/* ============ 牌室档案 / company ============ */
.page-about {
  position: relative;
  background:
    radial-gradient(1180px 600px at 90% -10%, rgba(226, 169, 59, 0.10), transparent 62%),
    radial-gradient(880px 520px at 2% 38%, rgba(86, 183, 201, 0.07), transparent 60%),
    var(--ink-green);
  color: var(--porcelain);
  overflow-x: clip;
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(46px, 7.5vw, 96px) 0 clamp(42px, 6.5vw, 84px);
  border-bottom: var(--line-copper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -16%;
  top: -36%;
  width: 56%;
  height: 172%;
  background: linear-gradient(158deg,
      rgba(138, 106, 47, 0.32) 0%,
      rgba(226, 169, 59, 0.13) 44%,
      rgba(10, 42, 33, 0) 78%);
  border-left: 1px solid rgba(226, 169, 59, 0.28);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg,
      rgba(226, 169, 59, 0.75) 0 2px,
      transparent 2px 28px);
  pointer-events: none;
}

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

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-about .about-hero-label {
  color: var(--amber);
}

.page-about .about-hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.2vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 16px 0 0;
  max-width: 16em;
  color: var(--porcelain);
}

.page-about .about-hero-lead {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(15.5px, 1.05vw, 18px);
  line-height: 1.9;
  color: rgba(243, 239, 228, 0.84);
}

.page-about .about-hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(28px, 4vw, 48px);
  max-width: 760px;
  background: rgba(138, 106, 47, 0.42);
  border: var(--line-copper);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-hero-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(18, 59, 47, 0.94);
  padding: 16px 16px 18px;
}

.page-about .about-hero-fact .num {
  font-size: clamp(20px, 2.1vw, 26px);
  color: var(--amber);
  line-height: 1.1;
}

.page-about .about-hero-fact .label {
  color: var(--ash);
}

/* ---------- 章节头部 ---------- */
.page-about .about-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding-top: clamp(8px, 1.4vw, 18px);
  border-top: var(--line-copper);
}

.page-about .about-head .chapter-num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.2vw, 62px);
  font-weight: 600;
  line-height: 0.9;
  color: transparent;
  -webkit-text-stroke: 1px rgba(226, 169, 59, 0.72);
  letter-spacing: 0.02em;
}

.page-about .about-head-body .label {
  color: var(--amber);
}

.page-about .about-head-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.3vw, 40px);
  line-height: 1.22;
  letter-spacing: -0.015em;
  margin: 10px 0 0;
  max-width: 20em;
  color: var(--porcelain);
}

.page-about .about-head-intro {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.76);
}

/* ---------- 01 三段归档期 ---------- */
.page-about .about-eras {
  background: linear-gradient(180deg, rgba(18, 59, 47, 0.32) 0%, rgba(10, 42, 33, 0) 42%);
}

.page-about .about-timeline {
  position: relative;
  margin-top: clamp(26px, 3.8vw, 46px);
  padding-left: 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg,
      var(--amber) 0%,
      rgba(138, 106, 47, 0.55) 44%,
      rgba(138, 106, 47, 0.12) 100%);
}

.page-about .about-era {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px) clamp(16px, 2.4vw, 28px);
  border: var(--line-copper);
  border-radius: var(--radius);
  background: rgba(18, 59, 47, 0.86);
  box-shadow: var(--shadow-paper);
}

.page-about .about-era + .about-era {
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-era::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-green);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px rgba(226, 169, 59, 0.12);
}

.page-about .about-era:nth-child(3) {
  background: rgba(26, 74, 59, 0.82);
}

.page-about .about-era:nth-child(5) {
  background: rgba(28, 78, 99, 0.42);
}

.page-about .about-era-meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-about .about-era-meta .label {
  color: var(--amber);
}

.page-about .about-era-code {
  font-size: 14px;
  color: var(--ash);
}

.page-about .about-era-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.2vw, 27px);
  line-height: 1.34;
  margin: 12px 0 0;
  color: var(--porcelain);
}

.page-about .about-era-body {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(243, 239, 228, 0.76);
}

.page-about .about-era-stats {
  list-style: none;
  margin: 20px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed rgba(138, 106, 47, 0.5);
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px 24px;
}

.page-about .about-era-stats li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .about-era-stats .num {
  font-size: 15px;
  color: var(--gold);
}

.page-about .about-era-stats .text-ash {
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

/* ---------- 图片通用 ---------- */
.page-about .about-figure {
  margin: clamp(22px, 3.4vw, 42px) 0 0;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--ash);
}

.page-about .about-figure--flush {
  margin-top: clamp(26px, 4vw, 52px);
}

/* ---------- 02 团队 ---------- */
.page-about .about-crew-grid {
  margin-top: clamp(26px, 3.8vw, 46px);
}

