.page-contact {
  --pc-gap: clamp(16px, 3vw, 32px);
  --pc-ink-soft: #4a6274;
  background:
    radial-gradient(1100px 560px at 88% -8%, rgba(25, 245, 208, .10), transparent 62%),
    radial-gradient(760px 420px at 0% 26%, rgba(67, 86, 214, .12), transparent 68%),
    var(--ink-950);
  color: var(--paper-50);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

.page-contact .section {
  padding-block: clamp(30px, 5.5vw, 62px);
}

.page-contact .breadcrumbs {
  padding-top: clamp(14px, 3vw, 26px);
  font-size: .8rem;
  letter-spacing: .04em;
}

.page-contact .eyebrow {
  letter-spacing: .2em;
  text-transform: uppercase;
  font-size: .72rem;
  color: var(--cyan-400);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(16px, 3vw, 34px);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -6%;
  right: -12%;
  width: min(660px, 92vw);
  height: min(520px, 72vw);
  background: conic-gradient(from 205deg at 62% 42%, rgba(25, 245, 208, .16), rgba(67, 86, 214, .14), transparent 72%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 76%);
  pointer-events: none;
  z-index: 0;
}

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

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-contact .contact-hero__main h1 {
  margin: 10px 0 16px;
  font-size: clamp(2rem, 7.6vw, 3.5rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -.012em;
  max-width: 14em;
}

.page-contact .contact-hero__main .lede {
  max-width: 40em;
  color: var(--steel-400);
  font-size: clamp(.96rem, 2.6vw, 1.06rem);
  line-height: 1.75;
}

/* 印刷标签卡 */
.page-contact .label-stack {
  display: grid;
  gap: 12px;
  margin-top: clamp(20px, 4vw, 30px);
}

.page-contact .label-card {
  position: relative;
  padding: 16px 18px 16px 22px;
  background: var(--paper-50);
  color: var(--ink-950);
  border: 1px solid rgba(18, 58, 85, .34);
  border-radius: var(--radius-md);
  box-shadow: 7px 7px 0 rgba(18, 58, 85, .5);
  transition: transform .28s var(--ease), box-shadow .28s var(--ease);
}

.page-contact .label-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 rgba(0, 191, 168, .35);
}

.page-contact .label-card::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--cyan-600);
}

.page-contact .label-card__no {
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: .7rem;
  letter-spacing: .14em;
  color: var(--steel-400);
}

.page-contact .label-card__key {
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-600);
}

.page-contact .label-card__val {
  margin-top: 5px;
  font-size: clamp(.95rem, 3.6vw, 1.2rem);
  font-weight: 700;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.page-contact .label-card__note {
  margin-top: 6px;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--pc-ink-soft);
}

/* 并列通道 */
.page-contact .contact-hero__aside {
  display: grid;
  gap: 14px;
}

.page-contact .lane-card {
  display: block;
  position: relative;
  padding: 20px 20px 18px;
  background: linear-gradient(155deg, var(--ink-800), var(--ink-950) 88%);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-lg);
  color: var(--paper-50);
  text-decoration: none;
  box-shadow: var(--shadow-paper);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-contact .lane-card:hover,
.page-contact .lane-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--cyan-400);
  box-shadow: var(--shadow-island);
}

.page-contact .lane-card--gold {
  border-color: var(--line-gold);
}

.page-contact .lane-card--gold:hover,
.page-contact .lane-card--gold:focus-visible {
  border-color: var(--gold-400);
}

.page-contact .lane-card__tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-contact .lane-card__title {
  font-size: clamp(1.2rem, 4.4vw, 1.5rem);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .lane-card__body {
  margin-top: 8px;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--steel-400);
}

.page-contact .lane-card__go {
  display: inline-block;
  margin-top: 14px;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--cyan-400);
}

.page-contact .lane-card--gold .lane-card__go {
  color: var(--gold-400);
}

/* ---------- 图片框通用 ---------- */
.page-contact .media-frame {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-800);
  overflow: hidden;
}

.page-contact .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .media-frame__caption {
  padding: 10px 14px;
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--steel-400);
  border-top: 1px solid var(--line);
}

.page-contact .contact-hero__aside .media-frame {
  margin-top: 4px;
}

/* ---------- 反馈主题 ---------- */
.page-contact .feedback__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-contact .feedback__intro h2,
.page-contact .partnership__text h2,
.page-contact .hours-band h2,
.page-contact .registry__head h2 {
  margin: 10px 0 14px;
  font-size: clamp(1.45rem, 5vw, 2.1rem);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-contact .feedback__intro p {
  margin-bottom: 12px;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--steel-400);
}

.page-contact .feedback__intro a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .feedback__intro .media-frame {
  margin-top: 20px;
}

