/* ===== 咨询通道 · page-contact ===== */
.page-contact {
  --pc-gap: clamp(32px, 6vw, 76px);
  background: var(--ink-900);
  color: var(--text);
  overflow-x: clip;
}

.page-contact .section {
  padding: var(--pc-gap) 0;
}

/* ---- 首屏 ---- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 3vw, 26px) 0 clamp(40px, 6vw, 72px);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -70px;
  left: -12%;
  right: -12%;
  height: 300px;
  background: repeating-linear-gradient(94deg, transparent 0 58px, rgba(43, 230, 168, .12) 58px 59px);
  transform: rotate(-6deg);
  transform-origin: left center;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(34, 72, 61, .55) 0 1px, transparent 1px 96px);
  opacity: .5;
  pointer-events: none;
}

.page-contact .contact-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  font-size: 13px;
  margin-bottom: 22px;
}

.page-contact .breadcrumb span:last-child {
  color: var(--muted);
}

.page-contact .contact-hero__head {
  display: grid;
  gap: 24px;
  align-items: end;
}

.page-contact .contact-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 3.5rem);
  line-height: 1.03;
  letter-spacing: -.02em;
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 34em;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

/* ---- 三条通道 ---- */
.page-contact .lanes {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .lane {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  transition: transform .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .lane:hover {
  transform: translateY(-2px);
  border-color: var(--path);
}

.page-contact .lane:focus-within {
  border-color: var(--path);
}

.page-contact .lane--focus {
  position: relative;
  border-color: var(--amber);
  background: var(--ink-700);
}

.page-contact .lane--focus::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  height: 3px;
  background: var(--amber);
}

.page-contact .lane--focus:hover {
  border-color: var(--amber-soft);
}

.page-contact .lane__num {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-contact .lane--focus .lane__num {
  color: var(--amber-soft);
}

.page-contact .lane__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  letter-spacing: -.01em;
}

.page-contact .lane__text {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.72;
}

.page-contact .lane__meta {
  margin: 0;
  padding-left: 10px;
  border-left: 2px solid var(--path);
  font-size: 12px;
  line-height: 1.6;
  color: var(--path);
}

.page-contact .lane__link {
  margin-top: auto;
  align-self: flex-start;
  color: var(--path);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease);
}

.page-contact .lane__link:hover,
.page-contact .lane__link:focus-visible {
  border-bottom-color: var(--path);
}

.page-contact .lane .btn {
  margin-top: auto;
  align-self: flex-start;
}

/* ---- 准备清单 ---- */
.page-contact .contact-prep__grid {
  display: grid;
  gap: 24px;
}

.page-contact .contact-prep__intro p {
  margin: 0 0 16px;
  max-width: 30em;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-contact .contact-prep__strip {
  margin: 0;
  color: var(--path);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .checklist__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 2px;
  border-bottom: 1px solid var(--line);
  transition: background .2s var(--ease);
}

.page-contact .checklist__item:hover {
  background: rgba(22, 56, 47, .5);
}

.page-contact .checklist__box {
  appearance: none;
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  border: 1px solid var(--line);
  background: var(--ink-700);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .checklist__box:hover {
  border-color: var(--path);
}

.page-contact .checklist__box:checked {
  background: var(--path);
  border-color: var(--path);
}

.page-contact .checklist__box:checked::after {
  content: "";
  width: 4px;
  height: 9px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: translateY(-1px) rotate(42deg);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-contact .checklist__label {
  display: block;
  cursor: pointer;
}

.page-contact .checklist__label .mono {
  display: block;
  margin-bottom: 3px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--path);
}

.page-contact .checklist__text {
  display: block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

/* ---- 邮件与电话 ---- */
.page-contact .contact-channel__grid {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-contact .contact-channel__figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-contact .contact-channel__body h2 {
  margin: 0 0 18px;
}

.page-contact .reach {
  margin: 0 0 20px;
  border-top: 1px solid var(--line);
}

.page-contact .reach__row {
  display: grid;
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .reach__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
}

.page-contact .reach__value {
  margin: 0;
  font-size: clamp(1.05rem, 2.6vw, 1.6rem);
  letter-spacing: -.01em;
  overflow-wrap: anywhere;
}

