.page-about {
  --tl-axis: 4px;
  --tl-pad: 26px;
  background: var(--night);
  color: var(--f-white);
  padding-bottom: var(--gap-lg);
  overflow-x: hidden;
}

.page-about .about-context {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 22px 0 14px;
  border-bottom: var(--bd) solid var(--line);
}

.page-about .about-sep {
  margin: 0 8px;
  color: var(--gold);
}

.page-about .about-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gray);
  margin: 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 30px 0 var(--gap-md);
  background:
    radial-gradient(115% 85% at 88% -8%, rgba(233, 185, 73, .15), transparent 62%),
    radial-gradient(90% 70% at 0% 110%, rgba(255, 138, 61, .10), transparent 60%),
    var(--night);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: start;
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  letter-spacing: .26em;
  color: var(--gold-soft);
  border-left: 5px solid var(--flame);
  padding-left: 10px;
  margin: 0 0 16px;
}

.page-about .about-title {
  font-size: clamp(36px, 9.5vw, 72px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  color: var(--f-white);
  padding-bottom: 12px;
  background: linear-gradient(94deg, rgba(233, 185, 73, .22), rgba(233, 185, 73, 0) 64%);
  clip-path: polygon(0 0, 100% 0, 100% 76%, 95% 100%, 0 100%);
}

.page-about .about-hero__lead {
  font-size: 17px;
  line-height: 1.85;
  color: var(--f-white);
  max-width: 64ch;
  margin: 0 0 1.4em;
}

.page-about .about-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-hero__media {
  margin: 0;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1100 / 1300;
  object-fit: cover;
  border: var(--bd) solid var(--gold);
  box-shadow: var(--hard);
}

/* ---------- 转经筒分隔 ---------- */

.page-about .about-rings {
  display: flex;
  justify-content: center;
  padding: 6px 0 2px;
  color: var(--gold);
  opacity: .72;
}

.page-about .about-rings svg {
  width: 52px;
  height: 52px;
  animation: none;
}

/* ---------- 章节骨架 ---------- */

.page-about .about-chapter {
  padding: var(--gap-md) 0;
}

.page-about .about-chapter__head {
  position: relative;
  padding-left: 60px;
  margin-bottom: 22px;
}

.page-about .about-no {
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  text-shadow: 4px 4px 0 rgba(233, 185, 73, .18);
}

.page-about .about-chapter__title {
  font-size: clamp(24px, 6vw, 40px);
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.2;
  margin: 0;
  color: var(--f-white);
}

.page-about .about-vnote {
  display: none;
}

.page-about .about-text p {
  font-size: 17px;
  line-height: 1.85;
  margin: 0 0 1.4em;
  max-width: 68ch;
  color: var(--f-white);
}

.page-about .about-em {
  color: var(--gold);
  font-weight: 700;
}

.page-about .about-panel {
  background: var(--night-2);
}

.page-about .about-panel p {
  font-size: 17px;
  line-height: 1.85;
  margin: 0 0 1.2em;
  color: var(--f-white);
}

.page-about .about-panel p:last-child {
  margin-bottom: 0;
}

/* ---------- 厅别色带与卡片 ---------- */

.page-about .about-band-figure {
  margin: 0 0 var(--gap-sm);
  border-top: var(--bd) solid var(--gold);
  border-bottom: var(--bd) solid var(--gold);
  background: var(--night-2);
}

.page-about .about-band-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 600;
  object-fit: cover;
}

.page-about .about-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-about .about-chip {
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: var(--night-2);
  border: var(--bd) solid var(--line);
  color: var(--f-white);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  padding: 10px 14px;
  cursor: pointer;
  transition: border-color .12s ease, background-color .12s ease, color .12s ease;
}

.page-about .about-chip::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  background: var(--gray);
}

.page-about .about-chip[data-filter="蓝厅"]::before { background: var(--f-blue); }
.page-about .about-chip[data-filter="白厅"]::before { background: var(--f-white); }
.page-about .about-chip[data-filter="红厅"]::before { background: var(--f-red); }
.page-about .about-chip[data-filter="绿厅"]::before { background: var(--f-green); }
.page-about .about-chip[data-filter="黄厅"]::before { background: var(--f-yellow); }
.page-about .about-chip[data-filter="综合对照厅"]::before {
  background: linear-gradient(90deg,
    var(--f-blue) 0 20%, var(--f-white) 20% 40%, var(--f-red) 40% 60%,
    var(--f-green) 60% 80%, var(--f-yellow) 80% 100%);
}

.page-about .about-chip:hover,
.page-about .about-chip:focus-visible {
  border-color: var(--gold);
  outline: none;
}

