.page-contact {
  background: var(--ink);
  color: var(--frost);
  overflow-x: hidden;
}

/* ===== 首屏 ===== */
.page-contact .contact-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--ink-deep) 0%, var(--ink) 100%);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    104deg,
    rgba(30, 51, 80, 0.85) 0 1px,
    transparent 1px 54px
  );
  opacity: 0.5;
}

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

.page-contact .contact-hero h1 {
  margin: 18px 0 0;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.3rem, 8vw, 5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--starbright);
}

.page-contact .contact-lede {
  margin: 26px 0 0;
  max-width: 62ch;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
  line-height: 1.95;
  color: var(--frost);
}

.page-contact .hero-marks {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 34px;
}

/* ===== 区块标题 ===== */
.page-contact .sec-head {
  max-width: 720px;
  margin-bottom: clamp(28px, 4vw, 52px);
}

.page-contact .sec-head h2 {
  margin: 12px 0 0;
  font-size: clamp(1.6rem, 4.2vw, 2.5rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--starbright);
}

.page-contact .sec-sub {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--mist);
}

/* ===== 合作方向 ===== */
.page-contact .dir-layout {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
}

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

.page-contact .dir-item {
  display: grid;
  gap: 8px 22px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-bottom: 1px solid var(--grid);
}

.page-contact .dir-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--orange);
}

.page-contact .dir-body h3 {
  margin: 0 0 10px;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  color: var(--starbright);
}

.page-contact .dir-body p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.92;
  color: var(--frost);
}

.page-contact .dir-figure {
  margin: 0;
  border: 1px solid var(--grid);
}

/* ===== 合作流程 ===== */
.page-contact .flow-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .flow-item {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: clamp(26px, 3.4vw, 40px);
  background: var(--ink-band);
}

.page-contact .flow-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--green);
}

.page-contact .flow-item h3 {
  margin: 0;
  font-size: 1.14rem;
  color: var(--starbright);
}

.page-contact .flow-item p {
  margin: 0;
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--frost);
}

/* ===== 联系通道 ===== */
.page-contact .channel-grid {
  display: grid;
  gap: 1px;
  background: var(--grid);
  border: 1px solid var(--grid);
}

.page-contact .channel {
  display: grid;
  gap: 14px;
  align-content: start;
  padding: clamp(24px, 3vw, 34px);
  background: var(--ink);
}

.page-contact .channel-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-contact .channel-val {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  line-height: 1.75;
  color: var(--starbright);
  overflow-wrap: anywhere;
}

.page-contact .channel--text .channel-val {
  font-family: var(--font-body);
  font-size: 0.98rem;
  letter-spacing: 0;
  line-height: 1.9;
}

.page-contact .channel .copy-btn {
  justify-self: start;
}

/* ===== 到访 ===== */
.page-contact .visit-card {
  max-width: 900px;
  padding: clamp(20px, 3vw, 34px) clamp(18px, 3vw, 36px);
  border-left: 2px solid var(--orange);
  background: linear-gradient(90deg, rgba(255, 122, 47, 0.08), transparent 62%);
}

.page-contact .visit-card h2 {
  margin: 12px 0 0;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.15;
  color: var(--starbright);
}

.page-contact .visit-card p {
  margin: 16px 0 0;
  font-size: 1rem;
  line-height: 1.95;
  color: var(--frost);
}

/* ===== 常见问题 ===== */
.page-contact .faq-list {
  border-top: 1px solid var(--grid);
}

.page-contact .faq-item {
  border-bottom: 1px solid var(--grid);
}

.page-contact .faq-item summary {
  position: relative;
  padding: clamp(18px, 2.4vw, 24px) 46px clamp(18px, 2.4vw, 24px) 0;
  font-size: 1.03rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--starbright);
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}

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

.page-contact .faq-item summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  line-height: 1;
  color: var(--green);
}

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

.page-contact .faq-item summary:hover {
  color: var(--green);
}

.page-contact .faq-item summary:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

.page-contact .faq-item p {
  margin: 0;
  padding: 0 46px clamp(20px, 2.6vw, 26px) 0;
  font-size: 0.96rem;
  line-height: 1.92;
  color: var(--frost);
}

/* ===== 收尾 ===== */
.page-contact .contact-close {
  position: relative;
  padding-bottom: clamp(56px, 7vw, 96px);
}

.page-contact .contact-close::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: clamp(36px, 5vw, 64px);
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--orange) 16%,
    var(--green) 50%,
    var(--teal) 80%,
    transparent 100%
  );
  opacity: 0.5;
}

.page-contact .close-figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
  border: 1px solid var(--grid);
}

.page-contact .close-bar {
  display: grid;
  gap: 20px;
}

.page-contact .close-bar p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--frost);
}

.page-contact .close-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 图片基础 ===== */
.page-contact .media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ===== 响应式 ===== */
@media (min-width: 560px) {
  .page-contact .dir-item {
    grid-template-columns: 88px minmax(0, 1fr);
  }
}

@media (min-width: 760px) {
  .page-contact .close-bar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 860px) {
  .page-contact .flow-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 920px) {
  .page-contact .dir-layout {
    grid-template-columns: minmax(0, 1.42fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-contact .channel-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-contact .contact-hero h1 {
    margin-left: -2px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .faq-item summary {
    transition: none;
  }
}