.page-contact {
  --contact-cut: 22px;
  --contact-panel: linear-gradient(120deg, var(--charcoal-800), var(--ink-900) 78%);
  padding-top: clamp(18px, 3.4vw, 36px);
}

.page-contact .breadcrumb {
  margin-bottom: clamp(16px, 2.4vw, 28px);
}

.page-contact .hero-line {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 32px);
}

.page-contact .hero-line__lead {
  min-width: 0;
}

.page-contact .eyebrow {
  margin: 0 0 10px;
}

.page-contact .contact-title {
  margin: 0;
  font-size: clamp(30px, 5vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-contact .contact-lead {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text);
  opacity: 0.86;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* 渠道列表 */
.page-contact .channel-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .channel {
  position: relative;
  padding: 18px 20px 20px 24px;
  background: var(--contact-panel);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  transition: transform 200ms var(--ease-out);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--milan-red);
  transition: background 200ms var(--ease-out);
}

.page-contact .channel:hover,
.page-contact .channel:focus-within {
  transform: translateY(-2px);
}

.page-contact .channel:hover::before,
.page-contact .channel:focus-within::before {
  background: var(--cyan);
}

.page-contact .channel__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
}

.page-contact .channel__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--milan-red);
}

.page-contact .channel__name {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-contact .channel__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  word-break: break-word;
}

.page-contact .channel__value--mail {
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.7vw, 16px);
  letter-spacing: 0.02em;
  word-break: break-all;
}

.page-contact .channel__value--addr {
  font-family: var(--font-cn);
  font-size: clamp(14px, 1.8vw, 16px);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.6;
}

.page-contact .channel__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 图片 */
.page-contact .figure-note {
  margin: 24px 0 0;
}

.page-contact .channel-figure {
  margin-top: 26px;
}

.page-contact .topic-figure {
  margin-top: 18px;
}

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

.page-contact .figure-note .media__caption {
  display: block;
  margin-top: 8px;
}

/* 主题切换卡 */
.page-contact .topic-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--ink-900);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
}

.page-contact .topic-card__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.page-contact .topic-switch {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.page-contact .topic-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .topic-switch__label {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  color: var(--muted);
  cursor: pointer;
  transition: color 160ms var(--ease-out), border-color 160ms var(--ease-out), background 160ms var(--ease-out);
}

.page-contact .topic-switch__label:hover {
  color: var(--text);
  border-color: rgba(34, 211, 238, 0.55);
}

.page-contact .topic-switch__input:checked + .topic-switch__label {
  color: var(--text);
  border-color: var(--fluoro);
  background: rgba(232, 255, 58, 0.08);
}

.page-contact .topic-switch__input:focus-visible + .topic-switch__label {
  outline: 2px solid var(--fluoro);
  outline-offset: 2px;
}

.page-contact .topic-panels {
  flex-basis: 100%;
  margin-top: 12px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-contact .topic-panel {
  display: none;
}

.page-contact #topic-fix:checked ~ .topic-panels .topic-panel--fix,
.page-contact #topic-use:checked ~ .topic-panels .topic-panel--use,
.page-contact #topic-coop:checked ~ .topic-panels .topic-panel--coop,
.page-contact #topic-privacy:checked ~ .topic-panels .topic-panel--privacy {
  display: block;
}

.page-contact .topic-panel__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  opacity: 0.9;
}

.page-contact .topic-panel ul {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

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

.page-contact .topic-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-contact .topic-panel a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .topic-panel a:hover {
  color: var(--fluoro);
}

.page-contact .topic-panel__foot {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.9;
  color: var(--muted);
}

/* 通用区块头 */
.page-contact .block-head {
  display: grid;
  gap: 4px;
  margin-bottom: 16px;
}

.page-contact .block-title {
  margin: 0;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.24;
}

/* 准备事项 */
.page-contact .prep-band {
  margin-top: clamp(42px, 6vw, 82px);
}

.page-contact .prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .prep__item {
  background: var(--ink-900);
  padding: 22px 20px 24px;
}

.page-contact .prep__icon {
  display: block;
  width: 32px;
  height: 32px;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-contact .prep__item h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.page-contact .prep__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* 纠错与合作错位双栏 */
.page-contact .split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.6vw, 36px);
  margin-top: clamp(42px, 6vw, 82px);
}

.page-contact .split__lead {
  margin: 0 0 6px;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .flow {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .flow__step {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line);
}

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

.page-contact .flow__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--milan-red);
  padding-top: 3px;
}

.page-contact .flow__step h3 {
  margin: 0 0 4px;
  font-size: 15px;
  font-weight: 700;
}

.page-contact .flow__step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .coop-card {
  padding: clamp(20px, 2.8vw, 28px);
  background: var(--paper);
  color: var(--ink-950);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--contact-cut)), calc(100% - var(--contact-cut)) 100%, 0 100%);
}

.page-contact .coop-card .eyebrow {
  color: var(--deep-red);
}

.page-contact .coop-card .block-title {
  color: var(--ink-950);
}

.page-contact .coop-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(10, 11, 13, 0.78);
}

.page-contact .coop-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .coop-list li {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(10, 11, 13, 0.78);
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(10, 11, 13, 0.14);
}

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

.page-contact .coop-list__key {
  display: inline-block;
  min-width: 3.4em;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--deep-red);
}

.page-contact .coop-card__foot {
  margin: 16px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.9;
  color: rgba(10, 11, 13, 0.6);
}

/* 响应时段 */
.page-contact .clock {
  margin-top: clamp(42px, 6vw, 82px);
}

.page-contact .clock__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding: 22px 22px 24px;
  background: linear-gradient(100deg, var(--ink-900), var(--ink-950) 72%);
  border-left: 4px solid var(--fluoro);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-contact .clock__time {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--text);
  line-height: 1.15;
}

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

/* 备案条 */
.page-contact .colophon {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-top: clamp(42px, 6vw, 82px);
  padding: clamp(22px, 3.4vw, 36px);
  background: var(--paper);
  color: var(--ink-950);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
}

.page-contact .colophon__title {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink-950);
}

.page-contact .colophon__text {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(10, 11, 13, 0.78);
}

.page-contact .colophon__text:last-child {
  margin-bottom: 0;
}

.page-contact .colophon__list {
  margin: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-contact .colophon__list > div {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(10, 11, 13, 0.16);
}

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

.page-contact .colophon__list dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(10, 11, 13, 0.58);
}

.page-contact .colophon__list dd {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-950);
  word-break: break-word;
}

@media (min-width: 760px) {
  .page-contact .prep {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .clock__inner {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    align-items: center;
    gap: 28px;
    padding: 26px 28px;
  }
}

@media (min-width: 960px) {
  .page-contact .hero-line {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .hero-line__aside {
    position: sticky;
    top: 20px;
  }

  .page-contact .split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-contact .split__coop {
    margin-top: 56px;
  }

  .page-contact .colophon {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .channel::before,
  .page-contact .topic-switch__label {
    transition: none;
  }

  .page-contact .channel:hover,
  .page-contact .channel:focus-within {
    transform: none;
  }
}
<<<END>>>