.page-about .about-hero {
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-hero-copy h1 {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.8vw, 42px);
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero-art {
  position: relative;
  width: 100%;
  max-width: 400px;
  margin-inline: auto;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  overflow: hidden;
  background:
    radial-gradient(circle at 32% 28%, rgba(53, 224, 214, .22), transparent 58%),
    radial-gradient(circle at 78% 76%, rgba(255, 138, 61, .16), transparent 58%),
    var(--navy-950);
}

.page-about .art-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(44, 62, 112, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(44, 62, 112, .55) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .55;
}

.page-about .art-orbit {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
}

.page-about .art-orbit--1 {
  width: 60%;
  height: 60%;
  border: 1px solid rgba(53, 224, 214, .42);
}

.page-about .art-orbit--2 {
  width: 86%;
  height: 86%;
  border: 1px dashed rgba(159, 176, 214, .32);
}

.page-about .art-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 22%;
  height: 22%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, var(--cyan) 0%, rgba(53, 224, 214, .08) 72%);
  box-shadow: 0 0 42px rgba(53, 224, 214, .48);
}

.page-about .art-node {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.page-about .art-node--a {
  top: 18%;
  left: 30%;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 138, 61, .16);
}

.page-about .art-node--b {
  top: 66%;
  left: 76%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(53, 224, 214, .16);
}

.page-about .art-node--c {
  top: 80%;
  left: 22%;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 138, 61, .16);
}

.page-about .about-head {
  max-width: 720px;
  margin-bottom: 38px;
}

.page-about .about-head--tight {
  margin-bottom: 30px;
}

/* 服务范围 */
.page-about .about-scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .paper-card {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #FBF8F2;
  padding: 22px 22px 20px;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}

.page-about .paper-card:hover {
  transform: translateY(-4px);
  border-color: var(--cyan-deep);
  box-shadow: var(--shadow-lift);
}

.page-about .about-scope-card h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--ink);
}

.page-about .about-scope-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 40px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan-deep);
}

.page-about .about-num small {
  font-size: 17px;
  font-weight: 600;
  margin-left: 3px;
}

/* 时间轴 */
.page-about .about-timeline-wrap {
  display: grid;
  gap: 34px;
}

.page-about .about-tl-figure {
  margin: 0;
}

.page-about .about-tl-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  object-fit: cover;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(53, 224, 214, .08) 100%);
}

.page-about .about-timeline > li {
  position: relative;
  padding: 0 0 30px 34px;
}

.page-about .about-timeline > li:last-child {
  padding-bottom: 0;
}

.page-about .about-timeline > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--navy-950);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 5px rgba(53, 224, 214, .1);
}

.page-about .tl-year {
  display: block;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: .05em;
  color: var(--cyan);
  margin-bottom: 4px;
}

.page-about .tl-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  color: var(--on-dark);
}

.page-about .tl-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 整理标准 */
.page-about .about-standard-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .std-key {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan-deep);
  border: 1px solid rgba(14, 127, 123, .38);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 10px;
}

.page-about .about-standard-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-standard-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-deep);
  padding-left: 16px;
  border-left: 3px solid var(--orange);
  max-width: 44em;
}

/* 团队 */
.page-about .team-bar {
  display: flex;
  height: 40px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--navy-line);
  margin-bottom: 28px;
}

.page-about .bar-seg {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--navy-950);
  overflow: hidden;
  white-space: nowrap;
}

.page-about .bar-seg--edit { background: var(--cyan); }
.page-about .bar-seg--write { background: var(--orange); }
.page-about .bar-seg--local { background: var(--mist); }
.page-about .bar-seg--support { background: var(--cyan-deep); color: var(--paper); }

.page-about .about-team-tabs .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.page-about .about-team-tabs [role="tab"] {
  appearance: none;
  background: var(--navy-700);
  border: 1px solid var(--navy-line);
  color: var(--mist);
  padding: 9px 16px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.4;
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-team-tabs [role="tab"]:hover {
  border-color: var(--cyan);
  color: var(--on-dark);
}

.page-about .about-team-tabs [role="tab"][aria-selected="true"] {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--navy-950);
  font-weight: 600;
}

.page-about .about-team-tabs [role="tab"]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .about-panel {
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  background: var(--navy-700);
  padding: 22px 22px 20px;
}

.page-about .about-panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark);
  max-width: 44em;
}

.page-about .panel-count {
  font-family: var(--font-mono) !important;
  font-size: 13px !important;
  letter-spacing: .08em;
  color: var(--cyan) !important;
  margin-bottom: 10px !important;
}

/* 发布节奏 */
.page-about .about-process-wrap {
  display: grid;
  gap: 30px;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-steps li {
  display: flex;
  gap: 16px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #FBF8F2;
  padding: 20px;
}

.page-about .step-index {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--cyan-deep);
  padding-top: 3px;
  flex: 0 0 auto;
}

.page-about .about-steps h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .about-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-process-figure {
  margin: 0;
}

.page-about .about-process-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--paper-line);
  object-fit: cover;
}

.page-about .about-process-foot {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist-deep);
  padding-left: 16px;
  border-left: 3px solid var(--orange);
  max-width: 44em;
}

/* 合作与荣誉 */
.page-about .about-partner-wrap {
  display: grid;
  gap: 28px;
}

.page-about .about-partner-figure {
  margin: 0;
}

.page-about .about-partner-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  object-fit: cover;
}

.page-about .about-partner-side {
  display: grid;
  gap: 16px;
}

.page-about .partner-stat {
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  background: var(--navy-700);
  padding: 20px;
}

.page-about .partner-num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 38px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .partner-label {
  margin: 8px 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--on-dark);
}

.page-about .partner-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-honor {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-honor li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  border-left: 3px solid var(--orange);
  padding: 8px 0 8px 16px;
}

.page-about .honor-year {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: .05em;
  color: var(--orange);
}

.page-about .honor-text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--on-dark);
}

/* 长期使用 */
.page-about .about-long-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-long-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
}

.page-about .about-long-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-deep);
}

.page-about .about-long-cta {
  margin-top: 32px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: #FBF8F2;
  padding: 24px 22px;
}

.page-about .about-long-cta p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  max-width: 44em;
}

.page-about .about-long-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 640px) {
  .page-about .about-scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

@media (min-width: 860px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 52px;
  }

  .page-about .about-timeline-wrap {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-timeline > li {
    display: grid;
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 0 18px;
    padding-left: 40px;
  }

  .page-about .tl-year {
    margin-bottom: 0;
  }

  .page-about .about-process-wrap {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-partner-wrap {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 36px;
    align-items: start;
  }

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

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

@media (min-width: 1080px) {
  .page-about .about-tl-figure {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 520px) {
  .page-about .bar-seg {
    font-size: 0;
  }

  .page-about .about-num {
    font-size: 34px;
  }

  .page-about .partner-num {
    font-size: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .paper-card {
    transition: none;
  }

  .page-about .paper-card:hover {
    transform: none;
  }
}