/* ===== 品牌故事页专属样式 ===== */
.page-about {
  background: var(--paper);
  color: var(--ink);
}

/* 面包屑微调 */
.page-about .breadcrumbs {
  padding: 20px 0;
  border-bottom: 2px solid var(--still-gray);
}

/* ===== 首屏：主题声明 ===== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--deep-ice) 0%, var(--ice) 68%, var(--ice) 100%);
  color: var(--paper);
  padding: 56px 0 64px;
  border-bottom: 6px solid var(--flame);
}
.page-about .about-hero::before {
  content: "2015";
  position: absolute;
  right: -16px;
  bottom: 24px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 84px;
  line-height: 1;
  color: rgba(240, 244, 248, 0.05);
  pointer-events: none;
  white-space: nowrap;
}
.page-about .about-hero__intro {
  max-width: 760px;
}
.page-about .about-hero__kicker {
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--flame);
  border: 1px solid rgba(255, 77, 46, 0.6);
  background: rgba(255, 77, 46, 0.08);
  padding: 6px 12px;
  display: inline-block;
  margin-bottom: 20px;
}
.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: rgba(240, 244, 248, 0.88);
  margin: 0 0 28px;
}
.page-about .about-hero__toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.page-about .about-hero__toc a {
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(240, 244, 248, 0.85);
  border: 1px solid rgba(240, 244, 248, 0.35);
  padding: 8px 14px;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.page-about .about-hero__toc a:hover {
  border-color: var(--flame);
  color: var(--flame);
  background: rgba(255, 77, 46, 0.1);
}
.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 36px;
}
.page-about .about-hero__fact {
  background: rgba(240, 244, 248, 0.08);
  border: 2px solid rgba(240, 244, 248, 0.28);
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-about .about-hero__fact-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 22px;
  line-height: 1.1;
  color: var(--flame);
}
.page-about .about-hero__fact-label {
  font-family: var(--font-caption);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(240, 244, 248, 0.66);
}

/* ===== 01 品牌起源 ===== */
.page-about .about-origin {
  background: var(--light-ice);
  padding: 64px 0;
}
.page-about .about-origin .section-head {
  margin-bottom: 32px;
}
.page-about .about-origin__grid {
  display: grid;
  gap: 28px;
  align-items: start;
}
.page-about .about-origin__prose {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}
.page-about .about-origin__prose p + p {
  margin-top: 16px;
}
.page-about .about-origin__media {
  margin: 0;
}
.page-about .about-origin__img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
}
.page-about .about-origin__figcaption {
  margin-top: 10px;
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ice);
}

/* ===== 02 叙事理念 ===== */
.page-about .about-philosophy {
  background: var(--cream);
  padding: 64px 0;
}
.page-about .about-philosophy .section-head {
  margin-bottom: 32px;
}
.page-about .about-philosophy__grid {
  display: grid;
  gap: 28px;
}
.page-about .about-philosophy__prose {
  background: var(--cream);
  border: 2px solid var(--still-gray);
  box-shadow: var(--shadow-hard);
  padding: 28px;
}
.page-about .about-philosophy__prose p + p {
  margin-top: 16px;
}
.page-about .about-philosophy__prose a {
  color: var(--ice);
  font-weight: 700;
  text-decoration-color: var(--flame);
  text-underline-offset: 3px;
}
.page-about .about-philosophy__principles {
  display: grid;
  gap: 16px;
}
.page-about .about-philosophy__principle {
  position: relative;
  background: var(--light-ice);
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
  padding: 24px 24px 20px 68px;
}
.page-about .about-philosophy__principle-index {
  position: absolute;
  left: 16px;
  top: 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 28px;
  color: var(--flame);
}
.page-about .about-philosophy__principle h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 8px;
}
.page-about .about-philosophy__principle p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
}

/* ===== 03 发展里程碑 ===== */
.page-about .about-milestones {
  background: var(--light-ice);
  border-top: 2px solid var(--ice);
  padding: 64px 0 72px;
}
.page-about .about-milestones .section-head {
  margin-bottom: 36px;
}
.page-about .about-milestones__layout {
  display: grid;
  gap: 36px;
}
.page-about .about-milestones__timeline {
  position: relative;
  border-left: 2px solid var(--ice);
  padding-left: 28px;
}
.page-about .about-milestones__item {
  position: relative;
  padding: 16px 0;
}
.page-about .about-milestones__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 28px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--light-ice);
  border: 3px solid var(--ice);
  box-shadow: 0 0 0 2px var(--flame);
}
.page-about .about-milestones__item[open]::before {
  background: var(--flame);
}
.page-about .about-milestones__item summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
}
.page-about .about-milestones__item summary::-webkit-details-marker {
  display: none;
}
.page-about .about-milestones__item summary::after {
  content: "+";
  margin-left: auto;
  font-size: 24px;
  font-weight: 900;
  color: var(--flame);
  transition: transform 0.2s ease;
}
.page-about .about-milestones__item[open] summary::after {
  content: "−";
}
.page-about .about-milestones__year {
  font-weight: 900;
  font-size: 22px;
  color: var(--flame);
}
.page-about .about-milestones__title {
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}
.page-about .about-milestones__desc {
  margin-top: 12px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--cream);
  border: 2px solid var(--still-gray);
  padding: 14px 16px;
}
.page-about .about-milestones__media {
  margin: 0;
}
.page-about .about-milestones__img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
}
.page-about .about-milestones__caption {
  margin-top: 10px;
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ice);
}
.page-about .about-milestones__note {
  margin-top: 36px;
  font-family: var(--font-caption);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink);
  border-left: 4px solid var(--flame);
  padding-left: 14px;
}
.page-about .about-milestones__note a {
  color: var(--flame);
  font-weight: 700;
  text-underline-offset: 3px;
}

