.page-contact {
  --pc-line: rgba(110, 114, 118, 0.34);
  --pc-line-soft: rgba(110, 114, 118, 0.16);
  --pc-night-soft: rgba(12, 44, 28, 0.55);
  background: var(--charcoal);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.75;
  max-width: 100%;
}

.page-contact section {
  padding: clamp(44px, 6.5vw, 92px) 0;
}

.page-contact h1,
.page-contact h2,
.page-contact h3 {
  font-family: var(--font-display);
  color: var(--paper);
}

.page-contact .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
}

.page-contact .section-head {
  margin-bottom: clamp(22px, 3vw, 38px);
}

.page-contact .section-head__title {
  font-size: clamp(22px, 2.8vw, 34px);
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 8px 0 10px;
}

.page-contact .section-head__note {
  color: var(--steel);
  font-size: clamp(14px, 1.2vw, 16px);
  max-width: 62ch;
  margin: 0;
}

.page-contact .section-head__index {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

/* ---------- 首屏 ---------- */

.page-contact .coop-hero {
  padding-top: clamp(28px, 4vw, 52px);
  padding-bottom: clamp(48px, 6vw, 88px);
  background:
    radial-gradient(125% 95% at 86% -12%, rgba(31, 111, 67, 0.38), transparent 62%),
    linear-gradient(180deg, var(--night), var(--charcoal) 74%);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .coop-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  margin-top: clamp(22px, 3vw, 40px);
}

.page-contact .coop-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 1px solid var(--pc-line);
  border-radius: var(--capsule);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-contact .coop-kicker .num {
  color: var(--amber);
  font-weight: 700;
}

.page-contact .coop-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(28px, 4.6vw, 54px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.page-contact .coop-hero__intro {
  max-width: 60ch;
  margin: 0 0 28px;
  font-size: clamp(15px, 1.25vw, 17px);
  color: var(--steel);
  line-height: 1.85;
}

.page-contact .coop-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .coop-hero__facts {
  list-style: none;
  margin: 0;
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--pc-night-soft);
  border: 1px solid var(--pc-line);
  border-left: 3px solid var(--turf);
}

.page-contact .coop-hero__facts li {
  display: grid;
  grid-template-columns: minmax(72px, auto) minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .coop-hero__facts li:first-child {
  padding-top: 0;
}

.page-contact .coop-hero__facts li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .coop-fact__num {
  font-size: clamp(20px, 1.9vw, 26px);
  font-weight: 700;
  color: var(--amber);
  line-height: 1.1;
}

.page-contact .coop-fact__text {
  font-size: 14px;
  color: var(--steel);
  line-height: 1.7;
}

/* ---------- 合作方向 ---------- */

.page-contact .coop-directions {
  background: var(--charcoal);
}

.page-contact .coop-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .coop-filter .filter-btn {
  padding: 8px 16px;
  min-height: 40px;
  font-size: 14px;
  font-family: var(--font-body);
  border: 1px solid var(--pc-line);
  border-radius: var(--capsule);
  background: transparent;
  color: var(--steel);
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-contact .coop-filter .filter-btn:hover,
.page-contact .coop-filter .filter-btn:focus-visible {
  color: var(--elec);
  border-color: var(--elec);
}

.page-contact .coop-filter .filter-btn.is-active {
  background: var(--turf);
  border-color: var(--turf);
  color: var(--paper);
}

.page-contact .coop-filter .filter-status {
  margin: 0 0 0 auto;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--concrete);
}

.page-contact .coop-directions__body {
  display: grid;
  gap: clamp(22px, 3vw, 42px);
}

.page-contact .coop-direction-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .coop-direction {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 1.8vw, 24px);
  padding: clamp(18px, 2.2vw, 26px);
  background: var(--charcoal-2);
  border: 1px solid var(--pc-line);
  border-left: 3px solid var(--turf);
  transition: border-color 0.18s ease, transform 0.18s ease;
}

.page-contact .coop-direction:hover {
  border-left-color: var(--elec);
  transform: translateY(-2px);
}

.page-contact .coop-direction__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--amber);
  line-height: 1;
  padding-top: 4px;
}

.page-contact .coop-direction__body h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-contact .coop-direction__body p {
  margin: 0 0 12px;
  font-size: 15px;
  color: var(--steel);
  line-height: 1.8;
}

.page-contact .coop-direction__fit {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--concrete);
  padding-left: 12px;
  border-left: 2px solid var(--grid);
}

.page-contact .coop-directions__media {
  margin: 0;
  border: 1px solid var(--pc-line);
}

.page-contact .coop-directions__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 能提供什么 ---------- */

.page-contact .coop-deliver {
  background: var(--night);
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .coop-deliver__grid {
  display: grid;
  gap: 1px;
  background: var(--pc-line);
  border: 1px solid var(--pc-line);
}

.page-contact .coop-deliver__item {
  background: var(--night);
  padding: clamp(20px, 2.4vw, 30px);
}

.page-contact .coop-deliver__num {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--elec);
  margin-bottom: 12px;
}

.page-contact .coop-deliver__item h3 {
  margin: 0 0 10px;
  font-size: clamp(16px, 1.4vw, 19px);
  font-weight: 800;
}

.page-contact .coop-deliver__item p {
  margin: 0;
  font-size: 14.5px;
  color: var(--steel);
  line-height: 1.8;
}

