/* ========================================
   品牌轨迹 | about
   作用域：.page-about
======================================== */

.page-about {
  --about-green: #00E676;
  --about-orange: #FF6D00;
  --about-teal: #0F4C5C;
  --about-wine: #7B2D26;
  --about-indigo: #3F0D5F;
  --about-line: rgba(154, 167, 184, 0.22);
  background: var(--ink-blue);
  color: var(--porcelain);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .about-breadcrumb {
  padding: 28px 0 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  padding: 48px 0 72px;
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: auto -80px -30px auto;
  width: 46%;
  height: 180px;
  background: linear-gradient(90deg, transparent, rgba(255, 109, 0, 0.14));
  pointer-events: none;
}

.page-about .about-hero-copy {
  position: relative;
  z-index: 2;
}

.page-about .about-hero-zh {
  display: block;
  font-family: var(--font-body);
  font-size: 0.52em;
  font-weight: 400;
  color: var(--steel-mist);
  margin-top: 10px;
  letter-spacing: 0.16em;
}

.page-about .about-hero-desc {
  font-size: 17px;
  line-height: 1.85;
  color: var(--steel-mist);
  margin: 24px 0 28px;
  max-width: 500px;
  font-weight: 300;
}

.page-about .about-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}

.page-about .about-scroll-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--about-green);
  text-decoration: none;
  font-family: var(--font-data);
  font-size: 14px;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(0, 230, 118, 0.38);
  padding-bottom: 6px;
  transition: border-color 0.24s ease, color 0.24s ease;
}

.page-about .about-scroll-link:hover {
  border-color: var(--about-green);
  color: var(--porcelain);
}

.page-about .about-hero-visual {
  position: relative;
  border-radius: 4px;
  overflow: hidden;
  transform: skewX(-1.5deg);
  border-left: 4px solid var(--about-green);
  box-shadow: 0 24px 60px rgba(3, 8, 22, 0.4);
}

.page-about .about-hero-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 58%, rgba(255, 109, 0, 0.4) 100%);
  pointer-events: none;
}

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

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: 1.05fr 0.95fr;
    align-items: center;
    gap: 72px;
    min-height: 640px;
    padding: 72px 0 96px;
  }
}

/* ---------- 章节头 ---------- */
.page-about .section-head {
  margin-bottom: 44px;
  max-width: 760px;
}

.page-about .section-head .section-kicker {
  color: var(--about-green);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-about .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
  margin: 0 0 14px;
  color: var(--porcelain);
  letter-spacing: -0.02em;
}

.page-about .section-head .section-desc {
  color: var(--steel-mist);
  font-size: 16px;
  line-height: 1.75;
  margin: 0;
}

/* ---------- 品牌叙事 ---------- */
.page-about .about-narrative {
  border-top: 1px solid var(--about-line);
  padding: 72px 0;
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(7, 19, 48, 0.5));
}

.page-about .about-narrative-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-about .about-narrative-text p {
  color: var(--steel-mist);
  font-size: 16px;
  line-height: 1.9;
  margin: 0 0 16px;
  max-width: 640px;
}

.page-about .about-narrative-text p:first-child::first-letter {
  font-family: var(--font-display);
  font-size: 2.8em;
  float: left;
  line-height: 0.85;
  margin-right: 10px;
  color: var(--about-green);
}

.page-about .about-narrative-aside {
  background: var(--about-indigo);
  border-radius: 2px;
  padding: 28px 28px;
  position: relative;
  transform: skewX(-1.2deg);
}

.page-about .about-narrative-metric {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-narrative-num {
  font-family: var(--font-data);
  font-size: clamp(44px, 7vw, 72px);
  font-weight: 700;
  color: var(--about-green);
  line-height: 1;
  letter-spacing: -0.04em;
}

.page-about .about-narrative-aside p {
  color: var(--steel-mist);
  font-size: 13px;
  line-height: 1.7;
  margin: 0;
}

@media (min-width: 960px) {
  .page-about .about-narrative-grid {
    grid-template-columns: 1.4fr 0.6fr;
    gap: 72px;
    align-items: start;
  }

  .page-about .about-narrative-aside {
    margin-top: 40px;
  }
}

/* ---------- 数据覆盖 ---------- */
.page-about .about-coverage {
  background: var(--about-teal);
  padding: 80px 0;
  position: relative;
}

.page-about .about-coverage::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 46%;
  height: 100%;
  background: radial-gradient(ellipse at top right, rgba(0, 230, 118, 0.16), transparent 56%);
  pointer-events: none;
}

