:root {
  --orange: #FF7A00;
  --teal: #17C7A3;
  --cream: #FFF8F1;
  --dark: #2B2118;
  --gray: #7A6E62;
  --orange-grad: linear-gradient(135deg, #FF9A3C, #FF6B00);
  --radius: 20px;
  --shadow: 0 10px 30px rgba(255, 122, 0, 0.15);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: linear-gradient(160deg, #FFE9D2 0%, #FFD9B8 100%);
  color: var(--dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 70px;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }

/* 画布 */
.page-wrapper {
  max-width: 1150px;
  margin: 20px auto;
  background: var(--cream);
  border-radius: 32px;
  box-shadow: 0 20px 60px rgba(200, 90, 0, 0.1);
  overflow: hidden;
  position: relative;
}
section { scroll-margin-top: 78px; padding: 60px 40px; }
.section-title {
  font-size: 28px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: 0.5px;
}
.section-title span { color: var(--orange); }

/* 导航 */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 248, 241, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 122, 0, 0.1);
}
.nav-inner {
  max-width: 1150px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
}
.nav-logo img { height: 32px; border-radius: 8px; }
.nav-logo .t { color: var(--dark); }
.nav-logo .v { color: var(--orange); }
.nav-links {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  white-space: nowrap;
  flex: 1;
  justify-content: center;
  scrollbar-width: none;
}
.nav-links::-webkit-scrollbar { display: none; }
.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--gray);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--orange); }
.btn-nav {
  background: var(--orange-grad);
  color: #fff;
  padding: 10px 20px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 15px;
  box-shadow: 0 6px 16px rgba(255, 122, 0, 0.3);
  transition: transform 0.2s, box-shadow 0.2s;
  flex-shrink: 0;
}
.btn-nav:active { transform: scale(0.93); }

/* 首屏 */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
  padding-top: 40px;
}
.hero-tag {
  display: inline-block;
  background: rgba(23, 199, 163, 0.12);
  color: var(--teal);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 900;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}
.hero h1 span { color: var(--orange); }
.hero-desc {
  font-size: 16px;
  color: var(--gray);
  margin-bottom: 30px;
  line-height: 1.8;
}
.hero-desc p { margin-bottom: 6px; }
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 24px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}
.btn-primary {
  background: var(--orange-grad);
  color: #fff;
  box-shadow: 0 8px 20px rgba(255, 122, 0, 0.3);
}
.btn-primary:active { transform: scale(0.93); }
.btn-outline {
  background: #fff;
  color: var(--orange);
  border: 2px solid var(--orange);
}
.btn-outline:active { transform: scale(0.93); }
.hero-sub {
  font-size: 13px;
  color: #A89B8E;
}

/* 轮播 */
.carousel-wrap {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #000;
  aspect-ratio: 16 / 10;
}
.carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.carousel-slide.active { opacity: 1; }
.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.slide-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 40px 20px 20px;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  color: #fff;
}
.slide-content h3 { font-size: 20px; margin-bottom: 4px; }
.slide-content p { font-size: 14px; opacity: 0.9; }
.slide-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--orange);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}
.fixed-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: #fff;
  color: var(--dark);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  z-index: 10;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}
.danmaku {
  position: absolute;
  top: 60px;
  right: 20px;
  background: #fff;
  color: var(--dark);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  animation: floatY 3s ease-in-out infinite;
}
.danmaku::before {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 20px;
  width: 12px;
  height: 12px;
  background: #fff;
  transform: rotate(45deg);
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.dots {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  gap: 6px;
  z-index: 10;
}
.dots button {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  padding: 0;
  transition: background 0.3s;
}
.dots button.active { background: #fff; }

/* 功能亮点 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: 20px;
}
.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  transition: transform 0.2s, box-shadow 0.2s;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.feature-card.highlight {
  background: linear-gradient(135deg, #FFF0E0, #FFE4D0);
}
.feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  background: rgba(255, 122, 0, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
}
.feature-card.highlight .feature-icon {
  background: rgba(255, 122, 0, 0.2);
}
.feature-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}
.feature-desc {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.5;
}

