/* ===== 品牌与团队页 ===== */

.page-about {
  --a-accent: #8a6d12;
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 48%, var(--ink) 100%);
  color: var(--on-dark);
  overflow-x: clip;
}

.page-about .about-crumb {
  padding-top: 1.75rem;
}

/* ===== 通用文字 ===== */

.page-about .about-h2 {
  font-family: var(--serif);
  font-size: clamp(1.55rem, 3.4vw, 2.4rem);
  line-height: 1.26;
  letter-spacing: -0.005em;
  font-weight: 600;
  color: var(--paper);
  margin: 0.65rem 0 0;
}

.page-about .about-lede {
  margin: 0.9rem 0 0;
  max-width: 46em;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--on-dark);
}

.page-about .about-sec-head {
  max-width: 48rem;
}

/* ===== 首屏 ===== */

.page-about .about-hero {
  padding: 1.25rem 0 clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 3.25rem);
}

.page-about .about-hero-copy h1 {
  font-family: var(--serif);
  font-size: clamp(2.1rem, 6vw, 4.1rem);
  line-height: 1.14;
  letter-spacing: -0.012em;
  font-weight: 600;
  color: var(--paper);
  margin: 0.85rem 0 0;
}

.page-about .about-hero-lede {
  margin: 1.15rem 0 0;
  max-width: 40em;
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.85;
  color: var(--on-dark);
}

.page-about .about-hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2.75rem;
  list-style: none;
  margin: 2rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line);
}

.page-about .about-hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 5.5rem;
}

.page-about .about-hero-facts .num {
  font-family: var(--mono);
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1;
  font-weight: 600;
  color: var(--gold);
}

.page-about .about-fact-label {
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--on-dark-soft);
}

.page-about .about-hero-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.page-about .about-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .about-hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.55;
  background:
    linear-gradient(90deg, rgba(201, 162, 39, 0.42) 0 1px, transparent 1px) 0 0 / 12.5% 100%,
    linear-gradient(180deg, rgba(201, 162, 39, 0.24) 0 1px, transparent 1px) 0 0 / 100% 25%;
  mix-blend-mode: overlay;
}

@media (min-width: 900px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }
}

/* ===== 我们在做什么 ===== */

.page-about .about-what {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.page-about .about-what-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

.page-about .about-what-rail {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.page-about .about-what-rail .annotation {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--gold);
}

.page-about .about-rail-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), rgba(201, 162, 39, 0));
}

.page-about .about-what-body p {
  margin: 1rem 0 0;
  max-width: 48em;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--on-dark);
}

.page-about .about-what-body .about-what-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.85rem 0 0;
}

@media (min-width: 860px) {
  .page-about .about-what-grid {
    grid-template-columns: 4.5rem minmax(0, 1fr);
    gap: 2rem;
  }

  .page-about .about-what-rail {
    flex-direction: column;
    align-items: flex-start;
    padding-top: 0.75rem;
  }

  .page-about .about-rail-line {
    flex: none;
    width: 1px;
    height: 5.5rem;
    background: linear-gradient(180deg, var(--gold), rgba(201, 162, 39, 0));
  }
}

/* ===== 团队分工 ===== */

.page-about .about-team {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
}

.page-about .about-team-figure {
  margin: clamp(1.75rem, 4vw, 2.75rem) 0 0;
  border: 1px solid var(--line);
  background: var(--ink-deep);
  overflow: hidden;
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-about .about-team-bands {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 2rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-about .about-band {
  position: relative;
  padding: 1.5rem 2.25rem 1.65rem 1.35rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--band, var(--gold));
  background: linear-gradient(180deg, rgba(28, 58, 87, 0.72), rgba(18, 40, 63, 0.42));
}

.page-about .about-band::after {
  content: "";
  position: absolute;
  top: 1.15rem;
  right: 1.1rem;
  width: 8px;
  height: 8px;
  background: var(--band, var(--gold));
  transform: rotate(45deg);
}

.page-about .about-band--edit {
  --band: var(--azurite);
}

.page-about .about-band--fe {
  --band: var(--clay);
}

.page-about .about-band--service {
  --band: var(--jade);
}

.page-about .about-band-title {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-band-text {
  margin: 0.8rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--on-dark);
}

@media (min-width: 820px) {
  .page-about .about-team-bands {
    grid-template-columns: 5fr 4fr 4fr;
    gap: 1.15rem;
  }
}

/* ===== 五年版本演进 ===== */

.page-about .about-versions {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
  background: radial-gradient(120% 90% at 10% 0%, rgba(201, 162, 39, 0.08), transparent 62%);
}

.page-about .about-timeline {
  position: relative;
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-timeline .accordion-head {
  border-bottom: 1px solid var(--line);
}

.page-about .about-timeline .accordion-trigger {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  width: 100%;
  padding: 1.15rem 0;
  text-align: left;
  background: none;
  border: 0;
  color: inherit;
  cursor: pointer;
}

.page-about .about-timeline .accordion-trigger:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-about .about-v-tag {
  flex: none;
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--gold);
  border: 1px solid var(--line-strong);
  padding: 0.22rem 0.55rem;
}

.page-about .about-v-title {
  flex: 1;
  font-family: var(--serif);
  font-size: clamp(1rem, 2vw, 1.125rem);
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-timeline .accordion-item[data-open] .about-v-title {
  color: var(--gold-soft);
}

