@charset "UTF-8";

:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #A5B4FC;
  --accent: #8B5CF6;
  --accent-light: #C4B5FD;
  --gradient: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
  --gradient-soft: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, rgba(139,92,246,0.08) 100%);
  --gradient-card: linear-gradient(135deg, #EEF2FF 0%, #F5F3FF 100%);
  --bg: #FAFBFF;
  --bg-alt: #F1F5F9;
  --bg-white: #FFFFFF;
  --text: #1E293B;
  --text-secondary: #475569;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --border-light: #F1F5F9;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 16px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 60px rgba(99,102,241,0.12), 0 8px 20px rgba(139,92,246,0.08);
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-padding-top: var(--nav-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:active,
a:focus,
a:hover {
  -webkit-tap-highlight-color: transparent;
  outline: none;
}

* {
  -webkit-tap-highlight-color: rgba(0,0,0,0) !important;
}

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

ul, ol {
  list-style: none;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
/* 星星开始 */
.aiarticle-comment-rating-icon{
    display:inline-block !important;
    width:auto !important;
    height:auto !important;
    margin-right:2px;
    color:#ffb400 !important;
    font-style:normal !important;
    font-weight:normal !important;
    line-height:1 !important;
    vertical-align:middle;
    text-decoration:none !important;
}

.aiarticle-comment-rating-icon:before{
    font-family:Arial,"Segoe UI Symbol","Noto Sans Symbols","Microsoft YaHei",sans-serif !important;
    font-style:normal !important;
    font-weight:normal !important;
    line-height:1 !important;
}

.aiarticle-comment-rating-icon.fa-star:before{
    content:"\2605" !important;
}

.aiarticle-comment-rating-icon.fa-star-o:before{
    content:"\2606" !important;
}

.aiarticle-comment-rating-icon:last-child{
    margin-right:0;
}
/* 星星结束 */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
}

.nav.scrolled {
  background: rgba(255,255,255,0.95);
  border-bottom-color: var(--border-light);
  box-shadow: var(--shadow-sm);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  transition: opacity var(--transition);
  flex-shrink: 0;
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-logo .logo-icon {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 10px;
}

.nav-logo .logo-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-menu .mobile-download {
  display: none;
}

.nav-menu > li > a {
  display: block;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition);
  white-space: nowrap;
}

.nav-menu > li > a:hover {
  color: var(--primary);
  background: var(--gradient-soft);
}

.nav-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--gradient);
  border-radius: var(--radius-full);
  transition: all var(--transition);
  box-shadow: 0 4px 14px rgba(99,102,241,0.3);
  white-space: nowrap;
}

.nav-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(99,102,241,0.4);
}

.nav-download-btn .btn-icon {
  display: inline-block;
  width: 16px;
  height: 16px;
  background: url('../icon/download.svg') center/contain no-repeat;
  filter: brightness(0) invert(1);
}

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.nav-toggle:hover {
  background: var(--bg-alt);
}

.nav-toggle .icon-menu,
.nav-toggle .icon-close {
  width: 22px;
  height: 22px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
}

.nav-toggle .icon-menu {
  background-image: url('../icon/menu.svg');
}

.nav-toggle .icon-close {
  background-image: url('../icon/close.svg');
}

.nav-toggle.active .icon-menu {
  display: none;
}

.nav-toggle:not(.active) .icon-close {
  display: none;
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: opacity var(--transition);
}

.nav-overlay.active {
  display: block;
  opacity: 1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  color: #fff;
  background: var(--gradient);
  box-shadow: 0 6px 20px rgba(99,102,241,0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(99,102,241,0.4);
}

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

.btn-outline:hover {
  background: var(--gradient-soft);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 18px;
}

.btn .btn-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.btn-primary .btn-icon {
  filter: brightness(0) invert(1);
}

.btn-icon-download {
  background-image: url('../icon/download.svg');
}

.btn-icon-chevron {
  background-image: url('../icon/chevron-right.svg');
}

.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-label {
  display: inline-block;
  padding: 6px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--gradient-soft);
  border-radius: var(--radius-full);
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 40px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-desc {
  font-size: 17px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

.hero {
  padding: calc(var(--nav-height) + 60px) 0 100px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139,92,246,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

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

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--gradient-soft);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
}

.hero-badge .badge-icon {
  display: inline-block;
  width: 16px;
  height: 16px;
  background: url('../icon/zap.svg') center/contain no-repeat;
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-tagline {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
}