.page-about .about-coverage-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.page-about .about-coverage-item {
  background: rgba(7, 19, 48, 0.34);
  border-left: 3px solid var(--about-green);
  padding: 24px 18px;
  transition: transform 0.24s var(--ease-out);
}

.page-about .about-coverage-item:nth-child(2) {
  border-left-color: var(--about-orange);
}

.page-about .about-coverage-item:nth-child(3) {
  border-left-color: var(--about-wine);
}

.page-about .about-coverage-item:nth-child(4) {
  border-left-color: var(--about-green);
}

.page-about .about-coverage-item:hover {
  transform: translateY(-4px);
}

.page-about .about-coverage-num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  color: var(--porcelain);
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.page-about .about-coverage-label {
  display: block;
  color: var(--porcelain);
  font-size: 13px;
  letter-spacing: 0.08em;
  opacity: 0.85;
}

@media (min-width: 768px) {
  .page-about .about-coverage-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .page-about .about-coverage-item {
    padding: 32px 24px;
  }
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: var(--night-blue);
  padding: 88px 0;
  position: relative;
}

.page-about .about-timeline-track {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 0;
}

.page-about .about-timeline-track::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 9px;
  width: 2px;
  background: linear-gradient(180deg, var(--about-green) 0%, rgba(0, 230, 118, 0.14) 68%, rgba(154, 167, 184, 0.12) 100%);
}

.page-about .about-milestone {
  position: relative;
  padding-left: 42px;
  margin-bottom: 44px;
}

.page-about .about-milestone-dot {
  position: absolute;
  left: 2px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--about-green);
  box-shadow: 0 0 0 4px rgba(0, 230, 118, 0.18);
  z-index: 2;
}

.page-about .about-milestone-meta {
  margin-bottom: 10px;
}

.page-about .about-milestone-card {
  background: rgba(245, 247, 250, 0.04);
  border-radius: 2px;
  padding: 20px 22px;
  border-left: 3px solid var(--about-orange);
  transition: background-color 0.24s var(--ease-out), transform 0.24s var(--ease-out);
}

.page-about .about-milestone-card h3 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--porcelain);
  margin: 0 0 8px;
}

.page-about .about-milestone-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel-mist);
  margin: 0;
}

.page-about .about-milestone-card:hover {
  background: rgba(245, 247, 250, 0.07);
  transform: translateY(-3px);
}

.page-about .about-timeline-media {
  margin: 0 0 44px 42px;
  border-radius: 4px;
  overflow: hidden;
  border-bottom: 3px solid var(--about-green);
}

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

@media (min-width: 768px) {
  .page-about .about-milestone {
    width: calc(50% - 32px);
    padding-left: 0;
    margin-bottom: 60px;
  }

  .page-about .about-milestone--left {
    margin-right: auto;
    text-align: right;
  }

  .page-about .about-milestone--right {
    margin-left: auto;
  }

  .page-about .about-milestone--left .about-milestone-dot {
    left: auto;
    right: -40px;
  }

  .page-about .about-milestone--right .about-milestone-dot {
    left: -40px;
  }

  .page-about .about-timeline-track::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .about-timeline-media {
    margin: 0 0 60px;
    width: calc(50% - 32px);
    margin-left: auto;
  }
}

/* ---------- 服务分层与团队形态 ---------- */
.page-about .about-service {
  background: var(--about-indigo);
  padding: 88px 0;
  position: relative;
}

.page-about .about-tree {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  position: relative;
}

.page-about .about-tree-root {
  background: linear-gradient(120deg, var(--about-indigo), rgba(63, 13, 95, 0.7));
  border: 2px solid var(--about-green);
  padding: 24px 28px;
  text-align: center;
  margin: 0 auto 36px;
  position: relative;
  z-index: 2;
  max-width: 320px;
  border-radius: 4px;
}

.page-about .about-tree-root strong {
  display: block;
  font-family: var(--font-display);
  color: var(--porcelain);
  font-size: 20px;
  letter-spacing: 0.02em;
}

.page-about .about-tree-root span {
  display: block;
  color: var(--steel-mist);
  font-size: 13px;
  margin-top: 6px;
  letter-spacing: 0.1em;
}

.page-about .about-tree-branches {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-tree-branch {
  background: rgba(245, 247, 250, 0.05);
  border-right: 3px solid var(--about-orange);
  padding: 24px 22px;
  position: relative;
  transition: background-color 0.24s var(--ease-out), transform 0.24s var(--ease-out);
}

