.page-contact {
  --contact-aside-top: 32px;
  --contact-card-radius: 3px;
  --contact-hero-pad-top: clamp(32px, 6vw, 72px);
  --contact-hero-pad-bottom: clamp(32px, 5vw, 64px);
}

/* ============ Hero ============ */
.page-contact .contact-hero {
  position: relative;
  padding: var(--contact-hero-pad-top) 0 var(--contact-hero-pad-bottom);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--line-strong), transparent 72%);
}

.page-contact .contact-hero .crumbs {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 6.2vw, 84px);
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--paper);
  max-width: 15em;
}

.page-contact .contact-hero__lede {
  margin: clamp(20px, 3vw, 28px) 0 0;
  max-width: 44ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--mute);
}

.page-contact .contact-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .contact-hero__jump a {
  display: inline-block;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-contact .contact-hero__jump a:hover,
.page-contact .contact-hero__jump a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  background: var(--glass-1);
}

/* ============ 两栏主体 ============ */
.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(36px, 5vw, 64px);
  padding: clamp(44px, 6vw, 88px) 0 clamp(8px, 2vw, 24px);
}

.page-contact .contact-grid__main > .h-section {
  margin-top: 12px;
}

.page-contact .contact-grid__tail {
  margin: clamp(28px, 4vw, 44px) 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mute);
}

.page-contact .contact-grid__tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 224, 0.4);
  transition: border-color 0.25s var(--ease);
}

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

/* ============ 合作方向横幅图 ============ */
.page-contact .contact-banner {
  position: relative;
  margin: clamp(24px, 3vw, 36px) 0 clamp(8px, 2vw, 20px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--contact-card-radius);
  background: var(--ink-2);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .contact-banner__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--paper);
  background: rgba(10, 26, 42, 0.82);
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line-strong);
}

/* ============ 合作方向列表 ============ */
.page-contact .directions__list {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .direction {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(10px, 2vw, 18px);
  padding: clamp(26px, 4vw, 44px) clamp(12px, 2vw, 20px) clamp(26px, 4vw, 44px) 0;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: border-left-color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.page-contact .direction:hover,
.page-contact .direction:focus-within {
  border-left-color: var(--cyan);
  background: var(--glass-1);
}

.page-contact .direction__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(40px, 6vw, 64px);
  line-height: 0.88;
  letter-spacing: -0.03em;
  color: var(--stone);
  transition: color 0.3s var(--ease);
}

.page-contact .direction:hover .direction__num,
.page-contact .direction:focus-within .direction__num {
  color: var(--cyan);
}

.page-contact .direction__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-contact .direction__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.4vw, 29px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .direction__text {
  margin: 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--mute);
}

.page-contact .direction__fit {
  margin: 16px 0 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  opacity: 0.84;
}

.page-contact .direction__fit-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mute);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
}

.page-contact .direction__tip {
  margin: 12px 0 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.page-contact .direction__tip-tag {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

/* ============ 联系卡片（粘性） ============ */
.page-contact .contact-card {
  padding: clamp(22px, 3vw, 32px);
  background: var(--glass-2);
  border: 1px solid var(--line-strong);
  border-top: 2px solid var(--cyan);
  border-radius: var(--contact-card-radius);
  box-shadow: var(--shadow-1);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.page-contact .contact-card__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .contact-card__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 23px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .contact-card__intro {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mute);
}

.page-contact .contact-card__list {
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--line-strong);
}

.page-contact .contact-card__row:first-child {
  padding-top: 0;
}

.page-contact .contact-card__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .contact-card__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .contact-card__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__row dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease);
}

.page-contact .contact-card__row dd a:hover,
.page-contact .contact-card__row dd a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .contact-card__use {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mute);
}

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

/* ============ 对接流程 ============ */
.page-contact .contact-flow {
  padding: clamp(44px, 6vw, 96px) 0;
}

.page-contact .flow-list {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-contact .flow-step {
  position: relative;
  padding: 24px 20px 22px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: var(--contact-card-radius);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 0;
  width: 30px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .flow-step:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-1);
}

.page-contact .flow-step__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .flow-step__title {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-contact .flow-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
}

.page-contact .flow-note {
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 18px 20px;
  border-left: 2px solid var(--amber);
  background: var(--glass-1);
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
  max-width: 62ch;
}

/* ============ 站点信息 ============ */
.page-contact .contact-site {
  padding: 0 0 clamp(44px, 6vw, 88px);
}

.page-contact .contact-texture {
  position: relative;
  margin: 0 0 clamp(28px, 4vw, 48px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--contact-card-radius);
}

.page-contact .contact-texture img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-contact .contact-site__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .site-list {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .site-list__row {
  display: grid;
  grid-template-columns: minmax(80px, 120px) 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .site-list__row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--stone);
  line-height: 1.7;
}

.page-contact .site-list__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .contact-site__side {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-contact .contact-site__note {
  margin: 0;
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mute);
  background: var(--glass-1);
  border-left: 2px solid var(--stone);
  border-radius: 0 var(--contact-card-radius) var(--contact-card-radius) 0;
}

.page-contact .contact-site__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 224, 0.4);
}

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

/* ============ 备案收束线 ============ */
.page-contact .contact-strip {
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line);
  background: var(--ink-2);
  padding: clamp(20px, 3vw, 28px) 0;
}

.page-contact .contact-strip__line {
  margin: 0;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mute);
  text-align: center;
  overflow-wrap: anywhere;
}

/* ============ 断点 ============ */
@media (min-width: 720px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .direction {
    grid-template-columns: minmax(64px, 96px) 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 1.75fr) minmax(272px, 1fr);
    align-items: start;
  }

  .page-contact .contact-grid__aside {
    position: sticky;
    top: var(--contact-aside-top);
  }

  .page-contact .contact-site__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  }
}

@media (min-width: 1080px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .direction,
  .page-contact .flow-step,
  .page-contact .contact-hero__jump a,
  .page-contact .direction__num {
    transition: none;
  }
  .page-contact .flow-step:hover {
    transform: none;
  }
}