.page-contact {
  --contact-maxw: 1180px;
  --contact-node: 44px;
  --contact-gutter: 20px;
  --contact-glow: 0 22px 60px rgba(5, 13, 28, .55);
  position: relative;
  overflow-x: clip;
  color: var(--mist);
  background:
    radial-gradient(900px 520px at 92% -12%, rgba(59, 201, 255, .17), transparent 60%),
    radial-gradient(760px 480px at -12% 26%, rgba(255, 106, 43, .13), transparent 62%),
    radial-gradient(700px 420px at 50% 108%, rgba(124, 108, 255, .12), transparent 66%),
    var(--navy-900);
}

.page-contact .shell {
  width: 100%;
  max-width: var(--contact-maxw);
  margin: 0 auto;
  padding-left: var(--shell-pad);
  padding-right: var(--shell-pad);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 6px 0 44px;
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: 68%;
  height: 138%;
  background: linear-gradient(150deg, rgba(255, 106, 43, .18), rgba(255, 106, 43, 0) 62%);
  clip-path: polygon(30% 0, 100% 0, 70% 100%, 0 100%);
  transform: rotate(-12deg);
  border-radius: 80px;
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero__waves {
  position: absolute;
  top: -8%;
  left: 16%;
  width: 92%;
  height: 132%;
  pointer-events: none;
  z-index: 0;
  opacity: .85;
}

.page-contact .contact-hero__waves path {
  fill: none;
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.page-contact .contact-hero__waves path:nth-child(1) { stroke: rgba(59, 201, 255, .5); }
.page-contact .contact-hero__waves path:nth-child(2) { stroke: rgba(53, 227, 178, .36); }
.page-contact .contact-hero__waves path:nth-child(3) { stroke: rgba(124, 108, 255, .3); }

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .contact-hero__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: clamp(28px, 7.2vw, 42px);
  line-height: 1.16;
  color: var(--mist);
}

.page-contact .contact-hero__lede {
  margin: 0 0 24px;
  max-width: 640px;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--gray);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-hero__figure {
  margin: 0;
}

/* ---------- 三张联系卡 ---------- */
.page-contact .contact-cards {
  position: relative;
  padding: 4px 0 50px;
}

.page-contact .contact-cards__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .contact-card {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 22px 22px 22px 28px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(18, 37, 63, .96), rgba(10, 23, 48, .96));
  box-shadow: var(--contact-glow);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 4px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--mint), rgba(53, 227, 178, .12));
}

.page-contact .contact-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.page-contact .contact-card__label {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.4;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .contact-card__value--addr {
  font-size: var(--fs-16);
  line-height: 1.6;
}

.page-contact .contact-card__meta {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--gray);
}

.page-contact .contact-card .copy-chip {
  justify-self: start;
}

/* ---------- 章节通用 ---------- */
.page-contact .divider-dash {
  border: 0;
  border-top: 1px dashed var(--dash-amber);
  max-width: var(--contact-maxw);
  margin: 0 auto;
  opacity: .6;
}

.page-contact .contact-section {
  position: relative;
  padding: 44px 0;
}

.page-contact .contact-narrow {
  max-width: 720px;
}

.page-contact .contact-section__tag {
  margin: 0 0 14px;
}

.page-contact .section__head {
  margin: 0 0 26px;
  max-width: 740px;
}

.page-contact .section__num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: .2em;
  color: var(--orange);
}

.page-contact .section__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: clamp(23px, 5.6vw, 36px);
  line-height: 1.22;
  color: var(--mist);
}

.page-contact .section__lede {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: 14px;
}

.page-contact .coop-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(18, 37, 63, .7);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .coop-card[open] {
  border-color: rgba(124, 108, 255, .55);
  background: rgba(18, 37, 63, .98);
}

.page-contact .coop-card .panel__summary {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  padding: 22px;
  list-style: none;
  cursor: pointer;
}

.page-contact .coop-card .panel__summary::-webkit-details-marker {
  display: none;
}

.page-contact .coop-card .panel__summary::marker {
  content: "";
}

.page-contact .coop-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.38;
  color: var(--mist);
}

.page-contact .coop-card__hint {
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--gray);
}

.page-contact .coop-card .panel__body {
  padding: 16px 22px 22px;
  border-top: 1px dashed var(--line);
}

.page-contact .coop-card .panel__body p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 01 洽谈流程 ---------- */
.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .flow__step {
  position: relative;
  display: grid;
  grid-template-columns: var(--contact-node) minmax(0, 1fr);
  column-gap: 16px;
  row-gap: 6px;
  align-items: start;
  padding: 18px var(--contact-gutter);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(18, 37, 63, .58);
}

.page-contact .flow__num {
  grid-row: 1 / 3;
  display: grid;
  place-items: center;
  width: var(--contact-node);
  height: var(--contact-node);
  border: 1px dashed var(--dash-amber);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  color: var(--amber);
}

.page-contact .flow__step::after {
  content: "";
  position: absolute;
  left: calc(var(--contact-gutter) + var(--contact-node) / 2);
  top: calc(18px + var(--contact-node) + 8px);
  bottom: -19px;
  width: 0;
  border-left: 1px dashed var(--dash-amber);
  opacity: .55;
}

.page-contact .flow__step:last-child::after {
  display: none;
}

.page-contact .flow__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.4;
  color: var(--mist);
}

.page-contact .flow__text {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.72;
  color: var(--gray);
}

/* ---------- 02 反馈通道 ---------- */
.page-contact .feedback-grid {
  display: grid;
  gap: 28px;
}

