.page-contact {
  --cc-panel: rgba(18, 52, 48, 0.62);
  --cc-panel-strong: rgba(18, 52, 48, 0.88);
  --cc-hair: rgba(201, 214, 211, 0.16);
  --cc-hair-strong: rgba(201, 214, 211, 0.3);
  display: block;
  padding-bottom: 3.5rem;
}

/* ---------- 框景首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  width: min(100% - 1.5rem, var(--wrap));
  margin: 1.25rem auto 0;
  padding: clamp(2rem, 6vw, 3.6rem) clamp(1.1rem, 4vw, 3rem) clamp(1.5rem, 4vw, 2.4rem);
  border: 1px solid var(--cc-hair-strong);
  border-radius: var(--r-lg);
  background: var(--ink-850);
  box-shadow: var(--shadow);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 12px;
  z-index: 2;
  background-image: repeating-linear-gradient(90deg, var(--ice-dim) 0 1px, transparent 1px 26px);
  opacity: 0.32;
}

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

.page-contact .contact-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.24;
  filter: saturate(0.55) contrast(1.06);
}

.page-contact .contact-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(180deg, rgba(234, 242, 240, 0.038) 0 1px, transparent 1px 4px),
    linear-gradient(180deg, rgba(11, 31, 28, 0.42) 0%, rgba(11, 31, 28, 0.9) 62%, var(--ink-900) 100%);
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 78ch;
}

.page-contact .contact-hero h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 5.2vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ice-bright);
}

.page-contact .contact-hero .lede {
  margin: 0.9rem 0 0;
  color: var(--ice);
}

.page-contact .contact-hero__facts {
  list-style: none;
  margin: 1.6rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}

.page-contact .contact-hero__facts > li {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  padding: 0.75rem 0 0.75rem 0.9rem;
  border-left: 2px solid rgba(255, 158, 44, 0.55);
}

.page-contact .contact-hero__label {
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--ice-dim);
}

.page-contact .contact-hero__value {
  font-size: clamp(1rem, 3.4vw, 1.25rem);
  color: var(--amber);
  word-break: break-all;
}

/* ---------- 分屏骨架 ---------- */
.page-contact .contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.75rem;
  margin-top: 2.25rem;
}

.page-contact .contact-rail__title {
  margin: 0 0 0.6rem;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--ice-dim);
}

.page-contact .contact-rail__list {
  list-style: none;
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0 0 0.4rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-contact .contact-rail__list > li {
  flex: 0 0 auto;
}

.page-contact .contact-rail__list a {
  display: block;
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--cc-hair);
  border-radius: var(--pill);
  font-size: 0.82rem;
  color: var(--ice);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .contact-rail__list a:hover,
.page-contact .contact-rail__list a:focus-visible {
  border-color: var(--cc-hair-strong);
  background: rgba(30, 74, 68, 0.5);
  color: var(--ice-bright);
}

.page-contact .contact-rail__list a.is-active {
  border-color: rgba(255, 158, 44, 0.7);
  color: var(--amber);
  background: rgba(255, 158, 44, 0.1);
}

.page-contact .contact-body {
  min-width: 0;
  display: grid;
  gap: 2.5rem;
}

/* ---------- 章节 ---------- */
.page-contact .contact-section {
  min-width: 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--cc-hair);
}

.page-contact .contact-section:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-contact .contact-lead {
  max-width: 68ch;
  margin: 0 0 1.25rem;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--ice);
}

.page-contact .contact-section h3 {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
  color: var(--ice-bright);
}

/* 联络信息：等宽对齐 */
.page-contact .contact-list {
  margin: 0 0 1rem;
  display: grid;
  gap: 0;
}

.page-contact .contact-list .contact-list__item {
  display: grid;
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--cc-hair);
}

.page-contact .contact-list .contact-list__term {
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--ice-dim);
}

.page-contact .contact-list .contact-list__desc {
  margin: 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--ice);
}

.page-contact .contact-list .num {
  color: var(--amber);
}

/* ---------- 三类事项卡片 ---------- */
.page-contact .contact-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-contact .contact-card {
  position: relative;
  padding: 1.15rem 1.1rem 1.25rem;
  background: var(--ink-800);
  border: 1px solid var(--cc-hair);
  border-left-width: 3px;
  box-shadow: none;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .contact-card--install {
  border-left-color: var(--cyan);
}

.page-contact .contact-card--odds {
  border-left-color: var(--amber);
}

.page-contact .contact-card--season {
  border-left-color: var(--violet);
}

.page-contact .contact-card__title {
  margin: 0;
  font-size: 1.12rem;
}

.page-contact .contact-card__intro {
  margin: 0.35rem 0 0.85rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ice-dim);
}

.page-contact .contact-card__fields {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-contact .contact-card__fields > li {
  padding-left: 0.85rem;
  border-left: 1px solid var(--cc-hair-strong);
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--ice);
}

.page-contact .contact-card__fields .num {
  color: var(--amber);
}

.page-contact .contact-card__field {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--ice-bright);
  margin-bottom: 0.15rem;
}

