.page-contact {
  --pc-violet: #6E5BE8;
  --pc-rose: #D9485A;

  position: relative;
  background: var(--ink);
  color: var(--text);
}

/* ---------- HERO ---------- */

.page-contact .pc-hero {
  position: relative;
  padding: clamp(32px, 6vw, 80px) 0 clamp(42px, 7vw, 88px);
  overflow: hidden;
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(72, 240, 208, 0.10), transparent 58%),
    radial-gradient(90% 80% at 100% 100%, rgba(42, 35, 80, 0.60), transparent 62%),
    var(--ink);
}

.page-contact .pc-hero::after {
  content: "";
  position: absolute;
  left: -12%;
  top: 68%;
  width: 130%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(72, 240, 208, 0.45) 30%, rgba(255, 138, 61, 0.32) 68%, transparent);
  transform: rotate(-5.5deg);
  pointer-events: none;
}

.page-contact .pc-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(28px, 4vw, 54px);
  align-items: center;
}

.page-contact .breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 20px;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-contact .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: rgba(126, 154, 146, 0.6);
}

.page-contact .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

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

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

.page-contact .pc-hero h1 {
  margin: 0 0 18px;
  max-width: 15ch;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.2vw, 66px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-contact .pc-lead {
  max-width: 46ch;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--silver);
}

.page-contact .pc-hero-meta {
  list-style: none;
  margin: 0 0 30px;
  padding: 0;
  max-width: 470px;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .pc-hero-meta li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-meta-k {
  min-width: 96px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .pc-meta-v {
  font-size: 14px;
  line-height: 1.6;
  color: var(--cream);
}

.page-contact .pc-hero-figure {
  margin: 0;
}

.page-contact .pc-hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(201, 214, 210, 0.14);
  border-radius: 4px 26px 4px 26px;
}

.page-contact .pc-hero-figure figcaption {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 2px solid rgba(72, 240, 208, 0.5);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 通用标题与导语 ---------- */

.page-contact .pc-channels h2,
.page-contact .pc-writing h2,
.page-contact .pc-routes h2,
.page-contact .pc-feedback h2,
.page-contact .pc-visit h2 {
  margin: 0 0 14px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.6vw, 42px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-contact .pc-intro {
  max-width: 58ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--silver);
}

/* ---------- 渠道卡片 ---------- */

.page-contact .pc-channels {
  background: linear-gradient(180deg, var(--ink) 0%, rgba(10, 26, 47, 0.85) 130%);
}

.page-contact .pc-channel-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-contact .pc-channel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px 20px 4px 20px;
  background: linear-gradient(180deg, rgba(18, 23, 26, 0.92), rgba(11, 43, 38, 0.86));
  transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}

.page-contact .pc-channel:hover,
.page-contact .pc-channel:focus-within {
  transform: translateY(-4px);
  border-color: rgba(72, 240, 208, 0.42);
}

.page-contact .pc-channel--mail {
  border-color: rgba(255, 138, 61, 0.34);
  background: linear-gradient(180deg, rgba(18, 23, 26, 0.95), rgba(42, 35, 80, 0.6));
}

.page-contact .pc-channel--mail:hover,
.page-contact .pc-channel--mail:focus-within {
  border-color: rgba(255, 138, 61, 0.62);
}

.page-contact .pc-channel > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 7px;
  padding: 22px 50px 20px 22px;
}

.page-contact .pc-channel > summary::-webkit-details-marker { display: none; }

.page-contact .pc-channel > summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 22px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 220ms var(--ease);
}

.page-contact .pc-channel[open] > summary::after { transform: rotate(45deg); }

.page-contact .pc-ch-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-contact .pc-ch-label {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-contact .pc-ch-value {
  font-family: var(--font-mono);
  font-size: clamp(13.5px, 1.5vw, 16px);
  line-height: 1.6;
  color: var(--cyan);
  word-break: break-word;
}

.page-contact .pc-channel--mail .pc-ch-value { color: var(--orange); }

.page-contact .pc-ch-hint {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.page-contact .pc-channel[open] .pc-ch-hint { color: var(--orange); }
.page-contact .pc-channel--mail[open] .pc-ch-hint { color: var(--cyan); }

.page-contact .pc-ch-body {
  padding: 16px 22px 22px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .pc-ch-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--silver);
}

.page-contact .pc-ch-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .pc-ch-list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--sage);
}

.page-contact .pc-ch-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1.5px;
  background: var(--cyan);
}

/* ---------- 邮件写法 ---------- */

.page-contact .pc-writing {
  background:
    linear-gradient(180deg, rgba(10, 26, 47, 0.85) 0%, var(--ink) 100%);
}

.page-contact .pc-writing-grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-contact .pc-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 15px;
}

.page-contact .pc-steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-contact .pc-step-n {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  border: 1px solid rgba(72, 240, 208, 0.35);
  border-radius: 3px 10px 3px 10px;
}

.page-contact .pc-template {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid rgba(110, 91, 232, 0.34);
  border-radius: 20px 4px 20px 4px;
  background: linear-gradient(152deg, rgba(42, 35, 80, 0.95) 0%, rgba(10, 26, 47, 0.96) 100%);
}

.page-contact .pc-template-cap {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(110, 91, 232, 1);
}

.page-contact .pc-code {
  margin: 0;
  padding: 16px 18px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  background: rgba(0, 0, 0, 0.3);
  border-left: 2px solid var(--cyan);
  border-radius: 2px 12px 2px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  color: var(--cream);
}

