.page-contact {
  --pc-hero-line: rgba(246, 242, 233, 0.16);
  --pc-hero-dim: rgba(246, 242, 233, 0.74);
  --pc-hero-dimmer: rgba(246, 242, 233, 0.52);
}

/* ---------- 首屏：深墨蓝联系场景 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  color: var(--paper-100);
  padding: calc(var(--header-h) + 32px) 0 56px;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(174, 183, 192, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(174, 183, 192, 0.06) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

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

.page-contact .contact-hero .breadcrumbs {
  margin-bottom: 30px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .contact-hero .breadcrumbs__link,
.page-contact .contact-hero .breadcrumbs__sep,
.page-contact .contact-hero .breadcrumbs__current {
  color: var(--pc-hero-dimmer);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumbs__link:hover {
  color: var(--paper-100);
}

.page-contact .contact-kicker {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(2rem, 7.5vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-contact .contact-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pc-hero-dim);
}

.page-contact .contact-hero__lines {
  margin-top: 34px;
  border-top: 1px solid var(--pc-hero-line);
}

.page-contact .contact-hero__line {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--pc-hero-line);
}

.page-contact .contact-hero__line-label {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pc-hero-dimmer);
}

.page-contact .contact-hero__line-value {
  font-family: var(--font-num);
  font-size: clamp(1rem, 4.4vw, 1.5rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper-100);
  overflow-wrap: anywhere;
  -webkit-user-select: all;
  user-select: all;
}

/* 右侧可滚动索引 */

.page-contact .contact-hero__side {
  margin-top: 44px;
}

.page-contact .contact-side__title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--pc-hero-dimmer);
}

.page-contact .contact-index__item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 0;
  border-bottom: 1px solid var(--pc-hero-line);
  text-decoration: none;
  color: inherit;
  transition: transform 0.18s ease;
}

.page-contact .contact-index__item:hover {
  transform: translateX(3px);
}

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

.page-contact .contact-index__num {
  font-family: var(--font-num);
  font-size: 12px;
  padding-top: 4px;
  color: var(--signal);
}

.page-contact .contact-index__name {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

.page-contact .contact-index__desc {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--pc-hero-dimmer);
}

/* ---------- 三条渠道 ---------- */

.page-contact .channel-grid {
  display: grid;
  gap: 1px;
  margin-top: 8px;
  background: var(--silver-200);
  border: 1px solid var(--silver-200);
}

.page-contact .channel {
  background: var(--paper-100);
  padding: 26px 22px 30px;
}

.page-contact .channel__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--signal-ink);
}

.page-contact .channel__title {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

.page-contact .channel__value {
  margin: 14px 0 0;
  font-family: var(--font-num);
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-800);
  overflow-wrap: anywhere;
}

.page-contact .channel__desc {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-600);
}

.page-contact .channel__meta {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: var(--line);
  font-size: 13px;
  color: var(--ink-600);
}

/* ---------- 通用图形容器 ---------- */

.page-contact .contact-figure {
  margin: 0 0 34px;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: var(--line);
  background: var(--paper-100);
  object-fit: contain;
}

.page-contact .contact-figure--wide {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.page-contact .contact-figure--square {
  max-width: 360px;
  margin-left: auto;
  margin-right: auto;
}

/* ---------- 处理范围 ---------- */

.page-contact .scope-grid {
  display: grid;
  gap: 26px;
}

.page-contact .scope-item {
  border-top: 2px solid var(--ink-950);
  padding-top: 18px;
}

.page-contact .scope-item__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--signal-ink);
}

.page-contact .scope-item__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

.page-contact .scope-item__desc {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-600);
}

/* ---------- 响应时间 ---------- */

.page-contact .response-grid {
  display: grid;
  gap: 32px;
  margin-top: 8px;
}

.page-contact .stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 40px;
  padding-bottom: 24px;
  border-bottom: var(--line);
}

.page-contact .stat-row .stat__value {
  font-family: var(--font-num);
  font-size: clamp(1.5rem, 5vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-contact .response-body p {
  margin: 24px 0 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-600);
}

/* ---------- 联系前准备 ---------- */

.page-contact .prep-list {
  margin-top: 8px;
  border-top: var(--line);
}

.page-contact .prep-list details {
  border-bottom: var(--line);
}

.page-contact .prep-list summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

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

.page-contact .prep-list summary::before {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--signal);
  border-bottom: 2px solid var(--signal);
  transform: rotate(-45deg);
  transition: transform 0.18s ease;
}

.page-contact .prep-list details[open] summary::before {
  transform: rotate(45deg);
}

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

.page-contact .prep-items {
  margin: 0;
  padding: 0 0 24px;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .prep-items li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-600);
}

.page-contact .prep-items li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 12px;
  width: 10px;
  height: 1px;
  background: var(--silver-400);
}

/* ---------- 合作面板 ---------- */

.page-contact .partner-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink-950);
  color: var(--paper-100);
  border-left: 4px solid var(--signal);
  padding: 38px 24px 42px;
}

.page-contact .partner-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(174, 183, 192, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(174, 183, 192, 0.06) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-contact .partner-panel > * {
  position: relative;
  z-index: 1;
}

.page-contact .partner-panel__index {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--signal);
}

.page-contact .partner-panel__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-contact .partner-panel p {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--pc-hero-dim);
}

.page-contact .partner-panel .btn {
  margin-top: 26px;
}

.page-contact .partner-panel .btn--ghost {
  border-color: rgba(246, 242, 233, 0.34);
  color: var(--paper-100);
}

.page-contact .partner-panel .btn--ghost:hover {
  border-color: var(--paper-100);
  background: rgba(246, 242, 233, 0.08);
}

.page-contact .next-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--pc-hero-line);
}

.page-contact .next-link {
  align-self: flex-start;
  font-size: 15px;
  color: var(--paper-100);
  text-decoration: none;
  border-bottom: 1px solid rgba(235, 90, 22, 0.7);
  padding-bottom: 2px;
}

.page-contact .next-link:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-contact .next-link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */

@media (min-width: 760px) {
  .page-contact .scope-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px 44px;
  }
}

@media (min-width: 860px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel {
    padding: 30px 26px 34px;
  }

  .page-contact .next-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 14px 36px;
  }
}

@media (min-width: 900px) {
  .page-contact .response-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 56px;
    align-items: center;
  }

  .page-contact .response-grid .contact-figure {
    margin-bottom: 0;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 48px) 0 88px;
  }

  .page-contact .contact-hero__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    gap: 72px;
    align-items: start;
  }

  .page-contact .contact-hero__side {
    margin-top: 8px;
    max-height: 448px;
    overflow-y: auto;
    padding-right: 18px;
    scrollbar-width: thin;
    scrollbar-color: var(--ink-600) transparent;
  }

  .page-contact .contact-hero__side::-webkit-scrollbar {
    width: 4px;
  }

  .page-contact .contact-hero__side::-webkit-scrollbar-thumb {
    background: var(--ink-600);
    border-radius: 2px;
  }
}

@media (min-width: 1000px) {
  .page-contact .partner-panel {
    padding: 56px 64px 60px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-index__item,
  .page-contact .prep-list summary::before {
    transition: none;
  }
}