.page-contact {
  display: block;
  padding-bottom: 56px;
  color: var(--silver);
}

/* ============ 首屏框架 ============ */
.page-contact .hero {
  padding-block: 18px 0;
}

.page-contact .hero__frame {
  position: relative;
  border: 1px solid var(--line-strong);
  background: linear-gradient(158deg, var(--panel) 0%, var(--panel-2) 62%, #0a1224 100%);
  padding: 26px 18px 22px;
}

.page-contact .hero__frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--holo);
}

.page-contact .hero__frame::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46px;
  height: 46px;
  border-right: 2px solid var(--lava);
  border-bottom: 2px solid var(--lava);
  pointer-events: none;
}

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

.page-contact .hero__intro h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.04;
  letter-spacing: 0.015em;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--silver);
}

.page-contact .hero__lede {
  margin: 16px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(232, 240, 255, 0.8);
}

.page-contact .hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .hero__meta {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .hero__quick-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-card {
  display: grid;
  gap: 10px;
  margin: 12px 0 0;
}

.page-contact .contact-card__row {
  display: grid;
  gap: 3px;
  padding: 11px 13px;
  background: var(--panel-2);
  border-left: 2px solid var(--cyan);
}

.page-contact .contact-card__row:nth-child(2) {
  border-left-color: var(--lava);
}

.page-contact .contact-card__row:nth-child(3) {
  border-left-color: var(--violet);
}

.page-contact .contact-card__label {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .contact-card__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--silver);
  word-break: break-word;
}

.page-contact .contact-card__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ============ 迷你仪表 ============ */
.page-contact .gauge {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.page-contact .gauge__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .gauge__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.page-contact .gauge__tabs label {
  padding: 7px 10px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
  cursor: pointer;
}

.page-contact #g-line-topic:checked ~ .gauge__tabs label[for="g-line-topic"],
.page-contact #g-line-transfer:checked ~ .gauge__tabs label[for="g-line-transfer"],
.page-contact #g-line-column:checked ~ .gauge__tabs label[for="g-line-column"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-contact .gauge__body {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 14px;
  align-items: center;
  margin-top: 14px;
}

.page-contact .gauge__dial {
  --dial: 300deg;
  --dial-color: var(--cyan);
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: conic-gradient(
    from -60deg,
    var(--dial-color) 0deg,
    var(--dial-color) var(--dial),
    rgba(124, 141, 181, 0.18) var(--dial) 300deg,
    transparent 300deg 360deg
  );
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 11px), #000 calc(100% - 10px));
  mask: radial-gradient(farthest-side, transparent calc(100% - 11px), #000 calc(100% - 10px));
}

.page-contact #g-line-transfer:checked ~ .gauge__body .gauge__dial {
  --dial: 190deg;
  --dial-color: var(--lava);
}

.page-contact #g-line-column:checked ~ .gauge__body .gauge__dial {
  --dial: 250deg;
  --dial-color: var(--violet);
}

.page-contact .gauge__readout {
  display: none;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 240, 255, 0.78);
}

.page-contact #g-line-topic:checked ~ .gauge__body .gauge__readout--a,
.page-contact #g-line-transfer:checked ~ .gauge__body .gauge__readout--b,
.page-contact #g-line-column:checked ~ .gauge__body .gauge__readout--c {
  display: block;
}

.page-contact .hero__figure {
  margin: 24px 0 0;
}

/* ============ 章节索引 ============ */
.page-contact .index-rail {
  margin-top: 20px;
}

.page-contact .index-rail ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .index-rail a {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--mist);
  text-decoration: none;
}

.page-contact .index-rail a:hover,
.page-contact .index-rail a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ============ 通用章节 ============ */
.page-contact .section {
  padding-block: 46px 0;
}

.page-contact .section-head {
  max-width: 720px;
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 38px);
  line-height: 1.08;
  letter-spacing: 0.015em;
  font-weight: 800;
  color: var(--silver);
}

.page-contact .section-lede {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(232, 240, 255, 0.78);
}

/* ============ 联系入口三栏 ============ */
.page-contact .channels {
  margin-top: 24px;
}

.page-contact .channel {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 20px 18px;
}

.page-contact .channel h3 {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--silver);
}

.page-contact .channel p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(232, 240, 255, 0.78);
}

.page-contact .channel__meta {
  font-size: 13px;
  color: var(--mist);
}

.page-contact .channel a {
  color: var(--cyan);
}

/* ============ 合作类型切换 ============ */
.page-contact .coop {
  margin-top: 24px;
}

.page-contact .coop__layout {
  display: grid;
  gap: 22px;
}

.page-contact .coop__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-contact .coop__tabs label {
  padding: 10px 14px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
  cursor: pointer;
  clip-path: polygon(0 0, 100% 0, 100% 72%, calc(100% - 9px) 100%, 0 100%);
}

.page-contact #coop-sub:checked ~ .coop__tabs label[for="coop-sub"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-contact #coop-club:checked ~ .coop__tabs label[for="coop-club"],
.page-contact #coop-biz:checked ~ .coop__tabs label[for="coop-biz"] {
  background: var(--lava);
  border-color: var(--lava);
  color: var(--ink);
}

.page-contact #coop-media:checked ~ .coop__tabs label[for="coop-media"] {
  background: var(--violet);
  border-color: var(--violet);
  color: var(--silver);
}

.page-contact .coop__panels {
  margin-top: 18px;
}

.page-contact .coop__panel {
  display: none;
  padding: 22px 18px 24px;
  border-left: 3px solid var(--cyan);
}

