/* ===== 品牌中心 · 页面专属样式 ===== */
.page-about {
  --about-pad: clamp(52px, 8vw, 118px);
  --about-gap: clamp(22px, 3.2vw, 44px);
  --about-hair: rgba(175, 192, 185, 0.26);
  --about-ink: #06231d;
  background: var(--night);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.75;
  overflow-x: clip;
}

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

.page-about .section {
  position: relative;
  padding: var(--about-pad) 0;
}

.page-about .section[id] {
  scroll-margin-top: 92px;
}

.page-about .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.6vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.005em;
  font-weight: 700;
  margin: 0;
  color: var(--paper);
}

.page-about .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .eyebrow::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 2px;
  background: var(--amber);
}

.page-about .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -0.02em;
}

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

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

.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--fog);
}

.page-about .crumbs a {
  color: var(--lime);
  text-decoration: none;
}

.page-about .crumbs a:hover,
.page-about .crumbs a:focus-visible {
  text-decoration: underline;
}

/* ---- 首屏 ---- */
.page-about .about-hero {
  padding: clamp(30px, 5vw, 66px) 0 clamp(46px, 7vw, 92px);
  background:
    radial-gradient(120% 92% at 86% 6%, rgba(14, 107, 92, 0.52) 0%, rgba(11, 31, 51, 0) 64%),
    linear-gradient(180deg, var(--ink-900) 0%, var(--night) 60%, var(--ink-800) 100%);
  border-bottom: var(--bd-strong) solid var(--deep);
}

.page-about .about-hero__shell {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.05rem, 5.4vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-about .about-hero .lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 42rem;
  font-size: clamp(0.9875rem, 1.4vw, 1.125rem);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: var(--bd) solid var(--about-hair);
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 2px;
  border-bottom: var(--bd) solid var(--about-hair);
}

.page-about .about-hero__facts .num {
  font-size: clamp(1.35rem, 2.4vw, 1.8rem);
  color: var(--amber);
}

.page-about .about-hero__facts li span:last-child {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: clamp(24px, 3.2vw, 36px);
}

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

/* ---- 导览条 ---- */
.page-about .about-index {
  background: rgba(7, 22, 36, 0.94);
  border-bottom: var(--bd) solid var(--about-hair);
}

.page-about .about-index__list {
  display: flex;
  gap: clamp(16px, 2.4vw, 32px);
  list-style: none;
  margin: 0;
  padding: 14px 0;
  overflow-x: auto;
  scrollbar-width: none;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list a {
  display: inline-block;
  white-space: nowrap;
  padding-bottom: 2px;
  color: var(--fog);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

/* ---- 品牌起点 ---- */
.page-about .about-origin {
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--night) 100%);
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-origin__aside {
  border-left: var(--bd-strong) solid var(--lime);
  padding-left: clamp(16px, 2vw, 26px);
}

.page-about .about-origin__note {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--fog);
}

.page-about .about-origin__body p {
  margin: 0 0 1.15em;
  max-width: 46rem;
  color: var(--mist);
  font-size: 0.9875rem;
  line-height: 1.85;
}

.page-about .about-origin__body p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-origin__list {
  list-style: none;
  margin: clamp(26px, 3.4vw, 42px) 0 0;
  padding: 0;
  border-top: var(--bd) solid var(--about-hair);
}

.page-about .about-origin__list li {
  padding: 15px 0;
  border-bottom: var(--bd) solid var(--about-hair);
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .about-origin__list strong {
  display: inline-block;
  min-width: 6.6em;
  margin-right: 10px;
  font-family: var(--font-num);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--lime);
  vertical-align: 2px;
}

/* ---- 看台主张 ---- */
.page-about .about-idea {
  background: var(--mist);
  color: var(--graphite);
}

.page-about .about-idea .section-title {
  color: var(--ink-900);
}

.page-about .about-idea .eyebrow {
  color: var(--grass);
}

.page-about .about-idea__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-quote {
  margin: 0 0 clamp(26px, 3.2vw, 40px);
  padding: clamp(20px, 2.6vw, 34px) clamp(20px, 2.6vw, 34px);
  background: var(--paper);
  border: var(--bd-strong) solid var(--deep);
  box-shadow: var(--shadow-hard);
}

.page-about .about-quote p {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.9rem);
  line-height: 1.3;
  color: var(--ink-900);
}

.page-about .about-idea__cols {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-about .about-idea__cols h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: 0.01em;
  color: var(--grass);
}

.page-about .about-idea__cols p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--graphite);
}

/* ---- 团队 ---- */
.page-about .about-team {
  background: var(--deep);
}

.page-about .about-team__head {
  display: grid;
  gap: clamp(14px, 2vw, 26px);
  margin-bottom: clamp(30px, 4vw, 54px);
}

.page-about .about-team__lede {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-team__grid {
  display: grid;
  gap: clamp(26px, 3.4vw, 48px);
  align-items: start;
}

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

.page-about .about-team__figure .media-caption {
  margin-top: 12px;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--fog);
}

.page-about .about-team__roles {
  display: grid;
  gap: 0;
}

.page-about .about-role {
  display: grid;
  gap: 6px;
  padding: clamp(20px, 2.4vw, 28px) 0;
  border-top: var(--bd) solid var(--about-hair);
}

.page-about .about-role:last-child {
  border-bottom: var(--bd) solid var(--about-hair);
}

.page-about .about-role__num {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-role h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-role p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--fog);
}

/* ---- 时间轴 ---- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--deep) 0%, var(--night) 42%, var(--ink-900) 100%);
}

.page-about .about-timeline__head {
  max-width: 54rem;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-timeline__lede {
  margin: 14px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-timeline__figure {
  margin: 0 0 clamp(36px, 5vw, 68px);
}

