/* ===== 品牌档案 / profile ===== */
.page-about {
  --about-line: 2px;
  --about-band-radius: 16px;
  background: var(--paper-000);
  color: var(--ink-900);
}

.page-about .crumbs {
  padding-top: 18px;
}

/* ---------- 档案封皮 ---------- */
.page-about .about-cover {
  padding: 18px 0 42px;
}

.page-about .about-cover__inner {
  border-top: var(--about-line) solid var(--ink-900);
  padding-top: 26px;
}

.page-about .about-cover__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-cover__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8.2vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.03em;
  color: var(--ink-900);
}

.page-about .about-cover__title em {
  font-style: normal;
  color: var(--ember-500);
}

.page-about .about-cover__lead {
  margin: 22px 0 0;
  max-width: 560px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-700);
}

.page-about .about-cover__visual {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--ink-900);
  box-shadow: var(--shadow-card);
}

.page-about .about-cover__visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-cover__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 30px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--rule-300);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-500);
}

.page-about .about-cover__meta b {
  margin-left: 4px;
  font-weight: 600;
  color: var(--ink-900);
}

/* ---------- 目录抽屉 + 正文 ---------- */
.page-about .about-layout {
  display: grid;
  gap: 30px;
  padding-bottom: 72px;
}

.page-about .about-toc {
  border: 1px solid var(--rule-300);
  border-radius: var(--radius-card);
  background: var(--paper-100);
  padding: 18px 14px;
}

.page-about .about-toc__title {
  margin: 0 0 12px;
  padding-left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-500);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 3px solid transparent;
  border-radius: 12px;
  font-size: 14.5px;
  color: var(--ink-700);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-toc__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ember-700);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  background: var(--white);
  color: var(--ink-900);
  border-left-color: var(--ember-500);
  outline: none;
}

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding-bottom: 48px;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--rule-300);
  padding-top: 40px;
}

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-section__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ember-700);
}

.page-about .about-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.6vw, 32px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-about .about-section h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-section p {
  margin: 0 0 14px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-700);
}

.page-about .about-section a {
  color: var(--ember-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-section a:hover {
  color: var(--ember-500);
}

.page-about .about-section p.about-sidenote {
  margin: 18px 0 0;
  padding: 10px 0 10px 14px;
  border-left: 3px solid var(--gold-300);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--ink-500);
}

/* ---------- 横向图条 ---------- */
.page-about .about-band {
  margin: 22px 0 30px;
  border: 1px solid var(--rule-300);
  border-radius: var(--about-band-radius);
  overflow: hidden;
  background: var(--paper-100);
}

.page-about .about-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  position: relative;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--ember-500), var(--gold-300) 52%, var(--rule-300));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 30px 42px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 5px;
  box-sizing: content-box;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-pill);
  background: var(--gold-300);
  border: 3px solid var(--paper-000);
  box-shadow: 0 0 0 2px var(--ember-500);
}

.page-about .about-timeline__no {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ember-700);
}

.page-about .about-timeline__body .tag {
  margin-top: 4px;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}

/* ---------- 团队分工 ---------- */
.page-about .about-roles {
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
}

.page-about .about-role {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-top: 1px solid var(--rule-300);
}

.page-about .about-role__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ember-700);
}

.page-about .about-role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-700);
}

/* ---------- 维护节奏 ---------- */
.page-about .about-cadence {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .about-cadence__item {
  border: 1px solid var(--rule-300);
  border-radius: 18px;
  background: var(--paper-100);
  padding: 18px 16px;
}

.page-about .about-cadence__cycle {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--ember-100);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ember-700);
}

.page-about .about-section .about-cadence__name {
  margin: 12px 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-about .about-section .about-cadence__item p {
  margin: 0;
  max-width: none;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- 状态标记 ---------- */
.page-about .about-marks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
  padding-bottom: 10px;
}

.page-about .about-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--rule-300);
  border-radius: var(--radius-pill);
  background: var(--paper-100);
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-900);
  cursor: default;
  outline-offset: 3px;
}

.page-about .about-mark::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--dot, var(--ink-500));
}

.page-about .about-mark--mint { --dot: var(--mint-400); }
.page-about .about-mark--gold { --dot: var(--gold-300); }
.page-about .about-mark--ember { --dot: var(--ember-500); }
.page-about .about-mark--ink { --dot: var(--ink-700); }
.page-about .about-mark--neutral { --dot: var(--ink-500); }

.page-about .about-mark__pop {
  position: absolute;
  left: 0;
  top: calc(100% + 10px);
  z-index: 9;
  width: max-content;
  max-width: min(240px, calc(100vw - 64px));
  padding: 10px 12px;
  border-radius: 14px;
  background: var(--ink-900);
  color: var(--paper-000);
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s linear;
  pointer-events: none;
}

.page-about .about-mark__pop::before {
  content: "";
  position: absolute;
  left: 16px;
  top: -5px;
  width: 10px;
  height: 10px;
  background: var(--ink-900);
  transform: rotate(45deg);
}

.page-about .about-mark:hover .about-mark__pop,
.page-about .about-mark:focus .about-mark__pop,
.page-about .about-mark:focus-visible .about-mark__pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- 栏目共建 ---------- */
.page-about .about-partner-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-about .about-partner-list li {
  padding: 12px 0;
  border-top: 1px solid var(--rule-300);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-partner-list b {
  display: inline-block;
  min-width: 92px;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ember-700);
}

/* ---------- 起步路径 ---------- */
.page-about .about-path {
  display: grid;
  gap: 18px;
  margin-top: 22px;
}

.page-about .about-path__item {
  border: 1px solid var(--rule-300);
  border-radius: var(--radius-card);
  background: var(--white);
  padding: 22px 20px;
}

.page-about .about-path__tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--paper-000);
}

.page-about .about-path__tag--ember {
  background: var(--ember-500);
  color: var(--white);
}

.page-about .about-section .about-path__item h3 {
  margin: 14px 0 10px;
  font-size: 17px;
}

.page-about .about-path__item ol {
  margin: 0;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-700);
}

.page-about .about-path__item li {
  margin-bottom: 8px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

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

@media (min-width: 620px) {
  .page-about .about-role {
    grid-template-columns: 40px minmax(0, 1fr);
    column-gap: 18px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 56px;
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-about .about-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 60px;
    padding-top: 12px;
  }

  .page-about .about-toc {
    position: sticky;
    top: var(--toc-top);
    align-self: start;
    max-height: calc(100vh - var(--toc-top) - 24px);
    overflow: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-toc__list a,
  .page-about .about-mark__pop {
    transition-duration: 0.12s;
  }

  .page-about .about-mark__pop {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>