.page-contact {
  --ct-col: 340px;
  --ct-gap: clamp(18px, 3vw, 40px);
}

.page-contact img {
  max-width: 100%;
  height: auto;
}

.page-contact .band {
  padding: clamp(42px, 6vw, 80px) 0;
}

.page-contact .band__head {
  max-width: 720px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-contact .band__title,
.page-contact .band__head h2 {
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 10px 0 12px;
  color: var(--text);
}

.page-contact .band__desc {
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  padding: clamp(20px, 3vw, 34px) 0 clamp(34px, 5vw, 62px);
  overflow: hidden;
}

.page-contact .contact-hero::after {
  content: "";
  position: absolute;
  top: -180px;
  right: -140px;
  width: 460px;
  height: 460px;
  background: radial-gradient(circle, rgba(47, 243, 214, 0.13), transparent 68%);
  pointer-events: none;
  z-index: 0;
}

.page-contact .hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-contact .hero-lead h1 {
  font-size: clamp(2.05rem, 1.15rem + 3.5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 12px 0 18px;
  color: var(--text);
}

.page-contact .hero-lead .lede {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.78;
  color: var(--muted);
  margin: 0;
  max-width: 46ch;
}

.page-contact .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-contact .hero-meta {
  list-style: none;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
}

.page-contact .hero-meta li {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-contact .hero-meta b {
  display: block;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 4px;
}

.page-contact .hero-panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(14, 31, 56, 0.96), rgba(7, 17, 32, 0.88));
  box-shadow: var(--shadow-1);
  padding: clamp(20px, 3vw, 28px);
  overflow: hidden;
}

.page-contact .hero-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--cyan) 62%, transparent);
}

.page-contact .hero-panel__title {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-contact .need-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
}

.page-contact .need-list li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-contact .need-list li:last-child {
  border-bottom: 0;
}

.page-contact .need-list__idx {
  font-size: 12px;
  color: var(--orange);
  padding-top: 4px;
  letter-spacing: 0.08em;
}

.page-contact .need-list__role {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.page-contact .need-list__desc {
  display: block;
  font-size: 13px;
  line-height: 1.62;
  color: var(--muted);
  margin-top: 4px;
}

.page-contact .hero-panel__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 流程 ---------- */
.page-contact .flow {
  position: relative;
  margin-top: clamp(28px, 4vw, 46px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(14, 31, 56, 0.5);
  overflow: hidden;
}

.page-contact .flow__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: saturate(0.75);
  pointer-events: none;
}

.page-contact .flow__inner {
  position: relative;
  z-index: 1;
  padding: clamp(34px, 5vw, 62px) 0;
}

.page-contact .flow__head {
  max-width: 720px;
}

.page-contact .flow__head h2 {
  font-size: var(--fs-h2);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin: 10px 0 12px;
  color: var(--text);
}

.page-contact .flow__line {
  height: 1px;
  margin: clamp(20px, 3vw, 30px) 0 clamp(20px, 3vw, 28px);
  background: linear-gradient(90deg, var(--orange), rgba(47, 243, 214, 0.7) 55%, transparent);
  opacity: 0.6;
}

.page-contact .flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: flowstep;
}

.page-contact .flow__step {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(7, 17, 32, 0.82);
  padding: 20px 16px 16px;
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-contact .flow__step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 16px;
  width: 34px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--orange);
}

.page-contact .flow__step:hover,
.page-contact .flow__step:focus-within {
  border-color: rgba(255, 106, 43, 0.55);
  transform: translateY(-2px);
}

.page-contact .flow__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
  margin-bottom: 10px;
}

.page-contact .flow__title {
  font-size: var(--fs-h3);
  line-height: 1.35;
  margin: 0 0 10px;
  color: var(--text);
}

.page-contact .flow__desc {
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  margin: 0;
}

.page-contact .flow__mat {
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--muted);
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
}

.page-contact .flow__mat-label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border-radius: 4px;
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--amber);
  background: rgba(255, 194, 75, 0.12);
}

/* ---------- 合作基础数据 ---------- */
.page-contact .basis {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-contact .basis__cell {
  background: rgba(14, 31, 56, 0.78);
  padding: 22px 18px;
}

.page-contact .basis__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--cyan);
  margin-bottom: 8px;
}

.page-contact .basis__cell:nth-child(2) .basis__num {
  color: var(--orange);
}

.page-contact .basis__cell:nth-child(4) .basis__num {
  color: var(--green);
}

.page-contact .basis__cap {
  display: block;
  font-size: 13px;
  line-height: 1.68;
  color: var(--muted);
}

