.page-contact {
  --contact-panel: var(--ink-800);
  --contact-edge: rgba(18, 58, 82, 0.85);
  display: block;
}

/* ============ 面包屑 ============ */
.page-contact .breadcrumb {
  padding: 18px 0 6px;
  font-size: 13px;
}

/* ============ 首屏 ============ */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(40px, 6vw, 76px);
  border-bottom: 1px solid var(--contact-edge);
  background:
    radial-gradient(120% 90% at 88% 8%, rgba(47, 224, 208, 0.12), transparent 58%),
    linear-gradient(180deg, rgba(10, 34, 51, 0.9), rgba(4, 18, 31, 0) 78%);
}

.page-contact .contact-hero__grid {
  align-items: center;
  row-gap: clamp(26px, 4vw, 44px);
}

.page-contact .contact-hero__copy .eyebrow {
  margin-bottom: 16px;
}

.page-contact h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 5.2vw, 52px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-contact h1::after {
  content: "";
  display: block;
  width: 72px;
  height: 3px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--cyan), rgba(47, 224, 208, 0));
}

.page-contact .contact-hero__copy .lede {
  max-width: 40em;
  color: var(--fog);
  font-size: 16px;
  line-height: 1.9;
}

.page-contact .contact-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-hero__links a {
  display: inline-flex;
  align-items: center;
  padding: 9px 15px;
  border: 1px solid var(--line-cy);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease;
}

.page-contact .contact-hero__links a:hover,
.page-contact .contact-hero__links a:focus-visible {
  background: rgba(47, 224, 208, 0.14);
  border-color: var(--cyan);
  color: var(--mist);
}

.page-contact .contact-hero__figure {
  margin: 0;
}

.page-contact .contact-hero__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--contact-edge);
}

.page-contact .contact-hero__figure .figure__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(47, 224, 208, 0.2), rgba(4, 18, 31, 0.72) 68%);
  pointer-events: none;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.9) brightness(0.84);
}

/* ============ 三张渠道信息牌 ============ */
.page-contact .contact-channels .section-head {
  max-width: 46em;
}

.page-contact .contact-channels__deck {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  border: 1px solid var(--contact-edge);
  background: var(--contact-edge);
}

@media (min-width: 780px) {
  .page-contact .contact-channels__deck {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 3vw, 34px);
  background: var(--contact-panel);
  transition: background-color 0.25s ease;
}

.page-contact .channel-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color 0.25s ease;
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  background: var(--ink-700);
}

.page-contact .channel-card:hover::after,
.page-contact .channel-card:focus-within::after {
  border-color: var(--cyan);
}

.page-contact .channel-card__idx {
  color: var(--sand);
  font-size: 12px;
  letter-spacing: 0.3em;
  border-bottom: 1px solid rgba(232, 214, 184, 0.32);
  padding-bottom: 10px;
}

.page-contact .channel-card__title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 22px);
  font-weight: 800;
  line-height: 1.4;
  color: var(--mist);
}

.page-contact .channel-card__use {
  margin: 0;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.85;
}

.page-contact .channel-card__list {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  color: var(--fog);
  font-size: 14px;
  opacity: 0.6;
  transition: opacity 0.25s ease;
}

.page-contact .channel-card:hover .channel-card__list,
.page-contact .channel-card:focus-within .channel-card__list {
  opacity: 1;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 17px;
  line-height: 1.7;
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .channel-card__link {
  margin-top: auto;
  padding-top: 18px;
  align-self: flex-start;
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 208, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .channel-card__link:hover,
.page-contact .channel-card__link:focus-visible {
  color: var(--mist);
  border-color: var(--mist);
}

/* ============ 各条渠道的具体信息 ============ */
.page-contact .contact-direct {
  padding: clamp(44px, 6vw, 88px) 0 0;
}

.page-contact .contact-direct__list {
  margin-top: clamp(22px, 3vw, 36px);
  border-top: 1px solid var(--contact-edge);
}

.page-contact .direct-row {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 4vw, 48px) 0;
  border-bottom: 1px solid var(--contact-edge);
  scroll-margin-top: 120px;
}

@media (min-width: 940px) {
  .page-contact .direct-row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    gap: clamp(24px, 5vw, 64px);
    align-items: start;
  }
}

.page-contact .direct-row__lead .eyebrow {
  margin-bottom: 10px;
}

.page-contact .direct-row__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--mist);
}

.page-contact .direct-row__value {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 3vw, 30px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .direct-row__text {
  max-width: 42em;
  margin: 0 0 14px;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.9;
}

