/* ===== 合作与联系页 page-contact ===== */
.page-contact {
  --contact-split-gap: clamp(30px, 4.5vw, 72px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* 面包屑 */
.page-contact .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: clamp(20px, 3vw, 34px);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

.page-contact .crumbs a {
  color: var(--ink-2);
  text-decoration: none;
}

.page-contact .crumbs a:hover,
.page-contact .crumbs a:focus-visible {
  color: var(--lime);
}

/* 首屏 */
.page-contact .contact-hero {
  padding: clamp(24px, 4vw, 46px) 0 clamp(18px, 2.6vw, 28px);
}

.page-contact .contact-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-contact .contact-hero__eyebrow::before {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  background: var(--lime);
}

.page-contact .contact-hero h1 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(29px, 5vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .contact-hero__lead {
  max-width: 66ch;
  margin: clamp(16px, 2vw, 22px) 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.8;
  color: var(--ink-2);
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

/* 首屏宽幅图 */
.page-contact .contact-hero__media {
  margin: 0 0 clamp(30px, 4vw, 54px);
}

.page-contact .contact-hero__media .media__frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.62) brightness(0.72);
  transition: transform 600ms var(--ease), filter 400ms var(--ease);
}

.page-contact .contact-hero__media:hover img {
  transform: scale(1.02);
  filter: saturate(0.78) brightness(0.84);
}

.page-contact .contact-hero__media .media__caption {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}

/* 双栏：左侧速查 + 右侧主体 */
.page-contact .contact-split {
  display: grid;
  gap: clamp(28px, 4vw, 44px);
}

.page-contact .contact-quick {
  border-left: 1px solid var(--line);
  padding-left: clamp(14px, 1.8vw, 22px);
}

.page-contact .contact-quick__title {
  margin: 0 0 18px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.page-contact .contact-quick__item {
  margin-bottom: 18px;
}

.page-contact .contact-quick__label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.page-contact .contact-quick__value {
  display: block;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .contact-quick__value--plain {
  font-family: var(--font-sans);
  line-height: 1.75;
}

/* 区块标题 */
.page-contact .contact-block__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.1vw, 36px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .contact-block__note {
  max-width: 64ch;
  margin: 0 0 clamp(18px, 2.6vw, 30px);
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* 合作方向 */
.page-contact .direction {
  position: relative;
  padding: 20px 0 22px clamp(16px, 2vw, 26px);
  border-top: 1px solid var(--line);
  transition: background-color 240ms var(--ease);
}

.page-contact .direction:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .direction::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--lime);
  opacity: 0;
  transform: scaleY(0.3);
  transform-origin: top;
  transition: opacity 240ms var(--ease), transform 240ms var(--ease);
}

.page-contact .direction:hover,
.page-contact .direction:focus-within {
  background: rgba(200, 255, 77, 0.03);
}

.page-contact .direction:hover::before,
.page-contact .direction:focus-within::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-contact .direction__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-contact .direction__title {
  margin: 8px 0 10px;
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-contact .direction__text {
  max-width: 68ch;
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-2);
}

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

.page-contact .direction__points li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-contact .direction__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--lime);
}

.page-contact .direction__points strong {
  display: block;
  margin-bottom: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
}

/* 协作规模 */
.page-contact .collab {
  margin-top: clamp(40px, 6vw, 78px);
  padding-top: clamp(22px, 3vw, 38px);
  border-top: 1px solid var(--line);
}

.page-contact .collab__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 2.2vw, 26px);
}

.page-contact .collab .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.05;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.page-contact .collab .stat__value--gold {
  color: var(--gold);
}

.page-contact .collab .stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* 联系渠道 */
.page-contact .channels {
  margin-top: clamp(40px, 6vw, 78px);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-contact .contact-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: clamp(6px, 1vw, 14px);
}

.page-contact .contact-table th,
.page-contact .contact-table td {
  padding: 14px 12px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.page-contact .contact-table thead th {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.page-contact .contact-table tbody td {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
  overflow-wrap: anywhere;
}

