/* ================= 品牌档案 /company/ ================= */

.page-about {
  --about-cut: 16px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding: 20px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 56px;
  background:
    repeating-linear-gradient(180deg, rgba(17, 19, 24, .035) 0 1px, transparent 1px 32px),
    radial-gradient(120% 90% at 90% -10%, rgba(24, 224, 200, .18), transparent 60%),
    linear-gradient(180deg, #F8F8F3 0%, #ECECE4 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -52px;
  width: 280px;
  height: 132px;
  background: var(--amber);
  opacity: .18;
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__title {
  margin: 12px 0 18px;
  font-size: clamp(36px, 6.2vw, 72px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-hero__lede {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--graphite);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: 24px 22px 16px;
  background: var(--ink);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-hero__panel-label {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .about-hero__facts {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(245, 245, 240, .18);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(245, 245, 240, .12);
}

.page-about .about-hero__fact-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--on-ink-soft);
}

.page-about .about-hero__fact-value {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: 46px 0 74px;
}

.page-about .about-body__grid {
  display: grid;
  gap: 34px;
}

/* ---------- 分区 ---------- */
.page-about .about-section {
  padding-top: 30px;
  border-top: 2px solid var(--ink);
}

.page-about .about-section + .about-section {
  margin-top: 54px;
}

.page-about .about-section__idx {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-deep);
}

.page-about .about-section__title {
  margin: 0 0 14px;
  font-size: clamp(23px, 3.2vw, 33px);
  font-weight: 400;
  line-height: 1.26;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-about .about-section > p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-section--ink {
  padding: 30px 24px 34px;
  border-top: 2px solid var(--amber);
  background: var(--ink);
}

.page-about .about-section--ink .about-section__idx {
  color: var(--cyan);
}

.page-about .about-section--ink .about-section__title {
  color: #FFFFFF;
}

.page-about .about-section--ink > p {
  color: rgba(245, 245, 240, .70);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.page-about .about-filter__btn {
  appearance: none;
  padding: 7px 15px;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.4;
  color: var(--graphite);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-filter__btn:hover,
.page-about .about-filter__btn:focus-visible,
.page-about .about-filter__btn.is-active {
  background: var(--cyan-soft);
  border-color: var(--cyan-deep);
  color: var(--ink);
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  position: relative;
  padding: 18px 20px 20px 22px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-left: 5px solid var(--graphite);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-role:hover {
  box-shadow: 0 6px 18px rgba(17, 19, 24, .07);
}

.page-about .about-role--rule { border-left-color: var(--cyan); }
.page-about .about-role--edit { border-left-color: var(--amber); }
.page-about .about-role--support { border-left-color: var(--cyan-deep); }
.page-about .about-role--tech { border-left-color: var(--graphite); }

.page-about .about-role__num {
  display: block;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-role__name {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .about-role .about-role__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--graphite);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 26px 0 4px;
}

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

.page-about .about-figure .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .about-figure--ink .figure__frame {
  background: var(--paper);
}

.page-about .about-figure--ink .figure__caption {
  color: rgba(245, 245, 240, .58);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  margin: 26px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
  border-left: 2px dashed var(--line-strong);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 14px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 17px;
  width: 11px;
  height: 11px;
  background: var(--paper);
  border: 2px solid var(--ink);
  transform: rotate(45deg);
}

.page-about .about-timeline__item:first-child::before {
  background: var(--amber);
}

.page-about .about-tl {
  background: #FFFFFF;
  border: 1px solid var(--line);
}

.page-about .about-tl__summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 44px 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-tl__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--cyan-deep);
}

.page-about .about-tl[open] .about-tl__summary::after {
  content: "−";
}

.page-about .about-tl__summary:hover {
  background: var(--paper-2);
}

.page-about .about-tl__year {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}

.page-about .about-tl__label {
  padding: 3px 9px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--ink);
  background: var(--amber-soft);
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
}

.page-about .about-tl__head {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-tl__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-about .about-tl__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

/* ---------- 校订流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(245, 245, 240, .18);
  border: 1px solid rgba(245, 245, 240, .18);
}

.page-about .about-flow__step {
  padding: 20px 18px 22px;
  background: #1A1E26;
}

.page-about .about-flow__idx {
  display: block;
  margin-bottom: 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-flow__step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: #FFFFFF;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: rgba(245, 245, 240, .66);
}

.page-about .about-notes {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px dashed rgba(245, 245, 240, .24);
}

.page-about .about-notes__title {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-about .about-notes__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-notes__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-notes__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 245, 240, .74);
}

.page-about .about-section--ink .tag--muted {
  color: rgba(245, 245, 240, .8);
  border-color: rgba(245, 245, 240, .38);
}

/* ---------- 内容协作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-partner {
  padding: 20px 20px 22px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-top: 4px solid var(--cyan-deep);
}

.page-about .about-partner--award {
  border-top-color: var(--amber);
  background: linear-gradient(180deg, #FFFDF7 0%, #FFFFFF 62%);
}

