.page-contact {
  --c-space: clamp(44px, 8vw, 96px);
  --c-space-s: clamp(22px, 4vw, 40px);
  background: var(--ink-900);
  color: var(--paper-100);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
}

.page-contact a {
  color: var(--orange-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.4);
}

.page-contact a:hover {
  border-bottom-color: var(--orange-500);
}

.page-contact .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--orange-500);
}

.page-contact .eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--orange-500);
}

.page-contact .eyebrow--ink {
  color: var(--orange-500);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(40px, 6vw, 84px);
  background:
    radial-gradient(90% 70% at 92% 0%, rgba(255, 106, 26, 0.18), transparent 62%),
    radial-gradient(70% 60% at 0% 100%, rgba(198, 242, 78, 0.07), transparent 70%),
    var(--ink-900);
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--concrete-400);
}

.page-contact .contact-hero .breadcrumb a {
  color: var(--paper-100);
  border-bottom-color: transparent;
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
}

.page-contact .hero-lead h1 {
  font-size: clamp(34px, 8.4vw, 74px);
  line-height: 1.02;
  color: var(--paper-050);
}

.page-contact .hero-copy {
  max-width: 56ch;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--concrete-400);
}

.page-contact .signal-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-top: clamp(20px, 3vw, 32px);
  padding: 12px 16px;
  background: rgba(22, 51, 42, 0.62);
  border: 1px solid var(--line-darker);
  border-left: 4px solid var(--signal-400);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

.page-contact .signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal-400);
  box-shadow: 0 0 0 4px rgba(198, 242, 78, 0.16);
  flex: none;
}

.page-contact .signal-live {
  color: var(--signal-400);
  font-weight: 600;
}

.page-contact .signal-sep {
  width: 1px;
  height: 14px;
  background: var(--line-darker);
}

.page-contact .signal-item {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
}

.page-contact .signal-k {
  color: var(--steel-600);
  color: var(--concrete-400);
  opacity: 0.7;
}

.page-contact .signal-v {
  color: var(--paper-050);
  overflow-wrap: anywhere;
}

.page-contact .hero-shot {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line-darker);
  background: var(--ink-700);
}

.page-contact .hero-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.06);
}

.page-contact .hero-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(200deg, rgba(255, 106, 26, 0.16), transparent 55%);
}

/* ---------- 渠道卡 ---------- */
.page-contact .contact-channels {
  padding: var(--c-space) 0;
}

.page-contact .hand-note {
  margin: 8px 0 22px;
  font-family: var(--font-hand);
  font-size: 15px;
  color: var(--orange-200);
  transform: rotate(-0.6deg);
}

.page-contact .channel-stack {
  display: grid;
  gap: 14px;
}

.page-contact .channel-card {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--paper-100);
  color: var(--graphite-900);
  border: 1px solid var(--line-paper);
  box-shadow: 0 14px 26px -20px var(--shadow-green);
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--orange-500);
  transform: skewX(-12deg);
  transform-origin: left bottom;
}

.page-contact .channel-card--phone::before {
  background: var(--signal-400);
}

.page-contact .channel-card--visit::before {
  background: var(--ink-700);
}

.page-contact .channel-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 36px -22px var(--shadow-green);
}

.page-contact .channel-num {
  position: absolute;
  top: 16px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel-600);
}

.page-contact .channel-name {
  font-size: 22px;
  color: var(--graphite-900);
  margin-bottom: 12px;
}

.page-contact .channel-value {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-900);
  overflow-wrap: anywhere;
  border-bottom: 1px dashed var(--concrete-400);
  padding-bottom: 12px;
}

.page-contact .channel-fit {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--graphite-900);
}

.page-contact .channel-hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel-600);
}

/* ---------- 提交要素 ---------- */
.page-contact .contact-response {
  padding: var(--c-space) 0;
  background: var(--paper-100);
  color: var(--graphite-900);
}

.page-contact .response-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .response-lead h2 {
  font-size: clamp(26px, 5vw, 42px);
  line-height: 1.1;
  color: var(--graphite-900);
  margin-bottom: 14px;
}

.page-contact .response-copy {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--graphite-900);
  max-width: 52ch;
}

.page-contact .response-foot {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel-600);
}

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

.page-contact .need-item {
  display: grid;
  gap: 4px;
  padding: 16px 0 16px 44px;
  border-bottom: 1px solid var(--line-paper);
  counter-increment: need;
  position: relative;
}

.page-contact .need-list {
  counter-reset: need;
}

.page-contact .need-item::before {
  content: "0" counter(need);
  position: absolute;
  left: 0;
  top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange-500);
  letter-spacing: 0.08em;
}

