.about {
  min-height: 100vh;
  background: #F6F7F9;
  color: var(--text);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.about__inner {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  padding: clamp(2.5rem, 6vw, 5rem) clamp(2rem, 8vw, 6.25rem);
}

.about__nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  animation: fadeSlideUp 0.4s 0.1s both cubic-bezier(0.23, 1, 0.32, 1);
}

.about__brand,
.about__nav-links {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.about__brand,
.about__back,
.about__manage,
.about__analytics {
  text-decoration: none;
}

.about__brand-name {
  color: var(--brand-ink);
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  line-height: 1;
}

.about__brand-meta {
  margin-left: 0.25rem;
  color: var(--text-faint);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.about__back,
.about__manage,
.about__analytics {
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
}

.about__back {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: #fff;
  padding: 0.65rem 0.8rem;
  letter-spacing: 0.04em;
  box-shadow: 0 2px 0 rgba(10, 18, 32, 0.06);
}

.about__manage {
  color: var(--text-faint);
}

.about__analytics {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--accent-soft, #F2F6FF);
  padding: 0.65rem 0.8rem;
  color: var(--accent-deep);
  letter-spacing: 0.04em;
}

.about__back:hover,
.about__manage:hover {
  color: var(--accent-deep);
}

.about__back:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--border));
  background: var(--accent-soft, #F2F6FF);
  text-decoration: none;
}

.about__hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(20rem, 0.72fr);
  align-items: end;
  gap: clamp(2rem, 5vw, 4.5rem);
  margin-bottom: clamp(3rem, 8vh, 5rem);
  padding: clamp(2rem, 5vw, 4.5rem) 0 clamp(1rem, 3vw, 2rem);
  background:
    radial-gradient(circle at 92% 18%, rgba(27, 107, 255, 0.12), transparent 28rem);
  animation: fadeSlideUp 0.55s 0.25s both cubic-bezier(0.23, 1, 0.32, 1);
}

.about__hero::after {
  content: "";
  position: absolute;
  right: 14%;
  bottom: -1.5rem;
  width: min(32rem, 48vw);
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(var(--accent-rgb), 0.28), transparent);
}

.about__hero-copy {
  width: min(45rem, 100%);
}

.about__eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.about__slogan {
  max-width: 14em;
  color: var(--text);
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 7.2rem);
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.05;
}

.about__slogan span {
  color: var(--accent);
}

.about__intro {
  width: min(38rem, 100%);
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 1.55vw, 1.2rem);
  font-weight: 700;
  line-height: 1.8;
}

.about__quote {
  margin-left: 0;
  padding-left: 1rem;
  border-left: 2px solid var(--accent);
  font-style: italic;
}

.about__quote cite {
  display: block;
  margin-top: 0.75rem;
  color: var(--text-faint);
  font-family: var(--font-sans);
  font-size: 0.68rem;
  font-style: normal;
  line-height: 1.5;
}

.about__scene {
  position: relative;
  align-self: stretch;
  min-height: clamp(22rem, 42vw, 34rem);
}

.about__scene-image {
  position: absolute;
  inset: 0;
  overflow: hidden;
  border: 1px solid rgba(17, 20, 24, 0.08);
  border-radius: 8px;
  background:
    linear-gradient(135deg, #0E1117 0%, #202833 54%, #111418 100%);
  box-shadow: 0 24px 70px rgba(17, 20, 24, 0.16);
}

.about__scene-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  filter: saturate(0.86) contrast(0.94) brightness(0.82);
  object-fit: cover;
  transform: scale(1.02);
}

.about__scene-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 8, 13, 0.06), rgba(5, 8, 13, 0.5)),
    linear-gradient(90deg, rgba(5, 8, 13, 0.12), rgba(5, 8, 13, 0.02) 48%, rgba(5, 8, 13, 0.36));
}

.about__hero-note {
  position: absolute;
  right: clamp(1rem, 2.5vw, 1.5rem);
  bottom: clamp(1rem, 2.5vw, 1.5rem);
  width: min(18rem, calc(100% - 2rem));
  border-left: 1px solid rgba(255, 255, 255, 0.38);
  padding-left: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

.about__hero-note span,
.about__hero-note strong {
  display: block;
}

.about__hero-note span {
  margin-bottom: 0.7rem;
  color: #B8D0FF;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1;
}

.about__hero-note strong {
  font-family: var(--font-serif);
  font-size: 0.98rem;
  line-height: 1.75;
}

