-self: end; justify-self: start; width: min(440px, 100%); display: flex; flex-direction: column; gap: 8px; padding: 16px;
  border-radius: 18px; background: rgba(255,255,255,.07); border: 1px solid rgba(255,255,255,.4); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); min-height: 118px; }
.detail .d-cat { margin: 0; font: 600 .72rem var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); min-height: 1em; }
.detail .d-name { margin: 0; font-size: 1.1rem; font-weight: 700; min-height: 0; }
.detail .d-name:empty { display: none; }
.detail .d-desc { margin: 0; color: var(--text); font-size: .95rem; }
.open { --item-accent: #7cf2ff; align-self: flex-start; display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border-radius: 999px; font-weight: 700;
  background: var(--item-accent); color: #05070f; text-decoration: none; }
.open:hover { filter: brightness(1.08); }
.open:focus-visible { outline: 3px solid #fff; outline-offset: 3px; }
.foot { grid-area: foot; align-self: end; display: flex; flex-direction: column; gap: 4px; font-size: .8rem; color: var(--muted); }
.foot p { margin: 0; }

@media (max-width: 820px) {
  .hub { grid-template-columns: minmax(0, 1fr); grid-template-rows: auto clamp(110px, 22dvh, 230px) auto minmax(0, 1fr) auto; grid-template-areas: "brand" "zone" "detail" "menu" "foot"; gap: 8px; padding: 14px 16px; }
  .detail { justify-self: stretch; width: auto; min-height: 0; padding: 12px 14px; }
  .detail .d-desc { font-size: .88rem; }
  .item { grid-template-columns: 2rem minmax(0, 1fr); } .item .cat { display: none; }
  .item.active { transform: translateX(6px); }
  .search kbd { display: none; } .foot .keys { display: none; }
}
@media (max-height: 560px) and (min-width: 821px) { .detail .d-desc { display: none; } .detail { min-height: 0; } }
@media (prefers-reduced-motion: reduce) { .item, .item::after, #flash { transition: none; } }