.page-contact {
  --ct-line: var(--grid-soft);
  --ct-gap: clamp(28px, 5vw, 56px);
  color: var(--paper);
}

.page-contact .page-wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(20px, 4vw, 44px) var(--pad) clamp(64px, 9vw, 112px);
}

.page-contact .ct-h2 {
  font-family: var(--display);
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.18;
  letter-spacing: -.015em;
  font-weight: 800;
  color: var(--paper);
  margin: 0 0 12px;
}

.page-contact .ct-h3 {
  font-family: var(--display);
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 10px;
  color: var(--paper);
}

.page-contact p {
  margin: 0 0 14px;
  color: var(--fog);
  line-height: 1.85;
}

.page-contact a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-contact a:hover {
  text-decoration-thickness: 2px;
}

/* ---------- 首屏 ---------- */
.page-contact .ct-head {
  position: relative;
  padding: 10px 0 clamp(28px, 5vw, 48px);
  border-bottom: 1px solid var(--ct-line);
  background-image:
    linear-gradient(to right, rgba(51, 66, 62, .16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(51, 66, 62, .12) 1px, transparent 1px);
  background-size: 72px 72px;
  background-position: top left;
}

.page-contact .crumbs {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--fog-dim);
  margin-bottom: 22px;
}

.page-contact .crumbs a { color: var(--fog); text-decoration: none; }
.page-contact .crumbs a:hover { color: var(--lime); }
.page-contact .crumbs__sep { margin: 0 8px; color: var(--grid); }

.page-contact .ct-head__kicker {
  margin: 0 0 14px;
  color: var(--lime);
}

.page-contact .ct-head__title {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 56px);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 0 0 22px;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  max-width: 15em;
}

.page-contact .ct-head__body p {
  max-width: 62ch;
  font-size: 16.5px;
}

.page-contact .ct-head__pills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 20px 0 0;
}

/* ---------- 分段切换 ---------- */
.page-contact .ct-route {
  padding-top: var(--ct-gap);
}

.page-contact .ct-route__head {
  margin-bottom: 24px;
}

.page-contact .ct-route__lede {
  max-width: 58ch;
  margin: 0;
}

.page-contact .ct-tabs__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 0;
}

.page-contact .ct-tab {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "idx name"
    ".   hint";
  gap: 4px 12px;
  align-items: baseline;
  width: 100%;
  padding: 16px 18px 16px 22px;
  text-align: left;
  background: var(--ink-2);
  border: 1px solid var(--ct-line);
  border-radius: 0;
  color: var(--paper);
  font-family: var(--sans);
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-contact .ct-tab::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background .18s var(--ease);
}

.page-contact .ct-tab:hover {
  border-color: var(--lime);
  background: var(--board);
}

.page-contact .ct-tab[aria-selected="true"] {
  background: var(--board);
  border-color: var(--grid);
}

.page-contact .ct-tab[aria-selected="true"]::before {
  background: var(--lime);
}

.page-contact .ct-tab:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .ct-tab__idx {
  grid-area: idx;
  font-size: 12px;
  color: var(--fog-dim);
  letter-spacing: .08em;
}

.page-contact .ct-tab[aria-selected="true"] .ct-tab__idx {
  color: var(--lime);
}

.page-contact .ct-tab__name {
  grid-area: name;
  font-family: var(--display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.01em;
}

.page-contact .ct-tab__hint {
  grid-area: hint;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--fog-dim);
}

.page-contact .ct-panel {
  margin-top: 14px;
  padding: clamp(20px, 3.6vw, 34px);
  background: var(--board);
  border: 1px solid var(--grid);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-contact .ct-panel:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.page-contact .ct-panel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .ct-panel__main p {
  max-width: 62ch;
}

.page-contact .ct-panel__more {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--fog-dim);
}

/* 材料清单 */
.page-contact .ct-need {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-need__item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-need__num {
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
  line-height: 1.5;
}

.page-contact .ct-need__item strong {
  display: block;
  color: var(--paper);
  font-size: 16px;
  margin-bottom: 4px;
}

.page-contact .ct-need__item p {
  margin: 0;
  font-size: 14.5px;
}

.page-contact .ct-bullets {
  list-style: none;
  padding: 0;
  margin: 16px 0 0;
}

.page-contact .ct-bullets li {
  position: relative;
  padding: 10px 0 10px 20px;
  border-bottom: 1px solid var(--ct-line);
  color: var(--fog);
  font-size: 15px;
  line-height: 1.75;
}

.page-contact .ct-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
}

/* 侧栏批注 */
.page-contact .ct-sidebar {
  padding: 18px;
  border: 1px dashed var(--amber);
  background: rgba(233, 166, 60, .045);
}

.page-contact .ct-sidebar .label {
  color: var(--amber);
  display: block;
  margin-bottom: 12px;
}

.page-contact .ct-sidebar__sample {
  font-size: 13px;
  color: var(--paper);
  border-bottom: 1px solid var(--ct-line);
  padding-bottom: 8px;
  margin: 0 0 8px;
  word-break: break-all;
}

.page-contact .ct-sidebar__sample:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-contact .ct-sidebar__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper);
}