.about__status,
.about__notice {
  width: min(42rem, 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.about__notice h1,
.about__notice h2 {
  margin-bottom: 0.6rem;
  color: var(--brand-ink);
}

.about__notice p,
.about__status {
  margin: 0;
  color: var(--text-muted);
}

.member-explorer {
  flex: 1;
}

.member-codes {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.25rem);
  margin-bottom: clamp(2.25rem, 5vh, 3.75rem);
}

.member-code {
  position: relative;
  padding: 0;
  color: var(--border-strong);
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.5vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1;
  text-transform: uppercase;
  transition: color 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  animation: fadeSlideUp 0.5s var(--member-delay) both cubic-bezier(0.23, 1, 0.32, 1);
}

.member-code::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -0.25rem;
  left: 0;
  height: 3px;
  border-radius: 999px;
  background: var(--member-color);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.member-code:hover,
.member-code:focus-visible {
  color: var(--text);
}

.member-code:focus-visible,
.member-card__close:focus-visible {
  outline: 3px solid rgba(var(--accent-rgb), 0.22);
  outline-offset: 6px;
  border-radius: 6px;
}

.member-code.is-active {
  color: var(--member-color);
}

.member-code.is-active::after {
  transform: scaleX(1);
  animation: lineGrow 0.3s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.member-separator {
  color: var(--border);
  font-family: var(--font-sans);
  font-size: clamp(1.8rem, 3.5vw, 3.2rem);
  font-weight: 300;
  line-height: 1;
  user-select: none;
  animation: fadeSlideUp 0.5s var(--member-delay) both cubic-bezier(0.23, 1, 0.32, 1);
}

.member-detail {
  min-height: 16rem;
}

.member-hint {
  margin: 1.5rem 0 0;
  color: var(--text-faint);
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-style: italic;
  line-height: 1.8;
  animation: fadeSlideUp 0.5s 0.85s both cubic-bezier(0.23, 1, 0.32, 1);
}

.member-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(12rem, 1fr) minmax(16rem, 1.4fr);
  gap: 0 2.5rem;
  width: min(56.25rem, 100%);
  margin: 0 auto;
  border: 1px solid color-mix(in srgb, var(--member-color) 10%, transparent);
  border-top: 3px solid var(--member-color);
  border-radius: 16px;
  background: #fff;
  padding: 2rem 2.25rem;
  box-shadow: 0 12px 40px color-mix(in srgb, var(--member-color) 8%, transparent);
  animation: fadeSlideDown 0.38s cubic-bezier(0.23, 1, 0.32, 1) both;
}

.member-card:focus {
  outline: none;
}

.member-card__close {
  position: absolute;
  top: 1.125rem;
  right: 1.125rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.875rem;
  height: 1.875rem;
  border-radius: 6px;
  color: var(--text-faint);
  font-size: 1.125rem;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}

.member-card__close:hover {
  background: var(--bg-soft);
  color: var(--text-muted);
}

.member-card__avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  margin-bottom: 1rem;
  border: 2px solid color-mix(in srgb, var(--member-color) 20%, transparent);
  border-radius: 50%;
  background: var(--member-bg);
  color: var(--member-color);
  font-family: var(--font-display);
  font-size: 1.5rem;
  line-height: 1;
}

.member-card__name {
  color: var(--text);
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1;
}

.member-card__code {
  margin: 0.25rem 0 0.875rem;
  color: var(--member-color);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.member-card__interests {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1.25rem;
}

.member-card__interests span {
  border: 1px solid color-mix(in srgb, var(--member-color) 20%, transparent);
  border-radius: 999px;
  background: var(--member-bg);
  color: var(--member-color);
  padding: 0.18rem 0.62rem;
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.35;
}

.member-card__bio {
  margin: 0;
  color: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-style: italic;
  line-height: 1.8;
  word-break: keep-all;
  overflow-wrap: break-word;
}

.member-card__section-title {
  margin-bottom: 0.875rem;
  color: var(--text-faint);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1;
  text-transform: uppercase;
}

.member-career,
.member-lessons__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.member-career li {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.member-career__place {
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.3;
}

.member-career__period {
  color: var(--text-faint);
  font-size: 0.68rem;
  font-weight: 500;
  line-height: 1.3;
}

