/* ============ 品牌概况页 · page-about ============ */

.page-about {
  --tl-1: #1E2A4A;
  --tl-2: #21536A;
  --tl-3: #247C82;
  --tl-4: #2AA79E;
  --tl-5: #33C9BC;
  --tl-6: #3EE7D1;
  --about-body: rgba(243, 238, 228, .78);
  --about-dim: rgba(243, 238, 228, .62);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding-top: clamp(14px, 3vw, 32px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -12%;
  right: -12%;
  width: min(720px, 82vw);
  height: min(520px, 62vw);
  background: linear-gradient(142deg, rgba(62, 231, 209, .13), rgba(6, 11, 26, 0) 64%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-hero h1 {
  margin: 12px 0 20px;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: .02em;
  color: var(--cream);
}

.page-about .about-hero .lede {
  margin: 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.82;
  color: var(--about-body);
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3.4vw, 32px);
}

.page-about .about-hero-panel {
  padding: clamp(20px, 3vw, 30px);
  display: grid;
  gap: 0;
}

.page-about .about-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px dashed var(--line-blue);
  transition: border-color var(--dur) var(--ease);
}

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

.page-about .about-stat:first-child {
  padding-top: 0;
}

.page-about .about-stat:hover {
  border-color: var(--cyan);
}

.page-about .about-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--amber);
}

.page-about .about-stat-label {
  font-size: 13px;
  letter-spacing: .07em;
  color: var(--slate);
  text-align: right;
}

@media (min-width: 920px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
  }
}

/* ---------- 通用章节微调 ---------- */

.page-about .about-timeline .section-head,
.page-about .about-source .section-head,
.page-about .about-team .section-head,
.page-about .about-reach .section-head,
.page-about .about-trust .section-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

/* ---------- 时间轴 ---------- */

.page-about .about-figure {
  margin: 0 0 clamp(30px, 5vw, 54px);
}

.page-about .about-figure .figure-frame {
  aspect-ratio: 8 / 3;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-blue);
  background: var(--hull-blue);
}

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

.page-about .about-figure .figure-caption {
  margin-top: 12px;
}

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

.page-about .tl-list::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 12px;
  bottom: 30px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--tl-1), var(--tl-3) 42%, var(--tl-6));
}

.page-about .tl-node {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 38px) 44px;
}

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

.page-about .tl-dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--space-blue);
  border: 2px solid var(--line-blue);
  transition: border-color var(--dur) var(--ease),
              background-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-about .tl-node:nth-child(1) .tl-dot { border-color: var(--tl-1); }
.page-about .tl-node:nth-child(2) .tl-dot { border-color: var(--tl-2); }
.page-about .tl-node:nth-child(3) .tl-dot { border-color: var(--tl-3); }
.page-about .tl-node:nth-child(4) .tl-dot { border-color: var(--tl-4); }
.page-about .tl-node:nth-child(5) .tl-dot { border-color: var(--tl-5); }
.page-about .tl-node:nth-child(6) .tl-dot {
  border-color: var(--tl-6);
  box-shadow: 0 0 0 5px rgba(62, 231, 209, .12);
}

.page-about .tl-node:hover .tl-dot {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 6px rgba(62, 231, 209, .16);
}

.page-about .tl-node:hover .tl-title {
  color: var(--cyan-glow);
}

.page-about .tl-stage {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-about .tl-node:last-child .tl-stage {
  color: var(--cyan);
}

.page-about .tl-title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.42;
  letter-spacing: .01em;
  color: var(--cream);
  transition: color var(--dur) var(--ease);
}

.page-about .tl-text {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-body);
}

@media (min-width: 860px) {
  .page-about .tl-node {
    padding-left: 64px;
    padding-bottom: clamp(30px, 3.4vw, 44px);
  }
  .page-about .tl-dot {
    left: 0;
    width: 26px;
    height: 26px;
  }
  .page-about .tl-list::before {
    left: 12px;
  }
}

/* ---------- 数据来源 ---------- */

.page-about .about-source-grid {
  align-items: start;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-source-lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--about-body);
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-about .about-flow li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line-blue);
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-flow li:last-child {
  border-bottom: 1px solid var(--line-blue);
}

.page-about .about-flow li:hover {
  border-top-color: var(--cyan);
}

.page-about .about-flow-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-about .about-flow-title {
  margin: 0 0 6px;
  font-size: 15px;
  line-height: 1.45;
  color: var(--cream);
}

.page-about .about-flow p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-dim);
}

.page-about .about-source-figure {
  margin: 0;
}

.page-about .about-source-figure .figure-frame {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-blue);
  background:
    repeating-linear-gradient(0deg, rgba(110, 122, 143, .12) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(110, 122, 143, .12) 0 1px, transparent 1px 28px),
    var(--hull-blue);
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-about .about-source-figure:hover .figure-frame {
  border-color: var(--cyan);
  box-shadow: 0 22px 48px -34px rgba(62, 231, 209, .8);
}

