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/* ============================================================
   solutions.css — 解决方案页专属样式
   ============================================================ */

/* ── Hero ── */
.solutions-hero {
  position: relative; padding: 96px 0; overflow: hidden;
}
.solutions-hero__bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #f8fafc 0%, #fff 50%, #f0fdf4 100%);
}
.solutions-hero__orb-1 {
  position: absolute; top: 80px; right: 80px;
  width: 384px; height: 384px;
  background: rgba(37,104,242,.08); border-radius: 50%; filter: blur(48px);
}
.solutions-hero__orb-2 {
  position: absolute; bottom: 80px; left: 80px;
  width: 384px; height: 384px;
  background: rgba(37,104,242,.08); border-radius: 50%; filter: blur(48px);
}
.solutions-hero__content {
  position: relative; z-index: 1;
  text-align: center; max-width: 768px; margin: 0 auto;
}
.solutions-hero__title {
  font-size: clamp(2rem,5vw,3rem);
  font-weight: 700; color: var(--color-text-primary);
  margin-bottom: 24px; line-height: 1.2;
}
.solutions-hero__subtitle {
  font-size: 1.125rem; color: var(--color-text-secondary);
}

/* ── Tab 导航 ── */
.solutions-tabs { padding: 80px 0 0; background: #fff; }
.solutions-tabs__nav {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 8px;
  max-width: 900px; margin: 0 auto 48px;
}
.solutions-tabs__btn {
  padding: 10px 24px; border-radius: 12px;
  border: 2px solid transparent;
  background: #f3f4f6; color: var(--color-text-secondary);
  font-size: .9375rem; font-weight: 500;
  cursor: pointer; transition: all .2s; white-space: nowrap;
}
.solutions-tabs__btn:hover { background: #e5e7eb; }
.solutions-tabs__btn.is-active {
  background: var(--color-accent); color: #fff; border-color: var(--color-accent);
}
.solutions-tabs__category-header {
  text-align: center; margin-bottom: 48px;
}
.solutions-tabs__category-header h2 {
  font-size: clamp(1.5rem,3vw,2rem);
  font-weight: 700; color: var(--color-text-primary); margin-bottom: 8px;
}
.solutions-tabs__category-header p {
  color: var(--color-text-secondary);
}
.solutions-panel { display: none; padding-bottom: 80px; }
.solutions-panel.is-active { display: block; }

/* ── 子类卡片网格 ── */
.solution-subcats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.solution-subcats--2 { grid-template-columns: repeat(2, 1fr); max-width: 640px; margin: 0 auto; }
.solution-subcats--4 { grid-template-columns: repeat(4, 1fr); }
.solution-subcat-card {
  background: var(--color-bg-subtle);
  border-radius: 20px; overflow: hidden;
  transition: all .3s; cursor: pointer; display: block; text-decoration: none; color: inherit;
}
.solution-subcat-card:hover {
  box-shadow: var(--shadow-lg); transform: translateY(-4px);
}
.solution-subcat-card__img {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #dbeafe 0%, #ede9fe 100%);
  display: flex; align-items: center; justify-content: center;
  font-size: .875rem; color: #9ca3af; overflow: hidden;
}
.solution-subcat-card__img img {
  width: 100%; height: 100%; object-fit: cover;
}
.solution-subcat-card__body { padding: 24px; }
.solution-subcat-card__icon-row {
  display: flex; align-items: center; gap: 12px; margin-bottom: 12px;
}
.solution-subcat-card__icon-wrap {
  width: 40px; height: 40px; border-radius: 10px;
  background: rgba(37,104,242,.08);
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.solution-subcat-card__icon-wrap svg,
.solution-subcat-card__icon-wrap img {
  width: 20px; height: 20px; color: var(--color-accent);
}
.solution-subcat-card__icon-wrap img {
  filter: brightness(0) saturate(100%) invert(27%) sepia(91%) saturate(2380%) hue-rotate(214deg) brightness(103%);
}
.solution-subcat-card__name {
  font-size: 1rem; font-weight: 700; color: var(--color-text-primary);
}
.solution-subcat-card__desc {
  font-size: .875rem; color: var(--color-text-secondary);
  line-height: 1.6; margin-bottom: 16px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.solution-subcat-card__link {
  display: flex; align-items: center; gap: 4px;
  font-size: .875rem; font-weight: 500; color: var(--color-accent);
}
.solution-subcat-card__link svg { width: 16px; height: 16px; transition: transform .2s; }
.solution-subcat-card:hover .solution-subcat-card__link svg { transform: translateX(4px); }

