/* ===== 团队与品牌 · 页面专属样式 ===== */

.page-about {
  background: var(--space);
  color: var(--text);
}

/* ---------- 封面 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 6% -20%, rgba(59, 42, 107, 0.62) 0%, rgba(11, 31, 58, 0) 62%),
    radial-gradient(60% 80% at 100% 0%, rgba(0, 229, 208, 0.09) 0%, rgba(11, 31, 58, 0) 70%);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.page-about .about-hero__mark {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 3px solid var(--cyan);
}

.page-about .about-hero__mark-num {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: clamp(2.6rem, 9vw, 3.6rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-about .about-hero__mark-label {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 6.4vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: #ffffff;
  max-width: 20ch;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-hero__strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(32px, 5vw, 56px) 0 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__strip-item {
  background: var(--space);
  padding: 16px 16px 18px;
}

.page-about .about-hero__strip-term {
  margin: 0;
  font-family: var(--font-data);
  font-weight: 500;
  font-size: clamp(1.5rem, 4.5vw, 2rem);
  line-height: 1;
  color: var(--turq);
}

.page-about .about-hero__strip-desc {
  margin: 8px 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-dim);
}

@media (min-width: 760px) {
  .page-about .about-hero__strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 40px;
    align-items: start;
    margin-top: 36px;
  }
}

/* ---------- 通用段落与标题 ---------- */
.page-about .about-section {
  padding: clamp(48px, 8vw, 92px) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-head {
  max-width: 74ch;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-about .about-head__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-head__kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
}

.page-about .about-head__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.6vw, 2.15rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: #ffffff;
}

.page-about .about-head__lead {
  margin: 14px 0 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 团队分工 ---------- */
.page-about .about-roles-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-roles {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .about-role {
  position: relative;
  padding: 20px 20px 22px;
  background: rgba(6, 20, 38, 0.72);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  transition: border-color 220ms ease, background 220ms ease, transform 220ms ease;
}

.page-about .about-role::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: var(--line);
  transition: background 220ms ease;
}

.page-about .about-role:hover,
.page-about .about-role:focus,
.page-about .about-role:focus-within {
  border-color: var(--line-cyan);
  background: rgba(6, 20, 38, 0.96);
  transform: translateX(3px);
  outline: none;
}

.page-about .about-role:hover::before,
.page-about .about-role:focus::before,
.page-about .about-role:focus-within::before {
  background: var(--cyan);
}

.page-about .about-role__top {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.page-about .about-role__no {
  font-family: var(--font-data);
  font-size: 0.82rem;
  color: var(--haze);
}

.page-about .about-role__name {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.page-about .about-role__count {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 1.35rem;
  line-height: 1;
  color: var(--turq);
}

.page-about .about-role__unit {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--text-dim);
}

.page-about .about-role__desc {
  margin: 14px 0 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-role__more {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.page-about .about-role__more li {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-data);
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--text-dim);
}

.page-about .about-role__more li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

@media (hover: hover) and (pointer: fine) {
  .page-about .about-role__more {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 320ms ease, margin-top 320ms ease, opacity 240ms ease;
  }

  .page-about .about-role:hover .about-role__more,
  .page-about .about-role:focus .about-role__more,
  .page-about .about-role:focus-within .about-role__more {
    max-height: 280px;
    margin-top: 14px;
    opacity: 1;
  }
}

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

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

.page-about .about-roles-figure .media-frame {
  border: 1px solid var(--line);
}

@media (min-width: 980px) {
  .page-about .about-roles-layout {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 1fr);
    gap: 36px;
    align-items: start;
  }
}

/* ---------- 版本沿革 ---------- */
.page-about .about-versions-figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
}

.page-about .about-versions {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-about .about-version {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .about-version__rail {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-version__no {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--rose);
}

.page-about .about-version__tag {
  display: inline-block;
  padding: 4px 10px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: var(--wine);
  border-radius: var(--radius);
}

.page-about .about-version__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.06rem;
  line-height: 1.4;
  color: #ffffff;
}

.page-about .about-version__text {
  margin: 10px 0 0;
  max-width: 68ch;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--text);
}

@media (min-width: 800px) {
  .page-about .about-version {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 32px;
    padding: 32px 0;
    align-items: start;
  }

  .page-about .about-version__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}

/* ---------- 内容标准 ---------- */
.page-about .about-standard {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-about .about-standard__text p {
  margin: 16px 0 0;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-standard__card {
  padding-top: 6px;
  padding-bottom: 10px;
}

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

.page-about .about-standard__row {
  display: grid;
  gap: 4px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(10, 12, 16, 0.14);
}

.page-about .about-standard__row:last-child {
  border-bottom: 0;
}

.page-about .about-standard__term {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--wine);
}

.page-about .about-standard__desc {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--black);
}

@media (min-width: 800px) {
  .page-about .about-standard {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

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

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-partners__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  padding: 16px 18px;
  background: var(--indigo);
  border-left: 3px solid var(--cyan);
}

.page-about .about-partners__num {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 1.7rem;
  line-height: 1;
  color: var(--turq);
}

.page-about .about-partners__label {
  align-self: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  line-height: 1.4;
  color: #ffffff;
}

.page-about .about-partners__note {
  grid-column: 1 / -1;
  font-size: 0.88rem;
  line-height: 1.7;
  color: rgba(244, 241, 234, 0.78);
}

.page-about .about-partners__more {
  margin: 20px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-partners__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-about .about-partners__more a:hover,
.page-about .about-partners__more a:focus-visible {
  color: var(--turq);
}

@media (min-width: 960px) {
  .page-about .about-partners {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 联系团队 ---------- */
.page-about .about-contact {
  border-bottom: 0;
}

.page-about .about-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-contact__card {
  padding: 22px 20px 24px;
  background: rgba(6, 20, 38, 0.72);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cyan);
}

.page-about .about-contact__card-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-contact__value {
  margin: 12px 0 0;
  font-family: var(--font-data);
  font-size: 1.05rem;
  line-height: 1.5;
  color: #ffffff;
  word-break: break-word;
}

.page-about .about-contact__value--sm {
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.7;
}

.page-about .about-contact__note {
  margin: 12px 0 0;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

@media (min-width: 820px) {
  .page-about .about-contact__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-role::before,
  .page-about .about-role__more {
    transition: none;
  }

  .page-about .about-role:hover,
  .page-about .about-role:focus,
  .page-about .about-role:focus-within {
    transform: none;
  }
}