.page-about .about-partner__num {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-partner__name {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--graphite);
}

/* ---------- 地区与备案 ---------- */
.page-about .about-region__icp {
  padding: 2px 6px;
  background: var(--paper-2);
  border-left: 3px solid var(--cyan-deep);
  font-size: 15px;
}

.page-about .about-region__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 侧批注栏 ---------- */
.page-about .about-rail__sticky {
  display: grid;
  gap: 16px;
}

.page-about .about-rail__card {
  padding: 16px 16px 18px;
  background: var(--paper-2);
  border-left: 3px solid var(--cyan-deep);
}

.page-about .about-rail__card--ticks {
  border-left-color: var(--amber);
}

.page-about .about-rail__label {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--graphite);
}

.page-about .about-rail__version {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-rail__big {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-rail__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.66;
  color: var(--graphite);
}

.page-about .about-rail__ticks {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 3px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__ticks li {
  height: 13px;
  background: var(--cyan-soft);
  border-bottom: 2px solid var(--cyan-deep);
}

.page-about .about-rail__nav .rail__list {
  display: grid;
  gap: 2px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__nav a {
  display: block;
  padding: 7px 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--graphite);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rail__nav a:hover,
.page-about .about-rail__nav a:focus-visible,
.page-about .about-rail__nav a[aria-current="true"] {
  background: var(--cyan-soft);
  border-left-color: var(--cyan-deep);
  color: var(--ink);
}

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

  .page-about .about-role--rule,
  .page-about .about-role--tech {
    grid-column: span 2;
  }

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

  .page-about .about-partner--award {
    grid-column: span 2;
  }
}

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

  .page-about .about-section--ink {
    padding: 34px 32px 38px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 30px 0 68px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(288px, .85fr);
    gap: 44px;
    align-items: end;
  }

  .page-about .about-hero__lede {
    font-size: 17px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--rail);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-rail__sticky {
    position: sticky;
    top: 96px;
  }

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

/* ================= 品牌档案 /company/ ================= */

.page-about {
  --about-cut: 16px;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding: 20px 0 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 22px 0 56px;
  background:
    repeating-linear-gradient(180deg, rgba(17, 19, 24, .035) 0 1px, transparent 1px 32px),
    radial-gradient(120% 90% at 90% -10%, rgba(24, 224, 200, .18), transparent 60%),
    linear-gradient(180deg, #F8F8F3 0%, #ECECE4 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -52px;
  width: 280px;
  height: 132px;
  background: var(--amber);
  opacity: .18;
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
}

.page-about .about-hero__title {
  margin: 12px 0 18px;
  font-size: clamp(36px, 6.2vw, 72px);
  font-weight: 300;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-hero__lede {
  margin: 0 0 22px;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--graphite);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-hero__panel {
  position: relative;
  padding: 24px 22px 16px;
  background: var(--ink);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-hero__panel-label {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .about-hero__facts {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(245, 245, 240, .18);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(245, 245, 240, .12);
}

.page-about .about-hero__fact-label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--on-ink-soft);
}

.page-about .about-hero__fact-value {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--amber);
  white-space: nowrap;
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: 46px 0 74px;
}

.page-about .about-body__grid {
  display: grid;
  gap: 34px;
}

/* ---------- 分区 ---------- */
.page-about .about-section {
  padding-top: 30px;
  border-top: 2px solid var(--ink);
}

.page-about .about-section + .about-section {
  margin-top: 54px;
}

.page-about .about-section__idx {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan-deep);
}

.page-about .about-section__title {
  margin: 0 0 14px;
  font-size: clamp(23px, 3.2vw, 33px);
  font-weight: 400;
  line-height: 1.26;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-about .about-section > p {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-section--ink {
  padding: 30px 24px 34px;
  border-top: 2px solid var(--amber);
  background: var(--ink);
}

.page-about .about-section--ink .about-section__idx {
  color: var(--cyan);
}

.page-about .about-section--ink .about-section__title {
  color: #FFFFFF;
}

.page-about .about-section--ink > p {
  color: rgba(245, 245, 240, .70);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.page-about .about-filter__btn {
  appearance: none;
  padding: 7px 15px;
  font-family: inherit;
  font-size: 13px;
  line-height: 1.4;
  color: var(--graphite);
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: 0;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-filter__btn:hover,
.page-about .about-filter__btn:focus-visible,
.page-about .about-filter__btn.is-active {
  background: var(--cyan-soft);
  border-color: var(--cyan-deep);
  color: var(--ink);
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  position: relative;
  padding: 18px 20px 20px 22px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-left: 5px solid var(--graphite);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-role:hover {
  box-shadow: 0 6px 18px rgba(17, 19, 24, .07);
}

.page-about .about-role--rule { border-left-color: var(--cyan); }
.page-about .about-role--edit { border-left-color: var(--amber); }
.page-about .about-role--support { border-left-color: var(--cyan-deep); }
.page-about .about-role--tech { border-left-color: var(--graphite); }

