.page-contact {
  --co-line: rgba(242, 237, 228, 0.14);
  --co-line-strong: rgba(242, 237, 228, 0.3);
  --co-line-ink: rgba(11, 13, 16, 0.14);
  --co-ink-soft: rgba(11, 13, 16, 0.74);
  --co-paper-soft: rgba(242, 237, 228, 0.78);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: 118px 0 72px;
  background: linear-gradient(180deg, var(--sub-red) 0%, var(--red) 32%, var(--ink) 88%);
  isolation: isolate;
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.24;
  background-image:
    linear-gradient(var(--line-stone) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-stone) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 90%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 90%);
}

.page-contact .co-hero__crumbs {
  margin-bottom: 34px;
}

.page-contact .co-hero__crumbs .breadcrumbs__link,
.page-contact .co-hero__crumbs .breadcrumbs__sep {
  color: rgba(242, 237, 228, 0.66);
}

.page-contact .co-hero__crumbs .breadcrumbs__current {
  color: var(--paper);
}

.page-contact .co-hero__grid {
  display: grid;
  gap: 36px;
}

.page-contact .co-hero__index {
  display: none;
}

.page-contact .co-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 0;
  max-width: 15em;
}

.page-contact .co-hero__lede {
  margin: 20px 0 0;
  max-width: 34em;
  color: rgba(242, 237, 228, 0.84);
}

.page-contact .co-hero__anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 26px 46px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: 1px solid var(--co-line);
}

.page-contact .co-hero__note {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey-ink);
}

.page-contact .co-hero__note .link-inline {
  font-family: var(--font-mono);
}

.page-contact .link-inline {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .co-hero__media {
  margin: 0;
}

.page-contact .co-hero__media .media-frame__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* ---------- 双轴主干 ---------- */
.page-contact .co-axis {
  padding: 76px 0 0;
  background: var(--ink);
}

.page-contact .co-axis__grid {
  display: grid;
  gap: 46px;
}

.page-contact .co-rail {
  display: grid;
  gap: 32px;
  align-content: start;
}

.page-contact .co-contact {
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--terracotta);
  border-radius: var(--r-organic-sm);
  padding: 26px 22px;
}

.page-contact .co-contact__eyebrow {
  margin: 0 0 10px;
}

.page-contact .co-contact__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 12px;
}

.page-contact .co-contact__text {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--co-ink-soft);
  margin: 0 0 6px;
}

.page-contact .co-row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--co-line-ink);
}

.page-contact .co-row__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(11, 13, 16, 0.55);
}

.page-contact .co-row__value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .co-row__value--sm {
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
}

.page-contact .co-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-contact .co-contact__footnote {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--co-ink-soft);
}

.page-contact .co-contact__footnote .link-inline {
  color: var(--deep-cyan);
}

.page-contact .co-hours__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--grey-ink);
  margin: 0 0 12px;
}

.page-contact .co-hours__rail {
  position: relative;
  height: 8px;
  border-radius: 4px;
  background: var(--co-line);
  overflow: hidden;
}

.page-contact .co-hours__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  width: 37.5%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
}

.page-contact .co-hours__ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--grey-ink);
}

.page-contact .co-hours__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--grey-ink);
}

/* ---------- 通用块标题 ---------- */
.page-contact .co-block-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.6vw, 36px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 14px;
}

.page-contact .co-block-lead {
  font-size: 15px;
  line-height: 1.85;
  color: var(--co-paper-soft);
  margin: 0 0 28px;
  max-width: 42em;
}

/* ---------- 标签切换 ---------- */
.page-contact .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--co-line);
}

.page-contact .tabs__tab {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--grey-ink);
  background: transparent;
  border: 1px solid var(--co-line);
  border-radius: 999px;
  padding: 10px 20px;
  cursor: pointer;
  transition: background 180ms var(--ease), color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .tabs__tab:hover {
  color: var(--paper);
  border-color: var(--co-line-strong);
}

.page-contact .tabs__tab[aria-selected="true"] {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--paper);
}

.page-contact .tabs__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .co-panel {
  background: rgba(242, 237, 228, 0.04);
  border: 1px solid var(--co-line);
  border-radius: var(--r-organic-sm);
  padding: 26px 22px;
}

.page-contact .co-panel__title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-contact .co-panel__lead {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.82);
  margin: 0 0 22px;
}

.page-contact .co-panel__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  margin: 0 0 12px;
}

.page-contact .co-materials {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .co-materials li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(242, 237, 228, 0.86);
}

.page-contact .co-materials li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .co-panel__meta {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed var(--co-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--grey-ink);
}

/* ---------- 四步流程 ---------- */
.page-contact .co-flow-section {
  padding: 64px 0 80px;
  background: var(--ink);
}

