.page-contact {
  --pc-radius: 30px;
  --pc-gap: clamp(18px, 3.5vw, 34px);
  --pc-hair: rgba(29, 59, 49, .13);
  --pc-card: #FFFFFF;
  padding-bottom: clamp(40px, 7vw, 84px);
}

.page-contact .contact-crumb {
  padding-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(14px, 3vw, 26px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -20%;
  width: min(780px, 100vw);
  aspect-ratio: 1 / 1;
  border-radius: 46% 54% 58% 42% / 52% 44% 56% 48%;
  background:
    radial-gradient(58% 58% at 32% 30%, rgba(247, 194, 91, .58), rgba(247, 194, 91, 0) 72%),
    radial-gradient(70% 70% at 70% 62%, rgba(240, 138, 36, .32), rgba(240, 138, 36, 0) 74%),
    radial-gradient(58% 58% at 48% 92%, rgba(226, 112, 95, .20), rgba(226, 112, 95, 0) 72%);
  pointer-events: none;
  z-index: 0;
  animation: pc-breathe 12s var(--ease) infinite;
}

@keyframes pc-breathe {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-2%, 2%, 0) scale(1.05); }
}

.page-contact .contact-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 12px 0 16px;
  max-width: 19ch;
}

.page-contact .contact-hero .section-lede {
  max-width: 48ch;
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--moss);
  margin: 0;
}

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

.page-contact .hero-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--pc-hair);
  display: grid;
  gap: 14px;
}

.page-contact .hero-facts li {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-contact .hero-fact-num {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-contact .hero-fact-label {
  font-size: 14px;
  line-height: 1.6;
  color: var(--sage);
}

.page-contact .contact-hero__media {
  margin: 0;
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--pc-radius);
  border: 1px solid var(--pc-hair);
  box-shadow: var(--shadow-soft);
}

.page-contact .media-caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--sage);
  max-width: 42ch;
}

/* ---------- 左右主体 ---------- */
.page-contact .contact-body {
  margin-top: clamp(44px, 7vw, 84px);
  display: grid;
  gap: clamp(30px, 4vw, 44px);
}

.page-contact .contact-file {
  background: linear-gradient(165deg, var(--pc-card) 0%, var(--apricot-light) 132%);
  border: 1px solid var(--pc-hair);
  border-radius: var(--pc-radius);
  padding: clamp(20px, 3vw, 28px);
  box-shadow: var(--shadow-soft);
}

.page-contact .contact-file__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-contact .contact-file .section-num {
  font-size: 34px;
  font-weight: 800;
  line-height: 1;
  color: var(--apricot);
}

.page-contact .contact-file__code {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .contact-file__title {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 28px);
  line-height: 1.35;
  font-weight: 800;
  color: var(--ink);
  margin: 8px 0 8px;
}

.page-contact .contact-file__lede {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

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

.page-contact .file-item {
  padding: 14px 16px;
  background: rgba(253, 248, 240, .88);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
}

.page-contact .file-kind {
  margin: 0 0 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .file-kind .mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-contact .file-value {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: .03em;
  color: var(--moss);
  word-break: break-word;
}

.page-contact .file-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.page-contact .contact-file__foot {
  margin: 20px 0 0;
}

/* ---------- 右侧区块 ---------- */
.page-contact .contact-flow {
  display: grid;
  gap: clamp(34px, 5vw, 62px);
}

.page-contact .contact-block + .contact-block {
  padding-top: clamp(28px, 5vw, 46px);
  border-top: 1px solid var(--pc-hair);
}

.page-contact .contact-block .section-head {
  align-items: baseline;
  gap: 12px;
}

.page-contact .contact-block .section-title {
  font-family: var(--font-head);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.32;
  font-weight: 800;
  color: var(--ink);
  margin: 0;
}

.page-contact .contact-block .section-num {
  color: var(--apricot);
  font-weight: 800;
}

.page-contact .contact-block .section-note {
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--sage);
}

.page-contact .contact-block .summary-bar {
  margin-top: 16px;
}

.page-contact .block-tail {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 勾选清单 ---------- */
.page-contact .write-checklist {
  counter-reset: done;
  margin-top: 20px;
  padding: clamp(16px, 3vw, 26px);
  background: var(--pc-card);
  border: 1px solid var(--pc-hair);
  border-radius: var(--pc-radius);
  box-shadow: var(--shadow-soft);
}

