.page-contact {
  --contact-gap: clamp(1.1rem, 2.6vw, 2rem);
  --contact-line: rgba(42, 52, 66, 0.7);
  position: relative;
}

/* ---------- 面包屑 ---------- */
.page-contact .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 1.6rem;
  padding: 0;
  list-style: none;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-contact .breadcrumb__list a {
  color: var(--cream);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-contact .breadcrumb__list a:hover {
  color: var(--cyan);
}

.page-contact .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 0.55rem;
  color: var(--steel);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding-top: clamp(2.2rem, 7vw, 4.5rem);
  overflow: hidden;
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -18%;
  width: min(78vw, 680px);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(255, 107, 26, 0.3), transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  bottom: -18%;
  left: -12%;
  width: min(56vw, 460px);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(0, 229, 255, 0.12), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

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

.page-contact .contact-hero__title {
  margin: 0.9rem 0 1.3rem;
  font-size: clamp(2.3rem, 9vw, 5.4rem);
  line-height: 1.03;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-contact .contact-hero__lede {
  max-width: 46rem;
}

.page-contact .contact-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: clamp(1.6rem, 4vw, 2.4rem);
}

.page-contact .contact-hero__jump {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.25rem;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px dashed rgba(0, 229, 255, 0.5);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-contact .contact-hero__jump:hover {
  color: var(--cream);
  border-color: var(--cream);
}

/* ---------- 通用章节头 ---------- */
.page-contact .contact-head {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-width: 48rem;
}

.page-contact .contact-head__title {
  margin: 0;
  font-size: clamp(1.55rem, 4.6vw, 2.85rem);
  font-weight: 300;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-contact .contact-note {
  margin: clamp(1.4rem, 3.5vw, 2rem) 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .contact-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

.page-contact .contact-note a:hover {
  color: var(--cream);
  border-color: var(--cream);
}

/* ---------- 合作方向 ---------- */
.page-contact .coop-layout {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(1.5rem, 4vw, 2.6rem);
}

.page-contact .coop-layout__media {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-contact .coop-list {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .coop-card {
  position: relative;
  padding: clamp(1.3rem, 3vw, 1.9rem);
  border-radius: var(--radius);
  background: linear-gradient(160deg, var(--ink-2), var(--ink-3));
  overflow: hidden;
}

.page-contact .coop-card::before {
  content: "";
  position: absolute;
  top: -34px;
  right: -34px;
  width: 128px;
  height: 128px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 26, 0.24), transparent 70%);
}

.page-contact .coop-card--cyan::before {
  background: radial-gradient(circle, rgba(0, 229, 255, 0.22), transparent 70%);
}

.page-contact .coop-card--violet::before {
  background: radial-gradient(circle, rgba(122, 92, 255, 0.26), transparent 70%);
}

.page-contact .coop-card--amber::before {
  background: radial-gradient(circle, rgba(255, 197, 61, 0.2), transparent 70%);
}

.page-contact .coop-card::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--flame);
}

.page-contact .coop-card--cyan::after {
  background: var(--cyan);
}

.page-contact .coop-card--violet::after {
  background: var(--violet);
}

.page-contact .coop-card--amber::after {
  background: var(--amber);
}

.page-contact .coop-card__idx {
  position: relative;
  display: block;
  margin-bottom: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .coop-card__title {
  position: relative;
  margin: 0 0 0.55rem;
  font-size: 1.14rem;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .coop-card p {
  position: relative;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 媒体与内容合作 ---------- */
.page-contact .media-grid {
  display: grid;
  gap: var(--contact-gap);
  margin-top: clamp(1.5rem, 4vw, 2.6rem);
}

.page-contact .media-card {
  position: relative;
  padding: clamp(1.25rem, 2.8vw, 1.8rem);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(19, 26, 36, 0.92), rgba(11, 14, 20, 0.72));
}

.page-contact .media-card__title {
  margin: 0.85rem 0 0.55rem;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .media-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 合作流程 ---------- */
.page-contact .steps {
  counter-reset: step;
  display: grid;
  gap: 0.9rem;
  margin: clamp(1.5rem, 4vw, 2.6rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .step {
  position: relative;
  padding: 1.35rem 1.2rem;
  border-radius: var(--radius-sm);
  background: var(--ink-2);
}

