/* ============ page-about · 品牌与数据方法论 ============ */

.page-about {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about [data-section] {
  scroll-margin-top: 96px;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 44px) 0 clamp(44px, 7vw, 96px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(34, 224, 194, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 224, 194, 0.055) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: radial-gradient(115% 78% at 76% 18%, #000 0%, transparent 70%);
  mask-image: radial-gradient(115% 78% at 76% 18%, #000 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-hero-grid {
  display: grid;
  gap: clamp(30px, 4.4vw, 58px);
}

.page-about .about-hero-lead .display {
  margin: clamp(10px, 1.4vw, 18px) 0 0;
  max-width: 18ch;
}

.page-about .about-hero-lead .lede {
  margin-top: clamp(16px, 2vw, 26px);
  max-width: 56ch;
}

.page-about .about-hero-lead .btn-row {
  margin-top: clamp(22px, 3vw, 34px);
}

/* 章节索引卡 */
.page-about .about-index {
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: var(--panel);
  padding: clamp(16px, 2.2vw, 24px);
}

.page-about .about-index-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: aix;
}

.page-about .about-index-list li {
  counter-increment: aix;
  border-top: 1px solid var(--line);
}

.page-about .about-index-list li:first-child {
  border-top: 0;
}

.page-about .about-index-list a {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  color: var(--cool);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s ease, padding-left 0.18s ease;
}

.page-about .about-index-list a::before {
  content: counter(aix, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
  transition: color 0.18s ease;
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible,
.page-about .about-index-list a[aria-current="true"] {
  color: var(--cyan-bright);
  padding-left: 6px;
}

.page-about .about-index-list a:hover::before,
.page-about .about-index-list a[aria-current="true"]::before {
  color: var(--flare);
}

/* ---------- 数据概览条 ---------- */
.page-about .about-figures-band {
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
  padding: clamp(22px, 3vw, 34px) 0;
}

.page-about .about-figures {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(18px, 2.6vw, 30px);
}

.page-about .about-figures li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
}

.page-about .about-figure-n {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .about-figure-n--cyan { color: var(--cyan); }
.page-about .about-figure-n--bright { color: var(--cyan-bright); }
.page-about .about-figure-n--flare { color: var(--flare); }
.page-about .about-figure-n--cool { color: var(--cool); }

.page-about .about-figure-l {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding: clamp(48px, 7vw, 104px) 0;
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--line);
}

.page-about .about-h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.2vw, 3.3rem);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--cool);
  max-width: 24ch;
}

.page-about .about-head-lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.5vw, 1.14rem);
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-panel-text {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-cols {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-about .about-cols-main .prose {
  margin-top: clamp(16px, 2vw, 24px);
}

.page-about .about-cols-side {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2vw, 22px);
}

/* ---------- 引自块 ---------- */
.page-about .about-pullquote {
  margin-top: clamp(26px, 3.6vw, 42px);
  padding: clamp(20px, 2.6vw, 30px) clamp(18px, 2.4vw, 28px);
  background: linear-gradient(100deg, rgba(34, 224, 194, 0.08), rgba(11, 37, 69, 0.2));
  border-left: 2px solid var(--cyan);
  display: grid;
  gap: 12px;
}

.page-about .about-pullquote-n {
  margin: 0;
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--cyan-bright);
}

.page-about .about-pullquote-t {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(0.95rem, 1.4vw, 1.06rem);
  line-height: 1.72;
  color: var(--cool);
}

/* ---------- 时间线 ---------- */
.page-about .about-head {
  max-width: 66ch;
}

.page-about .about-timeline-media {
  margin: clamp(28px, 4vw, 48px) 0 0;
}

.page-about .about-timeline {
  list-style: none;
  margin: clamp(32px, 4.6vw, 56px) 0 0;
  padding: 0 0 0 clamp(20px, 3vw, 34px);
  border-left: 1px solid var(--line-strong);
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
}

.page-about .about-tl-item {
  position: relative;
}

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * clamp(20px, 3vw, 34px) - 5px);
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
}

.page-about .about-tl-item--current::before {
  background: var(--flare);
  border-color: var(--flare);
}

.page-about .about-tl-era {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-tl-item--current .about-tl-era {
  color: var(--flare);
}

.page-about .about-tl-title {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(1.15rem, 2.1vw, 1.55rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--cool);
}

.page-about .about-tl-text {
  margin: 8px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

/* ---------- 统计模块清单 ---------- */
.page-about .about-modules {
  list-style: none;
  margin: clamp(20px, 2.6vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 clamp(20px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-about .about-modules li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  color: var(--cool);
}

.page-about .about-module-no {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

/* ---------- 团队条形 ---------- */
.page-about .about-team-bars {
  margin-top: clamp(34px, 5vw, 60px);
  border-top: 1px solid var(--line-strong);
  padding-top: clamp(20px, 2.6vw, 30px);
  display: grid;
  gap: 14px;
}

.page-about .about-bar {
  display: grid;
  grid-template-columns: minmax(72px, 96px) minmax(0, 1fr) 44px;
  align-items: center;
  gap: clamp(10px, 1.8vw, 18px);
}

.page-about .about-bar-label {
  font-size: 13px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.page-about .about-bar-track {
  display: block;
  height: 8px;
  background: var(--steel);
  overflow: hidden;
}

.page-about .about-bar-fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-bright));
}

.page-about .about-bar:nth-child(1) .about-bar-fill { width: 39%; }
.page-about .about-bar:nth-child(2) .about-bar-fill { width: 26%; background: linear-gradient(90deg, var(--flare), var(--clay)); }
.page-about .about-bar:nth-child(3) .about-bar-fill { width: 22%; background: linear-gradient(90deg, var(--moss), var(--cyan)); }
.page-about .about-bar:nth-child(4) .about-bar-fill { width: 13%; background: linear-gradient(90deg, var(--clay), var(--bone)); }

.page-about .about-bar-num {
  text-align: right;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--cool);
}

/* ---------- 认可列表 ---------- */
.page-about .about-honors {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-honors li {
  padding: 13px 0 13px 18px;
  border-top: 1px solid var(--line);
  position: relative;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--cool);
}

.page-about .about-honors li:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-about .about-honors li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 7px;
  height: 7px;
  background: var(--moss);
}

.page-about .about-honors li:first-child::before {
  top: 11px;
}

/* ---------- 联系区 ---------- */
.page-about .about-reach {
  background: linear-gradient(115deg, var(--ink-2) 0%, var(--ink) 68%);
  border-top: 1px solid var(--line-strong);
}

.page-about .about-reach-inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 42px);
}

.page-about .about-reach-text .about-h2 {
  max-width: 20ch;
}

.page-about .about-reach .btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-modules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-bar {
    grid-template-columns: minmax(96px, 130px) minmax(0, 1fr) 52px;
  }

  .page-about .about-reach-inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-about .about-reach .btn-row {
    justify-content: flex-end;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.34fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-cols-side {
    position: sticky;
    top: 96px;
  }

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

@media (min-width: 1240px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.78fr) minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index-list a,
  .page-about .about-index-list a::before {
    transition: none;
  }
}
</PAGE_CSS>>>