.page-contact {
  --pt-gap: clamp(18px, 3vw, 32px);
  --pt-pad: clamp(20px, 3.2vw, 34px);
  display: block;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(34px, 7vw, 88px) 0 clamp(30px, 5.6vw, 68px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 96% at 88% -10%, rgba(0, 229, 200, 0.18), transparent 60%),
    radial-gradient(90% 70% at 4% 110%, rgba(255, 107, 69, 0.12), transparent 62%),
    linear-gradient(158deg, #04121F 0%, #0A2136 64%, #071A2B 100%);
}

.page-contact .contact-hero .texture-grid {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.45;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .display-1 {
  margin: clamp(10px, 1.6vw, 18px) 0 0;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.page-contact .contact-hero__lead {
  max-width: 60ch;
  margin-top: clamp(16px, 2.4vw, 26px);
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

/* ---------- 三条联系卡片 ---------- */
.page-contact .contact-channels {
  position: relative;
}

.page-contact .contact-board {
  display: grid;
  gap: var(--pt-gap);
  margin-top: clamp(26px, 4vw, 46px);
}

.page-contact .contact-card {
  position: relative;
  padding: var(--pt-pad);
  padding-top: calc(var(--pt-pad) + 6px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(10, 33, 54, 0.96), rgba(7, 26, 43, 0.99));
  box-shadow: var(--shadow-card);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--pt-pad);
  width: 52px;
  height: 3px;
  background: var(--cyan);
  box-shadow: 0 0 18px rgba(0, 229, 200, 0.7);
}

.page-contact .contact-card--phone::before { background: var(--coral); box-shadow: 0 0 18px rgba(255, 107, 69, 0.65); }
.page-contact .contact-card--coop::before { background: var(--amber); box-shadow: 0 0 18px rgba(255, 194, 75, 0.6); }

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  transform: translateY(-4px);
  border-color: rgba(0, 229, 200, 0.55);
  box-shadow: var(--glow-cyan);
}

.page-contact .contact-card__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .contact-card__value {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.1vw, 21px);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-card--mail .contact-card__value { color: var(--cyan); }
.page-contact .contact-card--phone .contact-card__value { color: var(--coral); }
.page-contact .contact-card--coop .contact-card__value {
  font-size: clamp(15px, 1.9vw, 18px);
  color: var(--amber);
}

.page-contact .contact-card__note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .contact-card__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .contact-card__list li {
  position: relative;
  padding-left: 17px;
  font-size: 14px;
  line-height: 1.65;
  color: #b6cbd8;
}

.page-contact .contact-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
  opacity: 0.85;
}

.page-contact .contact-card__link {
  margin-top: 20px;
  display: inline-block;
}

/* ---------- 数据合作 ---------- */
.page-contact .contact-coop {
  background: linear-gradient(180deg, transparent, rgba(7, 26, 43, 0.8) 42%, transparent);
}

.page-contact .coop-band {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  align-items: center;
  padding: clamp(20px, 3.2vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-deep);
}

.page-contact .coop-band__media {
  margin: 0;
}

.page-contact .coop-band__media .media__frame {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #061726;
}

.page-contact .coop-band__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

.page-contact .coop-band__body .display-2 {
  margin: clamp(8px, 1.4vw, 14px) 0 0;
}

.page-contact .coop-band__body .prose {
  margin-top: clamp(12px, 1.8vw, 18px);
  color: var(--muted);
}

.page-contact .coop-band__body .prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .coop-list {
  margin-top: clamp(22px, 3.4vw, 38px);
  display: grid;
  gap: 12px;
}

.page-contact .coop-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-contact .coop-item:hover,
.page-contact .coop-item[open] {
  border-color: rgba(0, 229, 200, 0.48);
  background: rgba(10, 33, 54, 0.96);
}

.page-contact .coop-item .accordion__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(16px, 2.2vw, 22px) clamp(18px, 2.6vw, 26px);
  margin: 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .coop-item .accordion__q::-webkit-details-marker { display: none; }
.page-contact .coop-item .accordion__q::marker { content: ""; }

.page-contact .coop-item .accordion__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
}

.page-contact .coop-item .accordion__icon::before,
.page-contact .coop-item .accordion__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}

.page-contact .coop-item .accordion__icon::before { left: 0; top: 7px; width: 16px; height: 2px; }
.page-contact .coop-item .accordion__icon::after { left: 7px; top: 0; width: 2px; height: 16px; }

