/* ===== 合作洽谈页 · page-contact ===== */

.page-contact {
  --ct-step-line: 1px;
}

/* ---------- 首屏 ---------- */

.page-contact .contact-hero {
  position: relative;
  isolation: isolate;
  padding: calc(var(--hdr-rail) + var(--hdr-main) + 30px) 0 clamp(44px, 7vw, 76px);
  background:
    radial-gradient(115% 85% at 50% -14%, rgba(123, 92, 224, .20), transparent 60%),
    radial-gradient(70% 55% at 88% 6%, rgba(201, 162, 74, .13), transparent 62%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-void) 100%);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(110, 122, 136, .13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(110, 122, 136, .13) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(78% 76% at 50% 26%, #000 0%, transparent 76%);
  mask-image: radial-gradient(78% 76% at 50% 26%, #000 0%, transparent 76%);
  pointer-events: none;
}

.page-contact .contact-hero__inner {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-contact .contact-hero .breadcrumb {
  margin: 0;
}

.page-contact .contact-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 15em;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--ivory);
  text-shadow: 0 1px 0 rgba(201, 162, 74, .30);
}

.page-contact .contact-hero__lede {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .76);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 6px 0 0;
}

.page-contact .contact-hero__facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 16px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 0 0;
}

.page-contact .contact-hero__fact + .contact-hero__fact {
  border-top: 1px solid var(--line-soft);
  margin-top: 12px;
}

.page-contact .contact-hero__fact dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .10em;
  color: var(--stone);
}

.page-contact .contact-hero__fact dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--ivory);
}

/* ---------- 主体两栏 ---------- */

.page-contact .contact-body {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding-top: clamp(44px, 6vw, 72px);
  padding-bottom: clamp(56px, 8vw, 96px);
}

.page-contact .contact-aside {
  order: -1;
}

.page-contact .contact-main {
  display: flex;
  flex-direction: column;
  gap: clamp(52px, 7vw, 88px);
  min-width: 0;
}

/* ---------- 章节头部 ---------- */

.page-contact .section-head {
  margin-bottom: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .section-head .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-contact .section-desc {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .72);
}

/* ---------- 关系示意图 ---------- */

.page-contact .contact-figure {
  margin: 0 0 28px;
}

.page-contact .contact-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--gold);
  background: var(--bg-panel-2);
}

.page-contact .contact-figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.72;
  color: var(--stone);
}

/* ---------- 三类合作卡 ---------- */

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .coop-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px;
  background: linear-gradient(158deg, rgba(18, 38, 63, .94) 0%, rgba(14, 30, 51, .94) 100%);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--gold);
  transition: transform var(--t-fast) ease, border-color var(--t-fast) ease, box-shadow var(--t-fast) ease;
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 20px 36px -24px rgba(0, 0, 0, .92);
  border-left-color: var(--line-gold);
  border-right-color: var(--line-gold);
  border-bottom-color: var(--line-gold);
}

.page-contact .coop-card--moss {
  border-top-color: var(--moss);
}

.page-contact .coop-card--clay {
  border-top-color: var(--clay);
}

.page-contact .coop-card--violet {
  border-top-color: var(--violet);
}

.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.35;
  color: var(--ivory);
}

.page-contact .coop-card__for,
.page-contact .coop-card__out {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 237, 227, .72);
}

.page-contact .coop-card__out {
  color: var(--gold-lit);
}

.page-contact .coop-card__label {
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--stone);
}

/* ---------- 通用条目列表 ---------- */

.page-contact .coop-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(242, 237, 227, .76);
}

.page-contact .coop-list li {
  position: relative;
  padding-left: 18px;
}

.page-contact .coop-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--gold);
}

/* ---------- 评估关注点 ---------- */

.page-contact .criteria {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line-soft);
}

.page-contact .criteria__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--t-fast) ease;
}

.page-contact .criteria__item:hover {
  background: rgba(18, 38, 63, .55);
}

.page-contact .criteria__num {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.62;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-contact .criteria__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ivory);
}

.page-contact .criteria__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 237, 227, .72);
}

/* ---------- 推进步骤 ---------- */

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

.page-contact .steps__item {
  position: relative;
  margin-left: 18px;
  padding: 0 0 30px 42px;
  border-left: var(--ct-step-line) solid var(--line-soft);
}

.page-contact .steps__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .steps__num {
  position: absolute;
  left: -18px;
  top: -2px;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-lit);
  background: var(--bg-panel);
  border: 1px solid var(--line-gold);
}

.page-contact .steps__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.45;
  color: var(--ivory);
}

.page-contact .steps__time {
  display: inline-block;
  margin: 10px 0 0;
  padding: 2px 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--amber);
  border: 1px solid rgba(224, 138, 60, .42);
}

.page-contact .steps__text {
  margin: 10px 0 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 237, 227, .72);
}

/* ---------- 提交材料面板 ---------- */

.page-contact .submit-panel {
  display: grid;
  grid-template-columns: 1fr;
  background: linear-gradient(160deg, rgba(18, 38, 63, .90) 0%, rgba(10, 22, 38, .96) 100%);
  border: 1px solid var(--line-soft);
  border-top: 3px solid var(--gold);
}

.page-contact .submit-panel__mail {
  padding: 26px 22px;
}

.page-contact .submit-panel__list {
  padding: 26px 22px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .submit-panel__addr {
  margin: 10px 0 0;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--gold-lit);
  word-break: break-all;
  background: rgba(8, 15, 27, .78);
  border: 1px dashed var(--line-gold);
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .submit-panel__hint {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .submit-panel__title {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ivory);
}

