/* =========================================================
   page-about —— 品牌与团队
   全部选择器限定在 .page-about 作用域内
   ========================================================= */

.page-about {
  --ab-section: clamp(56px, 9vw, 112px);
  --ab-cut: 18px;
  background: var(--paper-100);
  color: var(--ink-900);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 32px);
}

/* ---------- 通用小标签 ---------- */
.page-about .about-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--abyss-600);
}

.page-about .about-eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--copper-500);
}

/* ---------- 键盘焦点 ---------- */
.page-about a:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--copper-500);
  outline-offset: 3px;
}

/* =========================================================
   00 首屏
   ========================================================= */
.page-about .about-open {
  padding: clamp(28px, 5vw, 56px) 0 clamp(52px, 8vw, 100px);
}

.page-about .about-open__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 6vw, 44px);
}

.page-about .about-open__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(52px, 11vw, 84px);
  line-height: 0.82;
  letter-spacing: -0.05em;
  color: var(--copper-500);
}

.page-about .about-open__body h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(29px, 4.4vw, 50px);
  line-height: 1.22;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--abyss-900);
}

@media (min-width: 900px) {
  .page-about .about-open__grid {
    grid-template-columns: clamp(72px, 7vw, 104px) minmax(0, 1.5fr) minmax(280px, 1fr);
    column-gap: clamp(24px, 3vw, 48px);
    align-items: start;
  }
}

/* 首屏数据条 */
.page-about .about-stats {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--rule-strong);
}

@media (min-width: 640px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px 16px 0;
  border-bottom: 1px solid var(--rule);
}

.page-about .about-stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--abyss-800);
}

.page-about .about-stat__unit {
  margin-left: 3px;
  font-size: 0.52em;
  font-weight: 600;
  color: var(--abyss-600);
}

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-70);
}

/* 首屏图 */
.page-about .about-open__figure {
  margin: 0;
}

.page-about .about-open__figure .figure__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--abyss-800);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-about .about-open__figure .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-open__figure .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-50);
}

/* =========================================================
   01 团队职能
   ========================================================= */
.page-about .about-roles {
  padding: var(--ab-section) 0;
  border-top: 1px solid var(--rule);
}

.page-about .about-roles__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 40px);
  margin-top: clamp(30px, 5vw, 52px);
}

@media (min-width: 960px) {
  .page-about .about-roles__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    column-gap: clamp(32px, 5vw, 80px);
    align-items: start;
  }

  .page-about .about-roles__index {
    position: sticky;
    top: var(--sticky-offset);
  }
}

.page-about .about-roles__index-title {
  margin: 0 0 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-50);
}

.page-about .about-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-index-list li {
  border-bottom: 1px solid var(--rule);
}

.page-about .about-index-list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  font-size: 15px;
  color: var(--ink-70);
  text-decoration: none;
  transition: color var(--dur), padding-left var(--dur);
}

.page-about .about-index-list a::before {
  content: "";
  width: 0;
  height: 1px;
  background: var(--copper-500);
  transition: width var(--dur);
}

.page-about .about-index-list a:hover,
.page-about .about-index-list a:focus-visible {
  color: var(--ink-900);
  padding-left: 6px;
}

.page-about .about-index-list a:hover::before,
.page-about .about-index-list a:focus-visible::before {
  width: 14px;
}

.page-about .about-index-list a[aria-current="true"] {
  color: var(--copper-500);
  font-weight: 600;
}

.page-about .about-index-list a[aria-current="true"]::before {
  width: 20px;
}

/* 职能卡片 */
.page-about .about-role {
  position: relative;
  margin: 0 0 clamp(16px, 2vw, 22px);
  padding: clamp(22px, 3vw, 32px) clamp(20px, 3vw, 30px);
  background: var(--paper-200);
  border-left: 3px solid var(--rule-strong);
  transition: transform var(--dur), border-color var(--dur);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
}

.page-about .about-role:last-child {
  margin-bottom: 0;
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  transform: translateY(-2px);
  border-left-color: var(--copper-500);
}

.page-about .about-role__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 12px;
}

.page-about .about-role__code {
  padding: 3px 7px;
  border: 1px solid var(--copper-300);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--copper-500);
}

.page-about .about-role__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 23px);
  color: var(--abyss-900);
}

.page-about .about-role__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  white-space: nowrap;
  color: var(--ink-50);
}

.page-about .about-role__text {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-70);
}

.page-about .about-role__duties {
  list-style: none;
  margin: 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--rule);
  display: grid;
  gap: 8px;
}

.page-about .about-role__duties li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--ink-70);
}

.page-about .about-role__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--copper-300);
}

/* =========================================================
   02 档案维护流程（深色区）
   ========================================================= */
.page-about .about-process {
  position: relative;
  overflow: hidden;
  padding: var(--ab-section) 0;
  background: var(--abyss-900);
  color: var(--paper-100);
}

.page-about .about-process::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    118deg,
    rgba(217, 160, 102, 0.07) 0px,
    rgba(217, 160, 102, 0.07) 1px,
    transparent 1px,
    transparent 72px
  );
}

