.page-about {
  --about-gap: clamp(56px, 9vw, 108px);
  --about-line: var(--rule);
  background: var(--paper);
  color: var(--slate);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: clamp(16px, 3vw, 28px);
}
.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--slate-soft);
}
.page-about .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--rule-strong);
}
.page-about .breadcrumb-list a {
  color: var(--archive);
  text-decoration: none;
}
.page-about .breadcrumb-list a:hover {
  text-decoration: underline;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  padding: clamp(14px, 2.6vw, 26px) 0 var(--about-gap);
}
.page-about .hero-frame {
  position: relative;
  padding: clamp(30px, 5vw, 54px) clamp(20px, 4vw, 48px) clamp(28px, 4vw, 46px);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background:
    radial-gradient(rgba(85, 82, 75, 0.07) 1px, transparent 1px) 0 0 / 4px 4px,
    linear-gradient(180deg, rgba(228, 196, 138, 0.26), rgba(244, 239, 228, 0) 64%),
    var(--card);
  box-shadow: var(--shadow-1);
}
.page-about .hero-frame::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(18px, 4vw, 44px);
  right: clamp(18px, 4vw, 44px);
  height: 12px;
  background-image: repeating-linear-gradient(90deg, var(--sand) 0 1px, transparent 1px 15px);
  opacity: 0.6;
  pointer-events: none;
}
.page-about .hero-frame::after {
  content: "";
  position: absolute;
  left: -1px;
  bottom: -1px;
  width: 56px;
  height: 56px;
  border-left: 2px solid var(--goji);
  border-bottom: 2px solid var(--goji);
  border-radius: 0 0 0 var(--radius);
  pointer-events: none;
}
.page-about .hero-frame .eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--sand-deep);
}
.page-about h1 {
  margin: 0 0 20px;
  max-width: 14ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-stretch: condensed;
  font-size: clamp(30px, 5.4vw, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-about .hero-frame .lede {
  margin: 0;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 38px);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--rule);
  overflow: hidden;
}
.page-about .stat {
  background: var(--card);
  padding: 18px 16px 20px;
}
.page-about .stat-num {
  display: block;
  font-size: clamp(21px, 2.8vw, 28px);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-about .stat-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--slate-soft);
}

/* ---------- 区块标题组 ---------- */
.page-about .section-head {
  max-width: 54ch;
  margin-bottom: clamp(28px, 4vw, 46px);
}
.page-about .section-head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--sand-deep);
}
.page-about .section-head h2,
.page-about .band-head h2,
.page-about .about-close h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-stretch: condensed;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.page-about .section-head .lede,
.page-about .band-head .lede {
  margin: 0;
  max-width: 48ch;
  font-size: 17px;
  line-height: 1.85;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  padding-bottom: var(--about-gap);
}
.page-about .timeline {
  --tl-line: 9px;
  --tl-inset: 44px;
  position: relative;
  padding-left: var(--tl-inset);
}
.page-about .timeline::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-line) - 1px);
  top: 12px;
  bottom: 12px;
  width: 2px;
  background-image: repeating-linear-gradient(180deg, var(--sand) 0 6px, transparent 6px 13px);
  opacity: 0.65;
  pointer-events: none;
}
.page-about .tl-item {
  position: relative;
  margin-bottom: clamp(26px, 4vw, 44px);
}
.page-about .tl-item:last-child {
  margin-bottom: 0;
}
.page-about .tl-node {
  position: absolute;
  top: 22px;
  left: calc(var(--tl-line) - var(--tl-inset) - 7px);
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: var(--dune);
  box-shadow: 0 0 0 1.5px var(--sand);
  transition: background-color 0.32s var(--ease), box-shadow 0.32s var(--ease);
}
.page-about .tl-item.is-in .tl-node {
  background: var(--sand-deep);
  box-shadow: 0 0 0 1.5px var(--sand-deep), 0 0 0 7px rgba(200, 154, 82, 0.16);
}
.page-about .tl-card {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow-1);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease);
}
.page-about .tl-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}
.page-about .tl-year {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 9px;
  border-radius: 2px;
  background: rgba(200, 154, 82, 0.18);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--sand-deep);
}
.page-about .tl-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.2vw, 21px);
  line-height: 1.35;
  color: var(--ink);
}
.page-about .tl-card p {
  margin: 0;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.85;
}

/* ---------- 图片通用 ---------- */
.page-about .figure {
  margin: 0;
}
.page-about .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}
.page-about .figure-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate-soft);
}
.page-about .tl-figure {
  margin-top: 18px;
}

/* ---------- 排单流程横带 ---------- */
.page-about .about-flow {
  margin-bottom: var(--about-gap);
  padding: clamp(46px, 7vw, 86px) 0 clamp(42px, 6vw, 76px);
  background:
    radial-gradient(rgba(251, 248, 240, 0.07) 1px, transparent 1px) 0 0 / 5px 5px,
    linear-gradient(135deg, #221E19 0%, #2C2721 58%, #1B1813 100%);
  color: #E9E3D6;
}
.page-about .band-head {
  max-width: 56ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}
.page-about .band-head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--dune);
}
.page-about .band-head h2 {
  color: #FBF8F0;
}
.page-about .band-head .lede {
  color: rgba(251, 248, 240, 0.72);
}