.page-about .about-track {
  --track-pad: clamp(24px, 3vw, 34px);
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--track-pad);
  display: grid;
  gap: clamp(26px, 3.6vw, 46px);
}

.page-about .about-track::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--lime) 0%, var(--grass) 52%, rgba(14, 107, 92, 0.12) 100%);
}

.page-about .about-track__item {
  position: relative;
}

.page-about .about-track__dot {
  position: absolute;
  left: calc(-1 * var(--track-pad));
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--night);
  border: var(--bd-strong) solid var(--lime);
  border-radius: 50%;
}

.page-about .about-track__when {
  margin: 0;
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .about-track__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .about-track__text {
  margin: 8px 0 0;
  max-width: 44rem;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--fog);
}

/* ---- 服务覆盖（斜切分栏） ---- */
.page-about .about-reach {
  background: linear-gradient(158deg, var(--grass) 0%, var(--deep) 58%, var(--night) 100%);
  clip-path: polygon(0 3vw, 100% 0, 100% calc(100% - 3vw), 0 100%);
  padding: calc(var(--about-pad) + 3.4vw) 0;
}

.page-about .about-reach__head {
  max-width: 50rem;
}

.page-about .about-reach__lede {
  margin: 14px 0 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(28px, 4vw, 50px);
  background: rgba(220, 231, 225, 0.2);
  border: var(--bd) solid rgba(220, 231, 225, 0.26);
}

.page-about .about-scene {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: rgba(7, 22, 36, 0.44);
}

.page-about .about-scene h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-about .about-scene p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---- 合作共建 ---- */
.page-about .about-partners {
  background: var(--paper);
  color: var(--graphite);
}

.page-about .about-partners .section-title {
  color: var(--ink-900);
}

.page-about .about-partners .eyebrow {
  color: var(--grass);
}

.page-about .about-partners__head {
  max-width: 50rem;
}

.page-about .about-partners__lede {
  margin: 14px 0 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--ink-800);
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(30px, 4vw, 50px);
}

.page-about .about-partner {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: clamp(22px, 2.8vw, 32px);
  background: var(--mist);
  border: var(--bd-strong) solid var(--deep);
  box-shadow: var(--shadow-hard);
}

.page-about .about-partner__num {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--grass);
}

.page-about .about-partner h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--ink-900);
}

.page-about .about-partner p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--graphite);
}

.page-about .about-partners__foot {
  margin: clamp(26px, 3.4vw, 40px) 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink-800);
}

.page-about .about-partners__foot a {
  color: var(--grass);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--amber);
}

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

/* ---- 选择理由 ---- */
.page-about .about-why {
  background: var(--night);
}

.page-about .about-why__head {
  max-width: 46rem;
}

.page-about .about-why__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 44px);
  margin-top: clamp(28px, 4vw, 48px);
}

.page-about .about-why__card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding-top: clamp(16px, 2vw, 24px);
  border-top: var(--bd-strong) solid var(--amber);
}

.page-about .about-why__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  color: var(--lime);
}

.page-about .about-why__card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(30px, 4vw, 50px);
  background: var(--about-hair);
  border: var(--bd) solid var(--about-hair);
}

.page-about .about-cadence__cell {
  display: grid;
  align-content: start;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--ink-800);
}

.page-about .about-cadence__val {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-about .about-cadence__val small {
  margin-left: 6px;
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: var(--fog);
}

.page-about .about-cadence__label {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.68;
  color: var(--mist);
}

/* ---- 结尾行动区 ---- */
.page-about .about-cta {
  background: var(--deep);
  border-top: var(--bd-strong) solid var(--amber);
  padding: clamp(46px, 6vw, 84px) 0;
}

.page-about .about-cta__inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  line-height: 1.14;
  color: var(--paper);
}

.page-about .about-cta__inner p {
  margin: 12px 0 0;
  max-width: 40rem;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---- 断点 ---- */
@media (min-width: 700px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-hero__facts li {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 18px 20px;
    border-bottom: 0;
    border-left: 1px solid var(--about-hair);
  }

  .page-about .about-hero__facts li:first-child {
    padding-left: 0;
    border-left: 0;
  }

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

  .page-about .about-cadence {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .about-idea__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-partners__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-track__item {
    display: grid;
    grid-template-columns: 190px minmax(0, 1fr);
    grid-template-areas:
      "when title"
      "when text";
    column-gap: clamp(20px, 3vw, 42px);
    row-gap: 6px;
  }

  .page-about .about-track__when {
    grid-area: when;
    padding-top: 5px;
  }

  .page-about .about-track__title {
    grid-area: title;
    margin: 0;
  }

  .page-about .about-track__text {
    grid-area: text;
    margin: 0;
  }

  .page-about .about-role {
    grid-template-columns: 84px minmax(0, 1fr);
    grid-template-areas:
      "n t"
      "n d";
    column-gap: 24px;
    row-gap: 8px;
    align-items: baseline;
  }

  .page-about .about-role__num {
    grid-area: n;
  }

  .page-about .about-role h3 {
    grid-area: t;
  }

  .page-about .about-role p {
    grid-area: d;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__shell {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(36px, 5vw, 80px);
    align-items: center;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 4.5fr) minmax(0, 7fr);
    gap: clamp(40px, 6vw, 96px);
  }

  .page-about .about-idea__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(36px, 5vw, 84px);
  }

  .page-about .about-team__head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(36px, 5vw, 80px);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-about .about-why__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

@media (min-width: 1080px) {
  .page-about .about-reach__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index__list {
    scroll-behavior: auto;
  }
}