/* ==== 页面基础 ==== */
.page-about {
  background: var(--w-night);
  color: var(--w-cloud);
  font-family: var(--w-font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}

.page-about h2 {
  font-family: var(--w-font-head);
  font-size: var(--w-fs-section);
  line-height: 1.3;
  margin: 14px 0 16px;
}

.page-about figcaption {
  color: var(--w-gray);
  font-size: 13px;
  margin-top: 8px;
  line-height: 1.5;
}

/* ==== 首屏 ==== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--w-header-h) + 28px) 0 56px;
  background:
    linear-gradient(135deg, rgba(245, 166, 35, 0.08) 0%, transparent 40%),
    radial-gradient(ellipse at 82% 8%, rgba(58, 12, 163, 0.42), transparent 55%),
    radial-gradient(ellipse at 8% 90%, rgba(245, 166, 35, 0.1), transparent 46%),
    linear-gradient(135deg, #0F1A2C 0%, #0C1422 58%, #141138 100%);
  border-bottom: 1px solid rgba(245, 166, 35, 0.28);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__glyph {
  position: absolute;
  top: 56px;
  right: 12px;
  z-index: 0;
  font-family: var(--w-font-head);
  font-size: clamp(96px, 26vw, 240px);
  line-height: 1;
  color: rgba(245, 166, 35, 0.1);
  pointer-events: none;
  user-select: none;
}

.page-about .about-hero__cloud {
  position: absolute;
  bottom: 14px;
  left: 16px;
  z-index: 0;
  width: 200px;
  max-width: 46%;
  height: auto;
  color: rgba(245, 166, 35, 0.14);
  pointer-events: none;
}

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  font-size: var(--w-fs-data);
  letter-spacing: 0.12em;
  color: var(--w-green);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--w-gold-grad);
}

.page-about .about-hero__title {
  margin: 0 0 16px;
  font-family: var(--w-font-head);
  font-size: clamp(36px, 8vw, 60px);
  line-height: 1.12;
  color: var(--w-cloud);
  letter-spacing: 0.02em;
}

.page-about .about-hero__title-accent {
  color: var(--w-gold);
}

.page-about .about-hero__lead {
  max-width: 720px;
  margin: 0 0 32px;
  font-size: var(--w-fs-body);
  color: rgba(241, 243, 245, 0.82);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  max-width: 760px;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(245, 166, 35, 0.24);
  border-left: 3px solid var(--w-gold);
  padding: 14px 16px;
}

.page-about .about-stat__num {
  font-family: var(--w-font-head);
  font-size: 28px;
  line-height: 1.2;
  color: var(--w-gold);
}

.page-about .about-stat__label {
  margin-top: 2px;
  font-size: 13px;
  color: rgba(241, 243, 245, 0.66);
  letter-spacing: 0.04em;
}

.page-about .about-stat--highlight .about-stat__num {
  color: var(--w-green);
}

.page-about .about-hero .wk-breadcrumb {
  margin-bottom: 22px;
  font-size: var(--w-fs-data);
  color: rgba(241, 243, 245, 0.62);
}

.page-about .about-hero .wk-breadcrumb a {
  color: var(--w-gold);
  text-decoration: none;
}

.page-about .about-hero .wk-breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .about-hero .wk-breadcrumb .wk-breadcrumb__current {
  color: rgba(241, 243, 245, 0.74);
}

/* ==== 品牌起源 ==== */
.page-about .about-origin {
  position: relative;
  padding: 72px 0;
  background: var(--w-cloud);
  color: var(--w-ink);
}

.page-about .about-origin::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--w-gold-grad);
  opacity: 0.85;
}

.page-about .about-origin h2 {
  color: var(--w-ink);
}

.page-about .about-origin p {
  color: rgba(26, 26, 26, 0.74);
}

.page-about .about-origin__grid {
  display: grid;
  gap: 30px;
  align-items: center;
}

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

.page-about .about-origin__media img {
  width: 100%;
  border: 1px solid rgba(26, 26, 26, 0.12);
  box-shadow: 0 16px 32px rgba(15, 26, 44, 0.12);
}

.page-about .about-origin__media figcaption {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-origin__media figcaption::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--w-gold);
  flex: 0 0 auto;
}

