.page-contact {
  --pc-gap: clamp(18px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: calc(var(--header-h) + 18px) 0 clamp(34px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 94% -20%, rgba(30, 111, 168, 0.20), transparent 62%),
    radial-gradient(80% 70% at -8% 108%, rgba(201, 138, 46, 0.18), transparent 60%);
}

.page-contact .contact-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .contact-hero__main h1 {
  margin: 10px 0 0;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--fg);
}

.page-contact .contact-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: var(--step-0);
  line-height: 1.78;
  color: var(--fg-muted);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .contact-facts {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-facts__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 14px 16px;
  background: var(--sandstone);
  min-width: 0;
}

.page-contact .contact-facts__num {
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.1;
  letter-spacing: 0.02em;
  color: var(--gold-ink);
}

.page-contact .contact-facts__txt {
  font-size: 13px;
  line-height: 1.5;
  color: var(--fg-muted);
}

/* 深墨绿联系卡 */
.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--deep-green);
  color: var(--on-dark);
  box-shadow: 0 26px 60px -36px rgba(18, 22, 25, 0.6);
}

.page-contact .contact-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(162deg, rgba(18, 59, 51, 0.86) 0%, rgba(18, 22, 25, 0.92) 58%, rgba(106, 63, 160, 0.62) 100%);
  pointer-events: none;
}

.page-contact .contact-card__body {
  position: relative;
  z-index: 1;
  padding: clamp(22px, 4vw, 36px);
}

.page-contact .contact-card__flag {
  margin: 0 0 20px;
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid rgba(201, 138, 46, 0.7);
  border-radius: var(--radius);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--sand-gold);
}

.page-contact .contact-card__label {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--on-dark-muted);
}

.page-contact .contact-card__value {
  margin: 0 0 20px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.4vw, 30px);
  line-height: 1.2;
  letter-spacing: 0.04em;
  color: var(--on-dark);
  word-break: break-word;
}

.page-contact .contact-card__value--mail {
  font-size: clamp(13px, 1.9vw, 17px);
  letter-spacing: 0.01em;
  word-break: break-all;
}

.page-contact .contact-card__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--on-dark-muted);
}

/* ---------- 通用章节 ---------- */
.page-contact .contact-sec {
  padding: clamp(44px, 6vw, 88px) 0;
}

.page-contact .contact-sec--paper {
  background: var(--bg-alt);
}

.page-contact .contact-sec--tight {
  padding: clamp(34px, 4.4vw, 60px) 0 clamp(44px, 6vw, 76px);
}

.page-contact .contact-sec__head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 3vw, 38px);
}

.page-contact .contact-sec__head h2 {
  margin: 8px 0 12px;
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .contact-sec__lead {
  margin: 0;
  font-size: var(--step-0);
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-contact .contact-sec__mini {
  margin: 0 0 18px;
  font-size: clamp(20px, 2.4vw, 27px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-contact .coop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 2px solid var(--line-strong);
}

.page-contact .coop-item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: clamp(16px, 2.2vw, 24px) 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-item__no {
  padding-top: 5px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold-ink);
}

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

.page-contact .coop-item__body h3 {
  margin: 0 0 7px;
  font-size: var(--step-1);
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-contact .coop-item__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--fg-muted);
}

.page-contact .coop-item__meta {
  display: inline-block;
  margin: 0;
  padding: 4px 9px;
  border-radius: var(--radius);
  background: var(--paper-grey);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--deep-green);
}

.page-contact .coop-media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--deep-green);
}

.page-contact .coop-media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .coop-media .media__caption {
  position: absolute;
  inset: auto 0 0 0;
  margin: 0;
  padding: 16px 18px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--on-dark);
  background: linear-gradient(180deg, rgba(18, 22, 25, 0) 0%, rgba(18, 22, 25, 0.82) 70%);
}

/* 三步流程 */
.page-contact .flow {
  list-style: none;
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .flow__step {
  position: relative;
  padding: 18px 20px;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-width: 0;
}

.page-contact .flow__no {
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--sand-gold);
}

.page-contact .flow__step h3 {
  margin: 0 0 7px;
  font-size: 17px;
  line-height: 1.3;
}

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

/* ---------- 准备清单 ---------- */
.page-contact .prep {
  position: relative;
}

.page-contact .prep__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .prep__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-contact .prep__tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--sandstone);
  font-size: 14px;
  font-weight: 700;
  color: var(--fg);
  cursor: pointer;
  transition: background var(--t-filter) var(--ease),
              color var(--t-filter) var(--ease),
              border-color var(--t-filter) var(--ease);
}

.page-contact .prep__tab:hover {
  border-color: var(--grape-purple);
  color: var(--grape-purple);
}

.page-contact .prep__panel {
  display: none;
  padding: clamp(20px, 3vw, 30px);
  background: var(--sandstone);
  border: 1px solid var(--line);
  border-left: 4px solid var(--sand-gold);
  border-radius: var(--radius);
}

