.page-contact {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
}

.page-contact a {
  color: inherit;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: calc(var(--header-h) + 96px) 0 64px;
  background: var(--ink);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -190px;
  right: -150px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle at 42% 42%, rgba(41, 211, 162, 0.22), rgba(41, 211, 162, 0) 68%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: -10%;
  bottom: -140px;
  width: 72%;
  height: 320px;
  border-radius: var(--r-xl);
  background: linear-gradient(115deg, rgba(217, 118, 74, 0.2), rgba(217, 118, 74, 0));
  transform: skewY(-7deg);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 44px;
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

.page-contact .breadcrumb a {
  color: var(--snow);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

.page-contact .breadcrumb a:hover {
  color: var(--signal);
  border-bottom-color: var(--signal);
}

.page-contact .contact-eyebrow {
  margin: 22px 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-contact .contact-hero h1 {
  margin: 0 0 20px;
  max-width: 15ch;
  font-size: clamp(30px, 7.4vw, 54px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-contact .contact-hero__intro {
  margin: 0 0 34px;
  max-width: 42ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--snow);
}

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

.page-contact .contact-card {
  padding: 20px 22px 22px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, var(--panel), var(--ink-deep));
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--signal);
  transform: translateY(-3px);
  background: linear-gradient(160deg, var(--panel-lift), var(--panel));
}

.page-contact .contact-card__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-contact .contact-card__value {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__note {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-contact .contact-copy {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--snow);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .contact-copy:hover {
  border-color: var(--signal);
  color: var(--signal);
}

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

.page-contact .contact-copy[data-copied="true"] {
  border-color: var(--signal);
  background: rgba(41, 211, 162, 0.14);
  color: var(--signal);
}

.page-contact .contact-side__title {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .coop-list {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .coop-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  gap: 4px 14px;
  padding: 18px 20px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  background: rgba(22, 38, 61, 0.72);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background 160ms var(--ease);
}

.page-contact .coop-item:hover {
  border-color: var(--signal);
  transform: translateY(-3px);
  background: var(--panel-lift);
}

.page-contact .coop-item__mark {
  position: relative;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1.5px solid var(--signal);
  border-radius: 6px;
}

.page-contact .coop-item__mark::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--signal);
  border-bottom: 2px solid var(--signal);
  transform: rotate(42deg);
}

.page-contact .coop-item__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-contact .coop-item__tag {
  align-self: start;
  padding: 3px 10px;
  border: 1px solid rgba(217, 118, 74, 0.45);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--clay-soft);
  white-space: nowrap;
}

.page-contact .coop-item__desc {
  grid-column: 2 / -1;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .media {
  position: relative;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-xl);
  background: var(--panel);
}

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

.page-contact .contact-side__media {
  aspect-ratio: 3 / 2;
  border-color: rgba(168, 203, 224, 0.28);
}

/* ---------- 编号章节骨架 ---------- */

.page-contact .section-head {
  display: grid;
  gap: 8px;
  margin-bottom: 34px;
}

.page-contact .section-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6.4vw, 46px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--clay);
}

.page-contact .section-title {
  margin: 0;
  font-size: clamp(22px, 4.6vw, 33px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-contact .section-lead {
  margin: 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.78;
}

/* ---------- 01 咨询信息 ---------- */

.page-contact .contact-brief {
  padding: 64px 0 72px;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  background: var(--mist);
  color: var(--ink);
}

.page-contact .contact-brief .section-title,
.page-contact .contact-flow .section-title {
  color: var(--ink);
}

.page-contact .contact-brief .section-lead,
.page-contact .contact-flow .section-lead {
  color: rgba(14, 26, 43, 0.68);
}

.page-contact .brief-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .brief-card {
  padding: 22px 22px 24px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  background: var(--white);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .brief-card:hover {
  border-color: var(--signal-deep);
  transform: translateY(-3px);
}

.page-contact .brief-card::before {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  margin-bottom: 16px;
  border-radius: var(--r-pill);
  background: var(--clay);
}

.page-contact .brief-card__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--signal-deep);
}

.page-contact .brief-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(14, 26, 43, 0.8);
}

/* ---------- 02 回信节奏 ---------- */

.page-contact .contact-rhythm {
  padding: 68px 0 72px;
  background: var(--ink-deep);
}

.page-contact .rhythm {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
}

.page-contact .rhythm__title {
  margin: 12px 0 18px;
  font-size: clamp(22px, 4.6vw, 30px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .rhythm__big {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(52px, 13vw, 84px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--signal);
}

.page-contact .rhythm__big span {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--snow);
}