.hero-tagline .highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image {
  flex: 1;
  min-width: 0;
  display: flex;
  justify-content: center;
  animation: float 6s ease-in-out infinite;
}

.hero-image img {
  max-width: 480px;
  width: 100%;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

.features {
  background: var(--bg-white);
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--transition);
}

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

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  position: relative;
}

.feature-icon-bg {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  opacity: 0.12;
}

.feature-icon .icon-img {
  display: inline-block;
  width: 28px;
  height: 28px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  position: relative;
  z-index: 1;
}

.feature-card:nth-child(1) .feature-icon-bg { background: #6366F1; }
.feature-card:nth-child(1) .icon-img { background-image: url('../icon/tag.svg'); filter: brightness(0) saturate(100%) invert(33%) sepia(79%) saturate(2438%) hue-rotate(225deg) brightness(97%) contrast(94%); }

.feature-card:nth-child(2) .feature-icon-bg { background: #8B5CF6; }
.feature-card:nth-child(2) .icon-img { background-image: url('../icon/edit.svg'); filter: brightness(0) saturate(100%) invert(44%) sepia(61%) saturate(2495%) hue-rotate(236deg) brightness(98%) contrast(98%); }

.feature-card:nth-child(3) .feature-icon-bg { background: #A78BFA; }
.feature-card:nth-child(3) .icon-img { background-image: url('../icon/settings.svg'); filter: brightness(0) saturate(100%) invert(56%) sepia(36%) saturate(1252%) hue-rotate(213deg) brightness(101%) contrast(98%); }

.feature-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}

.demo {
  position: relative;
}

.demo-scroll {
  margin: 0 -24px;
  padding: 0 24px;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; 
  -ms-overflow-style: none; 
  cursor: grab;
  user-select: none;
}

.demo-scroll::-webkit-scrollbar {
  display: none; 
}

.demo-scroll-track {
  display: flex;
  gap: 20px;
  padding-bottom: 8px;
}

.demo-scroll-item {
  flex-shrink: 0;
  width: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.demo-scroll-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.demo-scroll-item img {
  width: 100%;
  height: auto;
  display: block;
  pointer-events: none;
}

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

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

.advantage-card.large {
  grid-column: span 2;
}

.advantage-card {
  background: var(--bg);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.advantage-card .adv-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.advantage-card .adv-icon {
  display: inline-block;
  width: 24px;
  height: 24px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
}

.advantage-card:nth-child(1) .adv-icon-wrap { background: rgba(99,102,241,0.1); }
.advantage-card:nth-child(1) .adv-icon { background-image: url('../icon/shield.svg'); filter: brightness(0) saturate(100%) invert(33%) sepia(79%) saturate(2438%) hue-rotate(225deg) brightness(97%) contrast(94%); }

.advantage-card:nth-child(2) .adv-icon-wrap { background: rgba(139,92,246,0.1); }
.advantage-card:nth-child(2) .adv-icon { background-image: url('../icon/zap.svg'); filter: brightness(0) saturate(100%) invert(44%) sepia(61%) saturate(2495%) hue-rotate(236deg) brightness(98%) contrast(98%); }

.advantage-card:nth-child(3) .adv-icon-wrap { background: rgba(99,102,241,0.1); }
.advantage-card:nth-child(3) .adv-icon { background-image: url('../icon/heart.svg'); filter: brightness(0) saturate(100%) invert(33%) sepia(79%) saturate(2438%) hue-rotate(225deg) brightness(97%) contrast(94%); }

.advantage-card:nth-child(4) .adv-icon-wrap { background: rgba(139,92,246,0.1); }
.advantage-card:nth-child(4) .adv-icon { background-image: url('../icon/smile.svg'); filter: brightness(0) saturate(100%) invert(44%) sepia(61%) saturate(2495%) hue-rotate(236deg) brightness(98%) contrast(98%); }

.advantage-card:nth-child(5) .adv-icon-wrap { background: rgba(167,139,250,0.1); }
.advantage-card:nth-child(5) .adv-icon { background-image: url('../icon/users.svg'); filter: brightness(0) saturate(100%) invert(56%) sepia(36%) saturate(1252%) hue-rotate(213deg) brightness(101%) contrast(98%); }

.advantage-card:nth-child(6) .adv-icon-wrap { background: rgba(99,102,241,0.1); }
.advantage-card:nth-child(6) .adv-icon { background-image: url('../icon/message-circle.svg'); filter: brightness(0) saturate(100%) invert(33%) sepia(79%) saturate(2438%) hue-rotate(225deg) brightness(97%) contrast(94%); }

