.page-about {
  --about-line: rgba(11, 42, 37, .12);
  --about-line-dark: rgba(67, 240, 207, .26);
  background: var(--paper);
  color: var(--ink-900);
  overflow-x: clip;
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.25rem, 3.5vw, 2rem) 0 clamp(2.5rem, 6vw, 4.25rem);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -8% auto;
  height: 145%;
  z-index: -2;
  background:
    radial-gradient(58% 68% at 82% 8%, rgba(67, 240, 207, .34), transparent 62%),
    radial-gradient(56% 66% at 8% 0%, rgba(207, 239, 245, .95), transparent 70%),
    linear-gradient(158deg, #eef9f8 0%, #d9f1f4 46%, #f5fbf8 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -25%;
  right: 0;
  width: 46%;
  height: 150%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, .62), rgba(255, 255, 255, 0));
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-hero__crumbs {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

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

.page-about .about-hero__title {
  margin: .75rem 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 6.2vw, 4.15rem);
  line-height: 1.04;
  letter-spacing: -.025em;
  color: var(--ink-950);
}

.page-about .about-hero__lede {
  margin: 1.35rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 1.5rem 0 0;
  display: grid;
  gap: 1.35rem;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ink-900);
}

.page-about .about-hero__label {
  display: block;
  margin-top: .5rem;
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--slate);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(2.75rem, 7.5vw, 5.5rem) 0;
}

.page-about .about-section--paper {
  background: var(--paper);
}

.page-about .about-section--ice {
  background: linear-gradient(176deg, var(--ice) 0%, #e6f6f7 58%, var(--paper) 100%);
}

.page-about .about-section--ink {
  background: linear-gradient(164deg, var(--ink-950) 0%, var(--ink-900) 56%, #0d3129 100%);
  color: var(--paper);
}

.page-about .about-head {
  max-width: 44rem;
}

.page-about .about-chapter {
  display: inline-block;
  padding-bottom: .45rem;
  border-bottom: 2px solid currentColor;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .3em;
  color: var(--cyan-deep);
}

.page-about .about-section--ink .about-chapter {
  color: var(--cyan);
}

.page-about .about-head__title {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.5vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink-950);
}

.page-about .about-section--ink .about-head__title {
  color: var(--paper);
}

.page-about .about-head__lede {
  margin: 1rem 0 0;
  max-width: 40rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-section--ink .about-head__lede {
  color: rgba(245, 251, 248, .76);
}

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

.page-about .figure__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(155deg, var(--ice) 0%, #e9f7f8 62%, var(--paper) 100%);
}

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

.page-about .figure__caption {
  margin-top: .8rem;
  font-size: .82rem;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-about .about-section--ink .figure__frame {
  background: rgba(67, 240, 207, .08);
}

.page-about .about-section--ink .figure__caption {
  color: rgba(245, 251, 248, .52);
}

/* ---------- 01 品牌定位 ---------- */
.page-about .about-position {
  margin-top: clamp(2rem, 5vw, 3.25rem);
  display: grid;
  gap: 2rem;
}

.page-about .about-position__lead {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--slate);
}

.page-about .about-points {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.2rem;
}

.page-about .about-points__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: .4rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-points__tag {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--cyan-deep);
}

.page-about .about-points__title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-about .about-points__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 02 工作台时间轴 ---------- */
.page-about .about-workbench__figure {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-day {
  position: relative;
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
}

.page-about .about-day::before {
  content: "";
  position: absolute;
  left: .52rem;
  top: .5rem;
  bottom: .5rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(67, 240, 207, .1) 100%);
}

.page-about .about-day__item {
  position: relative;
  padding: 0 0 2.1rem 2.4rem;
}

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

.page-about .about-day__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .38rem;
  width: .9rem;
  height: .9rem;
  border-radius: 999px;
  background: var(--ink-950);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(67, 240, 207, .13);
}

.page-about .about-day__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-day__team {
  margin: .45rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-day__text {
  margin: .5rem 0 0;
  max-width: 42rem;
  font-size: .94rem;
  line-height: 1.85;
  color: rgba(245, 251, 248, .74);
}

/* ---------- 03 赛季阶段 ---------- */
.page-about .about-phases {
  list-style: none;
  counter-reset: phase;
  margin: clamp(2rem, 5vw, 2.85rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-phase {
  position: relative;
  padding: 1.5rem 1.35rem 1.6rem;
  border-radius: var(--radius-md);
  background: rgba(245, 251, 248, .88);
  border-top: 3px solid var(--cyan);
  box-shadow: 0 1px 0 rgba(11, 42, 37, .05);
}

