/* About page — spine timeline (from acttrader-about.html) */

.about-spine-page {
  --ab-bg: #0a0604;
  --ab-bg-soft: #0f0a07;
  --ab-bg-card: #16100b;
  --ab-copper: #C97B4A;
  --ab-copper-pale: #F0B989;
  --ab-copper-deep: #8C5530;
  --ab-cream: #F5EEE4;
  --ab-text: #D8CBBA;
  --ab-text-dim: #9C8B79;
  --ab-text-mute: #6B5C4D;
  --ab-line: rgba(201, 123, 74, 0.12);
  --ab-line-strong: rgba(201, 123, 74, 0.26);
  --ab-grad-text: linear-gradient(135deg, #F0B989 0%, #D98B57 55%, #8C5530 100%);
  --ab-spine-x: 72px;
  --ab-ease: cubic-bezier(0.22, 1, 0.36, 1);
  background: var(--ab-bg);
  color: var(--ab-text);
  overflow-x: hidden;
}

.about-spine-page::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  opacity: 0.04;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 240 240' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.about-spine-page main {
  position: relative;
  z-index: 3;
}

/* spine */
.about-spine-page #spine {
  position: fixed;
  top: 0;
  bottom: 0;
  left: var(--ab-spine-x);
  width: 1px;
  background: var(--ab-line);
  z-index: 5;
  pointer-events: none;
}
.about-spine-page #spine .progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--ab-copper-deep), var(--ab-copper));
  height: 0;
}
.about-spine-page #spine .pulse {
  position: absolute;
  left: -3.5px;
  top: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ab-copper-pale);
  box-shadow: 0 0 14px rgba(201, 123, 74, 0.8), 0 0 40px rgba(201, 123, 74, 0.4);
}

.about-spine-page .col {
  padding-left: calc(var(--ab-spine-x) + 56px);
  padding-right: 64px;
  max-width: 1320px;
  margin: 0 auto;
  position: relative;
  z-index: 3;
}

.about-spine-page .kicker {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--ab-copper);
  display: flex;
  align-items: center;
  gap: 16px;
}
.about-spine-page .kicker::before {
  content: '';
  width: 36px;
  height: 1px;
  background: var(--ab-copper);
}

.about-spine-page .sheen {
  background: linear-gradient(110deg, #8C5530 18%, #F0B989 42%, #E89A5F 50%, #8C5530 78%);
  background-size: 240% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: ab-sheen 6.5s linear infinite;
}
@keyframes ab-sheen {
  0% { background-position: 120% 0; }
  100% { background-position: -120% 0; }
}

/* hero */
.about-spine-page .ab-hero {
  min-height: 92vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  padding: 130px 0 60px;
  overflow: hidden;
}
.about-spine-page .hero-mark {
  position: absolute;
  top: 60px;
  right: -50px;
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(200px, 30vw, 400px);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 123, 74, 0.13);
  pointer-events: none;
  user-select: none;
  z-index: 1;
}
.about-spine-page .ab-hero .kicker { margin-bottom: 44px; }
.about-spine-page .top-grid {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 60px;
  align-items: end;
  position: relative;
  z-index: 3;
}
.about-spine-page .ab-hero h1 {
  font-size: clamp(42px, 7vw, 104px);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1;
  color: var(--ab-cream);
}
.about-spine-page .ab-hero h1 .ital {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
  background: var(--ab-grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.about-spine-page .meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ab-text-mute);
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--ab-line-strong);
}
.about-spine-page .meta span {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 11px 2px;
  border-bottom: 1px solid var(--ab-line);
}
.about-spine-page .meta b {
  color: var(--ab-copper-pale);
  font-weight: 500;
}
.about-spine-page .sub-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  margin-top: 54px;
  align-items: start;
  position: relative;
  z-index: 3;
}
.about-spine-page .sub {
  font-size: 16.5px;
  color: var(--ab-text-dim);
  line-height: 1.7;
  max-width: 52ch;
}
.about-spine-page .sub b {
  color: var(--ab-text);
  font-weight: 600;
}
.about-spine-page .vol-line {
  display: flex;
  align-items: baseline;
  gap: 18px;
  justify-self: end;
  align-self: end;
  flex-wrap: wrap;
}
.about-spine-page .vol-line .v {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(56px, 7vw, 104px);
  line-height: 0.9;
}
.about-spine-page .vol-line .l {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  max-width: 14ch;
  line-height: 1.7;
}
.about-spine-page .scroll-cue {
  position: absolute;
  bottom: 34px;
  left: calc(var(--ab-spine-x) + 56px);
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
  text-decoration: none;
}
.about-spine-page .scroll-cue::after {
  content: '';
  width: 1px;
  height: 32px;
  background: linear-gradient(var(--ab-copper), transparent);
  animation: ab-cue 2s ease-in-out infinite;
}
@keyframes ab-cue {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* timeline */
.about-spine-page .tl-head {
  padding: 120px 0 70px;
}
.about-spine-page .tl-head h2 {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.03;
  color: var(--ab-cream);
  max-width: 18ch;
  margin-top: 26px;
}
.about-spine-page .tl-head h2 .serif {
  color: var(--ab-copper-pale);
  font-weight: 400;
}
.about-spine-page .tl-head p {
  font-size: 16px;
  color: var(--ab-text-dim);
  max-width: 54ch;
  line-height: 1.75;
  margin-top: 20px;
}