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

.page-about .about-source-figure .figure-caption {
  margin-top: 12px;
}

/* ---------- 团队 ---------- */

.page-about .about-team-grid {
  gap: clamp(16px, 2.6vw, 24px);
}

.page-about .about-team-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 3vw, 28px);
  transition: border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.page-about .about-team-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-about .about-team-tag {
  align-self: flex-start;
  padding: 5px 13px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-blue);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan-glow);
}

.page-about .about-team-num {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 4.6vw, 46px);
  line-height: 1;
  color: var(--amber);
}

.page-about .about-team-num span {
  margin-left: 6px;
  font-size: .42em;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .about-team-desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
}

.page-about .about-team-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-dim);
}

.page-about .about-team-list li {
  position: relative;
  padding-left: 16px;
}

.page-about .about-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line-blue);
}

/* ---------- 覆盖 ---------- */

.page-about .about-night-figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line-blue);
  border-bottom: 1px solid var(--line-blue);
  background: var(--hull-blue);
  overflow: hidden;
}

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

.page-about .about-reach-head {
  margin-bottom: clamp(22px, 3.4vw, 34px);
}

.page-about .about-reach-grid {
  gap: clamp(16px, 2.6vw, 24px);
}

.page-about .about-reach-item {
  padding: clamp(20px, 2.8vw, 26px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-blue);
  background: linear-gradient(180deg, rgba(14, 23, 48, .92), rgba(6, 11, 26, .92));
  transition: border-color var(--dur) var(--ease);
}

.page-about .about-reach-item:hover {
  border-color: var(--cyan);
}

.page-about .about-reach-item .num-lg {
  display: block;
  margin-bottom: 10px;
}

.page-about .about-reach-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-dim);
}

/* ---------- 内容生态 ---------- */

.page-about .about-eco-band {
  padding: clamp(28px, 4.6vw, 52px);
  border-color: rgba(201, 123, 90, .34);
  background:
    linear-gradient(140deg, rgba(201, 123, 90, .2), rgba(201, 123, 90, .04) 58%, rgba(6, 11, 26, 0)),
    var(--hull-blue);
}

.page-about .about-eco-band .section-head {
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-about .about-eco-grid {
  gap: clamp(24px, 3.6vw, 44px);
  align-items: start;
}

.page-about .about-eco-text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--about-body);
}

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

.page-about .about-eco-stats {
  display: grid;
  gap: 2px;
}

.page-about .about-eco-stat {
  padding: 14px 0;
  border-bottom: 1px dashed rgba(243, 238, 228, .16);
}

.page-about .about-eco-stat:last-child {
  border-bottom: 0;
}

.page-about .about-eco-stat .num-lg {
  display: block;
  margin-bottom: 6px;
  color: var(--cream);
}

.page-about .about-eco-stat p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--about-dim);
}

.page-about .about-eco-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  padding-top: clamp(18px, 2.6vw, 24px);
  border-top: 1px solid rgba(243, 238, 228, .14);
}

.page-about .about-link {
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-link:hover {
  color: var(--cyan-glow);
  border-bottom-color: var(--cyan-glow);
}

/* ---------- 备案与认可 ---------- */

.page-about .about-trust-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .about-trust-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-trust-list li {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-blue);
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-body);
}

.page-about .about-trust-list li:first-child {
  border-top: 1px solid var(--line-blue);
}

.page-about .about-trust-k {
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .about-trust-aside {
  padding: clamp(22px, 3vw, 30px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-trust-aside .eyebrow {
  margin: 0;
}

.page-about .about-trust-line {
  display: grid;
  gap: 4px;
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-blue);
}

.page-about .about-trust-line-k {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
}

.page-about .about-trust-line-v {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--cream);
  word-break: break-word;
}

.page-about .about-trust-hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-trust-btn {
  align-self: flex-start;
  margin-top: 4px;
}

@media (min-width: 900px) {
  .page-about .about-trust-grid {
    grid-template-columns: minmax(0, 1.16fr) minmax(0, .84fr);
  }
  .page-about .about-trust-list li {
    grid-template-columns: 108px minmax(0, 1fr);
  }
}

/* ---------- 结尾行动区 ---------- */

.page-about .about-cta-inner {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(26px, 4vw, 46px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--line-blue);
  background:
    radial-gradient(circle at 88% 12%, rgba(62, 231, 209, .14), transparent 58%),
    radial-gradient(circle at 6% 96%, rgba(255, 166, 61, .1), transparent 52%),
    var(--hull-blue);
  align-items: center;
}

.page-about .about-cta-text h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1.32;
  letter-spacing: .02em;
  color: var(--cream);
}

.page-about .about-cta-text p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--about-body);
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 860px) {
  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

/* ---------- 窄屏收口 ---------- */

@media (max-width: 620px) {
  .page-about .about-stat {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .page-about .about-stat-label {
    text-align: left;
  }
  .page-about .about-flow li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }
  .page-about .about-trust-list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }
  .page-about .about-hero-actions .btn,
  .page-about .about-cta-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }
}
<<<END>>>