/* ===== 联系我们页 ===== */
.page-contact {
  padding-block: clamp(24px, 4vw, 56px) clamp(60px, 9vw, 120px);
  background:
    radial-gradient(900px 480px at 88% -6%, rgba(47, 230, 208, 0.08), transparent 62%),
    radial-gradient(720px 420px at 2% 38%, rgba(242, 193, 78, 0.05), transparent 60%),
    var(--ink-900);
}

.page-contact .crumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

@media (min-width: 960px) {
  .page-contact .contact-hero-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: start;
    gap: 22px;
  }
}

.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--r-xl);
  border: 1px solid var(--line-600);
  background: var(--ink-850);
  box-shadow: var(--shadow-card);
}

.page-contact .contact-card-tex {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-contact .contact-card-body {
  position: relative;
  z-index: 1;
  padding: clamp(24px, 4.4vw, 46px);
}

.page-contact .contact-card-body h1 {
  margin: 8px 0 0;
  font-size: clamp(2rem, 5.6vw, 3.1rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
}

.page-contact .contact-lede {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .contact-lines {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .contact-line {
  display: grid;
  gap: 6px;
  padding: 15px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-600);
  background: rgba(10, 21, 38, 0.62);
  transition: border-color 0.18s var(--ease);
}

.page-contact .contact-line:hover {
  border-color: rgba(47, 230, 208, 0.5);
}

.page-contact .contact-line-label {
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-contact .contact-line-value {
  font-size: clamp(1rem, 2.1vw, 1.16rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .contact-line-note {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--muted);
}

/* 右侧分类入口 */
.page-contact .contact-rail {
  border-radius: var(--r-xl);
  border: 1px solid var(--line-600);
  background: linear-gradient(198deg, var(--ink-700), var(--ink-850));
  padding: clamp(20px, 3.4vw, 30px);
}

.page-contact .rail-title {
  margin: 0 0 8px;
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .rail-hint {
  margin: 0 0 18px;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-contact .rail-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 15px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-600);
  background: rgba(10, 21, 38, 0.55);
  color: var(--text);
  font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), background-color 0.18s var(--ease), transform 0.18s var(--ease);
}

.page-contact .rail-item:hover {
  border-color: var(--cyan);
  background: rgba(47, 230, 208, 0.08);
  transform: translateX(3px);
}

.page-contact .rail-item:focus-visible {
  outline: none;
  border-color: var(--cyan);
  box-shadow: var(--glow);
}

.page-contact .rail-num {
  flex: none;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 通用章节 ---------- */
.page-contact .contact-sec {
  margin-top: clamp(52px, 8vw, 104px);
}

.page-contact .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-600);
}

.page-contact .section-num {
  font-size: clamp(1.5rem, 3.2vw, 2.3rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-contact .section-title {
  margin: 0;
  font-size: clamp(1.32rem, 2.6vw, 1.82rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-contact .section-sub {
  margin: 8px 0 0;
  max-width: 66ch;
  font-size: 0.94rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 01 咨询分类 ---------- */
.page-contact .ask-list {
  display: grid;
  gap: 12px;
}

.page-contact .ask-item {
  overflow: hidden;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-600);
  background: var(--ink-800);
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-contact .ask-item[open] {
  border-color: rgba(47, 230, 208, 0.5);
  box-shadow: 0 0 0 1px rgba(47, 230, 208, 0.12), 0 26px 54px -44px rgba(0, 0, 0, 0.95);
}

.page-contact .ask-summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  transition: color 0.18s var(--ease);
}

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

.page-contact .ask-summary::marker {
  content: "";
}

.page-contact .ask-summary:hover {
  color: var(--cyan);
}

.page-contact .ask-num {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-contact .ask-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-contact .ask-mark::before,
.page-contact .ask-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: calc(50% - 0.75px);
  height: 1.5px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-contact .ask-mark::after {
  transform: rotate(90deg);
  transition: transform 0.22s var(--ease);
}

.page-contact .ask-item[open] .ask-mark::after {
  transform: rotate(0deg);
}

.page-contact .ask-body {
  padding: 16px 18px 22px;
  border-top: 1px solid var(--line-600);
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.8;
}

