.page-contact {
  --contact-ink-soft: rgba(10, 26, 42, 0.06);
  --contact-shadow: 0 24px 64px rgba(4, 12, 22, 0.42);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
}

.page-contact .contact-hero .breadcrumb {
  margin-bottom: clamp(26px, 4vw, 52px);
}

.page-contact .contact-hero__grid {
  display: grid;
  gap: clamp(30px, 5vw, 64px);
  align-items: start;
}

.page-contact .contact-hero h1 {
  margin: 0 0 clamp(16px, 2.6vw, 24px);
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--mist);
  max-width: 18ch;
}

.page-contact .contact-hero .lede {
  max-width: 34em;
}

.page-contact .contact-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 0;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.4vw, 36px);
}

/* 联络信息板 */
.page-contact .contact-board {
  position: relative;
  isolation: isolate;
  padding: clamp(26px, 4vw, 44px);
  padding-left: clamp(34px, 5vw, 56px);
  color: var(--mist);
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(140, 28, 43, 0.55) 0%, rgba(140, 28, 43, 0) 62%),
    linear-gradient(168deg, var(--trench) 0%, var(--night) 100%);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  box-shadow: var(--contact-shadow);
}

.page-contact .contact-board::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--line);
  clip-path: inherit;
  pointer-events: none;
  z-index: 2;
}

.page-contact .contact-board::after {
  content: "";
  position: absolute;
  left: 14px;
  top: clamp(26px, 4vw, 44px);
  bottom: clamp(26px, 4vw, 44px);
  width: 8px;
  background-image: repeating-linear-gradient(
    to bottom,
    var(--gold) 0 1px,
    transparent 1px 13px
  );
  opacity: 0.45;
  pointer-events: none;
}

.page-contact .contact-board__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-contact .contact-board__hint {
  margin: 8px 0 clamp(18px, 3vw, 26px);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--stone);
}

.page-contact .contact-board__list {
  margin: 0;
  display: grid;
  gap: clamp(14px, 2.2vw, 20px);
}

.page-contact .contact-board__item {
  padding-top: 13px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-board__item dt {
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stone);
}

.page-contact .contact-board__value {
  display: block;
  font-family: var(--mono);
  font-size: clamp(14.5px, 2.1vw, 18px);
  line-height: 1.5;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-contact .contact-board__value--sm {
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(240, 244, 248, 0.86);
}

.page-contact .contact-board__foot {
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(22px, 3vw, 32px);
  background: rgba(10, 26, 42, 0.55);
  border-top: 2px solid var(--deep-red);
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-contact .channel-card:hover {
  border-top-color: var(--gold);
  transform: translateY(-3px);
}

.page-contact .channel-card__tag {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--neon);
}

.page-contact .channel-card h3 {
  margin: 0 0 12px;
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-contact .channel-card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .channel-card__links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 18px;
}

.page-contact .link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--neon);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease);
}

.page-contact .link-arrow::after {
  content: "→";
}

.page-contact .link-arrow:hover,
.page-contact .link-arrow:focus-visible {
  border-bottom-color: var(--neon);
}

/* ---------- 合作方向 ---------- */
.page-contact .direction-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(28px, 4vw, 46px);
}

.page-contact .direction-card {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  background: var(--night);
  color: var(--mist);
  border-left: 3px solid var(--deep-red);
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-contact .direction-card:hover {
  transform: translateY(-3px);
  border-left-color: var(--gold);
}

.page-contact .direction-card__idx {
  display: block;
  margin-bottom: 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .direction-card h3 {
  margin: 0 0 10px;
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 900;
  letter-spacing: -0.01em;
}

.page-contact .direction-card > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .direction-card__extra {
  margin-top: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--neon);
  overflow-wrap: anywhere;
}

/* ---------- 对接流程 ---------- */
.page-contact .flow-layout {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  margin-top: clamp(30px, 4vw, 52px);
}

.page-contact .flow-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  overflow: hidden;
}

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

.page-contact .flow-figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
  background: rgba(10, 26, 42, 0.86);
}

