/* ══════════════════════════════════════════════════
   About Page — KMC+LUCAS
   ══════════════════════════════════════════════════ */

:root {
  --ab-cream:  #EEECE6;
  --ab-dark:   #111111;
  --ab-red:    #C21F1F;
  --ab-ease:   cubic-bezier(0.16, 1, 0.3, 1);
  --ab-dur:    0.6s;
}

/* ─── Base ─────────────────────────────────────── */
.page-about {
  background: var(--ab-cream);
  color: var(--ab-dark);
  font-family: 'Inter', sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* ─── Nav ──────────────────────────────────────── */
.ab-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px clamp(24px, 4vw, 64px);
  mix-blend-mode: multiply;
  pointer-events: none;
}

.ab-nav__logo,
.ab-nav__menu {
  pointer-events: auto;
}

.ab-nav__logo img {
  display: block;
  height: 32px;
  width: auto;
  filter: invert(1);
  opacity: 0.85;
}

.ab-nav__menu {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
}

.ab-nav__menu img { display: block; filter: invert(1); opacity: 0.6; }

/* ─── Hero ──────────────────────────────────────── */
.ab-hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 clamp(24px, 6vw, 96px) clamp(40px, 6vh, 80px);
}

.ab-hero__title {
  margin: 0;
  font-size: clamp(5rem, 12vw, 15rem);
  font-weight: 900;
  line-height: 0.88;
  letter-spacing: -0.04em;
  color: var(--ab-dark);
}

.ab-hero__word { display: block; }

.ab-hero__sub {
  margin: clamp(24px, 3vw, 48px) 0 0;
  max-width: 520px;
  font-size: clamp(15px, 1.2vw, 18px);
  font-weight: 400;
  line-height: 1.6;
  color: rgba(17, 17, 17, 0.55);
}

/* ─── Rule ──────────────────────────────────────── */
.ab-rule {
  height: 1px;
  background: rgba(17, 17, 17, 0.12);
  margin: 0 clamp(24px, 6vw, 96px);
}

/* ─── Team section ──────────────────────────────── */
.ab-team {
  position: relative;
  padding: clamp(60px, 8vh, 120px) clamp(24px, 6vw, 96px) clamp(80px, 12vh, 160px);
}

.ab-team__intro {
  max-width: 640px;
  margin-bottom: clamp(48px, 7vw, 96px);
}

.ab-team__heading {
  font-size: clamp(11px, 0.9vw, 14px);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ab-red);
  margin: 0 0 20px;
}

.ab-team__body {
  font-size: clamp(16px, 1.3vw, 20px);
  font-weight: 400;
  line-height: 1.65;
  color: rgba(17, 17, 17, 0.7);
  margin: 0;
}

/* ─── Team grid ─────────────────────────────────── */
.ab-team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 3vw, 48px);
  align-items: start;
}

/* ─── Member card ───────────────────────────────── */
.ab-member {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.ab-member--offset {
  margin-top: clamp(40px, 5vw, 80px);
}

.ab-member__img-wrap {
  overflow: hidden;
  border-radius: 4px;
  aspect-ratio: 3 / 4;
  max-height: 550px;
}

.ab-member__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  filter: saturate(0.5);
  transform: scale(1);
  transition:
    filter var(--ab-dur) var(--ab-ease),
    transform var(--ab-dur) var(--ab-ease);
}

.ab-member:hover .ab-member__img {
  filter: saturate(1);
  transform: scale(1.03);
}

/* Isabella Sun — 照片本身色彩偏浅，提高初始饱和 */
.ab-member:nth-child(1) .ab-member__img {
  filter: saturate(0.82);
}

.ab-member__info { padding: 0 4px; }

.ab-member__name {
  font-size: clamp(18px, 1.5vw, 24px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 4px;
  color: var(--ab-dark);
}

.ab-member__cn {
  font-weight: 400;
  opacity: 0.55;
  margin-left: 4px;
}

.ab-member__role {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ab-red);
  margin: 0 0 10px;
}

.ab-member__desc {
  font-size: clamp(13px, 1vw, 15px);
  font-weight: 400;
  line-height: 1.65;
  color: rgba(17, 17, 17, 0.6);
  margin: 0;
}

/* ─── Bottom CTA ─────────────────────────────────── */
.ab-cta {
  position: absolute;
  right: clamp(24px, 6vw, 96px);
  bottom: clamp(40px, 6vh, 72px);
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--ab-dark);
}

.ab-cta__label {
  font-size: clamp(14px, 1.1vw, 17px);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.ab-cta__arrow {
  display: flex;
  align-items: center;
  overflow: hidden;
  width: 48px;
}

.ab-cta__svg {
  display: block;
  transform: translateX(0);
  transition: transform 0.5s var(--ab-ease);
}

.ab-cta:hover .ab-cta__svg {
  animation: ab-shuttle 0.55s var(--ab-ease) forwards;
}

@keyframes ab-shuttle {
  0%   { transform: translateX(0); }
  45%  { transform: translateX(14px); }
  55%  { transform: translateX(14px); }
  100% { transform: translateX(0); }
}

/* ─── Scroll reveal ──────────────────────────────── */
[data-ab-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity 0.72s var(--ab-ease),
    transform 0.72s var(--ab-ease);
}

[data-ab-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* staggered delay for team members */
.ab-member:nth-child(1)[data-ab-reveal] { transition-delay: 0s; }
.ab-member:nth-child(2)[data-ab-reveal] { transition-delay: 0.1s; }
.ab-member:nth-child(3)[data-ab-reveal] { transition-delay: 0.2s; }

/* ─── Responsive ─────────────────────────────────── */
@media (max-width: 960px) {
  .ab-team__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ab-member:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 400px;
    margin-top: 0;
  }
  .ab-member--offset { margin-top: clamp(24px, 4vw, 48px); }
}

@media (max-width: 600px) {
  .ab-hero__title { letter-spacing: -0.03em; }
  .ab-team__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .ab-member--offset  { margin-top: 0; }
  .ab-member:nth-child(3) { max-width: 100%; }
  .ab-cta { position: static; margin-top: 48px; }
}