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

.page-contact .check-item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: background .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .check-item:hover {
  background: var(--sand);
  border-color: var(--line-soft);
}

.page-contact .check-item input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  margin: 3px 0 0;
  border: 1.6px solid var(--sage);
  border-radius: 7px;
  background: #fff;
  position: relative;
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .check-item input[type="checkbox"]:checked {
  background: var(--apricot);
  border-color: var(--apricot);
  counter-increment: done;
}

.page-contact .check-item input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(42deg);
  animation: pc-tick .24s var(--ease);
}

@keyframes pc-tick {
  from { opacity: 0; transform: rotate(42deg) scale(.4); }
  to { opacity: 1; transform: rotate(42deg) scale(1); }
}

.page-contact .check-item input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 2px;
}

.page-contact .check-item label {
  display: block;
  cursor: pointer;
}

.page-contact .check-title {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .check-desc {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sage);
}

.page-contact .check-progress {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--moss);
}

.page-contact .check-count {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--coral);
}

.page-contact .check-count::after {
  content: counter(done);
}

/* ---------- 响应节奏 ---------- */
.page-contact .rhythm-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .rhythm-item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--apricot-yellow);
  border-radius: var(--radius-md);
  background: linear-gradient(118deg, rgba(251, 227, 188, .62), rgba(253, 248, 240, .92) 64%);
}

.page-contact .rhythm-no {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--amber);
}

.page-contact .rhythm-title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-contact .rhythm-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--moss);
}

/* ---------- 合作共建 ---------- */
.page-contact .coop-panel {
  margin-top: 22px;
  display: grid;
  gap: 18px;
}

.page-contact .coop-lead {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--pc-radius);
  background: linear-gradient(148deg, rgba(240, 138, 36, .14), rgba(247, 194, 91, .24) 58%, rgba(253, 248, 240, .7));
}

.page-contact .coop-lead p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .coop-lead p:last-child {
  margin-bottom: 0;
}

.page-contact .coop-prep {
  padding: clamp(18px, 3vw, 24px);
  background: var(--pc-card);
  border: 1px solid var(--pc-hair);
  border-radius: var(--pc-radius);
  box-shadow: var(--shadow-soft);
}

.page-contact .coop-prep h3 {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

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

.page-contact .coop-prep li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
}

.page-contact .coop-prep li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--apricot-yellow);
}

.page-contact .coop-note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 备案信息 ---------- */
.page-contact .contact-record .section-head {
  align-items: baseline;
}

.page-contact .contact-record .section-title {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  color: var(--ink);
  margin: 0;
}

.page-contact .record-board {
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--pc-hair);
}

.page-contact .record-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .record-row dt {
  flex: 0 0 auto;
  min-width: 8em;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--sage);
}

.page-contact .record-row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .record-row dd.mono {
  letter-spacing: .04em;
  color: var(--moss);
}

/* ---------- 收尾 ---------- */
.page-contact .contact-closing {
  margin-top: clamp(38px, 6vw, 72px);
}

.page-contact .contact-closing__inner {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-contact .contact-closing__text h2 {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink);
  margin: 0 0 12px;
}

.page-contact .contact-closing__text p {
  margin: 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--moss);
}

.page-contact .contact-closing__actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .contact-closing__media {
  margin: 0;
}

.page-contact .contact-closing__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 5 / 2;
  object-fit: cover;
  border-radius: var(--pc-radius);
  border: 1px solid var(--line-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .hero-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 700px) {
  .page-contact .rhythm-item {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }
}

@media (min-width: 760px) {
  .page-contact .contact-block .section-note {
    writing-mode: vertical-rl;
    letter-spacing: .22em;
    align-self: flex-start;
    margin-left: auto;
    padding-top: 4px;
  }

  .page-contact .coop-panel {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 22px;
    align-items: start;
  }

  .page-contact .record-board {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 44px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(30px, 5vw, 60px);
  }

  .page-contact .contact-closing__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    gap: clamp(28px, 5vw, 56px);
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 344px) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 64px);
    align-items: start;
  }

  .page-contact .contact-file {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }

  .page-contact .coop-prep {
    margin-top: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero::before {
    animation: none;
  }

  .page-contact .check-item input[type="checkbox"]:checked::after {
    animation: none;
  }
}