.page-contact {
  position: relative;
  isolation: isolate;
  background: var(--night);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-contact::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 520px;
  background:
    radial-gradient(120% 70% at 10% 0%, rgba(53, 240, 192, 0.14), transparent 62%),
    radial-gradient(90% 60% at 92% 6%, rgba(124, 107, 255, 0.10), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.page-contact h2 {
  margin: 0 0 clamp(12px, 2vw, 20px);
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 50px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.005em;
}

.page-contact .lede {
  max-width: 54ch;
  margin: 0 0 clamp(24px, 4vw, 42px);
  font-size: clamp(15px, 1.15vw, 18px);
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(24px, 4vw, 48px);
  padding-bottom: clamp(32px, 5vw, 64px);
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .hero-kicker {
  margin: 0 0 clamp(10px, 2vw, 18px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal);
}

.page-contact h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(44px, 13vw, 122px);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: -0.035em;
  color: var(--text);
  text-shadow: 0 0 60px rgba(53, 240, 192, 0.18);
}

.page-contact .hero-body {
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .hero-lede {
  max-width: 44ch;
  margin: 0;
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.78;
  color: var(--text);
}

.page-contact .hero-tags {
  list-style: none;
  margin: clamp(16px, 2.6vw, 24px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .annotation {
  display: none;
}

@media (min-width: 1000px) {
  .page-contact .contact-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    grid-template-areas:
      "kicker kicker"
      "title body";
    column-gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }
  .page-contact .contact-hero .hero-kicker { grid-area: kicker; }
  .page-contact .contact-hero h1 { grid-area: title; }
  .page-contact .contact-hero .hero-body {
    grid-area: body;
    margin-top: 0;
    padding-bottom: 10px;
  }
}

@media (min-width: 1280px) {
  .page-contact .contact-hero .annotation {
    display: block;
    position: absolute;
    top: clamp(24px, 4vw, 48px);
    right: clamp(8px, 2vw, 24px);
    margin: 0;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.34em;
    color: var(--amber);
    opacity: 0.85;
  }
}

/* ---------- 问题分流 ---------- */

.page-contact .issue-router {
  padding: clamp(40px, 7vw, 96px) 0;
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .router-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
  align-items: start;
}

@media (min-width: 960px) {
  .page-contact .router-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(28px, 3.5vw, 52px);
  }
}

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

.page-contact .issue-item {
  position: relative;
  display: block;
}

.page-contact .route-radio {
  position: absolute;
  top: 0;
  left: 0;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .issue-label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: start;
  width: 100%;
  padding: clamp(14px, 2vw, 20px) clamp(14px, 2vw, 22px);
  border: var(--edge) solid var(--line);
  background: var(--deep);
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--shadow);
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease),
    transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-contact .issue-label:hover {
  border-color: var(--teal);
  background: var(--panel);
}

.page-contact .route-radio:checked + .issue-label {
  background: var(--panel);
  border-color: var(--neon);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--shadow);
}

.page-contact .route-radio:focus-visible + .issue-label {
  outline: 2px solid var(--neon);
  outline-offset: 3px;
}

.page-contact .issue-num {
  padding-top: 2px;
  font-size: 13px;
  color: var(--teal);
}

.page-contact .route-radio:checked + .issue-label .issue-num {
  color: var(--neon);
}

.page-contact .issue-text strong {
  display: block;
  font-size: clamp(15px, 1.1vw, 17px);
  font-weight: 600;
  line-height: 1.45;
  color: var(--text);
}

.page-contact .issue-text > span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .issue-panels {
  display: grid;
  gap: clamp(16px, 2vw, 24px);
}

.page-contact .channel-card {
  position: relative;
  padding: clamp(20px, 3vw, 34px);
  border: var(--edge) solid var(--line);
  background: var(--panel);
  box-shadow: 8px 8px 0 var(--shadow);
}

@supports selector(:has(*)) {
  .page-contact .channel-card {
    display: none;
  }
  .page-contact .router-grid:has(#route-access:checked) .channel-card[data-panel="access"],
  .page-contact .router-grid:has(#route-sync:checked) .channel-card[data-panel="sync"],
  .page-contact .router-grid:has(#route-data:checked) .channel-card[data-panel="data"],
  .page-contact .router-grid:has(#route-fix:checked) .channel-card[data-panel="fix"] {
    display: block;
  }
}

.page-contact .card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-contact .card-head h3 {
  flex: 1 1 auto;
  font-size: clamp(19px, 1.7vw, 25px);
}

.page-contact .card-body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

.page-contact .card-facts {
  margin: 20px 0 0;
}

.page-contact .card-facts > div {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

@media (min-width: 560px) {
  .page-contact .card-facts > div {
    grid-template-columns: minmax(88px, 118px) minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

.page-contact .card-facts dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-contact .card-facts dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.66;
  color: var(--text);
}

.page-contact .card-facts dd a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .card-foot {
  margin: 24px 0 0;
}

.page-contact .router-figure {
  margin: clamp(28px, 4vw, 52px) 0 0;
}

.page-contact .router-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 9;
}

/* ---------- 两个渠道 ---------- */

.page-contact .channels {
  padding: clamp(40px, 7vw, 96px) 0;
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .channel-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(16px, 2.5vw, 28px);
}

@media (min-width: 860px) {
  .page-contact .channel-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(24px, 3vw, 40px);
  }
}

