.page-contact {
  --p-line: rgba(143, 163, 191, 0.24);
  --p-line-hot: rgba(255, 107, 0, 0.6);
  --p-card: rgba(19, 41, 75, 0.78);
  padding-bottom: clamp(52px, 9vw, 104px);
  overflow-x: clip;
}

.page-contact > .wrap {
  padding-top: clamp(16px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  align-items: center;
  padding: clamp(14px, 3vw, 26px) 0 clamp(40px, 7vw, 76px);
  border-bottom: 1px solid var(--p-line);
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.42fr) minmax(240px, 0.58fr);
  }
}

.page-contact .hero-main {
  min-width: 0;
}

.page-contact .hero-flag {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .hero-flag-num {
  color: var(--orange);
  font-weight: 700;
}

.page-contact .hero-flag-line {
  display: inline-block;
  width: 44px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--orange), rgba(255, 107, 0, 0));
}

.page-contact .hero-main .lede {
  max-width: 36em;
  margin-top: 20px;
}

.page-contact .hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-contact .hero-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .hero-facts b {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: 0;
  color: var(--orange-2);
}

.page-contact .hero-visual {
  position: relative;
  max-width: 340px;
  margin-inline: auto;
  border-radius: 42% 42% 46% 46% / 40% 40% 44% 44%;
  overflow: hidden;
  box-shadow: 0 0 0 1px rgba(255, 107, 0, 0.35), 0 0 70px rgba(255, 107, 0, 0.2);
}

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

/* ---------- 区块标题 ---------- */
.page-contact .sec-head {
  display: grid;
  gap: 10px;
  max-width: 44em;
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-contact .sec-head h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
}

/* ---------- 渠道卡片 ---------- */
.page-contact .channels {
  padding: clamp(36px, 6vw, 68px) 0 clamp(20px, 4vw, 44px);
}

.page-contact .channel-board {
  display: grid;
  gap: 18px;
}

@media (min-width: 900px) {
  .page-contact .channel-board {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    align-items: start;
  }
  .page-contact .channel-card:nth-child(2) {
    margin-top: 32px;
  }
  .page-contact .channel-card:nth-child(3) {
    margin-top: 64px;
  }
}

.page-contact .channel-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 28px 22px 24px;
  border: 1px solid var(--p-line);
  border-radius: var(--radius);
  background: linear-gradient(168deg, rgba(19, 41, 75, 0.96), rgba(11, 30, 58, 0.96));
  box-shadow: var(--shadow-card);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.page-contact .channel-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
  background: var(--accent, var(--orange));
}

.page-contact .channel-card--mail { --accent: var(--orange); }
.page-contact .channel-card--phone { --accent: var(--jade); }
.page-contact .channel-card--entry { --accent: var(--gold); }

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--accent, var(--orange));
  box-shadow: 0 22px 50px rgba(3, 10, 22, 0.55), 0 0 0 1px var(--accent, var(--orange));
}

.page-contact .channel-idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent, var(--gold));
}

.page-contact .channel-card h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: #ffffff;
}

.page-contact .channel-scene {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .channel-value {
  margin: 2px 0 0;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: 0.06em;
  color: var(--paper);
  text-shadow: 0 0 18px rgba(18, 184, 134, 0.35);
}

.page-contact .channel-time {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--p-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange-2);
}

.page-contact .channel-card .copy-mail {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 44px;
  padding: 12px 14px;
  border: 1px solid var(--p-line-hot);
  border-radius: var(--radius-sm);
  background: rgba(255, 107, 0, 0.08);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  text-align: left;
  cursor: pointer;
  transition: background 0.22s ease, border-color 0.22s ease;
}

.page-contact .channel-card .copy-mail:hover {
  background: rgba(255, 107, 0, 0.18);
  border-color: var(--orange);
}

.page-contact .channel-card .copy-mail:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.page-contact .copy-mail-text {
  flex: 1 1 auto;
  word-break: break-all;
}

.page-contact .copy-mail-hint {
  flex: 0 0 auto;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--orange-2);
}

.page-contact .channel-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  min-height: 44px;
  padding: 0 2px;
  font-size: 14px;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .channel-link::after {
  content: "→";
  font-family: var(--font-mono);
  transition: transform 0.2s ease;
}

.page-contact .channel-link:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-contact .channel-link:hover::after {
  transform: translateX(3px);
}

/* ---------- 反馈入口 ---------- */
.page-contact .entry {
  padding: clamp(36px, 6vw, 68px) 0 clamp(24px, 4vw, 44px);
}

.page-contact .entry-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-contact .entry-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 34px;
    align-items: start;
  }
}

.page-contact .entry-copy {
  min-width: 0;
}

.page-contact .entry-copy .prose {
  margin: 0 0 22px;
}

.page-contact .entry-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
  border-left: 2px solid rgba(255, 107, 0, 0.5);
  padding-left: 18px;
}

.page-contact .entry-list li {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .entry-list b {
  color: var(--gold);
  font-weight: 700;
  margin-right: 6px;
}

.page-contact .ref-card {
  border: 1px solid var(--p-line);
  border-radius: var(--radius-sm);
  background: var(--p-card);
  padding: 18px 20px;
}