.page-contact .rhythm__desc {
  margin: 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate);
}

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

.page-contact .rhythm__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .rhythm__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--clay-soft);
}

.page-contact .rhythm__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--snow);
}

/* ---------- 03 合作流程 ---------- */

.page-contact .contact-flow {
  padding: 64px 0 76px;
  border-radius: var(--r-xl) var(--r-xl) 0 0;
  background: var(--mist);
  color: var(--ink);
}

.page-contact .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .flow-step {
  position: relative;
  min-width: 0;
}

.page-contact .flow-details {
  position: relative;
  height: 100%;
  padding: 20px 20px 18px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-lg);
  background: var(--white);
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}

.page-contact .flow-details:hover,
.page-contact .flow-details[open] {
  border-color: rgba(217, 118, 74, 0.6);
}

.page-contact .flow-summary {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding-right: 34px;
  list-style: none;
  cursor: pointer;
}

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

.page-contact .flow-summary::after {
  content: "+";
  position: absolute;
  top: -2px;
  right: 0;
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line-light);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--clay);
}

.page-contact .flow-details[open] .flow-summary::after {
  content: "−";
  border-color: rgba(217, 118, 74, 0.5);
}

.page-contact .flow-summary:focus-visible {
  outline: 2px solid var(--signal-deep);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--clay);
}

.page-contact .flow-name {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .flow-text {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(14, 26, 43, 0.78);
}

.page-contact .flow-figure {
  margin: 34px 0 0;
}

.page-contact .flow-figure__frame {
  aspect-ratio: 16 / 9;
  max-height: 440px;
  border-color: var(--line-light);
  border-radius: var(--r-xl);
  background: var(--snow);
}

.page-contact .flow-figure__caption {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(14, 26, 43, 0.62);
}

/* ---------- 站点信息 ---------- */

.page-contact .contact-meta {
  padding: 56px 0 60px;
  background: var(--ink);
}

.page-contact .meta-strip {
  padding: 26px 24px 28px;
  border: 1px solid var(--line-dark);
  border-radius: var(--r-lg);
  background: rgba(22, 38, 61, 0.55);
}

.page-contact .meta-strip__title {
  margin: 0 0 20px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .meta-list {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line-dark);
}

.page-contact .meta-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-contact .meta-row dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate);
}

.page-contact .meta-row dd {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .meta-strip__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--slate);
}

.page-contact .meta-strip__note a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 120ms var(--ease);
}

.page-contact .meta-strip__note a:hover {
  color: var(--clay-soft);
}

/* ---------- 继续了解 ---------- */

.page-contact .contact-tail {
  padding: 0 0 68px;
  background: var(--ink);
}

.page-contact .contact-tail__text {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate);
}

.page-contact .contact-tail__text a {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 120ms var(--ease);
}

.page-contact .contact-tail__text a:hover {
  color: var(--clay-soft);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .brief-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .rhythm__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-contact .meta-row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 800px) {
  .page-contact .section-head {
    grid-template-columns: minmax(0, 96px) minmax(0, 1fr);
    column-gap: 28px;
    align-items: start;
    margin-bottom: 44px;
  }

  .page-contact .section-num {
    grid-row: 1 / span 2;
  }

  .page-contact .section-title,
  .page-contact .section-lead {
    grid-column: 2;
  }
}

@media (min-width: 860px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .flow-step::after {
    content: "";
    position: absolute;
    top: 38px;
    left: 100%;
    width: 20px;
    border-top: 2px dashed var(--clay-soft);
  }

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

@media (min-width: 960px) {
  .page-contact .contact-hero {
    padding: calc(var(--header-h) + 128px) 0 88px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-hero__side {
    margin-top: 84px;
  }

  .page-contact .contact-cards {
    max-width: 520px;
  }

  .page-contact .rhythm {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    gap: 64px;
    align-items: start;
  }

  .page-contact .contact-rhythm,
  .page-contact .contact-flow,
  .page-contact .contact-brief {
    padding-top: 76px;
  }
}

@media (min-width: 1000px) {
  .page-contact .brief-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-contact .coop-item {
    grid-template-columns: 20px minmax(0, 1fr);
  }

  .page-contact .coop-item__tag {
    grid-column: 2;
    justify-self: start;
    margin-top: 6px;
  }

  .page-contact .coop-item__desc {
    margin-top: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .coop-item,
  .page-contact .brief-card,
  .page-contact .flow-details,
  .page-contact .contact-copy {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .coop-item:hover,
  .page-contact .brief-card:hover {
    transform: none;
  }
}