.page-contact .prep__panel h3 {
  margin: 0 0 14px;
  font-size: var(--step-1);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

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

.page-contact .prep__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--fg);
}

.page-contact .prep__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--tianshan-blue);
  transform: rotate(45deg);
}

.page-contact .prep__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--fg-muted);
}

.page-contact .prep__hint a {
  color: var(--tianshan-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .prep__hint a:hover {
  color: var(--grape-purple);
}

.page-contact .prep__radio:nth-of-type(1):checked ~ .prep__tabs .prep__tab:nth-child(1),
.page-contact .prep__radio:nth-of-type(2):checked ~ .prep__tabs .prep__tab:nth-child(2),
.page-contact .prep__radio:nth-of-type(3):checked ~ .prep__tabs .prep__tab:nth-child(3),
.page-contact .prep__radio:nth-of-type(4):checked ~ .prep__tabs .prep__tab:nth-child(4) {
  background: var(--deep-green);
  border-color: var(--deep-green);
  color: var(--on-dark);
}

.page-contact .prep__radio:nth-of-type(1):checked ~ .prep__panels .prep__panel:nth-of-type(1),
.page-contact .prep__radio:nth-of-type(2):checked ~ .prep__panels .prep__panel:nth-of-type(2),
.page-contact .prep__radio:nth-of-type(3):checked ~ .prep__panels .prep__panel:nth-of-type(3),
.page-contact .prep__radio:nth-of-type(4):checked ~ .prep__panels .prep__panel:nth-of-type(4) {
  display: block;
  animation: pc-panel-fade var(--t-filter) var(--ease) both;
}

@keyframes pc-panel-fade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 地址横条 ---------- */
.page-contact .contact-band {
  position: relative;
  overflow: hidden;
  padding: clamp(40px, 6vw, 78px) 0 clamp(38px, 5vw, 68px);
  background: var(--deep-green);
  color: var(--on-dark);
}

.page-contact .contact-band::before {
  content: "";
  position: absolute;
  inset: -10%;
  opacity: 0.18;
  background-image: repeating-radial-gradient(circle at 84% 26%,
    transparent 0 26px,
    rgba(143, 211, 208, 0.7) 26px 27px);
  pointer-events: none;
}

.page-contact .contact-band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(70% 90% at 4% 110%, rgba(224, 106, 50, 0.28), transparent 62%);
  pointer-events: none;
}

.page-contact .contact-band__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
  align-items: start;
}

.page-contact .eyebrow--on-dark {
  color: var(--sand-gold);
}

.page-contact .contact-band__main h2 {
  margin: 8px 0 16px;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-contact .contact-band__addr {
  position: relative;
  margin: 0 0 16px;
  padding-bottom: 16px;
  font-size: clamp(19px, 2.6vw, 28px);
  line-height: 1.4;
  font-weight: 900;
  letter-spacing: 0.01em;
  color: var(--on-dark);
}

.page-contact .contact-band__addr::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 64px;
  height: 4px;
  background: var(--sand-gold);
}

.page-contact .contact-band__note {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-muted);
}

.page-contact .contact-band__meta {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.page-contact .contact-band__row {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 16px;
  background: rgba(18, 22, 25, 0.34);
}

.page-contact .contact-band__row dt {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--on-dark-muted);
  padding-top: 3px;
}

.page-contact .contact-band__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--on-dark);
  word-break: break-word;
}

.page-contact .contact-band__row dd.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.page-contact .contact-band__mail {
  word-break: break-all;
}

/* ---------- 其他入口 ---------- */
.page-contact .quick-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .quick-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sandstone);
  color: var(--fg);
  text-decoration: none;
  transition: transform var(--t-card) var(--ease),
              border-color var(--t-card) var(--ease);
}

.page-contact .quick-link:hover {
  transform: translateY(-4px);
  border-color: var(--tianshan-blue);
}

.page-contact .quick-link__label {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .quick-link__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--fg-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: clamp(28px, 3.6vw, 48px);
  }

  .page-contact .contact-card {
    order: -1;
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-contact .contact-band__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (min-width: 960px) {
  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.72fr);
  }

  .page-contact .coop-media {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 820px) {
  .page-contact .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .flow__step + .flow__step::before {
    content: "→";
    position: absolute;
    left: -13px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 17px;
    line-height: 1;
    color: var(--sand-gold);
  }
}

@media (min-width: 1040px) {
  .page-contact .quick-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .prep__radio:nth-of-type(1):checked ~ .prep__panels .prep__panel:nth-of-type(1),
  .page-contact .prep__radio:nth-of-type(2):checked ~ .prep__panels .prep__panel:nth-of-type(2),
  .page-contact .prep__radio:nth-of-type(3):checked ~ .prep__panels .prep__panel:nth-of-type(3),
  .page-contact .prep__radio:nth-of-type(4):checked ~ .prep__panels .prep__panel:nth-of-type(4) {
    animation: none;
  }

  .page-contact .quick-link:hover {
    transform: none;
  }
}