.page-contact .co-flow__grid {
  display: grid;
  gap: 34px;
}

.page-contact .co-flow__media {
  margin: 0;
}

.page-contact .co-flow__media .media-frame__img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.page-contact .co-flow {
  list-style: none;
  margin: 28px 0 0;
  padding: 0 0 0 6px;
}

.page-contact .co-flow__item {
  position: relative;
  padding: 0 0 30px 34px;
  border-left: 1px solid var(--co-line);
}

.page-contact .co-flow__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .co-flow__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(79, 227, 208, 0.12);
}

.page-contact .co-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--amber);
  margin-bottom: 6px;
}

.page-contact .co-flow__title {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 8px;
}

.page-contact .co-flow__text {
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--co-paper-soft);
  margin: 0;
}

.page-contact .co-flow__eta {
  display: inline-block;
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--grey-ink);
  border: 1px solid var(--co-line);
  border-radius: 999px;
  padding: 4px 12px;
}

.page-contact .co-flow__note {
  margin: 28px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--amber);
  font-size: 13px;
  line-height: 1.8;
  color: var(--grey-ink);
}

/* ---------- 发信准备清单 ---------- */
.page-contact .co-prep-section {
  padding: 76px 0;
  background: var(--sub-red);
}

.page-contact .co-prep__grid {
  display: grid;
  gap: 34px;
}

.page-contact .co-prep {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-prep__item {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--co-line-strong);
}

.page-contact .co-prep__item:first-child {
  border-top: 1px solid var(--co-line-strong);
}

.page-contact .co-prep__num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-contact .co-prep__title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
  margin: 0 0 6px;
}

.page-contact .co-prep__text {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 228, 0.76);
  margin: 0;
}

/* ---------- 浅底受理边界 ---------- */
.page-contact .co-scope {
  padding: 78px 0;
  background: var(--paper);
  color: var(--ink);
}

.page-contact .co-scope__title {
  color: var(--ink);
  margin: 12px 0 14px;
}

.page-contact .co-scope__lead {
  font-size: 15px;
  line-height: 1.85;
  color: var(--co-ink-soft);
  margin: 0 0 30px;
  max-width: 44em;
}

.page-contact .co-scope .accordion {
  border-top: 1px solid var(--co-line-ink);
}

.page-contact .co-scope .accordion__item {
  border-bottom: 1px solid var(--co-line-ink);
}

.page-contact .co-scope .accordion__trigger {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 20px 0;
  background: transparent;
  border: 0;
  text-align: left;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  cursor: pointer;
}

.page-contact .co-scope .accordion__trigger:hover .accordion__label {
  color: var(--signal);
}

.page-contact .co-scope .accordion__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--terracotta);
}

.page-contact .co-scope .accordion__icon {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--terracotta);
}

.page-contact .co-scope .accordion__panel {
  padding: 0 0 22px 40px;
}

.page-contact .co-scope .accordion__panel p {
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--co-ink-soft);
  margin: 0;
}

.page-contact .co-scope .link-inline {
  color: var(--deep-cyan);
}

.page-contact .co-scope .accordion__trigger:focus-visible,
.page-contact .co-scope .link-inline:focus-visible {
  outline: 2px solid var(--deep-cyan);
  outline-offset: 3px;
}

/* ---------- 收束 ---------- */
.page-contact .co-close {
  padding: 68px 0;
  background: var(--signal);
  color: var(--paper);
}

.page-contact .co-close__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 4.2vw, 32px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-contact .co-close__text {
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 237, 228, 0.9);
  margin: 0 0 24px;
  max-width: 46em;
}

.page-contact .co-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .co-close .btn:focus-visible {
  outline: 2px solid var(--paper);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-contact .co-hero {
    padding: 134px 0 84px;
  }

  .page-contact .co-contact {
    padding: 30px 28px;
  }

  .page-contact .co-panel {
    padding: 32px 30px;
  }

  .page-contact .co-flow__grid {
    grid-template-columns: minmax(0, 0.6fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .co-flow__media {
    position: sticky;
    top: 108px;
  }

  .page-contact .co-prep__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .co-scope .accordion__panel {
    padding-left: 46px;
  }
}

@media (min-width: 1024px) {
  .page-contact .co-hero__grid {
    grid-template-columns: 120px minmax(0, 1.05fr) minmax(0, 0.8fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .co-hero__index {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(242, 237, 228, 0.48);
  }

  .page-contact .co-hero__media {
    margin-top: 58px;
  }

  .page-contact .co-axis__grid {
    grid-template-columns: minmax(0, 372px) minmax(0, 1fr);
    gap: 68px;
    align-items: start;
  }

  .page-contact .co-rail {
    position: sticky;
    top: 108px;
  }
}

@media (min-width: 1280px) {
  .page-contact .co-hero__anchors {
    gap: 30px 62px;
  }

  .page-contact .co-hero__grid {
    grid-template-columns: 132px minmax(0, 1.05fr) minmax(0, 0.82fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .tabs__tab {
    transition: none;
  }
}