/* ── 详情内容区（痛点/产品/优势/案例） ── */
.solution-detail-block {
  background: #fff; border-radius: 20px; padding: 32px;
  border: 1px solid var(--color-border); margin-bottom: 24px;
}
.solution-detail-block__title {
  font-size: 1.25rem; font-weight: 700;
  color: var(--color-text-primary); margin-bottom: 24px;
  padding-bottom: 16px; border-bottom: 2px solid rgba(37,104,242,.1);
}
.solution-detail-block__grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}
.solution-pain-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.solution-pain-list li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .9375rem; color: var(--color-text-secondary);
}
.solution-pain-list li::before {
  content: ''; width: 6px; height: 6px; border-radius: 50%;
  background: #f87171; flex-shrink: 0; margin-top: 7px;
}
.solution-check-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.solution-check-list li {
  display: flex; align-items: flex-start; gap: 8px;
  font-size: .9375rem; color: var(--color-text-secondary);
}
.solution-check-list li svg {
  width: 16px; height: 16px; color: var(--color-accent);
  flex-shrink: 0; margin-top: 3px;
}
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.solution-tag {
  padding: 6px 14px; background: #f3f4f6;
  border-radius: 9999px; font-size: .875rem; color: var(--color-text-secondary);
}
.solution-cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px;
}
.solution-case {
  background: var(--color-bg-subtle); border-radius: 12px; padding: 16px;
}
.solution-case__client {
  font-weight: 600; color: var(--color-text-primary); font-size: .9375rem; margin-bottom: 6px;
}
.solution-case__result { font-size: .875rem; color: var(--color-accent); }

/* ── 方案详情页 ── */
.solution-detail-page-hero {
  position: relative; padding: 80px 0; overflow: hidden;
}
.solution-detail-page-hero__bg {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, #f8fafc 0%, #fff 50%, #f0fdf4 100%);
}

/* ── 响应式 ── */
@media (max-width: 1024px) {
  .solution-subcats--4 { grid-template-columns: repeat(2, 1fr); }
  .solution-subcats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .solutions-hero { padding: 64px 0; }
  .solution-subcats, .solution-subcats--4 { grid-template-columns: 1fr; }
  .solution-subcats--2 { grid-template-columns: 1fr; }
  .solution-detail-block__grid { grid-template-columns: 1fr; }
  .solution-cases-grid { grid-template-columns: 1fr; }
}

/* ── IoT 场景入口卡片 ── */
.iot-scene-card {
  display: flex; flex-direction: column; gap: 12px;
  background: #fff; border-radius: 20px; padding: 32px;
  border: 1px solid var(--color-border);
  transition: box-shadow .25s, transform .25s, border-color .25s;
  color: inherit;
}
.iot-scene-card:hover {
  box-shadow: 0 8px 32px rgba(37,104,242,.12);
  transform: translateY(-3px);
  border-color: var(--color-accent);
}
.iot-scene-card__icon {
  width: 56px; height: 56px; border-radius: 16px;
  background: rgba(37,104,242,.08); display: flex;
  align-items: center; justify-content: center;
  color: var(--color-accent); flex-shrink: 0;
}
.iot-scene-card__title {
  font-size: 1.125rem; font-weight: 700; color: var(--color-text-primary);
}
.iot-scene-card__sub {
  font-size: .875rem; font-weight: 500; color: var(--color-accent);
}
.iot-scene-card__desc {
  font-size: .875rem; color: var(--color-text-secondary);
  line-height: 1.7; margin: 0; flex: 1;
}
.iot-scene-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.iot-scene-card__arrow {
  font-size: .875rem; font-weight: 500; color: var(--color-accent);
  margin-top: 4px;
}

/* ── 案例卡片（子页面用） ── */
.solution-case-card {
  background: var(--color-bg-subtle); border-radius: 16px; padding: 24px;
  border: 1px solid var(--color-border); transition: box-shadow .2s;
}
.solution-case-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,.08); }
.solution-case-card__header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 10px; flex-wrap: wrap;
}
.solution-case-card__client {
  font-weight: 700; color: var(--color-text-primary); font-size: 1rem;
}
.solution-case-card__metric {
  font-size: .75rem; font-weight: 600; color: var(--color-accent);
  background: rgba(37,104,242,.08); padding: 3px 10px; border-radius: 9999px;
  white-space: nowrap;
}
.solution-case-card__result {
  font-size: .875rem; color: var(--color-accent); font-weight: 500; margin-bottom: 8px;
}
.solution-case-card__desc {
  font-size: .875rem; color: var(--color-text-secondary); line-height: 1.6; margin: 0;
}

