.page-contact {
  --contact-signal: rgba(57, 230, 208, 0.5);
  --contact-grid-line: rgba(143, 163, 174, 0.14);
  background: var(--ink-950);
  color: var(--rice);
}

/* ---------- 首屏 ---------- */
.contact-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(circle at 82% 10%, rgba(57, 230, 208, 0.12), transparent 58%),
    radial-gradient(circle at 6% 92%, rgba(255, 140, 66, 0.09), transparent 62%),
    var(--ink-950);
}

.contact-hero-bg {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  pointer-events: none;
}

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

.contact-hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--contact-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--contact-grid-line) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse at 45% 25%, #000 15%, transparent 78%);
  mask-image: radial-gradient(ellipse at 45% 25%, #000 15%, transparent 78%);
}

.contact-hero-inner {
  position: relative;
  z-index: 1;
  padding: 28px 0 60px;
}

.contact-hero-head {
  align-items: end;
  margin-top: 22px;
}

.contact-display {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.1rem, 8.4vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 12px 0 0;
  max-width: 15em;
}

.contact-lede {
  margin: 24px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(243, 239, 230, 0.78);
  border-left: 2px solid var(--contact-signal);
  padding-left: 16px;
}

.contact-panel-grid {
  align-items: start;
  margin-top: 36px;
}

.contact-panel {
  border: 2px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(18, 50, 74, 0.88), rgba(5, 18, 31, 0.94));
  padding: 6px 18px 14px;
  box-shadow: 8px 8px 0 rgba(57, 230, 208, 0.08);
}

.contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.contact-row:last-child {
  border-bottom: 0;
}

.contact-key {
  flex: 0 0 100%;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.contact-value {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 5vw, 1.6rem);
  line-height: 1.3;
  color: var(--rice);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.18s var(--ease);
}

.contact-value:hover,
.contact-value:focus-visible {
  color: var(--cyan);
}

.contact-value--tel {
  font-size: clamp(1.75rem, 9vw, 2.6rem);
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.contact-value--tel:hover,
.contact-value--tel:focus-visible {
  color: var(--orange);
}

.contact-value--addr {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  letter-spacing: 0;
  word-break: normal;
}

.contact-hint {
  flex: 0 0 100%;
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--mist);
}

.contact-status {
  border: 1px solid var(--line-strong);
  background: rgba(10, 32, 51, 0.72);
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-status .chip {
  align-self: flex-start;
}

.status-list {
  display: grid;
  gap: 0;
  margin: 0;
}

.status-list > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.status-list dt {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.status-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1.2;
  color: var(--rice);
  text-align: right;
}

.status-value small {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.contact-status .btn {
  align-self: stretch;
  text-align: center;
}

/* ---------- 章节通用 ---------- */
.contact-prep,
.contact-flow,
.contact-partner,
.contact-next {
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
}

/* ---------- 01 咨询前准备 ---------- */
.contact-prep {
  background: var(--ink-900);
}

.prep-grid {
  margin-top: 26px;
  align-items: start;
}

.prep-intro h2 {
  margin: 0 0 18px;
  font-size: clamp(1.5rem, 5.4vw, 2.1rem);
  font-weight: 500;
  line-height: 1.25;
  color: var(--rice);
}

.prep-intro p {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(243, 239, 230, 0.76);
  max-width: 26em;
}

.prep-note {
  border-left: 2px solid var(--orange);
  padding-left: 14px;
  color: rgba(243, 239, 230, 0.66) !important;
  font-size: 0.875rem !important;
}

.prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.prep-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  min-height: 48px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(5, 18, 31, 0.5);
  cursor: pointer;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.prep-item:hover {
  border-color: var(--contact-signal);
  background: rgba(18, 50, 74, 0.6);
}

.prep-check {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  margin: 0;
}

.prep-box {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  border: 2px solid var(--stone);
  position: relative;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.prep-check:checked + .prep-box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.prep-check:checked + .prep-box::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(40deg);
}

.prep-check:focus-visible + .prep-box {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.prep-text {
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(243, 239, 230, 0.82);
  transition: color 0.18s var(--ease);
}

.prep-check:checked ~ .prep-text {
  color: var(--mist);
}

.prep-text strong {
  display: block;
  font-weight: 500;
  color: var(--rice);
  margin-bottom: 2px;
}

.prep-check:checked ~ .prep-text strong {
  color: var(--moss);
}

/* ---------- 02 响应流程 ---------- */
.contact-flow {
  background: var(--ink-950);
}

.flow-head {
  margin-top: 26px;
  align-items: start;
}

.flow-head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 5.4vw, 2.1rem);
  font-weight: 500;
  line-height: 1.25;
}

.flow-lede {
  margin: 16px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.flow-figure {
  margin: 28px 0 0;
  border: 1px solid var(--line-strong);
  overflow: hidden;
}

.flow-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.flow-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.flow-step {
  position: relative;
  background: var(--ink-950);
  padding: 22px 20px 24px;
  transition: background 0.2s var(--ease);
}

.flow-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 44px;
  height: 3px;
  background: var(--cyan);
  transition: background 0.2s var(--ease), width 0.2s var(--ease);
}

