.page-contact {
  background: var(--bg);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 54px) 0 clamp(34px, 6vw, 66px);
  background:
    radial-gradient(120% 95% at 86% 0%, rgba(23, 224, 210, 0.16), transparent 58%),
    radial-gradient(90% 80% at 6% 100%, rgba(255, 91, 46, 0.08), transparent 62%),
    linear-gradient(180deg, var(--c-deep), var(--c-ink));
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(23, 224, 210, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 224, 210, 0.055) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(100deg, transparent 0%, #000 46%, #000 100%);
  mask-image: linear-gradient(100deg, transparent 0%, #000 46%, #000 100%);
  pointer-events: none;
}

.page-contact .contact-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-contact .hero-copy {
  min-width: 0;
}

.page-contact .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 6.4vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  color: #fff;
}

.page-contact .hero-lede {
  margin-top: 16px;
  max-width: 34em;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.78;
  color: var(--text-dim);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .hero-facts {
  list-style: none;
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-contact .hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: rgba(20, 48, 79, 0.55);
  font-size: 13px;
  color: var(--text-dim);
}

.page-contact .hero-facts__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .hero-figure {
  margin: 0;
}

/* ---------- 通用分节 ---------- */
.page-contact .section {
  padding: clamp(40px, 6vw, 76px) 0;
}

.page-contact .section__intro {
  max-width: 46em;
}

.page-contact .inline-link {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(23, 224, 210, 0.4);
  padding-bottom: 1px;
  transition: border-color 180ms ease-out, color 180ms ease-out;
}

.page-contact .inline-link:hover,
.page-contact .inline-link:focus-visible {
  color: var(--c-cyan-soft);
  border-bottom-color: var(--c-cyan-soft);
}

/* ---------- 联系通道 ---------- */
.page-contact .channel-list {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3.4vw, 40px);
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-contact .channel-row {
  display: grid;
  gap: 12px;
  padding: 22px 18px;
  background: var(--bg-raised);
  border-left: 2px solid transparent;
  transition: border-color 200ms ease-out, background-color 200ms ease-out;
}

.page-contact .channel-row:hover,
.page-contact .channel-row:focus-within {
  border-left-color: var(--c-cyan);
  background: linear-gradient(90deg, rgba(23, 224, 210, 0.07), rgba(20, 48, 79, 0.9) 42%);
}

.page-contact .channel-row__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .channel-row__label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.01em;
  margin: 0;
  color: #fff;
}

.page-contact .channel-row__value {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-cyan-soft);
  margin: 6px 0 0;
  word-break: break-all;
}

.page-contact .channel-row__meta {
  margin: 6px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--c-clay);
}

.page-contact .channel-row__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 合作方向 ---------- */
.page-contact .coop {
  background: linear-gradient(180deg, rgba(20, 48, 79, 0.72), var(--bg) 72%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .coop-grid {
  margin-top: clamp(24px, 3.4vw, 42px);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-contact .coop-visual {
  min-width: 0;
}

.page-contact .coop-visual .media-frame {
  margin: 0;
}

.page-contact .coop-cards {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-contact .coop-card {
  position: relative;
  padding: 22px 20px 22px 24px;
  background: var(--bg-raised);
  border: 1px solid var(--line-soft);
  border-left: 2px solid rgba(23, 224, 210, 0.55);
  transition: border-color 200ms ease-out, transform 220ms ease-out;
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  border-color: var(--line-strong);
  border-left-color: var(--c-orange);
  transform: translateX(2px);
}

.page-contact .coop-card__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-amber);
  margin: 0;
}

.page-contact .coop-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 25px);
  letter-spacing: -0.01em;
  color: #fff;
  margin: 8px 0 0;
}

.page-contact .coop-card__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .coop-card__more {
  font-size: 14px;
  line-height: 1.74;
  color: var(--text-dim);
}

.page-contact .coop-card__more p {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
}

/* ---------- 问题反馈 ---------- */
.page-contact .feedback-grid {
  gap: clamp(24px, 3.4vw, 42px);
  align-items: start;
}

.page-contact .feedback-copy {
  min-width: 0;
}

.page-contact .feedback-lede {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-contact .feedback-note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--c-moss);
  font-size: 14px;
  color: var(--text-dim);
}

.page-contact .fb-list {
  min-width: 0;
  display: grid;
  gap: 10px;
}

.page-contact .fb-item {
  background: rgba(20, 48, 79, 0.6);
  border: 1px solid var(--line-soft);
  transition: border-color 200ms ease-out;
}

.page-contact .fb-item:hover {
  border-color: var(--line-strong);
}

.page-contact .fb-item > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: #fff;
}

