.page-contact {
  --pc-pad-y: clamp(48px, 7vw, 96px);
  --pc-gap: clamp(28px, 4vw, 60px);
  background: var(--ink-900);
  color: var(--hair);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(44px, 8vw, 104px)) 0 clamp(48px, 7vw, 96px);
  background: var(--ink-900);
}

.page-contact .contact-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  opacity: .3;
}

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

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(10, 26, 47, .72) 0%, rgba(10, 26, 47, .94) 68%, var(--ink-900) 100%),
    repeating-linear-gradient(90deg, var(--hair-08) 0 1px, transparent 1px 92px);
  pointer-events: none;
}

.page-contact .contact-hero-shell {
  position: relative;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .eyebrow {
  margin: 0 0 12px;
  color: var(--cyan);
}

.page-contact .contact-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 88px);
  line-height: .96;
  letter-spacing: -.03em;
  color: var(--paper);
}

.page-contact .contact-hero .lede {
  max-width: 62ch;
  margin: clamp(18px, 2.6vw, 30px) 0 0;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.78;
  color: var(--hair);
}

.page-contact .hero-channels {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}

.page-contact .chan-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--hair-24);
  background: rgba(18, 41, 63, .6);
  color: var(--paper);
  font-size: 14px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease), color .2s var(--ease);
}

.page-contact .chan-chip:hover,
.page-contact .chan-chip:focus-visible {
  border-color: var(--cyan);
  background: var(--cyan-a16);
  color: var(--paper);
}

.page-contact .chan-dot {
  width: 7px;
  height: 7px;
  background: var(--cyan);
  display: inline-block;
  transform: rotate(45deg);
}

/* ---------- 主体双栏 ---------- */
.page-contact .contact-body {
  background: var(--ink-900);
  padding: var(--pc-pad-y) 0;
}

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  align-items: start;
}

.page-contact .section-head {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-contact .section-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-contact .section-head .note {
  max-width: 60ch;
  margin: 14px 0 0;
  color: var(--grey);
  font-size: 14px;
  line-height: 1.8;
}

.page-contact .route-block {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 2.4vw, 30px);
  padding: clamp(22px, 3vw, 34px) 0;
  border-top: 1px solid var(--hair-12);
}

.page-contact .route-block:last-child {
  border-bottom: 1px solid var(--hair-12);
}

.page-contact .route-index {
  margin: 0;
  font-family: var(--font-data);
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--hair-24);
}

.page-contact .route-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 1.8vw, 23px);
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .route-body p {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--hair);
  max-width: 70ch;
}

.page-contact .route-body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-a42);
}

.page-contact .route-body a:hover,
.page-contact .route-body a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-contact .route-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .route-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--hair);
}

.page-contact .route-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .route-list li:last-child {
  padding-bottom: 0;
}

.page-contact .route-foot {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--hair-12);
  font-size: 14px;
  line-height: 1.78;
  color: var(--grey);
  max-width: 70ch;
}

/* ---------- 联系信息卡 ---------- */
.page-contact .contact-aside {
  margin-top: 4px;
}

.page-contact .contact-card {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  background: var(--ink-800);
  border: 1px solid var(--hair-12);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 46%;
  height: 3px;
  background: var(--cyan);
}

.page-contact .card-tab {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  border: 1px solid var(--hair-24);
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--grey);
}

.page-contact .card-title {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .archive {
  margin: 0;
  padding: 0;
}

.page-contact .archive-row {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-top: 1px solid var(--hair-12);
}

.page-contact .archive-row:last-child {
  border-bottom: 1px solid var(--hair-12);
}

.page-contact .archive-key {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--grey);
}

.page-contact .archive-val {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .archive-val-data {
  font-family: var(--font-data);
  font-size: clamp(16px, 1.6vw, 19px);
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-contact .card-note {
  margin: clamp(18px, 2.4vw, 24px) 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--hair-12);
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--grey);
}

/* ---------- 勘误清单 ---------- */
.page-contact .contact-checklist {
  position: relative;
  background: var(--ink-800);
  padding: var(--pc-pad-y) 0;
}

.page-contact .slash-band {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan) 22%, var(--violet) 22%, var(--violet) 44%, var(--orange) 44%, var(--orange) 58%, var(--hair-12) 58%, var(--hair-12) 100%);
  transform: skewY(-6deg);
  transform-origin: left top;
  opacity: .55;
}

