.page-contact {
  background:
    radial-gradient(1100px 520px at 88% -8%, rgba(42, 63, 122, .5), transparent 62%),
    radial-gradient(760px 420px at -12% 14%, rgba(14, 156, 144, .16), transparent 60%),
    var(--ink-900);
  color: var(--white);
  overflow-x: hidden;
}

.page-contact .container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 900px) {
  .page-contact .container { padding: 0 32px; }
}

.page-contact .section { padding: 52px 0; }

@media (min-width: 900px) {
  .page-contact .section { padding: 80px 0; }
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero { padding-top: 26px; padding-bottom: 44px; }

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  font-size: 13px;
  color: var(--mist);
}

.page-contact .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) ease, border-color var(--dur) ease;
}

.page-contact .breadcrumb-link:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}

.page-contact .bc-sep { color: var(--ink-700); }
.page-contact .bc-current { color: var(--white); }

.page-contact .hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: end;
}

@media (min-width: 880px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
    gap: 44px;
  }
}

.page-contact .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--lava-soft);
}

.page-contact .eyebrow--dark { color: var(--cyan-deep); }

.page-contact .lead {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: rgba(246, 248, 255, .8);
}

.page-contact .hero-copy .lead { max-width: 56ch; }

.page-contact .hero-figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  max-height: 300px;
  border-radius: var(--radius-l);
  border: 1px solid var(--line-cyan);
  background: var(--ink-800);
}

@media (min-width: 880px) {
  .page-contact .hero-figure { max-height: 340px; }
}

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

/* ---------- 通道矩阵 ---------- */

.page-contact .channel-matrix {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 38px;
}

.page-contact .chan-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--ink-800);
  padding: 24px 22px;
}

.page-contact .chan-card--mail {
  border-color: rgba(255, 106, 31, .42);
  background:
    linear-gradient(155deg, rgba(255, 106, 31, .16), rgba(255, 106, 31, 0) 58%),
    var(--ink-800);
}

.page-contact .chan-card--tel {
  border-color: var(--line-cyan);
  background:
    linear-gradient(155deg, rgba(37, 230, 208, .14), rgba(37, 230, 208, 0) 58%),
    var(--ink-800);
}

.page-contact .chan-label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-contact .chan-card--mail .chan-label { color: var(--lava-soft); }
.page-contact .chan-card--tel .chan-label { color: var(--cyan); }

.page-contact .chan-value {
  margin: 0 0 14px;
  font-family: var(--font-num);
  font-size: clamp(17px, 4.6vw, 22px);
  line-height: 1.35;
  word-break: break-all;
  color: var(--white);
}

.page-contact .chan-value--addr {
  font-family: var(--font-sans);
  font-size: 18px;
  letter-spacing: .02em;
  word-break: normal;
}

.page-contact .chan-use {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 248, 255, .76);
}

.page-contact .chan-meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-contact .chan-card--mail .chan-meta { color: var(--lava-soft); }
.page-contact .chan-card--post .chan-meta { color: var(--mist); }

@media (min-width: 820px) {
  .page-contact .channel-matrix {
    grid-template-columns: minmax(0, 1.28fr) minmax(0, 1fr) minmax(0, .94fr);
    align-items: start;
    gap: 20px;
  }

  .page-contact .chan-card--mail { padding: 36px 32px 30px; }
  .page-contact .chan-card--tel { padding: 26px 24px 24px; margin-top: 30px; }
  .page-contact .chan-card--post { padding: 24px 22px; margin-top: 58px; }
}

/* ---------- 邮件通道 ---------- */

.page-contact .section-head {
  position: relative;
  max-width: 640px;
  margin: 0 0 34px;
}

.page-contact .section-head .annot {
  display: none;
  position: absolute;
  top: 2px;
  right: 0;
  margin: 0;
  writing-mode: vertical-rl;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-contact .section-head .annot { display: block; right: 8px; }
}

.page-contact .mail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

@media (min-width: 900px) {
  .page-contact .mail-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    gap: 32px;
    align-items: start;
  }
}

