.page-contact {
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: 18px 0 6px;
}

.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-contact .breadcrumb__link {
  color: var(--muted);
  text-decoration: none;
  transition: color .18s ease;
}

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

.page-contact .breadcrumb__current {
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(16px, 3vw, 28px) 0 clamp(28px, 5vw, 48px);
}

.page-contact .contact-hero__frame {
  position: relative;
  padding: clamp(22px, 4vw, 44px);
  border: 1px solid var(--line);
  background:
    radial-gradient(circle at 84% 10%, rgba(47, 242, 207, .10), transparent 55%),
    radial-gradient(circle at 6% 96%, rgba(138, 107, 255, .13), transparent 58%),
    var(--panel);
}

.page-contact .contact-hero__frame::before,
.page-contact .contact-hero__frame::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid var(--cyan);
  pointer-events: none;
}

.page-contact .contact-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .contact-hero__frame::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 5.6vw, 58px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  max-width: 36em;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .media-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
  aspect-ratio: 16 / 9;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(26px, 4vw, 40px);
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .contact-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink);
}

.page-contact .contact-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1;
  font-weight: 700;
  color: var(--text);
}

.page-contact .contact-hero__stats .stat__value--cyan {
  color: var(--cyan);
}

.page-contact .contact-hero__stats .stat__value--orange {
  color: var(--orange);
}

.page-contact .contact-hero__stats .stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 通用章节 ---------- */
.page-contact .section {
  padding: clamp(36px, 6vw, 68px) 0;
}

.page-contact .section__head {
  max-width: 46em;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section__title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3.4vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ---------- 通道标签 ---------- */
.page-contact .contact-channels__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .channel-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-contact .channel-tabs__bar {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.page-contact .channel-tabs__label {
  flex: 0 0 auto;
  padding: 11px 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color .18s ease, border-color .18s ease, background .18s ease;
}

.page-contact .channel-tabs__label:hover {
  color: var(--text);
  border-color: var(--cyan);
}

.page-contact #ch-mail:focus-visible ~ .channel-tabs__bar [for="ch-mail"],
.page-contact #ch-phone:focus-visible ~ .channel-tabs__bar [for="ch-phone"],
.page-contact #ch-data:focus-visible ~ .channel-tabs__bar [for="ch-data"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact #ch-mail:checked ~ .channel-tabs__bar [for="ch-mail"],
.page-contact #ch-phone:checked ~ .channel-tabs__bar [for="ch-phone"],
.page-contact #ch-data:checked ~ .channel-tabs__bar [for="ch-data"] {
  color: var(--ink);
  border-color: var(--cyan);
  background: var(--cyan);
}

.page-contact .channel-tabs__panels {
  margin-top: 18px;
}

.page-contact .channel-panel {
  display: none;
  padding: clamp(20px, 3.4vw, 34px);
  border: 1px solid var(--line);
  background: var(--panel);
  position: relative;
}

.page-contact .channel-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--cyan);
}

.page-contact #ch-mail:checked ~ .channel-tabs__panels [data-ch="mail"],
.page-contact #ch-phone:checked ~ .channel-tabs__panels [data-ch="phone"],
.page-contact #ch-data:checked ~ .channel-tabs__panels [data-ch="data"] {
  display: block;
  animation: contactPanelIn .22s ease-out;
}

@keyframes contactPanelIn {
  from {
    opacity: 0;
    transform: translateX(10px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.page-contact .channel-panel__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-contact .channel-panel__title {
  margin: 10px 0 0;
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .channel-panel__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .channel-panel__list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .channel-panel__list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .channel-panel__list li::before {
  content: "";
  position: absolute;
  top: 9px;
  left: 0;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .channel-panel__link {
  display: inline-block;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 2px;
  transition: color .18s ease, border-color .18s ease;
}

.page-contact .channel-panel__link:hover,
.page-contact .channel-panel__link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

/* ---------- 邮件支持 ---------- */
.page-contact .contact-mail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .contact-mail__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  word-break: break-word;
}

.page-contact .contact-mail__steps {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .mail-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  background: var(--panel);
}

