@charset "UTF-8";

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;
  --primary-bg: #eff6ff;
  --accent: #3b82f6;
  --bg: #ffffff;
  --bg-alt: #fafafa;
  --bg-dark: #1e1e2a;
  --bg-footer: #14141c;
  --text: #2d3436;
  --text-light: #636e72;
  --text-white: #f5f6fa;
  --text-footer: #b2bec3;
  --border: #e9ecef;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --shadow-btn: 0 8px 25px rgba(37, 99, 235, 0.35);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --nav-height: 72px;
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  min-width: 320px;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 评论星星样式开始 */.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;
}
/* 评论星星样式结束 */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  will-change: transform;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
}

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

.navbar .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: var(--transition);
  flex-shrink: 0;
}

.nav-logo:hover {
  transform: scale(1.03);
  color: var(--primary);
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

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

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

.nav-menu li a {
  display: block;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.nav-menu li a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transition: transform 0.3s ease;
}

.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--primary);
  background: var(--primary-bg);
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav-actions {
  display: none;
  align-items: center;
  gap: 8px;
}

.nav-download-btn {
  display: none;
  align-items: center;
  gap: 4px;
  padding: 6px 14px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 5px;
  -webkit-tap-highlight-color: transparent;
}

.nav-download-btn:hover {
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
  transform: scale(1.05);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

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

.hero {
  padding: calc(var(--nav-height) + 60px) 0 80px;
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -150px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 60px;
}

.hero-content {
  flex: 1;
  max-width: 540px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: 20px;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease;
}

.hero-badge .icon-star {
  width: 14px;
  height: 14px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

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

.hero-desc {
  font-size: 17px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 36px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

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

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  animation: floatUpDown 3s ease-in-out infinite;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow-btn);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.45);
}

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

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

.btn-outline:hover [class^="icon-"] {
  filter: brightness(0) invert(1);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 17px;
  font-weight: 700;
  border-radius: 50px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #ffffff;
  box-shadow: var(--shadow-btn);
  transition: var(--transition);
  min-width: 200px;
}

.btn-download:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 35px rgba(37, 99, 235, 0.5);
}

.btn-download:active {
  transform: translateY(-1px);
}

.btn-download-outline {
  background: #ffffff;
  color: var(--primary);
  border: 2px solid var(--primary);
  box-shadow: none;
}

.btn-download-outline:hover {
  background: var(--primary-bg);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.2);
}

.section {
  padding: 90px 0;
}

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

.section-label {
  display: inline-block;
  padding: 6px 18px;
  background: var(--primary-bg);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: 20px;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

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

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  align-items: center;
}

.about-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-gallery-scroll {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  padding: 8px 0;
  touch-action: pan-x;
  will-change: scroll-position;
}

.about-gallery-scroll::-webkit-scrollbar {
  height: 6px;
}

.about-gallery-scroll::-webkit-scrollbar-track {
  background: var(--bg-alt);
  border-radius: 3px;
}

.about-gallery-scroll::-webkit-scrollbar-thumb {
  background: var(--primary-light);
  border-radius: 3px;
}

.about-gallery-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

.about-gallery-scroll img {
  flex-shrink: 0;
  width: 260px;
  height: auto;
  border-radius: var(--radius);
  scroll-snap-align: start;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: auto;
}

.about-features-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
  cursor: default;
}

.about-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.about-item .icon-wrap {
  width: 48px;
  height: 48px;
  background: var(--primary-bg);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text);
}

.about-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

.features {
  background: var(--bg-alt);
}

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

.feature-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

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

.feature-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 24px;
  background: var(--primary-bg);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  transform: rotateY(180deg);
}

.feature-card:hover .feature-icon [class^="icon-"] {
  filter: brightness(0) invert(1);
}

.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

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

.stats {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 50px 0;
}

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

.stat-item {
  padding: 20px;
}

.stat-number {
  font-size: 40px;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-number .counter-suffix {
  font-size: 24px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
}

.recommend {
  background: var(--bg-alt);
}

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

.recommend-card {
  background: var(--bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.recommend-cover {
  height: 160px;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
  position: relative;
}

.recommend-cover img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.recommend-cover::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 40%;
  background: linear-gradient(to top, rgba(0,0,0,0.35), transparent);
}

.recommend-rank {
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 20px;
  letter-spacing: 1px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(6px);
}

.recommend-body {
  padding: 20px 22px;
}

.recommend-body h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}

.recommend-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.recommend-tag {
  display: inline-block;
  font-size: 12px;
  padding: 3px 10px;
  background: var(--bg-alt);
  color: var(--text-light);
  border-radius: 6px;
  font-weight: 500;
}

