.page-contact {
  --co-hair: rgba(154, 169, 163, .26);
  --co-hair-soft: rgba(154, 169, 163, .14);
  --co-pad-y: clamp(52px, 8vw, 100px);
  background: var(--green);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  padding: clamp(18px, 3vw, 28px) 0 var(--co-pad-y);
  background:
    radial-gradient(120% 92% at 84% 6%, rgba(14, 32, 56, .95) 0%, rgba(11, 43, 38, 0) 64%),
    linear-gradient(180deg, #0B2B26 0%, #0A241F 100%);
  overflow: hidden;
}

.page-contact .co-hero .crumbs {
  color: var(--mist);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-contact .co-hero .crumbs a {
  color: rgba(244, 239, 227, .78);
  text-decoration: none;
}

.page-contact .co-hero .crumbs a:hover {
  color: var(--lime);
}

.page-contact .co-scale {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  margin-top: 16px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--co-hair-soft);
}

.page-contact .co-scale span {
  display: block;
  width: 1px;
  height: 6px;
  background: var(--co-hair);
}

.page-contact .co-scale span:nth-child(5n+1) {
  height: 11px;
  background: rgba(184, 255, 61, .55);
}

.page-contact .co-hero__grid {
  display: grid;
  gap: clamp(26px, 5vw, 48px);
  margin-top: clamp(24px, 4vw, 44px);
  align-items: end;
}

.page-contact .co-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-contact .co-kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--lime);
}

.page-contact .co-h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.4vw, 84px);
  line-height: .98;
  letter-spacing: -.015em;
  color: var(--paper);
}

.page-contact .co-h1 em {
  font-style: normal;
  color: var(--lime);
}

.page-contact .co-lede {
  max-width: 54ch;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: rgba(244, 239, 227, .82);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.page-contact .co-hero__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--co-hair-soft);
}

.page-contact .co-hero__meta li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--co-hair-soft);
}

.page-contact .co-hero__meta-k {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-contact .co-hero__meta-v {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--paper);
  text-align: right;
}

.page-contact .co-hero__fig {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--co-hair);
  background: rgba(14, 32, 56, .6);
}

.page-contact .co-hero__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(.92) contrast(1.02);
}

.page-contact .co-hero__fig figcaption {
  padding: 10px 2px 2px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 通用章节头 ---------- */
.page-contact .co-head {
  max-width: 660px;
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-contact .co-num {
  display: block;
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .2em;
  color: var(--orange);
}

.page-contact .co-h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4.6vw, 46px);
  line-height: 1.06;
  letter-spacing: -.01em;
}

.page-contact .co-h2--sm {
  font-size: clamp(22px, 3.4vw, 30px);
  margin-bottom: 16px;
}

.page-contact .co-sub {
  margin: 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.82;
  color: rgba(244, 239, 227, .78);
}

/* ---------- 四条通道 ---------- */
.page-contact .co-lanes {
  padding: var(--co-pad-y) 0;
  background: linear-gradient(180deg, #0E2038 0%, #0B1A2C 100%);
  color: var(--paper);
}

.page-contact .co-lanes__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-contact .co-lane {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: 20px 18px 22px;
  border: 1px solid var(--co-hair);
  background: rgba(244, 239, 227, .045);
  transition: transform .35s var(--ease), border-color .35s var(--ease), background .35s var(--ease);
}

.page-contact .co-lane:hover {
  transform: translateY(-3px);
  border-color: var(--hair-lime);
  background: rgba(244, 239, 227, .075);
}

.page-contact .co-lane__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-contact .co-lane__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-contact .co-lane h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 22px);
  letter-spacing: .01em;
  color: var(--paper);
}

.page-contact .co-lane p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(244, 239, 227, .78);
}

.page-contact .co-lane__list {
  list-style: none;
  margin: 0;
  padding: 12px 0 0;
  border-top: 1px solid var(--co-hair-soft);
  display: grid;
  gap: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .co-lane__list li::before {
  content: "—";
  margin-right: 6px;
  color: var(--lime);
}

.page-contact .co-lane__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}

.page-contact .co-lane__link:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 流程 ---------- */
.page-contact .co-flow {
  padding: var(--co-pad-y) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-contact .co-flow .co-num {
  color: var(--wine);
}

.page-contact .co-flow .co-h2 {
  color: var(--ink);
}

.page-contact .co-flow .co-sub {
  color: rgba(6, 21, 18, .74);
}

.page-contact .co-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .co-step {
  position: relative;
  margin-left: 13px;
  padding: 0 0 26px 34px;
  border-left: 1px solid rgba(6, 21, 18, .2);
}

.page-contact .co-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-contact .co-step__no {
  position: absolute;
  left: -14px;
  top: -3px;
  display: grid;
  place-items: center;
  width: 27px;
  height: 27px;
  background: var(--green);
  border: 1px solid var(--green);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

.page-contact .co-step h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .co-step p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(6, 21, 18, .76);
}

/* ---------- 材料清单 ---------- */
.page-contact .co-materials {
  padding: var(--co-pad-y) 0;
  background: var(--night);
  color: var(--paper);
}

