/* ===== 合作联系页 · page-contact ===== */
.page-contact .band {
  padding: clamp(44px, 7vw, 88px) 0;
}

.page-contact .contact-hero {
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(40px, 6vw, 76px);
}

.page-contact .crumbs {
  margin-bottom: clamp(22px, 3.5vw, 38px);
}

/* ---- 首屏 ---- */
.page-contact .hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
}

.page-contact .hero-copy .display--xl {
  margin: 14px 0 0;
  max-width: 13em;
}

.page-contact .hero-copy .lede {
  margin-top: 20px;
  max-width: 56ch;
}

.page-contact .hero-actions {
  margin-top: 28px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-contact .hero-side {
  display: grid;
  gap: 14px;
}

.page-contact .side-note {
  border-left: 3px solid var(--gold);
  padding: 6px 0 6px 16px;
}

.page-contact .side-note__k {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold-dark);
}

.page-contact .side-note__v {
  margin: 5px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 300;
  line-height: 1.15;
  color: var(--ink);
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(240px, 0.8fr);
    gap: 56px;
    align-items: end;
  }
  .page-contact .hero-side {
    padding-bottom: 8px;
  }
}

/* ---- 合作方向 ---- */
.page-contact .lede--tight {
  margin-top: 12px;
  max-width: 62ch;
}

.page-contact .coop-stack {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 18px;
}

.page-contact .coop {
  padding: clamp(22px, 3.5vw, 34px);
  margin: 0;
}

.page-contact .coop p {
  margin: 0 0 12px;
}

.page-contact .coop__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold-dark);
}

.page-contact p.coop__meta {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-55);
}

.page-contact .coop--a {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  box-shadow: 0 20px 44px -34px rgba(23, 22, 26, 0.55);
}

.page-contact .coop--b {
  background: rgba(199, 154, 46, 0.1);
  border: 1px solid rgba(199, 154, 46, 0.38);
  border-radius: var(--radius-m);
}

.page-contact .coop--c {
  background: linear-gradient(135deg, rgba(199, 154, 46, 0.18), rgba(199, 154, 46, 0.05));
  border: 1px solid var(--line-strong);
  border-radius: 34px;
}

@media (min-width: 900px) {
  .page-contact .coop-stack {
    grid-template-columns: 1.25fr 1fr;
    grid-template-areas:
      "a b"
      "c c";
  }
  .page-contact .coop--a { grid-area: a; }
  .page-contact .coop--b { grid-area: b; }
  .page-contact .coop--c {
    grid-area: c;
    display: grid;
    grid-template-columns: minmax(160px, 230px) minmax(0, 1fr);
    column-gap: 32px;
  }
  .page-contact .coop--c .coop__tag { grid-area: 1 / 1; }
  .page-contact .coop--c .h-sub { grid-area: 2 / 1; margin-top: 6px; }
  .page-contact .coop--c .coop__body { grid-area: 1 / 2 / 3 / 3; margin-top: 0; }
  .page-contact .coop--c .coop__meta { grid-area: 3 / 1 / 4 / 3; }
}

/* ---- 对接流程 ---- */
.page-contact .flow {
  position: relative;
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 30px;
}

.page-contact .flow__step {
  position: relative;
  padding-top: 26px;
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(199, 154, 46, 0.16);
}

.page-contact .flow__step p {
  margin: 8px 0 0;
  color: var(--ink-70);
}

.page-contact .flow__out {
  font-size: 14px;
  color: var(--ink-55);
}

.page-contact .flow__out-k {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: rgba(46, 125, 116, 0.12);
  color: var(--jade);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
}

@media (min-width: 860px) {
  .page-contact .flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 26px;
  }
  .page-contact .flow__step {
    padding-top: 32px;
  }
  .page-contact .flow::before {
    content: "";
    position: absolute;
    top: 5px;
    left: 14px;
    right: 14px;
    height: 1px;
    background: linear-gradient(90deg, rgba(199, 154, 46, 0.12), rgba(199, 154, 46, 0.6), rgba(199, 154, 46, 0.12));
  }
}

.page-contact .flow-figure {
  margin: clamp(30px, 5vw, 52px) 0 0;
}

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

/* ---- 联系渠道 ---- */
.page-contact .contact-channel-band {
  padding: clamp(36px, 5vw, 64px) 0;
}