/* ===== 04 团队架构 ===== */
.page-about .about-team {
  background: var(--paper);
  padding: 64px 0;
}
.page-about .about-team .section-head {
  margin-bottom: 36px;
}
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}
.page-about .about-team__chart {
  background: var(--deep-ice);
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-deep);
  padding: 26px 24px 12px;
  color: var(--paper);
}
.page-about .about-team__chart-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 24px;
  color: var(--paper);
}
.page-about .about-team__bar {
  margin-bottom: 22px;
}
.page-about .about-team__bar-label {
  display: block;
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(240, 244, 248, 0.75);
  margin-bottom: 6px;
}
.page-about .about-team__bar-track {
  display: block;
  height: 26px;
  background: rgba(240, 244, 248, 0.1);
  border: 1px solid rgba(240, 244, 248, 0.25);
  overflow: hidden;
}
.page-about .about-team__bar-fill {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  min-width: 40px;
  height: 100%;
  padding-right: 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--paper);
  white-space: nowrap;
}
.page-about .about-team__bar-fill--content {
  background: var(--flame);
  width: 54%;
}
.page-about .about-team__bar-fill--tech {
  background: var(--ice);
  width: 27%;
}
.page-about .about-team__bar-fill--ops {
  background: var(--clay);
  width: 18%;
}
.page-about .about-team__detail {
  display: grid;
  gap: 16px;
}
.page-about .about-team__detail .panel-card {
  background: var(--light-ice);
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
  border-radius: 0;
  padding: 20px 22px;
}
.page-about .about-team__detail h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 8px;
}
.page-about .about-team__detail p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  margin: 0;
}
.page-about .about-team__media {
  margin: 0;
}
.page-about .about-team__img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
}
.page-about .about-team__media figcaption {
  margin-top: 10px;
  font-family: var(--font-caption);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ice);
}

@media (prefers-reduced-motion: no-preference) {
  .page-about .about-team__bar-fill {
    animation: about-bar-fade 0.9s ease-out both;
  }
}
@keyframes about-bar-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ===== 05 荣誉与资质 ===== */
.page-about .about-honors {
  background: var(--deep-ice);
  padding: 64px 0;
  border-top: 4px solid var(--flame);
}
.page-about .about-honors .label-index {
  color: var(--flame);
}
.page-about .about-honors .section-head__title {
  color: var(--paper);
}
.page-about .about-honors .section-head__lead {
  color: rgba(240, 244, 248, 0.72);
}
.page-about .about-honors__grid {
  display: grid;
  gap: 20px;
  margin-top: 32px;
}
.page-about .about-honors__card {
  background: var(--light-ice);
  border: 2px solid var(--ice);
  box-shadow: var(--shadow-hard);
  padding: 28px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.page-about .about-honors__badge {
  width: 100px;
  height: 100px;
  margin-bottom: 4px;
}
.page-about .about-honors__card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  margin: 0;
}
.page-about .about-honors__card p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  margin: 0;
}
.page-about .about-honors__card .tag {
  margin-top: 4px;
}
.page-about .about-honors__partners {
  margin-top: 36px;
  background: rgba(240, 244, 248, 0.06);
  border: 2px solid rgba(240, 244, 248, 0.2);
  padding: 24px;
}
.page-about .about-honors__partners h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--flame);
  margin: 0 0 10px;
}
.page-about .about-honors__partners p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(240, 244, 248, 0.85);
  margin: 0;
}
.page-about .about-honors__contact {
  margin-top: 28px;
  padding: 24px;
  border: 2px solid var(--flame);
  background: rgba(255, 77, 46, 0.08);
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
}
.page-about .about-honors__contact p {
  margin: 0;
}
.page-about .about-btn--accent {
  font-family: var(--font-caption);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 20px;
  border: 2px solid var(--flame);
  background: var(--flame);
  color: var(--paper);
  text-decoration: none;
  font-weight: 700;
  transition: background 0.2s ease, color 0.2s ease;
}
.page-about .about-btn--accent:hover {
  background: transparent;
  color: var(--flame);
}

/* ===== 平板 / 桌面 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 72px 0 80px;
  }
  .page-about .about-hero::before {
    font-size: 200px;
    right: -20px;
    bottom: 40px;
  }
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
  }
  .page-about .about-hero__fact-num {
    font-size: 28px;
  }
  .page-about .about-origin__grid {
    grid-template-columns: 5fr 6fr;
    gap: 40px;
    align-items: center;
  }
  .page-about .about-philosophy__grid {
    grid-template-columns: 5fr 6fr;
    gap: 40px;
    align-items: start;
  }
  .page-about .about-milestones__layout {
    grid-template-columns: 6fr 5fr;
    gap: 48px;
    align-items: start;
  }
  .page-about .about-team__grid {
    grid-template-columns: 5fr 6fr;
    gap: 36px;
    align-items: start;
  }
  .page-about .about-team__media {
    grid-column: 1 / -1;
    max-width: 720px;
    margin: 0 auto;
  }
  .page-about .about-honors__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-about .about-honors__contact {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}