:root {
  --ink: #050814;
  --ink-2: #0a1020;
  --panel: rgba(12, 20, 40, 0.72);
  --line: rgba(150, 196, 255, 0.18);
  --line-strong: rgba(122, 240, 255, 0.45);
  --blue: #3aa0ff;
  --cyan: #7af0ff;
  --copper: #e4c48a;
  --text: #eef4ff;
  --muted: #9aabc4;
  --danger: #ffb4b4;
  --radius: 22px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.45);
  --header: 84px;
  --max: 1180px;
  --font: "Outfit", "Segoe UI", sans-serif;
  --display: "Syne", "Outfit", sans-serif;
  --script: "Noto Naskh Arabic", serif;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  background:
    radial-gradient(900px 500px at 85% -10%, rgba(58, 160, 255, 0.22), transparent 60%),
    radial-gradient(700px 420px at -10% 20%, rgba(228, 196, 138, 0.12), transparent 55%),
    radial-gradient(800px 500px at 50% 120%, rgba(80, 90, 255, 0.16), transparent 50%),
    var(--ink);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(122, 190, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 190, 255, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  z-index: 0;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.skip {
  position: absolute;
  left: 16px;
  top: -40px;
  background: var(--cyan);
  color: #041018;
  padding: 8px 12px;
  z-index: 20;
}
.skip:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  height: var(--header);
  display: flex;
  align-items: center;
  backdrop-filter: blur(18px);
  background: rgba(5, 8, 20, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }

.nav-wrap,
.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 24px rgba(58, 160, 255, 0.35);
}
.brand strong {
  display: block;
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.14em;
  line-height: 1;
}
.brand em {
  display: block;
  margin-top: 4px;
  font-style: normal;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--copper);
}

#site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
#site-nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  padding: 8px 12px;
  border-radius: 999px;
}
#site-nav a:hover,
#site-nav a.active { color: var(--text); background: rgba(122, 240, 255, 0.08); }
#site-nav a.active { color: var(--cyan); }

.nav-toggle {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

main { position: relative; z-index: 1; }

.hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  padding: 64px 0 36px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.75rem;
  margin-bottom: 18px;
}
.kicker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--cyan);
}

h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: -0.03em; line-height: 1.05; margin: 0; }
h1 { font-size: clamp(3rem, 6vw, 5.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3.2rem); }
h3 { font-size: 1.35rem; }

.lede {
  color: var(--muted);
  font-size: 1.12rem;
  max-width: 62ch;
  margin: 22px 0 0;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  border-radius: 999px;
  padding: 13px 20px;
  border: 1px solid transparent;
  font-weight: 500;
  letter-spacing: 0.01em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(180deg, #e9fdff, var(--cyan));
  color: #041018;
  box-shadow: 0 10px 30px rgba(122, 240, 255, 0.22);
}
.btn-ghost {
  border-color: var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.btn-copper {
  background: linear-gradient(180deg, #f3e2c2, var(--copper));
  color: #2a1c08;
}

.core {
  position: relative;
  width: min(100%, 460px);
  aspect-ratio: 1;
  min-height: 420px;
  margin-inline: auto;
  justify-self: center;
}
.ring {
  position: absolute;
  inset: 8%;
  border-radius: 50%;
  border: 1px solid rgba(122, 240, 255, 0.28);
  animation: spin 28s linear infinite;
}
.ring.r2 { inset: 18%; border-style: dashed; animation-duration: 18s; animation-direction: reverse; }
.ring.r3 { inset: 30%; border-color: rgba(228, 196, 138, 0.45); animation-duration: 12s; }
.core-mark {
  position: absolute;
  inset: 36%;
  border-radius: 28px;
  display: grid;
  place-items: center;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.2), transparent 40%),
    linear-gradient(160deg, #1a6dff, #0a4ea8);
  box-shadow: 0 0 80px rgba(58, 160, 255, 0.45);
}
.core-mark img { width: 72%; height: auto; border-radius: 18px; }
.script-float {
  position: absolute;
  font-family: var(--script);
  color: var(--copper);
  font-size: 1.35rem;
  letter-spacing: 0;
}
.script-float.a { top: 6%; left: 18%; }
.script-float.b { right: 8%; top: 28%; }
.script-float.c { bottom: 14%; left: 10%; }
.script-float.d { right: 16%; bottom: 8%; color: var(--cyan); }

@keyframes spin { to { transform: rotate(360deg); } }

.ticker {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: rgba(8, 14, 28, 0.65);
  margin-top: 28px;
}
.ticker-track {
  display: flex;
  gap: 42px;
  width: max-content;
  padding: 14px 0;
  animation: march 28s linear infinite;
  color: var(--muted);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.78rem;
}
.ticker b { color: var(--text); font-weight: 500; }
@keyframes march { to { transform: translateX(-50%); } }

