.page-about {
  --about-line: rgba(16, 28, 18, 0.12);
  --about-line-soft: rgba(245, 248, 238, 0.14);
  --about-gap: clamp(20px, 3.4vw, 44px);
  --about-pad: clamp(22px, 4vw, 52px);
  overflow-x: clip;
}

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

/* ---------- 首屏 ---------- */
.page-about .page-about__hero {
  padding-top: clamp(96px, 14vw, 168px);
  padding-bottom: clamp(32px, 6vw, 76px);
  border-radius: 0 0 var(--kg-r-xl) var(--kg-r-xl);
}

.page-about .about-hero {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(20px, 4vw, 40px);
}

.page-about .about-hero__title {
  margin: 14px 0 18px;
  font-size: clamp(30px, 6.4vw, 66px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--kg-cream);
  max-width: 20ch;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.8;
  color: rgba(245, 248, 238, 0.8);
}

.page-about .about-hero__media {
  margin: 0;
  border-radius: var(--kg-r-lg);
  overflow: hidden;
}

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

/* ---------- 章节预览索引 ---------- */
.page-about .about-map {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-map__row {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 2px 14px;
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-map__coord {
  font-family: var(--kg-font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--kg-neon);
}

.page-about .about-map__link {
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  color: var(--kg-cream);
  text-decoration: none;
  transition: color 0.24s var(--kg-ease), transform 0.24s var(--kg-ease);
}

.page-about .about-map__link:hover,
.page-about .about-map__link:focus-visible {
  color: var(--kg-neon);
  transform: translateX(3px);
}

.page-about .about-map__meta {
  grid-column: 2;
  font-size: 13px;
  color: var(--kg-mist);
}

/* ---------- 01 品牌与定位 ---------- */
.page-about .page-about__intro {
  padding-block: clamp(48px, 8vw, 104px);
}

.page-about .about-intro {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-intro__title {
  margin: 12px 0 20px;
  font-size: clamp(24px, 3.8vw, 44px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--kg-peel-deep);
  max-width: 22ch;
}

.page-about .about-intro__body p {
  margin: 0 0 1.1em;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(46, 31, 20, 0.86);
}

.page-about .about-lanes {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: 16px;
  padding: var(--about-pad);
  border-radius: var(--kg-r-lg);
  background: var(--kg-moss);
}

.page-about .about-lanes::after {
  content: "";
  position: absolute;
  right: -56px;
  bottom: -70px;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: rgba(111, 191, 58, 0.3);
  pointer-events: none;
}

.page-about .about-lane {
  position: relative;
  z-index: 1;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(63, 139, 30, 0.24);
}

.page-about .about-lane__key {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 12px;
  border-radius: var(--kg-r-pill);
  background: var(--kg-flesh-deep);
  color: var(--kg-cream);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.page-about .about-lane__val {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--kg-peel-deep);
}

.page-about .about-lanes__link {
  position: relative;
  z-index: 1;
  align-self: start;
  font-size: 15px;
  font-weight: 800;
  color: var(--kg-flesh-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--kg-neon);
  padding-bottom: 3px;
}

.page-about .about-lanes__link:hover,
.page-about .about-lanes__link:focus-visible {
  color: var(--kg-peel-deep);
}

/* ---------- 02 覆盖范围 ---------- */
.page-about .page-about__scale {
  margin-block: clamp(12px, 2.4vw, 28px);
  padding-block: clamp(40px, 7vw, 88px);
  border-radius: var(--kg-r-xl);
}

.page-about .about-scale {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: rgba(245, 248, 238, 0.16);
  border-radius: var(--kg-r-md);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: clamp(16px, 2.6vw, 26px);
  background: var(--kg-ink);
  transition: background 0.28s var(--kg-ease);
}

.page-about .about-stat:hover {
  background: #17281b;
}

.page-about .about-stat__value {
  font-family: var(--kg-font-mono);
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--kg-neon);
}

.page-about .about-stat__label {
  font-size: 15px;
  font-weight: 700;
  color: var(--kg-cream);
}

.page-about .about-stat__foot {
  font-size: 13px;
  line-height: 1.65;
  color: var(--kg-mist);
}

.page-about .about-ring {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 22px;
}

.page-about .about-ring svg {
  width: min(300px, 74%);
  height: auto;
}

.page-about .about-ring__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-ring__chip {
  padding: 5px 12px;
  border-radius: var(--kg-r-pill);
  border: 1px solid var(--about-line-soft);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: rgba(245, 248, 238, 0.78);
}

.page-about .about-scale__banner {
  margin: clamp(28px, 4vw, 48px) 0 0;
  border-radius: var(--kg-r-lg);
  overflow: hidden;
}

.page-about .about-scale__banner img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

/* ---------- 03 团队分工 ---------- */
.page-about .page-about__team {
  margin-block: clamp(12px, 2.4vw, 28px);
  padding-block: clamp(40px, 7vw, 88px);
  border-radius: var(--kg-r-xl);
}

.page-about .about-team {
  display: grid;
  gap: var(--about-gap);
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-cell {
  display: grid;
  gap: 9px;
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--kg-r-md);
  border-left: 4px solid var(--kg-flesh);
  background: var(--kg-cream);
  transition: transform 0.28s var(--kg-ease), box-shadow 0.28s var(--kg-ease),
    border-left-color 0.28s var(--kg-ease);
}

@media (hover: hover) {
  .page-about .about-cell:hover {
    transform: translateY(-4px);
    box-shadow: var(--kg-shadow);
    border-left-color: var(--kg-neon);
  }
}