.page-contact .co-mat__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .co-mat__fig {
  margin: 0;
  padding: 8px;
  border: 1px solid var(--co-hair);
  background: rgba(6, 21, 18, .42);
}

.page-contact .co-mat__fig img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-contact .co-mat__fig figcaption {
  padding: 10px 2px 2px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .co-check {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .co-check li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.6;
  color: rgba(244, 239, 227, .88);
}

.page-contact .co-check li::before {
  content: "";
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border: 1px solid var(--lime);
  background: linear-gradient(135deg, rgba(184, 255, 61, .22), rgba(184, 255, 61, .04));
}

.page-contact .co-fold {
  border-top: 1px solid var(--co-hair-soft);
}

.page-contact .co-fold:last-of-type {
  border-bottom: 1px solid var(--co-hair-soft);
}

.page-contact .co-fold summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 30px 15px 0;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--paper);
}

.page-contact .co-fold summary::-webkit-details-marker {
  display: none;
}

.page-contact .co-fold summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--lime);
}

.page-contact .co-fold[open] summary::after {
  content: "–";
}

.page-contact .co-fold__body {
  padding: 0 0 16px;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(244, 239, 227, .76);
}

/* ---------- 联系方式 ---------- */
.page-contact .co-contact {
  padding: var(--co-pad-y) 0;
  background: var(--paper);
  color: var(--ink);
}

.page-contact .co-contact .co-num {
  color: var(--wine);
}

.page-contact .co-contact .co-h2 {
  color: var(--ink);
}

.page-contact .co-contact .co-sub {
  color: rgba(6, 21, 18, .74);
}

.page-contact .co-contact__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-contact .co-line {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-top: 1px solid rgba(6, 21, 18, .16);
}

.page-contact .co-line:last-of-type {
  border-bottom: 1px solid rgba(6, 21, 18, .16);
}

.page-contact .co-line__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--wine);
}

.page-contact .co-line__v {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(17px, 3.6vw, 26px);
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-contact .co-line__v a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 43, 38, .35);
}

.page-contact .co-line__v a:hover {
  border-bottom-color: var(--lime);
}

.page-contact .co-copy {
  justify-self: start;
  appearance: none;
  padding: 7px 13px;
  border: 1px solid rgba(6, 21, 18, .34);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  cursor: pointer;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease);
}

.page-contact .co-copy:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.page-contact .co-copy:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.page-contact .co-copy-status {
  min-height: 1.2em;
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--wine);
}

.page-contact .co-note {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(6, 21, 18, .7);
}

.page-contact .co-aside {
  padding: 22px 20px;
  border: 1px solid rgba(6, 21, 18, .16);
  background: rgba(11, 43, 38, .045);
}

.page-contact .co-aside__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--ink);
}

.page-contact .co-aside__list {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .co-aside__list li {
  display: grid;
  gap: 4px;
  padding-left: 12px;
  border-left: 2px solid var(--lime);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(6, 21, 18, .7);
}

.page-contact .co-aside__list a {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(11, 43, 38, .3);
  justify-self: start;
}

.page-contact .co-aside__list a:hover {
  border-bottom-color: var(--orange);
  color: var(--wine);
}

.page-contact .co-aside__foot {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(6, 21, 18, .14);
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(6, 21, 18, .62);
}

/* ---------- 郑州服务通道 ---------- */
.page-contact .co-service {
  padding: clamp(40px, 6vw, 76px) 0;
  background: var(--ink);
  color: var(--paper);
}

.page-contact .co-service__grid {
  display: grid;
  gap: 24px;
}

.page-contact .co-tagline {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--mist);
}

.page-contact .co-service .co-h2 {
  color: var(--paper);
}

.page-contact .co-service__addr {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 2.6vw, 22px);
  line-height: 1.5;
  color: var(--lime);
}

.page-contact .co-service__note {
  margin: 0 0 16px;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(244, 239, 227, .74);
}

.page-contact .co-icp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-contact .co-service__side {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--co-hair-soft);
}

.page-contact .co-back {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--co-hair);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--lime);
  text-decoration: none;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-contact .co-back:hover {
  border-color: var(--lime);
  background: rgba(184, 255, 61, .1);
}

.page-contact .co-service__meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--mist);
}

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

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

  .page-contact .co-hero__meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 26px;
    border-top: 0;
  }

  .page-contact .co-hero__meta li {
    border-top: 1px solid var(--co-hair-soft);
  }

  .page-contact .co-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .co-step {
    margin-left: 0;
    padding: 30px 16px 0 0;
    border-left: 0;
    border-top: 1px solid rgba(6, 21, 18, .22);
  }

  .page-contact .co-step:last-child {
    border-top-color: rgba(6, 21, 18, .22);
  }

  .page-contact .co-step__no {
    left: 0;
    top: -14px;
  }

  .page-contact .co-mat__grid {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-contact .co-contact__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }

  .page-contact .co-service__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-contact .co-service__side {
    padding-top: 0;
    border-top: 0;
    justify-content: flex-end;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-lane,
  .page-contact .co-copy,
  .page-contact .co-back {
    transition: none;
  }

  .page-contact .co-lane:hover {
    transform: none;
  }
}