/* ==== 平台演进 ==== */
.page-about .about-evolution {
  position: relative;
  overflow: hidden;
  padding: 72px 0;
  background:
    radial-gradient(circle at 5% 20%, rgba(245, 166, 35, 0.12), transparent 32%),
    radial-gradient(circle at 95% 85%, rgba(58, 12, 163, 0.4), transparent 42%),
    var(--w-night);
  color: var(--w-cloud);
}

.page-about .about-evolution h2 {
  color: var(--w-cloud);
}

.page-about .about-evolution__intro {
  max-width: 720px;
  color: rgba(241, 243, 245, 0.75);
}

.page-about .about-evolution__cloud {
  position: absolute;
  top: 44px;
  right: 12px;
  width: 160px;
  max-width: 40%;
  height: auto;
  color: rgba(0, 245, 160, 0.12);
  pointer-events: none;
}

.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: relative;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 56px 16px minmax(0, 1fr);
  column-gap: 14px;
  align-items: start;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 77px;
  top: 22px;
  bottom: -28px;
  width: 2px;
  background: linear-gradient(to bottom, rgba(245, 166, 35, 0.5), rgba(245, 166, 35, 0.05));
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__year {
  font-family: var(--w-font-head);
  font-size: 20px;
  line-height: 1;
  text-align: right;
  color: var(--w-gold);
  padding-top: 4px;
}

.page-about .about-timeline__node {
  width: 12px;
  height: 12px;
  margin-top: 4px;
  background: var(--w-gold);
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(245, 166, 35, 0.55);
  transition: box-shadow var(--w-speed) var(--w-ease);
}

.page-about .about-timeline__card {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(245, 166, 35, 0.2);
  border-left: 2px solid var(--w-gold);
  padding: 16px 18px;
  transition: transform var(--w-speed) var(--w-ease), box-shadow var(--w-speed) var(--w-ease);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  font-family: var(--w-font-head);
  font-size: 18px;
  color: var(--w-gold);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(241, 243, 245, 0.78);
}

.page-about .about-timeline__item:hover .about-timeline__card {
  transform: translateY(-4px);
  box-shadow: var(--w-shadow-gold);
}

.page-about .about-timeline[data-visible] .about-timeline__node {
  box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.22), 0 0 18px rgba(245, 166, 35, 0.75);
}

.page-about .about-evolution__media {
  margin: 40px 0 0;
}

.page-about .about-evolution__media img {
  width: 100%;
  border: 1px solid rgba(245, 166, 35, 0.22);
  box-shadow: var(--w-shadow);
}

.page-about .about-evolution__media figcaption {
  color: rgba(241, 243, 245, 0.62);
}

/* ==== 数据透明机制 ==== */
.page-about .about-transparency {
  position: relative;
  padding: 72px 0;
  background: var(--w-cloud);
  color: var(--w-ink);
}

.page-about .about-transparency::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--w-red);
  opacity: 0.72;
}

.page-about .about-transparency h2 {
  color: var(--w-ink);
}

.page-about .about-transparency p {
  color: rgba(26, 26, 26, 0.74);
}

.page-about .about-transparency__head {
  max-width: 760px;
}

.page-about .about-transparency__grid {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

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

.page-about .about-transparency__media img {
  width: 100%;
  border: 1px solid rgba(26, 26, 26, 0.12);
  box-shadow: var(--w-shadow);
}

.page-about .about-transparency__steps h3 {
  font-family: var(--w-font-head);
  font-size: 21px;
  color: var(--w-ink);
  margin: 0 0 12px;
}

.page-about .about-transparency__steps ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow-step;
}

.page-about .about-transparency__steps li {
  position: relative;
  counter-increment: flow-step;
  padding: 14px 0 14px 44px;
  border-bottom: 1px solid rgba(26, 26, 26, 0.1);
  font-size: 15px;
  color: rgba(26, 26, 26, 0.78);
}

.page-about .about-transparency__steps li::before {
  content: counter(flow-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 14px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--w-red);
  color: #fff;
  font-family: var(--w-font-head);
  font-size: 13px;
}

.page-about .about-transparency__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 36px;
}