.page-contact .direct-row__text a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 243, 232, 0.42);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .direct-row__text a:hover,
.page-contact .direct-row__text a:focus-visible {
  color: var(--mist);
  border-color: var(--mist);
}

.page-contact .direct-row__meta {
  margin: 0;
  color: var(--sand);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}

/* ============ 提交前准备 ============ */
.page-contact .contact-prep {
  padding: clamp(46px, 6vw, 92px) 0;
  background: linear-gradient(180deg, rgba(10, 34, 51, 0.55), rgba(4, 18, 31, 0));
  border-top: 1px solid var(--contact-edge);
}

.page-contact .contact-prep__grid {
  align-items: start;
  row-gap: clamp(26px, 4vw, 42px);
}

.page-contact .contact-prep__copy .section-lede {
  max-width: 40em;
}

.page-contact .prepare-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--contact-edge);
}

.page-contact .prepare-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-faint);
}

@media (min-width: 600px) {
  .page-contact .prepare-list li {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }
}

.page-contact .prepare-list__k {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--sand);
}

.page-contact .prepare-list__v {
  color: var(--fog);
  font-size: 15px;
  line-height: 1.85;
}

.page-contact .contact-prep__figure {
  margin: 0;
}

.page-contact .contact-prep__figure .figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--contact-edge);
}

.page-contact .contact-prep__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.94) brightness(0.9);
}

/* ============ 合作与内容互荐 ============ */
.page-contact .contact-partner {
  padding: clamp(46px, 6vw, 88px) 0;
}

.page-contact .contact-partner__panel {
  position: relative;
  padding: clamp(26px, 4vw, 52px);
  background: var(--ink-800);
  border: 1px solid var(--contact-edge);
  border-left: 3px solid var(--ember);
}

.page-contact .contact-partner__panel .eyebrow {
  margin-bottom: 14px;
}

.page-contact .contact-partner__panel h2 {
  margin: 0 0 26px;
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 900;
  line-height: 1.28;
  color: var(--mist);
}

.page-contact .contact-partner__cols {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

@media (min-width: 900px) {
  .page-contact .contact-partner__cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }
}

.page-contact .contact-partner__main .prose {
  max-width: 40em;
  color: var(--fog);
  font-size: 15px;
  line-height: 1.9;
}

.page-contact .contact-partner__main .prose + .prose {
  margin-top: 16px;
}

.page-contact .partner-points {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-faint);
}

.page-contact .partner-points li {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-faint);
  color: var(--mist);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-contact .partner-points .mono {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.14em;
}

/* ============ 备案与站点信息 ============ */
.page-contact .contact-registry {
  padding: clamp(34px, 5vw, 64px) 0 clamp(48px, 6vw, 88px);
  border-top: 1px solid var(--contact-edge);
}

.page-contact .contact-registry__title {
  margin: 0 0 22px;
  font-size: 20px;
  font-weight: 800;
  color: var(--mist);
}

.page-contact .registry-list {
  display: grid;
  gap: 0;
  margin: 0 0 22px;
  border-top: 1px solid var(--line-faint);
}

.page-contact .registry-list__row {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-faint);
}

@media (min-width: 620px) {
  .page-contact .registry-list__row {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

.page-contact .registry-list dt {
  color: var(--fog);
  font-size: 13px;
  letter-spacing: 0.06em;
}

.page-contact .registry-list dd {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  overflow-wrap: anywhere;
}

.page-contact .registry-badge {
  display: inline-block;
  padding: 5px 12px;
  background: var(--sand);
  color: var(--ink-900);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-contact .contact-registry__note {
  max-width: 44em;
  margin: 0;
  color: var(--fog);
  font-size: 14px;
  line-height: 1.9;
}

.page-contact .contact-registry__note a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(140, 243, 232, 0.42);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .contact-registry__note a:hover,
.page-contact .contact-registry__note a:focus-visible {
  color: var(--mist);
  border-color: var(--mist);
}

/* ============ 键盘焦点 ============ */
.page-contact .channel-card__link:focus-visible,
.page-contact .contact-hero__links a:focus-visible,
.page-contact .direct-row__text a:focus-visible,
.page-contact .contact-registry__note a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ============ 窄屏保护 ============ */
@media (max-width: 880px) {
  .page-contact .grid-12 {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-contact .grid-12 > [class*="span-"] {
    grid-column: 1 / -1;
  }
}

@media (max-width: 420px) {
  .page-contact .contact-hero__links a {
    flex: 1 1 100%;
    justify-content: center;
  }
}

.page-contact .figure,
.page-contact .figure__frame,
.page-contact .figure img {
  max-width: 100%;
}
</main>