.page-about {
  --about-line: rgba(184, 217, 212, 0.16);
  --about-line-strong: rgba(184, 217, 212, 0.34);
  --about-bg-step1: #0B2830;
  --about-bg-step2: #14353D;
  --about-bg-step3: #0F323A;
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(155deg, var(--bg-primary) 0%, var(--about-bg-step1) 52%, #123A42 100%);
  padding: calc(var(--header-h) + var(--topbar-h) + clamp(2rem, 5vw, 4rem)) 0 clamp(3rem, 7vw, 6rem);
}

.page-about .about-hero::before {
  content: "8";
  position: absolute;
  right: -0.05em;
  top: -0.08em;
  font-family: var(--font-display);
  font-size: clamp(10rem, 26vw, 22rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(200, 240, 75, 0.14);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: -8%;
  bottom: 16%;
  width: 116%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--accent-green) 30%, var(--accent-orange) 72%, transparent 100%);
  transform: rotate(-7deg);
  opacity: 0.75;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero .breadcrumbs {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  margin: 0 0 1.25rem;
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent-green);
}

.page-about .about-hero__kicker::before {
  content: "";
  width: 2.6rem;
  height: 2px;
  background: var(--accent-orange);
  display: inline-block;
  transform: skewX(-38deg);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 200;
  font-size: clamp(3rem, 9vw, 6.2rem);
  line-height: 1.02;
  letter-spacing: 0.005em;
  color: var(--text-light);
}

.page-about .about-hero__title-sub {
  display: block;
  margin-top: 0.65em;
  font-size: 0.42em;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  line-height: 1.4;
}

.page-about .about-hero__lead {
  max-width: 42rem;
  margin: 1.75rem 0 0;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.9;
  color: var(--text-dim);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__meta-item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  font-size: var(--fs-micro);
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-about .about-hero__meta-item strong {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--accent-green);
}

.page-about .about-hero__aside {
  margin-top: 1rem;
}

.page-about .about-hero__index-title {
  margin: 0 0 0.75rem;
  font-size: var(--fs-micro);
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-orange);
}

.page-about .about-hero__index {
  display: grid;
  gap: 0.25rem;
  justify-items: start;
  padding: 1.5rem 1.75rem;
  background: rgba(29, 59, 64, 0.5);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  backdrop-filter: blur(8px);
}

.page-about .about-hero__index a {
  display: inline-block;
  padding: 0.35rem 0;
  color: var(--text-dim);
  font-size: 0.92rem;
  text-decoration: none;
  transition: color var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.page-about .about-hero__index a:hover {
  color: var(--accent-green);
  transform: translateX(5px);
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-about .about-section-head__index {
  position: relative;
  padding-left: 1.25rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 2.4;
  color: var(--accent-orange);
}

.page-about .about-section-head__index::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.7rem;
  height: 2px;
  background: var(--accent-green);
  transform: skewX(-45deg);
}

.page-about .about-section-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 2.6rem);
  line-height: 1.25;
  color: var(--text-light);
}

.page-about .about-prose p {
  margin: 0 0 1.25rem;
  color: var(--text-dim);
  line-height: 1.9;
  font-size: 1rem;
}

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

.page-about .about-origin {
  background: linear-gradient(180deg, #0B232A 0%, var(--about-bg-step1) 100%);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-about .about-values {
  display: grid;
  gap: 1rem;
  margin-top: 2.5rem;
}

.page-about .about-value-card {
  position: relative;
  padding: 1.5rem 1.75rem;
  background: rgba(29, 59, 64, 0.55);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--accent-green);
  border-radius: var(--radius-md);
  transition: transform var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-value-card:hover {
  transform: translateX(6px);
  border-left-color: var(--accent-orange);
  border-color: var(--about-line-strong);
}

.page-about .about-value-card__num {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(200, 240, 75, 0.45);
  pointer-events: none;
}

.page-about .about-value-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-light);
}

.page-about .about-value-card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-migration {
  background: linear-gradient(180deg, var(--about-bg-step1) 0%, var(--about-bg-step2) 55%, #17404A 100%);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-about .about-migration__layout {
  display: grid;
  gap: 2.5rem;
  margin-top: 2rem;
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-green) 0%, var(--accent-orange) 100%);
  opacity: 0.5;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 2.5rem;
  padding-bottom: 1.5rem;
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: 3px;
  top: 0.35rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 0 4px rgba(200, 240, 75, 0.16);
  transition: transform var(--speed) var(--ease), background var(--speed) var(--ease);
  z-index: 1;
}

.page-about .about-timeline__item:hover .about-timeline__dot {
  transform: scale(1.3);
  background: var(--accent-orange);
}

.page-about .about-timeline__card {
  padding: 1.1rem 1.35rem;
  background: rgba(29, 59, 64, 0.6);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__card {
  border-color: rgba(200, 240, 75, 0.3);
  background: rgba(29, 59, 64, 0.85);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-light);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text-dim);
}

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

.page-about .about-migration__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line);
  background: var(--bg-card);
  box-shadow: 0 18px 40px rgba(10, 31, 36, 0.35);
}

.page-about .about-migration__figure figcaption {
  margin-top: 0.7rem;
  font-size: var(--fs-micro);
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-align: right;
}

