.page-contact {
  --pc-cut: 18px;
  --pc-shadow: 0 24px 52px -34px rgba(11, 42, 74, .55);
  --pc-line: rgba(11, 42, 74, .14);
  --pc-line-soft: rgba(11, 42, 74, .07);
  --pc-glass: rgba(247, 250, 248, .1);
  background: var(--c-mist);
  color: var(--c-ink);
  padding-bottom: clamp(32px, 5vw, 64px);
  overflow-x: clip;
}

.page-contact .breadcrumb {
  padding-block: clamp(14px, 2vw, 22px);
  font-size: .8125rem;
  color: var(--c-deep-mid);
  display: flex;
  gap: .5rem;
  align-items: center;
}

.page-contact .breadcrumb a {
  color: var(--c-celadon-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 127, 120, .4);
}

.page-contact .breadcrumb a:hover {
  color: var(--c-amber-deep);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  color: var(--c-mist);
  background:
    radial-gradient(circle at 84% 14%, rgba(47, 127, 120, .46), transparent 56%),
    radial-gradient(circle at 8% 92%, rgba(232, 162, 58, .24), transparent 50%),
    linear-gradient(158deg, #0B2A4A 0%, #173A5E 58%, #244A6E 100%);
  padding-block: clamp(28px, 4.5vw, 52px) clamp(34px, 6vw, 72px);
  border-bottom: 3px solid var(--c-amber);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(247, 250, 248, .055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(247, 250, 248, .055) 1px, transparent 1px);
  background-size: 58px 58px;
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 42px);
}

.page-contact .route-id {
  display: inline-block;
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-amber);
  border: 1px solid rgba(232, 162, 58, .5);
  border-radius: 999px;
  padding: .3rem .8rem;
  margin: 0 0 clamp(14px, 2vw, 20px);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.95rem, 5.4vw, 3.35rem);
  line-height: 1.12;
  letter-spacing: -.02em;
  margin: 0 0 clamp(14px, 2vw, 20px);
  color: #fff;
}

.page-contact .contact-hero .lede {
  font-size: clamp(.98rem, 2.2vw, 1.125rem);
  line-height: 1.78;
  color: rgba(247, 250, 248, .86);
  max-width: 34em;
  margin: 0;
}

.page-contact .hero-facts {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .hero-facts li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding: 12px 16px;
  background: var(--pc-glass);
  border-left: 3px solid var(--c-amber);
  border-radius: 0 12px 12px 0;
  backdrop-filter: blur(4px);
}

.page-contact .hero-facts .mono {
  font-size: .75rem;
  color: var(--c-amber);
  padding-top: .22rem;
}

.page-contact .hero-facts strong {
  display: block;
  font-size: .95rem;
  letter-spacing: .01em;
  margin-bottom: .18rem;
  color: #fff;
}

.page-contact .hero-facts p {
  margin: 0;
  font-size: .85rem;
  line-height: 1.68;
  color: rgba(247, 250, 248, .78);
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-contact .contact-hero__media {
  margin: 0;
  border-radius: var(--pc-cut);
  overflow: hidden;
  border: 1px solid rgba(247, 250, 248, .18);
  background: rgba(16, 42, 46, .35);
  box-shadow: var(--pc-shadow);
}

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

.page-contact .contact-hero__caption {
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.6;
  letter-spacing: .04em;
  color: rgba(247, 250, 248, .7);
  padding: .7rem 1rem;
  border-top: 1px solid rgba(247, 250, 248, .14);
}

/* ---------- 章节共同头部 ---------- */
.page-contact .section-head {
  max-width: 46rem;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .section-head__id {
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-celadon-deep);
  margin: 0 0 .5rem;
}

.page-contact .section-head h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.35rem);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--c-deep);
  margin: 0 0 .7rem;
}

.page-contact .section-head__lede {
  margin: 0;
  font-size: .98rem;
  line-height: 1.78;
  color: rgba(16, 42, 46, .78);
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-types {
  padding-block: clamp(40px, 6vw, 76px);
  background:
    linear-gradient(180deg, var(--c-mist) 0%, rgba(244, 239, 230, .55) 100%);
}

.page-contact .type-grid {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-contact .type-card {
  background: var(--c-mist);
  border: 1px solid var(--pc-line);
  border-radius: var(--pc-cut);
  box-shadow: var(--pc-shadow);
  overflow: hidden;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .type-card[open] {
  border-color: rgba(47, 127, 120, .5);
}

.page-contact .type-card summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  background: linear-gradient(120deg, rgba(47, 127, 120, .09), transparent 62%);
}

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

.page-contact .type-card summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--c-celadon-deep);
  justify-self: end;
}

.page-contact .type-card[open] summary::after {
  content: "–";
  color: var(--c-amber-deep);
}

.page-contact .type-card__id {
  font-size: .72rem;
  color: var(--c-amber-deep);
  border: 1px solid rgba(232, 162, 58, .45);
  border-radius: 6px;
  padding: .12rem .38rem;
}

