.page-about {
  --about-pad: clamp(56px, 8vw, 118px);
  background: var(--ink);
  color: var(--bone);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.8;
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about h4 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--bone);
}

.page-about p {
  margin: 0;
}

.page-about ul,
.page-about ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-about figure {
  margin: 0;
}

.page-about a {
  color: inherit;
}

/* ——— 首屏 ——— */
.about-hero {
  position: relative;
  padding: clamp(26px, 4vw, 52px) 0 var(--about-pad);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 6% 0%, rgba(110, 82, 168, 0.32) 0%, transparent 56%),
    radial-gradient(90% 74% at 96% 10%, rgba(232, 177, 90, 0.14) 0%, transparent 58%),
    var(--ink);
  overflow: hidden;
}

.about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(232, 177, 90, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 177, 90, 0.07) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(88% 78% at 14% 8%, #000 0%, transparent 74%);
  mask-image: radial-gradient(88% 78% at 14% 8%, #000 0%, transparent 74%);
}

.page-about .about-hero .container {
  position: relative;
  z-index: 1;
}

.about-hero__crumb {
  margin-bottom: clamp(26px, 5vw, 54px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.about-hero__crumb a {
  color: var(--cyan);
  text-decoration: none;
}

.about-hero__crumb a:hover {
  color: var(--gold);
}

.about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: start;
}

.about-hero__title {
  margin-top: 14px;
  font-size: clamp(38px, 7.4vw, 82px);
  max-width: 15ch;
}

.about-hero__title em {
  font-style: normal;
  color: var(--gold);
}

.about-hero__lede {
  margin-top: 22px;
  max-width: 60ch;
  font-size: clamp(15px, 1.5vw, 17px);
  color: var(--muted);
}

.about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.about-hero__badge {
  justify-self: center;
  width: min(100%, 300px);
  position: relative;
}

.about-hero__badge::before {
  content: "";
  position: absolute;
  inset: -14px -14px auto auto;
  width: 68px;
  height: 68px;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  pointer-events: none;
}

.about-hero__badge img {
  width: 100%;
  filter: drop-shadow(0 22px 44px rgba(232, 177, 90, 0.16));
}

.about-hero__stats {
  margin-top: clamp(40px, 6vw, 70px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-hero__stats li {
  background: var(--ink);
  padding: 20px 16px 22px;
  display: flex;
  flex-direction: column;
}

.about-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.about-hero__unit {
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.about-hero__label {
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ——— 通用区块 ——— */
.about-block {
  position: relative;
  padding: var(--about-pad) 0;
  border-bottom: 1px solid var(--line-soft);
}

.about-block__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: clamp(32px, 5vw, 54px);
}

.about-block__no {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.about-block__no::after {
  content: "";
  width: 48px;
  height: 1px;
  background: var(--line);
}

.about-block__title {
  font-size: clamp(28px, 4.6vw, 54px);
  max-width: 20ch;
}

.about-block__lede {
  font-size: 16px;
  color: var(--muted);
  max-width: 58ch;
}

.about-block__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.about-prose p + p {
  margin-top: 16px;
}

.about-aside {
  border-left: 2px solid var(--gold);
  padding: 4px 0 4px 18px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.about-aside__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.about-aside p + p {
  margin-top: 10px;
}

.about-aside__link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.about-aside__link a:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ——— 历程 ——— */
.about-history__figure {
  margin-bottom: clamp(32px, 5vw, 50px);
  border: 1px solid var(--line-soft);
  background: var(--panel);
}

.about-history__figure img {
  width: 100%;
  object-fit: cover;
}

.about-history__figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.about-timeline {
  position: relative;
  display: grid;
  gap: 0;
  padding-left: 26px;
  border-left: 1px solid var(--line);
}

.about-timeline__item {
  position: relative;
  padding-bottom: 30px;
}

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

.about-timeline__item::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 177, 90, 0.14);
}

.about-timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.about-timeline__title {
  margin-top: 6px;
  font-size: 19px;
}

.about-timeline__text {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  max-width: 46ch;
}

/* ——— 团队 ——— */
.about-team__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
}

.about-team__cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.about-team__card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--cyan);
}

.about-team__card::after {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 22px;
  height: 1px;
  background: var(--line);
}

.about-team__count {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  color: var(--gold);
}

.about-team__unit {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.about-team__role {
  margin-top: 14px;
  font-size: 18px;
}

.about-team__desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.about-team__figure {
  border: 1px solid var(--line-soft);
  background: var(--panel-2);
}

.about-team__figure img {
  width: 100%;
  object-fit: cover;
}

.about-team__figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  color: var(--muted);
}

.about-team__note {
  margin-top: clamp(26px, 4vw, 40px);
  max-width: 70ch;
}

/* ——— 产出筛选 ——— */
.about-filter {
  margin-top: clamp(34px, 5vw, 56px);
  padding-top: clamp(26px, 4vw, 38px);
  border-top: 1px solid var(--line);
}

.about-filter__title {
  font-size: clamp(20px, 2.4vw, 26px);
  margin-bottom: 20px;
}

.about-filter__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.about-filter__btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 8px 14px;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.about-filter__btn:hover,
.about-filter__btn:focus-visible {
  color: var(--gold);
  border-color: var(--gold);
  outline: none;
}

.about-filter__btn.is-active,
.about-filter__btn[aria-pressed="true"] {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink);
}

.about-filter__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.about-filter__item {
  padding: 16px 18px 18px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--cyan-dk);
}

