/* ==========================================================
   品牌档案 / 杂志内页式阅读
   ========================================================== */

.page-about {
  --about-rule: rgba(34, 26, 20, 0.14);
  --about-rule-soft: rgba(34, 26, 20, 0.08);
  --about-paper-lift: rgba(255, 255, 255, 0.58);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 2.6rem 0 3rem;
  color: var(--cream);
  background:
    linear-gradient(166deg, var(--deep-2) 0%, var(--deep-1) 34%, var(--night) 68%, var(--indigo) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(58% 78% at 82% 10%, rgba(242, 201, 76, 0.18), transparent 62%),
    radial-gradient(46% 68% at 8% 92%, rgba(63, 191, 156, 0.14), transparent 66%),
    radial-gradient(34% 50% at 50% 118%, rgba(217, 80, 42, 0.14), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg, rgba(185, 194, 214, 0.5) 0 1px, transparent 1px 16px);
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-hero .crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--silver);
}

.page-about .about-hero .crumbs li {
  display: inline-flex;
  align-items: baseline;
}

.page-about .about-hero .crumbs li + li::before {
  content: "/";
  margin: 0 0.5rem;
  color: rgba(185, 194, 214, 0.45);
}

.page-about .about-hero .crumbs a {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-about .about-hero .crumbs a:hover,
.page-about .about-hero .crumbs a:focus-visible {
  color: var(--gold-hi);
  border-bottom-color: var(--gold-hi);
}

.page-about .about-hero__kicker {
  margin: 0 0 0.9rem;
  color: var(--gold-hi);
}

.page-about .about-hero h1 {
  margin: 0 0 1.15rem;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 6.2vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.page-about .about-hero__lede {
  max-width: 62ch;
  margin: 0 0 1.7rem;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(245, 238, 225, 0.86);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- 主体骨架：左索引 + 右叙事 ---------- */

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2rem;
  padding: 2.2rem 0 3rem;
}

@media (min-width: 900px) {
  .page-about .about-body {
    grid-template-columns: minmax(186px, 3fr) minmax(0, 9fr);
    gap: 3.6rem;
    padding: 3.6rem 0 4.6rem;
  }
}

.page-about .about-index {
  align-self: start;
}

@media (min-width: 900px) {
  .page-about .about-index {
    position: sticky;
    top: 6rem;
  }
}

.page-about .about-index__title {
  margin: 0 0 0.7rem;
  color: var(--coral);
}

.page-about .about-index__list {
  margin: 0 0 1.2rem;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-index__list li {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.7rem 0.2rem;
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.4;
  text-decoration: none;
  transition: color 0.24s var(--ease), padding-left 0.24s var(--ease);
}

.page-about .about-index__link .num {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  transition: color 0.24s var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--coral);
  padding-left: 0.55rem;
}

.page-about .about-index__link[aria-current="true"] {
  color: var(--coral);
  font-weight: 700;
}

.page-about .about-index__link[aria-current="true"] .num {
  color: var(--coral);
}

.page-about .about-index__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

/* ---------- 章节节奏 ---------- */

.page-about .about-sec {
  padding: 1.9rem 0;
  border-bottom: 1px dashed var(--about-rule);
}

.page-about .about-sec:first-child {
  padding-top: 0;
}

.page-about .about-sec:last-of-type {
  border-bottom: 0;
  padding-bottom: 0.6rem;
}

.page-about .about-sec .section__head {
  margin-bottom: 1.35rem;
}

.page-about .about-sec .section__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  line-height: 1.22;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.page-about .about-sec .section__desc {
  max-width: 58ch;
  margin-top: 0.6rem;
  line-height: 1.78;
}

/* ---------- 双栏编辑正文与首字下沉 ---------- */

.page-about .about-cols {
  display: grid;
  gap: 1.05rem;
}

@media (min-width: 760px) {
  .page-about .about-cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem 2.2rem;
  }
}

.page-about .about-cols p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.86;
  color: var(--ink);
}

.page-about .about-cols p:first-child::first-letter {
  float: left;
  margin: 0.06em 0.14em 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 3.1rem;
  line-height: 0.84;
  color: var(--coral);
}

/* ---------- 图片容器 ---------- */

.page-about .about-media {
  margin: 0 0 1.4rem;
  box-shadow: var(--shadow-paper);
}

