/* ===== 商务合作页 · page-contact ===== */
.page-contact {
  --pc-card-pad: clamp(20px, 2.6vw, 30px);
  --pc-gap: clamp(16px, 2vw, 26px);
  --pc-soft: rgba(245, 241, 232, 0.86);
  background: var(--cream);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(242, 101, 34, 0.24), transparent 58%),
    var(--green-900);
  color: var(--cream);
  padding: calc(var(--header-h) + clamp(28px, 6vw, 52px)) 0 clamp(44px, 7vw, 86px);
  border-bottom: var(--border);
}

.page-contact .contact-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(20px, 4vw, 40px);
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-contact .contact-hero .breadcrumb-item a {
  color: var(--silver);
  text-decoration: none;
}

.page-contact .contact-hero .breadcrumb-item a:hover {
  color: var(--orange-light);
}

.page-contact .contact-hero .breadcrumb-item[aria-current="page"] {
  color: var(--orange-light);
}

.page-contact .contact-hero .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--green-600);
}

.page-contact .contact-hero .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange-light);
  margin: 0;
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
}

.page-contact .contact-hero__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(2.1rem, 8.4vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--cream);
  margin: 14px 0 20px;
}

.page-contact .contact-hero__title .headline-line {
  display: block;
}

.page-contact .contact-hero__lead {
  max-width: 46ch;
  font-size: clamp(1rem, 1.5vw, 1.0625rem);
  line-height: 1.85;
  color: var(--pc-soft);
  margin: 0 0 28px;
}

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

.page-contact .contact-hero__actions .btn {
  text-decoration: none;
}

.page-contact .contact-hero__aside {
  display: grid;
  gap: 18px;
  padding: 24px;
  border: 2px solid var(--green-600);
  border-radius: var(--radius);
  background: rgba(18, 79, 60, 0.55);
  box-shadow: var(--shadow-hard);
}

.page-contact .contact-hero__aside-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-contact .contact-hero__fact {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(199, 203, 201, 0.28);
}

.page-contact .contact-hero__fact b {
  flex: none;
  min-width: 4.6rem;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.85rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange-light);
}

.page-contact .contact-hero__fact span {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--pc-soft);
}

/* ---------- 章节头（页内统一） ---------- */
.page-contact .section-head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 20px;
  margin-bottom: clamp(26px, 4vw, 46px);
  padding-right: 0;
}

.page-contact .section-number {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 4.4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.4vw, 2.25rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-contact .vertical-note {
  display: none;
}

/* ---------- 四类合作方式 ---------- */
.page-contact .coop-types {
  background: var(--cream);
  padding: clamp(54px, 8vw, 100px) 0;
}

.page-contact .coop-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--pc-gap);
}

.page-contact .coop-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: var(--pc-card-pad);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  color: var(--cream);
  outline-offset: 4px;
  transition: transform 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-contact .coop-card:hover,
.page-contact .coop-card:focus {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--ink);
}

.page-contact .coop-card:focus-visible {
  outline: 3px solid var(--orange);
}

.page-contact .coop-card--wine { background: var(--wine); }
.page-contact .coop-card--indigo { background: var(--indigo); }
.page-contact .coop-card--green { background: var(--green-800); }
.page-contact .coop-card--ink { background: var(--ink); }

.page-contact .coop-card__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange-light);
}

.page-contact .coop-card__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-contact .coop-card__for {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--silver);
}

.page-contact .coop-card__media {
  margin: 6px 0 2px;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 4px 4px 0 rgba(16, 24, 32, 0.6);
  overflow: hidden;
  background: var(--green-900);
}

.page-contact .coop-card__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-contact .coop-card__desc {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--pc-soft);
}

.page-contact .coop-card__more {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.38s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease);
}

.page-contact .coop-card__more ul {
  margin: 0;
  padding-left: 1.05em;
  display: grid;
  gap: 6px;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--silver);
}

