.page-contact {
  --contact-rule: rgba(143, 166, 184, 0.28);
  --contact-rule-ink: rgba(27, 20, 17, 0.16);
  --contact-paper-soft: rgba(243, 235, 221, 0.78);
  background: var(--abg-navy);
  color: #fff;
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-contact .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-contact .section {
  padding-block: clamp(56px, 8vw, 96px);
}

.page-contact .section--paper {
  background: var(--abg-paper);
  color: var(--abg-ink);
}

.page-contact .section--graphite {
  background: var(--abg-graphite);
  color: #fff;
}

.page-contact .chapter-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(45, 226, 255, 0.55);
}

.page-contact .section--paper .chapter-num {
  color: rgba(196, 92, 24, 0.75);
}

.page-contact .status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
  background: var(--abg-mist);
}

/* ---------- 首屏 ---------- */

.contact-stage {
  position: relative;
  padding-block: clamp(92px, 13vw, 156px) clamp(48px, 7vw, 80px);
  overflow: hidden;
  background:
    radial-gradient(circle at 10% 6%, rgba(45, 226, 255, 0.16), transparent 46%),
    radial-gradient(circle at 92% 84%, rgba(255, 139, 61, 0.14), transparent 52%),
    var(--abg-navy);
}

.contact-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(143, 166, 184, 0.08) 0 1px,
    transparent 1px 52px
  );
  pointer-events: none;
}

.contact-stage__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  align-items: center;
}

.contact-stage__lead .title-xl {
  margin: 18px 0 20px;
  max-width: 20ch;
  font-size: clamp(28px, 4.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
}

.contact-stage__lead .lede {
  max-width: 40ch;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--contact-paper-soft);
}

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

.page-contact .contact-stage__actions .btn--ghost {
  color: var(--abg-paper);
  border-color: rgba(243, 235, 221, 0.42);
}

.page-contact .contact-stage__actions .btn--ghost:hover {
  border-color: var(--abg-cyan);
  color: var(--abg-cyan);
}

.contact-stage__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 32px;
  margin: 34px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--contact-rule);
  list-style: none;
}

.contact-stage__stats li {
  display: grid;
  gap: 4px;
}

.contact-stage__stat-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 24px);
  font-weight: 600;
  line-height: 1;
  color: var(--abg-cyan);
}

.contact-stage__stat-label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--abg-mist);
}

/* 联系卡 */

.page-contact .contact-card {
  position: relative;
  padding: clamp(16px, 2.4vw, 26px);
}

.contact-card__media {
  margin: 0 0 clamp(16px, 2vw, 22px);
  overflow: hidden;
  background: var(--abg-navy-2);
}

.contact-card__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
}

.contact-card__title {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--abg-ink);
}

.channel-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.channel-list__row {
  display: grid;
  gap: 5px;
  padding: 13px 0;
  border-top: 1px solid var(--contact-rule-ink);
}

.channel-list__row:first-child {
  border-top: 0;
  padding-top: 4px;
}

.channel-list__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(27, 20, 17, 0.52);
}

.channel-list__value {
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--abg-ink);
  text-decoration: none;
  overflow-wrap: anywhere;
}

a.channel-list__value:hover,
a.channel-list__value:focus-visible {
  color: #b8531a;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.channel-list__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(27, 20, 17, 0.75);
}

.page-contact .channel-list__status .status-dot {
  background: var(--abg-green);
  box-shadow: 0 0 0 4px rgba(56, 211, 159, 0.2);
}

/* ---------- 锚点导航 ---------- */

.page-contact .contact-anchors {
  position: sticky;
  top: 0;
  z-index: 6;
  background: rgba(8, 28, 51, 0.94);
  border-top: 1px solid var(--contact-rule);
  border-bottom: 1px solid var(--contact-rule);
  backdrop-filter: blur(10px);
}

