/* ===========================================================
   CoMind — project page
   Minimal, academic, modern.
   =========================================================== */

:root {
  --bg:        #fafaf9;
  --bg-soft:   #f4f4f2;
  --bg-dark:   #0f1115;
  --surface:   #ffffff;
  --text:      #17181c;
  --text-2:    #55585f;
  --text-mute: #8a8d94;
  --border:    #e7e6e2;
  --accent:    #2f6df6;   /* single accent color */
  --accent-2:  #7aa2ff;
  --radius:    14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(16,18,22,.04), 0 2px 6px rgba(16,18,22,.04);
  --shadow-md: 0 4px 14px rgba(16,18,22,.06), 0 12px 32px rgba(16,18,22,.06);
  --maxw: 1120px;
  --ease: cubic-bezier(.2,.7,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { font-weight: 600; letter-spacing: -0.015em; color: var(--text); }
code, pre { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace; }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  background: rgba(250,250,249,.8);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 14px 28px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav__brand {
  font-weight: 700; color: var(--text); letter-spacing: -0.01em;
  font-size: 16px;
}
.nav__brand:hover { text-decoration: none; }
.nav__links {
  display: flex; gap: 26px; list-style: none; margin: 0; padding: 0;
}
.nav__links a {
  color: var(--text-2); font-size: 14px; font-weight: 500;
}
.nav__links a {
  position: relative;
  transition: color .2s var(--ease);
}
.nav__links a:hover { color: var(--text); text-decoration: none; }
.nav__links a.is-active { color: var(--accent); }
.nav__links a.is-active::after {
  content: '';
  position: absolute; bottom: -6px; left: 50%; transform: translateX(-50%);
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--accent);
}

@media (max-width: 720px) {
  .nav__links { display: none; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: calc(100dvh - 53px);
  display: flex;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.hero__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 80px 28px 48px;
  position: relative; z-index: 2;
  width: 100%;
}
.hero__bg {
  position: absolute; inset: -50px; z-index: 1;
  pointer-events: none;
}
.hero__bg::before,
.hero__bg::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  will-change: transform;
}
.hero__bg::before {
  width: 520px; height: 340px;
  top: 40px; right: 60px;
  background: rgba(47,109,246,.10);
  animation: blob1 10s ease-in-out infinite alternate;
}
.hero__bg::after {
  width: 440px; height: 300px;
  bottom: 60px; left: 40px;
  background: rgba(122,162,255,.10);
  animation: blob2 12s ease-in-out infinite alternate;
}
@keyframes blob1 {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(100px, 50px) scale(1.15); }
  66%  { transform: translate(-40px, 80px) scale(0.95); }
  100% { transform: translate(60px, -30px) scale(1.08); }
}
@keyframes blob2 {
  0%   { transform: translate(0, 0) scale(1); }
  33%  { transform: translate(-80px, -40px) scale(1.12); }
  66%  { transform: translate(60px, -60px) scale(0.92); }
  100% { transform: translate(-30px, 50px) scale(1.05); }
}
/* Floating thematic icons */
.float-icon {
  position: absolute;
  color: var(--accent);
  opacity: .07;
  will-change: transform;
}
.fi--1 { width: 52px; top: 12%; left: 8%;  opacity: .30; animation: fi1 18s ease-in-out infinite alternate; }
.fi--2 { width: 40px; top: 6%;  right: 14%; opacity: .30; animation: fi2 22s ease-in-out infinite alternate; }
.fi--3 { width: 56px; top: 55%; left: 5%;  opacity: .30; animation: fi3 20s ease-in-out infinite alternate; }
.fi--4 { width: 44px; top: 18%; right: 6%; opacity: .30; animation: fi4 16s ease-in-out infinite alternate; }
.fi--5 { width: 38px; top: 70%; right: 10%;opacity: .30; animation: fi5 24s ease-in-out infinite alternate; }
.fi--6 { width: 46px; top: 40%; left: 15%; opacity: .30; animation: fi6 19s ease-in-out infinite alternate; }
.fi--7 { width: 36px; top: 80%; left: 30%; opacity: .30; animation: fi7 21s ease-in-out infinite alternate; }
.fi--8 { width: 42px; top: 30%; right: 22%;opacity: .30; animation: fi8 17s ease-in-out infinite alternate; }

