.page-about {
  --ab-line: 2px solid var(--line);
  --ab-soft: #cfe0ec;
  background: var(--bg);
  color: var(--ink);
  overflow-x: clip;
  font-family: var(--font-body);
}

.page-about p {
  color: var(--ab-soft);
  line-height: 1.75;
}

.page-about h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 3.6vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--ice);
}

.page-about h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--ice);
}

.page-about a:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 32px) 0 clamp(32px, 4.5vw, 56px);
  background:
    radial-gradient(90% 70% at 88% 2%, rgba(255, 90, 31, 0.24), transparent 62%),
    radial-gradient(70% 60% at 0% 42%, rgba(40, 240, 194, 0.12), transparent 68%),
    linear-gradient(175deg, var(--sea-0) 0%, var(--sea-1) 68%, var(--sea-0) 100%);
  border-bottom: var(--ab-line);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 18px;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 6.6vw, 68px);
  line-height: 1.03;
  letter-spacing: -0.04em;
  color: var(--ice);
  max-width: 15em;
}

.page-about .about-hl {
  background-image: linear-gradient(transparent 62%, rgba(255, 90, 31, 0.6) 62%);
  background-repeat: no-repeat;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 40em;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.78;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px 16px;
  border: var(--ab-line);
  background: rgba(19, 75, 115, 0.4);
  box-shadow: 6px 6px 0 var(--hard-shadow);
}

.page-about .about-stat__num {
  font-size: clamp(26px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--amber);
}

.page-about .about-stat__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-top: clamp(24px, 3.4vw, 40px);
  padding-top: 14px;
  border-top: var(--ab-line);
}

.page-about .about-index__now {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-index__now span {
  color: var(--cyan);
}

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

.page-about .about-index__list a {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--line);
  color: var(--ice);
  font-size: 13px;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .about-index__list a:hover {
  border-color: var(--ember);
  color: var(--ember);
}

.page-about .about-index__list a[aria-current] {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 媒体 ---------- */
.page-about .about-media {
  margin: 0;
}

.page-about .about-media__frame {
  position: relative;
  overflow: hidden;
  border: var(--ab-line);
  background: var(--sea-2);
  box-shadow: 10px 10px 0 var(--hard-shadow);
}

.page-about .about-media__frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-media__cap {
  margin: 12px 0 0;
  padding-left: 12px;
  border-left: 3px solid var(--line);
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 时间轴 ---------- */
.page-about .about-trail {
  padding: clamp(36px, 5vw, 68px) 0;
  background: var(--sea-1);
  border-bottom: var(--ab-line);
}

.page-about .about-banner {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-trail__head {
  max-width: 46em;
}

.page-about .about-trail__head p {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-years {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(22px, 3vw, 32px) 0 22px;
}

.page-about .about-years__link {
  padding: 6px 14px;
  border: 2px solid var(--line);
  background: rgba(4, 18, 31, 0.6);
  color: var(--ice);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-about .about-years__link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(40, 240, 194, 0.08);
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--lava), var(--amber) 48%, var(--cyan));
  opacity: 0.75;
}

.page-about .about-stage {
  position: relative;
  display: grid;
  grid-template-columns: minmax(58px, auto) minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-about .about-stage::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 14px;
  width: 10px;
  height: 10px;
  background: var(--sea-0);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-stage__year {
  display: inline-block;
  padding: 4px 12px;
  background: var(--amber);
  color: var(--sea-0);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
}

.page-about .about-stage--now .about-stage__year {
  background: var(--lava);
  color: var(--ice);
}

.page-about .about-stage__card {
  padding: 16px 18px 18px;
  border: var(--ab-line);
  border-left: 4px solid var(--lava);
  background: linear-gradient(150deg, rgba(19, 75, 115, 0.55), rgba(10, 39, 64, 0.92));
  box-shadow: 7px 7px 0 rgba(1, 10, 18, 0.72);
}

.page-about .about-stage__card p {
  margin: 0 0 10px;
  font-size: 15px;
}

.page-about .about-stage__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* ---------- 斜切分隔 ---------- */
.page-about .about-cut {
  height: 16px;
  background: linear-gradient(90deg, var(--lava) 0%, var(--ember) 34%, var(--amber) 58%, var(--cyan) 100%);
  transform: skewY(-1.4deg);
  transform-origin: left center;
  margin-bottom: -8px;
}

