.page-contact {
  --contact-card-line: rgba(16, 30, 41, .16);
  --contact-paper-shadow: 0 1px 0 rgba(16, 30, 41, .06), 0 10px 26px -18px rgba(7, 38, 61, .55);
  --contact-grid-line: rgba(110, 147, 168, .16);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 36px) 0 clamp(32px, 6vw, 64px);
  background: var(--foam);
  border-bottom: 1px solid var(--line-ink);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--contact-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--contact-grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 28px;
}

.page-contact .contact-hero__text { order: 1; }

.page-contact .contact-hero__media {
  order: 2;
  margin: 0;
  padding: 8px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: var(--contact-paper-shadow);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.82) contrast(1.03);
}

.page-contact .contact-hero__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-ink);
  display: grid;
  gap: 14px;
}

.page-contact .contact-hero__fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-contact .contact-hero__num {
  flex: 0 0 auto;
  min-width: 2.4em;
  font-size: clamp(22px, 5vw, 30px);
  line-height: 1;
  color: var(--sea-700);
}

.page-contact .contact-hero__unit {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

@media (min-width: 900px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(240px, 4.4fr) minmax(0, 7fr);
    align-items: end;
    gap: clamp(32px, 5vw, 68px);
  }
  .page-contact .contact-hero__media { order: 1; margin-bottom: 4px; }
  .page-contact .contact-hero__text { order: 2; }
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-contact .contact-hero__fact {
    flex-direction: column;
    gap: 6px;
  }
}

/* ---------- 通道区 ---------- */
.page-contact .contact-channel__head {
  max-width: 760px;
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-contact .contact-channel__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .contact-channel__grid {
  display: grid;
  gap: 32px;
}

.page-contact .contact-channel__col {
  display: grid;
  gap: 18px;
  align-content: start;
  min-width: 0;
}

.page-contact .contact-channel__main { min-width: 0; }

@media (min-width: 960px) {
  .page-contact .contact-channel__grid {
    grid-template-columns: minmax(280px, 352px) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 64px);
    align-items: start;
  }
  .page-contact .contact-channel__col { gap: 22px; }
}

/* 渠道纸卡 */
.page-contact .contact-card {
  position: relative;
  isolation: isolate;
  padding: 20px;
  background: var(--foam);
  border: 1px solid var(--line-strong);
  box-shadow: var(--contact-paper-shadow);
  transition: transform .18s ease, box-shadow .18s ease;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 8px -7px -7px 8px;
  z-index: -1;
  background: var(--paper);
  border: 1px solid var(--contact-card-line);
}

.page-contact .contact-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 10px;
}

.page-contact .contact-card__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--sea-900);
}

.page-contact .contact-card__value {
  margin: 0 0 10px;
  font-size: clamp(15px, 3.6vw, 18px);
  line-height: 1.5;
  color: var(--sea-700);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .contact-card__copy { margin-top: 14px; }

@media (min-width: 960px) {
  .page-contact .contact-card--mail {
    transform: rotate(-1.6deg);
  }
  .page-contact .contact-card--mail:hover,
  .page-contact .contact-card--mail:focus-within {
    transform: rotate(0deg) translateY(-4px);
    box-shadow: 0 2px 0 rgba(16, 30, 41, .06), 0 18px 34px -20px rgba(7, 38, 61, .6);
  }
  .page-contact .contact-card--phone:hover {
    transform: translateY(-4px);
  }
}

/* ---------- 标题写法对照 ---------- */
.page-contact .contact-guide {
  padding-bottom: clamp(24px, 4vw, 36px);
  border-bottom: 1px solid var(--line-ink);
  margin-bottom: clamp(24px, 4vw, 36px);
}

.page-contact .contact-guide__intro {
  margin: 12px 0 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .contact-guide__rows {
  display: grid;
  gap: 12px;
}

.page-contact .contact-guide__row {
  display: grid;
  gap: 8px;
}

.page-contact .contact-guide__cell {
  padding: 12px 14px;
  border: 1px solid var(--contact-card-line);
  border-left-width: 4px;
  background: var(--paper);
}

.page-contact .contact-guide__cell--bad { border-left-color: var(--mist); }

.page-contact .contact-guide__cell--good {
  background: #fff;
  border-left-color: var(--coral-600);
}

.page-contact .contact-guide__label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-contact .contact-guide__cell--good .contact-guide__label { color: var(--coral-600); }

.page-contact .contact-guide__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-guide__cell--bad .contact-guide__text {
  color: var(--ink-soft);
  text-decoration: line-through;
  text-decoration-color: rgba(110, 147, 168, .7);
}

.page-contact .contact-guide__foot {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--sand);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

@media (min-width: 640px) {
  .page-contact .contact-guide__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.35fr);
    align-items: stretch;
    gap: 10px;
  }
}

/* ---------- 表单 ---------- */
.page-contact .contact-form {
  padding: clamp(20px, 4vw, 32px);
  background: var(--foam);
  border: 1px solid var(--line-strong);
  border-top: 4px solid var(--sea-700);
  box-shadow: var(--contact-paper-shadow);
}

.page-contact .contact-form__intro {
  margin: 12px 0 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .contact-form__field {
  margin-bottom: 18px;
}

.page-contact .contact-form__label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 7px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--sea-900);
}

.page-contact .contact-form__req {
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--coral-600);
  border: 1px solid rgba(228, 87, 46, .45);
}

.page-contact .contact-form__input,
.page-contact .contact-form__area {
  display: block;
  width: 100%;
  max-width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-contact .contact-form__area {
  resize: vertical;
  min-height: 120px;
}

