/**
 * 车载投屏 application-detail?module=invehicle 落地页
 * 主色与导航统一：var(--primary) #1a315e、var(--primary-light) #2c5282（见 style.css）
 */
html.iv-smooth-scroll {
  scroll-behavior: smooth;
}

:root {
  /* 与 .header.header-solid / .nav-dropdown 同源 */
  --iv-primary: var(--primary-light, #2c5282);
  --iv-bg: #ffffff;
  --iv-text: #1f2937;
  --iv-muted: #6b7280;
  --iv-surface: #f3f4f6;
  --iv-blue-950: var(--primary, #1a315e);
  --iv-blue-900: #22385c;
  --iv-primary-rgb: 44, 82, 130;
  --iv-accent-line-rgb: 142, 172, 210;
  --iv-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --iv-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --iv-radius: 12px;
  --iv-transition: 300ms ease-in-out;
  --iv-container: 72rem;
}

body.app-detail-invehicle.page-application-detail {
  font-family: 'Inter', 'Noto Sans SC', system-ui, sans-serif;
  color: var(--iv-text);
}

body.app-detail-invehicle .site-hero-banner {
  display: none;
}

body.app-detail-invehicle .app-detail-section {
  padding: 0;
  background: var(--iv-bg);
}

body.app-detail-invehicle .app-detail-section > .container {
  max-width: none;
  padding: 0;
}

body.app-detail-invehicle .app-detail-card {
  max-width: none;
  margin: 0;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}

body.app-detail-invehicle #appDetailTitle {
  display: none !important;
}

.iv-landing {
  width: 100%;
  overflow-x: hidden;
}

.iv-container {
  width: 100%;
  max-width: var(--iv-container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
}

@media (min-width: 1024px) {
  .iv-container {
    padding-left: 32px;
    padding-right: 32px;
  }
}

/* --- Hero --- */
.iv-hero {
  position: relative;
  min-height: 420px;
  padding: 48px 0 56px;
  /* 纯海军蓝底 + 无浅色尾：避免浅色渐变像白色蒙版透出 */
  background: linear-gradient(
    180deg,
    var(--iv-blue-950) 0%,
    var(--iv-blue-900) 45%,
    #1a3355 100%
  );
  overflow: hidden;
}

.iv-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 1;
  /* 略压高光，无整层半透明，不再与浅色底叠出灰白蒙版 */
  filter: brightness(0.72) contrast(1.15) saturate(1.08);
  z-index: 0;
}

.iv-hero__inner {
  position: relative;
  z-index: 1;
}

.iv-hero__badge {
  display: inline-block;
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(var(--iv-primary-rgb), 0.28);
  border: 1px solid rgba(var(--iv-accent-line-rgb), 0.45);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.iv-hero__title {
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: clamp(2.25rem, 6vw, 4rem);
  line-height: 1.15;
  margin: 0 0 16px;
  background: linear-gradient(
    135deg,
    #c5d8eb 0%,
    var(--iv-primary) 42%,
    #9eb8d4 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 0 22px rgba(var(--iv-primary-rgb), 0.45));
}

.iv-hero__subtitle {
  font-family: 'Inter', 'Noto Sans SC', sans-serif;
  font-weight: 400;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.88);
  max-width: 36rem;
  margin: 0 0 28px;
}

.iv-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.iv-hero__chip {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  color: #fff;
  background: rgba(var(--iv-primary-rgb), 0.38);
  border: 1px solid rgba(var(--iv-accent-line-rgb), 0.5);
  padding: 10px 18px;
  border-radius: var(--iv-radius);
  backdrop-filter: blur(8px);
  transition: box-shadow var(--iv-transition), transform var(--iv-transition);
}

.iv-hero__chip:hover {
  box-shadow: 0 0 18px rgba(var(--iv-primary-rgb), 0.4);
  transform: translateY(-2px);
}

/* --- Section common --- */
.iv-section {
  padding: 56px 0;
}

.iv-section--white {
  background: var(--iv-bg);
}

.iv-section--gray {
  background: var(--iv-surface);
}

.iv-section__title {
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  color: var(--iv-text);
  margin: 0 0 8px;
  text-align: center;
}

.iv-section__lead {
  font-family: 'Inter', sans-serif;
  text-align: center;
  color: var(--iv-muted);
  max-width: 42rem;
  margin: 0 auto 40px;
  font-size: 1rem;
  line-height: 1.6;
}

/* --- Overview 2 cols --- */
.iv-grid-2 {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .iv-grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.iv-card {
  background: var(--iv-bg);
  border: 1px solid #e5e7eb;
  border-radius: var(--iv-radius);
  padding: 28px 24px;
  box-shadow: var(--iv-shadow);
  transition: box-shadow var(--iv-transition), transform var(--iv-transition);
}

