.page-about {
  --about-ink: #181D1B;
  --about-paper: #F4F1E8;
  --about-green: #0B3D2E;
  --about-green-panel: #134A3B;
  --about-gold: #C9A227;
  --about-gold-light: #E6CE7E;
  --about-red: #9B1B30;
  --about-muted: #6C756F;
  --about-line: #D8D3C6;
  background: var(--about-paper);
  color: var(--about-ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .pitch-container {
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ===== 首屏框景 ===== */
.page-about .about-hero {
  background: linear-gradient(135deg, #0B3D2E 0%, #0E4534 62%, #123F32 100%);
  color: var(--text-on-dark);
  padding: clamp(2.5rem, 6vw, 5rem) 0 clamp(2rem, 5vw, 4rem);
}

.page-about .about-frame {
  position: relative;
  border: 1px solid rgba(201, 162, 39, 0.42);
  padding: clamp(1.5rem, 4vw, 3rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  background:
    linear-gradient(rgba(201, 162, 39, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 162, 39, 0.07) 1px, transparent 1px);
  background-size: 44px 44px;
}

.page-about .about-frame::before,
.page-about .about-frame::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  border-color: var(--about-gold);
  pointer-events: none;
}

.page-about .about-frame::before {
  top: -1px;
  left: -1px;
  border-top: 3px solid;
  border-left: 3px solid;
}

.page-about .about-frame::after {
  bottom: -1px;
  right: -1px;
  border-bottom: 3px solid;
  border-right: 3px solid;
}

.page-about .about-frame__eyebrow {
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--about-gold-light);
  margin: 0 0 1rem;
}

.page-about .about-frame__title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--cream);
  position: relative;
  z-index: 2;
}

.page-about .about-frame__bigword {
  font-size: clamp(3.2rem, 9vw, 7.5rem);
  font-weight: 900;
  line-height: 1;
  margin: 1.5rem 0 0.5rem;
  color: transparent;
  -webkit-text-stroke: 1px rgba(201, 162, 39, 0.5);
  letter-spacing: 0.05em;
}

.page-about .about-frame__sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  color: rgba(244, 241, 232, 0.85);
  max-width: 36ch;
  line-height: 1.8;
  position: relative;
  z-index: 2;
  margin: 0.6rem 0 0;
}

/* ===== 面包屑 ===== */
.page-about .about-crumb {
  padding-top: 1.2rem;
  padding-bottom: 0;
}

.page-about .about-crumb .crumb-list {
  font-size: 0.85rem;
  color: var(--about-muted);
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 1rem;
}

.page-about .about-crumb .crumb-item a {
  color: var(--about-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .about-crumb .crumb-item a:hover {
  color: var(--about-green);
  border-color: var(--about-gold);
}

/* ===== 章节节奏 ===== */
.page-about section {
  padding-top: clamp(2.5rem, 6vw, 5rem);
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
}

.page-about .about-chapter-rule {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 2.2rem;
}

.page-about .about-chapter-num {
  font-family: var(--font-data);
  font-size: 0.9rem;
  color: var(--about-gold);
  letter-spacing: 0.1em;
}

.page-about .about-chapter-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--about-gold), var(--about-line));
}

.page-about .about-chapter-flag {
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--about-muted);
  white-space: nowrap;
}

.page-about .section-title {
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  font-weight: 900;
  line-height: 1.3;
  margin: 0 0 1.2rem;
  padding-left: 0.9rem;
  border-left: 5px solid var(--about-red);
}

/* ===== 01 品牌缘起 ===== */
.page-about .about-story__col {
  max-width: 740px;
  margin-left: auto;
  margin-right: auto;
}

.page-about .about-story__prose p {
  font-size: 1.02rem;
  line-height: 2;
  color: #2A3A33;
  margin: 0 0 1.6rem;
}

.page-about .about-story__prose p:first-child::first-letter {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 3.2em;
  line-height: 1;
  float: left;
  margin: 0.12em 0.12em 0 0;
  color: var(--about-green);
}

/* ===== 02 数据流水线 ===== */
.page-about .about-pipeline {
  background: #EFECE2;
}

.page-about .about-pipeline__head {
  margin-bottom: 1rem;
}

.page-about .about-pipeline__head .lede {
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-pipeline__content {
  display: grid;
  gap: 2rem;
}

.page-about .about-pipeline__steps {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-pipeline__steps li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: #FFFDF5;
  border: 1px solid var(--about-line);
  padding: 1.1rem 1.2rem;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.page-about .about-pipeline__steps li:hover {
  border-color: var(--about-gold);
  background: #FFFDF8;
}

