/* ===== 品牌故事 /story/ ===== */

.page-about {
  --about-body: #4A473F;
  --about-body-soft: #6C675C;
  --about-gold-line: rgba(200, 162, 74, 0.22);
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .u-container {
  width: 100%;
  max-width: var(--shell-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4.5vw, 48px);
  box-sizing: border-box;
}

/* ---------- 首屏封面 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink);
  color: var(--ivory);
  padding-block: clamp(92px, 13vw, 152px) clamp(56px, 8vw, 96px);
}

.page-about .about-hero__glow {
  position: absolute;
  inset: -34% -12% -12% -22%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(46% 54% at 16% 32%, rgba(200, 162, 74, 0.30), transparent 68%),
    radial-gradient(44% 52% at 88% 6%, rgba(46, 81, 71, 0.88), transparent 72%),
    radial-gradient(58% 58% at 62% 102%, rgba(110, 31, 42, 0.22), transparent 70%);
  animation: about-breathe 15s var(--ease) infinite alternate;
}

@keyframes about-breathe {
  from { opacity: 0.78; }
  to { opacity: 1; }
}

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

.page-about .about-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 clamp(30px, 5vw, 52px);
  padding: 0;
  list-style: none;
}

.page-about .about-hero .breadcrumb__item,
.page-about .about-hero .breadcrumb__item a,
.page-about .about-hero .breadcrumb__sep {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(244, 239, 230, 0.55);
}

.page-about .about-hero .breadcrumb__item a:hover {
  color: var(--gold-bright);
}

.page-about .about-hero .breadcrumb__item[aria-current="page"] {
  color: var(--gold);
}

.page-about .about-hero__eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(18px, 3vw, 30px);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(38px, 6.4vw, 68px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

.page-about .about-hero__lead {
  max-width: 62ch;
  margin: 0 0 clamp(36px, 5.5vw, 60px);
  font-size: clamp(16px, 1.35vw, 17px);
  line-height: 1.9;
  color: rgba(244, 239, 230, 0.76);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: rgba(200, 162, 74, 0.22);
  border-top: 1px solid rgba(200, 162, 74, 0.28);
  border-bottom: 1px solid rgba(200, 162, 74, 0.28);
}

.page-about .about-hero__stat {
  background: var(--ink);
  padding: 20px 0 18px;
}

.page-about .about-hero__stat:nth-child(even) {
  padding-left: 20px;
}

.page-about .about-hero__stat dt {
  margin: 0 0 8px;
  font-family: var(--font-narrow);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-about .about-hero__stat dd {
  margin: 0;
  font-size: 15px;
  color: rgba(244, 239, 230, 0.88);
}

.page-about .about-hero__stat dd .u-num {
  font-family: var(--font-narrow);
  font-size: 28px;
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--gold);
  margin-right: 4px;
}

/* ---------- 章节通用 ---------- */

.page-about .about-chapter {
  position: relative;
  padding-block: clamp(64px, 8vw, 112px);
}

.page-about .about-chapter--dark {
  background: var(--ink-2);
  color: var(--ivory);
}

.page-about .about-chapter--flow {
  background: var(--green);
  color: var(--ivory);
}

.page-about .about-head {
  margin-bottom: clamp(36px, 5vw, 64px);
}

.page-about .about-head .section-head__lead {
  max-width: 60ch;
}

.page-about .about-chapter--dark .section-head__title,
.page-about .about-chapter--flow .section-head__title {
  color: var(--ivory);
}

.page-about .about-chapter--dark .section-head__lead,
.page-about .about-chapter--flow .section-head__lead {
  color: rgba(244, 239, 230, 0.7);
}

/* 编号字号逐章放大，形成阅读推进感 */
.page-about .about-chapter--origin .section-head__num { font-size: clamp(44px, 6vw, 62px); }
.page-about .about-chapter--timeline .section-head__num { font-size: clamp(48px, 6.6vw, 72px); }
.page-about .about-chapter--team .section-head__num { font-size: clamp(52px, 7.2vw, 80px); }
.page-about .about-chapter--flow .section-head__num { font-size: clamp(56px, 7.8vw, 88px); }
.page-about .about-chapter--scale .section-head__num { font-size: clamp(60px, 8.4vw, 94px); }
.page-about .about-chapter--partners .section-head__num { font-size: clamp(64px, 9vw, 104px); }

