.page-contact {
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-contact .pc-anchor {
  display: block;
  height: 0;
  scroll-margin-top: calc(var(--header-h) + 12px);
}

.page-contact .pc-band {
  padding-block: clamp(44px, 6.5vw, 92px);
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(48px, 7vw, 96px);
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(760px 480px at 84% 4%, rgba(19, 90, 140, 0.32), transparent 68%),
    radial-gradient(620px 420px at 0% 96%, rgba(79, 184, 255, 0.10), transparent 72%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(169, 179, 190, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(169, 179, 190, 0.07) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.32) 64%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.32) 64%, transparent 100%);
  pointer-events: none;
}

.page-contact .contact-hero > .container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero .crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

.page-contact .hero-title {
  font-family: var(--font-display);
  font-size: clamp(38px, 6.6vw, 84px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--c-white);
  margin: 14px 0 0;
}

.page-contact .hero-lede {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
  max-width: 40ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--c-silver);
}

.page-contact .mail-block {
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--c-line);
}

.page-contact .mail-label {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--c-dim);
}

.page-contact .mail-address {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 4.3vw, 38px);
  font-weight: 600;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--c-white);
  text-shadow: 0 0 46px rgba(79, 184, 255, 0.28);
  word-break: break-all;
}

.page-contact .mail-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-top: clamp(16px, 2.2vw, 22px);
}

.page-contact .copy-state {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-dim);
}

.page-contact .mail-hours {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-silver);
}

.page-contact .mail-hours .mono {
  font-family: var(--font-mono);
  color: var(--c-white);
  letter-spacing: 0.05em;
}

.page-contact .hero-media {
  margin: 0;
  border: 1px solid var(--c-line);
}

.page-contact .hero-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

/* ---------- 通用标题组 ---------- */

.page-contact .band-head {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-contact .band-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(27px, 3.6vw, 46px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-contact .band-sub {
  margin: 16px 0 0;
  max-width: 40ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-silver);
}

/* ---------- 渠道 ---------- */

.page-contact .channel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .channel {
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .channel-k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-blue);
}

.page-contact .channel-v {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-white);
  overflow-wrap: anywhere;
}

.page-contact .channel-v.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.page-contact .channel-d {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

/* ---------- 自检清单 ---------- */

.page-contact .split {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-contact .check-tip {
  margin: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-dim);
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
}

.page-contact .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-contact .check-item {
  position: relative;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .check-box {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .check-label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 22px 4px;
  cursor: pointer;
  border-radius: 2px;
  transition: background-color 0.22s var(--ease);
}

.page-contact .check-label:hover {
  background: rgba(79, 184, 255, 0.05);
}

.page-contact .check-mark {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--c-line);
  border-radius: 3px;
  background: var(--c-garage);
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .check-box:checked + .check-label .check-mark {
  background: var(--c-blue);
  border-color: var(--c-blue);
}

.page-contact .check-box:checked + .check-label .check-mark::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid #04121c;
  border-bottom: 2px solid #04121c;
  transform: rotate(42deg);
}

.page-contact .check-box:checked + .check-label .check-name {
  color: var(--c-blue);
}

.page-contact .check-box:focus-visible + .check-label {
  outline: 2px solid var(--c-blue);
  outline-offset: 2px;
}

.page-contact .check-body {
  display: block;
  min-width: 0;
}

.page-contact .check-name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-white);
  transition: color 0.2s var(--ease);
}

.page-contact .check-text {
  display: block;
  margin-top: 6px;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-silver);
}

/* ---------- 处理流程 ---------- */

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

.page-contact .flow-step {
  position: relative;
  padding: 0 0 30px 32px;
  border-left: 1px solid var(--c-line);
}

.page-contact .flow-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .flow-step::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-blue);
  box-shadow: 0 0 0 3px rgba(79, 184, 255, 0.14);
}

.page-contact .flow-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-dim);
}

.page-contact .flow-title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--c-white);
}

.page-contact .flow-text {
  margin: 8px 0 0;
  max-width: 40ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-silver);
}

/* ---------- 紧急自查 ---------- */

.page-contact .urgent-box {
  position: relative;
  padding: clamp(24px, 4vw, 46px);
  background: var(--c-carbon);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-orange);
  overflow: hidden;
}

.page-contact .urgent-box::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 43, 0.14), transparent 68%);
  pointer-events: none;
}

.page-contact .urgent-eyebrow {
  color: var(--c-orange);
}

.page-contact .urgent-title {
  position: relative;
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--c-white);
  max-width: 24ch;
}

.page-contact .urgent-text {
  position: relative;
  margin: 16px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-silver);
}

.page-contact .urgent-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* ---------- 纠错与合作 ---------- */

.page-contact .feedback {
  position: relative;
  overflow: hidden;
  background: var(--c-carbon);
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
}

.page-contact .feedback-bg {
  position: absolute;
  inset: 0;
  opacity: 0.2;
}

.page-contact .feedback-bg img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-contact .feedback::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 7, 10, 0.84), rgba(5, 7, 10, 0.95));
  pointer-events: none;
}

.page-contact .feedback-inner {
  position: relative;
  z-index: 1;
}

.page-contact .topic-list {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  max-width: 780px;
  border-top: 1px solid var(--c-line);
}

.page-contact .topic-item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-contact .topic-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--c-blue);
}

.page-contact .topic-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-silver);
}

.page-contact .feedback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 32px);
}

/* ---------- 页尾提示 ---------- */

.page-contact .pc-tail {
  padding-block: clamp(28px, 4vw, 46px);
}

.page-contact .pc-tail-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px 32px;
}

.page-contact .pc-tail-text {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-dim);
}

.page-contact .pc-top {
  display: inline-block;
  padding: 12px 2px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-blue);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-contact .pc-top:hover {
  border-bottom-color: var(--c-blue);
}

.page-contact a:focus-visible,
.page-contact button:focus-visible {
  outline: 2px solid var(--c-blue);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .topic-item {
    grid-template-columns: 160px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .channel {
    grid-template-columns: 168px minmax(0, 1.05fr) minmax(0, 1.35fr);
    align-items: baseline;
    gap: 28px;
    padding: 26px 0;
  }

  .page-contact .channel-d {
    margin: 0;
  }

  .page-contact .split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(40px, 6vw, 88px);
    align-items: start;
  }

  .page-contact .flow {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(24px, 3.2vw, 44px);
  }

  .page-contact .flow-step {
    padding: 34px 0 0;
    border-left: 0;
    border-top: 1px solid var(--c-line);
  }

  .page-contact .flow-step:last-child {
    border-top-color: var(--c-line);
  }

  .page-contact .flow-step::before {
    left: 0;
    top: -4.5px;
  }
}

@media (min-width: 960px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: clamp(40px, 5vw, 80px);
    align-items: start;
  }

  .page-contact .hero-side {
    padding-top: 8px;
  }
}

@media (max-width: 400px) {
  .page-contact .mail-address {
    font-size: 14px;
  }
}