.page-contact .checklist-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--pc-gap);
  align-items: start;
  padding-top: clamp(14px, 2vw, 24px);
}

.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .step-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(14px, 2.4vw, 28px);
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-top: 1px solid var(--hair-12);
  align-items: start;
}

.page-contact .step-list li:last-child {
  border-bottom: 1px solid var(--hair-12);
}

.page-contact .step-num {
  font-family: var(--font-data);
  font-size: clamp(22px, 3vw, 34px);
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--violet);
}

.page-contact .step-body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-contact .step-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--hair);
  max-width: 68ch;
}

.page-contact .checklist-figure {
  margin: 0;
}

.page-contact .checklist-figure .media {
  border: 1px solid var(--hair-12);
}

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

.page-contact .checklist-figure .media-caption {
  margin-top: 14px;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--grey);
  border-left: 2px solid var(--violet-a42);
  padding-left: 12px;
}

/* ---------- 受理边界 ---------- */
.page-contact .contact-scope {
  background: var(--ink-900);
  padding: var(--pc-pad-y) 0;
}

.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-contact .scope-col {
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--hair-12);
}

.page-contact .scope-accept {
  border-top-color: var(--cyan-a42);
}

.page-contact .scope-decline {
  border-top-color: var(--orange-a42);
}

.page-contact .scope-label {
  margin: 0 0 16px;
}

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

.page-contact .scope-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--hair);
  max-width: 60ch;
}

.page-contact .scope-accept .scope-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .62em;
  width: 7px;
  height: 7px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

.page-contact .scope-decline .scope-list li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: .82em;
  width: 9px;
  height: 1px;
  background: var(--orange);
}

.page-contact .scope-decline .scope-list li {
  color: var(--grey);
}

.page-contact .scope-list a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-a42);
}

.page-contact .scope-list a:hover,
.page-contact .scope-list a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 备案与署名 ---------- */
.page-contact .contact-imprint {
  background: var(--paper);
  color: var(--paper-ink);
  padding: clamp(44px, 6vw, 84px) 0 clamp(52px, 7vw, 96px);
}

.page-contact .imprint-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-contact .contact-imprint .eyebrow {
  color: var(--orange-deep);
}

.page-contact .imprint-main h2 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper-ink);
}

.page-contact .imprint-main p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper-ink);
  max-width: 72ch;
}

.page-contact .imprint-main .note {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(27, 31, 36, .68);
}

.page-contact .imprint-side {
  padding: clamp(20px, 3vw, 28px);
  border: 1px solid var(--paper-line-strong);
  background: rgba(201, 214, 226, .22);
}

.page-contact .imprint-key {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: .14em;
  color: rgba(27, 31, 36, .6);
}

.page-contact .imprint-key + .imprint-val {
  margin-top: 0;
}

.page-contact .imprint-val {
  margin: 0 0 18px;
  font-family: var(--font-data);
  font-size: clamp(16px, 1.7vw, 20px);
  letter-spacing: -.01em;
  color: var(--paper-ink);
  word-break: break-word;
}

.page-contact .imprint-val:last-child {
  margin-bottom: 0;
}

.page-contact .imprint-link {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--paper-line);
}

.page-contact .imprint-link a {
  color: var(--orange-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--orange-a42);
  font-size: 15px;
}

.page-contact .imprint-link a:hover,
.page-contact .imprint-link a:focus-visible {
  border-bottom-color: var(--orange-deep);
}

/* ---------- 焦点可视 ---------- */
.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .contact-imprint a:focus-visible {
  outline-color: var(--orange-deep);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-contact .scope-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0 clamp(24px, 3vw, 48px);
  }

  .page-contact .scope-col {
    padding-top: clamp(24px, 3vw, 34px);
  }

  .page-contact .scope-decline {
    border-top-color: var(--hair-12);
    border-left: 1px solid var(--hair-12);
    padding-left: clamp(24px, 3vw, 44px);
    margin-left: calc(-1 * clamp(24px, 3vw, 48px) / 2);
  }

  .page-contact .imprint-grid {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(36px, 5vw, 76px);
  }

  .page-contact .contact-aside {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-contact .checklist-grid {
    grid-template-columns: 7fr 5fr;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-contact .checklist-figure {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .chan-chip,
  .page-contact .route-body a,
  .page-contact .scope-list a,
  .page-contact .imprint-link a {
    transition: none;
  }
}
</main>