.page-contact {
  --co-rule: rgba(16, 26, 23, .14);
  --co-rule-soft: rgba(246, 241, 228, .18);
  --co-fill: rgba(255, 255, 255, .58);
  --co-shadow-soft: 0 1px 0 rgba(16, 26, 23, .04), 0 14px 30px rgba(16, 26, 23, .07);
  color: var(--yq-ink);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  padding: clamp(24px, 5vw, 64px) 0 clamp(18px, 3vw, 32px);
}

.page-contact .co-hero__grid {
  margin-top: clamp(18px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 42px);
}

.page-contact .co-hero__eyebrow {
  margin: 0 0 12px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--yq-muted);
}

.page-contact .co-hero__title {
  margin: 0;
  font-size: clamp(38px, 8vw, 78px);
  line-height: 1.02;
  font-weight: 900;
  letter-spacing: -.03em;
}

.page-contact .co-hero__lede {
  margin: clamp(14px, 2vw, 22px) 0 0;
  max-width: 40em;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--yq-ink-soft);
}

/* ---------- 快速定位 ---------- */
.page-contact .co-quick {
  border-top: 2px solid var(--yq-ink);
  padding-top: 14px;
}

.page-contact .co-quick__title {
  margin: 0 0 10px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--yq-muted);
}

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

.page-contact .co-quick__item {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  column-gap: 10px;
  row-gap: 3px;
  padding: 11px 0;
  border-bottom: 1px solid var(--co-rule);
}

.page-contact .co-quick__dot {
  align-self: start;
  margin-top: 7px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yq-window);
}

.page-contact .co-quick__dot--biz {
  background: var(--yq-ligue1);
}

.page-contact .co-quick__dot--help {
  background: var(--yq-line);
}

.page-contact .co-quick__label {
  grid-column: 2;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
}

.page-contact .co-quick__hint {
  grid-column: 2;
  font-size: 13px;
  line-height: 1.62;
  color: var(--yq-muted);
}

/* ---------- 联系通道 + 流程 ---------- */
.page-contact .co-main {
  padding: clamp(20px, 3.4vw, 46px) 0 clamp(30px, 5vw, 64px);
}

.page-contact .co-main__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.8vw, 32px);
}

.page-contact .co-channel {
  position: relative;
  overflow: hidden;
  border-radius: var(--yq-radius);
  padding: clamp(22px, 3.4vw, 40px);
  background:
    radial-gradient(115% 130% at 92% -14%, rgba(232, 163, 61, .24), transparent 56%),
    linear-gradient(158deg, var(--yq-green) 0%, var(--yq-green-deep) 100%);
  color: var(--yq-paper);
  box-shadow: var(--yq-shadow);
}

.page-contact .co-channel__eyebrow {
  margin: 0 0 10px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--yq-window);
}

.page-contact .co-channel__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
}

.page-contact .co-channel__text {
  margin: 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--yq-on-green);
}

.page-contact .co-channel__rows {
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
}

.page-contact .co-line {
  display: grid;
  grid-template-columns: 1fr;
  gap: 5px;
  padding: 15px 0;
  border-top: 1px solid var(--co-rule-soft);
}

.page-contact .co-line__label {
  margin: 0;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--yq-on-green);
}

.page-contact .co-line__value {
  margin: 0;
  font-family: var(--yq-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(17px, 2.2vw, 23px);
  font-weight: 600;
  line-height: 1.4;
  color: var(--yq-paper);
  user-select: all;
  overflow-wrap: anywhere;
}

.page-contact .co-line__value--addr {
  font-family: var(--yq-font-sans);
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 500;
  line-height: 1.72;
  letter-spacing: 0;
  user-select: text;
}

.page-contact .co-channel__hint {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--yq-muted);
}

.page-contact .co-flow-col {
  border-top: 2px solid var(--yq-ink);
  padding-top: 16px;
}

.page-contact .co-flow__eyebrow {
  margin: 0 0 6px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--yq-muted);
}

.page-contact .co-flow__title {
  margin: 0;
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 800;
  line-height: 1.3;
}

.page-contact .co-flow {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-contact .co-step {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  column-gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--co-rule);
}

