.page-about {
  --about-gap: clamp(28px, 5vw, 64px);
  --about-pad: clamp(20px, 3.4vw, 34px);
  display: block;
  color: var(--hbs-white);
}

.page-about .hbs-section {
  position: relative;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(20px, 4vw, 44px);
  padding-bottom: clamp(36px, 6vw, 72px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -18%;
  width: 64%;
  height: 150%;
  background: radial-gradient(closest-side, rgba(255, 90, 31, 0.20), transparent 72%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 46%;
  height: 90%;
  background: radial-gradient(closest-side, rgba(47, 224, 208, 0.14), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__copy .hbs-title {
  margin: 14px 0 18px;
}

.page-about .about-hero__copy .hbs-lead {
  max-width: 58ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__card {
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-xl);
  background:
    linear-gradient(155deg, rgba(22, 35, 58, 0.92), rgba(16, 26, 43, 0.86));
  padding: var(--about-pad);
  box-shadow: 0 26px 60px rgba(0, 0, 0, 0.42);
}

.page-about .about-hero__card-label {
  margin: 0 0 18px;
  color: var(--hbs-cyan);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-hero__stats li {
  display: grid;
  grid-template-columns: minmax(64px, auto) 1fr;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hbs-line-soft);
}

.page-about .about-hero__stats li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-hero__stat-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--hbs-mist);
}

/* ---------- 目录 ---------- */
.page-about .about-toc {
  position: relative;
  margin-bottom: clamp(32px, 5vw, 56px);
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-lg);
  background: rgba(11, 13, 16, 0.6);
  padding: var(--about-pad);
}

.page-about .about-toc::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 18%;
  bottom: 18%;
  width: 3px;
  border-radius: 3px;
  background: linear-gradient(180deg, var(--hbs-orange), var(--hbs-cyan));
}

.page-about .about-toc__label {
  margin: 0 0 16px;
  color: var(--hbs-mist);
}

.page-about .about-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-about .about-toc__list a {
  display: grid;
  grid-template-columns: 40px 1fr;
  align-items: baseline;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--hbs-r-sm);
  color: var(--hbs-white);
  text-decoration: none;
  font-size: 15px;
  transition: background 160ms var(--hbs-ease), color 160ms var(--hbs-ease);
}

.page-about .about-toc__list a .hbs-num {
  color: var(--hbs-mist-dim);
  font-size: 13px;
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible {
  background: rgba(255, 90, 31, 0.12);
  color: var(--hbs-orange);
}

.page-about .about-toc__list a:hover .hbs-num,
.page-about .about-toc__list a:focus-visible .hbs-num {
  color: var(--hbs-orange);
}

/* ---------- 通用章节头 ---------- */
.page-about .about-block__head {
  max-width: 62ch;
  margin-bottom: clamp(22px, 3.4vw, 38px);
}

.page-about .about-block__head .hbs-eyebrow {
  margin: 0 0 12px;
  color: var(--hbs-mist);
}

.page-about .hbs-chapter.is-current .hbs-eyebrow {
  color: var(--hbs-orange);
}

.page-about .about-block__lead {
  font-size: clamp(17px, 2.1vw, 20px);
  line-height: 1.7;
  max-width: 66ch;
}

.page-about .about-block__cols {
  display: grid;
  gap: clamp(20px, 3.4vw, 40px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-about .about-block__cols > div .hbs-text + .hbs-text {
  margin-top: 16px;
}

/* ---------- 01 我们做什么 ---------- */
.page-about .about-work__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-work__list li {
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-md);
  background: var(--hbs-ink);
  padding: 16px;
}

.page-about .about-work__list .hbs-num {
  display: block;
  font-size: 28px;
  font-weight: 700;
  color: var(--hbs-lime);
  line-height: 1.1;
}

.page-about .about-work__list small {
  font-size: 13px;
  margin-inline-start: 2px;
  color: var(--hbs-mist);
}

