.page-contact {
  --fb-edge: rgba(141, 154, 192, .26);
  --fb-edge-cyan: rgba(47, 233, 218, .55);
  --fb-panel: rgba(8, 13, 31, .48);
  --fb-grad: linear-gradient(135deg, var(--oy-orange), var(--oy-violet));
  background: var(--oy-void);
}

.page-contact .fb-crumb {
  padding-top: clamp(92px, 15vw, 136px);
  padding-bottom: clamp(8px, 1.5vw, 16px);
}

.page-contact .fy-none,
.page-contact .fb-crumb .oy-breadcrumb {
  font-size: var(--oy-fs-13);
  letter-spacing: .02em;
  color: var(--oy-slate);
}

/* ---------- 首屏 ---------- */
.page-contact .fb-hero {
  position: relative;
  padding-block: clamp(16px, 3vw, 28px) clamp(44px, 7vw, 88px);
  overflow: hidden;
}

.page-contact .fb-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--oy-violet), var(--oy-cyan), transparent);
  opacity: .5;
}

.page-contact .fb-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-contact .fb-hero__plate {
  position: relative;
  margin: 0;
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  overflow: hidden;
  background: var(--oy-indigo);
  box-shadow: var(--oy-shadow);
}

.page-contact .fb-hero__plate::before,
.page-contact .fb-hero__plate::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border: 1px solid var(--oy-cyan);
  opacity: .75;
  pointer-events: none;
}

.page-contact .fb-hero__plate::before {
  top: 12px;
  left: 12px;
  border-right: 0;
  border-bottom: 0;
}

.page-contact .fb-hero__plate::after {
  right: 12px;
  bottom: 12px;
  border-left: 0;
  border-top: 0;
}

.page-contact .fb-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.85) contrast(1.05);
}

.page-contact .fb-hero__plate-note {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  padding: 34px 18px 14px;
  font-size: var(--oy-fs-13);
  color: var(--oy-slate);
  background: linear-gradient(to top, rgba(8, 13, 31, .94), rgba(8, 13, 31, 0));
}

.page-contact .fb-hero__plate-note .oy-mono {
  color: var(--oy-mist);
}

.page-contact .fb-hero__copy h1 {
  margin: 18px 0 20px;
  font-size: clamp(34px, 6.6vw, 68px);
  font-weight: 800;
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--oy-mist);
  max-width: 18ch;
}

.page-contact .fb-hero__copy .oy-lead {
  max-width: 60ch;
  color: var(--oy-slate);
  font-size: var(--oy-fs-16);
  line-height: 1.75;
}

.page-contact .fb-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--fb-edge);
}

.page-contact .fb-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-contact .fb-hero__facts .oy-mono {
  font-size: var(--oy-fs-24);
  font-weight: 700;
  color: var(--oy-cyan);
}

.page-contact .fb-hero__facts em {
  font-style: normal;
  font-size: var(--oy-fs-13);
  color: var(--oy-slate);
}

/* ---------- 01 联系方式 ---------- */
.page-contact .fb-ways .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-ways__grid {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .fb-way {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  background: linear-gradient(180deg, var(--fb-panel), rgba(8, 13, 31, .18));
  box-shadow: var(--oy-shadow);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.page-contact .fb-way:hover,
.page-contact .fb-way:focus-within {
  transform: translateY(-4px);
  border-color: var(--fb-edge-cyan);
  box-shadow: var(--oy-shadow-lift);
}

.page-contact .fb-way__label {
  display: block;
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .08em;
  color: var(--oy-bronze);
}

.page-contact .fb-way__name {
  margin: 12px 0 8px;
  font-size: var(--oy-fs-24);
  font-weight: 700;
  line-height: 1.2;
  color: var(--oy-mist);
}

.page-contact .fb-way__value {
  display: block;
  font-size: var(--oy-fs-16);
  color: var(--oy-cyan);
  word-break: break-all;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--fb-edge);
}

.page-contact .fb-way__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .fb-way__list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--oy-fs-16);
  line-height: 1.65;
  color: var(--oy-slate);
}

.page-contact .fb-way__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 1px;
  background: var(--oy-cyan);
}

/* ---------- 02 反馈写法 ---------- */
.page-contact .fb-form .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-fields {
  margin-top: clamp(26px, 4vw, 44px);
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  overflow: hidden;
  background: var(--fb-edge);
  display: grid;
  gap: 1px;
}

.page-contact .fb-field {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px) clamp(18px, 2.6vw, 30px);
  background: var(--oy-void);
  transition: background .3s ease;
}

