.page-about {
  --about-line: rgba(28, 36, 48, 0.14);
  --about-line-dark: rgba(232, 238, 245, 0.2);
  background: var(--fog);
  color: var(--graphite);
  font-family: var(--font-body);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  margin: 0;
}

.page-about h2 {
  font-size: clamp(1.55rem, 4.6vw, 2.4rem);
}

.page-about h3 {
  font-size: 1.02rem;
}

.page-about p {
  margin: 0;
}

.page-about a {
  color: var(--blue);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  padding: 1rem 0 0.5rem;
  font-size: 0.82rem;
  color: var(--steel);
}

.page-about .about-crumbs a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 59, 109, 0.28);
}

.page-about .about-crumbs a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  margin-top: 0.6rem;
  padding: clamp(1.8rem, 5.5vw, 3.4rem) 0 clamp(2.4rem, 7vw, 3.8rem);
  color: var(--fog);
  background:
    linear-gradient(135deg, rgba(232, 84, 0, 0.2) 0%, rgba(232, 84, 0, 0) 44%),
    radial-gradient(circle at 88% 12%, rgba(255, 107, 26, 0.22), transparent 58%),
    var(--navy);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: clamp(1rem, 4vw, 1.8rem);
  right: clamp(1rem, 4vw, 2.4rem);
  width: 92px;
  height: 68px;
  background: repeating-linear-gradient(90deg, rgba(255, 107, 26, 0.85) 0 2px, transparent 2px 12px);
  opacity: 0.55;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.4rem, 4vw, 2.4rem);
}

.page-about .about-hero .eyebrow {
  color: var(--orange);
}

.page-about .about-hero h1 {
  margin-top: 0.7rem;
  font-size: clamp(2.1rem, 7vw, 3.9rem);
  color: var(--fog);
  letter-spacing: -0.01em;
}

.page-about .about-hero h1 em {
  display: block;
  font-style: normal;
  color: var(--orange);
}

.page-about .about-hero__lead {
  margin-top: 1.1rem;
  max-width: 54ch;
  font-size: clamp(1rem, 2.5vw, 1.08rem);
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.86);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1.6rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--about-line-dark);
}

.page-about .about-fact__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.35rem, 6vw, 2.2rem);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--orange);
}

.page-about .about-fact__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.76rem;
  line-height: 1.45;
  color: rgba(247, 249, 252, 0.72);
}

.page-about .about-hero__panel {
  background: var(--fog);
  color: var(--graphite);
  padding: 1.15rem 1.2rem 1.35rem;
  align-self: start;
  border-top: 4px solid var(--orange);
  box-shadow: var(--shadow-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-hero__panel-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.98rem;
  color: var(--navy);
  margin-bottom: 0.8rem;
}

.page-about .about-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.93rem;
  line-height: 1.6;
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.page-about .about-list a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 59, 109, 0.25);
}

.page-about .about-list a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

.page-about .about-hero__panel-note {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--about-line);
  font-size: 0.78rem;
  color: var(--steel);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding: clamp(2.4rem, 6.5vw, 4.6rem) 0;
}

.page-about .about-sec--plain {
  background: var(--fog);
}

.page-about .about-sec--mist {
  background: var(--mist);
}

.page-about .about-sec--dark {
  background: var(--blue);
  color: var(--fog);
}

.page-about .about-sec--deep {
  background: var(--navy);
  color: var(--fog);
}

.page-about .about-sec--dark .eyebrow,
.page-about .about-sec--deep .eyebrow {
  color: var(--orange);
}

.page-about .about-head {
  max-width: 58ch;
  margin-bottom: clamp(1.4rem, 4vw, 2.2rem);
}

.page-about .about-head h2 {
  margin-top: 0.55rem;
}

.page-about .about-head__note {
  margin-top: 0.8rem;
  font-size: 0.96rem;
  color: var(--steel);
}

.page-about .about-sec--dark .about-head__note,
.page-about .about-sec--deep .about-head__note {
  color: rgba(247, 249, 252, 0.72);
}

/* ---------- 起点与定位 ---------- */
.page-about .about-start {
  display: grid;
  gap: clamp(1.2rem, 3.5vw, 2.4rem);
}

.page-about .about-start__lead p {
  margin-top: 0.9rem;
  font-size: 0.98rem;
  line-height: 1.85;
}

.page-about .about-start__aside {
  padding: 1.1rem 1.15rem 1.2rem;
  background: var(--mist);
  border-left: 5px solid var(--orange);
}

.page-about .about-start__aside-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.95rem;
  color: var(--navy);
}

.page-about .about-pain {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-pain li {
  position: relative;
  padding-left: 1.15rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--graphite);
}

.page-about .about-pain li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 0.55rem;
  height: 2px;
  background: var(--ember);
}

/* ---------- 时间轴 ---------- */
.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-tl__item {
  position: relative;
  display: grid;
  gap: 0.3rem;
  padding: 1.05rem 0 1.15rem 2.9rem;
  border-bottom: 1px dashed var(--about-line-dark);
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, rgba(255, 107, 26, 0.9), rgba(255, 107, 26, 0.12));
}

.page-about .about-tl__item::after {
  content: "";
  position: absolute;
  left: calc(1.15rem - 5px);
  top: 1.5rem;
  width: 12px;
  height: 12px;
  background: var(--orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .about-tl__item--now::after {
  background: var(--fog);
  box-shadow: 0 0 0 3px rgba(255, 107, 26, 0.6);
}

.page-about .about-tl__year {
  font-family: var(--font-num);
  font-size: clamp(1.6rem, 6vw, 2.3rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-about .about-tl__body h3 {
  color: var(--fog);
}

