.page-contact {
  color: var(--text-000);
}

/* ---------- 首屏：斜向色块 + 错位双栏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-top: 40px;
  padding-bottom: 72px;
  background: var(--ink-000);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: min(820px, 72%);
  height: 150%;
  background: linear-gradient(200deg, rgba(43, 255, 163, 0.14), rgba(43, 255, 163, 0) 62%);
  transform: rotate(14deg);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--signal-500) 0 18%, var(--line-200) 18% 100%);
}

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

.page-contact .breadcrumb {
  margin-bottom: 40px;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: center;
}

.page-contact .contact-hero__title {
  margin: 14px 0 20px;
  font-weight: 300;
  letter-spacing: -0.02em;
}

.page-contact .contact-hero__lede {
  max-width: 34em;
  color: var(--text-400);
}

.page-contact .contact-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 32px;
}

.page-contact .copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  max-width: 100%;
  padding: 12px 18px;
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  background: var(--ink-100);
  color: var(--text-000);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .copy-chip:hover {
  border-color: var(--signal-500);
  background: var(--ink-200);
  transform: translateY(-1px);
}

.page-contact .copy-chip:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: 2px;
}

.page-contact .copy-chip__key {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--text-400);
  white-space: nowrap;
}

.page-contact .copy-chip__val {
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.page-contact .copy-chip--sm {
  padding: 8px 14px;
  align-self: flex-start;
}

.page-contact .copy-status {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--signal-500);
  min-height: 1em;
}

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

/* ---------- 通道列表：斜向错位 ---------- */
.page-contact .contact-channels {
  position: relative;
  background: var(--ink-100);
}

.page-contact .contact-channels__note {
  max-width: 30em;
}

.page-contact .channel-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-200);
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 28px 0 28px 20px;
  border-bottom: 1px solid var(--line-200);
  transition: background var(--dur) var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--line-200);
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  background: var(--signal-500);
  box-shadow: 0 0 20px rgba(43, 255, 163, 0.5);
}

.page-contact .channel__idx {
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--text-400);
}

.page-contact .channel__body {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-contact .channel__value {
  font-size: clamp(1.25rem, 4.2vw, 2rem);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-000);
  overflow-wrap: anywhere;
}

.page-contact .channel__value--addr {
  font-size: clamp(1.0625rem, 2.4vw, 1.375rem);
  line-height: 1.5;
  color: var(--data-500);
}

.page-contact .channel__tag {
  align-self: flex-start;
  padding: 4px 10px;
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--text-400);
}

.page-contact .channel__side {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .channel__use {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-400);
  max-width: 40em;
}

/* ---------- 值班时段 ---------- */
.page-contact .contact-hours {
  position: relative;
  background: var(--ink-000);
}

.page-contact .hours-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-contact .hours-grid__text {
  margin: 16px 0 0;
  max-width: 38em;
  color: var(--text-400);
}

.page-contact .hours-notes {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .hours-notes li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-400);
}

.page-contact .hours-notes li::before {
  content: "";
  margin-top: 0.6em;
  width: 8px;
  height: 2px;
  background: var(--signal-500);
}

.page-contact .hours-grid__media {
  margin: 0;
}

.page-contact .clock-strip {
  position: relative;
  margin-top: 56px;
  height: 64px;
  border-top: 1px solid var(--line-200);
  border-bottom: 1px solid var(--line-200);
  background-image: repeating-linear-gradient(
    90deg,
    var(--line-200) 0 1px,
    transparent 1px 4.1667%
  );
  background-position: left top;
  background-size: 100% 12px;
  background-repeat: repeat-x;
}

.page-contact .clock-strip__span {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  right: 25%;
  background: linear-gradient(180deg, rgba(43, 255, 163, 0.22), rgba(43, 255, 163, 0.04));
  border-left: 1px solid var(--signal-500);
  border-right: 1px solid var(--signal-500);
}

.page-contact .clock-mark {
  position: absolute;
  bottom: -22px;
  transform: translateX(-50%);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--signal-500);
  white-space: nowrap;
}

.page-contact .clock-mark--start {
  left: 37.5%;
}

.page-contact .clock-mark--end {
  left: 75%;
}

/* ---------- 反馈清单 ---------- */
.page-contact .contact-brief {
  background: var(--ink-100);
}