.page-about .about-cell__coord {
  font-family: var(--kg-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--kg-peel);
}

.page-about .about-cell__name {
  margin: 0;
  font-size: 18px;
  font-weight: 800;
  color: var(--kg-peel-deep);
}

.page-about .about-cell__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(46, 31, 20, 0.8);
}

.page-about .about-team__media {
  margin: 0;
  border-radius: var(--kg-r-lg);
  overflow: hidden;
}

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

/* ---------- 04 阶段时间轴 ---------- */
.page-about .page-about__timeline {
  padding-block: clamp(48px, 8vw, 104px);
}

.page-about .about-timeline {
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-timeline__tabs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 4px 18px;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__tabs .kg-seg__tab {
  flex: 0 0 auto;
  white-space: nowrap;
}

.page-about .about-stage {
  display: grid;
  gap: clamp(16px, 3vw, 40px);
  padding: var(--about-pad);
  border-radius: var(--kg-r-lg);
  margin-bottom: 16px;
}

.page-about .about-stage--1 {
  background: #DCE8CE;
}

.page-about .about-stage--2 {
  background: #CFE2BB;
}

.page-about .about-stage--3 {
  background: #BFD8A4;
}

.page-about .about-stage--4 {
  background: #AED08E;
}

.page-about .about-stage__aside {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-stage__num {
  font-family: var(--kg-font-mono);
  font-size: clamp(56px, 11vw, 116px);
  font-weight: 200;
  line-height: 0.8;
  letter-spacing: -0.04em;
  color: var(--kg-flesh-deep);
}

.page-about .about-stage__name {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: rgba(46, 31, 20, 0.72);
}

.page-about .about-stage__flag {
  align-self: flex-start;
  padding: 5px 13px;
  border-radius: var(--kg-r-pill);
  background: var(--kg-neon);
  color: var(--kg-ink);
  font-size: 12.5px;
  font-weight: 800;
}

.page-about .about-stage__lead {
  margin: 0 0 14px;
  font-size: clamp(18px, 2.1vw, 24px);
  font-weight: 800;
  line-height: 1.42;
  color: var(--kg-peel-deep);
}

.page-about .about-stage__body p {
  margin: 0 0 1em;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(46, 31, 20, 0.84);
}

.page-about .about-stage__list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stage__list li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(46, 31, 20, 0.88);
}

.page-about .about-stage__list li::before {
  content: "";
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--kg-flesh-deep);
  justify-self: start;
}

.page-about .about-timeline__foot {
  margin: 22px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(46, 31, 20, 0.74);
}

.page-about .about-timeline__foot a {
  font-weight: 800;
  color: var(--kg-flesh-deep);
  text-decoration: none;
  border-bottom: 2px solid var(--kg-neon);
}

/* ---------- 05 合作生态 ---------- */
.page-about .page-about__eco {
  padding-block: clamp(48px, 8vw, 104px);
}

.page-about .about-eco {
  display: grid;
  gap: 18px;
  margin-top: clamp(28px, 4vw, 44px);
}

.page-about .about-eco__card {
  display: grid;
  gap: 12px;
  padding: clamp(20px, 3vw, 30px);
  border-radius: var(--kg-r-lg);
  border-top: 6px solid var(--kg-flesh);
  background: var(--kg-moss);
}

.page-about .about-eco__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  color: var(--kg-peel-deep);
}

.page-about .about-eco__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(46, 31, 20, 0.82);
}

/* ---------- 06 服务准则 ---------- */
.page-about .page-about__principles {
  margin-block: clamp(12px, 2.4vw, 28px);
  padding-block: clamp(44px, 7vw, 88px);
  border-radius: var(--kg-r-xl);
}

.page-about .about-principles {
  display: grid;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-principles__item {
  display: grid;
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--kg-r-md);
  background: rgba(245, 248, 238, 0.08);
  border: 1px solid rgba(245, 248, 238, 0.14);
}

.page-about .about-principles__num {
  font-family: var(--kg-font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--kg-neon);
}

.page-about .about-principles__title {
  margin: 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--kg-cream);
}

.page-about .about-principles__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(245, 248, 238, 0.76);
}

.page-about .about-contact-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(22px, 3vw, 32px);
  border-radius: var(--kg-r-lg);
  background: rgba(16, 28, 18, 0.42);
}

.page-about .about-contact-strip__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 248, 238, 0.86);
}

/* ---------- 桌面断点 ---------- */
@media (min-width: 720px) {
  .page-about .about-map__row {
    grid-template-columns: 3.6rem minmax(0, 1fr) minmax(0, 20ch);
    padding: 16px 0;
  }

  .page-about .about-map__meta {
    grid-column: auto;
    text-align: right;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }

  .page-about .about-hero__media {
    transform: translateY(clamp(0px, 2vw, 26px));
  }

  .page-about .about-intro {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, 0.84fr);
    align-items: start;
  }

  .page-about .about-stage {
    grid-template-columns: minmax(0, 0.28fr) minmax(0, 0.72fr);
    align-items: start;
  }

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

@media (min-width: 960px) {
  .page-about .about-scale {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.72fr);
    align-items: center;
  }

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

  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.6fr);
    align-items: start;
  }

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

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

@media (max-width: 420px) {
  .page-about .about-stats {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cell,
  .page-about .about-map__link,
  .page-about .about-stat {
    transition: none;
  }

  .page-about .about-map__link:hover,
  .page-about .about-map__link:focus-visible,
  .page-about .about-cell:hover {
    transform: none;
  }
}