.page-about .section-head__num {
  font-family: var(--font-narrow);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: 0.04em;
  color: var(--gold);
  margin: 0 0 14px;
}

/* ---------- 01 品牌缘起 ---------- */

.page-about .about-origin {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-origin__body p {
  color: var(--about-body);
}

.page-about .about-origin__body p:first-child {
  margin-top: 0;
}

.page-about .about-origin__body p:first-child::first-letter {
  float: left;
  font-family: var(--font-serif);
  font-size: 3.1em;
  line-height: 0.84;
  padding: 8px 14px 0 0;
  color: var(--gold);
}

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

/* ---------- 02 时间线 ---------- */

.page-about .about-years {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-years__item {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: clamp(16px, 3vw, 44px);
  padding-block: clamp(20px, 2.6vw, 30px);
  border-top: 1px solid var(--about-gold-line);
}

.page-about .about-years__item:last-child {
  border-bottom: 1px solid var(--about-gold-line);
}

.page-about .about-years__marker {
  position: relative;
  padding-left: 20px;
}

.page-about .about-years__marker::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 13px;
  bottom: calc(-1 * clamp(20px, 2.6vw, 30px) - 1px);
  width: 1px;
  background: linear-gradient(to bottom, rgba(200, 162, 74, 0.5), rgba(200, 162, 74, 0.05));
}

.page-about .about-years__item:last-child .about-years__marker::before {
  background: linear-gradient(to bottom, rgba(200, 162, 74, 0.5), transparent);
}

.page-about .about-years__marker::after {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 162, 74, 0.12);
}

.page-about .about-years__year {
  display: block;
  font-family: var(--font-narrow);
  font-size: 20px;
  line-height: 1.1;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .about-years__panel .disclosure__summary {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ivory);
  letter-spacing: 0.01em;
}

.page-about .about-years__panel .disclosure__count {
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-about .about-years__panel .disclosure__body {
  color: rgba(244, 239, 230, 0.7);
}

.page-about .about-years__list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-years__list li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 10px;
  font-size: 15.5px;
  line-height: 1.82;
}

.page-about .about-years__list li:last-child {
  margin-bottom: 0;
}

.page-about .about-years__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 7px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 03 团队与分工 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

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

.page-about .about-team__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: 1px solid var(--sand);
}

.page-about .about-team__item {
  padding: 24px 0 22px;
  border-bottom: 1px solid var(--sand);
}

.page-about .about-team__count {
  display: block;
  font-family: var(--font-narrow);
  font-size: 30px;
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-about .about-team__role {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
}

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

/* ---------- 04 整理与校对流程 ---------- */

.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-flow__step {
  padding: 24px 0 26px;
  border-top: 1px solid rgba(200, 162, 74, 0.34);
}

.page-about .about-flow__step:last-child {
  border-bottom: 1px solid rgba(200, 162, 74, 0.34);
}

.page-about .about-flow__idx {
  display: block;
  font-family: var(--font-narrow);
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-about .about-flow__name {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ivory);
}

.page-about .about-flow__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.68);
}

/* ---------- 05 资料规模 ---------- */

.page-about .about-scale__figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
}

.page-about .about-scale__facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin: 0 0 clamp(32px, 4.5vw, 52px);
  border-top: 1px solid var(--sand);
}

.page-about .about-scale__fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 0 18px;
  border-bottom: 1px solid var(--sand);
}

.page-about .about-scale__num {
  font-family: var(--font-narrow);
  font-size: clamp(34px, 4.6vw, 52px);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-scale__label {
  font-size: 14.5px;
  letter-spacing: 0.02em;
  color: var(--about-body-soft);
}

.page-about .about-scale__ways-title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
}

.page-about .about-scale__ways-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--sand);
}

.page-about .about-scale__ways-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--sand);
}