.section { padding: 88px 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 36px;
}
.index-no {
  font-family: var(--display);
  color: var(--copper);
  letter-spacing: 0.16em;
  font-size: 0.8rem;
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}
.frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  background: #07101f;
}
.frame img { width: 100%; height: 100%; object-fit: cover; min-height: 280px; }
.frame.contain { background: #f4f8ff; }
.frame.contain img { object-fit: contain; background: #f4f8ff; max-height: 440px; }
.frame figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  background: rgba(5, 8, 20, 0.72);
  border: 1px solid var(--line);
  backdrop-filter: blur(10px);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--cyan);
}
.frame.contain figcaption { position: static; margin: 0; border-radius: 0; border: 0; border-top: 1px solid var(--line); background: #07101f; }

.grid-3, .grid-4, .grid-2 { display: grid; gap: 18px; align-items: stretch; }
.card, .tier { height: 100%; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card, .paper, .tier {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  backdrop-filter: blur(10px);
}
.card h3, .paper h3, .tier h3 { margin-bottom: 10px; }
.card p, .paper p, .tier p { color: var(--muted); margin: 0; }
.card ul, .tier ul { margin: 14px 0 0; padding-left: 18px; color: var(--text); }
.card li + li, .tier li + li { margin-top: 6px; }

.icon-row { display: flex; gap: 10px; align-items: center; margin-bottom: 12px; color: var(--cyan); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; }

.media-card { padding: 0; overflow: hidden; }
.media-card img { width: 100%; height: 190px; object-fit: cover; background: #fff; }
.media-card .pad { padding: 22px; }
.media-card.ocr img { object-fit: contain; background: #f7fbff; height: 210px; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 28px;
}
.stat {
  padding: 18px 16px;
  border-top: 1px solid var(--line-strong);
}
.stat strong {
  display: block;
  font-family: var(--display);
  font-size: 1.7rem;
  color: var(--text);
}
.stat span { color: var(--muted); font-size: 0.9rem; }

.band {
  margin: 10px 0 20px;
  border-radius: 32px;
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(58, 160, 255, 0.16), rgba(228, 196, 138, 0.08)),
    rgba(8, 14, 28, 0.8);
  padding: 48px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.filter {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font: inherit;
  cursor: pointer;
}
.filter.active, .filter:hover { color: #041018; background: var(--cyan); border-color: var(--cyan); }

.papers { display: grid; gap: 16px; }
.paper-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: start;
  margin-bottom: 10px;
}
.meta { color: var(--copper); font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; }
.doi {
  flex: none;
  text-decoration: none;
  color: #041018;
  background: var(--cyan);
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
}
.doi.alt {
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
}
.paper-links { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.hidden { display: none; }

.founder {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 28px;
  align-items: center;
}
.founder img {
  width: 100%;
  border-radius: 20px;
  border: 1px solid var(--line);
  object-fit: cover;
  max-height: 360px;
}

.links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.chip {
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}
.chip:hover { border-color: var(--cyan); color: var(--cyan); }

form {
  display: grid;
  gap: 12px;
}
label { display: grid; gap: 6px; font-size: 0.9rem; color: var(--muted); }
input, select, textarea {
  width: 100%;
  background: rgba(4, 8, 18, 0.7);
  border: 1px solid var(--line);
  color: var(--text);
  border-radius: 14px;
  padding: 12px 14px;
  font: inherit;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(122, 240, 255, 0.45); border-color: transparent; }
.note { color: var(--danger); font-size: 0.92rem; }

.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  color: var(--muted);
}
.foot {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.foot a { color: var(--cyan); }

.page-hero { padding: 54px 0 10px; }
.page-hero h1 { font-size: clamp(2.6rem, 5vw, 4.4rem); }

.doc {
  padding-bottom: 80px;
}
.doc-mast { text-align: center; }
.doc-mast h1 { font-size: clamp(2.1rem, 4vw, 3.3rem); }
.doc-mast .kicker { justify-content: center; }
.doc-mast img {
  width: min(300px, 72%);
  height: auto;
  margin: 18px auto 0;
}
.doc-mast .links { justify-content: center; }
.doc h2 {
  margin-top: 2.4rem;
  font-size: clamp(1.45rem, 2vw, 1.85rem);
}
.doc h3 {
  margin-top: 1.4rem;
  font-size: 1.05rem;
}
.doc p { color: var(--muted); }
.doc ol, .doc ul { color: var(--text); padding-left: 1.2rem; }
.doc li + li { margin-top: 0.35rem; }

@media (max-width: 980px) {
  .hero, .split, .founder, .grid-3, .grid-4, .stats, .grid-2 { grid-template-columns: 1fr; }
  .band, .section-head, .foot, .paper-top { flex-direction: column; align-items: start; }
  .paper-links { justify-content: start; }
  .nav-toggle { display: inline-flex; }
  #site-nav {
    display: none;
    position: absolute;
    top: var(--header);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 12px 20px 20px;
    background: rgba(5, 8, 20, 0.96);
    border-bottom: 1px solid var(--line);
  }
  #site-nav.open { display: flex; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}