/* ==========================================================
   品牌主张 / page-about
   作用域：.page-about
   ========================================================== */

.page-about {
  background: var(--paper);
  color: var(--kiwi-seed);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */

.page-about .ab-hero {
  position: relative;
  padding: calc(var(--header-h) + 72px) 0 0;
  background:
    radial-gradient(92% 72% at 90% 0%, rgba(111, 191, 43, 0.18), transparent 62%),
    linear-gradient(180deg, #ffffff 0%, var(--paper) 64%);
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--grid-gray) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-gray) 1px, transparent 1px);
  background-size: 76px 76px;
  opacity: 0.5;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 68%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 68%);
}

.page-about .ab-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .ab-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 7.4vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.032em;
  margin: 14px 0 0;
  max-width: 17ch;
  text-wrap: balance;
}

.page-about .ab-hero-sub {
  margin: 22px 0 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--lake-blue);
}

.page-about .ab-hero-lead {
  margin: 24px 0 0;
  max-width: 42ch;
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  line-height: 1.8;
  color: var(--kiwi-seed);
}

.page-about .ab-hero-figure {
  position: relative;
  z-index: 1;
  margin: 54px auto 0;
  padding: 0 var(--gutter);
  max-width: 1600px;
}

.page-about .ab-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 4px solid var(--kiwi-flesh);
}

.page-about .ab-figure-cap {
  margin: 14px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--sunset);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--tag-gray);
}

/* ---------- 通用排版 ---------- */

.page-about h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 4.3vw, 2.45rem);
  line-height: 1.16;
  letter-spacing: -0.022em;
  margin: 10px 0 0;
  max-width: 22ch;
}

.page-about h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.14rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--lake-blue);
  margin: 0;
}

/* ---------- 01 起点 ---------- */

.page-about .ab-origin-grid {
  display: grid;
  gap: 40px;
}

.page-about .ab-origin-copy p {
  max-width: 42ch;
  line-height: 1.8;
  margin: 16px 0 0;
}

.page-about .ab-board {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--kiwi-seed);
}

.page-about .ab-board-item {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 20px;
  border-bottom: var(--hairline);
}

.page-about .ab-board-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  background: var(--kiwi-flesh);
}

.page-about .ab-board-item:nth-child(2)::before { background: var(--lake-blue); }
.page-about .ab-board-item:nth-child(3)::before { background: var(--sunset); }
.page-about .ab-board-item:nth-child(4)::before { background: var(--kiwi-seed); }

.page-about .ab-board-k {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lake-blue);
}

.page-about .ab-board-v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--kiwi-seed);
}

/* ---------- 02 三条原则 ---------- */

.page-about .ab-principles {
  background: var(--kiwi-seed);
  color: var(--paper);
}

.page-about .ab-principles h2,
.page-about .ab-principles h3 {
  color: var(--paper);
}

.page-about .ab-principles .section-index {
  color: var(--kiwi-light);
}

.page-about .ab-rules {
  display: grid;
  margin-top: 38px;
  border-top: 1px solid rgba(246, 248, 242, 0.2);
}

.page-about .ab-rule {
  padding: 30px 0;
  border-bottom: 1px solid rgba(246, 248, 242, 0.2);
}

.page-about .ab-rule-no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--kiwi-light);
  margin: 0 0 12px;
}

.page-about .ab-rule p:last-child {
  margin: 14px 0 0;
  line-height: 1.8;
  color: rgba(246, 248, 242, 0.82);
}

/* ---------- 03 时间轴 ---------- */

.page-about .ab-timeline {
  list-style: none;
  position: relative;
  margin: 44px 0 0;
  padding: 0;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 9px;
  width: 2px;
  background: linear-gradient(180deg, var(--lake-blue), var(--kiwi-flesh));
}

.page-about .ab-phase {
  position: relative;
  padding: 0 0 36px 40px;
}

.page-about .ab-phase:last-child {
  padding-bottom: 0;
}

.page-about .ab-dot {
  position: absolute;
  left: 0;
  top: 4px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--lake-blue);
}