.page-about .about-phase::before {
  counter-increment: phase;
  content: counter(phase, decimal-leading-zero);
  display: block;
  margin-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-about .about-phase__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-phase__text {
  margin: .6rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-phases__note {
  margin: 1.75rem 0 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-inline-link {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--ink-900);
}

/* ---------- 04 合作生态 ---------- */
.page-about .about-eco {
  margin-top: clamp(2rem, 5vw, 3rem);
  display: grid;
  gap: 1.15rem;
}

.page-about .about-eco__card {
  padding: 1.65rem 1.5rem 1.5rem;
  border-radius: var(--radius-lg);
}

.page-about .about-eco__card--media {
  background: linear-gradient(148deg, rgba(67, 240, 207, .34) 0%, rgba(207, 239, 245, .72) 100%);
  border-radius: 72px var(--radius-lg) var(--radius-lg) var(--radius-lg);
}

.page-about .about-eco__card--venue {
  background: linear-gradient(148deg, rgba(255, 138, 61, .26) 0%, rgba(245, 251, 248, .95) 100%);
  border-radius: var(--radius-lg) 72px var(--radius-lg) var(--radius-lg);
}

.page-about .about-eco__card--assoc {
  background: linear-gradient(148deg, rgba(216, 255, 106, .38) 0%, rgba(207, 239, 245, .78) 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 72px var(--radius-lg);
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 5.5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.045em;
  color: var(--ink-950);
}

.page-about .about-eco__title {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-eco__text {
  margin: .6rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .about-eco__more {
  margin-top: .9rem;
}

.page-about .about-eco__more summary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  list-style: none;
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ink-900);
}

.page-about .about-eco__more summary::-webkit-details-marker {
  display: none;
}

.page-about .about-eco__more summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--ink-700);
}

.page-about .about-eco__more[open] summary::after {
  content: "−";
}

.page-about .about-eco__more p {
  margin: .7rem 0 0;
  padding-top: .7rem;
  border-top: 1px solid rgba(11, 42, 37, .14);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .about-eco__figure {
  margin-top: clamp(1.75rem, 4.5vw, 2.75rem);
}

/* ---------- 05 团队分工 ---------- */
.page-about .about-team {
  margin-top: clamp(2rem, 5vw, 3rem);
}

.page-about .about-team__hub {
  position: relative;
  max-width: 22rem;
  margin: 0 auto 3rem;
  padding: 1.35rem 1.25rem 1.5rem;
  text-align: center;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--radius-lg);
  background: rgba(67, 240, 207, .07);
}

.page-about .about-team__hub::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -3rem;
  width: 1px;
  height: 3rem;
  background: var(--about-line-dark);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-about .about-team__hubtext {
  display: block;
  margin-top: .7rem;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(245, 251, 248, .7);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-role {
  position: relative;
  padding: 1.45rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(245, 251, 248, .055);
  border: 1px solid rgba(245, 251, 248, .1);
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .about-role__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-role__summary {
  margin: .55rem 0 0;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(245, 251, 248, .62);
}

.page-about .about-role__duties {
  list-style: none;
  margin: .95rem 0 0;
  padding: 0;
  display: grid;
  gap: .45rem;
  font-size: .85rem;
  line-height: 1.65;
  color: rgba(245, 251, 248, .76);
}

.page-about .about-role__duties li {
  padding-left: .9rem;
  position: relative;
}

.page-about .about-role__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .34rem;
  height: .34rem;
  border-radius: 999px;
  background: var(--cyan);
}

/* ---------- 06 服务文化 ---------- */
.page-about .about-service {
  margin-top: clamp(2rem, 5vw, 2.85rem);
  display: grid;
  gap: 1.1rem;
}

.page-about .about-service__card {
  padding: 1.5rem 1.35rem 1.5rem 1.5rem;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(100deg, rgba(207, 239, 245, .6) 0%, rgba(245, 251, 248, 0) 100%);
}

.page-about .about-service__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-service__text {
  margin: .55rem 0 0;
  font-size: .92rem;
  line-height: 1.82;
  color: var(--slate);
}

.page-about .about-service__note {
  margin: 1.85rem 0 0;
  max-width: 44rem;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta-band {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  background: linear-gradient(152deg, var(--ink-950) 0%, var(--ink-900) 62%, #0d3129 100%);
  color: var(--paper);
}

.page-about .about-cta {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: .9rem 0 0;
  max-width: 38rem;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(245, 251, 248, .74);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 40rem) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, auto));
    justify-content: start;
    gap: 2.75rem;
  }

  .page-about .about-points__item {
    grid-template-columns: 5.5rem 1fr;
    gap: 1.1rem;
    align-items: start;
  }

