.page-contact {
  background: var(--ink);
  color: var(--text);
  font-family: var(--font-body);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 4vw, 36px) 0 clamp(36px, 6vw, 72px);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(15, 59, 49, 0.95) 0%, rgba(5, 16, 12, 0) 62%),
    linear-gradient(180deg, rgba(11, 20, 17, 0.9) 0%, rgba(5, 16, 12, 0) 70%);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-contact .contact-hero .shell {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumb {
  margin-bottom: clamp(24px, 5vw, 52px);
}

.page-contact .hero-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: center;
}

.page-contact .hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin: 14px 0 0;
}

.page-contact .hero-lede {
  margin: 18px 0 0;
  max-width: 38ch;
  color: var(--dim);
  font-size: 16px;
  line-height: 1.8;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .hero-meta {
  margin-top: 22px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--dim);
}

.page-contact .hero-media {
  width: 100%;
  margin: 0;
  border: 1px solid var(--line);
  position: relative;
}

.page-contact .hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(5, 16, 12, 0) 40%, rgba(5, 16, 12, 0.55) 100%);
  pointer-events: none;
}

.page-contact .hero-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    grid-template-areas: "media copy";
    gap: clamp(32px, 5vw, 64px);
  }
  .page-contact .hero-media { grid-area: media; }
  .page-contact .hero-copy { grid-area: copy; }
}

/* ---------- 三条通道 ---------- */
.page-contact .channel-grid {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .channel-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 20px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}

.page-contact .channel-card:hover,
.page-contact .channel-card:focus-within {
  border-color: var(--amber);
  transform: translateX(4px);
}

.page-contact .channel-card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.01em;
}

.page-contact .channel-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.5;
  color: var(--text);
  text-decoration: none;
  word-break: break-word;
  border-bottom: 1px solid var(--line);
  padding-bottom: 10px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-contact .channel-card:hover .channel-value {
  color: var(--cyan);
  border-color: rgba(59, 240, 192, 0.5);
}

.page-contact .channel-value--addr {
  font-style: normal;
  font-size: 15px;
  line-height: 1.7;
}

.page-contact .channel-use {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .channel-meta {
  margin: auto 0 0;
  padding-top: 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .channel-meta dt {
  font-family: var(--font-mono);
  color: var(--dim);
  text-transform: uppercase;
}

.page-contact .channel-meta dd {
  margin: 0;
  color: var(--amber);
}

@media (min-width: 760px) {
  .page-contact .channel-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* ---------- 流程 ---------- */
.page-contact .flow-lede {
  margin: 14px 0 0;
  max-width: 44ch;
  color: var(--dim);
  font-size: 15px;
  line-height: 1.8;
}

.page-contact .flow-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: none;
}

.page-contact .flow-step {
  position: relative;
  padding: 20px 18px 18px;
  background: var(--ink-2);
  border: 1px solid var(--line);
  border-top: 3px solid var(--teal);
  transition: border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}

.page-contact .flow-step::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 22px;
  height: 22px;
  background: linear-gradient(225deg, var(--ink) 0 50%, rgba(36, 53, 45, 0.9) 50% 100%);
  pointer-events: none;
}

.page-contact .flow-step:hover {
  border-color: var(--cyan);
  border-top-color: var(--amber);
  background: var(--panel);
}

.page-contact .flow-num {
  display: inline-block;
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--dim);
  transition: color var(--t) var(--ease);
}

.page-contact .flow-step:hover .flow-num { color: var(--cyan); }

.page-contact .flow-step h3 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
}

.page-contact .flow-step p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .flow-hint {
  padding-top: 10px;
  margin-top: 10px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  color: rgba(163, 184, 174, 0.75);
}

.page-contact .flow-visual {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-contact .flow-visual .media-frame {
  margin: 0;
  border: 1px solid var(--line);
}

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

.page-contact .flow-visual-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--dim);
  border-left: 2px solid var(--amber);
  padding-left: 12px;
}

@media (min-width: 720px) {
  .page-contact .flow-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

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

/* ---------- 反馈类型选项卡 ---------- */
.page-contact .fb-tabs {
  position: relative;
  margin-top: 28px;
}

.page-contact .fb-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  clip-path: inset(50%);
  pointer-events: none;
}

.page-contact .fb-tabbar {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  scrollbar-width: thin;
}

