.page-contact {
  --ct-fade-fast: .18s;
  --ct-cut: 26px;
  display: block;
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-contact .ct-wrap {
  display: grid;
  gap: clamp(30px, 4.6vw, 58px);
  padding-top: clamp(14px, 2.6vw, 30px);
}

/* ---------- 首屏拼贴 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: 26px;
}

.page-contact .ct-hero__lead h1 {
  margin: 10px 0 18px;
  font-size: clamp(36px, 6.4vw, 78px);
  line-height: .96;
  letter-spacing: -.01em;
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-contact .ct-hero__frame {
  aspect-ratio: 4 / 3;
  width: 100%;
  overflow: hidden;
}

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

.page-contact .ct-quick {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .ct-quick li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  background: var(--panel);
}

.page-contact .ct-quick__k {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mute);
}

.page-contact .ct-quick__v {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  text-align: right;
}

@media (min-width: 900px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: clamp(24px, 3vw, 48px);
  }

  .page-contact .ct-hero__media {
    margin-top: 40px;
  }
}

/* ---------- 章节与斜线 ---------- */
.page-contact .ct-section {
  display: grid;
  gap: clamp(18px, 2.8vw, 30px);
}

.page-contact .ct-divider {
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--line) 0 14px, transparent 14px 28px);
  opacity: .55;
  transform: skewY(-1.2deg);
}

/* ---------- 通道切换 ---------- */
.page-contact .ct-channels {
  position: relative;
  display: grid;
  gap: 12px;
}

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

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

.page-contact .ct-tab {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 12px;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  cursor: pointer;
  transition: background var(--ct-fade-fast) var(--ease), border-color var(--ct-fade-fast) var(--ease);
}

.page-contact .ct-tab:hover {
  border-color: var(--cyan-dim);
  border-left-color: var(--cyan-dim);
}

.page-contact .ct-tab__idx {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mute);
  padding-top: 3px;
}

.page-contact .ct-tab__title {
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: .05em;
  color: var(--ink);
}

.page-contact .ct-tab__desc {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mute);
}

.page-contact #ct-ch-1:checked ~ .ct-tablist .ct-tab:nth-child(1),
.page-contact #ct-ch-2:checked ~ .ct-tablist .ct-tab:nth-child(2),
.page-contact #ct-ch-3:checked ~ .ct-tablist .ct-tab:nth-child(3) {
  background: var(--panel-2);
  border-left-color: var(--cyan);
}

.page-contact #ct-ch-1:checked ~ .ct-tablist .ct-tab:nth-child(1) .ct-tab__title,
.page-contact #ct-ch-2:checked ~ .ct-tablist .ct-tab:nth-child(2) .ct-tab__title,
.page-contact #ct-ch-3:checked ~ .ct-tablist .ct-tab:nth-child(3) .ct-tab__title {
  color: var(--cyan);
}

.page-contact #ct-ch-1:focus-visible ~ .ct-tablist .ct-tab:nth-child(1),
.page-contact #ct-ch-2:focus-visible ~ .ct-tablist .ct-tab:nth-child(2),
.page-contact #ct-ch-3:focus-visible ~ .ct-tablist .ct-tab:nth-child(3) {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

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

.page-contact #ct-ch-1:checked ~ .ct-panels > .ct-panel:nth-child(1),
.page-contact #ct-ch-2:checked ~ .ct-panels > .ct-panel:nth-child(2),
.page-contact #ct-ch-3:checked ~ .ct-panels > .ct-panel:nth-child(3) {
  display: block;
  animation: ct-panel-in .3s var(--ease) both;
}

@keyframes ct-panel-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.page-contact .ct-panel__body {
  display: grid;
  gap: 18px;
  padding: clamp(18px, 3vw, 30px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan-dim);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ct-cut)), calc(100% - var(--ct-cut)) 100%, 0 100%);
}

.page-contact .ct-panel__head {
  margin: 0;
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-contact .ct-block {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-block__title {
  margin: 0 0 8px;
  font-size: 12px;
  font-family: var(--font-mono);
  letter-spacing: .14em;
  color: var(--mute);
}

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

.page-contact .ct-block li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .ct-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8em;
  width: 7px;
  height: 1px;
  background: var(--cyan-dim);
}

.page-contact .ct-panel__foot {
  margin: 0;
  padding: 12px 14px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
  background: rgba(255, 106, 43, .07);
  border-left: 2px solid var(--orange);
}

@media (min-width: 860px) {
  .page-contact .ct-channels {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.6fr);
    gap: 20px;
    align-items: start;
  }

  .page-contact .ct-tablist {
    position: sticky;
    top: 88px;
  }
}

/* ---------- 准备清单 ---------- */
.page-contact .ct-prep {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-contact .ct-prep__list {
  display: grid;
  gap: 10px;
}

