.page-contact {
  --cs-hair: rgba(201, 211, 216, .20);
  --cs-hair-soft: rgba(201, 211, 216, .12);
  --cs-paper-line: rgba(27, 21, 18, .14);
  background: var(--ink-900);
  color: var(--warm-white);
}

.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(24px, 4vw, 44px);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .12em;
  color: var(--grayblue);
}

.page-contact .breadcrumb a {
  color: var(--grayblue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

.page-contact .breadcrumb .breadcrumb-sep {
  color: var(--teal);
}

.page-contact .breadcrumb [aria-current="page"] {
  color: var(--warm-white);
}

/* ---------- 首屏 ---------- */
.page-contact .cs-hero {
  position: relative;
  padding-block: clamp(16px, 3vw, 30px) 0;
  overflow: hidden;
}

.page-contact .cs-hero-head {
  display: flex;
  flex-direction: column;
  gap: clamp(10px, 2vw, 18px);
}

.page-contact .cs-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 104px);
  line-height: .95;
  letter-spacing: -.035em;
  color: var(--warm-white);
  text-wrap: balance;
}

.page-contact .cs-hero h1 em {
  font-style: normal;
  color: var(--cyan);
}

.page-contact .cs-hero-body {
  margin-top: clamp(20px, 3.5vw, 34px);
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 3vw, 40px);
  align-items: flex-end;
  justify-content: space-between;
}

.page-contact .cs-hero-body .lede {
  max-width: 56ch;
  margin: 0;
  color: var(--grayblue);
}

.page-contact .cs-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .cs-hero-media {
  margin-top: clamp(28px, 5vw, 56px);
}

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

.page-contact .cs-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-contact .cs-hero-media .media-cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .06em;
  color: var(--grayblue);
}

/* ---------- 渠道 ---------- */
.page-contact .cs-channels {
  padding-block: clamp(44px, 8vw, 104px);
}

.page-contact .cs-channels-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .cs-h2 {
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.6vw, 46px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--warm-white);
  text-wrap: balance;
}

.page-contact .cs-channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .cs-channel {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(18px, 3vw, 26px) 0;
  border-top: 1px solid var(--cs-hair);
}

.page-contact .cs-channel:last-child {
  border-bottom: 1px solid var(--cs-hair);
}

.page-contact .cs-channel--mail { --cs-accent: var(--cyan); }
.page-contact .cs-channel--phone { --cs-accent: var(--orange); }
.page-contact .cs-channel--addr { --cs-accent: var(--sand); }

.page-contact .cs-channel-no {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  color: var(--cs-accent);
  padding-top: .4em;
}

.page-contact .cs-channel-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--grayblue);
}

.page-contact .cs-channel-value {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.6vw, 26px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--warm-white);
  overflow-wrap: anywhere;
}

.page-contact .cs-channel-use {
  margin: 0;
  max-width: 52ch;
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--grayblue);
}

/* 准备清单面板 */
.page-contact .cs-prep {
  padding: clamp(20px, 3vw, 28px);
}

.page-contact .cs-prep-title {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .16em;
  color: var(--orange);
}

.page-contact .cs-prep-sub {
  margin: 0 0 16px;
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--grayblue);
}

.page-contact .cs-prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.page-contact .cs-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-height: 44px;
  padding: 8px 0;
  cursor: pointer;
  font-size: var(--step-2);
  line-height: 1.55;
  color: var(--warm-white);
}

.page-contact .cs-check input {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  border: 1.5px solid rgba(201, 211, 216, .55);
  border-radius: 3px;
  background: transparent;
  position: relative;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-contact .cs-check input:checked {
  background: var(--orange);
  border-color: var(--orange);
}

.page-contact .cs-check input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--brown);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.page-contact .cs-check input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.page-contact .cs-check input:checked + span {
  color: var(--grayblue);
}

/* ---------- 分流 ---------- */
.page-contact .cs-routes {
  color: var(--brown);
}

.page-contact .cs-routes .cs-h2 {
  color: var(--brown);
}

.page-contact .cs-intro {
  margin: 0 0 clamp(22px, 3vw, 34px);
  max-width: 62ch;
  font-size: var(--step-3);
  line-height: 1.7;
  color: rgba(27, 21, 18, .78);
}