.page-contact .channel-block {
  padding: clamp(22px, 3vw, 34px);
  border: var(--edge) solid var(--line);
  background: var(--deep);
  box-shadow: 6px 6px 0 var(--shadow);
}

.page-contact .channel-block--mail {
  border-left: 6px solid var(--neon);
}

.page-contact .channel-block--phone {
  border-left: 6px solid var(--amber);
}

.page-contact .channel-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-contact .channel-top h3 {
  font-size: clamp(20px, 1.8vw, 26px);
}

.page-contact .channel-value {
  margin: 0 0 clamp(12px, 2vw, 18px);
  font-size: clamp(17px, 2.1vw, 26px);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--neon);
  word-break: break-all;
}

.page-contact .channel-block--phone .channel-value {
  color: var(--amber);
  word-break: normal;
}

.page-contact .channel-desc {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

.page-contact .channel-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .channel-points li {
  position: relative;
  padding: 10px 0 10px 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

.page-contact .channel-points li::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 0;
  width: 8px;
  height: 2px;
  background: var(--teal);
}

/* ---------- 通信地址 ---------- */

.page-contact .where {
  padding: clamp(40px, 7vw, 96px) 0;
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .where-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.5vw, 48px);
  align-items: center;
}

@media (min-width: 900px) {
  .page-contact .where-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
}

.page-contact .where-text p {
  max-width: 46ch;
  margin: 0 0 clamp(14px, 2vw, 20px);
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .where-addr {
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2vw, 22px);
  border: var(--edge) solid var(--line);
  border-left: 6px solid var(--violet);
  background: var(--panel);
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.6;
  color: var(--text);
  box-shadow: 5px 5px 0 var(--shadow);
}

.page-contact .where-meta {
  list-style: none;
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .where-meta li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 520px) {
  .page-contact .where-meta li {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 14px;
  }
}

.page-contact .where-meta .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--teal);
}

.page-contact .where-figure {
  margin: 0;
}

.page-contact .where-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

/* ---------- 信息清单 ---------- */

.page-contact .prepare {
  padding: clamp(40px, 7vw, 96px) 0;
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--edge) solid var(--line);
}

.page-contact .checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 24px) 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 720px) {
  .page-contact .checklist li {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 24px;
  }
}

.page-contact .check-num {
  padding-top: 3px;
  font-size: 13px;
  color: var(--neon);
  letter-spacing: 0.08em;
}

.page-contact .check-body strong {
  display: block;
  margin-bottom: 6px;
  font-size: clamp(16px, 1.2vw, 18px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .check-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .prepare-note {
  max-width: 62ch;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-left: 18px;
  border-left: 2px solid var(--violet);
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 自助入口 ---------- */

.page-contact .quick-links {
  padding: clamp(40px, 7vw, 96px) 0;
  border-bottom: var(--edge) solid var(--line);
}

.page-contact .quick-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(10px, 1.6vw, 16px);
}

.page-contact .quick-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 24px) clamp(16px, 2.4vw, 28px);
  border: var(--edge) solid var(--line);
  background: var(--deep);
  color: var(--text);
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--shadow);
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease),
    box-shadow 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .quick-list a:hover,
.page-contact .quick-list a:focus-visible {
  border-color: var(--neon);
  background: var(--panel);
  transform: translate(-2px, -2px);
  box-shadow: 7px 7px 0 var(--shadow);
}

.page-contact .quick-idx {
  padding-top: 3px;
  font-size: 13px;
  color: var(--neon);
  letter-spacing: 0.1em;
}

.page-contact .quick-text strong {
  display: block;
  font-size: clamp(15px, 1.15vw, 17px);
  font-weight: 600;
  line-height: 1.5;
}

.page-contact .quick-text > span {
  display: block;
  margin-top: 5px;
  font-size: 13px;
  line-height: 1.66;
  color: var(--muted);
}

.page-contact .quick-note {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 回复窗口 ---------- */

.page-contact .reply-window {
  padding: clamp(40px, 7vw, 96px) 0 0;
}

.page-contact .window-track {
  list-style: none;
  margin: clamp(24px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-contact .window-track li {
  position: relative;
  padding: clamp(20px, 2.6vw, 28px) 0 clamp(16px, 2vw, 22px);
  border-top: 2px solid var(--line);
  display: grid;
  gap: 8px;
}

.page-contact .window-track li::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--line);
}

.page-contact .window-track li:first-child {
  border-top-color: var(--neon);
}

.page-contact .window-track li:first-child::before {
  background: var(--neon);
  box-shadow: 0 0 0 5px rgba(53, 240, 192, 0.16);
}

.page-contact .window-time {
  font-size: clamp(20px, 2.4vw, 30px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .window-label {
  font-size: 14px;
  line-height: 1.66;
  color: var(--muted);
}

@media (min-width: 860px) {
  .page-contact .window-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-contact .window-track li {
    padding-right: clamp(16px, 2vw, 28px);
  }
}

.page-contact .more-pages {
  list-style: none;
  margin: clamp(32px, 5vw, 56px) 0 0;
  padding: clamp(16px, 2.4vw, 24px) 0 0;
  border-top: var(--edge) solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-contact .more-pages a {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .more-pages a:hover,
.page-contact .more-pages a:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .issue-label,
  .page-contact .quick-list a,
  .page-contact .more-pages a {
    transition: none;
  }
  .page-contact .route-radio:checked + .issue-label,
  .page-contact .quick-list a:hover,
  .page-contact .quick-list a:focus-visible {
    transform: none;
  }
}