.page-contact {
  --ct-stroke: rgba(20, 22, 26, .16);
  --ct-shadow: 0 18px 40px -28px rgba(14, 59, 46, .55);
  display: block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-contact .shell {
  position: relative;
}

/* ===== 首屏 ===== */
.page-contact .ct-head {
  position: relative;
  padding-block: clamp(22px, 4vw, 46px) clamp(34px, 5vw, 68px);
  border-bottom: 1px solid var(--ct-stroke);
  background-image:
    linear-gradient(180deg, rgba(30, 138, 99, .13), rgba(246, 243, 236, 0) 62%),
    repeating-linear-gradient(90deg, rgba(14, 59, 46, .06) 0 1px, transparent 1px 96px);
}

.page-contact .ct-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 7px;
  background-image: repeating-linear-gradient(90deg, var(--ct-stroke) 0 1px, transparent 1px 11px);
  pointer-events: none;
}

.page-contact .ct-head__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .ct-head__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(30px, 5.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -.012em;
  color: var(--deep-pitch);
  max-width: 20ch;
}

.page-contact .ct-head__lede {
  margin: 0;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.8;
  color: var(--graphite);
  max-width: 54ch;
}

.page-contact .ct-head__actions {
  margin-top: clamp(18px, 2.6vw, 28px);
}

.page-contact .ct-head__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--deep-pitch);
}

.page-contact .ct-head__media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -9px;
  height: 6px;
  background-image: repeating-linear-gradient(90deg, rgba(20, 22, 26, .45) 0 1px, transparent 1px 14px);
  pointer-events: none;
}

.page-contact .ct-head__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ===== 分区标题 ===== */
.page-contact .ct-sec-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3.4vw, 42px);
}

.page-contact .ct-sec-head__idx,
.page-contact .ct-fix__idx,
.page-contact .ct-subs__idx {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green-ink);
}

.page-contact .ct-sec-head__idx::before,
.page-contact .ct-fix__idx::before,
.page-contact .ct-subs__idx::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--orange);
  flex: 0 0 auto;
}

.page-contact .ct-sec-head__title,
.page-contact .ct-fix__title,
.page-contact .ct-subs__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.16;
  letter-spacing: -.006em;
  color: var(--deep-pitch);
  max-width: 22ch;
}

.page-contact .ct-sec-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
  max-width: 48ch;
}

/* ===== 联系渠道 ===== */
.page-contact .ct-channels {
  padding-block: clamp(38px, 6vw, 78px);
}

.page-contact .ct-channels__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 3.4vw, 44px);
}

.page-contact .ct-cards {
  display: grid;
  gap: 14px;
}

.page-contact .ct-card {
  --ct-x: 0px;
  --ct-rot: 0deg;
  position: relative;
  padding: clamp(20px, 2.4vw, 30px) clamp(18px, 2.2vw, 28px);
  background: #ffffff;
  border: 1px solid var(--ct-stroke);
  border-left: 3px solid var(--pitch-mid);
  box-shadow: var(--ct-shadow);
  transform: translateX(var(--ct-x)) rotate(var(--ct-rot));
  transition: transform var(--dur) var(--ease), border-left-color var(--dur) var(--ease);
}

.page-contact .ct-card:hover {
  border-left-color: var(--green);
  transform: translateX(var(--ct-x)) translateY(-2px) rotate(var(--ct-rot));
}

.page-contact .ct-card__idx {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--blue-ink);
}

.page-contact .ct-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.3;
  color: var(--deep-pitch);
}

.page-contact .ct-card__desc {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--graphite);
}

.page-contact .ct-card__value {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--ct-stroke);
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.7vw, 18px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--green-ink);
  word-break: break-all;
}

.page-contact .ct-card__value--tel {
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: .02em;
  color: var(--orange-ink);
}

.page-contact .ct-card__value--addr {
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
  word-break: normal;
}

.page-contact .ct-card__meta {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mid-gray);
}

.page-contact .ct-card__copy {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  padding: 9px 16px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--deep-pitch);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .ct-card__copy:hover {
  background: var(--deep-pitch);
  border-color: var(--deep-pitch);
  color: var(--warm-white);
}

.page-contact .ct-channels__aside {
  display: grid;
  gap: clamp(16px, 2.2vw, 24px);
  align-content: start;
}

.page-contact .ct-figure {
  margin: 0;
  border: 1px solid var(--ct-stroke);
  background: #ffffff;
}

.page-contact .ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .ct-figure__cap {
  padding: 10px 14px;
  border-top: 1px solid var(--ct-stroke);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mid-gray);
}

.page-contact .ct-channels__note p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
}

/* ===== 纠错流程（深色带） ===== */
.page-contact .ct-fix {
  padding-block: clamp(40px, 6vw, 78px);
  background-color: var(--deep-pitch);
  background-image: repeating-linear-gradient(135deg, rgba(246, 243, 236, .05) 0 1px, transparent 1px 18px);
  color: var(--warm-white);
}

.page-contact .ct-fix__idx {
  color: var(--green);
}

.page-contact .ct-fix__title {
  margin-top: 12px;
  color: var(--warm-white);
}

.page-contact .ct-fix__lede {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(246, 243, 236, .76);
  max-width: 58ch;
}

.page-contact .ct-steps {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-contact .ct-step {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 20px 0 20px 32px;
  border-top: 1px solid var(--line-invert);
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 25px;
  width: 10px;
  height: 10px;
  background: var(--blue);
}

.page-contact .ct-step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--green);
}

.page-contact .ct-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  line-height: 1.4;
  color: var(--warm-white);
}

.page-contact .ct-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(246, 243, 236, .72);
}

/* ===== 合作形式 ===== */
.page-contact .ct-coop {
  padding-block: clamp(38px, 6vw, 78px);
}

