.page-about {
  --about-gold-glow: rgba(212, 175, 55, 0.18);
  --about-purple-glow: rgba(157, 0, 255, 0.14);
  --about-blue-glow: rgba(0, 229, 255, 0.12);
  --about-number-size: 64px;
  --about-timeline-left: 18px;
  position: relative;
  background: var(--bg-main);
  color: var(--text-strong);
  overflow-x: hidden;
}

.page-about section {
  position: relative;
  padding: 52px 0;
}

.page-about .section-overline {
  margin-bottom: 10px;
}

.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  color: var(--text-strong);
}

.page-about .about-chapter-num {
  display: block;
  font-family: var(--font-number);
  font-size: var(--about-number-size);
  line-height: 0.9;
  font-weight: 700;
  color: rgba(212, 175, 55, 0.35);
  letter-spacing: -0.04em;
  user-select: none;
}

.page-about .about-section-head {
  display: grid;
  gap: 16px;
  margin-bottom: 32px;
}

.page-about .about-section-head h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-section-desc,
.page-about .about-mission-lead {
  margin: 0;
  color: var(--text-weak);
  line-height: 1.85;
  font-size: 15px;
  max-width: 62ch;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  background-image:
    radial-gradient(circle at 85% 18%, var(--about-purple-glow), transparent 36%),
    repeating-linear-gradient(135deg, transparent 0 18px, rgba(212, 175, 55, 0.028) 18px 20px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  padding-top: 28px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-about .about-hero-copy {
  min-width: 0;
}

.page-about .about-hero-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6vw, 56px);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}

.page-about .about-hero-title .title-sep {
  color: var(--gold);
  margin: 0 0.18em;
}

.page-about .about-hero-title .title-focus {
  color: var(--gold-bright);
}

.page-about .about-lead {
  margin-bottom: 24px;
}

.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 32px;
}

.page-about .hero-stat {
  border-left: 2px solid var(--gold);
  padding-left: 14px;
}

.page-about .hero-stat-num {
  display: block;
  font-family: var(--font-number);
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .hero-stat-num small {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--text-weak);
  margin-left: 2px;
}

.page-about .hero-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-weak);
}

.page-about .about-hero-visual {
  min-width: 0;
}

.page-about .about-hero-since {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-number);
  font-size: 13px;
  letter-spacing: 0.3em;
  color: var(--gold);
}

/* ---------- 图片切角框架 ---------- */
.page-about .about-visual-frame {
  position: relative;
  overflow: hidden;
  background: var(--bg-panel);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-about .about-visual-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 40%, rgba(249, 217, 118, 0.12) 48%, transparent 56%);
  pointer-events: none;
}

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

.page-about .about-image-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
}

/* ---------- 品牌定位 ---------- */
.page-about .about-mission-inner {
  display: grid;
  gap: 24px;
}

.page-about .about-mission-body h2 {
  margin: 0 0 14px;
  font-size: 28px;
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-about .about-mission-grid {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.page-about .mission-principle {
  position: relative;
  padding: 4px 0 4px 18px;
  border-left: 2px solid rgba(212, 175, 55, 0.55);
}

.page-about .mission-principle h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--gold-bright);
}

.page-about .mission-principle p {
  margin: 0;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .about-mission-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-about .mission-fact {
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 7px 13px;
  color: var(--text-weak);
  background: var(--bg-panel);
  border: 1px solid rgba(157, 0, 255, 0.32);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-milestones {
  background-image: linear-gradient(180deg, transparent 60%, rgba(157, 0, 255, 0.045) 100%);
}

.page-about .about-timeline-wrap {
  display: grid;
  gap: 32px;
}

.page-about .about-timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline-list::before {
  content: "";
  position: absolute;
  left: var(--about-timeline-left);
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold) 0%, var(--gold) 55%, var(--purple) 100%);
  opacity: 0.55;
}

.page-about .about-timeline-item {
  position: relative;
  padding-left: calc(var(--about-timeline-left) + 26px);
  margin-bottom: 18px;
}

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

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: calc(var(--about-timeline-left) - 7px);
  top: 24px;
  width: 16px;
  height: 16px;
  transform: rotate(45deg);
  background: var(--gold);
  border: 3px solid var(--bg-main);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.35);
  z-index: 1;
}

.page-about .timeline-card {
  background: var(--bg-panel);
  border-radius: var(--radius-cut);
  border: 1px solid rgba(212, 175, 55, 0.18);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about .timeline-card[open] {
  border-color: rgba(212, 175, 55, 0.42);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.32);
}

.page-about .timeline-card summary {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  transition: background 0.3s var(--ease-out);
}

.page-about .timeline-card summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline-card summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-number);
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
  transition: transform 0.3s var(--ease-out), color 0.3s;
}

.page-about .timeline-card[open] summary::after {
  transform: rotate(45deg);
  color: var(--purple-light);
}

.page-about .timeline-year {
  font-family: var(--font-number);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
}

.page-about .timeline-ver {
  font-family: var(--font-number);
  font-size: 12px;
  font-weight: 700;
  color: var(--gold);
  background: rgba(212, 175, 55, 0.12);
  padding: 2px 8px;
  border-radius: 2px;
}

.page-about .timeline-name {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-strong);
}

.page-about .timeline-detail {
  padding: 0 18px 16px;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .timeline-detail p {
  margin: 0;
}

.page-about .about-timeline-aside {
  min-width: 0;
}

.page-about .about-timeline-aside .about-image-note {
  text-align: right;
}

/* ---------- 服务能力 ---------- */
.page-about .about-services-wrap {
  display: grid;
  gap: 28px;
}

