.page-contact {
  --coop-rail-w: 300px;
  --coop-slash: 6deg;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  padding: 20px 0 0;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--haze);
}
.page-contact .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .breadcrumb-list li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(143, 163, 191, 0.5);
}
.page-contact .breadcrumb-list a {
  color: var(--haze);
  text-decoration: none;
  transition: color 200ms var(--ease);
}
.page-contact .breadcrumb-list a:hover,
.page-contact .breadcrumb-list a:focus-visible {
  color: var(--cyan);
}
.page-contact .breadcrumb-list [aria-current="page"] {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-contact .coop-hero {
  position: relative;
  padding: 30px 0 62px;
  overflow: hidden;
}
.page-contact .coop-hero::before {
  content: "";
  position: absolute;
  top: -8%;
  left: -6%;
  right: -6%;
  height: 76%;
  background:
    repeating-linear-gradient(118deg, rgba(53, 229, 208, 0.07) 0 1px, transparent 1px 44px),
    radial-gradient(120% 90% at 78% 8%, rgba(255, 106, 31, 0.18), transparent 62%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 0 100%);
  pointer-events: none;
}
.page-contact .coop-hero__grid {
  position: relative;
  display: grid;
  gap: 34px;
  margin-top: 24px;
}
.page-contact .coop-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(53, 229, 208, 0.06);
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.12em;
}
.page-contact .coop-hero__kicker::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  animation: coopPulse 2.4s ease-in-out infinite;
}
@keyframes coopPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.3; transform: scale(0.65); }
}
.page-contact .coop-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(30px, 7.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}
.page-contact .coop-hero__lead {
  max-width: 58ch;
  margin: 0 0 26px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}
.page-contact .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 30px;
}
.page-contact .coop-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}
.page-contact .coop-hero__stats li {
  display: grid;
  gap: 5px;
}
.page-contact .coop-hero__stats .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(19px, 4.6vw, 27px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--orange);
}
.page-contact .coop-hero__stats .meta {
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--haze);
}
.page-contact .coop-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--night-blue);
  box-shadow: var(--shadow);
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 100%);
}
.page-contact .coop-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .coop-hero__media-tag {
  position: absolute;
  left: 14px;
  bottom: 14px;
  margin: 0;
  padding: 7px 13px;
  border-left: 3px solid var(--orange);
  background: rgba(6, 14, 28, 0.82);
  color: var(--text);
  font-size: 12px;
  letter-spacing: 0.05em;
  backdrop-filter: blur(6px);
}

/* ---------- 分栏结构 ---------- */
.page-contact .coop-layout {
  display: grid;
  gap: 34px;
}
.page-contact .coop-body {
  display: grid;
  gap: 52px;
}

/* ---------- 左侧常驻信息栏 ---------- */
.page-contact .coop-rail__panel {
  padding: 22px 20px;
  border: 1px solid rgba(255, 106, 31, 0.42);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(10px);
}
.page-contact .coop-rail__eyebrow {
  margin: 0 0 18px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}
.page-contact .coop-rail__list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .coop-rail__item {
  display: grid;
  gap: 5px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}
.page-contact .coop-rail__item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}
.page-contact .coop-rail__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--haze);
}
.page-contact .coop-rail__value {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-strong);
  word-break: break-all;
}
.page-contact .coop-rail__note {
  margin: 18px 0 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--haze);
}
.page-contact .coop-rail__jump {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}
.page-contact .coop-rail__jump:hover,
.page-contact .coop-rail__jump:focus-visible {
  color: var(--orange);
  border-bottom-color: rgba(255, 106, 31, 0.6);
}

/* ---------- 章节标题 ---------- */
.page-contact .coop-section {
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-contact .coop-head {
  margin-bottom: 26px;
}
.page-contact .coop-head__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--haze);
}
.page-contact .coop-head__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--orange);
  padding-right: 12px;
  border-right: 1px solid rgba(255, 106, 31, 0.45);
}
.page-contact .coop-head__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 4.6vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}
.page-contact .coop-head__lead {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 三张方向卡 ---------- */
.page-contact .coop-tracks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(228px, 1fr));
  gap: 16px;
}
.page-contact .coop-track {
  position: relative;
  padding: 24px 20px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--red-orange);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(11, 27, 51, 0.96), rgba(6, 14, 28, 0.98));
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.page-contact .coop-track:nth-child(2) {
  border-left-color: var(--cyan);
}
.page-contact .coop-track:nth-child(3) {
  border-left-color: var(--gold);
}
.page-contact .coop-track:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 106, 31, 0.4);
}
.page-contact .coop-track__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}
.page-contact .coop-track__suit {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--cyan);
}
.page-contact .coop-track__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
}
.page-contact .coop-track__link {
  display: inline-block;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 31, 0.45);
}
.page-contact .coop-track__link:hover,
.page-contact .coop-track__link:focus-visible {
  color: var(--gold);
  border-bottom-color: rgba(242, 180, 65, 0.7);
}

