.page-contact {
  position: relative;
  overflow-x: hidden;
  padding-bottom: 72px;
  color: var(--paper);
}

.page-contact .crumbs {
  padding-top: 22px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel);
}

.page-contact .crumbs a {
  color: var(--steel);
  text-decoration: none;
  transition: color .25s var(--ease);
}

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

.page-contact .crumbs__sep {
  margin: 0 8px;
  opacity: .6;
}

/* ---------- hero ---------- */

.page-contact .contact-hero {
  position: relative;
  padding: 30px 0 10px;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(25, 224, 210, .10), transparent 55%),
    radial-gradient(90% 70% at 0% 100%, rgba(245, 197, 66, .07), transparent 60%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 42%;
  height: 240px;
  background: linear-gradient(135deg, rgba(25, 224, 210, .16), transparent 68%);
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-contact .contact-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-contact .contact-hero__intro .display-1 {
  margin: 10px 0 0;
  font-size: clamp(32px, 5.2vw, 60px);
  line-height: 1.1;
  letter-spacing: -.01em;
}

.page-contact .contact-hero__intro .lede {
  max-width: 46ch;
  margin: 18px 0 0;
  color: var(--steel);
}

.page-contact .contact-hero__media {
  position: relative;
  margin: 26px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-panel);
}

.page-contact .contact-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .contact-hero__media::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--signal), transparent);
}

.page-contact .contact-hero__stamp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 18px 0 0;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-contact .contact-hero__stamp::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--signal);
}

/* ---------- 玻璃联系卡 ---------- */

.page-contact .contact-card {
  position: relative;
  padding: 24px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 24px 64px rgba(5, 10, 24, .55);
}

.page-contact .contact-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  right: 20px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--signal));
}

.page-contact .contact-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
}

.page-contact .contact-card__head .display-3 {
  flex: 1 1 auto;
  margin: 0;
}

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

.page-contact .contact-card__list .contact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px 12px;
  padding: 16px 0;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-card__list .contact-row__label {
  grid-column: 1 / -1;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--steel);
}

.page-contact .contact-card__list .contact-row__value {
  min-width: 0;
  font-size: 15px;
  color: var(--paper);
  word-break: break-all;
}

.page-contact .copy-btn {
  appearance: none;
  font: inherit;
  font-size: 12px;
  letter-spacing: .06em;
  white-space: nowrap;
  padding: 6px 14px;
  border: 1px solid rgba(25, 224, 210, .36);
  border-radius: 999px;
  background: rgba(25, 224, 210, .08);
  color: var(--cyan);
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .copy-btn:hover {
  background: var(--glass-strong);
  border-color: var(--cyan);
}

.page-contact .copy-btn[data-copied] {
  color: var(--signal);
  border-color: var(--signal);
  background: rgba(245, 197, 66, .14);
}

.page-contact .contact-card__foot {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 通用章节 ---------- */

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

.page-contact .section__head {
  max-width: 64ch;
  margin-bottom: 24px;
}

.page-contact .section__title {
  margin: 8px 0 0;
}

.page-contact .section__lede {
  margin: 12px 0 0;
  color: var(--steel);
  line-height: 1.75;
}

/* ---------- 通道分流列表 ---------- */

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

.page-contact .contact-route .data-row {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-top: 1px solid var(--line-soft);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-contact .contact-route .data-row:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-contact .contact-route .data-row:hover {
  transform: translateX(6px);
  border-top-color: rgba(25, 224, 210, .5);
}

.page-contact .contact-route .data-row__index {
  grid-row: 1 / span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-contact .contact-route .data-row__title {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-contact .contact-route .data-row__meta {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 合作共建 ---------- */

.page-contact .collab {
  display: grid;
  gap: 26px;
  align-items: start;
}

.page-contact .collab__intro .lede {
  margin: 14px 0 0;
  color: var(--steel);
}

.page-contact .collab__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 20px 0 0;
  padding: 0;
}

.page-contact .collab__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--signal);
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper);
}

.page-contact .collab__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-panel);
}

.page-contact .collab__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .collab__media::after {
  content: "数据共建";
  position: absolute;
  left: 16px;
  bottom: 16px;
  padding: 5px 10px;
  border-radius: var(--r-xs);
  background: var(--signal);
  color: var(--bg-ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

/* ---------- 反馈路径 ---------- */

.page-contact .fb-grid {
  display: grid;
  gap: 16px;
}

.page-contact .fb-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(16, 31, 66, .92), rgba(11, 24, 54, .68));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-contact .fb-card:hover {
  border-color: rgba(25, 224, 210, .5);
  transform: translateY(-3px);
}

.page-contact .fb-card h3 {
  margin: 0;
  font-size: 17px;
  color: var(--paper);
}

.page-contact .fb-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .fb-card a {
  margin-top: auto;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease);
}

.page-contact .fb-card a:hover {
  border-bottom-color: var(--cyan);
}

.page-contact .fb-dock-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border: 1px dashed rgba(141, 162, 192, .34);
  border-radius: var(--r-sm);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 回复节奏（暖纸层） ---------- */

.page-contact .contact-note {
  position: relative;
  overflow: hidden;
  padding: 28px 22px;
  border-radius: var(--r-lg);
  background: var(--paper);
  color: var(--ink-text);
}

.page-contact .contact-note::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--cyan), var(--signal));
}

.page-contact .contact-note .index-tag {
  color: var(--ink-text-soft);
}

.page-contact .contact-note h2 {
  margin: 8px 0 0;
  color: var(--ink-text);
}

.page-contact .contact-note > p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-text-soft);
}

.page-contact .contact-note__rows {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-contact .contact-note__row {
  padding-top: 12px;
  border-top: 1px solid rgba(22, 33, 60, .16);
}

.page-contact .contact-note__row strong {
  display: block;
  font-size: 15px;
  color: var(--ink-text);
}

.page-contact .contact-note__row span {
  display: block;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--ink-text-soft);
}

/* ---------- 重庆落款 ---------- */

.page-contact .contact-region__grid {
  display: grid;
  gap: 24px;
  align-items: end;
  padding-top: 30px;
  border-top: 1px solid var(--line-soft);
}

.page-contact .contact-region__main .display-2 {
  margin: 10px 0 0;
}

.page-contact .contact-region__main > p {
  max-width: 62ch;
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--steel);
}

.page-contact .contact-region__addr {
  display: inline-block;
  margin: 20px 0 0;
  padding: 8px 14px;
  border-left: 3px solid var(--cyan);
  background: rgba(25, 224, 210, .07);
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--paper);
}

/* ---------- 响应式 ---------- */

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

  .page-contact .contact-note {
    padding: 34px 30px;
  }

  .page-contact .contact-note__rows {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    padding-top: 44px;
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 56px;
  }

  .page-contact .collab {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }

  .page-contact .contact-region__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }

  .page-contact .contact-region__aside {
    text-align: right;
  }

  .page-contact .section {
    padding-top: 76px;
  }
}