.page-about .ab-phase:nth-child(3) .ab-dot { border-color: var(--kiwi-flesh); }
.page-about .ab-phase:nth-child(4) .ab-dot {
  border-color: var(--sunset);
  background: var(--sunset);
  box-shadow: 0 0 0 4px rgba(239, 106, 30, 0.18);
}

.page-about .ab-plate {
  background: #ffffff;
  border: var(--hairline);
  border-left: 3px solid var(--kiwi-flesh);
  padding: 20px 22px;
  max-width: 46ch;
}

.page-about .ab-plate-year {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lake-blue);
  margin: 0 0 10px;
}

.page-about .ab-plate p:last-child {
  margin: 12px 0 0;
  line-height: 1.75;
  color: var(--kiwi-seed);
}

/* ---------- 04 团队 ---------- */

.page-about .ab-team-grid {
  display: grid;
  gap: 36px;
}

.page-about .ab-team-media {
  margin: 0;
}

.page-about .ab-team-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .ab-team-copy > p {
  max-width: 42ch;
  line-height: 1.8;
  margin: 16px 0 0;
}

.page-about .ab-flow {
  margin: 30px 0 0;
  border-top: 2px solid var(--kiwi-seed);
}

.page-about .ab-flow-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: var(--hairline);
}

.page-about .ab-flow-row dt {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lake-blue);
}

.page-about .ab-flow-row dd {
  margin: 0;
  line-height: 1.75;
}

/* ---------- 05 覆盖范围 ---------- */

.page-about .ab-reach {
  background: var(--kiwi-flesh);
  color: var(--kiwi-seed);
}

.page-about .ab-reach h2,
.page-about .ab-reach h3 {
  color: var(--kiwi-seed);
}

.page-about .ab-reach .section-index {
  color: var(--kiwi-seed);
  opacity: 0.7;
}

.page-about .ab-reach .section-head p.measure {
  max-width: 44ch;
  line-height: 1.8;
  margin: 14px 0 0;
}

.page-about .ab-statgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 34px;
}

.page-about .ab-statcard {
  background: #ffffff;
  padding: 18px 16px 20px;
  border-left: 3px solid var(--lake-blue);
}

.page-about .ab-statcard:nth-child(2n) {
  border-left-color: var(--sunset);
}

.page-about .ab-stat-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--kiwi-seed);
}

.page-about .ab-stat-num span {
  font-size: 0.6em;
  margin-left: 2px;
}

.page-about .ab-stat-cap {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--tag-gray);
}

.page-about .ab-reach-bottom {
  display: grid;
  gap: 26px;
  margin-top: 44px;
}

.page-about .ab-reach-media {
  margin: 0;
}

.page-about .ab-reach-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 3px solid #ffffff;
}

.page-about .ab-reach-copy p {
  max-width: 44ch;
  line-height: 1.8;
  margin: 14px 0 0;
}

.page-about .ab-reach-copy .btn {
  margin-top: 22px;
}

/* ---------- 06 青海与品牌气质 ---------- */

.page-about .ab-plateau {
  background: var(--kiwi-seed);
  color: var(--paper);
}

.page-about .ab-plateau h2 {
  color: var(--paper);
}

.page-about .ab-plateau .section-index {
  color: var(--sunset);
}

.page-about .ab-plateau-grid {
  display: grid;
  gap: 38px;
}

.page-about .ab-plateau-copy p {
  max-width: 42ch;
  line-height: 1.8;
  margin: 16px 0 0;
  color: rgba(246, 248, 242, 0.82);
}

.page-about .ab-swatches {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.page-about .ab-swatch i {
  display: block;
  height: 54px;
  border: 1px solid rgba(246, 248, 242, 0.22);
}

.page-about .ab-swatch span {
  display: block;
  margin-top: 9px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--paper);
}

