.page-contact {
  --fb-pad: clamp(46px, 7vw, 92px);
  background: var(--abyss);
  color: var(--white);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-contact .fb-hero {
  position: relative;
  padding: clamp(104px, 16vw, 168px) 0 clamp(44px, 6vw, 76px);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(53, 230, 218, .16), transparent 62%),
    radial-gradient(90% 80% at 0% 110%, rgba(255, 107, 74, .10), transparent 66%),
    var(--abyss);
  border-bottom: 1px solid var(--steel);
}

.page-contact .fb-hero .label {
  color: var(--cyan);
  margin: 0;
}

.page-contact .fb-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-contact .fb-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.1rem, 8vw, 4.4rem);
  line-height: .98;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-contact .fb-hero__lead {
  margin: 0;
  font-size: clamp(.98rem, 2.6vw, 1.08rem);
  line-height: 1.85;
  color: var(--white);
  opacity: .88;
  max-width: 46ch;
}

.page-contact .fb-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--steel);
  display: grid;
  gap: 16px;
}

.page-contact .fb-fact__k {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-contact .fb-fact__v {
  display: block;
  margin-top: 5px;
  font-size: .8rem;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 560px) {
  .page-contact .fb-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .fb-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
    gap: 48px;
  }
}

/* ---------- 章节标题组 ---------- */
.page-contact .fb-head {
  max-width: 720px;
  margin-bottom: clamp(24px, 3.4vw, 40px);
}

.page-contact .fb-head .label {
  color: var(--cyan);
  margin: 0;
}

.page-contact .fb-head h2 {
  margin: .32em 0 .42em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.65rem, 5.2vw, 2.85rem);
  line-height: 1.04;
  letter-spacing: -.01em;
}

.page-contact .fb-head__sub {
  margin: 0;
  font-size: .96rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 反馈类型 ---------- */
.page-contact .fb-types {
  padding: var(--fb-pad) 0;
  background: var(--abyss);
}

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

.page-contact .fb-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 26px 22px 22px;
  text-decoration: none;
  color: var(--white);
  background: var(--console);
  border: 1px solid var(--steel);
  border-radius: 36px 18px 32px 22px;
  transition: transform .25s var(--ease), border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .fb-card--data { border-radius: 42px 16px 34px 20px; }
.page-contact .fb-card--idea { border-radius: 18px 40px 20px 38px; }
.page-contact .fb-card--partner { border-radius: 32px 32px 14px 42px; }

.page-contact .fb-card:hover,
.page-contact .fb-card:focus-visible {
  transform: translateY(-4px) scale(1.014);
  border-color: var(--cyan);
  background: linear-gradient(160deg, var(--cyan-veil), var(--console) 65%);
  outline: none;
}

.page-contact .fb-card__k {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .fb-card--partner .fb-card__k { color: var(--coral); }

.page-contact .fb-card__name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.5rem;
  line-height: 1.1;
}

.page-contact .fb-card__desc {
  font-size: .9rem;
  line-height: 1.68;
  color: var(--mist);
}

.page-contact .fb-card__go {
  margin-top: auto;
  padding-top: 12px;
  font-size: .78rem;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-contact .fb-stage {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  gap: 14px;
  max-width: 840px;
}

.page-contact .fb-panel {
  display: block;
  scroll-margin-top: 96px;
  padding: 24px 22px;
  background: rgba(11, 44, 66, .55);
  border: 1px solid var(--steel);
  border-radius: var(--radius-soft);
}

.page-contact .fb-stage:has(.fb-panel:target) .fb-panel:not(:target) {
  display: none;
}

.page-contact .fb-panel:target {
  border-color: var(--cyan);
  background: linear-gradient(180deg, var(--cyan-veil), rgba(11, 44, 66, .72));
}

.page-contact .fb-panel h3 {
  margin: 0 0 .55em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.22rem;
  line-height: 1.2;
  color: var(--white);
}

.page-contact .fb-panel > p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .fb-panel__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 7px;
  font-size: .88rem;
  line-height: 1.6;
  color: var(--white);
}

.page-contact .fb-panel__list li {
  display: flex;
  gap: 10px;
}

.page-contact .fb-panel__list li::before {
  content: "";
  flex: 0 0 6px;
  height: 6px;
  margin-top: .58em;
  border-radius: 50%;
  background: var(--cyan-deep);
}

.page-contact .fb-panel__note {
  margin-top: 16px !important;
  font-family: var(--font-mono);
  font-size: .78rem !important;
  letter-spacing: .01em;
  color: var(--cyan) !important;
}

@media (min-width: 720px) {
  .page-contact .fb-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

/* ---------- 联系方式 + 纠错材料 ---------- */
.page-contact .fb-reach {
  padding: var(--fb-pad) 0;
  background: var(--console);
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
}

.page-contact .fb-reach__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 56px);
}

.page-contact .fb-reach__aside .label {
  color: var(--cyan);
  margin: 0;
}

.page-contact .fb-reach__aside h2 {
  margin: .34em 0 .8em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.6rem, 4.8vw, 2.4rem);
  line-height: 1.06;
}

.page-contact .fb-contact {
  display: grid;
  gap: 18px;
  padding: 24px 22px;
  background: var(--abyss);
  border: 1px solid var(--steel);
  border-radius: var(--radius-soft);
}

.page-contact .fb-contact__k {
  display: block;
  margin-bottom: 6px;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-contact .fb-contact__v {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 3.6vw, 1.1rem);
  letter-spacing: -.01em;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .fb-contact__v--mail { color: var(--cyan); }

.page-contact .fb-contact__note {
  margin: 18px 0 0;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .fb-contact__more {
  margin: 12px 0 0;
  font-size: .84rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .fb-contact__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 218, .4);
}

