.page-contact {
  --c-rail-w: 336px;
  --c-gap: clamp(26px, 3.6vw, 56px);
  --c-pad: clamp(20px, 2.6vw, 30px);
  --c-soft: rgba(18, 48, 107, .32);
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(56px, 8vw, 112px);
  color: var(--bd-white);
  background:
    radial-gradient(120% 78% at 8% -4%, rgba(30, 79, 216, .34), rgba(8, 26, 56, 0) 62%),
    radial-gradient(88% 62% at 96% 6%, rgba(23, 195, 162, .14), rgba(8, 26, 56, 0) 66%),
    radial-gradient(70% 50% at 60% 100%, rgba(255, 91, 46, .07), rgba(8, 26, 56, 0) 70%),
    var(--bd-navy);
}

.page-contact [id] {
  scroll-margin-top: calc(var(--bd-header-h) + 24px);
}

.page-contact .c-crumb {
  padding-top: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-contact .c-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(18px, 3vw, 34px) 0 clamp(38px, 6vw, 76px);
}

.page-contact .c-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -32%;
  right: -14%;
  width: min(720px, 86vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 46% 52%, rgba(91, 141, 255, .30), rgba(91, 141, 255, 0) 68%);
  filter: blur(4px);
  pointer-events: none;
}

.page-contact .c-hero__grid {
  display: grid;
  gap: clamp(30px, 4.4vw, 54px);
  align-items: end;
}

.page-contact .c-hero__lead {
  max-width: 44ch;
}

.page-contact .c-hero__title {
  margin: 14px 0 0;
  font-weight: 250;
  line-height: 1.06;
  letter-spacing: -0.02em;
}

.page-contact .c-hero__mark {
  position: relative;
  display: inline-block;
  color: var(--bd-white);
}

.page-contact .c-hero__mark::after {
  content: "";
  position: absolute;
  left: -0.04em;
  right: -0.04em;
  bottom: 0.08em;
  height: 0.42em;
  border-radius: var(--bd-r-pill);
  background: linear-gradient(90deg, rgba(255, 91, 46, .72), rgba(255, 91, 46, .06));
  z-index: -1;
}

.page-contact .c-hero__lede {
  margin-top: clamp(20px, 2.6vw, 28px);
  color: rgba(243, 246, 252, .82);
  max-width: 46ch;
}

.page-contact .c-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-contact .c-hero__stats {
  display: grid;
  gap: 12px;
}

.page-contact .c-stat {
  position: relative;
  padding: 18px 20px 18px 26px;
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r);
  background: linear-gradient(158deg, rgba(30, 79, 216, .20), rgba(8, 26, 56, .52));
  overflow: hidden;
}

.page-contact .c-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 3px;
  border-radius: var(--bd-r-pill);
  background: var(--bd-blue-soft);
}

.page-contact .c-stat--teal::before { background: var(--bd-teal); }
.page-contact .c-stat--amber::before { background: var(--bd-amber); }

.page-contact .c-stat__num {
  font-family: var(--bd-font-index);
  font-size: clamp(19px, 2.4vw, 23px);
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--bd-white);
}

.page-contact .c-stat__label {
  margin-top: 6px;
  font-size: 14px;
  color: rgba(201, 212, 230, .82);
}

/* ---------- 主体骨架 ---------- */

.page-contact .c-shell {
  display: grid;
  gap: clamp(34px, 4.6vw, 60px);
  align-items: start;
}

.page-contact .c-rail {
  display: grid;
  gap: 18px;
}

.page-contact .c-railcard {
  padding: var(--c-pad);
  border: 1px solid var(--bd-line-strong);
  border-radius: var(--bd-r-lg);
  background:
    linear-gradient(168deg, rgba(30, 79, 216, .20), rgba(11, 34, 71, .78) 58%),
    var(--bd-glass);
  box-shadow: var(--bd-shadow);
}

