.page-contact {
  --fb-mail: var(--cyan);
  --fb-hot: var(--orange);
  --fb-form: var(--gold);
  padding-bottom: 0;
}

.page-contact .page-contact__crumbs {
  padding-top: 20px;
}

/* ============ 首屏 ============ */
.page-contact .fb-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 6vw, 66px) 0 clamp(26px, 5vw, 52px);
}

.page-contact .fb-hero__glow {
  position: absolute;
  top: -28%;
  right: -12%;
  width: min(660px, 92vw);
  height: min(660px, 92vw);
  pointer-events: none;
  background: radial-gradient(circle at 50% 50%, rgba(51, 242, 227, 0.20), rgba(51, 242, 227, 0) 62%);
}

.page-contact .fb-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .fb-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.page-contact .fb-hero__title {
  margin: 12px 0 16px;
  max-width: 15em;
  font-size: clamp(32px, 7.4vw, 68px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .fb-hero__lead {
  max-width: 46ch;
  margin: 0;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

/* ============ 主栅格 ============ */
.page-contact .fb-layout {
  display: grid;
  gap: clamp(30px, 4vw, 56px);
  padding-bottom: clamp(46px, 7vw, 88px);
}

.page-contact .fb-layout__main {
  min-width: 0;
}

.page-contact .fb-block {
  margin-top: clamp(34px, 5vw, 64px);
}

.page-contact .fb-block:first-child {
  margin-top: 0;
}

.page-contact .fb-block__head {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-contact .fb-block__title {
  margin: 8px 0 10px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 900;
  line-height: 1.24;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .fb-block__lead {
  max-width: 48ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ============ 三条通道 ============ */
.page-contact .fb-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb-chan {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(12, 23, 51, 0.92), rgba(5, 9, 26, 0.92));
  overflow: hidden;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-contact .fb-chan::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--fb-accent, var(--cyan));
}

.page-contact .fb-chan--mail { --fb-accent: var(--fb-mail); }
.page-contact .fb-chan--hot  { --fb-accent: var(--fb-hot); }
.page-contact .fb-chan--form { --fb-accent: var(--fb-form); }

.page-contact .fb-chan:hover {
  transform: translateY(-3px);
  border-color: var(--fb-accent, var(--cyan));
}

.page-contact .fb-chan__ico {
  display: block;
  width: 32px;
  height: 32px;
  color: var(--fb-accent, var(--cyan));
}

.page-contact .fb-chan__ico svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-contact .fb-chan__kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .fb-chan__title {
  margin: 0;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .fb-chan__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-contact .fb-chan__val {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--fb-accent, var(--cyan));
  overflow-wrap: anywhere;
}

/* ============ 提交前准备 ============ */
.page-contact .fb-prep__media {
  margin: 0 0 24px;
}

.page-contact .fb-prep__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .fb-prep__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb-prep__item {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

.page-contact .fb-prep__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .fb-prep__num {
  grid-row: 1 / span 2;
  padding-top: 3px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-contact .fb-prep__name {
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
}

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

/* ============ 字段说明 ============ */
.page-contact .fb-fields {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb-field {
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--line);
  transition: border-color var(--dur) var(--ease);
}

.page-contact .fb-field:first-child {
  border-top: 1px solid var(--line);
}

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

.page-contact .fb-field__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin-bottom: 8px;
}

.page-contact .fb-field__label {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: var(--text);
}

.page-contact .fb-field__hint {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-contact .fb-field__text {
  max-width: 56ch;
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

/* ============ 侧栏：处理时段 ============ */
.page-contact .fb-side {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(12, 23, 51, 0.92), rgba(5, 9, 26, 0.92));
}

.page-contact .fb-side__kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-contact .fb-side__title {
  margin: 8px 0 18px;
  font-size: 19px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .fb-clock {
  margin-bottom: 20px;
}

.page-contact .fb-clock__bar {
  position: relative;
  height: 8px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.page-contact .fb-clock__fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 37.5%;
  right: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan-deep), var(--cyan));
}

.page-contact .fb-clock__marks {
  display: flex;
  justify-content: space-between;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-contact .fb-side__list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb-side__item {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-contact .fb-side__key {
  margin: 0 0 5px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-contact .fb-side__val {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
}

/* ============ 商务合作 ============ */
.page-contact .fb-biz-block {
  padding-bottom: clamp(46px, 7vw, 88px);
}

.page-contact .fb-biz {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-contact .fb-biz__item {
  display: flex;
  flex-direction: column;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(12, 23, 51, 0.5);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-contact .fb-biz__item:hover {
  border-color: var(--cyan-deep);
  background: rgba(12, 23, 51, 0.78);
}

.page-contact .fb-biz__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-contact .fb-biz__text {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-contact .fb-biz__meta {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-size: 11.5px;
  line-height: 1.7;
  letter-spacing: 0.03em;
  color: var(--cyan);
}

/* ============ 联系信息 ============ */
.page-contact .fb-contact {
  border-top: 1px solid var(--line);
  padding: clamp(40px, 6vw, 78px) 0 clamp(42px, 6vw, 76px);
  background: linear-gradient(180deg, rgba(12, 23, 51, 0.55), rgba(5, 9, 26, 0));
}

.page-contact .fb-contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .fb-contact__title {
  margin: 8px 0 0;
  font-size: clamp(22px, 3.6vw, 30px);
  font-weight: 900;
  line-height: 1.26;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-contact .fb-contact__list {
  display: grid;
  gap: 0;
  margin: 22px 0 0;
  padding: 0;
}

.page-contact .fb-contact__row {
  display: grid;
  gap: 4px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .fb-contact__row:last-child {
  border-bottom: 1px solid var(--line);
}

.page-contact .fb-contact__key {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-contact .fb-contact__val {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-contact .fb-contact__note {
  max-width: 60ch;
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-contact .fb-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .fb-links__item a {
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 227, 0.32);
  padding-bottom: 2px;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-contact .fb-contact__media {
  margin: 0;
}

.page-contact .fb-contact__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ============ 滚动显现 ============ */
.page-contact [data-reveal] {
  transition: opacity 0.45s var(--ease), transform 0.45s var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

/* ============ 响应式 ============ */
@media (min-width: 620px) {
  .page-contact .fb-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-contact .fb-contact__row {
    grid-template-columns: 116px minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-contact .fb-contact__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
    gap: 44px;
  }
}

@media (min-width: 1000px) {
  .page-contact .fb-layout {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
  }

  .page-contact .fb-layout__side {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-chan,
  .page-contact .fb-biz__item,
  .page-contact .fb-field,
  .page-contact .fb-links__item a,
  .page-contact [data-reveal] {
    transition: none;
  }

  .page-contact .fb-chan:hover {
    transform: none;
  }
}

.page-contact {
  --reveal-delay: 0.3s;
}