.page-contact {
  --pc-line: rgba(126, 147, 139, 0.26);
  --pc-line-soft: rgba(214, 199, 173, 0.16);
  --pc-gap: clamp(18px, 3vw, 34px);
  display: block;
  padding-bottom: clamp(52px, 7vw, 96px);
  background:
    radial-gradient(90% 60% at 92% -8%, rgba(11, 27, 43, 0.9), transparent 62%),
    radial-gradient(70% 50% at -6% 34%, rgba(16, 38, 33, 0.85), transparent 70%),
    var(--ink-800);
  color: var(--paper);
  font-family: var(--font-body);
}

.page-contact .breadcrumbs {
  padding-top: clamp(14px, 2.2vw, 24px);
  font-size: 13px;
}

/* ---------- 首屏声明 ---------- */
.page-contact .contact-hero {
  padding: clamp(26px, 4.4vw, 52px) 0 clamp(28px, 4vw, 46px);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .contact-hero .eyebrow {
  color: var(--lime);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin: 0;
}

.page-contact .page-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7vw, 76px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  margin: 14px 0 20px;
  text-wrap: balance;
}

.page-contact .page-title em {
  display: block;
  font-style: normal;
  color: var(--lime);
}

.page-contact .page-lede {
  max-width: 64ch;
  margin: 0;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--sand);
}

.page-contact .hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

/* ---------- 工作台分栏 ---------- */
.page-contact .contact-desk {
  display: grid;
  gap: clamp(26px, 3.6vw, 44px);
  margin-top: clamp(30px, 4.6vw, 58px);
  align-items: start;
}

@media (min-width: 980px) {
  .page-contact .contact-desk {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-contact .desk-aside {
    position: sticky;
    top: 96px;
  }
}

.page-contact .section-head {
  margin: 0 0 22px;
}

.page-contact .section-index {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.26em;
  color: var(--lime);
}

.page-contact .section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.3vw, 34px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 8px 0 10px;
  color: var(--paper);
}

.page-contact .section-note {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--smoke);
}

/* ---------- 反馈类型折叠列表 ---------- */
.page-contact .type-list {
  border-top: 1px solid var(--pc-line);
}

.page-contact .type-item {
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .type-item > summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 18px 4px;
  list-style: none;
  cursor: pointer;
  transition: background 200ms var(--ease), padding 200ms var(--ease);
}

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

.page-contact .type-item > summary:hover {
  background: rgba(93, 224, 208, 0.06);
}

.page-contact .type-item > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .type-item > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}

.page-contact .type-item[open] > summary::after {
  content: "–";
  color: var(--lime);
  transform: rotate(180deg);
}

.page-contact .type-item[open] > summary {
  background: rgba(200, 255, 61, 0.05);
}

.page-contact .type-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--lime);
  flex: none;
}

.page-contact .type-name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(16px, 2.2vw, 20px);
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-contact .type-hint {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--smoke);
  text-align: right;
}

@media (max-width: 559px) {
  .page-contact .type-hint {
    display: none;
  }
}

.page-contact .type-body {
  display: grid;
  gap: 18px;
  padding: 6px 4px 24px;
  animation: pc-fade-in 260ms var(--ease) both;
}

@media (min-width: 680px) {
  .page-contact .type-body {
    grid-template-columns: 1fr 1fr;
    gap: 26px;
    padding-bottom: 28px;
  }
}

.page-contact .type-block h3 {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--sand);
  text-transform: uppercase;
}

.page-contact .type-block p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(242, 247, 244, 0.84);
}

.page-contact .type-block ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .type-block li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 7px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(242, 247, 244, 0.78);
}

.page-contact .type-block li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 玻璃联系卡 ---------- */
.page-contact .contact-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius);
  background: var(--ink-700);
  isolation: isolate;
}

.page-contact .contact-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.34;
}

.page-contact .contact-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(158deg, rgba(7, 26, 22, 0.9) 0%, rgba(11, 27, 43, 0.94) 58%, rgba(5, 13, 20, 0.97) 100%);
}

.page-contact .contact-card-inner {
  position: relative;
  z-index: 2;
  padding: clamp(20px, 3vw, 30px);
  backdrop-filter: blur(2px);
}

.page-contact .contact-card-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -0.02em;
}

.page-contact .contact-card-sub {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--sand);
}

.page-contact .channel-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
}

.page-contact .channel-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 12px;
  padding: 13px 0;
  border-top: 1px dashed var(--pc-line-soft);
}

.page-contact .channel-label {
  grid-column: 1 / -1;
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--smoke);
  text-transform: uppercase;
}

.page-contact .channel-value {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-contact .copy-btn {
  align-self: center;
  grid-row: 2;
  grid-column: 2;
}

