.page-contact {
  --pc-accent: var(--yb-lava);
  --pc-radius: 3px;
  display: block;
  background: var(--yb-deep);
}

.page-contact > section {
  position: relative;
  padding: clamp(48px, 8vw, 100px) 0;
}

/* ---------- 面包屑 ---------- */
.page-contact .yb-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--yb-on-dark-soft);
  margin: 0 0 clamp(24px, 4vw, 48px);
}

.page-contact .yb-breadcrumb .yb-sublink {
  color: var(--yb-on-dark-soft);
}

.page-contact .yb-breadcrumb .yb-sublink:hover {
  color: var(--yb-cyan);
}

.page-contact .yb-breadcrumb__sep {
  color: var(--yb-sand);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding-top: clamp(38px, 6vw, 76px);
  padding-bottom: clamp(46px, 7vw, 92px);
  overflow: hidden;
  background:
    radial-gradient(88% 72% at 88% 4%, rgba(255, 90, 31, .18), transparent 60%),
    radial-gradient(70% 62% at 2% 98%, rgba(34, 224, 200, .10), transparent 62%);
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(124, 141, 166, .07) 0 1px, transparent 1px 128px);
  pointer-events: none;
}

.page-contact .contact-hero > .yb-container {
  position: relative;
  z-index: 1;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-hero__title {
  margin: clamp(14px, 2vw, 22px) 0 0;
  font-size: clamp(40px, 6.6vw, 92px);
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--yb-paper);
}

.page-contact .contact-hero__title em {
  display: block;
  font-style: normal;
  color: var(--yb-lava);
}

.page-contact .yb-lead {
  max-width: 46ch;
  color: var(--yb-on-dark);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
}

.page-contact .contact-kpis {
  margin: clamp(22px, 3vw, 34px) 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--yb-line);
  border-top: 1px solid var(--yb-line);
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-kpis__item {
  background: rgba(11, 30, 51, .88);
  padding: 14px 14px 16px;
}

.page-contact .contact-kpis__item dt {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--yb-on-dark-soft);
}

.page-contact .contact-kpis__item dd {
  margin: 7px 0 0;
  font-family: var(--yb-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(13px, 1.4vw, 16px);
  color: var(--yb-paper);
}

/* ---------- 章节标题 ---------- */
.page-contact .contact-h2 {
  margin: 14px 0 0;
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--yb-paper);
}

.page-contact .contact-h2--dark {
  color: var(--yb-ink);
}

/* ---------- 通道选择 ---------- */
.page-contact .contact-channels {
  background: var(--yb-ink);
  border-top: 1px solid var(--yb-line);
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
  margin-top: clamp(26px, 3.4vw, 44px);
}

.page-contact .contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 30px);
  background: rgba(27, 62, 99, .34);
  border: 1px solid var(--yb-line);
  border-radius: var(--pc-radius);
  transition: border-color .24s var(--yb-ease), transform .24s var(--yb-ease), background-color .24s var(--yb-ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--yb-lava);
  transform: translateY(-4px);
  background: rgba(27, 62, 99, .48);
}

.page-contact .channel-card--primary {
  border-color: rgba(255, 90, 31, .62);
  background:
    linear-gradient(135deg, rgba(255, 90, 31, .16), transparent 62%),
    rgba(27, 62, 99, .42);
}

.page-contact .channel-card--primary::before {
  content: "";
  position: absolute;
  top: -1px;
  left: clamp(20px, 2.6vw, 30px);
  width: 56px;
  height: 2px;
  background: var(--yb-sand);
}

.page-contact .channel-card__flag {
  color: var(--yb-sand);
  margin: 0;
}

.page-contact .channel-card__title {
  margin: 0;
  font-size: clamp(21px, 2.4vw, 28px);
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--yb-paper);
}

.page-contact .channel-card__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yb-on-dark);
}

.page-contact .channel-card__list {
  margin: 2px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .channel-card__list li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--yb-on-dark-soft);
}

.page-contact .channel-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 1px;
  background: var(--yb-cyan);
}

.page-contact .channel-card__list .yb-sublink {
  color: var(--yb-cyan);
}

.page-contact .channel-card__list .yb-sublink:hover {
  color: var(--yb-paper);
}

.page-contact .channel-card__hint {
  margin: auto 0 0;
  padding-top: 10px;
  border-top: 1px solid var(--yb-line);
  font-size: clamp(13px, 1.4vw, 15px);
  letter-spacing: -.01em;
  color: var(--yb-cyan);
  word-break: break-all;
}

.page-contact .channel-card__cta {
  align-self: flex-start;
  margin-top: 6px;
}

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

.page-contact .contact-channels__figure .yb-figure__media {
  overflow: hidden;
  border: 1px solid var(--yb-line);
  border-radius: var(--pc-radius);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-contact .yb-figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .yb-figure__cap {
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--yb-mist);
}

/* ---------- 联系信息 ---------- */
.page-contact .contact-info {
  background: var(--yb-paper);
  color: var(--yb-on-paper);
}

.page-contact .contact-info__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
}

.page-contact .contact-info .yb-index {
  color: rgba(201, 60, 15, .82);
}

.page-contact .contact-facts {
  margin: clamp(22px, 3vw, 34px) 0 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-fact {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-top: 1px solid rgba(8, 17, 28, .14);
}

.page-contact .contact-fact:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .contact-fact dt {
  font-size: 11px;
  letter-spacing: .18em;
  color: rgba(8, 17, 28, .5);
}

