.page-contact {
  background: var(--arena-900);
  color: var(--on-dark);
  overflow-x: hidden;
}

.page-contact .c-head {
  max-width: 62ch;
}

.page-contact .c-head__desc {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--on-light-muted);
}

.page-contact .c-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5vw, 40px);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: inherit;
}

.page-contact .media-frame {
  margin: 0;
}

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

/* ---------- 首屏联络台 ---------- */
.page-contact .c-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 44px) clamp(44px, 7vw, 88px);
  background: var(--arena-900);
  isolation: isolate;
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  top: -8%;
  right: -10%;
  width: 58%;
  height: 74%;
  background: var(--command-800);
  clip-path: polygon(26% 0, 100% 0, 100% 100%, 0 100%);
  z-index: -1;
  pointer-events: none;
}

.page-contact .c-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--orange-500) 0 22%, var(--line-soft) 22% 100%);
  pointer-events: none;
}

.page-contact .c-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .c-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-contact .c-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.5vw, 64px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-contact .c-hero__intro {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--on-dark-dim);
}

.page-contact .c-quick {
  margin-top: clamp(24px, 4vw, 38px);
  padding: clamp(16px, 2.4vw, 24px);
  background: rgba(18, 44, 71, 0.78);
  border-left: 3px solid var(--orange-500);
  border-radius: var(--radius);
}

.page-contact .c-quick__title {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--on-dark);
}

.page-contact .c-quick__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-muted);
}

.page-contact .c-quick__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 14px;
}

.page-contact .c-quick__links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color var(--dur) var(--ease);
}

.page-contact .c-quick__links a:hover,
.page-contact .c-quick__links a:focus-visible {
  border-bottom-color: var(--cyan-400);
}

.page-contact .c-hero__figure {
  border-radius: var(--radius);
}

.page-contact .c-hero__status {
  margin-top: 16px;
}

/* ---------- 三条通道 ---------- */
.page-contact .c-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .c-channel {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--paper-50);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
}

.page-contact .c-channel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46px;
  height: 3px;
  background: var(--moss-500);
}

.page-contact .c-channel:nth-child(2)::before {
  background: var(--clay-500);
}

.page-contact .c-channel:nth-child(3)::before {
  background: var(--rock-600);
}

.page-contact .c-channel--lead {
  background: var(--command-800);
  border-color: var(--line-strong);
  color: var(--on-dark);
}

.page-contact .c-channel--lead::before {
  background: var(--cyan-400);
  width: 64px;
}

.page-contact .c-channel__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--on-light-muted);
}

.page-contact .c-channel--lead .c-channel__num {
  color: var(--cyan-400);
}

.page-contact .c-channel__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .c-channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.9vw, 19px);
  font-weight: 700;
  line-height: 1.45;
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

.page-contact .c-channel__value--addr {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.8vw, 18px);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-contact .c-channel__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--on-light-muted);
}

.page-contact .c-channel--lead .c-channel__desc {
  color: var(--on-dark-dim);
}

.page-contact .c-channel__meta {
  margin: auto 0 0;
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--moss-500);
}

.page-contact .c-channel--lead .c-channel__meta {
  color: var(--cyan-400);
}

.page-contact .c-channel:nth-child(2) .c-channel__meta {
  color: var(--clay-500);
}

.page-contact .c-channel__action {
  align-self: flex-start;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 3px;
  transition: opacity var(--dur) var(--ease);
}

.page-contact .c-channel--lead .c-channel__action {
  color: var(--cyan-400);
}

.page-contact .c-channel__action:hover,
.page-contact .c-channel__action:focus-visible {
  opacity: 0.72;
}

/* ---------- 反馈路径 ---------- */
.page-contact .c-feedback {
  position: relative;
  padding-block: clamp(44px, 6vw, 82px);
  background: var(--command-800);
  color: var(--on-dark);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .c-feedback .c-head__desc {
  color: var(--on-dark-dim);
}

.page-contact .c-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-contact .c-rail__step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 20px 20px;
  background: rgba(11, 30, 51, 0.66);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
}

.page-contact .c-rail__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 26px;
  height: 2px;
  background: var(--orange-500);
}

.page-contact .c-rail__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange-500);
}

.page-contact .c-rail__title {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--on-dark);
}

.page-contact .c-rail__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--on-dark-muted);
}

.page-contact .c-feedback__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 34px);
}

.page-contact .c-hours {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(32px, 4.5vw, 52px);
  padding-top: clamp(24px, 3vw, 32px);
  border-top: 1px solid var(--line-soft);
}

.page-contact .c-hours__title {
  margin: 12px 0 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--on-dark);
}

.page-contact .c-hours__text {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--on-dark-muted);
}

/* ---------- 合作共建 ---------- */
.page-contact .c-collab__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .c-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}

.page-contact .c-bring {
  border-left: 2px solid var(--orange-500);
  padding-left: 18px;
}

.page-contact .c-bring__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--on-light);
}

.page-contact .c-bring__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .c-bring__list li {
  display: grid;
  grid-template-columns: 16px 1fr;
  gap: 6px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--on-light-muted);
}

.page-contact .c-bring__list li::before {
  content: "—";
  color: var(--clay-500);
  font-family: var(--font-mono);
}

.page-contact .c-bring__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--on-light-muted);
}

.page-contact .c-bring__action {
  margin-top: 16px;
  color: var(--on-light);
}

/* ---------- 地址与邮寄 ---------- */
.page-contact .c-where {
  position: relative;
  padding-block: clamp(44px, 6vw, 84px);
  background: var(--arena-900);
  color: var(--on-dark);
}

.page-contact .c-where__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-contact .c-where__note {
  margin-top: clamp(22px, 3vw, 30px);
  border-left: 2px solid var(--moss-500);
  padding-left: 18px;
}

.page-contact .c-where__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--silver-400);
}

.page-contact .c-where__addr {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--on-dark);
}

.page-contact .c-where__text {
  margin: 14px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--on-dark-muted);
}

.page-contact .c-where__text--tight {
  margin-top: 18px;
  padding-left: 18px;
  border-left: 2px solid var(--line-strong);
  color: var(--on-dark-dim);
}

.page-contact .c-where__figure {
  border-radius: var(--radius);
}

/* ---------- 其他入口 ---------- */
.page-contact .c-more__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  margin-top: clamp(24px, 3.5vw, 40px);
}

.page-contact .c-more__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--paper-50);
  border: 1px solid var(--line-light);
  border-radius: var(--radius);
}

.page-contact .c-more__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--on-light);
}

.page-contact .c-more__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--on-light-muted);
}

.page-contact .c-more__link {
  align-self: flex-start;
  margin-top: auto;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--on-light);
  text-decoration: none;
  border-bottom: 1px solid var(--clay-500);
  transition: color var(--dur) var(--ease);
}

.page-contact .c-more__link:hover,
.page-contact .c-more__link:focus-visible {
  color: var(--clay-500);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .c-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .c-hours {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-contact .c-channels {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.95fr) minmax(0, 0.9fr);
    align-items: stretch;
  }

  .page-contact .c-collab__grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-contact .c-bring {
    padding-left: 24px;
  }

  .page-contact .c-where__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-quick__links a,
  .page-contact .c-channel__action,
  .page-contact .c-more__link {
    transition: none;
  }
}