.page-contact {
  background: var(--c-ink);
  color: var(--c-snow);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: calc(var(--sk-header-h) + 2rem) 0 var(--sk-section);
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(43, 227, 163, 0.18) 0%, rgba(43, 227, 163, 0) 55%),
    linear-gradient(180deg, var(--c-deep) 0%, var(--c-ink) 72%);
  border-bottom: 1px solid var(--c-line-soft);
  overflow: hidden;
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -52px;
  width: 130%;
  height: 120px;
  background: linear-gradient(90deg, rgba(43, 227, 163, 0.22), rgba(255, 194, 75, 0.14) 55%, transparent);
  transform: skewY(-2.4deg);
  opacity: 0.55;
  pointer-events: none;
}

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

.page-contact .co-hero__grid {
  display: grid;
  gap: var(--sk-gap);
  margin-top: 1.75rem;
}

.page-contact .co-hero__title {
  font-family: var(--f-display);
  font-size: var(--fs-display);
  font-weight: 800;
  line-height: 0.94;
  letter-spacing: -0.02em;
  margin: 0.5rem 0 1.1rem;
  color: var(--c-snow);
}

.page-contact .co-hero__lede {
  max-width: 54ch;
  margin: 0;
  color: var(--c-mist);
  font-size: 1.02rem;
  line-height: 1.95;
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-contact .co-quick {
  display: grid;
  gap: 0.9rem;
  padding: clamp(1.1rem, 3vw, 1.6rem);
  background: var(--c-night);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-contact .co-quick__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding-top: 0.9rem;
  border-top: 1px solid var(--c-line-soft);
}

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

.page-contact .co-quick__num {
  font-family: var(--f-mono);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-amber);
}

.page-contact .co-quick__label {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 通用区块标题 ---------- */
.page-contact .co-head {
  max-width: 64ch;
}

.page-contact .co-head h2 {
  font-family: var(--f-display);
  font-size: var(--fs-title);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin: 0.6rem 0 0.9rem;
  color: var(--c-snow);
}

.page-contact .co-head p {
  margin: 0;
  color: var(--c-mist);
  line-height: 1.95;
}

/* ---------- 合作方式 ---------- */
.page-contact .co-types {
  display: grid;
  gap: var(--sk-gap);
  margin-top: 2rem;
}

.page-contact .co-tabs {
  background: var(--c-night);
  border: 1px solid var(--c-line);
  padding: clamp(1rem, 2.6vw, 1.5rem);
}

.page-contact .co-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0 0 1.2rem;
  padding: 0 0 0.9rem;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-contact .co-tabs__btn {
  appearance: none;
  background: transparent;
  border: 1px solid var(--c-line);
  border-radius: var(--sk-radius);
  color: var(--c-mist);
  font-family: var(--f-body);
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: color var(--dur) var(--ease-out), border-color var(--dur) var(--ease-out),
    background-color var(--dur) var(--ease-out);
}

.page-contact .co-tabs__btn:hover {
  color: var(--c-glow);
  border-color: var(--c-mint-28);
}

.page-contact .co-tabs__btn[aria-selected="true"] {
  background: var(--c-mint-12);
  border-color: var(--c-mint);
  color: var(--c-snow);
  box-shadow: inset 2px 2px 0 var(--c-mint);
}

.page-contact .co-tabs__btn:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 2px;
}

.page-contact .co-tabs__panel {
  padding-top: 0.25rem;
}

.page-contact .co-tabs__panel + .co-tabs__panel {
  margin-top: 1.6rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--c-line-soft);
}

.page-contact .co-type__title {
  font-family: var(--f-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin: 0.2rem 0 0.9rem;
  color: var(--c-snow);
}

.page-contact .co-type__row {
  display: grid;
  gap: 0.3rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--c-line-soft);
}

.page-contact .co-type__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .co-type__key {
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-mint);
}

.page-contact .co-type__val {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--c-mist);
}

.page-contact .co-types__media {
  margin: 0;
}

.page-contact .co-types__media .media-frame {
  border: 1px solid var(--c-line);
}

.page-contact .co-types__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-types__media figcaption {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 联系渠道 ---------- */
.page-contact .co-contact {
  background: var(--c-night);
  border-top: 1px solid var(--c-line-soft);
  border-bottom: 1px solid var(--c-line-soft);
}

.page-contact .co-contact__media {
  margin: 0 0 2rem;
}

.page-contact .co-contact__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
  border: 1px solid var(--c-line-soft);
}

