.page-contact {
  --cc-pad: clamp(20px, 4vw, 44px);
  --cc-gap: clamp(18px, 3.2vw, 36px);
  --cc-line: rgba(93, 107, 103, 0.4);
  background:
    radial-gradient(880px 520px at 84% -8%, rgba(26, 54, 40, 0.85), transparent 72%),
    radial-gradient(620px 420px at 4% 42%, rgba(16, 37, 27, 0.9), transparent 70%),
    var(--ink);
  color: var(--paper);
  overflow-x: hidden;
  padding-bottom: clamp(44px, 7vw, 84px);
}

.page-contact .breadcrumb {
  padding-top: clamp(14px, 3vw, 26px);
  padding-bottom: clamp(14px, 3vw, 24px);
}

.page-contact .breadcrumb-link {
  color: var(--mute);
}

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

.page-contact .breadcrumb-current {
  color: var(--paper);
}

.page-contact a:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--gold-hi);
  outline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: var(--cc-gap);
  align-items: start;
}

.page-contact .contact-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 2px solid var(--line-gold);
  background: linear-gradient(158deg, var(--felt) 0%, var(--ink) 68%);
  box-shadow: var(--shadow-hard);
  padding: var(--cc-pad);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 96px;
  height: 8px;
  background: linear-gradient(90deg, var(--gold-hi), var(--gold-deep));
  z-index: 2;
}

.page-contact .contact-card__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  filter: grayscale(0.35) contrast(1.1);
  mix-blend-mode: screen;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-card__inner {
  position: relative;
  z-index: 1;
}

.page-contact .contact-card__eyebrow {
  color: var(--gold);
  letter-spacing: 0.16em;
  margin-bottom: clamp(14px, 2.4vw, 22px);
}

.page-contact .contact-card__title {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(34px, 8vw, 68px);
  line-height: 1.08;
  letter-spacing: 0.01em;
  margin: 0 0 clamp(14px, 2.4vw, 22px);
  color: var(--paper);
  overflow-wrap: break-word;
}

.page-contact .contact-card__lede {
  max-width: 46ch;
  color: var(--mute);
  font-size: 15px;
  line-height: 1.85;
  margin: 0 0 clamp(20px, 3.4vw, 32px);
}

.page-contact .contact-lines {
  margin: 0;
  border-top: 1px solid var(--cc-line);
}

.page-contact .contact-lines__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--cc-line);
}

.page-contact .contact-lines__key {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--stone);
  text-transform: uppercase;
}

.page-contact .contact-lines__val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(16px, 4vw, 25px);
  line-height: 1.3;
  color: var(--gold-hi);
  word-break: break-all;
}

.page-contact .contact-lines__mail {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--gold-deep);
}

.page-contact .contact-lines__mail:hover,
.page-contact .contact-lines__mail:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--gold-hi);
}

.page-contact .contact-lines__note {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--stone);
}

.page-contact .contact-index {
  border-left: 2px solid var(--gold-deep);
  padding-left: clamp(16px, 3vw, 26px);
}

.page-contact .contact-index__title {
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-contact .contact-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .contact-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(93, 107, 103, 0.22);
  color: var(--paper);
  font-size: 15px;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.page-contact .contact-index__link:hover,
.page-contact .contact-index__link:focus-visible {
  color: var(--gold-hi);
  transform: translateX(4px);
}

.page-contact .contact-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--stone);
}

.page-contact .contact-index__tail {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mute);
  word-break: break-all;
}

/* ---------- 章节通用 ---------- */
.page-contact .contact-section {
  padding-top: clamp(46px, 8vw, 96px);
}

.page-contact .channels-head,
.page-contact .template-head {
  max-width: 62ch;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .section-lead {
  margin: 16px 0 0;
  color: var(--mute);
  font-size: 15px;
  line-height: 1.85;
}

/* ---------- 三条渠道 ---------- */
.page-contact .channels {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .channel {
  position: relative;
  border: 2px solid var(--cc-line);
  background: linear-gradient(170deg, rgba(26, 54, 40, 0.92), rgba(8, 19, 14, 0.96));
  padding: var(--cc-pad);
  box-shadow: var(--shadow-hard-sm);
}

.page-contact .channel::after {
  content: "";
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 46px;
  height: 46px;
  background: linear-gradient(315deg, rgba(216, 168, 78, 0.5), transparent 62%);
  pointer-events: none;
}

.page-contact .channel__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
  margin: 0 0 14px;
}

.page-contact .channel__title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 3vw, 26px);
  line-height: 1.4;
  margin: 0 0 16px;
  color: var(--paper);
}

.page-contact .channel__value {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.6vw, 23px);
  line-height: 1.35;
  color: var(--gold-hi);
  word-break: break-all;
}