.page-about .about-scale__way-name {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-about .about-scale__way-desc {
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-body-soft);
}

/* ---------- 06 合作与互引 ---------- */

.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 56px);
  align-items: start;
}

.page-about .about-partners__stat {
  padding: clamp(26px, 3.4vw, 40px) clamp(24px, 3vw, 36px);
  background: var(--green);
  border-radius: var(--radius-lg);
  color: var(--ivory);
}

.page-about .about-partners__num {
  display: block;
  font-family: var(--font-narrow);
  font-size: clamp(64px, 9vw, 96px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--gold);
  margin-bottom: 14px;
}

.page-about .about-partners__stat-label {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.8);
}

.page-about .about-partners__body p {
  color: var(--about-body);
}

.page-about .about-partners__body a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
  transition: color 200ms var(--ease);
}

.page-about .about-partners__body a:hover {
  color: var(--wine);
}

/* ---------- 结尾路径 ---------- */

.page-about .about-outro {
  background: var(--ink);
  color: var(--ivory);
  padding-block: clamp(60px, 8vw, 104px);
}

.page-about .about-outro__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-narrow);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about .about-outro__title {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 600;
  line-height: 1.3;
  color: var(--ivory);
}

.page-about .about-outro__lead {
  max-width: 54ch;
  margin: 0 0 clamp(28px, 4vw, 44px);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.7);
}

.page-about .about-outro__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-outro .btn--ghost {
  color: var(--ivory);
  border-color: rgba(200, 162, 74, 0.42);
}

.page-about .about-outro .btn--ghost:hover {
  color: var(--gold-bright);
  border-color: var(--gold);
}

/* ---------- 图像容器微调 ---------- */

.page-about .figure__frame {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
}

.page-about .figure__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform 620ms var(--ease);
}

.page-about .figure__frame:hover img {
  transform: scale(1.02);
}

.page-about .figure__caption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--grey);
}

.page-about .about-chapter--dark .figure__caption {
  color: rgba(244, 239, 230, 0.5);
}

/* ---------- 响应式 ---------- */

@media (max-width: 419px) {
  .page-about .about-years__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-about .about-years__marker {
    padding-left: 18px;
  }

  .page-about .about-years__marker::before {
    bottom: calc(-1 * clamp(20px, 2.6vw, 30px) + 4px);
  }

  .page-about .about-hero__stat:nth-child(even) {
    padding-left: 14px;
  }
}

@media (min-width: 620px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-team__item:nth-child(odd) {
    padding-right: 30px;
    border-right: 1px solid var(--sand);
  }

  .page-about .about-team__item:nth-child(even) {
    padding-left: 30px;
  }

  .page-about .about-scale__ways-list li {
    padding: 18px 0;
  }
}

@media (min-width: 700px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-hero__stat {
    padding: 26px 0 24px;
  }

  .page-about .about-hero__stat:nth-child(even) {
    padding-left: 0;
  }

  .page-about .about-hero__stat + .about-hero__stat {
    padding-left: 24px;
  }

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

  .page-about .about-scale__fact {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 28px 28px 26px 0;
    border-bottom: 0;
    border-right: 1px solid var(--sand);
  }

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

  .page-about .about-scale__ways-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 32px;
  }

  .page-about .about-scale__ways-list li {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    border-bottom: 0;
    border-top: 2px solid var(--gold);
    padding: 18px 0 0;
  }
}

@media (min-width: 860px) {
  .page-about .about-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-flow__step {
    padding: 28px 24px 0 0;
    border-bottom: 0;
  }

  .page-about .about-flow__step:last-child {
    border-bottom: 0;
    padding-right: 0;
  }
}

@media (min-width: 900px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: clamp(36px, 5vw, 64px);
  }

  .page-about .about-team__figure {
    position: sticky;
    top: 104px;
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    gap: clamp(36px, 5vw, 72px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__glow {
    animation: none;
  }

  .page-about .figure__frame img,
  .page-about .about-partners__body a {
    transition: none;
  }

  .page-about .figure__frame:hover img {
    transform: none;
  }

  .page-about [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}