.page-contact .reach__value a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--path-deep);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .reach__value a:hover,
.page-contact .reach__value a:focus-visible {
  color: var(--path);
  border-bottom-color: var(--path);
}

.page-contact .reach__note {
  margin: 0;
  max-width: 34em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

/* ---- 合作共建 ---- */
.page-contact .contact-coop__grid {
  display: grid;
  gap: 14px;
}

.page-contact .coop-card {
  padding: 20px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-top: 2px solid var(--path-deep);
}

.page-contact .coop-card__title {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -.01em;
}

.page-contact .coop-card__text {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .contact-coop__note {
  margin: 22px 0 0;
  max-width: 40em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .contact-coop__note a {
  color: var(--path);
  text-decoration: none;
  border-bottom: 1px solid var(--path-deep);
}

.page-contact .contact-coop__note a:hover,
.page-contact .contact-coop__note a:focus-visible {
  border-bottom-color: var(--path);
}

.page-contact .contact-coop__actions {
  margin: 22px 0 0;
}

/* ---- 地址与备案 ---- */
.page-contact .contact-place {
  position: relative;
  overflow: hidden;
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-place::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(43, 230, 168, .16) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(43, 230, 168, .16) 0 1px, transparent 1px 56px);
  -webkit-mask-image: radial-gradient(120% 100% at 12% 0%, #000 0%, transparent 76%);
  mask-image: radial-gradient(120% 100% at 12% 0%, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-contact .contact-place > .shell {
  position: relative;
  z-index: 1;
}

.page-contact .contact-place__grid {
  display: grid;
  gap: 24px;
}

.page-contact .contact-place__intro h2 {
  margin: 0 0 12px;
}

.page-contact .contact-place__text {
  margin: 0;
  max-width: 28em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

.page-contact .place-list {
  margin: 0;
}

.page-contact .place-list dt {
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--path);
}

.page-contact .place-list dd {
  margin: 0 0 20px;
  font-size: 16px;
  line-height: 1.7;
}

.page-contact .place-list div:last-child dd {
  margin-bottom: 0;
}

/* ---- 反馈之后 ---- */
.page-contact .after-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .after-steps__item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .after-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 20px;
  padding: 0 6px;
  margin-bottom: 12px;
  background: var(--amber);
  color: var(--ink-900);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-contact .after-steps__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -.01em;
}

.page-contact .after-steps__text {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.74;
}

/* ---- 收尾 ---- */
.page-contact .contact-final__inner {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--line);
  background: linear-gradient(122deg, var(--ink-800) 0%, var(--ink-700) 100%);
}

.page-contact .contact-final__inner::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 96px;
  height: 3px;
  background: var(--path);
}

.page-contact .contact-final__title {
  margin: 10px 0 12px;
}

.page-contact .contact-final__text {
  margin: 0 0 20px;
  max-width: 34em;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.78;
}

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

/* ---- 响应式 ---- */
@media (min-width: 640px) {
  .page-contact .reach__row {
    grid-template-columns: 120px minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-prep__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__head {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .55fr);
    gap: 40px;
  }

  .page-contact .lanes {
    grid-template-columns: 1fr 1.4fr 1fr;
    gap: 16px;
    align-items: stretch;
  }

  .page-contact .contact-channel__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 52px;
  }

  .page-contact .contact-coop__grid {
    grid-template-columns: 1.25fr 1fr 1fr;
    gap: 16px;
  }

  .page-contact .contact-place__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .after-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .after-steps__item {
    padding: 22px;
    border-bottom: 0;
    border-top: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .page-contact .after-steps__item:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .after-steps__item:last-child {
    padding-right: 0;
  }
}

@media (max-width: 420px) {
  .page-contact .contact-hero::before {
    height: 180px;
    opacity: .7;
  }

  .page-contact .lane__meta {
    font-size: 11px;
  }

  .page-contact .contact-final__actions .btn {
    width: 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .lane,
  .page-contact .checklist__item,
  .page-contact .checklist__box,
  .page-contact .lane__link,
  .page-contact .reach__value a {
    transition-duration: .01ms;
  }

  .page-contact .lane:hover {
    transform: none;
  }
}