.page-contact .cs-routes-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-contact .cs-routes-grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .cs-routes-figure {
  margin: 0;
}

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

.page-contact .cs-routes-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .cs-routes-figure .media-cap {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.6;
  color: rgba(27, 21, 18, .62);
}

.page-contact .cs-route-list {
  display: flex;
  flex-direction: column;
  gap: clamp(14px, 2vw, 20px);
}

.page-contact .cs-route {
  --cs-accent: var(--cyan);
  position: relative;
  background: var(--warm-white);
  border: 1px solid var(--cs-paper-line);
  padding: clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 26px) clamp(24px, 3vw, 34px);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}

.page-contact .cs-route::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--cs-accent);
}

.page-contact .cs-route:hover {
  transform: translateY(-3px);
  border-color: rgba(27, 21, 18, .3);
}

.page-contact .cs-route--sand { --cs-accent: var(--sand); }
.page-contact .cs-route--cyan { --cs-accent: var(--teal); }
.page-contact .cs-route--orange { --cs-accent: var(--orange); }
.page-contact .cs-route--red { --cs-accent: var(--sig-red); }

.page-contact .cs-route h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 24px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--brown);
}

.page-contact .cs-route p {
  margin: 0 0 12px;
  font-size: var(--step-2);
  line-height: 1.72;
  color: rgba(27, 21, 18, .80);
}

.page-contact .cs-route .cs-route-prep {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
  margin: 0 0 12px;
  padding: 10px 12px;
  background: rgba(27, 21, 18, .05);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  line-height: 1.65;
  color: var(--brown);
}

.page-contact .cs-route-prep-label {
  color: var(--teal);
  letter-spacing: .1em;
}

.page-contact .cs-route-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 4px 0;
  font-size: var(--step-2);
  font-weight: 600;
  color: var(--brown);
  text-decoration: none;
  border-bottom: 2px solid var(--cs-accent);
  transition: color var(--t-fast) var(--ease);
}

.page-contact .cs-route-link:hover {
  color: var(--teal);
}

.page-contact .cs-route-link:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

/* ---------- 回复节奏 ---------- */
.page-contact .cs-sla {
  padding-block: clamp(44px, 7vw, 92px);
}

.page-contact .cs-sla-wrap {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  grid-template-columns: minmax(0, 1fr);
}

.page-contact .cs-sla-text {
  margin: 0 0 14px;
  max-width: 56ch;
  font-size: var(--step-2);
  line-height: 1.78;
  color: var(--grayblue);
}

.page-contact .cs-sla-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .cs-sla-card {
  padding: clamp(16px, 2.4vw, 22px);
}

.page-contact .cs-sla-big {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--warm-white);
}

.page-contact .cs-sla-small {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--grayblue);
}

/* ---------- 窄幅信息带 ---------- */
.page-contact .cs-strip {
  background: var(--ink-900);
  border-top: 1px solid var(--cs-hair);
  padding-block: clamp(24px, 4vw, 40px);
}

.page-contact .cs-strip-inner {
  display: grid;
  gap: clamp(16px, 3vw, 28px);
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}

.page-contact .cs-strip-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--teal);
}

.page-contact .cs-strip-value {
  margin: 0;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--grayblue);
  overflow-wrap: anywhere;
}

.page-contact .cs-strip a {
  color: var(--warm-white);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 248, 236, .35);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 940px) {
  .page-contact .cs-channels-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .cs-routes-grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-contact .cs-routes-figure {
    position: sticky;
    top: 96px;
  }

  .page-contact .cs-sla-wrap {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (max-width: 640px) {
  .page-contact .cs-hero-media img {
    aspect-ratio: 4 / 3;
  }

  .page-contact .cs-channel {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .cs-channel-no {
    padding-top: 0;
  }

  .page-contact .cs-route {
    clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .cs-route,
  .page-contact .cs-route-link,
  .page-contact .breadcrumb a,
  .page-contact .cs-check input,
  .page-contact .cs-strip a {
    transition: none;
  }

  .page-contact .cs-route:hover {
    transform: none;
  }
}