.page-about {
  background: var(--pitch);
  color: var(--white);
}

.page-about [id] {
  scroll-margin-top: 5rem;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  padding: 1.1rem 0 .5rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-crumb a {
  color: var(--muted);
  text-decoration: none;
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--accent);
}

/* ---------- 刊头 ---------- */
.page-about .about-masthead {
  padding: .4rem 0 2.75rem;
}

.page-about .about-masthead-grid {
  display: grid;
  gap: 1.25rem;
  padding: 1.6rem 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

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

.page-about .about-side .num {
  color: var(--accent);
  font-size: .95rem;
  margin-left: .35rem;
}

.page-about .about-masthead h1 {
  margin: 0 0 .95rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 7.4vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  text-wrap: balance;
}

.page-about .about-lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(.98rem, 1.6vw, 1.12rem);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero {
  margin: 0 0 3rem;
}

.page-about .about-hero .media-frame {
  width: 100%;
}

/* ---------- 章节目录 ---------- */
.page-about .about-index {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--pitch);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-index-list {
  display: flex;
  gap: 1.6rem;
  margin: 0;
  padding: .7rem 0;
  list-style: none;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.page-about .about-index-list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index-list a {
  display: inline-block;
  padding-bottom: 2px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 通用标题 ---------- */
.page-about h2 {
  margin: 0 0 .85rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.4vw, 2.4rem);
  line-height: 1.18;
  letter-spacing: -.015em;
}

.page-about .about-band-title::after {
  content: "";
  display: block;
  width: 68px;
  height: 5px;
  margin-top: .75rem;
  background: linear-gradient(90deg, var(--season-1), var(--season-2), var(--accent));
}

.page-about .about-sub {
  margin: 0;
  max-width: 66ch;
  color: var(--muted);
  line-height: 1.8;
}

/* ---------- 官方坐标 ---------- */
.page-about .about-coord {
  padding: 3rem 0 3.5rem;
}

.page-about .about-coord-grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-coord-head {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 12vw, 4.6rem);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--accent);
  transform: scaleX(.94);
  transform-origin: left center;
}

.page-about .about-coord-body p {
  margin: 0 0 1.1em;
  line-height: 1.8;
}

.page-about .about-coord-body p:last-child {
  margin-bottom: 0;
  color: var(--muted);
}

/* ---------- 四块面板 ---------- */
.page-about .about-panels {
  padding-bottom: 3.5rem;
}

.page-about .about-panel-list {
  display: grid;
  gap: 0;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-panel {
  display: grid;
  gap: .5rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-panel-no {
  font-size: .85rem;
  letter-spacing: .1em;
  color: var(--accent);
}

.page-about .about-panel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-about .about-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

/* ---------- 三个资料阶段 ---------- */
.page-about .about-stages {
  padding-bottom: 3.5rem;
  border-top: 1px solid var(--line);
}

.page-about .about-stages-intro {
  display: grid;
  gap: 2rem;
  padding-top: 2.75rem;
  margin-bottom: 2.5rem;
}

.page-about .about-stages-copy p {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
  line-height: 1.8;
}

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

.page-about .about-axis {
  display: grid;
  gap: 2rem;
  margin: 0;
  padding: 2.25rem 0 0;
  list-style: none;
  border-top: 1px solid var(--line-strong);
}

.page-about .about-node {
  position: relative;
}

.page-about .about-node-ring {
  display: block;
  width: 40px;
  height: 40px;
  margin-bottom: .9rem;
}

.page-about .about-node-ring svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-about .about-ring-core {
  fill: var(--pitch);
  stroke: none;
}

.page-about .about-ring-track {
  fill: none;
  stroke: var(--line-strong);
  stroke-width: 2;
}

.page-about .about-ring-fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 126;
  animation: about-ring-draw .75s var(--ease) both;
}

.page-about .about-axis > .about-node:nth-child(2) .about-ring-fill {
  animation-delay: .09s;
}