.page-about .about-tree-branch:hover {
  background-color: rgba(245, 247, 250, 0.09);
  transform: translateY(-4px);
}

.page-about .about-tree-branch-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-tree-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-size: 16px;
  color: var(--ink-blue);
  border-radius: 2px;
}

.page-about .about-tree-icon--green {
  background: var(--about-green);
}

.page-about .about-tree-icon--orange {
  background: var(--about-orange);
}

.page-about .about-tree-icon--teal {
  background: var(--about-teal);
}

.page-about .about-tree-branch-head h3 {
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--porcelain);
  margin: 0;
}

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

.page-about .about-tree-features li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--steel-mist);
  font-size: 14px;
  line-height: 1.7;
  padding: 6px 0;
}

.page-about .about-tree-check {
  color: var(--about-green);
  font-weight: 700;
  flex-shrink: 0;
}

.page-about .about-service-media {
  margin-top: 56px;
  border-radius: 4px;
  overflow: hidden;
  border-bottom: 3px solid var(--about-orange);
}

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

.page-about .about-service-caption {
  color: var(--steel-mist);
  font-size: 13px;
  line-height: 1.6;
  margin: 14px 0 0;
  font-family: var(--font-data);
}

@media (min-width: 960px) {
  .page-about .about-tree-branches {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-about .about-tree-branch::before {
    content: "";
    position: absolute;
    top: -36px;
    left: 50%;
    width: 2px;
    height: 36px;
    background: linear-gradient(180deg, var(--about-green), rgba(0, 230, 118, 0.2));
  }
}

/* ---------- 场馆信息入口由来 ---------- */
.page-about .about-venue {
  background: var(--ice-white);
  color: var(--ink-blue);
  padding: 88px 0;
}

.page-about .about-venue .section-head h2,
.page-about .about-venue .section-head .section-desc {
  color: var(--ink-blue);
}

.page-about .about-venue .section-head .section-kicker {
  color: var(--about-orange);
}

.page-about .about-venue-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .about-venue-card {
  background: var(--porcelain);
  border-top: 4px solid var(--about-green);
  padding: 28px 26px;
  position: relative;
  transform: skewX(-1deg);
  box-shadow: 0 12px 32px rgba(10, 31, 68, 0.08);
  transition: transform 0.24s var(--ease-out), box-shadow 0.24s var(--ease-out);
}

.page-about .about-venue-card:nth-child(2) {
  border-top-color: var(--about-orange);
}

.page-about .about-venue-card:nth-child(3) {
  border-top-color: var(--about-teal);
}

.page-about .about-venue-card:hover {
  transform: skewX(-1deg) translateY(-4px);
  box-shadow: 0 20px 44px rgba(10, 31, 68, 0.12);
}

.page-about .about-venue-index {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  background: var(--ink-blue);
  color: var(--about-green);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 18px;
  border-radius: 2px;
}

.page-about .about-venue-card:nth-child(2) .about-venue-index {
  color: var(--about-orange);
}

.page-about .about-venue-card:nth-child(3) .about-venue-index {
  color: var(--porcelain);
}

.page-about .about-venue-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--ink-blue);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.page-about .about-venue-card p {
  color: var(--ink-blue);
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
  opacity: 0.8;
}

@media (min-width: 960px) {
  .page-about .about-venue-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
  }

  .page-about .about-venue-card {
    padding: 36px 32px;
  }
}

/* ---------- 页尾 CTA ---------- */
.page-about .about-follow {
  background: var(--night-blue);
  padding: 72px 0;
}

.page-about .about-follow-inner {
  background: linear-gradient(135deg, var(--about-indigo), var(--about-wine));
  border-radius: 4px;
  padding: 56px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-about .about-follow-inner::before {
  content: "";
  position: absolute;
  top: -90px;
  right: -90px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 230, 118, 0.3), transparent 62%);
}

.page-about .about-follow-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.5vw, 40px);
  margin: 0 0 12px;
  color: var(--porcelain);
}

.page-about .about-follow-desc {
  color: var(--steel-mist);
  font-size: 15px;
  line-height: 1.7;
  margin: 0 auto;
  max-width: 520px;
}

.page-about .about-follow-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
  position: relative;
  z-index: 2;
}

.page-about .about-follow-note {
  color: rgba(245, 247, 250, 0.6);
  font-size: 12px;
  line-height: 1.75;
  max-width: 620px;
  margin: 36px auto 0;
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .page-about .about-follow-inner {
    padding: 72px 64px;
  }
}