.page-contact {
  --pc-gap: clamp(16px, 3vw, 28px);
  --pc-pad: clamp(20px, 3.2vw, 32px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .pc-hero {
  position: relative;
  padding: clamp(26px, 4vw, 42px) 0 clamp(46px, 7vw, 84px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-contact .pc-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-contact .pc-hero-bg img {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.16;
}
.page-contact .pc-hero-veil {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(110% 80% at 6% -12%, rgba(53, 224, 212, 0.2), transparent 55%),
    radial-gradient(80% 62% at 94% 4%, rgba(127, 214, 255, 0.13), transparent 60%),
    linear-gradient(180deg, rgba(6, 35, 29, 0.5) 0%, rgba(6, 35, 29, 0.9) 56%, var(--ink) 100%);
}
.page-contact .pc-hero .container {
  position: relative;
  z-index: 1;
}

.page-contact .pc-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(18px, 3vw, 28px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--muted);
}
.page-contact .pc-hero .crumbs a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease);
}
.page-contact .pc-hero .crumbs a:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-contact .pc-crumb-sep {
  color: var(--line);
}

.page-contact .pc-hero .index-tag {
  display: block;
  margin: 0 0 14px;
}
.page-contact .pc-hero h1 {
  margin: 0 0 20px;
  max-width: 17ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-contact .pc-hero .lead {
  max-width: 60ch;
  margin: 0;
  font-size: clamp(15px, 1.65vw, 17px);
  line-height: 1.85;
  color: #bcd2cc;
}
.page-contact .pc-hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding: 10px 18px 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(15, 18, 20, 0.72);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--muted);
}
.page-contact .pc-dot {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 224, 212, 0.16);
}

/* ---------- 章节头 ---------- */
.page-contact .pc-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(22px, 3.4vw, 34px);
}
.page-contact .pc-sec-head h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-contact .pc-sec-sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 事项切换 ---------- */
.page-contact .pc-switch {
  padding: clamp(38px, 6vw, 68px) 0;
}
.page-contact .pc-tabbar {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.page-contact .pc-tabbar::-webkit-scrollbar {
  display: none;
}
.page-contact .pc-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--charcoal);
  color: var(--paper);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease),
    color 0.18s var(--ease), transform 0.18s var(--ease);
}
.page-contact .pc-tab:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}
.page-contact .pc-tab .pc-tab-index {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.page-contact .pc-tab[aria-selected="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-on-cyan);
}
.page-contact .pc-tab[aria-selected="true"] .pc-tab-index {
  color: rgba(4, 35, 31, 0.62);
}

.page-contact .pc-panel {
  display: grid;
  gap: var(--pc-gap);
  margin-top: clamp(20px, 3vw, 30px);
  padding: var(--pc-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(158deg, rgba(14, 53, 44, 0.9), rgba(15, 18, 20, 0.94));
  animation: pc-fade 0.26s var(--ease) both;
}
.page-contact .pc-panel[hidden] {
  display: none;
}
@keyframes pc-fade {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-contact .pc-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}
.page-contact .pc-kicker::before {
  content: "— ";
  color: var(--line);
}

.page-contact .pc-fit {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-contact .pc-fit li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}
.page-contact .pc-fit li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .pc-panel-side {
  padding-top: clamp(18px, 2.6vw, 22px);
  border-top: 1px solid var(--line);
}
.page-contact .pc-side-row {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}
.page-contact .pc-side-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  margin-bottom: 2px;
}
.page-contact .pc-side-val {
  word-break: break-all;
}
.page-contact .pc-side-val--num {
  color: var(--lime);
  font-weight: 700;
}
.page-contact .pc-side-note {
  margin: 14px 0 16px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 客服邮箱与电话 ---------- */
.page-contact .pc-reach {
  padding: clamp(38px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 53, 44, 0.5), rgba(6, 35, 29, 0));
}
.page-contact .pc-reach-grid {
  display: grid;
  gap: var(--pc-gap);
}
.page-contact .pc-reach-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--pc-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(15, 18, 20, 0.86), rgba(15, 18, 20, 0.62));
  transition: border-color 0.18s var(--ease), transform 0.18s var(--ease);
}
.page-contact .pc-reach-card:hover {
  border-color: var(--cyan);
  transform: translateY(-2px);
}
.page-contact .pc-reach-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.page-contact .pc-reach-value {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(18px, 2.7vw, 24px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--paper);
  word-break: break-all;
}
.page-contact .pc-reach-value--num {
  color: var(--lime);
  letter-spacing: 0.02em;
}
.page-contact .pc-reach-note {
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 44ch;
}