@keyframes fi1 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(30px,40px) rotate(8deg); }
  100% { transform: translate(-20px,60px) rotate(-5deg); }
}
@keyframes fi2 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(-40px,30px) rotate(-10deg); }
  100% { transform: translate(20px,50px) rotate(6deg); }
}
@keyframes fi3 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(50px,-30px) rotate(12deg); }
  100% { transform: translate(-10px,-50px) rotate(-4deg); }
}
@keyframes fi4 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(-30px,50px) rotate(-8deg); }
  100% { transform: translate(40px,20px) rotate(10deg); }
}
@keyframes fi5 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(35px,-40px) rotate(6deg); }
  100% { transform: translate(-25px,-20px) rotate(-12deg); }
}
@keyframes fi6 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(-20px,35px) rotate(-6deg); }
  100% { transform: translate(45px,-15px) rotate(8deg); }
}
@keyframes fi7 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(25px,-45px) rotate(10deg); }
  100% { transform: translate(-35px,20px) rotate(-7deg); }
}
@keyframes fi8 {
  0%   { transform: translate(0,0) rotate(0deg); }
  50%  { transform: translate(-45px,25px) rotate(-12deg); }
  100% { transform: translate(15px,-35px) rotate(5deg); }
}

.hero__eyebrow {
  display: inline-block;
  font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--accent); font-weight: 600;
  padding: 6px 12px; border: 1px solid rgba(47,109,246,.25);
  border-radius: 999px; background: rgba(47,109,246,.06);
  margin-bottom: 24px;
}
.hero__title {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.08; margin: 0 0 22px;
  letter-spacing: -0.025em;
}
.hero__title > span:first-child {
  background: linear-gradient(135deg, var(--text) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__title-accent {
  color: var(--text-2); font-weight: 500;
  font-size: clamp(22px, 3vw, 32px);
}
.hero__subtitle {
  max-width: 780px;
  font-size: 18px; color: var(--text-2);
  margin: 0 0 32px;
}
.hero__subtitle strong { color: var(--text); font-weight: 600; }

.hero__cta {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 40px;
}

/* Hero recording grid */
.recgrid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

/* Each recording card */
.rec {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform .6s var(--ease), border-color .6s var(--ease), box-shadow .6s var(--ease), opacity .6s var(--ease);
  background: #000;
  cursor: pointer;
}
/* Peek: hovered card lifts, siblings dim */
.rec.is-peeking {
  transform: scale(1.04);
  border-color: rgba(47,109,246,.4);
  box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 0 rgba(47,109,246,.3);
  animation: peekPulse 1.2s ease-in-out infinite alternate;
  transition: transform .6s var(--ease), border-color .6s var(--ease), box-shadow .6s var(--ease);
}
.recgrid.has-peek .rec:not(.is-peeking) {
  opacity: .45;
  transform: scale(0.97);
}
@keyframes peekPulse {
  0%   { box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 0px rgba(47,109,246,.4); }
  100% { box-shadow: 0 16px 48px rgba(0,0,0,.15), 0 0 0 14px rgba(47,109,246,.0); }
}
.rec:hover:not(.is-peeking) {
  border-color: rgba(47,109,246,.15);
}

/* Ghost — flies from card position to screen center */
.rec-ghost {
  position: fixed;
  z-index: 9999;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(47,109,246,.3);
  background: #000;
  pointer-events: auto;
  box-shadow: 0 24px 80px rgba(0,0,0,.25), 0 8px 24px rgba(47,109,246,.12);
  transition: top .5s var(--ease), left .5s var(--ease), width .5s var(--ease), box-shadow .5s var(--ease);
  cursor: zoom-out;
}
.rec-ghost.is-centered {
  box-shadow: 0 40px 100px rgba(0,0,0,.3), 0 12px 40px rgba(47,109,246,.15);
}
.rec-ghost.is-leaving {
  transition: top .35s var(--ease), left .35s var(--ease), width .35s var(--ease), opacity .35s var(--ease);
  opacity: 0;
}

/* Dim overlay */
.rec-overlay {
  position: fixed; inset: 0; z-index: 9998;
  background: rgba(0,0,0,.2);
  backdrop-filter: blur(3px);
  opacity: 0;
  transition: opacity .4s var(--ease);
  cursor: zoom-out;
}
.rec-overlay.is-visible { opacity: 1; }

