/* ===== 品牌故事页 page-about ===== */

.page-about {
  display: block;
  color: var(--bone);
}

.page-about .wrap {
  width: 100%;
  max-width: var(--content);
  margin-inline: auto;
  padding-inline: 20px;
}

@media (min-width: 768px) {
  .page-about .wrap {
    padding-inline: 32px;
  }
}

.page-about .section {
  padding-block: 56px;
}

@media (min-width: 900px) {
  .page-about .section {
    padding-block: 88px;
  }
}

/* 通用小标题组 */
.page-about .about-head {
  max-width: 720px;
  margin-bottom: 34px;
}

.page-about .about-head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.2;
  color: var(--bone);
}

.page-about .about-head .lede {
  margin: 0;
}

.page-about .eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .lede {
  color: var(--text-dim);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: 26px;
  padding-bottom: 0;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -10%;
  width: 62%;
  height: 320px;
  background: linear-gradient(200deg, rgba(47, 240, 208, 0.16), rgba(255, 107, 74, 0.12) 58%, transparent 88%);
  clip-path: polygon(20% 0, 100% 0, 100% 100%, 0 66%);
  pointer-events: none;
  z-index: 0;
}

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

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  max-width: 15em;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.025em;
  font-size: clamp(29px, 6.4vw, 52px);
  line-height: 1.14;
  color: var(--bone);
}

.page-about .about-hero .lede {
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__jump {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  text-decoration: none;
  padding: 8px 4px;
  border-bottom: 1px solid var(--line-soft);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-hero__jump:hover,
.page-about .about-hero__jump:focus-visible {
  color: var(--cyan);
  border-color: var(--line-cyan);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
  margin: 36px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
}

@media (min-width: 800px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .fact {
  display: flex;
  flex-direction: column-reverse;
  gap: 6px;
  min-width: 0;
}

.page-about .fact dt {
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--text-soft);
}

.page-about .fact dd {
  margin: 0;
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
  text-align: left;
}

.page-about .about-hero__media {
  position: relative;
  max-width: var(--shell);
  margin: 38px auto 0;
  border-radius: 0;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 54px), 0 100%);
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 出发点 ---------- */
.page-about .about-origin {
  padding-top: 34px;
}

.page-about .about-origin__grid {
  display: grid;
  gap: 22px;
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: 5fr 7fr;
    gap: 56px;
    align-items: start;
  }
}

.page-about .about-origin__lead h2 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(24px, 4vw, 34px);
  line-height: 1.22;
}

.page-about .about-origin__body {
  position: relative;
  padding-left: 20px;
  border-left: 1px solid var(--line-soft);
}

.page-about .about-origin__body p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

/* ---------- 数据整理 ---------- */
.page-about .about-method__grid {
  display: grid;
  gap: 34px;
}

@media (min-width: 960px) {
  .page-about .about-method__grid {
    grid-template-columns: 7fr 5fr;
    gap: 48px;
    align-items: start;
  }
}

.page-about .about-method__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: methodstep;
}

.page-about .about-method__steps li {
  position: relative;
  padding: 20px 0 20px 52px;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-method__steps li:first-child {
  padding-top: 4px;
}

.page-about .about-method__steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-method__steps li::before {
  counter-increment: methodstep;
  content: "0" counter(methodstep);
  position: absolute;
  left: 0;
  top: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-method__steps li:first-child::before {
  top: 8px;
}

.page-about .about-method__steps h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .about-method__steps p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-method__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

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

.page-about .about-method__figure figcaption {
  position: static;
  display: block;
  padding: 12px 16px;
  background: rgba(6, 26, 43, 0.82);
  border-top: 1px solid var(--line-soft);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 覆盖范围横带 ---------- */
.page-about .about-scope {
  position: relative;
  overflow: hidden;
  padding-block: 52px;
  background: linear-gradient(135deg, rgba(14, 90, 138, 0.4), rgba(6, 26, 43, 0.15) 72%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

@media (min-width: 900px) {
  .page-about .about-scope {
    padding-block: 72px;
  }
}

.page-about .about-scope::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 9px;
  background: repeating-linear-gradient(90deg, var(--line-cyan) 0 1px, transparent 1px 26px);
  opacity: 0.7;
  pointer-events: none;
}

.page-about .about-scope__head {
  max-width: 760px;
  margin-bottom: 30px;
}

.page-about .about-scope__head h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(24px, 4.2vw, 34px);
  line-height: 1.2;
}

.page-about .about-scope__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-scope__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@media (min-width: 760px) {
  .page-about .about-scope__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-about .about-scope__grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.page-about .scope-cell {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 16px 22px;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--line-cyan);
  border-radius: var(--radius-sm);
  background: rgba(6, 26, 43, 0.58);
  min-width: 0;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .scope-cell:hover,
.page-about .scope-cell:focus-within {
  transform: translateY(-4px);
  border-color: var(--line-cyan);
  background-color: rgba(14, 90, 138, 0.34);
  box-shadow: var(--shadow-1);
}

