@charset "UTF-8";

:root {
  --primary: #FF6B35;
  --primary-dark: #E55A2B;
  --primary-light: #FF8C5A;
  --secondary: #1a1a2e;
  --accent: #FFD700;
  --accent-dark: #E5C100;
  --bg: #f8f9fa;
  --bg-dark: #0f0f1a;
  --card-bg: #ffffff;
  --text: #333333;
  --text-light: #666666;
  --text-muted: #999999;
  --text-white: #ffffff;
  --border: #e8e8e8;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --nav-height: 72px;
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  -webkit-tap-highlight-color: transparent;
}

input, textarea {
  font-family: inherit;
  outline: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.section-title p {
  color: var(--text-light);
  font-size: 1.05rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.2);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
}

.btn-primary:hover {
  box-shadow: 0 6px 25px rgba(255, 107, 53, 0.55);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--text-white);
  color: var(--primary);
  box-shadow: var(--shadow);
}

.btn-white:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

i::before {
  content: '';
  display: block;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  border-bottom-color: var(--border);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--secondary);
  transition: opacity var(--transition);
}

.logo:hover {
  opacity: 0.8;
}

.logo-img {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.logo span {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu ul {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-menu ul li a {
  display: block;
  padding: 8px 18px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  border-radius: 50px;
  transition: all var(--transition);
  position: relative;
}

.nav-menu ul li a:hover,
.nav-menu ul li a.active {
  color: var(--primary);
  background: rgba(255, 107, 53, 0.08);
}

.nav-download-btn {
  margin-left: 16px;
}

.nav-download-btn .btn {
  padding: 10px 24px;
  font-size: 0.9rem;
}

.btn-mobile-download {
  display: none;
  padding: 8px 18px;
  font-size: 0.85rem;
  margin-right: 8px;
}

.menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  border-radius: 8px;
  transition: background var(--transition);
}

.menu-toggle:hover {
  background: rgba(0, 0, 0, 0.04);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--secondary);
  border-radius: 2px;
  transition: all var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.hero {
  padding: calc(var(--nav-height) + 60px) 0 80px;
  background: linear-gradient(180deg, #fff5f0 0%, #f8f9fa 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 215, 0, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 107, 53, 0.1);
  color: var(--primary);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease;
}

.hero-badge i::before {
  width: 18px;
  height: 18px;
  background: url('../icon/star.svg') center/contain no-repeat;
}

.hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--secondary);
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
  animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-buttons .btn i::before {
  width: 20px;
  height: 20px;
  background: url('../icon/download.svg') center/contain no-repeat;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 40px;
  animation: fadeInUp 0.6s ease 0.4s both;
}

.hero-stat h3 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}

.hero-stat p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.hero-publish-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), rgba(255, 215, 0, 0.08));
  border: 1px solid rgba(255, 107, 53, 0.15);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text);
  animation: fadeInUp 0.6s ease 0.45s both;
}

.hero-publish-time i::before {
  width: 14px;
  height: 14px;
  background: url('../icon/update.svg') center/contain no-repeat;
}

.hero-publish-time span {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
}

.hero-visual {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
}

.hero-scroll-strip {
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}

.hero-scroll-track {
  display: flex;
  gap: 16px;
  animation: heroScroll 20s linear infinite;
  width: max-content;
}

.hero-scroll-item {
  flex-shrink: 0;
  width: 200px;
  height: 380px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition);
}

.hero-scroll-item:hover {
  transform: scale(1.05);
}

.hero-scroll-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@keyframes heroScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-180px * 4 - 16px * 4)); }
}

.features {
  padding: 80px 0;
  background: #fff;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transition: transform var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 107, 53, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon i::before {
  width: 32px;
  height: 32px;
}

.icon-book::before { background: url('../icon/book.svg') center/contain no-repeat; }
.icon-speed::before { background: url('../icon/speed.svg') center/contain no-repeat; }
.icon-library::before { background: url('../icon/library.svg') center/contain no-repeat; }
.icon-devices::before { background: url('../icon/devices.svg') center/contain no-repeat; }

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.6;
}

.weekly-rec {
  padding: 80px 0;
  background: var(--bg);
}

.weekly-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.weekly-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  text-decoration: none;
  cursor: pointer;
}

.weekly-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.weekly-card-cover {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: #eee;
}

.weekly-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.weekly-card:hover .weekly-card-cover img {
  transform: scale(1.06);
}

.weekly-card-info {
  padding: 14px 12px 16px;
}

.weekly-card-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 6px;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.weekly-card-info p {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.product-intro {
  padding: 80px 0;
  background: var(--bg);
}

.product-content {
  display: flex;
  gap: 60px;
  align-items: center;
}

.product-text {
  flex: 1;
}

.product-text h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 20px;
}

.product-text h2 span {
  color: var(--primary);
}

.product-text > p {
  font-size: 1.05rem;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 30px;
}

.product-advantages {
  display: grid;
  gap: 16px;
}

.advantage-item {
  display: flex;
  gap: 16px;
  padding: 16px;
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  transition: all var(--transition);
  align-items: flex-start;
}

.advantage-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-lg);
}

.adv-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.adv-icon i::before {
  width: 24px;
  height: 24px;
}

.icon-check::before { background: url('../icon/check.svg') center/contain no-repeat; }
.icon-shield::before { background: url('../icon/shield.svg') center/contain no-repeat; }
.icon-update::before { background: url('../icon/update.svg') center/contain no-repeat; }
.icon-comment::before { background: url('../icon/comment.svg') center/contain no-repeat; }

.adv-text h4 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 4px;
}

.adv-text p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.5;
}

.product-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.product-screenshot {
  width: 100%;
  max-width: 300px;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
  transition: transform var(--transition);
}