.page-about .about-work__list p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--hbs-mist);
}

/* ---------- 02 评测 ---------- */
.page-about .about-eval__top {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: start;
}

.page-about .about-eval__copy .hbs-text + .hbs-text {
  margin-top: 16px;
}

.page-about .about-eval__figure {
  margin: 0;
  border-radius: var(--hbs-r-lg);
  overflow: hidden;
  border: 1px solid var(--hbs-line);
  background: var(--hbs-ink);
}

.page-about .about-eval__figure .hbs-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-eval__figure .hbs-media__caption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--hbs-mist);
  border-top: 1px solid var(--hbs-line-soft);
}

.page-about .about-eval__ring {
  list-style: none;
  margin: clamp(30px, 5vw, 56px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-eval__ring li {
  position: relative;
  display: grid;
  grid-template-columns: 46px 1fr;
  grid-template-areas:
    "no name"
    "no text";
  gap: 2px 14px;
  padding: 18px 18px 18px 16px;
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-md);
  background: linear-gradient(120deg, rgba(22, 35, 58, 0.72), rgba(16, 26, 43, 0.5));
  transition: border-color 180ms var(--hbs-ease), transform 180ms var(--hbs-ease);
}

.page-about .about-eval__ring li:hover {
  border-color: var(--hbs-orange-deep);
  transform: translateX(3px);
}

.page-about .about-eval__no {
  grid-area: no;
  align-self: start;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: var(--hbs-pill);
  border: 2px solid var(--hbs-orange);
  color: var(--hbs-orange);
  font-size: 13px;
  font-weight: 700;
}

.page-about .about-eval__name {
  grid-area: name;
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--hbs-white);
}

.page-about .about-eval__ring p.hbs-text {
  grid-area: text;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--hbs-mist);
}

/* ---------- 03 数据来源 ---------- */
.page-about .about-source__intro {
  max-width: 68ch;
  font-size: clamp(16px, 1.9vw, 18px);
}

.page-about .about-source__flow {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: srcflow;
}

.page-about .about-source__flow li {
  position: relative;
  border-radius: var(--hbs-r-lg);
  border: 1px solid var(--hbs-line-soft);
  background: var(--hbs-ink);
  padding: 20px var(--about-pad);
  padding-inline-start: calc(var(--about-pad) + 6px);
}

.page-about .about-source__flow li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: var(--hbs-cyan);
}

.page-about .about-source__step {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--hbs-cyan);
  margin: 0 0 6px;
}

.page-about .about-source__step-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--hbs-white);
}

.page-about .about-source__flow p.hbs-text {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--hbs-mist);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team__figure {
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  border-radius: var(--hbs-r-lg);
  overflow: hidden;
  border: 1px solid var(--hbs-line);
  background: var(--hbs-ink);
}

.page-about .about-team__figure .hbs-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-team__role {
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-md);
  background: var(--hbs-ink-2);
  padding: 20px;
  transition: border-color 180ms var(--hbs-ease), background 180ms var(--hbs-ease);
}

.page-about .about-team__role:hover {
  border-color: var(--hbs-orange);
  background: rgba(22, 35, 58, 0.95);
}

.page-about .about-team__role-no {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--hbs-lime);
}

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

.page-about .about-team__role .hbs-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--hbs-mist);
}

.page-about .about-team__note {
  margin-top: clamp(20px, 3vw, 30px);
  max-width: 70ch;
  color: var(--hbs-mist);
  border-inline-start: 3px solid var(--hbs-orange);
  padding-inline-start: 16px;
}

/* ---------- 05 覆盖范围 ---------- */
.page-about .about-coverage__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: center;
}

.page-about .about-coverage__figure {
  margin: 0;
  border-radius: var(--hbs-r-lg);
  overflow: hidden;
  border: 1px solid var(--hbs-line);
  background: var(--hbs-ink);
}

