.page-contact {
  --co-hair: rgba(27, 25, 23, .16);
  --co-gold-hair: rgba(200, 150, 62, .42);
  padding-bottom: 5rem;
}

.page-contact [id] {
  scroll-margin-top: 5.5rem;
}

.page-contact .breadcrumbs {
  padding: 1.75rem 0 2rem;
}

/* ---------- 首屏 ---------- */
.co-hero {
  display: grid;
  gap: 2.25rem;
  padding-bottom: 3rem;
}

.co-hero__title {
  margin: .7rem 0 1.1rem;
  max-width: 17ch;
}

.co-hero__lead {
  max-width: 34em;
}

.co-hero .btn-row {
  margin-top: 1.75rem;
}

.co-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--co-hair);
  border: 1px solid var(--co-hair);
  align-self: start;
}

.co-fact {
  background: var(--rice);
  padding: 1.1rem 1rem 1.2rem;
}

.co-fact__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--fs-28);
  line-height: 1;
  color: var(--gold-deep);
}

.co-fact__num small {
  font-size: var(--fs-12);
  margin-left: .3rem;
  color: var(--gray);
  letter-spacing: 0;
}

.co-fact__label {
  display: block;
  margin-top: .55rem;
  font-size: var(--fs-12);
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 区块骨架 ---------- */
.page-contact .co-block {
  padding: 3rem 0;
  border-top: 1px solid var(--co-hair);
}

.co-block__head {
  max-width: 46rem;
  margin-bottom: 2rem;
}

.co-block__head .lead {
  margin: .9rem 0 0;
}

/* ---------- 四阶段 ---------- */
.co-stagebox {
  margin-bottom: 2.5rem;
}

.co-stages__track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(10.5rem, 1fr);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  padding-bottom: .75rem;
  scroll-snap-type: x proximity;
}

.co-stages__track::-webkit-scrollbar {
  height: 4px;
}

.co-stages__track::-webkit-scrollbar-thumb {
  background: var(--champagne);
}

.stage-node {
  position: relative;
  appearance: none;
  background: transparent;
  border: 0;
  font: inherit;
  color: var(--ink);
  text-align: left;
  padding: 2.7rem 1.25rem 0 0;
  cursor: pointer;
  scroll-snap-align: start;
}

.stage-node::before {
  content: "";
  position: absolute;
  top: 1.16rem;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--red-deep);
  opacity: .2;
}

.stage-node::after {
  content: "";
  position: absolute;
  top: .63rem;
  left: 0;
  width: .95rem;
  height: .95rem;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--red-deep);
  transition: background .3s ease, box-shadow .3s ease;
}

.stage-node[aria-selected="true"]::after,
.stage-node.is-active::after {
  background: var(--red);
  box-shadow: 0 0 0 5px rgba(184, 50, 44, .14);
}

.stage-node__idx {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--gold-deep);
}

.stage-node__name {
  display: block;
  margin-top: .2rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
  transition: color .3s ease;
}

.stage-node[aria-selected="true"] .stage-node__name,
.stage-node.is-active .stage-node__name {
  color: var(--red);
}

.stage-node__meta {
  display: block;
  margin-top: .35rem;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--gray);
}

.stage-panel {
  margin-top: 1.5rem;
  padding: 1.6rem 1.35rem;
  background: var(--rice);
  border: 1px solid var(--co-hair);
  box-shadow: var(--shadow-print);
}

.stage-panel__title {
  margin: 0 0 .9rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.stage-panel ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .6rem;
}

.stage-panel li {
  position: relative;
  padding-left: 1.1rem;
  font-size: var(--fs-14);
  line-height: 1.75;
}

.stage-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: .42rem;
  height: .42rem;
  background: var(--gold);
}

.stage-panel__foot {
  margin: 1.1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--co-gold-hair);
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 场景图 ---------- */
.co-scene {
  margin: 0;
}

.co-scene .media {
  border: 1px solid var(--co-hair);
  overflow: hidden;
}

.co-scene .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 六项标准 ---------- */
.co-std-grid {
  display: grid;
  gap: 1.25rem;
}

.co-std {
  position: relative;
  padding: 1.25rem 1.15rem 1.3rem 1.25rem;
  background: var(--paper);
  border: 1px solid var(--co-hair);
  border-left: 3px solid var(--gold);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}

.co-std:hover,
.co-std:focus-within {
  transform: translateY(-2px);
  border-color: var(--gold-deep);
  box-shadow: 4px 4px 0 var(--champagne);
}

.co-std__num {
  margin: 0;
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gold-deep);
}

