/* =============================================================
   About

   Built from the design mockup: a full-bleed hero, then alternating
   bands of copy and artwork over the same dark ground the board
   uses. Loaded after home.css, whose tokens (--l-blue, --l-muted,
   --l-edge, --l-ease) this file reuses rather than restating.
   ============================================================= */

.about {
  --ab-max: 1600px;
  --ab-deep: #070B16;
}

.ab-wrap {
  width: 100%;
  max-width: var(--ab-max);
  margin: 0 auto;
  padding: 0 var(--l-gutter);
}
.ab-narrow { max-width: 900px; }

.ab-sec {
  position: relative;
  isolation: isolate;
  padding: clamp(64px, 8vw, 104px) 0;
  border-top: 1px solid rgba(255, 255, 255, .05);
}

/* --- shared bits ----------------------------------------------------------- */

/* A rule, then a tracked label. Marks the start of every band. */
.about .ab-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--l-muted);
}
.ab-rule { width: 24px; height: 1px; background: var(--l-blue); }

.about h2 {
  margin: 0 0 24px;
  font-size: clamp(28px, 3.4vw, 46px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  color: #FFFFFF;
}
.about .ab-lede {
  margin: 0 0 18px;
  font-size: 17px;
  line-height: 1.7;
  color: var(--l-muted);
}
.about .ab-lede:last-child { margin-bottom: 0; }

.ab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  transition: background .18s var(--l-ease), border-color .18s var(--l-ease);
}
.ab-btn svg { width: 16px; height: 16px; transition: transform .18s var(--l-ease); }
.ab-btn:hover svg { transform: translateX(3px); }
.ab-btn-primary { background: var(--l-blue); color: #FFFFFF; }
.ab-btn-primary:hover { background: #1D4ED8; color: #FFFFFF; }
.ab-btn-ghost { border-color: rgba(255,255,255,.2); color: #FFFFFF; }
.ab-btn-ghost:hover { border-color: rgba(255,255,255,.4); background: rgba(255,255,255,.05); color: #FFFFFF; }

/* Frosted surface, used for the framed art and the ecosystem cards. */
.ab-glass {
  background: rgba(10, 15, 29, .6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, .08);
}

/* --- hero ------------------------------------------------------------------ */

.ab-hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  min-height: min(78vh, 660px);
  padding: clamp(56px, 7vw, 88px) 0;
}
/* The art sits to the right and dissolves at both ends, so the copy has a
   solid ground on the left without a hard seam down the middle. */
.ab-hero-art {
  position: absolute;
  inset: 0;
  z-index: -1;
  -webkit-mask-image: linear-gradient(180deg, #000 58%, transparent 100%);
  mask-image: linear-gradient(180deg, #000 58%, transparent 100%);
}
.ab-hero-art img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% 50%;
  opacity: .6;
}
.ab-hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--l-bg) 0%, rgba(8,10,15,.8) 45%, rgba(8,10,15,0) 100%),
    linear-gradient(0deg, var(--l-bg) 0%, rgba(8,10,15,0) 55%);
}
.ab-hero-inner { position: relative; }
.ab-hero-copy { max-width: 620px; }
.ab-hero-copy h1 {
  margin: 0 0 24px;
  font-size: clamp(38px, 5.4vw, 68px);
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.08;
  color: #FFFFFF;
}
.ab-hero-copy p {
  max-width: 30em;
  margin: 0 0 38px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--l-muted);
}
.ab-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* --- why this exists ------------------------------------------------------- */

.ab-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(40px, 5vw, 64px);
  align-items: center;
}
@media (min-width: 1024px) { .ab-split { grid-template-columns: 1fr 1fr; } }

/* A wash of blue behind the copy, so the band is not flat black. */
.ab-glow {
  position: absolute;
  top: 0; left: 18%;
  width: min(800px, 60vw); height: 400px;
  z-index: -1;
  border-radius: 50%;
  background: rgba(37, 99, 235, .07);
  filter: blur(120px);
  pointer-events: none;
}

.ab-frame {
  position: relative;
  padding: 8px;
  border-radius: 14px;
  background: rgba(10, 15, 29, .6);
  border: 1px solid rgba(255, 255, 255, .08);
}
.ab-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 14px;
  background: linear-gradient(to top right, rgba(37,99,235,.12), transparent 60%);
  pointer-events: none;
}
.ab-frame img { display: block; width: 100%; height: auto; border-radius: 9px; }

/* --- principles ------------------------------------------------------------ */

.ab-cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(32px, 4vw, 48px);
}
@media (min-width: 820px) { .ab-cols { grid-template-columns: repeat(3, 1fr); } }

.ab-mark {
  display: grid;
  place-items: center;
  width: 56px; height: 56px;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 50%;
  background: rgba(10, 15, 29, .6);
  color: #FFFFFF;
  transition: background .18s var(--l-ease);
}
.ab-mark svg { width: 24px; height: 24px; }
.ab-cols > div:hover .ab-mark { background: rgba(37, 99, 235, .2); }

.ab-cols h3 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 600;
  color: #FFFFFF;
}
.ab-cols p { margin: 0; font-size: 14px; line-height: 1.7; color: var(--l-muted); }

/* --- how it works and the ecosystem ---------------------------------------- */