.page-about .about-metric {
  background: #fff;
  border: 1px solid rgba(26, 26, 26, 0.12);
  border-top: 3px solid var(--w-red);
  padding: 14px 16px;
}

.page-about .about-metric__num {
  display: block;
  font-family: var(--w-font-head);
  font-size: 26px;
  line-height: 1.2;
  color: var(--w-ink);
}

.page-about .about-metric__label {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--w-gray);
}

/* ==== 团队与文化 ==== */
.page-about .about-team {
  padding: 72px 0;
  background: var(--w-night);
  color: var(--w-cloud);
}

.page-about .about-team h2 {
  color: var(--w-cloud);
}

.page-about .about-team__grid {
  margin-top: 24px;
}

.page-about .about-team .wk-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(245, 166, 35, 0.22);
  border-top: 2px solid var(--w-gold);
  padding: 20px 22px;
}

.page-about .about-team .wk-card h3 {
  margin: 0 0 8px;
  font-family: var(--w-font-head);
  font-size: 18px;
  color: var(--w-gold);
}

.page-about .about-team .wk-card p {
  margin: 0;
  font-size: 15px;
  color: rgba(241, 243, 245, 0.78);
}

.page-about .about-team__trust {
  margin-top: 32px;
  padding: 10px 0 6px 20px;
  border-left: 3px solid var(--w-gold);
  background: linear-gradient(90deg, rgba(245, 166, 35, 0.1), transparent 72%);
}

.page-about .about-team__trust p {
  margin: 0 0 6px;
  color: rgba(241, 243, 245, 0.85);
}

.page-about .about-team__trust .about-team__users {
  font-family: var(--w-font-head);
  color: var(--w-green);
}

.page-about .about-team__contact {
  margin: 20px 0 0;
  font-size: 14px;
  color: rgba(241, 243, 245, 0.65);
}

/* ==== 底部引导 ==== */
.page-about .about-next {
  padding: 52px 0;
  background: var(--w-gold-grad);
  color: var(--w-night);
}

.page-about .about-next__inner {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-next h2 {
  margin: 0 0 8px;
  font-size: var(--w-fs-section);
  color: var(--w-night);
}

.page-about .about-next p {
  margin: 0 0 24px;
  color: rgba(15, 26, 44, 0.82);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.page-about .about-next__btn-primary,
.page-about .about-next__btn-ghost {
  display: inline-block;
  min-width: 156px;
  padding: 12px 24px;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid var(--w-night);
}

.page-about .about-next__btn-primary {
  background: var(--w-night);
  color: var(--w-gold);
}

.page-about .about-next__btn-ghost {
  background: transparent;
  color: var(--w-night);
}

.page-about .about-next__btn-primary:hover,
.page-about .about-next__btn-ghost:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(15, 26, 44, 0.25);
}

/* ==== 桌面增强 ==== */
@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-transparency__metrics {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__glyph {
    right: max(12px, calc((100vw - var(--w-container)) / 2 - 24px));
  }

  .page-about .about-hero__cloud {
    left: max(16px, calc((100vw - var(--w-container)) / 2 + 80px));
    width: 240px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .about-transparency__grid {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    align-items: center;
  }

  /* 横向时间线 */
  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .page-about .about-timeline::before {
    content: "";
    position: absolute;
    top: 51px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, rgba(245, 166, 35, 0.1), rgba(245, 166, 35, 0.6) 12%, rgba(245, 166, 35, 0.6) 88%, rgba(245, 166, 35, 0.1));
  }

  .page-about .about-timeline__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 46px;
  }

  .page-about .about-timeline__item::before {
    display: none;
  }

  .page-about .about-timeline__year {
    position: absolute;
    top: 4px;
    left: 50%;
    transform: translateX(-50%);
    padding-top: 0;
    text-align: center;
    white-space: nowrap;
  }

  .page-about .about-timeline__node {
    margin-top: 0;
    margin-bottom: 16px;
    flex: 0 0 auto;
  }

  .page-about .about-timeline__card {
    width: 100%;
    text-align: left;
    border-left: 1px solid rgba(245, 166, 35, 0.2);
    border-top: 2px solid var(--w-gold);
  }
}