/* 品牌故事页 · 杂志编辑排版 + 中轴时间线 */
.page-about {
  --about-line: rgba(122, 90, 248, 0.35);
  --about-cyan-glow: rgba(0, 229, 255, 0.55);
  background:
    radial-gradient(1100px 520px at 88% 6%, rgba(122, 90, 248, 0.20), transparent 60%),
    radial-gradient(800px 420px at 4% 32%, rgba(0, 229, 255, 0.08), transparent 55%),
    var(--primary-bg);
  color: var(--primary-text);
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding: calc(var(--header-height) + 2.5rem) 0 3rem;
  position: relative;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -220px;
  right: -140px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(122, 90, 248, 0.28), transparent 65%);
  animation: about-drift 16s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes about-drift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(36px, 24px) scale(1.08); }
}
.page-about .about-hero__grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
  position: relative;
  z-index: 1;
}
.page-about .about-hero__copy {
  max-width: 780px;
}
.page-about .about-hero h1 {
  font-family: var(--heading-font);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 1rem 0 1.5rem;
  color: var(--primary-text);
}
.page-about .about-hero__copy .lede {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--secondary-text);
  max-width: 640px;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.page-about .about-hero__panel {
  background: linear-gradient(145deg, rgba(34, 17, 66, 0.92), rgba(20, 10, 38, 0.86));
  border: 1px solid rgba(122, 90, 248, 0.3);
  padding: 1.75rem;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 20px 100%, 0 calc(100% - 20px));
}
.page-about .about-hero__panel .overline {
  color: var(--accent-cyan);
  margin-bottom: 1rem;
}
.page-about .about-hero__list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-about .about-hero__list > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px dashed rgba(122, 90, 248, 0.25);
}
.page-about .about-hero__list > div:last-child {
  border-bottom: none;
}
.page-about .about-hero__list dt {
  color: var(--secondary-text);
  font-size: 0.875rem;
}
.page-about .about-hero__list dd {
  margin: 0;
  font-family: var(--heading-font);
  font-weight: bold;
  color: var(--primary-text);
  font-size: 1rem;
  text-align: right;
}

/* ---------- 品牌简介 ---------- */
.page-about .brand-intro {
  padding-bottom: 2rem;
}
.page-about .brand-intro__grid {
  display: grid;
  gap: 2rem;
  margin-top: 2rem;
}
.page-about .brand-intro__body p {
  line-height: 1.8;
  margin: 0 0 1.25rem;
}
.page-about .brand-intro__body blockquote {
  margin: 2.25rem 0;
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--tertiary-bg);
  color: #221142;
  font-family: var(--heading-font);
  font-size: 1.375rem;
  line-height: 1.45;
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
}
.page-about .brand-intro__body blockquote p {
  margin: 0;
}
.page-about .brand-intro__figure {
  margin: 0.5rem 0 0;
}
.page-about .brand-intro__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about figcaption {
  font-size: 0.8125rem;
  color: var(--secondary-text);
  padding: 0.75rem 0.25rem 0;
  letter-spacing: 0.06em;
}

/* ---------- 发展里程碑 ---------- */
.page-about .milestone-section {
  padding-top: 3rem;
  position: relative;
}
.page-about .milestone-section__banner {
  margin: 2rem 0 3rem;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(122, 90, 248, 0.2);
}
.page-about .milestone-section__banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  opacity: 0.85;
}
.page-about .milestones {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.page-about .milestones::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
  background: linear-gradient(to bottom, transparent, var(--about-line) 8%, var(--about-line) 92%, transparent);
}
.page-about .milestones__item {
  position: relative;
  padding: 0 0 2.75rem 2rem;
}
.page-about .milestones__item::after {
  content: "";
  position: absolute;
  top: 0.75rem;
  left: -7px;
  width: 12px;
  height: 12px;
  background: var(--accent-cyan);
  transform: rotate(45deg);
  box-shadow: 0 0 12px var(--about-cyan-glow);
  animation: about-pulse 3s ease-in-out infinite;
}
.page-about .milestones__item:nth-child(even)::after {
  animation-delay: 0.4s;
}
@keyframes about-pulse {
  0%, 100% { box-shadow: 0 0 6px rgba(0, 229, 255, 0.35); }
  50% { box-shadow: 0 0 20px var(--about-cyan-glow); }
}
.page-about .milestones__card {
  background: linear-gradient(160deg, rgba(34, 17, 66, 0.82), rgba(20, 10, 38, 0.78));
  border: 1px solid rgba(122, 90, 248, 0.22);
  padding: 1.5rem;
  position: relative;
  transition: border-color 0.25s, box-shadow 0.25s, transform 0.25s;
}
.page-about .milestones__card:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.12);
  transform: translateY(-2px);
}
.page-about .milestones__year {
  display: inline-block;
  font-family: var(--heading-font);
  font-size: 2rem;
  font-weight: bold;
  line-height: 1;
  color: var(--accent-orange);
  margin-right: 0.75rem;
}
.page-about .milestones__card h3 {
  font-family: var(--heading-font);
  font-size: 1.125rem;
  margin: 0.75rem 0 0.5rem;
}
.page-about .milestones__card p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--secondary-text);
  margin: 0;
}
.page-about .tag--cyan {
  color: var(--accent-cyan);
  border-color: rgba(0, 229, 255, 0.35);
}

