.page-contact {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(30, 58, 95, 0.35) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 58, 95, 0.35) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(125% 72% at 50% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(125% 72% at 50% 0%, #000 0%, transparent 72%);
}

.page-contact .breadcrumb {
  margin: 0 0 clamp(14px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(6px, 1.6vw, 18px);
  padding-bottom: clamp(32px, 5vw, 56px);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: -70px;
  right: -90px;
  width: 360px;
  height: 360px;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(circle, rgba(56, 225, 208, 0.16), transparent 68%);
}

.page-contact .contact-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

.page-contact .contact-hero__copy h1 {
  margin: 12px 0 18px;
  font-family: var(--font-narrow);
  letter-spacing: 0.04em;
}

.page-contact .contact-hero__copy .lede {
  max-width: 58ch;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-contact .contact-hero__media {
  position: relative;
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 通道卡 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 40px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 30px 22px 24px;
  background: var(--ink-2);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), transparent 72%);
}

.page-contact .channel-card:nth-child(2)::before {
  background: linear-gradient(90deg, var(--gold), transparent 72%);
}

.page-contact .channel-card:nth-child(3)::before {
  background: linear-gradient(90deg, var(--magenta), transparent 72%);
}

.page-contact .channel-card:hover {
  background: #102541;
  box-shadow: var(--glow-cyan);
}

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

.page-contact .channel-card__k {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--cream);
}

.page-contact .channel-card__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.55;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .channel-card__v--addr {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--cream);
}

.page-contact .channel-card__note {
  flex: 1;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .channel-card .copy-row {
  margin-top: 4px;
}

/* ---------- 响应节奏 ---------- */

.page-contact .resp-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  padding: clamp(24px, 3.6vw, 42px);
}

.page-contact .resp-panel__clock {
  padding-left: 18px;
  border-left: 3px solid var(--gold);
}

.page-contact .resp-panel__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 5.2vw, 46px);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--gold);
  white-space: nowrap;
}

.page-contact .resp-panel__dash {
  margin: 0 4px;
  font-weight: 400;
  color: var(--muted);
}

.page-contact .resp-panel__cap {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-contact .resp-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-narrow);
  font-size: clamp(20px, 2.5vw, 26px);
  letter-spacing: 0.04em;
  color: var(--cream);
}

.page-contact .resp-panel__body p {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
}

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

.page-contact .resp-list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.76;
  color: var(--muted);
}

.page-contact .resp-list li::before {
  content: "";
  position: absolute;
  top: 0.6em;
  left: 0;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

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

/* ---------- 反馈准备清单 ---------- */

.page-contact .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-contact .prep-figure {
  border: 1px solid var(--line);
  background: var(--ink-2);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-contact .prep-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

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

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  background: var(--ink-2);
}

.page-contact .prep-item__num {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  border-right: 1px dashed var(--line);
}

.page-contact .prep-item__body {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 18px;
}

.page-contact .prep-item__title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--cream);
  letter-spacing: 0.02em;
}

.page-contact .prep-item__desc {
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--muted);
}

/* ---------- 答疑引导 ---------- */

.page-contact .faq-hint {
  display: grid;
  gap: 16px;
  padding: clamp(24px, 3.6vw, 44px);
  background:
    linear-gradient(135deg, rgba(56, 225, 208, 0.09), transparent 62%),
    var(--ink-2);
}

.page-contact .faq-hint h2 {
  margin: 0;
}

.page-contact .faq-hint p {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-contact .faq-hint__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 纠错与合作 ---------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .coop-card {
  position: relative;
  padding: 24px 22px 26px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
  transition: border-color 0.25s var(--ease);
}

.page-contact .coop-card:hover {
  border-color: rgba(56, 225, 208, 0.45);
}

.page-contact .coop-card h3 {
  margin: 0 0 10px;
  font-size: 17px;
  letter-spacing: 0.05em;
  color: var(--cream);
}

.page-contact .coop-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 备案信息 ---------- */

.page-contact .legal-block {
  max-width: 800px;
  padding-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.page-contact .legal-block h2 {
  margin: 10px 0 22px;
}

.page-contact .legal-grid {
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-contact .legal-row {
  display: contents;
}

.page-contact .legal-key {
  padding: 14px 0 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--muted);
  border-top: 1px dashed var(--line);
}

.page-contact .legal-val {
  margin: 0;
  padding: 0 0 14px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-word;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-contact .legal-grid {
    grid-template-columns: minmax(108px, 158px) minmax(0, 1fr);
  }

  .page-contact .legal-key {
    padding: 15px 16px 15px 0;
  }

  .page-contact .legal-val {
    padding: 15px 0;
  }
}

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

  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .resp-panel {
    grid-template-columns: minmax(210px, 270px) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
  }
}

@media (min-width: 960px) {
  .page-contact .prep-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
}

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