.page-contact {
  padding-bottom: clamp(56px, 8vw, 112px);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  margin-top: clamp(18px, 3vw, 34px);
  padding: clamp(26px, 4.5vw, 56px) clamp(20px, 4vw, 52px) clamp(30px, 5vw, 64px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background:
    radial-gradient(760px 420px at 90% 0%, rgba(255, 106, 43, 0.14), transparent 66%),
    radial-gradient(600px 460px at 2% 100%, rgba(0, 229, 199, 0.08), transparent 68%),
    var(--ink-700);
  overflow: hidden;
}

.page-contact .co-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(0, 229, 199, 0) 55%, var(--orange));
  opacity: 0.7;
  pointer-events: none;
}

.page-contact .co-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .co-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-contact .co-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 50px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .co-hero__lead {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .co-hero__anchor {
  position: relative;
  padding: 20px 22px 20px 20px;
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, var(--orange-wash), rgba(255, 106, 43, 0) 88%);
}

.page-contact .co-hero__anchor-label {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.page-contact .co-hero__anchor-num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 5.5vw, 44px);
  line-height: 1;
  letter-spacing: -0.01em;
  white-space: nowrap;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-hero__anchor-meta {
  margin: 14px 0 0;
  max-width: 34ch;
  font-size: 13px;
  line-height: 1.75;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }
}

/* ---------- 章节通用 ---------- */
.page-contact .co-section {
  margin-top: clamp(56px, 8vw, 112px);
}

.page-contact .co-head {
  display: grid;
  gap: 10px;
  padding-bottom: 20px;
  margin-bottom: clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .co-head__no {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 0.85;
  letter-spacing: -0.02em;
  color: rgba(124, 140, 255, 0.45);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .co-head__lead {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-contact .co-head {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
  .page-contact .co-head__no {
    padding-top: 4px;
  }
}

/* ---------- 图片 ---------- */
.page-contact .co-still {
  margin: 0 0 clamp(26px, 4vw, 46px);
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  aspect-ratio: 16 / 7;
  background: var(--ink-800);
}

.page-contact .co-still .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 标签页 ---------- */
.page-contact .co-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .co-tabs .tabs__tab {
  flex: 0 1 auto;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-contact .co-tabs .tabs__tab:hover {
  color: var(--text);
  border-color: var(--glass-border);
}

.page-contact .co-tabs .tabs__tab[aria-selected="true"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact .co-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-contact .co-tabs .tabs__panel + .tabs__panel {
  margin-top: 0;
}

/* ---------- 合作方向面板 ---------- */
.page-contact .co-dir {
  display: grid;
  gap: clamp(22px, 3vw, 28px);
}

.page-contact .co-dir__fit {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: var(--orange);
}

.page-contact .co-dir__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.3;
  color: var(--text);
}

.page-contact .co-dir__text {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .co-dir__link {
  display: inline-block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 199, 0.35);
  padding-bottom: 2px;
  transition: border-color 160ms ease;
}

.page-contact .co-dir__link:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .co-dir__facts {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--line);
}

.page-contact .co-dir__facts li {
  padding: 16px 18px;
  background: var(--ink-700);
}

.page-contact .co-dir__fact-num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 26px;
  line-height: 1.1;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-dir__fact-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-dim);
}

@media (min-width: 980px) {
  .page-contact .co-dir {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }
}

/* ---------- 流程 ---------- */
.page-contact .co-flow {
  position: relative;
  display: grid;
  gap: 14px;
  padding-left: 34px;
}

.page-contact .co-flow::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan), rgba(0, 229, 199, 0.14));
}

.page-contact .co-flow__node {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-700);
  transition: border-color 160ms ease, background-color 160ms ease;
}

.page-contact .co-flow__node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 24px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-800);
  border: 2px solid var(--cyan);
}

.page-contact .co-flow__node[open] {
  border-color: var(--glass-border);
  background:
    linear-gradient(180deg, rgba(0, 229, 199, 0.07), rgba(0, 229, 199, 0) 62%),
    var(--ink-700);
}

.page-contact .co-flow__summary {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .co-flow__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
  border-radius: var(--radius);
}

.page-contact .co-flow__no {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 19px;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-contact .co-flow__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .co-flow__dur {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
  white-space: nowrap;
}

.page-contact .co-flow__detail {
  margin: 0 20px;
  padding: 16px 0 20px;
  border-top: 1px solid var(--line-soft);
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-contact .co-flow__detail p {
  margin: 0;
  max-width: 62ch;
}

.page-contact .co-flow__detail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 199, 0.35);
}

.page-contact .co-flow__detail a:hover {
  border-bottom-color: var(--cyan);
}

@media (min-width: 900px) {
  .page-contact .co-flow {
    padding-left: 48px;
  }
  .page-contact .co-flow::before {
    left: 9px;
  }
  .page-contact .co-flow__node::before {
    left: -43px;
  }
  .page-contact .co-flow__detail {
    padding-left: 56px;
  }
}

/* ---------- 提交清单 ---------- */
.page-contact .co-ask {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .co-ask__item {
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink-700);
  border-left: 2px solid rgba(255, 106, 43, 0.55);
}

.page-contact .co-ask__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
}

.page-contact .co-ask__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

@media (min-width: 680px) {
  .page-contact .co-ask {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1180px) {
  .page-contact .co-ask {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 联系方式 ---------- */
.page-contact .co-contact {
  display: grid;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  background: var(--glass);
  overflow: hidden;
}

.page-contact .co-contact__primary {
  padding: clamp(22px, 3vw, 36px);
  background: var(--ink-700);
}

.page-contact .co-contact__row {
  padding: 14px 0;
  border-bottom: 1px solid var(--line-soft);
}

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

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

.page-contact .co-contact__label {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-contact .co-contact__value {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 1.8vw, 19px);
  line-height: 1.5;
  color: var(--text);
  word-break: break-word;
  user-select: all;
  font-variant-numeric: tabular-nums;
}

.page-contact .co-contact__value--text {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.7;
}

.page-contact .co-contact__side {
  display: grid;
  gap: 18px;
  align-content: start;
  padding: clamp(22px, 3vw, 36px);
}

.page-contact .co-contact__note,
.page-contact .co-contact__sla,
.page-contact .co-contact__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 44ch;
}

.page-contact .co-contact__sla {
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  color: var(--text);
}

.page-contact .co-contact__hint a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 199, 0.35);
}

.page-contact .co-contact__hint a:hover {
  border-bottom-color: var(--cyan);
}

@media (min-width: 900px) {
  .page-contact .co-contact {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

/* ---------- 区域合作 ---------- */
.page-contact .co-region {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

.page-contact .co-region__p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-dim);
  max-width: 52ch;
}

.page-contact .co-region__p:last-child {
  margin-bottom: 0;
}

.page-contact .co-region__p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 199, 0.35);
}

.page-contact .co-region__p a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .co-region__fig {
  margin: 0;
  border-radius: var(--radius);
  border: 1px solid var(--line-soft);
  overflow: hidden;
  aspect-ratio: 10 / 7;
  background: var(--ink-800);
}

.page-contact .co-region__fig .media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (min-width: 900px) {
  .page-contact .co-region {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: clamp(32px, 5vw, 72px);
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .co-tabs .tabs__tab,
  .page-contact .co-flow__node,
  .page-contact .co-dir__link {
    transition: none;
  }
}
</main>