.page-contact {
  --pc-line: var(--grid);
  --pc-panel: rgba(17, 21, 22, 0.9);
  --pc-soft: rgba(234, 247, 243, 0.86);
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-contact a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* ---------------- 首屏 ---------------- */

.page-contact .contact-hero {
  position: relative;
  border-bottom: 2px solid var(--pc-line);
  padding: 0 0 clamp(34px, 6vw, 70px);
  overflow: hidden;
}

.page-contact .contact-hero-art {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .contact-hero-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 32%;
  opacity: 0.32;
}

.page-contact .contact-hero-art::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
      rgba(10, 31, 26, 0.6) 0%,
      rgba(6, 35, 29, 0.9) 56%,
      var(--ink) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background-image:
    linear-gradient(var(--pc-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--pc-line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.42;
}

.page-contact .contact-hero-inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(20px, 3.4vw, 34px);
}

.page-contact .pc-crumb {
  display: block;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-contact .contact-h1 {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(1.7rem, 6.2vw, 3.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--white);
}

.page-contact .contact-lede {
  margin: clamp(14px, 2.2vw, 20px) 0 0;
  max-width: 62ch;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--pc-soft);
}

.page-contact .contact-board {
  position: relative;
  margin-top: clamp(24px, 4vw, 42px);
  border: 2px solid var(--pc-line);
  background: var(--pc-panel);
  box-shadow: var(--shadow-hard);
  padding: clamp(20px, 3.4vw, 36px);
}

.page-contact .board-ruler {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background-image: repeating-linear-gradient(90deg,
      var(--gold) 0 2px,
      transparent 2px 16px);
  opacity: 0.85;
}

.page-contact .mail-label {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-contact .mail-address {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 4.7vw, 2.55rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  color: var(--cyan);
  overflow-wrap: anywhere;
  word-break: break-all;
}

.page-contact .mail-hint {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .contact-specs {
  display: grid;
  gap: clamp(14px, 2.2vw, 22px);
  grid-template-columns: 1fr;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--pc-line);
}

.page-contact .contact-spec {
  padding-left: 14px;
  border-left: 2px solid var(--pc-line);
}

.page-contact .contact-spec dt {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-spec dd {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.55;
  color: var(--white);
}

.page-contact .spec-mono {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  letter-spacing: 0.02em;
}

.page-contact .spec-note {
  margin: 8px 0 0;
  font-size: var(--fs-14);
  line-height: 1.65;
  color: var(--mist);
}

/* ---------------- 章节骨架 ---------------- */

.page-contact .pc-sec {
  padding: clamp(42px, 7vw, 86px) 0;
  border-bottom: 1px solid rgba(30, 58, 51, 0.7);
}

.page-contact .pc-sec-last {
  border-bottom: 0;
  padding-bottom: clamp(52px, 8vw, 100px);
}

.page-contact .pc-head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
  padding-left: clamp(14px, 2vw, 20px);
  border-left: 4px solid var(--cyan);
}

.page-contact .pc-index {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.24em;
  color: var(--gold);
}

.page-contact .pc-title {
  margin: 0;
  font-size: clamp(1.35rem, 4.2vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--white);
}

.page-contact .pc-note {
  margin: 0;
  max-width: 62ch;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--mist);
}

/* ---------------- 通道分流 ---------------- */

.page-contact .route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.2vw, 20px);
}

.page-contact .route-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  border: 2px solid var(--pc-line);
  background: var(--carbon);
  box-shadow: var(--shadow-hard);
  padding: clamp(16px, 2.6vw, 26px);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .route-item:hover,
.page-contact .route-item:focus-within {
  border-color: var(--gold);
  transform: translate(-2px, -2px);
}

.page-contact .route-num {
  font-family: var(--font-mono);
  font-size: var(--fs-30);
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
}

.page-contact .route-title {
  margin: 0 0 8px;
  font-size: var(--fs-22);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-contact .route-body p {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--pc-soft);
}

.page-contact .route-subject {
  margin-top: 12px !important;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: var(--fs-14);
  color: var(--mist);
}