.page-contact .submit-panel__privacy {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .submit-panel__privacy a {
  color: var(--violet-lit);
}

/* 编号式条目 */

.page-contact .coop-list--num {
  counter-reset: ct-num;
}

.page-contact .coop-list--num li {
  counter-increment: ct-num;
  padding-left: 32px;
}

.page-contact .coop-list--num li::before {
  content: counter(ct-num, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  background: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 2;
  color: var(--amber);
}

/* ---------- 通道分工 ---------- */

.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 22px;
  background: var(--bg-panel-2);
  border: 1px solid var(--line-soft);
  border-top-width: 3px;
  border-top-style: solid;
}

.page-contact .channel-card--moss {
  border-top-color: var(--moss);
}

.page-contact .channel-card--gold {
  border-top-color: var(--gold);
}

.page-contact .channel-card__title {
  margin: 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.4;
  color: var(--ivory);
}

.page-contact .channel-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 237, 227, .72);
}

.page-contact .channel-card__meta {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .channel-card__meta > div {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-contact .channel-card__meta dt {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
}

.page-contact .channel-card__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ivory);
  word-break: break-all;
}

.page-contact .channel-card__more {
  margin: 4px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--stone);
}

.page-contact .channel-card__more a {
  color: var(--violet-lit);
}

/* ---------- 伙伴类型 ---------- */

.page-contact .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .partner-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px;
  background: linear-gradient(165deg, rgba(18, 38, 63, .86) 0%, rgba(10, 22, 38, .92) 100%);
  border: 1px solid var(--line-soft);
  transition: transform var(--t-fast) ease, border-color var(--t-fast) ease;
}

.page-contact .partner-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-gold);
}

.page-contact .partner-card__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 36px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-lit);
}

.page-contact .partner-card__unit {
  margin-left: 4px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--stone);
}

.page-contact .partner-card__title {
  margin: 4px 0 0;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.45;
  color: var(--ivory);
}

.page-contact .partner-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: rgba(242, 237, 227, .72);
}

.page-contact .partner-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

/* ---------- 常见问答 ---------- */

.page-contact .faq {
  border-top: 1px solid var(--line-soft);
}

.page-contact .faq__item {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .faq__q {
  position: relative;
  display: block;
  padding: 18px 46px 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.62;
  color: var(--ivory);
  transition: color var(--t-fast) ease;
}

.page-contact .faq__q::-webkit-details-marker {
  display: none;
}

.page-contact .faq__q::marker {
  content: "";
}

.page-contact .faq__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--gold);
  transition: color var(--t-fast) ease;
}

.page-contact .faq__item[open] .faq__q::after {
  content: "\2013";
}

.page-contact .faq__q:hover {
  color: var(--gold-lit);
}

.page-contact .faq__q:focus-visible {
  outline: 2px solid var(--gold-lit);
  outline-offset: 3px;
}

.page-contact .faq__a {
  padding: 0 0 20px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(242, 237, 227, .72);
}

.page-contact .faq__a p {
  margin: 0;
}

.page-contact .faq__a a {
  color: var(--violet-lit);
}

/* ---------- 右侧联系卡 ---------- */

.page-contact .contact-card {
  position: relative;
  padding: 24px 22px 22px;
  background: linear-gradient(155deg, rgba(18, 38, 63, .96) 0%, rgba(10, 22, 38, .98) 100%);
  border: 1px solid var(--line-gold);
  border-top: 3px solid var(--gold);
}

.page-contact .contact-card__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .20em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .contact-card__title {
  margin: 10px 0 16px;
  font-family: var(--font-title);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.42;
  color: var(--ivory);
}

.page-contact .contact-card__list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .contact-card__row {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-card__row:first-child {
  padding-top: 0;
  border-top: none;
}

.page-contact .contact-card__row:last-child {
  padding-bottom: 0;
}

.page-contact .contact-card__row dt {
  padding-top: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--stone);
}

.page-contact .contact-card__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.68;
  color: var(--ivory);
  word-break: break-word;
}

.page-contact .contact-card__mono {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold-lit);
  word-break: break-all;
  user-select: all;
  -webkit-user-select: all;
}

.page-contact .contact-card__figure {
  margin: 18px 0 0;
  border: 1px solid var(--line-soft);
}

.page-contact .contact-card__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-contact .contact-card__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.78;
  color: var(--stone);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .contact-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .contact-hero__fact + .contact-hero__fact {
    border-top: none;
    margin-top: 0;
    padding-left: 22px;
    border-left: 1px solid var(--line-soft);
  }
}

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

  .page-contact .criteria__item:nth-child(odd) {
    padding-right: 30px;
  }

  .page-contact .criteria__item:nth-child(even) {
    padding-left: 30px;
  }
}

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

@media (min-width: 800px) {
  .page-contact .submit-panel {
    grid-template-columns: 0.85fr 1.15fr;
  }

  .page-contact .submit-panel__list {
    border-top: none;
    border-left: 1px solid var(--line-soft);
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 336px;
    gap: 56px;
    align-items: start;
  }

  .page-contact .contact-aside {
    order: 0;
  }

  .page-contact .contact-card {
    position: sticky;
    top: calc(var(--hdr-rail) + var(--hdr-main) + 22px);
  }
}

@media (min-width: 1080px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .partner-card,
  .page-contact .criteria__item,
  .page-contact .faq__q {
    transition: none;
  }

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