.page-about .about-crew-list {
  border-top: var(--line-copper);
}

.page-about .about-crew-item {
  display: grid;
  grid-template-columns: 34px 1fr auto;
  grid-template-areas:
    "idx role count"
    "txt txt  txt";
  align-items: baseline;
  gap: 8px 14px;
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-bottom: 1px solid rgba(138, 106, 47, 0.34);
  transition: background 0.2s var(--ease);
}

.page-about .about-crew-item:hover {
  background: rgba(26, 74, 59, 0.42);
}

.page-about .about-crew-idx {
  grid-area: idx;
  font-size: 13px;
  color: var(--amber);
}

.page-about .about-crew-role {
  grid-area: role;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.3;
  margin: 0;
  color: var(--porcelain);
}

.page-about .about-crew-count {
  grid-area: count;
  font-size: 13px;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .about-crew-text {
  grid-area: txt;
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.74);
}

.page-about .about-crew-aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.page-about .about-crew-note {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
}

.page-about .about-crew-note .label {
  color: var(--amber);
}

.page-about .about-crew-note-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.42;
  margin: 10px 0 0;
  color: var(--porcelain);
}

.page-about .about-crew-note-body {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(243, 239, 228, 0.74);
}

.page-about .about-crew-note .corner-chip {
  margin-top: 16px;
}

/* ---------- 03 统计说明 ---------- */
.page-about .about-metrics {
  background: linear-gradient(180deg, rgba(28, 78, 99, 0.18) 0%, rgba(10, 42, 33, 0) 46%);
}

.page-about .about-metric-block {
  margin-top: clamp(26px, 3.8vw, 46px);
  align-items: start;
}

.page-about .about-metric-list {
  margin: 0;
  border-top: var(--line-copper);
}

.page-about .about-metric-row {
  padding: clamp(16px, 2.2vw, 22px) 0;
  border-bottom: 1px solid rgba(138, 106, 47, 0.32);
}

.page-about .about-metric-row dt {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 1.8vw, 21px);
  color: var(--porcelain);
}

.page-about .about-metric-row dt .label {
  color: var(--amber);
}

.page-about .about-metric-row dd {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.76);
}

.page-about .about-factors {
  list-style: none;
  margin: clamp(24px, 3.2vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(138, 106, 47, 0.34);
  border: var(--line-copper);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-factor {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: start;
  background: rgba(18, 59, 47, 0.9);
  padding: 14px 16px;
}

.page-about .about-factor .label {
  color: var(--gold);
  padding-top: 3px;
}

.page-about .about-factor p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(243, 239, 228, 0.78);
}

.page-about .about-rings {
  border: var(--line-copper);
  border-radius: var(--radius);
  background: rgba(18, 59, 47, 0.72);
  padding: clamp(18px, 2.4vw, 26px);
  box-shadow: var(--shadow-paper);
}

.page-about .about-rings > .label {
  color: var(--amber);
}

.page-about .about-ring-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-ring-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 14px;
  border-bottom: 1px dashed rgba(138, 106, 47, 0.32);
}

.page-about .about-ring-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-ring {
  width: 72px;
  height: 72px;
  flex: 0 0 auto;
}

.page-about .about-ring-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-ring-text strong {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--porcelain);
}

.page-about .about-ring-text .text-ash {
  font-size: 12.5px;
  letter-spacing: 0.06em;
  font-family: var(--font-mono);
}

.page-about .about-rings-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(138, 106, 47, 0.3);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ash);
}

/* ---------- 04 更新节奏 ---------- */
.page-about .about-cadence-block {
  margin-top: clamp(26px, 3.8vw, 46px);
  align-items: start;
}

.page-about .about-cadence-chart {
  border: var(--line-copper);
  border-radius: var(--radius);
  background: rgba(18, 59, 47, 0.68);
  padding: clamp(16px, 2.2vw, 24px);
}

.page-about .about-cadence-chart > .label {
  color: var(--amber);
}

.page-about .about-chart {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 14px;
}

.page-about .about-chart-caption {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(138, 106, 47, 0.3);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ash);
}

.page-about .about-cadence-copy {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-about .about-threshold {
  border-left: 3px solid rgba(226, 169, 59, 0.78);
  padding: 4px 0 4px clamp(14px, 1.8vw, 20px);
}

.page-about .about-threshold .label {
  color: var(--amber);
}

.page-about .about-threshold h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 1.7vw, 21px);
  line-height: 1.36;
  margin: 10px 0 0;
  color: var(--porcelain);
}

.page-about .about-threshold p {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.76);
}

/* ---------- 05 生态 ---------- */
.page-about .about-eco {
  background: linear-gradient(180deg, rgba(26, 74, 59, 0.22) 0%, rgba(10, 42, 33, 0) 50%);
}

