.page-contact {
  --contact-gap: clamp(18px, 3vw, 32px);
  padding-bottom: clamp(32px, 6vw, 72px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: 26px;
  padding-block: clamp(22px, 4vw, 44px) clamp(26px, 4vw, 42px);
  border-bottom: 2px solid var(--ink);
}

.page-contact .contact-hero__copy {
  min-width: 0;
}

.page-contact .contact-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 7.4vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 15em;
}

.page-contact .hero-figure {
  margin: 0;
  aspect-ratio: 16 / 11;
  min-height: 200px;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

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

/* ---------- 框架：左通道 / 右流程 ---------- */
.page-contact .contact-shell {
  display: grid;
  gap: var(--contact-gap);
  padding-block: clamp(26px, 4vw, 46px);
}

.page-contact .contact-rail {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
}

.page-contact .rail-head {
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
}

.page-contact .rail-title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  line-height: 1.25;
  color: var(--ink);
}

.page-contact .contact-card {
  display: grid;
  gap: 10px;
  min-width: 0;
  padding: 20px 20px 22px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  transition: transform 0.18s var(--ease), background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .contact-card:hover {
  transform: translateY(-2px);
}

.page-contact .contact-card:focus-within {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  letter-spacing: 0.01em;
  line-height: 1.35;
  overflow-wrap: anywhere;
  color: var(--ink);
}

.page-contact .contact-card__note {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--slate);
}

.page-contact .contact-card--mail {
  background: var(--green);
  border-color: var(--green);
  border-left: 4px solid var(--lime);
}

.page-contact .contact-card--mail .contact-card__value {
  color: var(--paper);
}

.page-contact .contact-card--mail .contact-card__note {
  color: rgba(243, 233, 216, 0.74);
}

.page-contact .contact-card--phone {
  border-left: 4px solid var(--orange);
}

.page-contact .contact-card--feedback {
  border-left: 4px solid var(--brick);
  background: var(--cream);
}

.page-contact .contact-card--feedback .btn {
  justify-self: start;
  margin-top: 2px;
}

/* ---------- 右侧流程区 ---------- */
.page-contact .contact-flow {
  display: grid;
  gap: var(--contact-gap);
  min-width: 0;
}

.page-contact .flow-block {
  display: grid;
  gap: 18px;
  min-width: 0;
  padding-bottom: clamp(26px, 4vw, 40px);
}

.page-contact .flow-block + .flow-block {
  padding-top: clamp(24px, 3vw, 34px);
  border-top: 1px solid var(--line-strong);
}

.page-contact .flow-block .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.05rem);
  line-height: 1.2;
  color: var(--ink);
}

.page-contact .flow-intro {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--slate);
}

/* 步骤：看台阶梯错落 */
.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-bottom: 1px solid var(--line);
}

.page-contact .step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  transition: background-color 0.18s var(--ease), padding-left 0.18s var(--ease);
}

.page-contact .step:hover {
  background: rgba(233, 72, 33, 0.06);
}

.page-contact .step__num {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--gold);
}

.page-contact .step__body {
  min-width: 0;
}

.page-contact .step__title {
  margin: 0 0 4px;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .step__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .flow-figure {
  margin: 0;
  aspect-ratio: 5 / 4;
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

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

/* 数据问题清单 */
.page-contact .fact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .fact-list li {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  background: var(--paper);
  border-left: 3px solid var(--slate);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .fact-list li:nth-child(2n) {
  border-left-color: var(--orange);
}

.page-contact .fact-list strong {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--brick);
}

.page-contact .fact-list span {
  min-width: 0;
}

/* ---------- 双栏镜像：合作 / 响应 ---------- */
.page-contact .contact-pair {
  display: grid;
  gap: var(--contact-gap);
  padding-block: clamp(26px, 4vw, 46px);
  border-top: 2px solid var(--ink);
}

.page-contact .pair-card {
  display: grid;
  gap: 14px;
  align-content: start;
  min-width: 0;
  padding: clamp(20px, 3vw, 30px);
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--orange);
}

.page-contact .pair-card .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.85rem);
  line-height: 1.22;
  color: var(--ink);
}

.page-contact .pair-card--dark {
  background: var(--green);
  border-color: var(--green);
  border-top-color: var(--lime);
}

.page-contact .pair-card--dark .section-title {
  color: var(--paper);
}

.page-contact .pair-card--dark .eyebrow {
  color: rgba(243, 233, 216, 0.7);
}

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

.page-contact .pair-list li {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  padding-top: 14px;
  border-top: 1px dashed var(--line-strong);
}

.page-contact .pair-list li:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .pair-list__num {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.875rem;
  color: var(--gold);
  letter-spacing: 0.05em;
}

.page-contact .pair-list h3 {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .pair-list p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .response-figures {
  display: grid;
  gap: 12px;
}

.page-contact .response-figures .data-figure {
  padding: 14px 16px;
  border: 1px solid var(--line-light);
  background: rgba(27, 21, 17, 0.22);
}

.page-contact .response-figures .data-figure__value {
  display: block;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-contact .response-figures .data-figure__label {
  display: block;
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgba(243, 233, 216, 0.72);
}

.page-contact .response-note {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: rgba(243, 233, 216, 0.82);
}

.page-contact .response-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .pair-card--dark .btn--ghost {
  color: var(--paper);
  border-color: rgba(243, 233, 216, 0.5);
}

.page-contact .pair-card--dark .btn--ghost:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

/* ---------- 底部信息带 ---------- */
.page-contact .contact-strip {
  margin-top: clamp(10px, 2vw, 20px);
  padding: clamp(20px, 3vw, 28px) clamp(18px, 3vw, 28px);
  background: var(--paper);
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .contact-strip__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  font-weight: 600;
  color: var(--ink);
}

.page-contact .contact-strip__inner {
  display: grid;
  gap: 16px;
}

.page-contact .strip-item {
  min-width: 0;
}

.page-contact .strip-value {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .strip-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 0.875rem;
}

.page-contact .strip-links a {
  color: var(--brick);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .strip-links a:hover,
.page-contact .strip-links a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 焦点可见性 ---------- */
.page-contact a:focus-visible,
.page-contact .contact-card:focus-within {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .step {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 4px 16px;
    padding: 18px 0;
  }

  .page-contact .step:nth-child(2n) {
    padding-left: 24px;
  }

  .page-contact .step:nth-child(2n + 1) {
    padding-right: 24px;
  }

  .page-contact .fact-list li {
    grid-template-columns: 108px minmax(0, 1fr);
    align-items: baseline;
    gap: 4px 14px;
  }

  .page-contact .response-figures {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 780px) {
  .page-contact .contact-strip__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-contact .contact-hero__title {
    font-size: clamp(2.6rem, 4.3vw, 3.9rem);
  }

  .page-contact .hero-figure {
    aspect-ratio: 4 / 3;
    min-height: 0;
  }

  .page-contact .contact-shell {
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 96px;
  }

  .page-contact .contact-rail .contact-card--mail {
    padding: 24px 22px 26px;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-pair {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: clamp(24px, 3.5vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .step,
  .page-contact .strip-links a {
    transition: none;
  }

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