.page-about {
  overflow-x: hidden;
  background: var(--c-bg);
}

/* ===== Hero 首屏 ===== */
.page-about .about-hero {
  position: relative;
  padding: clamp(36px, 6vw, 72px) 0;
  background: linear-gradient(125deg, var(--c-bg-deep) 0%, var(--c-bg) 55%, var(--c-blue) 130%);
  overflow: hidden;
}
.page-about .about-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(245,247,250,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245,247,250,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.page-about .about-hero::after {
  content: '';
  position: absolute;
  top: 18%;
  right: -120px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(255,107,0,0.22), transparent 68%);
  pointer-events: none;
}
.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 40px;
  align-items: center;
}
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
  }
}
.page-about .breadcrumb {
  position: relative;
  margin-bottom: 32px;
}
.page-about .breadcrumb__link {
  color: var(--c-muted);
  text-decoration: none;
  font-size: 14px;
}
.page-about .breadcrumb__link:hover {
  color: var(--c-green);
}
.page-about .breadcrumb__sep {
  color: var(--c-muted);
  margin: 0 8px;
}
.page-about .breadcrumb__current {
  color: var(--c-text);
  font-size: 14px;
}
.page-about .about-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-green);
  text-transform: uppercase;
}
.page-about .about-hero__title {
  margin: 0 0 22px;
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 72px);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.08;
}
.page-about .about-hero__grad {
  background: var(--c-grad-em);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.page-about .about-hero__desc {
  max-width: 34em;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.page-about .about-hero__stat {
  position: relative;
  overflow: hidden;
  padding: 22px 18px 20px;
  background: rgba(16, 27, 45, 0.72);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--r-lg);
  backdrop-filter: blur(6px);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.page-about .about-hero__stat::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--c-green);
}
.page-about .about-hero__stat:nth-child(2n)::before {
  background: var(--c-orange);
}
.page-about .about-hero__stat:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 255, 135, 0.35);
}
.page-about .about-hero__num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-green);
}
.page-about .about-hero__stat:nth-child(2n) .about-hero__num {
  color: var(--c-orange);
}
.page-about .about-hero__plus,
.page-about .about-hero__unit {
  font-size: 0.48em;
  margin-left: 2px;
}
.page-about .about-hero__label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--c-muted);
  letter-spacing: 0.02em;
}

/* ===== 品牌起源 ===== */
.page-about .about-origin {
  padding: 64px 0;
}
.page-about .about-origin__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
.page-about .about-origin__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.page-about .about-origin__content .section__kicker {
  margin-bottom: 10px;
}
.page-about .about-origin__content h2,
.page-about .about-culture__content h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.page-about .about-origin__content p,
.page-about .about-culture__content p {
  margin: 12px 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}
.page-about .about-origin__quote {
  margin: 28px 0 0;
  padding: 18px 24px;
  border-left: 3px solid var(--c-green);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(0, 255, 135, 0.06);
  font-family: var(--font-accent), serif;
  font-size: 18px;
  line-height: 1.6;
  color: var(--c-text);
}
.page-about .about-origin__quote-mark {
  color: var(--c-green);
  font-size: 28px;
  line-height: 0;
  margin-right: 4px;
}

/* ===== 发展历程 ===== */
.page-about .about-timeline {
  padding: 64px 0;
  background: var(--c-bg-deep);
}
.page-about .about-timeline__track {
  position: relative;
  margin-top: 44px;
}
.page-about .about-timeline__track::before {
  content: '';
  position: absolute;
  top: 4px;
  bottom: 4px;
  left: 10px;
  width: 2px;
  background: linear-gradient(to bottom, var(--c-green), var(--c-teal) 45%, var(--c-orange));
  opacity: 0.4;
}
.page-about .about-timeline__item {
  position: relative;
  padding-left: 44px;
  margin-bottom: 36px;
}
.page-about .about-timeline__node {
  position: absolute;
  left: 10px;
  top: 8px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}
.page-about .about-timeline__dot {
  display: block;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 5px rgba(0, 255, 135, 0.14), 0 0 18px rgba(0, 255, 135, 0.4);
}
.page-about .about-timeline__year {
  margin-top: 6px;
  font-family: var(--font-data);
  font-size: 11px;
  color: var(--c-muted);
  white-space: nowrap;
}
.page-about .about-timeline__card {
  background: var(--c-card);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--r-lg);
  padding: 24px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.page-about .about-timeline__card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 135, 0.35);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.28);
}
.page-about .about-timeline__badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(0, 255, 135, 0.18);
  background: rgba(0, 255, 135, 0.1);
  color: var(--c-green);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 12px;
}
.page-about .about-timeline__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.page-about .about-timeline__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}
.page-about .about-timeline__spacer {
  display: none;
}