.page-contact .coop-item[open] .accordion__icon::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-contact .coop-item .accordion__a {
  padding: 0 clamp(18px, 2.6vw, 26px) clamp(18px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
  padding-top: clamp(14px, 2vw, 18px);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .coop-item .accordion__a p { margin: 0; }

/* ---------- 合作步骤流程带 ---------- */
.page-contact .flow-band {
  margin: clamp(24px, 3.8vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 7px;
  align-items: start;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 33, 54, 0.72);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease), background 0.22s var(--ease);
}

.page-contact .flow-step:hover,
.page-contact .flow-step:focus-within {
  border-color: rgba(0, 229, 200, 0.5);
  background: rgba(10, 33, 54, 0.98);
  transform: translateY(-3px);
}

.page-contact .flow-step__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  line-height: 1.35;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-contact .flow-step__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-size: clamp(15px, 1.75vw, 17px);
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.01em;
}

.page-contact .flow-step__text {
  grid-column: 2;
  grid-row: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 到访与寄送 ---------- */
.page-contact .visit-band {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--panel-deep);
}

.page-contact .visit-band__body {
  padding: clamp(22px, 3.4vw, 40px);
}

.page-contact .visit-band__body .display-2 {
  margin: clamp(8px, 1.4vw, 14px) 0 0;
  font-size: clamp(22px, 3.6vw, 34px);
}

.page-contact .visit-address {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: clamp(16px, 2.2vw, 22px);
  font-style: normal;
  display: grid;
  gap: 7px;
  background: var(--paper);
  color: #0A2136;
  border: 2px solid #123A57;
  border-radius: var(--radius);
  box-shadow: 6px 6px 0 0 rgba(0, 229, 200, 0.22);
}

.page-contact .visit-address__org {
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #04121F;
}

.page-contact .visit-address__line {
  font-size: 14px;
  line-height: 1.65;
  color: #1c3d55;
  overflow-wrap: anywhere;
}

.page-contact .visit-notes {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 11px;
}

.page-contact .visit-notes li {
  position: relative;
  padding-left: 19px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .visit-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  background: var(--amber);
  transform: rotate(45deg);
}

.page-contact .visit-band__media {
  margin: 0;
  order: -1;
}

.page-contact .visit-band__media .media__frame {
  height: 100%;
  overflow: hidden;
  background: #061726;
}

.page-contact .visit-band__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 4;
  object-fit: cover;
}

/* ---------- 联系前的准备 ---------- */
.page-contact .contact-prep {
  border-top: 1px solid var(--line);
}

.page-contact .prep-list {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: clamp(15px, 2.1vw, 20px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 33, 54, 0.6);
  transition: border-color 0.2s var(--ease);
}

.page-contact .prep-item:hover {
  border-color: rgba(0, 229, 200, 0.42);
}

.page-contact .prep-item__key {
  padding: 4px 11px;
  border: 1px solid rgba(0, 229, 200, 0.42);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  white-space: nowrap;
  line-height: 1.5;
}

.page-contact .prep-item__text {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.page-contact .contact-prep__tail {
  margin: clamp(20px, 2.8vw, 28px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-prep__tail a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-board {
    grid-template-columns: 1.16fr 0.86fr 1.02fr;
    align-items: start;
    gap: clamp(22px, 2.6vw, 34px);
  }

  .page-contact .contact-card--phone { margin-top: clamp(36px, 5.2vw, 72px); }
  .page-contact .contact-card--coop { margin-top: clamp(10px, 1.8vw, 24px); }

  .page-contact .coop-band {
    grid-template-columns: 1.04fr 0.96fr;
    gap: clamp(28px, 4vw, 54px);
  }

  .page-contact .flow-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .visit-band {
    grid-template-columns: 1fr 0.92fr;
    align-items: stretch;
  }

  .page-contact .visit-band__media { order: 2; }
  .page-contact .visit-band__body { order: 1; }

  .page-contact .visit-band__media img {
    height: 100%;
    aspect-ratio: auto;
    min-height: 320px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero__lead { font-size: 17px; }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 520px) {
  .page-contact .contact-hero .display-1 { max-width: none; }

  .page-contact .contact-card__value { font-size: 15px; }

  .page-contact .flow-step {
    grid-template-columns: 30px minmax(0, 1fr);
    column-gap: 12px;
  }

  .page-contact .prep-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .flow-step,
  .page-contact .prep-item,
  .page-contact .coop-item .accordion__icon::before,
  .page-contact .coop-item .accordion__icon::after {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .flow-step:hover {
    transform: none;
  }
}