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

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-block: clamp(20px, 4vw, 40px) clamp(24px, 4vw, 48px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.25rem, 8.4vw, 4.75rem);
  line-height: 1.03;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  margin: clamp(16px, 2.6vw, 26px) 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-hero__index {
  list-style: none;
  margin: clamp(24px, 4vw, 38px) 0 0;
  padding: clamp(16px, 2.6vw, 22px) 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 14px 28px;
}

@media (min-width: 640px) {
  .page-contact .contact-hero__index {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .contact-hero__k {
  display: block;
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .contact-hero__v {
  display: block;
  margin-top: 7px;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .contact-hero__media {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 两栏骨架 ---------- */
.page-contact .contact-layout {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  padding-block: clamp(28px, 5vw, 56px) 0;
}

@media (min-width: 1000px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 316px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-contact .contact-channels {
    position: sticky;
    top: 104px;
  }
}

.page-contact .contact-body {
  display: grid;
  gap: clamp(34px, 5vw, 60px);
  min-width: 0;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .contact-channels__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-channels__sub {
  margin: 9px 0 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel-list {
  list-style: none;
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .channel-card {
  display: grid;
  gap: 7px;
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 18px) clamp(14px, 2vw, 18px) clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  background: var(--ink-800);
}

.page-contact .channel-card--primary {
  border-left-color: var(--amber);
  background: var(--ink-700);
}

.page-contact .channel-card__label {
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .channel-card__value {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .channel-card--primary .channel-card__value {
  color: var(--amber);
}

.page-contact .channel-card__value--text {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--paper);
  line-height: 1.75;
}

.page-contact .channel-card__note {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 章节索引 ---------- */
.page-contact .contact-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

/* ---------- 通用章节 ---------- */
.page-contact .contact-section {
  min-width: 0;
}

.page-contact .contact-section__foot {
  margin: clamp(18px, 2.6vw, 24px) 0 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-section__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

/* ---------- 通道分流条 ---------- */
.page-contact .route-list {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .route-item {
  padding: clamp(18px, 3vw, 26px);
  background: var(--ink-900);
}

.page-contact .route-item__title {
  margin: 12px 0 0;
  font-family: var(--font-heading);
  font-size: clamp(1.0625rem, 2vw, 1.25rem);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .route-item__text {
  margin: 9px 0 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .route-item__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .route-item__text a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 在线时段 ---------- */
.page-contact .window-grid {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  gap: clamp(22px, 3.4vw, 34px);
}

@media (min-width: 780px) {
  .page-contact .window-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

.page-contact .window-text p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .window-text p:last-child {
  margin-bottom: 0;
}

.page-contact .window-clock {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  margin: 0 0 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .window-clock__time {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 6.4vw, 3.1rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--amber);
}

.page-contact .window-clock__dash {
  font-family: var(--font-data);
  font-size: clamp(1.1rem, 3.4vw, 1.75rem);
  line-height: 1;
  color: var(--line);
}

.page-contact .window-clock__unit {
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--muted);
  padding-bottom: 0.35em;
}

.page-contact .window-media {
  margin: 0;
}

/* ---------- 要素清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(16px, 2.6vw, 22px) 0;
  border-top: 1px solid var(--line);
}

.page-contact .checklist__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .checklist__box {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 5px;
  border: 1px solid var(--cyan-soft);
}

.page-contact .checklist__box::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--cyan);
  opacity: 0.32;
}

.page-contact .checklist__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .checklist__text {
  margin: 8px 0 0;
  max-width: 64ch;
  font-family: var(--font-body);
  font-size: 0.9875rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 商务合作 ---------- */
.page-contact .business-card {
  margin-top: clamp(18px, 3vw, 28px);
  padding: clamp(20px, 3.4vw, 34px);
}

.page-contact .business-card__mail {
  margin: 0;
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1rem, 3vw, 1.25rem);
  letter-spacing: 0.01em;
  color: var(--amber);
  overflow-wrap: anywhere;
}

.page-contact .business-card__lead {
  margin: 16px 0 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .business-card__sub {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: clamp(16px, 2.4vw, 22px);
  border-top: 1px solid var(--line);
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.page-contact .business-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-contact .business-list li {
  position: relative;
  padding-left: 20px;
  font-family: var(--font-body);
  font-size: 0.9875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .business-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1px;
  background: var(--amber);
}

.page-contact .business-card__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .business-card__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-contact .business-card__foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 地区与备案 ---------- */
.page-contact .region-grid {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 640px) {
  .page-contact .region-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .region-item {
  display: grid;
  gap: 9px;
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--ink-800);
}

.page-contact .region-item__k {
  font-size: 0.8125rem;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-contact .region-item__v {
  font-family: var(--font-body);
  font-size: 0.9875rem;
  line-height: 1.75;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* ---------- 页尾横带 ---------- */
.page-contact .contact-strip {
  margin-top: clamp(48px, 8vw, 96px);
  padding-block: clamp(32px, 5vw, 56px);
  background: var(--night);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-strip__inner {
  display: grid;
  gap: 14px;
}

.page-contact .contact-strip__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-strip__note {
  margin: 0;
  max-width: 58ch;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-strip__links {
  margin: 6px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-contact .contact-strip__links a {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

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

@media (min-width: 860px) {
  .page-contact .contact-strip__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, auto);
    align-items: end;
    gap: 18px 48px;
  }

  .page-contact .contact-strip__title {
    grid-column: 1;
    grid-row: 1;
  }

  .page-contact .contact-strip__note {
    grid-column: 1;
    grid-row: 2;
  }

  .page-contact .contact-strip__links {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: end;
    margin: 0;
  }
}