.page-about .ab-swatch small {
  display: block;
  margin-top: 3px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(246, 248, 242, 0.6);
}

.page-about .ab-swatch--flesh i { background: var(--kiwi-flesh); }
.page-about .ab-swatch--lake i { background: var(--lake-blue); }
.page-about .ab-swatch--sunset i { background: var(--sunset); }
.page-about .ab-swatch--saffron i { background: var(--saffron); }

/* ---------- 07 荣誉 ---------- */

.page-about .ab-honor-grid {
  display: grid;
  gap: 28px;
  margin-top: 32px;
}

.page-about .ab-honor-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5.5vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  color: var(--sunset);
}

.page-about .ab-honor-main p,
.page-about .ab-honor-side p {
  max-width: 42ch;
  line-height: 1.8;
  margin: 0;
}

.page-about .ab-honor-side {
  border-top: var(--hairline);
  padding-top: 22px;
}

/* ---------- 08 下一步 ---------- */

.page-about .ab-next-box {
  position: relative;
  display: grid;
  gap: 26px;
  padding: 32px 22px;
  background: #ffffff;
  border: 2px solid var(--kiwi-seed);
}

.page-about .ab-next-box::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 56px;
  height: 6px;
  background: var(--sunset);
}

.page-about .ab-next-box h2 {
  max-width: 20ch;
}

.page-about .ab-next-box p.measure {
  max-width: 46ch;
  line-height: 1.8;
  margin: 14px 0 0;
}

.page-about .ab-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */

@media (min-width: 560px) {
  .page-about .ab-flow-row {
    grid-template-columns: 88px 1fr;
    gap: 4px 20px;
    align-items: start;
  }

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

@media (min-width: 720px) {
  .page-about .ab-statgrid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .ab-next-box {
    padding: 42px 38px;
  }
}

@media (min-width: 820px) {
  .page-about .ab-rules {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 48px;
    border-top: 0;
  }

  .page-about .ab-rule {
    position: relative;
    border-bottom: 0;
    border-top: 1px solid rgba(246, 248, 242, 0.25);
    padding: 24px 0 0;
  }

  .page-about .ab-rule::before {
    content: "";
    position: absolute;
    top: -1px;
    left: 0;
    width: 44px;
    height: 3px;
    background: var(--kiwi-flesh);
  }

  .page-about .ab-rule:nth-child(2)::before { background: var(--lake-blue); }
  .page-about .ab-rule:nth-child(3)::before { background: var(--sunset); }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    padding-top: calc(var(--header-h) + 94px);
  }

  .page-about .ab-hero-figure {
    margin-top: 66px;
  }

  .page-about .ab-origin-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: start;
  }

  .page-about .ab-team-grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 58px;
    align-items: start;
  }

  .page-about .ab-reach-bottom {
    grid-template-columns: 1.02fr 0.98fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .ab-plateau-grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .ab-honor-grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .ab-honor-side {
    border-top: 0;
    border-left: var(--hairline);
    padding-top: 0;
    padding-left: 28px;
  }

  .page-about .ab-next-box {
    grid-template-columns: 1.35fr auto;
    align-items: center;
    gap: 44px;
  }

  /* 时间轴：中线 + 左右交错说明牌 */
  .page-about .ab-timeline::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .ab-phase {
    display: grid;
    grid-template-columns: 1fr 96px 1fr;
    align-items: start;
    padding: 0 0 52px;
  }

  .page-about .ab-dot {
    position: static;
    grid-column: 2;
    justify-self: center;
    margin-top: 10px;
  }

  .page-about .ab-plate {
    grid-column: 1;
    justify-self: end;
    width: 100%;
  }

  .page-about .ab-phase:nth-child(even) .ab-plate {
    grid-column: 3;
    justify-self: start;
  }

  .page-about .ab-phase:nth-child(even) {
    padding-left: 0;
  }
}

@media (min-width: 1100px) {
  .page-about .ab-hero-lead {
    margin-top: 28px;
  }
}
<<<END>>>