.page-contact .feedback-note {
  margin: 0 0 18px;
  font-size: var(--fs-14);
  line-height: 1.78;
}

.page-contact .feedback-link {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-color: rgba(59, 201, 255, .45);
  text-underline-offset: 3px;
}

.page-contact .feedback-link:hover {
  color: var(--mint);
}

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

.page-contact .fb-tpl {
  margin: 0 0 22px;
  padding: 18px 20px 20px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--r-md);
  background: rgba(5, 13, 28, .6);
}

.page-contact .fb-tpl__label {
  margin: 0 0 14px;
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--mint);
}

.page-contact .fb-tpl__lines {
  display: grid;
  gap: 9px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--gray);
}

.page-contact .fb-tpl__lines span {
  display: block;
  word-break: break-word;
}

/* ---------- 03 / 04 联系细节 ---------- */
.page-contact .contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .contact-line:last-of-type {
  border-bottom: 0;
}

.page-contact .contact-line__value {
  flex: 1 1 240px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--mist);
  word-break: break-word;
}

.page-contact .contact-line__value--addr {
  font-family: var(--font-body);
  font-size: var(--fs-16);
}

.page-contact .contact-line__meta {
  margin: 10px 0 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--gray);
}

/* ---------- 05 本地协作 ---------- */
.page-contact .local-band {
  position: relative;
  overflow: hidden;
  padding: 30px 22px 34px;
  border: 1px solid rgba(59, 201, 255, .22);
  border-radius: var(--r-xl);
  background:
    radial-gradient(560px 320px at 84% 6%, rgba(59, 201, 255, .16), transparent 66%),
    linear-gradient(160deg, rgba(18, 37, 63, .95), rgba(10, 23, 48, .95));
}

.page-contact .local-band__wave {
  position: absolute;
  left: 0;
  bottom: -8%;
  width: 100%;
  height: 68%;
  opacity: .55;
  pointer-events: none;
}

.page-contact .local-band__wave path {
  fill: none;
  stroke-width: 1.4;
  vector-effect: non-scaling-stroke;
}

.page-contact .local-band__wave path:nth-child(1) { stroke: rgba(53, 227, 178, .5); }
.page-contact .local-band__wave path:nth-child(2) { stroke: rgba(59, 201, 255, .4); }
.page-contact .local-band__wave path:nth-child(3) { stroke: rgba(255, 194, 75, .3); }

.page-contact .local-band .section__head,
.page-contact .local-list {
  position: relative;
  z-index: 1;
}

.page-contact .local-band .section__head {
  max-width: 680px;
}

.page-contact .local-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .local-item {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(5, 13, 28, .52);
}

.page-contact .local-item__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-16);
  line-height: 1.45;
  color: var(--mist);
}

.page-contact .local-item__text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--gray);
}

/* ---------- 收尾入口 ---------- */
.page-contact .contact-cta {
  padding: 40px 0 76px;
}

.page-contact .contact-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  font-size: clamp(22px, 5vw, 32px);
  line-height: 1.25;
  color: var(--mist);
}

.page-contact .contact-cta__lede {
  margin: 0 0 24px;
  font-size: var(--fs-16);
  line-height: 1.72;
  color: var(--gray);
}

.page-contact .contact-cta__grid {
  display: grid;
  gap: 14px;
}

.page-contact .cta-link {
  display: grid;
  gap: 8px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(18, 37, 63, .7);
  color: inherit;
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .cta-link:hover,
.page-contact .cta-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(255, 106, 43, .6);
  background: rgba(18, 37, 63, 1);
}

.page-contact .cta-link__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-20);
  line-height: 1.4;
  color: var(--mist);
}

.page-contact .cta-link__text {
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--gray);
}

.page-contact .cta-link__path {
  font-size: var(--fs-12);
  letter-spacing: .06em;
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact {
    --contact-node: 52px;
    --contact-gutter: 26px;
  }

  .page-contact .flow__step {
    padding: 22px var(--contact-gutter);
    column-gap: 20px;
  }

  .page-contact .flow__step::after {
    top: calc(22px + var(--contact-node) + 10px);
    bottom: -21px;
  }

  .page-contact .flow__num {
    font-size: var(--fs-20);
  }

  .page-contact .contact-section {
    padding: 56px 0;
  }
}

@media (min-width: 760px) {
  .page-contact .coop-grid,
  .page-contact .local-list,
  .page-contact .contact-cta__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-cards__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: 22px;
  }

  .page-contact .contact-card:nth-child(1) { margin-top: 0; }
  .page-contact .contact-card:nth-child(2) { margin-top: 46px; }
  .page-contact .contact-card:nth-child(3) { margin-top: 20px; }
}

@media (min-width: 1000px) {
  .page-contact .contact-hero {
    padding: 12px 0 62px;
  }

  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.03fr) minmax(0, .97fr);
    gap: 50px;
  }

  .page-contact .contact-hero__figure {
    margin-top: 0;
  }

  .page-contact .contact-cards {
    padding-bottom: 64px;
  }
}

@media (min-width: 960px) {
  .page-contact .feedback-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: 46px;
  }

  .page-contact .feedback-figure {
    margin-top: 36px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-section {
    padding: 64px 0;
  }

  .page-contact .contact-cta {
    padding-bottom: 96px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .cta-link,
  .page-contact .coop-card {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .cta-link:hover,
  .page-contact .cta-link:focus-visible {
    transform: none;
  }
}