.page-about .about-services-main {
  display: grid;
  gap: 16px;
}

.page-about .service-card {
  position: relative;
  background: var(--bg-panel);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius-cut);
  padding: 22px 24px;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about .service-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.36);
}

.page-about .service-card-index {
  position: absolute;
  right: 16px;
  top: 12px;
  font-family: var(--font-number);
  font-size: 30px;
  font-weight: 700;
  color: rgba(212, 175, 55, 0.2);
  line-height: 1;
}

.page-about .service-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--gold-bright);
  padding-right: 34px;
}

.page-about .service-card p {
  margin: 0;
  color: var(--text-weak);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .about-services-aside {
  min-width: 0;
}

.page-about .service-link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  transition: color 0.3s var(--ease-out), gap 0.3s var(--ease-out);
}

.page-about .service-link-more:hover {
  color: var(--gold-bright);
  gap: 12px;
}

/* ---------- 玩家评价与荣誉 ---------- */
.page-about .about-reputation-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .reputation-stat {
  text-align: center;
  padding: 22px 12px;
  background: var(--bg-panel);
  border-radius: var(--radius-cut);
  border-bottom: 2px solid var(--purple);
}

.page-about .reputation-num {
  display: block;
  font-family: var(--font-number);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .reputation-num small {
  font-size: 14px;
  color: var(--text-weak);
}

.page-about .reputation-label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  color: var(--text-weak);
}

.page-about .about-reputation-grid {
  display: grid;
  gap: 16px;
}

.page-about .reputation-quote {
  position: relative;
  margin: 0;
  padding: 22px;
  background: var(--bg-panel);
  border-radius: var(--radius-cut);
  border-top: 2px solid var(--gold);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about .reputation-quote:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.36);
}

.page-about .reputation-quote::before {
  content: "“";
  position: absolute;
  top: -8px;
  right: 14px;
  font-family: var(--font-body);
  font-size: 64px;
  line-height: 1;
  color: rgba(212, 175, 55, 0.25);
}

.page-about .quote-stars {
  color: rgba(212, 175, 55, 0.28);
  letter-spacing: 4px;
  font-size: 18px;
  font-family: var(--font-body);
  transition: color 0.3s var(--ease-out), text-shadow 0.3s var(--ease-out);
}

.page-about .reputation-quote:hover .quote-stars {
  color: var(--gold-bright);
  text-shadow: 0 0 12px rgba(249, 217, 118, 0.45);
}

.page-about .reputation-quote p {
  margin: 12px 0 14px;
  color: var(--text-strong);
  line-height: 1.8;
  font-size: 15px;
}

.page-about .reputation-quote footer {
  font-size: 12px;
  color: var(--text-weak);
}

.page-about .about-awards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 36px;
}

.page-about .award-card {
  position: relative;
  padding: 22px 24px 22px 28px;
  background:
    linear-gradient(120deg, rgba(212, 175, 55, 0.1), transparent 60%),
    var(--bg-panel);
  border: 1px solid rgba(212, 175, 55, 0.22);
  border-radius: var(--radius-cut);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-about .award-year {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-number);
  font-size: 26px;
  font-weight: 700;
  color: var(--purple-light);
}

.page-about .award-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--gold-bright);
}

.page-about .award-note {
  margin: 0;
  color: var(--text-weak);
  line-height: 1.7;
  font-size: 14px;
}

/* ---------- 继续浏览 ---------- */
.page-about .about-next {
  background:
    radial-gradient(circle at 90% 20%, rgba(157, 0, 255, 0.1), transparent 38%),
    var(--bg-panel);
  border-top: 1px solid rgba(157, 0, 255, 0.22);
}

.page-about .about-next-inner {
  display: grid;
  gap: 24px;
}

.page-about .about-next-copy h2 {
  margin: 0 0 10px;
  font-size: 26px;
  line-height: 1.2;
  font-weight: 700;
}

.page-about .about-next-copy p {
  margin: 0;
  color: var(--text-weak);
  line-height: 1.8;
}

.page-about .about-next-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 章节目录 ---------- */
.page-about .about-chapter-dir {
  position: fixed;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 60;
  display: none;
  max-width: 190px;
  background: rgba(11, 11, 16, 0.84);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: var(--radius-cut);
  padding: 14px 16px;
}

.page-about .about-chapter-dir:empty {
  display: none !important;
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 600px) {
  .page-about .about-hero-stats {
    gap: 24px 40px;
  }

  .page-about .hero-stat-num {
    font-size: 36px;
  }
}

@media (min-width: 768px) {
  .page-about section {
    padding: 64px 0;
  }

  .page-about .about-reputation-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .reputation-num {
    font-size: 44px;
  }

  .page-about .about-reputation-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-awards {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-mission-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}

@media (min-width: 992px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 48px;
  }

  .page-about .about-hero-frame img {
    height: 460px;
  }

  .page-about .about-mission-inner {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-section-head {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 48px;
    margin-bottom: 40px;
  }

  .page-about .about-timeline-wrap {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-stack-frame img {
    height: 420px;
  }

  .page-about .about-services-wrap {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-services-frame img {
    height: 380px;
  }

  .page-about .service-card:nth-child(even) {
    margin-left: 32px;
  }

  .page-about .about-next-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 48px;
  }
}

@media (min-width: 1280px) {
  .page-about .about-chapter-dir {
    display: block;
  }

  .page-about .about-chapter-num {
    font-size: 108px;
  }
}

@media (hover: hover) {
  .page-about .timeline-card summary:hover {
    background: rgba(212, 175, 55, 0.07);
  }

  .page-about .timeline-card summary:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: -2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .service-card,
  .page-about .reputation-quote,
  .page-about .service-link-more {
    transition: none;
  }
}