.page-contact {
  padding-bottom: clamp(64px, 9vw, 110px);
}

.page-contact .breadcrumb {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
  margin-bottom: 18px;
}

.page-contact .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin: 0 8px;
  color: var(--moss);
}

.page-contact .breadcrumb a {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1px;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--live);
  border-bottom-color: var(--live);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--cream);
}

/* ---------- 左右对开骨架 ---------- */
.page-contact .contact-fold {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  margin-top: 26px;
}

/* ---------- 左侧联络面板 ---------- */
.page-contact .contact-board {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--night);
  border: 1px solid var(--line-strong);
  padding: clamp(22px, 5vw, 38px);
}

.page-contact .board-scene {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-contact .board-scene img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: saturate(0.45) brightness(0.55);
}

.page-contact .board-scene::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(11, 18, 32, 0.7) 0%,
    rgba(11, 18, 32, 0.92) 46%,
    #0b1220 100%
  );
}

.page-contact .board-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  min-width: 0;
}

.page-contact .board-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(27px, 6vw, 39px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-contact .board-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-dim);
  max-width: 34em;
}

.page-contact .channel-list {
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .channel {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  min-width: 0;
}

.page-contact .channel:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .channel-key {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-contact .channel-val {
  display: inline-block;
  max-width: 100%;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.5vw, 21px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--live);
  text-decoration: none;
  overflow-wrap: anywhere;
  border-bottom: 1px solid rgba(200, 255, 61, 0.32);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-contact .channel-val:hover,
.page-contact .channel-val:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--cream);
}

.page-contact .channel-val--plain {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  border-bottom: 0;
}

.page-contact .channel-use {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 右侧说明区 ---------- */
.page-contact .contact-flow {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: clamp(30px, 4.5vw, 52px);
}

.page-contact .flow-section {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-contact .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 18px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.2;
  letter-spacing: 0.01em;
  color: var(--cream);
}

.page-contact .section-note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

.page-contact .prose {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
  max-width: 44em;
}

/* ---------- 使用场景 ---------- */
.page-contact .case-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .case-item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: var(--surface);
  border-left: 2px solid var(--moss);
  border-bottom: 1px solid var(--line);
  transition: background-color 0.16s var(--ease), border-left-color 0.16s var(--ease);
}

.page-contact .case-item:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .case-item:hover {
  background: var(--grass);
  border-left-color: var(--live);
}

.page-contact .case-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-contact .case-tag--brick {
  color: var(--brick);
}

.page-contact .case-tag--mint {
  color: var(--mint);
}

.page-contact .case-title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--cream);
}

.page-contact .case-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 46em;
}

.page-contact .case-route {
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mint);
}

/* ---------- 勘误提交清单 ---------- */
.page-contact .check-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

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

.page-contact .check-step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  column-gap: 10px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .check-step:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .step-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--live);
}

.page-contact .step-title {
  grid-column: 2;
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--cream);
}

.page-contact .step-text {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-contact .contact-figure {
  margin: 0;
  background: var(--grass);
  border: 1px solid var(--line);
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 640;
  object-fit: cover;
}

.page-contact .contact-figure figcaption {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 回复节奏 ---------- */
.page-contact .pace-band {
  display: flex;
  align-items: flex-start;
  padding: 20px 22px;
  border-left: 3px solid var(--amber);
  background: linear-gradient(90deg, rgba(255, 165, 31, 0.16) 0%, rgba(22, 32, 47, 0.92) 55%);
}

.page-contact .pace-band .band-line {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--text);
}

.page-contact .pace-list {
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .pace-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .pace-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-contact .pace-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

/* ---------- 合作 ---------- */
.page-contact .partner-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .partner-item {
  background: var(--surface);
  padding: 18px 20px;
}

.page-contact .partner-tag {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mint);
}

.page-contact .partner-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 继续浏览 ---------- */
.page-contact .next-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .next-list li {
  border-bottom: 1px solid var(--line);
}

.page-contact .next-list a {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 6px;
  text-decoration: none;
  transition: background-color 0.16s var(--ease);
}

.page-contact .next-list a:hover,
.page-contact .next-list a:focus-visible {
  background: var(--grass);
}

.page-contact .next-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--live);
}

.page-contact .next-text {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-contact .pace-row {
    grid-template-columns: minmax(0, 10em) minmax(0, 1fr);
    gap: 0 20px;
    align-items: baseline;
  }
}

@media (min-width: 760px) {
  .page-contact .check-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 38px;
    align-items: start;
  }

  .page-contact .next-list a {
    grid-template-columns: minmax(0, 9.5em) minmax(0, 1fr);
    gap: 0 18px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .partner-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-fold {
    grid-template-columns: minmax(320px, 400px) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 72px);
    align-items: start;
    margin-top: 34px;
  }

  .page-contact .contact-board {
    position: sticky;
    top: 92px;
    min-height: 600px;
  }
}