.page-contact {
  --contact-pad: clamp(20px, 3vw, 34px);
  --contact-gap: clamp(16px, 2.2vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-intro {
  position: relative;
  padding-block: clamp(26px, 5vw, 64px) clamp(20px, 3.5vw, 44px);
  overflow: hidden;
}

.page-contact .contact-intro::after {
  content: "";
  position: absolute;
  right: -14%;
  top: 18%;
  width: 46vw;
  height: 46vw;
  max-width: 620px;
  max-height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 125, 246, .22), rgba(47, 125, 246, 0) 68%);
  pointer-events: none;
}

.page-contact .contact-intro__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.page-contact .contact-intro__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.2vw, 74px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--c-paper);
}

.page-contact .contact-intro__accent {
  display: inline-block;
  font-style: normal;
  color: var(--c-ink);
  background: var(--c-green);
  padding: 0 .18em;
  border-radius: 6px 14px 5px 12px;
  margin-inline-start: .04em;
}

.page-contact .contact-intro__lede {
  margin: 20px 0 0;
  max-width: 62ch;
  color: var(--c-muted);
}

.page-contact .contact-intro__hint {
  margin: 18px 0 0;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--c-blue-soft);
  border-left: 2px solid var(--c-orange);
  padding-left: 10px;
}

/* ---------- 主体栅格 ---------- */
.page-contact .contact-body {
  padding-block: clamp(10px, 2vw, 24px) clamp(34px, 5vw, 72px);
}

.page-contact .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--contact-gap);
  align-items: start;
}

@media (min-width: 940px) {
  .page-contact .contact-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
    gap: clamp(24px, 3.4vw, 52px);
  }
}

/* ---------- 左栏 ---------- */
.page-contact .contact-col {
  min-width: 0;
}

.page-contact .contact-skyline {
  margin: 0 0 var(--contact-gap);
}

.page-contact .contact-skyline .media__frame {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--c-line);
  aspect-ratio: 15 / 9;
}

.page-contact .contact-skyline .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(.78) contrast(1.06);
}

.page-contact .contact-col__label {
  margin-bottom: 12px;
}

.page-contact .channel {
  position: relative;
  margin-bottom: 14px;
  padding: var(--contact-pad);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  background: linear-gradient(158deg, rgba(11, 21, 38, .96), rgba(6, 11, 20, .88));
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .channel::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  border-radius: 3px 0 0 3px;
  background: var(--c-blue);
}

.page-contact .channel--phone::before { background: var(--c-orange); }
.page-contact .channel--addr::before { background: var(--c-green); }

.page-contact .channel:hover {
  transform: translateY(-4px);
  border-color: var(--c-blue-soft);
}

.page-contact .channel__key {
  margin: 0 0 10px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-muted);
}

.page-contact .channel__value {
  margin: 0 0 16px;
  color: var(--c-paper);
  word-break: break-word;
}

.page-contact .channel__value--mono {
  font-family: var(--font-label);
  font-weight: 500;
  font-size: clamp(17px, 3.2vw, 26px);
  letter-spacing: .01em;
  word-break: break-all;
}

.page-contact .channel__value--num {
  font-family: var(--font-score);
  font-weight: 900;
  font-size: clamp(36px, 8.4vw, 60px);
  line-height: .96;
  letter-spacing: -.01em;
}

.page-contact .channel__value--addr {
  font-size: clamp(15px, 2.4vw, 18px);
  line-height: 1.7;
}

.page-contact .channel__copy {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .contact-fineprint {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .contact-fineprint a {
  color: var(--c-blue-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 169, 255, .42);
}

.page-contact .contact-fineprint a:hover {
  color: var(--c-green);
  border-bottom-color: var(--c-green);
}

.page-contact .contact-legal {
  margin: 14px 0 0;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-muted);
  padding-top: 12px;
  border-top: 1px solid var(--c-line);
}

/* ---------- 右栏 ---------- */
.page-contact .contact-block {
  min-width: 0;
}

.page-contact .contact-block + .contact-block {
  margin-top: clamp(26px, 4vw, 44px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--c-line);
}

.page-contact .contact-block__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.6vw, 32px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--c-paper);
}

.page-contact .contact-block__lede {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .contact-block__note {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-paper);
  padding-left: 16px;
  border-left: 3px solid var(--c-orange);
}

