.page-contact {
  --pc-line: rgba(138, 90, 43, 0.24);
  --pc-line-soft: rgba(11, 27, 43, 0.1);
  --pc-card: #F7F0E4;
  background: var(--paper-100);
  color: var(--ink-900);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: 26px 0 42px;
  isolation: isolate;
  color: var(--paper-100);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(185, 133, 74, 0.34), transparent 58%),
    radial-gradient(90% 80% at 4% 100%, rgba(111, 155, 141, 0.18), transparent 62%),
    linear-gradient(168deg, #102438, var(--ink-900) 56%, #07131f);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--brass-300), transparent);
  opacity: 0.55;
}

.page-contact .contact-hero__crumbs {
  margin-bottom: 22px;
  font-size: 13px;
}

.page-contact .contact-hero__crumbs a,
.page-contact .contact-hero__crumbs span {
  color: var(--brass-300);
}

.page-contact .contact-hero__crumbs a {
  text-decoration: none;
  border-bottom: 1px solid rgba(216, 176, 122, 0.45);
  padding-bottom: 1px;
}

.page-contact .contact-hero__eyebrow {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--brass-300);
}

.page-contact .contact-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7.2vw, 3.6rem);
  line-height: 1.22;
  letter-spacing: 0.04em;
  color: var(--paper-100);
}

.page-contact .contact-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.95;
  color: rgba(243, 235, 221, 0.82);
}

.page-contact .contact-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .contact-tag {
  display: inline-block;
  padding: 6px 15px;
  border-radius: 999px;
  border: 1px solid rgba(216, 176, 122, 0.42);
  background: rgba(243, 235, 221, 0.07);
  color: var(--brass-300);
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 1.5;
}

.page-contact .contact-hero__meta {
  margin: 22px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: rgba(243, 235, 221, 0.6);
}

/* ---------- 主栅格 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "types"
    "plate"
    "flow"
    "prepare"
    "reply";
  gap: 46px;
  padding-block: 44px 56px;
}

.page-contact .contact-types { grid-area: types; }
.page-contact .contact-plate { grid-area: plate; }
.page-contact .contact-flow { grid-area: flow; }
.page-contact .contact-prepare { grid-area: prepare; }
.page-contact .contact-reply { grid-area: reply; }

/* ---------- 章节头 ---------- */
.page-contact .contact-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

.page-contact .contact-head .section-head__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--brass-700);
}

.page-contact .contact-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.5rem, 4.4vw, 2rem);
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--ink-900);
}

.page-contact .contact-head__sub {
  margin: 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--slate-600);
}

/* ---------- 合作类型 ---------- */
.page-contact .type-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .type-item {
  padding: 20px 18px 14px;
  border-radius: var(--radius-md);
  border-left: 3px solid var(--brass-500);
  background: linear-gradient(180deg, var(--pc-card), var(--paper-100));
  box-shadow: 0 1px 0 rgba(11, 27, 43, 0.05), 0 16px 30px -26px rgba(11, 27, 43, 0.7);
}

.page-contact .type-item__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .type-item__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brass-700);
}

.page-contact .type-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.22rem;
  letter-spacing: 0.05em;
  color: var(--ink-900);
}

.page-contact .type-item__meta {
  margin: 12px 0 0;
}

.page-contact .type-item__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  padding: 11px 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .type-item__row dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--brass-700);
}

.page-contact .type-item__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-700);
}

.page-contact .type-item__row a,
.page-contact .checklist a,
.page-contact .fold__inner a {
  color: var(--brass-700);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-contact .type-item__row a:hover,
.page-contact .checklist a:hover,
.page-contact .fold__inner a:hover {
  color: var(--ink-900);
}

/* ---------- 联络铜牌 ---------- */
.page-contact .contact-plate__inner {
  position: relative;
  padding: 16px 16px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(216, 176, 122, 0.34);
  color: var(--paper-100);
  background:
    radial-gradient(120% 70% at 100% 0%, rgba(216, 176, 122, 0.3), transparent 60%),
    linear-gradient(160deg, #173953, var(--ink-900) 62%, #07131f);
  box-shadow: inset 0 1px 0 rgba(243, 235, 221, 0.16), 0 26px 50px -34px rgba(11, 27, 43, 0.9);
  overflow: hidden;
}

.page-contact .contact-plate__inner::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: calc(var(--radius-lg) - 8px);
  border: 1px solid rgba(216, 176, 122, 0.18);
  pointer-events: none;
}

.page-contact .contact-plate__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
  background: var(--ink-700);
}

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

.page-contact .contact-plate__kicker {
  margin: 0 0 8px;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--brass-300);
}

.page-contact .contact-plate__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 4.4vw, 1.6rem);
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--paper-100);
}

.page-contact .contact-plate__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-list__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 12px;
  padding: 11px 13px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(216, 176, 122, 0.22);
  background: rgba(243, 235, 221, 0.06);
}

.page-contact .contact-list__k {
  grid-column: 1 / -1;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--brass-300);
}

.page-contact .contact-list__v {
  min-width: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--paper-100);
  word-break: break-word;
}

