.page-contact {
  --contact-rule: 1px solid var(--hair-strong);
  --contact-rule-soft: 1px solid var(--hair);
  --contact-cut: 3deg;
  background: var(--ink-900);
  color: var(--mist);
  overflow-x: hidden;
}

/* 面包屑 */
.page-contact .contact-crumb {
  padding: 6.5rem 0 0.5rem;
}
.page-contact .breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--graphite);
  text-transform: uppercase;
}
.page-contact .breadcrumb a {
  color: var(--cyan);
  text-decoration: none;
}
.page-contact .breadcrumb a:hover {
  color: var(--mist);
}

/* 首屏 */
.page-contact .contact-hero {
  padding: 1.5rem 0 4rem;
}
.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: end;
}
.page-contact .contact-hero__lead {
  max-width: 44rem;
}
.page-contact .contact-hero__tag {
  margin: 0 0 1.25rem;
}
.page-contact .contact-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5.4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--mist);
  margin: 0 0 1.25rem;
}
.page-contact .contact-hero__lede {
  font-size: 17px;
  line-height: 1.85;
  color: var(--graphite);
  margin: 0 0 1.75rem;
}
.page-contact .contact-hero__quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}
.page-contact .contact-hero__quick-item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-top: var(--contact-rule-soft);
  font-family: var(--font-mono);
  font-size: 14px;
}
.page-contact .contact-hero__quick-k {
  min-width: 3rem;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-transform: uppercase;
}
.page-contact .contact-hero__quick-v {
  color: var(--mist);
  word-break: break-all;
}
.page-contact .contact-hero__figure {
  margin: 0;
}
.page-contact .contact-hero__figure .figure {
  border: var(--contact-rule-soft);
}

/* 通用段距 */
.page-contact .section {
  padding: 4rem 0;
  position: relative;
}
.page-contact .section--tight {
  padding: 3rem 0 5rem;
}
.page-contact .section--panel {
  background: var(--panel);
  clip-path: polygon(0 var(--contact-cut), 100% 0, 100% calc(100% - var(--contact-cut)), 0 100%);
}
.page-contact .section--paper {
  background: var(--paper);
  color: var(--paper-ink);
}
.page-contact .contact-head {
  margin-bottom: 2.5rem;
}

/* 三条通道 */
.page-contact .channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.page-contact .channel {
  position: relative;
  padding: 1.75rem 1.5rem 1.5rem;
  background: var(--ink-900);
  border: 1px solid transparent;
  border-top: 3px solid var(--cyan);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  transition: border-color 320ms ease, transform 320ms ease;
}
.page-contact .channel:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
}
.page-contact .channel__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--silver);
}
.page-contact .channel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--mist);
}
.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-all;
  line-height: 1.6;
}
.page-contact .channel__body {
  margin: 0;
  color: var(--graphite);
  font-size: 15.5px;
  line-height: 1.8;
  flex: 1 1 auto;
}
.page-contact .channel__note {
  margin: 0.25rem 0 0;
  padding-top: 0.75rem;
  border-top: var(--contact-rule-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

/* 四类合作 */
.page-contact .partners {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-contact .partner {
  position: relative;
  padding: 1.5rem 1.5rem 1.25rem;
  border: var(--contact-rule-soft);
  background: linear-gradient(180deg, rgba(18, 41, 61, 0.55) 0%, rgba(11, 28, 44, 0.9) 100%);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-contact .partner__idx {
  position: absolute;
  top: -0.75rem;
  left: 1rem;
  margin: 0;
  padding: 0 0.5rem;
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--orange);
}
.page-contact .partner--b {
  border-left: 3px solid var(--grass);
}
.page-contact .partner--c {
  border-left: 3px solid var(--cyan);
}
.page-contact .partner--d {
  border-left: 3px solid var(--orange);
}
.page-contact .partner__title {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--mist);
}
.page-contact .partner__body {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
  flex: 1 1 auto;
}
.page-contact .partner__meta {
  margin: 0.5rem 0 0;
  padding-top: 0.75rem;
  border-top: var(--contact-rule-soft);
  font-size: 13.5px;
}
.page-contact .partner__meta dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.25rem;
}
.page-contact .partner__meta dd {
  margin: 0;
  color: var(--silver);
  line-height: 1.65;
}

/* 试用章节 */
.page-contact .contact-trial {
  background: var(--ink-950);
}
.page-contact .contact-trial .section-head {
  display: none;
}
.page-contact .trial {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
.page-contact .trial__eyebrow {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
  text-transform: uppercase;
}
.page-contact .trial__title {
  margin: 0 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.6vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--mist);
}
.page-contact .trial__lead p {
  margin: 0 0 1rem;
  color: var(--graphite);
  font-size: 16px;
  line-height: 1.85;
}
.page-contact .trial__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}
.page-contact .trial__panel {
  padding: 1.75rem 1.5rem;
  border: 1px solid rgba(0, 229, 196, 0.35);
  background: rgba(18, 41, 61, 0.6);
}
.page-contact .trial__panel-title {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-transform: uppercase;
}
.page-contact .trial__fields {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-contact .trial__field {
  display: grid;
  grid-template-columns: 6.5rem 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: var(--contact-rule-soft);
  align-items: baseline;
}
.page-contact .trial__field:first-child {
  border-top: var(--contact-rule-soft);
}
.page-contact .trial__field-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}
.page-contact .trial__field-v {
  font-size: 14.5px;
  color: var(--mist);
  line-height: 1.6;
}
.page-contact .trial__flow {
  margin: 1.25rem 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite);
}

