.page-contact {
  --fb-line: var(--line-light);
  --fb-line-soft: rgba(58, 63, 60, .12);
  background: var(--paper);
  color: var(--slate);
  padding-bottom: clamp(8px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-contact .fb-hero {
  padding: clamp(18px, 3vw, 36px) 0 clamp(30px, 4.4vw, 56px);
  border-bottom: 1px solid var(--fb-line);
}

.page-contact .fb-hero__inner {
  display: grid;
  gap: clamp(22px, 3vw, 44px);
  align-items: end;
}

.page-contact .fb-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(36px, 8vw, 64px);
  line-height: .96;
  letter-spacing: -.8px;
  color: var(--pit);
  margin: 10px 0 16px;
}

.page-contact .fb-hero__lede {
  margin: 0 0 18px;
  max-width: 42ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--slate);
}

.page-contact .fb-hero__meta {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--moss);
}

.page-contact .fb-hero__meta li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.page-contact .fb-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--orange);
  flex: none;
}

.page-contact .fb-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-contact .fb-hero__figure {
  margin: 0;
  position: relative;
}

.page-contact .fb-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--fb-line);
  filter: saturate(.86) contrast(1.04);
}

.page-contact .fb-hero__figure::after {
  content: "";
  position: absolute;
  inset: 9px 9px auto 9px;
  height: 1px;
  background: var(--signal);
  opacity: .55;
  pointer-events: none;
}

.page-contact .fb-hero__figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--moss);
}

/* ---------- 通用区块头 ---------- */
.page-contact .fb-sec-head {
  max-width: 64ch;
  margin-bottom: clamp(20px, 2.6vw, 34px);
}

.page-contact .fb-sec-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.05;
  letter-spacing: -.4px;
  color: var(--pit);
  margin: 8px 0 10px;
}

.page-contact .fb-sec-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate);
}

/* ---------- 反馈类型 ---------- */
.page-contact .fb-types {
  padding: clamp(30px, 4.4vw, 60px) 0;
  border-bottom: 1px solid var(--fb-line);
}

.page-contact .fb-types__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--fb-line);
  border: 1px solid var(--fb-line);
}

.page-contact .fb-type {
  position: relative;
  background: var(--paper);
  padding: clamp(18px, 2.4vw, 28px);
  transition: background .18s ease;
}

.page-contact .fb-type::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 3px;
  background: var(--orange);
  transition: width .28s ease;
}

.page-contact .fb-type:hover,
.page-contact .fb-type:focus-within {
  background: var(--paper-dim);
}

.page-contact .fb-type:hover::before,
.page-contact .fb-type:focus-within::before {
  width: 100%;
}

.page-contact .fb-type__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-contact .fb-type h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.2;
  letter-spacing: -.2px;
  color: var(--pit);
  margin: 0 0 8px;
}

.page-contact .fb-type__body {
  margin: 0 0 12px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .fb-type__need {
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed var(--fb-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

.page-contact .fb-type__need b {
  color: var(--pit);
  font-weight: 700;
}

/* ---------- 下载说明 ---------- */
.page-contact .fb-download {
  padding: clamp(30px, 4.4vw, 60px) 0;
  border-bottom: 1px solid var(--fb-line);
}

.page-contact .fb-download__inner {
  display: grid;
  gap: clamp(20px, 2.8vw, 36px);
  align-items: center;
}

.page-contact .fb-card-dark {
  background: var(--pit);
  color: var(--paper);
  border: 1px solid var(--pit);
  box-shadow: 12px 12px 0 rgba(14, 42, 34, .1);
}

.page-contact .fb-card-dark__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  background: var(--signal);
  color: var(--ink);
  padding: 10px clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(15px, 1.7vw, 19px);
  letter-spacing: -.2px;
  line-height: 1.25;
}

.page-contact .fb-card-dark__ver {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  background: var(--ink);
  color: var(--signal);
  padding: 3px 7px;
}

.page-contact .fb-card-dark__body {
  padding: clamp(16px, 2.2vw, 26px);
}

.page-contact .fb-card-dark__body > p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--paper-72);
}

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

.page-contact .fb-card-dark__list li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid var(--line-dark-soft);
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-72);
}

.page-contact .fb-card-dark__list li:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-contact .fb-card-dark__list li strong {
  color: var(--paper);
  font-weight: 700;
  margin-right: 4px;
}

.page-contact .fb-card-dark__list .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--signal);
  padding-top: 3px;
}

.page-contact .fb-card-dark__note {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper-60);
}

.page-contact .fb-link-light {
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid rgba(200, 255, 61, .45);
}

.page-contact .fb-link-light:hover {
  border-bottom-color: var(--signal);
}

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

.page-contact .fb-download__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--fb-line);
}

.page-contact .fb-download__figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--moss);
}

/* ---------- 提交前准备 ---------- */
.page-contact .fb-prepare {
  padding: clamp(30px, 4.4vw, 60px) 0;
  border-bottom: 1px solid var(--fb-line);
}