.page-about .about-pipeline__steps .data-num {
  font-family: var(--font-data);
  font-size: 0.9rem;
  line-height: 1.2;
  color: var(--about-gold);
  border: 1px solid rgba(201, 162, 39, 0.55);
  padding: 0.25rem 0.45rem;
  transition: background 0.18s ease, color 0.18s ease;
}

.page-about .about-pipeline__steps li:hover .data-num {
  background: var(--about-gold);
  color: var(--about-green);
}

.page-about .about-pipeline__steps h3 {
  font-size: 1rem;
  font-weight: 800;
  margin: 0 0 0.3rem;
}

.page-about .about-pipeline__steps p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: #4B554F;
  margin: 0;
}

.page-about .about-pipeline__visual .image-frame {
  margin-bottom: 0.9rem;
}

.page-about .about-pipeline__legend {
  font-family: var(--font-data);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--about-green);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  padding: 0.7rem 0;
  margin: 0.4rem 0 0.9rem;
}

.page-about .about-pipeline__visual .meta-text {
  color: var(--about-muted);
  margin: 0;
}

/* ===== 03 亚新中路 ===== */
.page-about .about-zhonglu {
  background: var(--about-green);
  color: rgba(244, 241, 232, 0.92);
}

.page-about .about-zhonglu .about-chapter-rule .about-chapter-line {
  background: linear-gradient(90deg, var(--about-gold), rgba(244, 241, 232, 0.14));
}

.page-about .about-zhonglu .about-chapter-rule .about-chapter-flag {
  color: rgba(244, 241, 232, 0.58);
}

.page-about .about-zhonglu .section-title {
  color: var(--cream);
  border-left-color: var(--about-red);
}

.page-about .about-zhonglu__lede {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--about-gold-light);
  margin: 0 0 1.4rem;
}

.page-about .about-zhonglu__grid {
  display: grid;
  gap: 2.2rem;
  align-items: center;
}

.page-about .about-zhonglu__prose p {
  color: rgba(244, 241, 232, 0.88);
  line-height: 1.9;
  margin: 0 0 1.2rem;
}

.page-about .about-zhonglu__mock {
  background: var(--about-green-panel);
  border: 1px solid rgba(201, 162, 39, 0.3);
  padding: 1.2rem;
}

.page-about .about-zhonglu__mock-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--about-gold-light);
  border-bottom: 1px solid rgba(201, 162, 39, 0.25);
  padding-bottom: 0.8rem;
  margin-bottom: 1rem;
}

.page-about .about-zhonglu__mock-badge {
  font-family: var(--font-data);
  font-size: 0.72rem;
  color: var(--about-gold);
  border: 1px solid rgba(201, 162, 39, 0.4);
  padding: 0.2rem 0.45rem;
}

.page-about .about-zhonglu__mock-cols {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}

.page-about .about-zhonglu__mock-col {
  display: grid;
  gap: 0.45rem;
  align-content: start;
}

.page-about .about-zhonglu__mock-col span {
  font-size: 0.78rem;
  color: rgba(244, 241, 232, 0.62);
  letter-spacing: 0.06em;
}

.page-about .about-zhonglu__mock-col i {
  display: block;
  height: 6px;
  background: rgba(244, 241, 232, 0.1);
  margin-bottom: 0.5rem;
}

.page-about .about-zhonglu__mock-col i b {
  display: block;
  width: var(--bar);
  height: 100%;
  background: linear-gradient(90deg, var(--about-gold), var(--about-gold-light));
}

.page-about .about-zhonglu__mock-note {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: rgba(244, 241, 232, 0.5);
  margin: 1rem 0 0;
}

/* ===== 04 内容目录 ===== */
.page-about .about-dir__lede {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--about-green);
  margin: 0 0 2rem;
}

.page-about .page-about .grid-cols-3 {
  grid-template-columns: 1fr;
}

.page-about .about-dir__cards {
  margin: 0 0 2rem;
}

.page-about .about-dir-card {
  background: #FFFDF5;
  border: 1px solid var(--about-line);
  border-top: 3px solid var(--about-gold);
  padding: 1.4rem;
}

.page-about .about-dir-card .data-num {
  font-family: var(--font-data);
  font-size: 0.9rem;
  color: var(--about-gold);
}

.page-about .about-dir-card h3 {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0.5rem 0 0.6rem;
}

.page-about .about-dir-card p {
  font-size: 0.93rem;
  line-height: 1.8;
  color: #4B554F;
  margin: 0;
}

.page-about .about-dir__note {
  position: relative;
  background: var(--deep-green);
  color: var(--cream);
  padding: 1.6rem 1.8rem;
  max-width: 900px;
}

.page-about .about-dir__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: var(--red);
}

.page-about .about-dir__note p {
  line-height: 1.9;
  margin: 0;
}

/* ===== 05 里程碑 ===== */
.page-about .about-milestones {
  background: var(--about-green);
  color: var(--cream);
}

