/* ===== 品牌概况 / about ===== */
.page-about {
  --about-card: #071733;
  --about-line: rgba(42, 59, 92, 0.82);
  --about-bevel: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  padding-bottom: 88px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 40px;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  left: -8%;
  width: 116%;
  height: 340px;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(42, 59, 92, 0.2) 0 1px, transparent 1px 24px),
    linear-gradient(118deg, rgba(255, 46, 77, 0.18) 0%, rgba(255, 46, 77, 0) 40%),
    linear-gradient(300deg, rgba(0, 229, 255, 0.14) 0%, rgba(0, 229, 255, 0) 44%);
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}

.page-about .about-hero__lede h1 {
  margin: 12px 0 18px;
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-hero__p {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  border: 1px solid var(--about-line);
  clip-path: var(--about-bevel);
  background: var(--about-card);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(1.08) contrast(1.06);
}

.page-about .about-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(5, 11, 24, 0.24) 0 1px, transparent 1px 4px),
    linear-gradient(200deg, rgba(0, 229, 255, 0.16), rgba(255, 46, 77, 0.16));
}

.page-about .about-hero__media .media__cap {
  position: relative;
  z-index: 1;
  display: block;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border-top: 1px solid var(--about-line);
}

/* ---------- 关键读数 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  clip-path: var(--about-bevel);
}

.page-about .about-stats > li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: var(--about-card);
}

.page-about .about-stat__v {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4.4vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
  text-shadow: 0 0 12px rgba(0, 229, 255, 0.35);
}

.page-about .about-stat__k {
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

/* ---------- 历程档案 ---------- */
.page-about .about-archive {
  padding: 60px 0 10px;
}

.page-about .about-archive__head {
  margin-bottom: 26px;
}

.page-about .about-archive__head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.6vw, 40px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-timeline-fig {
  margin: 0 0 46px;
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--red);
  background: var(--about-card);
  clip-path: var(--about-bevel);
  overflow: hidden;
}

.page-about .about-timeline-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.08);
}

.page-about .about-timeline-fig .media__cap {
  display: block;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  border-top: 1px solid var(--about-line);
}

/* ---------- 时间轴脊线 ---------- */
.page-about .about-spine {
  position: relative;
}

.page-about .about-spine::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--red) 0%, var(--violet) 50%, var(--cyan) 100%);
  opacity: 0.5;
}

.page-about .about-entry {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  padding-left: 46px;
  margin-bottom: 52px;
}

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

.page-about .about-entry::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 6px;
  width: 16px;
  height: 16px;
  background: var(--ink-deep);
  border: 2px solid var(--cyan);
  transform: rotate(45deg);
  z-index: 1;
}

.page-about .about-entry--red::before {
  border-color: var(--red);
  box-shadow: 0 0 14px rgba(255, 46, 77, 0.55);
}

.page-about .about-entry--cyan::before {
  border-color: var(--cyan);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.5);
}

.page-about .about-entry--violet::before {
  border-color: var(--violet);
  box-shadow: 0 0 14px rgba(122, 92, 255, 0.55);
}

.page-about .about-entry--lime::before {
  border-color: var(--lime);
  box-shadow: 0 0 14px rgba(182, 255, 59, 0.42);
}

.page-about .about-entry__mark {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-entry__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about .about-entry__label {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--text-soft);
  background: rgba(10, 31, 68, 0.72);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%);
}

.page-about .about-entry__body h3 {
  margin: 0 0 12px;
  font-size: clamp(20px, 3.6vw, 28px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-entry__body p {
  margin: 0 0 12px;
  max-width: 42em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

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

.page-about .about-entry__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-entry__body a:hover {
  color: var(--paper);
}

/* ---------- 列表 ---------- */
.page-about .about-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .about-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-about .about-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 12px;
  height: 2px;
  background: var(--red);
}

.page-about .about-entry--cyan .about-list li::before {
  background: var(--cyan);
}

.page-about .about-entry--lime .about-list li::before {
  background: var(--lime);
}

/* ---------- 团队分工 ---------- */
.page-about .team-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 22px;
}

.page-about .team-bars {
  display: grid;
  gap: 18px;
  align-content: start;
}

.page-about .team-bar__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .team-bar__name {
  font-size: 15px;
  color: var(--text-soft);
}