/* ---------- 细节章节 ---------- */
.page-contact .coop-detail {
  display: grid;
  gap: 22px;
  padding: 30px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-contact .coop-detail__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(46px, 11vw, 82px);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: rgba(53, 229, 208, 0.16);
  -webkit-text-stroke: 1px rgba(53, 229, 208, 0.55);
}
.page-contact .coop-detail__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.6vw, 28px);
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--text-strong);
}
.page-contact .coop-detail__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--haze);
}
.page-contact .coop-detail__body {
  display: grid;
  gap: 18px;
  align-content: start;
}
.page-contact .coop-detail__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}
.page-contact .coop-detail__foot {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--haze);
}
.page-contact .coop-detail__foot a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 31, 0.45);
}
.page-contact .coop-detail__foot a:hover,
.page-contact .coop-detail__foot a:focus-visible {
  color: var(--gold);
}

.page-contact .coop-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .coop-list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}
.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 13px;
  width: 12px;
  height: 2px;
  background: var(--cyan);
}
.page-contact .coop-list strong {
  color: var(--text-strong);
  font-weight: 700;
}

.page-contact .coop-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .coop-chips li {
  padding: 6px 13px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(53, 229, 208, 0.05);
  color: var(--cyan);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-contact .coop-figure {
  position: relative;
  margin: 6px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--night-blue);
}
.page-contact .coop-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-contact .coop-figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  border-top: 1px solid rgba(255, 106, 31, 0.45);
  background: rgba(6, 14, 28, 0.84);
  color: var(--haze);
  font-size: 12px;
  letter-spacing: 0.05em;
}

/* ---------- 四步流程 ---------- */
.page-contact .coop-flow__rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 16px;
  row-gap: 22px;
  margin: 0 0 28px;
  padding: 0;
  list-style: none;
}
.page-contact .coop-flow__rail::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  right: 0;
  height: 1px;
  display: none;
  background: linear-gradient(90deg, var(--orange), rgba(53, 229, 208, 0.6));
}
.page-contact .coop-flow__rail a {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 11px;
  text-decoration: none;
  color: var(--text);
}
.page-contact .coop-flow__dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--orange);
  background: var(--deep-blue);
  box-shadow: 0 0 0 4px rgba(255, 106, 31, 0.12);
  transition: background 200ms var(--ease);
}
.page-contact .coop-flow__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--haze);
  transition: color 200ms var(--ease);
}
.page-contact .coop-flow__rail a:hover .coop-flow__dot,
.page-contact .coop-flow__rail a:focus-visible .coop-flow__dot {
  background: var(--orange);
}
.page-contact .coop-flow__rail a:hover .coop-flow__label,
.page-contact .coop-flow__rail a:focus-visible .coop-flow__label {
  color: var(--text-strong);
}
.page-contact .coop-flow__details {
  display: grid;
  gap: 14px;
}
.page-contact .coop-flow__item {
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: rgba(11, 27, 51, 0.66);
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: border-color 220ms var(--ease), background 220ms var(--ease);
}
.page-contact .coop-flow__item:target {
  border-color: var(--orange);
  background: rgba(255, 106, 31, 0.08);
}
.page-contact .coop-flow__index {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.page-contact .coop-flow__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--text-strong);
}
.page-contact .coop-flow__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 联系渠道 ---------- */
.page-contact .coop-channels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.page-contact .coop-channel {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 24px 20px;
  border: 1px solid rgba(255, 106, 31, 0.38);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(8px);
}
.page-contact .coop-channel__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}
.page-contact .coop-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.5;
  color: var(--text-strong);
  word-break: break-all;
}
.page-contact .coop-channel__value--text {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  word-break: normal;
}
.page-contact .coop-channel__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--haze);
}
.page-contact .coop-channels__note {
  margin: 22px 0 0;
  padding: 14px 18px;
  border-left: 3px solid var(--cyan);
  background: rgba(53, 229, 208, 0.05);
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}
.page-contact .coop-channels__foot {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--haze);
}
.page-contact .coop-channels__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}
.page-contact .coop-channels__foot a:hover,
.page-contact .coop-channels__foot a:focus-visible {
  color: var(--orange);
  border-bottom-color: rgba(255, 106, 31, 0.6);
}

/* ---------- 焦点态统一 ---------- */
.page-contact a:focus-visible,
.page-contact .coop-track__link:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-contact .coop-flow__rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .coop-flow__rail::before {
    display: block;
  }
  .page-contact .coop-flow__details {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .coop-hero {
    padding: 44px 0 92px;
  }
  .page-contact .coop-hero::before {
    height: 82%;
  }
  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: 48px;
  }
  .page-contact .coop-hero__media {
    clip-path: polygon(0 8%, 100% 0, 100% 100%, 0 100%);
  }
  .page-contact .coop-detail {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.3fr);
    gap: 42px;
    padding: 40px 0;
  }
}

@media (min-width: 1000px) {
  .page-contact .coop-layout {
    grid-template-columns: var(--coop-rail-w) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-contact .coop-rail {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
  .page-contact .coop-body {
    gap: 60px;
  }
}

@media (max-width: 380px) {
  .page-contact .coop-hero__stats .meta {
    font-size: 11px;
  }
  .page-contact .coop-rail__value,
  .page-contact .coop-channel__value {
    font-size: 13px;
  }
}