.page-contact .ref-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .ref-code {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: 0.14em;
  color: var(--orange);
  text-shadow: 0 0 22px rgba(255, 107, 0, 0.4);
}

.page-contact .ref-note {
  margin-top: 12px;
  border-top: 1px dashed var(--p-line);
  padding-top: 10px;
}

.page-contact .ref-note summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--jade);
  list-style: none;
}

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

.page-contact .ref-note summary::before {
  content: "▸";
  margin-right: 8px;
  font-family: var(--font-mono);
  transition: transform 0.2s ease;
}

.page-contact .ref-note[open] summary::before {
  transform: rotate(90deg);
}

.page-contact .ref-body p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .mono {
  font-family: var(--font-mono);
  color: var(--orange-2);
  letter-spacing: 0.08em;
}

.page-contact .entry-figure {
  margin: 0;
}

/* ---------- 四步流程 ---------- */
.page-contact .flow {
  padding: clamp(36px, 6vw, 68px) 0 clamp(24px, 4vw, 44px);
}

.page-contact .flow-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .flow-list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 30px;
  bottom: 30px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--orange), var(--gold) 55%, rgba(255, 107, 0, 0.08));
}

.page-contact .flow-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-contact .flow-node {
  width: 16px;
  height: 16px;
  margin: 24px auto 0;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 107, 0, 0.16), 0 0 20px rgba(255, 107, 0, 0.55);
  position: relative;
  z-index: 1;
}

.page-contact .flow-step details {
  border: 1px solid var(--p-line);
  border-radius: var(--radius-sm);
  background: var(--p-card);
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-contact .flow-step details[open] {
  border-color: var(--p-line-hot);
  box-shadow: var(--glow-orange);
}

.page-contact .flow-step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .flow-main {
  display: flex;
  flex-direction: column;
  gap: 3px;
  flex: 1 1 auto;
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-contact .flow-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.02em;
}

.page-contact .flow-toggle {
  flex: 0 0 auto;
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--p-line);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange-2);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-contact .flow-step details[open] .flow-toggle {
  transform: rotate(45deg);
  border-color: var(--orange);
}

.page-contact .flow-body {
  padding: 0 18px 18px;
}

.page-contact .flow-body p {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--p-line);
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 内容共建 ---------- */
.page-contact .coop {
  padding: clamp(36px, 6vw, 68px) 0 clamp(24px, 4vw, 44px);
}

.page-contact .coop-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 900px) {
  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 32px;
    align-items: start;
  }
}

.page-contact .coop-list {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-contact .coop-row {
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 20px;
  border-left: 2px solid rgba(242, 193, 78, 0.55);
  border-bottom: 1px solid var(--p-line);
}

.page-contact .coop-row:last-child {
  border-bottom: none;
}

.page-contact .coop-row dt {
  font-size: 17px;
  font-weight: 800;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-contact .coop-row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .coop-prep h3 {
  margin: 0 0 14px;
  font-size: 19px;
  color: var(--text);
}

.page-contact .coop-prep ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .coop-prep li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .coop-prep li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-contact .coop-note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--p-line);
  font-size: 14px;
  line-height: 1.8;
  color: var(--orange-2);
}

/* ---------- 对接问答 ---------- */
.page-contact .qa {
  padding: clamp(36px, 6vw, 68px) 0 clamp(20px, 4vw, 40px);
}

.page-contact .qa-list {
  display: grid;
  gap: 12px;
}

.page-contact .qa-item {
  border: 1px solid var(--p-line);
  border-radius: var(--radius-sm);
  background: rgba(19, 41, 75, 0.6);
  transition: border-color 0.22s ease;
}

.page-contact .qa-item[open] {
  border-color: rgba(255, 107, 0, 0.5);
}

.page-contact .qa-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

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

.page-contact .qa-item summary::before {
  content: "?";
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--p-line-hot);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

.page-contact .qa-body {
  padding: 0 18px 18px 54px;
}

.page-contact .qa-body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 尾部索引 ---------- */
.page-contact .contact-tail {
  margin-top: clamp(26px, 4vw, 42px);
  padding: 22px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--p-line);
  border-left: 3px solid var(--orange);
  background: var(--p-card);
}

.page-contact .contact-tail p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-contact .contact-tail a {
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 193, 78, 0.4);
  transition: color 0.2s ease, border-color 0.2s ease;
}

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

/* ---------- 窄屏微调 ---------- */
@media (max-width: 600px) {
  .page-contact .hero-visual {
    max-width: 230px;
  }
  .page-contact .channel-card {
    padding: 24px 18px 20px;
  }
  .page-contact .flow-step {
    grid-template-columns: 24px minmax(0, 1fr);
    gap: 10px;
  }
  .page-contact .flow-list::before {
    left: 11px;
  }
  .page-contact .flow-node {
    width: 12px;
    height: 12px;
    margin-top: 26px;
  }
  .page-contact .qa-body {
    padding-left: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .channel-link::after,
  .page-contact .flow-toggle,
  .page-contact .ref-note summary::before {
    transition: none;
  }
}