/* =========================================================
   关于我们 · 编辑式排版
   左栏：编号 + 分区标签 + 标题（桌面端吸顶）
   右栏：内容
   ========================================================= */
.page-about .page-body { padding-top: 0; }
.page-about .page-body .container { width: var(--shell); max-width: none; margin-inline: auto; padding: 0; }

.ab-sec {
  display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); column-gap: clamp(32px, 6vw, 96px);
  padding: clamp(72px, 9vw, 120px) 0;
  border-top: 1px solid var(--line);
}
.ab-sec:first-child { border-top: 0; }

.ab-head { position: sticky; top: calc(var(--header-h) + 40px); align-self: start; }
.ab-no {
  display: block; margin-bottom: 18px;
  font-size: 14px; font-weight: 600; letter-spacing: .12em; color: var(--accent-ink);
  font-variant-numeric: tabular-nums;
}
.ab-head .section-label { margin-bottom: 14px; }
.ab-title {
  margin: 0; font-size: clamp(30px, 3.4vw, 48px); font-weight: 650;
  line-height: 1.12; letter-spacing: -.035em; color: var(--ink);
}

.ab-main { min-width: 0; }
.ab-lead {
  margin: 0; font-size: clamp(20px, 1.9vw, 27px); font-weight: 500;
  line-height: 1.6; letter-spacing: -.012em; color: var(--ink);
  text-wrap: pretty;
}
.ab-lead-sm { font-size: clamp(18px, 1.5vw, 22px); }
.ab-text {
  margin: 28px 0 0; max-width: 46em;
  font-size: 17px; line-height: 1.95; color: var(--ink-2); text-wrap: pretty;
}

/* 数据条 */
.ab-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 56px 0 0; border-top: 1px solid var(--ink);
}
.ab-stats > div { padding: 22px 24px 0 0; }
.ab-stats > div + div { padding-left: 24px; border-left: 1px solid var(--line); }
.ab-stats dt { font-size: 13px; letter-spacing: .06em; color: var(--muted); }
.ab-stats dd { margin: 12px 0 0; display: flex; align-items: baseline; gap: 6px; }
.ab-stats b {
  font-size: clamp(34px, 3.6vw, 52px); font-weight: 650; line-height: 1;
  letter-spacing: -.04em; color: var(--ink); font-variant-numeric: tabular-nums;
}
.ab-stats small { font-size: 15px; color: var(--ink-2); }

/* 团队卡片 */
.ab-main .creators-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

/* 鸣谢名单：带编号的细线网格 */
.ab-fans {
  list-style: none; margin: 40px 0 0; padding: 0;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line); border-left: 1px solid var(--line);
  background: var(--surface); border-radius: 2px;
}
.ab-fan {
  display: flex; align-items: baseline; gap: 12px; min-width: 0;
  padding: 18px 18px;
  border-right: 1px solid var(--line); border-bottom: 1px solid var(--line);
  transition: background .25s, color .25s;
}
.ab-fan:hover { background: #fff7f2; }
.ab-fan:hover .ab-fan-name { color: var(--accent-ink); }
.ab-fan-no { font-size: 12px; letter-spacing: .08em; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.ab-fan-name {
  font-size: 16px; font-weight: 500; color: var(--ink);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* 加入我们：深色行动区 */
.ab-join {
  position: relative; overflow: hidden; isolation: isolate;
  display: flex; align-items: center; justify-content: space-between; gap: 40px;
  margin: 0 0 clamp(72px, 9vw, 120px);
  padding: clamp(40px, 5vw, 72px);
  border-radius: 28px; background: var(--navy); color: #fff;
}
.ab-join::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(50% 120% at 100% 0%, rgba(242, 102, 43, .32), transparent 70%),
    radial-gradient(40% 90% at 0% 100%, rgba(64, 120, 220, .22), transparent 70%);
}
.ab-join .section-label { color: var(--accent-soft); margin-bottom: 14px; }
.ab-join .ab-title { color: #fff; }
.ab-join-copy p:last-child { margin: 16px 0 0; font-size: 17px; line-height: 1.8; color: var(--muted-on-dark); }
.ab-join-btn {
  flex: none; display: inline-flex; align-items: center; gap: 12px;
  min-height: 60px; padding: 0 30px 0 26px; border: 0; border-radius: 999px;
  background: #fff; color: var(--ink); font: inherit; font-size: 17px; font-weight: 600; cursor: pointer;
  transition: transform .35s var(--ease-out), box-shadow .35s, background .25s, color .25s;
}
.ab-join-btn .ico { width: 22px; height: 22px; }
.ab-join-btn .i { width: 16px; height: 16px; transition: transform .35s var(--ease-out); }
.ab-join-btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 18px 40px rgba(242, 102, 43, .35); }
.ab-join-btn:hover .ico { filter: brightness(0) invert(1); }
.ab-join-btn:hover .i { transform: translate(2px, -2px); }
.ab-join-btn:focus-visible { outline: 3px solid var(--accent-soft); outline-offset: 3px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .ab-fans { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .ab-sec { grid-template-columns: 1fr; row-gap: 32px; padding: 64px 0; }
  .ab-head { position: static; }
  .ab-no { margin-bottom: 12px; }
  .ab-main .creators-grid { grid-template-columns: 1fr 1fr; }
  .ab-join { flex-direction: column; align-items: flex-start; gap: 28px; }
}
@media (max-width: 640px) {
  .ab-sec { padding: 52px 0; row-gap: 24px; }
  .ab-title { font-size: 30px; }
  .ab-lead { font-size: 19px; line-height: 1.7; }
  .ab-text { margin-top: 20px; font-size: 16px; line-height: 1.9; }
  .ab-stats { margin-top: 36px; }
  .ab-stats > div { padding: 18px 10px 0 0; }
  .ab-stats > div + div { padding-left: 14px; }
  .ab-stats b { font-size: 30px; }
  .ab-stats small { font-size: 13px; }
  .ab-main .creators-grid { grid-template-columns: 1fr; gap: 16px; }
  .ab-fans { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 28px; }
  .ab-fan { padding: 15px 14px; gap: 10px; }
  .ab-fan-name { font-size: 15px; }
  .ab-join { margin-bottom: 52px; padding: 36px 24px; border-radius: 22px; }
  .ab-join-btn { width: 100%; justify-content: center; min-height: 56px; }
}
.ab-stats b.ab-stat-word { font-size: clamp(26px, 2.6vw, 38px); letter-spacing: -.02em; white-space: nowrap; }
@media (max-width: 640px) { .ab-stats b.ab-stat-word { font-size: 22px; } }
@media (max-width: 360px) { .ab-stats b { font-size: 26px; } .ab-stats b.ab-stat-word { font-size: 19px; } }