.page-contact .coop__panel--club {
  border-left-color: var(--lava);
}

.page-contact .coop__panel--media {
  border-left-color: var(--violet);
}

.page-contact .coop__panel--biz {
  border-left-color: var(--lava);
}

.page-contact #coop-sub:checked ~ .coop__panels .coop__panel--sub,
.page-contact #coop-club:checked ~ .coop__panels .coop__panel--club,
.page-contact #coop-media:checked ~ .coop__panels .coop__panel--media,
.page-contact #coop-biz:checked ~ .coop__panels .coop__panel--biz {
  display: block;
}

.page-contact .coop__panel h3 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-contact .coop__panel > p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 240, 255, 0.8);
}

.page-contact .coop__list {
  display: grid;
  gap: 9px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .coop__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(232, 240, 255, 0.78);
}

.page-contact .coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
}

.page-contact .coop__panel--club .coop__list li::before,
.page-contact .coop__panel--biz .coop__list li::before {
  background: var(--lava);
}

.page-contact .coop__panel--media .coop__list li::before {
  background: var(--violet);
}

.page-contact .coop__panel .btn {
  margin-top: 18px;
}

.page-contact .coop__figure {
  margin: 0;
}

/* ============ 服务与交付 ============ */
.page-contact .delivery {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-contact .delivery__card {
  padding: 20px 18px 22px;
  border-top: 2px solid var(--cyan);
}

.page-contact .delivery__card:nth-child(2) {
  border-top-color: var(--lava);
}

.page-contact .delivery__card:nth-child(3) {
  border-top-color: var(--violet);
}

.page-contact .delivery__card:nth-child(4) {
  border-top-color: var(--cyan);
}

.page-contact .delivery__num {
  margin: 0;
  font-size: 34px;
  line-height: 1;
  font-weight: 700;
}

.page-contact .delivery__card h3 {
  margin: 10px 0 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-contact .delivery__card p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(232, 240, 255, 0.78);
}

.page-contact .delivery__note {
  margin-top: 16px;
  padding: 22px 18px 24px;
}

.page-contact .delivery__note h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-contact .delivery__note p {
  margin: 12px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 240, 255, 0.8);
}

.page-contact .delivery__note .btn {
  margin-top: 18px;
}

/* ============ 响应流程 ============ */
.page-contact .flow__track {
  display: none;
  margin: 28px 0 0;
}

.page-contact .flow__track svg {
  display: block;
  width: 100%;
  height: 20px;
}

.page-contact .flow {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .flow__step details {
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.page-contact .flow__step details[open] {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(40, 240, 210, 0.16);
}

.page-contact .flow__step summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .flow__num {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.08em;
}

.page-contact .flow__name {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-contact .flow__step p {
  margin: 0;
  padding: 0 16px 16px 44px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(232, 240, 255, 0.78);
}

/* ============ 常见咨询 ============ */
.page-contact .qa {
  margin-top: 24px;
  align-items: start;
}

.page-contact .qa__item {
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.page-contact .qa__item[open] {
  border-color: var(--line-strong);
}

.page-contact .qa__item summary {
  position: relative;
  padding: 15px 44px 15px 16px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--silver);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .qa__item summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.4;
  color: var(--cyan);
}

.page-contact .qa__item[open] summary::after {
  content: "–";
  color: var(--lava);
}

.page-contact .qa__item p {
  margin: 0;
  padding: 0 16px 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(232, 240, 255, 0.78);
}

.page-contact .qa__item a {
  color: var(--cyan);
}

/* ============ 备案与主体信息 ============ */
.page-contact .registry {
  margin-top: 22px;
  padding: 22px 18px 24px;
}

.page-contact .registry__list {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-contact .registry__row {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-contact .registry__row dt {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-contact .registry__row dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--silver);
  word-break: break-word;
}

.page-contact .registry__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ============ 结尾行动区 ============ */
.page-contact .cta {
  padding-block: 46px 0;
}

.page-contact .cta__panel {
  position: relative;
  padding: 28px 20px 30px;
  background: linear-gradient(120deg, rgba(11, 58, 91, 0.9) 0%, rgba(16, 26, 51, 0.96) 70%);
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-contact .cta__panel h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4.4vw, 32px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--silver);
}

.page-contact .cta__panel p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 240, 255, 0.8);
}

.page-contact .cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ============ 中等屏幕 ============ */
@media (min-width: 640px) {
  .page-contact .hero__frame {
    padding: 34px 28px 30px;
  }

  .page-contact .section {
    padding-block: 58px 0;
  }

  .page-contact .cta {
    padding-block: 58px 0;
  }

  .page-contact .delivery {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .page-contact .channel {
    padding: 24px 22px;
  }

  .page-contact .coop__panel {
    padding: 26px 24px 28px;
  }

  .page-contact .registry {
    padding: 26px 24px 28px;
  }

  .page-contact .registry__list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 28px;
  }

  .page-contact .registry__row:nth-last-child(2) {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-contact .cta__panel {
    padding: 36px 32px 38px;
  }
}

/* ============ 宽屏 ============ */
@media (min-width: 1000px) {
  .page-contact .hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 38px;
    align-items: start;
  }

  .page-contact .hero__figure {
    margin-top: 30px;
  }

  .page-contact .coop__layout {
    grid-template-columns: 1.4fr 1fr;
    gap: 30px;
    align-items: start;
  }

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

  .page-contact .delivery {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-contact .flow__track {
    display: block;
  }

  .page-contact .flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 12px;
  }

  .page-contact .flow__step p {
    padding-left: 16px;
  }

  .page-contact .hero__frame::after {
    width: 64px;
    height: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .index-rail a,
  .page-contact .qa__item,
  .page-contact .coop__panel,
  .page-contact .gauge__tabs label {
    transition: none;
  }
}
<<<END>>>