.page-contact .contact-status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
  padding: 10px 12px;
  border: 1px solid rgba(200, 255, 61, 0.34);
  border-radius: var(--radius);
  background: rgba(200, 255, 61, 0.08);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.page-contact .status-light {
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--lime);
  animation: pc-pulse 2.4s ease-in-out infinite;
}

.page-contact .card-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(93, 224, 208, 0.42);
  padding-bottom: 2px;
}

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

/* ---------- 处理流程 ---------- */
.page-contact .section {
  margin-top: clamp(44px, 6vw, 84px);
}

.page-contact .flow-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .flow-step {
  background: var(--ink-600);
  padding: 22px clamp(16px, 2.4vw, 26px) 26px;
  transition: background 200ms var(--ease);
}

.page-contact .flow-step:hover {
  background: #122c26;
}

@media (min-width: 820px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-contact .flow-step-num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--warm);
  margin-bottom: 12px;
}

.page-contact .flow-step h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 2.1vw, 20px);
  letter-spacing: -0.01em;
}

.page-contact .flow-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(242, 247, 244, 0.76);
}

/* ---------- 地址与准备 ---------- */
.page-contact .visit-grid {
  display: grid;
  gap: var(--pc-gap);
}

@media (min-width: 880px) {
  .page-contact .visit-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: start;
  }
}

.page-contact .visit-address {
  padding: clamp(20px, 2.8vw, 28px);
  border-left: 3px solid var(--lime);
}

.page-contact .visit-label {
  margin: 0 0 10px;
  font-size: 10.5px;
  letter-spacing: 0.22em;
  color: var(--lime);
  text-transform: uppercase;
}

.page-contact .visit-addr {
  margin: 0 0 18px;
  font-size: clamp(16px, 2.1vw, 19px);
  line-height: 1.6;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .visit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.page-contact .visit-note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--smoke);
}

.page-contact .visit-prep {
  padding: clamp(20px, 2.8vw, 28px);
}

.page-contact .visit-prep h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 2.1vw, 20px);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-contact .prep-list li {
  position: relative;
  padding: 10px 0 10px 26px;
  border-top: 1px solid var(--pc-line-soft);
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(242, 247, 244, 0.78);
}

.page-contact .prep-list li:first-child {
  border-top: 0;
}

.page-contact .prep-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 12px;
  height: 12px;
  border: 1px solid var(--sand);
  border-radius: 2px;
  opacity: 0.7;
}

.page-contact .prep-list strong {
  color: var(--paper);
}

/* ---------- 合作咨询 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: var(--pc-gap);
}

@media (min-width: 900px) {
  .page-contact .coop-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
    gap: clamp(28px, 4vw, 52px);
  }
}

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

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

.page-contact .coop-lede {
  margin: 0 0 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(242, 247, 244, 0.82);
  max-width: 64ch;
}

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

.page-contact .coop-details {
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .coop-details > summary {
  padding: 15px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

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

.page-contact .coop-details > summary::before {
  content: "▸ ";
  color: var(--lime);
}

.page-contact .coop-details[open] > summary::before {
  content: "▾ ";
}

.page-contact .coop-details > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-contact .coop-details-body {
  padding: 0 2px 20px;
}

.page-contact .coop-details-body ul {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-contact .coop-details-body li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 8px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(242, 247, 244, 0.78);
}

.page-contact .coop-details-body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 8px;
  height: 1px;
  background: var(--warm);
}

.page-contact .coop-details-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sand);
}

/* ---------- 前置入口 ---------- */
.page-contact .help-grid {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

@media (min-width: 700px) {
  .page-contact .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-contact .help-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-contact .help-card {
  display: block;
  padding: 22px clamp(16px, 2.2vw, 24px) 26px;
  background: var(--ink-700);
  color: inherit;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 200ms var(--ease), border-color 200ms var(--ease);
}

.page-contact .help-card:hover,
.page-contact .help-card:focus-visible {
  background: var(--ink-600);
  border-left-color: var(--lime);
  outline: none;
}

.page-contact .help-card-num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--smoke);
  margin-bottom: 12px;
}

.page-contact .help-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  letter-spacing: -0.01em;
}

.page-contact .help-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(242, 247, 244, 0.72);
}

.page-contact .help-foot {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--smoke);
}

.page-contact .inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(93, 224, 208, 0.4);
}

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

/* ---------- 动效 ---------- */
@keyframes pc-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(200, 255, 61, 0.45); }
  50% { box-shadow: 0 0 0 6px rgba(200, 255, 61, 0); }
}

@keyframes pc-fade-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .status-light,
  .page-contact .type-body {
    animation: none;
  }

  .page-contact .type-item > summary,
  .page-contact .flow-step,
  .page-contact .help-card,
  .page-contact .type-item > summary::after {
    transition: none;
  }
}