.page-about .about-milestones .about-chapter-rule .about-chapter-line {
  background: linear-gradient(90deg, var(--about-gold), rgba(244, 241, 232, 0.14));
}

.page-about .about-milestones .about-chapter-rule .about-chapter-flag {
  color: rgba(244, 241, 232, 0.58);
}

.page-about .about-milestones .section-title {
  color: var(--cream);
  border-left-color: var(--about-red);
}

.page-about .about-milestones__head .lede {
  color: rgba(244, 241, 232, 0.7);
  margin: 0;
}

.page-about .about-milestones__wrap {
  display: grid;
  gap: 2.5rem;
}

.page-about .about-timeline {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: rgba(201, 162, 39, 0.4);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 48px;
  padding-bottom: 1.8rem;
  min-height: 150px;
}

.page-about .about-timeline__dot {
  position: absolute;
  left: 0;
  top: 10px;
  width: 27px;
  height: 27px;
  border: 2px solid var(--about-gold);
  background: var(--about-green);
  transform: rotate(45deg);
  transition: background 0.18s ease;
}

.page-about .about-timeline__item:hover .about-timeline__dot {
  background: var(--about-gold);
}

.page-about .about-timeline__year {
  font-family: var(--font-data);
  font-size: 2rem;
  line-height: 1;
  margin: 0.4rem 0 0.8rem;
  color: rgba(230, 206, 126, 0.35);
  transition: color 0.18s ease;
}

.page-about .about-timeline__item:hover .about-timeline__year {
  color: var(--about-gold-light);
}

.page-about .about-timeline__year time {
  font-size: inherit;
}

.page-about .about-timeline__year::after {
  content: "年";
  font-size: 0.6em;
  vertical-align: super;
  margin-left: 0.2em;
  font-family: var(--font-head);
  color: rgba(201, 162, 39, 0.8);
}

.page-about .about-timeline__card h3 {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--cream);
  margin: 0 0 0.45rem;
}

.page-about .about-timeline__card > p {
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(244, 241, 232, 0.72);
  margin: 0;
}

.page-about .about-milestones__visual {
  align-self: start;
}

.page-about .about-milestones__caption {
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  color: rgba(244, 241, 232, 0.6);
  margin: 0.9rem 0 0;
}

.page-about .about-milestones__facts {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
}

.page-about .about-milestones__facts li {
  background: var(--about-green-panel);
  border-left: 3px solid var(--about-gold);
  padding: 0.7rem 0.9rem;
  font-size: 0.88rem;
  color: var(--cream);
}

.page-about .about-milestones__facts .data-num {
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--about-gold-light);
}

/* ===== 06 资质认证 ===== */
.page-about .about-trust__grid {
  display: grid;
  gap: 2.2rem;
  align-items: center;
}

.page-about .about-trust__text p {
  line-height: 1.9;
  margin: 0 0 1.2rem;
}

.page-about .about-trust__list {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-about .about-trust__list li {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: #EDE9DD;
  border: 1px solid var(--about-line);
  padding: 1rem 1.2rem;
}

.page-about .about-trust__list li span {
  font-family: var(--font-data);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  background: var(--deep-green);
  color: var(--about-gold-light);
  padding: 0.3rem 0.6rem;
  white-space: nowrap;
}

.page-about .about-trust__small {
  font-size: 0.88rem;
  color: var(--about-muted);
}

.page-about .about-trust__visual .image-frame {
  margin: 0;
}

/* ===== 收尾 ===== */
.page-about .about-colophon {
  background: #EFECE2;
  border-top: 1px solid var(--about-line);
}

.page-about .about-colophon__inner {
  padding-top: 2rem;
  padding-bottom: 2.4rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.page-about .about-colophon .note-text {
  color: var(--about-muted);
  margin: 0;
}

.page-about .about-colophon__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.page-about .about-colophon__links a {
  color: var(--about-green);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 162, 39, 0.5);
}

.page-about .about-colophon__links a:hover {
  background: var(--about-gold);
  color: var(--about-green);
  padding: 0 0.2em;
}

/* ===== 响应式 ===== */
@media (min-width: 680px) {
  .page-about .grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-about .about-frame {
    min-height: 480px;
  }

  .page-about .about-frame__bigword {
    position: absolute;
    right: -6px;
    bottom: 18px;
    z-index: 1;
    margin: 0;
    font-size: clamp(5rem, 10vw, 8.5rem);
    opacity: 0.9;
  }

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

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

  .page-about .about-pipeline__content {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .about-zhonglu__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
  }

  .page-about .about-milestones__wrap {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-trust__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

.page-about {
  --bar: 1rem;
}