.page-contact {
  --c-line: rgba(20, 24, 28, 0.14);
  --c-line-deep: rgba(248, 244, 236, 0.24);
  --c-ink-soft: rgba(20, 24, 28, 0.68);
  --c-paper-soft: rgba(248, 244, 236, 0.8);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .hero {
  position: relative;
  padding-block: clamp(1.3rem, 3vw, 2rem) clamp(2.2rem, 5vw, 3.6rem);
  background: linear-gradient(180deg, #e6eef2 0%, var(--paper) 74%);
}

.page-contact .hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: 42%;
  width: 240px;
  height: 300px;
  background: var(--clay);
  opacity: 0.08;
  transform: rotate(7deg);
  pointer-events: none;
}

.page-contact .hero-grid {
  position: relative;
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

.page-contact .hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 4.3rem);
  line-height: 0.98;
  letter-spacing: -0.01em;
  margin: 0.45rem 0 0;
  text-wrap: balance;
}

.page-contact .hero-title em {
  font-style: normal;
  color: var(--clay);
}

.page-contact .hero-lead {
  margin: 1.1rem 0 0;
  max-width: 33em;
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.78;
  color: var(--c-ink-soft);
}

.page-contact .hero-line {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  margin: 1.3rem 0 0;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--stub);
  font-family: var(--font-data);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.page-contact .hero-line a {
  color: var(--clay);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.page-contact .hero-line a:hover {
  color: var(--mist-deep);
}

.page-contact .hero-shot-wrap {
  position: relative;
}

.page-contact .hero-shot-wrap::before {
  content: "";
  position: absolute;
  inset: 12px -10px -12px 12px;
  background: var(--clay);
  border-radius: var(--radius);
  transform: rotate(-2deg);
}

.page-contact .hero-shot {
  position: relative;
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius);
  background: var(--mist-deep);
  box-shadow: var(--shadow-ticket);
}

.page-contact .hero-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.04);
}

.page-contact .hero-shot::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(192, 68, 28, 0.26), rgba(15, 51, 80, 0) 58%);
  pointer-events: none;
}

/* ---------- 通用章节头 ---------- */
.page-contact .channels-block,
.page-contact .compose-block,
.page-contact .coop-block,
.page-contact .registry-block,
.page-contact .back-block {
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
}

.page-contact .sec-head {
  margin-bottom: clamp(1.4rem, 3vw, 2.2rem);
}

.page-contact .sec-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.55rem, 3.4vw, 2.15rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 0.35rem 0 0;
}

.page-contact .sec-sub {
  margin: 0.75rem 0 0;
  max-width: 46em;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--c-ink-soft);
}

.page-contact .inline-link {
  color: var(--clay);
  text-decoration: none;
  border-bottom: 1px solid rgba(192, 68, 28, 0.45);
}

.page-contact .inline-link:hover {
  color: var(--mist-deep);
  border-bottom-color: var(--mist-deep);
}

/* ---------- 通道卡 ---------- */
.page-contact .channels-block {
  background: var(--mist-pale);
}

.page-contact .channel-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.6rem 1.25rem 1.2rem;
  background: var(--paper);
  border: 1px solid rgba(20, 24, 28, 0.12);
  border-radius: var(--radius);
  box-shadow: var(--shadow-ticket);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--clay);
  border-radius: var(--radius) var(--radius) 0 0;
}

.page-contact .channel-card:nth-child(2)::before {
  background: var(--mist-mid);
}

.page-contact .channel-card:nth-child(3)::before {
  background: var(--clay-lit);
}

.page-contact .channel-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.page-contact .channel-for {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--c-ink-soft);
}

.page-contact .channel-tpl {
  padding: 0.7rem 0.8rem;
  background: var(--stub);
  border: 1px dashed rgba(20, 24, 28, 0.32);
  border-radius: var(--radius);
}

.page-contact .tpl-label {
  margin: 0 0 0.3rem;
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  color: var(--relay);
}

.page-contact .tpl-code {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  line-height: 1.62;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .channel-note {
  margin: 0;
  padding-left: 0.7rem;
  border-left: 2px solid var(--clay-lit);
  font-size: 0.875rem;
  line-height: 1.72;
  color: var(--relay);
}

.page-contact .channel-more {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--c-line);
}

.page-contact .channel-more summary {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--mist-mid);
}

.page-contact .channel-more summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-more summary::before {
  content: "+";
  display: inline-block;
  width: 1rem;
  font-family: var(--font-data);
  font-size: 1rem;
  line-height: 1;
  color: var(--clay);
}

.page-contact .channel-more[open] summary::before {
  content: "\2013";
}

.page-contact .channel-more summary:focus-visible {
  outline: 2px solid var(--flare);
  outline-offset: 3px;
  box-shadow: 0 0 0 4px rgba(20, 24, 28, 0.18);
}

.page-contact .channel-list {
  margin: 0.65rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-contact .channel-list li {
  margin-bottom: 0.3rem;
}

.page-contact .channel-list li:last-child {
  margin-bottom: 0;
}

/* ---------- 联系信息带 ---------- */
.page-contact .belt-block {
  padding-block: 0;
}