.page-contact .prose {
  color: rgba(246, 248, 255, .78);
  font-size: 16px;
  line-height: 1.8;
}

.page-contact .mail-text p { margin: 0 0 16px; max-width: 62ch; }

.page-contact .subject-line {
  margin-top: 26px !important;
  font-size: 14px;
  color: var(--mist);
}

.page-contact .subject-sample {
  display: block;
  margin: 0 0 10px;
  padding: 14px 16px;
  border-left: 3px solid var(--lava);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(255, 106, 31, .1);
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--lava-soft);
  word-break: break-all;
}

.page-contact .subject-hint {
  font-size: 14px;
  color: var(--mist);
}

.page-contact .mail-prep {
  padding: 24px 22px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-l);
  background:
    linear-gradient(165deg, rgba(37, 230, 208, .1), rgba(37, 230, 208, 0) 62%),
    var(--ink-800);
}

.page-contact .prep-title {
  margin: 0 0 18px;
  font-size: 16px;
  letter-spacing: .04em;
  color: var(--white);
}

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

.page-contact .mail-checklist li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(246, 248, 255, .78);
}

.page-contact .mail-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan);
}

/* ---------- 电话通道 ---------- */

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

@media (min-width: 900px) {
  .page-contact .phone-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: 48px;
    align-items: center;
  }
}

.page-contact .phone-note {
  margin: 18px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--lava);
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .phone-card {
  padding: 30px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    linear-gradient(140deg, rgba(255, 106, 31, .2), rgba(37, 230, 208, .1) 72%),
    var(--ink-800);
}

.page-contact .phone-label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-contact .phone-num {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: clamp(30px, 8vw, 50px);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--white);
}

.page-contact .phone-when {
  margin: 0 0 20px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

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

.page-contact .phone-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(246, 248, 255, .78);
}

.page-contact .phone-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--lava-soft);
}

.page-contact .phone-fallback {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 合作与投稿 ---------- */

.page-contact .section--paper {
  background: var(--paper);
  color: var(--ink-900);
}

.page-contact .section--paper .lead--dark {
  color: rgba(19, 34, 74, .78);
}

.page-contact .coop-list {
  display: grid;
  gap: 14px;
}

.page-contact .coop-item {
  border: 1px solid var(--line-light);
  border-radius: var(--radius-m);
  background: var(--white);
  overflow: hidden;
}

.page-contact .coop-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

.page-contact .coop-item summary::-webkit-details-marker { display: none; }

.page-contact .coop-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan-deep);
}

.page-contact .coop-item[open] summary::after { content: "–"; }

.page-contact .coop-item[open] summary { border-bottom: 1px solid var(--line-light); }

.page-contact .coop-head {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-900);
}

.page-contact .coop-body {
  padding: 18px 20px 20px;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(19, 34, 74, .8);
}

.page-contact .coop-body p { margin: 0 0 14px; max-width: 68ch; }

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

.page-contact .coop-need li {
  position: relative;
  padding-left: 16px;
}

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

.page-contact .coop-eta {
  margin: 0;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan-deep);
}

@media (min-width: 900px) {
  .page-contact .coop-list {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: auto auto;
  }

  .page-contact .coop-item:first-child {
    grid-row: span 2;
  }

  .page-contact .coop-item:first-child .coop-body { padding-bottom: 26px; }
}

/* ---------- 站点信息与地址带 ---------- */

.page-contact .record-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: var(--ink-800);
}

.page-contact .record-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .3;
}

.page-contact .record-inner {
  position: relative;
  z-index: 1;
  padding: 30px 22px 28px;
}

@media (min-width: 900px) {
  .page-contact .record-inner { padding: 44px 40px 40px; }
}

.page-contact .record-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px 30px;
  margin: 26px 0 0;
}

@media (min-width: 760px) {
  .page-contact .record-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 40px;
  }
}

.page-contact .record-cell {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .record-grid dt {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-contact .record-grid dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-all;
}

.page-contact .record-note {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(246, 248, 255, .7);
}

.page-contact .record-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
<<<END>>>