.page-contact {
  --contact-slice: 8deg;
  --contact-panel: rgba(16, 54, 44, 0.55);
  position: relative;
  overflow-x: clip;
}

.page-contact .contact-shell {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-contact .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(20px, 4vw, 40px) clamp(40px, 6vw, 76px);
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -12%;
  left: calc(var(--gutter) * -1);
  width: min(720px, 92%);
  height: clamp(280px, 48vw, 500px);
  background: linear-gradient(128deg, var(--ink-1) 0%, var(--ink-2) 58%, rgba(16, 54, 44, 0.15) 100%);
  clip-path: polygon(0 0, 100% 6%, 90% 100%, 0 86%);
  pointer-events: none;
}

.page-contact .hero-mark {
  position: absolute;
  z-index: 0;
  right: calc(var(--gutter) * -0.4);
  bottom: -0.08em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(5.5rem, 23vw, 14rem);
  line-height: 0.75;
  letter-spacing: -0.04em;
  color: rgba(57, 245, 208, 0.07);
  -webkit-text-stroke: 1px rgba(57, 245, 208, 0.26);
  pointer-events: none;
  user-select: none;
}

.page-contact .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.2rem, 6.6vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.01em;
  margin: 0.35em 0 0.5em;
  color: var(--ice);
  max-width: 17ch;
}

.page-contact .lead {
  color: var(--mist);
  line-height: 1.75;
  max-width: 56ch;
}

.page-contact .route-list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .route-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .route-key {
  color: var(--cyan);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  padding-top: 0.4em;
}

.page-contact .route-list strong {
  color: var(--ice);
  font-weight: 600;
}

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

.page-contact .hero-media {
  position: relative;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
}

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

/* ---------- 渠道卡 ---------- */
.page-contact .channels {
  padding-block: clamp(36px, 6vw, 72px);
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.4vw, 28px);
  padding-top: clamp(24px, 2.8vw, 32px);
  background: linear-gradient(160deg, var(--ink-1), var(--ink-0));
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 58px;
  height: 3px;
  border-radius: 0 3px 0 0;
}

.page-contact .channel-card--cyan::before {
  background: var(--cyan);
}

.page-contact .channel-card--orange::before {
  background: var(--orange);
}

.page-contact .channel-card--yellow::before {
  background: var(--yellow);
}

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

.page-contact .channel-no {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--mist);
  margin: 0;
}

.page-contact .channel-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.01em;
  color: var(--ice);
  margin: 0;
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ice);
  word-break: break-word;
  margin: 0;
}

.page-contact .channel-desc {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--mist);
  margin: 0;
}

.page-contact .channel-card .copy-btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ---------- 反馈清单 ---------- */
.page-contact .feedback {
  padding-block: clamp(36px, 6vw, 80px);
}

.page-contact .feedback-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .checklist {
  list-style: none;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .checklist label {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: var(--contact-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .checklist label:hover {
  border-color: rgba(57, 245, 208, 0.55);
}

.page-contact .checklist input {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 0.25em 0 0;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--ink-0);
  display: grid;
  place-content: center;
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .checklist input::after {
  content: "";
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--ink-0);
  border-bottom: 2px solid var(--ink-0);
  transform: rotate(-45deg) scale(0);
  transition: transform 160ms var(--ease);
}

.page-contact .checklist input:checked {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .checklist input:checked::after {
  transform: rotate(-45deg) scale(1);
}

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

.page-contact .check-no {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 0.3em;
}

.page-contact .check-text {
  font-size: 0.93rem;
  line-height: 1.65;
  color: var(--ice);
}

.page-contact .note {
  color: var(--mist);
  font-size: 0.85rem;
  line-height: 1.7;
  margin-top: 14px;
}

.page-contact .feedback-media {
  aspect-ratio: 5 / 4;
  border: 1px solid var(--line);
}

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

/* ---------- 商务合作 ---------- */
.page-contact .cooperation {
  padding: clamp(26px, 4vw, 52px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(255, 106, 42, 0.16), transparent 58%),
    linear-gradient(170deg, var(--ink-1), var(--ink-0));
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.5vw, 44px);
  align-items: start;
}

.page-contact .coop-intro .btn {
  margin-top: clamp(16px, 2vw, 22px);
}

.page-contact .coop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .coop-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .coop-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .coop-no {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--orange);
  padding-top: 0.25em;
}

.page-contact .coop-list strong {
  color: var(--ice);
  font-weight: 600;
}

/* ---------- 服务时间 ---------- */
.page-contact .service-time {
  padding-block: clamp(36px, 5vw, 64px);
}

.page-contact .time-panel {
  position: relative;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(57, 245, 208, 0.14), transparent 62%),
    var(--ink-1);
}

.page-contact .time-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.2vw, 2.7rem);
  line-height: 1.15;
  color: var(--ice);
  margin: 0.3em 0 0.55em;
}

.page-contact .time-title .mono {
  color: var(--yellow);
  letter-spacing: 0.01em;
}

.page-contact .time-text {
  color: var(--mist);
  line-height: 1.8;
  max-width: 62ch;
  margin: 0;
}

.page-contact .time-note {
  color: var(--mist);
  font-size: 0.9rem;
  line-height: 1.75;
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .time-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .time-note a:hover {
  color: var(--ice);
}

.page-contact .time-note a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 备案与法律 ---------- */
.page-contact .legal-strip {
  padding-block: clamp(24px, 3.5vw, 40px) clamp(40px, 6vw, 72px);
  border-top: 1px solid var(--line);
}

.page-contact .legal-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--ice);
  margin: 0 0 10px;
  letter-spacing: 0.01em;
}

.page-contact .legal-icp {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  color: var(--yellow);
  margin: 0 0 8px;
}

.page-contact .legal-text {
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--mist);
  margin: 0;
  max-width: 64ch;
}

.page-contact .legal-text a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .legal-text a:hover {
  color: var(--ice);
}

.page-contact .legal-text a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.8fr);
    align-items: center;
  }

  .page-contact .feedback-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.72fr);
  }

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }
}

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

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