.page-contact .contact-brief__note {
  max-width: 28em;
}

.page-contact .brief-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-200);
}

.page-contact .brief-item {
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--line-200);
}

.page-contact .brief-item__box {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line-200);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--data-500);
}

.page-contact .brief-item__body h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
}

.page-contact .brief-item__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-400);
  max-width: 42em;
}

/* ---------- 折叠说明块 ---------- */
.page-contact .detail-block {
  border: 1px solid var(--line-200);
  border-radius: var(--r);
  background: var(--ink-200);
  padding: 16px 20px;
}

.page-contact .detail-block--inline {
  background: transparent;
}

.page-contact .detail-block summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  color: var(--text-000);
}

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

.page-contact .detail-block summary::before {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--signal-500);
}

.page-contact .detail-block[open] summary::before {
  content: "–";
}

.page-contact .detail-block summary:focus-visible {
  outline: 2px solid var(--signal-500);
  outline-offset: 3px;
}

.page-contact .detail-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .detail-list li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 10px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-400);
}

.page-contact .detail-list li::before {
  content: "";
  margin-top: 0.65em;
  width: 6px;
  height: 1px;
  background: var(--text-400);
}

.page-contact .brief-more {
  margin-top: 28px;
}

/* ---------- 合作与纠错 ---------- */
.page-contact .contact-partner {
  background: var(--ink-000);
}

.page-contact .contact-partner__note {
  max-width: 28em;
}

.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: 24px;
  border-top: 1px solid var(--line-200);
}

.page-contact .partner-col {
  padding: 28px 0;
  border-bottom: 1px solid var(--line-200);
}

.page-contact .partner-col__idx {
  display: block;
  margin-bottom: 14px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--signal-500);
}

.page-contact .partner-col h3 {
  margin: 0 0 12px;
  font-size: 1.125rem;
}

.page-contact .partner-col p {
  margin: 0 0 12px;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-400);
}

.page-contact .partner-col a {
  color: var(--signal-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 255, 163, 0.4);
}

.page-contact .partner-col a:hover {
  border-bottom-color: var(--signal-500);
}

.page-contact .partner-col__hint {
  font-family: var(--font-mono);
  font-size: 0.75rem !important;
  line-height: 1.8 !important;
  letter-spacing: 0.02em;
  color: var(--data-500) !important;
}

.page-contact .partner-foot {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px dashed var(--line-200);
}

.page-contact .partner-foot p {
  margin: 0;
  max-width: 46em;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-400);
}

.page-contact .partner-foot a {
  color: var(--text-000);
  text-decoration: none;
  border-bottom: 1px solid var(--line-200);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .partner-foot a:hover {
  color: var(--signal-500);
  border-bottom-color: var(--signal-500);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .brief-item {
    grid-template-columns: 44px 1fr;
    gap: 24px;
    padding: 28px 0;
  }

  .page-contact .brief-item__box {
    width: 44px;
    height: 44px;
  }

  .page-contact .channel {
    padding-left: 28px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding-top: 56px;
    padding-bottom: 104px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 56px;
  }

  .page-contact .channel {
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 0.92fr);
    align-items: start;
    gap: 32px;
    padding: 34px 0 34px 28px;
  }

  .page-contact .channel:nth-child(2) {
    padding-left: 68px;
  }

  .page-contact .channel:nth-child(3) {
    padding-left: 108px;
  }

  .page-contact .hours-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 64px;
  }

  .page-contact .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .partner-col {
    padding: 32px 28px 32px 0;
    border-bottom: none;
    border-right: 1px solid var(--line-200);
  }

  .page-contact .partner-col:last-child {
    border-right: none;
    padding-right: 0;
  }

  .page-contact .partner-col + .partner-col {
    padding-left: 28px;
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-hero__media {
    margin-right: -48px;
  }

  .page-contact .contact-channels__note,
  .page-contact .contact-brief__note,
  .page-contact .contact-partner__note {
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-chip,
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .partner-foot a {
    transition: none;
  }

  .page-contact .copy-chip:hover {
    transform: none;
  }
}