.page-about .about-coverage__figure .hbs-media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 1 / 1;
}

.page-about .about-coverage__copy .hbs-eyebrow {
  margin: 0 0 12px;
  color: var(--hbs-mist);
}

.page-about .about-coverage__copy .hbs-text + .hbs-text {
  margin-top: 14px;
}

.page-about .about-coverage__bands {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-coverage__band {
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-md);
  padding: 16px 18px;
  background: linear-gradient(100deg, rgba(47, 224, 208, 0.08), rgba(16, 26, 43, 0.5));
}

.page-about .about-coverage__band-label {
  margin: 0 0 6px;
  color: var(--hbs-cyan);
}

.page-about .about-coverage__band .hbs-text {
  margin: 0;
  font-size: 14px;
  color: var(--hbs-mist);
}

/* ---------- 06 演进轨迹 ---------- */
.page-about .about-track__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 0;
}

.page-about .about-track__list::before {
  content: "";
  position: absolute;
  inset-inline-start: 6px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--hbs-orange), var(--hbs-cyan));
  opacity: 0.5;
}

.page-about .about-track__item {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 32px) 30px;
}

.page-about .about-track__item::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: var(--hbs-pill);
  background: var(--hbs-charcoal);
  border: 3px solid var(--hbs-orange);
}

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

.page-about .about-track__meta {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--hbs-mist-dim);
  text-transform: uppercase;
}

.page-about .about-track__title {
  margin: 6px 0 6px;
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--hbs-white);
}

.page-about .about-track__item .hbs-text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  color: var(--hbs-mist);
}

/* ---------- 07 合作 ---------- */
.page-about .about-partner__quote {
  position: relative;
  border-inline-start: 3px solid var(--hbs-orange);
  padding: 6px 0 6px 22px;
  margin-bottom: clamp(30px, 5vw, 56px);
}

.page-about .about-partner__quote::before {
  content: "“";
  position: absolute;
  inset-inline-start: -6px;
  top: -28px;
  font-family: var(--hbs-font-editorial);
  font-size: 72px;
  line-height: 1;
  color: rgba(255, 90, 31, 0.35);
}

.page-about .about-partner__quote-text {
  margin: 0;
  font-family: var(--hbs-font-editorial);
  font-size: clamp(19px, 2.6vw, 26px);
  line-height: 1.6;
  color: var(--hbs-white);
  max-width: 46ch;
}

.page-about .about-partner__grid {
  display: grid;
  gap: 14px;
}

.page-about .about-partner__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--hbs-line);
  border-radius: var(--hbs-r-lg);
  background: var(--hbs-ink);
  padding: var(--about-pad);
}

.page-about .about-partner__card-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--hbs-white);
}

.page-about .about-partner__card .hbs-text {
  margin: 0;
  flex: 1;
  font-size: 15px;
  color: var(--hbs-mist);
}

.page-about .about-partner__card .hbs-btn {
  align-self: flex-start;
}

.page-about .about-partner__close {
  margin-top: clamp(26px, 4vw, 42px);
  max-width: 66ch;
  color: var(--hbs-mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.32fr 1fr;
  }

  .page-about .about-block__cols {
    grid-template-columns: 1.15fr 1fr;
  }

  .page-about .about-eval__top {
    grid-template-columns: 1.1fr 1fr;
  }

  .page-about .about-coverage__grid {
    grid-template-columns: 1fr 1.1fr;
  }

  .page-about .about-coverage__bands {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-partner__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-eval__ring {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-toc__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-about .about-eval__ring {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 519px) {
  .page-about .about-work__list {
    grid-template-columns: 1fr;
  }

  .page-about .about-toc__list a {
    grid-template-columns: 34px 1fr;
    font-size: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-eval__ring li,
  .page-about .about-team__role,
  .page-about .about-toc__list a {
    transition: none;
  }

  .page-about .about-eval__ring li:hover {
    transform: none;
  }
}