.page-contact .belt {
  position: relative;
  background: var(--mist-deep);
  color: var(--paper);
  overflow: hidden;
}

.page-contact .belt::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -70px;
  width: 340px;
  height: 340px;
  background: var(--clay);
  opacity: 0.24;
  transform: rotate(7deg);
  pointer-events: none;
}

.page-contact .belt::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 5px;
  background: var(--flare);
  opacity: 0.85;
  pointer-events: none;
}

.page-contact .belt-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.4rem, 3vw, 2rem);
  padding-block: clamp(2rem, 4.5vw, 3.2rem);
}

.page-contact .eyebrow-on-deep {
  color: var(--flare);
}

.page-contact .belt-title {
  margin: 0.35rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.45rem, 3.2vw, 2rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .belt-lead {
  margin: 0.75rem 0 0;
  max-width: 48em;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--c-paper-soft);
}

.page-contact .contact-cols {
  list-style: none;
  margin: 0;
  padding: 1.3rem 0 0;
  display: grid;
  gap: 1.1rem;
  border-top: 1px solid var(--c-line-deep);
}

.page-contact .contact-col {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.page-contact .contact-k {
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  color: var(--flare);
}

.page-contact .contact-v {
  align-self: flex-start;
  font-family: var(--font-data);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--paper);
  text-decoration: none;
  word-break: break-all;
  border-bottom: 1px solid rgba(248, 244, 236, 0.32);
  padding-bottom: 1px;
}

.page-contact .contact-v:hover {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

.page-contact .contact-v--addr {
  font-size: 0.8125rem;
  line-height: 1.7;
  word-break: break-word;
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .belt-shot {
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid rgba(248, 244, 236, 0.2);
}

.page-contact .belt-shot img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.05);
}

/* ---------- 邮件怎么写 ---------- */
.page-contact .compose-grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-contact .compose-tip {
  margin: 1.2rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--relay);
}

.page-contact .field-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .field-list li {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  column-gap: 0.85rem;
  row-gap: 0.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .field-num {
  grid-row: span 2;
  padding-top: 0.28rem;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-contact .field-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-contact .field-desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--c-ink-soft);
}

.page-contact .mail-template {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem 1.1rem;
  background: var(--stub);
  border: 1px dashed rgba(20, 24, 28, 0.3);
  border-radius: var(--radius);
  box-shadow: var(--shadow-ticket);
}

.page-contact .tpl-body {
  margin: 0.55rem 0 0;
  font-family: var(--font-data);
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--ink);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

/* ---------- 合作与授权 ---------- */
.page-contact .coop-block {
  background: var(--mist-pale);
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.1rem;
}

.page-contact .coop-card {
  padding: 1.4rem 1.3rem;
  background: var(--paper);
  border: 1px solid rgba(20, 24, 28, 0.12);
  border-left: 6px solid var(--mist-mid);
  border-radius: var(--radius);
  box-shadow: var(--shadow-ticket);
}

.page-contact .coop-card:nth-child(2) {
  border-left-color: var(--clay);
}

.page-contact .coop-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-contact .coop-lead {
  margin: 0.5rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: var(--c-ink-soft);
}

.page-contact .coop-list {
  margin: 0.9rem 0 0;
  padding-left: 1.05rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-contact .coop-list li {
  margin-bottom: 0.4rem;
}

.page-contact .coop-list li:last-child {
  margin-bottom: 0;
}

/* ---------- 备案与服务范围 ---------- */
.page-contact .registry-panel {
  display: grid;
  gap: 1.5rem;
  padding: clamp(1.4rem, 3.4vw, 2.1rem);
  background: var(--paper);
  border: 1px solid var(--c-line);
  border-left: 6px solid var(--clay);
  border-radius: var(--radius);
}

.page-contact .registry-list {
  margin: 0;
  display: grid;
  gap: 0.5rem;
}

.page-contact .registry-list > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.35rem 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed var(--c-line);
}

.page-contact .registry-list > div:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .registry-list dt {
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--relay);
}

.page-contact .registry-list dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--ink);
  text-align: right;
}

/* ---------- 回到主线 ---------- */
.page-contact .back-panel {
  display: grid;
  gap: 1.3rem;
  padding: clamp(1.4rem, 3.4vw, 2.1rem);
  background: var(--mist-pale);
  border-radius: var(--radius);
}

.page-contact .back-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 2.8vw, 1.75rem);
  line-height: 1.16;
  letter-spacing: -0.01em;
}

.page-contact .back-sub {
  margin: 0.6rem 0 0;
  max-width: 44em;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-contact .back-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem 1.4rem;
  }
}

@media (min-width: 720px) {
  .page-contact .channel-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .belt-shot {
    aspect-ratio: auto;
    height: clamp(220px, 26vw, 300px);
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-contact .compose-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .compose-copy {
    position: sticky;
    top: 1.5rem;
  }

  .page-contact .registry-panel {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: center;
  }

  .page-contact .back-panel {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1040px) {
  .page-contact .channel-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (hover: hover) {
  .page-contact .channel-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-ticket-hover);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card {
    transition: opacity 0.2s linear;
  }

  .page-contact .channel-card:hover {
    transform: none;
  }
}
<<<END>>>