/* ===== 联系我们 · page-contact ===== */

.page-contact {
  --pc-panel: linear-gradient(180deg, rgba(13, 23, 48, .94), rgba(6, 10, 22, .96));
  --pc-hairline: 1px solid var(--line);
  display: block;
  padding-bottom: 88px;
  color: var(--body-text);
}

.page-contact h2 {
  font-size: clamp(1.35rem, 3.4vw, 1.9rem);
  line-height: 1.3;
  letter-spacing: -.015em;
  font-weight: 700;
  color: var(--silver);
}

.page-contact h3 {
  font-size: 1.16rem;
  line-height: 1.4;
  letter-spacing: -.01em;
  font-weight: 700;
  color: var(--silver);
}

.page-contact .mono {
  font-family: var(--font-mono);
  font-size: .94em;
  letter-spacing: .02em;
  color: var(--silver);
}

/* --- 首屏 --- */
.page-contact__hero {
  position: relative;
  padding: 118px 0 24px;
  overflow: hidden;
  border-bottom: var(--pc-hairline);
  background:
    radial-gradient(880px 420px at 82% -14%, rgba(86, 200, 222, .17), transparent 64%),
    radial-gradient(620px 360px at 6% 8%, rgba(126, 157, 255, .12), transparent 68%),
    linear-gradient(180deg, #0D1730 0%, #060A16 100%);
}

.page-contact__hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .38;
  background-image: radial-gradient(rgba(233, 238, 247, .16) 1px, transparent 1px);
  background-size: 36px 36px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 76%);
}

.page-contact__hero-inner {
  position: relative;
  z-index: 1;
}

.page-contact__hero h1 {
  margin: 12px 0 18px;
  font-size: clamp(2rem, 5.6vw, 3.6rem);
  line-height: 1.12;
  letter-spacing: -.025em;
  font-weight: 800;
  color: var(--silver);
  max-width: 20ch;
}

.page-contact__lede {
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--body-text);
}

.page-contact__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact__hero-figure {
  position: relative;
  margin: 44px 0 0;
  border: var(--pc-hairline);
  background: var(--ink-2);
  overflow: hidden;
}

.page-contact__hero-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(170px, 21vw, 300px);
  object-fit: cover;
  object-position: center 60%;
  opacity: .9;
}

.page-contact__hero-figure figcaption {
  position: absolute;
  left: 16px;
  bottom: 16px;
}

.region-label {
  display: inline-block;
  padding: 5px 11px;
  border: var(--pc-hairline);
  background: rgba(6, 10, 22, .72);
  color: var(--rock);
  font-size: .7rem;
  letter-spacing: .2em;
  line-height: 1.4;
  white-space: nowrap;
}

/* --- 双通道 --- */
.page-contact__channels {
  padding: 68px 0 0;
}

.channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-top: 30px;
}

.channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px 22px 26px;
  border: var(--pc-hairline);
  background: var(--pc-panel);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--star));
}

.channel-card--human::before {
  background: linear-gradient(90deg, var(--amber), var(--clay));
}

.channel-card:hover,
.channel-card:focus-within {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.channel-card--human:hover,
.channel-card--human:focus-within {
  border-color: var(--amber);
}

.channel-card h3 {
  margin: 14px 0 10px;
  font-size: 1.24rem;
}

.channel-card__desc {
  color: var(--body-text);
  font-size: .94rem;
  line-height: 1.8;
}

.channel-card__facts {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 20px 0 0;
  padding: 20px 0 0;
  border-top: var(--pc-hairline);
}

.channel-card__facts li {
  position: relative;
  padding-left: 15px;
  font-size: .87rem;
  line-height: 1.75;
  color: var(--mute);
}

.channel-card__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .64em;
  width: 5px;
  height: 5px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.channel-card--human .channel-card__facts li::before {
  background: var(--amber);
}

.channel-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: auto;
  padding-top: 22px;
}

.channel-card__link {
  display: inline-block;
  font-size: .88rem;
  color: var(--cyan);
  text-decoration: none;
  padding-bottom: 2px;
  background-image: linear-gradient(currentColor, currentColor);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 1px;
  transition: background-size var(--dur) var(--ease);
}

.channel-card--human .channel-card__link {
  color: var(--amber);
}

.channel-card__link:hover,
.channel-card__link:focus-visible {
  background-size: 100% 1px;
}

/* --- 联系方式字段区 --- */
.page-contact__reach {
  padding: 76px 0 0;
}

.contact-rows {
  margin: 30px 0 0;
  border-top: var(--pc-hairline);
}

.contact-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  padding: 24px 0;
  border-bottom: var(--pc-hairline);
}

.contact-row dt {
  font-size: .74rem;
  letter-spacing: .16em;
  color: var(--rock);
  line-height: 1.8;
}

.contact-row__detail {
  margin: 0;
  min-width: 0;
}

.contact-row__line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 14px;
}

.contact-row__value {
  font-family: var(--font-mono);
  font-size: clamp(.98rem, 2.6vw, 1.14rem);
  letter-spacing: .02em;
  color: var(--silver);
  word-break: break-word;
}

.contact-row__value--text {
  font-family: var(--font-sans);
  letter-spacing: .01em;
}

