.page-contact {
  --contact-line-soft: rgba(232, 240, 233, 0.14);
  --contact-line-dash: rgba(232, 240, 233, 0.24);
  background:
    radial-gradient(120% 70% at 82% 0%, rgba(11, 27, 51, 0.92), transparent 62%),
    var(--c-ink);
  color: var(--c-mist);
  font-family: var(--f-body);
  overflow-x: hidden;
}

.page-contact .breadcrumb {
  padding-top: clamp(16px, 3vw, 26px);
}

.page-contact h2 {
  font-family: var(--f-heading);
}

.page-contact .eyebrow {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ice);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  padding: clamp(22px, 4vw, 40px) 0 clamp(40px, 6vw, 76px);
}

.page-contact .contact-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: start;
}

.page-contact .contact-hero__title {
  margin: 12px 0 0;
  font-family: var(--f-heading);
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--c-paper);
}

.page-contact .contact-hero__text {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(232, 240, 233, 0.78);
}

.page-contact .track-index {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--contact-line-dash);
}

.page-contact .track-index__item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--contact-line-soft);
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-contact .track-index__item:hover,
.page-contact .track-index__item:focus-within {
  background: rgba(200, 255, 90, 0.05);
  border-bottom-color: var(--c-lime);
}

.page-contact .track-index__no {
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--c-sage);
}

.page-contact .track-index__name {
  flex: 0 0 auto;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--c-paper);
}

.page-contact .track-index__tag {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  text-align: right;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--c-sage);
}

/* ---------- 联系卡 ---------- */
.page-contact .contact-card {
  background: var(--c-navy);
  border: 1px solid var(--contact-line-dash);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 26px 60px -34px rgba(0, 0, 0, 0.95);
}

.page-contact .contact-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--c-ink-2);
}

.page-contact .contact-card__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.72;
}

.page-contact .contact-card__badge {
  position: absolute;
  left: 14px;
  bottom: 14px;
  padding: 5px 9px;
  border-radius: 2px;
  background: var(--c-lime);
  color: var(--c-ink);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  font-weight: 600;
}

.page-contact .contact-card__body {
  padding: 20px 18px 22px;
}

.page-contact .contact-card__title {
  margin: 0 0 12px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-ice);
}

.page-contact .contact-list {
  margin: 0;
  padding: 0;
}

.page-contact .contact-list__row {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-top: 1px dashed var(--contact-line-dash);
}

.page-contact .contact-list__key {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-sage);
}

.page-contact .contact-list__val {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--c-paper);
  word-break: break-word;
}

.page-contact .contact-list__val--text {
  font-family: var(--f-body);
  font-size: 14.5px;
}

.page-contact .contact-card__note {
  margin: 16px 0 0;
  padding-left: 10px;
  border-left: 2px solid var(--c-lime);
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(232, 240, 233, 0.62);
}

/* ---------- 合作方向 ---------- */
.page-contact .contact-tracks {
  padding: clamp(40px, 6vw, 76px) 0;
  background: var(--c-navy);
  border-top: 1px solid var(--contact-line-dash);
  border-bottom: 1px solid var(--contact-line-dash);
}

.page-contact .section-head {
  max-width: 62ch;
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-size: clamp(23px, 3.4vw, 33px);
  line-height: 1.2;
  color: var(--c-paper);
}

.page-contact .section-head > p:not(.eyebrow) {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(232, 240, 233, 0.72);
}

.page-contact .track-grid {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--contact-line-soft);
  border: 1px solid var(--contact-line-soft);
}

.page-contact .track-card {
  background: var(--c-ink);
  padding: 20px 18px 22px;
  border-top: 2px solid var(--track-accent, var(--c-sage));
  transition: background-color 180ms var(--ease);
}

.page-contact .track-card:hover {
  background: var(--c-ink-2);
}

.page-contact .track-card--a { --track-accent: var(--c-lime); }
.page-contact .track-card--b { --track-accent: var(--c-ice); }
.page-contact .track-card--c { --track-accent: var(--c-orange); }
.page-contact .track-card--d { --track-accent: var(--c-sage); }

.page-contact .track-card__no {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--track-accent, var(--c-sage));
}

.page-contact .track-card h3 {
  margin: 7px 0 0;
  font-family: var(--f-heading);
  font-size: 18.5px;
  line-height: 1.35;
  color: var(--c-paper);
}

.page-contact .track-card > p:not(.track-card__no):not(.track-card__fit) {
  margin: 9px 0 0;
  font-size: 13.8px;
  line-height: 1.8;
  color: rgba(232, 240, 233, 0.76);
}

.page-contact .track-card__fit {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--contact-line-dash);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-sage);
}

.page-contact .track-card__fit strong {
  color: var(--c-mist);
  font-weight: 600;
}

/* ---------- 流程 ---------- */
.page-contact .contact-flow {
  padding: clamp(40px, 6vw, 76px) 0;
  background: var(--c-violet);
}

.page-contact .flow-figure {
  margin: clamp(24px, 4vw, 34px) 0 0;
  border: 1px solid var(--contact-line-dash);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--c-ink);
}

