.page-about {
  --about-rail: 150px;
  --about-hair: rgba(58, 66, 76, 0.55);
  --about-ink-text: rgba(29, 35, 43, 0.78);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 通用排版 ---------- */
.page-about p {
  margin: 0 0 clamp(12px, 1.8vw, 18px);
  font-size: 16px;
  line-height: 1.85;
  color: var(--smoke);
}

.page-about h2 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-style: italic;
  font-size: clamp(17px, 2.1vw, 20px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .crumbs {
  padding-top: clamp(4px, 1.4vw, 12px);
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: 0 0 clamp(58px, 8vw, 104px);
  background:
    radial-gradient(900px 520px at 94% -20%, rgba(255, 107, 26, 0.28), transparent 64%),
    radial-gradient(720px 440px at -8% 104%, rgba(0, 229, 255, 0.15), transparent 68%),
    linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 76%, var(--ink-soft) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 46px), 0 100%);
}

.page-about .about-hero__glow {
  position: absolute;
  z-index: -1;
  right: -6%;
  bottom: 16%;
  width: min(560px, 58%);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--flame) 34%, var(--cyan) 82%, transparent);
  transform: rotate(-9deg);
  opacity: 0.7;
  pointer-events: none;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(20px, 3.4vw, 36px);
}

.page-about .about-hero h1 {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(33px, 6vw, 64px);
  line-height: 1.05;
  letter-spacing: -0.015em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 620px;
  margin: 0;
  font-size: clamp(15.5px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--veil);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  padding-top: clamp(16px, 2.4vw, 22px);
  border-top: 1px solid var(--about-hair);
}

.page-about .about-fact__num {
  display: block;
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--flame);
}

.page-about .about-fact__label {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--veil-dim);
}

/* ---------- 章节索引 ---------- */
.page-about .about-index {
  position: relative;
  z-index: 2;
  background: var(--ink-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-index__track {
  display: flex;
  gap: clamp(16px, 2.6vw, 34px);
  overflow-x: auto;
  padding-top: 14px;
  padding-bottom: 14px;
  scrollbar-width: none;
}

.page-about .about-index__track::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__track a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding-bottom: 5px;
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--veil-dim);
  border-bottom: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-index__track a:hover,
.page-about .about-index__track a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--flame);
}

.page-about .about-index__track .mono {
  font-size: 12px;
  color: var(--cyan);
}

/* ---------- 区块骨架：窄栏 + 宽正文 ---------- */
.page-about .about-block {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.6vw, 28px);
}

.page-about .about-block__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 10px;
  border-top: 2px solid var(--flame);
}

.page-about .about-block__no {
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1;
  color: var(--flame);
}

.page-about .about-block__tag {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--veil-dim);
}

.page-about .about-block__body {
  min-width: 0;
}

.page-about .about-block__body > p {
  max-width: 760px;
}

.page-about .about-origin,
.page-about .about-team,
.page-about .about-pipeline,
.page-about .about-timeline-sec,
.page-about .about-network,
.page-about .about-reach {
  padding: clamp(52px, 8vw, 104px) 0;
  scroll-margin-top: 80px;
}

/* ---------- 图片容器 ---------- */
.page-about .about-shot {
  display: block;
  overflow: hidden;
  background: var(--void);
  border: 1px solid var(--about-hair);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), 0 100%);
}

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

.page-about .about-caption {
  display: block;
  margin: 12px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--veil-dim);
}

/* ---------- 01 起点与定位 ---------- */
.page-about .about-origin {
  background: var(--ink);
}

.page-about .about-origin__split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-about .about-origin__copy > p {
  margin-bottom: clamp(12px, 1.8vw, 18px);
}

.page-about .about-quote {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: clamp(16px, 2.2vw, 24px) clamp(18px, 2.6vw, 28px);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.5;
  color: var(--paper);
  background: linear-gradient(140deg, rgba(255, 107, 26, 0.16), rgba(0, 229, 255, 0.06));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), 18px 100%, 0 calc(100% - 18px));
  border-left: 3px solid var(--flame);
}

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

/* ---------- 02 编辑部 ---------- */
.page-about .about-team {
  background: var(--void);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-team__matrix {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 1.8vw, 18px);
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .team-card {
  position: relative;
  padding: clamp(20px, 2.4vw, 28px);
  background: var(--ink);
  border: 1px solid var(--about-hair);
  border-left: 3px solid var(--team-accent, var(--rock));
  transition: transform var(--dur) var(--ease), border-left-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .team-card:nth-child(1) { --team-accent: var(--flame); }
.page-about .team-card:nth-child(2) { --team-accent: var(--cyan); }
.page-about .team-card:nth-child(3) { --team-accent: var(--moss-lit); }
.page-about .team-card:nth-child(4) { --team-accent: var(--clay); }

.page-about .team-card:hover {
  transform: translateY(-4px);
  border-left-color: var(--amber);
  box-shadow: 0 20px 38px -24px rgba(255, 107, 26, 0.65);
}

.page-about .team-card__idx {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--veil-dim);
}

.page-about .team-card h3 {
  color: var(--paper);
}

.page-about .team-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 03 内容生产线 ---------- */
.page-about .about-pipeline {
  background: var(--ink);
}

.page-about .about-pipe {
  list-style: none;
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 2.4vw, 24px);
}

.page-about .pipe-step {
  position: relative;
  padding: clamp(18px, 2.2vw, 24px);
  background: linear-gradient(155deg, rgba(29, 35, 43, 0.94), rgba(17, 20, 24, 0.94));
  border: 1px solid var(--about-hair);
  border-top: 3px solid var(--flame);
}