.page-contact .channel__value--addr {
  font-size: clamp(15px, 3.2vw, 19px);
  color: var(--paper);
}

.page-contact .channel__mail {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px dashed var(--gold-deep);
}

.page-contact .channel__mail:hover,
.page-contact .channel__mail:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--gold-hi);
}

.page-contact .channel__text {
  margin: 0 0 16px;
  color: var(--mute);
  font-size: 14.5px;
  line-height: 1.85;
}

.page-contact .channel__meta {
  margin: 0;
  padding-top: 14px;
  border-top: 1px dashed rgba(93, 107, 103, 0.4);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 来信模板 ---------- */
.page-contact .template-grid {
  display: grid;
  gap: clamp(14px, 2.4vw, 22px);
}

.page-contact .template-item {
  border-top: 3px solid var(--gold-deep);
  padding: 18px 0 20px;
}

.page-contact .template-item__num {
  font-family: var(--font-mono);
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--gold);
  margin: 0 0 12px;
}

.page-contact .template-item__title {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact .template-item__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
}

/* ---------- 回复节奏 ---------- */
.page-contact .rhythm {
  display: grid;
  gap: var(--cc-gap);
}

.page-contact .rhythm-figure {
  position: relative;
  border: 2px solid var(--line-gold);
  background: var(--lift);
  overflow: hidden;
  box-shadow: var(--shadow-hard-sm);
}

.page-contact .rhythm-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 12 / 7;
}

.page-contact .rhythm-figure__label {
  display: block;
  padding: 10px 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold-hi);
  background: rgba(8, 19, 14, 0.82);
  border-top: 1px solid var(--cc-line);
}

.page-contact .rhythm-body .section-title {
  margin-top: 10px;
}

.page-contact .rhythm-nodes {
  margin-top: clamp(20px, 3.4vw, 32px);
  display: grid;
  gap: 10px;
}

.page-contact .node {
  border: 2px solid var(--cc-line);
  background: rgba(16, 37, 27, 0.72);
}

.page-contact .node[open] {
  border-color: var(--line-gold);
  background: rgba(26, 54, 40, 0.9);
}

.page-contact .node__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  font-size: 15px;
  color: var(--paper);
  list-style: none;
}

.page-contact .node__head::-webkit-details-marker {
  display: none;
}

.page-contact .node__num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  border: 1px solid var(--gold-deep);
  padding: 1px 6px;
  flex: none;
}

.page-contact .node__body {
  padding: 0 16px 16px 46px;
}

.page-contact .node__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
}

/* ---------- 结尾 ---------- */
.page-contact .contact-tail {
  padding-top: clamp(40px, 7vw, 76px);
}

.page-contact .contact-tail__line {
  height: 1px;
  background: linear-gradient(90deg, var(--gold-deep), rgba(93, 107, 103, 0.18) 62%, transparent);
  margin-bottom: 22px;
}

.page-contact .contact-tail__lead {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mute);
  max-width: 52ch;
}

.page-contact .contact-tail__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.page-contact .contact-tail__link {
  color: var(--gold-hi);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--gold-deep);
  padding-bottom: 2px;
}

.page-contact .contact-tail__link:hover,
.page-contact .contact-tail__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-lines__row {
    grid-template-columns: 108px 1fr;
    align-items: baseline;
    gap: 16px;
  }

  .page-contact .template-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(22px, 4vw, 48px);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(28px, 5vw, 72px);
  }

  .page-contact .contact-index {
    margin-top: clamp(24px, 5vw, 64px);
  }

  .page-contact .channels {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    column-gap: clamp(20px, 2.6vw, 34px);
    row-gap: clamp(24px, 3vw, 40px);
  }

  .page-contact .channel--email {
    grid-column: 1 / span 7;
  }

  .page-contact .channel--call {
    grid-column: 8 / span 5;
    margin-top: clamp(28px, 5vw, 62px);
  }

  .page-contact .channel--addr {
    grid-column: 2 / span 6;
    margin-top: clamp(4px, 1.6vw, 16px);
  }

  .page-contact .rhythm {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: clamp(28px, 4.4vw, 64px);
    align-items: start;
  }

  .page-contact .rhythm-figure {
    margin-top: clamp(8px, 2vw, 22px);
  }
}

@media (min-width: 1200px) {
  .page-contact .contact-card {
    padding: clamp(38px, 3.4vw, 56px);
  }

  .page-contact .contact-card__title {
    font-size: clamp(44px, 4.2vw, 70px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-index__link {
    transition: none;
  }

  .page-contact .contact-index__link:hover,
  .page-contact .contact-index__link:focus-visible {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>