.page-contact .contact-list__v.mono {
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
}

.page-contact .copy-btn {
  justify-self: end;
  padding: 6px 14px;
  border: 0;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-900);
  background: linear-gradient(180deg, var(--brass-300), var(--brass-500));
  cursor: pointer;
  transition: filter var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-contact .copy-btn:hover {
  filter: brightness(1.08);
}

.page-contact .copy-btn:active {
  transform: translateY(1px);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--celadon-500);
  outline-offset: 2px;
}

.page-contact .copy-btn[data-copied="true"] {
  background: var(--celadon-500);
  color: #ffffff;
}

.page-contact .contact-plate__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.9;
  color: rgba(243, 235, 221, 0.76);
}

.page-contact .contact-plate__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-contact .contact-plate__links .btn {
  font-size: 13px;
  border-color: rgba(216, 176, 122, 0.5);
  color: var(--brass-300);
  background: transparent;
}

.page-contact .contact-plate__links .btn:hover {
  background: rgba(216, 176, 122, 0.14);
  color: var(--paper-100);
}

/* ---------- 流程刻度 ---------- */
.page-contact .stage-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .stage {
  position: relative;
  margin-left: 13px;
  padding: 0 0 26px 42px;
  border-left: 1px solid var(--pc-line);
}

.page-contact .stage:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .stage__num {
  position: absolute;
  left: -14px;
  top: 0;
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--brass-300);
  background: var(--ink-900);
  box-shadow: 0 0 0 4px var(--paper-100);
}

.page-contact .stage__title {
  margin: 2px 0 6px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.14rem;
  letter-spacing: 0.05em;
  color: var(--ink-900);
}

.page-contact .stage__body p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.92;
  color: var(--slate-600);
}

/* ---------- 到访准备 ---------- */
.page-contact .prepare-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-contact .prepare-grid__media {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--paper-200);
}

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

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .checklist__item {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-700);
}

.page-contact .checklist__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 16px;
  height: 16px;
  border-radius: 5px;
  border: 1.5px solid var(--celadon-500);
  background: var(--celadon-100);
}

/* ---------- 回复时效 ---------- */
.page-contact .reply-panel {
  padding: 22px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--paper-200);
  background: linear-gradient(180deg, #EEE1CD, var(--paper-100));
}

.page-contact .reply-panel__lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.92;
  color: var(--ink-700);
}

.page-contact .fold-group {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.page-contact .fold {
  border-top: 1px solid var(--pc-line);
}

.page-contact .fold__trigger {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 14px 2px;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  color: var(--ink-900);
}

.page-contact .fold__trigger:focus-visible {
  outline: 2px solid var(--celadon-500);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-contact .fold__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--brass-700);
}

.page-contact .fold__label {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-900);
}

.page-contact .fold__icon {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--brass-500);
  border-bottom: 2px solid var(--brass-500);
  transform: rotate(45deg);
  transition: transform var(--dur) var(--ease);
}

.page-contact .fold__trigger[aria-expanded="true"] .fold__icon {
  transform: rotate(-135deg);
}

.page-contact .fold__panel {
  padding: 0 2px 12px;
}

.page-contact .fold__inner p {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.92;
  color: var(--slate-600);
}

/* ---------- 结尾联络条 ---------- */
.page-contact .contact-closing {
  display: grid;
  gap: 16px;
  margin-bottom: 54px;
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(216, 176, 122, 0.3);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(185, 133, 74, 0.32), transparent 62%),
    linear-gradient(120deg, var(--ink-900), var(--ink-700));
  color: var(--paper-100);
}

.page-contact .contact-closing__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(243, 235, 221, 0.86);
}

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

.page-contact .contact-closing__actions .btn--line {
  border-color: rgba(216, 176, 122, 0.55);
  color: var(--brass-300);
  background: transparent;
}

.page-contact .contact-closing__actions .btn--line:hover {
  background: rgba(216, 176, 122, 0.14);
  color: var(--paper-100);
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-contact .type-item__row {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .contact-hero {
    padding: 34px 0 54px;
  }

  .page-contact .contact-hero__lede {
    font-size: 17px;
  }

  .page-contact .contact-plate__inner {
    padding: 18px 18px 24px;
  }

  .page-contact .contact-closing {
    padding: 28px 26px;
  }
}

@media (min-width: 720px) {
  .page-contact .prepare-grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }

  .page-contact .contact-closing {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
  }

  .page-contact .reply-panel {
    padding: 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 336px) minmax(0, 1fr);
    grid-template-areas:
      "plate types"
      "plate flow"
      "plate prepare"
      "plate reply";
    gap: 52px 56px;
    padding-block: 62px 72px;
    align-items: start;
  }

  .page-contact .contact-plate {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    align-self: start;
  }

  .page-contact .type-list {
    gap: 18px;
  }

  .page-contact .stage {
    padding-left: 48px;
    padding-bottom: 30px;
  }
}

@media (min-width: 1120px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(0, 372px) minmax(0, 1fr);
    gap: 56px 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .fold__icon {
    transition: none;
  }
}