.page-contact {
  --contact-edge: 1px solid var(--line-soft);
  --contact-bright: rgba(156, 192, 255, 0.3);
  background: var(--ink-900);
  color: var(--mist);
  padding-bottom: 64px;
}

.page-contact .contact-crumb {
  padding-top: 20px;
}

.page-contact .eyebrow {
  margin: 0 0 12px;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  color: var(--white);
  letter-spacing: -0.015em;
}

.page-contact h1 {
  margin: 0 0 18px;
  font-size: clamp(1.75rem, 6.4vw, 2.5rem);
  line-height: 1.2;
  font-weight: 900;
}

.page-contact h2 {
  margin: 0 0 10px;
  font-size: clamp(1.3rem, 4.6vw, 1.85rem);
  line-height: 1.28;
  font-weight: 800;
}

.page-contact h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  line-height: 1.4;
  font-weight: 700;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: 28px 0 52px;
}

.page-contact .hero-grid {
  display: grid;
  gap: 34px;
  align-items: start;
}

.page-contact .hero-lead {
  margin: 0 0 26px;
  max-width: 36em;
  font-size: var(--fz-16);
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .hero-lines {
  display: grid;
  gap: 12px;
  max-width: 620px;
}

.page-contact .contact-line {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "key tag"
    "value value";
  gap: 8px 12px;
  padding: 16px 18px;
  border: var(--contact-edge);
  border-left: 2px solid var(--blue);
  border-radius: 2px;
  background: linear-gradient(180deg, rgba(47, 125, 255, 0.09), rgba(47, 125, 255, 0));
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-contact .contact-line:hover,
.page-contact .contact-line:focus-visible {
  border-color: var(--blue);
  border-left-color: var(--orange);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

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

.page-contact .contact-line-key {
  grid-area: key;
  align-self: center;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.1em;
  color: var(--ice);
}

.page-contact .contact-line .tag {
  grid-area: tag;
  align-self: start;
}

.page-contact .contact-line-value {
  grid-area: value;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.05rem, 5vw, 1.75rem);
  line-height: 1.3;
  color: var(--white);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .hero-note {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-contact .hero-figure {
  margin: 0;
}

.page-contact .hero-figcap {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 14px;
  font-size: var(--fz-14);
  line-height: 1.62;
  color: var(--mist);
}

.page-contact .hero-figcap .status-dot {
  margin-top: 7px;
  flex: none;
}

/* ---------- 通道列表 ---------- */
.page-contact .channels {
  padding: 52px 0 48px;
  border-top: var(--contact-edge);
}

.page-contact .section-head {
  max-width: 44rem;
}

.page-contact .section-lead {
  margin: 0;
  font-size: var(--fz-16);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .channel-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .channel-row {
  display: grid;
  gap: 10px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-contact .channel-idx {
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-contact .channel-body p {
  margin: 0;
  font-size: var(--fz-14);
  line-height: 1.72;
  max-width: 40em;
}

.page-contact .channel-value {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: var(--fz-14);
  font-weight: 600;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(156, 192, 255, 0.38);
  overflow-wrap: anywhere;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .channel-value:hover,
.page-contact .channel-value:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.page-contact .channel-value:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* ---------- 商务合作 ---------- */
.page-contact .biz {
  padding: 52px 0;
  border-top: var(--contact-edge);
}

.page-contact .biz-grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .biz-card {
  position: relative;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--ink-700);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-contact .biz-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 34px;
  height: 2px;
  background: var(--orange);
}

.page-contact .biz-card:hover,
.page-contact .biz-card:focus-within {
  border-color: var(--contact-bright);
  transform: translateY(-2px);
  box-shadow: var(--shadow-2);
}

.page-contact .biz-tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-contact .biz-desc {
  margin: 0;
  font-size: var(--fz-14);
  line-height: 1.72;
}

.page-contact .biz-scene {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-size: var(--fz-12);
  line-height: 1.7;
  color: var(--ice);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .biz-link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.06em;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 125, 255, 0.45);
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .biz-link:hover,
.page-contact .biz-link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.page-contact .biz-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

.page-contact .biz-foot {
  margin: 22px 0 0;
  font-size: var(--fz-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 回复时间 ---------- */
.page-contact .hours {
  padding: 52px 0;
  border-top: var(--contact-edge);
  background: linear-gradient(180deg, rgba(11, 18, 32, 0) 0%, rgba(11, 18, 32, 0.9) 42%, rgba(11, 18, 32, 0) 100%);
}

.page-contact .hours-grid {
  display: grid;
  gap: 30px;
}

.page-contact .hours-figure {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 10vw, 3.25rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  font-variant-numeric: tabular-nums;
}

.page-contact .hours-caption {
  margin: 0;
  max-width: 30em;
  font-size: var(--fz-14);
  line-height: 1.72;
}

.page-contact .hours-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .hours-list li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
}

.page-contact .hours-key {
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.1em;
  color: var(--green);
}

