/* ============================================
   关于NG赛场 · 页面专属样式
   作用域：.page-about
   ============================================ */

.page-about {
  --about-axis: #2A3A44;
  --about-axis-glow: #FF5A1F;
}

/* ---------- 首屏页刊头 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(32px, 6vw, 80px) 0 clamp(56px, 9vw, 120px);
  overflow: hidden;
}

.page-about .about-hero__eyebrow {
  margin: 24px 0 18px;
  color: var(--gray);
}

.page-about .about-hero__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(34px, 6vw, 76px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 0 0 clamp(20px, 3vw, 32px);
  max-width: 22ch;
}

.page-about .about-hero__hl {
  color: var(--orange);
  position: relative;
}

.page-about .about-hero__lede {
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.8;
  color: var(--white);
  max-width: 62ch;
  margin: 0 0 clamp(36px, 5vw, 56px);
  opacity: 0.88;
}

.page-about .about-hero__meta {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-hero__meta-item {
  background: var(--ink-deep);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero__meta-item .num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-about .about-hero__meta-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
}

.page-about .about-hero__axis {
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--about-axis) 12%, var(--about-axis) 88%, transparent);
  transform: rotate(-3deg);
  transform-origin: left center;
  pointer-events: none;
}

.page-about .about-hero__axis::after {
  content: "";
  position: absolute;
  right: 12%;
  top: -3px;
  width: 7px;
  height: 7px;
  background: var(--yellow);
}

/* ---------- 章节通用 ---------- */
.page-about .section {
  padding: clamp(48px, 7vw, 96px) 0;
}

.page-about .section__note {
  font-size: 13px;
  color: var(--gray);
}

/* ---------- 我们在做什么 ---------- */
.page-about .about-what__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-what__card {
  background: var(--ink);
  padding: clamp(22px, 3vw, 34px);
  position: relative;
  transition: background var(--t-mid) var(--ease);
}

.page-about .about-what__card--primary {
  background: var(--green);
}

.page-about .about-what__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin: 0 0 16px;
}

.page-about .about-what__title {
  font-size: clamp(19px, 2vw, 24px);
  font-weight: 800;
  color: var(--white);
  margin: 0 0 14px;
  line-height: 1.3;
}

.page-about .about-what__body {
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
  opacity: 0.85;
  margin: 0 0 20px;
}

.page-about .about-what__scene {
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  color: var(--ice);
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

/* ---------- 团队与分工 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .about-team__text {
  color: var(--white);
}

.page-about .about-team__text .lede {
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
  color: var(--white);
  margin: 0 0 clamp(28px, 3vw, 40px);
}

.page-about .about-team__roles {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__role {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 22px 0;
  background: var(--ink);
  align-items: start;
}

.page-about .about-team__role-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--yellow);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  padding-top: 2px;
}

.page-about .about-team__role-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  margin: 0 0 8px;
}

.page-about .about-team__role-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
  margin: 0;
}

.page-about .about-team__footnote {
  font-size: 14px;
  line-height: 1.85;
  color: var(--gray);
  margin: 28px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

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

.page-about .about-team__media .media {
  border: 1px solid var(--line);
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

/* ---------- 版本演进 ---------- */
.page-about .about-version {
  background: linear-gradient(180deg, var(--ink) 0%, var(--ink-deep) 100%);
}

.page-about .about-version__figure {
  margin: 0 0 clamp(36px, 5vw, 56px);
}

.page-about .about-version__figure .media {
  border: 1px solid var(--line);
}

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

.page-about .about-version__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.page-about .about-version__timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line) 0%, var(--orange) 100%);
  transform: skewX(-6deg);
}

.page-about .about-version__node {
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 20px;
  padding-bottom: clamp(24px, 3vw, 36px);
  position: relative;
}

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

.page-about .about-version__marker {
  position: relative;
  padding-top: 2px;
}

.page-about .about-version__marker::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--ice);
  transform: rotate(45deg);
}

.page-about .about-version__node--current .about-version__marker::before {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 90, 31, 0.18);
}

.page-about .about-version__marker .num {
  display: none;
}

.page-about .about-version__card {
  background: var(--ink);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  padding: clamp(18px, 2.4vw, 26px);
  transition: border-color var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.page-about .about-version__card:hover {
  border-left-color: var(--orange);
  transform: translateX(4px);
}

.page-about .about-version__card .label {
  display: block;
  margin-bottom: 10px;
  color: var(--gray);
}

.page-about .about-version__card .label--new {
  color: var(--yellow);
}

.page-about .about-version__title {
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 700;
  color: var(--white);
  margin: 0 0 10px;
  line-height: 1.35;
}

.page-about .about-version__desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
  margin: 0;
  max-width: 62ch;
}

.page-about .about-version__archive {
  margin-top: clamp(32px, 4vw, 48px);
}

.page-about .about-version__archive p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--white);
  opacity: 0.88;
  margin: 0 0 16px;
}