.about-filter__item[data-tags="评测"] {
  border-left-color: var(--gold);
}

.about-filter__item[data-tags="教程"] {
  border-left-color: var(--cyan);
}

.about-filter__item[data-tags="回放"] {
  border-left-color: var(--violet);
}

.about-filter__item[data-tags="专题"] {
  border-left-color: var(--neon);
}

.about-filter__item.is-filtered-out {
  display: none;
}

.about-filter__tag {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.about-filter__name {
  margin-top: 8px;
  font-size: 16px;
  line-height: 1.5;
}

.about-filter__desc {
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.about-filter__status {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.about-filter__status:empty {
  display: none;
}

/* ——— 评分维度 ——— */
.about-scoring__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 58px);
  align-items: start;
}

.about-scoring__dial {
  width: min(100%, 320px);
  margin-inline: auto;
}

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

.dial-track {
  fill: none;
  stroke: rgba(237, 233, 224, 0.08);
  stroke-width: 2;
}

.dial-arc {
  fill: none;
  stroke-width: 10;
  stroke-linecap: butt;
  stroke-dasharray: 79.96 359.86;
  transition: stroke-width 0.3s ease;
}

.dial-arc--1 { stroke: var(--gold); }
.dial-arc--2 { stroke: var(--cyan); }
.dial-arc--3 { stroke: var(--amber); }
.dial-arc--4 { stroke: var(--violet); }
.dial-arc--5 { stroke: var(--neon); }

.dial-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
}

.dial-num--1 { fill: var(--gold); }
.dial-num--2 { fill: var(--cyan); }
.dial-num--3 { fill: var(--amber); }
.dial-num--4 { fill: #A18AD6; }
.dial-num--5 { fill: var(--neon); }

.about-scoring__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.about-scoring__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px 16px;
  background: var(--panel);
  border: 1px solid var(--line-soft);
}

.about-scoring__idx {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--gold);
}

.about-scoring__item:nth-child(2) .about-scoring__idx { color: var(--cyan); }
.about-scoring__item:nth-child(3) .about-scoring__idx { color: var(--amber); }
.about-scoring__item:nth-child(4) .about-scoring__idx { color: #A18AD6; }
.about-scoring__item:nth-child(5) .about-scoring__idx { color: var(--neon); }

.about-scoring__name {
  font-size: 16px;
}

.about-scoring__desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.about-scoring__meta {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-size: 14px;
}

.about-scoring__meta-item {
  color: var(--muted);
}

.about-scoring__meta-item b {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--gold);
  margin-right: 4px;
}

.about-scoring__more {
  margin-left: auto;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.about-scoring__more:hover {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

/* ——— 共创与合作 ——— */
.about-join__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.about-join__card {
  position: relative;
  padding: 26px 22px 26px;
  background: linear-gradient(158deg, var(--panel-2) 0%, var(--panel) 72%);
  border: 1px solid var(--line);
}

.about-join__card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 64px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.about-join__title {
  font-size: clamp(20px, 2.6vw, 25px);
}

.about-join__text {
  margin-top: 10px;
  font-size: 14px;
  color: var(--muted);
}

.about-join__list {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.about-join__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.75;
}

.about-join__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 9px;
  height: 1px;
  background: var(--gold);
}

.about-join__cta {
  margin-top: 24px;
}

/* ——— 延伸阅读 ——— */
.about-next {
  padding: var(--about-pad) 0 calc(var(--about-pad) * 0.72);
  background: linear-gradient(180deg, var(--ink) 0%, var(--panel) 100%);
  border-top: 1px solid var(--line);
}

.about-next__head {
  font-size: clamp(24px, 3.4vw, 38px);
}

.about-next__list {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.about-next__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 22px;
  background: var(--ink);
  border: 1px solid var(--line);
  text-decoration: none;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}

.about-next__link:hover,
.about-next__link:focus-visible {
  border-color: var(--gold);
  background: var(--panel-2);
  outline: none;
}

.about-next__kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.about-next__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  line-height: 1.4;
  color: var(--bone);
}

.about-next__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ——— 响应式 ——— */
@media (min-width: 620px) {
  .about-team__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 980px) {
  .about-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.78fr);
    align-items: end;
  }

  .about-hero__badge {
    justify-self: end;
    width: min(100%, 360px);
  }

  .about-block__head {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 46px;
    align-items: end;
  }

  .about-block__no {
    grid-column: 1 / -1;
  }

  .about-block__body--split {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .about-scoring__layout {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: center;
  }
}

@media (min-width: 1160px) {
  .about-team__layout {
    grid-template-columns: minmax(0, 1.72fr) minmax(0, 0.78fr);
    align-items: start;
  }

  .about-team__figure {
    margin-top: 2px;
  }

  .about-next__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .about-timeline {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .about-timeline__item {
    padding: 34px 18px 12px;
    border-right: 1px solid var(--line-soft);
  }

  .about-timeline__item:last-child {
    border-right: 0;
  }

  .about-timeline__item::before {
    left: 18px;
    top: -5px;
  }

  .about-timeline__item:nth-child(2) {
    padding-top: 56px;
  }

  .about-timeline__item:nth-child(3) {
    padding-top: 78px;
  }

  .about-timeline__item:nth-child(4) {
    padding-top: 100px;
  }

  .about-timeline__item:nth-child(5) {
    padding-top: 122px;
  }

  .about-timeline__text {
    max-width: none;
  }
}

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