.page-about .scope-cell__num {
  font-size: clamp(26px, 3.6vw, 34px);
  font-weight: 600;
  line-height: 1;
  color: var(--cyan);
}

.page-about .scope-cell__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}

/* ---------- 引言斜块 ---------- */
.page-about .about-quote {
  position: relative;
  padding-block: 54px;
  background: linear-gradient(102deg, rgba(255, 107, 74, 0.16), rgba(6, 26, 43, 0) 62%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  clip-path: polygon(0 0, 100% 6%, 100% 100%, 0 94%);
}

.page-about .about-quote__inner {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .about-quote p {
  margin: 0;
  max-width: 22em;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.015em;
  font-size: clamp(20px, 3.4vw, 30px);
  line-height: 1.35;
  color: var(--bone);
}

.page-about .about-quote span {
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--text-soft);
}

/* ---------- 团队 ---------- */
.page-about .team-tree {
  display: grid;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-about .team-tree {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }
}

.page-about .team-node {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(14, 90, 138, 0.18), rgba(6, 26, 43, 0.24));
  overflow: hidden;
  transition: border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .team-node[open] {
  border-color: var(--line-cyan);
  box-shadow: var(--shadow-1);
}

.page-about .team-node > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .team-node > summary::-webkit-details-marker {
  display: none;
}

.page-about .team-node > summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .team-node[open] > summary::after {
  content: "–";
}

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

.page-about .team-node__idx {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .team-node__name {
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .team-node__count {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-soft);
}

.page-about .team-node__body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--line-soft);
}

.page-about .team-node__body p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 发展时间轴 ---------- */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 16px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(47, 240, 208, 0.32) 42%, var(--line-soft) 82%, transparent);
}

.page-about .timeline__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 34px;
}

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

.page-about .timeline__tick {
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--deep);
  background: var(--moss);
  border: 1px solid var(--moss);
  z-index: 1;
}

.page-about .timeline__item--now .timeline__tick {
  color: var(--cyan);
  background: rgba(6, 26, 43, 0.9);
  border: 1px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(47, 240, 208, 0.12);
}

.page-about .timeline__card {
  padding: 18px 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(14, 90, 138, 0.12);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .timeline__card:hover {
  border-color: var(--line-cyan);
  transform: translateY(-2px);
  background-color: rgba(14, 90, 138, 0.22);
}

.page-about .timeline__card h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .timeline__card p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .timeline__figure {
  position: relative;
  margin: 18px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

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

.page-about .timeline__figure figcaption {
  position: static;
  display: block;
  padding: 10px 14px;
  background: rgba(6, 26, 43, 0.82);
  border-top: 1px solid var(--line-soft);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 做法清单 ---------- */
.page-about .ethos-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

@media (min-width: 900px) {
  .page-about .ethos-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-about .ethos-list li {
  display: flex;
  gap: 16px;
  padding: 20px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(6, 26, 43, 0.42);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-about .ethos-list li:hover {
  border-color: var(--line-cyan);
  background-color: rgba(14, 90, 138, 0.2);
}

.page-about .ethos-list__idx {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-cyan);
  border-radius: 50%;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .ethos-list h3 {
  margin: 2px 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .ethos-list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

/* ---------- 下一步入口 ---------- */
.page-about .about-next {
  padding-block: 56px 72px;
  border-top: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(14, 90, 138, 0.2), rgba(6, 26, 43, 0) 78%);
}

@media (min-width: 900px) {
  .page-about .about-next {
    padding-block: 76px 96px;
  }
}

.page-about .about-next__inner {
  display: grid;
  gap: 30px;
}

@media (min-width: 1000px) {
  .page-about .about-next__inner {
    grid-template-columns: 4fr 8fr;
    gap: 48px;
    align-items: start;
  }
}

.page-about .about-next__text h2 {
  margin: 10px 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.22;
}

.page-about .about-next__text p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-about .about-next__links {
  display: grid;
  gap: 10px;
}

@media (min-width: 700px) {
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .next-link {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx name"
    "idx desc";
  gap: 4px 14px;
  align-items: center;
  padding: 18px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(6, 26, 43, 0.5);
  text-decoration: none;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-cyan);
  background-color: rgba(14, 90, 138, 0.3);
  box-shadow: var(--shadow-1);
}

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

.page-about .next-link__idx {
  grid-area: idx;
  align-self: start;
  margin-top: 3px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--coral);
}

.page-about .next-link__name {
  grid-area: name;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--bone);
}

.page-about .next-link__desc {
  grid-area: desc;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-hero__jump,
  .page-about .scope-cell,
  .page-about .timeline__card,
  .page-about .next-link,
  .page-about .ethos-list li,
  .page-about .team-node {
    transition: none;
  }

  .page-about .scope-cell:hover,
  .page-about .scope-cell:focus-within,
  .page-about .timeline__card:hover,
  .page-about .next-link:hover,
  .page-about .next-link:focus-visible {
    transform: none;
  }
}