.page-contact .co-step__num {
  grid-column: 1;
  font-family: var(--yq-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--yq-green);
}

.page-contact .co-step__title {
  grid-column: 2;
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
}

.page-contact .co-step__text {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--yq-ink-soft);
}

/* ---------- 商务合作 ---------- */
.page-contact .co-coop-section {
  padding: clamp(28px, 4.5vw, 62px) 0;
  background: linear-gradient(180deg, rgba(11, 43, 35, .06), rgba(11, 43, 35, 0));
}

.page-contact .co-sec-head {
  max-width: 46em;
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-contact .co-sec-head__eyebrow {
  margin: 0 0 8px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--yq-muted);
}

.page-contact .co-sec-head__title {
  margin: 0;
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-contact .co-sec-head__lede {
  margin: 12px 0 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--yq-ink-soft);
}

.page-contact .co-coop {
  position: relative;
}

.page-contact .co-coop__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.page-contact .co-coop__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .co-coop__tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--co-rule);
  border-radius: var(--yq-pill);
  background: rgba(255, 255, 255, .58);
  font-size: 14px;
  font-weight: 600;
  color: var(--yq-ink);
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-contact .co-coop__tab:hover {
  border-color: var(--yq-line);
  transform: translateY(-1px);
}

.page-contact .co-coop__radio:focus-visible ~ .co-coop__tabs {
  outline: 2px solid var(--yq-ligue1);
  outline-offset: 4px;
  border-radius: 6px;
}

.page-contact #coop-data:checked ~ .co-coop__tabs [for="coop-data"],
.page-contact #coop-academy:checked ~ .co-coop__tabs [for="coop-academy"],
.page-contact #coop-brand:checked ~ .co-coop__tabs [for="coop-brand"],
.page-contact #coop-media:checked ~ .co-coop__tabs [for="coop-media"] {
  background: var(--yq-green);
  border-color: var(--yq-green);
  color: var(--yq-paper);
  transform: none;
}

.page-contact .co-coop__panels {
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-contact .co-coop__panel {
  display: none;
  border: 1px solid var(--co-rule);
  border-radius: var(--yq-radius);
  background: var(--co-fill);
  padding: clamp(20px, 3vw, 34px);
  box-shadow: var(--yq-shadow);
  gap: clamp(20px, 3vw, 40px);
}

.page-contact #coop-data:checked ~ .co-coop__panels .co-coop__panel:nth-child(1),
.page-contact #coop-academy:checked ~ .co-coop__panels .co-coop__panel:nth-child(2),
.page-contact #coop-brand:checked ~ .co-coop__panels .co-coop__panel:nth-child(3),
.page-contact #coop-media:checked ~ .co-coop__panels .co-coop__panel:nth-child(4) {
  display: grid;
  grid-template-columns: 1fr;
  animation: co-panel-in .26s ease both;
}

@keyframes co-panel-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

.page-contact .co-coop__name {
  margin: 0 0 10px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  line-height: 1.25;
}

.page-contact .co-coop__desc {
  margin: 0;
  max-width: 36em;
  font-size: 15px;
  line-height: 1.8;
  color: var(--yq-ink-soft);
}

.page-contact .co-coop__points {
  border-left: 2px solid var(--yq-line);
  padding-left: clamp(14px, 2vw, 22px);
}

.page-contact .co-coop__points-title {
  margin: 0 0 10px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--yq-muted);
}

.page-contact .co-coop__points ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .co-coop__points li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .co-coop__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 1px;
  background: var(--yq-window);
}

/* ---------- 办公地址 ---------- */
.page-contact .co-place {
  padding: clamp(12px, 2vw, 26px) 0 clamp(30px, 4.5vw, 60px);
}

.page-contact .co-place__card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--co-rule);
  border-radius: var(--yq-radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, .74), rgba(255, 255, 255, .32));
  box-shadow: var(--co-shadow-soft);
  transition: border-color .2s ease, box-shadow .2s ease;
}

.page-contact .co-place__card:hover,
.page-contact .co-place__card:focus-within {
  border-color: var(--yq-line);
  box-shadow: var(--yq-shadow-lift);
}