.page-contact .pc-code-comment {
  display: inline-block;
  color: var(--text-dim);
  letter-spacing: 0.08em;
}

.page-contact .pc-template-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--sage);
}

/* ---------- 四类问题 ---------- */

.page-contact .pc-route-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(24px, 3.5vw, 36px);
}

.page-contact .pc-route {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 4px 18px 4px 18px;
  background: rgba(18, 23, 26, 0.78);
  transition: transform 220ms var(--ease), border-color 220ms var(--ease), background-color 220ms var(--ease);
}

.page-contact .pc-route--data   { --pc-accent: var(--cyan); }
.page-contact .pc-route--roster { --pc-accent: var(--orange); }
.page-contact .pc-route--member { --pc-accent: var(--pc-violet); }
.page-contact .pc-route--fix    { --pc-accent: var(--pc-rose); }

.page-contact .pc-route:hover,
.page-contact .pc-route:focus-within {
  transform: translateY(-4px);
  border-color: var(--pc-accent);
  background: rgba(18, 23, 26, 0.94);
}

.page-contact .pc-route[open] {
  border-color: var(--pc-accent);
}

.page-contact .pc-route > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 8px;
  padding: 20px 46px 18px 20px;
}

.page-contact .pc-route > summary::-webkit-details-marker { display: none; }

.page-contact .pc-route > summary::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 18px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--pc-accent);
  transition: transform 220ms var(--ease);
}

.page-contact .pc-route[open] > summary::after { transform: rotate(45deg); }

.page-contact .pc-route-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pc-accent);
}

.page-contact .pc-route-name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-contact .pc-route-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

.page-contact .pc-route-body {
  padding: 0 20px 20px;
  border-top: 1px solid var(--line-soft);
  padding-top: 16px;
}

.page-contact .pc-route-need {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--pc-accent);
}

.page-contact .pc-route-body ul {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .pc-route-body li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--sage);
}

.page-contact .pc-route-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 1.5px;
  background: var(--pc-accent);
}

.page-contact .pc-routes-more {
  margin: clamp(22px, 3vw, 32px) 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--silver);
}

.page-contact .pc-routes-more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(72, 240, 208, 0.4);
  transition: border-color 200ms var(--ease);
}

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

/* ---------- 纠错 ---------- */

.page-contact .pc-feedback {
  background: linear-gradient(152deg, rgba(107, 30, 46, 0.55) 0%, rgba(18, 23, 26, 0.94) 64%);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-feedback-inner {
  max-width: 860px;
}

.page-contact .pc-feedback h2 + p {
  max-width: 60ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--silver);
}

.page-contact .pc-fix-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  max-width: 720px;
}

.page-contact .pc-fix-list li {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(201, 214, 210, 0.16);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--silver);
}

.page-contact .pc-fix-k {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .pc-fix-tail {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--sage);
}

.page-contact .pc-fix-tail a {
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 244, 239, 0.35);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .pc-fix-tail a:hover,
.page-contact .pc-fix-tail a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 到访与备案 ---------- */

.page-contact .pc-visit {
  background: linear-gradient(180deg, var(--ink) 0%, rgba(10, 26, 47, 0.92) 100%);
}

.page-contact .pc-visit-grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-contact .pc-visit-copy p {
  max-width: 56ch;
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--silver);
}

.page-contact .pc-visit-hint {
  padding-left: 14px;
  border-left: 2px solid rgba(255, 138, 61, 0.55);
  font-size: 13.5px !important;
  color: var(--sage) !important;
}

.page-contact .pc-visit-dl {
  margin: 0;
  padding: 6px 22px;
  border: 1px solid var(--line);
  border-radius: 4px 22px 4px 22px;
  background: rgba(10, 26, 47, 0.6);
}

.page-contact .pc-visit-dl > div {
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .pc-visit-dl > div:last-child {
  border-bottom: 0;
}

.page-contact .pc-visit-dl dt {
  margin-bottom: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-contact .pc-visit-dl dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--cream);
  word-break: break-word;
}

.page-contact .pc-banner {
  margin: clamp(34px, 6vw, 72px) 0 0;
  padding: 0;
}

.page-contact .pc-banner img {
  display: block;
  width: 100%;
  height: clamp(150px, 24vw, 280px);
  object-fit: cover;
  opacity: 0.72;
  filter: saturate(0.82) brightness(0.86);
  border-radius: 4px 24px 4px 24px;
}

.page-contact .pc-record {
  margin-top: clamp(28px, 4.5vw, 52px);
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .pc-record-line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cream);
}

.page-contact .pc-record-k {
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--text-dim);
}

.page-contact .pc-record-note {
  margin: 0;
  max-width: 66ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .pc-route-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .pc-channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .pc-hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }

  .page-contact .pc-visit-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.82fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-contact .pc-writing-grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    align-items: start;
  }
}

@media (min-width: 1220px) {
  .page-contact .pc-route-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .page-contact .pc-channel > summary {
    padding: 20px 46px 18px 20px;
  }

  .page-contact .pc-ch-body,
  .page-contact .pc-route-body {
    padding-left: 20px;
    padding-right: 20px;
  }

  .page-contact .pc-visit-dl {
    padding: 4px 16px;
  }

  .page-contact .pc-fix-list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 5px;
  }

  .page-contact .pc-code {
    font-size: 12px;
    line-height: 1.85;
  }

  .page-contact .pc-banner img {
    height: 150px;
    border-radius: 3px 16px 3px 16px;
  }
}