.page-about .about-chip[aria-pressed="true"] {
  border-color: var(--gold);
  background: #1c2757;
  color: var(--gold-soft);
}

.page-about .about-halls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-hall {
  background: var(--night-2);
  border: var(--bd) solid var(--line);
  border-top: 8px solid var(--gray);
  box-shadow: var(--hard);
  padding: 20px 20px 22px;
  transition: border-color .12s ease, transform .12s ease;
}

.page-about .about-hall:hover {
  border-color: var(--gold);
  transform: translate(-2px, -2px);
}

.page-about .about-hall--blue { border-top-color: var(--f-blue); }
.page-about .about-hall--white { border-top-color: var(--f-white); }
.page-about .about-hall--red { border-top-color: var(--f-red); }
.page-about .about-hall--green { border-top-color: var(--f-green); }
.page-about .about-hall--yellow { border-top-color: var(--f-yellow); }
.page-about .about-hall--mix {
  border-top-color: var(--gold);
  background: linear-gradient(160deg, #1b2456 0%, var(--night-2) 70%);
}

.page-about .about-hall__name {
  font-size: 20px;
  font-weight: 900;
  margin: 0 0 6px;
  color: var(--f-white);
}

.page-about .about-hall__role {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--gold-soft);
  margin: 0 0 12px;
}

.page-about .about-hall__desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--f-white);
}

/* ---------- 团队 ---------- */

.page-about .about-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap-sm);
  align-items: start;
}

.page-about .about-split__media .figure {
  margin: 0;
}

.page-about .about-split__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 800;
  object-fit: cover;
  border: var(--bd) solid var(--gold);
  box-shadow: var(--hard);
}

.page-about .about-split__media figcaption {
  font-size: 13px;
  color: var(--gray);
  margin-top: 10px;
  padding-left: 10px;
  border-left: 4px solid var(--flame);
}

.page-about .about-teams {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 8px;
}

.page-about .about-team {
  background: var(--night-2);
  border: var(--bd) solid var(--line);
  border-left: 8px solid var(--gray);
  padding: 18px 18px 20px;
}

.page-about .about-team--a { border-left-color: var(--f-blue); }
.page-about .about-team--b { border-left-color: var(--gold); }
.page-about .about-team--c { border-left-color: var(--flame); }

.page-about .about-team__name {
  font-size: 18px;
  font-weight: 900;
  margin: 0 0 6px;
  color: var(--f-white);
}

.page-about .about-team__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold-soft);
  margin: 0 0 10px;
}

.page-about .about-team__desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--f-white);
}

/* ---------- 时间轴 ---------- */

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--tl-pad);
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: var(--tl-axis);
  top: 4px;
  bottom: 4px;
  width: var(--bd);
  background: linear-gradient(180deg,
    var(--gold) 0%, var(--f-blue) 30%, var(--f-red) 55%,
    var(--f-green) 78%, var(--f-yellow) 100%);
  opacity: .85;
}

.page-about .about-tl {
  position: relative;
  padding-bottom: 22px;
}

.page-about .about-tl:last-child {
  padding-bottom: 0;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-axis) - var(--tl-pad) - 7.5px);
  top: 9px;
  width: 18px;
  height: 18px;
  background: var(--night);
  border: var(--bd) solid var(--gold);
  transform: rotate(45deg);
  transition: background-color .12s ease;
}

.page-about .about-tl:hover::before {
  background: var(--gold);
}

.page-about .about-tl__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 10px;
  letter-spacing: .02em;
}

.page-about .about-tl__panel {
  background: var(--night-2);
  border: var(--bd) solid var(--line);
  box-shadow: var(--hard);
  padding: 18px 18px 20px;
  transition: border-color .12s ease, background-color .12s ease;
}

.page-about .about-tl:hover .about-tl__panel {
  border-color: var(--gold);
  background: #1a2453;
}

.page-about .about-tl__title {
  font-size: 19px;
  font-weight: 900;
  margin: 0 0 8px;
  color: var(--f-white);
}

.page-about .about-tl__desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--f-white);
}

/* ---------- 合作与投稿 ---------- */

.page-about .about-makers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: 6px 0 var(--gap-sm);
}

.page-about .about-maker {
  border: var(--bd) solid var(--line);
  box-shadow: var(--hard);
  padding: 20px;
  background: var(--night-2);
  position: relative;
  overflow: hidden;
}

.page-about .about-maker::after {
  content: "";
  position: absolute;
  right: -30px;
  bottom: -30px;
  width: 90px;
  height: 90px;
  border: var(--bd) solid currentColor;
  border-radius: 50%;
  opacity: .35;
}