.page-contact .ct-check {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: border-color var(--ct-fade-fast) var(--ease), background var(--ct-fade-fast) var(--ease);
}

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

.page-contact .ct-check input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ct-check__box {
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--cyan-dim);
  display: grid;
  place-items: center;
}

.page-contact .ct-check__box::after {
  content: "";
  width: 8px;
  height: 8px;
  background: transparent;
  transition: background var(--ct-fade-fast) var(--ease);
}

.page-contact .ct-check input:checked + .ct-check__box {
  border-color: var(--cyan);
}

.page-contact .ct-check input:checked + .ct-check__box::after {
  background: var(--cyan);
}

.page-contact .ct-check input:checked ~ .ct-check__text b {
  color: var(--cyan);
}

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

.page-contact .ct-check__text {
  display: grid;
  gap: 4px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mute);
}

.page-contact .ct-check__text b {
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: .02em;
}

.page-contact .ct-prep__fig {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ct-prep__img {
  aspect-ratio: 5 / 3;
  overflow: hidden;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

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

.page-contact .ct-prep__fig figcaption {
  padding-left: 12px;
  border-left: 2px solid var(--orange);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

@media (min-width: 640px) {
  .page-contact .ct-prep__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-prep {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 联系信息面板 ---------- */
.page-contact .ct-contact-wrap {
  display: grid;
  gap: 14px;
}

.page-contact .ct-contact {
  border: 1px solid var(--cyan-dim);
  background:
    linear-gradient(158deg, rgba(47, 243, 214, .12), rgba(47, 243, 214, 0) 58%),
    var(--panel-2);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
}

.page-contact .ct-contact__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 40px 16px 20px;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-contact__headline {
  font-family: var(--font-display);
  font-size: 16px;
  letter-spacing: .08em;
  color: var(--ink);
}

.page-contact .ct-contact__rows {
  display: grid;
}

.page-contact .ct-contact__row {
  display: grid;
  gap: 4px;
  padding: 15px 20px;
  border-top: 1px solid var(--line);
}

.page-contact .ct-contact__row:first-child {
  border-top: 0;
}

.page-contact .ct-contact__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--mute);
}

.page-contact .ct-contact__val {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.4vw, 20px);
  line-height: 1.4;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .ct-contact__val--text {
  font-family: var(--font-body);
  font-size: 14.5px;
  color: var(--ink);
}

.page-contact .ct-contact__hint {
  margin: 0;
  padding: 14px 20px 18px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--sand);
}

.page-contact .ct-contact__aside {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-contact .ct-aside-card {
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan-dim);
  display: grid;
  gap: 8px;
}

.page-contact .ct-aside-card--warn {
  border-left-color: var(--orange);
}

.page-contact .ct-aside-card__title {
  margin: 0;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--ink);
}

.page-contact .ct-aside-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mute);
}

@media (min-width: 700px) {
  .page-contact .ct-contact__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 980px) {
  .page-contact .ct-contact-wrap {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
    gap: 18px;
  }
}

/* ---------- 处理步骤 ---------- */
.page-contact .ct-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-contact .ct-step {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .ct-step:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .ct-step__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--orange);
  padding-top: 4px;
}

.page-contact .ct-step__title {
  margin: 0 0 5px;
  font-size: 15.5px;
  letter-spacing: .03em;
  color: var(--ink);
}

.page-contact .ct-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
  max-width: 46em;
}

@media (min-width: 760px) {
  .page-contact .ct-step {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 24px;
    padding: 20px 0;
  }
}

/* ---------- 合作线索 ---------- */
.page-contact .ct-collab {
  display: grid;
  gap: 12px;
}

.page-contact .ct-collab__item {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 18px 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan-dim);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-contact .ct-collab__item h3 {
  margin: 0;
  font-size: 15px;
  letter-spacing: .04em;
  color: var(--ink);
}

.page-contact .ct-collab__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mute);
}

@media (min-width: 820px) {
  .page-contact .ct-collab {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 结尾入口 ---------- */
.page-contact .ct-cta {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3.6vw, 36px);
  background:
    repeating-linear-gradient(-8deg, rgba(47, 243, 214, .05) 0 12px, transparent 12px 26px),
    var(--panel-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}

.page-contact .ct-cta__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: .04em;
  color: var(--ink);
}

.page-contact .ct-cta__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mute);
  max-width: 40em;
}

.page-contact .ct-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 780px) {
  .page-contact .ct-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-panel,
  .page-contact .ct-tab,
  .page-contact .ct-check,
  .page-contact .ct-check__box::after {
    animation: none !important;
    transition: none !important;
  }

  .page-contact .ct-divider {
    transform: none;
  }
}
<<<END>>>