/* ===== 联系与问题反馈 · 页面专属样式 ===== */

.page-contact {
  --ct-cut: 14px;
  --ct-line: rgba(42, 59, 92, 0.55);
  --ct-deep: #040913;
  padding-bottom: 8px;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-contact .breadcrumb a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .breadcrumb a:hover,
.page-contact .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-contact .breadcrumb span[aria-hidden] {
  color: var(--grid);
}

.page-contact .breadcrumb [aria-current] {
  color: var(--red);
}

/* ---------- 首屏 ---------- */
.page-contact .ct-hero {
  display: grid;
  gap: 36px;
  padding-top: 26px;
  padding-bottom: 60px;
}

.page-contact .ct-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(30px, 6.6vw, 54px);
  font-weight: 900;
  font-style: italic;
  line-height: 1.08;
  letter-spacing: -0.022em;
  color: var(--paper);
  text-shadow: 0 0 1px rgba(0, 229, 255, 0.35);
}

.page-contact .ct-hero h1::before {
  content: "";
  display: block;
  width: 72px;
  height: 6px;
  margin-bottom: 22px;
  background: linear-gradient(90deg, var(--red) 0 58%, var(--cyan) 58% 100%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, 0 100%);
}

.page-contact .ct-hero__lede {
  max-width: 42ch;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-contact .ct-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .ct-hero__side {
  padding: 22px 20px;
  border: 1px solid var(--ct-line);
  border-left: 3px solid var(--red);
  background: linear-gradient(180deg, rgba(7, 23, 51, 0.92), rgba(5, 11, 24, 0.92));
  clip-path: var(--bevel);
}

.page-contact .ct-hero__side-k {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}

.page-contact .ct-beat {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-beat li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--grid);
}

.page-contact .ct-beat__n {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.01em;
}

.page-contact .ct-beat__d {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-dim);
}

/* ---------- 章节骨架 ---------- */
.page-contact .ct-sec {
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-contact .ct-sec--tight {
  padding-top: 44px;
  padding-bottom: 72px;
}

.page-contact .ct-sec--paper {
  background:
    repeating-linear-gradient(0deg, rgba(16, 24, 38, 0.05) 0 1px, transparent 1px 24px),
    var(--paper);
  color: var(--print);
}

.page-contact .ct-sec--deep {
  background:
    radial-gradient(circle at 8% 0%, rgba(122, 92, 255, 0.16), transparent 58%),
    linear-gradient(180deg, var(--ink-deep), var(--ct-deep));
}

/* 章节抬头 */
.page-contact .section-head {
  margin-bottom: 30px;
}

.page-contact .section-head__k {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--red);
}

.page-contact .section-head__t {
  margin: 0 0 12px;
  font-size: clamp(23px, 4.4vw, 37px);
  font-weight: 900;
  font-style: italic;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-contact .section-head__d {
  max-width: 48ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .ct-sec--paper .section-head__t {
  color: var(--print);
}

.page-contact .ct-sec--paper .section-head__k {
  color: #B01935;
}

.page-contact .ct-sec--paper .section-head__d {
  color: #414D66;
}

.page-contact .ct-more__h {
  margin-bottom: 22px;
  color: var(--paper);
}

/* ---------- 01 要素清单 ---------- */
.page-contact .ct-checklist {
  margin: 0;
  padding: 0;
  border: 0;
}

.page-contact .ct-checklist__legend {
  padding: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #55617A;
}

.page-contact .ct-checklist__grid {
  display: grid;
  gap: 12px;
}

.page-contact .ct-item {
  display: grid;
  grid-template-columns: 24px 34px minmax(0, 1fr);
  align-items: start;
  gap: 12px;
  padding: 16px 16px 16px 14px;
  border: 1px solid #C9D3E4;
  border-left: 3px solid var(--orange);
  background: #FFFFFF;
  cursor: pointer;
  clip-path: var(--bevel);
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .ct-item input {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  display: grid;
  place-content: center;
  border: 2px solid var(--orange);
  background: #FFFFFF;
  transition: background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .ct-item input::after {
  content: "";
  width: 10px;
  height: 10px;
  background: var(--paper);
  transform: scale(0);
  transition: transform 0.18s var(--ease);
  clip-path: polygon(14% 47%, 0 62%, 40% 100%, 100% 12%, 84% 0, 38% 74%);
}

.page-contact .ct-item input:checked {
  border-color: var(--print);
  background: var(--print);
}

.page-contact .ct-item input:checked::after {
  transform: scale(1);
}

.page-contact .ct-item:has(input:checked) {
  border-left-color: var(--lime);
  background: #F6FBF0;
  border-color: #B7C4D8;
}

.page-contact .ct-item__no {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--orange);
  padding-top: 2px;
}