/* ---------- 响应节奏 ---------- */
.page-contact .pc-rhythm {
  padding: clamp(38px, 6vw, 68px) 0;
}
.page-contact .pc-rhythm-top {
  display: grid;
  gap: clamp(22px, 3.4vw, 38px);
}
.page-contact .pc-rhythm-copy h2 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-contact .pc-rhythm-copy p {
  margin: 0 0 14px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}
.page-contact .pc-rhythm-fig {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--charcoal);
}
.page-contact .pc-rhythm-fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-contact .pc-rhythm-fig .media-caption {
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.03em;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.page-contact .pc-scale {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.page-contact .pc-tick {
  position: relative;
  padding: 0 0 20px 24px;
  border-left: 1px solid var(--line);
}
.page-contact .pc-tick::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 224, 212, 0.14);
  transition: box-shadow 0.18s var(--ease);
}
.page-contact .pc-tick:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}
.page-contact .pc-tick:hover::before {
  box-shadow: 0 0 0 7px rgba(53, 224, 212, 0.2);
}
.page-contact .pc-tick-time {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}
.page-contact .pc-tick-note {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 反馈写作清单 ---------- */
.page-contact .pc-checklist-sec {
  padding: clamp(38px, 6vw, 68px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(14, 53, 44, 0.42), rgba(6, 35, 29, 0));
}
.page-contact .pc-check-grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 42px);
}
.page-contact .pc-check-copy h2 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--paper);
}
.page-contact .pc-check-copy p {
  margin: 0 0 14px;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}
.page-contact .pc-check-tip a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 224, 212, 0.4);
  transition: border-color 0.16s var(--ease);
}
.page-contact .pc-check-tip a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .pc-checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-contact .pc-check-item {
  display: flex;
  gap: 13px;
  align-items: flex-start;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(15, 18, 20, 0.62);
  cursor: pointer;
  transition: border-color 0.18s var(--ease), background 0.18s var(--ease);
}
.page-contact .pc-check-item:hover {
  border-color: var(--cyan);
}
.page-contact .pc-check-box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--cyan);
  cursor: pointer;
}
.page-contact .pc-check-text {
  font-size: 14px;
  line-height: 1.68;
  color: var(--paper);
}
.page-contact .pc-check-text strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 15px;
  color: var(--paper);
}
.page-contact .pc-check-box:checked ~ .pc-check-text {
  color: var(--muted);
}
.page-contact .pc-check-box:checked ~ .pc-check-text strong {
  color: var(--muted);
}
.page-contact .pc-check-item:has(.pc-check-box:checked) {
  border-color: rgba(53, 224, 212, 0.55);
  background: rgba(53, 224, 212, 0.07);
}

/* ---------- 收尾 ---------- */
.page-contact .pc-tail {
  padding: clamp(30px, 5vw, 52px) 0 clamp(44px, 7vw, 72px);
}
.page-contact .pc-tail-inner {
  display: grid;
  gap: 20px;
  padding: var(--pc-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: linear-gradient(140deg, rgba(14, 53, 44, 0.82), rgba(15, 18, 20, 0.9));
}
.page-contact .pc-tail-text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper);
}
.page-contact .pc-tail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 620px) {
  .page-contact .pc-reach-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .pc-reach-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .pc-panel {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: start;
  }
  .page-contact .pc-panel-side {
    padding-top: 0;
    padding-left: var(--pc-gap);
    border-top: 0;
    border-left: 1px solid var(--line);
  }
  .page-contact .pc-reach-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .pc-reach-card:last-child {
    grid-column: auto;
  }
  .page-contact .pc-rhythm-top {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: center;
  }
  .page-contact .pc-scale {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
  }
  .page-contact .pc-tick {
    padding: 0;
    border-left: 0;
  }
  .page-contact .pc-tick::before {
    left: 0;
    top: -31px;
  }
  .page-contact .pc-tick:last-child {
    border-left-color: transparent;
  }
  .page-contact .pc-check-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }
  .page-contact .pc-tail-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 28px;
  }
}

@media (min-width: 1160px) {
  .page-contact .pc-panel {
    padding: clamp(28px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pc-panel {
    animation: none;
  }
  .page-contact .pc-tab:hover,
  .page-contact .pc-reach-card:hover {
    transform: none;
  }
}