.page-contact {
  --pc-line: 1px solid var(--hairline);
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 面包屑 ---------- */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding-top: clamp(18px, 3vw, 34px);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-contact .crumbs__item + .crumbs__item::before {
  content: "/";
  margin-right: 4px;
  color: var(--hairline);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  margin-top: clamp(18px, 3vw, 36px);
  padding: clamp(26px, 4.4vw, 56px) clamp(18px, 3vw, 48px);
  border: var(--pc-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 130% at 86% 6%, rgba(255, 176, 32, 0.13), transparent 58%),
    radial-gradient(90% 120% at 4% 98%, rgba(47, 212, 234, 0.08), transparent 62%),
    linear-gradient(158deg, #171C24 0%, var(--ink) 66%);
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .contact-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.2vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--white);
  max-width: 20ch;
}

.page-contact .contact-hero__intro {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 58ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  margin-top: clamp(20px, 3vw, 32px);
  padding-top: clamp(16px, 2.6vw, 26px);
  border-top: var(--pc-line);
}

.page-contact .hero-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-contact .hero-fact .mono {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-contact .hero-fact span:last-child {
  font-size: 0.8125rem;
  color: var(--mist);
}

.page-contact .contact-hero__media {
  margin: 0;
  align-self: end;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: var(--pc-line);
  border-radius: var(--radius-sm);
  opacity: 0.9;
}

/* ---------- 章节通用 ---------- */
.page-contact .section {
  padding-top: clamp(44px, 6vw, 82px);
}

.page-contact .section__head {
  display: grid;
  gap: 10px;
  max-width: 68ch;
}

.page-contact .section__no {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 2.8vw, 2.25rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .section__summary {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist);
  max-width: 62ch;
}

/* ---------- 01 通道卡片 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(24px, 4vw, 40px);
  border-top: var(--pc-line);
  border-bottom: var(--pc-line);
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(22px, 3vw, 32px) clamp(18px, 2.4vw, 28px);
  border-bottom: var(--pc-line);
  transition: background var(--ease);
}

.page-contact .channel-card:last-child {
  border-bottom: 0;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  background: linear-gradient(180deg, rgba(255, 176, 32, 0.05), transparent 72%);
}

.page-contact .channel-card:hover::before,
.page-contact .channel-card:focus-within::before {
  transform: scaleX(1);
}

.page-contact .channel-card .tag {
  align-self: flex-start;
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .channel-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
  color: var(--amber);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .channel-card__meta {
  margin: auto 0 0;
  display: grid;
  gap: 10px;
  padding-top: 4px;
}

.page-contact .channel-card__meta > div {
  display: grid;
  grid-template-columns: 3.6em minmax(0, 1fr);
  gap: 12px;
}

.page-contact .channel-card__meta dt {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .channel-card__meta dd {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 02 通道使用建议 ---------- */
.page-contact .guidance-rail {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(24px, 4vw, 38px);
}

.page-contact .guidance-rail__main p {
  margin: 0 0 1.1em;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .guidance-rail__main p:last-child {
  margin-bottom: 0;
}

.page-contact .guidance-rail__link {
  padding-top: 1.1em;
  border-top: var(--pc-line);
  color: var(--mist);
}

.page-contact .guidance-rail__link a,
.page-contact .checklist-panel__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 212, 234, 0.45);
  transition: color var(--ease), border-color var(--ease);
}

.page-contact .guidance-rail__link a:hover,
.page-contact .checklist-panel__foot a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-contact .guidance-note {
  padding: clamp(20px, 2.6vw, 28px);
  border: var(--pc-line);
  border-left: 2px solid var(--cyan-deep);
  border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(47, 212, 234, 0.07), transparent 82%);
}

.page-contact .guidance-note__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-contact .guidance-note__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--silver);
}

/* ---------- 03 地址与反馈建议 ---------- */
.page-contact .office-split {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  margin-top: clamp(24px, 4vw, 38px);
}

.page-contact .office-panel {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 3vw, 40px);
  border: var(--pc-line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, #161B23 0%, var(--ink) 72%);
}

.page-contact .office-panel__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  pointer-events: none;
}

.page-contact .office-panel > *:not(.office-panel__bg) {
  position: relative;
}

.page-contact .office-address {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.1vw, 1.35rem);
  font-weight: 700;
  line-height: 1.62;
  color: var(--white);
  max-width: 24ch;
}

.page-contact .office-icp {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: clamp(18px, 2.6vw, 26px);
  border-top: var(--pc-line);
}