.page-about .about-migration__stats {
  display: grid;
  gap: 1rem;
  margin-top: 2.75rem;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.35rem 1.5rem;
  background: rgba(200, 240, 75, 0.06);
  border: 1px solid rgba(200, 240, 75, 0.2);
  border-radius: var(--radius-md);
  transition: transform var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-about .about-stat:hover {
  transform: translateY(-4px);
  background: rgba(200, 240, 75, 0.1);
}

.page-about .about-stat__value {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1.1;
  color: var(--accent-green);
}

.page-about .about-stat__label {
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

.page-about .about-yunnan {
  position: relative;
  background: linear-gradient(160deg, #17404A 0%, var(--about-bg-step3) 45%, #0C2831 100%);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-about .about-yunnan::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 38%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-orange));
}

.page-about .about-yunnan__grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 1.5rem;
}

.page-about .about-yunnan__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.75rem;
}

.page-about .about-yunnan__more {
  display: inline-block;
  margin-top: 1.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--accent-green);
  text-decoration: none;
  border-bottom: 2px solid rgba(200, 240, 75, 0.35);
  padding-bottom: 0.15rem;
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-yunnan__more:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

.page-about .about-yunnan__media {
  display: grid;
  gap: 1.5rem;
}

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

.page-about .about-yunnan__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line);
  background: var(--bg-card);
}

.page-about .about-yunnan__figure figcaption {
  margin-top: 0.6rem;
  font-size: var(--fs-micro);
  color: var(--text-dim);
}

.page-about .about-yunnan__map {
  display: block;
  width: 100%;
  height: auto;
  padding: 1rem;
  background: rgba(10, 31, 36, 0.45);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
}

.page-about .about-yunnan__map-shape {
  fill: rgba(29, 59, 64, 0.7);
  stroke: rgba(200, 240, 75, 0.4);
  stroke-width: 1.2;
  stroke-linejoin: round;
}

.page-about .about-yunnan__map-city {
  fill: var(--accent-green);
}

.page-about .about-yunnan__map-city--orange {
  fill: var(--accent-orange);
}

.page-about .about-yunnan__map-label {
  fill: var(--text-dim);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.page-about .about-team {
  background: linear-gradient(180deg, var(--about-bg-step3) 0%, #0C2831 45%, var(--bg-primary) 100%);
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.page-about .about-team__groups {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-team__group {
  position: relative;
  padding: 1.4rem 1.5rem 1.4rem 1.75rem;
  background: rgba(29, 59, 64, 0.65);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-md);
  transition: border-color var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.page-about .about-team__group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 3px;
  border-radius: 3px 0 0 3px;
  background: linear-gradient(180deg, var(--accent-green), var(--accent-orange));
  opacity: 0.75;
}

.page-about .about-team__group:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 122, 0, 0.35);
}

.page-about .about-team__group h3 {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0 0 0.45rem;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-light);
}

.page-about .about-team__group h3::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--about-line);
}

.page-about .about-team__group p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-team__principles {
  margin-top: 2rem;
  padding: 1.5rem 1.75rem;
  background: rgba(200, 240, 75, 0.05);
  border-left: 3px solid var(--accent-green);
  border-radius: var(--radius-md);
}

.page-about .about-team__principles h3 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-light);
}

.page-about .about-team__principles ul {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__principles li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-dim);
}

.page-about .about-team__principles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 0.55rem;
  height: 2px;
  background: var(--accent-green);
  transform: skewX(-45deg);
}

.page-about .about-team__principles a {
  color: var(--accent-green);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 240, 75, 0.35);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-team__principles a:hover {
  color: var(--accent-orange);
  border-color: var(--accent-orange);
}

.page-about .about-team__figure {
  margin: 2.25rem 0 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line);
  background: var(--bg-card);
  box-shadow: 0 18px 45px rgba(10, 31, 36, 0.4);
}

.page-about .about-team__figure figcaption {
  margin-top: 0.65rem;
  font-size: var(--fs-micro);
  color: var(--text-dim);
  text-align: right;
}

.page-about .about-cta {
  background: var(--bg-primary);
  padding: clamp(3rem, 6vw, 5rem) 0;
  border-top: 1px solid var(--about-line);
}

.page-about .about-cta__inner {
  text-align: center;
}

.page-about .about-cta__inner h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  color: var(--text-light);
}

.page-about .about-cta__inner p {
  max-width: 34rem;
  margin: 0 auto 1.9rem;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.8rem;
}

.page-about .about-origin,
.page-about .about-migration,
.page-about .about-yunnan,
.page-about .about-team {
  scroll-margin-top: calc(var(--header-h) + var(--topbar-h) + 1rem);
}

@media (min-width: 640px) {
  .page-about .about-migration__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 680px) {
  .page-about .about-team__groups {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 700px) {
  .page-about .about-values {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.35fr 0.65fr;
    align-items: end;
    gap: 3rem;
  }

  .page-about .about-hero__aside {
    margin-top: 0;
  }
}

@media (min-width: 960px) {
  .page-about .about-yunnan__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
    align-items: center;
  }
}

@media (min-width: 980px) {
  .page-about .about-migration__layout {
    grid-template-columns: 1.25fr 0.85fr;
    align-items: start;
    gap: 3.5rem;
  }
}