.page-about .team-bar__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--lime);
  text-shadow: 0 0 10px rgba(182, 255, 59, 0.35);
}

.page-about .team-bar__track {
  display: block;
  height: 8px;
  background: rgba(42, 59, 92, 0.55);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%);
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  background: linear-gradient(90deg, var(--red), var(--violet));
}

.page-about .team-bar:nth-child(2) .team-bar__fill {
  background: linear-gradient(90deg, var(--violet), var(--cyan));
}

.page-about .team-bar:nth-child(3) .team-bar__fill {
  background: linear-gradient(90deg, var(--cyan), var(--lime));
}

.page-about .team-fig {
  margin: 0;
  border: 1px solid var(--about-line);
  background: var(--about-card);
  clip-path: var(--about-bevel);
  overflow: hidden;
}

.page-about .team-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(1.04) contrast(1.06);
}

/* ---------- 使用场景 ---------- */
.page-about .scenario-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 20px;
}

.page-about .scenario-card {
  padding: 16px 18px 18px;
  background: rgba(10, 31, 68, 0.62);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--cyan);
  clip-path: var(--about-bevel);
}

.page-about .scenario-card h4 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-about .scenario-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-about .scenario-card:nth-child(2) {
  border-left-color: var(--red);
}

.page-about .scenario-card:nth-child(3) {
  border-left-color: var(--violet);
}

.page-about .scenario-card:nth-child(4) {
  border-left-color: var(--lime);
}

/* ---------- 赛区标签墙 ---------- */
.page-about .partner-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-about .partner-cloud span {
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  background: var(--about-card);
  border: 1px solid var(--about-line);
  transform: rotate(-2deg);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%);
}

.page-about .partner-cloud span:nth-child(even) {
  transform: rotate(2deg);
  color: var(--cyan);
  border-color: rgba(0, 229, 255, 0.45);
}

/* ---------- 方法折叠卡 ---------- */
.page-about .method-stack {
  margin-top: 20px;
  display: grid;
  gap: 14px;
}

.page-about .method-step {
  background: var(--about-card);
  border: 1px solid var(--about-line);
  clip-path: var(--about-bevel);
  box-shadow: 6px 6px 0 rgba(42, 59, 92, 0.3);
}

.page-about .method-step > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
}

.page-about .method-step > summary::-webkit-details-marker {
  display: none;
}

.page-about .method-step > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--text-dim);
}

.page-about .method-step[open] > summary::after {
  content: "−";
  color: var(--violet);
}

.page-about .method-step__no {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--violet);
  padding: 3px 8px;
  border: 1px solid rgba(122, 92, 255, 0.5);
}

.page-about .method-step__t {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-about .method-step > .about-list {
  padding: 0 18px 18px;
  margin-top: 0;
}

/* ---------- 中国区服务 ---------- */
.page-about .region-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 20px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
  clip-path: var(--about-bevel);
}

.page-about .region-card {
  padding: 16px 18px;
  background: var(--about-card);
}

.page-about .region-card__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--red);
}

.page-about .region-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text-soft);
}

.page-about .about-region__note {
  margin-top: 20px;
  padding-left: 14px;
  border-left: 2px solid var(--about-line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 收尾 ---------- */
.page-about .about-outro {
  margin-top: 68px;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  background:
    repeating-linear-gradient(90deg, rgba(42, 59, 92, 0.22) 0 1px, transparent 1px 24px),
    linear-gradient(96deg, rgba(255, 46, 77, 0.16), rgba(0, 229, 255, 0.13));
}

.page-about .about-outro__in {
  padding: 40px 0 44px;
}

.page-about .about-outro h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .about-outro p {
  margin: 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-outro a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-outro a:hover {
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

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

@media (min-width: 992px) {
  .page-about .about-hero {
    padding: 40px 0 48px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: 52px;
  }

  .page-about .about-spine::before {
    left: 19px;
  }

  .page-about .about-entry {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 40px;
    padding-left: 60px;
    margin-bottom: 68px;
  }

  .page-about .about-entry::before {
    left: 12px;
  }

  .page-about .about-entry__mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-top: 4px;
  }

  .page-about .team-split {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 36px;
    align-items: start;
  }

  .page-about .about-outro__in {
    padding: 52px 0 56px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-entry__body > p {
    max-width: 38em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .partner-cloud span {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}