.page-contact {
  --co-gutter: clamp(20px, 4vw, 56px);
  --co-maxw: 1100px;
  --co-space: clamp(56px, 7vw, 96px);
  --co-body: rgba(15, 26, 36, 0.74);
  background: var(--mist);
  color: var(--ink);
  overflow-x: hidden;
}

.page-contact h1,
.page-contact h2,
.page-contact h3,
.page-contact p,
.page-contact ul,
.page-contact ol,
.page-contact figure {
  margin: 0;
}

.page-contact ul,
.page-contact ol {
  list-style: none;
  padding: 0;
}

.page-contact .mono-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--deep-3);
  border-left: 2px solid var(--cyan);
  padding-left: 8px;
}

/* ---------- 按钮 ---------- */
.page-contact .co-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-contact .co-btn--primary {
  background: var(--orange);
  color: var(--deep-1);
}

.page-contact .co-btn--primary:hover {
  background: #ff9163;
}

.page-contact .co-btn--ghost {
  border-color: rgba(159, 179, 200, 0.5);
  color: var(--mist);
}

.page-contact .co-btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-contact .co-btn--dark-on-light {
  border-color: var(--deep-3);
  color: var(--deep-1);
}

.page-contact .co-btn--dark-on-light:hover {
  border-color: var(--deep-1);
  background: var(--deep-1);
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  overflow: hidden;
  padding: 20px var(--co-gutter) clamp(48px, 6vw, 88px);
  background: linear-gradient(158deg, var(--deep-1) 0%, var(--deep-2) 58%, var(--deep-1) 100%);
  color: var(--mist);
}

.page-contact .co-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, var(--line-soft) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.page-contact .co-hero > * {
  position: relative;
  z-index: 1;
}

.page-contact .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  max-width: var(--co-maxw);
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
}

.page-contact .breadcrumbs__item {
  color: inherit;
  text-decoration: none;
}

.page-contact .breadcrumbs__item[href]:hover {
  color: var(--cyan);
}

.page-contact .breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--deep-3);
}

.page-contact .co-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  max-width: var(--co-maxw);
  margin: 0 auto;
  padding-top: clamp(32px, 5vw, 64px);
}

.page-contact .co-hero__lead {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-contact .co-hero__lead .mono-label {
  color: var(--cyan);
}

.page-contact .co-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 46px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: #fff;
}

.page-contact .co-hero__intro {
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

/* 首屏拼贴 */
.page-contact .co-collage {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
  align-content: start;
}

.page-contact .co-tile {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(20, 48, 76, 0.55);
}

.page-contact .co-tile--visual {
  padding: 0;
  overflow: hidden;
}

.page-contact .co-tile--visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-contact .co-tile__cap {
  padding: 11px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.65;
  color: var(--steel);
}

.page-contact .co-tile--stat {
  display: grid;
  gap: 6px;
  align-content: center;
  padding: 18px;
  border-color: rgba(0, 229, 208, 0.3);
  background: rgba(0, 229, 208, 0.06);
}

.page-contact .co-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-contact .co-stat__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 5vw, 44px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-contact .co-stat__label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--steel);
}

.page-contact .co-tile__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--steel);
}

.page-contact .co-tile--tags {
  padding: 18px;
}

.page-contact .co-tile__title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
  margin-bottom: 12px;
}

.page-contact .co-taglist {
  display: grid;
  gap: 9px;
}

.page-contact .co-taglist li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  color: var(--mist);
}

.page-contact .co-dot {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  flex: none;
}

.page-contact .co-dot--a { background: var(--tag-phone); }
.page-contact .co-dot--b { background: var(--tag-tablet); }
.page-contact .co-dot--c { background: var(--tag-desktop); }
.page-contact .co-dot--d { background: var(--tag-accessory); }

/* ---------- 通用区块 ---------- */
.page-contact .co-section {
  padding: var(--co-space) var(--co-gutter);
}

.page-contact .co-section__inner {
  max-width: var(--co-maxw);
  margin: 0 auto;
}

.page-contact .co-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.page-contact .co-head__top {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
}

.page-contact .co-head__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--deep-3);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 2px 7px;
}

.page-contact .co-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.2vw, 33px);
  line-height: 1.24;
  letter-spacing: -0.015em;
}

.page-contact .co-head p {
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--co-body);
}

/* ---------- 合作场景 ---------- */
.page-contact .co-scenes {
  background: var(--mist);
}

.page-contact .co-scenes__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .co-scene {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
  box-shadow: var(--shadow-1);
}

.page-contact .co-scene h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.page-contact .co-scene__row {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--co-body);
}

.page-contact .co-scene__row b {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--deep-3);
  padding-top: 4px;
}

/* ---------- 部署流程 ---------- */
.page-contact .co-flow {
  background-color: var(--deep-1);
  background-image: repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 24px);
  color: var(--mist);
  padding: var(--co-space) var(--co-gutter);
}

.page-contact .co-flow__inner {
  max-width: var(--co-maxw);
  margin: 0 auto;
}

.page-contact .co-head--dark h2 {
  color: #fff;
}

.page-contact .co-head--dark p {
  color: var(--steel);
}

.page-contact .co-head__no--dark {
  color: var(--cyan);
  border-color: rgba(0, 229, 208, 0.4);
}

.page-contact .co-steps {
  display: grid;
  gap: 22px;
  grid-template-columns: 1fr;
}

.page-contact .co-step {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}

.page-contact .co-step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  margin-bottom: 12px;
}

.page-contact .co-step h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 8px;
  color: #fff;
}