/* 合作方向折叠 */
.page-contact .coop-list {
  margin-top: 20px;
}

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

.page-contact .coop:first-child {
  border-top-color: var(--c-blue);
}

.page-contact .coop__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(17px, 2.4vw, 22px);
  color: var(--c-paper);
  transition: color .25s var(--ease);
}

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

.page-contact .coop__head:hover { color: var(--c-blue-soft); }

.page-contact .coop__num {
  flex: 0 0 auto;
  font-family: var(--font-label);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

.page-contact .coop__name {
  flex: 1 1 auto;
}

.page-contact .coop__head::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-label);
  font-size: 18px;
  line-height: 1;
  color: var(--c-blue-soft);
  transition: transform .3s var(--ease), color .25s var(--ease);
}

.page-contact .coop[open] .coop__head::after {
  transform: rotate(45deg);
  color: var(--c-green);
}

.page-contact .coop__body {
  padding: 0 0 20px 26px;
}

.page-contact .coop__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
}

/* 反馈清单 */
.page-contact .feedback-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .feedback-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 13px 16px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-soft);
  background: rgba(11, 21, 38, .58);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .feedback-item:hover {
  border-color: var(--c-blue-soft);
}

.page-contact .feedback-item:has(.feedback-item__box:checked) {
  border-color: var(--c-green);
  background: rgba(184, 255, 60, .07);
}

.page-contact .feedback-item__box {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 3px 0 0;
  accent-color: var(--c-green);
  cursor: pointer;
}

.page-contact .feedback-item__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-paper);
  cursor: pointer;
}

.page-contact .feedback-media {
  margin: 22px 0 0;
}

.page-contact .feedback-media .media__frame {
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--c-line);
  aspect-ratio: 3 / 2;
}

.page-contact .feedback-media .media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 响应说明 */
.page-contact .response-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .response-item {
  display: grid;
  gap: 6px;
  padding: 14px 16px 14px 18px;
  border-left: 2px solid var(--c-line);
  transition: border-color .25s var(--ease);
}

.page-contact .response-item:hover {
  border-left-color: var(--c-blue);
}

.page-contact .response-item__key {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-blue-soft);
}

.page-contact .response-item__val {
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-muted);
}

.page-contact .response-item__val a {
  color: var(--c-paper);
  text-decoration: none;
  border-bottom: 1px solid var(--c-orange);
}

.page-contact .response-item__val a:hover {
  color: var(--c-orange);
}

/* ---------- 底部索引 ---------- */
.page-contact .contact-next {
  padding-block: clamp(30px, 5vw, 64px) clamp(40px, 6vw, 88px);
  border-top: 1px solid var(--c-line);
}

.page-contact .contact-next__title {
  margin: 12px 0 22px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 4.4vw, 40px);
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--c-paper);
}

.page-contact .next-rail {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-card);
  overflow: hidden;
}

@media (min-width: 700px) {
  .page-contact .next-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .next-card--mission {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1060px) {
  .page-contact .next-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-contact .next-card--mission {
    grid-column: auto;
  }
}

.page-contact .next-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--c-ink);
  color: inherit;
  text-decoration: none;
  transition: background .3s var(--ease);
}

.page-contact .next-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--c-blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s var(--ease);
}

.page-contact .next-card--news::before { background: var(--c-orange); }
.page-contact .next-card--mission::before { background: var(--c-green); }

.page-contact .next-card:hover {
  background: var(--c-table);
}

.page-contact .next-card:hover::before {
  transform: scaleX(1);
}

.page-contact .next-card__num {
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
}

.page-contact .next-card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(19px, 2.6vw, 24px);
  color: var(--c-paper);
}

.page-contact .next-card__desc {
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
}

.page-contact .next-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-family: var(--font-label);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-blue-soft);
}

.page-contact .next-card:hover .next-card__go {
  color: var(--c-green);
}

/* ---------- 窄屏收束 ---------- */
@media (max-width: 560px) {
  .page-contact .contact-intro__accent {
    display: block;
    margin-top: 8px;
  }

  .page-contact .channel__value--mono {
    font-size: 16px;
  }

  .page-contact .channel__value--num {
    font-size: 38px;
  }

  .page-contact .coop__body {
    padding-left: 0;
  }

  .page-contact .response-item {
    padding-left: 14px;
  }

  .page-contact .contact-block__note {
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .channel,
  .page-contact .next-card,
  .page-contact .next-card::before,
  .page-contact .coop__head,
  .page-contact .coop__head::after {
    transition: none;
  }
  .page-contact .channel:hover {
    transform: none;
  }
}