.page-contact {
  --contact-gap: clamp(16px, 2.2vw, 26px);
  color: var(--paper-100);
  background: var(--ink-900);
  padding-bottom: clamp(48px, 7vw, 88px);
  overflow-x: clip;
}

.page-contact .section {
  position: relative;
  padding: clamp(38px, 5.4vw, 76px) 0;
}

.page-contact .section--tight {
  padding: clamp(30px, 4vw, 52px) 0;
}

.page-contact .section-head {
  max-width: 780px;
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .section-head .lede {
  margin: 14px 0 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 42px) 0 clamp(30px, 4vw, 54px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(130% 100% at 88% -12%, rgba(37, 244, 208, 0.16), transparent 58%),
    radial-gradient(90% 70% at 0% 104%, rgba(232, 184, 74, 0.1), transparent 62%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--mint-200) 0 14px, transparent 14px 32px);
  opacity: 0.45;
}

.page-contact .hero-head {
  max-width: 860px;
  margin-top: clamp(14px, 2vw, 22px);
}

.page-contact .hero-head h1 {
  margin: 12px 0 0;
  font-size: clamp(32px, 7.4vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .hero-head .lede {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  margin-top: clamp(22px, 3vw, 36px);
}

/* 联系卡 */
.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: var(--surface-deep);
  box-shadow: var(--shadow-lift);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(155, 255, 233, 0.12);
  border-radius: calc(var(--radius-lg) - 8px);
  pointer-events: none;
}

.page-contact .contact-card-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
  filter: saturate(0.75);
}

.page-contact .contact-card-body {
  position: relative;
  z-index: 1;
  padding: clamp(20px, 3vw, 36px);
  background: linear-gradient(160deg, rgba(6, 19, 15, 0.5), rgba(6, 19, 15, 0.86));
}

.page-contact .card-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 14px;
  border: 1px solid rgba(37, 244, 208, 0.42);
  border-radius: 999px;
  background: rgba(37, 244, 208, 0.1);
  color: var(--cyan-400);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-contact .cc-label {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--slate-300);
}

.page-contact .cc-value {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 20px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .cc-value--cyan {
  color: var(--cyan-400);
}

.page-contact .cc-value--gold {
  color: var(--gold-500);
}

.page-contact .cc-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

/* 页内索引 */
.page-contact .quick-index {
  padding: clamp(16px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(11, 33, 26, 0.62);
}

.page-contact .qi-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--slate-300);
}

.page-contact .qi-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .qi-item + .qi-item {
  border-top: 1px solid var(--line);
}

.page-contact .qi-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 2px;
  color: var(--paper-100);
  font-size: 15px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 180ms var(--ease), transform 180ms var(--ease);
}

.page-contact .qi-link:hover,
.page-contact .qi-link:focus-visible {
  color: var(--cyan-400);
  transform: translateX(3px);
}

.page-contact .qi-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-400);
  flex: none;
}

.page-contact .qi-arrow {
  margin-left: auto;
  color: var(--slate-300);
}

/* ---------- 客服通道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .channel-card {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-contact .channel-card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-lift);
}

.page-contact .ch-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan-400);
}

.page-contact .ch-val {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.5;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .ch-note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-300);
}

.page-contact .response-strip {
  margin-top: var(--contact-gap);
  padding: clamp(18px, 2.6vw, 26px);
  border-left: 3px solid var(--orange-500);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(90deg, rgba(255, 106, 61, 0.12), rgba(255, 106, 61, 0.02));
}

.page-contact .rs-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--orange-500);
}

.page-contact .rs-text {
  margin: 10px 0 0;
  max-width: 76ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-100);
}

/* ---------- 换设备登录 ---------- */
.page-contact #device {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 33, 26, 0.9), rgba(6, 19, 15, 0.2));
}

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

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

.page-contact .step {
  display: flex;
  gap: 14px;
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(18, 54, 43, 0.55);
}

.page-contact .step-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--gold-500);
}

.page-contact .step-main {
  min-width: 0;
}

.page-contact .step-title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-100);
}

.page-contact .step-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .prep-card {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: rgba(37, 244, 208, 0.05);
}

.page-contact .prep-title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-contact .prep-list {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .prep-item {
  border-bottom: 1px dashed var(--line);
}

.page-contact .prep-item label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 0;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-contact .prep-check {
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--cyan-400);
  cursor: pointer;
}

.page-contact .prep-card .text-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
}

/* ---------- 合作咨询 ---------- */
.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  margin-top: clamp(22px, 3vw, 34px);
}

.page-contact .partner-card {
  display: flex;
  flex-direction: column;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(18, 54, 43, 0.85), rgba(11, 33, 26, 0.85));
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .partner-card:hover {
  transform: translateY(-3px);
  border-color: rgba(232, 184, 74, 0.45);
}

.page-contact .partner-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.page-contact .partner-title {
  margin: 0;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--paper-100);
}

.page-contact .partner-text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .partner-points {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .partner-point {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-100);
}

.page-contact .partner-point::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--cyan-400);
}

.page-contact .partner-subject {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(232, 184, 74, 0.35);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gold-500);
}

/* ---------- 运营中心 ---------- */
.page-contact #office {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(29, 90, 70, 0.22), rgba(6, 19, 15, 0.1));
}

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

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

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

.page-contact .office-info {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(11, 33, 26, 0.7);
}

.page-contact .office-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
}

.page-contact .office-key {
  flex: none;
  width: 84px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.1em;
  color: var(--slate-300);
}

.page-contact .office-val {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .office-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate-300);
}

/* ---------- 沟通提示 ---------- */
.page-contact .tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--contact-gap);
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-contact .tip-card {
  padding: clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(18, 54, 43, 0.5);
}

.page-contact .tip-index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange-500);
}

.page-contact .tip-title {
  margin: 10px 0 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper-100);
}

.page-contact .tip-text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-contact .tips-tail {
  margin-top: var(--contact-gap);
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(37, 244, 208, 0.06);
}

.page-contact .tips-tail-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper-100);
}

.page-contact .tips-tail-text .text-link {
  margin: 0 2px;
}

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

  .page-contact .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 880px) {
  .page-contact .hero-grid {
    grid-template-columns: 1.45fr 1fr;
    align-items: start;
  }

  .page-contact .device-grid {
    grid-template-columns: 1.25fr 1fr;
    align-items: start;
  }

  .page-contact .office-grid {
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
  }

  .page-contact .quick-index {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }
}

@media (min-width: 1080px) {
  .page-contact .partner-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .partner-card,
  .page-contact .qi-link {
    transition: none;
  }

  .page-contact .channel-card:hover,
  .page-contact .partner-card:hover,
  .page-contact .qi-link:hover {
    transform: none;
  }
}