.page-contact .co-step p {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--steel);
}

.page-contact .co-flow__figure {
  margin-top: clamp(32px, 4vw, 48px);
}

.page-contact .co-flow__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 2px;
  object-fit: cover;
}

.page-contact .co-flow__figure figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 联系方式 ---------- */
.page-contact .co-contact {
  background: var(--mist);
}

.page-contact .co-contact__grid {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  grid-template-columns: 1fr;
}

.page-contact .co-info {
  border-top: 1px solid var(--line);
}

.page-contact .co-info li {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .co-info__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--deep-3);
}

.page-contact .co-info__v {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.1vw, 20px);
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
  word-break: break-word;
}

.page-contact .co-info__v--addr {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
}

.page-contact .co-contact__aside {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 20px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
  border-radius: 2px;
  background: var(--card);
}

.page-contact .co-contact__tip {
  font-size: 14px;
  line-height: 1.75;
  color: var(--co-body);
}

.page-contact .co-contact__aside .co-btn {
  justify-self: start;
}

/* ---------- 通道对照 ---------- */
.page-contact .co-bridge {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-contact .co-bridge__grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr;
}

.page-contact .co-bridge__panel {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: 22px;
  border-radius: 2px;
}

.page-contact .co-bridge__panel h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
}

.page-contact .co-bridge__panel--here {
  background: var(--deep-1);
  color: var(--mist);
}

.page-contact .co-bridge__panel--here h3 {
  color: #fff;
}

.page-contact .co-bridge__panel--help {
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--ink);
}

.page-contact .co-bridge__list {
  display: grid;
  gap: 9px;
}

.page-contact .co-bridge__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
}

.page-contact .co-bridge__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-contact .co-bridge__panel--help .co-bridge__list li::before {
  background: var(--deep-3);
}

.page-contact .co-bridge__panel--here .co-bridge__list li {
  color: var(--steel);
}

.page-contact .co-bridge__panel--help .co-bridge__list li {
  color: var(--co-body);
}

.page-contact .co-bridge__meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--deep-3);
}

.page-contact .co-bridge__panel .co-btn {
  justify-self: start;
  margin-top: 4px;
}

.page-contact .co-bridge__also {
  margin-top: 22px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--co-body);
}

.page-contact .co-bridge__also a {
  color: var(--deep-2);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 208, 0.85);
  padding-bottom: 1px;
}

.page-contact .co-bridge__also a:hover {
  color: var(--deep-1);
  background: rgba(0, 229, 208, 0.18);
}

/* ---------- 问答 ---------- */
.page-contact .co-qa {
  background: var(--mist);
}

.page-contact .co-qa__list {
  border-top: 1px solid var(--line);
}

.page-contact .co-qa__item {
  border-bottom: 1px solid var(--line);
}

.page-contact .co-qa__item summary {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-contact .co-qa__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--deep-3);
  transition: color 0.2s var(--ease);
}

.page-contact .co-qa__item[open] summary::after {
  content: "\2212";
  color: var(--orange);
}

.page-contact .co-qa__item summary:hover::after {
  color: var(--deep-1);
}

.page-contact .co-qa__a {
  padding: 0 0 20px;
}

.page-contact .co-qa__a p {
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--co-body);
}

/* ---------- 结尾号召 ---------- */
.page-contact .co-cta {
  padding: var(--co-space) var(--co-gutter);
  background: linear-gradient(140deg, var(--deep-1) 0%, var(--deep-3) 100%);
  color: var(--mist);
}

.page-contact .co-cta__inner {
  display: grid;
  gap: 14px;
  max-width: var(--co-maxw);
  margin: 0 auto;
  justify-items: start;
}

.page-contact .co-cta .mono-label {
  color: var(--cyan);
}

.page-contact .co-cta h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.015em;
  color: #fff;
}

.page-contact .co-cta p {
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel);
}

.page-contact .co-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-contact .co-info li {
    grid-template-columns: 88px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }

  .page-contact .co-collage {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-contact .co-tile--visual {
    grid-column: 1 / -1;
  }
}

@media (min-width: 760px) {
  .page-contact .co-scenes__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .co-scene--a { grid-column: span 2; }
  .page-contact .co-scene--b { grid-column: span 1; }
  .page-contact .co-scene--c { grid-column: span 1; }
  .page-contact .co-scene--d { grid-column: span 2; }

  .page-contact .co-bridge__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 20px;
  }

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

  .page-contact .co-step {
    padding: 0 20px;
    border-left: 1px solid var(--line);
  }

  .page-contact .co-step:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .page-contact .co-step:last-child {
    padding-right: 0;
  }

  .page-contact .co-flow__figure img {
    aspect-ratio: 12 / 7;
  }
}

@media (min-width: 980px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(36px, 5vw, 68px);
    align-items: center;
  }

  .page-contact .co-collage {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    grid-template-rows: auto 1fr;
    gap: 16px;
  }

  .page-contact .co-tile--visual {
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: stretch;
  }

  .page-contact .co-tile--visual img {
    height: 100%;
    aspect-ratio: auto;
    min-height: 220px;
  }

  .page-contact .co-tile--stat {
    grid-column: 2;
    grid-row: 1;
  }

  .page-contact .co-tile--tags {
    grid-column: 2;
    grid-row: 2;
  }

  .page-contact .co-contact__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-contact .co-qa__item summary {
    font-size: 17px;
    padding: 22px 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-btn,
  .page-contact .co-qa__item summary::after {
    transition: none;
  }
}
<<<END>>>