.page-contact {
  background:
    radial-gradient(1100px 520px at 84% -8%, rgba(53, 242, 208, .13), transparent 62%),
    radial-gradient(880px 460px at -12% 28%, rgba(255, 90, 31, .09), transparent 66%),
    var(--arena-900);
  color: var(--paper);
  font-family: var(--font-sans);
  padding-bottom: clamp(2.5rem, 7vw, 5rem);
}

.page-contact .page-shell {
  max-width: 1320px;
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
}

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

/* ---------- 侧边索引轨道 ---------- */
.page-contact .rail {
  border-bottom: 1px solid var(--line);
  padding-bottom: .5rem;
}

.page-contact .rail__label {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .rail__list {
  display: flex;
  gap: .4rem;
  margin: 0;
  padding: 0 0 .3rem;
  list-style: none;
  overflow-x: auto;
}

.page-contact .rail__link {
  display: inline-block;
  white-space: nowrap;
  padding: .38rem .7rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--mist);
  font-size: .8rem;
  line-height: 1.4;
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-contact .rail__link:hover,
.page-contact .rail__link:focus-visible {
  color: var(--arena-900);
  background: var(--cyan-500);
  border-color: var(--cyan-500);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(1.25rem, 4vw, 2.25rem);
}

.page-contact .breadcrumb {
  margin-bottom: 1rem;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 4vw, 2.25rem);
  margin-top: .5rem;
}

.page-contact .contact-hero h1 {
  font-family: var(--font-sans);
  font-weight: 300;
  font-size: clamp(2rem, 6.2vw, 3.8rem);
  line-height: 1.12;
  letter-spacing: -.015em;
  margin: .55rem 0 1rem;
  color: var(--paper);
}

.page-contact .contact-hero__lede {
  max-width: 44ch;
  margin: 0;
  color: var(--mist);
  font-size: clamp(1rem, 1.6vw, 1.08rem);
  line-height: 1.8;
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  min-height: 220px;
  border: 1px solid var(--line);
  background: var(--arena-800);
  clip-path: polygon(0 0, 100% 0, 100% 86%, 0 100%);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(155deg, rgba(7, 20, 38, .12) 0%, rgba(7, 20, 38, .74) 100%);
  pointer-events: none;
}

/* ---------- 章节节奏 ---------- */
.page-contact .section {
  padding-block: clamp(2.25rem, 6vw, 3.75rem);
  border-top: 1px solid var(--line);
  scroll-margin-top: 7rem;
}

.page-contact .section__head {
  max-width: 60ch;
  margin-bottom: 1.4rem;
}

.page-contact .section__title {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(1.45rem, 3.4vw, 2.1rem);
  line-height: 1.24;
  letter-spacing: -.01em;
  margin: .4rem 0 0;
  color: var(--paper);
}

/* ---------- 三条直连通道 ---------- */
.page-contact .lanes__lede {
  margin: .85rem 0 0;
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.8;
}

.page-contact .lane-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 1.4rem;
  padding: 0;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .lane {
  position: relative;
  background: var(--arena-800);
  padding: 1.4rem 1.25rem 2.35rem;
  transition: background .3s var(--ease);
}

.page-contact .lane:hover,
.page-contact .lane:focus-within {
  background: var(--arena-700);
}

.page-contact .lane::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), var(--orange-600));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}

.page-contact .lane:hover::before,
.page-contact .lane:focus-within::before {
  transform: scaleX(1);
}

.page-contact .lane__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .75rem;
}

.page-contact .lane__index {
  font-family: var(--font-mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--line);
}

.page-contact .lane__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1rem, 2.5vw, 1.24rem);
  line-height: 1.4;
  color: var(--paper);
  margin: .45rem 0 .7rem;
  word-break: break-word;
}

.page-contact .lane__value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .lane__value a:hover,
.page-contact .lane__value a:focus-visible {
  color: var(--cyan-200);
  border-bottom-color: var(--cyan-500);
}

.page-contact .lane__value--text {
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: clamp(.98rem, 2.2vw, 1.08rem);
  line-height: 1.65;
  letter-spacing: .01em;
}

.page-contact .lane__desc {
  margin: 0;
  color: var(--mist);
  font-size: .9rem;
  line-height: 1.75;
}

.page-contact .lane__time {
  position: absolute;
  left: 1.25rem;
  right: 1.25rem;
  bottom: .9rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .09em;
  color: var(--mist);
  opacity: .62;
  transition: opacity .3s var(--ease), color .3s var(--ease);
}

.page-contact .lane:hover .lane__time,
.page-contact .lane:focus-within .lane__time {
  opacity: 1;
  color: var(--cyan-500);
}

/* ---------- 合作板块 ---------- */
.page-contact .partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 2.5rem);
}