/* 授权与纠错 */
.page-contact .contact-license {
  background: var(--ink-900);
}
.page-contact .license {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
.page-contact .license__block {
  padding: 1.75rem 1.5rem;
  border: var(--contact-rule-soft);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.page-contact .license__block:first-child {
  border-top: 3px solid var(--cyan);
}
.page-contact .license__block:last-child {
  border-top: 3px solid var(--orange);
}
.page-contact .license__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-contact .license__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--mist);
}
.page-contact .license__block p {
  margin: 0;
  color: var(--graphite);
  font-size: 15.5px;
  line-height: 1.85;
}
.page-contact .license__block p:last-child {
  margin-top: 0.5rem;
}

/* 到访信息 */
.page-contact .contact-visit {
  background: var(--paper);
  color: var(--paper-ink);
}
.page-contact .visit {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
}
.page-contact .visit__map .figure {
  border: 1px solid rgba(27, 42, 54, 0.18);
  background: var(--ink-900);
}
.page-contact .visit__info {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}
.page-contact .visit__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-contact .visit__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.1rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--paper-ink);
}
.page-contact .visit__list {
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-contact .visit__pair {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(27, 42, 54, 0.15);
  align-items: baseline;
}
.page-contact .visit__pair:first-child {
  border-top: 1px solid rgba(27, 42, 54, 0.15);
}
.page-contact .visit__pair dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #52616f;
}
.page-contact .visit__pair dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper-ink);
}
.page-contact .visit__note {
  margin: 0.75rem 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #52616f;
}

/* 回复时效 */
.page-contact .contact-reply {
  background: var(--ink-900);
}
.page-contact .reply {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.75rem;
  padding: 2rem 0 0;
  border-top: var(--contact-rule);
}
.page-contact .reply__badge {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  font-family: var(--font-mono);
  color: var(--cyan);
}
.page-contact .reply__num {
  font-size: clamp(3.5rem, 9vw, 6rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}
.page-contact .reply__unit {
  font-size: 1.25rem;
  letter-spacing: 0.1em;
  color: var(--silver);
}
.page-contact .reply__body {
  max-width: 46rem;
}
.page-contact .reply__idx {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}
.page-contact .reply__title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  letter-spacing: -0.02em;
  color: var(--mist);
}
.page-contact .reply__body p {
  margin: 0 0 1rem;
  color: var(--graphite);
  font-size: 15.5px;
  line-height: 1.85;
}
.page-contact .reply__contact {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: var(--contact-rule-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--silver);
}

/* 移动端微调 */
@media (max-width: 599px) {
  .page-contact .contact-hero {
    padding-top: 1rem;
  }
  .page-contact .contact-hero__quick-item {
    flex-direction: column;
    gap: 0.25rem;
  }
  .page-contact .trial__field {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
  .page-contact .visit__pair {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

/* 平板 */
@media (min-width: 768px) {
  .page-contact .contact-crumb {
    padding-top: 7.5rem;
  }
  .page-contact .contact-hero {
    padding: 2rem 0 5rem;
  }
  .page-contact .contact-hero__quick {
    grid-template-columns: 1fr 1fr;
    gap: 0 1rem;
  }
  .page-contact .channels {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-contact .partners {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem 1.5rem;
  }
  .page-contact .partner--a {
    transform: translateY(0);
  }
  .page-contact .partner--b {
    transform: translateY(1rem);
  }
  .page-contact .partner--c {
    transform: translateY(-0.5rem);
  }
  .page-contact .partner--d {
    transform: translateY(0.5rem);
  }
  .page-contact .license {
    grid-template-columns: 1fr 1fr;
  }
  .page-contact .trial {
    grid-template-columns: 1.05fr 1fr;
    align-items: start;
  }
  .page-contact .visit {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 2.5rem;
  }
  .page-contact .reply {
    grid-template-columns: auto 1fr;
    gap: 3rem;
    align-items: start;
  }
}

/* 桌面 */
@media (min-width: 1080px) {
  .page-contact .contact-crumb {
    padding-top: 8.5rem;
  }
  .page-contact .contact-hero__grid {
    grid-template-columns: 1fr 1.15fr;
    gap: 3rem;
  }
  .page-contact .channels {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
  .page-contact .channel:nth-child(2) {
    transform: translateY(1.25rem);
  }
  .page-contact .channel:nth-child(3) {
    transform: translateY(-0.5rem);
  }
  .page-contact .partners {
    grid-template-columns: repeat(12, 1fr);
    gap: 1.5rem;
  }
  .page-contact .partner--a {
    grid-column: 1 / span 7;
  }
  .page-contact .partner--b {
    grid-column: 8 / span 5;
    transform: translateY(1.5rem);
  }
  .page-contact .partner--c {
    grid-column: 1 / span 5;
    transform: translateY(-0.75rem);
  }
  .page-contact .partner--d {
    grid-column: 6 / span 7;
    transform: translateY(0.75rem);
  }
  .page-contact .section {
    padding: 5.5rem 0;
  }
  .page-contact .section--tight {
    padding: 4rem 0 6rem;
  }
}

/* 触屏降级横滚：卡片区保证窄屏不溢出 */
.page-contact .channels,
.page-contact .partners {
  width: 100%;
}
</PAGE_CSS>