  .page-about .about-points__tag {
    padding-top: .15rem;
  }

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

@media (min-width: 56rem) {
  .page-about .about-position {
    grid-template-columns: 1.02fr .98fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-position__figure {
    position: sticky;
    top: 2rem;
  }

  .page-about .about-phases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .about-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 1.35rem;
  }

  .page-about .about-eco__card--venue {
    margin-top: 1.75rem;
  }

  .page-about .about-eco__card--assoc {
    margin-top: 3.5rem;
  }

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

  .page-about .about-role::before {
    content: "";
    position: absolute;
    top: -1rem;
    left: 50%;
    width: 1px;
    height: 1rem;
    background: var(--about-line-dark);
  }

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    gap: 2.5rem;
  }
}

@media (min-width: 68rem) {
  .page-about .about-phases {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 悬停展开职责摘要：仅在有精确指针的宽屏生效，触屏与无脚本环境保持完整可读 */
@media (hover: hover) and (pointer: fine) and (min-width: 56rem) {
  .page-about .about-role__duties {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .35s var(--ease), opacity .3s var(--ease), margin-top .35s var(--ease);
  }

  .page-about .about-role:hover {
    background: rgba(67, 240, 207, .1);
    border-color: rgba(67, 240, 207, .45);
    transform: translateY(-4px);
  }

  .page-about .about-role:hover .about-role__duties {
    max-height: 16rem;
    margin-top: .95rem;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-role__duties {
    transition: none !important;
    transform: none !important;
  }
}
</final_thought>

.page-about {
  --about-line: rgba(11, 42, 37, .12);
  --about-line-dark: rgba(67, 240, 207, .26);
  background: var(--paper);
  color: var(--ink-900);
  overflow-x: clip;
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(1.25rem, 3.5vw, 2rem) 0 clamp(2.5rem, 6vw, 4.25rem);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -8% auto;
  height: 145%;
  z-index: -2;
  background:
    radial-gradient(58% 68% at 82% 8%, rgba(67, 240, 207, .34), transparent 62%),
    radial-gradient(56% 66% at 8% 0%, rgba(207, 239, 245, .95), transparent 70%),
    linear-gradient(158deg, #eef9f8 0%, #d9f1f4 46%, #f5fbf8 100%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -25%;
  right: 0;
  width: 46%;
  height: 150%;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255, 255, 255, .62), rgba(255, 255, 255, 0));
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-hero__crumbs {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

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

.page-about .about-hero__title {
  margin: .75rem 0 0;
  max-width: 17ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.05rem, 6.2vw, 4.15rem);
  line-height: 1.04;
  letter-spacing: -.025em;
  color: var(--ink-950);
}

.page-about .about-hero__lede {
  margin: 1.35rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 1.5rem 0 0;
  display: grid;
  gap: 1.35rem;
  border-top: 1px solid var(--about-line);
}

.page-about .about-hero__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4.4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--ink-900);
}

.page-about .about-hero__label {
  display: block;
  margin-top: .5rem;
  font-size: .82rem;
  letter-spacing: .08em;
  color: var(--slate);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(2.75rem, 7.5vw, 5.5rem) 0;
}

.page-about .about-section--paper {
  background: var(--paper);
}

.page-about .about-section--ice {
  background: linear-gradient(176deg, var(--ice) 0%, #e6f6f7 58%, var(--paper) 100%);
}

.page-about .about-section--ink {
  background: linear-gradient(164deg, var(--ink-950) 0%, var(--ink-900) 56%, #0d3129 100%);
  color: var(--paper);
}

.page-about .about-head {
  max-width: 44rem;
}

.page-about .about-chapter {
  display: inline-block;
  padding-bottom: .45rem;
  border-bottom: 2px solid currentColor;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .3em;
  color: var(--cyan-deep);
}

.page-about .about-section--ink .about-chapter {
  color: var(--cyan);
}

.page-about .about-head__title {
  margin: 1rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 3.5vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
  color: var(--ink-950);
}

.page-about .about-section--ink .about-head__title {
  color: var(--paper);
}

.page-about .about-head__lede {
  margin: 1rem 0 0;
  max-width: 40rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--slate);
}

.page-about .about-section--ink .about-head__lede {
  color: rgba(245, 251, 248, .76);
}

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

.page-about .figure__frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(155deg, var(--ice) 0%, #e9f7f8 62%, var(--paper) 100%);
}

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

.page-about .figure__caption {
  margin-top: .8rem;
  font-size: .82rem;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--mist);
}

