.page-contact {
  --pc-space: clamp(56px, 9vw, 104px);
  --pc-gap: clamp(22px, 4vw, 44px);
  background: var(--c-void);
  color: var(--c-paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(84px, 13vw, 128px) 0 clamp(44px, 7vw, 68px);
  background:
    linear-gradient(155deg, rgba(47, 224, 224, 0.09) 0%, rgba(6, 11, 24, 0) 46%),
    var(--c-void);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: -18%;
  right: -20%;
  width: min(560px, 80vw);
  aspect-ratio: 1 / 1;
  background: var(--grad-brand);
  opacity: 0.17;
  clip-path: polygon(30% 0, 100% 0, 100% 72%, 0 100%);
  transform: rotate(-8deg);
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--grad-brand);
  opacity: 0.8;
}

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

.page-contact .contact-crumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-mist);
}

.page-contact .contact-crumb a {
  color: var(--c-mist);
  text-decoration: none;
  border-bottom: 1px solid var(--c-steel);
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.page-contact .contact-crumb__sep {
  color: var(--c-steel);
}

.page-contact .contact-crumb [aria-current="page"] {
  color: var(--c-paper);
}

.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 20ch;
  font-size: clamp(34px, 7.4vw, 62px);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -0.03em;
}

.page-contact .contact-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 2.5vw, 18px);
  line-height: 1.75;
  color: var(--c-mist);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

/* ---------- 通用区块 ---------- */
.page-contact .contact-section {
  padding: var(--pc-space) 0;
}

.page-contact .contact-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-contact h2 {
  margin: 12px 0 0;
  font-size: clamp(24px, 4.2vw, 36px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  max-width: 26ch;
}

/* ---------- 联系渠道 ---------- */
.page-contact .contact-channels {
  padding-top: clamp(44px, 7vw, 76px);
}

.page-contact .contact-channels__shell {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .contact-cards {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .contact-card {
  position: relative;
  padding: 22px 24px 24px 28px;
  border: 2px solid var(--c-steel);
  background: var(--c-deep);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--c-steel);
  transition: background 0.25s ease;
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--c-orange);
  box-shadow: var(--shadow-block);
  transform: translate(-2px, -2px);
}

.page-contact .contact-card:hover::before,
.page-contact .contact-card:focus-within::before {
  background: var(--c-orange);
}

.page-contact .contact-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-contact .contact-card__icon {
  display: inline-flex;
  flex: none;
  width: 32px;
  height: 32px;
  color: var(--c-cyan);
}

.page-contact .contact-card__icon svg {
  width: 100%;
  height: 100%;
}

.page-contact .contact-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-contact .contact-card__value {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.6vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-paper);
  text-decoration: none;
  word-break: break-word;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

.page-contact .contact-card__value--plain {
  border-bottom: none;
}

.page-contact .contact-card__use {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-contact .contact-channels__aside {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-contact .contact-iconfig {
  margin: 0;
  border: 2px solid var(--c-steel);
  background: var(--c-deep);
  overflow: hidden;
}

.page-contact .contact-iconfig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-side-note {
  margin: 0;
  padding: 18px 20px;
  border-left: 3px solid var(--c-violet);
  background: rgba(139, 92, 246, 0.09);
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 中段横幅 ---------- */
.page-contact .contact-banner {
  position: relative;
  margin: 0;
  border-top: 2px solid var(--c-steel);
  border-bottom: 2px solid var(--c-steel);
  overflow: hidden;
  background: var(--c-deep);
}

.page-contact .contact-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-contact .contact-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(6, 11, 24, 0.88) 0%, rgba(47, 224, 224, 0.22) 52%, rgba(139, 92, 246, 0.32) 100%);
  pointer-events: none;
}

.page-contact .contact-banner figcaption {
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 20px;
  padding: clamp(18px, 4vw, 36px) var(--gutter);
}

.page-contact .contact-banner__tag {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  border: 1px solid rgba(47, 224, 224, 0.5);
  padding: 4px 10px;
}

