.page-contact {
  --contact-gap: clamp(20px, 3vw, 36px);
  --contact-radius: 16px;
}

/* —— 首屏 —— */
.page-contact .contact-hero {
  padding-top: clamp(18px, 3vw, 36px);
  position: relative;
  overflow: hidden;
}

.page-contact .hero-split {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(20px, 3vw, 36px);
}

@media (min-width: 900px) {
  .page-contact .hero-split {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: start;
  }
}

.page-contact .hero-intro h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 6.2vw, 78px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
}

.page-contact .hero-accent {
  color: var(--cyan);
}

.page-contact .hero-lead {
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.78;
  max-width: 46ch;
  margin-top: 20px;
  color: var(--mist);
}

.page-contact .contact-hero .chapter-eyebrow {
  color: var(--cyan);
}

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

.page-contact .hero-hint {
  margin-top: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
  max-width: 46ch;
  border-left: 2px solid var(--amber);
  padding-left: 12px;
}

.page-contact .hero-aside {
  display: grid;
  gap: 14px;
}

.page-contact .hero-media {
  border-radius: var(--contact-radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-3);
}

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

.page-contact .hero-badge {
  border: 1px solid var(--line);
  border-radius: var(--contact-radius);
  padding: 16px 18px;
  background: rgba(221, 247, 241, 0.04);
  display: grid;
  gap: 8px;
}

.page-contact .hero-badge p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* —— 章节通用 —— */
.page-contact .chapter-head {
  max-width: 66ch;
}

.page-contact .chapter-head p {
  margin-top: 12px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .zone--paper .chapter-head p,
.page-contact .zone--paper-2 .chapter-head p {
  color: #4b5a63;
}

.page-contact .chapter-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 42px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin-top: 10px;
}

/* —— 渠道卡 —— */
.page-contact .channel-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

@media (min-width: 620px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--paper-2);
  border: 1px solid var(--line-dark);
  border-radius: var(--contact-radius);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease), border-color .22s var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--cyan-deep);
  box-shadow: 0 16px 34px -22px rgba(11, 30, 45, .55);
}

.page-contact .channel-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.3;
  color: var(--text);
  margin: 2px 0 0;
}

.page-contact .channel-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: var(--cyan-soft);
  color: var(--ink);
  margin-bottom: 2px;
}

.page-contact .channel-value {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.5vw, 16px);
  line-height: 1.5;
  color: var(--ink-2);
  word-break: break-word;
  background: var(--cyan-soft);
  padding: 6px 10px;
  border-radius: 6px;
  margin: 0;
}

.page-contact .channel-card:nth-child(3) .channel-value {
  background: rgba(228, 161, 58, .16);
}

.page-contact .channel-note {
  font-size: 14px;
  line-height: 1.75;
  color: #46545c;
  margin: 4px 0 6px;
}

/* —— 邮件协助 —— */
.page-contact .mail-flow {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(26px, 4vw, 44px);
}

@media (min-width: 940px) {
  .page-contact .mail-flow {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

.page-contact .mail-media {
  border-radius: var(--contact-radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink);
}

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

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

.page-contact .step-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(255, 255, 255, .02);
}

.page-contact .step-no {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  flex: none;
}

.page-contact .step-item h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
  margin: 4px 0 6px;
  color: var(--paper-2);
}

.page-contact .step-item p {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-contact .step-item .btn {
  margin-top: 2px;
}

.page-contact .mail-foot {
  margin-top: clamp(24px, 4vw, 36px);
  padding: 16px 20px;
  border-left: 3px solid var(--cyan);
  background: rgba(56, 225, 198, .06);
  border-radius: 0 12px 12px 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper);
}

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

/* —— 帮助中心分类 —— */
.page-contact .faq-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

@media (min-width: 620px) {
  .page-contact .faq-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .faq-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-dark);
  border-radius: var(--contact-radius);
  background: var(--paper);
  text-decoration: none;
  color: inherit;
  transition: transform .22s var(--ease), border-color .22s var(--ease), background .22s var(--ease);
}