.page-about .about-media--flow {
  margin-top: 0.2rem;
}

.page-about .about-media--crew {
  margin-bottom: 0;
}

/* ---------- 四类服务能力 ---------- */

.page-about .about-caps {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .page-about .about-caps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

.page-about .about-cap {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 1.15rem 1.05rem 1.1rem;
  background: var(--about-paper-lift);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--gold);
  transition: transform 0.28s var(--ease), box-shadow 0.28s var(--ease), border-left-color 0.28s var(--ease);
}

.page-about .about-cap:hover {
  transform: translateY(-3px);
  border-left-color: var(--coral);
  box-shadow: 0 12px 24px -16px rgba(14, 23, 51, 0.7);
}

.page-about .about-cap__no {
  display: block;
  margin-bottom: 0.55rem;
  font-size: 0.94rem;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .about-cap__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.05rem;
  line-height: 1.4;
  border-bottom: 2px solid var(--gold);
  padding-bottom: 0.42rem;
  align-self: flex-start;
}

.page-about .about-cap p {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  line-height: 1.78;
}

.page-about .about-cap__meta {
  color: rgba(34, 26, 20, 0.7);
}

.page-about .about-cap__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-num);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--coral);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 0.12rem;
  transition: color 0.24s var(--ease);
}

.page-about .about-cap__link:hover,
.page-about .about-cap__link:focus-visible {
  color: var(--night);
}

/* ---------- 数字带 ---------- */

.page-about .about-band {
  position: relative;
  overflow: hidden;
  margin: 1.6rem 0;
  padding: 1.5rem 1.15rem 1.4rem;
  color: var(--cream);
  background: linear-gradient(118deg, var(--deep-1) 0%, var(--indigo) 62%, var(--night) 100%);
  border-top: 1px solid rgba(217, 162, 39, 0.5);
  border-bottom: 1px solid rgba(217, 162, 39, 0.5);
}

.page-about .about-band::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background-image: repeating-linear-gradient(180deg, rgba(242, 201, 76, 0.7) 0 1px, transparent 1px 12px);
  opacity: 0.6;
  pointer-events: none;
}

.page-about .about-band__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem 1rem;
  margin: 0;
  padding: 0 0 0 0.6rem;
  list-style: none;
}

@media (min-width: 700px) {
  .page-about .about-band__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    padding-left: 1rem;
  }
}

.page-about .about-band__item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.page-about .about-band__num {
  font-size: clamp(1.7rem, 5.6vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-hi);
}

.page-about .about-band__num em {
  font-style: normal;
  font-size: 0.62em;
  color: var(--mint);
  padding-left: 0.1em;
}

.page-about .about-band__lab {
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--silver);
}

/* ---------- 团队构成 ---------- */

.page-about .about-crew-top {
  display: grid;
  gap: 1.4rem;
  margin-bottom: 1.5rem;
}

@media (min-width: 760px) {
  .page-about .about-crew-top {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 1.8rem;
  }
}

.page-about .about-ringwrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  padding: 1.15rem 0.9rem;
  background: var(--about-paper-lift);
  border: 1px solid var(--about-rule);
}

.page-about .about-ring {
  width: min(180px, 54vw);
  height: auto;
  display: block;
}

.page-about .about-ring__num {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 700;
  fill: var(--ink);
}

.page-about .about-ring__lab {
  font-family: var(--font-body);
  font-size: 9px;
  letter-spacing: 0.12em;
  fill: rgba(34, 26, 20, 0.66);
}

.page-about .about-ring__key {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.42rem 0.9rem;
  margin: 0;
  padding: 0;
  list-style: none;
  width: 100%;
  font-size: 0.76rem;
  line-height: 1.5;
}

.page-about .about-ring__key li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: rgba(34, 26, 20, 0.82);
}

.page-about .about-ring__key i {
  flex: none;
  width: 9px;
  height: 9px;
  display: block;
}

.page-about .about-crew-grid {
  display: grid;
  gap: 0.9rem;
}

@media (min-width: 720px) {
  .page-about .about-crew-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }
}

.page-about .about-crew {
  position: relative;
  padding: 1.1rem 1.05rem 1.05rem;
  background: var(--cream);
  border: 1px solid var(--about-rule);
  box-shadow: 3px 4px 0 -1px var(--paper-shadow);
  transition: border-color 0.28s var(--ease), box-shadow 0.28s var(--ease), transform 0.28s var(--ease);
}

