.page-contact {
  --ct-pad: clamp(18px, 3vw, 28px);
  --ct-line: var(--edge);
  background: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  position: relative;
  padding: 92px 0 clamp(36px, 5vw, 56px);
  background:
    radial-gradient(120% 90% at 82% 0%, rgba(47, 181, 102, 0.10) 0%, rgba(11, 21, 18, 0) 62%),
    linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  border-bottom: 1px solid var(--ct-line);
  overflow: hidden;
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(180deg, rgba(28, 58, 46, 0.42) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(28, 58, 46, 0.24) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-contact .ct-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-contact .ct-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: 26px;
}

.page-contact h1 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
  margin: 14px 0 18px;
  max-width: 18ch;
}

.page-contact .ct-hero__copy .prose__lead {
  max-width: 56ch;
  color: var(--paper);
  opacity: 0.88;
}

.page-contact .ct-hero__flags {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-flag {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.page-contact .ct-flag b {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-contact .ct-flag span {
  font-size: 0.76rem;
  color: var(--stone);
  letter-spacing: 0.02em;
}

.page-contact .ct-hero__figure {
  margin: 0;
}

.page-contact .ct-hero__figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 600;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.05);
}

/* ---------- 通用章节 ---------- */
.page-contact .ct-section {
  padding: clamp(42px, 7vw, 78px) 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-section--last {
  border-bottom: 0;
}

.page-contact .ct-section .section-head {
  margin-bottom: clamp(24px, 3.5vw, 36px);
}

/* ---------- 三张联系卡 ---------- */
.page-contact .ct-channels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .ct-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--ct-pad);
  background: var(--ink-2);
  border: 2px solid var(--ct-line);
  box-shadow: var(--hard);
  transition: border-color var(--t-fast) linear, box-shadow var(--t-fast) linear;
}

.page-contact .ct-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--green);
}

.page-contact .ct-channel--tel::before { background: var(--clay); }
.page-contact .ct-channel--form::before { background: var(--blue); }

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-within {
  border-color: var(--blue);
  box-shadow: var(--hard-blue);
}

.page-contact .ct-channel__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--stone-2);
  margin: 0;
}

.page-contact .ct-channel__title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--paper);
  margin: 0;
}

.page-contact .ct-channel__value {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
  margin: 0;
  word-break: break-all;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-channel__note {
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--stone);
  margin: 0;
}

.page-contact .ct-channel__list {
  list-style: none;
  margin: auto 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-contact .ct-channel__list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.85rem;
  color: var(--stone-2);
  line-height: 1.6;
}

.page-contact .ct-channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 2px;
  background: var(--green);
}

/* ---------- 表单区 ---------- */
.page-contact .ct-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .ct-form__main {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: var(--ct-pad);
  background: var(--ink-2);
  border: 2px solid var(--ct-line);
  box-shadow: var(--hard);
}

.page-contact .ct-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.page-contact .ct-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone);
}

.page-contact .ct-req {
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  color: var(--clay);
  border: 1px solid var(--clay);
  padding: 1px 6px;
}

.page-contact .ct-input,
.page-contact .ct-area {
  width: 100%;
  box-sizing: border-box;
  background: var(--ink);
  border: 2px solid var(--ct-line);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  padding: 12px 14px;
  transition: border-color var(--t-fast) linear, box-shadow var(--t-fast) linear;
}

.page-contact .ct-area {
  resize: vertical;
  min-height: 128px;
}

.page-contact .ct-input::placeholder,
.page-contact .ct-area::placeholder {
  color: var(--stone-2);
}

.page-contact .ct-input:focus,
.page-contact .ct-area:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: inset 0 0 0 1px rgba(78, 168, 255, 0.35);
}

.page-contact .ct-input:not(:placeholder-shown):invalid {
  border-color: var(--clay);
}

.page-contact .ct-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .ct-chip {
  position: relative;
  display: inline-flex;
}

.page-contact .ct-chip input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  margin: 0;
}

.page-contact .ct-chip span {
  display: inline-block;
  padding: 9px 16px;
  border: 2px solid var(--ct-line);
  color: var(--stone);
  font-size: 0.92rem;
  cursor: pointer;
  transition: border-color var(--t-fast) linear, color var(--t-fast) linear, background var(--t-fast) linear;
}

.page-contact .ct-chip:hover span {
  color: var(--paper);
  border-color: var(--stone-2);
}

.page-contact .ct-chip input:checked + span {
  border-color: var(--blue);
  color: var(--paper);
  background: rgba(78, 168, 255, 0.12);
  box-shadow: 4px 0 0 0 rgba(78, 168, 255, 0.4);
}

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

.page-contact .ct-form__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  padding-top: 18px;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-submit {
  background: var(--blue);
  border-color: var(--blue);
  color: #06131f;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-contact .ct-submit:hover {
  background: #6fb8ff;
  border-color: #6fb8ff;
}

