/* ===== 商务合作页 · page-contact ===== */

.page-contact .breadcrumb {
  padding: 20px 0 4px;
}

/* ---- 首屏 ---- */
.page-contact .contact-hero {
  position: relative;
  padding: 8px 0 60px;
  background:
    radial-gradient(680px 340px at 92% -4%, rgba(184, 255, 61, 0.13), transparent 70%),
    radial-gradient(560px 320px at 0% 104%, rgba(42, 84, 128, 0.42), transparent 72%);
}

.page-contact .contact-hero__inner {
  display: grid;
  gap: 32px;
}

.page-contact .contact-hero__copy {
  max-width: 640px;
}

.page-contact .contact-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 6.2vw, 46px);
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ice);
}

.page-contact .contact-hero .lede {
  margin: 18px 0 0;
  max-width: 58ch;
  color: var(--mist);
}

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

.page-contact .contact-hero__media {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--line-blue);
}

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

/* ---- 章节通用 ---- */
.page-contact .section-head {
  max-width: 720px;
}

.page-contact .section-number {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--lime);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-contact .section-number {
    color: transparent;
    -webkit-text-stroke: 1.4px var(--lime);
  }
}

.page-contact .section-head h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 4.2vw, 32px);
  font-weight: 700;
  line-height: 1.28;
  color: var(--ice);
}

.page-contact .section-head p {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---- 01 合作方向 + 联系卡 ---- */
.page-contact .contact-models {
  padding: 64px 0 8px;
}

.page-contact .contact-split {
  display: grid;
  gap: 32px;
}

.page-contact .model-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.page-contact .model-card {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 18px;
  border-radius: var(--radius-card);
}

.page-contact .model-card__num {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

@supports (-webkit-text-stroke: 1px red) {
  .page-contact .model-card__num {
    color: transparent;
    -webkit-text-stroke: 1.5px var(--lime);
  }
}

.page-contact .model-card h3 {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .model-card__for {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  line-height: 1.6;
  color: var(--lime-soft);
}

.page-contact .model-card__out {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .model-card__more {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid rgba(42, 84, 128, 0.55);
}

.page-contact .model-card__more summary {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--lime-soft);
  transition: color 180ms ease-out;
}

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

.page-contact .model-card__more summary::before {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid currentColor;
  font-size: 13px;
  line-height: 1;
}

.page-contact .model-card__more[open] summary::before {
  content: "−";
}

.page-contact .model-card__more summary:hover,
.page-contact .model-card__more summary:focus-visible {
  color: var(--ice);
}

.page-contact .model-card__more ul {
  margin: 12px 0 0;
  padding-left: 16px;
  display: grid;
  gap: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-contact .model-card__more li::marker {
  color: var(--lime);
}

/* 联系信息玻璃卡 */
.page-contact .contact-card {
  padding: 24px 20px;
  border-radius: var(--radius-glass);
  border: 1px solid var(--glass-border);
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.page-contact .contact-card__title {
  margin: 10px 0 0;
  font-size: clamp(20px, 3.6vw, 24px);
  font-weight: 700;
  line-height: 1.32;
  color: var(--ice);
}

.page-contact .contact-card__list {
  margin: 22px 0 0;
  display: grid;
  gap: 16px;
}

.page-contact .contact-card__row {
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(42, 84, 128, 0.5);
}

.page-contact .contact-card__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-contact .contact-card dt {
  font-family: var(--font-condensed);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-contact .contact-card dd {
  margin: 6px 0 0;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--ice);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-contact .contact-card__hint {
  display: block;
  margin-top: 6px;
  font-family: var(--font-sans);
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-contact .contact-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-contact .contact-card__actions .btn {
  flex: 1 1 auto;
  text-align: center;
}

/* ---- 02 推进流程 ---- */
.page-contact .contact-flow {
  padding: 64px 0 8px;
}

.page-contact .flow-layout {
  display: grid;
  gap: 32px;
  margin-top: 30px;
}

.page-contact .flow__list {
  position: relative;
  margin: 0;
  padding: 0 0 0 30px;
  list-style: none;
  display: grid;
  gap: 28px;
}

