.page-contact {
  --cx-maxcopy: 58ch;
  --cx-glow: radial-gradient(115% 78% at 88% 4%, rgba(56, 245, 165, 0.15), transparent 62%);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.5rem) clamp(2.25rem, 5vw, 3.5rem);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -18% -12% auto auto;
  width: min(720px, 78vw);
  height: min(520px, 62vw);
  background: var(--cx-glow);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  grid-template-columns: 1fr;
}

.page-contact .contact-hero__copy .crumbs {
  margin-bottom: 1.25rem;
}

.page-contact .contact-hero h1 {
  margin: 0.6rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.8vw, 3.8rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .hero-mark {
  color: var(--pulse);
  font-family: var(--font-mono);
  letter-spacing: 0.01em;
}

.page-contact .contact-hero__lede {
  margin-top: 1.15rem;
  max-width: 46ch;
  color: var(--mist);
  font-size: clamp(0.98rem, 1.6vw, 1.06rem);
}

.page-contact .contact-hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin: 1.5rem 0 0;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--mist);
}

.page-contact .pulse-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pulse);
  animation: cx-pulse 2.4s var(--ease) infinite;
}

@keyframes cx-pulse {
  0% { box-shadow: 0 0 0 0 rgba(56, 245, 165, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(56, 245, 165, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 245, 165, 0); }
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 1000 / 600;
  object-fit: cover;
}

/* ---------- 来意入口 ---------- */
.page-contact .contact-intent {
  border-top: 1px solid var(--line);
  padding-block: clamp(2.5rem, 6vw, 4rem);
}

.page-contact .contact-intent__head {
  display: grid;
  gap: 0.75rem;
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 3.5vw, 2.25rem);
}

.page-contact .contact-intent__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.2vw, 2.3rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-intent__head p:last-child {
  margin: 0;
  color: var(--fog);
  font-size: 0.98rem;
  line-height: 1.75;
}

.page-contact .intent-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .intent {
  position: relative;
  background: var(--ink-800);
}

.page-contact .intent::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--pulse);
  transition: width 0.25s var(--ease);
}

.page-contact .intent:hover::before,
.page-contact .intent[open]::before {
  width: 3px;
}

.page-contact .intent__summary {
  position: relative;
  display: grid;
  gap: 0.4rem;
  padding: 1.35rem 2.6rem 1.25rem 1.5rem;
  cursor: pointer;
  list-style: none;
}

.page-contact .intent__summary::-webkit-details-marker {
  display: none;
}

.page-contact .intent__summary::after {
  content: "+";
  position: absolute;
  top: 1.15rem;
  right: 1.15rem;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--fog);
  transition: color 0.2s var(--ease);
}

.page-contact .intent[open] .intent__summary::after {
  content: "–";
  color: var(--pulse);
}

.page-contact .intent__tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--pulse);
}

.page-contact .intent__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .intent__hint {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--fog);
}

.page-contact .intent__body {
  padding: 0 1.5rem 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

.page-contact .intent__body .btn {
  margin-top: 1.15rem;
}

.page-contact .intent__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-contact .intent__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-contact .intent__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 1px;
  background: var(--pulse-dim);
}

/* ---------- 章节通用 ---------- */
.page-contact .contact-chapter {
  border-top: 1px solid var(--line);
  padding-block: clamp(2.75rem, 6.5vw, 5rem);
}

.page-contact .contact-chapter__head {
  display: grid;
  gap: 0.85rem;
  max-width: 64ch;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.page-contact .contact-chapter__label {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--pulse);
}

.page-contact .contact-chapter__label::before {
  content: "";
  width: 26px;
  height: 1px;
  background: currentColor;
}

.page-contact .contact-chapter__num {
  color: var(--fog);
}

.page-contact .contact-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .contact-chapter__lead {
  margin: 0;
  max-width: var(--cx-maxcopy);
  font-size: 1rem;
  line-height: 1.78;
  color: var(--fog);
}

.page-contact .contact-chapter__body--split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.page-contact .block-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--paper);
}

.page-contact .block-title--spaced {
  margin-top: clamp(1.75rem, 3.5vw, 2.5rem);
}