.page-contact .partners__copy p {
  margin: 1rem 0 .9rem;
  color: var(--mist);
  font-size: .96rem;
  line-height: 1.8;
}

.page-contact .partners__copy .section__title {
  margin-top: .4rem;
}

.page-contact .partners__list {
  list-style: none;
  margin: 1.1rem 0 1.5rem;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-contact .partners__list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--paper);
  font-size: .94rem;
  line-height: 1.65;
}

.page-contact .partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: .7rem;
  height: 2px;
  background: var(--orange-600);
}

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

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

.page-contact .partners__stats {
  list-style: none;
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .partners__stats li {
  display: flex;
  flex-direction: column;
  gap: .3rem;
  background: var(--arena-800);
  padding: 1.1rem 1.15rem;
}

.page-contact .partners__stats strong {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  line-height: 1;
  color: var(--orange-400);
}

.page-contact .partners__stats span {
  color: var(--mist);
  font-size: .85rem;
  line-height: 1.55;
}

/* ---------- 老用户 ---------- */
.page-contact .existing__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 1.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .existing__panel {
  background: var(--arena-800);
  padding: clamp(1.15rem, 3vw, 1.75rem);
}

.page-contact .existing__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: clamp(2.4rem, 7vw, 3.3rem);
  line-height: 1;
  color: var(--cyan-500);
}

.page-contact .existing__unit {
  margin: .5rem 0 .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-contact .existing__text {
  margin: 0;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.78;
}

.page-contact .existing__panel h3 {
  margin: .35rem 0 .6rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1.08rem;
  line-height: 1.4;
  color: var(--paper);
}

.page-contact .existing__panel .btn {
  margin-top: 1.1rem;
}

/* ---------- 咨询准备 ---------- */
.page-contact .prepare__list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border-block: 1px solid var(--line);
}

.page-contact .prepare__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .55rem 1rem;
  background: var(--arena-900);
  padding: 1.15rem clamp(.4rem, 2vw, 1.15rem);
}

.page-contact .prepare__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .06em;
  color: var(--orange-400);
  padding-top: .1rem;
}

.page-contact .prepare__item h3 {
  margin: 0 0 .35rem;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--paper);
}

.page-contact .prepare__item p {
  margin: 0;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.75;
}

.page-contact .prepare__foot {
  margin: 1.5rem 0 0;
  max-width: 66ch;
  color: var(--mist);
  font-size: .92rem;
  line-height: 1.85;
}

.page-contact .prepare__foot a {
  color: var(--cyan-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 208, .45);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-contact .prepare__foot a:hover,
.page-contact .prepare__foot a:focus-visible {
  color: var(--cyan-500);
  border-bottom-color: var(--cyan-500);
}

/* ---------- 到访与邮寄 ---------- */
.page-contact .visit__card {
  padding: clamp(1.35rem, 4vw, 2.4rem);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange-600);
  background:
    linear-gradient(135deg, rgba(53, 242, 208, .09), rgba(7, 20, 38, 0) 58%),
    var(--arena-800);
}

.page-contact .visit__address {
  margin: .9rem 0 1.1rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.4vw, 1.24rem);
  line-height: 1.7;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .visit__note {
  margin: 0 0 .7rem;
  max-width: 62ch;
  color: var(--mist);
  font-size: .93rem;
  line-height: 1.82;
}

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

/* ---------- 键盘焦点 ---------- */
.page-contact a:focus-visible,
.page-contact .btn:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 2px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-contact .page-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: clamp(1.5rem, 3vw, 3rem);
    align-items: start;
  }

  .page-contact .rail {
    position: sticky;
    top: 6.5rem;
    border-bottom: 0;
    border-left: 1px solid var(--line);
    padding: 0 0 0 1rem;
  }

  .page-contact .rail__list {
    flex-direction: column;
    gap: .1rem;
    overflow: visible;
    padding: 0;
  }

  .page-contact .rail__link {
    display: block;
    white-space: normal;
    border: 0;
    border-left: 1px solid transparent;
    margin-left: -1.02rem;
    padding: .45rem 0 .45rem 1rem;
    background: none;
    font-size: .82rem;
  }

  .page-contact .rail__link:hover,
  .page-contact .rail__link:focus-visible {
    background: none;
    color: var(--cyan-200);
    border-left-color: var(--cyan-500);
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    align-items: end;
  }

  .page-contact .contact-hero__media {
    min-height: 340px;
  }

  .page-contact .contact-hero__media img {
    min-height: 340px;
  }
}

@media (min-width: 780px) {
  .page-contact .lane-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .partners__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: start;
  }

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

  .page-contact .existing__panel--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 640px) {
  .page-contact .partners__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}