.page-contact .flow__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 6px;
  border-left: 2px dashed var(--line-blue);
}

.page-contact .flow__step {
  position: relative;
}

.page-contact .flow__dot {
  position: absolute;
  left: -30px;
  top: 4px;
  box-sizing: border-box;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--night);
  border: 2px solid var(--line-blue);
  transition: background-color 180ms ease-out, border-color 180ms ease-out;
}

.page-contact .flow__step:first-child .flow__dot {
  background: var(--signal);
  border-color: var(--signal);
}

.page-contact .flow__step:hover .flow__dot {
  background: var(--lime);
  border-color: var(--lime);
}

.page-contact .flow__step h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  color: var(--ice);
}

.page-contact .flow__step p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-contact .flow__time {
  display: inline-block;
  margin-top: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(184, 255, 61, 0.28);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--lime-soft);
  transition: border-color 180ms ease-out, background-color 180ms ease-out, color 180ms ease-out;
}

.page-contact .flow__step:hover .flow__time,
.page-contact .flow__step:focus-within .flow__time {
  border-color: var(--lime);
  background: rgba(184, 255, 61, 0.12);
  color: var(--ice);
}

.page-contact .contact-flow__figure {
  margin: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--line-blue);
  background: var(--panel);
}

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

.page-contact .contact-flow__figure .media__caption {
  position: static;
  padding: 12px 16px 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---- 03 数据问题材料 ---- */
.page-contact .contact-materials {
  padding: 64px 0 8px;
}

.page-contact .spec-list {
  margin: 28px 0 0;
  border-top: 1px solid var(--line-blue);
}

.page-contact .spec-list__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-blue);
}

.page-contact .spec-list dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime-soft);
}

.page-contact .spec-list dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-materials__note {
  margin: 24px 0 0;
  padding: 16px 18px;
  border-left: 3px solid var(--lime);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  background: rgba(16, 38, 63, 0.72);
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---- 04 响应节奏 ---- */
.page-contact .contact-rhythm {
  padding: 64px 0 80px;
}

.page-contact .rhythm {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  max-width: 860px;
  border: 1px solid var(--line-blue);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: rgba(5, 16, 29, 0.5);
}

.page-contact .rhythm__item {
  padding: 20px 18px;
  border-bottom: 1px solid rgba(42, 84, 128, 0.5);
}

.page-contact .rhythm__item:last-child {
  border-bottom: 0;
}

.page-contact .rhythm__num {
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-contact .rhythm__unit {
  margin-left: 6px;
  font-family: var(--font-condensed);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-contact .rhythm__item p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-contact .contact-rhythm__note {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-contact .contact-rhythm__note a {
  color: var(--lime-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-contact .contact-rhythm__note a:hover {
  color: var(--lime);
}

/* ---- 平板 ---- */
@media (min-width: 720px) {
  .page-contact .contact-hero {
    padding-bottom: 72px;
  }

  .page-contact .contact-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    gap: 40px;
    align-items: center;
  }

  .page-contact .model-card {
    grid-template-columns: 68px minmax(0, 1fr);
    gap: 18px;
    padding: 24px 22px;
  }

  .page-contact .model-card__num {
    font-size: 46px;
  }

  .page-contact .spec-list__row {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }

  .page-contact .contact-card {
    padding: 28px 24px;
  }

  .page-contact .contact-card__actions .btn {
    flex: 0 1 auto;
  }

  .page-contact .rhythm__item {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
    padding: 22px 22px;
  }

  .page-contact .rhythm__item p {
    margin: 0;
  }
}

/* ---- 桌面 ---- */
@media (min-width: 960px) {
  .page-contact .contact-models {
    padding-top: 80px;
  }

  .page-contact .contact-split {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .flow-layout {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 48px;
    align-items: start;
  }

  .page-contact .contact-flow,
  .page-contact .contact-materials,
  .page-contact .contact-rhythm {
    padding-top: 80px;
  }

  .page-contact .contact-rhythm {
    padding-bottom: 96px;
  }
}