.page-contact .step__num {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--flame);
}

.page-contact .step__title {
  margin: 0 0 0.45rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .step p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 联系渠道 ---------- */
.page-contact .channel-layout {
  display: grid;
  gap: var(--contact-gap);
}

.page-contact .channel-board {
  position: relative;
  padding: clamp(1.5rem, 3.6vw, 2.8rem);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, #1d1207, var(--ink-2) 58%, var(--ink-3));
  overflow: hidden;
}

.page-contact .channel-board::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 5px;
  background: linear-gradient(180deg, var(--flame), rgba(255, 107, 26, 0));
}

.page-contact .channel-board__title {
  margin: 0.9rem 0 0.7rem;
  font-size: clamp(1.5rem, 4.4vw, 2.5rem);
  font-weight: 300;
  line-height: 1.18;
  color: var(--cream);
}

.page-contact .channel-board__lead {
  margin: 0 0 0.6rem;
  max-width: 34rem;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .channel-list {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-contact .channel-item {
  display: grid;
  gap: 0.35rem;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .channel-item:last-child {
  border-bottom: 0;
  padding-bottom: 0.4rem;
}

.page-contact .channel-item__label {
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-contact .channel-item__value {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 4vw, 1.5rem);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--cream);
  text-decoration: none;
  word-break: break-word;
  overflow-wrap: anywhere;
  transition: color 0.2s ease;
}

.page-contact a.channel-item__value:hover {
  color: var(--cyan);
}

.page-contact .channel-item__value--text {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 0.95rem;
  line-height: 1.7;
  letter-spacing: 0.01em;
}

.page-contact .channel-board__foot {
  margin: 1.4rem 0 0;
  font-size: 0.82rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .channel-board__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

.page-contact .channel-board__foot a:hover {
  color: var(--cream);
  border-color: var(--cream);
}

.page-contact .channel-visual {
  position: relative;
  aspect-ratio: 10 / 7;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .channel-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 用户反馈 ---------- */
.page-contact .feedback-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.page-contact .feedback-lead__title {
  margin: 0.9rem 0 0.8rem;
  font-size: clamp(1.5rem, 4.4vw, 2.5rem);
  font-weight: 300;
  line-height: 1.18;
  color: var(--cream);
}

.page-contact .feedback-lead p {
  margin: 0 0 1.5rem;
  max-width: 32rem;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--mist);
}

.page-contact .feedback-list {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-contact .feedback-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--contact-line);
}

.page-contact .feedback-item:last-child {
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .feedback-item__num {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--flame);
  padding-top: 0.15rem;
}

.page-contact .feedback-item__title {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--cream);
}

.page-contact .feedback-item p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--mist);
}

.page-contact .feedback-item a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.35);
}

.page-contact .feedback-item a:hover {
  color: var(--cream);
  border-color: var(--cream);
}

/* ---------- 常见合作问题 ---------- */
.page-contact .faq-list {
  margin-top: clamp(1.2rem, 3.5vw, 2rem);
  border-top: 1px solid var(--contact-line);
}

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

.page-contact .faq-item__q {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 0;
  font-size: clamp(0.98rem, 2.6vw, 1.12rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--cream);
  cursor: pointer;
  list-style: none;
}

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

.page-contact .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--flame);
}

.page-contact .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--cyan);
}

.page-contact .faq-item__a {
  padding: 0 0 1.3rem;
}

.page-contact .faq-item__a p {
  margin: 0;
  max-width: 52rem;
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-contact .media-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-contact .coop-layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

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

  .page-contact .coop-layout__media {
    aspect-ratio: 4 / 5;
    height: 100%;
  }

  .page-contact .channel-layout {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: stretch;
  }

  .page-contact .channel-visual {
    aspect-ratio: 4 / 5;
    height: 100%;
  }

  .page-contact .feedback-layout {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-contact .steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-contact .step {
    padding: 1.5rem 1.25rem 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .contact-hero__jump,
  .page-contact .channel-item__value,
  .page-contact .breadcrumb__list a {
    transition: none;
  }
}