.page-contact {
  --c-panel-top: #EFDCA9;
  --c-panel-bottom: #D8BB74;
  --c-ok: #2C6355;
  --c-paper-line: rgba(11, 27, 43, 0.18);
  --c-paper-text: #3B4854;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-contact .contact-hero {
  position: relative;
  padding: 0 0 clamp(40px, 6vw, 80px);
  background:
    radial-gradient(120% 90% at 88% -10%, rgba(201, 162, 39, 0.18), transparent 62%),
    radial-gradient(80% 70% at -10% 110%, rgba(79, 138, 123, 0.16), transparent 60%),
    var(--ink);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(230, 206, 147, 0.14) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.35;
  pointer-events: none;
}

.page-contact .hero-inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(16px, 3vw, 28px);
}

.page-contact .breadcrumb {
  font-size: 12.5px;
  color: var(--slate);
}

.page-contact .hero-head {
  margin-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--line-gold);
}

.page-contact .hero-eyebrow {
  color: var(--gold);
  letter-spacing: 0.18em;
}

.page-contact .hero-title {
  margin: 10px 0 0;
  font-size: clamp(29px, 5.2vw, 58px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: 0.05em;
  color: var(--paper);
  max-width: 22em;
}

.page-contact .hero-lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: rgba(242, 234, 219, 0.84);
}

.page-contact .hero-anchors {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .hero-anchors a {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 13px;
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-contact .hero-anchors a:hover,
.page-contact .hero-anchors a:focus-visible {
  color: var(--gold-soft);
  border-bottom-color: var(--gold);
}

.page-contact .hero-anchors a:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: 3px;
}

/* 渠道切换 */
.page-contact .channel-tabs {
  display: block;
  margin-top: clamp(24px, 4vw, 44px);
}

.page-contact .channel-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-gold);
}

.page-contact .channel-tab {
  position: relative;
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  grid-template-rows: auto auto auto;
  gap: 3px 12px;
  width: 100%;
  padding: 16px 14px 16px 14px;
  text-align: left;
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line-gold);
  color: var(--paper);
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s ease;
}

.page-contact .channel-tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 0.2s ease;
}

.page-contact .channel-tab:hover {
  background: rgba(230, 206, 147, 0.06);
}

.page-contact .channel-tab[aria-selected="true"] {
  background: rgba(201, 162, 39, 0.11);
}

.page-contact .channel-tab[aria-selected="true"]::before {
  background: var(--gold);
}

.page-contact .channel-tab:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: -2px;
}

.page-contact .channel-num {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-contact .channel-name {
  grid-column: 2;
  grid-row: 1;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-contact .channel-value {
  grid-column: 2;
  grid-row: 2;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.55;
  color: var(--gold-soft);
  overflow-wrap: anywhere;
}

.page-contact .channel-hint {
  grid-column: 1 / -1;
  grid-row: 3;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--slate);
}

.page-contact .panel-col {
  display: flex;
  flex-direction: column;
  gap: clamp(16px, 2.4vw, 24px);
  margin-top: 22px;
}

.page-contact .hero-figure {
  margin: 0;
  border: 1px solid var(--line-gold);
  background: var(--ink-2);
}

.page-contact .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 640;
  object-fit: cover;
}

.page-contact .channel-panel {
  padding: clamp(20px, 3vw, 30px);
  color: var(--ink);
  background: linear-gradient(158deg, var(--c-panel-top) 0%, var(--gold-soft) 55%, var(--c-panel-bottom) 100%);
  border-left: 3px solid var(--gold);
}

.page-contact .channel-panel[hidden] {
  display: none;
}

.page-contact .panel-title {
  margin: 0;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-contact .panel-text {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .panel-list {
  display: grid;
  gap: 8px;
  margin: 15px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .panel-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-contact .panel-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--ink);
}

.page-contact .panel-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid rgba(11, 27, 43, 0.22);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-contact .panel-note a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-contact .panel-note a:hover {
  border-bottom-color: var(--ink);
}

/* 复制按钮与提示 */
.page-contact .copy-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 18px;
}

.page-contact .copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold-soft);
  background: transparent;
  border: 1px solid var(--gold);
  border-radius: 0;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-contact .copy-btn:hover {
  background: rgba(201, 162, 39, 0.16);
}

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

.page-contact .channel-panel .copy-btn {
  color: var(--gold-soft);
  background: var(--ink);
  border-color: var(--ink);
}

.page-contact .channel-panel .copy-btn:hover {
  background: var(--ink-2);
  border-color: var(--gold);
}

.page-contact .copy-feedback {
  display: inline-block;
  min-height: 1em;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--c-ok);
}

/* 通用区块头与链接 */
.page-contact .block-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid var(--line-gold);
}

.page-contact .block-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .block-title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .text-link {
  color: inherit;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-contact .text-link:hover {
  border-bottom-color: currentColor;
}

/* 02 邮件 */
.page-contact .mail-section {
  padding: clamp(38px, 6vw, 78px) 0;
  background: var(--paper);
  color: var(--black);
}

.page-contact .on-paper .block-head {
  border-top-color: var(--c-paper-line);
}

.page-contact .on-paper .block-num {
  color: #7D6210;
}

.page-contact .on-paper .block-title {
  color: var(--black);
}

.page-contact .mail-grid {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: 24px;
}

.page-contact .mail-body {
  max-width: 38em;
}

.page-contact .mail-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-paper-text);
}