.page-about .about-tl__body p {
  margin-top: 0.35rem;
  font-size: 0.92rem;
  line-height: 1.75;
  color: rgba(247, 249, 252, 0.76);
}

/* ---------- 区域网络 ---------- */
.page-about .about-network {
  display: grid;
  gap: clamp(1.2rem, 3.5vw, 2rem);
}

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

.page-about .region-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.6rem;
}

.page-about .region-grid li {
  padding: 0.8rem 0.9rem 0.9rem;
  background: var(--fog);
  border: 1px solid rgba(18, 59, 109, 0.16);
  border-left: 4px solid var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-about .region-grid li:nth-child(3n) {
  border-left-color: var(--orange);
}

.page-about .region-grid strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1rem;
  color: var(--navy);
}

.page-about .region-grid span {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.79rem;
  line-height: 1.55;
  color: var(--steel);
}

/* ---------- 内容工程 ---------- */
.page-about .about-content__figure {
  margin: 0 0 clamp(1.2rem, 3.5vw, 1.8rem);
}

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .about-flow__step {
  padding: 1.1rem 1.2rem 1.3rem;
  background: var(--fog);
  border: 1px solid var(--about-line);
  border-top: 4px solid var(--orange);
  box-shadow: var(--shadow-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-flow__num {
  display: block;
  font-family: var(--font-num);
  font-size: 2rem;
  line-height: 1;
  color: var(--orange);
  margin-bottom: 0.5rem;
}

.page-about .about-flow__step h3 {
  color: var(--navy);
}

.page-about .about-flow__step p {
  margin-top: 0.4rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .about-note {
  margin-top: 1.4rem;
  padding-left: 1.1rem;
  border-left: 4px solid var(--blue);
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--steel);
}

.page-about .about-note a {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(18, 59, 109, 0.3);
}

.page-about .about-note a:hover {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ---------- 培训认证 ---------- */
.page-about .about-train {
  display: grid;
  gap: clamp(1.2rem, 3.5vw, 2.2rem);
}

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

.page-about .about-train__body h2 {
  margin-top: 0.55rem;
}

.page-about .about-train__lead {
  margin-top: 0.8rem;
  font-size: 0.96rem;
  color: var(--steel);
}

.page-about .about-levels {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-about .about-levels li {
  display: grid;
  gap: 0.25rem;
  padding: 0.8rem 1rem 0.9rem;
  background: var(--fog);
  border-left: 4px solid var(--orange);
}

.page-about .about-levels__tag {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--ember);
}

.page-about .about-levels p {
  font-size: 0.9rem;
  line-height: 1.7;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 2px solid rgba(18, 59, 109, 0.18);
}

.page-about .about-stats b {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(1.3rem, 5.5vw, 1.9rem);
  line-height: 1;
  color: var(--blue);
}

.page-about .about-stats span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.76rem;
  line-height: 1.45;
  color: var(--steel);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-about .about-eco__item {
  position: relative;
  padding: 1.1rem 1.15rem 1.25rem;
  background: var(--mist);
  border-bottom: 4px solid var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 16px), calc(100% - 16px) 100%, 0 100%);
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(1.8rem, 7vw, 2.5rem);
  line-height: 1;
  color: var(--orange);
  margin-bottom: 0.35rem;
}

.page-about .about-eco__item h3 {
  color: var(--navy);
}

.page-about .about-eco__item p {
  margin-top: 0.4rem;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--graphite);
}

.page-about .about-honors {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--about-line);
}

.page-about .about-honors span {
  padding: 0.38rem 0.75rem;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--navy);
  background: var(--fog);
  border: 1px solid rgba(18, 59, 109, 0.2);
  border-left: 3px solid var(--signal);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

/* ---------- 质量保障 ---------- */
.page-about .about-quality {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.page-about .about-quality > div {
  padding: 0.95rem 1rem 1.05rem;
  background: rgba(232, 238, 245, 0.08);
  border: 1px solid var(--about-line-dark);
  border-top: 3px solid var(--orange);
}

.page-about .about-quality b {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(1.35rem, 5.5vw, 2rem);
  line-height: 1;
  color: var(--orange);
}

.page-about .about-quality span {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.78rem;
  line-height: 1.45;
  color: rgba(247, 249, 252, 0.74);
}

.page-about .about-quality__note {
  margin-top: 1.2rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(247, 249, 252, 0.82);
}

.page-about .about-quality__note a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 26, 0.5);
}

.page-about .about-quality__note a:hover {
  color: var(--fog);
  border-bottom-color: var(--fog);
}

.page-about .about-cta {
  margin-top: clamp(1.4rem, 4vw, 2rem);
  padding: 1.2rem 1.2rem 1.35rem;
  background: rgba(255, 107, 26, 0.1);
  border: 1px solid rgba(255, 107, 26, 0.38);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .about-cta p {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 3.6vw, 1.35rem);
  line-height: 1.4;
  color: var(--fog);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

/* ---------- 媒体框微调 ---------- */
.page-about .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame__caption {
  font-size: 0.78rem;
  line-height: 1.6;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-about .region-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-quality {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.55fr 0.95fr;
    align-items: start;
  }

  .page-about .about-start {
    grid-template-columns: 1.45fr 0.9fr;
    align-items: start;
  }

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

  .page-about .about-train {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

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

  .page-about .about-tl__item {
    grid-template-columns: 8.5rem 1fr;
    gap: 1.4rem;
    align-items: start;
    padding-left: 3.4rem;
  }

  .page-about .about-tl__item::after {
    top: 1.9rem;
  }

  .page-about .about-network {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }

  .page-about .region-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .region-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-hero__panel {
    padding: 1.35rem 1.4rem 1.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>