.recommend-stats {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-light);
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.recommend-stats .icon-star {
  filter: brightness(0) saturate(100%) invert(74%) sepia(68%) saturate(589%) hue-rotate(359deg) brightness(102%) contrast(96%);
}

.recommend-divider {
  color: var(--border);
}

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

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

.review-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

.review-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  flex-shrink: 0;
  background-color: var(--primary-bg);
  background-size: 24px 24px;
  padding: 10px;
}

.review-header strong {
  font-size: 15px;
  color: var(--text);
  display: block;
}

.review-stars {
  font-size: 14px;
  color: #fdcb6e;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 12px;
}

.review-time {
  font-size: 12px;
  color: #b2bec3;
}

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

.download-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
}

.download-card {
  background: var(--bg);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

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

.download-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, #eff6ff 0%, #ffffff 100%);
}

.download-card.featured::before {
  content: '推荐';
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
  letter-spacing: 1px;
}

.download-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: var(--primary-bg);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.download-version {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 24px;
}

.faq {
  background: var(--bg-alt);
}

.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 16px;
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary-light);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  transition: var(--transition);
  gap: 16px;
  -webkit-tap-highlight-color: transparent;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .icon-arrow-down {
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.faq-item.active .faq-question .icon-arrow-down {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

p.faq-answer-inner {
  margin: 0;
  padding: 0 28px 22px;
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
}

.footer {
  background: var(--bg-footer);
  color: var(--text-footer);
  padding: 60px 0 30px;
}

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

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand .nav-logo .logo-text {
  background: linear-gradient(135deg, #60a5fa, #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand .logo-icon {
  
  opacity: 0.9;
  border-radius: 5px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 20px;
  opacity: 0.7;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 20px;
}

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

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-footer);
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  transition: var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.social-links a:hover {
  background: var(--primary);
  transform: translateY(-3px);
}

.social-links a:hover [class^="icon-"] {
  filter: brightness(0) invert(1);
}

.social-links a [class^="icon-"] {
  filter: brightness(0) invert(0.7);
  transition: var(--transition);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 30px;
  text-align: center;
  font-size: 13px;
  opacity: 0.6;
}

.scroll-top-btn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

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

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

@keyframes floatUpDown {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1024px) {
  :root {
    --nav-height: 64px;
  }

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

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

  .hero-title {
    font-size: 36px;
  }

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

  .hero-visual img {
    max-width: 340px;
  }

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

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

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

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

  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 30px;
  }
}

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

  .container {
    padding: 0 16px;
  }

  .nav-actions {
    display: flex;
  }

  .nav-download-btn {
    display: flex;
    margin-right: 40px;
  }

  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    pointer-events: none;
  }

  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

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

  .nav-menu li a {
    display: block;
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-sm);
    text-align: center;
  }

  .nav-menu li a::after {
    display: none;
  }

  .hero {
    padding: calc(var(--nav-height) + 40px) 0 50px;
  }

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

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

  .hero-visual img {
    max-width: 260px;
  }

  .about-gallery-scroll img {
    width: 220px;
  }

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

  .hero-buttons .btn {
    width: 100%;
    max-width: 300px;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 26px;
  }

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

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

  .feature-card {
    padding: 28px 20px;
  }

  .recommend-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .recommend-cover {
    height: 110px;
  }

  .recommend-body {
    padding: 12px 14px;
  }

  .recommend-body h4 {
    font-size: 15px;
  }

  .recommend-stats {
    font-size: 12px;
  }

  .recommend-tag {
    font-size: 11px;
    padding: 2px 8px;
  }

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

  .review-card {
    padding: 20px;
  }

  .stats {
    padding: 36px 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .stat-number {
    font-size: 32px;
  }

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

  .download-card {
    padding: 30px 24px;
  }

  .faq-question {
    padding: 18px 20px;
    font-size: 15px;
  }

  p.faq-answer-inner {
    padding: 0 20px 18px;
    font-size: 14px;
  }

  .footer {
    padding: 40px 0 24px;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 8px;
  }

  .footer-brand .nav-logo {
    justify-content: center;
  }

  .social-links {
    justify-content: center;
  }

  .scroll-top-btn {
    bottom: 20px;
    right: 16px;
    width: 42px;
    height: 42px;
    border-radius: 12px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 24px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-buttons .btn {
    font-size: 15px;
    padding: 12px 24px;
  }

  .section-title {
    font-size: 22px;
  }

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

  .stat-number {
    font-size: 28px;
  }

  .download-cards {
    gap: 16px;
  }

  .btn-download {
    padding: 14px 28px;
    font-size: 15px;
    min-width: 160px;
  }

  .feature-card {
    padding: 24px 16px;
  }
}