.page-contact .c-railcard__eyebrow {
  margin: 0;
  color: var(--bd-silver);
}

.page-contact .c-mono {
  font-family: var(--bd-font-index);
  letter-spacing: 0.01em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .c-railcard__value {
  margin: 6px 0 12px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--bd-white);
}

.page-contact .c-railcard__rule {
  height: 1px;
  margin: 18px 0;
  border: 0;
  background: var(--bd-line);
}

.page-contact .c-railcard__note {
  margin-top: 10px;
  font-size: 13px;
  color: var(--bd-teal);
}

.page-contact .c-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--bd-line-strong);
  border-radius: var(--bd-r-pill);
  background: rgba(30, 79, 216, .14);
  color: var(--bd-white);
  font-size: 13px;
  cursor: pointer;
  transition: border-color .25s var(--bd-ease), background .25s var(--bd-ease), transform .25s var(--bd-ease);
}

.page-contact .c-copy:hover {
  border-color: var(--bd-blue-soft);
  background: rgba(30, 79, 216, .3);
  transform: translateY(-2px);
}

.page-contact .c-copy:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: 2px;
}

.page-contact .c-anchors {
  padding: 18px 6px 6px;
}

.page-contact .c-anchors__title {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bd-silver);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.page-contact .c-anchors__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-contact .c-anchors__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--bd-r-sm);
  color: rgba(243, 246, 252, .78);
  text-decoration: none;
  font-size: 14px;
  transition: background .22s var(--bd-ease), color .22s var(--bd-ease);
}

.page-contact .c-anchors__link:hover,
.page-contact .c-anchors__link:focus-visible {
  background: rgba(30, 79, 216, .22);
  color: var(--bd-white);
}

.page-contact .c-anchors__link:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: 1px;
}

.page-contact .c-anchors__num {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bd-teal);
}

/* ---------- 内容流 ---------- */

.page-contact .c-flow {
  display: grid;
  gap: clamp(36px, 4.6vw, 64px);
  min-width: 0;
}

.page-contact .c-block {
  min-width: 0;
  padding-top: clamp(30px, 4vw, 52px);
  border-top: 1px solid var(--bd-line);
}

.page-contact .c-block__head {
  max-width: 64ch;
}

.page-contact .c-block__head .bd-eyebrow {
  margin: 0 0 10px;
  color: var(--bd-blue-soft);
}

.page-contact .c-block__lede {
  margin-top: 14px;
  color: rgba(201, 212, 230, .84);
}

.page-contact .c-aside {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 2px solid rgba(23, 195, 162, .5);
  color: rgba(201, 212, 230, .8);
}

.page-contact .c-twocol {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .c-panel {
  padding: var(--c-pad);
  border-radius: var(--bd-r);
  border: 1px solid var(--bd-line);
  background: var(--c-soft);
}

.page-contact .c-panel--accent {
  border-color: rgba(255, 91, 46, .34);
  background: linear-gradient(160deg, rgba(255, 91, 46, .14), rgba(8, 26, 56, .5));
}

.page-contact .c-panel .bd-h3 {
  margin: 0 0 14px;
}

.page-contact .c-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .c-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(243, 246, 252, .86);
}

.page-contact .c-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bd-blue-soft);
}

.page-contact .c-list--tight {
  gap: 8px;
  margin-top: 12px;
}

.page-contact .c-list--tight li {
  font-size: 14px;
  color: rgba(201, 212, 230, .86);
}

.page-contact .c-list--tight li::before {
  background: var(--bd-teal);
}

.page-contact .c-stepslist {
  list-style: none;
  counter-reset: cstep;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .c-stepslist li {
  position: relative;
  counter-increment: cstep;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(243, 246, 252, .84);
}

.page-contact .c-stepslist li::before {
  content: counter(cstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.16em;
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bd-orange);
}

.page-contact .c-stepslist__k {
  display: inline-block;
  margin-right: 8px;
  font-weight: 600;
  color: var(--bd-white);
}

