/* ===== 联系入口 /reach-us/ 页面专属样式 ===== */

.page-contact {
  --contact-hair: calc(var(--space-1) / 2);
  display: block;
  padding-bottom: var(--section-y);
}

.page-contact .section {
  padding-block: var(--space-6);
}

.page-contact .section--tight {
  padding-block: var(--space-4);
}

/* 面包屑（仅本页间距与配色微调） */
.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--contact-hair);
  padding-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-contact .breadcrumbs__item {
  color: inherit;
  text-decoration: none;
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "／";
  margin-inline-end: var(--contact-hair);
  color: var(--color-line);
}

.page-contact a.breadcrumbs__item:hover,
.page-contact a.breadcrumbs__item:focus-visible {
  color: var(--color-accent);
}

.page-contact .breadcrumbs__item[aria-current="page"] {
  color: var(--color-ink);
}

/* ---------- 首屏引导区 ---------- */
.page-contact .contact-lead {
  position: relative;
  overflow: hidden;
  margin-top: var(--space-3);
  padding: var(--space-4) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(125% 105% at 92% 4%, var(--color-primary-soft) 0%, transparent 60%),
    linear-gradient(165deg, var(--color-surface) 0%, var(--color-surface-alt) 100%);
  box-shadow: var(--shadow-1);
}

.page-contact .contact-lead::after {
  content: "";
  position: absolute;
  inset-inline-end: -68px;
  top: -54px;
  width: 172px;
  height: 236px;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0.14;
  transform: rotate(19deg);
  pointer-events: none;
}

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

.page-contact .contact-lead__title {
  margin: var(--space-2) 0;
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-contact .contact-lead__lede {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-contact .contact-lead__facts {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-contact .contact-fact {
  display: grid;
  gap: var(--contact-hair);
  padding: var(--space-2);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--color-surface) 72%, transparent);
}

.page-contact .contact-fact__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-contact .contact-fact__v {
  margin: 0;
  font-size: var(--text-base);
  color: var(--color-ink);
}

/* ---------- 渠道总览 ---------- */
.page-contact .contact-media {
  margin: 0 0 var(--space-4);
}

.page-contact .contact-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-contact .contact-media--rhythm {
  margin: var(--space-3) 0 0;
}

.page-contact .channel-rows {
  display: grid;
  gap: var(--space-3);
}

.page-contact .channel-row {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
  transition: border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-contact .channel-row:hover,
.page-contact .channel-row:focus-within {
  border-color: color-mix(in srgb, var(--color-primary) 45%, var(--color-line));
  box-shadow: var(--shadow-2);
}

.page-contact .channel-row--self {
  background: linear-gradient(150deg, var(--color-surface-alt) 0%, var(--color-primary-soft) 160%);
}

.page-contact .channel-row__head {
  display: grid;
  gap: var(--space-1);
  align-items: baseline;
}

.page-contact .channel-row__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-contact .channel-row__label {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .channel-row__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  letter-spacing: 0.02em;
  color: var(--color-accent);
  overflow-wrap: anywhere;
}

.page-contact .channel-row__note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* 展开/收起 */
.page-contact .channel-row__more summary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) 0;
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--color-accent);
  list-style: none;
}

.page-contact .channel-row__more summary::-webkit-details-marker {
  display: none;
}

.page-contact .channel-row__more summary::before {
  content: "＋";
  font-family: var(--font-mono);
}

.page-contact .channel-row__more[open] summary::before {
  content: "－";
}

.page-contact .channel-row__more summary:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-contact .channel-detail {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-contact .channel-detail__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-contact .channel-detail__list {
  margin: 0;
  padding-inline-start: 1.1em;
  display: grid;
  gap: var(--contact-hair);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 咨询与对接 ---------- */
.page-contact .advice {
  display: grid;
  gap: var(--space-3);
}

.page-contact .advice__col {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);
}

.page-contact .advice__title,
.page-contact .affair-card__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .advice__list,
.page-contact .affair-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-2);
}

.page-contact .advice__list li,
.page-contact .affair-card__list li {
  position: relative;
  padding-inline-start: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-contact .advice__list li::before,
.page-contact .affair-card__list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.72em;
  width: 12px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  transform: skewX(-24deg);
}

.page-contact .affair-grid {
  display: grid;
  gap: var(--space-3);
}

.page-contact .affair-card {
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-1);
}

.page-contact .affair-card--muted {
  background: var(--color-surface-deep);
  box-shadow: none;
}

/* ---------- 响应节奏（反色区块） ---------- */
.page-contact .rhythm-band {
  position: relative;
  overflow: hidden;
  display: grid;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-3);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-lg);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  box-shadow: var(--shadow-2);
}

