.page-contact {
  background: var(--hth-night);
  color: var(--hth-on-dark);
  padding-top: var(--hth-header-h);
  overflow-x: hidden;
}

.page-contact .hth-display,
.page-contact .hth-title {
  letter-spacing: -.02em;
}

/* ---------- 首屏声明 ---------- */
.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(36px, 5vw, 68px) 0 clamp(48px, 7vw, 92px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: -34% -20% auto -20%;
  height: 150%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 62% at 14% 14%, rgba(30, 78, 140, .62), transparent 66%),
    radial-gradient(46% 52% at 88% 24%, rgba(40, 240, 168, .13), transparent 72%);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
  align-items: center;
}

.page-contact .hth-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  font-size: 13px;
}

.page-contact .hth-crumbs a {
  color: var(--hth-on-dark-dim);
  text-decoration: none;
  transition: color .25s var(--hth-ease);
}

.page-contact .hth-crumbs a:hover {
  color: var(--hth-neon);
}

.page-contact .hth-crumbs li[aria-current] {
  color: var(--hth-on-dark);
}

.page-contact .hth-crumbs li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--hth-line-strong);
}

.page-contact .contact-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 4.6vw, 58px);
  line-height: 1.14;
  font-weight: 800;
  color: #fff;
  max-width: 20ch;
}

.page-contact .contact-hero__lede {
  margin: 22px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-hero__hours {
  margin: 26px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--hth-line);
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-hero__hours .hth-num {
  margin-right: 10px;
  font-weight: 600;
  color: var(--hth-neon);
}

.page-contact .contact-hero__figure {
  margin: 0;
  border: 1px solid var(--hth-line-strong);
  background: var(--hth-stand);
}

.page-contact .contact-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 三张联系卡 ---------- */
.page-contact .contact-channels {
  padding: 0 0 clamp(56px, 8vw, 104px);
}

.page-contact .contact-channels__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px 28px;
  padding-bottom: 18px;
  margin-bottom: clamp(22px, 3vw, 34px);
  border-bottom: 1px solid var(--hth-line);
}

.page-contact .contact-channels__head .hth-title {
  margin: 0;
  font-size: clamp(22px, 2.6vw, 32px);
  color: #fff;
}

.page-contact .contact-channels__head .hth-note {
  margin: 0;
  font-size: 14px;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-channels__grid {
  display: grid;
  gap: 14px;
}

.page-contact .contact-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(22px, 2.6vw, 30px) clamp(20px, 2.4vw, 28px) clamp(26px, 3vw, 34px);
  border: 1px solid var(--hth-line-strong);
  background: linear-gradient(158deg, rgba(15, 44, 82, .92) 0%, rgba(6, 21, 43, .78) 100%);
  transition: border-color .3s var(--hth-ease), transform .3s var(--hth-ease);
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  opacity: 0;
  background: linear-gradient(90deg, var(--hth-neon), transparent 82%);
  transition: opacity .3s var(--hth-ease);
}

.page-contact .contact-card:hover,
.page-contact .contact-card:focus-within {
  border-color: var(--hth-orange);
  transform: translateY(-4px);
}

.page-contact .contact-card:hover::after,
.page-contact .contact-card:focus-within::after {
  opacity: 1;
}

.page-contact .contact-card__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hth-neon);
}

.page-contact .contact-card .hth-card-title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: #fff;
}

.page-contact .contact-card__value {
  margin: 0;
  font-family: var(--hth-mono);
  font-size: clamp(14px, 1.5vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--hth-mist);
  overflow-wrap: anywhere;
}

.page-contact .contact-card__value--text {
  font-family: var(--hth-sans);
  letter-spacing: .01em;
}

.page-contact .contact-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--hth-on-dark-dim);
}

/* ---------- 受理范围（浅色画册页） ---------- */
.page-contact .contact-scope {
  background: var(--hth-paper);
  color: var(--hth-ink);
  padding: clamp(52px, 7.5vw, 100px) 0;
}

.page-contact .contact-scope__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-contact .contact-scope__head .hth-eyebrow {
  color: var(--hth-note);
}

.page-contact .contact-scope__head .hth-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3vw, 36px);
  color: var(--hth-ink);
}

.page-contact .contact-scope__body p {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
  color: var(--hth-ink);
}

.page-contact .contact-scope__body p:last-child {
  margin-bottom: 0;
}

.page-contact .contact-scope__aside {
  margin-top: 26px !important;
  padding-top: 18px;
  border-top: 1px solid var(--hth-grid);
  font-size: 14px;
  color: var(--hth-note);
}

.page-contact .contact-scope__aside a {
  color: var(--hth-touch);
  text-underline-offset: 3px;
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-coop {
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-contact .contact-coop__head {
  margin-bottom: clamp(22px, 3.5vw, 40px);
}

.page-contact .contact-coop__head .hth-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3vw, 36px);
  color: #fff;
}

.page-contact .contact-coop__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-contact .contact-coop__item {
  display: grid;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 28px) 0;
  border-top: 1px solid var(--hth-line);
}

.page-contact .contact-coop__item:last-child {
  border-bottom: 1px solid var(--hth-line);
}

.page-contact .contact-coop__no {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hth-neon);
}

.page-contact .contact-coop__item .hth-card-title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}

.page-contact .contact-coop__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-coop__desc a {
  color: var(--hth-neon);
  text-underline-offset: 3px;
}

.page-contact .contact-coop__aside {
  align-self: start;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--hth-line-strong);
  background: rgba(15, 44, 82, .5);
}

.page-contact .contact-coop__aside-title {
  margin: 0 0 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--hth-mist);
}

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

.page-contact .contact-coop__aside li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-coop__aside li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 1px;
  background: var(--hth-neon);
}

