.page-about {
  --about-figure-cap: clamp(12.5px, 1.6vw, 14px);
  background: var(--ink);
  color: var(--body);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(24px, 4vw, 42px) 0 clamp(38px, 6vw, 68px);
  background:
    radial-gradient(120% 80% at 88% 8%, rgba(182, 255, 59, 0.09), transparent 58%),
    radial-gradient(90% 70% at 6% 96%, rgba(255, 122, 26, 0.08), transparent 60%),
    linear-gradient(168deg, #0B0F14 0%, #10161F 48%, #0B0F14 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-about .about-hero__grid {
  position: absolute;
  inset: -10% -6%;
  z-index: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(118deg, rgba(182, 255, 59, 0.07) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(28deg, rgba(42, 52, 65, 0.6) 0 1px, transparent 1px 52px);
  -webkit-mask-image: radial-gradient(110% 85% at 84% 10%, #000 10%, transparent 74%);
  mask-image: radial-gradient(110% 85% at 84% 10%, #000 10%, transparent 74%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - var(--gut) * 2);
  margin-inline: auto;
}

.page-about .about-hero__split {
  display: grid;
  gap: clamp(26px, 5vw, 56px);
  margin-top: clamp(20px, 3.6vw, 38px);
}

@media (min-width: 900px) {
  .page-about .about-hero__split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

.page-about .about-hero__text .eyebrow {
  margin: 0;
}

.page-about .about-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.06;
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: clamp(14px, 2.4vw, 20px) 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 2.1vw, 17px);
  line-height: 1.78;
  color: var(--body);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about .about-hero__svg {
  width: min(100%, 420px);
  height: auto;
  filter: drop-shadow(0 0 28px rgba(182, 255, 59, 0.14));
}

.page-about .about-hero__figures {
  list-style: none;
  margin: clamp(30px, 5vw, 52px) 0 0;
  padding: clamp(18px, 2.6vw, 24px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

@media (min-width: 720px) {
  .page-about .about-hero__figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-fig {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-about .about-fig__v {
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--lime);
}

.page-about .about-fig__k {
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--muted);
}

/* ---------- 长卷骨架 ---------- */
.page-about .about-body {
  width: min(var(--shell), 100% - var(--gut) * 2);
  margin-inline: auto;
  padding: clamp(36px, 6vw, 72px) 0 clamp(48px, 7vw, 96px);
}

@media (min-width: 1040px) {
  .page-about .about-body {
    display: grid;
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(34px, 5vw, 80px);
    align-items: start;
  }
}

.page-about .about-rail {
  display: none;
}

@media (min-width: 1040px) {
  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--head-h) + 26px);
    padding-left: 16px;
    border-left: 1px solid var(--line);
  }
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 0;
  font-size: 14px;
  color: var(--body);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-rail__list a .u-mono {
  font-size: 11px;
  color: var(--muted);
  transition: color 0.2s var(--ease);
}

.page-about .about-rail__list a:hover,
.page-about .about-rail__list a:focus-visible {
  color: var(--lime);
  border-bottom-color: rgba(182, 255, 59, 0.4);
}

.page-about .about-rail__list a:hover .u-mono,
.page-about .about-rail__list a:focus-visible .u-mono {
  color: var(--lime);
}

.page-about .about-flow {
  display: grid;
  gap: clamp(46px, 7vw, 88px);
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  min-width: 0;
  scroll-margin-top: calc(var(--head-h) + 24px);
}

.page-about .about-chapter__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--line);
}

.page-about .about-chapter__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 64px;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), var(--orange));
}

.page-about .about-chapter__num {
  flex: 0 0 auto;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-about .about-chapter__head h2 {
  margin: 0;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.16;
  font-weight: 850;
  color: var(--white);
}

.page-about .about-chapter > * + * {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-chapter__intro {
  margin: 0;
  max-width: 68ch;
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.78;
  color: var(--body);
}

.page-about .about-chapter__cols {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

@media (min-width: 820px) {
  .page-about .about-chapter__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-about .about-chapter__main p {
  margin: 0;
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.78;
  color: var(--body);
}

.page-about .about-chapter__main p + p {
  margin-top: 14px;
}

/* ---------- 纸色面板 ---------- */
.page-about .paper-note {
  position: relative;
  background: var(--paper);
  color: #1B2129;
  border-radius: var(--radius);
  padding: 24px 22px 24px 26px;
  overflow: hidden;
  box-shadow: 0 20px 44px -30px rgba(0, 0, 0, 0.9);
}

.page-about .paper-note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--lime), var(--orange));
}

.page-about .paper-note__label {
  margin: 0 0 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #5B6573;
}

