/* ===== 联系与对接 · 页面专属样式（作用域 .page-contact） ===== */

.page-contact {
  --cc-gap: clamp(18px, 2.6vw, 30px);
  --cc-sec-y: clamp(44px, 7vw, 92px);
  background: var(--c-ink);
  color: var(--c-text);
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-contact .cc-sec {
  padding-block: var(--cc-sec-y);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumbs {
  background: var(--c-tactical);
  border-bottom: 1px solid var(--c-line);
}

.page-contact .breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding-block: 14px;
  list-style: none;
}

.page-contact .breadcrumbs__item {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-sage);
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--c-line-strong);
}

.page-contact .breadcrumbs__link {
  color: var(--c-sage);
  text-decoration: none;
}

.page-contact .breadcrumbs__link:hover,
.page-contact .breadcrumbs__link:focus-visible {
  color: var(--c-cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .cc-hero {
  padding-top: clamp(28px, 4vw, 54px);
}

.page-contact .cc-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 52px);
}

.page-contact .cc-hero__lead h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 5.8vw, 4rem);
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--c-white);
}

.page-contact .cc-hero__lead .lead {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--c-text-dim);
}

.page-contact .cc-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

@media (min-width: 900px) {
  .page-contact .cc-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 5vw, 76px);
  }
}

/* ---------- 区块标题通用 ---------- */
.page-contact .cc-channels__head h2,
.page-contact .cc-mail__head h2,
.page-contact .cc-flow__head h2,
.page-contact .cc-feedback__head h2,
.page-contact .cc-scope__body h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.2vw, 2.5rem);
  line-height: 1.14;
  letter-spacing: 0.01em;
  color: var(--c-white);
}

.page-contact .cc-channels__sub,
.page-contact .cc-mail__sub,
.page-contact .cc-flow__sub,
.page-contact .cc-feedback__sub {
  margin: 14px 0 0;
  max-width: 52em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text-dim);
}

/* ---------- 三条通道大卡片 ---------- */
.page-contact .channels {
  margin: clamp(26px, 4vw, 46px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
}

@media (min-width: 780px) {
  .page-contact .channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 2.8vw, 34px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, var(--c-tactical) 0%, var(--c-surface) 100%);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--c-moss);
}

.page-contact .channel-card--mail::before { background: var(--c-signal); }
.page-contact .channel-card--phone::before { background: var(--c-cyan); }
.page-contact .channel-card--addr::before { background: var(--c-sage); }

.page-contact .channel-card:hover {
  border-color: var(--c-line-strong);
  transform: translateY(-2px);
}

.page-contact .channel-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-sage);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.7vw, 1.28rem);
  line-height: 1.45;
  color: var(--c-white);
  word-break: break-word;
  overflow-wrap: anywhere;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .channel-card__value--addr {
  font-size: clamp(0.95rem, 1.35vw, 1.06rem);
  line-height: 1.65;
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text);
}

.page-contact .channel-card__note {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-sage);
}

/* ---------- 邮件建议（窄栏） ---------- */
.page-contact .cc-mail {
  border-top: 1px solid var(--c-line);
}

.page-contact .cc-mail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 56px);
}

@media (min-width: 900px) {
  .page-contact .cc-mail__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-contact .cc-mail__sla {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 22px 0 0;
  padding: 13px 18px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-cyan);
  border-radius: var(--radius-sm);
  background: rgba(22, 38, 26, 0.5);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-dim);
}

.page-contact .cc-mail__sla .status-dot {
  flex: none;
  margin-top: 6px;
}

.page-contact .mail-points {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: mp;
  display: grid;
  gap: 16px;
}

.page-contact .mail-points > li {
  position: relative;
  padding-left: 52px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-contact .mail-points > li::before {
  counter-increment: mp;
  content: "0" counter(mp);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 3px 9px;
  border: 1px solid var(--c-line-strong);
  border-radius: var(--pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

.page-contact .mail-points strong {
  color: var(--c-white);
  font-weight: 600;
}

