.page-contact {
  --c-cut: 22px;
  --c-measure: 38em;
  display: block;
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

/* 面包屑上下文 */
.page-contact .breadcrumb {
  padding-top: 20px;
  font-size: var(--fs-14);
}

/* 首屏 */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  padding-block: 32px clamp(40px, 7vw, 72px);
  border-bottom: 1px solid var(--hair);
}

.page-contact .contact-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: 0.22;
  z-index: 0;
  pointer-events: none;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(6, 11, 24, 0.5) 0%, rgba(6, 11, 24, 0.82) 55%, var(--bg) 100%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  z-index: 2;
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  font-size: clamp(2rem, 7vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--fg);
}

.page-contact .contact-hero__lede {
  margin-top: 20px;
  max-width: 42em;
}

/* 三个联系入口 */
.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 40px;
}

.page-contact .entry-card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--bg-raise);
  border: 1px solid var(--hair);
  clip-path: polygon(0 0, calc(100% - var(--c-cut)) 0, 100% var(--c-cut), 100% 100%, 0 100%);
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-contact .entry-card::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: var(--c-cut);
  height: var(--c-cut);
  background: linear-gradient(
    135deg,
    transparent calc(50% - 0.5px),
    var(--hair) calc(50% - 0.5px),
    var(--hair) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
  transition: background 0.2s var(--ease);
}

.page-contact .entry-card:hover,
.page-contact .entry-card:focus-within {
  border-color: var(--accent);
  background: var(--bg-steel);
  transform: translateY(-2px);
}

.page-contact .entry-card:hover::before,
.page-contact .entry-card:focus-within::before {
  background: linear-gradient(
    135deg,
    transparent calc(50% - 0.5px),
    var(--accent) calc(50% - 0.5px),
    var(--accent) calc(50% + 0.5px),
    transparent calc(50% + 0.5px)
  );
}

.page-contact .entry-card__top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .entry-card__label {
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--fg-dim);
}

.page-contact .entry-card__value {
  margin: 16px 0 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.02rem, 4.1vw, 1.32rem);
  line-height: 1.4;
  letter-spacing: 0.01em;
  color: var(--data);
  word-break: break-word;
}

.page-contact .entry-card__value--sm {
  font-family: var(--font-sans);
  font-size: clamp(1rem, 3.6vw, 1.12rem);
  line-height: 1.65;
  letter-spacing: 0;
}

.page-contact .entry-card__use {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--fg);
}

.page-contact .entry-card__meta {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hair);
  font-size: var(--fs-12);
  line-height: 1.65;
  color: var(--fg-dim);
}

/* 章节节奏 */
.page-contact .section {
  padding-block: clamp(40px, 7vw, 72px);
}

.page-contact .section--tight {
  padding-block: clamp(30px, 5vw, 52px);
}

.page-contact .section__head {
  max-width: 46em;
}

.page-contact .contact-rule {
  display: block;
  width: 52px;
  height: 2px;
  margin-bottom: 18px;
  background: var(--accent);
  transform: skewX(-24deg);
}

.page-contact .contact-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}

/* 提问步骤 */
.page-contact .ask-steps {
  counter-reset: step;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .ask-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 46px;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--fg);
}

.page-contact .ask-steps li::before {
  content: "0" counter(step);
  position: absolute;
  left: 0;
  top: 0.15em;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
  color: var(--accent);
}

/* 旁注 */
.page-contact .contact-rail {
  border-left: 2px solid var(--accent);
  padding: 2px 0 2px 22px;
  background: transparent;
}

.page-contact .contact-rail .rail__title {
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--fg);
}

.page-contact .contact-rail ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .contact-rail li {
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--fg-dim);
}

/* 订阅条目 */
.page-contact .sub-list {
  margin-top: 28px;
  border-top: 1px solid var(--hair);
}

.page-contact .sub-list__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--hair);
}

.page-contact .sub-list__key {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  color: var(--accent);
}

.page-contact .sub-list__val {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--fg);
}

/* 地址区 */
.page-contact .contact-split--address {
  align-items: start;
}

.page-contact .contact-figure {
  margin: 0;
}

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

.page-contact .address-block {
  background: var(--bg-raise);
  border: 1px solid var(--hair);
  clip-path: polygon(0 0, calc(100% - var(--c-cut)) 0, 100% var(--c-cut), 100% 100%, 0 100%);
  padding: 24px 22px 26px;
}

.page-contact .address-list {
  margin: 0;
  display: grid;
  gap: 20px;
}

.page-contact .address-list__row {
  display: grid;
  gap: 6px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--hair);
}

.page-contact .address-list__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .address-list dt {
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--fg-dim);
}

.page-contact .address-list dd {
  margin: 0;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--fg);
}

.page-contact .address-list dd.data-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--data);
  word-break: break-word;
}

/* 帮助中心收束 */
.page-contact .contact-help__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(26px, 5vw, 44px);
  background: var(--bg-steel);
  border-left: 3px solid var(--accent);
}

.page-contact .contact-help__panel h2 {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.page-contact .contact-help__panel p {
  margin: 0;
  max-width: 40em;
  font-size: var(--fs-17);
  line-height: 1.8;
  color: var(--fg-dim);
}

.page-contact .contact-help__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

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

  .page-contact .sub-list__item {
    grid-template-columns: 12rem minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.85fr);
    gap: 56px;
    margin-top: 36px;
  }

  .page-contact .contact-split--address {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: stretch;
    gap: 40px;
  }

  .page-contact .contact-help__panel {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.8fr);
    align-items: center;
    gap: 40px;
  }

  .page-contact .contact-help__links {
    flex-direction: column;
    align-items: stretch;
  }

  .page-contact .contact-help__links .btn {
    text-align: center;
  }
}

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

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