/* ══════════════════════════════════════════════════════
   内联样式子页面（cockpit / marketing 等）通用手机适配
   使用方式：给 <main> 加 class="page-content solution-inline-page"
   ══════════════════════════════════════════════════════ */

/* Hero 包裹层 — 高度自适应 */
.solution-inline-page .inline-hero-wrap { height: auto !important; }
.solution-inline-page .inline-hero-wrap > div {
  position: static !important;
  padding: 48px 0 !important;
}
.solution-inline-page .inline-hero-wrap .container { height: auto !important; }

/* 产品左右行 — 手机下竖排 */
.solution-inline-page .inline-product-row {
  display: flex; align-items: center; gap: 48px; flex-wrap: wrap;
}
.solution-inline-page .inline-product-row--reverse {
  flex-direction: row-reverse;
}

/* 痛点 / 优势 / 案例网格 */
.solution-inline-page .inline-pain-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.solution-inline-page .inline-advantage-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
}
.solution-inline-page .inline-partner-grid {
  display: grid; gap: 24px;
}
.solution-inline-page .inline-case-grid {
  display: grid; gap: 20px;
}

@media (max-width: 768px) {
  /* Hero 高度自适应 */
  .solution-inline-page .inline-hero-wrap { height: auto !important; }
  .solution-inline-page .inline-hero-wrap > div {
    position: static !important; padding: 48px 0 !important;
  }
  .solution-inline-page .inline-hero-wrap .container { height: auto !important; }

  /* Section padding 缩减 */
  .solution-inline-page section[style*="padding:96px 0"] {
    padding-top: 48px !important; padding-bottom: 48px !important;
  }
  .solution-inline-page section[style*="padding:64px 0"] {
    padding-top: 40px !important; padding-bottom: 40px !important;
  }
  .solution-inline-page section[style*="padding:80px 0"] {
    padding-top: 48px !important; padding-bottom: 48px !important;
  }

  /* 产品行：竖排 */
  .solution-inline-page .inline-product-row,
  .solution-inline-page .inline-product-row--reverse {
    flex-direction: column !important; gap: 24px !important;
  }
  .solution-inline-page .inline-product-row > div {
    min-width: 0 !important; flex: unset !important; width: 100% !important;
  }
  /* 产品组间距 */
  .solution-inline-page div[style*="gap:96px"] { gap: 48px !important; }

  /* 痛点：4列 → 2列 */
  .solution-inline-page .inline-pain-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  /* 优势：3列 → 1列 */
  .solution-inline-page .inline-advantage-grid {
    grid-template-columns: 1fr !important;
  }
  /* 合作车企/Partner：5列 → 2列 */
  .solution-inline-page .inline-partner-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  /* 案例：3列/2列 → 1列 */
  .solution-inline-page .inline-case-grid {
    grid-template-columns: 1fr !important;
  }

  /* 标题下方间距收紧 */
  .solution-inline-page div[style*="margin-bottom:64px"] {
    margin-bottom: 36px !important;
  }
}

@media (max-width: 480px) {
  /* 极小屏：痛点 → 1列 */
  .solution-inline-page .inline-pain-grid {
    grid-template-columns: 1fr !important;
  }
  /* 合作车企 → 1列 */
  .solution-inline-page .inline-partner-grid {
    grid-template-columns: 1fr !important;
  }
}

/* ── 智慧座舱：合作车企 ── */
.cockpit-partner-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}
.cockpit-partner-item {
  background: #f8fafc;
  border-radius: 12px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #f1f5f9;
}
.cockpit-partner-item span {
  color: #94a3b8;
  font-size: .875rem;
  font-weight: 500;
}
.cockpit-partner-note {
  background: #f8fafc;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid #f1f5f9;
  text-align: center;
}
.cockpit-partner-note p {
  color: #475569;
  font-size: .875rem;
  line-height: 1.75;
  margin: 0;
}

/* ── 智慧座舱：合作客户网格 ── */
.cockpit-case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 1024px) {
  .cockpit-partner-grid { grid-template-columns: repeat(3, 1fr); }
  .cockpit-case-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .cockpit-partner-grid { grid-template-columns: repeat(2, 1fr); }
  .cockpit-case-grid { grid-template-columns: 1fr; }
}

/* ── 移动端补充 ── */
@media (max-width: 768px) {
  .solutions-hero__orb-1,
  .solutions-hero__orb-2 { display: none; }
}
@media (max-width: 480px) {
  .solutions-hero { padding: 48px 0; }
  .solution-subcat-card { padding: 16px; }
  .solution-subcat-card__title { font-size: .9375rem; }
}