/* ===== 商务合作 /cooperation/ ===== */
.page-contact {
  --pc-rail-top: 96px;
  --pc-fill: 50%;
}

/* --- 首屏 --- */
.page-contact .pc-hero {
  padding-block: clamp(26px, 5vw, 54px) 10px;
}

.page-contact .pc-hero__grid {
  display: grid;
  gap: 30px;
}

.page-contact .pc-hero__copy {
  max-width: 64ch;
}

.page-contact .pc-hero__title {
  font-family: var(--fsa-font-display);
  font-size: clamp(32px, 5.6vw, 66px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  margin: 10px 0 18px;
  max-width: 20ch;
}

.page-contact .pc-hero__lede {
  max-width: 56ch;
}

.page-contact .pc-hero__actions {
  margin-top: 26px;
}

.page-contact .pc-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--fsa-line);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  overflow: hidden;
}

.page-contact .pc-hero__stats > div {
  background: var(--fsa-panel);
  padding: 16px 18px;
}

.page-contact .pc-hero__stats dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fsa-muted);
  text-transform: uppercase;
  line-height: 1.4;
}

.page-contact .pc-hero__stats dd {
  margin: 8px 0 0;
  font-family: var(--fsa-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.6vw, 22px);
  color: var(--fsa-accent);
  letter-spacing: -0.01em;
}

@media (min-width: 900px) {
  .page-contact .pc-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(270px, 0.85fr);
    align-items: end;
    gap: 52px;
  }
}

/* --- 主体双栏：左锚点 + 右内容 --- */
.page-contact .pc-layout {
  display: grid;
  gap: 34px;
  padding-block: 30px 84px;
}

@media (min-width: 1000px) {
  .page-contact .pc-layout {
    grid-template-columns: 274px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
}

/* 左侧常驻信息锚点 */
.page-contact .pc-rail {
  background: linear-gradient(160deg, var(--fsa-panel) 0%, rgba(16, 27, 45, 0.6) 100%);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  padding: 22px 20px;
}

@media (min-width: 1000px) {
  .page-contact .pc-rail {
    position: sticky;
    top: var(--pc-rail-top);
  }
}

.page-contact .pc-rail__title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fsa-muted);
}

.page-contact .pc-rail__block {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 12px 0;
  border-top: 1px solid var(--fsa-line);
}

.page-contact .pc-rail__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--fsa-muted);
}

.page-contact .pc-rail__val {
  font-family: var(--fsa-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--fsa-text);
  overflow-wrap: anywhere;
  line-height: 1.5;
}

.page-contact .pc-rail__hint {
  margin: 14px 0 18px;
  padding-top: 14px;
  border-top: 1px solid var(--fsa-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fsa-muted);
}

.page-contact .pc-rail__nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-contact .pc-rail__nav a {
  display: block;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--fsa-r-sm) var(--fsa-r-sm) 0;
  color: var(--fsa-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--fsa-t-fast), background var(--fsa-t-fast), border-color var(--fsa-t-fast);
}

.page-contact .pc-rail__nav a:hover,
.page-contact .pc-rail__nav a:focus-visible {
  color: var(--fsa-text);
  background: rgba(47, 211, 233, 0.08);
  border-left-color: var(--fsa-accent);
  outline: none;
}

/* --- 区块通用 --- */
.page-contact .pc-sec {
  margin-bottom: 60px;
  scroll-margin-top: 120px;
}

.page-contact .pc-sec:last-child {
  margin-bottom: 0;
}

.page-contact .pc-sec__head {
  margin-bottom: 22px;
}

.page-contact .pc-sec__head .fsa-h2 {
  margin-bottom: 10px;
}

.page-contact .pc-sec__head .fsa-text {
  max-width: 62ch;
}

/* --- 通栏图片 --- */
.page-contact .pc-banner {
  aspect-ratio: 1400 / 620;
  margin: 0 0 24px;
  border-radius: var(--fsa-r-lg);
  overflow: hidden;
  border: 1px solid var(--fsa-line);
}

.page-contact .pc-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- 三类合作方向（不等宽卡片） --- */
.page-contact .pc-dirs {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 760px) {
  .page-contact .pc-dirs {
    grid-template-columns: 1.25fr 1fr 0.95fr;
  }
}

.page-contact .pc-dir {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--fsa-panel);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  padding: 24px 20px 20px;
  transition: transform var(--fsa-t-fast), border-color var(--fsa-t-fast), box-shadow var(--fsa-t-fast);
}

.page-contact .pc-dir::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--fsa-r) var(--fsa-r) 0 0;
}

.page-contact .pc-dir--autumn::before {
  background: linear-gradient(90deg, var(--fsa-autumn), rgba(245, 165, 36, 0));
}