.member-lessons__list {
  gap: 0.5rem;
}

.member-lessons__list a {
  position: relative;
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-sidebar);
  padding: 0.5rem 4rem 0.5rem 0.75rem;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.member-lessons__list a:hover {
  border-color: color-mix(in srgb, var(--member-color) 28%, var(--border));
  background: #fff;
  transform: translateX(4px);
}

.member-lessons__meta,
.member-lessons__name,
.member-lessons__missing {
  display: block;
}

.member-lessons__meta {
  margin-bottom: 0.125rem;
  color: var(--text-faint);
  font-size: 0.62rem;
  font-weight: 600;
  line-height: 1.35;
}

.member-lessons__name {
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 700;
  line-height: 1.35;
}

.member-lessons__type {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  border-radius: 999px;
  background: var(--work-bg);
  color: var(--work-color);
  padding: 0.16rem 0.45rem;
  font-size: 0.62rem;
  font-weight: 800;
  line-height: 1.2;
}

.member-lessons__missing {
  margin-top: 0.18rem;
  color: #b45309;
  font-size: 0.68rem;
  font-weight: 800;
}

.member-card__empty {
  margin: 0;
  color: var(--border-strong);
  font-size: 0.82rem;
}

.about__footer {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: auto;
  padding-top: 3.75rem;
  animation: fadeSlideUp 0.5s 1s both cubic-bezier(0.23, 1, 0.32, 1);
}

.about__footer-line {
  height: 1px;
  flex: 1;
  background: var(--border);
}

.about__footer-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem 1rem;
}

.about__footer-meta > span {
  color: var(--border-strong);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
}

.about__contact {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid rgba(var(--accent-rgb), 0.16);
  border-radius: 999px;
  background: rgba(var(--accent-rgb), 0.045);
  color: var(--brand-ink);
  padding: 0.45rem 0.72rem;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.about__contact:hover {
  border-color: rgba(var(--accent-rgb), 0.35);
  background: #fff;
  color: var(--accent-deep);
  transform: translateY(-1px);
}

.about__contact:focus-visible {
  outline: 3px solid rgba(var(--accent-rgb), 0.22);
  outline-offset: 3px;
}

.about__contact-label {
  color: var(--accent);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.about__contact-email {
  color: currentColor;
  letter-spacing: 0;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeSlideDown {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes lineGrow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .about__nav,
  .about__hero,
  .member-code,
  .member-separator,
  .member-hint,
  .member-card,
  .about__footer {
    animation: none;
  }

  .member-code,
  .member-code::after,
  .member-card__close,
  .member-lessons__list a {
    transition: none;
  }
}

@media (max-width: 1080px) {
  .about__hero {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 940px) {
  .member-card {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
    row-gap: 2rem;
  }

  .member-lessons {
    grid-column: 1 / -1;
  }
}

@media (max-width: 760px) {
  .about__inner {
    padding: 2.5rem 1.5rem;
  }

  .about__nav,
  .about__nav-links {
    align-items: flex-start;
    flex-direction: column;
  }

  .about__nav {
    margin-bottom: 2rem;
  }

  .about__hero {
    padding: 1.25rem 0 0;
    margin-bottom: 3rem;
  }

  .about__scene {
    min-height: 18rem;
  }

  .about__slogan {
    font-size: clamp(2.75rem, 15vw, 4.8rem);
  }

  .about__intro {
    font-size: 0.98rem;
  }

  .about__hero-note {
    right: 1rem;
    bottom: 1rem;
    width: min(16rem, calc(100% - 2rem));
    padding-left: 1rem;
  }

  .member-codes {
    gap: 1rem 1.25rem;
    margin-bottom: 2rem;
  }

  .member-code {
    font-size: clamp(2.35rem, 15vw, 4.2rem);
  }

  .member-separator {
    font-size: clamp(1.45rem, 9vw, 2.4rem);
  }

  .member-card {
    grid-template-columns: 1fr;
    gap: 1.75rem;
    padding: 1.5rem;
  }

  .member-card__close {
    top: 0.875rem;
    right: 0.875rem;
  }

  .member-lessons__list a {
    padding-right: 0.75rem;
  }

  .member-lessons__type {
    position: static;
    display: inline-flex;
    margin-top: 0.45rem;
  }

  .about__footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .about__footer-line {
    width: 100%;
    flex: none;
  }

  .about__footer-meta {
    align-items: flex-start;
    flex-direction: column;
    justify-content: flex-start;
  }
}