.page-contact .co-place__pattern {
  position: absolute;
  left: -60px;
  bottom: -72px;
  width: 360px;
  height: 240px;
  color: var(--yq-line);
  opacity: .16;
  pointer-events: none;
}

.page-contact .co-place__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
}

.page-contact .co-place__meta {
  padding: clamp(22px, 3vw, 40px);
}

.page-contact .co-place__eyebrow {
  margin: 0;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--yq-muted);
}

.page-contact .co-place__addr {
  margin: 8px 0 0;
  font-size: clamp(19px, 2.4vw, 27px);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -.01em;
}

.page-contact .co-place__hours {
  margin: 14px 0 0;
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--yq-ink-soft);
}

.page-contact .co-place__hours::before {
  content: "";
  flex: none;
  margin-top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--yq-window);
  box-shadow: 0 0 0 4px rgba(232, 163, 61, .2);
}

.page-contact .co-place__note {
  margin: 12px 0 0;
  max-width: 30em;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yq-muted);
}

.page-contact .co-place__media {
  min-height: 200px;
}

/* ---------- 纠错与响应 ---------- */
.page-contact .co-fix {
  padding: clamp(28px, 4.5vw, 64px) 0 clamp(38px, 5vw, 80px);
  border-top: 1px solid var(--co-rule);
}

.page-contact .co-fix__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.4vw, 48px);
}

.page-contact .co-fix__list {
  list-style: none;
  counter-reset: cofix;
  margin: 0;
  padding: 0;
}

.page-contact .co-fix__item {
  counter-increment: cofix;
  position: relative;
  padding: 16px 0 16px 52px;
  border-top: 1px solid var(--co-rule);
}

.page-contact .co-fix__item:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-contact .co-fix__item::before {
  content: counter(cofix, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--yq-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--yq-muted);
}

.page-contact .co-fix__item:first-child::before {
  top: 4px;
}

.page-contact .co-fix__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.page-contact .co-fix__text {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--yq-ink-soft);
}

.page-contact .co-response {
  border: 1px solid var(--co-rule);
  border-radius: var(--yq-radius);
  padding: clamp(20px, 2.8vw, 30px);
  background: rgba(255, 255, 255, .56);
  box-shadow: var(--co-shadow-soft);
}

.page-contact .co-response__eyebrow {
  margin: 0 0 14px;
  font-family: var(--yq-font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--yq-muted);
}

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

.page-contact .co-response__item {
  padding: 15px 0;
  border-top: 1px solid var(--co-rule);
}

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

.page-contact .co-response__key {
  margin: 0;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--yq-muted);
}

.page-contact .co-response__val {
  margin: 4px 0 0;
  font-family: var(--yq-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(18px, 2.2vw, 23px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--yq-ink);
}

.page-contact .co-response__note {
  margin: 7px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yq-ink-soft);
}

.page-contact .co-fix__media {
  margin: clamp(18px, 2.4vw, 26px) 0 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .co-line {
    grid-template-columns: 96px minmax(0, 1fr);
    align-items: baseline;
    column-gap: 20px;
  }

  .page-contact .co-line__label {
    letter-spacing: .04em;
  }
}

@media (min-width: 880px) {
  .page-contact .co-place__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: stretch;
  }
}

@media (min-width: 960px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .82fr);
    align-items: end;
  }

  .page-contact .co-main__grid {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: start;
  }

  .page-contact .co-fix__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }
}

@media (min-width: 800px) {
  .page-contact #coop-data:checked ~ .co-coop__panels .co-coop__panel:nth-child(1),
  .page-contact #coop-academy:checked ~ .co-coop__panels .co-coop__panel:nth-child(2),
  .page-contact #coop-brand:checked ~ .co-coop__panels .co-coop__panel:nth-child(3),
  .page-contact #coop-media:checked ~ .co-coop__panels .co-coop__panel:nth-child(4) {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }
}

@media (max-width: 480px) {
  .page-contact .co-coop__tab {
    padding: 8px 13px;
    font-size: 13px;
  }

  .page-contact .co-fix__item {
    padding-left: 42px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-coop__tab,
  .page-contact .co-coop__panel,
  .page-contact .co-place__card {
    transition: none;
    animation: none;
  }
}