.page-contact {
  --ct-sec-pad: clamp(40px, 7vw, 88px);
  --ct-gap: clamp(16px, 2.4vw, 28px);
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 3vw, 36px) 0 clamp(40px, 6vw, 80px);
}

.page-contact .ct-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: clamp(220px, 48vw, 380px);
  background: var(--indigo);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
  z-index: -1;
}

.page-contact .ct-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .ct-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-kicker-dot {
  width: 7px;
  height: 7px;
  background: var(--lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 61, 0.16);
}

.page-contact .ct-hero h1 {
  margin: 0 0 clamp(16px, 2.4vw, 22px);
  font-size: clamp(34px, 7vw, 72px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .ct-lead {
  max-width: 38em;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-mail-block {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.4vw, 26px) clamp(16px, 2.6vw, 30px);
  background: var(--violet);
  border: 1px solid var(--rule-mid);
  border-left: 4px solid var(--orange);
  box-shadow: 6px 6px 0 var(--shade);
}

.page-contact .ct-mail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-mail {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(17px, 3.3vw, 44px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-mail-hint {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .ct-hero-fig {
  margin: 0;
  border: 1px solid var(--rule-mid);
  box-shadow: 8px 8px 0 var(--shade);
}

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

/* ---------- 通用区块 ---------- */
.page-contact .ct-sec {
  padding: var(--ct-sec-pad) 0;
}

.page-contact .ct-sec-head {
  margin-bottom: clamp(24px, 4vw, 40px);
  max-width: 46em;
}

.page-contact .ct-sec-num {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-contact .ct-sec-title {
  margin: 0 0 14px;
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .ct-sec-lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-sec a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--blue);
  padding-bottom: 1px;
}

.page-contact .ct-sec a:hover,
.page-contact .ct-sec a:focus-visible {
  color: var(--blue);
  border-bottom-color: var(--orange);
}

/* ---------- 渠道切换 ---------- */
.page-contact .ct-switch {
  position: relative;
}

.page-contact .ct-switch-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ct-switch-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--rule-soft);
}

.page-contact .ct-switch-tab {
  cursor: pointer;
  padding: 10px 16px;
  background: var(--indigo);
  border: 1px solid var(--rule-mid);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--mist);
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .ct-switch-tab:hover {
  border-color: var(--blue);
  color: var(--paper);
}

.page-contact .ct-switch-input:focus-visible ~ .ct-switch-tabs {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.page-contact .ct-switch-input:nth-of-type(1):checked ~ .ct-switch-tabs .ct-switch-tab:nth-child(1),
.page-contact .ct-switch-input:nth-of-type(2):checked ~ .ct-switch-tabs .ct-switch-tab:nth-child(2),
.page-contact .ct-switch-input:nth-of-type(3):checked ~ .ct-switch-tabs .ct-switch-tab:nth-child(3) {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--paper);
}

.page-contact .ct-switch-panels {
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .ct-switch-panel {
  display: none;
  padding: clamp(20px, 3vw, 32px);
  background: var(--indigo);
  border: 1px solid var(--rule-soft);
  border-top: 3px solid var(--blue);
}

.page-contact .ct-switch-input:nth-of-type(1):checked ~ .ct-switch-panels .ct-switch-panel:nth-child(1),
.page-contact .ct-switch-input:nth-of-type(2):checked ~ .ct-switch-panels .ct-switch-panel:nth-child(2),
.page-contact .ct-switch-input:nth-of-type(3):checked ~ .ct-switch-panels .ct-switch-panel:nth-child(3) {
  display: block;
}

.page-contact .ct-panel-title {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .ct-panel-body {
  margin: 0 0 14px;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-panel-meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--lime);
}

/* ---------- 邮件模板 ---------- */
.page-contact .ct-template-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .ct-template-copy p {
  margin: 0 0 14px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-points {
  list-style: none;
  margin: 22px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .ct-points li {
  padding-left: 18px;
  position: relative;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--blue);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .ct-points strong {
  color: var(--paper);
  font-weight: 700;
}

.page-contact .ct-board {
  background: var(--ink);
  border: 1px solid var(--rule-mid);
  box-shadow: 8px 8px 0 var(--violet);
}

