/* ===== 品牌档案页 · page-about ===== */

.page-about .ab-inline {
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}
.page-about .ab-inline:hover,
.page-about .ab-inline:focus-visible {
  color: var(--red-deep);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(72px, 14vw, 132px) 0 clamp(56px, 8vw, 92px);
}
.page-about .ab-hero__beam {
  position: absolute;
  left: -14%;
  right: -14%;
  bottom: -34%;
  height: 72%;
  background: linear-gradient(102deg, rgba(200, 16, 46, 0.46) 0%, rgba(138, 10, 32, 0.22) 42%, rgba(34, 211, 197, 0.13) 74%, transparent 100%);
  transform: rotate(-8deg);
  pointer-events: none;
}
.page-about .ab-hero__rule {
  position: absolute;
  top: clamp(24px, 6vw, 64px);
  right: clamp(-40px, -2vw, 0px);
  width: clamp(120px, 26vw, 340px);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold));
  transform: rotate(-12deg);
  pointer-events: none;
}
.page-about .ab-hero__wrap {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 6vw, 56px);
  align-items: start;
}
.page-about .ab-hero__anno {
  margin: 0 0 16px;
}
.page-about .ab-hero__title {
  margin: 0 0 clamp(18px, 3vw, 26px);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(38px, 9.4vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-about .ab-hero__titleline {
  display: block;
}
.page-about .ab-hero__titleline--cut {
  color: var(--red);
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
  padding: 0 0.08em;
  margin-top: 0.06em;
}
.page-about .ab-hero__lead {
  margin: 0 0 clamp(26px, 4vw, 40px);
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.78);
}
.page-about .ab-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--glass-line);
  border: 1px solid var(--glass-line);
}
.page-about .ab-hero__fact {
  background: rgba(13, 13, 17, 0.72);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.page-about .ab-hero__fk {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.5);
}
.page-about .ab-hero__fv {
  font-size: clamp(22px, 3.2vw, 30px);
  font-weight: 500;
  color: var(--cyan);
  line-height: 1;
}
.page-about .ab-hero__fu {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  margin-left: 4px;
}
.page-about .ab-hero__figure {
  margin: 0;
  border: 1px solid var(--glass-line);
  background: var(--ink-2);
}
.page-about .ab-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.page-about .ab-hero__figure .v28-media__cap {
  color: rgba(255, 255, 255, 0.55);
  border-top: 1px solid var(--glass-line);
  padding: 10px 14px;
}

/* ---------- 起点 ---------- */
.page-about .ab-origin {
  position: relative;
  padding: clamp(56px, 9vw, 104px) 0 clamp(64px, 10vw, 112px);
}
.page-about .ab-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
  margin-top: clamp(24px, 4vw, 40px);
}
.page-about .ab-origin__p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
  max-width: 68ch;
}
.page-about .ab-origin__p:last-child {
  margin-bottom: 0;
}
.page-about .ab-origin__aside {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--paper);
  border-left: 4px solid var(--gold);
  box-shadow: 0 14px 34px -26px rgba(13, 13, 17, 0.5);
}
.page-about .ab-origin__asidek {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gray);
}
.page-about .ab-origin__asidev {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.35;
  color: var(--ink);
}
.page-about .ab-origin__asiden {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 产品线矩阵 ---------- */
.page-about .ab-lines {
  padding: clamp(56px, 9vw, 104px) 0;
}
.page-about .ab-lines__banner {
  margin: clamp(24px, 4vw, 38px) 0 0;
  border: 1px solid var(--line);
}
.page-about .ab-lines__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}
.page-about .ab-lines__banner .v28-media__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--gray);
}
.page-about .ab-lines__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 44px);
}
.page-about .ab-line {
  position: relative;
  background: var(--bone);
  border: 1px solid var(--line-soft);
  padding: 22px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 320ms var(--ease), border-color 320ms var(--ease), box-shadow 320ms var(--ease);
}
.page-about .ab-line__bar {
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(34, 211, 197, 0.15));
}
.page-about .ab-line--2 .ab-line__bar {
  background: linear-gradient(90deg, var(--gold), rgba(240, 180, 41, 0.15));
}
.page-about .ab-line--3 .ab-line__bar {
  background: linear-gradient(90deg, var(--red), rgba(200, 16, 46, 0.15));
}
.page-about .ab-line--4 .ab-line__bar {
  background: linear-gradient(90deg, var(--cyan-deep), rgba(14, 124, 116, 0.15));
}
.page-about .ab-line__idx {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--gray);
}
.page-about .ab-line__name {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 24px);
  letter-spacing: -0.01em;
  color: var(--ink);
}
.page-about .ab-line__scene {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--gray);
}
.page-about .ab-line__price {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.page-about .ab-line__pl {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gray);
}
.page-about .ab-line__pv {
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
}
.page-about .ab-lines__foot {
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--red);
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 72ch;
}