.page-contact .hours-list p {
  margin: 0;
  font-size: var(--fz-14);
  line-height: 1.7;
}

/* ---------- 地址 ---------- */
.page-contact .address {
  padding: 52px 0;
  border-top: var(--contact-edge);
}

.page-contact .address-grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-contact .address-figure {
  margin: 0;
}

.page-contact .address-figcap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .address-value {
  margin: 0 0 14px;
  font-size: clamp(1.1rem, 4.4vw, 1.5rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.page-contact .address-desc {
  margin: 0;
  max-width: 30em;
  font-size: var(--fz-14);
  line-height: 1.75;
}

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

/* ---------- 写信清单 ---------- */
.page-contact .brief {
  padding: 20px 0 52px;
}

.page-contact .brief-panel {
  padding: 26px 20px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(47, 125, 255, 0.14), rgba(47, 125, 255, 0) 62%),
    var(--ink-800);
  box-shadow: var(--shadow-1);
}

.page-contact .brief-lead {
  margin: 0;
  font-size: var(--fz-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .brief-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .brief-list li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 10px;
  align-items: baseline;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-contact .brief-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .brief-key {
  font-family: var(--font-mono);
  font-size: var(--fz-12);
  letter-spacing: 0.1em;
  color: var(--ice);
}

.page-contact .brief-list p {
  margin: 0;
  font-size: var(--fz-14);
  line-height: 1.66;
  color: var(--white);
}

.page-contact .brief-cta {
  margin-top: 24px;
}

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

/* ---------- 站点信息 ---------- */
.page-contact .site-meta {
  padding: 32px 0 8px;
  border-top: var(--contact-edge);
}

.page-contact .meta-row {
  display: grid;
  gap: 20px;
}

.page-contact .meta-block h2 {
  margin: 0 0 8px;
  font-size: var(--fz-14);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  font-weight: 500;
  color: var(--mist);
}

.page-contact .meta-value {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fz-16);
  font-weight: 600;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .meta-desc {
  margin: 0;
  font-size: var(--fz-12);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .meta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.page-contact .meta-link {
  font-size: var(--fz-14);
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .meta-link:hover,
.page-contact .meta-link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.page-contact .meta-link:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-crumb {
    padding-top: 28px;
  }

  .page-contact .contact-hero {
    padding: 36px 0 64px;
  }

  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 40px;
  }

  .page-contact .contact-line {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "key value tag";
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
  }

  .page-contact .contact-line-key {
    min-width: 5.5em;
  }

  .page-contact .contact-line .tag {
    align-self: center;
  }

  .page-contact .channel-row {
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 220px);
    gap: 17px;
    align-items: start;
    padding: 24px 0;
  }

  .page-contact .channel-value {
    justify-self: end;
    text-align: right;
  }

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

  .page-contact .hours-grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 44px;
    align-items: start;
  }

  .page-contact .address-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 40px;
  }

  .page-contact .brief-panel {
    padding: 34px 32px;
  }

  .page-contact .brief-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 28px;
  }

  .page-contact .brief-list li {
    border-bottom: 1px dashed var(--line-soft);
  }

  .page-contact .brief-list li:last-child {
    border-bottom: 1px dashed var(--line-soft);
  }

  .page-contact .meta-row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 32px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact {
    padding-bottom: 88px;
  }

  .page-contact .contact-hero {
    padding: 48px 0 76px;
  }

  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 64px;
  }

  .page-contact .channels,
  .page-contact .biz,
  .page-contact .hours,
  .page-contact .address {
    padding: 72px 0;
  }

  .page-contact .channel-row {
    grid-template-columns: 64px minmax(0, 1fr) minmax(0, 280px);
    gap: 28px;
    padding: 28px 0;
  }

  .page-contact .biz-grid {
    gap: 20px;
    margin-top: 34px;
  }

  .page-contact .biz-card:nth-child(2) {
    margin-top: 26px;
  }

  .page-contact .biz-card:nth-child(3) {
    margin-top: 52px;
  }

  .page-contact .biz-card {
    padding: 26px 24px 24px;
  }

  .page-contact .hours-figure {
    font-size: 3.5rem;
  }

  .page-contact .brief {
    padding: 24px 0 72px;
  }
}

/* 仅在支持悬停的宽屏上收起适用场景，键盘聚焦时同样展开 */
@media (min-width: 1024px) and (hover: hover) {
  .page-contact .biz-scene {
    opacity: 0;
    transform: translateY(4px);
  }

  .page-contact .biz-card:hover .biz-scene,
  .page-contact .biz-card:focus-within .biz-scene {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-line,
  .page-contact .biz-card,
  .page-contact .biz-scene,
  .page-contact .channel-value,
  .page-contact .biz-link,
  .page-contact .meta-link {
    transition: none;
  }

  .page-contact .contact-line:hover,
  .page-contact .biz-card:hover,
  .page-contact .biz-card:focus-within {
    transform: none;
  }
}