:root {
  --bg: #0a0a0a;
  --ink: #f4f4f4;
  --muted: #9a9a9a;
  --line: rgba(255,255,255,0.08);
  --tile-bg: #141414;
  --gap: 6px;
  --pad: 18px;
  --radius: 14px;
  --pill-bg: rgba(20,20,20,0.72);
  --pill-ink: #f4f4f4;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-feature-settings: "cv11", "ss01";
  -webkit-font-smoothing: antialiased;
}

@supports (font-variation-settings: normal) {
  html, body { font-family: "InterVariable", "Inter", sans-serif; }
}

a { color: inherit; text-decoration: none; }

.topbar {
  position: fixed;
  top: 14px;
  left: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
  pointer-events: none;
}

.brand, .nav {
  pointer-events: auto;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--pill-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  font-size: 12px;
  letter-spacing: 0.14em;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 20px;
}

.brand .reg {
  font-size: 9px;
  vertical-align: super;
  margin-left: 2px;
  opacity: 0.7;
}

.nav a {
  color: var(--pill-ink);
  transition: opacity 120ms ease;
}
.nav a:hover { opacity: 0.6; }

.mosaic {
  padding: 84px var(--gap) var(--gap);
  column-gap: var(--gap);
  column-count: 5;
}

@media (max-width: 1400px) { .mosaic { column-count: 4; } }
@media (max-width: 1100px) { .mosaic { column-count: 3; } }
@media (max-width: 780px)  { .mosaic { column-count: 2; } }
@media (max-width: 480px)  { .mosaic { column-count: 1; } }

.card {
  position: relative;
  display: block;
  background: var(--tile-bg);
  border-radius: var(--radius);
  overflow: hidden;
  break-inside: avoid;
  margin-bottom: var(--gap);
  cursor: pointer;
  isolation: isolate;
}

.card .media {
  display: block;
  width: 100%;
  height: auto;
  transition: transform 700ms cubic-bezier(.2,.7,.2,1), filter 400ms ease;
}

.card:hover .media { transform: scale(1.02); filter: brightness(1.05); }

.card .meta {
  position: absolute;
  left: 14px;
  bottom: 14px;
  right: 14px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 220ms ease, transform 220ms ease;
  z-index: 2;
  pointer-events: none;
}

.card::after {
  content: "";
  position: absolute;
  inset: 40% 0 0 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.55) 100%);
  opacity: 0;
  transition: opacity 220ms ease;
  z-index: 1;
  pointer-events: none;
}

.card:hover .meta,
.card:focus-visible .meta { opacity: 1; transform: none; }
.card:hover::after,
.card:focus-visible::after { opacity: 1; }

.card .title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.25;
  margin: 0;
  color: #fff;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.card .date {
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  margin: 0;
  white-space: nowrap;
  text-shadow: 0 1px 8px rgba(0,0,0,0.4);
}

.card .badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: var(--pill-bg);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 9px;
  color: #fff;
  z-index: 2;
  opacity: 0;
  transition: opacity 220ms ease;
}
.card:hover .badge { opacity: 1; }

/* Reader (fullscreen takeover) */
.reader {
  position: fixed;
  inset: 0;
  border: none;
  padding: 0;
  margin: 0;
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
  box-sizing: border-box;
}

.reader::backdrop { background: rgba(0,0,0,0.9); }

.reader-close {
  position: fixed;
  top: 16px;
  right: 16px;
  z-index: 100;
  background: var(--pill-bg);
  color: var(--pill-ink);
  border: 1px solid var(--line);
  backdrop-filter: blur(14px);
  border-radius: 999px;
  width: 40px;
  height: 40px;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.reader-close:hover { opacity: 0.8; }

.reader-body {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.reader-body::-webkit-scrollbar { width: 0; height: 0; display: none; }

.reader-inner {
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 96px 28px 140px;
  box-sizing: border-box;
}

.reader-inner .cover {
  margin: 0 0 48px;
  border-radius: var(--radius);
  overflow: hidden;
  background: #111;
}
.reader-inner .cover img { display: block; width: 100%; height: auto; }

.reader-inner h1 {
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 14px;
}

.reader-inner .headline-date {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 48px;
}

.reader-inner .block { margin: 36px 0; }
.reader-inner .block img,
.reader-inner .block video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}
.reader-inner .block audio { width: 100%; }
.reader-inner .block.text {
  font-size: 16px;
  line-height: 1.65;
  color: #e0e0e0;
  white-space: pre-wrap;
}
.reader-inner .block .caption {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
}

@media (max-width: 600px) {
  .reader-inner { padding: 72px 18px 100px; }
}

/* View Transitions morph */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 380ms;
  animation-timing-function: cubic-bezier(.2,.7,.2,1);
}