/* ===== 页面作用域：page-about ===== */

/* ---- 通用章节头部 ---- */
.page-about .section-head {
  position: relative;
  max-width: 720px;
  margin-bottom: 44px;
  padding-top: 24px;
}
.page-about .section-head::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 2px;
  background: var(--c-gold);
}
.page-about .section-head h2 {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.1;
  margin: 8px 0 16px;
  color: var(--c-white);
}
.page-about .section-head p {
  color: var(--c-gray-mid);
  margin: 0;
}

/* ---- 1. 页面头部 ---- */
.page-about .about-hero {
  position: relative;
  padding-top: calc(var(--header-h) + 96px);
  padding-bottom: calc(var(--header-h) + 40px);
  overflow: hidden;
  color: var(--c-white);
  border-bottom: 1px solid var(--border-thin);
  background:
    linear-gradient(180deg, rgba(11, 29, 42, 0.2), var(--c-night-deep) 92%),
    radial-gradient(circle at 72% 22%, rgba(27, 79, 114, 0.7), transparent 460px),
    radial-gradient(circle at 12% 78%, rgba(62, 155, 79, 0.16), transparent 320px),
    var(--c-night-deep);
}
.page-about .about-hero::after {
  content: "GEN 05";
  position: absolute;
  right: 16px;
  top: calc(var(--header-h) + 48px);
  z-index: 0;
  font-family: var(--font-mono);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 700;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(212, 175, 55, 0.16);
  pointer-events: none;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin-top: 36px;
  padding-left: 28px;
  border-left: 2px solid var(--c-gold);
}
.page-about .about-hero h1 {
  margin: 12px 0 16px;
  font-family: var(--font-title);
  font-size: clamp(2.3rem, 6vw, 4.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--c-white);
}
.page-about .about-hero__subtitle {
  font-family: var(--font-quote);
  font-size: clamp(1rem, 2vw, 1.3rem);
  color: var(--c-gray-light);
  margin: 0 0 16px;
}
.page-about .about-hero__lead {
  max-width: 720px;
  margin: 0;
  color: var(--c-gray-mid);
  line-height: 1.8;
}
.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 32px;
}
.page-about .about-hero__meta-item {
  position: relative;
  padding-left: 14px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--c-gray-light);
}
.page-about .about-hero__meta-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 6px;
  background: var(--c-green);
  transform: translateY(-50%) rotate(45deg);
}
.page-about .about-hero__speed {
  position: absolute;
  right: -40px;
  bottom: -20px;
  width: 120px;
  height: 240px;
  opacity: 0.14;
  background: repeating-linear-gradient(-55deg, transparent 0 14px, var(--c-white) 14px 15px);
  transform: rotate(-6deg);
  pointer-events: none;
}

/* ---- 2. 品牌使命与初衷 ---- */
.page-about .about-mission {
  background:
    radial-gradient(1px 1px at 30% 40%, rgba(62, 155, 79, 0.12), transparent 100%),
    radial-gradient(1px 1px at 68% 24%, rgba(62, 155, 79, 0.1), transparent 100%),
    radial-gradient(1.5px 1.5px at 46% 70%, rgba(212, 175, 55, 0.07), transparent 100%),
    var(--c-night-deep);
}
.page-about .about-mission__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .about-mission__content h2 {
  font-family: var(--font-title);
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  line-height: 1.15;
  margin: 8px 0 20px;
  color: var(--c-white);
}
.page-about .about-mission__content .prose p {
  color: var(--c-gray-light);
  line-height: 1.8;
  margin: 0 0 16px;
}
.page-about .about-mission__facts {
  display: grid;
  gap: 16px;
  margin-top: 28px;
  border-top: 1px solid var(--border-thin);
  padding-top: 20px;
}
.page-about .about-mission__fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .about-mission__fact-value {
  color: var(--c-white);
  font-weight: 600;
}
.page-about .about-mission__media {
  position: relative;
  margin: 0;
}
.page-about .about-mission__media::before {
  content: "";
  position: absolute;
  left: 14px;
  top: -10px;
  width: 64px;
  height: 64px;
  border-left: 2px solid var(--c-gold);
  border-top: 2px solid var(--c-gold);
}
.page-about .about-mission__media img,
.page-about .about-team__media img,
.page-about .about-coverage__media img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--border-thin);
  box-shadow: var(--shadow-panel);
}