.contact-row .copy-btn {
  flex: none;
}

.contact-row__note {
  margin-top: 12px;
  max-width: 66ch;
  font-size: .88rem;
  line-height: 1.8;
  color: var(--mute);
}

.contact-row__tags {
  margin-top: 12px;
}

/* --- 反馈清单 --- */
.page-contact__kit {
  padding: 76px 0 0;
}

.kit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}

.checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border: var(--pc-hairline);
  background: linear-gradient(180deg, rgba(244, 240, 230, .05), rgba(244, 240, 230, .012));
}

.checklist__item + .checklist__item {
  border-top: var(--pc-hairline);
}

.checklist__item label {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 19px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease);
}

.checklist__item label:hover {
  background-color: rgba(86, 200, 222, .07);
}

.checklist__item input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.checklist__box {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 3px;
  border: 1px solid var(--rock);
  background: rgba(6, 10, 22, .6);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.checklist__box::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--cyan);
  transform: scale(0);
  transition: transform var(--dur) var(--ease);
}

.checklist__item input:checked + .checklist__box {
  border-color: var(--cyan);
  background: rgba(86, 200, 222, .14);
}

.checklist__item input:checked + .checklist__box::after {
  transform: scale(1);
}

.checklist__item input:focus-visible + .checklist__box {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.checklist__body {
  display: grid;
  gap: 5px;
  min-width: 0;
}

.checklist__body strong {
  font-size: .97rem;
  font-weight: 700;
  color: var(--silver);
}

.checklist__body > span {
  font-size: .87rem;
  line-height: 1.78;
  color: var(--mute);
}

.kit-figure {
  margin: 0;
  padding: 14px;
  border: var(--pc-hairline);
  background: var(--ink-2);
}

.kit-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.kit-figure figcaption {
  margin-top: 12px;
  font-size: .79rem;
  line-height: 1.72;
  letter-spacing: .03em;
  color: var(--rock);
}

.page-contact__kit-note {
  margin-top: 26px;
  padding-left: 14px;
  border-left: 2px solid var(--line);
  font-size: .88rem;
  line-height: 1.8;
  color: var(--mute);
  max-width: 78ch;
}

/* --- 合作洽谈 --- */
.page-contact__partners {
  padding: 76px 0 0;
}

.partner-panel {
  display: grid;
  grid-template-columns: 1fr;
  border: var(--pc-hairline);
  overflow: hidden;
  background: linear-gradient(140deg, rgba(13, 23, 48, .96) 0%, rgba(6, 10, 22, .99) 62%);
}

.partner-panel__copy {
  padding: 30px 22px 32px;
}

.partner-panel__copy h2 {
  margin: 12px 0 14px;
}

.partner-panel__copy p {
  max-width: 62ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--body-text);
}

.partner-panel__copy .btn {
  margin-top: 22px;
}

.partner-panel__aside {
  padding: 26px 22px 30px;
  border-top: var(--pc-hairline);
  background: rgba(244, 240, 230, .035);
}

.partner-panel__aside h3 {
  font-size: .74rem;
  letter-spacing: .16em;
  font-weight: 700;
  color: var(--rock);
  text-transform: none;
}

.partner-list {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 16px 0 0;
  padding: 0;
}

.partner-list li {
  position: relative;
  padding-left: 16px;
  font-size: .89rem;
  line-height: 1.75;
  color: var(--body-text);
}

.partner-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 1px;
  background: var(--moss);
}

/* --- 相关入口 --- */
.page-contact__trail {
  padding: 64px 0 0;
}

.page-contact__trail-text {
  max-width: 68ch;
  font-size: .9rem;
  line-height: 1.8;
  color: var(--mute);
}

.trail-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 18px;
  border-top: var(--pc-hairline);
}

.trail-link {
  display: block;
  padding: 15px 14px 15px 0;
  border-bottom: var(--pc-hairline);
  color: var(--silver);
  font-size: .9rem;
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.trail-link:hover,
.trail-link:focus-visible {
  color: var(--cyan);
  padding-left: 8px;
  border-bottom-color: var(--cyan);
}

/* --- 窄屏以上的排布 --- */
@media (min-width: 640px) {
  .page-contact__hero {
    padding-top: 132px;
  }

  .contact-row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 26px;
    align-items: start;
    padding: 26px 0;
  }

  .contact-row dt {
    padding-top: 5px;
  }

  .trail-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-contact {
    padding-bottom: 112px;
  }

  .page-contact__hero {
    padding: 150px 0 30px;
  }

  .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    margin-top: 34px;
  }

  .channel-card {
    padding: 32px 28px 28px;
  }

  .channel-card--self {
    margin-top: 0;
  }

  .channel-card--human {
    margin-top: 16px;
  }

  .kit-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .72fr);
    gap: 40px;
    align-items: start;
  }

  .partner-panel {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
  }

  .partner-panel__copy {
    padding: 42px 40px 44px;
  }

  .partner-panel__aside {
    padding: 42px 34px 44px;
    border-top: 0;
    border-left: var(--pc-hairline);
  }

  .trail-links {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (min-width: 1200px) {
  .page-contact__hero h1 {
    max-width: 24ch;
  }
}
<<<END>>>