.page-contact {
  display: block;
  background: var(--pitch-deep);
  color: var(--paper);
}

/* ---------- 区块底色节奏 ---------- */
.page-contact .band {
  padding-block: clamp(46px, 6.5vw, 92px);
  background: var(--paper);
  color: var(--ink);
}
.page-contact .band--paper {
  background: var(--paper);
  color: var(--ink);
}
.page-contact .band--soft {
  background: var(--pitch-soft);
  color: var(--ink);
}
.page-contact .band--deep {
  background: var(--pitch-mid);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  background: var(--pitch-deep);
  padding-bottom: clamp(36px, 5vw, 68px);
}
.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px 6px;
  font-size: 13px;
}
.page-contact .breadcrumbs .breadcrumb-item {
  color: var(--board-blue);
  text-decoration: none;
}
.page-contact .breadcrumbs a.breadcrumb-item {
  color: var(--grid-grey);
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}
.page-contact .breadcrumbs a.breadcrumb-item:hover,
.page-contact .breadcrumbs a.breadcrumb-item:focus-visible {
  color: var(--card-yellow);
  border-bottom-color: var(--card-red);
}
.page-contact .breadcrumbs .breadcrumb-item[aria-current="page"] {
  color: var(--card-yellow);
}
.page-contact .breadcrumb-sep {
  color: var(--line-green);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding-top: clamp(20px, 3vw, 36px);
}

.page-contact .eyebrow {
  color: var(--card-yellow);
}
.page-contact .band--paper .eyebrow,
.page-contact .band--soft .eyebrow {
  color: var(--card-red);
}

.page-contact h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 58px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .contact-hero__text {
  max-width: 36em;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--grid-grey);
}

.page-contact .contact-hero__links {
  display: grid;
  gap: 10px;
}
.page-contact .contact-link {
  display: grid;
  gap: 4px;
  padding: 14px 18px;
  border: 1px solid rgba(46, 111, 82, 0.9);
  border-radius: var(--radius-md);
  background: rgba(18, 64, 47, 0.55);
  text-decoration: none;
  color: var(--paper);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.page-contact .contact-link:hover,
.page-contact .contact-link:focus-visible {
  border-color: var(--card-yellow);
  background: rgba(255, 198, 26, 0.1);
}
.page-contact .contact-link__label {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.03em;
  color: var(--card-yellow);
}
.page-contact .contact-link__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--board-blue);
}

/* ---------- 章节头 ---------- */
.page-contact .band-head {
  max-width: 64ch;
  margin-bottom: clamp(24px, 3.6vw, 42px);
}
.page-contact .section-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: inherit;
}
.page-contact .section-note {
  max-width: 40em;
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--board-blue);
}
.page-contact .band--paper .section-note,
.page-contact .band--soft .section-note {
  color: #4a5b53;
}
.page-contact .mini-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: 0.03em;
  color: var(--pitch-deep);
}
.page-contact .prose {
  max-width: 36em;
  margin: 18px 0 0;
  font-size: 16px;
  line-height: 1.85;
}
.page-contact .band--paper .prose,
.page-contact .band--soft .prose {
  color: #33443c;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channel-shell {
  position: relative;
  isolation: isolate;
  padding: clamp(18px, 3vw, 34px);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--pitch-deep);
}
.page-contact .channel-shell__backdrop {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: 0.24;
  pointer-events: none;
}
.page-contact .channel-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(158deg, rgba(11, 46, 35, 0.74), rgba(11, 46, 35, 0.95));
  pointer-events: none;
}
.page-contact .channel-row {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}
.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(143, 166, 184, 0.34);
  border-radius: var(--radius-lg);
  background: rgba(18, 64, 47, 0.88);
  color: var(--paper);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease), transform var(--t-mid) var(--ease);
}
.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--card-yellow);
  box-shadow: 0 0 0 1px rgba(255, 198, 26, 0.4), 0 18px 40px rgba(0, 0, 0, 0.28);
}
.page-contact .channel-card__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--card-yellow);
}
.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 25px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.page-contact .channel-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--grid-grey);
}
.page-contact .channel-card__value {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.9vw, 18px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--card-yellow);
  word-break: break-all;
}
.page-contact .channel-card__value--plain {
  color: var(--paper);
  font-family: var(--font-body);
  font-weight: 600;
  word-break: normal;
}
.page-contact .channel-card__act {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: auto;
  padding-top: 8px;
}
.page-contact .channel-card__hint {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--board-blue);
}
.page-contact .channel-copy {
  border: 1px solid var(--card-yellow);
  border-radius: var(--radius-pill);
  padding: 9px 20px;
  background: var(--card-yellow);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.page-contact .channel-copy:hover,
.page-contact .channel-copy:focus-visible {
  background: transparent;
  color: var(--card-yellow);
}
.page-contact .copy-status {
  display: inline-block;
  min-height: 1em;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--card-yellow);
}