.page-contact .ct-item:has(input:checked) .ct-item__no {
  color: #4C7B12;
}

.page-contact .ct-item__body {
  display: grid;
  gap: 5px;
}

.page-contact .ct-item__t {
  font-size: 15px;
  font-weight: 700;
  color: var(--print);
  letter-spacing: 0.01em;
}

.page-contact .ct-item__d {
  font-size: 13.5px;
  line-height: 1.72;
  color: #4B5770;
}

.page-contact .ct-ready {
  margin: 18px 0 0;
  padding: 11px 0 11px 15px;
  border-left: 3px solid #C9D3E4;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #6A7691;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .ct-checklist:not(:has(.ct-item input:not(:checked))) .ct-ready {
  color: var(--print);
  border-left-color: var(--red);
  background: rgba(182, 255, 59, 0.32);
}

/* ---------- 02 标注预览 ---------- */
.page-contact .ct-board {
  padding: 18px;
  border: 1px solid var(--ct-line);
  background: linear-gradient(180deg, rgba(7, 23, 51, 0.88), rgba(5, 11, 24, 0.96));
  clip-path: var(--bevel);
}

.page-contact .ct-board__frame {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--grid);
  background: var(--ink-deep);
  aspect-ratio: 1200 / 750;
}

.page-contact .ct-board__frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.06) brightness(0.9);
}

.page-contact .ct-board__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(0, 229, 255, 0.07) 0 1px, transparent 1px 3px),
    linear-gradient(90deg, rgba(255, 46, 77, 0.16), rgba(0, 229, 255, 0.14));
}

.page-contact .ct-board__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 2;
  margin: 0;
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: rgba(255, 46, 77, 0.92);
  clip-path: polygon(0 0, 100% 0, calc(100% - 11px) 100%, 0 100%);
}

.page-contact .ct-board__bar {
  margin-top: 20px;
}

.page-contact .ct-ruler {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  margin: 0;
  padding: 34px 0 0;
  list-style: none;
}

.page-contact .ct-ruler::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 30px;
  height: 2px;
  background: linear-gradient(90deg, var(--red) 0%, var(--violet) 46%, var(--cyan) 100%);
}

.page-contact .ct-ruler__tick {
  position: relative;
  display: grid;
  justify-items: start;
  gap: 3px;
  max-width: 33%;
  padding-top: 14px;
}

.page-contact .ct-ruler__tick::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .ct-ruler__tick:first-child::before {
  background: var(--red);
}

.page-contact .ct-ruler .timecode {
  font-size: 13px;
}

.page-contact .ct-ruler__lb {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text-dim);
}

.page-contact .ct-tags {
  margin-top: 26px;
}

.page-contact .ct-tags__k {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.page-contact .ct-tags__list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  border: 1px solid var(--ct-line);
  background: rgba(10, 31, 68, 0.55);
  font-size: 13px;
  color: var(--text-soft);
  cursor: pointer;
  clip-path: var(--bevel);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-contact .ct-tag input {
  width: 13px;
  height: 13px;
  margin: 0;
  accent-color: var(--cyan);
}

.page-contact .ct-tag:has(input:checked) {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.1);
}

.page-contact .ct-note {
  margin: 16px 0 0;
  padding-left: 13px;
  border-left: 2px solid var(--violet);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 03 渠道与节奏 ---------- */
.page-contact .ct-ch-grid {
  display: grid;
  gap: 34px;
}

.page-contact .ct-cards {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-card {
  padding: 18px 18px 16px;
  border: 1px solid var(--ct-line);
  border-top: 3px solid var(--red);
  background: rgba(7, 23, 51, 0.74);
  clip-path: var(--bevel);
}

.page-contact .ct-card:nth-child(2) {
  border-top-color: var(--cyan);
}

.page-contact .ct-card:nth-child(3) {
  border-top-color: var(--violet);
}

.page-contact .ct-card__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}

.page-contact .ct-card__v {
  margin: 0 0 9px;
  font-family: var(--font-mono);
  font-size: clamp(15px, 3.5vw, 19px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper);
  overflow-wrap: anywhere;
}

.page-contact .ct-card__n {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .ct-scale {
  display: grid;
  gap: 22px;
  margin: 0;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--grid);
  list-style: none;
}

.page-contact .ct-scale__node {
  position: relative;
}

.page-contact .ct-scale__node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--ink-deep);
  border: 2px solid var(--cyan);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .ct-scale__node:first-child::before {
  border-color: var(--red);
}

.page-contact .ct-scale__node:nth-child(2)::before {
  border-color: var(--red);
  background: var(--cyan);
}

.page-contact .ct-scale__t {
  display: block;
  margin-bottom: 5px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .ct-scale__d {
  display: block;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