.advantage-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

.advantage-card.large {
  display: flex;
  gap: 28px;
  align-items: flex-start;
  padding: 40px 36px;
}

.advantage-card.large .adv-icon-wrap {
  margin-bottom: 0;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
}

.advantage-card.large .adv-icon {
  display: inline-block;
  width: 28px;
  height: 28px;
}

.advantage-card.large .adv-content h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.download {
  background: var(--gradient-soft);
  position: relative;
  overflow: hidden;
}

.download::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(99,102,241,0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.download-inner {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.download-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
}

.download-desc {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.7;
}

.download-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.download-btn-platform {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
  -webkit-tap-highlight-color: transparent;
}

.download-btn-platform:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.download-btn-platform:active {
  transform: scale(0.97);
}

.download-btn-platform .platform-icon {
  display: inline-block;
  width: 28px;
  height: 28px;
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
}

.platform-icon-android { background-image: url('../icon/smartphone.svg'); }
.platform-icon-ios { background-image: url('../icon/smartphone.svg'); }

.platform-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}

.platform-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.platform-hint {
  font-size: 12px;
  color: var(--text-light);
}

.reviews {
  background: var(--bg);
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

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

.star-icon {
  display: inline-block;
  width: 18px;
  height: 18px;
  background: url('../icon/star.svg') center/contain no-repeat;
}

.review-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 4px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.review-card:nth-child(1) .review-avatar { background: linear-gradient(135deg, #6366F1, #8B5CF6); }
.review-card:nth-child(2) .review-avatar { background: linear-gradient(135deg, #F59E0B, #EF4444); }
.review-card:nth-child(3) .review-avatar { background: linear-gradient(135deg, #10B981, #06B6D4); }
.review-card:nth-child(4) .review-avatar { background: linear-gradient(135deg, #8B5CF6, #EC4899); }

.avatar-icon {
  display: inline-block;
  width: 22px;
  height: 22px;
  background: url('../icon/user.svg') center/contain no-repeat;
  filter: brightness(0) invert(1);
}

.review-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.review-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.review-role {
  font-size: 12px;
  color: var(--text-light);
}

.footer {
  background: var(--text);
  color: #CBD5E1;
  padding: 72px 0 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-logo .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.footer-logo span {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: #94A3B8;
  transition: color var(--transition);
}

.footer-col ul li a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: #64748B;
  text-align: center;
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  .hero .container {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }

  .hero-title {
    font-size: 40px;
  }

  .hero-tagline {
    font-size: 18px;
  }

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

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

  .hero-image img {
    max-width: 360px;
  }

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

  .demo-scroll-item {
    width: 340px;
  }

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

  .advantage-card.large {
    grid-column: span 1;
  }

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

  .reviews-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .section-title {
    font-size: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 20px;
  }

  .section {
    padding: 72px 0;
  }

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

  .section-title {
    font-size: 28px;
  }

  .section-desc {
    font-size: 15px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background: rgba(255,255,255,0.98);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
  }

  .nav.scrolled {
    background: rgba(255,255,255,0.98);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-sm);
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-white);
    flex-direction: column;
    padding: 80px 28px 28px;
    gap: 4px;
    box-shadow: var(--shadow-xl);
    transition: right var(--transition);
    z-index: 1001;
    overflow-y: auto;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu > li {
    width: 100%;
  }

  .nav-menu > li > a {
    padding: 14px 16px;
    border-radius: var(--radius);
    font-size: 16px;
    width: 100%;
  }

  .nav-download-btn {
    display: none;
  }

  .nav-menu .mobile-download {
    display: flex !important;
    margin-top: 12px;
    justify-content: center;
  }

  .hero {
    padding: calc(var(--nav-height) + 36px) 0 56px;
  }

  .hero-title {
    font-size: 32px;
  }

  .hero-tagline {
    font-size: 16px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-image img {
    max-width: 280px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .feature-card {
    padding: 28px 24px;
  }

  .demo-scroll-item {
    width: 240px;
  }

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

  .advantage-card.large {
    flex-direction: column;
    align-items: flex-start;
  }

  .download-title {
    font-size: 28px;
  }

  .download-buttons {
    flex-direction: column;
    width: 100%;
  }

  .download-btn-platform {
    width: 100%;
    justify-content: center;
  }

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

  .review-card {
    padding: 24px 20px;
  }

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

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 26px;
  }

  .section-title {
    font-size: 24px;
  }

  .btn-lg {
    padding: 14px 28px;
    font-size: 16px;
  }
}