.page-about .about-role__num {
  display: block;
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-role__name {
  margin: 8px 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--ink);
}

.page-about .about-role .about-role__duty {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--graphite);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 26px 0 4px;
}

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

.page-about .about-figure .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-about .about-figure--ink .figure__frame {
  background: var(--paper);
}

.page-about .about-figure--ink .figure__caption {
  color: rgba(245, 245, 240, .58);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  margin: 26px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
  border-left: 2px dashed var(--line-strong);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 14px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 17px;
  width: 11px;
  height: 11px;
  background: var(--paper);
  border: 2px solid var(--ink);
  transform: rotate(45deg);
}

.page-about .about-timeline__item:first-child::before {
  background: var(--amber);
}

.page-about .about-tl {
  background: #FFFFFF;
  border: 1px solid var(--line);
}

.page-about .about-tl__summary {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 44px 14px 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-tl__summary::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--cyan-deep);
}

.page-about .about-tl[open] .about-tl__summary::after {
  content: "−";
}

.page-about .about-tl__summary:hover {
  background: var(--paper-2);
}

.page-about .about-tl__year {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--ink);
}

.page-about .about-tl__label {
  padding: 3px 9px;
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--ink);
  background: var(--amber-soft);
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
}

.page-about .about-tl__head {
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-tl__body {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--line);
}

.page-about .about-tl__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

/* ---------- 校订流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: 1px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  background: rgba(245, 245, 240, .18);
  border: 1px solid rgba(245, 245, 240, .18);
}

.page-about .about-flow__step {
  padding: 20px 18px 22px;
  background: #1A1E26;
}

.page-about .about-flow__idx {
  display: block;
  margin-bottom: 10px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-flow__step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: #FFFFFF;
}

.page-about .about-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: rgba(245, 245, 240, .66);
}

.page-about .about-notes {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px dashed rgba(245, 245, 240, .24);
}

.page-about .about-notes__title {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-about .about-notes__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-about .about-notes__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-about .about-notes__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 245, 240, .74);
}

.page-about .about-section--ink .tag--muted {
  color: rgba(245, 245, 240, .8);
  border-color: rgba(245, 245, 240, .38);
}

/* ---------- 内容协作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-partner {
  padding: 20px 20px 22px;
  background: #FFFFFF;
  border: 1px solid var(--line);
  border-top: 4px solid var(--cyan-deep);
}

.page-about .about-partner--award {
  border-top-color: var(--amber);
  background: linear-gradient(180deg, #FFFDF7 0%, #FFFFFF 62%);
}

.page-about .about-partner__num {
  margin: 0 0 6px;
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-about .about-partner__name {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-partner__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--graphite);
}

/* ---------- 地区与备案 ---------- */
.page-about .about-region__icp {
  padding: 2px 6px;
  background: var(--paper-2);
  border-left: 3px solid var(--cyan-deep);
  font-size: 15px;
}

.page-about .about-region__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 侧批注栏 ---------- */
.page-about .about-rail__sticky {
  display: grid;
  gap: 16px;
}

.page-about .about-rail__card {
  padding: 16px 16px 18px;
  background: var(--paper-2);
  border-left: 3px solid var(--cyan-deep);
}

.page-about .about-rail__card--ticks {
  border-left-color: var(--amber);
}

.page-about .about-rail__label {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--graphite);
}

.page-about .about-rail__version {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-rail__big {
  margin: 0;
  font-size: 32px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-rail__note {
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.66;
  color: var(--graphite);
}

.page-about .about-rail__ticks {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 3px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__ticks li {
  height: 13px;
  background: var(--cyan-soft);
  border-bottom: 2px solid var(--cyan-deep);
}

.page-about .about-rail__nav .rail__list {
  display: grid;
  gap: 2px;
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-rail__nav a {
  display: block;
  padding: 7px 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--graphite);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-rail__nav a:hover,
.page-about .about-rail__nav a:focus-visible,
.page-about .about-rail__nav a[aria-current="true"] {
  background: var(--cyan-soft);
  border-left-color: var(--cyan-deep);
  color: var(--ink);
}

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

  .page-about .about-role--rule,
  .page-about .about-role--tech {
    grid-column: span 2;
  }

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

  .page-about .about-partner--award {
    grid-column: span 2;
  }
}

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

  .page-about .about-section--ink {
    padding: 34px 32px 38px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 30px 0 68px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(288px, .85fr);
    gap: 44px;
    align-items: end;
  }

  .page-about .about-hero__lede {
    font-size: 17px;
  }
}

@media (min-width: 1040px) {
  .page-about .about-body__grid {
    grid-template-columns: minmax(0, 1fr) var(--rail);
    gap: 52px;
    align-items: start;
  }

  .page-about .about-rail__sticky {
    position: sticky;
    top: 96px;
  }

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