.page-about {
  --about-rail-w: 220px;
  --about-gap: clamp(28px, 5vw, 64px);
  background: var(--ink-0);
  color: var(--text);
}

/* 首屏 */
.page-about .about-hero {
  padding: clamp(48px, 8vw, 96px) 0 clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(0, 229, 255, 0.05), transparent 60%),
    radial-gradient(1200px 480px at 82% -10%, rgba(255, 59, 59, 0.16), transparent 70%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-hero__intro .breadcrumb {
  margin-bottom: 18px;
  font-size: 12px;
  color: var(--muted);
}

.page-about .about-hero__intro .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-hero__intro .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
}

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

.page-about .about-hero h1 {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.03em;
  line-height: 1.1;
  font-size: clamp(30px, 5.2vw, 52px);
  color: var(--text);
  text-shadow: -1px 0 rgba(0, 229, 255, 0.35), 1px 0 rgba(255, 59, 59, 0.28);
}

.page-about .about-hero .lede {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  max-width: 66ch;
  margin: 0 0 24px;
}

.page-about .about-hero__points {
  list-style: none;
  margin: 0 0 28px;
  padding: 0 0 0 16px;
  display: grid;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--muted);
  border-left: 2px solid var(--cyan);
}

.page-about .about-hero__points .num {
  color: var(--cyan-soft);
  font-family: var(--font-num);
  font-size: 16px;
  margin-right: 4px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  clip-path: var(--shape-cut);
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 40%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.page-about .about-hero__figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--amber);
}

/* 正文骨架：左栏索引 + 右栏内容 */
.page-about .about-body {
  display: grid;
  gap: var(--about-gap);
  padding: clamp(32px, 6vw, 64px) 0 clamp(56px, 8vw, 96px);
}

.page-about .about-rail {
  border-left: 1px solid var(--line);
  padding-left: 18px;
}

.page-about .about-rail__title {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin: 0 0 16px;
}

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

.page-about .about-rail__link {
  display: flex;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--muted);
  text-decoration: none;
  padding: 2px 0;
  border-bottom: 1px solid transparent;
  transition: color var(--speed) ease, border-color var(--speed) ease;
}

.page-about .about-rail__link .num {
  font-family: var(--font-num);
  color: var(--line);
  transition: color var(--speed) ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible,
.page-about .about-rail__link[aria-current="true"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-about .about-rail__link:hover .num,
.page-about .about-rail__link[aria-current="true"] .num {
  color: var(--red);
}

.page-about .about-rail__note {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-hand);
}

/* 章节 */
.page-about .about-flow {
  display: grid;
  gap: clamp(40px, 7vw, 80px);
  min-width: 0;
}

.page-about .about-section {
  scroll-margin-top: 90px;
  min-width: 0;
}

.page-about .about-section__head {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .about-section__head .eyebrow {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
  margin: 0 0 10px;
}

.page-about .about-section h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: 0.02em;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.2;
  margin: 0;
  color: var(--text);
}

.page-about .about-section__lede {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 60ch;
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-about .about-section .prose p {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
  max-width: 68ch;
  margin: 0 0 16px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), var(--line) 70%, transparent);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px 34px;
  min-width: 0;
}

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

.page-about .about-timeline__marker {
  position: absolute;
  left: 0;
  top: 5px;
  width: 15px;
  height: 15px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-0);
  transition: box-shadow var(--speed) ease, background var(--speed) ease;
}

.page-about .about-timeline__item:hover .about-timeline__marker {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 255, 0.15), 0 0 16px rgba(0, 229, 255, 0.5);
}

.page-about .about-timeline__stage {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin: 0 0 6px;
}

.page-about .about-timeline__content h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
  color: var(--text);
}

.page-about .about-timeline__content p {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
  max-width: 64ch;
}

/* 团队 */
.page-about .about-team {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-team__roster {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-team__roster li {
  border-left: 2px solid var(--line);
  padding-left: 16px;
  transition: border-color var(--speed) ease;
}