.page-about .about-axis > .about-node:nth-child(3) .about-ring-fill {
  animation-delay: .18s;
}

@keyframes about-ring-draw {
  from { stroke-dashoffset: 126; }
  to { stroke-dashoffset: 0; }
}

.page-about .about-node-era {
  margin: 0 0 .4rem;
  color: var(--amber);
}

.page-about .about-node h3 {
  margin: 0 0 .55rem;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 800;
}

.page-about .about-node p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

/* ---------- 三条工作线 ---------- */
.page-about .about-lines {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-lines-grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}

.page-about .about-lines-media {
  margin: 0;
}

.page-about .about-lines-cards {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-line {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-line .label {
  margin: 0 0 .45rem;
  color: var(--accent);
}

.page-about .about-line h3 {
  margin: 0 0 .5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
}

.page-about .about-line p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.page-about .about-numbers {
  display: grid;
  gap: 1px;
  margin-top: 2.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-number {
  display: flex;
  flex-direction: column;
  gap: .45rem;
  padding: 1.3rem 1.2rem;
  background: var(--panel);
}

.page-about .about-number .num {
  font-size: clamp(1.8rem, 5.4vw, 2.8rem);
  line-height: 1;
  color: var(--accent);
}

.page-about .about-number > span:last-child {
  font-size: .84rem;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 判罚与赔率 ---------- */
.page-about .about-records {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-records-grid {
  display: grid;
  gap: 1px;
  margin-top: 2rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-record {
  padding: 1.6rem 1.4rem;
  background: var(--panel-soft);
}

.page-about .about-record h3 {
  margin: 0 0 .65rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 800;
}

.page-about .about-record p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-records-link {
  margin: 1.6rem 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-records-link a,
.page-about .about-region-facts a {
  color: var(--accent-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-about .about-records-link a:hover,
.page-about .about-records-link a:focus-visible,
.page-about .about-region-facts a:hover,
.page-about .about-region-facts a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- 陕西运营 ---------- */
.page-about .about-region {
  padding: 3.5rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-region-facts {
  display: grid;
  gap: 1px;
  margin: 2rem 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-region-facts > div {
  padding: 1.1rem 1.2rem;
  background: var(--panel);
}

.page-about .about-region-facts dt {
  margin: 0 0 .4rem;
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-region-facts dd {
  margin: 0;
  font-size: .95rem;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  padding: 3.5rem 0 4.5rem;
  border-top: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(30, 92, 58, 0) 0%, rgba(30, 92, 58, .18) 100%);
}

.page-about .about-close p {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-about .about-close-links {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.7rem;
}

/* ---------- 图片基础保障 ---------- */
.page-about img {
  max-width: 100%;
  height: auto;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-numbers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-masthead-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 3.2fr) minmax(0, 1fr);
    align-items: start;
    gap: 2.5rem;
  }

  .page-about .about-side--end {
    text-align: right;
  }

  .page-about .about-coord-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-panel-list {
    grid-template-columns: 1.15fr .85fr 1fr 1fr;
  }

  .page-about .about-panel {
    padding: 1.6rem 1.4rem;
    border-bottom: none;
    border-left: 1px solid var(--line);
  }

  .page-about .about-panel:first-child {
    padding-left: 0;
    border-left: none;
  }

  .page-about .about-panel:last-child {
    padding-right: 0;
  }

  .page-about .about-stages-intro {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: 3rem;
  }

  .page-about .about-axis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2.5rem;
  }

  .page-about .about-axis::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 2.25rem;
    height: 1px;
    background: var(--line-strong);
  }

  .page-about .about-axis {
    position: relative;
  }

  .page-about .about-node-ring {
    position: relative;
    z-index: 1;
  }

  .page-about .about-lines-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
    gap: 3rem;
  }

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

@media (min-width: 1100px) {
  .page-about .about-numbers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-ring-fill {
    animation: none;
    stroke-dashoffset: 0;
  }

  .page-about .about-index-list a {
    transition: none;
  }
}