/* ---------- 流程 + 联系面板 ---------- */

.page-contact .coop-engage {
  background: var(--charcoal);
}

.page-contact .coop-engage__grid {
  display: grid;
  gap: clamp(26px, 3.5vw, 50px);
}

.page-contact .coop-flow__index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.page-contact .coop-flow__index a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 13px;
  color: var(--steel);
  text-decoration: none;
  border: 1px solid var(--pc-line);
  border-radius: var(--capsule);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-contact .coop-flow__index a .num {
  color: var(--amber);
  font-weight: 700;
}

.page-contact .coop-flow__index a:hover,
.page-contact .coop-flow__index a:focus-visible {
  color: var(--elec);
  border-color: var(--elec);
}

.page-contact .coop-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-contact .coop-flow__list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(180deg, var(--turf), var(--grid));
}

.page-contact .coop-flow__step {
  position: relative;
  padding: 0 0 clamp(24px, 3vw, 34px) 50px;
}

.page-contact .coop-flow__step:last-child {
  padding-bottom: 0;
}

.page-contact .coop-flow__dot {
  position: absolute;
  left: 0;
  top: 0;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--night);
  border: 1px solid var(--turf);
  color: var(--amber);
  font-size: 12px;
  font-weight: 700;
}

.page-contact .coop-flow__body h3 {
  margin: 4px 0 8px;
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 800;
}

.page-contact .coop-flow__body p {
  margin: 0;
  font-size: 15px;
  color: var(--steel);
  line-height: 1.85;
}

.page-contact .coop-contact-panel {
  position: relative;
  padding: clamp(22px, 2.8vw, 34px);
  background: var(--night);
  border: 1px solid var(--pc-line);
}

.page-contact .coop-contact-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--amber), var(--elec));
}

.page-contact .coop-contact-panel h3 {
  margin: 0 0 8px;
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 800;
}

.page-contact .coop-panel-note {
  margin: 0 0 8px;
  font-size: 14px;
  color: var(--steel);
  line-height: 1.75;
}

.page-contact .coop-panel-note--last {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--pc-line-soft);
  color: var(--concrete);
  font-size: 13px;
}

.page-contact .coop-channel {
  display: grid;
  gap: 5px;
  padding: 16px 0;
  border-bottom: 1px solid var(--pc-line-soft);
}

.page-contact .coop-channel__label {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--concrete);
}

.page-contact .coop-channel__value {
  font-family: var(--font-num);
  font-size: clamp(14px, 1.3vw, 16px);
  color: var(--paper);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-contact .coop-channel__value a {
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--pc-line);
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-contact .coop-channel__value a:hover,
.page-contact .coop-channel__value a:focus-visible {
  color: var(--elec);
  border-color: var(--elec);
}

.page-contact .coop-channel__hint {
  font-size: 13.5px;
  color: var(--steel);
  line-height: 1.7;
}

/* ---------- 服务时间与响应 ---------- */

.page-contact .coop-response {
  background: linear-gradient(118deg, var(--night) 0%, var(--charcoal) 72%);
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.page-contact .coop-response__grid {
  display: grid;
  gap: clamp(24px, 3vw, 44px);
}

.page-contact .coop-response__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .coop-response__list li {
  display: grid;
  grid-template-columns: minmax(104px, auto) minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--pc-line-soft);
}

.page-contact .coop-response__key {
  font-size: 14px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.01em;
}

.page-contact .coop-response__val {
  font-size: 14.5px;
  color: var(--steel);
  line-height: 1.8;
}

.page-contact .coop-response__media {
  margin: 0;
  border: 1px solid var(--pc-line);
}

.page-contact .coop-response__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 常见问题 ---------- */

.page-contact .coop-faq {
  background: var(--charcoal);
}

.page-contact .coop-faq__list {
  display: grid;
  gap: 12px;
}

.page-contact .coop-faq__item {
  background: var(--charcoal-2);
  border: 1px solid var(--pc-line);
  border-left: 3px solid var(--grid);
  transition: border-color 0.18s ease;
}

.page-contact .coop-faq__item[open] {
  border-left-color: var(--elec);
}

.page-contact .coop-faq__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.35vw, 17px);
  font-weight: 800;
  color: var(--paper);
}

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

.page-contact .coop-faq__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-num);
  font-size: 18px;
  color: var(--amber);
}

.page-contact .coop-faq__item[open] summary::after {
  content: "−";
}

.page-contact .coop-faq__item p {
  margin: 0;
  padding: 0 22px 20px;
  font-size: 14.5px;
  color: var(--steel);
  line-height: 1.85;
  max-width: 78ch;
}

/* ---------- 焦点环 ---------- */

.page-contact a:focus-visible,
.page-contact button:focus-visible,
.page-contact summary:focus-visible {
  outline: 2px solid var(--elec);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-contact .coop-deliver__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .coop-response__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-contact .coop-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .coop-directions__body {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-contact .coop-engage__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.88fr);
    align-items: start;
  }
}

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

@media (max-width: 620px) {
  .page-contact .coop-direction {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
  }

  .page-contact .coop-direction__num {
    padding-top: 0;
  }

  .page-contact .coop-hero__facts li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-contact .coop-response__list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 4px;
  }

  .page-contact .coop-filter .filter-status {
    margin: 4px 0 0;
    flex-basis: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .coop-direction,
  .page-contact .coop-faq__item,
  .page-contact .coop-filter .filter-btn,
  .page-contact .coop-flow__index a {
    transition: none;
  }

  .page-contact .coop-direction:hover {
    transform: none;
  }
}