/* ===== 联系入口页 · page-contact ===== */
.page-contact {
  --c-pad: 20px;
  display: block;
}

.page-contact .eyebrow {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-contact .section-head__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 5.4vw, 34px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .section-head__note {
  margin: 0;
  max-width: 74ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 首屏：上重下轻的对角色块 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  padding: 24px 0 44px;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(148deg, var(--ink-800) 0%, var(--ink-700) 46%, #081711 100%);
  clip-path: polygon(0 0, 100% 0, 100% 56%, 0 94%);
  z-index: 0;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  top: 72%;
  height: 1px;
  background: linear-gradient(90deg, rgba(242, 193, 78, 0) 0%, rgba(242, 193, 78, .8) 22%, rgba(242, 193, 78, .18) 100%);
  transform: rotate(-7deg);
  transform-origin: center;
  z-index: 1;
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 2;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--faint);
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

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

.page-contact .breadcrumbs [aria-current="page"] {
  color: var(--gold);
}

.page-contact .contact-hero h1 {
  margin: 0 0 18px;
  max-width: 720px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(30px, 8.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-contact .contact-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-figure {
  margin: 30px 0 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--edge);
  overflow: hidden;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  opacity: .7;
}

/* ---------- 渠道卡片 ---------- */
.page-contact .contact-channels {
  background: var(--ink-900);
  padding: 50px 0 16px;
}

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  background: var(--ink-700);
  box-shadow: var(--edge);
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--gold);
  opacity: 0;
  transition: opacity .16s var(--ease);
}

@media (hover: hover) {
  .page-contact .channel-card:hover {
    border-color: var(--gold);
    background: #14362D;
  }

  .page-contact .channel-card:hover::before {
    opacity: 1;
  }
}

.page-contact .channel-card__index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--faint);
}

.page-contact .channel-card__label {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--text);
}

.page-contact .channel-card__value {
  display: block;
  max-width: 100%;
  margin: 8px 0 14px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(13px, 3.6vw, 18px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--gold);
  overflow-wrap: anywhere;
  word-break: break-word;
  user-select: all;
}

.page-contact .channel-card--phone .channel-card__value {
  font-size: clamp(22px, 8vw, 32px);
  color: var(--gold-soft);
  text-shadow: 0 0 12px rgba(242, 193, 78, .25);
}

.page-contact .channel-card__value--addr {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  line-height: 1.75;
  letter-spacing: 0;
  color: var(--text);
}

.page-contact .channel-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .channel-card__hint {
  margin: auto 0 0;
  padding-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--faint);
}

/* ---------- 写信前准备 ---------- */
.page-contact .contact-prep {
  padding: 52px 0;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .prep-aside h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 5.6vw, 34px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .prep-aside__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-contact .prep-item {
  position: relative;
  padding: 18px 0 18px 50px;
  border-top: 1px solid var(--line);
}

.page-contact .prep-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .prep-item__num {
  position: absolute;
  left: 0;
  top: 21px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--gold);
}

.page-contact .prep-item__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 邮件模板 ---------- */
.page-contact .contact-templates {
  padding: 52px 0;
  background: var(--ink-900);
}

.page-contact .contact-templates__figure {
  margin-top: 28px;
}

.page-contact .template-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 28px;
}

.page-contact .template-card {
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--edge);
}

.page-contact .template-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.page-contact .template-card__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .template-block {
  min-width: 0;
  padding: 16px 18px;
  background: var(--num-bg);
  overflow-x: auto;
}

.page-contact .template-block:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: -1px;
}

.page-contact .template-block pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.95;
  color: var(--text);
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.page-contact .template-block b {
  color: var(--cyan);
  font-weight: 700;
}

.page-contact .template-card__foot {
  margin: 0;
  padding: 12px 18px 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faint);
}

/* ---------- 处理流程 ---------- */
.page-contact .contact-flow {
  padding: 52px 0;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
}

.page-contact .flow-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .flow-step {
  min-width: 0;
  padding: 20px 18px;
  border: 1px solid var(--line);
  background: var(--ink-700);
  transition: border-color .16s var(--ease);
}

@media (hover: hover) {
  .page-contact .flow-step:hover {
    border-color: var(--gold);
  }
}

.page-contact .flow-step__num {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--gold);
  opacity: .85;
}

.page-contact .flow-step h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 自助引导 ---------- */
.page-contact .contact-selfhelp {
  padding: 52px 0 62px;
  background: var(--ink-900);
}

.page-contact .selfhelp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .selfhelp-aside h2 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(23px, 5.6vw, 34px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .selfhelp-aside__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

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

.page-contact .selfhelp-item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .selfhelp-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 2px 6px;
  font-family: var(--font-head);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  text-decoration: none;
  transition: color .16s var(--ease);
}

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

.page-contact .selfhelp-link__arrow {
  flex: none;
  font-family: var(--font-mono);
  color: var(--gold);
  transition: transform .16s var(--ease);
}

.page-contact .selfhelp-link:hover .selfhelp-link__arrow {
  transform: translateX(4px);
}

.page-contact .selfhelp-note {
  margin: 0;
  padding: 0 2px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact {
    --c-pad: 28px;
  }

  .page-contact .contact-hero {
    padding: 32px 0 56px;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-grid > .channel-card:last-child {
    grid-column: 1 / -1;
  }

  .page-contact .contact-figure img {
    aspect-ratio: 2 / 1;
  }
}

@media (min-width: 900px) {
  .page-contact .prep-grid {
    grid-template-columns: 4fr 8fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .selfhelp-grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
    align-items: start;
  }

  .page-contact .flow-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .template-stack {
    max-width: 940px;
  }
}

@media (min-width: 1000px) {
  .page-contact .channel-grid {
    grid-template-columns: 1.12fr 1fr .88fr;
    gap: 20px;
    align-items: stretch;
  }

  .page-contact .channel-grid > .channel-card:last-child {
    grid-column: auto;
  }

  .page-contact .contact-hero h1 {
    max-width: 12ch;
  }

  .page-contact .contact-figure img {
    aspect-ratio: 8 / 3;
  }

  .page-contact .contact-channels,
  .page-contact .contact-templates,
  .page-contact .contact-selfhelp {
    padding-top: 62px;
  }

  .page-contact .contact-prep,
  .page-contact .contact-flow {
    padding: 62px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition: none !important;
    transform: none !important;
  }
}