/* ---------- 分段控件 ---------- */

.page-contact .c-tabs {
  margin-top: clamp(24px, 3.4vw, 36px);
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r-lg);
  background: linear-gradient(180deg, rgba(11, 34, 71, .68), rgba(8, 26, 56, .5));
}

.page-contact .c-tabs__hint {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bd-silver);
  margin-bottom: 14px;
}

.page-contact .c-tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border: 0;
  padding: 0;
  margin: 0 0 20px;
}

.page-contact .c-tab {
  padding: 9px 18px;
  border: 1px solid var(--bd-line-strong);
  border-radius: var(--bd-r-pill);
  background: transparent;
  color: rgba(243, 246, 252, .76);
  font-size: 14px;
  cursor: pointer;
  transition: border-color .22s var(--bd-ease), background .22s var(--bd-ease), color .22s var(--bd-ease);
}

.page-contact .c-tab:hover {
  border-color: var(--bd-blue-soft);
  color: var(--bd-white);
}

.page-contact .c-tab[aria-selected="true"] {
  background: var(--bd-blue);
  border-color: var(--bd-blue-soft);
  color: var(--bd-white);
  box-shadow: 0 0 0 3px rgba(30, 79, 216, .22);
}

.page-contact .c-tab:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: 2px;
}

.page-contact .c-tabpanel {
  padding: 0;
  border: 0;
  background: none;
}

.page-contact .c-tabpanel p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(243, 246, 252, .86);
}

/* ---------- 时间条 ---------- */

.page-contact .c-media {
  margin: clamp(20px, 3vw, 30px) 0;
}

.page-contact .c-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: tstep;
}

.page-contact .c-timeline__item {
  position: relative;
  padding: 18px 20px 18px 44px;
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r-sm);
  background: rgba(11, 34, 71, .46);
}

.page-contact .c-timeline__dot {
  position: absolute;
  left: 20px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--bd-teal);
  box-shadow: 0 0 0 5px rgba(23, 195, 162, .14);
}

.page-contact .c-timeline__step {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bd-silver);
  margin-bottom: 6px;
}

.page-contact .c-timeline__desc {
  font-size: 15px;
  line-height: 1.72;
  color: rgba(243, 246, 252, .86);
}

/* ---------- 合作 ---------- */

.page-contact .c-partner {
  display: grid;
  gap: clamp(22px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .c-details {
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r);
  background: rgba(11, 34, 71, .42);
  padding: 0;
  overflow: hidden;
}

.page-contact .c-details + .c-details {
  margin-top: 14px;
}

.page-contact .c-details .bd-details__summary {
  padding: 18px 20px;
  font-size: 16px;
  color: var(--bd-white);
  cursor: pointer;
  list-style: none;
}

.page-contact .c-details .bd-details__summary::-webkit-details-marker {
  display: none;
}

.page-contact .c-details .bd-details__summary::after {
  content: "＋";
  float: right;
  margin-left: 12px;
  color: var(--bd-blue-soft);
  font-size: 15px;
}

.page-contact .c-details[open] .bd-details__summary::after {
  content: "－";
  color: var(--bd-teal);
}

.page-contact .c-details .bd-details__summary:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: -2px;
}

.page-contact .c-details .bd-details__body {
  padding: 0 20px 20px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(243, 246, 252, .84);
}

.page-contact .c-partner__figure {
  margin: 0;
}

/* ---------- 联系渠道 ---------- */

.page-contact .c-channels {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .c-channel {
  padding: var(--c-pad);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r);
  background: rgba(11, 34, 71, .42);
}

.page-contact .c-channel--primary {
  border-color: rgba(30, 79, 216, .5);
  background: linear-gradient(160deg, rgba(30, 79, 216, .22), rgba(8, 26, 56, .54));
}

.page-contact .c-channel__tag {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--bd-blue-soft);
  margin-bottom: 10px;
}