/* ---------- 排查步骤 ---------- */
.page-contact .contact-steps {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-contact .contact-step {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.9rem;
  padding: 1rem 1rem 1.1rem;
  border: 1px solid var(--cc-hair);
  border-radius: var(--r-md);
  background: var(--cc-panel);
}

.page-contact .contact-step__index {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.25rem;
  line-height: 1;
  padding-top: 0.15rem;
  color: var(--amber);
}

.page-contact .contact-step__body {
  min-width: 0;
}

.page-contact .contact-step__title {
  margin: 0 0 0.3rem;
  font-size: 1.02rem;
}

.page-contact .contact-step__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--ice);
}

.page-contact .contact-step__body .num {
  color: var(--amber);
}

/* ---------- 纠错流程刻度条 ---------- */
.page-contact .contact-flow {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

.page-contact .contact-flow__item {
  position: relative;
  padding-top: 1.5rem;
  min-width: 0;
}

.page-contact .contact-flow__item::before {
  content: "";
  position: absolute;
  top: 0.15rem;
  left: 0;
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 199, 176, 0.14);
}

.page-contact .contact-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.74rem;
  letter-spacing: 0.14em;
  color: var(--ice-dim);
}

.page-contact .contact-flow__title {
  margin: 0.3rem 0 0.3rem;
  font-size: 1.08rem;
}

.page-contact .contact-flow__item p {
  margin: 0;
  max-width: 40ch;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--ice);
}

.page-contact .contact-flow__item .num {
  color: var(--amber);
}

.page-contact .contact-figure {
  margin: 0 0 1.5rem;
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 3;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.82);
}

/* ---------- 用途边界 ---------- */
.page-contact .contact-section--boundary {
  padding: 1.5rem 1.1rem 1.6rem;
  border: 1px solid var(--cc-hair);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(30, 74, 68, 0.34) 0%, rgba(11, 31, 28, 0.72) 100%);
}

.page-contact .contact-boundary {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1rem;
}

.page-contact .contact-boundary__title {
  margin: 0 0 0.35rem;
  font-size: 1.02rem;
}

.page-contact .contact-boundary p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--ice);
}

.page-contact .contact-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.page-contact .contact-links__item {
  display: grid;
  gap: 0.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--cc-hair);
  border-radius: var(--r-md);
  background: rgba(11, 31, 28, 0.5);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-contact .contact-links__item:hover,
.page-contact .contact-links__item:focus-visible {
  border-color: rgba(255, 158, 44, 0.55);
  transform: translateY(-2px);
}

.page-contact .contact-links__title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--ice-bright);
}

.page-contact .contact-links__desc {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--ice-dim);
}

.page-contact .contact-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

/* ---------- 筛选条 ---------- */
.page-contact .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.1rem;
}

.page-contact .filter-chip {
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--cc-hair);
  border-radius: var(--pill);
  background: transparent;
  color: var(--ice);
  font-size: 0.86rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-contact .filter-chip:hover,
.page-contact .filter-chip:focus-visible {
  border-color: var(--cc-hair-strong);
  color: var(--ice-bright);
}

.page-contact .filter-chip.is-active {
  border-color: rgba(255, 158, 44, 0.72);
  background: rgba(255, 158, 44, 0.12);
  color: var(--amber);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
  }

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

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

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

@media (min-width: 900px) {
  .page-contact .contact-layout {
    grid-template-columns: minmax(190px, 1fr) minmax(0, 2.4fr);
    gap: 3rem;
    align-items: start;
  }

  .page-contact .contact-rail {
    position: sticky;
    top: 96px;
    padding-left: 0.25rem;
  }

  .page-contact .contact-rail__list {
    flex-direction: column;
    gap: 0.15rem;
    overflow: visible;
    padding: 0 0 0 0.9rem;
    border-left: 1px solid var(--cc-hair);
  }

  .page-contact .contact-rail__list a {
    border: 0;
    border-radius: 0;
    padding: 0.42rem 0.5rem;
    background: transparent;
    color: var(--ice-dim);
    position: relative;
  }

  .page-contact .contact-rail__list a::before {
    content: "";
    position: absolute;
    left: -1.05rem;
    top: 50%;
    width: 0.5rem;
    height: 0.5rem;
    margin-top: -0.25rem;
    border-radius: 50%;
    background: var(--ink-700);
    transition: background-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  }

  .page-contact .contact-rail__list a.is-active {
    background: transparent;
    color: var(--amber);
  }

  .page-contact .contact-rail__list a.is-active::before {
    background: var(--amber);
    box-shadow: 0 0 0 4px rgba(255, 158, 44, 0.16);
  }

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

  .page-contact .contact-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.75rem;
  }

  .page-contact .contact-flow::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0.44rem;
    height: 1px;
    background: linear-gradient(90deg, var(--cc-hair-strong), var(--cc-hair) 78%, transparent);
  }

  .page-contact .contact-flow {
    position: relative;
  }
}