.page-contact .ask-body p {
  margin: 0 0 12px;
}

.page-contact .ask-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-contact .ask-points li {
  position: relative;
  padding-left: 18px;
  font-size: 0.92rem;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .ask-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
}

/* ---------- 02 投稿与合作 ---------- */
.page-contact .coop-flow {
  list-style: none;
  margin: 0 0 clamp(22px, 3.4vw, 34px);
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .coop-node {
  position: relative;
  padding: 18px 16px 20px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-600);
  background: var(--ink-800);
}

.page-contact .coop-node-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 30px;
  padding-inline: 9px;
  border-radius: var(--pill);
  background: rgba(242, 193, 78, 0.14);
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

.page-contact .coop-node-title {
  margin: 12px 0 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .coop-node-text {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-contact .coop-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-contact .coop-node::after {
    content: "";
    position: absolute;
    top: 33px;
    right: -18px;
    width: 18px;
    height: 1px;
    background: linear-gradient(to right, rgba(242, 193, 78, 0.55), rgba(242, 193, 78, 0.12));
  }

  .page-contact .coop-node:last-child::after {
    display: none;
  }
}

.page-contact .coop-figure {
  margin: 0 0 clamp(22px, 3.4vw, 34px);
}

.page-contact .coop-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-600);
  background: var(--ink-800);
}

.page-contact .coop-notes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 760px) {
  .page-contact .coop-notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-contact .coop-note {
  padding: 20px 18px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-600);
  border-left: 2px solid rgba(47, 230, 208, 0.55);
  background: var(--ink-850);
}

.page-contact .coop-note-title {
  margin: 0 0 8px;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text);
}

.page-contact .coop-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 03 回复节奏 ---------- */
.page-contact .pace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

@media (min-width: 700px) {
  .page-contact .pace-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

.page-contact .pace-card {
  display: grid;
  gap: 9px;
  padding: 20px 18px 22px;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-600);
  border-top: 2px solid var(--alert);
  background: linear-gradient(172deg, var(--ink-700), var(--ink-850));
}

.page-contact .pace-value {
  font-size: clamp(1.1rem, 2.2vw, 1.42rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .pace-label {
  font-size: 0.88rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .pace-note {
  margin: 20px 0 0;
  max-width: 72ch;
  padding: 16px 18px;
  border-radius: var(--r-md);
  border: 1px solid var(--line-600);
  background: rgba(16, 31, 53, 0.72);
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .pace-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 230, 208, 0.35);
}

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

/* ---------- 04 通信地址 ---------- */
.page-contact .addr-block {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: clamp(22px, 3.6vw, 34px);
  border-radius: var(--r-xl);
  border: 1px solid var(--line-600);
  background: var(--ink-800);
  transition: border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-contact .addr-block::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(47, 230, 208, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(47, 230, 208, 0.09) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: 0.75;
  pointer-events: none;
}

.page-contact .addr-block:hover,
.page-contact .addr-block:focus-within {
  border-color: rgba(47, 230, 208, 0.55);
  box-shadow: 0 0 0 1px rgba(47, 230, 208, 0.14), 0 30px 60px -50px rgba(0, 0, 0, 0.95);
}

@media (min-width: 800px) {
  .page-contact .addr-block {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 28px;
  }
}

.page-contact .addr-main {
  position: relative;
  z-index: 1;
}

.page-contact .addr-main .section-num {
  display: block;
  margin-bottom: 10px;
}

.page-contact .addr-line {
  margin: 12px 0 10px;
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-contact .addr-note {
  margin: 0;
  max-width: 62ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--muted);
}

.page-contact .addr-tags {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .contact-links {
  margin: 26px 0 0;
  font-size: 0.92rem;
  line-height: 1.9;
  color: var(--muted);
}

.page-contact .contact-links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 230, 208, 0.35);
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .rail-item,
  .page-contact .ask-mark::after,
  .page-contact .addr-block,
  .page-contact .ask-item,
  .page-contact .contact-line {
    transition: none;
  }
}