.page-contact {
  --co-pad: clamp(56px, 8vw, 112px);
  --co-line: rgba(216, 166, 58, 0.28);
  --co-line-soft: rgba(143, 163, 155, 0.24);
  background: var(--paper);
  color: var(--text);
  overflow-x: hidden;
}

.page-contact .co-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 214, 196, 0.45);
  padding-bottom: 1px;
  font-weight: 600;
}

.page-contact .co-types__foot a,
.page-contact .co-contact__lead a {
  color: var(--ink-3);
  text-decoration: underline;
  text-decoration-color: var(--gold);
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */
.page-contact .co-hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: calc(var(--co-pad) * 0.7) 0 var(--co-pad);
  overflow: hidden;
}

.page-contact .co-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-contact .co-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.4;
}

.page-contact .co-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 43, 36, 0.94) 0%, rgba(11, 43, 36, 0.78) 52%, var(--ink) 100%);
}

.page-contact .co-hero__inner {
  position: relative;
  z-index: 1;
}

.page-contact .co-hero .breadcrumbs {
  color: var(--ink-soft);
  margin-bottom: clamp(28px, 5vw, 56px);
  font-size: 13px;
}

.page-contact .co-hero .breadcrumbs a {
  color: var(--gold);
  text-decoration: none;
}

.page-contact .co-hero__grid {
  display: grid;
  gap: clamp(32px, 5vw, 56px);
}

.page-contact .co-hero__lead h1 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 14px 0 20px;
  max-width: 15em;
  color: var(--paper);
}

.page-contact .co-hero__desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 40em;
  margin: 0 0 clamp(24px, 4vw, 36px);
}

.page-contact .co-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-contact .co-card {
  position: relative;
  background: var(--ink-2);
  border: 1px solid var(--line-gold-strong);
  padding: clamp(22px, 3vw, 34px);
}

.page-contact .co-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: var(--gold-hi);
}

.page-contact .co-card__label {
  margin: 6px 0 18px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-contact .copy-mail {
  display: block;
  cursor: pointer;
}

.page-contact .copy-mail__label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey);
  margin-bottom: 4px;
}

.page-contact .copy-mail__value {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(19px, 3.2vw, 27px);
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--gold-hi);
  word-break: break-all;
}

.page-contact .copy-mail__hint {
  display: block;
  font-size: 12px;
  line-height: 1.5;
  color: var(--grey);
  margin-top: 4px;
}

.page-contact .co-card__mail {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line-grey);
}

.page-contact .co-card__list {
  margin: 18px 0 0;
  display: grid;
  gap: 14px;
}

.page-contact .co-card__list dt {
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-contact .co-card__list dd {
  margin: 3px 0 0;
  font-family: var(--font-num);
  font-size: clamp(18px, 2.6vw, 22px);
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-contact .co-card__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-grey);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 区块标题 ---------- */
.page-contact .co-head {
  max-width: 780px;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-contact .co-head h2 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(25px, 4vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 12px 0 14px;
  color: var(--text);
}

.page-contact .co-head__sub {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: #3f4f49;
  max-width: 58ch;
}

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

.page-contact .co-head--dark .co-head__sub {
  color: var(--ink-soft);
}

.page-contact .co-head--dark .eyebrow {
  color: var(--gold-hi);
}

/* ---------- 合作类型 ---------- */
.page-contact .co-types {
  background: var(--paper);
  padding: var(--co-pad) 0;
}

.page-contact .co-types__row {
  display: grid;
  border-top: 1px solid var(--co-line);
  align-items: stretch;
}

.page-contact .co-type {
  background: var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--co-line);
  transition: background 0.25s var(--ease);
}

.page-contact .co-type:hover {
  background: var(--ink-3);
}

.page-contact .co-type[open] {
  background: var(--ink-2);
}

.page-contact .co-type__sum {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: grid;
  gap: 8px;
  padding: clamp(20px, 3vw, 30px);
  padding-right: clamp(44px, 5vw, 56px);
}

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

.page-contact .co-type__sum::after {
  content: "+";
  position: absolute;
  top: clamp(18px, 2.6vw, 26px);
  right: clamp(18px, 2.6vw, 28px);
  font-family: var(--font-num);
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
}

.page-contact .co-type[open] .co-type__sum::after {
  content: "–";
  color: var(--gold-hi);
}

.page-contact .co-type__idx {
  font-family: var(--font-num);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold);
}

.page-contact .co-type__name {
  display: block;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--paper);
}

.page-contact .co-type__who {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-contact .co-type__body {
  padding: 0 clamp(20px, 3vw, 30px) clamp(22px, 3vw, 32px);
}

.page-contact .co-type__body p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
  max-width: 42ch;
}

.page-contact .co-type__body p.co-type__k {
  margin-bottom: 3px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-hi);
}

.page-contact .co-types__foot {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #3f4f49;
  max-width: 66ch;
}

/* ---------- 对接流程 ---------- */
.page-contact .co-flow {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: var(--co-pad) 0;
  overflow: hidden;
}

.page-contact .co-flow::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(143, 163, 155, 0.07) 1px, transparent 1px);
  background-size: 100% 96px;
  pointer-events: none;
}

