.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: clamp(22px, 5vw, 54px) 0 clamp(36px, 6vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(118deg, rgba(226, 58, 46, .42) 0%, rgba(255, 107, 53, .14) 34%, rgba(7, 16, 24, 0) 64%),
    repeating-linear-gradient(90deg, rgba(201, 162, 39, .16) 0 1px, transparent 1px 92px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  z-index: -1;
  width: 62%;
  height: 144%;
  pointer-events: none;
  transform: skewX(-14deg);
  background: linear-gradient(180deg, rgba(25, 195, 177, .18), rgba(7, 16, 24, 0) 72%);
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-about .about-hero .breadcrumb__link {
  color: rgba(255, 255, 255, .62);
}

.page-about .about-hero .breadcrumb__link:hover,
.page-about .about-hero .breadcrumb__link:focus-visible {
  color: var(--jade-bright);
}

.page-about .about-hero .breadcrumb__sep,
.page-about .about-hero .breadcrumb__current {
  color: rgba(255, 255, 255, .84);
}

.page-about .about-hero__text .eyebrow {
  margin-top: clamp(14px, 2vw, 22px);
  color: var(--gold);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 15ch;
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(255, 255, 255, .76);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  border-top: 1px solid var(--line-on-dark);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--jade-bright);
}

.page-about .about-hero__label {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .54);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__art {
  margin: 0;
  position: relative;
}

.page-about .about-hero__art img {
  width: 100%;
  aspect-ratio: 7 / 5;
  object-fit: cover;
}

/* ---------- 长卷骨架 ---------- */
.page-about .lore {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  padding: clamp(30px, 5vw, 64px) 0 clamp(48px, 7vw, 96px);
}

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

.page-about .lore__index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .lore__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 2px solid var(--line-on-light);
}

.page-about .lore__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -2px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--gray);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .lore__link:hover,
.page-about .lore__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--flame);
  background: var(--paper-2);
}

.page-about .lore__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-about .lore__main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.5vw, 60px);
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .chapter {
  min-width: 0;
  padding-top: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--line-on-light);
}

.page-about .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .chapter--dark {
  background: var(--ink-2);
  color: var(--white);
  border: 1px solid var(--line-on-dark);
  border-top-color: var(--line-on-dark);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 46px);
}

.page-about .chapter__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-about .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 35px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .chapter--dark .chapter__title {
  color: var(--white);
}

.page-about .chapter__lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .68);
}

.page-about .chapter--dark .prose p {
  color: rgba(255, 255, 255, .76);
}

/* ---------- 01 支柱 ---------- */
.page-about .pillars {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .pillar {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-about .pillar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--flame), var(--ember));
}

.page-about .pillar:hover {
  transform: translateY(-2px);
  border-color: rgba(226, 58, 46, .42);
}

.page-about .pillar__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .pillar__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 02 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--flame), var(--gold) 48%, var(--jade));
  opacity: .7;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(18px, 2.6vw, 26px) 38px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 2px solid var(--gold);
  transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--flame);
  border-color: var(--ember);
  transform: scale(1.35);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: 24px;
  line-height: 1;
  letter-spacing: .05em;
  color: var(--jade-bright);
  margin-bottom: 8px;
}

.page-about .timeline__card {
  background: rgba(255, 255, 255, .045);
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  transform: translateY(-2px);
  border-color: rgba(201, 162, 39, .62);
  background: rgba(255, 255, 255, .075);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--white);
}

.page-about .timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .74);
}

.page-about .timeline__note {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(201, 162, 39, .32);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: var(--gold);
}

/* ---------- 03 团队 ---------- */
.page-about .team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

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

.page-about .team__art img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .role {
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: border-color .2s var(--ease);
}

.page-about .role[open] {
  border-color: rgba(25, 195, 177, .55);
}

.page-about .role__name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .role__name::-webkit-details-marker {
  display: none;
}