/* ---------- 时间轴 ---------- */
.page-about .ab-track {
  position: relative;
  padding: clamp(56px, 9vw, 108px) 0 clamp(72px, 10vw, 120px);
  overflow: hidden;
}
.page-about .ab-track::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 240px;
  height: 100%;
  background: linear-gradient(180deg, rgba(200, 16, 46, 0.28), transparent 70%);
  transform: skewX(-8deg);
  transform-origin: top left;
  pointer-events: none;
}
.page-about .ab-track .v28-wrap {
  position: relative;
  z-index: 1;
}
.page-about .ab-timeline {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  position: relative;
}
.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 7px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(240, 180, 41, 0.12));
}
.page-about .ab-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 0 0 clamp(30px, 4.2vw, 46px) 30px;
}
.page-about .ab-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .ab-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(240, 180, 41, 0.16);
}
.page-about .ab-timeline__year {
  font-size: clamp(28px, 5.4vw, 40px);
  font-weight: 500;
  line-height: 1;
  color: var(--gold);
  letter-spacing: -0.02em;
}
.page-about .ab-timeline__t {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.45;
  color: var(--paper);
}
.page-about .ab-timeline__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.7);
  max-width: 62ch;
}
.page-about .ab-track__foot {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.66);
}
.page-about .ab-track__foot .ab-inline {
  color: var(--cyan);
}
.page-about .ab-track__foot .ab-inline:hover,
.page-about .ab-track__foot .ab-inline:focus-visible {
  color: var(--paper);
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  padding: clamp(56px, 9vw, 104px) 0;
}
.page-about .ab-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 48px);
  margin-top: clamp(24px, 4vw, 40px);
}
.page-about .ab-team__nums {
  list-style: none;
  margin: 0 0 clamp(22px, 3.4vw, 34px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-about .ab-team__num {
  background: var(--bone);
  padding: 18px 10px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.page-about .ab-team__nv {
  font-size: clamp(30px, 6vw, 52px);
  font-weight: 500;
  line-height: 1;
  color: var(--red);
  letter-spacing: -0.03em;
}
.page-about .ab-team__nl {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gray);
}
.page-about .ab-team__txt p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--ink);
  max-width: 68ch;
}
.page-about .ab-team__txt p:last-child {
  margin-bottom: 0;
}
.page-about .ab-team__hours {
  margin-top: clamp(22px, 3.4vw, 32px);
}
.page-about .ab-team__hoursk {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gray);
}
.page-about .ab-team__chips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .ab-team__chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 14px;
  font-size: 13px;
  color: var(--gray);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 999px;
}
.page-about .ab-team__chip--on {
  color: var(--ink);
  border-color: var(--cyan-deep);
  background: rgba(34, 211, 197, 0.12);
  font-weight: 500;
}
.page-about .ab-team__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink);
}
.page-about .ab-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-about .ab-team__figure .v28-media__cap {
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
  border-top: 1px solid var(--glass-line);
}

