.page-contact {
  --pc-rule: rgba(11, 31, 25, .14);
  --pc-rule-soft: rgba(11, 31, 25, .07);
  --pc-radius: 10px;
  background: var(--paper);
  color: var(--graphite);
  font-family: var(--font-body);
}

.page-contact [id] {
  scroll-margin-top: 6rem;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-deep);
  color: var(--paper);
  padding: clamp(2rem, 6vw, 3.5rem) 0 clamp(2.5rem, 7vw, 4.5rem);
  border-bottom: 1px solid var(--line-on-dark);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(18, 54, 43, .95) 0%, rgba(11, 31, 25, .25) 48%, rgba(46, 94, 126, .34) 100%);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: -32%;
  right: -8%;
  width: min(52%, 620px);
  height: 172%;
  transform: rotate(16deg);
  background: linear-gradient(150deg, rgba(200, 164, 82, .18), rgba(243, 237, 225, 0) 62%);
  border-left: 1px solid var(--line-on-dark);
  pointer-events: none;
}

.page-contact .contact-hero > .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  font-size: .8125rem;
  margin-bottom: 1.25rem;
  color: rgba(243, 237, 225, .58);
}

.page-contact .breadcrumbs a {
  color: rgba(243, 237, 225, .8);
  text-decoration: none;
}

.page-contact .breadcrumbs a:hover,
.page-contact .breadcrumbs a:focus-visible {
  color: var(--gold);
}

.page-contact .crumb-sep {
  margin: 0 .4rem;
  opacity: .6;
}

.page-contact .eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--blue);
  margin: 0;
}

.page-contact .contact-hero .eyebrow {
  color: var(--gold);
}

.page-contact .contact-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 5.4vw, 3.8rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  margin: .6rem 0 1rem;
  max-width: 22ch;
  color: var(--paper);
}

.page-contact .contact-hero .lede {
  max-width: 62ch;
  margin: 0 0 1.75rem;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: 1.85;
  color: rgba(243, 237, 225, .8);
}

.page-contact .hero-jump {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .625rem;
  margin: 0;
  padding: 0;
}

.page-contact .hero-jump a {
  display: inline-flex;
  align-items: center;
  padding: .5rem .9rem;
  font-size: .875rem;
  color: var(--paper);
  text-decoration: none;
  border: 1px solid var(--line-on-dark);
  border-radius: 999px;
  background: rgba(243, 237, 225, .06);
  transition: background .28s var(--ease), border-color .28s var(--ease), color .28s var(--ease);
}

.page-contact .hero-jump a:hover,
.page-contact .hero-jump a:focus-visible {
  background: rgba(200, 164, 82, .18);
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 主体两栏 ---------- */
.page-contact .contact-body {
  padding: clamp(2.5rem, 7vw, 4.5rem) 0;
}

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 4vw, 2.75rem);
  align-items: start;
}

.page-contact .contact-col-main {
  display: grid;
  gap: clamp(1.75rem, 4vw, 2.5rem);
  min-width: 0;
}

.page-contact .contact-col-side {
  display: grid;
  gap: 0;
  min-width: 0;
}

@media (min-width: 960px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  }

  .page-contact .contact-col-side {
    position: sticky;
    top: 5.5rem;
    align-self: start;
  }
}

.page-contact .block-head {
  margin-bottom: 1.25rem;
}

.page-contact .block-head .section-title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink-deep);
  margin: .4rem 0 .55rem;
}

.page-contact .block-head .section-note {
  margin: 0;
  max-width: 58ch;
  font-size: .9375rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 提交路径 ---------- */
.page-contact .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--pc-rule);
}

.page-contact .step {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: .4rem .9rem;
  padding: 1.3rem .5rem;
  border-bottom: 1px solid var(--pc-rule);
  transition: background .28s var(--ease);
}

.page-contact .step:hover {
  background: rgba(46, 94, 126, .05);
}

.page-contact .step-idx {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--blue);
  padding-top: .28rem;
}

.page-contact .step h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink-deep);
  margin: 0 0 .35rem;
}

.page-contact .step p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图框 ---------- */
.page-contact .fig-frame {
  margin: 0;
  border: 1px solid var(--pc-rule);
  border-radius: var(--pc-radius);
  overflow: hidden;
  background: var(--paper-warm);
}