.page-contact .route-subject code {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--cyan);
  background: var(--ink-2);
  border: 1px dashed var(--pc-line);
  padding: 4px 10px;
  overflow-wrap: anywhere;
}

/* ---------------- 写法要点 ---------------- */

.page-contact .mail-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
}

.page-contact .mail-step {
  border-top: 3px solid var(--gold);
  border-right: 2px solid var(--pc-line);
  border-bottom: 2px solid var(--pc-line);
  border-left: 2px solid var(--pc-line);
  background: var(--carbon);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-contact .mail-step-title {
  margin: 0 0 10px;
  font-size: var(--fs-17);
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--white);
}

.page-contact .mail-step p {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--pc-soft);
}

/* ---------------- 时段与次序 ---------------- */

.page-contact .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 38px);
}

.page-contact .window-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .window-item {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border-left: 4px solid var(--cyan);
  background: var(--ink-2);
}

.page-contact .window-time {
  font-family: var(--font-mono);
  font-size: var(--fs-22);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-contact .window-desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--pc-soft);
}

.page-contact .order-block {
  border: 2px solid var(--pc-line);
  background: var(--carbon);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 2.6vw, 26px);
}

.page-contact .order-title {
  margin: 0 0 6px;
  font-size: var(--fs-17);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-contact .order-list {
  list-style: none;
  counter-reset: pcorder;
  margin: 0;
  padding: 0;
}

.page-contact .order-item {
  counter-increment: pcorder;
  position: relative;
  padding: 13px 0 13px 48px;
  border-bottom: 1px dashed rgba(30, 58, 51, 0.95);
  font-size: var(--fs-17);
  line-height: 1.6;
  color: var(--pc-soft);
}

.page-contact .order-item:last-child {
  border-bottom: 0;
}

.page-contact .order-item::before {
  content: counter(pcorder, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 13px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  line-height: 1;
  color: var(--white);
  background: var(--ink-2);
  border: 1px solid var(--pc-line);
  padding: 4px 6px;
}

.page-contact .order-note {
  margin: 12px 0 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------------- 合作共建 ---------------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-contact .pc-figure {
  margin: 0;
  border: 2px solid var(--pc-line);
  box-shadow: var(--shadow-hard);
  background: var(--carbon);
}

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

.page-contact .pc-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--pc-line);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .coop-lede {
  margin: 0 0 18px;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--pc-soft);
}

.page-contact .coop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .coop-list li {
  position: relative;
  padding-left: 22px;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--pc-soft);
  border-top: 1px solid rgba(30, 58, 51, 0.85);
  padding-top: 14px;
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 12px;
  height: 2px;
  background: var(--cyan);
}

.page-contact .coop-list strong {
  color: var(--white);
  font-weight: 800;
}

/* ---------------- 页尾入口 ---------------- */

.page-contact .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .next-card {
  display: grid;
  gap: 8px;
  border: 2px solid var(--pc-line);
  background: var(--carbon);
  padding: 18px;
  text-decoration: none;
  color: var(--white);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-contact .next-card:hover,
.page-contact .next-card:focus-visible {
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
  transform: translate(-2px, -2px);
}

.page-contact .next-num {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .next-name {
  font-size: var(--fs-22);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .next-desc {
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--mist);
}

/* ---------------- 断点 ---------------- */

@media (min-width: 720px) {
  .page-contact .route-item {
    grid-template-columns: 84px 1fr;
    gap: 22px;
    align-items: start;
  }

  .page-contact .route-num {
    font-size: var(--fs-44);
  }

  .page-contact .contact-specs {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .next-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 860px) {
  .page-contact .mail-steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 940px) {
  .page-contact .split {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .page-contact .coop-grid {
    grid-template-columns: 1.05fr 1fr;
  }
}

@media (min-width: 1080px) {
  .page-contact .next-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .contact-board {
    padding: clamp(28px, 3vw, 42px);
  }
}

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

  .page-contact .route-item:hover,
  .page-contact .next-card:hover {
    transform: none;
  }
}