.page-about .role__name::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--flame);
}

.page-about .role[open] .role__name::after {
  content: "－";
}

.page-about .role__body {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 04 三条服务线 ---------- */
.page-about .lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .lane {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-about .lane:hover {
  transform: translateY(-2px);
  border-color: rgba(226, 58, 46, .38);
}

.page-about .lane--info {
  background: var(--ink-2);
  border-color: var(--line-on-dark);
  color: var(--white);
}

.page-about .lane--info::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  pointer-events: none;
  background: linear-gradient(225deg, rgba(255, 107, 53, .34), rgba(255, 107, 53, 0) 72%);
}

.page-about .lane--info:hover {
  border-color: rgba(201, 162, 39, .62);
}

.page-about .lane__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .lane__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .lane--info .lane__title {
  color: var(--white);
}

.page-about .lane__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .lane--info .lane__text {
  color: rgba(255, 255, 255, .76);
}

.page-about .lane__meta {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--gray);
}

.page-about .lane--info .lane__meta {
  color: rgba(255, 255, 255, .56);
}

.page-about .lane__link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--flame);
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 58, 46, .4);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .lane__link:hover,
.page-about .lane__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

.page-about .lane--info .lane__link {
  color: var(--jade-bright);
  border-bottom-color: rgba(94, 234, 212, .45);
}

.page-about .lane--info .lane__link:hover,
.page-about .lane--info .lane__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 05 合作生态 ---------- */
.page-about .eco {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .eco__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(255, 255, 255, .76);
}

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

.page-about .eco__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-content: flex-start;
}

.page-about .eco-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  padding: 6px 12px;
  border: 1px solid var(--line-on-dark);
  border-radius: 999px;
  color: rgba(255, 255, 255, .8);
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-about .eco-tag:hover {
  transform: translateY(-2px);
  border-color: var(--jade-bright);
  color: var(--jade-bright);
}

.page-about .proof {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: clamp(16px, 2.2vw, 22px) 0 0;
  border-top: 1px solid var(--line-on-dark);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-about .proof__item {
  min-width: 0;
}

.page-about .proof__num {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--jade-bright);
}

.page-about .proof__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: rgba(255, 255, 255, .56);
}

.page-about .eco__art {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-about .eco__art img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 06 区域与联系 ---------- */
.page-about .reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(20px, 3vw, 28px);
  background: var(--line-on-light);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .reach__item {
  background: var(--white);
  padding: 14px 16px;
  min-width: 0;
}

.page-about .reach__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .reach__val {
  display: block;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-about .reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-about .pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .proof {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .page-about .reach {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .timeline::before {
    left: 9px;
  }
  .page-about .timeline__item {
    padding-left: 44px;
  }
  .page-about .timeline__item::before {
    left: 2px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
  .page-about .team {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: center;
  }
  .page-about .roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .lanes {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 16px;
  }
  .page-about .lane--info {
    grid-column: 1;
    grid-row: 1 / span 2;
  }
  .page-about .lane:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }
  .page-about .lane:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }
  .page-about .eco {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .lore {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }
  .page-about .lore__index {
    display: block;
    position: sticky;
    top: 112px;
    align-self: start;
  }
  .page-about .reach {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}



.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--white);
  padding: clamp(22px, 5vw, 54px) 0 clamp(36px, 6vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(118deg, rgba(226, 58, 46, .42) 0%, rgba(255, 107, 53, .14) 34%, rgba(7, 16, 24, 0) 64%),
    repeating-linear-gradient(90deg, rgba(201, 162, 39, .16) 0 1px, transparent 1px 92px);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  z-index: -1;
  width: 62%;
  height: 144%;
  pointer-events: none;
  transform: skewX(-14deg);
  background: linear-gradient(180deg, rgba(25, 195, 177, .18), rgba(7, 16, 24, 0) 72%);
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