.page-contact .faq-card:hover,
.page-contact .faq-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan-deep);
  background: var(--paper-2);
  outline: none;
}

.page-contact .faq-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--text);
  margin: 4px 0 2px;
  padding-right: 26px;
}

.page-contact .faq-card p {
  font-size: 14px;
  line-height: 1.75;
  color: #4b5a63;
  margin: 0;
}

.page-contact .faq-arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  font-family: var(--font-mono);
  color: var(--cyan-deep);
  font-size: 16px;
}

.page-contact .faq-foot {
  margin-top: clamp(22px, 3vw, 32px);
  font-size: 14.5px;
  line-height: 1.8;
  color: #46545c;
}

.page-contact .text-link {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  margin-left: 6px;
  font-weight: 600;
}

/* —— 合作与反馈 —— */
.page-contact .collab-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(26px, 4vw, 42px);
}

@media (min-width: 760px) {
  .page-contact .collab-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .collab-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 3vw, 28px);
  background: var(--paper-2);
  border: 1px solid var(--line-dark);
  border-radius: var(--contact-radius);
  border-top: 3px solid var(--amber);
}

.page-contact .collab-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.35;
  color: var(--text);
  margin: 0;
}

.page-contact .collab-card p {
  font-size: 14px;
  line-height: 1.78;
  color: #46545c;
  margin: 0;
  flex: 1;
}

.page-contact .collab-card .mono-tag {
  align-self: flex-start;
}

.page-contact .collab-cta {
  margin-top: clamp(24px, 4vw, 36px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--ink);
  border-radius: var(--contact-radius);
  color: var(--paper);
}

.page-contact .collab-cta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--cyan-soft);
  flex: 1 1 240px;
}

/* —— 到访与邮寄 —— */
.page-contact .visit-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(26px, 4vw, 40px);
}

@media (min-width: 860px) {
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

.page-contact .visit-address {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.55;
  color: var(--text);
  padding: 10px 14px;
  background: rgba(228, 161, 58, .16);
  border-radius: 8px;
  display: inline-block;
  margin: 10px 0 14px;
}

.page-contact .visit-main p {
  font-size: 14.5px;
  line-height: 1.8;
  color: #46545c;
  margin: 0 0 8px;
  max-width: 52ch;
}

.page-contact .visit-side {
  background: var(--paper);
  border: 1px solid var(--line-dark);
  border-radius: var(--contact-radius);
  padding: clamp(20px, 3vw, 28px);
}

.page-contact .visit-side h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.35;
  color: var(--text);
  margin: 0 0 12px;
}

.page-contact .visit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-contact .visit-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: #46545c;
}

.page-contact .visit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--ember);
}

.page-contact .visit-foot {
  margin-top: clamp(22px, 3vw, 32px);
  font-size: 14px;
  line-height: 1.8;
  color: #46545c;
}

.page-contact .visit-foot a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 600;
}

/* —— 交互与动效 —— */
.page-contact [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .55s var(--ease), transform .55s var(--ease);
}

.page-contact [data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.page-contact .btn[data-state="copied"] {
  border-color: var(--cyan);
  color: var(--cyan-deep);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact [data-reveal] {
    transform: none;
    transition: opacity .3s linear;
  }
  .page-contact .channel-card,
  .page-contact .faq-card {
    transition: none;
  }
}

/* —— 窄屏收敛 —— */
@media (max-width: 480px) {
  .page-contact .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .page-contact .hero-actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
  .page-contact .collab-cta {
    padding: 18px;
  }
  .page-contact .collab-cta .btn {
    width: 100%;
    justify-content: center;
  }
  .page-contact .step-item {
    padding: 16px;
  }
  .page-contact .visit-address {
    font-size: 15px;
    word-break: break-word;
  }
}
<<<END>>>