.page-contact .coop-card:hover .coop-card__more,
.page-contact .coop-card:focus .coop-card__more,
.page-contact .coop-card:focus-within .coop-card__more {
  max-height: 24rem;
  margin-top: 4px;
  opacity: 1;
}

/* ---------- 合作流程 ---------- */
.page-contact .coop-flow {
  background: var(--green-900);
  color: var(--cream);
  padding: clamp(54px, 8vw, 100px) 0;
}

.page-contact .coop-flow .section-title {
  color: var(--cream);
}

.page-contact .coop-flow__banner {
  margin: 0 0 clamp(28px, 4vw, 48px);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  background: var(--green-800);
}

.page-contact .coop-flow__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.page-contact .coop-flow__banner .figure-caption {
  padding: 10px 16px;
  background: var(--ink);
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-contact .flow-track {
  display: flex;
  border: 2px solid var(--silver);
  border-bottom: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-contact .flow-tab {
  flex: 1 0 auto;
  min-width: 172px;
  padding: 17px 18px;
  border: 0;
  border-right: 1px solid rgba(199, 203, 201, 0.4);
  background: transparent;
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  text-align: left;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-contact .flow-tab:last-child {
  border-right: 0;
}

.page-contact .flow-tab:hover {
  background: rgba(242, 101, 34, 0.16);
  color: var(--cream);
}

.page-contact .flow-tab[aria-selected="true"] {
  background: var(--orange);
  color: var(--ink);
  font-weight: 700;
}

.page-contact .flow-tab:focus-visible {
  outline: 3px solid var(--orange-light);
  outline-offset: -3px;
}

.page-contact .flow-panel {
  display: grid;
  gap: 12px;
  padding: clamp(22px, 3vw, 36px);
  border: 2px solid var(--silver);
  background: var(--green-800);
}

.page-contact .flow-panel + .flow-panel {
  margin-top: 16px;
}

.page-contact .flow-panel h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
  line-height: 1.4;
  color: var(--cream);
}

.page-contact .flow-panel p {
  margin: 0;
  max-width: 62ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--pc-soft);
}

.page-contact .flow-panel__meta {
  padding-top: 12px;
  border-top: 1px dashed rgba(199, 203, 201, 0.4);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--orange-light);
}

/* ---------- 联系卡 ---------- */
.page-contact .contact-band {
  background: var(--cream);
  padding: clamp(50px, 8vw, 96px) 0;
}

.page-contact .contact-card {
  display: grid;
  gap: clamp(26px, 3.4vw, 44px);
  padding: clamp(26px, 4vw, 54px);
  background: var(--green-900);
  border: 3px solid var(--orange);
  border-radius: var(--radius);
  box-shadow: 10px 10px 0 var(--ink);
  color: var(--cream);
}

.page-contact .contact-card .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange-light);
}

.page-contact .contact-card__title {
  margin: 10px 0 14px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.3rem);
  line-height: 1.22;
  color: var(--cream);
}

.page-contact .contact-card__lead {
  margin: 0;
  max-width: 40ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--pc-soft);
}

.page-contact .contact-item {
  padding: 4px 0 4px 16px;
  border-left: 3px solid var(--orange);
  display: grid;
  gap: 7px;
}

.page-contact .contact-item + .contact-item {
  margin-top: 22px;
}

.page-contact .contact-item__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange-light);
}

.page-contact .contact-item__value {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.8vw, 1.6rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--cream);
  text-decoration: none;
  word-break: break-word;
  transition: color 0.2s var(--ease);
}

.page-contact .contact-item__value:hover {
  color: var(--orange-light);
}

.page-contact .contact-item__value:focus-visible {
  outline: 3px solid var(--orange-light);
  outline-offset: 3px;
}

.page-contact .contact-item__value--text {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.7;
}

.page-contact .contact-item__note {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--silver);
}

/* ---------- 准备清单 ---------- */
.page-contact .coop-prep {
  background: var(--cream);
  padding: clamp(50px, 8vw, 96px) 0;
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 22px 24px;
  background: #FFFFFF;
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-tight);
}

