.page-contact {
  --pc-frame: 3px;
  --pc-gap: clamp(16px, 3vw, 28px);
}

.page-contact *,
.page-contact *::before,
.page-contact *::after {
  box-sizing: border-box;
}

.page-contact .contact-frame {
  position: relative;
  margin-top: 20px;
  padding: clamp(18px, 4vw, 56px);
  border: var(--pc-frame) solid var(--line-strong);
  background:
    radial-gradient(circle at 88% 3%, rgba(25, 227, 200, 0.08), transparent 44%),
    linear-gradient(180deg, rgba(11, 39, 64, 0.62), rgba(6, 26, 43, 0.08) 60%);
  box-shadow: var(--hard-shadow);
}

.page-contact .contact-frame::before,
.page-contact .contact-frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 3px solid var(--cyan);
  pointer-events: none;
}

.page-contact .contact-frame::before {
  top: calc(-1 * var(--pc-frame));
  left: calc(-1 * var(--pc-frame));
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.page-contact .contact-frame::after {
  right: calc(-1 * var(--pc-frame));
  bottom: calc(-1 * var(--pc-frame));
  border-left-color: transparent;
  border-top-color: transparent;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  padding-bottom: clamp(14px, 3vw, 30px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  padding-left: clamp(12px, 2.2vw, 26px);
  border-left: 6px solid var(--coral);
  font-size: clamp(2.3rem, 8.4vw, 5.2rem);
  line-height: 0.96;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-contact .contact-hero__lede {
  max-width: 44ch;
  margin-top: clamp(16px, 2.6vw, 26px);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  line-height: 1.78;
  color: var(--cream);
  opacity: 0.9;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-contact .contact-banner {
  margin: clamp(20px, 4vw, 40px) 0 0;
  aspect-ratio: 1200 / 380;
  overflow: hidden;
  border: 3px solid var(--black);
  box-shadow: var(--hard-shadow);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 目录 ---------- */

.page-contact .section-index {
  margin-top: clamp(24px, 4vw, 44px);
  padding: 18px 0 clamp(14px, 2vw, 22px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .section-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .section-index__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 4px 0;
  font-size: 0.95rem;
  color: var(--cream);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color 120ms linear, border-color 120ms linear;
}

.page-contact .section-index__link:hover,
.page-contact .section-index__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .section-index__num {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clay);
}

/* ---------- 章节通用 ---------- */

.page-contact .contact-frame > section + section {
  margin-top: clamp(34px, 6vw, 78px);
  padding-top: clamp(22px, 4vw, 50px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-block {
  scroll-margin-top: 76px;
}

.page-contact .block-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(16px, 3vw, 30px);
}

.page-contact .block-head__num {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-contact .block-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4.2vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.15;
  color: var(--cream);
}

.page-contact .block-lede {
  max-width: 52ch;
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--cream);
  opacity: 0.88;
}

/* ---------- 客服渠道 ---------- */

.page-contact .channel-grid {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(18px, 3vw, 28px);
  background: var(--panel);
  border: 3px solid var(--black);
  box-shadow: var(--hard-shadow);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 120ms linear;
}

.page-contact .channel-card:hover {
  transform: translateY(-2px);
  box-shadow: 8px 8px 0 var(--black);
  border-color: var(--line-strong);
}

.page-contact .channel-card__key {
  margin: 0;
  color: var(--rock);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(0.95rem, 4.6vw, 2rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.page-contact .channel-card__value--mail {
  color: var(--cyan);
}

.page-contact .channel-card__value--tel {
  color: var(--cream);
}

.page-contact .channel-card__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .channel-card__hint {
  max-width: 28ch;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--rock);
}

.page-contact .copy-btn {
  appearance: none;
  min-height: 44px;
  padding: 10px 18px;
  font-family: var(--font-body);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--cream);
  background: transparent;
  border: 2px solid var(--line-strong);
  cursor: pointer;
  transition: color 120ms linear, border-color 120ms linear;
}

.page-contact .copy-btn:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .copy-btn[data-copied] {
  color: var(--moss);
  border-color: var(--moss);
}

