.page-contact {
  --ct-gap: clamp(14px, 2vw, 22px);
  --ct-pad: clamp(16px, 2.2vw, 26px);
  --ct-line-soft: rgba(30, 42, 69, .75);
  background: var(--bw-blue);
  color: var(--bw-white);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 3vw, 32px) 0 clamp(34px, 5.5vw, 66px);
  border-bottom: 1px solid var(--bw-line);
  background:
    radial-gradient(120% 100% at 92% -12%, rgba(11, 110, 79, .62), rgba(11, 110, 79, 0) 58%),
    radial-gradient(80% 90% at 4% 112%, rgba(255, 107, 53, .16), rgba(255, 107, 53, 0) 62%),
    linear-gradient(165deg, var(--bw-blue), var(--bw-ink) 72%);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--ct-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--ct-line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .75), transparent 76%);
  pointer-events: none;
}

.page-contact .ct-hero > .bw-container {
  position: relative;
  z-index: 1;
}

.page-contact .ct-hero__grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .ct-hero__lead {
  min-width: 0;
}

.page-contact .ct-hero h1 {
  margin: 12px 0 0;
  font-family: var(--bw-font-display);
  font-size: clamp(30px, 6.4vw, 56px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.015em;
}

.page-contact .ct-hero__lede {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--bw-muted);
}

.page-contact .ct-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* 快照面板 */
.page-contact .ct-snapshot {
  position: relative;
  min-width: 0;
  border: 1px solid var(--bw-line);
  background: linear-gradient(180deg, rgba(7, 59, 46, .58), rgba(10, 17, 40, .9));
  padding: var(--ct-pad);
}

.page-contact .ct-snapshot::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 68px;
  height: 3px;
  background: var(--bw-orange);
}

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

.page-contact .ct-snapshot__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 12px;
}

.page-contact .ct-snapshot__num {
  display: block;
  font-family: var(--bw-font-mono);
  font-size: clamp(21px, 3.4vw, 29px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--bw-yellow);
}

.page-contact .ct-snapshot__label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--bw-muted);
}

.page-contact .ct-snapshot__note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--bw-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--bw-dim);
}

/* ---------- 主体双栏 ---------- */
.page-contact .ct-body {
  padding: clamp(30px, 5vw, 62px) 0 clamp(44px, 6vw, 82px);
}

.page-contact .ct-layout {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
}

.page-contact .ct-main {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  min-width: 0;
}

.page-contact .ct-aside {
  display: grid;
  gap: var(--ct-gap);
  min-width: 0;
  align-content: start;
}

.page-contact .ct-aside__sticky {
  min-width: 0;
}

/* ---------- 图片 ---------- */
.page-contact .ct-figure {
  margin: 0;
  position: relative;
  border: 1px solid var(--bw-line);
  background: var(--bw-ink);
  overflow: hidden;
}

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

.page-contact .ct-figure__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--bw-line);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--bw-dim);
  background: rgba(6, 16, 31, .8);
}

/* ---------- 区块标题 ---------- */
.page-contact .ct-sec-head {
  margin-bottom: clamp(16px, 2.2vw, 24px);
}

.page-contact .ct-sec-head h2,
.page-contact .ct-authors h2 {
  margin: 8px 0 0;
  font-size: clamp(21px, 3.1vw, 31px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.01em;
}

.page-contact .ct-sec-head p {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--bw-muted);
}

/* ---------- 合作方向卡片 ---------- */
.page-contact .ct-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--ct-gap);
}

.page-contact .ct-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
  padding: var(--ct-pad);
  border: 1px solid var(--bw-line);
  background: linear-gradient(180deg, rgba(30, 42, 69, .42), rgba(10, 17, 40, .92));
  transition: border-color var(--bw-ease), transform var(--bw-ease);
}

.page-contact .ct-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 72px;
  height: 72px;
  background: linear-gradient(225deg, rgba(11, 110, 79, .6), rgba(11, 110, 79, 0) 72%);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-contact .ct-card:hover {
  border-color: rgba(11, 110, 79, .95);
  transform: translateY(-3px);
}

.page-contact .ct-card__icon {
  width: 34px;
  height: 34px;
  color: var(--bw-cyan);
}

.page-contact .ct-card h3 {
  margin: 0;
  font-size: 18.5px;
  font-weight: 800;
  line-height: 1.3;
}