.page-about .about-hero .breadcrumb__link {
  color: rgba(255, 255, 255, .62);
}

.page-about .about-hero .breadcrumb__link:hover,
.page-about .about-hero .breadcrumb__link:focus-visible {
  color: var(--jade-bright);
}

.page-about .about-hero .breadcrumb__sep,
.page-about .about-hero .breadcrumb__current {
  color: rgba(255, 255, 255, .84);
}

.page-about .about-hero__text .eyebrow {
  margin-top: clamp(14px, 2vw, 22px);
  color: var(--gold);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 15ch;
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(255, 255, 255, .76);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  border-top: 1px solid var(--line-on-dark);
}

.page-about .about-hero__stat {
  min-width: 0;
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--jade-bright);
}

.page-about .about-hero__label {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .54);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__art {
  margin: 0;
  position: relative;
}

.page-about .about-hero__art img {
  width: 100%;
  aspect-ratio: 7 / 5;
  object-fit: cover;
}

/* ---------- 长卷骨架 ---------- */
.page-about .lore {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  padding: clamp(30px, 5vw, 64px) 0 clamp(48px, 7vw, 96px);
}

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

.page-about .lore__index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gray);
}

.page-about .lore__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 2px solid var(--line-on-light);
}

.page-about .lore__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-left: -2px;
  padding: 10px 12px;
  border-left: 2px solid transparent;
  color: var(--gray);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.4;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .lore__link:hover,
.page-about .lore__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--flame);
  background: var(--paper-2);
}

.page-about .lore__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-about .lore__main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.5vw, 60px);
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .chapter {
  min-width: 0;
  padding-top: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--line-on-light);
}

.page-about .chapter:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-about .chapter--dark {
  background: var(--ink-2);
  color: var(--white);
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius);
  padding: clamp(22px, 4vw, 46px);
}

.page-about .chapter--dark:first-child {
  border-top: 1px solid var(--line-on-dark);
}

.page-about .chapter__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-about .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.4vw, 35px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .chapter--dark .chapter__title {
  color: var(--white);
}

.page-about .chapter__lead {
  margin: 0 0 clamp(20px, 3vw, 30px);
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .68);
}

.page-about .chapter--dark .prose p {
  color: rgba(255, 255, 255, .76);
}

/* ---------- 01 支柱 ---------- */
.page-about .pillars {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .pillar {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-about .pillar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 42px;
  height: 3px;
  background: linear-gradient(90deg, var(--flame), var(--ember));
}

.page-about .pillar:hover {
  transform: translateY(-2px);
  border-color: rgba(226, 58, 46, .42);
}

.page-about .pillar__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .pillar__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 02 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 7px;
  width: 2px;
  background: linear-gradient(180deg, var(--flame), var(--gold) 48%, var(--jade));
  opacity: .72;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 clamp(18px, 2.6vw, 26px) 38px;
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 2px solid var(--gold);
  transition: transform .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}

.page-about .timeline__item:hover::before,
.page-about .timeline__item:focus-within::before {
  background: var(--flame);
  border-color: var(--ember);
  transform: scale(1.35);
}

.page-about .timeline__year {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: 24px;
  line-height: 1;
  letter-spacing: .05em;
  color: var(--jade-bright);
  margin-bottom: 8px;
}

.page-about .timeline__card {
  background: rgba(255, 255, 255, .045);
  border: 1px solid var(--line-on-dark);
  border-radius: var(--radius);
  padding: 16px 18px;
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  transform: translateY(-2px);
  border-color: rgba(201, 162, 39, .62);
  background: rgba(255, 255, 255, .075);
}

.page-about .timeline__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--white);
}

.page-about .timeline__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(255, 255, 255, .74);
}

.page-about .timeline__note {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(201, 162, 39, .32);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: var(--gold);
}

/* ---------- 03 团队 ---------- */
.page-about .team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

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

.page-about .team__art img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .roles {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .role {
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: border-color .2s var(--ease);
}

