.page-contact {
  --fb-gap: clamp(1rem, 2.4vw, 1.6rem);
  --fb-pad: clamp(1.15rem, 3vw, 1.85rem);
  --fb-border: 1px solid rgba(16, 20, 24, 0.14);
  --fb-border-light: 1px solid rgba(248, 244, 236, 0.18);
}

/* ============ 首屏 ============ */
.page-contact .fb-hero {
  position: relative;
  background:
    radial-gradient(90% 70% at 8% 4%, rgba(255, 107, 44, 0.26), transparent 62%),
    linear-gradient(168deg, var(--fog-blue) 0%, var(--fog-blue-ink) 58%, var(--ink) 100%);
  color: var(--warm);
  border-bottom: 5px solid var(--neon);
}

.page-contact .fb-hero .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: rgba(248, 244, 236, 0.62);
}

.page-contact .fb-hero .crumbs a {
  color: var(--neon-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}

.page-contact .fb-hero .crumbs a:hover,
.page-contact .fb-hero .crumbs a:focus-visible {
  border-bottom-color: currentColor;
}

.page-contact .fb-hero .crumbs__current {
  color: var(--warm);
}

.page-contact .fb-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-contact .fb-hero .kicker {
  color: var(--neon);
}

.page-contact .fb-hero h1 {
  margin: 0.35em 0 0.6em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.05rem, 6.6vw, 4.1rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--warm);
}

.page-contact .fb-hero__lede {
  max-width: 34em;
  margin: 0;
  font-size: clamp(1rem, 2.2vw, 1.15rem);
  line-height: 1.8;
  color: rgba(248, 244, 236, 0.86);
}

.page-contact .fb-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-contact .fb-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 1.4rem;
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: rgba(248, 244, 236, 0.68);
}

.page-contact .fb-hero__meta li {
  position: relative;
  padding-left: 0.95rem;
}

.page-contact .fb-hero__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.52em;
  width: 6px;
  height: 6px;
  background: var(--neon);
}

.page-contact .fb-hero__stack {
  display: grid;
  gap: var(--fb-gap);
}

.page-contact .fb-hero__stack .media {
  aspect-ratio: 7 / 5;
  border-color: rgba(248, 244, 236, 0.22);
}

.page-contact .fb-hero__stack .media img {
  height: 100%;
  object-fit: cover;
}

.page-contact .fb-hero__card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem 1rem;
  padding: 1rem 1.15rem;
  background: rgba(248, 244, 236, 0.07);
  border-left: 4px solid var(--neon);
}

.page-contact .fb-hero__card p {
  flex: 1 1 14rem;
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.65;
  color: rgba(248, 244, 236, 0.86);
}

/* ============ 通用媒体 ============ */
.page-contact .media {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--fb-border);
  background: linear-gradient(160deg, var(--fog-blue-ink), var(--ink));
}

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

/* ============ 章节头 ============ */
.page-contact .chapter {
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-contact .chapter__no {
  color: var(--neon);
  letter-spacing: 0.14em;
}

/* ============ 01 提交步骤 ============ */
.page-contact .fb-how {
  background: var(--warm);
}

.page-contact .fb-how__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 3vw, 2.2rem);
  align-items: start;
}

.page-contact .fb-steps {
  display: grid;
  gap: var(--fb-gap);
  margin: 0;
  padding: 0;
  list-style: none;
  align-content: start;
}

.page-contact .fb-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem 1.1rem;
  padding: var(--fb-pad);
  background: #fffdf8;
  border: var(--fb-border);
  box-shadow: 6px 6px 0 -1px var(--paper);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .fb-step:hover {
  transform: translateY(-3px);
  box-shadow: 6px 9px 0 -1px var(--paper);
}

.page-contact .fb-step > div {
  min-width: 0;
}

.page-contact .fb-step__no {
  display: grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1;
  color: var(--warm);
  background: var(--fog-blue);
}

.page-contact .fb-step h3 {
  margin: 0 0 0.45rem;
  font-size: 1.12rem;
  line-height: 1.4;
}

.page-contact .fb-step p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--charcoal);
}

.page-contact .fb-how__more {
  margin: clamp(1.4rem, 3vw, 2rem) 0 0;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-contact .fb-how__more a {
  color: var(--fog-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .fb-how__more a:hover {
  color: var(--neon);
}

/* ============ 02 反馈分类 ============ */
.page-contact .fb-cats__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--fb-gap);
}

.page-contact .fb-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  padding: calc(var(--fb-pad) + 4px) var(--fb-pad) var(--fb-pad);
  background: var(--warm);
  border: var(--fb-border);
  box-shadow: 6px 6px 0 -1px rgba(16, 20, 24, 0.08);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .fb-cat::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--neon);
}

.page-contact .fb-cat:hover {
  transform: translateY(-4px);
  box-shadow: 6px 10px 0 -1px rgba(16, 20, 24, 0.12);
}

.page-contact .fb-cat .tag {
  align-self: flex-start;
}

.page-contact .fb-cat h3 {
  margin: 0;
  font-size: 1.06rem;
  line-height: 1.45;
}