.page-contact .topic-list {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-contact .topic {
  border-bottom: 1px solid var(--line);
}

.page-contact .topic:first-child {
  border-top: 1px solid var(--line);
}

.page-contact .topic__sum {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 16px 6px;
  cursor: pointer;
  list-style: none;
  transition: background .25s var(--ease);
}

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

.page-contact .topic__sum:hover {
  background: rgba(18, 58, 85, .38);
}

.page-contact .topic__code {
  font-size: .8rem;
  color: var(--cyan-400);
  letter-spacing: .1em;
}

.page-contact .topic__name {
  font-size: 1.02rem;
  font-weight: 700;
}

.page-contact .topic__hint {
  margin-left: auto;
  font-size: .76rem;
  color: var(--steel-400);
  display: none;
}

.page-contact .topic__panel {
  padding: 0 6px 18px;
}

.page-contact .topic__panel p {
  margin-bottom: 10px;
  font-size: .91rem;
  line-height: 1.78;
  color: var(--steel-400);
}

.page-contact .topic[open] .topic__name {
  color: var(--mint-300);
}

/* ---------- 响应时段 ---------- */
.page-contact .hours-band {
  display: grid;
  gap: clamp(18px, 3vw, 26px);
  padding: clamp(20px, 4vw, 38px);
  background: linear-gradient(120deg, var(--ink-800), var(--ink-700));
  border: 1px solid var(--line-cyan);
  border-left: 4px solid var(--cyan-400);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-paper);
}

.page-contact .hours-band__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}

.page-contact .stat {
  padding: 14px 16px;
  background: rgba(4, 18, 31, .55);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.page-contact .stat__num {
  display: block;
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 700;
  color: var(--cyan-400);
  letter-spacing: .01em;
}

.page-contact .stat__label {
  display: block;
  margin-top: 6px;
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--steel-400);
}

.page-contact .hours-band__note {
  font-size: .93rem;
  line-height: 1.8;
  color: var(--steel-400);
  max-width: 62em;
}

/* ---------- 合作与媒体 ---------- */
.page-contact .partnership__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 42px);
  align-items: center;
}

.page-contact .partnership__text p {
  margin-bottom: 12px;
  font-size: .94rem;
  line-height: 1.78;
  color: var(--steel-400);
}

.page-contact .mail-formula {
  padding: clamp(18px, 3vw, 26px);
  background: var(--ink-950);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-md);
  box-shadow: 8px 8px 0 rgba(0, 191, 168, .16);
}

.page-contact .mail-formula__title {
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-contact .mail-formula__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .mail-formula__list li {
  padding: 10px 12px;
  background: rgba(18, 58, 85, .55);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-size: .84rem;
  line-height: 1.55;
  color: var(--mint-300);
  overflow-wrap: anywhere;
}

.page-contact .mail-formula__hint {
  margin-top: 14px;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--steel-400);
}

/* ---------- 地址与备案 ---------- */
.page-contact .registry__panel {
  padding: clamp(22px, 4vw, 42px);
}

.page-contact .registry__panel .eyebrow {
  color: var(--cyan-600);
}

.page-contact .registry__head h2 {
  color: var(--ink-950);
}

.page-contact .registry__lead {
  font-size: .92rem;
  line-height: 1.75;
  color: var(--pc-ink-soft);
  max-width: 46em;
}

.page-contact .registry__list {
  margin: 20px 0 0;
  display: grid;
  gap: 2px;
}

.page-contact .registry__row {
  display: grid;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(18, 58, 85, .26);
}

.page-contact .registry__row dt {
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #54707f;
}

.page-contact .registry__row dd {
  margin: 0;
  font-weight: 600;
  color: var(--ink-950);
  overflow-wrap: anywhere;
}

.page-contact .registry__note {
  margin-top: 18px;
  font-size: .88rem;
  line-height: 1.75;
  color: var(--pc-ink-soft);
}

.page-contact .registry__links {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .topic__hint {
    display: inline;
  }

  .page-contact .registry__row {
    grid-template-columns: 128px 1fr;
    align-items: baseline;
    gap: 14px;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.02fr .98fr;
    align-items: start;
  }

  .page-contact .contact-hero__main h1 {
    transform: skewX(-2deg);
    transform-origin: left center;
    margin-right: 6px;
  }

  .page-contact .feedback__grid {
    grid-template-columns: .86fr 1.14fr;
    align-items: start;
  }

  .page-contact .partnership__grid {
    grid-template-columns: 1fr .92fr;
  }

  .page-contact .hours-band {
    grid-template-columns: .9fr 1.1fr;
    align-items: center;
  }

  .page-contact .hours-band__note {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1040px) {
  .page-contact .contact-hero__aside {
    padding-top: 6px;
  }

  .page-contact .topic__sum {
    padding: 18px 6px;
  }
}

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