/* ===== 合作与联系 / page-contact ===== */
.page-contact {
  --contact-gap: clamp(48px, 8vw, 96px);
  --contact-deep: rgba(20, 49, 76, 0.92);
}

/* --- 首屏元信息 --- */
.page-contact .contact-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: var(--line);
  font-size: 14px;
  color: var(--navy);
}

.page-contact .contact-meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-contact .contact-meta .mono {
  font-weight: 700;
  color: var(--flag-red);
}

.page-contact .page-head {
  padding-bottom: clamp(30px, 5vw, 52px);
}

/* --- 顶部通栏图与半透明信息面板 --- */
.page-contact .contact-hero {
  position: relative;
  margin: 0 0 var(--contact-gap);
  border: var(--line);
  background: var(--navy);
  overflow: hidden;
}

.page-contact .contact-hero img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-hero-caption {
  padding: 10px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--gold);
  background: var(--navy);
  border-bottom: 1px solid rgba(244, 239, 230, 0.16);
}

.page-contact .contact-hero-card {
  padding: 22px 20px;
  background: var(--contact-deep);
  border-top: 3px solid var(--gold);
  color: var(--paper);
}

.page-contact .contact-hero-card-title {
  margin: 0 0 8px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-contact .contact-hero-card p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(244, 239, 230, 0.86);
}

/* --- 章节通用 --- */
.page-contact .contact-section {
  margin-bottom: var(--contact-gap);
}

.page-contact .section-head {
  max-width: 64ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-size: clamp(25px, 3.6vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: var(--navy);
}

.page-contact .section-lede {
  margin: 14px 0 0;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
}

/* --- 事由选择器 --- */
.page-contact .contact-tablist {
  display: grid;
  grid-template-columns: 1fr;
  border: var(--line);
  background: var(--paper);
}

.page-contact .contact-tab {
  position: relative;
  appearance: none;
  display: block;
  width: 100%;
  padding: 16px 18px;
  border: 0;
  border-bottom: var(--line);
  background: transparent;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  color: var(--navy);
  cursor: pointer;
}

.page-contact .contact-tab:last-child {
  border-bottom: 0;
}

.page-contact .contact-tab .tab-index {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .contact-tab[aria-selected="true"] {
  color: var(--jade);
  background: rgba(31, 138, 122, 0.07);
  box-shadow: inset 0 0 0 2px var(--flag-red);
}

.page-contact .contact-tab[aria-selected="true"] .tab-index {
  color: var(--flag-red);
}

.page-contact .contact-tab:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -4px;
}

.page-contact .contact-panel {
  padding: 22px 18px 24px;
  border: var(--line);
  border-top: 0;
  background: var(--paper);
}

.page-contact .panel-lead {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .panel-hint {
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 3px solid var(--jade);
  background: rgba(31, 138, 122, 0.07);
  font-size: 14px;
  line-height: 1.75;
  color: var(--navy);
}

/* --- 自查清单 --- */
.page-contact .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--weave);
}

.page-contact .check-item:last-child {
  border-bottom: 0;
}

.page-contact .check-input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  margin: 4px 0 0;
  padding: 0;
  border: 1px solid var(--mist);
  border-radius: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.page-contact .check-input:checked {
  border-color: var(--jade);
  background: var(--jade);
}

.page-contact .check-input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 5px;
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--paper);
  border-bottom: 2px solid var(--paper);
  transform: rotate(-45deg);
}

.page-contact .check-input:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-contact .check-label {
  display: block;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  cursor: pointer;
}

.page-contact .check-title {
  display: block;
  font-weight: 700;
  color: var(--navy);
}

.page-contact .check-note {
  display: block;
  margin-top: 3px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

/* --- 联系入口三格 --- */
.page-contact .channel-grid {
  display: grid;
  grid-template-columns: 1fr;
  border: var(--line);
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px;
  border-bottom: var(--line);
  background: var(--paper);
}

.page-contact .channel-card:last-child {
  border-bottom: 0;
}

.page-contact .channel-card--navy {
  background: var(--navy);
}

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

.page-contact .channel-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--navy);
  word-break: break-word;
}

.page-contact .channel-use {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .channel-card--navy .channel-label {
  color: var(--gold);
}

.page-contact .channel-card--navy .channel-value {
  color: var(--gold);
}

.page-contact .channel-card--navy .channel-use {
  color: rgba(244, 239, 230, 0.84);
}

