.page-contact {
  padding-inline: clamp(16px, 3vw, 36px);
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--ink);
}

.page-contact .breadcrumbs {
  padding: 20px 0 6px;
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: 14px;
  padding: clamp(28px, 4.5vw, 56px);
  background: var(--navy);
  color: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
  isolation: isolate;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: auto -14% -46% 34%;
  height: 78%;
  background: var(--grass);
  opacity: 0.22;
  transform: rotate(-8deg);
  border-radius: 46% 0 0 0;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: -18% -8% auto auto;
  width: 46%;
  height: 52%;
  background: var(--red);
  opacity: 0.14;
  transform: rotate(11deg);
  border-radius: 0 0 0 60%;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-hero__copy {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .eyebrow {
  color: var(--grass-soft);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 5.2vw, 48px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: 0.02em;
  margin: 12px 0 0;
  color: var(--paper);
  max-width: 18em;
}

.page-contact .contact-hero .lede {
  margin: 18px 0 0;
  color: rgba(246, 241, 230, 0.86);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  max-width: 46em;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .contact-hero .btn--ghost {
  color: var(--paper);
  border-color: rgba(246, 241, 230, 0.45);
}

.page-contact .contact-hero .btn--ghost:hover,
.page-contact .contact-hero .btn--ghost:focus-visible {
  color: var(--grass-soft);
  border-color: var(--grass-soft);
}

.page-contact .contact-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(246, 241, 230, 0.2);
  background: rgba(246, 241, 230, 0.06);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}

/* ---------- 通用分区 ---------- */
.page-contact .contact-section {
  margin-top: clamp(44px, 7vw, 88px);
}

.page-contact .section-head {
  max-width: 62ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: 0.015em;
  color: var(--navy);
  margin: 8px 0 0;
}

.page-contact .section-head__note {
  margin: 14px 0 0;
  color: var(--slate);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 24px;
  background: var(--bright);
  border: 1px solid var(--sand);
  border-top: 3px solid var(--navy);
  border-radius: var(--radius);
}

.page-contact .channel-card__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-contact .channel-card__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--navy);
  word-break: break-all;
}

.page-contact .channel-card__v--text {
  font-family: var(--font-sans);
  font-size: 17px;
  letter-spacing: 0.01em;
  word-break: normal;
}

.page-contact .channel-card__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 来意分类 ---------- */
.page-contact .topic-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: start;
}

.page-contact .topic-card {
  background: var(--bright);
  border: 1px solid var(--sand);
  border-top: 3px solid var(--grass);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .topic-card summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-serif);
  font-size: clamp(17px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--navy);
}

.page-contact .topic-card summary::-webkit-details-marker {
  display: none;
}

.page-contact .topic-card summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--grass);
  transition: color var(--dur) var(--ease);
}

.page-contact .topic-card[open] summary::after {
  content: "\2212";
  color: var(--grass-deep);
}

.page-contact .topic-card summary:focus-visible {
  outline: 2px solid var(--grass);
  outline-offset: -3px;
}

.page-contact .topic-card__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--grass);
}

.page-contact .topic-card__body {
  padding: 0 22px 22px;
  border-top: 1px dashed var(--sand);
  margin-top: 0;
  padding-top: 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .topic-card__body p {
  margin: 0 0 12px;
}

.page-contact .topic-card__body p:last-child {
  margin-bottom: 0;
}

.page-contact .topic-card__body a {
  color: var(--grass-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .topic-card__body a:hover {
  color: var(--red);
}

/* ---------- 合作方式 ---------- */
.page-contact .partner-band {
  position: relative;
  padding: clamp(28px, 5vw, 56px);
  background: var(--navy);
  color: var(--paper);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .partner-band::before {
  content: "";
  position: absolute;
  inset: auto 42% -40% -12%;
  height: 76%;
  background: var(--cyan);
  opacity: 0.16;
  transform: rotate(6deg);
  border-radius: 0 60% 0 0;
  pointer-events: none;
}

.page-contact .partner-band .eyebrow {
  position: relative;
  color: var(--grass-soft);
}

.page-contact .partner-band h2 {
  position: relative;
  font-family: var(--font-serif);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--paper);
  margin: 8px 0 clamp(20px, 3vw, 32px);
}

.page-contact .partner-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .partner-card {
  padding: 22px 24px;
  background: rgba(246, 241, 230, 0.07);
  border: 1px solid rgba(246, 241, 230, 0.18);
  border-left: 3px solid var(--grass-soft);
  border-radius: var(--radius);
}

.page-contact .partner-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-contact .partner-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(246, 241, 230, 0.84);
}

/* ---------- 提交信息 ---------- */
.page-contact .checklist-band {
  padding: clamp(26px, 4.5vw, 48px);
  background: var(--sand);
  border-radius: var(--radius);
}

.page-contact .checklist-band__head {
  max-width: 60ch;
}

.page-contact .checklist-band h2 {
  font-family: var(--font-serif);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--navy);
  margin: 8px 0 0;
}

.page-contact .checklist-band__note {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-contact .checklist {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-contact .checklist li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  background: var(--bright);
  border-left: 3px solid var(--grass);
  border-radius: var(--radius);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}

.page-contact .checklist__no {
  flex: none;
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  color: var(--grass-deep);
}

/* ---------- 对接流程 ---------- */
.page-contact .flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .flow__step {
  position: relative;
  padding-top: 48px;
}

.page-contact .flow__node {
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--grass);
  color: var(--bright);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.04em;
}

.page-contact .flow__title {
  margin: 0 0 8px;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  color: var(--navy);
}

.page-contact .flow__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
  max-width: 30em;
}

.page-contact .flow__time {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(46, 125, 79, 0.12);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--grass-deep);
}

.page-contact .flow-figure {
  margin: clamp(32px, 5vw, 56px) 0 0;
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bright);
}

.page-contact .flow-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 5;
  object-fit: cover;
}

.page-contact .flow-figure .figure__caption {
  padding: 14px 20px 18px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  border-top: 1px solid var(--sand);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .checklist {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: center;
  }

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

  .page-contact .topic-list {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .page-contact .flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-contact .flow__step::after {
    content: "";
    position: absolute;
    top: 17px;
    left: 46px;
    right: -6px;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--sand) 0 9px, transparent 9px 16px);
  }

  .page-contact .flow__step:last-child::after {
    display: none;
  }

  .page-contact .flow__time {
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .page-contact .flow__step:hover .flow__time,
  .page-contact .flow__step:focus-within .flow__time {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .flow__time {
    opacity: 1 !important;
    transform: none !important;
    transition: none;
  }

  .page-contact .topic-card summary::after {
    transition: none;
  }
}