.page-contact .co-cards {
  display: grid;
  gap: 0.85rem;
  margin-top: 2rem;
}

.page-contact .co-card {
  padding: 1.1rem 1.15rem 1.25rem;
  background: var(--c-ink);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-contact .co-card__key {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0 0.6rem;
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-contact .co-card__val {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-snow);
  overflow-wrap: anywhere;
}

.page-contact .co-card--wide .co-card__val {
  font-family: var(--f-body);
  font-weight: 500;
  font-size: 0.95rem;
}

.page-contact .co-card__hint {
  margin: 0.6rem 0 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 响应时效 ---------- */
.page-contact .co-timeline {
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 0;
}

.page-contact .co-timeline__step {
  padding: 1.1rem 1.1rem 1.2rem;
  background: linear-gradient(180deg, rgba(14, 34, 51, 0.92), rgba(11, 31, 26, 0.92));
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-mint);
}

.page-contact .co-timeline__step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  display: block;
  margin-bottom: 0.55rem;
  font-family: var(--f-mono);
  font-size: var(--fs-index);
  letter-spacing: 0.18em;
  color: var(--c-amber);
}

.page-contact .co-timeline__title {
  margin: 0 0 0.4rem;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--c-snow);
}

.page-contact .co-timeline__text {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--c-mist);
}

/* ---------- 咨询准备清单 ---------- */
.page-contact .co-checklist {
  display: grid;
  gap: 0.6rem;
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.page-contact .co-check {
  display: flex;
  align-items: flex-start;
  gap: 0.8rem;
  padding: 0.95rem 1rem;
  background: var(--c-night);
  border: 1px solid var(--c-line-soft);
  cursor: pointer;
  transition: border-color var(--dur) var(--ease-out), background-color var(--dur) var(--ease-out);
}

.page-contact .co-check:hover {
  border-color: var(--c-mint-28);
  background: rgba(43, 227, 163, 0.06);
}

.page-contact .co-check input {
  flex: 0 0 auto;
  width: 1.05rem;
  height: 1.05rem;
  margin: 0.18rem 0 0;
  accent-color: var(--c-mint);
  cursor: pointer;
}

.page-contact .co-check input:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 2px;
}

.page-contact .co-check__text {
  display: block;
}

.page-contact .co-check__title {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-snow);
}

.page-contact .co-check__desc {
  display: block;
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 合作范围 ---------- */
.page-contact .co-scope {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.page-contact .co-scope__col {
  padding: clamp(1.1rem, 2.6vw, 1.6rem);
  border: 1px solid var(--c-line);
}

.page-contact .co-scope__col--in {
  background: var(--c-mint-12);
  border-color: var(--c-mint-28);
}

.page-contact .co-scope__col--out {
  background: var(--c-night);
}

.page-contact .co-scope__col h3 {
  font-family: var(--f-display);
  font-size: var(--fs-h3);
  font-weight: 700;
  margin: 0 0 0.9rem;
  color: var(--c-snow);
}

.page-contact .co-scope__list {
  display: grid;
  gap: 0.6rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .co-scope__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-contact .co-scope__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.64em;
  width: 7px;
  height: 2px;
  background: var(--c-mint);
}

.page-contact .co-scope__col--out .co-scope__list li::before {
  background: var(--c-amber);
}

/* ---------- 下一步链接 ---------- */
.page-contact .co-next {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.6rem;
}

.page-contact .co-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1.1rem;
  border: 1px solid var(--c-line);
  color: var(--c-snow);
  font-size: 0.92rem;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease-out), color var(--dur) var(--ease-out),
    background-color var(--dur) var(--ease-out);
}

.page-contact .co-next__link:hover,
.page-contact .co-next__link:focus-visible {
  border-color: var(--c-mint);
  background: var(--c-mint-12);
  color: var(--c-glow);
}

.page-contact .co-next__link:focus-visible {
  outline: 2px solid var(--c-amber);
  outline-offset: 2px;
}

.page-contact .co-next__arrow {
  font-family: var(--f-mono);
  color: var(--c-mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-contact .co-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-contact .co-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 820px) {
  .page-contact .co-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

@media (min-width: 860px) {
  .page-contact .co-scope {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem;
  }
}

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.8fr);
    align-items: end;
    gap: clamp(1.5rem, 4vw, 3.5rem);
  }

  .page-contact .co-types {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1040px) {
  .page-contact .co-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .co-contact__media img {
    max-height: 380px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact *,
  .page-contact *::before,
  .page-contact *::after {
    animation-duration: 1ms !important;
    transition-duration: 1ms !important;
  }
}