.page-about .role[open] {
  border-color: rgba(25, 195, 177, .55);
}

.page-about .role__name {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .role__name::-webkit-details-marker {
  display: none;
}

.page-about .role__name::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--flame);
}

.page-about .role[open] .role__name::after {
  content: "－";
}

.page-about .role__body {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 04 三条服务线 ---------- */
.page-about .lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .lane {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--white);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-about .lane:hover {
  transform: translateY(-2px);
  border-color: rgba(226, 58, 46, .38);
}

.page-about .lane--info {
  background: var(--ink-2);
  border-color: var(--line-on-dark);
  color: var(--white);
}

.page-about .lane--info::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 96px;
  height: 96px;
  pointer-events: none;
  background: linear-gradient(225deg, rgba(255, 107, 53, .34), rgba(255, 107, 53, 0) 72%);
}

.page-about .lane--info:hover {
  border-color: rgba(201, 162, 39, .62);
}

.page-about .lane__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 10px;
}

.page-about .lane__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .lane--info .lane__title {
  color: var(--white);
}

.page-about .lane__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

.page-about .lane--info .lane__text {
  color: rgba(255, 255, 255, .76);
}

.page-about .lane__meta {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: .02em;
  color: var(--gray);
}

.page-about .lane--info .lane__meta {
  color: rgba(255, 255, 255, .56);
}

.page-about .lane__link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--flame);
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 58, 46, .4);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .lane__link:hover,
.page-about .lane__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

.page-about .lane--info .lane__link {
  color: var(--jade-bright);
  border-bottom-color: rgba(94, 234, 212, .45);
}

.page-about .lane--info .lane__link:hover,
.page-about .lane--info .lane__link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 05 合作生态 ---------- */
.page-about .eco {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.6vw, 28px);
}

.page-about .eco__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(255, 255, 255, .76);
}

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

.page-about .eco__tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-content: flex-start;
}

.page-about .eco-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  padding: 6px 12px;
  border: 1px solid var(--line-on-dark);
  border-radius: 999px;
  color: rgba(255, 255, 255, .8);
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-about .eco-tag:hover {
  transform: translateY(-2px);
  border-color: var(--jade-bright);
  color: var(--jade-bright);
}

.page-about .proof {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: clamp(16px, 2.2vw, 22px) 0 0;
  border-top: 1px solid var(--line-on-dark);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-about .proof__item {
  min-width: 0;
}

.page-about .proof__num {
  display: block;
  font-family: var(--font-condensed);
  font-weight: 600;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.05;
  letter-spacing: .02em;
  color: var(--jade-bright);
}

.page-about .proof__label {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .03em;
  color: rgba(255, 255, 255, .56);
}

.page-about .eco__art {
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-about .eco__art img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* ---------- 06 区域与联系 ---------- */
.page-about .reach {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(20px, 3vw, 28px);
  background: var(--line-on-light);
  border: 1px solid var(--line-on-light);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .reach__item {
  background: var(--white);
  padding: 14px 16px;
  min-width: 0;
}

.page-about .reach__key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--gold);
  margin-bottom: 6px;
}

.page-about .reach__val {
  display: block;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

.page-about .reach__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .pillars {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .proof {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
  .page-about .reach {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .timeline::before {
    left: 9px;
  }
  .page-about .timeline__item {
    padding-left: 44px;
  }
  .page-about .timeline__item::before {
    left: 2px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
  .page-about .team {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: center;
  }
  .page-about .roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .lanes {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 16px;
  }
  .page-about .lane--info {
    grid-column: 1;
    grid-row: 1 / span 2;
  }
  .page-about .lane:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }
  .page-about .lane:nth-child(3) {
    grid-column: 2;
    grid-row: 2;
  }
  .page-about .eco {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .lore {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }
  .page-about .lore__index {
    display: block;
    position: sticky;
    top: 112px;
    align-self: start;
  }
  .page-about .reach {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}