.page-about .about-crew:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-about .about-crew:hover,
.page-about .about-crew:focus-within {
  border-color: rgba(217, 162, 39, 0.7);
  transform: translateY(-2px);
  box-shadow: 5px 7px 0 -1px var(--paper-shadow);
}

.page-about .about-crew__no {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  color: var(--coral);
}

.page-about .about-crew__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.4;
}

.page-about .about-crew p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.76;
}

.page-about .about-crew__extra {
  max-height: 14rem;
  opacity: 1;
  overflow: hidden;
  transition: max-height 0.36s var(--ease), opacity 0.36s var(--ease), margin-top 0.36s var(--ease);
}

.page-about .about-crew__extra p {
  margin-top: 0.62rem;
  padding-top: 0.62rem;
  border-top: 1px dashed var(--about-rule);
  color: rgba(34, 26, 20, 0.74);
  font-size: 0.86rem;
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .about-crew__extra {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
  }

  .page-about .about-crew:hover .about-crew__extra,
  .page-about .about-crew:focus-within .about-crew__extra {
    max-height: 14rem;
    opacity: 1;
  }
}

/* ---------- 成长阶段时间轴 ---------- */

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 1.5rem;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.55rem;
  bottom: 0.9rem;
  width: 1px;
  background: repeating-linear-gradient(180deg, rgba(34, 26, 20, 0.32) 0 5px, transparent 5px 11px);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 1.5rem;
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: -1.5rem;
  top: 0.42rem;
  width: 9px;
  height: 9px;
  background: var(--gold);
  border: 1px solid var(--night);
  transform: rotate(45deg);
}

.page-about .about-timeline__item:last-child .about-timeline__dot {
  background: var(--mint);
}

.page-about .about-timeline__stage {
  margin: 0 0 0.34rem;
  color: var(--coral);
}

.page-about .about-timeline__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.4;
}

.page-about .about-timeline__item > p:not(.label) {
  margin: 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.8;
  color: rgba(34, 26, 20, 0.84);
}

/* ---------- 选择理由 ---------- */

.page-about .about-why {
  display: grid;
  gap: 1.1rem;
}

@media (min-width: 760px) {
  .page-about .about-why {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.2rem;
  }
}

.page-about .about-why__card {
  padding: 1.2rem 1.05rem 1.15rem;
  border-top: 3px solid var(--gold);
}

.page-about .about-why__card:nth-child(2) {
  border-top-color: var(--mint);
}

.page-about .about-why__card:nth-child(3) {
  border-top-color: var(--coral);
}

.page-about .about-why__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.98rem;
  line-height: 1.46;
}

.page-about .about-why__card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.78;
  color: rgba(34, 26, 20, 0.84);
}

/* ---------- 收束 ---------- */

.page-about .about-close {
  position: relative;
  margin-top: 1rem;
  padding: 3rem 0 0;
  color: var(--cream);
  background: linear-gradient(200deg, var(--night) 0%, var(--deep-1) 56%, var(--deep-2) 100%);
  overflow: hidden;
}

.page-about .about-close::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(52% 70% at 82% 4%, rgba(242, 201, 76, 0.16), transparent 64%);
  pointer-events: none;
}

.page-about .about-close__inner {
  position: relative;
  padding-bottom: 3.6rem;
}

.page-about .about-close__title {
  margin: 0 0 0.8rem;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 4.6vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
}

.page-about .about-close__lede {
  max-width: 56ch;
  margin: 0 0 1.5rem;
  font-size: 0.98rem;
  line-height: 1.82;
  color: rgba(245, 238, 225, 0.84);
}

.page-about .about-close__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.page-about .about-skyline {
  display: block;
  width: 100%;
  height: 92px;
  color: var(--deep-2);
  opacity: 0.9;
}

@media (min-width: 900px) {
  .page-about .about-skyline {
    height: 128px;
  }
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-about .about-cap,
  .page-about .about-crew,
  .page-about .about-crew__extra,
  .page-about .about-index__link,
  .page-about .about-hero .crumbs a {
    transition: none !important;
  }

  .page-about .about-cap:hover,
  .page-about .about-crew:hover,
  .page-about .about-crew:focus-within {
    transform: none;
  }
}