.page-contact .mail-step__no {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--cyan);
}

.page-contact .mail-step__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .mail-step__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .contact-mail__note {
  display: grid;
  gap: 12px;
  margin-top: 24px;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  background: var(--panel-2);
}

.page-contact .contact-mail__note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .contact-mail__figure {
  align-self: start;
}

.page-contact .contact-mail__figure.media-frame {
  aspect-ratio: 2 / 1;
}

/* ---------- 电话 ---------- */
.page-contact .contact-phone__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.6vw, 40px);
  padding: clamp(22px, 3.6vw, 40px);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(47, 242, 207, .09), transparent 46%),
    var(--panel);
}

.page-contact .contact-phone__text {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-phone__card {
  display: grid;
  gap: 8px;
  align-content: center;
  padding: 22px;
  border: 1px dashed var(--line);
  background: var(--ink);
}

.page-contact .contact-phone__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-phone__number {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--cyan);
  letter-spacing: 0.02em;
  user-select: all;
  word-break: break-all;
}

.page-contact .contact-phone__hours {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-contact .contact-phone__hint {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 自助排查 ---------- */
.page-contact .contact-check__lead {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .check-list {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .check-item {
  display: grid;
  grid-template-columns: 24px 34px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 18px;
  background: var(--panel);
  cursor: pointer;
  transition: background .18s ease;
}

.page-contact .check-item:hover {
  background: var(--panel-2);
}

.page-contact .check-item__box {
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: #2FF2CF;
  cursor: pointer;
}

.page-contact .check-item__no {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.7;
  color: var(--orange);
}

.page-contact .check-item__body {
  display: grid;
  gap: 6px;
}

.page-contact .check-item__title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

.page-contact .check-item__text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .check-item__box:checked ~ .check-item__body .check-item__title {
  color: var(--cyan);
}

.page-contact .check-item__box:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .check-list__footer {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  word-break: break-word;
}

/* ---------- 纠错与合作 ---------- */
.page-contact .correct-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .correct-card {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  background: var(--panel);
  transition: border-color .18s ease, transform .18s ease;
}

.page-contact .correct-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}

.page-contact .correct-card--data {
  border-top: 3px solid var(--orange);
}

.page-contact .correct-card--coop {
  border-top: 3px solid var(--violet);
}

.page-contact .correct-card--other {
  border-top: 3px solid var(--cyan);
}

.page-contact .correct-card__title {
  margin: 16px 0 0;
  font-size: clamp(17px, 2.1vw, 21px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .correct-card__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .correct-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .correct-card__list li::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  width: 4px;
  height: 4px;
  background: var(--line);
}

.page-contact .correct-card--data .correct-card__list li::before {
  background: var(--orange);
}

.page-contact .correct-card--coop .correct-card__list li::before {
  background: var(--violet);
}

.page-contact .correct-card--other .correct-card__list li::before {
  background: var(--cyan);
}

.page-contact .correct-card__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 站点信息 ---------- */
.page-contact .region-board {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: clamp(22px, 3.6vw, 40px);
}

.page-contact .region-board__head {
  margin-bottom: 24px;
}

.page-contact .region-board__list {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .region-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink);
}

.page-contact .region-row__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .region-row__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text);
}

.page-contact .region-row__val--mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  user-select: all;
  word-break: break-all;
}

.page-contact .region-board__foot {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .region-board__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color .18s ease;
}

.page-contact .region-board__foot a:hover,
.page-contact .region-board__foot a:focus-visible {
  border-color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .correct-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .correct-card--other {
    grid-column: 1 / -1;
  }

  .page-contact .region-row {
    grid-template-columns: 160px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  }

  .page-contact .contact-mail__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-phone__panel {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-contact .channel-panel {
    padding-left: clamp(28px, 3.4vw, 44px);
  }
}

@media (min-width: 1080px) {
  .page-contact .correct-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .correct-card--other {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-panel,
  .page-contact .correct-card,
  .page-contact .channel-tabs__label,
  .page-contact .check-item {
    animation: none !important;
    transition: none !important;
  }
}