.page-about,
.page-about * {
  box-sizing: border-box;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ===== 品牌故事首屏 ===== */
.story-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  background: var(--snow);
}

.story-hero__visual {
  position: relative;
  overflow: hidden;
  height: 240px;
  background: var(--ink);
}

.story-hero__image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-hero__visual-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 27, 42, 0.72) 0%, rgba(27, 27, 42, 0.06) 52%, rgba(46, 91, 159, 0.24) 100%);
  pointer-events: none;
}

.story-hero__content {
  padding: 28px 20px 36px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
  border-top: 4px solid var(--sky);
}

.story-hero__index {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--sky);
}

.story-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 4.4vw, 2.6rem);
  line-height: 1.25;
  font-weight: 900;
  color: var(--ink);
  max-width: 16em;
}

.story-hero__lead {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 60ch;
}

.story-hero__facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  width: 100%;
  border-top: 2px solid var(--line);
  padding-top: 18px;
  margin-top: 4px;
}

.story-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.story-hero__fact-num {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--ink);
}

.story-hero__fact-label {
  font-family: var(--font-body);
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--ink-soft);
}

.story-hero__colors {
  display: flex;
  width: 100%;
  height: 4px;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  margin-top: 6px;
}

.story-hero__colors span {
  flex: 1 1 0;
}

.story-hero__colors span:nth-child(1) {
  background: var(--sky);
}

.story-hero__colors span:nth-child(2) {
  background: var(--snow);
}

.story-hero__colors span:nth-child(3) {
  background: var(--gold);
}

.story-hero__colors span:nth-child(4) {
  background: var(--kiwi);
}

/* ===== 品牌起源 ===== */
.story-origin {
  position: relative;
  padding: 88px 20px 56px;
  background: var(--paper);
}

.story-origin__peaks {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1;
  pointer-events: none;
}

.story-origin__peaks svg {
  display: block;
  width: 100%;
  height: 64px;
}

.story-origin__inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
}

.story-origin__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 24px;
}

.story-origin__index,
.story-timeline__index,
.story-culture__index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin: 0;
  padding-bottom: 10px;
}

.story-origin__title,
.story-timeline__title,
.story-culture__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--ink);
}

.story-origin__layout {
  display: grid;
  gap: 32px;
}

.story-origin__copy p {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink);
  max-width: 70ch;
}

.story-origin__lead {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--sky);
}

.story-origin__facts {
  display: grid;
  gap: 12px;
  border-left: 4px solid var(--gold);
  padding-left: 18px;
}

.story-origin__fact {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.story-origin__fact-index {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  background: var(--ink);
  color: var(--snow);
  padding: 4px 8px;
  white-space: nowrap;
}

/* ===== 核心理念 ===== */
.story-principle {
  background: var(--ink);
  color: var(--snow);
  padding: 64px 20px;
}

.story-principle__head {
  max-width: 820px;
  margin: 0 auto 48px;
}

.story-principle__index {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.story-principle__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 900;
  color: var(--snow);
}

.story-principle__quote {
  margin: 0 0 20px;
  padding-left: 20px;
  border-left: 6px solid var(--gold);
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--snow);
}

.story-principle__intro {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(244, 239, 230, 0.85);
  max-width: 60ch;
}

.story-principle__grid {
  display: grid;
  gap: 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.story-principle__item {
  display: grid;
  grid-template-columns: 48px 1fr;
  column-gap: 16px;
  padding-top: 22px;
  border-top: 1px solid rgba(244, 239, 230, 0.3);
}

.story-principle__num {
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--kiwi);
}

.story-principle__item h3 {
  grid-column: 2;
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--snow);
}

.story-principle__item p {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.85);
  max-width: 46ch;
}

/* ===== 发展里程碑 ===== */
.story-timeline {
  padding: 72px 20px 80px;
  background: var(--paper);
}

.story-timeline__head {
  max-width: 980px;
  margin: 0 auto 56px;
}

.story-timeline__desc {
  margin: 10px 0 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 58ch;
}

.story-timeline__line {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 980px;
  position: relative;
}

.story-timeline__line::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--line);
}

.story-timeline__item {
  position: relative;
  padding: 0 0 28px 44px;
}

.story-timeline__node {
  position: absolute;
  left: 3px;
  top: 28px;
  z-index: 2;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px var(--paper), 0 0 0 5px var(--line);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.story-timeline__item:hover .story-timeline__node,
.story-timeline__item:focus-within .story-timeline__node {
  background: var(--kiwi);
  transform: scale(1.2);
}

.story-timeline__card {
  border-bottom: 2px solid var(--line);
}

.story-timeline__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 2px;
  font-family: var(--font-head);
}