.page-contact .mail-list {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: mailitem;
}

.page-contact .mail-list li {
  position: relative;
  counter-increment: mailitem;
  padding: 12px 14px 12px 46px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--black);
  background: var(--ivory);
  border-left: 2px solid var(--gold-soft);
}

.page-contact .mail-list li::before {
  content: counter(mailitem, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #7D6210;
}

.page-contact .mail-aside {
  padding: 20px 18px;
  border: 1px solid var(--c-paper-line);
  border-top: 3px solid var(--gold);
}

.page-contact .aside-label {
  margin: 0;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #6A7683;
}

.page-contact .aside-value {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  color: var(--black);
}

.page-contact .aside-text {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-paper-text);
}

/* 03 反馈清单 */
.page-contact .check-section {
  padding: clamp(38px, 6vw, 78px) 0;
  background: var(--ink);
  color: var(--paper);
}

.page-contact .check-lede {
  margin: 20px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 234, 219, 0.82);
}

.page-contact .check-grid {
  display: grid;
  gap: 10px;
  margin-top: 24px;
}

.page-contact .check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 14px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  background: rgba(20, 40, 60, 0.6);
  border: 1px solid var(--line-gold);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-contact .check-item:hover {
  border-color: var(--line-gold-strong);
}

.page-contact .check-item:has(input:checked) {
  border-color: var(--celadon);
  background: rgba(79, 138, 123, 0.12);
}

.page-contact .check-box {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 2px;
  background: transparent;
  border: 1px solid var(--line-gold-strong);
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.page-contact .check-box:checked {
  background: var(--celadon);
  border-color: var(--celadon);
}

.page-contact .check-box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid var(--ivory);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .check-box:focus-visible {
  outline: 2px solid var(--gold-soft);
  outline-offset: 2px;
}

.page-contact .check-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
  margin-top: 22px;
}

.page-contact .check-actions .copy-btn {
  color: var(--ink);
  background: var(--gold);
  border-color: var(--gold);
}

.page-contact .check-actions .copy-btn:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

.page-contact .check-actions .copy-feedback {
  color: var(--celadon);
}

.page-contact .check-foot {
  margin: 22px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-gold);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .check-foot a {
  margin: 0 2px;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold-strong);
}

.page-contact .check-foot a:hover {
  border-bottom-color: var(--gold);
}

/* 04 合作 */
.page-contact .coop-section {
  padding: clamp(38px, 6vw, 78px) 0;
  background: var(--ivory);
  color: var(--black);
}

.page-contact .coop-grid {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: 24px;
}

.page-contact .coop-body {
  max-width: 40em;
}

.page-contact .coop-body > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--c-paper-text);
}

.page-contact .coop-list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-paper-text);
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  background: var(--gold);
}

.page-contact .coop-list strong {
  color: var(--black);
  letter-spacing: 0.02em;
}

.page-contact .coop-actions .copy-btn {
  color: var(--gold-soft);
  background: var(--ink);
  border-color: var(--ink);
}

.page-contact .coop-actions .copy-btn:hover {
  background: var(--ink-2);
  border-color: var(--gold);
}

.page-contact .coop-aside {
  padding: 20px 18px;
  border: 1px solid var(--c-paper-line);
  border-left: 3px solid var(--gold);
}

.page-contact .coop-links {
  display: grid;
  gap: 16px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop-links li {
  display: grid;
  gap: 4px;
}

.page-contact .coop-links .text-link {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--black);
}

.page-contact .coop-links span {
  font-size: 12.5px;
  line-height: 1.7;
  color: #6A7683;
}

/* 05 处理流程 */
.page-contact .process-section {
  padding: clamp(38px, 6vw, 78px) 0;
  background: var(--ink-2);
  color: var(--paper);
}

.page-contact .process-grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  margin-top: 24px;
}

.page-contact .process-lede {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(242, 234, 219, 0.84);
}

.page-contact .process-steps {
  margin: 26px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
  border-left: 1px solid var(--line-gold);
}

.page-contact .step {
  position: relative;
  padding-bottom: 26px;
}

.page-contact .step:last-child {
  padding-bottom: 0;
}

.page-contact .step::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--gold);
}

.page-contact .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .step-title {
  margin: 4px 0 0;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--paper);
}

.page-contact .step-text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate);
}

.page-contact .process-foot {
  margin: 26px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(242, 234, 219, 0.78);
}

.page-contact .process-foot a {
  margin: 0 2px;
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold-strong);
}

.page-contact .process-foot a:hover {
  border-bottom-color: var(--gold);
}

.page-contact .process-figure {
  margin: 0;
  border: 1px solid var(--line-gold);
  background: var(--ink);
}

.page-contact .process-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 700;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-contact .channel-tabs {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.65fr);
    gap: clamp(24px, 4vw, 52px);
    align-items: start;
  }

  .page-contact .panel-col {
    margin-top: 0;
  }

  .page-contact .channel-tab {
    padding: 20px 18px 20px 18px;
  }

  .page-contact .channel-name {
    font-size: 18px;
  }

  .page-contact .mail-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .process-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .process-figure {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (max-width: 359px) {
  .page-contact .check-item {
    padding: 11px 10px;
    font-size: 13.5px;
  }

  .page-contact .copy-btn {
    width: 100%;
    justify-content: center;
  }
}
<<<END>>>