/* ---------- 纠错流程 ---------- */
.page-contact .fix-grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}
.page-contact .field-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .field-list li {
  display: grid;
  gap: 5px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--line-green);
  background: var(--paper);
}
.page-contact .field-key {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.03em;
  color: var(--pitch-deep);
}
.page-contact .field-desc {
  font-size: 14px;
  line-height: 1.75;
  color: #45564e;
}

.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .step {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid rgba(46, 111, 82, 0.3);
  border-radius: var(--radius-md);
  background: var(--paper);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.page-contact .step:hover,
.page-contact .step:focus-within {
  border-color: var(--card-yellow);
  background: #ffffff;
  box-shadow: 0 12px 26px rgba(11, 46, 35, 0.1);
}
.page-contact .step__no {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--line-green);
}
.page-contact .step:hover .step__no,
.page-contact .step:focus-within .step__no {
  color: var(--card-red);
}
.page-contact .step__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--pitch-deep);
}
.page-contact .step__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: #45564e;
}
.page-contact .fix-figure {
  margin: 18px 0 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(46, 111, 82, 0.28);
  background: var(--paper);
}
.page-contact .fix-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 订阅 ---------- */
.page-contact .sub-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}
.page-contact .sub-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-contact .sub-list li {
  display: grid;
  gap: 5px;
  padding-left: 16px;
  border-left: 2px solid var(--card-yellow);
}
.page-contact .sub-key {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.03em;
  color: var(--pitch-deep);
}
.page-contact .sub-val {
  font-size: 14.5px;
  line-height: 1.8;
  color: #45564e;
}
.page-contact .sub-points {
  display: grid;
  gap: 14px;
}
.page-contact .sub-point {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--pitch-deep);
  color: var(--paper);
}
.page-contact .sub-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--card-yellow);
  white-space: nowrap;
}
.page-contact .sub-point p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--grid-grey);
}

/* ---------- 合作 ---------- */
.page-contact .band--deep .section-note {
  color: var(--board-blue);
}
.page-contact .coop-row {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}
.page-contact .coop-card {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(143, 166, 184, 0.3);
  border-radius: var(--radius-lg);
  background: rgba(11, 46, 35, 0.55);
  transition: border-color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  border-color: var(--card-yellow);
  background: rgba(11, 46, 35, 0.8);
}
.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.03em;
  color: var(--card-yellow);
}
.page-contact .coop-card__text {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--grid-grey);
}

/* ---------- 响应节奏 ---------- */
.page-contact .sla-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}
.page-contact .sla-rows {
  display: grid;
  gap: 12px;
}
.page-contact .sla-row {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--paper);
  border-left: 3px solid var(--card-red);
}
.page-contact .sla-key {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: 0.04em;
  color: var(--pitch-deep);
}
.page-contact .sla-val {
  font-size: 14.5px;
  line-height: 1.78;
  color: #45564e;
}
.page-contact .sla-lead .btn {
  margin-top: 22px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .channel-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-contact .channel-card--phone {
    margin-top: 34px;
  }
  .page-contact .channel-shell {
    padding-bottom: calc(clamp(18px, 3vw, 34px) + 34px);
  }
  .page-contact .coop-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }
  .page-contact .coop-row > :nth-child(2) {
    margin-top: 28px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }
  .page-contact .fix-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
  .page-contact .sub-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
  .page-contact .sla-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

@media (max-width: 619px) {
  .page-contact .step {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
  }
  .page-contact .sub-point {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }
  .page-contact .channel-card__value {
    font-size: 15px;
  }
}