/* ===== 联络通道 / page-contact ===== */

.page-contact {
  background: var(--ink-blue);
  color: var(--silver);
  --contact-gap: clamp(16px, 2.4vw, 30px);
}

/* 区块配色在页面内重申，保证三类区块的节奏稳定 */
.page-contact .block-data { background: var(--ink-blue); color: var(--silver); }
.page-contact .block-read { background: var(--paper); color: var(--ink-black); }
.page-contact .block-graph { background: var(--panel-blue); color: var(--silver); }

/* ---------- 首屏 ---------- */
.page-contact .contact-intro { padding-bottom: clamp(26px, 4vw, 46px); }

.page-contact .breadcrumbs { margin-bottom: clamp(22px, 3.4vw, 40px); }
.page-contact .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
}
.page-contact .breadcrumbs-link {
  color: var(--silver);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.page-contact .breadcrumbs-link:hover { color: var(--orange-soft); border-bottom-color: var(--orange-soft); }
.page-contact .breadcrumbs-sep { color: rgba(199, 208, 217, 0.45); }
.page-contact .breadcrumbs-current { color: var(--orange); }

.page-contact .contact-title {
  margin: 0;
  max-width: 18ch;
  font-family: var(--font-sans);
  font-size: clamp(32px, 6.2vw, 72px);
  font-weight: 200;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-contact .contact-lead {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 66ch;
  font-size: var(--fs-18);
  line-height: 1.75;
  color: var(--silver);
}

.page-contact .link {
  color: var(--orange-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.page-contact .link:hover { color: var(--orange); }
.page-contact .block-read .link { color: var(--green); }
.page-contact .block-read .link:hover { color: var(--orange); }

/* ---------- 联系方式条带 ---------- */
.page-contact .contact-channels { padding-top: clamp(34px, 5vw, 62px); padding-bottom: clamp(38px, 6vw, 78px); }

.page-contact .block-read .eyebrow { color: var(--ink-quiet); }
.page-contact .block-read .section-title { color: var(--ink-black); }
.page-contact .block-read .section-lead { color: var(--ink-quiet); }

.page-contact .channel-list { margin-top: clamp(26px, 4vw, 46px); }

.page-contact .channel-bar {
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--line-paper);
}
.page-contact .channel-bar:last-child { border-bottom: 1px solid var(--line-paper); }

.page-contact .channel-name {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-18);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink-black);
}
.page-contact .channel-note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--ink-quiet);
}

.page-contact .channel-value-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  min-width: 0;
}
.page-contact .channel-value {
  min-width: 0;
  padding-bottom: 2px;
  font-family: var(--font-mono);
  font-size: clamp(19px, 4.4vw, 36px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ink-black);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 3px solid var(--orange);
  transition: color .18s ease;
}
.page-contact .channel-value:hover { color: var(--orange); }

.page-contact .copy-btn {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  padding: 10px 16px;
  border: 1.5px solid var(--orange);
  border-radius: 0;
  background: transparent;
  color: var(--ink-black);
  white-space: nowrap;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease;
}
.page-contact .copy-btn:hover { background: var(--orange); color: var(--ink-black); }
.page-contact .copy-btn:focus-visible { outline: 2px solid var(--ink-black); outline-offset: 3px; }
.page-contact .copy-btn[data-copied] {
  background: var(--green);
  border-color: var(--green);
  color: var(--paper);
}

@media (min-width: 900px) {
  .page-contact .channel-bar {
    grid-template-columns: minmax(220px, 0.8fr) minmax(0, 1.6fr);
    grid-template-areas:
      "name value"
      "note value";
    column-gap: clamp(24px, 4vw, 60px);
    row-gap: 4px;
    align-items: center;
  }
  .page-contact .channel-name { grid-area: name; align-self: end; }
  .page-contact .channel-note { grid-area: note; align-self: start; }
  .page-contact .channel-value-row { grid-area: value; }
}

/* ---------- 01 渠道与适用事务 ---------- */
.page-contact .contact-scope-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  aspect-ratio: 16 / 7;
  border: 1px solid var(--line-dark);
}
@media (min-width: 900px) {
  .page-contact .contact-scope-figure { aspect-ratio: 8 / 3; }
}
.page-contact .media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .scope-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
  margin-top: clamp(26px, 4vw, 48px);
}
@media (min-width: 880px) {
  .page-contact .scope-grid { grid-template-columns: 1.15fr 0.85fr; }
}