.page-contact .contact-fact dd {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 18px;
}

.page-contact .contact-fact__val {
  font-family: var(--yb-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 3vw, 30px);
  letter-spacing: -.02em;
  color: var(--yb-deep);
  word-break: break-all;
}

.page-contact .contact-fact__val--plain {
  font-family: var(--yb-font-body);
  font-size: clamp(16px, 2.1vw, 22px);
  letter-spacing: 0;
  word-break: normal;
}

.page-contact .contact-fact__act {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.page-contact .contact-fact__act .yb-cta--ghost {
  padding: 5px 12px;
  font-size: 12px;
  border-color: rgba(8, 17, 28, .3);
  color: var(--yb-deep);
}

.page-contact .contact-fact__act .yb-cta--ghost:hover {
  border-color: var(--yb-lava);
  color: var(--yb-lava-dark);
}

.page-contact .yb-copy__hint {
  display: inline-block;
  min-height: 1em;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--yb-lava-dark);
}

.page-contact .contact-info__note {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(8, 17, 28, .14);
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(8, 17, 28, .62);
}

.page-contact .contact-info__figure {
  margin: 0;
  align-self: stretch;
}

.page-contact .contact-info__figure .yb-figure__media {
  overflow: hidden;
  border-radius: var(--pc-radius);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.page-contact .contact-info__figure .yb-figure__cap {
  color: rgba(8, 17, 28, .5);
}

/* ---------- 合作 ---------- */
.page-contact .contact-partner {
  background: var(--yb-deep);
  border-top: 1px solid var(--yb-line);
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .contact-partner__head {
  max-width: 62ch;
}

.page-contact .contact-partner__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  margin-top: clamp(28px, 3.6vw, 48px);
}

.page-contact .partner-block__title {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--yb-sand);
}

.page-contact .partner-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .partner-list li {
  display: grid;
  gap: 7px;
  padding: 18px 0;
  border-bottom: 1px solid var(--yb-line);
}

.page-contact .partner-list li:first-child {
  border-top: 1px solid var(--yb-line);
}

.page-contact .partner-list__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--yb-paper);
}

.page-contact .partner-list__desc {
  font-size: 14px;
  line-height: 1.75;
  color: var(--yb-on-dark);
}

.page-contact .partner-prep {
  margin: 0;
  padding-left: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-contact .partner-prep li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--yb-on-dark);
}

.page-contact .partner-prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 10px;
  height: 2px;
  background: var(--yb-lava);
}

.page-contact .partner-block__note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yb-on-dark-soft);
}

/* ---------- 服务范围 ---------- */
.page-contact .contact-scope {
  background: var(--yb-paper);
}

.page-contact .contact-scope .yb-index {
  color: rgba(201, 60, 15, .82);
}

.page-contact .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 38px);
  margin-top: clamp(26px, 3.4vw, 46px);
}

.page-contact .scope-col {
  padding: clamp(20px, 2.6vw, 30px);
  border: 1px solid rgba(8, 17, 28, .14);
  border-radius: var(--pc-radius);
}

.page-contact .scope-col--yes {
  background: rgba(255, 90, 31, .06);
  border-color: rgba(201, 60, 15, .3);
}

.page-contact .scope-col--else {
  background: rgba(124, 141, 166, .1);
}

.page-contact .scope-col__title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 600;
  color: var(--yb-ink);
}

.page-contact .scope-col__dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border-radius: 50%;
}

.page-contact .scope-col--yes .scope-col__dot {
  background: var(--yb-lava);
}

.page-contact .scope-col--else .scope-col__dot {
  background: var(--yb-mist);
}

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

.page-contact .scope-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(8, 17, 28, .74);
}

.page-contact .scope-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 7px;
}

.page-contact .scope-col--yes .scope-list li::before {
  background: var(--yb-lava-dark);
}

.page-contact .scope-col--else .scope-list li::before {
  background: var(--yb-mist);
  border-radius: 50%;
}

.page-contact .scope-list .yb-sublink {
  color: var(--yb-lava-dark);
  border-bottom: 1px solid rgba(201, 60, 15, .4);
}

.page-contact .scope-list .yb-sublink:hover {
  color: var(--yb-ink);
}

/* ---------- 收束 ---------- */
.page-contact .contact-close {
  background: var(--yb-ink);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-contact .contact-close__panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 38px);
  padding: clamp(28px, 4vw, 52px);
  background:
    linear-gradient(118deg, rgba(255, 90, 31, .18), transparent 58%),
    var(--yb-deep);
  border: 1px solid var(--yb-line-gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), calc(100% - 34px) 100%, 0 100%);
}

.page-contact .contact-close__title {
  margin: 0 0 14px;
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 300;
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--yb-paper);
}

.page-contact .contact-close__text p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yb-on-dark);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-contact .contact-kpis {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-contact .contact-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .channel-card--primary {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: end;
  }

  .page-contact .contact-partner__grid {
    grid-template-columns: 7fr 5fr;
  }

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

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

@media (min-width: 1024px) {
  .page-contact .contact-channels__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-contact .channel-card--primary {
    grid-column: 1 / -1;
  }

  .page-contact .contact-info__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: stretch;
  }

  .page-contact .contact-info__figure {
    display: flex;
    flex-direction: column;
  }

  .page-contact .contact-info__figure .yb-figure__media {
    flex: 1 1 auto;
    min-height: 320px;
  }

  .page-contact .contact-info__figure .yb-figure__media img {
    height: 100%;
  }
}

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

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