/* 图片 */
.page-contact .ct-fig {
  margin: 0;
}

.page-contact .ct-fig .figure__img img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--grid);
  object-fit: cover;
  filter: saturate(.86);
}

.page-contact .ct-fig .figure__cap {
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--fog-dim);
}

/* ---------- 回复节奏 ---------- */
.page-contact .ct-reply {
  margin-top: var(--ct-gap);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-reply__head {
  margin-bottom: 26px;
}

.page-contact .ct-reply__lede {
  max-width: 56ch;
  margin: 0;
}

.page-contact .ct-track {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-left: 1px solid var(--grid);
}

.page-contact .ct-track__node {
  position: relative;
  padding: 0 0 28px 24px;
}

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

.page-contact .ct-track__dot {
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--lime);
  box-sizing: border-box;
}

.page-contact .ct-track__node:last-child .ct-track__dot {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .ct-track__when {
  display: block;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-contact .ct-track__title {
  font-family: var(--display);
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-contact .ct-track__node p {
  margin: 0;
  font-size: 14.5px;
  max-width: 40ch;
}

/* ---------- 合作 ---------- */
.page-contact .ct-coop {
  margin-top: var(--ct-gap);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--ct-line);
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .ct-coop__body p {
  max-width: 60ch;
}

.page-contact .ct-coop__list {
  margin: 20px 0 0;
  border-top: 1px solid var(--ct-line);
}

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

.page-contact .ct-coop__row dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lime);
  margin-bottom: 6px;
}

.page-contact .ct-coop__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--fog);
}

.page-contact .ct-coop__foot {
  margin: 20px 0 0;
  padding: 14px 16px;
  background: var(--ink-2);
  border-left: 3px solid var(--amber);
  font-size: 14px;
  color: var(--paper);
}

/* ---------- 直接对接 ---------- */
.page-contact .ct-direct {
  margin-top: var(--ct-gap);
  padding-top: var(--ct-gap);
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-direct__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  margin-top: 24px;
}

.page-contact .ct-prep {
  background: var(--board);
  border: 1px solid var(--grid);
  padding: clamp(18px, 3vw, 28px);
  position: relative;
}

.page-contact .ct-prep::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 46px;
  height: 3px;
  background: var(--lime);
}

.page-contact .ct-prep__label {
  display: block;
  color: var(--lime);
  margin-bottom: 14px;
}

.page-contact .ct-prep__list {
  margin: 0;
}

.page-contact .ct-prep__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--ct-line);
}

.page-contact .ct-prep__row dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--paper);
  font-weight: 600;
}

.page-contact .ct-prep__row dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--fog);
}

.page-contact .ct-prep__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  color: var(--amber);
  line-height: 1.75;
}

.page-contact .ct-lines {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--grid);
}

.page-contact .ct-line {
  padding: 16px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-line__k {
  display: block;
  color: var(--fog-dim);
  margin-bottom: 6px;
}

.page-contact .ct-line__v {
  display: block;
  font-size: 15px;
  color: var(--paper);
  line-height: 1.6;
  word-break: break-all;
}

.page-contact .ct-line__hint {
  display: block;
  margin-top: 5px;
  font-size: 12.5px;
  color: var(--fog-dim);
}

.page-contact .ct-lines__links {
  list-style: none;
  padding: 16px 0 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  font-size: 13px;
}

.page-contact .ct-lines__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--grid);
  padding-bottom: 2px;
}

.page-contact .ct-lines__links a:hover {
  border-color: var(--cyan);
}

/* ---------- 平板 ---------- */
@media (min-width: 768px) {
  .page-contact .ct-tabs__list {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .page-contact .ct-tab {
    border-right-width: 0;
  }

  .page-contact .ct-tab:last-child {
    border-right-width: 1px;
  }

  .page-contact .ct-tab[aria-selected="true"] {
    border-right-width: 1px;
  }

  .page-contact .ct-panel {
    margin-top: 0;
  }

  .page-contact .ct-panel__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .95fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .ct-panel__grid .ct-sidebar {
    margin-top: 6px;
  }

  .page-contact .ct-track {
    grid-template-columns: repeat(3, 1fr);
    border-left: 0;
    border-top: 1px solid var(--grid);
  }

  .page-contact .ct-track__node {
    padding: 26px 20px 0 0;
  }

  .page-contact .ct-track__node:last-child {
    padding-bottom: 0;
    padding-right: 0;
  }

  .page-contact .ct-track__dot {
    left: 0;
    top: -5px;
  }

  .page-contact .ct-coop {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    gap: 40px;
    align-items: start;
  }

  .page-contact .ct-direct__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 32px;
  }

  .page-contact .ct-prep__row {
    grid-template-columns: 140px 1fr;
    gap: 14px;
    align-items: baseline;
  }

  .page-contact .ct-line {
    text-align: right;
  }

  .page-contact .ct-lines__links {
    justify-content: flex-end;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-contact .ct-head {
    padding-bottom: 56px;
  }

  .page-contact .ct-panel__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
  }

  .page-contact .ct-coop {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    gap: 56px;
  }

  .page-contact .ct-track__node {
    padding-right: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-tab,
  .page-contact .ct-tab::before {
    transition: none;
  }
}