.page-contact .fb-field:hover {
  background: var(--oy-indigo);
}

.page-contact .fb-field__key {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-13);
  letter-spacing: .04em;
  color: var(--oy-cyan);
}

.page-contact .fb-field__hint {
  margin: 0;
  font-size: var(--oy-fs-16);
  line-height: 1.72;
  color: var(--oy-slate);
}

/* ---------- 03 分类与顺序 ---------- */
.page-contact .fb-tracks .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-tracks__grid {
  margin-top: clamp(26px, 4vw, 44px);
  display: grid;
  gap: var(--oy-gap);
}

.page-contact .fb-track {
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  background: var(--fb-panel);
  box-shadow: var(--oy-shadow);
  transition: border-color .3s ease, transform .3s ease;
}

.page-contact .fb-track:hover {
  border-color: var(--fb-edge-cyan);
}

.page-contact .fb-track[open] {
  border-color: var(--fb-edge-cyan);
  transform: translateY(-2px);
}

.page-contact .fb-track > summary {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: clamp(18px, 2.4vw, 24px);
  cursor: pointer;
  list-style: none;
}

.page-contact .fb-track > summary::-webkit-details-marker {
  display: none;
}

.page-contact .fb-track__no {
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-24);
  font-weight: 700;
  line-height: 1;
  color: var(--oy-bronze);
}

.page-contact .fb-track__head {
  display: grid;
  gap: 6px;
}

.page-contact .fb-track__title {
  font-size: var(--oy-fs-18);
  font-weight: 700;
  color: var(--oy-mist);
}

.page-contact .fb-track__meta {
  font-size: var(--oy-fs-13);
  line-height: 1.6;
  color: var(--oy-slate);
}

.page-contact .fb-track .oy-panel__body {
  padding: 0 clamp(18px, 2.4vw, 24px) clamp(18px, 2.4vw, 24px);
  border-top: 1px solid var(--fb-edge);
  margin-top: 2px;
  padding-top: 16px;
  font-size: var(--oy-fs-16);
  line-height: 1.72;
  color: var(--oy-slate);
}

.page-contact .fb-track .oy-panel__body p {
  margin: 0 0 12px;
}

.page-contact .fb-track__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .fb-track__list li {
  position: relative;
  padding-left: 16px;
  font-size: var(--oy-fs-16);
}

.page-contact .fb-track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .7em;
  width: 6px;
  height: 1px;
  background: var(--oy-orange);
}

.page-contact .fb-tracks__figure {
  margin: clamp(30px, 4vw, 52px) 0 0;
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  overflow: hidden;
  background: var(--oy-indigo);
}

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

.page-contact .fb-tracks__figure .oy-media__caption {
  display: block;
  padding: 14px clamp(16px, 2vw, 24px);
  font-size: var(--oy-fs-13);
  line-height: 1.7;
  color: var(--oy-slate);
  border-top: 1px solid var(--fb-edge);
}

/* ---------- 04 数据类材料 ---------- */
.page-contact .fb-need .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-need__grid {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .fb-need__card {
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  background: linear-gradient(180deg, var(--fb-panel), rgba(8, 13, 31, .16));
  transition: border-color .3s ease, transform .3s ease;
}

.page-contact .fb-need__card:hover {
  transform: translateY(-4px);
  border-color: var(--fb-edge-cyan);
}

.page-contact .fb-need__label {
  display: block;
  font-family: var(--oy-mono);
  font-size: var(--oy-fs-12);
  letter-spacing: .1em;
  color: var(--oy-bronze);
  margin-bottom: 16px;
}

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

.page-contact .fb-need__list li {
  position: relative;
  padding-left: 18px;
  font-size: var(--oy-fs-16);
  line-height: 1.7;
  color: var(--oy-mist);
  border-bottom: 1px solid rgba(141, 154, 192, .14);
  padding-bottom: 12px;
}

.page-contact .fb-need__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .fb-need__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--oy-cyan);
}

.page-contact .fb-need__tip {
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 18px clamp(18px, 2.4vw, 26px);
  border-left: 2px solid var(--oy-orange);
  background: rgba(255, 106, 43, .06);
  font-size: var(--oy-fs-16);
  line-height: 1.72;
  color: var(--oy-slate);
}

.page-contact .fb-need__tip a {
  color: var(--oy-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--fb-edge-cyan);
}

/* ---------- 05 合作 ---------- */
.page-contact .fb-biz .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-biz__grid {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .fb-biz__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--oy-gap);
}