.page-contact .ct-board-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-board-dot {
  width: 8px;
  height: 8px;
  background: var(--lime);
  animation: ct-pulse 2.4s ease-in-out infinite;
}

@keyframes ct-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.page-contact .ct-code {
  margin: 0;
  padding: clamp(16px, 2.6vw, 28px);
  font-family: var(--font-mono);
  font-size: clamp(12px, 1.6vw, 14px);
  line-height: 2;
  color: var(--paper);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  border-left: 3px solid var(--orange);
}

/* ---------- 响应节奏 ---------- */
.page-contact .ct-track {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-contact .ct-track-item {
  position: relative;
  padding-left: 22px;
}

.page-contact .ct-track-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 5px;
  width: 10px;
  height: 10px;
  background: var(--blue);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .ct-track-item:nth-child(2)::before { background: var(--orange); }
.page-contact .ct-track-item:nth-child(3)::before { background: var(--lime); }
.page-contact .ct-track-item:nth-child(4)::before { background: var(--wine); }

.page-contact .ct-track-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-contact .ct-track-title {
  margin: 6px 0 6px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--paper);
}

.page-contact .ct-track-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .ct-resp-fig {
  margin: 0;
  border: 1px solid var(--rule-soft);
}

.page-contact .ct-resp-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 联系方式三栏 ---------- */
.page-contact .ct-reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 34px);
}

.page-contact .ct-reach-item {
  padding-top: 16px;
  border-top: 2px solid var(--blue);
}

.page-contact .ct-reach-item:nth-child(2) { border-top-color: var(--orange); }
.page-contact .ct-reach-item:nth-child(3) { border-top-color: var(--wine); }

.page-contact .ct-reach-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ct-reach-value {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.2vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-reach-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 高频来信 ---------- */
.page-contact .ct-cases {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--rule-soft);
  border: 1px solid var(--rule-soft);
}

.page-contact .ct-case {
  display: grid;
  gap: 8px;
  padding: clamp(16px, 2.6vw, 26px);
  background: var(--indigo);
  transition: background 180ms var(--ease);
}

.page-contact .ct-case:hover {
  background: var(--violet);
}

.page-contact .ct-case-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--blue);
}

.page-contact .ct-case-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--paper);
}

.page-contact .ct-case-act {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 识别冒充 ---------- */
.page-contact .ct-guard-inner {
  padding: clamp(22px, 3.4vw, 40px);
  background: var(--indigo);
  border: 1px solid var(--wine);
  box-shadow: 10px 10px 0 rgba(124, 18, 48, 0.4);
}

.page-contact .ct-guard-title {
  margin: 0 0 20px;
  font-size: clamp(20px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-guard-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .ct-guard-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .ct-guard-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 9px;
  height: 9px;
  border: 1px solid var(--wine);
  background: transparent;
  transform: rotate(45deg);
}

.page-contact .ct-guard-inner p {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid rgba(217, 222, 232, 0.16);
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 延伸入口 ---------- */
.page-contact .ct-more-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .ct-more-links li {
  background: var(--indigo);
  border-left: 3px solid var(--blue);
}

.page-contact .ct-more-links a {
  display: block;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 0;
  transition: background 180ms var(--ease), padding-left 180ms var(--ease);
}

.page-contact .ct-more-links a:hover,
.page-contact .ct-more-links a:focus-visible {
  background: var(--violet);
  padding-left: 24px;
  color: var(--paper);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: clamp(16px, 2.4vw, 28px);
    position: relative;
    padding-top: 22px;
  }

  .page-contact .ct-track::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 4px;
    height: 1px;
    background: var(--rule-mid);
  }

  .page-contact .ct-track-item {
    padding-left: 0;
  }

  .page-contact .ct-track-item::before {
    top: -23px;
    left: 0;
  }

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

  .page-contact .ct-case {
    grid-template-columns: 120px minmax(0, 1fr) minmax(0, 1.2fr);
    gap: 22px;
    align-items: start;
  }

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

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

  .page-contact .ct-template-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-board-dot {
    animation: none;
  }

  .page-contact .ct-switch-tab,
  .page-contact .ct-case,
  .page-contact .ct-more-links a {
    transition: none;
  }
}