/* ===== 品牌概况 · 页面专属样式（作用域 .page-about） ===== */

.page-about .about-crumb {
  padding-top: clamp(88px, 11vw, 118px);
}

.page-about .breadcrumb {
  font-size: 13px;
  color: var(--mist);
}

.page-about .abouts-crumb a,
.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  color: var(--white);
}

/* ---------- 开场非对称分栏 ---------- */
.page-about .about-intro {
  padding-top: clamp(16px, 3vw, 32px);
}

.page-about .about-intro__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-about .about-intro h1 {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 5.2vw, 60px);
  line-height: 1.07;
  letter-spacing: -0.02em;
}

.page-about .about-intro .lede {
  margin: 20px 0 0;
  max-width: 58ch;
}

.page-about .about-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(30, 42, 58, 0.72);
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--mist);
}

.page-about .about-facts b {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-intro__media {
  position: relative;
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--slate);
  box-shadow: var(--shadow);
}

.page-about .about-intro__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(200deg, rgba(53, 224, 208, 0.16), transparent 45%, rgba(228, 0, 43, 0.2)),
    repeating-linear-gradient(0deg, rgba(10, 18, 32, 0.16) 0 1px, transparent 1px 4px);
}

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

/* ---------- 斜切留白带 ---------- */
.page-about .about-gap {
  position: relative;
  height: clamp(26px, 4vw, 52px);
}

.page-about .about-gap::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
  transform: rotate(-1.2deg);
}

/* ---------- 服务三条线 ---------- */
.page-about .about-head {
  max-width: 720px;
}

.page-about .about-head__note {
  margin: 14px 0 0;
  color: var(--mist);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .about-services {
  display: grid;
  gap: clamp(20px, 3vw, 30px);
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-service {
  display: grid;
  gap: 12px;
  padding-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--line);
}

.page-about .about-service:first-child {
  border-top: 2px solid var(--red);
}

.page-about .about-service__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--red);
}

.page-about .about-service h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -0.01em;
}

.page-about .about-service p {
  margin: 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .about-service__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-versions__figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--char);
}

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

.page-about .about-timeline {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  margin-top: clamp(22px, 3.6vw, 38px);
}

.page-about .about-timeline__rail {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 2px 2px 10px;
  scrollbar-width: thin;
}

.page-about .about-node {
  flex: 0 0 auto;
  display: grid;
  gap: 3px;
  min-width: 138px;
  padding: 12px 18px;
  text-align: left;
  cursor: pointer;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: rgba(16, 22, 31, 0.6);
  color: var(--mist);
  font-family: var(--font-body);
  transition: background 0.16s ease, color 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.page-about .about-node:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
}

.page-about .about-node__year {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-about .about-node__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.page-about .about-node__label {
  font-size: 12.5px;
}

.page-about .about-node[aria-selected="true"] {
  background: linear-gradient(135deg, var(--red), var(--red-deep));
  border-color: transparent;
  color: var(--white);
  box-shadow: 0 14px 32px rgba(228, 0, 43, 0.3);
}

.page-about .about-node[aria-selected="true"] .about-node__year,
.page-about .about-node[aria-selected="true"] .about-node__ver {
  color: var(--white);
}

.page-about .about-node:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-about .about-panel {
  padding: clamp(20px, 3.2vw, 32px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line);
  background: linear-gradient(158deg, rgba(30, 42, 58, 0.95), rgba(16, 22, 31, 0.98) 72%);
}

.page-about .about-panel h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 26px);
  letter-spacing: -0.01em;
}

.page-about .about-panel ul {
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-panel li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(255, 255, 255, 0.84);
}

.page-about .about-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

/* ---------- 团队与流转 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-about .about-team__text {
  margin: 16px 0 0;
  color: var(--mist);
  line-height: 1.85;
  font-size: 15px;
}

.page-about .about-roles {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-role {
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: rgba(30, 42, 58, 0.55);
  border: 1px solid var(--line-soft);
}

.page-about .about-role b {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-role span {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-role p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-flow {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-flow__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-about .about-flow__track {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  padding: 16px 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(30, 42, 58, 0.9), rgba(16, 22, 31, 0.95));
}