.page-contact .contact-banner__text {
  font-size: clamp(15px, 2.6vw, 19px);
  font-weight: 700;
  color: var(--c-paper);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .contact-prep__shell {
  display: grid;
  gap: var(--pc-gap);
}

.page-contact .prep-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 18px;
  padding: 24px 0;
  border-top: 1px solid var(--c-steel);
}

.page-contact .prep-item:last-child {
  border-bottom: 1px solid var(--c-steel);
}

.page-contact .prep-num {
  grid-row: span 2;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--c-violet);
}

.page-contact .prep-title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.35;
}

.page-contact .prep-text {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-contact .contact-privacy-note {
  margin: 24px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-mist);
}

.page-contact .contact-privacy-note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--c-cyan);
}

.page-contact .contact-privacy-note a:hover,
.page-contact .contact-privacy-note a:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* ---------- 合作侧栏 ---------- */
.page-contact .contact-partner {
  padding: clamp(22px, 3.6vw, 32px);
  border: 2px solid var(--c-steel);
  background: linear-gradient(160deg, rgba(139, 92, 246, 0.16) 0%, rgba(13, 23, 48, 0.94) 62%);
  box-shadow: var(--shadow-steel);
  align-self: start;
}

.page-contact .contact-partner__title {
  margin: 12px 0 0;
  font-size: clamp(21px, 3vw, 26px);
  font-weight: 800;
  line-height: 1.2;
}

.page-contact .contact-partner__text {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-contact .partner-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

/* ---------- 服务时段 ---------- */
.page-contact .contact-hours {
  background: var(--grad-band);
  border-top: 1px solid var(--c-steel);
  border-bottom: 1px solid var(--c-steel);
  padding: clamp(46px, 7vw, 80px) 0;
}

.page-contact .hours-grid {
  margin-top: 30px;
  display: grid;
  gap: 0;
}

.page-contact .hour-row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid rgba(47, 224, 224, 0.18);
}

.page-contact .hour-key {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-contact .hour-val {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-paper);
}

/* ---------- 咨询主题 ---------- */
.page-contact .topic-grid {
  margin-top: 30px;
  display: grid;
  gap: 14px;
}

.page-contact .topic {
  border: 2px solid var(--c-steel);
  background: var(--c-deep);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.page-contact .topic:hover {
  border-color: rgba(47, 224, 224, 0.6);
}

.page-contact .topic[open] {
  border-color: var(--c-cyan);
  box-shadow: var(--shadow-cyan);
}

.page-contact .topic > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

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

.page-contact .topic > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--c-orange);
}

.page-contact .topic[open] > summary::after {
  content: "–";
}

.page-contact .topic__idx {
  flex: none;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-violet);
}

.page-contact .topic__body {
  padding: 0 20px 22px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--c-mist);
}

.page-contact .topic__body p {
  margin: 0 0 14px;
}

.page-contact .topic__link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--c-cyan);
  padding-bottom: 2px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .topic__link:hover,
.page-contact .topic__link:focus-visible {
  color: var(--c-orange);
  border-bottom-color: var(--c-orange);
}

/* ---------- 回复节奏 ---------- */
.page-contact .cadence-list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border: 1px solid var(--c-steel);
  background: var(--c-steel);
  display: grid;
  gap: 1px;
}

.page-contact .cadence-item {
  background: var(--c-void);
  padding: 20px 22px;
  display: grid;
  gap: 8px;
}

.page-contact .cadence-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--c-violet);
}

.page-contact .cadence-val {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-paper);
}

.page-contact .contact-cadence__note {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-mist);
  padding-left: 18px;
  border-left: 3px solid var(--c-mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-banner img {
    height: clamp(260px, 32vw, 400px);
    aspect-ratio: auto;
  }

  .page-contact .hours-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-contact .cadence-item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
    padding: 22px 26px;
  }
}

@media (min-width: 940px) {
  .page-contact .contact-channels__shell {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .contact-prep__shell {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 18px;
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero h1 {
    max-width: 16ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .topic,
  .page-contact .contact-card__value {
    transition: none;
  }

  .page-contact .contact-card:hover,
  .page-contact .contact-card:focus-within {
    transform: none;
  }
}