.page-about .about-maker--blue { color: var(--f-blue); border-top: 6px solid var(--f-blue); }
.page-about .about-maker--gold { color: var(--gold); border-top: 6px solid var(--gold); }
.page-about .about-maker--night { color: var(--f-white); border-top: 6px solid var(--f-white); }

.page-about .about-maker__name {
  font-size: 18px;
  font-weight: 900;
  margin: 0 0 10px;
  color: var(--f-white);
  position: relative;
  z-index: 1;
}

.page-about .about-maker__desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--f-white);
  position: relative;
  z-index: 1;
}

.page-about .about-submit {
  background: var(--night-2);
  border: var(--bd) solid var(--gold);
  box-shadow: var(--hard-gold);
  padding: 24px;
}

.page-about .about-submit__title {
  font-size: 20px;
  font-weight: 900;
  margin: 0 0 12px;
  color: var(--gold-soft);
}

.page-about .about-submit p {
  font-size: 17px;
  line-height: 1.85;
  margin: 0 0 1.2em;
  color: var(--f-white);
  max-width: 68ch;
}

.page-about .about-submit p:last-child {
  margin-bottom: 0;
}

/* ---------- 长期做法 ---------- */

.page-about .about-habits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .about-habit {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 16px;
  align-items: start;
  background: var(--night-2);
  border: var(--bd) solid var(--line);
  border-bottom-color: var(--gold);
  padding: 20px 18px;
}

.page-about .about-habit__no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-about .about-habit__name {
  font-size: 17px;
  font-weight: 900;
  margin: 0 0 8px;
  color: var(--f-white);
}

.page-about .about-habit p {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: var(--f-white);
}

/* ---------- 收束 ---------- */

.page-about .about-closer {
  margin-top: var(--gap-md);
  background: linear-gradient(158deg, var(--wine) 0%, #4f121c 100%);
  border-top: var(--bd) solid var(--gold);
  border-bottom: var(--bd) solid var(--gold);
  padding: var(--gap-md) 0;
}

.page-about .about-closer__inner {
  position: relative;
  padding-left: 60px;
}

.page-about .about-no--light {
  color: var(--gold-soft);
  text-shadow: 4px 4px 0 rgba(0, 0, 0, .3);
}

.page-about .about-closer__title {
  font-size: clamp(24px, 6vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 16px;
  color: #fff;
}

.page-about .about-closer__lead {
  font-size: 17px;
  line-height: 1.85;
  max-width: 66ch;
  margin: 0 0 1.4em;
  color: #f6e7d8;
}

.page-about .about-closer__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-closer__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  align-items: baseline;
  font-size: 16px;
  line-height: 1.7;
  color: #fff;
  border-bottom: 1px dashed rgba(255, 255, 255, .22);
  padding-bottom: 10px;
}

.page-about .about-closer__key {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--gold-soft);
  min-width: 76px;
}

.page-about .about-closer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-about .about-halls,
  .page-about .about-makers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-teams {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 46px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 12fr) minmax(0, 10fr);
    gap: 56px;
    align-items: center;
  }

  .page-about .about-chapter__head {
    padding-left: 92px;
    padding-right: 70px;
    margin-bottom: 28px;
  }

  .page-about .about-no {
    font-size: 58px;
    top: 0;
  }

  .page-about .about-vnote {
    display: block;
    position: absolute;
    right: 0;
    top: 6px;
    writing-mode: vertical-rl;
    letter-spacing: .35em;
    font-size: 13px;
    color: var(--gold-soft);
    margin: 0;
  }

  .page-about .about-panel--shift {
    margin-left: 24px;
  }

  .page-about .about-halls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-makers {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 10fr) minmax(0, 14fr);
    gap: 48px;
  }

  .page-about .about-teams {
    grid-template-columns: 1fr;
  }

  .page-about .about-timeline {
    --tl-axis: 200px;
    --tl-pad: 260px;
  }

  .page-about .about-tl__year {
    position: absolute;
    right: calc(100% + 30px);
    top: 10px;
    margin: 0;
    font-size: 34px;
    text-align: right;
    white-space: nowrap;
  }

  .page-about .about-tl__panel {
    padding: 22px 24px;
  }

  .page-about .about-tl:nth-child(even) .about-tl__panel {
    margin-left: 46px;
  }

  .page-about .about-closer__inner {
    padding-left: 92px;
  }

  .page-about .about-closer__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    display: grid;
  }
}

@media (min-width: 1100px) {
  .page-about .about-split {
    grid-template-columns: minmax(0, 11fr) minmax(0, 13fr);
    gap: 64px;
  }

  .page-about .about-timeline {
    --tl-axis: 230px;
    --tl-pad: 300px;
  }
}