/* ---------- 数据与信任 ---------- */
.page-about .data-section {
  background: linear-gradient(160deg, rgba(34, 17, 66, 0.5), rgba(20, 10, 38, 0.6));
  padding-top: 3.5rem;
  padding-bottom: 2rem;
}
.page-about .data-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
.page-about .data-card {
  background: linear-gradient(145deg, rgba(34, 17, 66, 0.9), rgba(20, 10, 38, 0.75));
  border: 1px solid rgba(122, 90, 248, 0.25);
  padding: 1.5rem;
  transition: border-color 0.25s, box-shadow 0.25s;
}
.page-about .data-card[open] {
  border-color: rgba(0, 229, 255, 0.5);
  box-shadow: 0 8px 30px rgba(0, 229, 255, 0.08);
}
.page-about .data-card summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
}
.page-about .data-card summary::-webkit-details-marker {
  display: none;
}
.page-about .data-card summary::after {
  content: "+";
  margin-left: auto;
  font-size: 1.5rem;
  font-weight: bold;
  line-height: 1;
  color: var(--accent-cyan);
}
.page-about .data-card[open] summary::after {
  content: "−";
}
.page-about .data-card__number {
  font-family: var(--heading-font);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: bold;
  line-height: 1;
  color: var(--accent-orange);
}
.page-about .data-card__suffix {
  font-family: var(--heading-font);
  font-size: 0.9375rem;
  color: var(--accent-orange);
  opacity: 0.85;
}
.page-about .data-card__label {
  flex-basis: 100%;
  font-size: 0.8125rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--secondary-text);
  margin-top: 0.25rem;
}
.page-about .data-card p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--secondary-text);
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px dashed rgba(122, 90, 248, 0.3);
}

/* ---------- 团队与理念 ---------- */
.page-about .team-section {
  padding-top: 3.5rem;
}
.page-about .team-section__visual figure {
  margin: 0;
}
.page-about .team-section__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .team-section__content > p {
  line-height: 1.75;
  color: var(--secondary-text);
  margin: 0 0 1.5rem;
}
.page-about .value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}
.page-about .value-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 1.25rem;
  padding: 1.25rem;
  background: linear-gradient(120deg, rgba(34, 17, 66, 0.85), rgba(20, 10, 38, 0.65));
  border-left: 3px solid var(--accent-orange);
}
.page-about .value-list__index {
  font-family: var(--heading-font);
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--accent-cyan);
  opacity: 0.75;
  line-height: 1;
}
.page-about .value-list__item h3 {
  font-family: var(--heading-font);
  font-size: 1rem;
  margin: 0 0 0.4rem;
}
.page-about .value-list__item p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--secondary-text);
}

/* ---------- 资质与合作 ---------- */
.page-about .trust-section {
  padding-top: 3.5rem;
}
.page-about .trust-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
.page-about .trust-card {
  background: rgba(34, 17, 66, 0.5);
  border: 1px solid rgba(122, 90, 248, 0.22);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s, background 0.25s;
}
.page-about .trust-card:hover {
  border-color: rgba(122, 90, 248, 0.65);
  background: rgba(34, 17, 66, 0.7);
}
.page-about .trust-card::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, transparent 50%, rgba(255, 92, 41, 0.28) 50%);
  pointer-events: none;
}
.page-about .trust-card__icon {
  display: inline-block;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent-orange);
  margin-bottom: 0.75rem;
}
.page-about .trust-card h3 {
  font-family: var(--heading-font);
  font-size: 1.0625rem;
  margin: 0 0 0.5rem;
}
.page-about .trust-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--secondary-text);
}

/* ---------- 延伸阅读 ---------- */
.page-about .next-nav {
  margin-top: 4rem;
  border-top: 1px solid rgba(122, 90, 248, 0.2);
  background: linear-gradient(180deg, transparent, rgba(34, 17, 66, 0.6));
}
.page-about .next-nav__inner {
  padding: 2.5rem 0 3rem;
}
.page-about .next-nav__title {
  font-family: var(--heading-font);
  font-size: 1.5rem;
  color: var(--secondary-text);
  margin: 0 0 1.25rem;
}
.page-about .next-nav__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ---------- 平板与桌面布局 ---------- */
@media (min-width: 700px) {
  .page-about .data-section__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.3fr 0.7fr;
    align-items: start;
  }
  .page-about .brand-intro__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
    align-items: start;
  }
  .page-about .brand-intro__figure {
    margin-top: -3rem;
  }

  /* 中轴时间线 */
  .page-about .milestones::before {
    left: 50%;
    transform: translateX(-50%);
  }
  .page-about .milestones__item {
    width: 50%;
    padding: 0 3rem 3.5rem 0;
  }
  .page-about .milestones__item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 3.5rem 3rem;
  }
  .page-about .milestones__item::after {
    left: auto;
    right: -7px;
  }
  .page-about .milestones__item:nth-child(even)::after {
    left: -7px;
    right: auto;
    animation-delay: 0.2s;
  }

  .page-about .team-section__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 2.5rem;
    align-items: center;
  }
  .page-about .trust-section__grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
  }
}

@media (min-width: 1100px) {
  .page-about .data-section__grid {
    grid-template-columns: 1fr 1fr 1fr;
  }
}