/* ---- 3. 发展历程时间线 ---- */
.page-about .about-journey {
  border-top: 1px solid var(--border-thin);
  border-bottom: 1px solid var(--border-thin);
}
.page-about .about-timeline {
  position: relative;
  padding-left: 32px;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  border-left: 2px dashed rgba(62, 155, 79, 0.45);
}
.page-about .about-timeline__item {
  position: relative;
  margin-bottom: 48px;
}
.page-about .about-timeline__item:last-child {
  margin-bottom: 0;
}
.page-about .about-timeline__year {
  position: absolute;
  left: 8px;
  top: 28px;
  z-index: 1;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  background: var(--c-charcoal);
  border: 1.5px solid var(--c-gold);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.06);
  transform: translateX(-50%) rotate(45deg);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.66rem;
  color: var(--c-gold);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}
.page-about .about-timeline__year span {
  display: inline-block;
  transform: rotate(-45deg);
}
.page-about .about-timeline__year:hover {
  background: var(--c-gold);
  color: var(--c-charcoal);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.18);
}
.page-about .about-timeline__card {
  position: relative;
  padding: 28px 28px 24px 32px;
  background: linear-gradient(135deg, rgba(26, 26, 26, 0.9), rgba(27, 79, 114, 0.18));
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.page-about .about-timeline__card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  width: 40px;
  height: 2px;
  background: var(--c-gold);
}
.page-about .about-timeline__year:hover + .about-timeline__card {
  border-color: rgba(212, 175, 55, 0.5);
  transform: translateY(-4px);
  background: linear-gradient(135deg, rgba(26, 26, 26, 0.95), rgba(29, 62, 47, 0.35));
}
.page-about .about-timeline__code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 10px;
}
.page-about .about-timeline__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 1.6rem;
  color: var(--c-white);
}
.page-about .about-timeline__card p {
  margin: 0;
  line-height: 1.7;
  font-size: 0.95rem;
  color: var(--c-gray-light);
}

/* ---- 4. 团队与规模 ---- */
.page-about .about-team {
  background:
    radial-gradient(1px 1px at 20% 30%, rgba(62, 155, 79, 0.12), transparent 100%),
    radial-gradient(1px 1px at 65% 18%, rgba(62, 155, 79, 0.1), transparent 100%),
    radial-gradient(1.5px 1.5px at 43% 72%, rgba(212, 175, 55, 0.06), transparent 100%),
    radial-gradient(1px 1px at 84% 48%, rgba(197, 232, 42, 0.08), transparent 100%),
    var(--c-night-deep);
}
.page-about .about-team__layout {
  display: grid;
  gap: 36px;
}
.page-about .about-team__panels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.page-about .about-team__panel {
  padding: 28px 24px;
  background: linear-gradient(160deg, rgba(27, 79, 114, 0.2), rgba(11, 29, 42, 0.7));
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.page-about .about-team__panel:hover {
  border-color: rgba(62, 155, 79, 0.65);
  background: linear-gradient(160deg, rgba(29, 62, 47, 0.4), rgba(11, 29, 42, 0.85));
  transform: translateY(-2px);
}
.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 7vw, 5.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-green);
  text-shadow: 0 0 32px rgba(62, 155, 79, 0.3);
  -webkit-text-stroke: 1px rgba(62, 155, 79, 0.45);
  transition: color var(--transition), text-shadow var(--transition);
}
.page-about .about-team__num:hover {
  color: var(--c-gold);
  text-shadow: 0 0 40px rgba(212, 175, 55, 0.35);
}
.page-about .about-team__panel h3 {
  margin: 16px 0 8px;
  font-size: 1.1rem;
  color: var(--c-white);
}
.page-about .about-team__panel p {
  margin: 0;
  color: var(--c-gray-mid);
  line-height: 1.7;
  font-size: 0.92rem;
}
.page-about .about-team__total {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  background: var(--c-charcoal);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: var(--radius);
}
.page-about .about-team__total-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
}
.page-about .about-team__total-label {
  color: var(--c-gray-mid);
  font-size: 0.85rem;
}
.page-about .about-team__total p {
  margin: 0;
  color: var(--c-gray-light);
  line-height: 1.6;
  font-size: 0.92rem;
}
.page-about .about-team__media {
  margin: 0;
}