/* ---------- 四步对接 ---------- */
.page-contact .cc-flow {
  border-block: 1px solid var(--c-line);
  background: linear-gradient(180deg, var(--c-tactical) 0%, var(--c-ink) 100%);
}

.page-contact .flow {
  margin: clamp(28px, 4vw, 50px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
}

@media (min-width: 880px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .flow__step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.4vw, 28px);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: rgba(10, 14, 11, 0.62);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-contact .flow__step--start {
  border-color: rgba(255, 106, 26, 0.42);
  background: rgba(22, 38, 26, 0.72);
}

.page-contact .flow__step:has(details[open]) {
  border-color: var(--c-signal);
}

.page-contact .flow__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
}

.page-contact .flow__step--start .flow__num {
  color: var(--c-signal);
}

.page-contact .flow__title {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: 0.03em;
  color: var(--c-white);
}

.page-contact .flow__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-text-dim);
}

.page-contact .flow__more {
  margin-top: auto;
  padding-top: 4px;
  border-top: 1px solid var(--c-line);
}

.page-contact .flow__more summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

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

.page-contact .flow__more summary::after {
  content: "+";
  margin-left: auto;
  font-size: 16px;
  line-height: 1;
  color: var(--c-sage);
}

.page-contact .flow__more[open] summary::after {
  content: "\2013";
}

.page-contact .flow__more summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

.page-contact .flow__more p {
  margin: 2px 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-dim);
}

/* ---------- 反馈类型表格 ---------- */
.page-contact .cc-feedback {
  border-top: 1px solid var(--c-line);
}

.page-contact .data-table__scroll {
  margin-top: clamp(24px, 3.4vw, 40px);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-contact .cc-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-contact .cc-table th,
.page-contact .cc-table td {
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
  line-height: 1.72;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .cc-table thead th {
  background: var(--c-moss);
  color: var(--c-white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-bottom: none;
  white-space: nowrap;
}

.page-contact .cc-table tbody tr:nth-child(even) {
  background: rgba(22, 38, 26, 0.45);
}

.page-contact .cc-table tbody th {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  color: var(--c-white);
}

.page-contact .cc-table tbody td:last-child {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
  white-space: nowrap;
}

/* ---------- 服务范围 ---------- */
.page-contact .cc-scope__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 60px);
}

@media (min-width: 940px) {
  .page-contact .cc-scope__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-contact .cc-scope__body > p {
  margin: 16px 0 0;
  max-width: 46em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text);
}

.page-contact .cc-scope__facts {
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 620px) {
  .page-contact .cc-scope__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .cc-scope__facts li {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-sm);
  background: var(--c-surface);
}

.page-contact .cc-scope__facts .num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.4vw, 1.7rem);
  line-height: 1;
  color: var(--c-cyan);
}

.page-contact .cc-scope__facts li > span:last-child {
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-sage);
}

.page-contact .cc-scope__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .cc-scope__side {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-contact .cc-scope__side .media-frame {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--c-line);
}

.page-contact .cc-scope__meta {
  display: grid;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-md);
  background: var(--c-surface);
  overflow: hidden;
}

.page-contact .cc-scope__meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin: 0;
  padding: 13px 16px;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-text);
}

.page-contact .cc-scope__meta-row:last-child {
  border-bottom: none;
}

.page-contact .cc-scope__meta-key {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-sage);
}

.page-contact .cc-scope__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-sage);
}

.page-contact .cc-scope__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 224, 192, 0.4);
}

.page-contact .cc-scope__note a:hover,
.page-contact .cc-scope__note a:focus-visible {
  color: var(--c-white);
}

/* ---------- 焦点与窄屏收紧 ---------- */
.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
}

@media (max-width: 480px) {
  .page-contact .channel-card {
    padding: 20px;
  }

  .page-contact .mail-points > li {
    padding-left: 44px;
  }

  .page-contact .cc-scope__meta-row {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .flow__step {
    transition: none;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}