.page-contact .channels {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-l);
  background: var(--night);
  color: var(--paper);
}

.page-contact .channels__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  pointer-events: none;
}

.page-contact .channels__inner {
  position: relative;
  z-index: 1;
  padding: clamp(26px, 4.5vw, 56px);
  display: grid;
  gap: clamp(26px, 4vw, 40px);
}

.page-contact .sec-index--light { color: var(--gold); }
.page-contact .h-sec--light { color: var(--paper); }
.page-contact .h-sub--light { color: var(--paper); }

.page-contact .chan-list {
  margin-top: clamp(20px, 3vw, 30px);
  display: grid;
  gap: 12px;
}

.page-contact .chan {
  border: 1px solid var(--line-night);
  background: rgba(244, 237, 224, 0.06);
  border-radius: var(--radius-pill);
  padding: 14px clamp(16px, 2.4vw, 26px);
}

.page-contact .chan__k {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-contact .chan__v {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.1vw, 24px);
  line-height: 1.3;
  color: var(--paper);
  letter-spacing: -0.01em;
  word-break: break-all;
}

.page-contact .channels__detail {
  display: grid;
  gap: 22px;
}

.page-contact .chan-detail {
  padding-left: 16px;
  border-left: 2px solid rgba(199, 154, 46, 0.5);
}

.page-contact .chan-detail p {
  margin: 7px 0 0;
  color: var(--paper-70);
  line-height: 1.8;
}

@media (min-width: 940px) {
  .page-contact .channels__inner {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: start;
  }
}

/* ---- 回复节奏 ---- */
.page-contact .reply-layout {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  gap: 26px;
}

.page-contact .reply-copy p {
  margin: 0 0 14px;
  max-width: 52ch;
  color: var(--ink-70);
}

.page-contact .reply-copy p:last-child {
  margin-bottom: 0;
}

.page-contact .reply-list {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  padding: 22px clamp(18px, 3vw, 28px);
}

.page-contact .reply-list__cap {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold-dark);
}

.page-contact .reply-list ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 9px;
}

.page-contact .reply-list li {
  color: var(--ink-70);
}

.page-contact .reply-foot {
  margin-top: clamp(22px, 3vw, 30px);
  font-size: 14px;
  color: var(--ink-55);
}

.page-contact .reply-foot a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (min-width: 880px) {
  .page-contact .reply-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: start;
  }
}

/* ---- 常见问题 ---- */
.page-contact .qa {
  margin-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--line);
}

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

.page-contact .qa__q {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 18px 46px 18px 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-contact .qa__q::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--gold-dark);
}

.page-contact .qa__item[open] .qa__q::after {
  content: "−";
}

.page-contact .qa__a {
  margin: 0;
  padding: 0 44px 22px 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-70);
}

/* ---- 收束 ---- */
.page-contact .contact-closing {
  background: var(--night-deep);
  color: var(--paper);
  padding-bottom: clamp(38px, 5vw, 60px);
}

.page-contact .closing {
  display: grid;
  gap: 24px;
}

.page-contact .closing__copy p {
  margin: 12px 0 0;
  max-width: 46ch;
  color: var(--paper-70);
  line-height: 1.8;
}

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

.page-contact .btn--ghost-light {
  color: var(--paper);
  border-color: rgba(244, 237, 224, 0.42);
}

.page-contact .coord {
  margin-top: clamp(30px, 5vw, 46px);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.page-contact .coord span {
  display: block;
  height: 10px;
  border-radius: var(--radius-pill);
  background: rgba(244, 237, 224, 0.14);
}

.page-contact .coord span:nth-child(2n) { background: rgba(199, 154, 46, 0.72); }
.page-contact .coord span:nth-child(3n) { background: rgba(46, 125, 116, 0.7); }
.page-contact .coord span:nth-child(5n) { background: rgba(224, 138, 46, 0.72); }

@media (min-width: 700px) {
  .page-contact .coord {
    grid-template-columns: repeat(8, 1fr);
  }
}

@media (min-width: 800px) {
  .page-contact .closing {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 44px;
  }
}

/* ---- 窄屏兜底 ---- */
@media (max-width: 560px) {
  .page-contact .qa__q {
    font-size: 17px;
    padding-right: 34px;
  }
  .page-contact .qa__a {
    padding-right: 12px;
  }
  .page-contact .flow__step {
    padding-top: 24px;
  }
}