.page-contact {
  padding-bottom: 0;
}

.page-contact .breadcrumbs {
  padding-top: 32px;
  font-size: var(--step-2);
  color: var(--muted);
}

.page-contact .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .breadcrumbs li + li::before {
  content: "/";
  color: var(--line-strong);
}

.page-contact .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-contact .breadcrumbs a:hover {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

.page-contact .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(28px, 5vw, 40px);
  line-height: 1.12;
  letter-spacing: .01em;
  margin: 8px 0 12px;
  color: var(--white);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  display: grid;
  gap: 32px;
  margin-top: 20px;
  align-items: start;
}

.page-contact .h-display {
  font-size: clamp(38px, 8.4vw, 68px);
  line-height: 1.02;
  margin: 10px 0 20px;
}

.page-contact .contact-hero__main .lede {
  max-width: 56ch;
}

.page-contact .contact-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 28px 22px;
  background: var(--ink-3);
  border: 1px solid rgba(232, 255, 58, .48);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 88% 0%, rgba(232, 255, 58, .13), transparent 60%);
  pointer-events: none;
}

.page-contact .contact-card > * {
  position: relative;
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  color: var(--whistle);
}

.page-contact .contact-card__mail {
  margin: 0;
  padding-bottom: 16px;
  border-bottom: 1px dashed rgba(232, 255, 58, .38);
  font-family: var(--font-mono);
  font-size: clamp(16px, 4.2vw, 24px);
  line-height: 1.4;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .contact-card__list > div {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
}

.page-contact .contact-card__list dt {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .08em;
  color: var(--muted);
}

.page-contact .contact-card__list dd {
  margin: 0;
  font-size: var(--step-3);
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__note {
  margin: 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: var(--step-2);
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 三条通道 ---------- */

.page-contact .channel-grid {
  display: grid;
  gap: 20px;
  margin-top: 40px;
}

.page-contact .channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 20px 28px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 2px solid var(--cyan);
}

.page-contact .channel--whistle {
  border-top-color: var(--whistle);
}

.page-contact .channel--amber {
  border-top-color: var(--amber);
}

.page-contact .channel__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .16em;
  color: var(--muted);
}

.page-contact .channel__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--step-5);
  line-height: 1.15;
  color: var(--white);
}

.page-contact .channel__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-3);
  line-height: 1.5;
  color: var(--whistle-soft);
  overflow-wrap: anywhere;
}

.page-contact .channel--amber .channel__value {
  color: var(--white);
}

.page-contact .channel__text {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .channel__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .channel__list li {
  position: relative;
  padding-left: 16px;
}

.page-contact .channel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 7px;
  height: 1px;
  background: var(--whistle);
}

/* ---------- 复核流程 ---------- */

.page-contact .review-layout {
  display: grid;
  gap: 36px;
  margin-top: 40px;
}

.page-contact .review-visual .media {
  margin: 0;
}

.page-contact .review-visual .media__frame {
  position: relative;
  display: block;
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-contact .review-visual .media__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 16, 48, 0) 45%, rgba(11, 16, 48, .72) 100%);
  pointer-events: none;
}

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

.page-contact .review-visual .media__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .review-sla {
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 2px solid var(--amber);
  background: rgba(255, 90, 43, .07);
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--white);
}

.page-contact .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
  display: grid;
  gap: 30px;
}

.page-contact .steps::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: var(--line-strong);
}

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

.page-contact .step__num {
  position: absolute;
  left: 0;
  top: 0;
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 1px solid var(--whistle);
  background: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--whistle);
  transition: background .2s var(--ease), color .2s var(--ease);
}

.page-contact .step:hover .step__num,
.page-contact .step:focus-within .step__num {
  background: var(--whistle);
  color: var(--ink-3);
}

.page-contact .step__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: var(--step-4);
  line-height: 1.2;
  color: var(--white);
}

.page-contact .step__text {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .step__materials {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.6;
  color: var(--mist);
  transition: color .2s var(--ease);
}

.page-contact .step:hover .step__materials {
  color: var(--whistle-soft);
}

/* ---------- 合作与引用 ---------- */

.page-contact .collab-grid {
  display: grid;
  gap: 22px;
  margin-top: 40px;
}

.page-contact .collab {
  padding: 26px 22px 28px;
  background: var(--ink-2);
  border: 1px solid var(--line);
}

.page-contact .collab__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: var(--step-4);
  line-height: 1.2;
  color: var(--white);
}

.page-contact .collab__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  font-size: var(--step-3);
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .collab__list li {
  position: relative;
  padding-left: 20px;
}

.page-contact .collab__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .collab__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .cite-block {
  margin-top: 36px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(55, 224, 200, .07), rgba(55, 224, 200, 0) 62%);
}

.page-contact .cite-sample {
  margin: 0 0 22px;
  padding: 14px 16px;
  border: 1px dashed rgba(55, 224, 200, .42);
  background: rgba(5, 8, 28, .55);
  font-family: var(--font-mono);
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .cite-text {
  margin: 0 0 16px;
  max-width: 68ch;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .cite-block .btn {
  margin-top: 6px;
}

/* ---------- 回复节奏 ---------- */

.page-contact .sla-list {
  margin-top: 36px;
  border-top: 1px solid var(--line);
}

.page-contact .sla-row {
  display: grid;
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .sla-row__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: .08em;
  color: var(--whistle);
}

.page-contact .sla-row__val {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 服务地区 ---------- */

.page-contact .city-band {
  display: grid;
  gap: 28px;
  align-items: center;
}

.page-contact .city-band .media {
  margin: 0;
}

.page-contact .city-band .media__frame {
  display: block;
  border: 1px solid var(--line);
  overflow: hidden;
  background: var(--ink-2);
}

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

.page-contact .city-band__text h2 {
  margin: 8px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 36px);
  line-height: 1.16;
  color: var(--white);
}

.page-contact .city-band__text .prose {
  font-size: var(--step-3);
  line-height: 1.78;
  color: var(--muted);
  max-width: 60ch;
}

.page-contact .city-band__text .btn {
  margin-top: 22px;
}

/* ---------- 收尾带 ---------- */

.page-contact .page-close {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px 24px;
  margin-top: 64px;
  padding: 18px 0 8px;
  border-top: 1px solid var(--line);
}

.page-contact .page-close__icp {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .06em;
  color: var(--muted);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 780px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .collab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .sla-row {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 28px;
    align-items: baseline;
    padding: 24px 0;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 500px);
    gap: 56px;
    margin-top: 28px;
  }

  .page-contact .review-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 52px;
    align-items: start;
  }

  .page-contact .city-band {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 52px;
  }

  .page-contact .steps {
    gap: 38px;
  }
}

@media (max-width: 480px) {
  .page-contact .contact-card__list > div {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-contact .step {
    padding-left: 40px;
  }

  .page-contact .step__title {
    font-size: var(--step-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .step__num,
  .page-contact .step__materials {
    transition: none;
  }
}