.page-about .about-team__roster li:hover {
  border-color: var(--red);
}

.page-about .about-team__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  color: var(--text);
  margin: 0 0 6px;
}

.page-about .about-team__name .num {
  color: var(--red);
  font-family: var(--font-num);
  font-size: 15px;
}

.page-about .about-team__roster li > p:last-child {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: var(--shape-cut);
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--amber);
}

/* 流程图 */
.page-about .about-flowchart {
  margin: 0 0 clamp(22px, 4vw, 34px);
}

.page-about .about-flowchart img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  clip-path: var(--shape-cut);
  border: 1px solid var(--line);
  background: var(--ink-1);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: var(--shape-cut);
}

.page-about .about-steps__item {
  background: var(--ink-1);
  padding: clamp(18px, 3vw, 26px);
  position: relative;
}

.page-about .about-steps__no {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-about .about-steps__item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  margin: 0 0 8px;
  color: var(--text);
}

.page-about .about-steps__item p:last-child {
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0;
}

/* 内容来源 */
.page-about .about-sectors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 6px;
}

/* 回访玩家 */
.page-about .about-return {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-about .about-return__col h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  margin: 0 0 8px;
  color: var(--cyan-soft);
}

.page-about .about-return__col h3 + p {
  margin-bottom: 20px;
}

.page-about .about-return__panel {
  padding: 20px;
  margin-bottom: 20px;
}

.page-about .about-return__panel-title {
  font-size: 14px;
  color: var(--cyan);
  margin: 0 0 8px;
}

.page-about .about-return__panel p:last-child {
  font-family: var(--font-hand);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  margin: 0;
}

.page-about .about-return__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .about-return__links a {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--text);
  text-decoration: none;
  display: inline-block;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  transition: color var(--speed) ease, border-color var(--speed) ease;
}

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

/* CTA */
.page-about .about-cta {
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(0, 229, 255, 0.08), rgba(255, 59, 59, 0.08));
  clip-path: var(--shape-cut);
  padding: clamp(24px, 5vw, 44px);
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3vw, 28px);
  margin: 0 0 12px;
  color: var(--text);
}

.page-about .about-cta p {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
  max-width: 60ch;
  margin: 0 0 14px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

/* 桌面：非对称双栏 + 悬浮索引 */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-about .about-body {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 90px;
  }

  .page-about .about-section:nth-child(even) .about-section__head {
    padding-left: clamp(0px, 6vw, 72px);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-about .about-return {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-about .about-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-timeline__item {
    padding-left: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>

我已完成 about 页面（开服档案）的主体 HTML 与专属 CSS。

页面结构要点：
- **首屏**：非对称双栏，左栏为标题、导语、三条规模数据和 CTA；右栏为拼贴式主视觉占位图（800×1000）+ 手写体注释。
- **正文骨架**：桌面端采用「左侧粘性索引栏（章节编号 + 细线）+ 右侧不等长章节流」，偶数章节标题缩进错位，形成品牌手册的翻阅感；窄屏自动塌为单栏，索引移到顶部。
- **六个章节**：平台是什么、六个赛季时间轴、三组值守团队、四步排期流程、67 家合作方与六品类、回访玩家与两条路径分流。
- **视觉语言**：全部继承深空黑底、霓虹青结构色、开服红强调、暖黄手写批注；章节标题用细线分隔代替卡片边框，时间轴用内联节点圆环 + 渐变竖线。
- **交互**：章节索引链接使用 `data-scroll-spy`（配合 site.js），横向时间轴节点悬停发光，`prefers-reduced-motion` 下全部动效退化。
- **图片占位**：3 张，均为 `{zhanqunpic}` 协议，首屏不 lazy，其余 lazy+async。
- **内链**：全部指向 `/products/`、`/column/`、`/guide/`、`/contact/`、`/` 合法路由，无表单、无外链、无下载直链。