.page-contact {
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb {
  padding: clamp(16px, 2.4vw, 26px) 0 0;
  font-size: 12px;
  letter-spacing: .06em;
}
.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--ink-soft);
}
.page-contact .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-contact .breadcrumb__list a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}
.page-contact .breadcrumb__list a:hover {
  border-bottom-color: var(--orange);
}
.page-contact .breadcrumb__list [aria-current="page"] {
  color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  padding: clamp(22px, 3.6vw, 48px) 0 clamp(34px, 5.4vw, 76px);
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .co-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}
.page-contact .co-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 62px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.02em;
  max-width: 14em;
}
.page-contact .co-hero__sub {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-contact .co-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 0;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}
.page-contact .co-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding-right: 16px;
  margin-right: 16px;
  border-right: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-soft);
}
.page-contact .co-hero__stats li:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: 0;
}
.page-contact .co-hero__stats b {
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
}
.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 首屏右侧联络面板 ---------- */
.page-contact .co-panel {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  background-color: var(--night);
  background-image:
    repeating-linear-gradient(90deg, transparent 0 31px, rgba(143, 191, 208, .13) 31px 32px),
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(143, 191, 208, .13) 31px 32px);
  border: 1px solid var(--line-dark);
  color: var(--cream);
}
.page-contact .co-panel__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ice);
}
.page-contact .co-panel__tagline {
  margin: 20px 0 0;
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--cream-soft);
}
.page-contact .co-panel__mail {
  margin: 6px 0 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(15px, 1.9vw, 20px);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.3;
  color: var(--fluo);
  word-break: break-all;
}
.page-contact .co-panel__steps {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
}
.page-contact .co-panel__steps li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--cream-soft);
}
.page-contact .co-panel__steps span {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--orange);
}
.page-contact .co-panel__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-dark);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--cream-soft);
}

/* ---------- 通用章节 ---------- */
.page-contact .co-sec {
  padding: clamp(44px, 6.4vw, 96px) 0;
}
.page-contact .co-sec--band {
  background: rgba(143, 191, 208, .18);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .co-sec--dark {
  background: var(--night);
  color: var(--cream);
  background-image:
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(143, 191, 208, .1) 47px 48px);
}
.page-contact .co-sec--dark h2,
.page-contact .co-sec--dark h3 {
  color: var(--cream);
}
.page-contact .co-head {
  max-width: 62ch;
}
.page-contact .co-head h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.7vw, 44px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
}
.page-contact .co-head__lead {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-contact .co-sec--dark .co-head__lead {
  color: var(--cream-soft);
}

/* ---------- 图片 ---------- */
.page-contact .co-figure {
  margin: 0 0 clamp(28px, 4vw, 48px);
}
.page-contact .co-figure--side {
  margin: 0;
}
.page-contact .co-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}
.page-contact .co-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--ink-soft);
}

/* ---------- 四类合作对象 ---------- */
.page-contact .co-types {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(26px, 3.6vw, 42px);
  border-top: 1px solid var(--line-soft);
  border-left: 1px solid var(--line-soft);
}
.page-contact .co-type {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  transition:
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.page-contact .co-type:hover,
.page-contact .co-type:focus-within {
  background: var(--ice-deep);
  color: var(--cream);
  transform: translateX(-4px);
}
.page-contact .co-type__num {
  display: block;
  font-family: var(--font-display);
  font-size: 38px;
  line-height: 1;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
  transition: color var(--dur) var(--ease);
}
.page-contact .co-type__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.3vw, 25px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.01em;
}
.page-contact .co-type__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
  transition: color var(--dur) var(--ease);
}
.page-contact .co-type__hint {
  display: inline-block;
  margin-top: 20px;
  font-size: 12.5px;
  letter-spacing: .06em;
  text-decoration: none;
  color: var(--orange);
  border-bottom: 1px solid currentColor;
  transition: color var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.page-contact .co-type:hover .co-type__num,
.page-contact .co-type:focus-within .co-type__num {
  color: var(--fluo);
}
.page-contact .co-type:hover .co-type__desc,
.page-contact .co-type:focus-within .co-type__desc {
  color: var(--cream-soft);
}
.page-contact .co-type:hover .co-type__hint,
.page-contact .co-type:focus-within .co-type__hint {
  color: var(--fluo);
}