.page-contact .ct-tabs {
  position: relative;
}

.page-contact .ct-tabs__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.page-contact .ct-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
}

.page-contact .ct-tabs__label {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  padding: 11px 18px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--graphite);
  cursor: pointer;
  user-select: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .ct-tabs__label:hover {
  border-color: var(--blue);
  color: var(--deep-pitch);
}

.page-contact #ct-coop-1:checked ~ .ct-tabs__bar [for="ct-coop-1"],
.page-contact #ct-coop-2:checked ~ .ct-tabs__bar [for="ct-coop-2"],
.page-contact #ct-coop-3:checked ~ .ct-tabs__bar [for="ct-coop-3"] {
  background: var(--deep-pitch);
  border-color: var(--deep-pitch);
  color: var(--warm-white);
}

.page-contact .ct-tabs__radio:focus-visible ~ .ct-tabs__bar {
  outline: 2px solid var(--blue);
  outline-offset: 4px;
}

.page-contact .ct-panel {
  display: none;
  padding: clamp(20px, 2.8vw, 34px);
  border: 1px solid var(--ct-stroke);
  border-top: 3px solid var(--pitch-light);
  background: #ffffff;
  box-shadow: var(--ct-shadow);
}

.page-contact #ct-coop-1:checked ~ .ct-tabs__panels > .ct-panel--1,
.page-contact #ct-coop-2:checked ~ .ct-tabs__panels > .ct-panel--2,
.page-contact #ct-coop-3:checked ~ .ct-tabs__panels > .ct-panel--3 {
  display: block;
}

.page-contact .ct-panel__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 23px);
  color: var(--deep-pitch);
}

.page-contact .ct-panel__desc {
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--graphite);
  max-width: 62ch;
}

.page-contact .ct-panel__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--blue-ink);
}

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

.page-contact .ct-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 15px;
  border: 1px solid var(--ct-stroke);
  background: var(--paper);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .ct-check:hover {
  border-color: var(--blue);
}

.page-contact .ct-check__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 3px 0 0;
  border: 1px solid var(--line-strong);
  background: #ffffff;
  cursor: pointer;
}

.page-contact .ct-check__box:checked {
  background: var(--pitch-mid);
  border-color: var(--pitch-mid);
}

.page-contact .ct-check__box:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border: solid var(--warm-white);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .ct-check__box:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-contact .ct-check__text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--graphite);
}

/* ===== 订阅与账号 ===== */
.page-contact .ct-subs {
  padding-block: 0 clamp(38px, 5vw, 68px);
}

.page-contact .ct-subs__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(24px, 3.4vw, 42px);
  border: 1px solid var(--ct-stroke);
  border-left: 4px solid var(--orange);
  background: #ffffff;
  box-shadow: var(--ct-shadow);
}

.page-contact .ct-subs__title {
  margin-top: 12px;
  font-size: clamp(22px, 2.9vw, 32px);
}

.page-contact .ct-subs__desc {
  margin: 12px 0 20px;
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--graphite);
  max-width: 62ch;
}

.page-contact .ct-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  align-content: start;
  padding: 18px clamp(16px, 2.4vw, 24px);
  border: 1px solid var(--ct-stroke);
  background: var(--paper);
}

.page-contact .ct-quick__link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--green-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .ct-quick__link:hover {
  color: var(--blue-ink);
  border-bottom-color: var(--blue);
}

/* ===== 等高线收边 ===== */
.page-contact .ct-outro {
  background: var(--deep-pitch);
  padding-block: clamp(22px, 4vw, 44px);
}

.page-contact .ct-contour {
  display: block;
  width: 100%;
  height: clamp(70px, 10vw, 140px);
  color: rgba(43, 210, 255, .55);
}

.page-contact .ct-contour path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  vector-effect: non-scaling-stroke;
}

.page-contact .ct-contour path:nth-child(2) { color: rgba(55, 242, 160, .45); }
.page-contact .ct-contour path:nth-child(3) { color: rgba(246, 243, 236, .30); }
.page-contact .ct-contour path:nth-child(4) { color: rgba(55, 242, 160, .35); }
.page-contact .ct-contour path:nth-child(5) { color: rgba(43, 210, 255, .38); }

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-contact .ct-cards {
    gap: 14px;
    padding-right: 34px;
  }

  .page-contact .ct-card:nth-child(2) {
    --ct-x: 17px;
    --ct-rot: .4deg;
  }

  .page-contact .ct-card:nth-child(3) {
    --ct-x: 34px;
    --ct-rot: -.35deg;
  }

  .page-contact .ct-quick {
    flex-direction: column;
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: clamp(28px, 4vw, 60px);
  }

  .page-contact .ct-sec-head {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: end;
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-contact .ct-sec-head__idx {
    grid-column: 1 / -1;
  }

  .page-contact .ct-sec-head__title {
    grid-column: 1;
  }

  .page-contact .ct-sec-head__note {
    grid-column: 2;
    padding-bottom: 4px;
  }

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

  .page-contact .ct-subs__box {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    align-items: center;
  }
}

@media (min-width: 820px) {
  .page-contact .ct-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .ct-step {
    padding: 30px 22px 0 0;
    border-top: 1px solid var(--line-invert);
  }

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

  .page-contact .ct-step::before {
    top: -5px;
    left: 0;
    width: 9px;
    height: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-card:hover,
  .page-contact .ct-card__copy,
  .page-contact .ct-tabs__label,
  .page-contact .ct-quick__link,
  .page-contact .ct-check {
    transition: none;
  }

  .page-contact .ct-card:hover {
    transform: translateX(var(--ct-x)) rotate(var(--ct-rot));
  }
}
<<<END>>>