.page-about .paper-note__text {
  margin: 0;
  font-size: clamp(17px, 2.6vw, 21px);
  line-height: 1.5;
  font-weight: 800;
  color: #12181F;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-chapter .media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-chapter .media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-chapter .media__caption {
  padding: 10px 14px;
  font-size: var(--about-figure-cap);
  line-height: 1.6;
  color: var(--muted);
  background: rgba(11, 15, 20, 0.92);
  border-top: 1px solid var(--line);
}

/* ---------- 版本时间线 ---------- */
.page-about .ver-track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .ver-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-about .ver-item:hover {
  border-color: rgba(182, 255, 59, 0.38);
  border-left-color: var(--lime);
  background: #121A23;
  transform: translateX(6px);
}

.page-about .ver-item--current {
  border-left-color: var(--orange);
  background: linear-gradient(120deg, rgba(255, 122, 26, 0.1), rgba(21, 28, 36, 1) 62%);
}

.page-about .ver-item--current:hover {
  border-color: var(--orange);
  border-left-color: var(--orange);
}

.page-about .ver-item__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  padding: 5px 9px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #10161F;
  background: var(--lime);
  border-radius: 2px;
}

.page-about .ver-item--current .ver-item__tag {
  background: var(--orange);
}

.page-about .ver-item__text {
  min-width: 0;
}

.page-about .ver-item__text h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-about .ver-item__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--body);
}

/* ---------- 团队玻璃卡片 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

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

.page-about .glass-card {
  padding: 20px;
  border: 1px solid rgba(138, 148, 166, 0.2);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.012));
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-about .glass-card:hover {
  border-color: rgba(182, 255, 59, 0.45);
  box-shadow: 0 0 0 1px rgba(182, 255, 59, 0.12), 0 22px 42px -32px rgba(182, 255, 59, 0.6);
}

.page-about .glass-card__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  color: var(--white);
}

.page-about .glass-card__title::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 9px;
  background: var(--lime);
  transform: rotate(45deg) translateY(-1px);
}

.page-about .glass-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--body);
}

/* ---------- 广东服务中心 ---------- */
.page-about .gd-layout {
  display: grid;
  gap: clamp(20px, 3vw, 28px);
}

@media (min-width: 860px) {
  .page-about .gd-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: start;
  }
}

.page-about .gd-body p {
  margin: 0 0 18px;
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.78;
  color: var(--body);
}

.page-about .gd-facts {
  margin: 0;
  display: grid;
  border-top: 1px solid var(--line);
}

.page-about .gd-facts > div {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .gd-facts dt {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .gd-facts dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-about .about-numbers {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 780px) {
  .page-about .about-numbers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-about .about-num {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 16px 15px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 3px solid var(--lime);
  border-radius: var(--radius);
  min-width: 0;
  transition: border-top-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .about-num:nth-child(even) {
  border-top-color: var(--orange);
}

.page-about .about-num:hover {
  transform: translateY(-3px);
  border-top-color: var(--lime);
}

.page-about .about-num:nth-child(even):hover {
  border-top-color: var(--orange);
}

.page-about .about-num__v {
  font-size: clamp(26px, 4.4vw, 36px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--white);
}

.page-about .about-num__k {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--lime);
}

.page-about .about-num:nth-child(even) .about-num__k {
  color: var(--orange);
}

.page-about .about-num__d {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--muted);
  transition: color 0.25s var(--ease);
}

.page-about .about-num:hover .about-num__d {
  color: var(--body);
}

/* ---------- 合作与认可 ---------- */
.page-about .partner-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .partner-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--body);
}

.page-about .partner-list li::before {
  content: "";
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 9px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-about .paper-note--wide {
  padding: 26px 24px 26px 28px;
}

/* ---------- 未来方向 ---------- */
.page-about .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: about-next;
}

.page-about .next-list li {
  counter-increment: about-next;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--body);
}

.page-about .next-list li:first-child {
  border-top: 1px solid var(--line);
}

.page-about .next-list li::before {
  content: counter(about-next, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--lime);
  padding-top: 3px;
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  padding: clamp(40px, 6.5vw, 76px) 0;
  background:
    radial-gradient(100% 140% at 12% 0%, rgba(182, 255, 59, 0.12), transparent 62%),
    radial-gradient(90% 120% at 100% 100%, rgba(255, 122, 26, 0.1), transparent 58%),
    var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-cta__inner {
  width: min(var(--shell), 100% - var(--gut) * 2);
  margin-inline: auto;
  display: grid;
  gap: 22px;
}

@media (min-width: 900px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
    gap: 40px;
  }
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.16;
  font-weight: 850;
  color: var(--white);
}

.page-about .about-cta p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--body);
}

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

/* ---------- 动效 ---------- */
.page-about .ver-item,
.page-about .glass-card,
.page-about .about-num {
  will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ver-item,
  .page-about .glass-card,
  .page-about .about-num {
    transition: none;
  }
  .page-about .ver-item:hover,
  .page-about .about-num:hover {
    transform: none;
  }
}