.page-contact .type-card__name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--c-deep);
}

.page-contact .type-card__body {
  padding: 4px 18px 18px;
  border-top: 1px dashed var(--pc-line-soft);
}

.page-contact .type-card__rows {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-contact .type-card__rows dt {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--c-celadon-deep);
  margin-bottom: .2rem;
}

.page-contact .type-card__rows dd {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: rgba(16, 42, 46, .82);
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-channels {
  padding-block: clamp(40px, 6vw, 76px);
  background: var(--c-deep);
  color: var(--c-mist);
}

.page-contact .channels-grid {
  display: grid;
  gap: clamp(22px, 4vw, 38px);
  align-items: start;
}

.page-contact .channel-card {
  background: rgba(247, 250, 248, .07);
  border: 1px solid rgba(247, 250, 248, .18);
  border-radius: var(--pc-cut);
  padding: clamp(20px, 3vw, 30px);
  backdrop-filter: blur(6px);
}

.page-contact .channel-card__id {
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--c-amber);
  margin: 0 0 .6rem;
}

.page-contact .channel-card h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.4rem, 3vw, 1.95rem);
  margin: 0 0 clamp(16px, 2.4vw, 22px);
  color: #fff;
}

.page-contact .channel-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .channel-list > div {
  padding-block: 12px;
  border-bottom: 1px dashed rgba(247, 250, 248, .18);
  display: grid;
  gap: .25rem;
}

.page-contact .channel-list dt {
  font-size: .75rem;
  letter-spacing: .08em;
  color: rgba(247, 250, 248, .62);
}

.page-contact .channel-list dd {
  margin: 0;
  font-size: 1rem;
  color: #fff;
  word-break: break-word;
}

.page-contact .channel-list dd.mono {
  font-size: .92rem;
  letter-spacing: .01em;
  color: var(--c-amber);
}

.page-contact .channel-note {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  font-size: .88rem;
  line-height: 1.76;
  color: rgba(247, 250, 248, .78);
}

.page-contact .channel-card__btn {
  margin-top: clamp(16px, 2.4vw, 22px);
}

.page-contact .channel-map {
  display: grid;
  gap: clamp(14px, 2vw, 18px);
}

.page-contact .channel-map__figure {
  margin: 0;
  border-radius: var(--pc-cut);
  overflow: hidden;
  border: 1px solid rgba(247, 250, 248, .18);
  background: rgba(16, 42, 46, .5);
}

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

.page-contact .channel-map__caption {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: rgba(247, 250, 248, .66);
  padding: .65rem 1rem;
  border-top: 1px solid rgba(247, 250, 248, .14);
}

.page-contact .channel-map__panel {
  background: var(--c-glass);
  color: var(--c-ink);
  border-radius: var(--pc-cut);
  padding: clamp(16px, 2.4vw, 22px);
  border-left: 4px solid var(--c-celadon);
}

.page-contact .channel-map__label {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--c-celadon-deep);
  margin: 0 0 .5rem;
}

.page-contact .channel-map__panel p:last-child {
  margin: 0;
  font-size: .9rem;
  line-height: 1.74;
  color: rgba(16, 42, 46, .84);
}

/* ---------- 服务范围 ---------- */
.page-contact .contact-scope {
  padding-block: clamp(40px, 6vw, 76px);
  background: var(--c-sand);
}

.page-contact .scope-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(10px, 1.6vw, 16px);
}

.page-contact .scope-item {
  background: var(--c-mist);
  border-radius: 14px;
  border: 1px solid var(--pc-line-soft);
  padding: clamp(14px, 2vw, 20px);
  position: relative;
}

.page-contact .scope-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(14px, 2vw, 20px);
  width: 34px;
  height: 3px;
  background: var(--c-celadon);
  border-radius: 0 0 3px 3px;
}

.page-contact .scope-item__num {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.2vw, 2.3rem);
  line-height: 1.05;
  color: var(--c-deep);
  letter-spacing: -.02em;
}

.page-contact .scope-item__unit {
  font-size: .55em;
  font-weight: 700;
  margin-left: .12em;
  color: var(--c-celadon-deep);
}

.page-contact .scope-item__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: var(--c-amber-deep);
  margin-top: .35rem;
}

.page-contact .scope-item__text {
  margin: .55rem 0 0;
  font-size: .84rem;
  line-height: 1.7;
  color: rgba(16, 42, 46, .74);
}

.page-contact .scope-note {
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  font-size: .88rem;
  line-height: 1.76;
  color: rgba(16, 42, 46, .72);
  padding-left: 14px;
  border-left: 3px solid var(--c-indigo);
}

/* ---------- 合作流程 ---------- */
.page-contact .contact-flow {
  padding-block: clamp(40px, 6vw, 76px);
  background: var(--c-mist);
}

.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: none;
}

.page-contact .flow-item {
  position: relative;
  background: #fff;
  border: 1px solid var(--pc-line);
  border-radius: 14px;
  box-shadow: var(--pc-shadow);
  overflow: hidden;
}