/* ---------- 内容生产 ---------- */
.page-about .about-craft {
  padding: clamp(40px, 5.4vw, 76px) 0;
  background: var(--sea-0);
}

.page-about .about-craft__grid {
  display: grid;
  gap: 30px;
  align-items: start;
}

.page-about .about-craft__text p {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-cadence {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cadence li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: baseline;
  padding: 6px 0 6px 14px;
  border-left: 3px solid var(--cyan);
  font-size: 14px;
  color: var(--ab-soft);
}

.page-about .about-cadence li:nth-child(2) {
  border-left-color: var(--amber);
}

.page-about .about-cadence li:nth-child(3) {
  border-left-color: var(--lava);
}

.page-about .about-cadence__num {
  font-size: 14px;
  font-weight: 700;
  color: var(--ice);
  white-space: nowrap;
}

/* ---------- 广东服务 ---------- */
.page-about .about-region {
  padding: clamp(40px, 5.4vw, 76px) 0;
  background: linear-gradient(160deg, var(--sea-0) 0%, #062033 55%, var(--sea-1) 100%);
  border-top: var(--ab-line);
  border-bottom: var(--ab-line);
}

.page-about .about-region__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-region__num {
  padding: 20px 18px;
  border: var(--ab-line);
  background: rgba(4, 18, 31, 0.62);
  box-shadow: 8px 8px 0 var(--hard-shadow);
}

.page-about .about-region__big {
  display: block;
  font-size: clamp(64px, 12vw, 116px);
  font-weight: 700;
  line-height: 0.84;
  letter-spacing: -0.05em;
  color: var(--lava);
}

.page-about .about-region__unit {
  display: block;
  margin-top: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-about .about-region__cap {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-region__text p {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-region__list {
  display: grid;
  gap: 10px;
  margin: 20px 0 22px;
  padding: 0;
  list-style: none;
}

.page-about .about-region__list li {
  padding: 10px 0 10px 14px;
  border-left: 3px solid var(--cyan);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ab-soft);
}

.page-about .about-region__list strong {
  color: var(--ice);
}

.page-about .about-region__media {
  max-width: 520px;
}

/* ---------- 团队与合作 ---------- */
.page-about .about-team {
  padding: clamp(40px, 5.4vw, 76px) 0;
  background: var(--sea-1);
  border-bottom: var(--ab-line);
}

.page-about .about-team__intro {
  max-width: 42em;
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-stack {
  display: flex;
  height: 52px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  border: var(--ab-line);
  box-shadow: 8px 8px 0 var(--hard-shadow);
}

.page-about .about-stack__seg {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  transition: filter 0.18s var(--ease);
}

.page-about .about-stack__seg:hover,
.page-about .about-stack__seg:focus-visible {
  filter: brightness(1.18);
}

.page-about .about-stack__seg--a {
  flex: 12 1 0;
  background: var(--lava);
  color: var(--ice);
}

.page-about .about-stack__seg--b {
  flex: 6 1 0;
  background: var(--amber);
  color: var(--sea-0);
}

.page-about .about-stack__seg--c {
  flex: 5 1 0;
  background: var(--cyan);
  color: var(--sea-0);
}

.page-about .about-stack__seg--d {
  flex: 5 1 0;
  background: var(--sea-2);
  color: var(--ice);
}

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

.page-about .about-roles {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-roles__item {
  display: grid;
  grid-template-columns: 14px minmax(0, 1fr);
  gap: 4px 10px;
  align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-roles__swatch {
  width: 12px;
  height: 12px;
  grid-row: span 2;
}

.page-about .about-roles__swatch--a {
  background: var(--lava);
}

.page-about .about-roles__swatch--b {
  background: var(--amber);
}

.page-about .about-roles__swatch--c {
  background: var(--cyan);
}

.page-about .about-roles__swatch--d {
  background: var(--sea-2);
}

.page-about .about-roles__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ice);
}