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

.page-contact .fig-frame figcaption {
  padding: .75rem 1rem;
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--muted);
  background: var(--white);
  border-top: 1px solid var(--pc-rule);
}

/* ---------- 沟通准备清单 ---------- */
.page-contact .prep-block {
  background: var(--white);
  border: 1px solid var(--pc-rule);
  border-radius: var(--pc-radius);
  padding: clamp(1.25rem, 3vw, 2rem);
}

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

.page-contact .check-item {
  position: relative;
  border-bottom: 1px dashed var(--pc-rule-soft);
}

.page-contact .check-item:last-child {
  border-bottom: 0;
}

.page-contact .check-item input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page-contact .check-item label {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .85rem .4rem;
  cursor: pointer;
  border-radius: 6px;
  transition: background .24s var(--ease);
}

.page-contact .check-item label:hover {
  background: rgba(46, 94, 126, .06);
}

.page-contact .check-box {
  flex: none;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: .25rem;
  position: relative;
  border: 1.5px solid var(--blue-soft);
  border-radius: 3px;
  background: var(--paper);
  transition: background .24s var(--ease), border-color .24s var(--ease);
}

.page-contact .check-box::after {
  content: "";
  position: absolute;
  left: .28rem;
  top: .04rem;
  width: .3rem;
  height: .58rem;
  border-right: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(45deg) scale(0);
  transform-origin: center;
  transition: transform .22s var(--ease);
}

.page-contact .check-item input:checked + label .check-box {
  background: var(--blue);
  border-color: var(--blue);
}

.page-contact .check-item input:checked + label .check-box::after {
  transform: rotate(45deg) scale(1);
}

.page-contact .check-item input:focus-visible + label .check-box {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-contact .check-text {
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .check-text strong {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink-deep);
  margin-right: .35rem;
}

.page-contact .check-item input:checked + label .check-text {
  color: var(--muted);
}

/* ---------- 联系卡 ---------- */
.page-contact .contact-side {
  position: relative;
  overflow: hidden;
  border-radius: var(--pc-radius);
  padding: clamp(1.35rem, 3.5vw, 2rem);
  background: linear-gradient(155deg, var(--ink-table) 0%, var(--ink-deep) 100%);
  color: var(--paper);
  box-shadow: 0 20px 44px -30px rgba(11, 31, 25, .85);
}

.page-contact .contact-side::after {
  content: "";
  position: absolute;
  right: -25%;
  bottom: -35%;
  width: 82%;
  height: 82%;
  background: radial-gradient(circle at 60% 40%, rgba(200, 164, 82, .24), rgba(200, 164, 82, 0) 68%);
  pointer-events: none;
}

.page-contact .contact-side > * {
  position: relative;
  z-index: 1;
}

.page-contact .contact-side .eyebrow {
  color: var(--gold);
}

.page-contact .side-title {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  font-weight: 700;
  color: var(--paper);
  margin: .45rem 0 .6rem;
}

.page-contact .side-note {
  margin: 0 0 1.5rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: rgba(243, 237, 225, .74);
}

.page-contact .contact-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-contact .contact-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "key copy"
    "val copy";
  gap: .2rem .75rem;
  align-items: center;
  padding: .9rem 1rem;
  border: 1px solid var(--line-on-dark);
  border-radius: 8px;
  background: rgba(243, 237, 225, .07);
  backdrop-filter: blur(8px);
}

.page-contact .contact-key {
  grid-area: key;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .14em;
  color: rgba(243, 237, 225, .6);
}

.page-contact .contact-val {
  grid-area: val;
  font-family: var(--font-mono);
  font-size: clamp(.8125rem, 2.4vw, .9375rem);
  color: var(--paper);
  word-break: break-all;
}

.page-contact .copy-btn {
  grid-area: copy;
  align-self: center;
  padding: .45rem .8rem;
  font-family: var(--font-body);
  font-size: .8125rem;
  color: var(--paper);
  background: transparent;
  border: 1px solid var(--line-on-dark);
  border-radius: 999px;
  cursor: pointer;
  transition: background .26s var(--ease), border-color .26s var(--ease), color .26s var(--ease);
}