.page-contact .flow-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--c-celadon), rgba(47, 127, 120, .15));
}

.page-contact .flow-item[open]::before,
.page-contact .flow-item:has(details[open])::before {
  background: linear-gradient(180deg, var(--c-amber), rgba(232, 162, 58, .2));
}

.page-contact .flow-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 15px 18px 15px 22px;
}

.page-contact .flow-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .flow-step {
  font-size: .8rem;
  color: var(--c-celadon-deep);
  border: 1px solid rgba(47, 127, 120, .35);
  border-radius: 6px;
  padding: .1rem .4rem;
}

.page-contact .flow-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  color: var(--c-deep);
}

.page-contact .flow-item summary::after {
  content: "›";
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--c-celadon-deep);
  transform: rotate(90deg);
  transition: transform .25s var(--ease);
}

.page-contact .flow-item:has(details[open]) summary::after {
  transform: rotate(270deg);
  color: var(--c-amber-deep);
}

.page-contact .flow-body {
  padding: 0 18px 16px 22px;
  border-top: 1px dashed var(--pc-line-soft);
  margin-top: 2px;
}

.page-contact .flow-body p {
  margin: 12px 0 0;
  font-size: .9rem;
  line-height: 1.75;
  color: rgba(16, 42, 46, .8);
}

.page-contact .flow-body__out {
  font-size: .76rem !important;
  letter-spacing: .04em;
  color: var(--c-celadon-deep) !important;
}

/* ---------- 反馈准备 ---------- */
.page-contact .contact-prepare {
  padding-block: clamp(40px, 6vw, 76px);
  background:
    radial-gradient(circle at 88% 8%, rgba(75, 63, 114, .1), transparent 52%),
    var(--c-sand);
}

.page-contact .prepare-grid {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  align-items: start;
}

.page-contact .prepare-main h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.45rem, 3.2vw, 2.1rem);
  line-height: 1.24;
  color: var(--c-deep);
  margin: 0 0 clamp(16px, 2.4vw, 22px);
}

.page-contact .prepare-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .prepare-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  background: var(--c-mist);
  border-radius: 12px;
  border: 1px solid var(--pc-line-soft);
  padding: 12px 14px;
  font-size: .9rem;
  line-height: 1.72;
  color: rgba(16, 42, 46, .84);
}

.page-contact .prepare-list__n {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--c-celadon);
  color: #fff;
  font-size: .74rem;
  margin-top: .16rem;
}

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

.page-contact .prepare-card {
  background: var(--c-deep);
  color: var(--c-mist);
  border-radius: var(--pc-cut);
  padding: clamp(18px, 2.6vw, 24px);
  border-bottom: 3px solid var(--c-celadon);
}

.page-contact .prepare-card--sand {
  background: #fff;
  color: var(--c-ink);
  border-bottom-color: var(--c-indigo);
  border: 1px solid var(--pc-line);
  border-bottom: 3px solid var(--c-indigo);
}

.page-contact .prepare-card__label {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--c-amber);
  margin: 0 0 .5rem;
}

.page-contact .prepare-card--sand .prepare-card__label {
  color: var(--c-indigo);
}

.page-contact .prepare-card p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.76;
  color: rgba(247, 250, 248, .82);
}

.page-contact .prepare-card--sand p {
  color: rgba(16, 42, 46, .8);
}

.page-contact .prepare-link {
  display: inline-block;
  margin-top: .85rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .02em;
  color: var(--c-amber);
  text-decoration: none;
  border-bottom: 1px solid rgba(232, 162, 58, .55);
  padding-bottom: 2px;
}

.page-contact .prepare-link:hover {
  color: #fff;
  border-bottom-color: #fff;
}

.page-contact .prepare-card--sand .prepare-link {
  color: var(--c-indigo);
  border-bottom-color: rgba(75, 63, 114, .45);
}

.page-contact .prepare-card--sand .prepare-link:hover {
  color: var(--c-wine);
  border-bottom-color: var(--c-wine);
}

/* ---------- 结尾入口 ---------- */
.page-contact .contact-cta {
  padding-block: clamp(30px, 4.5vw, 52px);
  background: linear-gradient(120deg, var(--c-deep) 0%, var(--c-deep-soft) 60%, var(--c-celadon-deep) 100%);
  color: var(--c-mist);
}

.page-contact .cta-inner {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  align-items: center;
}

.page-contact .cta-inner h2 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  margin: 0 0 .55rem;
  color: #fff;
}

.page-contact .cta-inner p {
  margin: 0;
  font-size: .92rem;
  line-height: 1.74;
  color: rgba(247, 250, 248, .82);
}

.page-contact .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 3px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 720px) {
  .page-contact .type-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .scope-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .flow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
  }

  .page-contact .channels-grid {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  }

  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
  }

  .page-contact .flow-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .type-card,
  .page-contact .flow-item summary::after {
    transition: none;
  }
}