.page-contact {
  --cc-gap: clamp(16px, 2.4vw, 24px);
  overflow-x: clip;
}

.page-contact .contact-hero {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  padding-bottom: clamp(18px, 2.6vw, 30px);
}

.page-contact .hero-frame {
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-panel);
  box-shadow: var(--shadow-panel);
}

.page-contact .hero-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 480;
  object-fit: cover;
}

.page-contact .hero-copy {
  border-left: 2px solid var(--cyan);
  padding-left: clamp(14px, 2.6vw, 24px);
}

.page-contact .hero-copy h1 {
  margin: 10px 0 14px;
  font-family: var(--font-display);
  font-size: var(--fs-44);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .hero-copy .lede {
  margin: 0 0 12px;
  color: var(--paper);
  opacity: 0.92;
  line-height: 1.75;
}

.page-contact .hero-copy .note {
  margin: 0;
}

@media (min-width: 980px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: center;
  }
  .page-contact .hero-frame img {
    aspect-ratio: 1200 / 560;
  }
}

/* 渠道卡片 */

.page-contact .contact-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  margin-top: clamp(16px, 2.4vw, 26px);
}

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

.page-contact .channel-card {
  position: relative;
  padding: 20px 18px 22px;
  background: var(--ink-panel);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  transition: border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--cyan);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.page-contact .channel-idx {
  display: inline-block;
  margin-bottom: 12px;
  padding: 2px 8px;
  border-radius: 3px;
  background: var(--cyan);
  color: var(--ink-base);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
}

.page-contact .channel-name {
  margin: 0 0 12px;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .channel-value {
  margin: 0 0 14px;
  padding: 10px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  background: var(--ink-deep);
  color: var(--cyan);
  font-size: var(--fs-17);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.page-contact .channel-value--addr {
  font-family: var(--font-body);
  font-size: var(--fs-14);
  color: var(--cyan-soft);
  line-height: 1.7;
}

.page-contact .channel-fit {
  margin: 0 0 12px;
  color: var(--paper);
  font-size: var(--fs-14);
  line-height: 1.8;
}

.page-contact .channel-card .note {
  margin: 0;
}

.page-contact .addr-dots {
  display: block;
  width: 100%;
  max-width: 240px;
  height: auto;
  margin-top: 12px;
  opacity: 0.9;
}

/* 前缀 */

.page-contact .prefix-layout {
  display: grid;
  gap: clamp(18px, 2.6vw, 30px);
  margin-top: clamp(16px, 2.4vw, 26px);
}

@media (min-width: 900px) {
  .page-contact .prefix-layout {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

.page-contact .prefix-figure {
  margin: 0;
}

.page-contact .prefix-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-contact .prefix-copy .lede {
  margin: 0;
  color: var(--paper);
  line-height: 1.75;
}

.page-contact .prefix-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-contact .prefix-item {
  padding-left: 16px;
  border-left: 1px solid var(--line-soft);
}

.page-contact .prefix-item p {
  margin: 10px 0 0;
  color: var(--paper);
  font-size: var(--fs-14);
  line-height: 1.85;
}

.page-contact .prefix-pill {
  display: inline-block;
  padding: 6px 14px;
  border: 1px dashed var(--cyan);
  border-radius: 999px;
  background: var(--tint-cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  letter-spacing: 0.06em;
}

.page-contact .prefix-pill--orange {
  border-color: var(--orange);
  background: var(--tint-orange);
  color: var(--orange);
}

/* 合作 */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--cc-gap);
  margin-top: clamp(16px, 2.4vw, 26px);
}

@media (min-width: 840px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .coop-card {
  padding: 22px 18px;
  background: var(--ink-panel);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-panel);
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .coop-card:hover {
  box-shadow: var(--shadow-hover);
}

.page-contact .coop-card--cyan {
  border-top-color: var(--cyan);
}

.page-contact .coop-card--orange {
  border-top-color: var(--orange);
}

.page-contact .coop-card--muted {
  border-top-color: var(--muted);
}

.page-contact .coop-name {
  margin: 0 0 12px;
  font-size: var(--fs-22);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .coop-text {
  margin: 0;
  color: var(--paper);
  font-size: var(--fs-14);
  line-height: 1.8;
  opacity: 0.9;
}

.page-contact .coop-template {
  margin: 16px 0 0;
  padding: 10px 12px;
  border: 1px dashed var(--line);
  border-radius: var(--radius-sm);
  background: var(--ink-deep);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

/* 回复节奏 */

.page-contact .cadence-track {
  list-style: none;
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

@media (min-width: 900px) {
  .page-contact .cadence-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }
}

.page-contact .cadence-step {
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .cadence-idx {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
}

.page-contact .cadence-idx::before {
  content: "";
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px var(--tint-cyan);
}

.page-contact .cadence-title {
  margin: 0 0 8px;
  font-size: var(--fs-17);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .cadence-text {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-14);
  line-height: 1.8;
}

/* 来信示例 */

.page-contact .samples-lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  color: var(--paper);
  opacity: 0.9;
}

.page-contact .sample-list {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.page-contact .sample-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--ink-panel);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .sample-item:hover {
  border-color: var(--cyan);
}

.page-contact .sample-item summary {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: var(--fs-17);
  line-height: 1.6;
}

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

.page-contact .sample-item summary::after {
  content: "＋";
  margin-left: auto;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
}

.page-contact .sample-item[open] summary::after {
  content: "－";
}

.page-contact .sample-tag {
  flex: none;
  padding: 2px 8px;
  border-radius: 3px;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
}

.page-contact .sample-tag--orange {
  border-color: var(--orange);
  color: var(--orange);
}

.page-contact .sample-body {
  padding: 0 16px 18px;
  border-top: 1px solid var(--line-soft);
  margin-top: 2px;
}

.page-contact .sample-head {
  margin: 14px 0 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: var(--ink-deep);
  color: var(--cyan-soft);
  font-size: var(--fs-12);
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.page-contact .sample-body p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: var(--fs-14);
  line-height: 1.85;
}

/* 回访入口 */

.page-contact .contact-return {
  margin-top: var(--panel-gap);
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--orange);
  border-radius: var(--radius);
  background: linear-gradient(90deg, var(--tint-orange), transparent 64%);
}

.page-contact .contact-return p {
  margin: 0;
  color: var(--paper);
  font-size: var(--fs-17);
  line-height: 1.8;
}

.page-contact .contact-return a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 208, 0.45);
  transition: border-color var(--dur) var(--ease);
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .coop-card,
  .page-contact .sample-item,
  .page-contact .contact-return a {
    transition: none;
  }
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
}
<<<END>>>