.story-timeline__summary::-webkit-details-marker {
  display: none;
}

.story-timeline__year {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--sky);
  white-space: nowrap;
}

.story-timeline__event {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--ink);
}

.story-timeline__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  line-height: 1;
  color: var(--gold);
}

.story-timeline__card[open] .story-timeline__summary::after {
  content: "−";
}

.story-timeline__detail {
  padding: 0 2px 22px;
}

.story-timeline__detail p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--ink-soft);
  max-width: 560px;
}

.story-timeline__figure {
  margin: 64px auto 0;
  max-width: 760px;
}

.story-timeline__figure img,
.story-culture__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.story-timeline__figure figcaption {
  margin-top: 12px;
  border-left: 3px solid var(--gold);
  padding-left: 14px;
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ===== 文化融合 ===== */
.story-culture {
  background: var(--snow);
  padding: 72px 20px;
}

.story-culture__grid {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 40px;
  align-items: center;
}

.story-culture__head {
  margin-bottom: 18px;
}

.story-culture__lead {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 1.2rem;
  font-weight: 900;
  color: var(--sky);
}

.story-culture__body > p {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 60ch;
}

.story-culture__symbols {
  list-style: none;
  margin: 24px 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.story-culture__symbols li {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  align-items: start;
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

.story-culture__symbol {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--gold);
  padding-top: 4px;
}

.story-culture__symbols strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--ink);
}

.story-culture__symbols p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--ink-soft);
}

.story-culture__more {
  margin-top: 8px !important;
}

.story-culture__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* ===== 未来展望 ===== */
.story-future {
  position: relative;
  overflow: hidden;
  background: var(--sky);
  color: var(--snow);
  padding: 76px 20px;
}

.story-future__inner {
  position: relative;
  z-index: 2;
  max-width: 780px;
}

.story-future__index {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.story-future__title {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  color: var(--snow);
}

.story-future__lead {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 900;
  line-height: 1.7;
  color: var(--snow);
}

.story-future__copy {
  margin: 0 0 28px;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.92);
  max-width: 640px;
}

.story-future__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.story-future__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 2px solid rgba(255, 255, 255, 0.85);
  background: transparent;
  color: var(--snow);
  font-family: var(--font-head);
  font-size: 0.92rem;
  font-weight: 900;
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.story-future__link:focus-visible,
.story-future__link:hover {
  background: var(--snow);
  color: var(--sky);
}

.story-future__mandala {
  position: absolute;
  right: -80px;
  bottom: -50px;
  width: 240px;
  height: 240px;
  opacity: 0.16;
  z-index: 1;
  pointer-events: none;
}

.story-future__mandala svg {
  display: block;
  width: 100%;
  height: 100%;
}

/* ===== 桌面端适配 ===== */
@media (min-width: 768px) {
  .story-origin {
    padding: 120px 28px 64px;
  }

  .story-origin__peaks svg {
    height: 120px;
  }

  .story-principle {
    padding: 80px 32px;
  }

  .story-principle__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 36px 28px;
  }

  .story-timeline {
    padding: 96px 28px 96px;
  }

  .story-timeline__line::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .story-timeline__item {
    width: 50%;
    padding: 0 56px 44px 0;
    text-align: right;
  }

  .story-timeline__item--right {
    margin-left: 50%;
    padding: 0 0 44px 56px;
    text-align: left;
  }

  .story-timeline__node {
    top: 34px;
    left: auto;
    right: -14px;
  }

  .story-timeline__item--right .story-timeline__node {
    right: auto;
    left: -14px;
  }

  .story-timeline__summary {
    justify-content: flex-end;
  }

  .story-timeline__item--right .story-timeline__summary {
    justify-content: flex-start;
  }

  .story-timeline__detail p {
    max-width: 480px;
    margin-left: auto;
  }

  .story-timeline__item--right .story-timeline__detail p {
    margin-left: 0;
  }

  .story-culture {
    padding: 96px 28px;
  }

  .story-culture__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 64px;
  }

  .story-future {
    padding: 96px 28px 100px;
  }

  .story-future__mandala {
    width: 360px;
    height: 360px;
    right: -60px;
    bottom: -70px;
  }
}

@media (min-width: 1024px) {
  .story-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    min-height: 580px;
  }

  .story-hero__visual {
    height: auto;
    min-height: 580px;
  }

  .story-hero__content {
    padding: 56px 48px 44px 40px;
    border-top: none;
    border-left: 4px solid var(--sky);
    justify-content: center;
  }

  .story-origin__layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
    gap: 48px;
  }
}