.co-std__name {
  margin: .35rem 0 .55rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.co-std__desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--ink);
}

.co-std__tip {
  margin: .9rem 0 0;
  padding: .6rem .7rem;
  background: rgba(235, 211, 160, .42);
  border-left: 2px solid var(--gold);
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--ink);
  overflow: hidden;
  max-height: 14rem;
  transition: max-height .4s ease, opacity .3s ease, margin-top .4s ease, padding .4s ease;
}

/* ---------- 福建样板 ---------- */
.co-fujian {
  display: flex;
  gap: 1.25rem;
  padding: 1.6rem 1.35rem;
  border: 1px solid var(--gold);
  background: linear-gradient(180deg, rgba(235, 211, 160, .38), rgba(251, 246, 236, 0));
}

.co-fujian__tag {
  flex: 0 0 auto;
  align-self: stretch;
}

.co-fujian__body {
  min-width: 0;
}

.co-fujian__title {
  margin: 0 0 .85rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
  line-height: 1.5;
}

.co-fujian__body p {
  margin: 0;
  max-width: 34em;
  font-size: var(--fs-14);
  line-height: 1.8;
}

.co-fujian__list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.co-fujian__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: var(--fs-14);
  line-height: 1.75;
}

.co-fujian__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .65em;
  width: .42rem;
  height: .42rem;
  background: var(--red);
}

.co-fujian__foot {
  margin-top: 1rem !important;
  padding-top: .85rem;
  border-top: 1px solid var(--co-gold-hair);
  color: var(--gray);
}

/* ---------- 伙伴支持 ---------- */
.co-support__grid {
  display: grid;
  gap: 1.5rem;
}

.co-support__item {
  border-top: 2px solid var(--red);
  padding-top: 1.05rem;
}

.co-support__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .12em;
  color: var(--gray);
}

.co-support__t {
  margin: .4rem 0 .6rem;
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.co-support__d {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
}

/* ---------- 洽谈方式 ---------- */
.co-contact__grid {
  display: grid;
  gap: 1.75rem;
}

.co-contact__figure {
  margin: 0;
}

.co-contact__figure .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.co-banner {
  background: var(--red-deep);
  color: var(--paper);
  padding: 1.75rem 1.4rem;
  box-shadow: var(--shadow-print);
}

.co-banner__eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--champagne);
}

.co-banner__list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: .95rem;
}

.co-banner__k {
  display: block;
  font-size: var(--fs-12);
  letter-spacing: .08em;
  color: var(--champagne);
}

.co-banner__v {
  display: block;
  margin-top: .22rem;
  font-size: var(--fs-16);
  line-height: 1.6;
  word-break: break-word;
}

.co-banner__note {
  margin: 1.4rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(251, 246, 236, .28);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: rgba(251, 246, 236, .88);
}

/* ---------- 问答 ---------- */
.page-contact .acc__item {
  border-bottom: 1px solid var(--co-hair);
}

/* ---------- 延伸阅读 ---------- */
.co-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--co-hair);
  border: 1px solid var(--co-hair);
}

.co-next__item {
  background: var(--paper);
}

.co-next__link {
  display: grid;
  gap: .35rem;
  padding: 1.2rem 1.25rem;
  text-decoration: none;
  color: var(--ink);
  transition: background .3s ease;
}

.co-next__link:hover,
.co-next__link:focus-visible {
  background: var(--rice);
}

.co-next__k {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--gold-deep);
}

.co-next__t {
  font-family: var(--font-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.co-next__d {
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--gray);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 880px) {
  .co-hero {
    grid-template-columns: 7fr 5fr;
    gap: 3rem;
    padding-bottom: 4rem;
  }

  .page-contact .co-block {
    padding: 4rem 0;
  }

  .co-block__head {
    margin-bottom: 2.5rem;
  }

  .co-std-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
  }

  .co-support__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem 2.5rem;
  }

  .co-contact__grid {
    grid-template-columns: 5fr 7fr;
    gap: 2.5rem;
    align-items: stretch;
  }

  .co-contact__figure {
    display: flex;
  }

  .co-contact__figure .media__img {
    height: 100%;
  }

  .co-next__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .co-std__tip {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    padding-top: 0;
    padding-bottom: 0;
  }

  .co-std:hover .co-std__tip,
  .co-std:focus-within .co-std__tip {
    max-height: 14rem;
    opacity: 1;
    margin-top: .9rem;
    padding-top: .6rem;
    padding-bottom: .6rem;
  }
}

@media (min-width: 1120px) {
  .co-hero {
    grid-template-columns: 8fr 4fr;
  }
}
<<<END>>>