/* ---------- 五步流程 ---------- */
.page-contact .co-flow {
  position: relative;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .co-flow__step {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 38px) clamp(36px, 5vw, 56px);
}
.page-contact .co-flow__step::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 20px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}
.page-contact .co-flow__step::after {
  content: "";
  position: absolute;
  left: 15px;
  top: 13px;
  width: clamp(14px, 3vw, 26px);
  height: 1px;
  background: var(--line);
}
.page-contact .co-flow__step:last-child {
  padding-bottom: 0;
}
.page-contact .co-flow__step:last-child::before {
  display: none;
}
.page-contact .co-flow__node {
  position: absolute;
  left: 0;
  top: 6px;
  width: 15px;
  height: 15px;
  background: var(--grass);
  transition: background-color var(--dur) var(--ease);
}
.page-contact .co-flow__num {
  margin: 0;
  font-family: var(--font-display);
  font-size: 11.5px;
  letter-spacing: .22em;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
}
.page-contact .co-flow__step h3 {
  margin: 6px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.1vw, 24px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
}
.page-contact .co-flow__role {
  margin: 0 0 6px;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-soft);
}
.page-contact .co-flow__role b {
  color: var(--ink);
  font-weight: 700;
}
.page-contact .co-flow__deliver {
  display: inline-block;
  margin: 10px 0 0;
  padding: 9px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink);
  background: rgba(36, 80, 95, .1);
  border-left: 3px solid var(--ice-deep);
  transition: background-color var(--dur) var(--ease);
}
.page-contact .co-flow__step:hover .co-flow__deliver {
  background: rgba(36, 80, 95, .18);
}
.page-contact .co-flow__step:hover .co-flow__node {
  background: var(--orange);
}

/* ---------- 资料清单 ---------- */
.page-contact .co-check__intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}
.page-contact .co-check__cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(30px, 4vw, 50px);
  border-top: 1px solid var(--line);
}
.page-contact .co-check__col {
  padding-top: clamp(22px, 3vw, 32px);
}
.page-contact .co-check__col + .co-check__col {
  border-top: 1px solid var(--line);
}
.page-contact .co-check__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 900;
  letter-spacing: -.01em;
}
.page-contact .co-check__hint {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--ink-soft);
}
.page-contact .co-check__list {
  display: grid;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.page-contact .co-check__list li {
  border-bottom: 1px solid var(--line-soft);
}
.page-contact .co-check__list label {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 11px 2px;
  cursor: pointer;
  font-size: 14.5px;
  line-height: 1.7;
  transition: color var(--dur) var(--ease);
}
.page-contact .co-check__list input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 5px 0 0;
  accent-color: var(--grass);
  cursor: pointer;
}
.page-contact .co-check__list input:checked + span {
  color: var(--ink-soft);
  text-decoration: line-through;
  text-decoration-color: var(--grass);
  text-decoration-thickness: 1px;
}

/* ---------- 三种接法 ---------- */
.page-contact .co-modes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line-dark);
}
.page-contact .co-mode {
  padding: clamp(20px, 2.8vw, 30px) 0;
  border-bottom: 1px solid var(--line-dark);
  transition: background-color var(--dur) var(--ease);
}
.page-contact .co-mode__tag {
  display: inline-block;
  margin: 0;
  padding: 4px 10px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--night);
  background: var(--ice);
}
.page-contact .co-mode h3 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 24px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.01em;
}
.page-contact .co-mode p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--cream-soft);
}
.page-contact .co-mode__fit {
  font-size: 12.5px !important;
  letter-spacing: .06em;
  color: var(--fluo) !important;
}
.page-contact .co-modes__foot {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-dark);
  font-size: 14px;
  line-height: 1.85;
  color: var(--cream-soft);
}
.page-contact .co-modes__foot a {
  color: var(--fluo);
  text-decoration: none;
  border-bottom: 1px solid rgba(233, 255, 92, .5);
  transition: border-color var(--dur) var(--ease);
}
.page-contact .co-modes__foot a:hover {
  border-bottom-color: var(--fluo);
}

