.page-contact {
  background:
    radial-gradient(90% 62% at 86% -6%, rgba(44, 123, 229, 0.16), transparent 62%),
    var(--night);
  color: var(--white);
  overflow-x: clip;
  padding-bottom: clamp(40px, 8vw, 96px);
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: baseline;
  padding-top: 14px;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--white);
}

/* ---------- 首屏：轨道 + 正文 + 档案卡 ---------- */

.page-contact .contact-hero {
  padding-top: clamp(18px, 4vw, 34px);
}

.page-contact .contact-deck {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-contact .contact-deck__rail {
  min-width: 0;
}

.page-contact .rail__title {
  margin: 0 0 10px;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .contact-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-contact .contact-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-body);
  font-size: var(--step-14);
  line-height: 1.2;
  cursor: pointer;
  transition: border-color 120ms linear, background-color 120ms linear, color 120ms linear;
}

.page-contact .contact-tab__num {
  font-family: var(--font-mono);
  font-size: var(--step-12);
  letter-spacing: 0.04em;
  color: var(--yellow);
}

.page-contact .contact-tab:hover,
.page-contact .contact-tab:focus-visible {
  border-color: var(--blue);
  outline: none;
}

.page-contact .contact-tab[aria-pressed="true"] {
  background: var(--night-2);
  border-color: var(--blue);
}

.page-contact .contact-deck__body {
  min-width: 0;
}

.page-contact .eyebrow {
  margin: 0;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .contact-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 8.4vw, 64px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-title strong {
  display: block;
  font-weight: 800;
  color: var(--white);
}

.page-contact .contact-lede {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: var(--step-17);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .contact-needs {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-need {
  min-width: 0;
  padding: 18px 18px 16px;
  background: rgba(20, 27, 77, 0.62);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius);
}

.page-contact .contact-need:nth-of-type(1) {
  border-left-color: var(--red);
}

.page-contact .contact-need:nth-of-type(2) {
  border-left-color: var(--yellow);
}

.page-contact .contact-need:nth-of-type(3) {
  border-left-color: var(--blue);
}

.page-contact .contact-need__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--step-22);
  font-weight: 800;
  line-height: 1.25;
  color: var(--white);
}

.page-contact .contact-need__text {
  margin: 0;
  font-size: var(--step-17);
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.86);
}

.page-contact .contact-need__route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: var(--step-14);
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-need__route .tag {
  flex: 0 0 auto;
}

/* 暖纸档案卡 */

.page-contact .contact-slab {
  min-width: 0;
  align-self: start;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .slab-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .slab-body {
  padding: 22px 20px 24px;
}

.page-contact .slab-kicker {
  margin: 0;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: #6F6650;
}

.page-contact .slab-title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: var(--step-22);
  font-weight: 800;
  color: var(--paper-ink);
}

.page-contact .slab-mail {
  margin: 10px 0 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--paper-line);
  font-family: var(--font-mono);
  font-size: clamp(13px, 3.4vw, 17px);
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
  color: var(--paper-ink);
}

.page-contact .slab-hours {
  margin: 10px 0 0;
  font-size: var(--step-14);
  letter-spacing: 0.04em;
  color: #4B4433;
}

.page-contact .slab-list {
  margin: 16px 0 0;
  display: grid;
  gap: 12px;
}

.page-contact .slab-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-contact .slab-row dt {
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: #6F6650;
}

.page-contact .slab-row dd {
  margin: 0;
  font-size: var(--step-17);
  line-height: 1.55;
  color: var(--paper-ink);
}

.page-contact .slab-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.page-contact .slab-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--paper-line);
  font-size: var(--step-14);
  line-height: 1.7;
  color: #4B4433;
}

/* ---------- 流程轨道 ---------- */

.page-contact .contact-flow {
  padding-top: clamp(44px, 8vw, 88px);
}

.page-contact .flow-head {
  display: grid;
  gap: 8px;
}

.page-contact .flow-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 34px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .flow-track {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .flow-step {
  min-width: 0;
  padding: 20px 0 22px;
  border-top: 1px solid var(--line);
}

.page-contact .flow-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-22);
  letter-spacing: 0.02em;
  color: var(--yellow);
}

.page-contact .flow-step__title {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-size: var(--step-17);
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 合作 ---------- */

