.page-contact {
  --ct-gap: clamp(16px, 2.6vw, 24px);
  --ct-cut: 34px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--fd-ink);
}
.page-contact .ct-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-contact .ct-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}
.page-contact .ct-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(102deg, rgba(11, 27, 51, 0.96) 0%, rgba(11, 27, 51, 0.86) 44%, rgba(10, 108, 255, 0.55) 100%);
}
.page-contact .ct-hero__inner {
  position: relative;
  z-index: 1;
  padding-block: clamp(56px, 10vw, 112px) clamp(44px, 7vw, 80px);
}
.page-contact .ct-hero .fd-crumb {
  color: rgba(230, 238, 255, 0.72);
  font-size: 13px;
}
.page-contact .ct-hero .fd-crumb a {
  color: var(--fd-mist);
  text-decoration: none;
}
.page-contact .ct-hero .fd-crumb a:hover {
  text-decoration: underline;
}
.page-contact .ct-hero__kicker {
  margin-top: 24px;
  color: var(--fd-teal);
}
.page-contact .ct-hero__title {
  margin: 12px 0 18px;
  color: #ffffff;
  font-size: clamp(30px, 6.2vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.02em;
}
.page-contact .ct-hero__lead {
  max-width: 46ch;
  color: #d7e2f5;
  font-size: clamp(15px, 2.3vw, 18px);
  line-height: 1.75;
}
.page-contact .ct-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .ct-hero__facts li {
  position: relative;
  padding-left: 16px;
  color: #bfd2ee;
  font-size: 13.5px;
  line-height: 1.6;
}
.page-contact .ct-hero__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 7px;
  height: 7px;
  background: var(--fd-teal);
  transform: rotate(45deg);
}

/* ---------- 三类入口 ---------- */
.page-contact .ct-channels__head {
  max-width: 54ch;
  margin-bottom: clamp(24px, 4vw, 40px);
}
.page-contact .ct-channels__lead {
  margin-top: 12px;
}
.page-contact .ct-channels__grid {
  display: grid;
  gap: var(--ct-gap);
}
.page-contact .ct-chan {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 26px;
  background: #ffffff;
  border-left: 4px solid var(--fd-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}
.page-contact .ct-chan--teal {
  background: var(--fd-mint);
  border-left-color: var(--fd-teal);
}
.page-contact .ct-chan--ink {
  background: var(--fd-ink);
  border-left-color: var(--fd-orange);
}
.page-contact .ct-chan--plain {
  background: var(--fd-paper);
  border-left-color: var(--fd-blue);
}
.page-contact .ct-chan__num {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--fd-blue);
}
.page-contact .ct-chan--ink .ct-chan__num {
  color: var(--fd-teal);
}
.page-contact .ct-chan__title {
  margin: 0;
  color: var(--fd-ink);
  font-size: clamp(17px, 2.6vw, 20px);
}
.page-contact .ct-chan p {
  margin: 0;
  color: var(--fd-gray);
  font-size: 15px;
  line-height: 1.7;
}
.page-contact .ct-chan--ink .ct-chan__title {
  color: #ffffff;
}
.page-contact .ct-chan--ink p {
  color: #c9d8ee;
}
.page-contact .ct-chan__link {
  margin-top: auto;
  align-self: flex-start;
  padding-bottom: 2px;
  color: var(--fd-blue-deep);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--fd-orange);
}
.page-contact .ct-chan__link:hover {
  color: var(--fd-ink);
}
.page-contact .ct-chan--ink .ct-chan__link {
  color: var(--fd-teal);
  border-bottom-color: var(--fd-teal);
}
.page-contact .ct-chan--ink .ct-chan__link:hover {
  color: #ffffff;
}

/* ---------- 客服支持 ---------- */
.page-contact .ct-support__grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}
.page-contact .ct-line {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--fd-line);
}
.page-contact .ct-line__label {
  margin: 0 0 8px;
  color: var(--fd-gray);
  font-size: 12.5px;
  letter-spacing: 0.14em;
}
.page-contact .ct-line__mail {
  margin: 0;