/* ---------- 资质 ---------- */
.page-about .ab-cert {
  padding: clamp(56px, 9vw, 104px) 0;
}
.page-about .ab-cert__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  margin-top: clamp(24px, 4vw, 40px);
  align-items: start;
}
.page-about .ab-cert__ring {
  text-align: center;
  padding: 18px 0;
}
.page-about .ab-ring {
  width: clamp(150px, 40vw, 200px);
  height: auto;
  margin: 0 auto;
  display: block;
}
.page-about .ab-ring__track {
  stroke: rgba(13, 13, 17, 0.09);
}
.page-about .ab-ring__val {
  stroke: var(--red);
}
.page-about .ab-cert__ringn {
  margin: 14px 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 500;
  color: var(--ink);
}
.page-about .ab-cert__ringl {
  margin: 0 auto;
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}
.page-about .ab-cert__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line-soft);
}
.page-about .ab-cert__item {
  background: var(--paper);
  padding: 20px 20px 20px 22px;
  border-left: 3px solid var(--cyan);
}
.page-about .ab-cert__item:nth-child(2) {
  border-left-color: var(--cyan-deep);
}
.page-about .ab-cert__item:nth-child(3) {
  border-left-color: var(--gold);
}
.page-about .ab-cert__item:nth-child(4) {
  border-left-color: var(--red);
}
.page-about .ab-cert__t {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink);
}
.page-about .ab-cert__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 渠道 ---------- */
.page-about .ab-channel {
  position: relative;
  padding: clamp(56px, 9vw, 104px) 0 clamp(64px, 10vw, 112px);
}
.page-about .ab-channel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: clamp(24px, 4vw, 40px);
}
.page-about .ab-channel__card {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  transition: transform 320ms var(--ease), border-color 320ms var(--ease);
}
.page-about .ab-channel__idx {
  margin: 0 0 10px;
  font-size: clamp(34px, 6vw, 52px);
  font-weight: 500;
  line-height: 1;
  color: var(--red);
  letter-spacing: -0.03em;
}
.page-about .ab-channel__t {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  color: var(--ink);
}
.page-about .ab-channel__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--gray);
}
.page-about .ab-channel__foot {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--gray);
  max-width: 72ch;
}

/* ---------- 资料维护 + 收尾 ---------- */
.page-about .ab-keep {
  padding: clamp(56px, 9vw, 112px) 0 clamp(60px, 9vw, 104px);
}
.page-about .ab-keep__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.6vw, 34px);
  margin-top: clamp(24px, 4vw, 40px);
}
.page-about .ab-keep__col {
  padding-top: 18px;
  border-top: 2px solid var(--red);
}
.page-about .ab-keep__col:nth-child(2) {
  border-top-color: var(--gold);
}
.page-about .ab-keep__col:nth-child(3) {
  border-top-color: var(--cyan);
}
.page-about .ab-keep__t {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(17px, 2.1vw, 20px);
  line-height: 1.5;
  color: var(--paper);
}
.page-about .ab-keep__d {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(255, 255, 255, 0.7);
}
.page-about .ab-keep__d .ab-inline {
  color: var(--cyan);
}
.page-about .ab-keep__d .ab-inline:hover,
.page-about .ab-keep__d .ab-inline:focus-visible {
  color: var(--paper);
}
.page-about .ab-keep__cta {
  margin-top: clamp(30px, 5vw, 48px);
  padding-top: 24px;
  border-top: 1px solid var(--glass-line);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about .ab-keep__ctal {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
}
.page-about .ab-keep__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 交互增强 ---------- */
.page-about .ab-line:hover,
.page-about .ab-line:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: 0 18px 36px -28px rgba(13, 13, 17, 0.6);
}
.page-about .ab-channel__card:hover,
.page-about .ab-channel__card:focus-within {
  transform: translateY(-4px);
  border-color: var(--cyan);
}

/* ---------- 平板 ---------- */
@media (min-width: 680px) {
  .page-about .ab-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .ab-hero__figure img {
    aspect-ratio: 5 / 4;
  }
  .page-about .ab-lines__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-cert__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-channel__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .ab-channel__card--wide {
    grid-column: span 2;
  }
  .page-about .ab-keep__cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-about .ab-hero__wrap {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 400px);
    gap: clamp(40px, 5vw, 72px);
  }
  .page-about .ab-hero__figure img {
    aspect-ratio: 4 / 5;
  }
  .page-about .ab-origin__grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  }
  .page-about .ab-lines__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }
  .page-about .ab-line--2 {
    margin-top: 42px;
  }
  .page-about .ab-line--3 {
    margin-top: 16px;
  }
  .page-about .ab-line--4 {
    margin-top: 62px;
  }
  .page-about .ab-timeline__item {
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: 32px;
    padding-left: 44px;
  }
  .page-about .ab-timeline::before {
    left: 7px;
  }
  .page-about .ab-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
    align-items: start;
  }
  .page-about .ab-cert__grid {
    grid-template-columns: minmax(230px, 300px) minmax(0, 1fr);
  }
  .page-about .ab-channel__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .ab-channel__card--wide {
    grid-column: span 1;
  }
  .page-about .ab-keep__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(28px, 3vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-line,
  .page-about .ab-channel__card {
    transition: none;
  }
  .page-about .ab-line:hover,
  .page-about .ab-line:focus-within,
  .page-about .ab-channel__card:hover,
  .page-about .ab-channel__card:focus-within {
    transform: none;
  }
}
<<<END>>>