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

.page-contact .ct-card__desc a,
.page-contact .ct-form__foot a {
  color: var(--bw-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 217, 195, .4);
}

.page-contact .ct-card__desc a:hover,
.page-contact .ct-form__foot a:hover,
.page-contact .ct-card__desc a:focus-visible,
.page-contact .ct-form__foot a:focus-visible {
  color: var(--bw-yellow);
  border-bottom-color: var(--bw-yellow);
}

.page-contact .ct-card__meta {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--bw-dim);
}

.page-contact .ct-card__meta:first-of-type {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px dashed var(--bw-line);
}

.page-contact .ct-tag {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--bw-font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--bw-yellow);
  border: 1px solid rgba(249, 248, 113, .45);
}

.page-contact .ct-tag--alt {
  color: var(--bw-cyan);
  border-color: rgba(43, 217, 195, .45);
}

/* ---------- 流程步骤线 ---------- */
.page-contact .ct-flow {
  list-style: none;
  position: relative;
  margin: 0;
  padding: 0 0 0 30px;
  display: grid;
  gap: 10px;
}

.page-contact .ct-flow::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 22px;
  bottom: 22px;
  width: 2px;
  background: linear-gradient(180deg, var(--bw-orange), var(--bw-green) 60%, rgba(30, 42, 69, .3));
}

.page-contact .ct-step {
  position: relative;
  min-width: 0;
  border: 1px solid var(--bw-line);
  background: rgba(10, 17, 40, .62);
  transition: border-color var(--bw-ease);
}

.page-contact .ct-step::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 18px;
  width: 12px;
  height: 12px;
  box-sizing: border-box;
  border: 2px solid var(--bw-orange);
  background: var(--bw-blue);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .1);
  transition: background var(--bw-ease);
}

.page-contact .ct-step:has(details[open]) {
  border-color: rgba(255, 107, 53, .55);
}

.page-contact .ct-step:has(details[open])::before {
  background: var(--bw-orange);
}

.page-contact summary {
  list-style: none;
  cursor: pointer;
}

.page-contact summary::-webkit-details-marker {
  display: none;
}

.page-contact .ct-step > details > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
}

.page-contact summary:focus-visible {
  outline: 2px solid var(--bw-cyan);
  outline-offset: -2px;
}

.page-contact .ct-step__idx {
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--bw-orange);
}

.page-contact .ct-step__title {
  font-size: 15.5px;
  font-weight: 700;
}

.page-contact .ct-step__sign {
  margin-left: auto;
  font-family: var(--bw-font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--bw-cyan);
  transition: transform var(--bw-ease);
}

.page-contact details[open] .ct-step__sign {
  transform: rotate(45deg);
}

.page-contact .ct-step__body {
  padding: 0 16px 16px;
}

.page-contact .ct-step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--bw-muted);
}

/* ---------- 作者入驻 ---------- */
.page-contact .ct-authors {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--bw-line);
  background: linear-gradient(135deg, rgba(11, 110, 79, .3), rgba(10, 17, 40, .94) 58%);
}

.page-contact .ct-authors__intro p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--bw-muted);
}

.page-contact .ct-authors__intro .bw-btn {
  margin-top: 18px;
}

.page-contact .ct-authors__list {
  margin: 0;
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-contact .ct-authors__list > div {
  padding-left: 12px;
  border-left: 2px solid var(--bw-orange);
}

.page-contact .ct-authors__list dt {
  font-family: var(--bw-font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--bw-yellow);
}

.page-contact .ct-authors__list dd {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--bw-muted);
}

/* ---------- 常见问题 ---------- */
.page-contact .ct-faq {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--bw-line);
}

.page-contact .ct-faq details {
  border-bottom: 1px solid var(--bw-line);
}

.page-contact .ct-faq summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .ct-faq summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--bw-font-mono);
  font-size: 17px;
  color: var(--bw-cyan);
}

.page-contact .ct-faq details[open] summary::after {
  content: "–";
  color: var(--bw-orange);
}

.page-contact .ct-faq p {
  margin: 0;
  padding: 0 0 16px;
  max-width: 64ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--bw-muted);
}