.product-screenshot:hover {
  transform: scale(1.02);
}

.download {
  padding: 80px 0;
  background: linear-gradient(180deg, #1a1a2e 0%, #252540 100%);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}

.download .section-title h2 {
  color: #fff;
}

.download .section-title p {
  color: rgba(255, 255, 255, 0.7);
}

.download-single {
  max-width: 600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.download-single-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 48px 32px;
  text-align: center;
  transition: all var(--transition);
  backdrop-filter: blur(10px);
}

.download-single-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(255, 107, 53, 0.2);
}

.download-single-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.25), rgba(255, 107, 53, 0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-single-icon i::before {
  width: 36px;
  height: 36px;
  background: url('../icon/phone.svg') center/contain no-repeat;
}

.download-single-card h3 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.download-single-card p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 28px;
}

.download-single-card .btn {
  min-width: 220px;
}

.download-single-card .btn i::before {
  width: 20px;
  height: 20px;
  background: url('../icon/download.svg') center/contain no-repeat;
}

.install-notice {
  margin-top: 28px;
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.25);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.install-notice-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--secondary);
  font-weight: 900;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.install-notice-content h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.install-notice-content p {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
  margin-bottom: 12px;
}

.install-notice-content p strong {
  color: #ff4444;
}

.install-notice-content ol {
  list-style: decimal;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.install-notice-content ol li {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
}

.install-notice-content ol li strong {
  color: #fff;
}

.highlight-text {
  color: var(--accent) !important;
  font-weight: 700;
  background: rgba(255, 215, 0, 0.12);
  padding: 2px 6px;
  border-radius: 4px;
}

.reviews {
  padding: 80px 0;
  background: var(--bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid transparent;
}

.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border);
}

.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.review-stars i::before {
  width: 18px;
  height: 18px;
  background: url('../icon/star.svg') center/contain no-repeat;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
  position: relative;
  padding-left: 16px;
  border-left: 3px solid var(--primary);
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #667eea, #764ba2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.review-avatar i::before {
  width: 24px;
  height: 24px;
  background: url('../icon/user.svg') center/contain no-repeat;
}

.review-author-info {
  flex: 1;
}

.review-author-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--secondary);
}

.review-time {
  font-size: 0.78rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.floating-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
  z-index: 999;
  padding: 12px 20px;
  display: none;
  align-items: center;
  justify-content: space-between;
}

.floating-cta.visible {
  display: flex;
}

.floating-cta .cta-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.floating-cta .cta-logo {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.floating-cta .cta-text h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--secondary);
}

.floating-cta .cta-text p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.floating-cta .btn {
  padding: 10px 24px;
  font-size: 0.9rem;
}

.footer {
  background: #0a0a14;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.5);
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.35);
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  backdrop-filter: blur(4px);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  max-width: 420px;
  width: 90%;
  text-align: center;
  position: relative;
  transform: translateY(30px);
  transition: transform var(--transition);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
  font-size: 1.2rem;
  color: var(--text-muted);
}

.modal-close:hover {
  background: var(--bg);
}

.modal-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 107, 53, 0.05));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-icon i::before {
  width: 36px;
  height: 36px;
  background: url('../icon/download.svg') center/contain no-repeat;
}

.modal h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}

.modal p {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.6;
}

.modal-platforms {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal-platforms .btn {
  width: 100%;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .container {
    padding: 0 24px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .weekly-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .hero .container {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .hero-content {
    max-width: 100%;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-scroll-item {
    width: 150px;
    height: 200px;
  }

  @keyframes heroScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-150px * 4 - 16px * 4)); }
  }

  .product-content {
    flex-direction: column;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
  }

  .header .container {
    height: var(--nav-height);
  }

  .btn-mobile-download {
    display: inline-flex;
  }

  .menu-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-120%);
    transition: transform var(--transition);
    z-index: 999;
  }

  .nav-menu.open {
    transform: translateY(0);
  }

  .nav-menu ul {
    flex-direction: column;
    gap: 4px;
  }

  .nav-menu ul li a {
    padding: 12px 18px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .nav-download-btn {
    margin-left: 0;
    margin-top: 12px;
    text-align: center;
  }

  .nav-download-btn .btn {
    width: 100%;
  }

  .hero {
    padding: calc(var(--nav-height) + 30px) 0 50px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1rem;
  }

  .hero-scroll-item {
    width: 130px;
    height: 180px;
  }

  @keyframes heroScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-130px * 4 - 16px * 4)); }
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat h3 {
    font-size: 1.3rem;
  }

  .features {
    padding: 60px 0;
  }

  .section-title {
    margin-bottom: 40px;
  }

  .section-title h2 {
    font-size: 1.6rem;
  }

  .product-intro {
    padding: 60px 0;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-col h4 {
    font-size: 0.9rem;
    margin-bottom: 12px;
  }

  .footer-col ul li a {
    font-size: 0.8rem;
  }

  .floating-cta {
    display: flex;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-content h1 {
    font-size: 1.65rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 16px;
  }

  .hero-scroll-item {
    width: 180px;
    height: 320px;
  }

  @keyframes heroScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-110px * 4 - 16px * 4)); }
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .product-text h2 {
    font-size: 1.5rem;
  }

  .advantage-item {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    align-items: center;
  }

  .advantage-item:hover {
     transform: none;
   }

   .download-single-card {
    padding: 32px 20px;
  }

  .install-notice {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 20px 16px;
  }

  .modal {
    padding: 28px 20px;
  }

  .floating-cta {
    padding: 10px 16px;
  }

  .floating-cta .cta-text h4 {
    font-size: 0.85rem;
  }
}