.about-spine-page .station {
  position: relative;
  padding: 90px 0 80px;
  overflow: hidden;
}
.about-spine-page .station + .station,
.about-spine-page .station + .minors,
.about-spine-page .minors + .station {
  border-top: 1px solid rgba(201, 123, 74, 0.06);
}
.about-spine-page .st-year-bg {
  position: absolute;
  top: 20px;
  right: -40px;
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(160px, 22vw, 300px);
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 123, 74, 0.14);
  pointer-events: none;
  z-index: 1;
}
.about-spine-page .st-in { position: relative; z-index: 3; }
.about-spine-page .st-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.about-spine-page .st-yr {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 40px;
  color: var(--ab-copper-pale);
  line-height: 1;
}
.about-spine-page .st-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  border: 1px solid var(--ab-line);
  padding: 5px 11px;
  border-radius: 2px;
}
.about-spine-page .st-vol {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ab-copper);
  margin-left: auto;
}
.about-spine-page .st-vol b {
  color: var(--ab-copper-pale);
  font-weight: 500;
  font-size: 13px;
}
.about-spine-page .station h3 {
  font-size: clamp(28px, 4.2vw, 54px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.04;
  color: var(--ab-cream);
  max-width: 18ch;
  margin-bottom: 18px;
}
.about-spine-page .station h3 .serif {
  color: var(--ab-copper-pale);
  font-weight: 400;
}
.about-spine-page .st-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 54px;
  align-items: start;
}
.about-spine-page .st-body p {
  font-size: 15.5px;
  color: var(--ab-text-dim);
  line-height: 1.75;
  max-width: 48ch;
  margin-bottom: 14px;
}
.about-spine-page .st-body p b {
  color: var(--ab-text);
  font-weight: 600;
}
.about-spine-page .st-facts {
  border-top: 1px solid var(--ab-line-strong);
}
.about-spine-page .st-fact {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 2px;
  border-bottom: 1px solid var(--ab-line);
  font-size: 13.5px;
}
.about-spine-page .st-fact .k { color: var(--ab-text-dim); }
.about-spine-page .st-fact .v {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ab-copper-pale);
  text-transform: uppercase;
  text-align: right;
}

/* minor years */
.about-spine-page .minors {
  padding: 30px 0;
}
.about-spine-page .mrow {
  display: grid;
  grid-template-columns: 92px 1fr 1.5fr auto;
  gap: 26px;
  align-items: baseline;
  padding: 18px 2px;
  border-bottom: 1px solid var(--ab-line);
  transition: all 0.3s var(--ab-ease);
}
.about-spine-page .mrow:hover {
  padding-left: 14px;
  background: rgba(201, 123, 74, 0.025);
}
.about-spine-page .mrow .yr {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 23px;
  color: var(--ab-text-dim);
}
.about-spine-page .mrow:hover .yr { color: var(--ab-copper-pale); }
.about-spine-page .mrow .t {
  font-size: 15px;
  font-weight: 600;
  color: var(--ab-cream);
}
.about-spine-page .mrow .d {
  font-size: 13.5px;
  color: var(--ab-text-dim);
  line-height: 1.55;
}
.about-spine-page .mrow .vol {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ab-copper);
  white-space: nowrap;
}
.about-spine-page .mrow .vol b {
  color: var(--ab-copper-pale);
  font-weight: 500;
  font-size: 12px;
}