@media (max-width: 720px) {
  .recgrid { grid-template-columns: 1fr; }
}
.rec__screen {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.rec__pane {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.rec__pane video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.rec__tag {
  position: absolute; top: 8px; left: 8px;
  width: 22px; height: 22px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(4px);
  color: #fff; font-size: 11px; font-weight: 600;
  border: 1px solid rgba(255,255,255,.15);
}
.rec__div {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  background: rgba(255,255,255,.2);
  z-index: 2;
  transform: translateX(-1px);
}
.rec__cap {
  padding: 10px 14px;
  background: var(--bg-dark);
  color: rgba(255,255,255,.7);
  font-size: 13px; font-weight: 500;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,.06);
}
@media (max-width: 720px) {
  .rec { flex: 0 0 320px; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text);
  font-size: 14px; font-weight: 500;
  transition: all .2s var(--ease);
  cursor: pointer;
}
.btn:hover {
  text-decoration: none;
  border-color: var(--text);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn--primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
.btn--primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Stats strip */
.stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.stat { text-align: center; padding: 6px; }
.stat__num {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, var(--text) 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat__lbl {
  font-size: 12px; color: var(--text-mute);
  text-transform: uppercase; letter-spacing: .08em;
  margin-top: 4px;
}
@media (max-width: 720px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- SECTIONS ---------- */
.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--border);
}
.section--soft { background: var(--bg-soft); }
.section--dark {
  background: var(--bg-dark);
  color: #e6e8ec;
}
.section--dark h2,
.section--dark h3 { color: #f5f6f8; }
.section--dark .section__sub { color: #a9adb6; }
.section--dark .section__kicker { color: var(--accent-2); }

.section__head { max-width: 760px; margin-bottom: 48px; }
.section__kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); font-weight: 600;
  margin-bottom: 12px;
}
.section__kicker::before {
  content: '';
  display: inline-block;
  width: 24px; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 2px;
}
.section__title {
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.15; margin: 0 0 14px;
  letter-spacing: -0.02em;
}
.section__sub {
  font-size: 17px; color: var(--text-2); margin: 0;
}

/* ---------- OVERVIEW ---------- */
.overview-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: start;
}
.lede { font-size: 17px; color: var(--text-2); margin: 0; }
.lede strong { color: var(--text); font-weight: 600; }
.feature-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 14px;
}
.feature-list li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14.5px;
}
.feature-list b { color: var(--text); }
.feature-list .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent); flex: none; margin-top: 8px;
}
@media (max-width: 880px) { .overview-grid { grid-template-columns: 1fr; gap: 32px; } }

/* ---------- DUAL-VIEW PLAYER ---------- */
.dualplayer {
  background: #16181d;
  border: 1px solid #23262d;
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
}
.dualplayer__views {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.ego {
  position: relative; margin: 0;
  background: #000;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.ego video {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.ego__label {
  position: absolute; top: 12px; left: 12px;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px; font-weight: 500;
  padding: 6px 10px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  letter-spacing: .02em;
}
.dualplayer__controls {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 4px 4px;
}
.pbtn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid #2a2d35;
  background: #20232a;
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  display: inline-flex; align-items: center; justify-content: center;
  transition: all .2s var(--ease);
}
.pbtn:hover { background: var(--accent); border-color: var(--accent); }
.pbtn--ghost {
  width: auto; padding: 0 14px; border-radius: 999px;
  font-size: 12px; letter-spacing: .04em;
}
.pbar {
  flex: 1;
  -webkit-appearance: none; appearance: none;
  height: 4px; border-radius: 99px;
  background: #2a2d35;
  outline: none;
}
.pbar::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent-2); cursor: pointer;
  border: 2px solid #fff;
}
.pbar::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent-2); cursor: pointer; border: 2px solid #fff;
}
.ptime {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; color: #a9adb6;
  min-width: 110px; text-align: right;
}
.sessions {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding-top: 14px;
  border-top: 1px solid #23262d;
  margin-top: 14px;
}
.chip {
  padding: 8px 14px;
  background: transparent;
  border: 1px solid #2a2d35;
  color: #c8ccd4;
  font-size: 13px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .2s var(--ease);
}
.chip:hover { border-color: var(--accent-2); color: #fff; }
.chip--active {
  background: var(--accent); color: #fff; border-color: var(--accent);
}
@media (max-width: 720px) {
  .dualplayer__views { grid-template-columns: 1fr; }
}