.page-contact .c-channel__value {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.5;
  color: var(--bd-white);
}

.page-contact .c-channel__desc {
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(201, 212, 230, .86);
  margin-bottom: 14px;
}

.page-contact .c-reachfoot {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .c-reachfoot p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(201, 212, 230, .8);
}

.page-contact .c-reachfoot a {
  color: var(--bd-blue-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .c-reachfoot a:hover {
  color: var(--bd-white);
}

.page-contact .c-reachfoot a:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 支持节奏 ---------- */

.page-contact .c-priority {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .c-priority__item {
  padding: var(--c-pad);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r);
  background: rgba(11, 34, 71, .38);
}

.page-contact .c-priority__item .bd-h3 {
  margin: 14px 0 8px;
}

.page-contact .c-priority__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(201, 212, 230, .86);
}

.page-contact .c-priority__item--ok {
  border-left: 3px solid var(--bd-teal);
}

.page-contact .c-priority__item--warn {
  border-left: 3px solid var(--bd-amber);
}

.page-contact .c-supportstrip {
  margin-top: 20px;
  padding: 20px 22px;
  border-radius: var(--bd-r);
  border: 1px dashed var(--bd-line-strong);
  background: rgba(8, 26, 56, .5);
}

.page-contact .c-supportstrip p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(201, 212, 230, .84);
}

/* ---------- 后续去向 ---------- */

.page-contact .c-outcomes {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-contact .c-outcome {
  position: relative;
  padding: var(--c-pad);
  border: 1px solid var(--bd-line);
  border-radius: var(--bd-r);
  background: linear-gradient(162deg, rgba(18, 48, 107, .5), rgba(8, 26, 56, .48));
}

.page-contact .c-outcome__idx {
  font-family: var(--bd-font-index);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--bd-orange);
  margin-bottom: 8px;
}

.page-contact .c-outcome .bd-h3 {
  margin: 0 0 10px;
}

.page-contact .c-outcome p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.74;
  color: rgba(201, 212, 230, .86);
}

.page-contact .c-closing {
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--bd-line);
  font-size: 15px;
  line-height: 1.76;
  color: rgba(201, 212, 230, .82);
}

.page-contact .c-closing a {
  color: var(--bd-blue-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .c-closing a:hover {
  color: var(--bd-white);
}

.page-contact .c-closing a:focus-visible {
  outline: 2px solid var(--bd-teal);
  outline-offset: 2px;
  border-radius: 3px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-contact .c-twocol {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .c-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .c-channel--primary {
    grid-column: 1 / -1;
  }

  .page-contact .c-timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .c-outcomes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .c-hero__stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .c-partner {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 38%);
    align-items: start;
  }

  .page-contact .c-partner__figure {
    position: sticky;
    top: calc(var(--bd-header-h) + 24px);
  }

  .page-contact .c-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .c-priority {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .c-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .c-channel--primary {
    grid-column: auto;
  }
}

@media (min-width: 1024px) {
  .page-contact .c-hero__grid {
    grid-template-columns: minmax(0, 1.42fr) minmax(272px, .78fr);
  }

  .page-contact .c-hero__stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
  }

  .page-contact .c-stat:nth-child(2) {
    margin-left: 18px;
  }

  .page-contact .c-stat:nth-child(3) {
    margin-left: 6px;
  }

  .page-contact .c-shell {
    grid-template-columns: var(--c-rail-w) minmax(0, 1fr);
    gap: var(--c-gap);
  }

  .page-contact .c-rail {
    position: sticky;
    top: calc(var(--bd-header-h) + 22px);
  }
}

@media (min-width: 1240px) {
  .page-contact .c-flow {
    padding-right: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .c-copy,
  .page-contact .c-tab,
  .page-contact .c-anchors__link {
    transition: none;
  }

  .page-contact .c-copy:hover {
    transform: none;
  }
}