/* ---- 5. 数据能力与覆盖 ---- */
.page-about .about-coverage {
  border-top: 1px solid var(--border-thin);
  border-bottom: 1px solid var(--border-thin);
}
.page-about .about-coverage__layout {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .about-coverage__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .about-coverage__stat {
  position: relative;
  overflow: hidden;
  padding: 24px;
  background: linear-gradient(160deg, rgba(29, 62, 47, 0.7), rgba(11, 29, 42, 0.75));
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.page-about .about-coverage__stat::after {
  content: "";
  position: absolute;
  right: -22px;
  bottom: -22px;
  width: 80px;
  height: 80px;
  border: 1px solid rgba(62, 155, 79, 0.2);
  transform: rotate(45deg);
}
.page-about .about-coverage__stat:hover {
  border-color: rgba(197, 232, 42, 0.5);
  background: linear-gradient(160deg, rgba(29, 62, 47, 0.85), rgba(11, 29, 42, 0.85));
  transform: translateY(-2px);
}
.page-about .about-coverage__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--c-gold);
  margin-bottom: 8px;
}
.page-about .about-coverage__stat p {
  margin: 8px 0 0;
  color: var(--c-gray-mid);
  font-size: 0.9rem;
}
.page-about .about-coverage__media {
  margin: 0;
}
.page-about .about-coverage__note {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-top: 36px;
  padding: 20px 24px;
  background: rgba(29, 62, 47, 0.35);
  border-left: 3px solid var(--c-lime);
}
.page-about .about-coverage__note p {
  margin: 0;
  color: var(--c-gray-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ---- 6. 资质与合作伙伴 ---- */
.page-about .about-credential__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.page-about .about-credential__cert h3 {
  margin: 0 0 20px;
  font-size: 1.2rem;
  color: var(--c-white);
}
.page-about .about-cert__list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .about-cert__list li {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
  transition: border-color var(--transition), transform var(--transition), background var(--transition);
}
.page-about .about-cert__list li:hover {
  border-color: rgba(212, 175, 55, 0.55);
  background: rgba(29, 62, 47, 0.3);
  transform: translateX(6px);
}
.page-about .about-cert__list strong {
  display: block;
  color: var(--c-white);
  margin-bottom: 6px;
  font-size: 0.95rem;
}
.page-about .about-cert__list p {
  margin: 0;
  color: var(--c-gray-mid);
  line-height: 1.6;
  font-size: 0.88rem;
}
.page-about .about-credential__note {
  margin: 0;
  color: var(--c-gray-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ---- 合作生态网络图 ---- */
.page-about .about-net {
  position: relative;
  min-height: 380px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background:
    radial-gradient(circle, rgba(62, 155, 79, 0.1), transparent 60%),
    linear-gradient(140deg, var(--c-green-deep), var(--c-night-deep));
  border: 1px solid var(--border-thin);
  border-radius: var(--radius);
}
.page-about .about-net__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.page-about .about-net__lines line {
  stroke: rgba(62, 155, 79, 0.4);
  stroke-width: 1;
  stroke-dasharray: 3 6;
}
.page-about .about-net__hub {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: 104px;
  height: 104px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: var(--c-charcoal);
  border: 1px solid var(--c-gold);
  box-shadow: 0 0 36px rgba(212, 175, 55, 0.24);
  transform: translate(-50%, -50%) rotate(45deg);
}
.page-about .about-net__hub > * {
  transform: rotate(-45deg);
  text-align: center;
}
.page-about .about-net__hub span {
  color: var(--c-gray-mid);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}
.page-about .about-net__hub strong {
  color: var(--c-gold);
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.page-about .about-net__node {
  position: absolute;
  z-index: 2;
  max-width: 130px;
  padding: 8px 12px;
  background: var(--c-night-deep);
  border: 1px solid rgba(62, 155, 79, 0.5);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  color: var(--c-white);
  font-size: 0.75rem;
  line-height: 1.3;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}
.page-about .about-net__node strong {
  display: block;
  color: var(--c-lime);
  font-family: var(--font-mono);
  font-size: 1rem;
}
.page-about .about-net__node:hover {
  border-color: var(--c-gold);
  background: var(--c-green-deep);
  transform: translateY(-2px);
}
.page-about .about-net__node--svc {
  left: 50%;
  top: 4%;
  transform: translateX(-50%);
}
.page-about .about-net__node--svc:hover {
  transform: translateX(-50%) translateY(-2px);
}
.page-about .about-net__node--youth {
  right: 2%;
  top: 20%;
}
.page-about .about-net__node--ana {
  right: 4%;
  top: 78%;
}
.page-about .about-net__node--edit {
  left: 3%;
  top: 14%;
}
.page-about .about-net__node--user {
  left: 6%;
  top: 80%;
}

/* ---- 7. 平台承诺 ---- */
.page-about .about-trust__frame {
  padding: 40px 32px;
  background: linear-gradient(135deg, rgba(29, 62, 47, 0.5), rgba(11, 29, 42, 0.85));
}
.page-about .about-trust__frame h2 {
  margin: 8px 0 16px;
  font-family: var(--font-title);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  color: var(--c-white);
}
.page-about .about-trust__frame p {
  max-width: 660px;
  margin: 0;
  color: var(--c-gray-light);
  line-height: 1.8;
}
.page-about .about-trust__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 28px;
}

/* ---- 波浪分隔颜色 -- */
.page-about .wave-divider--night-to-green {
  --wave-above: var(--c-night-deep);
  --wave-below: var(--c-green-deep);
}
.page-about .wave-divider--green-to-night {
  --wave-above: var(--c-green-deep);
  --wave-below: var(--c-night-deep);
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-about .about-mission__facts {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .about-team__panels {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .about-team__total {
    grid-column: span 2;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .page-about .about-coverage__stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 860px) {
  .page-about .about-mission__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
  }
}

@media (min-width: 900px) {
  .page-about .about-credential__grid {
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
  }
}

@media (min-width: 940px) {
  .page-about .about-timeline {
    padding-left: 0;
  }
  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 1fr 72px 1fr;
    gap: 0 28px;
    align-items: center;
    margin-bottom: 44px;
  }
  .page-about .about-timeline__year {
    position: static;
    left: auto;
    top: auto;
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    transform: rotate(45deg);
  }
  .page-about .about-timeline__card {
    grid-column: 1;
    grid-row: 1;
  }
  .page-about .about-timeline__item--flip .about-timeline__card {
    grid-column: 3;
  }
}

@media (min-width: 1024px) {
  .page-about .about-team__layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: stretch;
  }
  .page-about .about-team__media {
    margin: 0;
  }
  .page-about .about-team__media img {
    height: 100%;
    object-fit: cover;
  }
  .page-about .about-coverage__layout {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}