.page-contact .fb-prepare__inner {
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.page-contact .fb-check {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--fb-line);
}

.page-contact .fb-check li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--fb-line);
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--slate);
}

.page-contact .fb-check li::before {
  content: "";
  width: 13px;
  height: 13px;
  margin-top: 5px;
  border: 1px solid var(--orange);
  background: var(--orange);
  box-shadow: inset 0 0 0 3px var(--paper);
  transition: background .18s ease;
}

.page-contact .fb-check li:hover::before {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .fb-prepare__note {
  margin: 0;
  padding-left: 16px;
  border-left: 3px solid var(--signal);
  font-size: 14px;
  line-height: 1.75;
  color: var(--moss);
}

.page-contact .fb-link-dark {
  color: var(--pit);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-contact .fb-link-dark:hover {
  color: var(--orange);
}

/* ---------- 处理流程 ---------- */
.page-contact .fb-process {
  padding: clamp(30px, 4.4vw, 60px) 0;
  border-bottom: 1px solid var(--fb-line);
}

.page-contact .fb-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(18px, 2.4vw, 28px);
}

.page-contact .fb-flow__step {
  position: relative;
  padding-top: 34px;
}

.page-contact .fb-flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border: 1px solid var(--orange);
  background: var(--paper);
  border-radius: 50%;
  transition: background .18s ease, border-color .18s ease;
}

.page-contact .fb-flow__step::after {
  content: "";
  position: absolute;
  left: 15px;
  right: 0;
  top: 17px;
  height: 1px;
  background: var(--fb-line);
}

.page-contact .fb-flow__step:last-child::after {
  right: auto;
  width: 26px;
}

.page-contact .fb-flow__step:hover::before {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .fb-flow__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--pit);
  margin-bottom: 8px;
}

.page-contact .fb-flow__step h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.2;
  color: var(--pit);
  margin: 0 0 6px;
}

.page-contact .fb-flow__step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.74;
  color: var(--slate);
}

/* ---------- 联系方式 ---------- */
.page-contact .fb-contact {
  padding: clamp(30px, 4.4vw, 60px) 0 clamp(24px, 3vw, 40px);
}

.page-contact .fb-contact__grid {
  display: grid;
  gap: 1px;
  background: var(--fb-line);
  border: 1px solid var(--fb-line);
}

.page-contact .fb-contact__item {
  background: var(--paper);
  padding: clamp(16px, 2.2vw, 24px);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-contact .fb-contact__key {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--moss);
}

.page-contact .fb-contact__val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.7vw, 17px);
  line-height: 1.5;
  color: var(--pit);
  word-break: break-all;
}

.page-contact .fb-contact__val--addr {
  font-family: var(--font-body);
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.7;
  word-break: break-word;
}

.page-contact .fb-contact__hint {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--concrete);
}

.page-contact .fb-contact__foot {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss);
}

/* ---------- 合作带 ---------- */
.page-contact .fb-coop {
  background: var(--pit);
  color: var(--paper);
  padding: clamp(24px, 3.4vw, 40px) 0;
  margin-top: clamp(26px, 3.6vw, 48px);
  border-top: 3px solid var(--signal);
}

.page-contact .fb-coop__inner {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
  align-items: start;
}

.page-contact .fb-coop h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.1;
  letter-spacing: -.3px;
  color: var(--paper);
  margin: 8px 0 0;
  max-width: 18ch;
}

.page-contact .fb-coop__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .fb-coop__list li {
  padding: 10px 0 10px 18px;
  border-top: 1px solid var(--line-dark-soft);
  position: relative;
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper-72);
}

.page-contact .fb-coop__list li:first-child {
  border-top: 0;
}

.page-contact .fb-coop__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 7px;
  height: 7px;
  background: var(--orange);
}

.page-contact .fb-coop__body > p {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--paper-60);
}

.page-contact .fb-coop__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-contact .fb-types__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-contact .fb-contact__item--wide {
    grid-column: span 2;
  }

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

  .page-contact .fb-check {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(20px, 3vw, 40px);
  }

  .page-contact .fb-check li:nth-child(1),
  .page-contact .fb-check li:nth-child(2) {
    border-top: 1px solid transparent;
  }
}

@media (min-width: 900px) {
  .page-contact .fb-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, .98fr);
  }

  .page-contact .fb-download__inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }

  .page-contact .fb-prepare__inner {
    grid-template-columns: minmax(0, .58fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .fb-prepare__inner .fb-sec-head {
    max-width: 34ch;
  }

  .page-contact .fb-prepare__note {
    grid-column: 2;
  }

  .page-contact .fb-coop__inner {
    grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr);
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .fb-type::before,
  .page-contact .fb-type,
  .page-contact .fb-flow__step::before,
  .page-contact .fb-check li::before {
    transition: none;
  }
}
<<<END>>>