.page-contact .fb-cat p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.7;
  color: var(--charcoal);
}

.page-contact .fb-cat__meta {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.03em;
  color: var(--steel);
}

/* ============ 03 优先通道 ============ */
.page-contact .fb-priority__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--fb-gap);
}

.page-contact .fb-priority__card {
  padding: var(--fb-pad);
  background: var(--warm);
  border: var(--fb-border);
  border-left: 4px solid var(--fog-blue);
}

.page-contact .fb-priority__card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.1rem;
  line-height: 1.45;
}

.page-contact .fb-priority__card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--charcoal);
}

.page-contact .fb-track {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.7rem;
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  padding: 1rem 1.15rem;
  background: var(--warm);
  border: var(--fb-border);
}

.page-contact .fb-track__node {
  display: inline-flex;
  align-items: center;
  padding: 0.32rem 0.62rem;
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--steel);
  border: 1px dashed rgba(87, 112, 138, 0.5);
}

.page-contact .fb-track__node.is-on {
  color: var(--warm);
  background: var(--fog-blue);
  border-style: solid;
  border-color: var(--fog-blue);
}

.page-contact .fb-track__line {
  flex: 1 1 1.5rem;
  min-width: 1.5rem;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), rgba(255, 107, 44, 0.18));
}

.page-contact .fb-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem clamp(1.5rem, 5vw, 4rem);
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
  padding-top: 1.4rem;
  border-top: var(--fb-border);
}

.page-contact .fb-fact {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.page-contact .fb-fact__num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.2vw, 2.7rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--fog-blue);
}

.page-contact .fb-fact__label {
  font-size: 0.84rem;
  color: var(--steel);
}

/* ============ 04 客服渠道 ============ */
.page-contact .fb-channels {
  background: linear-gradient(180deg, var(--charcoal) 0%, var(--ink) 100%);
  color: var(--warm);
}

.page-contact .fb-channels .chapter__title {
  color: var(--warm);
}

.page-contact .fb-channels .chapter__no {
  color: var(--neon);
}

.page-contact .fb-channels .chapter__note {
  color: rgba(248, 244, 236, 0.66);
}

.page-contact .fb-channels__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--fb-gap);
}

.page-contact .fb-channel {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: var(--fb-pad);
  background: rgba(248, 244, 236, 0.05);
  border: var(--fb-border-light);
  border-top: 3px solid rgba(255, 107, 44, 0.55);
}

.page-contact .fb-channel .tag {
  align-self: flex-start;
}

.page-contact .fb-channel h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.45;
  color: var(--warm);
}

.page-contact .fb-channel p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: rgba(248, 244, 236, 0.76);
}

.page-contact p.fb-channel__val {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.4vw, 1.1rem);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--warm);
  overflow-wrap: anywhere;
}

.page-contact p.fb-channel__val--addr {
  font-family: var(--font-body);
  font-size: 1rem;
}

.page-contact .fb-channel--lead {
  background: rgba(27, 79, 114, 0.28);
}

/* ============ 05 常见联系场景 ============ */
.page-contact .fb-scenes {
  background: var(--warm);
}

.page-contact .fb-scene-list {
  display: grid;
  gap: 0;
  border-top: var(--fb-border);
}

.page-contact .fb-scene {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.5rem 1.1rem;
  padding: clamp(1.2rem, 3vw, 1.9rem) 0;
  border-bottom: var(--fb-border);
  transition: background-color 0.25s var(--ease);
}

.page-contact .fb-scene:hover {
  background: rgba(214, 230, 242, 0.38);
}

.page-contact .fb-scene__no {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--neon);
}

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

.page-contact .fb-scene__body h3 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  line-height: 1.45;
}

.page-contact .fb-scene__body p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--charcoal);
}

.page-contact .fb-scene__link {
  grid-column: 2;
  justify-self: start;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--fog-blue);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(27, 79, 114, 0.35);
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .fb-scene__link:hover,
.page-contact .fb-scene__link:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

.page-contact .fb-scenes__outro {
  margin: clamp(1.5rem, 3.5vw, 2.4rem) 0 0;
  padding-left: 1rem;
  border-left: 3px solid var(--neon);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--steel);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-contact .fb-cats__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 800px) {
  .page-contact .fb-priority__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 861px) {
  .page-contact .fb-scene {
    grid-template-columns: 3.5rem minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-contact .fb-scene__link {
    grid-column: 3;
    justify-self: end;
  }
}

@media (min-width: 961px) {
  .page-contact .fb-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-contact .fb-how__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }
}

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

  .page-contact .fb-channel--lead {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1100px) {
  .page-contact .fb-cats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-step,
  .page-contact .fb-cat,
  .page-contact .fb-scene,
  .page-contact .fb-scene__link,
  .page-contact .fb-hero .crumbs a {
    transition: none;
  }

  .page-contact .fb-step:hover,
  .page-contact .fb-cat:hover {
    transform: none;
  }
}