/* ---------- 清单与步骤 ---------- */
.page-contact .kx-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.page-contact .kx-list li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .kx-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 8px;
  height: 1px;
  background: var(--pulse);
}

.page-contact .step-line {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: cx-step;
  display: grid;
  gap: 1.1rem;
}

.page-contact .step-line li {
  counter-increment: cx-step;
  display: grid;
  grid-template-columns: 2.2rem 1fr;
  gap: 0.85rem;
  align-items: start;
}

.page-contact .step-line li::before {
  content: counter(cx-step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--pulse);
  padding-top: 0.28em;
  border-top: 1px solid var(--line);
}

.page-contact .step-line li span {
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-aside {
  border: 1px solid var(--line);
  border-left: 3px solid var(--pulse-dim);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: 1.1rem 1.25rem;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 客服渠道 ---------- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .channel {
  border: 1px solid var(--line);
  border-left: 3px solid var(--pulse);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: clamp(1.2rem, 2.5vw, 1.6rem);
}

.page-contact .channel__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-contact .channel__val {
  margin: 0.6rem 0 0;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.3rem);
  letter-spacing: 0.02em;
  color: var(--pulse);
  word-break: break-word;
}

.page-contact .channel__note {
  margin: 0.9rem 0 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .mail-tips {
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-900);
  padding: clamp(1.15rem, 2.5vw, 1.6rem);
  display: grid;
  gap: 0.85rem;
}

.page-contact .mail-tips__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--paper);
}

.page-contact .mail-tips__sample {
  margin: 0;
  padding: 0.7rem 0.9rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.03em;
  color: var(--volt);
  overflow-wrap: anywhere;
}

/* ---------- 合作对接 ---------- */
.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.page-contact .partner {
  border: 1px solid var(--line);
  border-top: 3px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  padding: clamp(1.2rem, 2.6vw, 1.8rem);
}

.page-contact .partner--volt {
  border-top-color: var(--volt);
}

.page-contact .partner__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-contact .partner__title {
  margin: 0.55rem 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.16rem;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .partner__lead {
  margin: 0.75rem 0 1.25rem;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--fog);
}

.page-contact .chapter-link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
}

/* ---------- 地址 ---------- */
.page-contact .address-card {
  display: grid;
  grid-template-columns: 1fr;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .address-card__body {
  padding: clamp(1.25rem, 3vw, 2rem);
}

.page-contact .address-card__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--fog);
}

.page-contact .address-line {
  margin: 0.7rem 0 1.4rem;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.2vw, 1.18rem);
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .address-card__figure {
  margin: 0;
}

.page-contact .address-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 900 / 600;
  object-fit: cover;
}

/* ---------- 提交前提示 ---------- */
.page-contact .tips-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .tip {
  background: var(--ink-900);
  padding: 1.2rem 1.35rem;
}

.page-contact .tip__key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--pulse-dim);
}

.page-contact .tip__text {
  margin: 0.6rem 0 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 收束带 ---------- */
.page-contact .contact-close {
  border-top: 1px solid var(--line);
  background: var(--ink-800);
  padding-block: clamp(1.75rem, 4vw, 2.6rem);
}

.page-contact .update-band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-contact .update-band__item {
  margin: 0;
  padding: 0.9rem 1rem;
  background: var(--ink-800);
  display: grid;
  gap: 0.35rem;
}

.page-contact .update-band__time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  color: var(--pulse-dim);
}

.page-contact .update-band__text {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-close__legal {
  margin: 1.1rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--fog);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .tips-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .update-band {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .page-contact .intent-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .address-card {
    grid-template-columns: 5fr 6fr;
    align-items: stretch;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }
}

@media (min-width: 880px) {
  .page-contact .contact-chapter__body--split {
    grid-template-columns: 8fr 4fr;
    align-items: start;
  }

  .page-contact .partner-grid {
    grid-template-columns: 7fr 5fr;
  }
}

@media (min-width: 1024px) {
  .page-contact .update-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .pulse-dot {
    animation: none;
  }

  .page-contact .intent::before,
  .page-contact .intent__summary::after {
    transition: none;
  }
}