.page-contact .fb-tabbar label {
  flex: 0 0 auto;
  padding: 10px 16px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--dim);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease), background-color var(--t) var(--ease);
}

.page-contact .fb-tabbar label:hover {
  color: var(--text);
  border-color: var(--dim);
}

.page-contact #fb-1:checked ~ .fb-tabbar label[for="fb-1"],
.page-contact #fb-2:checked ~ .fb-tabbar label[for="fb-2"],
.page-contact #fb-3:checked ~ .fb-tabbar label[for="fb-3"],
.page-contact #fb-4:checked ~ .fb-tabbar label[for="fb-4"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(59, 240, 192, 0.06);
}

.page-contact .fb-pane {
  display: none;
  padding: 22px 0 4px;
  animation: contact-fade 160ms var(--ease);
}

@keyframes contact-fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

.page-contact #fb-1:checked ~ .fb-panes .fb-pane:nth-child(1),
.page-contact #fb-2:checked ~ .fb-panes .fb-pane:nth-child(2),
.page-contact #fb-3:checked ~ .fb-panes .fb-pane:nth-child(3),
.page-contact #fb-4:checked ~ .fb-panes .fb-pane:nth-child(4) {
  display: block;
}

.page-contact .fb-pane h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 21px;
}

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

.page-contact .check-list li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--dim);
  transition: border-color var(--t) var(--ease), color var(--t) var(--ease);
}

.page-contact .check-list li:hover {
  border-color: var(--cyan);
  color: var(--text);
}

.page-contact .check-list .mono {
  color: var(--amber);
  font-size: 13px;
}

@media (min-width: 820px) {
  .page-contact .check-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* ---------- 响应时效 ---------- */
.page-contact .response-lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dim);
}

.page-contact .response-note {
  margin: 16px 0 0;
  padding: 14px 16px;
  background: var(--panel);
  border-left: 2px solid var(--amber);
  font-size: 13px;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .route-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-contact .route-list li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .route-tag {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .route-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

.page-contact .stage-item {
  margin-top: 14px;
  padding: 0 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: border-color var(--t) var(--ease);
}

.page-contact .stage-item:hover { border-color: var(--amber); }

.page-contact .stage-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  font-size: 15px;
  font-weight: 500;
  list-style: none;
}

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

.page-contact .stage-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--amber);
  font-size: 16px;
}

.page-contact .stage-item[open] summary::after { content: "−"; }

.page-contact .stage-item p {
  margin: 0;
  padding: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dim);
}

/* ---------- 合作 ---------- */
.page-contact .coop-grid {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

.page-contact .coop-copy p {
  margin: 14px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--dim);
}

.page-contact .coop-link a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  transition: color var(--t) var(--ease);
}

.page-contact .coop-link a:hover { color: var(--cyan); }

.page-contact .coop-facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-contact .coop-facts li {
  background: var(--ink-2);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background-color var(--t) var(--ease);
}

.page-contact .coop-facts li:hover { background: var(--panel); }

.page-contact .coop-num {
  font-size: 34px;
  line-height: 1;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.page-contact .coop-label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--dim);
}

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

/* ---------- 地址与备案 ---------- */
.page-contact .address-strip {
  display: grid;
  gap: 22px;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-2);
  border: 1px solid var(--line);
  position: relative;
}

.page-contact .address-strip::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 96px;
  height: 3px;
  background: var(--cyan);
}

.page-contact .address-title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3vw, 28px);
}

.page-contact .address-text {
  margin: 12px 0 0;
  max-width: 48ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--dim);
}

.page-contact .address-side {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.page-contact .address-side-label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--dim);
}

.page-contact .address-steps {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text);
}

.page-contact .address-legal {
  margin: 18px 0 0;
  font-size: 12px;
  color: var(--dim);
  letter-spacing: 0.06em;
}

.page-contact .address-privacy {
  margin: 6px 0 0;
  font-size: 12px;
}

.page-contact .address-privacy a {
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

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

@media (min-width: 820px) {
  .page-contact .address-strip { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); align-items: start; }
  .page-contact .address-side {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-top: 0;
    padding-left: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel-card,
  .page-contact .flow-step,
  .page-contact .check-list li {
    transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
  }
  .page-contact .channel-card:hover,
  .page-contact .channel-card:focus-within {
    transform: none;
  }
  .page-contact .fb-pane { animation: none; }
}
<<<END>>>