.page-contact .rhythm-band::before {
  content: "";
  position: absolute;
  inset-inline-start: -16%;
  top: -34%;
  width: 58%;
  height: 168%;
  background: linear-gradient(180deg, color-mix(in srgb, var(--color-contrast-accent) 42%, transparent) 0%, transparent 72%);
  transform: rotate(13deg);
  pointer-events: none;
}

.page-contact .rhythm-band__body,
.page-contact .rhythm-band__visual {
  position: relative;
  z-index: 1;
}

.page-contact .rhythm-band .eyebrow {
  color: var(--color-contrast-accent);
}

.page-contact .rhythm-band__title {
  margin: var(--space-2) 0;
  font-size: var(--text-2xl);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-band__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-list {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-contact .rhythm-list__item {
  display: grid;
  grid-template-columns: 2.4ch minmax(0, 1fr);
  gap: var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
}

.page-contact .rhythm-list__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.1em;
  color: var(--color-contrast-accent);
}

.page-contact .rhythm-chart {
  display: block;
  width: 100%;
  height: auto;
}

.page-contact .rhythm-chart__online {
  fill: var(--color-contrast-accent);
  opacity: 0.9;
}

.page-contact .rhythm-chart__offline {
  fill: transparent;
  stroke: var(--color-contrast-line);
  stroke-width: 1.5;
  stroke-dasharray: 7 7;
}

.page-contact .rhythm-chart__label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  fill: var(--color-contrast-surface);
}

.page-contact .rhythm-chart__label--dim {
  fill: var(--color-contrast-ink);
  opacity: 0.86;
}

.page-contact .rhythm-chart__ticks line {
  stroke: var(--color-contrast-line);
  stroke-width: 1;
}

/* ---------- 自查清单 ---------- */
.page-contact .checklist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-contact .checklist__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-sm);
  background: var(--color-surface-alt);
  transition: border-color 0.24s ease, background-color 0.24s ease;
}

.page-contact .checklist__item:hover {
  border-color: color-mix(in srgb, var(--color-primary) 38%, var(--color-line));
}

.page-contact .checklist__item:has(.checklist__box:checked) {
  background: var(--color-highlight);
  border-color: color-mix(in srgb, var(--color-accent) 34%, var(--color-line));
}

.page-contact .checklist__label {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: start;
  cursor: pointer;
}

.page-contact .checklist__box {
  width: 1.05em;
  height: 1.05em;
  margin: 0.32em 0 0;
  accent-color: var(--color-accent);
}

.page-contact .checklist__box:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

.page-contact .checklist__text {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-contact .checklist__link {
  justify-self: start;
  font-size: var(--text-sm);
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: var(--border-thin) solid color-mix(in srgb, var(--color-accent) 40%, transparent);
}

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

/* ---------- 顺路入口 ---------- */
.page-contact .next-steps {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-contact .next-step {
  display: grid;
  gap: var(--contact-hair);
  padding: var(--space-3);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  background: linear-gradient(150deg, var(--color-surface) 0%, var(--color-primary-soft) 155%);
  text-decoration: none;
  color: var(--color-ink);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.page-contact .next-step:hover,
.page-contact .next-step:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-color: color-mix(in srgb, var(--color-primary) 42%, var(--color-line));
}

.page-contact .next-step__k {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  color: var(--color-ink-muted);
}

.page-contact .next-step__v {
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  color: var(--color-ink);
}

.page-contact .next-step__d {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

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

  .page-contact .channel-detail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

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

@media (min-width: 720px) {
  .page-contact .channel-row__head {
    grid-template-columns: 3.5ch 11ch minmax(0, 1fr);
    gap: var(--space-3);
  }

  .page-contact .checklist__item {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-contact .checklist__link {
    justify-self: end;
  }

  .page-contact .advice,
  .page-contact .affair-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }
}

@media (min-width: 900px) {
  .page-contact .contact-lead {
    padding: var(--space-6) var(--space-4);
  }

  .page-contact .contact-lead__inner {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-contact .contact-lead__title {
    font-size: var(--text-4xl);
  }

  .page-contact .contact-lead__facts {
    grid-template-columns: minmax(0, 1fr);
    margin-top: 0;
  }

  .page-contact .channel-row {
    padding: var(--space-4) var(--space-3);
  }

  .page-contact .rhythm-band {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: var(--space-6);
    padding: var(--space-6) var(--space-4);
  }

  .page-contact .rhythm-band__title {
    font-size: var(--text-3xl);
  }

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

@media (min-width: 1180px) {
  .page-contact .container {
    padding-inline: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-row,
  .page-contact .checklist__item,
  .page-contact .next-step {
    transition: none;
  }

  .page-contact .next-step:hover,
  .page-contact .next-step:focus-visible {
    transform: none;
  }
}