.page-contact .contact-coop {
  padding-top: clamp(44px, 8vw, 88px);
}

.page-contact .coop-media {
  margin: 0 0 clamp(24px, 4vw, 40px);
}

.page-contact .coop-media .media__frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-contact .media__caption {
  margin-top: 10px;
  font-size: var(--step-12);
  letter-spacing: 0.06em;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

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

.page-contact .coop-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 5.4vw, 40px);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-contact .coop-lede {
  margin: 14px 0 0;
  max-width: 42ch;
  font-size: var(--step-17);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .field-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .field-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .field-item__key {
  font-family: var(--font-mono);
  font-size: var(--step-14);
  letter-spacing: 0.04em;
  color: var(--yellow);
  padding-top: 2px;
}

.page-contact .field-item__body {
  min-width: 0;
}

.page-contact .field-item__title {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-size: var(--step-17);
  font-weight: 800;
  color: var(--white);
}

.page-contact .field-item__text {
  margin: 0;
  font-size: var(--step-14);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .coop-aside {
  min-width: 0;
  align-self: start;
  padding: 22px 20px 24px;
  background: var(--paper);
  color: var(--paper-ink);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  border-top: 3px solid var(--red);
}

.page-contact .coop-aside__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: var(--step-22);
  font-weight: 800;
  color: var(--paper-ink);
}

.page-contact .coop-aside__text {
  margin: 0 0 12px;
  font-size: var(--step-14);
  line-height: 1.75;
  color: #3B3527;
}

.page-contact .coop-aside__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--paper-line);
  font-size: var(--step-14);
  line-height: 1.7;
  color: #4B4433;
}

.page-contact .coop-aside__label {
  display: block;
  margin-bottom: 4px;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: #6F6650;
}

.page-contact .partner-strip {
  margin-top: clamp(28px, 5vw, 48px);
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-contact .partner-strip__title {
  margin: 0 0 12px;
  font-size: var(--step-12);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .partner-strip__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-contact .partner-strip__list li {
  position: relative;
  font-family: var(--font-display);
  font-size: var(--step-17);
  font-weight: 300;
  letter-spacing: 0.02em;
  color: var(--white);
}

.page-contact .partner-strip__list li + li::before {
  content: "/";
  position: absolute;
  left: -14px;
  color: var(--line);
}

.page-contact .partner-strip__note {
  margin: 14px 0 0;
  font-size: var(--step-12);
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 常见问题前置 ---------- */

.page-contact .contact-pre {
  padding-top: clamp(44px, 8vw, 88px);
}

.page-contact .pre-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .pre-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  background: rgba(20, 27, 77, 0.45);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--white);
  transition: border-color 120ms linear, background-color 120ms linear;
}

.page-contact .pre-link:hover,
.page-contact .pre-link:focus-visible {
  border-color: var(--blue);
  background: rgba(20, 27, 77, 0.85);
  outline: none;
}

.page-contact .pre-link__text {
  min-width: 0;
  font-size: var(--step-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .pre-link__text strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-display);
  font-size: var(--step-17);
  font-weight: 800;
  color: var(--white);
}

.page-contact .pre-link__arrow {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: var(--step-17);
  color: var(--blue);
}

.page-contact .contact-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: baseline;
  margin-top: clamp(36px, 6vw, 64px);
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: var(--step-12);
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .contact-legal a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-contact .contact-legal a:hover,
.page-contact .contact-legal a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--blue);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .contact-deck {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 30px;
  }

  .page-contact .contact-deck__rail {
    grid-column: 1 / -1;
  }

  .page-contact .contact-lede {
    max-width: 52ch;
  }

  .page-contact .flow-track {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 30px;
    border-bottom: none;
  }

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

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

  .page-contact .pre-list > li:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .page-contact .contact-deck {
    grid-template-columns: 210px minmax(0, 1fr) 370px;
    gap: 40px;
  }

  .page-contact .contact-deck__rail {
    grid-column: auto;
  }

  .page-contact .contact-tabs {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-contact .contact-tab {
    width: 100%;
    justify-content: flex-start;
    padding: 13px 14px;
  }

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

  .page-contact .flow-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 28px;
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    gap: 48px;
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-tab,
  .page-contact .pre-link {
    transition: none;
  }
}
<<<END>>>