.page-about .flow-track {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid rgba(251, 248, 240, 0.16);
  border-radius: var(--radius);
  background: rgba(251, 248, 240, 0.16);
  overflow: hidden;
}
.page-about .flow-step {
  position: relative;
  padding: 24px 20px 26px;
  background: rgba(251, 248, 240, 0.035);
  transition: background-color 0.26s var(--ease), transform 0.26s var(--ease);
}
.page-about .flow-step:hover {
  background: rgba(200, 154, 82, 0.16);
  transform: translateY(-2px);
}
.page-about .flow-idx {
  display: block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--sand);
}
.page-about .flow-step h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.4;
  color: #FBF8F0;
}
.page-about .flow-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(251, 248, 240, 0.72);
}
.page-about .flow-note {
  display: block;
  margin-top: 14px;
  padding-left: 10px;
  border-left: 2px solid var(--silt);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--dune);
}

/* ---------- 师傅考核 ---------- */
.page-about .about-seals {
  padding-bottom: var(--about-gap);
}
.page-about .seal-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 44px);
}
.page-about .seal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .seal-item {
  padding: 26px 20px 24px;
  border: 1px dashed var(--rule-strong);
  border-radius: var(--radius);
  background: var(--card);
  text-align: center;
}
.page-about .seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 84px;
  height: 84px;
  border: 2px solid var(--goji);
  border-radius: 50%;
  background: rgba(166, 58, 48, 0.05);
  box-shadow: inset 0 0 0 4px rgba(166, 58, 48, 0.09);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--goji);
  transform: rotate(-6deg);
  transition: transform 0.3s var(--ease);
}
.page-about .seal-item:hover .seal {
  transform: rotate(3deg);
}
.page-about .seal-item h3 {
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}
.page-about .seal-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}
.page-about .seal-figure {
  position: relative;
}
.page-about .seal-figure::before {
  content: "";
  position: absolute;
  inset: 14px 0 -14px 14px;
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  z-index: 0;
  pointer-events: none;
}
.page-about .seal-figure img,
.page-about .seal-figure .figure-caption {
  position: relative;
  z-index: 1;
}

/* ---------- 规矩与承诺 ---------- */
.page-about .about-rules {
  padding-bottom: var(--about-gap);
}
.page-about .rules-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 38px);
}
.page-about .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--card);
}
.page-about .data-table {
  width: 100%;
  min-width: 320px;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 15px;
}
.page-about .data-table caption {
  padding: 15px 16px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-align: left;
  color: var(--slate-soft);
}
.page-about .data-table th,
.page-about .data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}
.page-about .data-table thead th {
  background: rgba(228, 196, 138, 0.24);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.page-about .data-table tbody tr:nth-child(even) {
  background: rgba(228, 196, 138, 0.1);
}
.page-about .data-table tbody tr:last-child td {
  border-bottom: 0;
}
.page-about .data-table .num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  white-space: nowrap;
}

.page-about .rules-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .rule-card {
  padding: 20px 22px 22px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--archive);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--card);
}
.page-about .rule-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--ink);
}
.page-about .rule-card p {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding-bottom: var(--about-gap);
}
.page-about .partner-figure {
  margin-bottom: clamp(30px, 4.4vw, 48px);
}
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--rule);
  overflow: hidden;
}
.page-about .partner-card {
  padding: 26px 22px 28px;
  background: var(--card);
  transition: background-color 0.26s var(--ease);
}
.page-about .partner-card:hover {
  background: rgba(228, 196, 138, 0.2);
}
.page-about .partner-num {
  display: inline-block;
  padding: 4px 11px;
  border-radius: 2px;
  background: var(--sand);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--ink);
  transform: rotate(-1.5deg);
  box-shadow: var(--shadow-sticker);
}
.page-about .partner-card h3 {
  margin: 18px 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--ink);
}
.page-about .partner-card p {
  margin: 0;
  max-width: 36ch;
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 收尾 ---------- */
.page-about .about-close {
  padding: clamp(48px, 7vw, 88px) 0 var(--about-gap);
  border-top: 1px solid var(--rule);
  background: linear-gradient(180deg, rgba(228, 196, 138, 0.3), rgba(244, 239, 228, 0) 78%);
}
.page-about .about-close .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--sand-deep);
}
.page-about .about-close p {
  margin: 0 0 26px;
  max-width: 44ch;
  font-size: 17px;
  line-height: 1.85;
}
.page-about .close-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 30px;
}
.page-about .close-link {
  display: block;
  padding: 16px 18px 18px;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--card);
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.26s var(--ease), box-shadow 0.26s var(--ease), border-color 0.26s var(--ease);
}
.page-about .close-link:hover {
  transform: translateY(-2px);
  border-color: var(--sand);
  box-shadow: var(--shadow-2);
}
.page-about .close-link:focus-visible {
  outline: 2px solid var(--goji);
  outline-offset: 2px;
}
.page-about .close-link strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
}
.page-about .close-link span {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-soft);
}
.page-about .about-contact {
  margin: 0;
  padding: 18px 20px;
  border-left: 3px solid var(--goji);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--card);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .seal-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .close-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .flow-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .timeline {
    --tl-line: 23px;
    --tl-inset: 76px;
  }
  .page-about .seal-layout {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: center;
  }
  .page-about .seal-figure {
    margin-top: -22px;
  }
}

@media (min-width: 960px) {
  .page-about .rules-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .flow-track {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-card,
  .page-about .tl-node,
  .page-about .flow-step,
  .page-about .seal,
  .page-about .partner-card,
  .page-about .close-link {
    transition: none;
  }
  .page-about .tl-card:hover,
  .page-about .flow-step:hover,
  .page-about .close-link:hover {
    transform: none;
  }
  .page-about .seal-item:hover .seal {
    transform: rotate(-6deg);
  }
}