/* ---------- SCANS ---------- */
.scans-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
}
.scan-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s var(--ease);
}
.scan-card::before {
  content: '';
  position: absolute; inset: 0; z-index: 1;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(135deg, rgba(47,109,246,.25), transparent 50%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}
.scan-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(47,109,246,.08), var(--shadow-md);
  border-color: transparent;
}
.scan-card:hover::before { opacity: 1; }
.scan-card__media img {
  transition: transform .5s var(--ease);
}
.scan-card:hover .scan-card__media img {
  transform: scale(1.04);
}
.scan-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, #eceaf0, #d9dae0);
  overflow: hidden;
}
.scan-card__media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.scan-card__badge {
  position: absolute; top: 14px; left: 14px;
  background: rgba(15,17,21,.78); color: #fff;
  backdrop-filter: blur(6px);
  padding: 6px 12px; border-radius: 999px;
  font-size: 12px; font-weight: 500;
}
.scan-card__body { padding: 24px 26px 26px; }
.scan-card__body h3 { margin: 0 0 10px; font-size: 20px; }
.scan-card__body p { margin: 0 0 16px; color: var(--text-2); font-size: 14.5px; }
.meta {
  list-style: none; padding: 0; margin: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.meta li {
  font-size: 12px; color: var(--text-2);
  padding: 5px 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.meta code {
  font-size: 11.5px; color: var(--text);
  background: transparent;
}
@media (max-width: 880px) { .scans-grid { grid-template-columns: 1fr; } }

/* ---------- TASKS ---------- */
.tasks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.task {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px 28px;
  transition: all .3s var(--ease);
}
.task::before {
  content: '';
  position: absolute; inset: 0;
  border-radius: var(--radius);
  padding: 1px;
  background: linear-gradient(180deg, rgba(47,109,246,.2), transparent 60%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .3s var(--ease);
  pointer-events: none;
}
.task:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(47,109,246,.08), var(--shadow-md);
  border-color: transparent;
}
.task:hover::before { opacity: 1; }
.task__num {
  display: inline-block;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px; font-weight: 600;
  color: var(--accent);
  background: rgba(47,109,246,.08);
  border: 1px solid rgba(47,109,246,.2);
  padding: 4px 10px; border-radius: 6px;
  margin-bottom: 16px;
}
.task__title { margin: 0 0 10px; font-size: 19px; }
.task__desc { margin: 0 0 18px; color: var(--text-2); font-size: 14.5px; }
.task__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.task__tags span {
  font-size: 11.5px; color: var(--text-2);
  padding: 4px 10px; border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}
@media (max-width: 880px) { .tasks { grid-template-columns: 1fr; } }

/* ---------- DOWNLOAD ---------- */
.download-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.dl {
  display: block;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: all .25s var(--ease);
}
.dl:hover {
  text-decoration: none;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.dl__name { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.dl__size { font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--accent); margin-bottom: 10px; }
.dl__desc { font-size: 13px; color: var(--text-2); }
.license { margin-top: 24px; color: var(--text-mute); font-size: 13px; }
.license.coming-soon { color: var(--text); font-size: 18px; }
@media (max-width: 880px) { .download-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .download-grid { grid-template-columns: 1fr; } }

/* ---------- BIBTEX ---------- */
.bibtex {
  margin: 0 0 16px;
  padding: 24px 26px;
  background: var(--bg-dark);
  color: #e6e8ec;
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.7;
  overflow-x: auto;
  border: 1px solid #23262d;
}
.bibtex code { color: inherit; }

/* ---------- FOOTER ---------- */
.footer {
  padding: 36px 0;
  background: var(--bg);
  color: var(--text-mute);
  font-size: 13px;
}
.footer__inner {
  display: flex; align-items: center; justify-content: space-between;
}
.footer__links { display: flex; gap: 18px; }
.footer__links a { color: var(--text-mute); }
.footer__links a:hover { color: var(--text); }

/* ---------- Hero entrance animation ---------- */
.hero__inner > * {
  opacity: 0;
  transform: translateY(28px);
  animation: heroIn .8s var(--ease) forwards;
}
.hero__inner > *:nth-child(1) { animation-delay: .1s; }
.hero__inner > *:nth-child(2) { animation-delay: .2s; }
.hero__inner > *:nth-child(3) { animation-delay: .35s; }
.hero__inner > *:nth-child(4) { animation-delay: .5s; }
.hero__inner > *:nth-child(5) { animation-delay: .65s; }
.hero__inner > *:nth-child(6) { animation-delay: .8s; }
@keyframes heroIn {
  to { opacity: 1; transform: none; }
}

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: all .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* Staggered children — cards reveal one by one */
.stagger > * {
  opacity: 0; transform: translateY(18px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}
.stagger.is-in > * { opacity: 1; transform: none; }
.stagger.is-in > *:nth-child(1) { transition-delay: 0ms; }
.stagger.is-in > *:nth-child(2) { transition-delay: 80ms; }
.stagger.is-in > *:nth-child(3) { transition-delay: 160ms; }
.stagger.is-in > *:nth-child(4) { transition-delay: 240ms; }
.stagger.is-in > *:nth-child(5) { transition-delay: 320ms; }

/* ---------- Utilities ---------- */
::selection { background: rgba(47,109,246,.25); }