.iv-card:hover {
  box-shadow: var(--iv-shadow-lg);
}

.iv-card__title {
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--iv-primary);
  margin: 0 0 16px;
}

.iv-card__list {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--iv-text);
}

/* --- Features 6 grid --- */
.iv-features-grid {
  display: grid;
  gap: 20px;
}

@media (min-width: 640px) {
  .iv-features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .iv-features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.iv-feature-card {
  background: var(--iv-bg);
  border-radius: var(--iv-radius);
  padding: 24px;
  border: 1px solid #e5e7eb;
  box-shadow: var(--iv-shadow);
  transition: box-shadow var(--iv-transition), transform var(--iv-transition);
}

.iv-feature-card:hover {
  box-shadow: var(--iv-shadow-lg);
}

.iv-feature-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.iv-feature-card__icon {
  width: 40px;
  height: 40px;
  color: var(--iv-primary);
  flex-shrink: 0;
}

.iv-feature-card__title {
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0;
  color: var(--iv-text);
}

.iv-feature-card ul {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--iv-muted);
}

/* --- Specs 3 cols --- */
.iv-spec-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .iv-spec-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.iv-spec-card {
  background: var(--iv-bg);
  border: 1px solid #e5e7eb;
  border-radius: var(--iv-radius);
  padding: 0;
  overflow: hidden;
  box-shadow: var(--iv-shadow);
}

.iv-spec-card h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin: 0;
  padding: 16px 20px;
  background: linear-gradient(90deg, rgba(var(--iv-primary-rgb), 0.14), transparent);
  color: var(--iv-primary);
  border-bottom: 1px solid #e5e7eb;
}

.iv-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid #f3f4f6;
}

.iv-spec-row:last-child {
  border-bottom: none;
}

.iv-spec-row dt {
  color: var(--iv-muted);
  font-weight: 500;
}

.iv-spec-row dd {
  margin: 0;
  text-align: right;
  color: var(--iv-text);
  font-weight: 600;
}

/* --- Applications --- */
.iv-apps-grid {
  display: grid;
  gap: 24px;
}

@media (min-width: 768px) {
  .iv-apps-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.iv-app-card {
  background: var(--iv-bg);
  border-radius: var(--iv-radius);
  overflow: hidden;
  border: 1px solid #e5e7eb;
  box-shadow: var(--iv-shadow);
  transition: box-shadow var(--iv-transition);
}

.iv-app-card:hover {
  box-shadow: var(--iv-shadow-lg);
}

.iv-app-card__img-wrap {
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.iv-app-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--iv-transition);
}

.iv-app-card:hover .iv-app-card__img-wrap img {
  transform: scale(1.05);
}

.iv-app-card__body {
  padding: 20px;
}

.iv-app-card__body h3 {
  font-family: 'Montserrat', 'Noto Sans SC', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 10px;
  color: var(--iv-text);
}

.iv-app-card__body p {
  margin: 0 0 12px;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--iv-muted);
}

.iv-app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.iv-app-tags span {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
  background: rgba(var(--iv-primary-rgb), 0.14);
  color: var(--iv-primary);
}

/* --- Table --- */
.iv-table-wrap {
  overflow-x: auto;
  border-radius: var(--iv-radius);
  border: 1px solid #e5e7eb;
  box-shadow: var(--iv-shadow);
}

.iv-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--iv-bg);
}

.iv-table th,
.iv-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid #f3f4f6;
}

.iv-table th {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: var(--iv-text);
  background: var(--iv-surface);
}

.iv-table tbody tr:hover {
  background: #fafafa;
}

.iv-table td:first-child {
  font-weight: 600;
  color: var(--iv-primary);
}

/* Back to top */
.iv-backtop {
  position: fixed;
  right: 20px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid #e5e7eb;
  background: #fff;
  color: var(--iv-primary);
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: var(--iv-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--iv-transition), visibility var(--iv-transition), transform var(--iv-transition);
  z-index: 100;
}

.iv-backtop.is-visible {
  opacity: 1;
  visibility: visible;
}

.iv-backtop:hover {
  transform: translateY(-3px);
  color: var(--iv-blue-950);
}

.iv-quote {
  margin: 0 auto;
  padding: 0 16px 48px;
  font-size: 1.125rem;
  font-style: italic;
  color: #4b5563;
  text-align: center;
  border: none;
  max-width: var(--iv-container);
}

/* 车载页使用与首页相同的 footer-v2，不在此隐藏 */

/* focus visible for a11y */
.iv-landing a:focus-visible,
.iv-backtop:focus-visible {
  outline: 2px solid var(--iv-primary);
  outline-offset: 2px;
}