/* ---------- 方向 + 联系面板 ---------- */
.page-contact .contact-body {
  display: grid;
  gap: clamp(28px, 4vw, 40px);
  align-items: start;
}

.page-contact .dir-grid {
  display: grid;
  gap: 16px;
}

.page-contact .dir-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(168deg, rgba(16, 40, 58, 0.62), rgba(7, 17, 32, 0.92));
  padding: 20px;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-contact .dir-card[open],
.page-contact .dir-card:hover {
  border-color: rgba(47, 243, 214, 0.38);
}

.page-contact .dir-card > summary {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) 16px;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  list-style: none;
}

.page-contact .dir-card > summary::-webkit-details-marker {
  display: none;
}

.page-contact .dir-card__icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 9px;
  border: 1px solid var(--line);
  color: var(--cyan);
  background: rgba(47, 243, 214, 0.06);
}

.page-contact .dir-card__title {
  font-size: var(--fs-h3);
  line-height: 1.38;
  margin: 0;
  color: var(--text);
}

.page-contact .dir-card__caret {
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
  justify-self: end;
}

.page-contact .dir-card[open] .dir-card__caret {
  transform: rotate(225deg);
  border-color: var(--cyan);
}

.page-contact .dir-card__desc {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.74;
  color: var(--muted);
}

.page-contact .dir-card__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 16px 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 10px;
}

.page-contact .dir-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--text);
}

.page-contact .dir-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
}

.page-contact .contact-panel {
  border: 1px solid rgba(47, 243, 214, 0.4);
  border-radius: var(--radius-lg);
  background: linear-gradient(172deg, rgba(14, 31, 56, 0.98), rgba(7, 17, 32, 0.94));
  box-shadow: 0 26px 50px -38px rgba(0, 0, 0, 0.95), 0 0 0 4px rgba(47, 243, 214, 0.04);
  padding: clamp(22px, 3vw, 28px);
}

.page-contact .panel-title {
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--text);
}

.page-contact .panel-sub {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .c-list {
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-contact .c-item {
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-contact .c-item__label {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 6px;
}

.page-contact .c-item__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  word-break: break-word;
}

.page-contact .c-item__value--mono {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-contact .c-item:nth-child(3) .c-item__value--mono {
  color: var(--text);
  font-size: 13px;
  letter-spacing: 0.02em;
}

.page-contact .panel-note {
  margin: 16px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .panel-links {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.page-contact .panel-links a {
  font-size: 13.5px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 243, 214, 0.28);
  padding-bottom: 2px;
  justify-self: start;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-contact .panel-links a:hover,
.page-contact .panel-links a:focus-visible {
  color: var(--orange);
  border-color: rgba(255, 106, 43, 0.5);
}

/* ---------- 问答 ---------- */
.page-contact .faq-list {
  display: grid;
  gap: 10px;
  max-width: 880px;
}

.page-contact .faq {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 31, 56, 0.52);
  padding: 0 20px;
  transition: border-color 0.22s var(--ease);
}

.page-contact .faq[open] {
  border-color: rgba(47, 243, 214, 0.34);
}

.page-contact .faq > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 17px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-contact .faq__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-contact .faq > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
}

.page-contact .faq[open] > summary::after {
  content: "–";
  color: var(--orange);
}

.page-contact .faq__body {
  margin: 0;
  padding: 0 0 20px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 68ch;
}

/* ---------- 尾部 ---------- */
.page-contact .outro {
  border-top: 1px solid var(--line);
  padding-bottom: clamp(52px, 7vw, 96px);
}

.page-contact .outro__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
}

.page-contact .outro__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 520px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-contact .outro__text h2 {
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 10px 0 16px;
  color: var(--text);
}

.page-contact .outro__text p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  margin: 0 0 14px;
  max-width: 56ch;
}

.page-contact .outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-contact .hero-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

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

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

@media (min-width: 820px) {
  .page-contact .flow__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
  }

  .page-contact .flow__step {
    padding: 22px 16px 18px;
  }
}

@media (min-width: 900px) {
  .page-contact .hero-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
    gap: clamp(32px, 4.5vw, 64px);
  }

  .page-contact .outro__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-contact .contact-body {
    grid-template-columns: minmax(0, 1fr) var(--ct-col);
  }

  .page-contact .contact-panel {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .flow__step,
  .page-contact .dir-card,
  .page-contact .dir-card__caret,
  .page-contact .faq,
  .page-contact .panel-links a {
    transition: none;
  }

  .page-contact .flow__step:hover,
  .page-contact .flow__step:focus-within {
    transform: none;
  }
}