.page-contact {
  --contact-rule: 1px solid var(--line-dark);
  --contact-rule-paper: 1px solid var(--line-paper);
  background: var(--ink);
  color: var(--paper);
}

.page-contact .contact-crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-dark);
}

.page-contact .breadcrumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

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

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(44px, 6vw, 84px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-hero__copy h1 {
  margin: 10px 0 16px;
  color: var(--white);
}

.page-contact .contact-hero__copy .lead {
  margin: 0;
  max-width: 52ch;
  color: var(--mist);
}

/* 渠道列表 */
.page-contact .contact-channels {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  border-top: var(--contact-rule);
}

.page-contact .channel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 16px 0 18px 14px;
  border-bottom: var(--contact-rule);
  transition: background-color 200ms var(--ease);
}

.page-contact .channel:hover {
  background: linear-gradient(90deg, rgba(61, 242, 196, 0.06), transparent 62%);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 2px;
  height: 16px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 200ms var(--ease);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  transform: scaleY(1);
}

.page-contact .channel__label {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-contact .channel__name {
  margin: 0 0 4px;
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--white);
}

.page-contact .channel__value {
  margin: 0 0 8px;
  font-family: var(--ff-mono);
  font-size: clamp(0.95rem, 2.4vw, 1.15rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--paper);
  word-break: break-word;
  cursor: copy;
  -webkit-user-select: all;
  user-select: all;
}

.page-contact .channel__desc {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .channel__meta {
  margin: 10px 0 0;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-contact .contact-hint {
  margin: 14px 0 0;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  border: var(--contact-rule);
  border-radius: var(--radius);
  background: var(--ink-2);
  overflow: hidden;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.36);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-hero__media .media__caption {
  padding: 10px 14px;
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }

  .page-contact .channel {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 6px 16px;
    padding-left: 16px;
  }

  .page-contact .channel__label {
    padding-top: 6px;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    right: 8px;
    width: 1px;
    background: repeating-linear-gradient(
      to bottom,
      var(--line-dark) 0 6px,
      transparent 6px 16px
    );
  }
}

/* 咨询材料清单 */
.page-contact .contact-prep__grid {
  display: grid;
  gap: clamp(26px, 4vw, 56px);
}

.page-contact .contact-prep__intro .h-section {
  margin: 8px 0 16px;
  color: var(--paper-ink);
}

.page-contact .contact-prep__intro .prose {
  margin: 0;
  color: var(--paper-ink);
  opacity: 0.86;
}

.page-contact .contact-prep__note {
  margin: 16px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--teal);
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-ink);
  opacity: 0.78;
}

.page-contact .contact-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--contact-rule-paper);
}

.page-contact .check {
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 6px 12px;
  align-items: start;
  padding: 15px 4px;
  border-bottom: var(--contact-rule-paper);
  cursor: pointer;
  transition: background-color 180ms var(--ease);
}

.page-contact .check:hover {
  background: rgba(14, 107, 88, 0.07);
}

.page-contact .check__input {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  margin: 4px 0 0;
  border: 1px solid rgba(18, 32, 28, 0.55);
  border-radius: 2px;
  background: transparent;
  position: relative;
  cursor: pointer;
  flex: none;
}

.page-contact .check__input:checked {
  background: var(--teal);
  border-color: var(--teal);
}

.page-contact .check__input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid var(--paper);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .check__input:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-contact .check__no {
  display: grid;
  grid-template-columns: 12px auto;
  gap: 6px;
  align-items: center;
  padding-top: 3px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-contact .check__no::before {
  content: "";
  width: 12px;
  height: 1px;
  background: var(--teal);
}

.page-contact .check__text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--paper-ink);
  transition: opacity 180ms var(--ease);
}

.page-contact .check:has(.check__input:checked) .check__text {
  opacity: 0.6;
}

@media (min-width: 900px) {
  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
    align-items: start;
  }

  .page-contact .contact-prep__intro {
    position: sticky;
    top: 96px;
  }
}

/* 响应时间 */
.page-contact .contact-response {
  position: relative;
}

.page-contact .response-head {
  max-width: 66ch;
}

.page-contact .response-head .h-section {
  margin: 8px 0 16px;
  color: var(--white);
}

.page-contact .response-head .prose {
  margin: 0;
  color: var(--mist);
}

.page-contact .response-stats {
  list-style: none;
  display: grid;
  gap: 1px;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  background: var(--line-dark);
  border: var(--contact-rule);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .stat {
  padding: 24px 20px;
  background: var(--ink-2);
}

.page-contact .stat__num {
  display: block;
  font-family: var(--ff-mono);
  font-size: clamp(1.6rem, 4vw, 2.35rem);
  line-height: 1.1;
  color: var(--cyan);
  letter-spacing: -0.01em;
}

.page-contact .stat__label {
  margin: 10px 0 0;
  font-size: 14px;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .stat__note {
  margin: 5px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .response-tail {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .response-tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-contact .response-tail a:hover {
  color: var(--white);
  border-bottom-color: var(--white);
}

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

/* 反馈与合作 */
.page-contact .contact-feedback__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-feedback .h-section {
  margin: 8px 0 4px;
  color: var(--paper-ink);
}

.page-contact .feedback-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .feedback-item {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-top: var(--contact-rule-paper);
}

.page-contact .feedback-item__title {
  margin: 0;
  font-family: var(--ff-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--teal);
}

.page-contact .feedback-item__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-ink);
  opacity: 0.88;
}

.page-contact .contact-feedback__media {
  margin: 0;
  border: var(--contact-rule-paper);
  border-radius: var(--radius);
  background: #E7E1D5;
  overflow: hidden;
}

.page-contact .contact-feedback__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.page-contact .contact-feedback__media .media__caption {
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: rgba(18, 32, 28, 0.62);
  border-top: var(--contact-rule-paper);
}

@media (min-width: 900px) {
  .page-contact .contact-feedback__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }
}

/* 备案条带 */
.page-contact .contact-band {
  padding: clamp(28px, 4vw, 44px) 0;
  background: var(--ink-2);
  border-top: var(--contact-rule);
  border-bottom: var(--contact-rule);
}

.page-contact .band-inner {
  display: grid;
  gap: 12px;
}

.page-contact .band-title {
  margin: 0;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-contact .band-line {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.14em;
  color: var(--paper);
}

.page-contact .band-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 4px 0 0;
  padding: 0;
  font-size: 13px;
}

.page-contact .band-links a {
  color: var(--mist);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .check,
  .page-contact .check__text,
  .page-contact .band-links a {
    transition: none;
  }
}