.page-contact .contact-table tbody td:first-child {
  color: var(--ink);
  letter-spacing: 0.04em;
}

.page-contact .contact-table tbody td strong {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--lime);
}

/* 邮件清单 */
.page-contact .mail {
  margin-top: clamp(40px, 6vw, 78px);
}

.page-contact .mail-tips {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .mail-tip {
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--bg);
}

.page-contact .mail-tip__label {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .mail-tip p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* 流程窄条 */
.page-contact .process {
  position: relative;
  overflow: hidden;
  margin-top: clamp(40px, 6vw, 78px);
  border: 1px solid var(--line);
  background: var(--bg-2);
}

.page-contact .process__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .process__bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.4) brightness(0.42);
}

.page-contact .process__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 20, 16, 0.88), rgba(11, 20, 16, 0.95));
}

.page-contact .process__inner {
  position: relative;
  z-index: 1;
  padding: clamp(20px, 3vw, 40px);
}

.page-contact .process-steps {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-contact .process-step {
  background: rgba(18, 26, 22, 0.92);
}

.page-contact .process-step summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: clamp(15px, 2vw, 22px);
  list-style: none;
  cursor: pointer;
}

.page-contact .process-step summary::-webkit-details-marker {
  display: none;
}

.page-contact .process-step summary:hover .process-step__title {
  color: var(--lime);
}

.page-contact .process-step summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-contact .process-step__num {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-contact .process-step[open] .process-step__num {
  color: var(--gold);
}

.page-contact .process-step__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  transition: color 200ms var(--ease);
}

.page-contact .process-step__more {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-3);
}

.page-contact .process-step__more::before {
  content: "＋";
}

.page-contact .process-step[open] .process-step__more::before {
  content: "－";
}

.page-contact .process-step p {
  margin: 0;
  padding: 0 clamp(15px, 2vw, 22px) clamp(16px, 2vw, 22px);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* 备案与身份 */
.page-contact .records {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  margin-top: clamp(40px, 6vw, 78px);
  padding-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.page-contact .records .contact-block__note {
  margin-bottom: 0;
}

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

.page-contact .record-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

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

.page-contact .record-list__key {
  min-width: 92px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.page-contact .record-list__val {
  font-family: var(--font-mono);
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .record-list__val--plain {
  font-family: var(--font-sans);
  color: var(--ink-2);
}

/* 继续了解 */
.page-contact .contact-next {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 22px;
  margin-top: clamp(34px, 5vw, 62px);
  padding-top: clamp(18px, 2.4vw, 26px);
  border-top: 1px solid var(--line);
}

.page-contact .contact-next__label {
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.page-contact .contact-next a {
  padding-bottom: 2px;
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .contact-next a:hover,
.page-contact .contact-next a:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

/* 移动端：表格转为堆叠行 */
@media (max-width: 639px) {
  .page-contact .contact-table thead {
    display: none;
  }

  .page-contact .contact-table tbody tr {
    display: block;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
  }

  .page-contact .contact-table tbody td {
    display: block;
    padding: 3px 0;
    border-bottom: 0;
  }

  .page-contact .contact-table tbody td:first-child {
    font-size: 12px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-3);
  }
}

/* 桌面端栅格 */
@media (min-width: 720px) {
  .page-contact .direction__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-contact .collab__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-contact .records {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: clamp(28px, 4vw, 64px);
  }
}

@media (min-width: 980px) {
  .page-contact .contact-split {
    grid-template-columns: minmax(220px, 3.6fr) minmax(0, 8.4fr);
    gap: var(--contact-split-gap);
    align-items: start;
  }

  .page-contact .contact-quick {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-contact .direction,
  .page-contact .direction::before,
  .page-contact .contact-hero__media img,
  .page-contact .process-step__title,
  .page-contact .contact-next a {
    transition: none;
  }

  .page-contact .contact-hero__media:hover img {
    transform: none;
  }
}