.page-contact .prep-box {
  position: relative;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  flex: none;
  border: 2px solid var(--ink);
  background: var(--cream);
}

.page-contact .prep-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 4px;
  width: 11px;
  height: 6px;
  border-left: 3px solid var(--orange);
  border-bottom: 3px solid var(--orange);
  transform: rotate(-45deg);
}

.page-contact .prep-item h3 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.4;
  color: var(--ink);
}

.page-contact .prep-item p {
  margin: 0;
  max-width: 46ch;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--silver-dark);
}

.page-contact .prep-item p a {
  color: var(--green-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .prep-item p a:hover {
  color: var(--orange);
}

/* ---------- 常见疑问 ---------- */
.page-contact .coop-faq {
  background: var(--wine);
  color: var(--cream);
  padding: clamp(50px, 8vw, 96px) 0;
}

.page-contact .coop-faq .section-title {
  color: var(--cream);
}

.page-contact .coop-faq .section-number {
  color: var(--orange-light);
}

.page-contact .faq-item {
  margin-bottom: 14px;
  border: 2px solid rgba(245, 241, 232, 0.65);
  border-radius: 0;
  background: rgba(16, 24, 32, 0.16);
}

.page-contact .faq-item:last-child {
  margin-bottom: 0;
}

.page-contact .faq-item summary {
  position: relative;
  display: block;
  padding: 19px 56px 19px 22px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.5;
  color: var(--cream);
}

.page-contact .faq-item summary::-webkit-details-marker {
  display: none;
}

.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--orange-light);
}

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

.page-contact .faq-item summary:focus-visible {
  outline: 3px solid var(--orange-light);
  outline-offset: -3px;
}

.page-contact .faq-item .disclosure__body {
  padding: 0 22px 22px;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--pc-soft);
}

.page-contact .faq-item .disclosure__body p {
  margin: 0;
  max-width: 66ch;
}

.page-contact .faq-item .disclosure__body a {
  color: var(--orange-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收尾 ---------- */
.page-contact .coop-cta {
  background: var(--cream);
  padding: clamp(48px, 7vw, 88px) 0;
}

.page-contact .coop-cta__box {
  display: grid;
  gap: 16px;
  justify-items: start;
  padding: clamp(26px, 4vw, 50px);
  background: var(--green-800);
  border: var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-hard);
  color: var(--cream);
}

.page-contact .coop-cta__box h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.25;
  color: var(--cream);
}

.page-contact .coop-cta__box p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--pc-soft);
}

.page-contact .coop-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 4px;
}

.page-contact .coop-cta__actions .btn {
  text-decoration: none;
}

/* ---------- 触摸设备：卡片要点直接展开 ---------- */
@media (hover: none) {
  .page-contact .coop-card__more {
    max-height: none;
    margin-top: 4px;
    opacity: 1;
  }
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-contact .prep-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }

  .page-contact .contact-card__items {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
  }

  .page-contact .contact-item + .contact-item {
    margin-top: 0;
  }

  .page-contact .contact-item {
    margin-top: 0;
  }

  .page-contact .contact-card__items .contact-item:last-child {
    grid-column: 1 / -1;
    margin-top: 22px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: clamp(36px, 5vw, 64px);
    align-items: end;
  }

  .page-contact .section-head {
    padding-right: 48px;
  }

  .page-contact .vertical-note {
    position: absolute;
    right: 0;
    top: 0;
    display: block;
    max-height: 96px;
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.24em;
    color: var(--silver-dark);
    white-space: nowrap;
  }

  .page-contact .coop-flow .vertical-note,
  .page-contact .coop-faq .vertical-note {
    color: var(--silver);
  }

  .page-contact .contact-card {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-contact .coop-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-contact .contact-hero__grid {
    grid-template-columns: minmax(0, 1fr) 350px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-card,
  .page-contact .coop-card__more,
  .page-contact .flow-tab,
  .page-contact .contact-item__value {
    transition-duration: 0.001ms;
  }

  .page-contact .coop-card:hover,
  .page-contact .coop-card:focus {
    transform: none;
  }
}