.page-contact .need-k {
  font-size: 16px;
  font-weight: 600;
  color: var(--graphite-900);
}

.page-contact .need-d {
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel-600);
}

/* ---------- 问题路径 ---------- */
.page-contact .contact-routes {
  padding: var(--c-space) 0;
  background:
    linear-gradient(180deg, rgba(22, 51, 42, 0.55), rgba(14, 31, 26, 0) 70%),
    var(--ink-900);
}

.page-contact .route-list {
  margin-top: 22px;
  border-top: 1px solid var(--line-dark);
}

.page-contact .route-row {
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .route-summary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 4px 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  transition: color 0.2s var(--ease-out);
}

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

.page-contact .route-summary::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--signal-400);
}

.page-contact .route-row[open] .route-summary::after {
  content: "−";
  color: var(--orange-500);
}

.page-contact .route-row[open] .route-summary {
  color: var(--orange-500);
}

.page-contact .route-type {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper-050);
  grid-column: 1;
}

.page-contact .route-row[open] .route-type {
  color: var(--orange-500);
}

.page-contact .route-target {
  grid-column: 1;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--concrete-400);
}

.page-contact .route-body {
  padding: 0 0 20px;
}

.page-contact .route-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper-100);
  max-width: 62ch;
}

.page-contact .route-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 24px 0 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--concrete-400);
}

/* ---------- 合作 ---------- */
.page-contact .contact-partner {
  padding: var(--c-space) 0;
  background: var(--paper-100);
  color: var(--graphite-900);
}

.page-contact .partner-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .partner-shot {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line-paper);
  background: var(--paper-050);
}

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

.page-contact .partner-copy h2 {
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.12;
  color: var(--graphite-900);
  margin-bottom: 14px;
}

.page-contact .partner-copy p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--graphite-900);
  max-width: 54ch;
}

.page-contact .partner-list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  border-left: 3px solid var(--orange-500);
}

.page-contact .partner-list li {
  padding: 8px 0 8px 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite-900);
  border-bottom: 1px dashed var(--line-paper);
}

.page-contact .partner-list li:last-child {
  border-bottom: none;
}

.page-contact .partner-note {
  font-size: 14px;
  color: var(--steel-600);
}

/* ---------- 到访 ---------- */
.page-contact .contact-visit {
  padding: var(--c-space) 0 var(--c-space-s);
  background: var(--ink-700);
  border-top: 1px solid var(--line-darker);
}

.page-contact .visit-grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-contact .visit-lead h2 {
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.12;
  color: var(--paper-050);
  margin-bottom: 14px;
}

.page-contact .visit-lead p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--concrete-400);
  max-width: 52ch;
}

.page-contact .visit-card {
  display: grid;
  gap: 16px;
  padding: 22px;
  background: rgba(14, 31, 26, 0.55);
  border: 1px solid var(--line-dark);
  box-shadow: inset 0 1px 0 rgba(201, 195, 182, 0.08);
}

.page-contact .visit-row {
  display: grid;
  gap: 5px;
  padding-left: 14px;
  border-left: 2px solid var(--orange-500);
}

.page-contact .visit-k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal-400);
}

.page-contact .visit-v {
  font-size: 15px;
  line-height: 1.65;
  color: var(--paper-050);
  overflow-wrap: anywhere;
}

.page-contact .visit-back {
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  display: flex;
  justify-content: flex-end;
}

.page-contact .contact-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--paper-100);
  border-bottom-color: transparent;
}

.page-contact .contact-top:hover {
  color: var(--orange-500);
  border-bottom-color: var(--orange-500);
}

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

  .page-contact .channel-card:nth-child(2) {
    margin-top: 30px;
  }

  .page-contact .channel-card:nth-child(3) {
    margin-top: 60px;
  }

  .page-contact .response-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }

  .page-contact .route-summary {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr) auto;
    align-items: center;
  }

  .page-contact .route-type {
    grid-column: 1;
  }

  .page-contact .route-target {
    grid-column: 2;
    text-align: right;
  }

  .page-contact .partner-grid {
    grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  }

  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }
}

@media (min-width: 960px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .page-contact .contact-hero,
  .page-contact .contact-channels,
  .page-contact .contact-routes,
  .page-contact .contact-visit {
    padding-top: clamp(56px, 6vw, 104px);
  }

  .page-contact .hero-shot {
    clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
  }

  .page-contact .contact-response {
    clip-path: polygon(0 0, 100% 2.2vw, 100% 100%, 0 100%);
    padding-top: clamp(64px, 7vw, 116px);
  }

  .page-contact .route-body {
    padding-left: 0;
    padding-right: 12%;
  }
}

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

  .page-contact .channel-card:hover {
    transform: none;
  }
}