.page-contact {
  --paper-accent: #0B6B5C;
  --paper-accent-2: #B25A17;
  display: block;
  padding-bottom: clamp(56px, 9vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumb-row {
  padding-top: clamp(88px, 13vw, 132px);
}

.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--silver-300);
}

.page-contact .crumb-sep {
  color: var(--line-600);
}

.page-contact .crumbs a {
  color: var(--silver-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--d-1) var(--ease), border-color var(--d-1) var(--ease);
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-contact .crumbs [aria-current="page"] {
  color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  margin-top: clamp(16px, 3vw, 28px);
  min-height: clamp(380px, 62vw, 540px);
  display: flex;
  align-items: flex-end;
  background: var(--night-800);
  border-top: 1px solid var(--line-600);
  border-bottom: 1px solid var(--line-600);
  overflow: hidden;
}

.page-contact .hero-media {
  position: absolute;
  inset: 0;
  margin: 0;
}

.page-contact .hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55) contrast(1.18) brightness(0.5);
}

.page-contact .hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 23, 19, 0.28) 0%, rgba(6, 23, 19, 0.86) 70%, var(--ink-900) 100%),
    linear-gradient(90deg, rgba(6, 23, 19, 0.82) 0%, rgba(6, 23, 19, 0) 64%);
}

.page-contact .hero-inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(30px, 5vw, 56px);
}

.page-contact .hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 12px;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-400);
  background: rgba(12, 33, 54, 0.72);
  border: 1px solid var(--line-600);
  border-radius: var(--r-pill);
}

.page-contact h1 {
  margin: 18px 0 0;
  max-width: 20em;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper-50);
  text-align: left;
}

.page-contact .lede {
  margin: 16px 0 0;
  max-width: 44rem;
  font-size: clamp(0.95rem, 1.1vw, 1.05rem);
  line-height: 1.7;
  color: var(--paper-200);
}

.page-contact .hero-meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 0.82rem;
  color: var(--silver-300);
}

.page-contact .hero-meta li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border: 1px solid var(--cyan-400);
  transform: rotate(45deg);
}

/* ---------- 通用章节头 ---------- */
.page-contact .board {
  margin-top: clamp(52px, 8vw, 92px);
}

.page-contact .board-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 5vw, 40px);
}

.page-contact .sec-head {
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-contact .sec-index {
  margin: 0 0 8px;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-contact .sec-head h2 {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper-50);
  text-align: left;
}

.page-contact .sec-lede {
  margin: 10px 0 0;
  max-width: 34rem;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--silver-300);
}

/* ---------- 渠道卡 ---------- */
.page-contact .channel-col {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--night-800);
  border: 1px solid var(--line-600);
  border-left-width: 3px;
  border-radius: var(--r-md);
  transition: transform var(--d-1) var(--ease), background-color var(--d-1) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateX(4px);
  background: #0F2A44;
}

.page-contact .channel-card--mail {
  border-left-color: var(--cyan-400);
}

.page-contact .channel-card--phone {
  border-left-color: var(--amber-500);
}

.page-contact .channel-card--addr {
  border-left-color: var(--grass-500);
}

.page-contact .channel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.page-contact .channel-no {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  color: var(--silver-300);
  opacity: 0.6;
}

.page-contact .channel-card h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--paper-50);
}

.page-contact .channel-value {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: clamp(0.95rem, 1.6vw, 1.12rem);
  line-height: 1.45;
  letter-spacing: 0.01em;
  color: var(--cyan-400);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-card--phone .channel-value {
  color: var(--amber-500);
}

.page-contact .channel-card--addr .channel-value {
  font-family: var(--font-display);
  font-size: 0.98rem;
  color: var(--paper-50);
  word-break: normal;
}

.page-contact .channel-use {
  margin: 0 0 14px;
  font-size: 0.86rem;
  line-height: 1.68;
  color: var(--paper-200);
}

.page-contact .channel-spec {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-600);
  display: grid;
  gap: 8px;
}

.page-contact .channel-spec > div {
  display: grid;
  grid-template-columns: 5.4em minmax(0, 1fr);
  gap: 10px;
  font-size: 0.8rem;
  line-height: 1.6;
}

.page-contact .channel-spec dt {
  color: var(--silver-300);
  opacity: 0.78;
}

.page-contact .channel-spec dd {
  margin: 0;
  color: var(--paper-200);
}

/* ---------- 纠错面板 ---------- */
.page-contact .fix-col {
  align-self: start;
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--night-800);
  border: 1px solid var(--line-600);
  border-radius: var(--r-md);
}

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

.page-contact .check-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px;
  background: rgba(6, 23, 19, 0.55);
  border: 1px solid var(--line-600);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: border-color var(--d-1) var(--ease), background-color var(--d-1) var(--ease);
}

.page-contact .check-item:hover {
  border-color: var(--cyan-400);
}

.page-contact .check-item:has(input:checked) {
  border-color: var(--cyan-400);
  background: rgba(56, 242, 214, 0.09);
}

.page-contact .check-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--cyan-400);
  cursor: pointer;
}