.page-contact .office-icp__label {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .office-icp__no {
  display: inline-block;
  padding: 6px 12px;
  border: var(--pc-line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-contact .checklist-panel {
  padding: clamp(24px, 3vw, 40px);
  border: var(--pc-line);
  border-radius: var(--radius);
  background: var(--slate);
}

.page-contact .checklist-panel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-contact .checklist-panel__lead {
  margin: 10px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .checklist {
  list-style: none;
  counter-reset: pc-chk;
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  padding: 0;
}

.page-contact .checklist li {
  counter-increment: pc-chk;
  position: relative;
  padding: 16px 0 16px 46px;
  border-top: var(--pc-line);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .checklist li::before {
  content: counter(pc-chk, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-contact .checklist-panel__foot {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: var(--pc-line);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 04 覆盖信息带 ---------- */
.page-contact .coverage-strip {
  display: grid;
  gap: 0;
  margin-top: clamp(24px, 4vw, 38px);
  border: var(--pc-line);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(255, 176, 32, 0.06), transparent 55%);
  overflow: hidden;
}

.page-contact .coverage-strip__cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px clamp(18px, 2.4vw, 28px);
  border-bottom: var(--pc-line);
}

.page-contact .coverage-strip__label {
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .coverage-strip__value {
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 2.4vw, 1.55rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-contact .coverage-strip__value.mono {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--amber);
}

.page-contact .coverage-strip__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px clamp(18px, 2.4vw, 28px);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--cyan);
  text-decoration: none;
  transition: background var(--ease), color var(--ease);
}

.page-contact .coverage-strip__link::after {
  content: "→";
  font-family: var(--font-mono);
  margin-left: 16px;
  transition: transform var(--ease);
}

.page-contact .coverage-strip__link:hover,
.page-contact .coverage-strip__link:focus-visible {
  background: rgba(47, 212, 234, 0.07);
  color: var(--amber);
}

.page-contact .coverage-strip__link:hover::after {
  transform: translateX(4px);
}

/* ---------- 04 对接流程 ---------- */
.page-contact .flow-rail {
  list-style: none;
  margin: clamp(28px, 4vw, 46px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .flow-step {
  padding: 20px 0;
  border-top: var(--pc-line);
}

.page-contact .flow-step__no {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-contact .flow-step__no::after {
  content: "";
  display: none;
  flex: 1;
  height: 1px;
  background: var(--hairline);
}

.page-contact .flow-step__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-contact .flow-step__body {
  margin: 8px 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist);
  max-width: 34ch;
}

.page-contact .flow-foot {
  margin: clamp(26px, 3.6vw, 40px) 0 0;
  padding-top: clamp(20px, 2.6vw, 28px);
  border-top: var(--pc-line);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .flow-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 212, 234, 0.45);
  transition: color var(--ease), border-color var(--ease);
}

.page-contact .flow-foot a:hover {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .section__head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: clamp(16px, 2.4vw, 32px);
    align-items: baseline;
  }

  .page-contact .section__summary {
    grid-column: 2;
  }

  .page-contact .coverage-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  }

  .page-contact .coverage-strip__cell {
    border-bottom: 0;
    border-right: var(--pc-line);
  }

  .page-contact .coverage-strip__link {
    justify-content: center;
    min-width: 200px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 2.5fr) minmax(280px, 1fr);
    align-items: end;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel-card {
    min-height: 300px;
    border-bottom: 0;
    border-right: var(--pc-line);
  }

  .page-contact .channel-card:last-child {
    border-right: 0;
  }

  .page-contact .guidance-rail {
    grid-template-columns: minmax(0, 8fr) minmax(0, 3fr);
    column-gap: clamp(28px, 3.4vw, 48px);
  }

  .page-contact .office-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(24px, 2.6vw, 36px);
  }

  .page-contact .flow-rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow-step {
    padding: 24px clamp(18px, 2vw, 28px) 24px 0;
    border-top: var(--pc-line);
  }

  .page-contact .flow-step__no::after {
    display: block;
  }

  .page-contact .flow-step:last-child .flow-step__no::after {
    display: none;
  }

  .page-contact .flow-step--wait .flow-step__no::after {
    background: repeating-linear-gradient(
      90deg,
      var(--hairline) 0 5px,
      transparent 5px 10px
    );
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-card::before,
  .page-contact .coverage-strip__link,
  .page-contact .coverage-strip__link::after {
    transition: none;
  }
}
</final>