.flow-step:hover::before,
.flow-step:focus-within::before {
  background: var(--orange);
  width: 72px;
}

.flow-step:hover,
.flow-step:focus-within {
  background: var(--ink-800);
}

.flow-num {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.flow-step h3 {
  margin: 0 0 8px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--rice);
}

.flow-step p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}

.flow-step:hover p,
.flow-step:focus-within p {
  color: rgba(243, 239, 230, 0.86);
}

/* ---------- 03 协作咨询 ---------- */
.contact-partner {
  background:
    linear-gradient(rgba(10, 32, 51, 0.94), rgba(10, 32, 51, 0.94)),
    repeating-linear-gradient(135deg, rgba(143, 163, 174, 0.08) 0 1px, transparent 1px 18px);
}

.partner-grid {
  margin-top: 26px;
  align-items: start;
}

.partner-text h2 {
  margin: 0 0 18px;
  font-size: clamp(1.5rem, 5.4vw, 2.1rem);
  font-weight: 500;
  line-height: 1.25;
}

.partner-text p {
  margin: 0 0 16px;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: rgba(243, 239, 230, 0.76);
  max-width: 28em;
}

.partner-text .btn {
  margin-top: 8px;
}

.partner-stats {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
}

.partner-stats li {
  background: rgba(5, 18, 31, 0.82);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 48px;
}

.partner-stat-num {
  font-size: clamp(1.5rem, 6.6vw, 2rem);
  line-height: 1.1;
  color: var(--cyan);
}

.partner-stat-label {
  font-size: 0.75rem;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.partner-foot {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 04 下一步 ---------- */
.contact-next {
  background: var(--rice);
  color: var(--ink-950);
  border-bottom: 0;
}

.next-index {
  color: var(--terracotta) !important;
}

.next-panel h2 {
  margin: 10px 0 16px;
  font-size: clamp(1.5rem, 5.6vw, 2.2rem);
  font-weight: 500;
  line-height: 1.22;
  color: var(--ink-950);
  max-width: 18em;
}

.next-lede {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: #2a3a44;
  max-width: 34em;
}

.next-links {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.next-card {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-height: 48px;
  padding: 18px 20px;
  border: 2px solid var(--ink-950);
  color: var(--ink-950);
  text-decoration: none;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.next-card strong {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.next-card span {
  font-size: 0.8125rem;
  line-height: 1.7;
  opacity: 0.78;
}

.next-card:hover,
.next-card:focus-visible {
  background: var(--ink-950);
  border-color: var(--ink-950);
  color: var(--rice);
}

.next-card:hover span,
.next-card:focus-visible span {
  opacity: 0.82;
}

.next-minor {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.next-small {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 0 20px;
  border: 1px solid rgba(5, 18, 31, 0.4);
  font-size: 0.875rem;
  color: var(--ink-950);
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.next-small:hover,
.next-small:focus-visible {
  border-color: var(--terracotta);
  color: var(--terracotta);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .contact-hero-inner {
    padding: 34px 0 72px;
  }

  .contact-lede {
    font-size: 1rem;
  }

  .contact-panel {
    padding: 8px 24px 18px;
  }

  .contact-row {
    padding: 24px 0;
  }

  .flow-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .contact-hero-inner {
    padding: 44px 0 88px;
  }

  .contact-hero-head {
    margin-top: 34px;
  }

  .contact-lede {
    margin-top: 0;
    padding-left: 20px;
  }

  .contact-panel-grid {
    margin-top: 56px;
  }

  .contact-panel {
    padding: 10px 32px 22px;
    box-shadow: 12px 12px 0 rgba(57, 230, 208, 0.09);
  }

  .contact-row {
    gap: 12px 20px;
    padding: 28px 0;
  }

  .contact-status {
    padding: 26px 26px 28px;
  }

  .contact-prep,
  .contact-flow,
  .contact-partner,
  .contact-next {
    padding: 84px 0;
  }

  .prep-grid,
  .flow-head,
  .partner-grid {
    margin-top: 40px;
  }

  .prep-list {
    gap: 12px;
  }

  .flow-figure {
    margin-top: 40px;
  }

  .flow-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 24px;
  }

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

  .partner-side {
    justify-self: end;
  }

  .next-links {
    margin-top: 36px;
  }

  .next-panel {
    max-width: 1040px;
  }

  .next-minor {
    margin-top: 16px;
  }
}

@media (min-width: 1200px) {
  .contact-display {
    font-size: 4.25rem;
  }

  .contact-value {
    font-size: 1.7rem;
  }

  .contact-value--tel {
    font-size: 2.75rem;
  }

  .flow-step {
    padding: 28px 24px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-value,
  .page-contact .prep-item,
  .page-contact .prep-box,
  .page-contact .prep-text,
  .page-contact .flow-step,
  .page-contact .flow-step::before,
  .page-contact .flow-step p,
  .page-contact .next-card,
  .page-contact .next-small {
    transition: none;
  }

  .page-contact .flow-step:hover::before,
  .page-contact .flow-step:focus-within::before {
    width: 44px;
  }
}