  color: var(--fd-ink);
  font-size: clamp(18px, 4.2vw, 30px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.35;
  word-break: break-word;
}
.page-contact .ct-line__tel {
  margin: 0;
  color: var(--fd-blue-deep);
  font-family: var(--fd-font-mono);
  font-size: clamp(28px, 6.4vw, 44px);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
}
.page-contact .ct-support__text {
  max-width: 46ch;
  margin: 24px 0 0;
  color: var(--fd-gray);
}
.page-contact .ct-support__btn {
  margin-top: 18px;
}
.page-contact .ct-support__figure {
  margin: 0;
}
.page-contact .ct-support__figure .fd-figure__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  max-width: 100%;
  background: var(--fd-mist);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}
.page-contact .ct-support__figure .fd-figure__cap {
  margin-top: 12px;
  color: var(--fd-gray);
  font-size: 13px;
  line-height: 1.6;
}

/* ---------- 咨询准备清单 ---------- */
.page-contact .ct-prep__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}
.page-contact .ct-prep__aside p {
  max-width: 40ch;
  color: var(--fd-gray);
  line-height: 1.75;
}
.page-contact .ct-prep__aside .fd-note {
  margin-top: 16px;
  color: var(--fd-blue-deep);
}
.page-contact .ct-form {
  position: relative;
  padding: clamp(22px, 3.4vw, 36px);
  background: #ffffff;
  border: 1px solid var(--fd-line);
  clip-path: polygon(var(--ct-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--ct-cut));
}
.page-contact .ct-form::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--fd-blue), var(--fd-teal) 58%, var(--fd-orange));
}
.page-contact .ct-form__step {
  margin: 6px 0 8px;
  color: var(--fd-blue);
  font-size: 12px;
  letter-spacing: 0.16em;
}
.page-contact .ct-form__head .fd-h3 {
  margin: 0;
  color: var(--fd-ink);
}
.page-contact .ct-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 16px;
}
.page-contact .ct-switch .fd-chip {
  cursor: pointer;
  font-size: 13.5px;
}
.page-contact #ct-ch-product:checked ~ .ct-switch [for="ct-ch-product"],
.page-contact #ct-ch-coop:checked ~ .ct-switch [for="ct-ch-coop"],
.page-contact #ct-ch-general:checked ~ .ct-switch [for="ct-ch-general"] {
  background: var(--fd-ink);
  border-color: var(--fd-ink);
  color: #ffffff;
}
.page-contact .ct-hint {
  display: none;
  margin: 0 0 20px;
  padding: 14px 16px;
  background: var(--fd-mist);
  border-left: 3px solid var(--fd-teal);
  color: var(--fd-ink);
  font-size: 14.5px;
  line-height: 1.7;
}
.page-contact #ct-ch-product:checked ~ .ct-hints .ct-hint--product,
.page-contact #ct-ch-coop:checked ~ .ct-hints .ct-hint--coop,
.page-contact #ct-ch-general:checked ~ .ct-hints .ct-hint--general {
  display: block;
}
.page-contact .ct-check {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-contact .ct-check li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
}
.page-contact .ct-check input {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  background: #ffffff;
  border: 2px solid var(--fd-line);
  border-radius: 3px;
  cursor: pointer;
  flex: none;
}
.page-contact .ct-check input:checked {
  background: var(--fd-teal);
  border-color: var(--fd-teal);
}
.page-contact .ct-check input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border: 2px solid var(--fd-ink);
  border-top: 0;
  border-left: 0;
  transform: rotate(42deg);
}
.page-contact .ct-check label {
  cursor: pointer;
  color: var(--fd-gray);
  font-size: 14.5px;
  line-height: 1.6;
}
.page-contact .ct-check label b {
  display: block;
  color: var(--fd-ink);
  font-weight: 700;
}
.page-contact .ct-check label span {
  display: block;
  font-size: 13.5px;
}
.page-contact .ct-check input:checked + label b {