.page-contact .check-body {
  display: block;
  min-width: 0;
}

.page-contact .check-body strong {
  display: block;
  margin-bottom: 4px;
  font-size: 0.9rem;
  color: var(--paper-50);
}

.page-contact .check-body > span {
  display: block;
  font-size: 0.82rem;
  line-height: 1.62;
  color: var(--paper-200);
}

.page-contact .fix-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line-600);
  font-size: 0.82rem;
  line-height: 1.72;
  color: var(--silver-300);
}

.page-contact .fix-note a,
.page-contact .reply-note a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 242, 214, 0.45);
}

.page-contact .fix-note a:hover,
.page-contact .reply-note a:hover {
  border-bottom-color: var(--cyan-400);
}

.page-contact .fix-visual {
  margin: clamp(20px, 3vw, 26px) 0 0;
}

.page-contact .fix-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--r-sm);
  filter: saturate(0.6) contrast(1.1) brightness(0.85);
}

/* ---------- 合作主题带 ---------- */
.page-contact .coop {
  position: relative;
  margin-top: clamp(56px, 8vw, 100px);
  padding-block: clamp(40px, 6vw, 72px);
  background: var(--paper-50);
  color: var(--ink-900);
  border-top: 1px solid var(--paper-200);
  border-bottom: 1px solid var(--paper-200);
}

.page-contact .coop::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--amber-500) 0%, var(--paper-200) 78%);
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
}

.page-contact .coop .sec-index {
  color: var(--paper-accent-2);
}

.page-contact .coop h2 {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 2.6vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink-900);
  text-align: left;
}

.page-contact .coop-copy p {
  margin: 0 0 12px;
  max-width: 42rem;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #23372F;
}

.page-contact .coop-side {
  padding: clamp(18px, 2.4vw, 24px);
  background: var(--paper-200);
  border: 1px solid #C9C1AD;
  border-radius: var(--r-md);
}

.page-contact .coop-side-title {
  margin: 0 0 14px;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--paper-accent);
}

.page-contact .coop-list {
  list-style: none;
  counter-reset: coop;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.page-contact .coop-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid #C9C1AD;
  font-size: 0.86rem;
  line-height: 1.6;
  color: #23372F;
}

.page-contact .coop-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .coop-list .num {
  font-size: 0.82rem;
  color: var(--paper-accent-2);
}

/* ---------- 回复时段时间轴 ---------- */
.page-contact .chapter {
  margin-top: clamp(52px, 8vw, 96px);
}

.page-contact .reply-line {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-600);
}

.page-contact .reply-item {
  position: relative;
  padding: 20px 0 20px 26px;
  border-bottom: 1px solid var(--line-600);
}

.page-contact .reply-dot {
  position: absolute;
  left: 0;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 1px solid var(--cyan-400);
  transform: rotate(45deg);
}

.page-contact .reply-time {
  margin: 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  letter-spacing: 0.02em;
  color: var(--cyan-400);
}

.page-contact .reply-text {
  margin: 6px 0 0;
  max-width: 40rem;
  font-size: 0.86rem;
  line-height: 1.68;
  color: var(--paper-200);
}

.page-contact .reply-note {
  margin: 22px 0 0;
  max-width: 52rem;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--silver-300);
}

/* ---------- 信息使用 ---------- */
.page-contact .use-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-contact .use-copy p {
  margin: 0 0 12px;
  max-width: 42rem;
  font-size: 0.88rem;
  line-height: 1.75;
  color: var(--paper-200);
}

.page-contact .use-reg {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-600);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--silver-300);
}

.page-contact .use-links {
  display: grid;
  gap: 12px;
}

.page-contact .use-card {
  display: block;
  padding: clamp(16px, 2.2vw, 20px);
  background: var(--night-800);
  border: 1px solid var(--line-600);
  border-left: 3px solid var(--line-600);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: border-left-color var(--d-1) var(--ease), transform var(--d-1) var(--ease), background-color var(--d-1) var(--ease);
}

.page-contact .use-card:hover,
.page-contact .use-card:focus-visible {
  transform: translateX(4px);
  border-left-color: var(--cyan-400);
  background: #0F2A44;
}

.page-contact .use-card-k {
  display: block;
  margin-bottom: 6px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--paper-50);
}

.page-contact .use-card-v {
  display: block;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--silver-300);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 900px) {
  .page-contact .board-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .use-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .page-contact .reply-line {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    border-bottom: 1px solid var(--line-600);
  }

  .page-contact .reply-item {
    padding: 30px 20px 26px 22px;
    border-bottom: 0;
    border-right: 1px solid var(--line-600);
  }

  .page-contact .reply-item:last-child {
    border-right: 0;
  }

  .page-contact .reply-dot {
    top: 0;
    left: 22px;
    transform: translateY(-50%) rotate(45deg);
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 1440px) {
  .page-contact .contact-hero {
    min-height: 600px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .use-card,
  .page-contact .crumbs a {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within,
  .page-contact .use-card:hover,
  .page-contact .use-card:focus-visible {
    transform: none;
  }
}