/* ---------- 联系卡 ---------- */
.page-contact .ct-contact {
  position: relative;
  overflow: hidden;
  padding: var(--ct-pad);
  border: 1px solid var(--bw-line);
  background: linear-gradient(180deg, #0c1a33, var(--bw-blue));
}

.page-contact .ct-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--bw-yellow), var(--bw-orange), rgba(255, 107, 53, 0));
}

.page-contact .ct-contact__title {
  margin: 8px 0 4px;
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 800;
  line-height: 1.3;
}

.page-contact .ct-contact__row {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--bw-line);
}

.page-contact .ct-contact__row:last-of-type {
  border-bottom: 0;
}

.page-contact .ct-contact__key {
  font-family: var(--bw-font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--bw-yellow);
}

.page-contact .ct-contact__val {
  font-family: var(--bw-font-mono);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--bw-white);
  text-decoration: none;
  word-break: break-all;
}

.page-contact a.ct-contact__val {
  border-bottom: 1px solid transparent;
}

.page-contact a.ct-contact__val:hover,
.page-contact a.ct-contact__val:focus-visible {
  color: var(--bw-yellow);
  border-bottom-color: var(--bw-yellow);
}

.page-contact .ct-contact__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--bw-line);
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--bw-dim);
}

.page-contact .ct-figure--aside {
  border-color: rgba(30, 42, 69, .9);
}

/* ---------- 表单 ---------- */
.page-contact .ct-form {
  padding: var(--ct-pad);
  border: 1px solid var(--bw-line);
  background: rgba(6, 16, 31, .86);
}

.page-contact .ct-form__title {
  margin: 8px 0 0;
  font-size: clamp(19px, 2.6vw, 23px);
  font-weight: 800;
  line-height: 1.3;
}

.page-contact .ct-form__sub {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--bw-muted);
}

.page-contact .ct-form__grid {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.page-contact .ct-field {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.page-contact .ct-field__label {
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--bw-muted);
}

.page-contact .ct-field__label .bw-mono {
  margin-right: 5px;
  color: var(--bw-orange);
}

.page-contact .ct-input {
  width: 100%;
  box-sizing: border-box;
  padding: 11px 12px;
  border: 1px solid var(--bw-line);
  border-radius: 0;
  background-color: rgba(245, 247, 250, .04);
  color: var(--bw-white);
  font-family: var(--bw-font-body);
  font-size: 15px;
  line-height: 1.5;
  transition: border-color var(--bw-ease), box-shadow var(--bw-ease), background-color var(--bw-ease);
}

.page-contact .ct-input::placeholder {
  color: rgba(245, 247, 250, .3);
}

.page-contact .ct-input:focus {
  outline: none;
  border-color: var(--bw-cyan);
  background-color: rgba(43, 217, 195, .06);
  box-shadow: 0 0 0 3px rgba(43, 217, 195, .12);
}

.page-contact textarea.ct-input {
  min-height: 96px;
  resize: vertical;
}

.page-contact select.ct-input {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 34px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--bw-cyan) 50%),
    linear-gradient(135deg, var(--bw-cyan) 50%, transparent 50%);
  background-position: calc(100% - 18px) 55%, calc(100% - 13px) 55%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.page-contact select.ct-input option {
  background: var(--bw-blue);
  color: var(--bw-white);
}

.page-contact .ct-field__err {
  display: none;
  font-size: 12px;
  line-height: 1.6;
  color: var(--bw-orange);
}

.page-contact .ct-field:has(.ct-input:user-invalid) .ct-field__err {
  display: block;
}

.page-contact .ct-field:has(.ct-input:user-invalid) .ct-input {
  border-color: rgba(255, 107, 53, .72);
}

.page-contact .ct-form__submit {
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 18px;
  text-align: center;
}

.page-contact .ct-form__foot {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--bw-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .ct-cards {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .ct-form__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-contact .ct-field--full {
    grid-column: 1 / -1;
  }
}

@media (min-width: 760px) {
  .page-contact .ct-authors {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.12fr);
    align-items: start;
  }
}

@media (min-width: 920px) {
  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-contact .ct-layout {
    grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .ct-aside__sticky {
    position: sticky;
    top: 88px;
    z-index: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-card,
  .page-contact .ct-step,
  .page-contact .ct-step__sign,
  .page-contact .ct-input {
    transition: none;
  }

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