.page-about .about-section--ink .figure__frame {
  background: rgba(67, 240, 207, .08);
}

.page-about .about-section--ink .figure__caption {
  color: rgba(245, 251, 248, .52);
}

/* ---------- 01 品牌定位 ---------- */
.page-about .about-position {
  margin-top: clamp(2rem, 5vw, 3.25rem);
  display: grid;
  gap: 2rem;
}

.page-about .about-position__lead {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.9;
  color: var(--slate);
}

.page-about .about-points {
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.2rem;
}

.page-about .about-points__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: .4rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--about-line);
}

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

.page-about .about-points__tag {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--cyan-deep);
}

.page-about .about-points__title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.5;
  color: var(--ink-900);
}

.page-about .about-points__text {
  margin: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 02 工作台时间轴 ---------- */
.page-about .about-workbench__figure {
  margin-top: clamp(1.75rem, 4vw, 2.75rem);
}

.page-about .about-day {
  position: relative;
  list-style: none;
  margin: clamp(2rem, 5vw, 3rem) 0 0;
  padding: 0;
}

.page-about .about-day::before {
  content: "";
  position: absolute;
  left: .52rem;
  top: .5rem;
  bottom: .5rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(67, 240, 207, .1) 100%);
}

.page-about .about-day__item {
  position: relative;
  padding: 0 0 2.1rem 2.4rem;
}

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

.page-about .about-day__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .38rem;
  width: .9rem;
  height: .9rem;
  border-radius: 999px;
  background: var(--ink-950);
  border: 2px solid var(--cyan);
  box-shadow: 0 0 0 4px rgba(67, 240, 207, .13);
}

.page-about .about-day__time {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-day__team {
  margin: .45rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.12rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-day__text {
  margin: .5rem 0 0;
  max-width: 42rem;
  font-size: .94rem;
  line-height: 1.85;
  color: rgba(245, 251, 248, .74);
}

/* ---------- 03 赛季阶段 ---------- */
.page-about .about-phases {
  list-style: none;
  counter-reset: phase;
  margin: clamp(2rem, 5vw, 2.85rem) 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-phase {
  position: relative;
  padding: 1.5rem 1.35rem 1.6rem;
  border-radius: var(--radius-md);
  background: rgba(245, 251, 248, .88);
  border-top: 3px solid var(--cyan);
  box-shadow: 0 1px 0 rgba(11, 42, 37, .05);
}

.page-about .about-phase::before {
  counter-increment: phase;
  content: counter(phase, decimal-leading-zero);
  display: block;
  margin-bottom: .7rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--orange);
}

.page-about .about-phase__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-phase__text {
  margin: .6rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-phases__note {
  margin: 1.75rem 0 0;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--slate);
}

.page-about .about-inline-link {
  color: var(--cyan-deep);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--ink-900);
}

/* ---------- 04 合作生态 ---------- */
.page-about .about-eco {
  margin-top: clamp(2rem, 5vw, 3rem);
  display: grid;
  gap: 1.15rem;
}

.page-about .about-eco__card {
  padding: 1.65rem 1.5rem 1.5rem;
  border-radius: var(--radius-lg);
}

.page-about .about-eco__card--media {
  background: linear-gradient(148deg, rgba(67, 240, 207, .34) 0%, rgba(207, 239, 245, .72) 100%);
  border-radius: 72px var(--radius-lg) var(--radius-lg) var(--radius-lg);
}

.page-about .about-eco__card--venue {
  background: linear-gradient(148deg, rgba(255, 138, 61, .26) 0%, rgba(245, 251, 248, .95) 100%);
  border-radius: var(--radius-lg) 72px var(--radius-lg) var(--radius-lg);
}

.page-about .about-eco__card--assoc {
  background: linear-gradient(148deg, rgba(216, 255, 106, .38) 0%, rgba(207, 239, 245, .78) 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 72px var(--radius-lg);
}

.page-about .about-eco__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.2rem, 5.5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.045em;
  color: var(--ink-950);
}

.page-about .about-eco__title {
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-eco__text {
  margin: .6rem 0 0;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .about-eco__more {
  margin-top: .9rem;
}

.page-about .about-eco__more summary {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  list-style: none;
  font-size: .84rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--ink-900);
}

.page-about .about-eco__more summary::-webkit-details-marker {
  display: none;
}

.page-about .about-eco__more summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--ink-700);
}

.page-about .about-eco__more[open] summary::after {
  content: "−";
}

.page-about .about-eco__more p {
  margin: .7rem 0 0;
  padding-top: .7rem;
  border-top: 1px solid rgba(11, 42, 37, .14);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--ink-700);
}