.about-spine-page .minors-toggle {
  display: none;
}

/* manifesto */
.about-spine-page .manif {
  padding: 180px 0;
  border-top: 1px solid var(--ab-line);
  text-align: left;
}
.about-spine-page .manif blockquote {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(30px, 5vw, 64px);
  line-height: 1.18;
  color: var(--ab-cream);
  max-width: 22ch;
}
.about-spine-page .manif blockquote b {
  font-weight: 400;
  background: var(--ab-grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.about-spine-page .manif cite {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-style: normal;
  font-size: 10.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  margin-top: 36px;
}

/* reasons */
.about-spine-page .reasons {
  padding: 140px 0 130px;
  border-top: 1px solid var(--ab-line);
  background: var(--ab-bg-soft);
}
.about-spine-page .reasons h2 {
  font-size: clamp(30px, 4.6vw, 58px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--ab-cream);
  max-width: 18ch;
  margin-top: 26px;
  margin-bottom: 18px;
}
.about-spine-page .reasons h2 .serif {
  color: var(--ab-copper-pale);
  font-weight: 400;
}
.about-spine-page .reasons .lede {
  font-size: 16px;
  color: var(--ab-text-dim);
  max-width: 54ch;
  line-height: 1.75;
  margin-bottom: 58px;
}
.about-spine-page .ledger {
  border-top: 1px solid var(--ab-line-strong);
}
.about-spine-page .lrow {
  display: grid;
  grid-template-columns: 60px 1fr 1.6fr auto;
  gap: 26px;
  align-items: baseline;
  padding: 20px 2px;
  border-bottom: 1px solid var(--ab-line);
  transition: all 0.3s var(--ab-ease);
}
.about-spine-page .lrow:hover {
  padding-left: 16px;
  background: rgba(201, 123, 74, 0.025);
}
.about-spine-page .lrow .idx {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ab-text-mute);
  letter-spacing: 0.1em;
}
.about-spine-page .lrow .nm {
  font-size: 16.5px;
  font-weight: 600;
  color: var(--ab-cream);
}
.about-spine-page .lrow .ds {
  font-size: 13.5px;
  color: var(--ab-text-dim);
  line-height: 1.55;
}
.about-spine-page .lrow .ds b {
  color: var(--ab-copper-pale);
  font-weight: 600;
}
.about-spine-page .lrow .tg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ab-copper);
}

/* close */
.about-spine-page .ab-close {
  padding: 170px 0 130px;
  border-top: 1px solid var(--ab-line);
}
.about-spine-page .ab-close .line {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: clamp(44px, 8.4vw, 124px);
  line-height: 0.98;
  color: var(--ab-cream);
  max-width: 11ch;
  margin: 40px 0 24px;
}
.about-spine-page .ab-close .line b {
  font-weight: 400;
  background: var(--ab-grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.about-spine-page .ab-close .support {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  margin-bottom: 46px;
}
.about-spine-page .ab-close .row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.about-spine-page .ab-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 30px;
  border-radius: 2px;
  background: var(--ab-cream);
  color: var(--ab-bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 0.3s var(--ab-ease);
  text-decoration: none;
}
.about-spine-page .ab-btn:hover {
  background: var(--ab-copper-pale);
  transform: translateY(-2px);
}
.about-spine-page .ab-btn.ghost {
  background: transparent;
  color: var(--ab-cream);
  border: 1px solid var(--ab-line-strong);
}
.about-spine-page .ab-btn.ghost:hover {
  border-color: var(--ab-copper);
  color: var(--ab-copper-pale);
  background: transparent;
}
.about-spine-page .ab-close .micro {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ab-text-mute);
  margin-top: 54px;
}

/* reveal */
.about-spine-page .rv {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s var(--ab-ease), transform 0.9s var(--ab-ease);
}
.about-spine-page .rv.in {
  opacity: 1;
  transform: none;
}

/* ---- mobile ---- */
@media (max-width: 1500px) {
  .about-spine-page .col { margin: 0; }
}

