.page-contact {
  display: block;
  position: relative;
  background:
    linear-gradient(var(--line-soft) 1px, transparent 1px) 0 0 / 100% 72px,
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px) 0 0 / 72px 100%,
    var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 8vw, 112px);
  overflow-x: hidden;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--signal);
  margin: 0;
}

.page-contact .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.4vw, 2.1rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 10px 0 0;
}

.page-contact .section-head {
  max-width: 42em;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-contact .section-head p:not(.eyebrow) {
  margin: 14px 0 0;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .section-head a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, 0.45);
  transition: border-color 220ms var(--ease);
}

.page-contact .section-head a:hover {
  border-bottom-color: var(--signal);
}

/* 面包屑 */
.page-contact .contact-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: clamp(20px, 3vw, 34px) 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-contact .contact-crumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(143, 163, 184, 0.5);
}

.page-contact .contact-crumb a {
  color: var(--mist);
  text-decoration: none;
}

.page-contact .contact-crumb a:hover {
  color: var(--signal);
}

/* 首屏 */
.page-contact .contact-hero {
  padding: clamp(28px, 5vw, 60px) 0 clamp(44px, 6vw, 76px);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2.2rem, 9vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  margin: 0;
  max-width: 15em;
}

.page-contact .contact-hero h1 span {
  display: block;
  color: var(--signal);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 40em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-hero__media {
  margin: 0;
  margin-top: clamp(8px, 2vw, 20px);
}

.page-contact .contact-hero__media img,
.page-contact .contact-errors__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* 联系渠道 */
.page-contact .contact-channels {
  padding: 0 0 clamp(48px, 6vw, 88px);
}

.page-contact .contact-cards {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--paper);
  color: var(--ink);
  padding: 26px 22px 24px;
  border-top: 3px solid var(--pitch);
  transition: border-color 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .contact-card:hover {
  transform: translateY(-2px);
  border-top-color: var(--signal);
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #4a5b70;
}

.page-contact .contact-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .contact-card__value {
  margin: 2px 0 0;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .contact-card__value--addr {
  font-size: 15px;
  line-height: 1.65;
  font-family: var(--font-body);
}

.page-contact .contact-card__desc {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: #3c4a5c;
}

.page-contact .contact-channels__aside {
  margin: clamp(20px, 3vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  border-left: 2px solid var(--signal);
  padding-left: 16px;
}

.page-contact .contact-channels__aside a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid rgba(244, 247, 249, 0.35);
  transition: color 220ms var(--ease), border-color 220ms var(--ease);
}

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

/* 服务时间 */
.page-contact .contact-hours {
  padding: 0 0 clamp(48px, 6vw, 88px);
}

.page-contact .contact-hours__inner {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--line-strong);
  padding-top: clamp(28px, 4vw, 48px);
}

.page-contact .contact-hours__copy p {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

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

.page-contact .hours-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--ink-soft);
  padding: 20px 18px;
  border-left: 3px solid var(--pitch);
}

.page-contact .hours-stat--warn {
  border-left-color: var(--signal);
}

.page-contact .hours-stat__num {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .hours-stat--warn .hours-stat__num {
  color: var(--signal);
}

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

/* 合作方向 */
.page-contact .contact-partners {
  padding: 0 0 clamp(48px, 6vw, 88px);
}

.page-contact .partner-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .partner-card {
  position: relative;
  background: var(--ink);
  padding: 26px 22px 24px;
  transition: background 240ms var(--ease);
}

.page-contact .partner-card:hover {
  background: var(--ink-soft);
}

.page-contact .partner-card__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin: 0 0 14px;
  border: 1px solid var(--signal);
  color: var(--signal);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-contact .partner-card__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .partner-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .partner-card__meta {
  margin-top: 14px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px !important;
  letter-spacing: 0.05em;
  color: var(--pitch) !important;
}

/* 合作流程 */
.page-contact .contact-flow {
  padding: 0 0 clamp(48px, 6vw, 88px);
}

.page-contact .flow-track {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-contact .flow-step {
  position: relative;
  background: var(--ink);
  padding: 26px 20px 24px;
  transition: background 240ms var(--ease);
}

.page-contact .flow-step:hover {
  background: var(--ink-soft);
}

.page-contact .flow-step__num {
  display: block;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--signal);
  margin-bottom: 14px;
}

.page-contact .flow-step__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .flow-step__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.76;
  color: var(--mist);
}

.page-contact .flow-step__materials {
  margin: 14px 0 0;
  padding: 12px 0 0;
  list-style: none;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  letter-spacing: 0.02em;
  color: var(--pitch);
}

.page-contact .flow-step__materials li {
  position: relative;
  padding-left: 14px;
}

.page-contact .flow-step__materials li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 1px;
  background: var(--signal);
}

/* 勘误反馈 */
.page-contact .contact-errors {
  padding: 0 0 clamp(48px, 6vw, 88px);
}

.page-contact .contact-errors__inner {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
  border-top: 1px solid var(--line-strong);
  padding-top: clamp(28px, 4vw, 48px);
}

.page-contact .contact-errors__copy > p {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .error-list {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .error-list li {
  display: flex;
  gap: 16px;
  background: var(--ink-soft);
  padding: 18px 18px 16px;
}

.page-contact .error-list__no {
  flex: 0 0 auto;
  font-size: 14px;
  font-weight: 700;
  color: var(--signal);
  padding-top: 2px;
}

.page-contact .error-list h3 {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 800;
  color: var(--paper);
}

.page-contact .error-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-errors__media {
  margin: 0;
  position: relative;
}

/* 主体信息 */
.page-contact .contact-filing {
  padding: 0;
}

.page-contact .contact-filing__inner {
  border-top: 1px solid var(--line);
  padding-top: clamp(28px, 4vw, 44px);
}

.page-contact .contact-filing__lead {
  margin: 14px 0 clamp(20px, 3vw, 30px);
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .filing-list {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .filing-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
}

.page-contact .filing-row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: rgba(143, 163, 184, 0.72);
}

.page-contact .filing-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-contact .filing-row dd.mono {
  letter-spacing: 0.04em;
}

/* 平板 */
@media (min-width: 720px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: 1fr;
  }

  .page-contact .contact-cards {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .hours-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .partner-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .error-list {
    grid-template-columns: 1fr;
  }

  .page-contact .filing-row {
    grid-template-columns: 190px 1fr;
    align-items: baseline;
    gap: 20px;
  }
}

/* 桌面 */
@media (min-width: 1040px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .contact-hero h1 {
    max-width: 13em;
  }

  .page-contact .hours-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .hours-stat {
    padding: 22px 20px;
  }

  .page-contact .contact-hours__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .flow-track {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .flow-step__materials {
    max-height: 0;
    margin-top: 0;
    padding-top: 0;
    overflow: hidden;
    opacity: 0;
    border-top-color: transparent;
    transition:
      max-height 300ms var(--ease),
      opacity 240ms var(--ease),
      margin-top 300ms var(--ease),
      padding-top 300ms var(--ease),
      border-top-color 240ms var(--ease);
  }

  .page-contact .flow-step:hover .flow-step__materials,
  .page-contact .flow-step:focus-within .flow-step__materials {
    max-height: 240px;
    margin-top: 14px;
    padding-top: 12px;
    opacity: 1;
    border-top-color: var(--line);
  }

  .page-contact .contact-errors__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-errors__media {
    position: sticky;
    top: 140px;
  }
}
<<<END>>>