.page-about .about-eco__figure {
  margin-top: clamp(1.75rem, 4.5vw, 2.75rem);
}

/* ---------- 05 团队分工 ---------- */
.page-about .about-team {
  margin-top: clamp(2rem, 5vw, 3rem);
}

.page-about .about-team__hub {
  position: relative;
  max-width: 22rem;
  margin: 0 auto 3rem;
  padding: 1.35rem 1.25rem 1.5rem;
  text-align: center;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--radius-lg);
  background: rgba(67, 240, 207, .07);
}

.page-about .about-team__hub::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -3rem;
  width: 1px;
  height: 3rem;
  background: var(--about-line-dark);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-about .about-team__hubtext {
  display: block;
  margin-top: .7rem;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(245, 251, 248, .7);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .about-role {
  position: relative;
  padding: 1.45rem 1.25rem;
  border-radius: var(--radius-md);
  background: rgba(245, 251, 248, .055);
  border: 1px solid rgba(245, 251, 248, .1);
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .about-role__name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-role__summary {
  margin: .55rem 0 0;
  font-size: .86rem;
  line-height: 1.7;
  color: rgba(245, 251, 248, .62);
}

.page-about .about-role__duties {
  list-style: none;
  margin: .95rem 0 0;
  padding: 0;
  display: grid;
  gap: .45rem;
  font-size: .85rem;
  line-height: 1.65;
  color: rgba(245, 251, 248, .76);
}

.page-about .about-role__duties li {
  padding-left: .9rem;
  position: relative;
}

.page-about .about-role__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: .34rem;
  height: .34rem;
  border-radius: 999px;
  background: var(--cyan);
}

/* ---------- 06 服务文化 ---------- */
.page-about .about-service {
  margin-top: clamp(2rem, 5vw, 2.85rem);
  display: grid;
  gap: 1.1rem;
}

.page-about .about-service__card {
  padding: 1.5rem 1.35rem 1.5rem 1.5rem;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(100deg, rgba(207, 239, 245, .6) 0%, rgba(245, 251, 248, 0) 100%);
}

.page-about .about-service__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.45;
  color: var(--ink-900);
}

.page-about .about-service__text {
  margin: .55rem 0 0;
  font-size: .92rem;
  line-height: 1.82;
  color: var(--slate);
}

.page-about .about-service__note {
  margin: 1.85rem 0 0;
  max-width: 44rem;
  font-size: .9rem;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta-band {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  background: linear-gradient(152deg, var(--ink-950) 0%, var(--ink-900) 62%, #0d3129 100%);
  color: var(--paper);
}

.page-about .about-cta {
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

.page-about .about-cta__title {
  margin: 0;
  max-width: 26ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: .9rem 0 0;
  max-width: 38rem;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(245, 251, 248, .74);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 40rem) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(3, minmax(0, auto));
    justify-content: start;
    gap: 2.75rem;
  }

  .page-about .about-points__item {
    grid-template-columns: 5.5rem 1fr;
    gap: 1.1rem;
    align-items: start;
  }

  .page-about .about-points__tag {
    padding-top: .15rem;
  }

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

@media (min-width: 56rem) {
  .page-about .about-position {
    grid-template-columns: 1.02fr .98fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-position__figure {
    position: sticky;
    top: 2rem;
  }

  .page-about .about-phases {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-about .about-eco {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 1.35rem;
  }

  .page-about .about-eco__card--venue {
    margin-top: 1.75rem;
  }

  .page-about .about-eco__card--assoc {
    margin-top: 3.5rem;
  }

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

  .page-about .about-role::before {
    content: "";
    position: absolute;
    top: -1rem;
    left: 50%;
    width: 1px;
    height: 1rem;
    background: var(--about-line-dark);
  }

  .page-about .about-cta {
    grid-template-columns: 1fr auto;
    gap: 2.5rem;
  }
}

@media (min-width: 68rem) {
  .page-about .about-phases {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 悬停展开职责摘要：仅在有精确指针的宽屏生效，触屏与无脚本环境保持完整可读 */
@media (hover: hover) and (pointer: fine) and (min-width: 56rem) {
  .page-about .about-role__duties {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .35s var(--ease), opacity .3s var(--ease), margin-top .35s var(--ease);
  }

  .page-about .about-role:hover {
    background: rgba(67, 240, 207, .1);
    border-color: rgba(67, 240, 207, .45);
    transform: translateY(-4px);
  }

  .page-about .about-role:hover .about-role__duties {
    max-height: 16rem;
    margin-top: .95rem;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-role,
  .page-about .about-role__duties {
    transition: none !important;
    transform: none !important;
  }
}