.page-contact .contact-form__input::placeholder,
.page-contact .contact-form__area::placeholder {
  color: var(--mist);
}

.page-contact .contact-form__input:focus,
.page-contact .contact-form__area:focus {
  outline: none;
  border-color: var(--coral-600);
  box-shadow: 0 0 0 3px rgba(228, 87, 46, .16);
}

.page-contact .contact-form__input:not(:placeholder-shown):invalid {
  border-color: var(--coral-600);
}

.page-contact .contact-form__hint {
  margin: 7px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
}

/* 问题类型切换 */
.page-contact .topic-switch {
  display: block;
}

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

.page-contact .topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .topic-chip {
  padding: 7px 14px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ink-soft);
  background: #fff;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-contact .topic-chip:hover {
  border-color: var(--coral-600);
  color: var(--coral-600);
}

.page-contact #cf-topic-reg:checked ~ .topic-chips label[for="cf-topic-reg"],
.page-contact #cf-topic-nav:checked ~ .topic-chips label[for="cf-topic-nav"],
.page-contact #cf-topic-batch:checked ~ .topic-chips label[for="cf-topic-batch"] {
  background: var(--coral-600);
  border-color: var(--coral-600);
  color: #fff;
}

.page-contact .topic-radio:focus-visible ~ .topic-chips .topic-chip {
  outline: 2px dashed var(--coral-600);
  outline-offset: 2px;
}

.page-contact .topic-panels {
  margin-top: 12px;
  padding: 12px 14px;
  background: var(--paper);
  border-left: 3px solid var(--sand);
}

.page-contact .topic-panel {
  display: none;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-contact .topic-panel .vf-num {
  color: var(--sea-700);
  font-size: 13px;
  letter-spacing: 0;
}

.page-contact #cf-topic-reg:checked ~ .topic-panels .topic-panel--reg,
.page-contact #cf-topic-nav:checked ~ .topic-panels .topic-panel--nav,
.page-contact #cf-topic-batch:checked ~ .topic-panels .topic-panel--batch {
  display: block;
}

/* 发送前确认 */
.page-contact .contact-form__confirm {
  margin-top: 24px;
  padding: 18px;
  background: var(--paper);
  border: 1px solid var(--contact-card-line);
}

.page-contact .contact-form__confirmtitle {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--sea-900);
}

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

.page-contact .contact-form__checks li {
  position: relative;
  padding-left: 22px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink);
}

.page-contact .contact-form__checks li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .55em;
  width: 10px;
  height: 10px;
  border: 1px solid var(--sea-700);
  background: #fff;
}

.page-contact .contact-form__note {
  margin: 14px 0 0;
  font-size: 12px;
  line-height: 1.65;
  color: var(--ink-soft);
}

/* ---------- 响应说明（深色章节） ---------- */
.page-contact .contact-response__grid {
  display: grid;
  gap: 28px;
}

.page-contact .contact-response__media {
  margin: 0;
  padding: 8px;
  background: rgba(246, 243, 236, .06);
  border: 1px solid var(--line-light);
}

.page-contact .contact-response__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
  filter: saturate(.7) contrast(1.05);
}

.page-contact .contact-response__caption {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-contact .contact-response__lede {
  margin: 12px 0 24px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(246, 243, 236, .78);
}

.page-contact .contact-response__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-response__item {
  padding: 16px 0;
  border-top: 1px solid var(--line-light);
}

.page-contact .contact-response__item dt {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--sand);
  margin-bottom: 6px;
}

.page-contact .contact-response__item dd {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(246, 243, 236, .82);
}

@media (min-width: 900px) {
  .page-contact .contact-response__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(36px, 5vw, 64px);
    align-items: start;
  }
  .page-contact .contact-response__media { margin-top: 6px; }
}

/* ---------- 快速通道 ---------- */
.page-contact .contact-fast__head {
  max-width: 720px;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-contact .contact-fast__lede {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-contact .contact-fast__grid {
  display: grid;
  gap: 16px;
}

.page-contact .contact-fast__card {
  display: block;
  padding: 20px;
  text-decoration: none;
  background: var(--foam);
  border: 1px solid var(--line-ink);
  border-top: 3px solid var(--sea-700);
  box-shadow: 0 1px 0 rgba(16, 30, 41, .04);
  transition: transform .18s ease, box-shadow .18s ease, border-top-color .18s ease;
}

.page-contact .contact-fast__card:hover,
.page-contact .contact-fast__card:focus-visible {
  transform: translateY(-4px);
  border-top-color: var(--coral-600);
  box-shadow: 0 2px 0 rgba(16, 30, 41, .06), 0 16px 30px -20px rgba(7, 38, 61, .6);
}

.page-contact .contact-fast__index {
  display: inline-block;
  margin-bottom: 10px;
  font-size: 20px;
  color: var(--mist);
}

.page-contact .contact-fast__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--sea-900);
}

.page-contact .contact-fast__desc {
  margin: 0 0 14px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-contact .contact-fast__go {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--coral-600);
}

.page-contact .contact-fast__foot {
  margin: 24px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--sand);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

@media (min-width: 700px) {
  .page-contact .contact-fast__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 1080px) {
  .page-contact .contact-fast__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }
  .page-contact .contact-fast__card:nth-child(2) { margin-top: 20px; }
  .page-contact .contact-fast__card:nth-child(3) { margin-top: -8px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .contact-fast__card,
  .page-contact .contact-form__input,
  .page-contact .contact-form__area,
  .page-contact .topic-chip {
    transition: none !important;
    transform: none !important;
  }
}
<<<END>>>