.page-contact .ct-form__main:has(input[required]:invalid) .ct-submit {
  background: transparent;
  border-color: var(--stone-2);
  color: var(--stone-2);
  box-shadow: none;
}

.page-contact .ct-form__hint {
  flex: 1 1 220px;
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--stone-2);
}

.page-contact .ct-form__aside {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: var(--ct-pad);
  background: linear-gradient(180deg, rgba(16, 32, 27, 0.92) 0%, rgba(11, 21, 18, 0.72) 100%);
  border: 1px solid var(--ct-line);
  border-left: 3px solid var(--clay);
}

.page-contact .ct-aside__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-steps {
  list-style: none;
  counter-reset: ct-step;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .ct-steps li {
  counter-increment: ct-step;
  position: relative;
  padding-left: 30px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--stone);
}

.page-contact .ct-steps li::before {
  content: counter(ct-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--blue);
}

.page-contact .ct-steps b {
  color: var(--paper);
  font-weight: 700;
}

.page-contact .ct-aside__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--ct-line);
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--stone-2);
}

/* ---------- 渠道用途对照 ---------- */
.page-contact .ct-route {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-route__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-route__case {
  font-size: 0.96rem;
  line-height: 1.65;
  color: var(--paper);
}

.page-contact .ct-route__to {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--green);
}

.page-contact .ct-route__why {
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--stone-2);
}

/* ---------- 合作类型 ---------- */
.page-contact .ct-coop__figure {
  margin: 0 0 clamp(24px, 3.5vw, 36px);
}

.page-contact .ct-coop__figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 500;
  object-fit: cover;
  filter: saturate(0.78) contrast(1.06);
}

.page-contact .ct-coop {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .ct-coop__item {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: var(--ct-pad);
  background: var(--ink-2);
  border: 1px solid var(--ct-line);
  border-top: 3px solid var(--green);
}

.page-contact .ct-coop__item:nth-child(2) { border-top-color: var(--blue); }
.page-contact .ct-coop__item:nth-child(3) { border-top-color: var(--orange); }
.page-contact .ct-coop__item:nth-child(4) { border-top-color: var(--clay); }

.page-contact .ct-coop__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--stone-2);
}

.page-contact .ct-coop__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.22rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-coop__who {
  margin: 0;
  font-size: 0.82rem;
  color: var(--stone);
  letter-spacing: 0.02em;
}

.page-contact .ct-coop__body {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 回应方式 ---------- */
.page-contact .ct-process {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap);
}

.page-contact .ct-process__col {
  padding: 20px 0 20px 20px;
  border-left: 2px solid var(--ct-line);
}

.page-contact .ct-process__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-contact .ct-process__col p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--stone);
}

.page-contact .ct-prepare {
  margin-top: clamp(28px, 4vw, 44px);
  padding: var(--ct-pad);
  background: var(--ink-2);
  border: 1px solid var(--ct-line);
}

.page-contact .ct-prepare__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--paper);
}

.page-contact .ct-prepare__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px 24px;
}

.page-contact .ct-prepare__list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--stone);
}

.page-contact .ct-prepare__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 9px;
  height: 2px;
  background: var(--green);
}

/* ---------- 地址与备案 ---------- */
.page-contact .ct-facts {
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-facts__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-facts__key {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--stone-2);
}

.page-contact .ct-facts__val {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-facts__val--mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--blue);
}

.page-contact .ct-facts__note {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--stone);
}

.page-contact .ct-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .ct-cta {
    gap: 16px;
  }

  .page-contact .ct-route__row {
    grid-template-columns: minmax(0, 1.8fr) minmax(0, 0.9fr) minmax(0, 1.3fr);
    align-items: baseline;
  }

  .page-contact .ct-prepare__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-facts__row {
    grid-template-columns: 180px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-contact .ct-hero {
    padding-top: 108px;
  }

  .page-contact .ct-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: end;
  }

  .page-contact .ct-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-coop {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .ct-process {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .ct-process__col {
    border-left: 2px solid var(--ct-line);
    border-top: 0;
  }
}

@media (min-width: 960px) {
  .page-contact .ct-form {
    grid-template-columns: minmax(0, 1fr) 340px;
    align-items: start;
  }

  .page-contact .ct-form__main {
    padding: clamp(24px, 3vw, 34px);
  }

  .page-contact .ct-form__aside {
    position: sticky;
    top: calc(var(--head-h) + 24px);
  }

  .page-contact .ct-channel:nth-child(2) {
    transform: translateY(16px);
  }

  .page-contact .ct-coop__item:nth-child(even) {
    transform: translateY(14px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel,
  .page-contact .ct-coop__item,
  .page-contact .ct-chip span,
  .page-contact .ct-input,
  .page-contact .ct-area {
    transition: none;
  }

  .page-contact .ct-channel:nth-child(2),
  .page-contact .ct-coop__item:nth-child(even) {
    transform: none;
  }
}