.page-about .about-eco-grid {
  margin-top: clamp(26px, 3.8vw, 46px);
}

.page-about .about-eco-line {
  display: flex;
  flex-direction: column;
  padding: clamp(18px, 2.4vw, 26px);
  border: var(--line-copper);
  border-radius: var(--radius);
  background: rgba(18, 59, 47, 0.8);
  box-shadow: var(--shadow-paper);
}

.page-about .about-eco-line .label {
  color: var(--amber);
}

.page-about .about-eco-line h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(18px, 1.8vw, 22px);
  line-height: 1.32;
  margin: 12px 0 0;
  color: var(--porcelain);
}

.page-about .about-eco-line p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.76);
}

.page-about .about-eco-points {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed rgba(138, 106, 47, 0.5);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-eco-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.76;
  color: rgba(243, 239, 228, 0.72);
}

.page-about .about-eco-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 1px;
  background: var(--amber);
}

.page-about .about-steps {
  margin-top: clamp(26px, 3.6vw, 44px);
  padding-top: clamp(20px, 2.6vw, 30px);
  border-top: var(--line-copper);
}

.page-about .about-steps > .label {
  color: var(--amber);
}

.page-about .about-step-list {
  list-style: none;
  counter-reset: step;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 30px 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgba(138, 106, 47, 0.42);
  border-radius: var(--radius);
  background: rgba(10, 42, 33, 0.62);
}

.page-about .about-step .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid rgba(226, 169, 59, 0.65);
  color: var(--amber);
  font-size: 13px;
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(243, 239, 228, 0.78);
}

/* ---------- 06 里程碑 ---------- */
.page-about .about-milestone-grid {
  list-style: none;
  margin: clamp(26px, 3.8vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(138, 106, 47, 0.34);
  border: var(--line-copper);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-milestone {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: clamp(16px, 2.2vw, 24px);
  background: rgba(18, 59, 47, 0.9);
  transition: background 0.2s var(--ease);
}

.page-about .about-milestone:hover {
  background: rgba(26, 74, 59, 0.92);
}

.page-about .about-milestone-num {
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.14;
  color: var(--amber);
}

.page-about .about-milestone .label {
  color: var(--ash);
}

.page-about .about-milestone p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.78;
  color: rgba(243, 239, 228, 0.72);
}

.page-about .about-column-note {
  margin-top: clamp(26px, 3.6vw, 44px);
  padding: clamp(20px, 2.8vw, 32px);
  border: var(--line-amber);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(226, 169, 59, 0.12) 0%, rgba(18, 59, 47, 0.86) 46%, rgba(10, 42, 33, 0.9) 100%);
}

.page-about .about-column-note .label {
  color: var(--amber);
}

.page-about .about-column-note h3 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.1vw, 26px);
  line-height: 1.32;
  margin: 12px 0 0;
  max-width: 22em;
  color: var(--porcelain);
}

.page-about .about-column-note p {
  margin: 12px 0 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.88;
  color: rgba(243, 239, 228, 0.78);
}

.page-about .about-column-note .btn {
  margin-top: 20px;
}

.page-about .about-closing {
  margin-top: clamp(28px, 4vw, 52px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px dashed rgba(138, 106, 47, 0.5);
}

.page-about .about-closing-text {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(243, 239, 228, 0.8);
}

.page-about .about-closing-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 触屏与悬停 ---------- */
@media (hover: hover) {
  .page-about .about-era {
    transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease);
  }

  .page-about .about-era:hover {
    transform: translateY(-2px) rotate(-0.25deg);
    box-shadow: var(--shadow-paper), 0 0 0 1px rgba(226, 169, 59, 0.34);
  }

  .page-about .about-eco-line,
  .page-about .about-rings {
    transition: transform 0.28s var(--ease);
  }

  .page-about .about-eco-line:hover,
  .page-about .about-rings:hover {
    transform: translateY(-3px);
  }
}

/* ---------- 600px ---------- */
@media (min-width: 600px) {
  .page-about .about-era-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-era-stats li {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

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

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

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

/* ---------- 820px ---------- */
@media (min-width: 820px) {
  .page-about .about-head {
    grid-template-columns: minmax(96px, 140px) 1fr;
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline::before {
    left: 14px;
    width: 3px;
  }

  .page-about .about-era::before {
    left: -40px;
    width: 20px;
    height: 20px;
    top: 26px;
  }

  .page-about .about-crew-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
    gap: clamp(24px, 3.4vw, 46px);
    align-items: start;
  }

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

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

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

/* ---------- 980px ---------- */
@media (min-width: 980px) {
  .page-about .about-hero-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-metric-block {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-cadence-block {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
    gap: clamp(28px, 4vw, 56px);
  }

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