.page-about .about-flow__step:nth-child(2) {
  border-top-color: var(--gold);
}

.page-about .about-flow__step:nth-child(3) {
  border-top-color: var(--coral);
}

.page-about .about-flow__step:nth-child(4) {
  border-top-color: var(--moss);
}

.page-about .about-flow__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-about .about-flow__step strong {
  display: block;
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 17px;
}

.page-about .about-flow__step p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-team__media {
  margin: 0;
  border-radius: var(--r-xl);
  overflow: hidden;
  background: var(--slate);
}

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

/* ---------- 运营节奏（米白反相阅读区） ---------- */
.page-about .about-rhythm {
  padding: clamp(46px, 7vw, 86px) 0;
  color: var(--ink);
}

.page-about .about-rhythm .eyebrow {
  color: var(--red-deep);
}

.page-about .about-rhythm .section-title {
  color: var(--ink);
  max-width: 20ch;
}

.page-about .about-rhythm__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-about .about-cadence {
  display: grid;
  gap: 0;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cadence li {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid rgba(10, 18, 32, 0.16);
}

.page-about .about-cadence__cycle {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--terra);
}

.page-about .about-cadence h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--ink);
}

.page-about .about-cadence p {
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(10, 18, 32, 0.74);
}

.page-about .about-aside {
  padding: 22px 22px 24px;
  border-radius: var(--r-lg);
  background: var(--ink);
  color: var(--cream);
}

.page-about .about-aside h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--white);
}

.page-about .about-aside p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(234, 223, 207, 0.78);
}

.page-about .about-aside__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--red);
  color: var(--white);
  font-size: 14px;
  text-decoration: none;
  transition: background 0.14s ease;
}

.page-about .about-aside__link::after {
  content: "→";
}

.page-about .about-aside__link:hover {
  background: var(--red-deep);
}

.page-about .about-aside__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 覆盖范围与主体信息 ---------- */
.page-about .about-entity__card {
  padding: clamp(22px, 3.4vw, 38px);
  border-radius: var(--r-xl);
  border: 1px solid rgba(242, 178, 51, 0.55);
  background: linear-gradient(150deg, rgba(242, 178, 51, 0.09), rgba(10, 18, 32, 0.45) 58%);
  box-shadow: inset 0 0 0 1px rgba(242, 178, 51, 0.14);
}

.page-about .about-entity__intro p {
  margin: 14px 0 0;
  max-width: 62ch;
  color: var(--mist);
  line-height: 1.82;
  font-size: 15px;
}

.page-about .about-entity__list {
  display: grid;
  gap: 14px;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-about .about-entity__list > div {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid rgba(242, 178, 51, 0.22);
}

.page-about .about-entity__list dt {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-entity__list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--white);
  word-break: break-word;
}

.page-about .about-entity__sub {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--mist);
}

.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(90deg, rgba(228, 0, 43, 0.16), transparent 72%);
  color: var(--white);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.16s ease, background 0.16s ease;
}

.page-about .about-links a::after {
  content: "→";
  color: var(--red);
}

.page-about .about-links a:hover {
  border-color: var(--red);
  background: linear-gradient(90deg, rgba(228, 0, 43, 0.34), transparent 78%);
}

.page-about .about-links a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-cadence li {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 720px) {
  .page-about .about-entity__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 32px;
  }
}

@media (min-width: 780px) {
  .page-about .about-service {
    grid-template-columns: 102px minmax(0, 1fr);
    gap: clamp(18px, 3vw, 36px);
    align-items: start;
  }
}

@media (min-width: 880px) {
  .page-about .about-timeline {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-timeline__rail {
    flex-direction: column;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-node {
    min-width: 0;
  }
}

@media (min-width: 940px) {
  .page-about .about-rhythm__grid {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: start;
  }

  .page-about .about-aside {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 960px) {
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-about .about-flow__track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-links a,
  .page-about .about-aside__link {
    transition: none;
  }

  .page-about .about-node:hover {
    transform: none;
  }
}
<<<END>>>