.page-contact .flow-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
}

.page-contact .flow-step {
  position: relative;
  padding-left: 46px;
}

.page-contact .flow-step__idx {
  position: absolute;
  left: 0;
  top: 1px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--night);
  background: var(--gold);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 36px;
  bottom: -28px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(200, 162, 76, 0.05));
}

.page-contact .flow-step:last-child::before {
  display: none;
}

.page-contact .flow-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 900;
  color: var(--mist);
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--stone);
}

/* ---------- 服务范围 ---------- */
.page-contact .region-layout {
  display: grid;
  gap: clamp(28px, 4vw, 50px);
  margin-top: clamp(28px, 4vw, 48px);
  align-items: center;
}

.page-contact .region-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--trench);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  overflow: hidden;
}

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

.page-contact .region-figure figcaption {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 9px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mist);
  background: rgba(10, 26, 42, 0.86);
}

.page-contact .region-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .region-facts__item {
  padding: 14px 0 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .region-facts__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .region-facts__v {
  display: block;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(240, 244, 248, 0.88);
  overflow-wrap: anywhere;
}

/* ---------- 咨询准备 ---------- */
.page-contact .prep-list {
  list-style: none;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 18px 20px;
  background: var(--contact-ink-soft);
  border-left: 2px solid var(--deep-red);
  clip-path: polygon(0 0, calc(100% - var(--cut-sm)) 0, 100% var(--cut-sm), 100% 100%, 0 100%);
}

.page-contact .prep-item__num {
  padding-top: 3px;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--deep-red);
}

.page-contact .prep-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .prep-item__text .mono {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--deep-red);
}

.page-contact .prep-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink);
}

.page-contact .prep-note .link-arrow {
  color: var(--deep-red);
  border-bottom-color: rgba(140, 28, 43, 0.35);
}

.page-contact .prep-note .link-arrow:hover {
  border-bottom-color: var(--deep-red);
}

/* ---------- 收束 ---------- */
.page-contact .contact-close__inner {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  align-items: center;
}

.page-contact .contact-close h2 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--mist);
}

.page-contact .contact-close p {
  margin: 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(240, 244, 248, 0.86);
}

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

.page-contact .contact-close .btn--ghost {
  border-color: rgba(240, 244, 248, 0.5);
  color: var(--mist);
}

.page-contact .contact-close .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--wide {
    grid-column: 1 / -1;
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 22px;
  }
}

@media (min-width: 760px) {
  .page-contact .direction-grid {
    grid-template-columns: 1.15fr 1fr;
    grid-template-areas:
      "a b"
      "a c"
      "d d";
    gap: 16px;
  }

  .page-contact .direction-card--a { grid-area: a; }
  .page-contact .direction-card--b { grid-area: b; }
  .page-contact .direction-card--c { grid-area: c; }
  .page-contact .direction-card--d { grid-area: d; }
}

@media (hover: hover) and (min-width: 760px) {
  .page-contact .direction-card__extra {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition:
      max-height 260ms var(--ease),
      margin-top 260ms var(--ease),
      opacity 200ms var(--ease);
  }

  .page-contact .direction-card:hover .direction-card__extra,
  .page-contact .direction-card:focus-within .direction-card__extra {
    max-height: 180px;
    margin-top: 14px;
    opacity: 1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 5fr 7fr;
  }

  .page-contact .flow-layout {
    grid-template-columns: 4fr 8fr;
    align-items: start;
  }

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

  .page-contact .flow-step {
    padding-left: 0;
    padding-right: 24px;
    padding-top: 50px;
  }

  .page-contact .flow-step:last-child {
    padding-right: 0;
  }

  .page-contact .flow-step::before {
    left: 40px;
    right: 8px;
    top: 16px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, var(--line), rgba(200, 162, 76, 0.06));
  }

  .page-contact .region-layout {
    grid-template-columns: 7fr 5fr;
  }

  .page-contact .contact-close__inner {
    grid-template-columns: 8fr 4fr;
  }

  .page-contact .contact-close__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1100px) {
  .page-contact .contact-hero__grid {
    gap: clamp(48px, 5vw, 80px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .direction-card,
  .page-contact .channel-card {
    transition: none;
  }

  .page-contact .direction-card__extra {
    transition: none;
  }
}