.page-about .about-version__archive-link {
  margin: 0;
}

/* ---------- 内容合作 ---------- */
.page-about .about-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}

.page-about .about-partner__text {
  color: var(--white);
}

.page-about .about-partner__text p {
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 18px;
  opacity: 0.88;
}

.page-about .about-partner__text .lede {
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.8;
}

.page-about .about-partner__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: clamp(24px, 3vw, 32px);
}

.page-about .about-partner__stats .stat {
  background: var(--ink);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-partner__stats .stat__value .num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  color: var(--ice);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.page-about .about-partner__stats .stat__label {
  font-size: 12px;
  color: var(--gray);
  line-height: 1.4;
}

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

.page-about .about-partner__network {
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-about .about-partner__network svg {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 更新节奏 ---------- */
.page-about .about-rhythm__flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .about-rhythm__step {
  background: var(--ink);
  padding: clamp(22px, 3vw, 32px) 0;
  position: relative;
}

.page-about .about-rhythm__t {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
  font-variant-numeric: tabular-nums;
}

.page-about .about-rhythm__step-title {
  font-size: clamp(17px, 1.8vw, 20px);
  font-weight: 700;
  color: var(--white);
  margin: 0 0 10px;
}

.page-about .about-rhythm__step-desc {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
  margin: 0;
  max-width: 46ch;
}

.page-about .about-rhythm__note {
  font-size: 14px;
  line-height: 1.85;
  color: var(--gray);
  margin: clamp(24px, 3vw, 32px) 0 0;
}

.page-about .about-rhythm__note a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--t-fast) var(--ease);
}

.page-about .about-rhythm__note a:hover,
.page-about .about-rhythm__note a:focus-visible {
  color: var(--yellow);
}

/* ---------- 服务档位 ---------- */
.page-about .about-plans__list {
  border-top: 1px solid var(--line);
}

.page-about .about-plans__row {
  display: grid;
  grid-template-columns: 40px 1fr 24px;
  grid-template-areas:
    "code name arrow"
    "code who arrow";
  align-items: center;
  gap: 4px 14px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background var(--t-mid) var(--ease), padding var(--t-mid) var(--ease);
}

.page-about .about-plans__row:hover,
.page-about .about-plans__row:focus-visible {
  background: var(--green);
  padding-left: 12px;
}

.page-about .about-plans__code {
  grid-area: code;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
  align-self: center;
}

.page-about .about-plans__name {
  grid-area: name;
  font-size: clamp(17px, 1.8vw, 21px);
  font-weight: 700;
  color: var(--white);
}

.page-about .about-plans__who {
  grid-area: who;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--gray);
}

.page-about .about-plans__arrow {
  grid-area: arrow;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gray);
  transition: color var(--t-mid) var(--ease), transform var(--t-mid) var(--ease);
}

.page-about .about-plans__row:hover .about-plans__arrow,
.page-about .about-plans__row:focus-visible .about-plans__arrow {
  color: var(--yellow);
  transform: translateX(4px);
}

.page-about .about-plans__cta {
  margin-top: clamp(32px, 4vw, 48px);
  padding: clamp(24px, 3vw, 34px);
  background: var(--green);
  border-left: 3px solid var(--orange);
}

.page-about .about-plans__cta-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
  margin: 0 0 20px;
  max-width: 60ch;
}

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

/* ---------- 媒体容器补强 ---------- */
.page-about .media {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
}

.page-about .media__index {
  position: absolute;
  top: 12px;
  left: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
  background: rgba(14, 17, 19, 0.78);
  padding: 3px 8px;
}

.page-about .media__caption {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--gray);
  margin-top: 10px;
}

/* ---------- 响应式：平板及以上 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__meta {
    grid-template-columns: repeat(4, 1fr);
  }

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

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

  .page-about .about-rhythm__step {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-about .about-rhythm__step:not(:last-child) {
    border-right: 1px solid var(--line);
  }

  .page-about .about-plans__row {
    grid-template-columns: 64px 220px 1fr 32px;
    grid-template-areas: "code name who arrow";
    gap: 20px;
    padding: 26px 0;
  }
}

/* ---------- 响应式：桌面 ---------- */
@media (min-width: 1000px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-about .about-partner__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 420px);
  }

  .page-about .about-version__node {
    grid-template-columns: 96px 1fr;
    gap: 32px;
  }

  .page-about .about-version__timeline::before {
    left: 11px;
  }

  .page-about .about-version__marker .num {
    display: block;
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 700;
    color: var(--gray);
    margin-top: 14px;
    padding-left: 0;
    font-variant-numeric: tabular-nums;
  }

  .page-about .about-version__node--current .about-version__marker .num {
    color: var(--yellow);
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-version__card,
  .page-about .about-plans__row,
  .page-about .about-plans__arrow {
    transition: none;
  }

  .page-about .about-version__card:hover {
    transform: none;
  }
}