/* 片库 */
.category-scroll {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 10px;
  margin-bottom: 24px;
  scrollbar-width: none;
}
.category-scroll::-webkit-scrollbar { display: none; }
.cat-pill {
  padding: 8px 20px;
  border-radius: 30px;
  background: #fff;
  color: var(--gray);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  border: 1px solid #eee;
  transition: all 0.2s;
}
.cat-pill.active {
  background: var(--orange);
  color: #fff;
  border-color: var(--orange);
}
.poster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 20px;
}
.poster-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  transition: transform 0.2s;
}
.poster-card:hover { transform: translateY(-4px); }
.poster-img-wrap {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #eee;
}
.poster-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.poster-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--orange);
  color: #fff;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}
.poster-tag.teal { background: var(--teal); }
.poster-info {
  padding: 12px;
}
.poster-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.poster-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--gray);
}

/* 精彩画面 */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.scene-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: #000;
}
.scene-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.scene-card:hover img { transform: scale(1.04); }
.scene-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(transparent 40%, rgba(0,0,0,0.8));
  display: flex;
  align-items: flex-end;
  padding: 16px;
}
.scene-overlay p {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}

/* 界面多端 */
.ui-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 30px;
}
.ui-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 2px solid #fff;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
  position: relative;
}
.ui-card.span-2 {
  grid-column: span 2;
}
.ui-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ui-label {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background: #fff;
  color: var(--dark);
  padding: 6px 15px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 16px;
}
.device-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.device-icon {
  width: 40px;
  height: 40px;
  background: rgba(23, 199, 163, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--teal);
  flex-shrink: 0;
}
.device-text h4 { font-size: 15px; margin-bottom: 2px; }
.device-text p { font-size: 12px; color: var(--gray); }

/* 用户口碑 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.review-stars {
  color: #FFB800;
  font-size: 16px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.review-content {
  font-size: 14px;
  line-height: 1.6;
  color: #333;
  margin-bottom: 16px;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 10px;
}
.avatar {
  width: 36px;
  height: 36px;
  background: var(--teal);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}
.user-info { font-size: 13px; }
.user-name { font-weight: 700; color: var(--dark); }
.user-role { color: var(--gray); }

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}
.faq-q {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  cursor: pointer;
  text-align: left;
}
.faq-arrow {
  transition: transform 0.3s;
  color: var(--orange);
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-a {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--gray);
  line-height: 1.6;
}
.faq-item.open .faq-a {
  max-height: 200px;
  padding-bottom: 20px;
}

/* 下载区 */
.download-banner {
  background: linear-gradient(90deg, var(--orange), var(--teal));
  border-radius: var(--radius);
  padding: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  margin-bottom: 24px;
}
.download-banner h3 { font-size: 22px; margin-bottom: 4px; }
.download-banner p { font-size: 14px; opacity: 0.9; }
.btn-white {
  background: #fff;
  color: var(--orange);
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 700;
  white-space: nowrap;
}
.btn-white:active { transform: scale(0.93); }
.download-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 40px;
  text-align: center;
  box-shadow: 0 8px 30px rgba(0,0,0,0.05);
}
.download-card h3 { font-size: 24px; margin-bottom: 12px; }
.download-card .sub { font-size: 14px; color: var(--gray); margin-bottom: 24px; }
.download-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.download-note { font-size: 12px; color: #A89B8E; }

/* 页脚 */
footer {
  padding: 40px 20px;
  text-align: center;
  font-size: 12px;
  color: #A89B8E;
  border-top: 1px solid rgba(255, 122, 0, 0.1);
  margin-top: 20px;
}
footer p { margin-bottom: 8px; }
footer a { color: #A89B8E; text-decoration: underline; }
footer time { display: block; margin-top: 8px; }

/* 移动端底部悬浮条 */
.mobile-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 10px 20px;
  box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
  z-index: 200;
  justify-content: space-between;
  align-items: center;
}
.mobile-bar-info {
  font-size: 14px;
  font-weight: 700;
}
.mobile-bar-info span { color: var(--teal); }
.mobile-bar .btn-primary {
  padding: 10px 20px;
  font-size: 14px;
}

@media (max-width: 1024px) {
  .hero { gap: 30px; }
  .hero h1 { font-size: 38px; }
  section { padding: 40px 24px; }
}
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero h1 { font-size: 36px; }
  .nav-inner { padding: 10px 16px; gap: 10px; }
  .nav-links { gap: 16px; }
  .ui-grid { grid-template-columns: 1fr; }
  .ui-card.span-2 { grid-column: span 1; }
  .download-banner { flex-direction: column; text-align: center; gap: 16px; }
  .mobile-bar { display: flex; }
  body { padding-bottom: 24px; }
  .page-wrapper { margin: 10px; border-radius: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}