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

.page-contact .fb-need {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-contact .fb-need__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--steel);
}

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

.page-contact .fb-need__num {
  font-family: var(--font-mono);
  font-size: .82rem;
  color: var(--cyan);
  padding-top: .22em;
}

.page-contact .fb-need__t {
  margin: 0 0 .4em;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: .01em;
  color: var(--white);
}

.page-contact .fb-need__d {
  margin: 0;
  font-size: .89rem;
  line-height: 1.74;
  color: var(--mist);
}

.page-contact .fb-sample {
  margin-top: 26px;
  padding: 22px 20px;
  border: 1px dashed var(--steel);
  border-radius: 20px;
  background: rgba(6, 24, 38, .6);
}

.page-contact .fb-sample__k {
  margin: 0 0 8px;
  font-size: .7rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-contact .fb-sample__line {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: .84rem;
  line-height: 1.6;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .fb-sample__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
  font-size: .86rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .fb-sample__list li {
  display: flex;
  gap: 10px;
}

.page-contact .fb-sample__list li::before {
  content: "·";
  color: var(--coral);
  font-weight: 700;
}

.page-contact .fb-shot {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
}

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

@media (min-width: 900px) {
  .page-contact .fb-reach__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .fb-reach__aside {
    position: sticky;
    top: 88px;
  }
}

/* ---------- 处理流程 ---------- */
.page-contact .fb-flow {
  padding: var(--fb-pad) 0;
  background:
    radial-gradient(80% 60% at 100% 0%, rgba(21, 154, 147, .14), transparent 60%),
    var(--abyss);
}

.page-contact .fb-flow__fig {
  margin: 0 0 clamp(26px, 3.4vw, 40px);
}

.page-contact .fb-steps {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  max-width: 760px;
}

.page-contact .fb-step {
  position: relative;
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 18px;
  padding-bottom: 30px;
  outline: none;
}

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

.page-contact .fb-step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 16px;
  top: 40px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(var(--steel), rgba(18, 64, 92, .15));
}

.page-contact .fb-step__num {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--cyan-deep);
  background: rgba(53, 230, 218, .07);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--cyan);
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .fb-step:hover .fb-step__num,
.page-contact .fb-step:focus-within .fb-step__num {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--abyss);
}

.page-contact .fb-step__body h3 {
  margin: .18em 0 .42em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.14rem;
  letter-spacing: .01em;
  color: var(--white);
}

.page-contact .fb-step__body p {
  margin: 0;
  font-size: .9rem;
  line-height: 1.76;
  color: var(--mist);
}

.page-contact .fb-step__note {
  margin-top: 10px !important;
  font-family: var(--font-mono);
  font-size: .78rem !important;
  line-height: 1.6 !important;
  color: var(--cyan) !important;
}

@media (min-width: 900px) {
  .page-contact .fb-step__note {
    max-height: 0;
    opacity: 0;
    transform: translateY(-4px);
    overflow: hidden;
    margin-top: 0 !important;
    transition: max-height .3s var(--ease), opacity .3s var(--ease), transform .3s var(--ease), margin-top .3s var(--ease);
  }

  .page-contact .fb-step:hover .fb-step__note,
  .page-contact .fb-step:focus-within .fb-step__note {
    max-height: 90px;
    opacity: 1;
    transform: none;
    margin-top: 10px !important;
  }
}

/* ---------- 合作咨询 ---------- */
.page-contact .fb-partner {
  padding: var(--fb-pad) 0;
  background: var(--frost);
  color: var(--abyss);
}

.page-contact .fb-partner .fb-head .label { color: var(--cyan-deep); }

.page-contact .fb-partner .fb-head h2 { color: var(--abyss); }

.page-contact .fb-partner .fb-head__sub { color: var(--steel); }

.page-contact .fb-partner__grid {
  display: grid;
  gap: 18px;
}

.page-contact .fb-partner__card {
  padding: 26px 22px;
  background: rgba(255, 255, 255, .74);
  border: 1px solid rgba(18, 64, 92, .18);
  border-radius: 30px 14px 28px 16px;
}

.page-contact .fb-partner__card--org {
  border-radius: 14px 32px 16px 30px;
}

.page-contact .fb-partner__card h3 {
  margin: 0 0 .6em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.34rem;
  line-height: 1.15;
  color: var(--abyss);
}

.page-contact .fb-partner__card p {
  margin: 0 0 18px;
  font-size: .92rem;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .fb-partner__link {
  display: inline-block;
  font-size: .86rem;
  letter-spacing: .04em;
  text-decoration: none;
  color: var(--abyss);
  border-bottom: 2px solid var(--coral);
  padding-bottom: 3px;
  transition: color .2s var(--ease);
}

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

@media (min-width: 760px) {
  .page-contact .fb-partner__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
}

/* ---------- 尾条 ---------- */
.page-contact .fb-strip {
  padding: 16px 0;
  background: var(--abyss);
  border-top: 1px solid var(--steel);
}

.page-contact .fb-strip__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 26px;
  font-size: 12px;
  color: var(--mist);
}

.page-contact .fb-strip__mail {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-contact .fb-strip__links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 0;
}

.page-contact .fb-strip__links a {
  color: var(--mist);
  text-decoration: none;
  transition: color .2s var(--ease);
}

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

.page-contact .fb-strip__icp {
  margin: 0;
  font-size: 12px;
  color: var(--mist);
}

@media (min-width: 760px) {
  .page-contact .fb-strip__icp { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-card,
  .page-contact .fb-step__num,
  .page-contact .fb-step__note,
  .page-contact .fb-partner__link {
    transition: none;
  }

  .page-contact .fb-card:hover,
  .page-contact .fb-card:focus-visible {
    transform: none;
  }
}