.page-contact .pc-dir--winter::before {
  background: linear-gradient(90deg, var(--fsa-winter), rgba(215, 227, 242, 0));
}

.page-contact .pc-dir:hover,
.page-contact .pc-dir:focus-within,
.page-contact .pc-dir:focus {
  transform: translateY(-2px);
  border-color: var(--fsa-accent);
  outline: none;
}

.page-contact .pc-dir__title {
  margin: 14px 0 10px;
}

.page-contact .pc-dir__body {
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
}

.page-contact .pc-dir__spec {
  margin: 18px 0 0;
  display: grid;
  gap: 10px;
}

.page-contact .pc-dir__spec > div {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding-top: 10px;
  border-top: 1px solid var(--fsa-line);
}

.page-contact .pc-dir__spec dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--fsa-muted);
}

.page-contact .pc-dir__spec dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--fsa-text);
}

.page-contact .pc-dir__more {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height var(--fsa-t-slow) ease, opacity var(--fsa-t-fast) ease, margin var(--fsa-t-slow) ease;
}

.page-contact .pc-dir:hover .pc-dir__more,
.page-contact .pc-dir:focus-within .pc-dir__more,
.page-contact .pc-dir:focus .pc-dir__more {
  max-height: 420px;
  opacity: 1;
  margin-top: 18px;
}

.page-contact .pc-dir__morelabel {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fsa-autumn);
  text-transform: uppercase;
}

.page-contact .pc-dir--winter .pc-dir__morelabel {
  color: var(--fsa-winter);
}

/* --- 通用条目列表 --- */
.page-contact .pc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .pc-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--fsa-muted);
}

.page-contact .pc-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 1px;
  background: var(--fsa-accent);
}

/* --- 已落地的合作 --- */
.page-contact .pc-record {
  display: grid;
  gap: 26px;
}

@media (min-width: 860px) {
  .page-contact .pc-record {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}

.page-contact .pc-record__bars {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 18px;
}

.page-contact .pc-record__bars li {
  display: grid;
  grid-template-columns: minmax(96px, 132px) minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
}

.page-contact .pc-record__lbl {
  font-size: 13px;
  color: var(--fsa-muted);
  line-height: 1.5;
}

.page-contact .pc-bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: rgba(34, 49, 74, 0.9);
  overflow: hidden;
}

.page-contact .pc-bar i {
  display: block;
  height: 100%;
  width: var(--pc-fill, 50%);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--fsa-autumn) 0%, var(--fsa-winter) 100%);
}

.page-contact .pc-record__val {
  font-family: var(--fsa-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  color: var(--fsa-text);
  white-space: nowrap;
}

.page-contact .pc-record__side {
  display: grid;
  gap: 14px;
  padding-left: 0;
}

@media (min-width: 860px) {
  .page-contact .pc-record__side {
    padding-left: 24px;
    border-left: 1px solid var(--fsa-line);
  }
}

.page-contact .pc-record__side .fsa-text {
  margin: 0;
  font-size: 15px;
}

/* --- 斜切分隔 --- */
.page-contact .pc-cut {
  position: relative;
  height: 58px;
  margin-block: 0 46px;
}

.page-contact .pc-cut::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: linear-gradient(90deg, var(--fsa-autumn) 0%, var(--fsa-line) 46%, rgba(34, 49, 74, 0) 100%);
  transform: rotate(-1.4deg);
  transform-origin: left center;
}

.page-contact .pc-cut::after {
  content: "";
  position: absolute;
  left: 0;
  top: calc(50% - 3px);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--fsa-autumn);
}

/* --- 推进流程 --- */
.page-contact .pc-steps {
  border-top: 1px solid var(--fsa-line);
}

.page-contact .pc-step {
  border-bottom: 1px solid var(--fsa-line);
}

.page-contact .pc-step > summary {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 18px 8px;
  cursor: pointer;
  list-style: none;
  transition: background var(--fsa-t-fast);
}

.page-contact .pc-step > summary::-webkit-details-marker {
  display: none;
}

.page-contact .pc-step > summary:hover {
  background: rgba(47, 211, 233, 0.06);
}

.page-contact .pc-step > summary:focus-visible {
  outline: 2px solid var(--fsa-accent);
  outline-offset: -2px;
}

.page-contact .pc-step__no {
  font-family: var(--fsa-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--fsa-muted);
  transition: color var(--fsa-t-fast);
}

.page-contact .pc-step[open] .pc-step__no {
  color: var(--fsa-accent);
}

.page-contact .pc-step__name {
  font-family: var(--fsa-font-display);
  font-size: clamp(17px, 2.3vw, 24px);
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--fsa-text);
}