/* --- 内容协作 --- */
.page-contact .collab-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-contact .collab-body h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--navy);
}

.page-contact .collab-body > p {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .collab-list {
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .collab-list li {
  position: relative;
  padding: 14px 0 14px 22px;
  border-top: var(--line);
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
}

.page-contact .collab-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 23px;
  width: 10px;
  height: 1px;
  background: var(--flag-red);
}

.page-contact .contact-collab-figure {
  margin: 0;
  border: var(--line);
  background: var(--navy);
}

.page-contact .contact-collab-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-contact .contact-collab-figure figcaption {
  padding: 12px 16px;
  border-top: 1px solid rgba(244, 239, 230, 0.16);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gold);
  background: var(--navy);
}

/* --- 读者反馈 --- */
.page-contact .feedback-inner {
  position: relative;
  padding: clamp(28px, 5vw, 56px) clamp(20px, 4vw, 48px);
  background: var(--navy);
  color: var(--paper);
}

.page-contact .feedback-inner::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--flag-red) 0%, var(--orange) 26%, var(--gold) 52%, var(--jade) 76%, var(--navy-soft) 100%);
}

.page-contact .feedback-inner .eyebrow {
  color: var(--gold);
}

.page-contact .feedback-inner h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.4vw, 34px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-contact .feedback-inner p {
  max-width: 66ch;
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 239, 230, 0.86);
}

.page-contact .feedback-inner .btn {
  display: inline-block;
  margin-top: 26px;
}

/* --- 位置提示 --- */
.page-contact .contact-locate {
  margin-bottom: clamp(56px, 9vw, 112px);
}

.page-contact .locate-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: clamp(22px, 4vw, 40px);
  border: var(--line);
  border-left: 4px solid var(--flag-red);
  background: var(--paper);
}

.page-contact .locate-copy h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.page-contact .locate-copy p {
  margin: 14px 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink);
}

.page-contact .locate-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .locate-links .chip {
  display: inline-block;
  padding: 6px 12px;
  border: 1px solid var(--weave);
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--navy);
  text-decoration: none;
}

.page-contact .locate-links .chip:hover,
.page-contact .locate-links .chip:focus-visible {
  border-color: var(--flag-red);
  color: var(--flag-red);
  outline: none;
}

.page-contact .locate-grid {
  position: relative;
  min-height: 150px;
  border: var(--line);
  background-color: rgba(217, 210, 197, 0.28);
  background-image: repeating-linear-gradient(0deg, var(--weave) 0 1px, transparent 1px 26px), repeating-linear-gradient(90deg, var(--weave) 0 1px, transparent 1px 26px);
}

.page-contact .locate-grid::after {
  content: "";
  position: absolute;
  left: 52px;
  top: 52px;
  width: 9px;
  height: 9px;
  background: var(--flag-red);
  box-shadow: 0 0 0 5px rgba(168, 52, 42, 0.16);
}

.page-contact .locate-grid::before {
  content: "";
  position: absolute;
  right: 68px;
  bottom: 60px;
  width: 7px;
  height: 7px;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(232, 179, 60, 0.18);
}

/* --- 响应式 --- */
@media (min-width: 720px) {
  .page-contact .contact-tablist {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .contact-tab {
    border-bottom: 0;
    border-right: var(--line);
    padding: 18px 20px;
    font-size: 17px;
  }

  .page-contact .contact-tab:last-child {
    border-right: 0;
  }

  .page-contact .contact-panel {
    padding: 28px 26px 30px;
  }
}

@media (min-width: 760px) {
  .page-contact .channel-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-contact .channel-card {
    border-bottom: 0;
    border-right: var(--line);
  }

  .page-contact .channel-card:last-child {
    border-right: 0;
  }

  .page-contact .channel-value {
    font-size: 15px;
    word-break: normal;
    overflow-wrap: anywhere;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero-card {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 46%;
    max-width: 460px;
    border-top: 0;
    border-left: 3px solid var(--gold);
    padding: 26px 28px;
  }
}

@media (min-width: 880px) {
  .page-contact .locate-panel {
    grid-template-columns: 7fr 5fr;
    gap: 44px;
    align-items: center;
  }

  .page-contact .locate-grid {
    min-height: 190px;
  }
}

@media (min-width: 960px) {
  .page-contact .collab-grid {
    grid-template-columns: 7fr 5fr;
    gap: 52px;
    align-items: start;
  }

  .page-contact .collab-list li {
    font-size: 16px;
  }
}
<<<END>>>