.page-contact .contact-anchors .anchor-nav__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 10px var(--gutter);
  max-width: var(--shell);
  margin-inline: auto;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-contact .contact-anchors .anchor-nav__list::-webkit-scrollbar {
  display: none;
}

.page-contact .contact-anchors .anchor-nav__list > li {
  flex: none;
}

.page-contact .contact-anchors .anchor-nav__link {
  display: block;
  padding: 8px 14px;
  white-space: nowrap;
  border: 1px solid var(--contact-rule);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--abg-mist);
  text-decoration: none;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-contact .contact-anchors .anchor-nav__link:hover,
.page-contact .contact-anchors .anchor-nav__link:focus-visible {
  color: var(--abg-cyan);
  border-color: rgba(45, 226, 255, 0.6);
}

/* ---------- 01 合作方向 ---------- */

.contact-dirs__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 42px);
}

.contact-dirs__title {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: #fff;
}

.contact-dirs__sub {
  margin: 0;
  max-width: 48ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--abg-mist);
}

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

.dir-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 22px 20px 20px;
  background: linear-gradient(158deg, rgba(18, 52, 90, 0.94), rgba(36, 42, 50, 0.94));
  border: 1px solid var(--contact-rule);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.dir-card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 20px;
  background: var(--abg-cyan);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  opacity: 0.55;
}

.dir-card:hover,
.dir-card:focus-within {
  border-color: rgba(45, 226, 255, 0.62);
}

.dir-card__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--abg-cyan);
}

.dir-card__title {
  margin: 0;
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: #fff;
}

.dir-card__fit {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--abg-orange);
}

.dir-card__body {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.76;
  color: var(--contact-paper-soft);
}

.dir-card__foot {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--contact-rule);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--abg-mist);
}

/* ---------- 02 咨询分类 ---------- */

.contact-consult__head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
}

.contact-consult__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--abg-ink);
}

.contact-consult__sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(27, 20, 17, 0.7);
}

.page-contact .contact-consult__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .filter-btn {
  appearance: none;
  border: 1px solid var(--contact-rule-ink);
  border-radius: 999px;
  background: transparent;
  padding: 8px 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.5;
  color: rgba(27, 20, 17, 0.72);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .filter-btn:hover {
  border-color: rgba(27, 20, 17, 0.45);
  color: var(--abg-ink);
}

.page-contact .filter-btn:is([aria-pressed="true"], .is-active, [data-active]) {
  background: var(--abg-ink);
  border-color: var(--abg-ink);
  color: var(--abg-paper);
}

.page-contact .filter-btn:focus-visible {
  outline: 2px solid var(--abg-orange);
  outline-offset: 2px;
}

.prep-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(18px, 3vw, 28px);
}

.prep-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 20px 22px;
  background: #fff;
  border: 1px solid var(--contact-rule-ink);
}

.prep-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--abg-orange);
}

.page-contact .prep-card[hidden] {
  display: none;
}

.prep-card__tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(27, 20, 17, 0.55);
}

.prep-card__title {
  margin: 0;
  font-size: 16.5px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--abg-ink);
}

.prep-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(27, 20, 17, 0.68);
}

.prep-list {
  margin: 6px 0 0;
  padding: 10px 0 0;
  border-top: 1px solid rgba(27, 20, 17, 0.1);
  list-style: none;
  display: grid;
  gap: 6px;
}

.prep-list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.62;
  color: rgba(27, 20, 17, 0.8);
}

.prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 1px;
  background: var(--abg-orange);
}

.prep-empty {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(27, 20, 17, 0.7);
}

/* ---------- 03 合作流程 ---------- */

.contact-flow {
  position: relative;
  background:
    radial-gradient(circle at 84% 14%, rgba(45, 226, 255, 0.14), transparent 52%),
    var(--abg-navy-2);
  color: #fff;
}

.contact-flow__inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: center;
}

.contact-flow__title {
  margin: 12px 0 12px;
  max-width: 22ch;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: #fff;
}

.contact-flow__sub {
  margin: 0;
  max-width: 44ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--contact-paper-soft);
}