.page-contact .pc-step__time {
  font-size: 13px;
  color: var(--fsa-muted);
  white-space: nowrap;
}

.page-contact .pc-step__time::after {
  content: "+";
  display: inline-block;
  margin-left: 12px;
  color: var(--fsa-accent);
  font-family: var(--fsa-font-mono);
  transition: transform var(--fsa-t-fast);
}

.page-contact .pc-step[open] .pc-step__time::after {
  content: "−";
}

.page-contact .pc-step__body {
  padding: 0 8px 22px 60px;
}

.page-contact .pc-step__body .fsa-text {
  margin: 0;
  font-size: 15px;
  max-width: 60ch;
}

@media (max-width: 560px) {
  .page-contact .pc-step > summary {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 12px;
  }

  .page-contact .pc-step__time {
    grid-column: 2;
    white-space: normal;
  }

  .page-contact .pc-step__body {
    padding-left: 46px;
  }
}

/* --- 邮件写法 --- */
.page-contact .pc-email {
  display: grid;
  gap: 22px;
  margin-bottom: 24px;
}

@media (min-width: 820px) {
  .page-contact .pc-email {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 34px;
    align-items: center;
  }
}

.page-contact .pc-email__copy .fsa-text {
  margin: 0 0 16px;
  font-size: 15px;
}

.page-contact .pc-subjects {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .pc-subjects li {
  font-family: var(--fsa-font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--fsa-text);
  background: rgba(47, 211, 233, 0.1);
  border: 1px solid rgba(47, 211, 233, 0.4);
  border-radius: 999px;
  padding: 8px 14px;
}

.page-contact .pc-email__fig {
  aspect-ratio: 900 / 560;
  margin: 0;
  border-radius: var(--fsa-r);
  overflow: hidden;
  border: 1px solid var(--fsa-line);
}

.page-contact .pc-email__fig img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-contact .pc-attach {
  display: grid;
  gap: 1px;
  background: var(--fsa-line);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  overflow: hidden;
}

@media (min-width: 720px) {
  .page-contact .pc-attach {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .pc-attach__col {
  background: var(--fsa-panel);
  padding: 22px 20px;
}

.page-contact .pc-attach__col .fsa-h3 {
  margin: 0 0 14px;
  font-size: 17px;
}

/* --- 联系渠道 --- */
.page-contact .pc-channels {
  display: grid;
  gap: 1px;
  background: var(--fsa-line);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-contact .pc-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .pc-channel {
  background: var(--fsa-panel);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  position: relative;
}

.page-contact .pc-channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: var(--fsa-accent);
  opacity: 0.7;
}

.page-contact .pc-channel__k {
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fsa-muted);
}

.page-contact .pc-channel__v {
  font-family: var(--fsa-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 15px;
  line-height: 1.55;
  color: var(--fsa-text);
  overflow-wrap: anywhere;
}

.page-contact .pc-channel__n {
  font-size: 13px;
  line-height: 1.6;
  color: var(--fsa-muted);
}

.page-contact .pc-channels__note {
  margin: 18px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--fsa-autumn);
  background: rgba(245, 165, 36, 0.07);
  border-radius: 0 var(--fsa-r-sm) var(--fsa-r-sm) 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fsa-muted);
}

/* --- 延伸入口 --- */
.page-contact .pc-next__grid {
  display: grid;
  gap: 12px;
}

@media (min-width: 620px) {
  .page-contact .pc-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .pc-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .pc-next__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  background: var(--fsa-panel);
  border: 1px solid var(--fsa-line);
  border-radius: var(--fsa-r);
  text-decoration: none;
  transition: transform var(--fsa-t-fast), border-color var(--fsa-t-fast);
}

.page-contact .pc-next__item:hover,
.page-contact .pc-next__item:focus-visible {
  transform: translateY(-2px);
  border-color: var(--fsa-accent);
  outline: none;
}

.page-contact .pc-next__k {
  font-family: var(--fsa-font-display);
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--fsa-text);
}

.page-contact .pc-next__d {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fsa-muted);
}

/* --- 窄屏兜底 --- */
@media (max-width: 480px) {
  .page-contact .pc-hero__stats {
    grid-template-columns: 1fr;
  }

  .page-contact .pc-record__bars li {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "lbl val"
      "bar bar";
    row-gap: 8px;
  }

  .page-contact .pc-record__lbl {
    grid-area: lbl;
  }

  .page-contact .pc-record__val {
    grid-area: val;
  }

  .page-contact .pc-bar {
    grid-area: bar;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-dir,
  .page-contact .pc-next__item,
  .page-contact .pc-rail__nav a,
  .page-contact .pc-dir__more,
  .page-contact .pc-step > summary {
    transition: none;
  }
}
</PAGE_CSS>>>