.page-about .pipe-step__n {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-about .pipe-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

.page-about .about-pipeline__note {
  max-width: 760px;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-left: clamp(14px, 2vw, 20px);
  border-left: 3px solid var(--cyan);
  font-size: 15.5px;
  color: var(--veil);
}

.page-about .about-pipeline__media {
  margin: clamp(26px, 3.6vw, 42px) 0 0;
}

/* ---------- 04 发展脉络 ---------- */
.page-about .about-timeline-sec {
  background: var(--paper);
  color: var(--about-ink-text);
}

.page-about .about-timeline-sec h2 {
  color: var(--ink);
}

.page-about .about-timeline-sec .about-block__rail {
  border-top-color: var(--clay);
}

.page-about .about-timeline-sec .about-block__no {
  color: var(--clay);
}

.page-about .about-timeline-sec .about-block__tag {
  color: rgba(29, 35, 43, 0.55);
}

.page-about .about-timeline-sec p {
  color: var(--about-ink-text);
}

.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--clay), rgba(184, 92, 56, 0.12));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(18px, 2.8vw, 26px) clamp(28px, 4vw, 40px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 15px;
  height: 15px;
  background: var(--paper);
  border: 3px solid var(--clay);
  transform: rotate(45deg);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-timeline__item:hover::before {
  background: var(--flame);
  border-color: var(--flame);
}

.page-about .about-timeline__card {
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.2vw, 24px);
  background: rgba(255, 255, 255, 0.58);
  border: 1px solid rgba(58, 66, 76, 0.22);
  border-left: 3px solid rgba(58, 66, 76, 0.22);
  transition: transform var(--dur) var(--ease), border-left-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-timeline__card:hover {
  transform: translateX(4px);
  background: #fff;
  border-left-color: var(--clay);
}

.page-about .about-timeline__phase {
  display: inline-block;
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  color: var(--ink);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 05 合作生态 ---------- */
.page-about .about-network {
  background: var(--ink);
}

.page-about .about-network__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 1.6vw, 16px);
  margin: clamp(22px, 3vw, 34px) 0 0;
}

.page-about .net-node {
  padding: 16px 16px 18px;
  background: rgba(29, 35, 43, 0.72);
  border: 1px solid var(--about-hair);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .net-node:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  background: rgba(0, 229, 255, 0.07);
}

.page-about .net-node__n {
  display: block;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .net-node__t {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--veil-dim);
}

.page-about .about-network__media {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
}

/* ---------- 06 服务版图 ---------- */
.page-about .about-reach {
  background: var(--void);
  border-top: 1px solid var(--line-soft);
}

.page-about .about-reach__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: clamp(12px, 1.8vw, 18px);
  margin: clamp(20px, 3vw, 32px) 0 0;
}

.page-about .reach-stat {
  padding: 20px 18px 22px;
  background: linear-gradient(150deg, rgba(255, 107, 26, 0.14), rgba(0, 229, 255, 0.05));
  border: 1px solid var(--about-hair);
  border-top: 3px solid var(--flame);
}

.page-about .reach-stat:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-about .reach-stat:nth-child(3) {
  border-top-color: var(--moss-lit);
}

.page-about .reach-stat:nth-child(4) {
  border-top-color: var(--amber);
}

.page-about .reach-stat__num {
  display: block;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .reach-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--veil-dim);
}

.page-about .about-reach__note {
  max-width: 700px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-left: clamp(14px, 2vw, 20px);
  border-left: 3px solid var(--flame);
  font-size: 15px;
  color: var(--veil);
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta {
  position: relative;
  padding: clamp(52px, 7.5vw, 96px) 0;
  background: linear-gradient(133deg, var(--flame) 0%, #E1540D 52%, #A83C08 100%);
  clip-path: polygon(0 34px, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 40px);
  align-items: center;
}

.page-about .about-cta h2 {
  margin: 0 0 12px;
  color: var(--ink-deep);
}

.page-about .about-cta p {
  max-width: 620px;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(12, 15, 19, 0.82);
}

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

.page-about .cta-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  color: var(--paper);
  background: var(--ink-deep);
  border: 1px solid transparent;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .cta-link:hover {
  transform: translateY(-3px);
  background: var(--ink);
}

.page-about .cta-link--outline {
  color: var(--ink-deep);
  background: transparent;
  border-color: rgba(12, 15, 19, 0.5);
}

.page-about .cta-link--outline:hover {
  background: rgba(12, 15, 19, 0.12);
  border-color: var(--ink-deep);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-team__matrix {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.6fr) minmax(230px, 0.75fr);
    align-items: end;
  }

  .page-about .about-hero__facts {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    padding-top: 0;
    padding-left: 22px;
    border-top: 0;
    border-left: 2px solid var(--flame);
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-block {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(30px, 4vw, 64px);
  }

  .page-about .about-block__rail {
    display: block;
    padding-top: 12px;
    position: sticky;
    top: 22px;
    align-self: start;
  }

  .page-about .about-block__no {
    display: block;
    margin-bottom: 8px;
  }
}

@media (min-width: 1120px) {
  .page-about .about-origin__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.88fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-network__media {
    max-width: 880px;
  }
}

/* ---------- 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about .team-card:hover,
  .page-about .net-node:hover,
  .page-about .cta-link:hover,
  .page-about .about-timeline__card:hover {
    transform: none;
  }
}