.page-contact .fb-biz__list li {
  padding-bottom: var(--oy-gap);
  border-bottom: 1px solid rgba(233, 239, 255, .12);
}

.page-contact .fb-biz__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-contact .fb-biz__tag {
  display: inline-block;
  margin-bottom: 10px;
}

.page-contact .fb-biz__list p {
  margin: 0;
  font-size: var(--oy-fs-16);
  line-height: 1.75;
  color: var(--oy-mist);
  max-width: 56ch;
}

.page-contact .fb-biz__list p .oy-mono {
  color: var(--oy-cyan);
}

.page-contact .fb-biz__aside {
  align-self: start;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid rgba(217, 166, 90, .34);
  border-radius: var(--oy-r-sm);
  background: linear-gradient(180deg, rgba(8, 13, 31, .62), rgba(8, 13, 31, .22));
}

.page-contact .fb-biz__aside-title {
  margin: 0 0 12px;
  font-size: var(--oy-fs-24);
  font-weight: 700;
  color: var(--oy-mist);
}

.page-contact .fb-biz__aside p {
  margin: 0 0 18px;
  font-size: var(--oy-fs-16);
  line-height: 1.75;
  color: var(--oy-slate);
}

.page-contact .fb-biz__aside .oy-btn {
  margin-bottom: 4px;
}

.page-contact .fb-biz__aside-note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(217, 166, 90, .28);
  font-size: var(--oy-fs-13);
  line-height: 1.7;
}

.page-contact .fb-biz__aside-note .oy-mono {
  color: var(--oy-bronze);
  word-break: break-all;
}

/* ---------- 06 服务时间 ---------- */
.page-contact .fb-hours .oy-container {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-contact .fb-hours__grid {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-contact .fb-hour {
  padding: clamp(20px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--fb-edge);
  transition: border-color .3s ease;
}

.page-contact .fb-hour:hover {
  border-color: var(--fb-edge-cyan);
}

.page-contact .fb-hour__k {
  display: block;
  font-size: var(--oy-fs-12);
  letter-spacing: .1em;
  color: var(--oy-bronze);
}

.page-contact .fb-hour__v {
  margin: 12px 0 10px;
  font-size: var(--oy-fs-24);
  font-weight: 700;
  color: var(--oy-cyan);
}

.page-contact .fb-hour__d {
  margin: 0;
  font-size: var(--oy-fs-16);
  line-height: 1.72;
  color: var(--oy-slate);
}

.page-contact .fb-desk {
  margin-top: clamp(36px, 5vw, 60px);
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--fb-edge);
  border-radius: var(--oy-r-sm);
  background: linear-gradient(160deg, rgba(18, 26, 60, .8), rgba(8, 13, 31, .4));
  box-shadow: var(--oy-shadow);
}

.page-contact .fb-desk__title {
  margin: 0 0 20px;
  font-size: var(--oy-fs-18);
  font-weight: 700;
  color: var(--oy-mist);
}

.page-contact .fb-desk__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-contact .fb-desk__row {
  display: grid;
  gap: 6px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(141, 154, 192, .16);
}

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

.page-contact .fb-desk__row dt {
  font-size: var(--oy-fs-13);
  color: var(--oy-slate);
}

.page-contact .fb-desk__row dd {
  margin: 0;
  font-size: var(--oy-fs-16);
  line-height: 1.6;
  color: var(--oy-mist);
  word-break: break-word;
}

.page-contact .fb-desk__row dd.oy-mono {
  color: var(--oy-cyan);
}

.page-contact .fb-desk__note {
  margin: 22px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--fb-edge);
  font-size: var(--oy-fs-13);
  line-height: 1.75;
  color: var(--oy-slate);
}

.page-contact .fb-next {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(28px, 4vw, 44px);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-contact .fb-tracks__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .fb-hero__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-contact .fb-hero__plate {
    margin-top: clamp(28px, 5vw, 68px);
  }

  .page-contact .fb-field {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 10px 30px;
    align-items: baseline;
  }

  .page-contact .fb-desk__row {
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: baseline;
    gap: 12px 24px;
  }
}

@media (min-width: 1080px) {
  .page-contact .fb-tracks__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .fb-tracks__grid .fb-track[open] {
    grid-column: span 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-way,
  .page-contact .fb-need__card,
  .page-contact .fb-track,
  .page-contact .fb-field,
  .page-contact .fb-hour {
    transition: none;
  }

  .page-contact .fb-way:hover,
  .page-contact .fb-way:focus-within,
  .page-contact .fb-need__card:hover,
  .page-contact .fb-track[open] {
    transform: none;
  }
}