@media (max-width: 880px) {
  .about-spine-page { --ab-spine-x: 26px; }
  .about-spine-page .col {
    padding-left: calc(var(--ab-spine-x) + 26px);
    padding-right: 24px;
  }
  .about-spine-page .ab-hero {
    min-height: 0;
    padding: 110px 0 90px;
  }
  .about-spine-page .top-grid,
  .about-spine-page .sub-row,
  .about-spine-page .st-body {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .about-spine-page .vol-line {
    justify-self: start;
  }
  .about-spine-page .vol-line .v {
    font-size: 64px;
  }
  .about-spine-page .scroll-cue {
    left: calc(var(--ab-spine-x) + 26px);
  }
  .about-spine-page .station {
    padding: 56px 0 50px;
  }
  .about-spine-page .tl-head {
    padding: 80px 0 40px;
  }
  .about-spine-page .manif {
    padding: 100px 0;
  }
  .about-spine-page .reasons {
    padding: 90px 0 80px;
  }
  .about-spine-page .ab-close {
    padding: 100px 0 80px;
  }
  .about-spine-page .st-facts {
    display: none;
  }
  .about-spine-page .minors {
    padding: 6px 0;
  }
  .about-spine-page .minors .mrow {
    display: none;
  }
  .about-spine-page .minors.open .mrow {
    display: grid;
  }
  .about-spine-page .minors-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    padding: 16px 2px;
    border-bottom: 1px solid var(--ab-line);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ab-text-mute);
    text-align: left;
  }
  .about-spine-page .minors-toggle b {
    color: var(--ab-copper-pale);
    font-weight: 500;
  }
  .about-spine-page .minors-toggle .pm {
    margin-left: auto;
    color: var(--ab-copper);
    font-size: 14px;
    line-height: 1;
    transition: transform 0.3s var(--ab-ease);
  }
  .about-spine-page .minors.open .minors-toggle .pm {
    transform: rotate(45deg);
  }
}

@media (max-width: 820px) {
  .about-spine-page .mrow {
    grid-template-columns: 64px 1fr;
    gap: 6px 18px;
  }
  .about-spine-page .mrow .d,
  .about-spine-page .mrow .vol {
    grid-column: 2;
  }
  .about-spine-page .lrow {
    grid-template-columns: 44px 1fr;
    gap: 8px 18px;
    padding: 18px 4px;
  }
  .about-spine-page .lrow .ds,
  .about-spine-page .lrow .tg {
    grid-column: 2;
  }
  .about-spine-page .lrow .nm {
    grid-column: 2;
    font-size: 15.5px;
  }
}

@media (max-width: 540px) {
  .about-spine-page .col {
    padding-left: calc(var(--ab-spine-x) + 16px);
    padding-right: 16px;
  }
  .about-spine-page .ab-hero h1 {
    font-size: clamp(34px, 10vw, 48px);
  }
  .about-spine-page .meta span {
    font-size: 10px;
    gap: 12px;
  }
  .about-spine-page .ab-close .row {
    flex-direction: column;
    align-items: stretch;
  }
  .about-spine-page .ab-btn {
    justify-content: center;
    width: 100%;
  }
  .about-spine-page .manif blockquote {
    max-width: none;
    font-size: clamp(26px, 7vw, 40px);
  }
  .about-spine-page .hero-mark {
    right: -20px;
    font-size: clamp(120px, 36vw, 200px);
  }
}

@media (max-width: 480px) {
  .about-spine-page #spine {
    display: none;
  }
  .about-spine-page .col {
    padding-left: 18px;
    padding-right: 18px;
  }
  .about-spine-page .scroll-cue {
    left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .about-spine-page .sheen { animation: none; }
  .about-spine-page .scroll-cue::after { animation: none; }
  .about-spine-page .rv {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* RTL */
.about-spine-page.is-rtl #spine {
  left: auto;
  right: var(--ab-spine-x);
}
.about-spine-page.is-rtl .col {
  padding-left: 64px;
  padding-right: calc(var(--ab-spine-x) + 56px);
}
@media (max-width: 880px) {
  .about-spine-page.is-rtl .col {
    padding-left: 24px;
    padding-right: calc(var(--ab-spine-x) + 26px);
  }
}