.page-contact .fb-item > summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-item > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--c-cyan);
}

.page-contact .fb-item[open] > summary::after {
  content: "–";
  color: var(--c-orange);
}

.page-contact .fb-item[open] > summary {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .fb-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .fb-points {
  margin: 0;
  padding: 16px 16px 18px 34px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .fb-points li + li {
  margin-top: 8px;
}

.page-contact .fb-points li::marker {
  color: var(--c-cyan);
}

/* ---------- 响应时段 ---------- */
.page-contact .hours {
  background: rgba(20, 48, 79, 0.42);
  border-top: 1px solid var(--line-soft);
}

.page-contact .hours-board {
  margin-top: clamp(24px, 3.4vw, 40px);
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
}

.page-contact .hours-track {
  position: relative;
  height: 38px;
  border: 1px solid var(--line-soft);
  background: repeating-linear-gradient(90deg, rgba(110, 122, 132, 0.16) 0 1px, transparent 1px 4.166%);
}

.page-contact .hours-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  right: 8.333%;
  background: linear-gradient(90deg, rgba(23, 224, 210, 0.42), rgba(23, 224, 210, 0.14));
  border-left: 2px solid var(--c-cyan);
  border-right: 2px solid var(--c-cyan);
}

.page-contact .hours-scale {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-rock);
  font-variant-numeric: tabular-nums;
}

.page-contact .hours-caption {
  margin: 10px 0 0;
  font-size: 13px;
  color: var(--c-clay);
}

.page-contact .hours-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-contact .hours-steps li {
  display: grid;
  gap: 8px;
  padding: 16px 16px;
  background: var(--bg);
}

.page-contact .hours-steps p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .hours-steps__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-amber);
  font-variant-numeric: tabular-nums;
}

/* ---------- 办公信息 ---------- */
.page-contact .visit {
  border-top: 1px solid var(--line-soft);
}

.page-contact .visit-grid {
  gap: clamp(24px, 3.4vw, 42px);
  align-items: start;
}

.page-contact .visit-copy {
  min-width: 0;
}

.page-contact .visit-lede {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-dim);
}

.page-contact .visit-note {
  margin-top: 18px;
  padding-left: 14px;
  border-left: 2px solid var(--c-cyan);
  font-size: 14px;
  color: var(--text-dim);
}

.page-contact .legend-grid {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-contact .legend-cell {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--bg-raised);
}

.page-contact .legend-cell::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  width: 10px;
  height: 1px;
  background: var(--c-cyan);
}

.page-contact .legend-cell__key {
  margin: 0;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-contact .legend-cell__val {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
  word-break: break-word;
}

/* ---------- 备案条纹 ---------- */
.page-contact .colophon {
  padding: clamp(28px, 4vw, 44px) 0 clamp(34px, 5vw, 54px);
  background: var(--c-ink);
  border-top: 1px solid var(--line-soft);
}

.page-contact .colophon__grid {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-contact .colophon__cell {
  padding: 16px 18px;
  background: var(--c-ink);
}

.page-contact .colophon__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-rock);
}

.page-contact .colophon__val {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 768px) {
  .page-contact .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel-row {
    grid-template-columns: 68px minmax(0, 0.95fr) minmax(0, 1.25fr);
    align-items: start;
    gap: 18px;
    padding: 26px 24px;
  }

  .page-contact .channel-row__num {
    font-size: 32px;
  }

  .page-contact .hours-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (min-width: 960px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-contact .coop-cards {
    gap: 16px;
  }

  .page-contact .coop-card:nth-child(2) {
    padding-top: 30px;
    padding-bottom: 30px;
  }

  .page-contact .coop-card:nth-child(3) {
    padding-top: 26px;
    padding-bottom: 26px;
  }
}

/* 桌面端合作卡片细节在悬停与聚焦时展开；窄屏保持全文可见 */
@media (hover: hover) and (min-width: 960px) {
  .page-contact .coop-card__more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 320ms ease-out, opacity 240ms ease-out;
  }

  .page-contact .coop-card:hover .coop-card__more,
  .page-contact .coop-card:focus-within .coop-card__more {
    max-height: 260px;
    opacity: 1;
  }
}

@media (min-width: 1200px) {
  .page-contact .hours-board {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-row,
  .page-contact .coop-card,
  .page-contact .coop-card__more,
  .page-contact .inline-link,
  .page-contact .fb-item {
    transition: none;
  }

  .page-contact .coop-card:hover,
  .page-contact .coop-card:focus-within {
    transform: none;
  }
}
<<<END>>>