  color: var(--fd-blue-deep);
}
.page-contact .ct-form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 合作方向 ---------- */
.page-contact .ct-collabwrap__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}
.page-contact .ct-collabwrap__intro p {
  max-width: 42ch;
  color: var(--fd-gray);
  line-height: 1.75;
}
.page-contact .ct-collabwrap__intro .fd-note {
  margin-top: 16px;
  color: var(--fd-blue-deep);
}
.page-contact .ct-item {
  border-top: 1px solid var(--fd-line);
}
.page-contact .ct-item:last-child {
  border-bottom: 1px solid var(--fd-line);
}
.page-contact .ct-item summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 8px;
  color: var(--fd-ink);
  font-size: clamp(16px, 2.4vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  list-style: none;
  cursor: pointer;
}
.page-contact .ct-item summary::-webkit-details-marker {
  display: none;
}
.page-contact .ct-item summary:hover {
  background: var(--fd-mist);
}
.page-contact .ct-item summary::after {
  content: "+";
  margin-left: auto;
  color: var(--fd-blue);
  font-family: var(--fd-font-mono);
  font-size: 20px;
  line-height: 1;
}
.page-contact .ct-item[open] summary {
  color: var(--fd-blue-deep);
}
.page-contact .ct-item[open] summary::after {
  content: "–";
}
.page-contact .ct-item__num {
  font-family: var(--fd-font-mono);
  font-size: 13px;
  color: var(--fd-teal);
}
.page-contact .ct-item p {
  margin: 0;
  padding: 0 8px 20px;
  color: var(--fd-gray);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 通信地址 ---------- */
.page-contact .ct-visit {
  background: linear-gradient(180deg, var(--fd-paper) 0%, var(--fd-mist) 100%);
}
.page-contact .ct-visit__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: center;
}
.page-contact .ct-visit__text p {
  max-width: 44ch;
  color: var(--fd-gray);
  line-height: 1.75;
}
.page-contact .ct-visit__addr {
  margin: 20px 0;
  padding-left: 16px;
  border-left: 4px solid var(--fd-orange);
  color: var(--fd-ink);
  font-size: clamp(18px, 3.4vw, 26px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.5;
}
.page-contact .ct-visit__text .fd-note {
  margin-top: 14px;
  color: var(--fd-blue-deep);
}
.page-contact .ct-visit__art {
  margin: 0;
}
.page-contact .ct-skyline {
  display: block;
  width: 100%;
  height: auto;
}
.page-contact .ct-skyline__lines path {
  fill: none;
  stroke: var(--fd-blue);
  stroke-width: 2;
  opacity: 0.55;
}
.page-contact .ct-skyline__base {
  fill: none;
  stroke: var(--fd-ink);
  stroke-width: 2;
  opacity: 0.4;
}
.page-contact .ct-skyline__river {
  fill: none;
  stroke: var(--fd-blue);
  stroke-width: 2;
  opacity: 0.35;
}
.page-contact .ct-skyline__river--2 {
  opacity: 0.2;
}
.page-contact .ct-skyline__wind {
  fill: none;
  stroke: var(--fd-orange);
  stroke-width: 2.5;
  opacity: 0.85;
}
.page-contact .ct-skyline__dot {
  fill: var(--fd-teal);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-contact .ct-channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .ct-support__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
  .page-contact .ct-prep__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    align-items: start;
  }
  .page-contact .ct-collabwrap__grid {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }
  .page-contact .ct-visit__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  }
  .page-contact .ct-visit__text {
    padding-bottom: 16px;
  }
}

@media (max-width: 420px) {
  .page-contact .ct-form {
    padding: 20px 16px 24px;
  }
  .page-contact .ct-form__actions .fd-btn {
    width: 100%;
    justify-content: center;
  }
  .page-contact .ct-item summary {
    gap: 10px;
    padding: 16px 4px;
  }
}
<<<END>>>