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

.page-contact .flow {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-contact .flow__step {
  position: relative;
  padding: 0 0 0 26px;
  border-left: 1px solid var(--contact-line-dash);
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-lime);
  box-shadow: 0 0 0 3px rgba(200, 255, 90, 0.16);
}

.page-contact .flow__no {
  display: block;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-lime);
}

.page-contact .flow__step h3 {
  margin: 6px 0 0;
  font-family: var(--f-heading);
  font-size: 17px;
  color: var(--c-paper);
}

.page-contact .flow__step p {
  margin: 7px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(232, 240, 233, 0.74);
}

.page-contact .flow-response {
  margin-top: clamp(24px, 4vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 18px;
  border: 1px dashed var(--contact-line-soft);
  background: rgba(200, 255, 90, 0.05);
}

.page-contact .flow-response__key {
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-lime);
}

.page-contact .flow-response__val {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(232, 240, 233, 0.84);
}

/* ---------- 提交材料 ---------- */
.page-contact .contact-brief {
  padding: clamp(40px, 6vw, 76px) 0;
  background: var(--c-wine);
}

.page-contact .contact-brief__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 42px);
  align-items: start;
}

.page-contact .contact-brief h2 {
  margin: 10px 0 0;
  font-size: clamp(23px, 3.4vw, 32px);
  line-height: 1.2;
  color: var(--c-paper);
}

.page-contact .contact-brief__text {
  margin: 12px 0 0;
  max-width: 34ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 237, 216, 0.76);
}

.page-contact .brief-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-contact .brief-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  padding: 12px 0;
  border-top: 1px solid rgba(245, 237, 216, 0.2);
  font-size: 13.8px;
  line-height: 1.8;
  color: rgba(245, 237, 216, 0.86);
}

.page-contact .brief-list li::before {
  content: "▸";
  font-size: 12px;
  line-height: 2;
  color: var(--c-orange);
}

.page-contact .brief-list strong {
  color: var(--c-paper);
  font-weight: 700;
}

/* ---------- 用户反馈 ---------- */
.page-contact .contact-feedback {
  padding: clamp(40px, 6vw, 76px) 0;
  background: var(--c-ink-2);
}

.page-contact .faq {
  margin-top: clamp(22px, 3vw, 30px);
  border-top: 1px solid var(--contact-line-dash);
}

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

.page-contact .faq summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 15px 34px 15px 2px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-mist);
  transition: color 160ms var(--ease);
}

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

.page-contact .faq summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 16px;
  color: var(--c-lime);
}

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

.page-contact .faq summary:hover {
  color: var(--c-lime);
}

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

.page-contact .faq p {
  margin: 0 0 16px;
  padding-right: 14px;
  font-size: 13.8px;
  line-height: 1.85;
  color: rgba(232, 240, 233, 0.74);
}

.page-contact .faq p a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 231, 212, 0.45);
}

.page-contact .faq p a:hover {
  color: var(--c-lime);
  border-bottom-color: var(--c-lime);
}

.page-contact .faq p a:focus-visible {
  outline: 2px solid var(--c-ice);
  outline-offset: 2px;
}

/* ---------- 下一步 ---------- */
.page-contact .contact-next {
  padding: clamp(36px, 5vw, 64px) 0 clamp(48px, 7vw, 88px);
  background: var(--c-ink);
}

.page-contact .contact-next h2 {
  margin: 10px 0 0;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.25;
  color: var(--c-paper);
}

.page-contact .next-links {
  margin-top: clamp(20px, 3vw, 28px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--contact-line-soft);
  border: 1px solid var(--contact-line-soft);
}

.page-contact .next-links a {
  display: block;
  padding: 16px 18px;
  background: var(--c-ink);
  color: var(--c-mist);
  font-size: 13.8px;
  line-height: 1.7;
  text-decoration: none;
  transition: background-color 180ms var(--ease), color 180ms var(--ease);
}

.page-contact .next-links a span {
  display: block;
  margin-bottom: 5px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--c-sage);
}

.page-contact .next-links a:hover {
  background: var(--c-ink-2);
  color: var(--c-lime);
}

.page-contact .next-links a:focus-visible {
  outline: 2px solid var(--c-ice);
  outline-offset: -2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-contact .track-index__name {
    min-width: 6.2em;
  }

  .page-contact .flow-response {
    grid-template-columns: auto 1fr;
    align-items: baseline;
    gap: 18px;
  }

  .page-contact .next-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 760px) {
  .page-contact .track-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-contact .contact-brief__grid {
    grid-template-columns: 5fr 7fr;
  }
}

@media (min-width: 860px) {
  .page-contact .contact-hero__grid {
    grid-template-columns: 1.12fr 0.88fr;
  }

  .page-contact .flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
  }

  .page-contact .flow__step {
    padding: 28px 20px 0;
    border-left: 0;
    border-top: 1px solid var(--contact-line-dash);
  }

  .page-contact .flow__step::before {
    left: 20px;
    top: -4.5px;
  }
}

@media (min-width: 1080px) {
  .page-contact .next-links {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .track-index__item,
  .page-contact .track-card,
  .page-contact .faq summary,
  .page-contact .next-links a {
    transition: none;
  }
}