@charset "UTF-8";

:root {
    --primary: #2196F3;
    --primary-dark: #1565C0;
    --primary-light: #BBDEFB;
    --accent: #0D47A1;
    --bg: #f5f8fc;
    --bg-card: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --border: #e0e8f0;
    --shadow: 0 2px 16px rgba(33,150,243,0.08);
    --shadow-hover: 0 8px 30px rgba(33,150,243,0.15);
    --radius: 12px;
    --max-width: 1200px;
    --nav-height: 64px;
    --transition: 0.25s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 25%, #e8eaf6 50%, #e3f2fd 75%, #bbdefb 100%);
    background-size: 400% 400%;
    animation: bgFlow 20s ease infinite;
    opacity: 0.6;
}

.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;
}

@keyframes bgFlow {
    0% { background-position: 0% 50%; }
    25% { background-position: 100% 0%; }
    50% { background-position: 100% 100%; }
    75% { background-position: 0% 100%; }
    100% { background-position: 0% 50%; }
}

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

a:active,
a:focus {
    background-color: transparent;
    outline: none;
}

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

ul {
    list-style: none;
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    height: var(--nav-height);
    transition: var(--transition);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-dark);
    cursor: pointer;
    transition: var(--transition);
}

.nav-brand:hover {
    color: var(--primary);
}

.nav-brand img {
    height: 36px;
    width: auto;
}

.search-box {
    display: flex;
    align-items: center;
    flex: 1;
    max-width: 320px;
    margin: 0 30px;
    background: var(--bg);
    border-radius: 50px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.search-box:hover {
    border-color: var(--primary-light);
    box-shadow: 0 2px 8px rgba(33,150,243,0.1);
}

.search-input {
    flex: 1;
    padding: 10px 18px;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--text);
    font-family: inherit;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    padding: 10px 16px;
    background: var(--primary);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background: var(--primary-dark);
}

.search-btn svg {
    display: block;
}

.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 4px;
}

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

.nav-menu ul li a:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.mobile-download-btn {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 16px;
    background: var(--primary);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.mobile-download-btn:hover {
    background: var(--primary-dark);
}

.mobile-download-btn i {
    width: 14px;
    height: 14px;
    display: block;
    position: relative;
}

.mobile-download-btn i::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 14px;
    height: 14px;
    background: #fff;
    mask-image: url("../icons/download-cloud.svg");
    -webkit-mask-image: url("../icons/download-cloud.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

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

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

.nav-toggle i {
    display: block;
    width: 24px;
    height: 24px;
}

.nav-toggle i::before {
    content: "";
    display: block;
    width: 24px;
    height: 24px;
    background: currentColor;
    mask-image: url("../icons/menu.svg");
    -webkit-mask-image: url("../icons/menu.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.hero {
    padding: 140px 0 80px;
    position: relative;
}

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

.hero-left {
    flex: 1;
    text-align: left;
}

.hero-right {
    flex: 0 0 360px;
}

.hero-logo {
    width: 100px;
    height: 100px;
    margin-bottom: 24px;
    border-radius: 24px;
    box-shadow: 0 8px 32px rgba(33,150,243,0.25);
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.hero .subtitle {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 600px;
}

.hero .hero-stats {
    display: flex;
    justify-content: flex-start;
    gap: 48px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero .hero-stats .stat-item {
    text-align: left;
}

.hero .hero-stats .stat-num {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.hero .hero-stats .stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.update-time {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.update-time span {
    font-size: 13px;
    color: var(--text-muted);
}

.hero-preview {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 260px;
    padding: 12px;
    background: var(--bg-card);
    border-radius: 36px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    border: 2px solid var(--border);
    position: relative;
}

.phone-mockup::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
}

.phone-screen {
    width: 100%;
    height: auto;
    border-radius: 24px;
    display: block;
    margin-top: 16px;
}

.floating-badge {
    position: absolute;
    background: #fff;
    padding: 8px 14px;
    border-radius: 20px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
}

.badge-icon {
    width: 16px;
    height: 16px;
    display: block;
    flex-shrink: 0;
    position: relative;
}

.badge-icon::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 16px;
    height: 16px;
    background: var(--primary);
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.icon-book::before {
    mask-image: url("../icons/book.svg");
    -webkit-mask-image: url("../icons/book.svg");
}