.ab-deep { background: var(--ab-deep); }
/* A single lit line down the band, from the design. */
.ab-ray {
  position: absolute;
  top: 0; right: 26%;
  width: 1px; height: 100%;
  z-index: -1;
  background: linear-gradient(180deg, transparent, rgba(37,99,235,.2), transparent);
  pointer-events: none;
}

.ab-wide {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(56px, 6vw, 80px);
}
@media (min-width: 1280px) { .ab-wide { grid-template-columns: 1fr 1fr; } }

.ab-steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px 24px;
  margin: 0 0 clamp(40px, 5vw, 64px);
  padding: 0;
  list-style: none;
}
@media (min-width: 1024px) { .ab-steps { grid-template-columns: repeat(4, 1fr); } }
/* The line threads the numbers together, behind them. */
@media (min-width: 1024px) {
  .ab-steps::before {
    content: "";
    position: absolute;
    top: 24px; left: 0; right: 0;
    height: 1px;
    background: rgba(255, 255, 255, .1);
  }
}
.ab-steps li { position: relative; }
.ab-step-n {
  display: grid;
  place-items: center;
  width: 48px; height: 48px;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 50%;
  background: var(--ab-deep);
  font-size: 14px;
  font-weight: 500;
  color: #FFFFFF;
}
.ab-steps h4 { margin: 0 0 8px; font-size: 14px; font-weight: 500; color: #FFFFFF; }
.ab-steps p { margin: 0; font-size: 12.5px; line-height: 1.7; color: var(--l-muted); }

.ab-band {
  height: 260px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 14px;
}
.ab-band img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s var(--l-ease);
}
.ab-band:hover img { transform: scale(1.05); }

.ab-eco-h { font-size: clamp(24px, 2.6vw, 32px); margin-bottom: 16px; }
.about .ab-eco-p {
  max-width: 46ch;
  margin: 0 0 44px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--l-muted);
}

.ab-cards { display: grid; gap: 16px; }
.ab-card {
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 14px;
  background: rgba(10, 15, 29, .6);
  transition: border-color .18s var(--l-ease);
}
.ab-card:hover { border-color: rgba(255, 255, 255, .2); }
@media (min-width: 560px) { .ab-card { grid-template-columns: 1fr 1fr; } }

.ab-card-art { overflow: hidden; min-height: 168px; }
.ab-card-art img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .7s var(--l-ease);
}
.ab-card:hover .ab-card-art img { transform: scale(1.05); }

.ab-card-body {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 24px;
  border-top: 1px solid rgba(255, 255, 255, .1);
}
@media (min-width: 560px) {
  .ab-card-body { border-top: 0; border-left: 1px solid rgba(255, 255, 255, .1); }
}
/* The blue tick that marks each card's text side. */
.ab-card-body::before {
  content: "";
  position: absolute;
  left: 0; top: 24px;
  width: 2px; height: 16px;
  border-radius: 0 2px 2px 0;
  background: var(--l-blue);
}
.ab-card-body h3 { margin: 0 0 8px; font-size: 16px; font-weight: 600; color: #FFFFFF; }
.ab-card-body p { margin: 0 0 16px; font-size: 12.5px; line-height: 1.7; color: var(--l-muted); }
.ab-card-body a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--l-muted);
  transition: color .18s var(--l-ease);
}
.ab-card-body a svg { width: 14px; height: 14px; transition: transform .18s var(--l-ease); }
.ab-card:hover .ab-card-body a { color: #FFFFFF; }
.ab-card-body a:hover svg { transform: translateX(3px); }

/* Alternating sides: art right, text left. */
@media (min-width: 560px) {
  .ab-card-flip .ab-card-art { order: 2; }
  .ab-card-flip .ab-card-body {
    order: 1;
    border-left: 0;
    border-right: 1px solid rgba(255, 255, 255, .1);
  }
}

/* --- closing --------------------------------------------------------------- */

.ab-close { overflow: hidden; }
.ab-close-glow {
  position: absolute;
  bottom: -60px; left: 50%;
  width: min(900px, 90vw); height: 220px;
  z-index: -1;
  transform: translateX(-50%);
  border-radius: 50%;
  background: rgba(37, 99, 235, .12);
  filter: blur(80px);
  pointer-events: none;
}
.ab-close-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 32px;
  align-items: flex-end;
  justify-content: space-between;
}
.ab-close-inner > div:first-child { max-width: 620px; }
.ab-close-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* --- fan project ----------------------------------------------------------- */

.about .ab-note {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 9px 16px;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 999px;
  background: rgba(255, 255, 255, .04);
  font-size: 12.5px;
  color: var(--l-muted);
}
.ab-note svg { width: 15px; height: 15px; }
.about .ab-fine { margin: 0; font-size: 12px; line-height: 1.8; color: #64748B; }

/* --- reveal on scroll ------------------------------------------------------ */

/* Set by script, so the page still reads with JavaScript off. */
.about .ab-rise.is-armed {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .8s var(--l-ease), transform .8s var(--l-ease);
  transition-delay: var(--delay, 0ms);
}
.about .ab-rise.is-armed.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .about .ab-rise.is-armed { opacity: 1; transform: none; transition: none; }
  .ab-band img, .ab-card-art img, .ab-btn svg, .ab-card-body a svg { transition: none; }
  .ab-band:hover img, .ab-card:hover .ab-card-art img { transform: none; }
}