.flow-steps {
  margin: 28px 0 0;
  padding: 0 0 0 20px;
  list-style: none;
  border-left: 1px solid rgba(45, 226, 255, 0.35);
}

.flow-step {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 0 16px 18px;
}

.flow-step::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 24px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--abg-cyan);
  box-shadow: 0 0 0 4px rgba(45, 226, 255, 0.16);
}

.flow-step__num {
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--abg-orange);
}

.flow-step__main h3 {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: #fff;
}

.flow-step__main p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.76;
  color: var(--contact-paper-soft);
}

.contact-flow__media {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid rgba(45, 226, 255, 0.3);
  background: rgba(8, 28, 51, 0.7);
}

.contact-flow__media::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 28px;
  height: 28px;
  background: var(--abg-orange);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
}

.contact-flow__media img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- 04 客服渠道 ---------- */

.contact-channels__head {
  display: grid;
  gap: 12px;
  max-width: 62ch;
}

.contact-channels__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.015em;
  color: var(--abg-ink);
}

.contact-channels__sub {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(27, 20, 17, 0.7);
}

.contact-channels__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 38px);
}

.chan-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--contact-rule-ink);
}

.chan-card__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(27, 20, 17, 0.55);
}

.chan-card__value {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: clamp(15px, 1.9vw, 18px);
  font-weight: 800;
  line-height: 1.5;
  color: var(--abg-ink);
  text-decoration: none;
  overflow-wrap: anywhere;
}

a.chan-card__value:hover,
a.chan-card__value:focus-visible {
  color: #b8531a;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-contact .chan-card__value .status-dot {
  background: var(--abg-green);
  box-shadow: 0 0 0 4px rgba(56, 211, 159, 0.22);
}

.chan-card__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(27, 20, 17, 0.7);
}

.check-band {
  position: relative;
  margin-top: clamp(24px, 4vw, 38px);
  padding: clamp(20px, 3vw, 30px);
  background: var(--abg-navy);
  color: var(--abg-paper);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}

.check-band__title {
  margin: 0 0 16px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 800;
  line-height: 1.45;
  color: #fff;
}

.check-band__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-band__list li {
  display: grid;
  gap: 4px;
  padding-top: 12px;
  border-top: 1px solid var(--contact-rule);
}

.check-band__list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.check-band__key {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--abg-cyan);
}

.check-band__text {
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--contact-paper-soft);
}

/* ---------- 地址信息带 ---------- */

.contact-address {
  background: var(--abg-graphite);
  color: #fff;
  border-top: 1px solid var(--contact-rule);
  padding-block: clamp(36px, 5vw, 56px);
}

.contact-address__inner {
  display: grid;
  gap: 22px;
}

.contact-address__block {
  display: grid;
  gap: 6px;
}

.contact-address__label {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--abg-orange);
}

.contact-address__line {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--contact-paper-soft);
}

.contact-address__links {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.contact-address__links a {
  font-size: 14px;
  color: var(--contact-paper-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(143, 166, 184, 0.4);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.contact-address__links a:hover,
.contact-address__links a:focus-visible {
  color: var(--abg-cyan);
  border-color: var(--abg-cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .contact-dirs__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

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

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

  .contact-address__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }
}

@media (min-width: 900px) {
  .contact-stage__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

  .contact-dirs__head {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    align-items: end;
    column-gap: 28px;
  }

  .contact-dirs__head .chapter-num {
    grid-row: span 2;
    align-self: start;
  }

  .contact-dirs__sub {
    grid-column: 2;
  }

  .contact-flow__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .check-band__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .check-band__list li {
    border-top: 0;
    padding-top: 0;
    padding-right: 20px;
    border-left: 1px solid var(--contact-rule);
    padding-left: 20px;
  }

  .check-band__list li:first-child {
    border-left: 0;
    padding-left: 0;
  }

  .contact-address__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 3fr) minmax(0, 4fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .contact-dirs__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}