.page-contact .copy-btn:hover,
.page-contact .copy-btn:focus-visible {
  background: rgba(200, 164, 82, .2);
  border-color: var(--gold);
}

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

.page-contact .copy-btn.is-copied {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ink-deep);
}

.page-contact .side-foot {
  margin: 0;
  padding-top: .9rem;
  border-top: 1px solid var(--line-on-dark);
  font-size: .8125rem;
  line-height: 1.75;
  color: rgba(243, 237, 225, .62);
}

/* ---------- 地址层 ---------- */
.page-contact .addr-card {
  position: relative;
  margin-top: 1rem;
  padding: clamp(1.25rem, 3vw, 1.75rem) clamp(1.25rem, 3vw, 1.75rem) clamp(1rem, 2.5vw, 1.5rem) calc(clamp(1.25rem, 3vw, 1.75rem) + 4px);
  background: var(--white);
  border: 1px solid var(--pc-rule);
  border-radius: var(--pc-radius);
  overflow: hidden;
}

.page-contact .addr-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--blue), var(--cinnabar));
}

.page-contact .addr-text {
  margin: .55rem 0 .8rem;
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.125rem);
  font-weight: 700;
  line-height: 1.72;
  color: var(--ink-deep);
}

.page-contact .addr-note {
  margin: 0 0 1rem;
  font-size: .875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .addr-icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .06em;
  color: var(--blue);
}

/* ---------- 邮件受理范围 ---------- */
.page-contact .mail-scope {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  background: var(--paper-warm);
  border-top: 1px solid var(--pc-rule);
  border-bottom: 1px solid var(--pc-rule);
}

.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  align-items: center;
  margin-top: 1.75rem;
}

@media (min-width: 860px) {
  .page-contact .scope-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  }
}

.page-contact .scope-list {
  list-style: none;
  margin: 0 0 1.25rem;
  padding: 0;
  display: grid;
  gap: .75rem;
}

.page-contact .scope-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .9rem;
  align-items: start;
  padding: 1rem 1.1rem;
  background: var(--white);
  border: 1px solid var(--pc-rule-soft);
  border-radius: 8px;
}

.page-contact .scope-tag {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--white);
  background: var(--blue);
  border-radius: 4px;
  padding: .22rem .5rem;
  white-space: nowrap;
}

.page-contact .scope-tag--red {
  background: var(--cinnabar);
}

.page-contact .scope-item p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .mail-note {
  margin: 0;
  padding: .9rem 1.1rem;
  border-left: 3px solid var(--cinnabar);
  border-radius: 0 6px 6px 0;
  background: rgba(179, 58, 43, .07);
  font-size: .9rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-contact .scope-fig {
  background: var(--paper);
}

/* ---------- 延伸入口 ---------- */
.page-contact .more-paths {
  padding: clamp(2.5rem, 6vw, 4rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-contact .path-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: .85rem;
}

@media (min-width: 780px) {
  .page-contact .path-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-contact .path-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .9rem;
  align-items: baseline;
  padding: 1.1rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--pc-rule-soft);
  border-radius: 8px;
  text-decoration: none;
  transition: border-color .28s var(--ease), transform .28s var(--ease), box-shadow .28s var(--ease);
}

.page-contact .path-list a:hover,
.page-contact .path-list a:focus-visible {
  border-color: var(--blue-soft);
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -24px rgba(11, 31, 25, .6);
}

.page-contact .path-list a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-contact .path-label {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink-deep);
  white-space: nowrap;
}

.page-contact .path-desc {
  font-size: .875rem;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 520px) {
  .page-contact .step {
    grid-template-columns: 1.9rem minmax(0, 1fr);
    padding: 1.1rem .25rem;
  }

  .page-contact .contact-item {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "key"
      "val"
      "copy";
    gap: .45rem;
    justify-items: start;
  }

  .page-contact .copy-btn {
    align-self: start;
  }

  .page-contact .scope-item {
    grid-template-columns: minmax(0, 1fr);
    gap: .55rem;
  }

  .page-contact .scope-tag {
    justify-self: start;
  }

  .page-contact .path-list a {
    grid-template-columns: minmax(0, 1fr);
    gap: .35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }

  .page-contact .path-list a:hover,
  .page-contact .path-list a:focus-visible {
    transform: none;
  }
}