/* ===== 数据与技术 ===== */
.page-about .about-tech {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--c-blue) 0%, var(--c-bg) 70%);
}
.page-about .about-tech__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
.page-about .about-tech__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}
.page-about .about-tech__list {
  display: grid;
  gap: 14px;
}
.page-about .about-tech__item {
  position: relative;
  padding: 20px 20px 20px 68px;
  background: rgba(16, 27, 45, 0.75);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--r-md);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.page-about .about-tech__item:hover {
  transform: translateX(6px);
  border-color: rgba(0, 255, 135, 0.4);
}
.page-about .about-tech__index {
  position: absolute;
  left: 20px;
  top: 20px;
  font-family: var(--font-data);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-green);
}
.page-about .about-tech__item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
}
.page-about .about-tech__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ===== 认证与荣誉 ===== */
.page-about .about-honors {
  padding: 64px 0;
}
.page-about .about-honors__grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}
.page-about .about-honors__card {
  position: relative;
  overflow: hidden;
  padding: 28px 24px;
  background: var(--c-card);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--r-lg);
  transition: transform 0.25s ease, border-color 0.25s ease;
}
.page-about .about-honors__card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--c-grad-em);
}
.page-about .about-honors__card--iso {
  background: linear-gradient(145deg, var(--c-teal) -20%, var(--c-card) 50%);
}
.page-about .about-honors__card--award {
  background: linear-gradient(145deg, var(--c-wine) -30%, var(--c-card) 55%);
}
.page-about .about-honors__card--partner {
  background: linear-gradient(145deg, var(--c-purple) -20%, var(--c-card) 50%);
}
.page-about .about-honors__card--price {
  background: linear-gradient(145deg, var(--c-blue) -20%, var(--c-card) 45%);
}
.page-about .about-honors__card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 135, 0.35);
}
.page-about .about-honors__badge {
  display: inline-block;
  margin-bottom: 16px;
  padding: 5px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(0, 255, 135, 0.2);
  background: rgba(0, 255, 135, 0.1);
  color: var(--c-green);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.page-about .about-honors__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
}
.page-about .about-honors__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ===== 团队与文化 ===== */
.page-about .about-culture {
  padding: 64px 0;
  background: linear-gradient(120deg, var(--c-purple) 0%, var(--c-bg-deep) 75%);
}
.page-about .about-culture__grid {
  display: grid;
  gap: 32px;
  align-items: center;
}
.page-about .about-culture__media {
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
}
.page-about .about-culture__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}
.page-about .about-culture__list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text);
}
.page-about .about-culture__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-green);
  box-shadow: 0 0 0 4px rgba(0, 255, 135, 0.12);
}

/* ===== CTA 区块 ===== */
.page-about .about-cta {
  padding: 56px 0 80px;
}
.page-about .about-cta__inner {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 48px 24px;
  background: linear-gradient(135deg, var(--c-card) 0%, var(--c-purple) 120%);
  border: 1px solid rgba(245, 247, 250, 0.08);
  border-radius: var(--r-lg);
}
.page-about .about-cta__inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--c-grad-em);
}
.page-about .about-cta__inner h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
}
.page-about .about-cta__inner p {
  max-width: 34em;
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 28px;
}

/* ===== 图片基础 ===== */
.page-about .media-frame {
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-card);
}
.page-about .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===== 章节公共标题 ===== */
.page-about .section__kicker {
  margin: 0 0 10px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-green);
}
.page-about .section__head {
  margin-bottom: 32px;
}
.page-about .section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 640px) {
  .page-about .about-honors__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin,
  .page-about .about-timeline,
  .page-about .about-tech,
  .page-about .about-honors,
  .page-about .about-culture {
    padding-top: 96px;
    padding-bottom: 96px;
  }
  .page-about .about-origin__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }
  .page-about .about-tech__grid {
    grid-template-columns: 1fr 1fr;
    gap: 52px;
  }
  .page-about .about-tech__media {
    order: 1;
  }
  .page-about .about-tech__list {
    order: 2;
  }
  .page-about .about-culture__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  /* 时间线中央轴线 */
  .page-about .about-timeline__track::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 1fr 64px 1fr;
    gap: 24px;
    align-items: start;
    padding-left: 0;
  }
  .page-about .about-timeline__node {
    position: relative;
    left: auto;
    top: 4px;
    grid-column: 2;
    justify-self: center;
  }
  .page-about .about-timeline__card {
    grid-column: 1;
    text-align: right;
  }
  .page-about .about-timeline__spacer {
    display: block;
    grid-column: 3;
  }
  .page-about .about-timeline__item:nth-child(even) .about-timeline__card {
    grid-column: 3;
    text-align: left;
  }
  .page-about .about-timeline__item:nth-child(even) .about-timeline__spacer {
    grid-column: 1;
  }
}

/* ===== 固定侧边栏 ===== */
@media (min-width: 1360px) {
  .page-about .container {
    max-width: calc(var(--content-w) - 180px);
  }
  .page-about .about-aside {
    display: block;
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    width: 160px;
    padding: 14px;
    z-index: 80;
    background: rgba(7, 18, 41, 0.88);
    border: 1px solid rgba(245, 247, 250, 0.1);
    border-radius: var(--r-lg);
    backdrop-filter: blur(12px);
  }
  .page-about .about-aside__label {
    padding: 0 10px;
    margin-bottom: 10px;
    font-family: var(--font-data);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--c-muted);
  }
  .page-about .about-aside__nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
  }
  .page-about .about-aside__link {
    display: block;
    padding: 7px 10px;
    border-radius: 8px;
    color: var(--c-muted);
    font-size: 13px;
    text-decoration: none;
    transition: color 0.2s ease, background 0.2s ease;
  }
  .page-about .about-aside__link:hover {
    color: var(--c-text);
    background: rgba(0, 255, 135, 0.08);
  }
}