.page-about .about-process .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
}

.page-about .about-flow__item {
  display: grid;
  grid-template-columns: minmax(46px, auto) minmax(0, 1fr);
  gap: clamp(14px, 3vw, 32px);
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--rule-dark);
}

.page-about .about-flow__item:last-child {
  border-bottom: 1px solid var(--rule-dark);
}

.page-about .about-flow__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(25px, 3.2vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--copper-500);
}

.page-about .about-flow__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 23px);
  color: var(--paper-100);
}

.page-about .about-flow__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper-70);
}

.page-about .about-process__figure {
  margin: clamp(36px, 6vw, 64px) 0 0;
}

.page-about .about-process__figure .figure__media {
  aspect-ratio: 24 / 10;
  overflow: hidden;
  background: var(--abyss-700);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-process__figure .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-process__figure .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--paper-50);
}

/* =========================================================
   03 资质与治理
   ========================================================= */
.page-about .about-credentials {
  padding: var(--ab-section) 0;
}

.page-about .about-creds {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(30px, 5vw, 52px);
}

@media (min-width: 820px) {
  .page-about .about-creds {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-cred {
  padding: clamp(22px, 3vw, 32px);
  background: var(--paper-100);
  border: 1px solid var(--rule-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ab-cut)), calc(100% - var(--ab-cut)) 100%, 0 100%);
  transition: border-color var(--dur), transform var(--dur);
}

.page-about .about-cred:hover {
  border-color: var(--copper-500);
  transform: translateY(-2px);
}

.page-about .about-cred__code {
  display: inline-block;
  margin-bottom: 14px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--abyss-900);
  background: var(--copper-300);
}

.page-about .about-cred__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  color: var(--abyss-900);
}

.page-about .about-cred__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-cred__scope {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-50);
}

.page-about .about-cred__scope-label {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--abyss-600);
}

/* =========================================================
   04 海南属地与合作生态（深色区）
   ========================================================= */
.page-about .about-territory {
  padding: var(--ab-section) 0;
  background: var(--abyss-800);
  color: var(--paper-100);
}

.page-about .about-territory__facts {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--rule-dark);
}

@media (min-width: 760px) {
  .page-about .about-territory__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 64px);
  }
}

.page-about .about-fact {
  display: grid;
  gap: 7px;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule-dark);
}

.page-about .about-fact__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--copper-300);
}

.page-about .about-fact__value {
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-100);
}

.page-about .about-territory__figure {
  margin: clamp(32px, 5vw, 56px) 0 0;
}

.page-about .about-territory__figure .figure__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--abyss-700);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

@media (min-width: 700px) {
  .page-about .about-territory__figure .figure__media {
    aspect-ratio: 16 / 5;
  }
}

.page-about .about-territory__figure .figure__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-territory__figure .figure__caption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--paper-50);
}

/* =========================================================
   05 发展历程
   ========================================================= */
.page-about .about-history {
  padding: var(--ab-section) 0;
  border-top: 1px solid var(--rule);
}

.page-about .about-tl {
  list-style: none;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
  max-width: 860px;
}

.page-about .about-tl__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 44px) clamp(22px, 3vw, 36px);
  border-left: 1px solid var(--rule-strong);
}

.page-about .about-tl__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -5.5px;
  top: 6px;
  width: 10px;
  height: 10px;
  background: var(--paper-100);
  border: 2px solid var(--copper-500);
  transform: rotate(45deg);
}

.page-about .about-tl__meta {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--abyss-600);
}

.page-about .about-tl__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  color: var(--abyss-900);
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-70);
}

/* =========================================================
   下一步
   ========================================================= */
.page-about .about-next {
  padding: clamp(48px, 7vw, 88px) 0;
  background: var(--paper-200);
  border-top: 1px solid var(--rule-strong);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
}

@media (min-width: 860px) {
  .page-about .about-next__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
  }
}

.page-about .about-next__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1.3;
  color: var(--abyss-900);
}

.page-about .about-next__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-70);
}

.page-about .about-next__links {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--rule-strong);
}

.page-about .about-next__links li {
  border-bottom: 1px solid var(--rule-strong);
}

.page-about .about-next__links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 4px;
  font-size: 15.5px;
  color: var(--ink-900);
  text-decoration: none;
  transition: color var(--dur), padding-left var(--dur);
}

.page-about .about-next__links a::after {
  content: "→";
  color: var(--copper-500);
  transition: transform var(--dur);
}

.page-about .about-next__links a:hover,
.page-about .about-next__links a:focus-visible {
  color: var(--copper-500);
  padding-left: 10px;
}

.page-about .about-next__links a:hover::after,
.page-about .about-next__links a:focus-visible::after {
  transform: translateX(4px);
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 480px) {
  .page-about .about-open__num {
    font-size: 46px;
  }

  .page-about .about-role__count {
    margin-left: 0;
    width: 100%;
  }

  .page-about .about-flow__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}