.page-contact .ct-figure {
  margin: 32px 0 0;
}

.page-contact .ct-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--ct-line);
  filter: saturate(0.82) contrast(1.06);
}

.page-contact .ct-figure figcaption {
  margin-top: 11px;
  padding-left: 13px;
  border-left: 2px solid var(--violet);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 04 商务合作 ---------- */
.page-contact .ct-coop {
  display: grid;
  gap: 12px;
}

.page-contact .ct-coop__item {
  border: 1px solid var(--ct-line);
  background: rgba(5, 11, 24, 0.52);
  clip-path: var(--bevel);
  transition: border-color 0.2s var(--ease);
}

.page-contact .ct-coop__item[open] {
  border-color: var(--violet);
}

.page-contact .ct-coop__sum {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 20px;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .ct-coop__no {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--red);
}

.page-contact .ct-coop__t {
  font-size: 16px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-contact .ct-coop__cue {
  position: relative;
  justify-self: end;
  width: 14px;
  height: 14px;
}

.page-contact .ct-coop__cue::before,
.page-contact .ct-coop__cue::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--cyan);
}

.page-contact .ct-coop__cue::before {
  width: 14px;
  height: 2px;
}

.page-contact .ct-coop__cue::after {
  width: 2px;
  height: 14px;
  transition: transform 0.2s var(--ease);
}

.page-contact .ct-coop__item[open] .ct-coop__cue::after {
  transform: scaleY(0);
}

.page-contact .ct-coop__body {
  padding: 0 18px 20px;
}

.page-contact .ct-coop__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-contact .ct-coop__need {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .ct-coop__need li {
  position: relative;
  padding-left: 18px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text-dim);
}

.page-contact .ct-coop__need li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--orange);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-contact .ct-tip {
  margin: 22px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--lime);
  background: rgba(182, 255, 59, 0.07);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

/* ---------- 05 纠错与授权 ---------- */
.page-contact .ct-corr {
  display: grid;
  gap: 1px;
  border: 1px solid var(--ct-line);
  background: var(--ct-line);
}

.page-contact .ct-corr__b {
  padding: 22px 20px;
  background: var(--ink-deep);
}

.page-contact .ct-corr__b h3 {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 900;
  font-style: italic;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .ct-corr__b p {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-contact .ct-corr__a {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.4);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .ct-corr__a:hover,
.page-contact .ct-corr__a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 收尾双卡 ---------- */
.page-contact .ct-more {
  display: grid;
  gap: 14px;
}

.page-contact .ct-more__card {
  display: grid;
  gap: 9px;
  padding: 22px 20px;
  border: 1px solid var(--ct-line);
  background: rgba(7, 23, 51, 0.62);
  text-decoration: none;
  clip-path: var(--bevel);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-contact .ct-more__card:hover,
.page-contact .ct-more__card:focus-visible {
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.page-contact .ct-more__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--red);
}

.page-contact .ct-more__t {
  font-size: 18px;
  font-weight: 900;
  font-style: italic;
  color: var(--paper);
}

.page-contact .ct-more__d {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-contact .ct-hero {
    padding-top: 40px;
    padding-bottom: 76px;
  }

  .page-contact .ct-sec {
    padding-top: 76px;
    padding-bottom: 76px;
  }

  .page-contact .ct-coop__body {
    padding-left: 68px;
  }

  .page-contact .ct-more {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 992px) {
  .page-contact .ct-hero {
    grid-template-columns: minmax(0, 1.38fr) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
    padding-top: 64px;
    padding-bottom: 96px;
  }

  .page-contact .ct-sec {
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .page-contact .ct-ch-grid {
    grid-template-columns: minmax(0, 42fr) minmax(0, 58fr);
    gap: 46px;
    align-items: start;
  }

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

  .page-contact .ct-corr__b {
    padding: 26px 24px;
  }

  .page-contact .ct-checklist__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-contact .ct-ready {
    margin-top: 22px;
  }

  .page-contact .ct-scale {
    padding-left: 28px;
  }

  .page-contact .ct-scale__node::before {
    left: -35px;
  }
}

@media (min-width: 1200px) {
  .page-contact .ct-checklist__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-item,
  .page-contact .ct-item input,
  .page-contact .ct-item input::after,
  .page-contact .ct-tag,
  .page-contact .ct-coop__item,
  .page-contact .ct-coop__cue::after,
  .page-contact .ct-more__card,
  .page-contact .ct-ready,
  .page-contact .breadcrumb a,
  .page-contact .ct-corr__a {
    transition-duration: 0.01ms;
  }

  .page-contact .ct-more__card:hover,
  .page-contact .ct-more__card:focus-visible {
    transform: none;
  }
}