/* ---------- 联络条 ---------- */
.page-contact .co-contact {
  padding: clamp(38px, 5.4vw, 80px) 0;
  background: var(--orange);
  color: var(--night);
}
.page-contact .co-contact__kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: rgba(23, 18, 16, .7);
}
.page-contact .co-contact__title {
  margin: 12px 0 0;
  max-width: 20em;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 42px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.02em;
}
.page-contact .co-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(24px, 3.6vw, 38px);
  align-items: start;
}
.page-contact .co-contact__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: rgba(23, 18, 16, .72);
}
.page-contact .co-contact__mail {
  display: inline-block;
  margin: 8px 0 0;
  padding-bottom: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: clamp(19px, 3.2vw, 36px);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.1;
  word-break: break-all;
  border-bottom: 2px solid var(--night);
}
.page-contact .co-contact__note {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(23, 18, 16, .82);
}
.page-contact .co-contact__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: rgba(23, 18, 16, .25);
}
.page-contact .co-contact__list > div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 14px;
  background: var(--orange);
  font-size: 14px;
  line-height: 1.65;
}
.page-contact .co-contact__list dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(23, 18, 16, .66);
}
.page-contact .co-contact__list dd {
  margin: 0;
  font-weight: 500;
}

/* ---------- 常见疑问 ---------- */
.page-contact .co-faq {
  margin-top: clamp(24px, 3.4vw, 40px);
  border-top: 1px solid var(--line);
}
.page-contact .co-faq details {
  border-bottom: 1px solid var(--line);
}
.page-contact .co-faq summary {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 16px 2px;
  cursor: pointer;
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  line-height: 1.6;
  list-style: none;
  transition: color var(--dur) var(--ease);
}
.page-contact .co-faq summary::-webkit-details-marker {
  display: none;
}
.page-contact .co-faq summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-display);
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
}
.page-contact .co-faq details[open] summary::after {
  content: "−";
}
.page-contact .co-faq summary:hover {
  color: var(--orange);
}
.page-contact .co-faq details > p {
  margin: 0 0 18px;
  max-width: 42em;
  padding-left: 2px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 结尾出口 ---------- */
.page-contact .co-out {
  padding: 0 0 clamp(48px, 6.4vw, 88px);
}
.page-contact .co-out__box {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(143, 191, 208, .16), rgba(143, 191, 208, 0));
}
.page-contact .co-out__text {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-contact .co-out__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-contact .co-types {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .co-check__list label {
    font-size: 15px;
  }
}

@media (min-width: 780px) {
  .page-contact .co-check__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-contact .co-check__col + .co-check__col {
    border-top: 0;
    border-left: 1px solid var(--line);
    padding-left: clamp(24px, 3.4vw, 48px);
  }
}

@media (min-width: 860px) {
  .page-contact .co-modes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--line-dark);
  }
  .page-contact .co-mode {
    padding: clamp(20px, 2.6vw, 30px) clamp(18px, 2.4vw, 28px);
    border-bottom: 0;
    border-right: 1px solid var(--line-dark);
  }
  .page-contact .co-mode:first-child {
    padding-left: 0;
  }
  .page-contact .co-mode:last-child {
    padding-right: 0;
    border-right: 0;
  }
  .page-contact .co-mode:hover {
    background: rgba(143, 191, 208, .08);
  }
}

@media (min-width: 900px) {
  .page-contact .co-check__intro {
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
  }
  .page-contact .co-contact__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }
}

@media (min-width: 960px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
  .page-contact .co-out__box {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-type,
  .page-contact .co-type__num,
  .page-contact .co-type__desc,
  .page-contact .co-type__hint,
  .page-contact .co-flow__node,
  .page-contact .co-flow__deliver,
  .page-contact .co-faq summary {
    transition-duration: 0ms;
  }
}