.page-contact .scope-col {
  padding-left: clamp(14px, 2vw, 24px);
  border-left: 2px solid var(--line-dark);
}
.page-contact .scope-col--mail { border-left-color: var(--orange); }
.page-contact .scope-col--phone { border-left-color: var(--green-soft); }

.page-contact .scope-tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  color: var(--orange);
}
.page-contact .scope-col--phone .scope-tag { color: var(--green-soft); }

.page-contact .scope-title {
  margin: 0 0 16px;
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 300;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .scope-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .scope-list li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--silver);
}
.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 9px;
  height: 1.5px;
  background: var(--silver);
  opacity: 0.5;
}

/* ---------- 02 纠错材料 ---------- */
.page-contact .fix-grid {
  display: grid;
  gap: clamp(26px, 4vw, 50px);
  margin-top: clamp(24px, 3.4vw, 40px);
}
@media (min-width: 940px) {
  .page-contact .fix-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }
}

.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .check-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-paper);
}
.page-contact .check-item:first-child { border-top: 1px solid var(--line-paper); }

.page-contact .check-box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 20px;
  height: 20px;
  margin: 4px 0 0;
  border: 1.5px solid var(--ink-quiet);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  flex: none;
}
.page-contact .check-box:checked { border-color: var(--green); background: var(--green); }
.page-contact .check-box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(45deg);
}
.page-contact .check-box:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

.page-contact .check-label {
  display: grid;
  gap: 4px;
  cursor: pointer;
  min-width: 0;
}
.page-contact .check-text {
  font-family: var(--font-sans);
  font-size: var(--fs-18);
  font-weight: 600;
  color: var(--ink-black);
}
.page-contact .check-hint {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--ink-quiet);
  overflow-wrap: anywhere;
}

.page-contact .fix-tip {
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--ink-quiet);
}

.page-contact .fix-figure {
  margin: 0;
  aspect-ratio: 5 / 4;
}

/* ---------- 03 在线时段 ---------- */
.page-contact .time-list {
  margin: clamp(24px, 3.4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}
.page-contact .time-row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-darker);
}
@media (min-width: 760px) {
  .page-contact .time-row {
    grid-template-columns: minmax(180px, 250px) minmax(0, 1fr);
    column-gap: clamp(18px, 3vw, 44px);
    align-items: baseline;
  }
}
.page-contact .time-key {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.02em;
  color: var(--orange-soft);
}
.page-contact .time-val {
  font-size: 16px;
  line-height: 1.72;
  color: var(--silver);
}

/* ---------- 04 站点身份与备案 ---------- */
.page-contact .identity-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 46px);
  margin-top: clamp(22px, 3vw, 36px);
}
@media (min-width: 900px) {
  .page-contact .identity-grid { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); }
}

.page-contact .block-graph .prose { color: var(--silver); }

.page-contact .identity-list {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line-dark);
}
.page-contact .identity-row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-darker);
}
@media (min-width: 700px) {
  .page-contact .identity-row {
    grid-template-columns: 120px minmax(0, 1fr);
    column-gap: 16px;
    align-items: baseline;
  }
}
.page-contact .identity-key {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--silver);
  opacity: 0.7;
}
.page-contact .identity-val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .identity-aside {
  padding-left: clamp(14px, 2vw, 24px);
  border-left: 2px solid var(--alert);
}
.page-contact .identity-warn {
  margin: 0 0 14px;
  font-size: var(--fs-18);
  line-height: 1.65;
  color: var(--paper);
}
.page-contact .identity-fine {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--silver);
}

.page-contact .identity-svg {
  display: block;
  width: 100%;
  max-width: 640px;
  height: auto;
  margin-top: clamp(30px, 4vw, 54px);
}
.page-contact .identity-svg .svg-line-a,
.page-contact .identity-svg .svg-line-b { stroke: var(--green-soft); opacity: 0.75; }
.page-contact .identity-svg .svg-line-c { stroke: var(--silver); opacity: 0.35; }
.page-contact .identity-svg .svg-node circle { fill: var(--orange); }
.page-contact .identity-svg .svg-node circle:first-child,
.page-contact .identity-svg .svg-node circle:nth-child(2) { fill: var(--green-soft); }

@media (prefers-reduced-motion: reduce) {
  .page-contact .breadcrumbs-link,
  .page-contact .channel-value,
  .page-contact .copy-btn,
  .page-contact .link { transition: none; }
}