.page-about .about-timeline .accordion-panel-inner {
  padding: 0.35rem 0 1.5rem;
}

.page-about .about-timeline .accordion-panel-inner p {
  margin: 0;
  max-width: 48em;
  font-size: 0.9375rem;
  line-height: 1.9;
  color: var(--on-dark);
}

.page-about .about-v-points {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
  max-width: 48em;
}

.page-about .about-v-points li {
  position: relative;
  padding-left: 1.35rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--on-dark-soft);
}

.page-about .about-v-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: 0.6rem;
  height: 1px;
  background: var(--gold);
}

@media (min-width: 768px) {
  .page-about .about-timeline {
    padding-left: 3rem;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    left: 1.15rem;
    top: 1.1rem;
    bottom: 1.1rem;
    width: 2px;
    background: linear-gradient(180deg, rgba(201, 162, 39, 0.75), rgba(201, 162, 39, 0.06));
  }

  .page-about .about-timeline .accordion-item {
    position: relative;
  }

  .page-about .about-timeline .accordion-item::before {
    content: "";
    position: absolute;
    left: calc(-1.85rem - 5px);
    top: 1.55rem;
    width: 10px;
    height: 10px;
    background: var(--ink);
    border: 1.5px solid var(--gold);
    transform: rotate(45deg);
    z-index: 1;
  }

  .page-about .about-timeline .accordion-item[data-open]::before {
    background: var(--gold);
  }
}

/* ===== 内容维护机制 ===== */

.page-about .about-upkeep {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
}

.page-about .paper-panel {
  --a-accent: #8a6d12;
  color: var(--text);
}

.page-about .about-upkeep-panel {
  padding: clamp(1.75rem, 4vw, 3.25rem);
}

.page-about .paper-panel .about-h2 {
  color: var(--text);
}

.page-about .paper-panel .about-lede {
  color: rgba(18, 22, 28, 0.74);
}

.page-about .about-flow {
  list-style: none;
  counter-reset: flow;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.35rem;
}

.page-about .about-flow li {
  counter-increment: flow;
  padding-top: 1rem;
  border-top: 2px solid rgba(18, 22, 28, 0.16);
}

.page-about .about-flow li::before {
  content: "0" counter(flow);
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--a-accent);
}

.page-about .about-flow h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .about-flow p {
  margin: 0.5rem 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: rgba(18, 22, 28, 0.72);
}

.page-about .about-upkeep-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.15rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid rgba(18, 22, 28, 0.16);
}

.page-about .about-upkeep-stats > div {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-about .about-upkeep-stats .num {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  line-height: 1;
  font-weight: 600;
  color: var(--a-accent);
}

.page-about .about-upkeep-stats span:last-child {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: rgba(18, 22, 28, 0.62);
}

@media (min-width: 640px) {
  .page-about .about-upkeep-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem 1.75rem;
  }
}

@media (min-width: 1080px) {
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ===== 云南本地服务能力 ===== */

.page-about .about-yunnan {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
}

.page-about .about-yunnan-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-about .about-yunnan-list {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-yunnan-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--on-dark);
}

.page-about .about-yunnan-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.5rem;
  height: 0.5rem;
  border: 1.5px solid var(--jade);
  transform: rotate(45deg);
}

.page-about .about-yunnan-links {
  margin: 1.75rem 0 0;
}

.page-about .about-yunnan-media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-yunnan-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-about .about-yunnan-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

/* ===== 协作生态 ===== */

.page-about .about-partners {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0;
}

.page-about .about-partner-list {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-partner {
  background: var(--ink-deep);
  padding: 1.5rem 1.35rem 1.65rem;
}

.page-about .about-partner-tag {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--line-strong);
  color: var(--gold-soft);
}

.page-about .about-partner-title {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--paper);
}

.page-about .about-partner p {
  margin: 0.6rem 0 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--on-dark-soft);
}

.page-about .about-partner:nth-child(odd) {
  background: var(--ink);
}

@media (min-width: 720px) {
  .page-about .about-partner-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .page-about .about-partner-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ===== 服务原则 ===== */

.page-about .about-promise {
  padding: clamp(2.75rem, 7vw, 5.5rem) 0 clamp(3.5rem, 8vw, 6rem);
}

.page-about .about-promise-panel {
  padding: clamp(1.75rem, 4vw, 3.25rem);
}

.page-about .about-promise-list {
  list-style: none;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.35rem;
}

.page-about .about-promise-list li {
  padding-top: 1rem;
  border-top: 2px solid rgba(18, 22, 28, 0.16);
}

.page-about .about-promise-list h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .about-promise-list p {
  margin: 0.55rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: rgba(18, 22, 28, 0.72);
}

.page-about .about-promise-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: clamp(1.75rem, 4vw, 2.5rem);
  padding-top: clamp(1.25rem, 3vw, 1.75rem);
  border-top: 1px solid rgba(18, 22, 28, 0.16);
}

.page-about .paper-panel .btn-ghost {
  border-color: rgba(18, 22, 28, 0.3);
  color: var(--text);
}

.page-about .paper-panel .btn-ghost:hover,
.page-about .paper-panel .btn-ghost:focus-visible {
  border-color: var(--text);
  background: rgba(18, 22, 28, 0.07);
  color: var(--text);
}

@media (min-width: 800px) {
  .page-about .about-promise-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }
}

/* ===== 动效偏好 ===== */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero-media::before {
    opacity: 0.3;
  }
}
</main>