.page-contact .co-flow .container {
  position: relative;
  z-index: 1;
}

.page-contact .co-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(24px, 3vw, 32px);
}

.page-contact .co-flow__step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid var(--line-gold);
  transition: border-color 0.25s var(--ease);
}

.page-contact .co-flow__step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 9px;
  height: 9px;
  background: var(--gold);
  transform: translateY(-50%) rotate(45deg);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-contact .co-flow__step:hover {
  border-top-color: var(--gold-hi);
}

.page-contact .co-flow__step:hover::before {
  background: var(--gold-hi);
  box-shadow: 0 0 0 4px rgba(216, 166, 58, 0.18);
}

.page-contact .co-flow__num {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--gold-hi);
}

.page-contact .co-flow__name {
  margin: 10px 0 6px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-contact .co-flow__dur {
  margin: 0 0 8px;
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-contact .co-flow__detail {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
  transition: color 0.25s var(--ease);
}

.page-contact .co-flow__step:hover .co-flow__detail {
  color: var(--paper);
}

.page-contact .co-flow__aside {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(36px, 5vw, 68px);
  padding-top: clamp(26px, 4vw, 48px);
  border-top: 1px solid var(--line-grey);
}

.page-contact .co-flow__fig {
  margin: 0;
}

.page-contact .co-flow__fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-contact .co-flow__note h3 {
  margin: 0 0 14px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--gold-hi);
}

.page-contact .co-flow__note p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 52ch;
}

/* ---------- 服务时间 ---------- */
.page-contact .co-hours {
  background: var(--paper);
  padding: var(--co-pad) 0;
}

.page-contact .co-hours__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  border-top: 1px solid var(--co-line);
}

.page-contact .co-hours__list li {
  padding: clamp(20px, 3vw, 30px) 0;
  border-bottom: 1px solid var(--co-line-soft);
}

.page-contact .co-hours__list li:last-child {
  border-bottom: 0;
}

.page-contact .co-hours__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(30px, 4.4vw, 46px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-3);
}

.page-contact .co-hours__list h3 {
  margin: 12px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.page-contact .co-hours__list li > p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #3f4f49;
}

/* ---------- 合作问答 ---------- */
.page-contact .co-faq {
  background: var(--ink-2);
  color: var(--paper);
  padding: var(--co-pad) 0;
}

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

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

.page-contact .co-faq__item summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  padding: 22px 44px 22px 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
  transition: color 0.2s var(--ease);
}

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

.page-contact .co-faq__item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 20px;
  font-family: var(--font-num);
  font-size: 22px;
  line-height: 1;
  color: var(--gold);
}

.page-contact .co-faq__item[open] summary {
  color: var(--gold-hi);
}

.page-contact .co-faq__item[open] summary::after {
  content: "–";
  color: var(--gold-hi);
}

.page-contact .co-faq__body {
  padding: 0 0 24px;
  max-width: 66ch;
}

.page-contact .co-faq__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 联络方式 ---------- */
.page-contact .co-contact {
  background: var(--paper);
  padding: var(--co-pad) 0;
}

.page-contact .co-contact__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-contact .co-contact__lead h2 {
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(25px, 4vw, 40px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  margin: 12px 0 18px;
  color: var(--text);
}

.page-contact .co-contact__lead p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.85;
  color: #3f4f49;
  max-width: 52ch;
}

.page-contact .co-contact__cards {
  display: grid;
  gap: 16px;
}

.page-contact .co-contact__card {
  background: var(--ink);
  color: var(--paper);
  padding: clamp(20px, 3vw, 28px);
  border-left: 3px solid var(--gold);
}

.page-contact .co-contact__card:nth-child(2) {
  border-left-color: var(--cyan);
}

.page-contact .co-contact__k {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-hi);
}

.page-contact .co-contact__tip {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-grey);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .co-hours__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .co-hours__list li {
    border-bottom: 0;
    border-left: 1px solid var(--co-line-soft);
    padding-left: clamp(18px, 2.4vw, 30px);
    padding-right: clamp(12px, 2vw, 24px);
  }

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

@media (min-width: 900px) {
  .page-contact .co-hero {
    padding-top: calc(var(--co-pad) * 0.55);
  }

  .page-contact .co-hero__bg::after {
    background: linear-gradient(90deg, var(--ink) 28%, rgba(11, 43, 36, 0.86) 56%, rgba(11, 43, 36, 0.42) 100%);
  }

  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-contact .co-card {
    margin-top: clamp(56px, 9vw, 132px);
  }

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

  .page-contact .co-type {
    border-bottom: 0;
    border-left: 1px solid var(--co-line);
  }

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

  .page-contact .co-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    column-gap: clamp(20px, 2.4vw, 36px);
  }

  .page-contact .co-flow__aside {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
  }

  .page-contact .co-contact__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
  }
}

@media (min-width: 1100px) {
  .page-contact .co-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .co-type,
  .page-contact .co-flow__step,
  .page-contact .co-flow__step::before,
  .page-contact .co-flow__detail,
  .page-contact .co-faq__item summary {
    transition: none;
  }
}
<<<END>>>