.page-contact .channel-note {
  max-width: 58ch;
  margin: clamp(18px, 3vw, 26px) 0 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--rock);
}

/* ---------- 咨询分类 ---------- */

.page-contact .intent-visual {
  margin: 0 0 clamp(20px, 3.4vw, 34px);
  aspect-ratio: 1200 / 400;
  overflow: hidden;
  border: 3px solid var(--black);
  box-shadow: var(--hard-shadow);
}

.page-contact .intent-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .intent-track {
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 4px 4px 22px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-contact .intent-track::-webkit-scrollbar {
  height: 6px;
}

.page-contact .intent-track::-webkit-scrollbar-thumb {
  background: var(--line-strong);
}

.page-contact .intent-card {
  flex: 0 0 clamp(250px, 76vw, 340px);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: var(--cream);
  border: 3px solid var(--black);
  box-shadow: var(--hard-shadow);
}

.page-contact .intent-card__num {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--clay);
}

.page-contact .intent-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.14rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--ink-deep);
}

.page-contact .intent-card__body {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--ink-deep);
}

.page-contact .intent-card__sample {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(6, 26, 43, 0.28);
  font-size: 0.85rem;
  line-height: 1.6;
  color: #3a5266;
}

/* ---------- 响应节奏 ---------- */

.page-contact .contact-split {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-contact .timing-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .timing-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .timing-list li:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .timing-list__time {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-num);
  font-size: clamp(0.95rem, 2.4vw, 1.18rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .timing-list__text {
  display: block;
  font-size: 1rem;
  line-height: 1.68;
  color: var(--cream);
}

.page-contact .timing-aside {
  align-self: start;
  padding: 20px;
  border: 3px solid var(--black);
  background: rgba(11, 39, 64, 0.55);
  box-shadow: var(--hard-shadow);
}

.page-contact .timing-aside__text {
  margin: 12px 0 0;
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--cream);
}

/* ---------- 合作对接 ---------- */

.page-contact .partner-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .partner-list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.98rem;
  line-height: 1.62;
  color: var(--cream);
}

.page-contact .partner-list li:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .partner-list .num {
  flex: 0 0 auto;
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-contact .partner-aside {
  align-self: start;
  padding: clamp(18px, 3vw, 24px);
  border: 3px solid var(--line-strong);
  background: rgba(11, 39, 64, 0.45);
}

.page-contact .partner-aside__num {
  margin: 0;
  font-size: clamp(2.1rem, 7vw, 3.3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--coral);
  font-variant-numeric: tabular-nums;
}

.page-contact .partner-aside__text {
  margin: 14px 0 0;
  font-size: 0.93rem;
  line-height: 1.72;
  color: var(--cream);
}

/* ---------- 地址与备案 ---------- */

.page-contact .identity-grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
}

.page-contact .identity-item {
  padding-top: 18px;
  border-top: 3px solid var(--coral);
}

.page-contact .identity-item__value {
  margin: 10px 0 0;
  font-family: var(--font-num);
  font-size: clamp(1rem, 2.6vw, 1.34rem);
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-contact .identity-details {
  margin-top: 10px;
}

.page-contact .identity-details summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-num);
  font-size: clamp(1rem, 2.6vw, 1.34rem);
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-contact .identity-details summary::-webkit-details-marker {
  display: none;
}

.page-contact .identity-details summary::after {
  content: "展开";
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--rock);
  border: 1px solid var(--line-strong);
  padding: 3px 9px;
}

.page-contact .identity-details[open] summary::after {
  content: "收起";
}

.page-contact .identity-details summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .identity-details__body {
  max-width: 50ch;
  padding-top: 12px;
}

.page-contact .identity-details__body p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.78;
  color: var(--rock);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-contact .contact-banner {
    aspect-ratio: 1200 / 300;
  }

  .page-contact .identity-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 860px) {
  .page-contact .channel-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-split {
    grid-template-columns: 7fr 3fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .copy-btn,
  .page-contact .section-index__link {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}