/* ---------- 反馈三步 ---------- */
.page-contact .contact-feedback {
  background: var(--hth-stand);
  border-top: 1px solid var(--hth-line);
  padding: clamp(56px, 8vw, 104px) 0;
}

.page-contact .contact-feedback__head {
  max-width: 720px;
  margin-bottom: clamp(28px, 4vw, 46px);
}

.page-contact .contact-feedback__head .hth-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3vw, 36px);
  color: #fff;
}

.page-contact .contact-feedback__lede {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.82;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-feedback__grid {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-feedback__steps .hth-steps__nav {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.page-contact .contact-feedback__steps .hth-steps__btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--hth-line-strong);
  background: rgba(6, 21, 43, .5);
  color: var(--hth-on-dark-dim);
  font: inherit;
  font-size: 14px;
  text-align: left;
  cursor: pointer;
  transition: border-color .25s var(--hth-ease), color .25s var(--hth-ease), background .25s var(--hth-ease);
}

.page-contact .contact-feedback__steps .hth-steps__btn:hover {
  color: var(--hth-on-dark);
  border-color: var(--hth-mist);
}

.page-contact .contact-feedback__steps .hth-steps__btn:focus-visible {
  outline: 2px solid var(--hth-orange);
  outline-offset: 2px;
}

.page-contact .contact-feedback__steps .hth-steps__btn[aria-selected="true"] {
  border-color: var(--hth-neon);
  background: rgba(40, 240, 168, .1);
  color: #fff;
}

.page-contact .contact-feedback__steps .hth-steps__no {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--hth-neon);
}

.page-contact .contact-feedback__steps .hth-steps__panel {
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid var(--hth-line);
  border-left: 2px solid var(--hth-neon);
  background: rgba(6, 21, 43, .62);
  font-size: 15px;
  line-height: 1.85;
  color: var(--hth-on-dark);
}

.page-contact .contact-feedback__steps .hth-steps__panel p {
  margin: 0;
}

.page-contact .contact-feedback__steps .hth-steps__panel[hidden] {
  display: none;
}

.page-contact .contact-feedback__figure {
  margin: 0;
  border: 1px solid var(--hth-line-strong);
}

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

.page-contact .contact-feedback__figure .hth-figure__cap {
  padding: 12px 14px;
  border-top: 1px solid var(--hth-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--hth-on-dark-dim);
}

/* ---------- 邮寄与来访 ---------- */
.page-contact .contact-visit {
  padding: clamp(56px, 8vw, 104px) 0 clamp(12px, 2vw, 24px);
}

.page-contact .contact-visit__inner {
  display: grid;
  gap: clamp(20px, 3vw, 44px);
}

.page-contact .contact-visit__head .hth-title {
  margin: 12px 0 0;
  font-size: clamp(24px, 3vw, 34px);
  color: #fff;
}

.page-contact .contact-visit__body p {
  margin: 0 0 16px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-visit__body p:last-child {
  margin-bottom: 0;
}

/* ---------- 收尾 ---------- */
.page-contact .contact-closing {
  position: relative;
  isolation: isolate;
  padding: clamp(64px, 9vw, 120px) 0 clamp(72px, 10vw, 132px);
}

.page-contact .contact-closing::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(64% 90% at 16% 100%, rgba(30, 78, 140, .55), transparent 66%),
    radial-gradient(48% 72% at 84% 8%, rgba(40, 240, 168, .12), transparent 72%);
}

.page-contact .contact-closing__title {
  margin: 14px 0 0;
  max-width: 22ch;
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.14;
  font-weight: 800;
  color: #fff;
}

.page-contact .contact-closing__lede {
  margin: 20px 0 0;
  max-width: 52ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--hth-on-dark-dim);
}

.page-contact .contact-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-contact .contact-hotlinks {
  display: grid;
  gap: 1px;
  margin: clamp(34px, 4.5vw, 56px) 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--hth-line);
  background: var(--hth-line);
}

.page-contact .contact-hotlinks a {
  display: block;
  height: 100%;
  padding: 18px 20px;
  background: var(--hth-night);
  text-decoration: none;
  transition: background .25s var(--hth-ease);
}

.page-contact .contact-hotlinks a:hover,
.page-contact .contact-hotlinks a:focus-visible {
  background: var(--hth-stand);
}

.page-contact .contact-hotlinks__q {
  display: block;
  font-size: 15px;
  font-weight: 600;
  color: var(--hth-on-dark);
  transition: color .25s var(--hth-ease);
}

.page-contact .contact-hotlinks a:hover .contact-hotlinks__q {
  color: var(--hth-neon);
}

.page-contact .contact-hotlinks__a {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--hth-on-dark-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-contact .contact-coop__item {
    grid-template-columns: 46px minmax(0, 208px) minmax(0, 1fr);
    align-items: start;
    gap: 6px 24px;
  }

  .page-contact .contact-coop__no {
    grid-column: 1;
    padding-top: 3px;
  }

  .page-contact .contact-coop__item .hth-card-title {
    grid-column: 2;
  }

  .page-contact .contact-coop__desc {
    grid-column: 3;
  }

  .page-contact .contact-feedback__steps .hth-steps__nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-hotlinks {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-contact .contact-scope__inner {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: clamp(40px, 6vw, 96px);
  }

  .page-contact .contact-visit__inner {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    gap: clamp(40px, 6vw, 96px);
  }
}

@media (min-width: 960px) {
  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(40px, 5.5vw, 84px);
  }

  .page-contact .contact-coop__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
  }

  .page-contact .contact-feedback__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
  }
}

@media (max-width: 719px) {
  .page-contact .contact-feedback__figure {
    margin-top: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-card,
  .page-contact .contact-hotlinks a,
  .page-contact .contact-feedback__steps .hth-steps__btn {
    transition: none;
  }

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