.page-about .about-roles__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-eco__wrap {
  margin-top: clamp(32px, 4vw, 52px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: var(--ab-line);
}

.page-about .about-eco__wrap p {
  max-width: 40em;
  margin: 12px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-eco {
  display: block;
  width: 100%;
  height: auto;
  max-width: 700px;
  margin: clamp(14px, 2vw, 24px) auto 0;
}

.page-about .about-eco text {
  text-anchor: middle;
  font-family: var(--font-body);
}

.page-about .about-eco__link {
  stroke: var(--line);
  stroke-width: 2;
  stroke-dasharray: 7 7;
}

.page-about .about-eco__node {
  cursor: pointer;
}

.page-about .about-eco__node circle {
  fill: rgba(19, 75, 115, 0.75);
  stroke: var(--line);
  stroke-width: 2;
  transition: stroke 0.18s var(--ease), fill 0.18s var(--ease);
}

.page-about .about-eco__node:hover circle,
.page-about .about-eco__node:focus-visible circle {
  stroke: var(--cyan);
  fill: rgba(19, 75, 115, 1);
}

.page-about .about-eco__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  fill: var(--amber);
}

.page-about .about-eco__lab {
  font-size: 12px;
  fill: var(--mist);
}

.page-about .about-eco__node:hover .about-eco__num,
.page-about .about-eco__node:focus-visible .about-eco__num {
  fill: var(--cyan);
}

.page-about .about-eco__core circle {
  fill: var(--lava);
  stroke: var(--sea-0);
  stroke-width: 3;
}

.page-about .about-eco__core-t {
  font-size: 15px;
  font-weight: 700;
  fill: var(--ice);
}

.page-about .about-eco__core-s {
  font-size: 11px;
  fill: rgba(4, 18, 31, 0.8);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: clamp(40px, 5.4vw, 76px) 0;
  background: var(--sea-0);
  border-bottom: var(--ab-line);
}

.page-about .about-next__intro {
  max-width: 44em;
  margin: 14px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-about .about-road {
  display: grid;
  gap: 14px;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-road__stop {
  padding: 18px 18px 20px;
  border: var(--ab-line);
  border-top: 4px solid var(--lava);
  background: rgba(19, 75, 115, 0.35);
}

.page-about .about-road__stop:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-about .about-road__stop:nth-child(3) {
  border-top-color: var(--amber);
}

.page-about .about-road__no {
  display: block;
  margin-bottom: 8px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-road__stop p {
  margin: 0;
  font-size: 14px;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 34px);
}

/* ---------- 结尾 ---------- */
.page-about .about-tail {
  padding: clamp(30px, 4vw, 52px) 0;
  background: linear-gradient(100deg, rgba(255, 90, 31, 0.2), rgba(40, 240, 194, 0.12));
}

.page-about .about-tail__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: center;
  justify-content: space-between;
}

.page-about .about-tail__lead {
  margin: 0;
  max-width: 34em;
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 500;
  color: var(--ice);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-stage {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 22px;
  }

  .page-about .about-roles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 26px;
  }

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

  .page-about .about-stack {
    height: 60px;
  }

  .page-about .about-stack__tip {
    display: block;
    position: absolute;
    left: 50%;
    bottom: calc(100% + 12px);
    z-index: 3;
    width: max-content;
    max-width: 220px;
    padding: 8px 10px;
    border: 2px solid var(--cyan);
    background: var(--sea-0);
    color: var(--ice);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.5;
    white-space: normal;
    text-align: left;
    opacity: 0;
    transform: translate(-50%, 6px);
    pointer-events: none;
    transition: opacity 0.18s var(--ease), transform 0.18s var(--ease);
  }

  .page-about .about-stack__seg:hover .about-stack__tip,
  .page-about .about-stack__seg:focus-visible .about-stack__tip {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.45fr 0.95fr;
    align-items: end;
    gap: 40px;
  }

  .page-about .about-craft__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 44px;
  }
}

@media (min-width: 1000px) {
  .page-about .about-region__grid {
    grid-template-columns: 220px minmax(0, 1fr) 320px;
    gap: 32px;
    align-items: start;
  }

  .page-about .about-region__media {
    max-width: none;
  }
}