.icon-zap::before {
    mask-image: url("../icons/zap.svg");
    -webkit-mask-image: url("../icons/zap.svg");
}

.icon-moon::before {
    mask-image: url("../icons/moon.svg");
    -webkit-mask-image: url("../icons/moon.svg");
}

.icon-download::before {
    mask-image: url("../icons/download.svg");
    -webkit-mask-image: url("../icons/download.svg");
}

.badge-top-left {
    top: 10px;
    left: -10px;
    animation: floatBadge 3s ease-in-out infinite;
}

.badge-top-right {
    top: 60px;
    right: -10px;
    animation: floatBadge 3s ease-in-out infinite 0.5s;
}

.badge-bottom-left {
    bottom: 80px;
    left: -20px;
    animation: floatBadge 3s ease-in-out infinite 1s;
}

.badge-bottom-right {
    bottom: 20px;
    right: -5px;
    animation: floatBadge 3s ease-in-out infinite 1.5s;
}

@keyframes floatBadge {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 500px;
    margin: 0 auto;
}

.section-divider {
    width: 50px;
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin: 16px auto 0;
}

.intro {
    background: var(--bg-card);
}

.intro .container {
    display: flex;
    gap: 60px;
}

.intro-left {
    flex: 1;
}

.intro-right {
    flex: 0 0 380px;
}

.intro-header h3 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.intro-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.intro-content p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 12px;
}

.intro-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.intro-feature-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.intro-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.intro-feature-content h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}

.intro-feature-content p {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

.intro-logo-wrapper {
    text-align: center;
    margin-bottom: 24px;
}

.intro-logo {
    width: 100px;
    height: 100px;
    border-radius: 24px;
    display: block;
    margin: 0 auto 12px;
    box-shadow: 0 4px 16px rgba(33,150,243,0.15);
}

.intro-logo-text {
    font-size: 14px;
    color: var(--text-muted);
}

.intro-download-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.intro-download-btn {
    flex: 1;
    padding: 14px;
    text-align: center;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.intro-download-icon {
    width: 16px;
    height: 16px;
    display: block;
    position: relative;
}

.intro-download-icon::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 16px;
    height: 16px;
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.icon-android::before {
    background: #fff;
    mask-image: url("../icons/android.svg");
    -webkit-mask-image: url("../icons/android.svg");
}

.icon-ios::before {
    background: var(--text);
    mask-image: url("../icons/apple.svg");
    -webkit-mask-image: url("../icons/apple.svg");
}

.intro-download-btn.android {
    background: var(--primary);
    color: #fff;
}

.intro-download-btn.android:hover {
    background: var(--primary-dark);
}

.intro-download-btn.ios {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.intro-download-btn.ios:hover {
    background: var(--border);
}

.intro-versions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.intro-version-card {
    padding: 16px;
    background: var(--bg);
    border-radius: 10px;
    border: 1px solid var(--border);
}

.intro-version-header {
    margin-bottom: 8px;
}

.intro-version-tag {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.intro-version-card p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 12px;
}

.intro-version-platforms {
    display: flex;
    gap: 8px;
}

.intro-platform-tag {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--border);
    padding: 3px 10px;
    border-radius: 4px;
}

.features {
    background: transparent;
}

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

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
    cursor: grab;
}

.feature-card:active {
    cursor: grabbing;
}

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

.feature-card .feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-card .feature-icon.blue {
    background: #e3f2fd;
    color: var(--primary);
}

.feature-card .feature-icon.indigo {
    background: #e8eaf6;
    color: #5C6BC0;
}

.feature-card .feature-icon.cyan {
    background: #e0f7fa;
    color: #26C6DA;
}

.feature-card .feature-icon.amber {
    background: #fff8e1;
    color: #FFB300;
}

.feature-card .feature-icon.purple {
    background: #f3e5f5;
    color: #AB47BC;
}

.feature-card .feature-icon.green {
    background: #e8f5e9;
    color: #66BB6A;
}

.feature-card h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}

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

.screenshots {
    background: var(--bg-card);
}

.screenshots-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: 8px 0 20px;
    scrollbar-width: none;
    cursor: grab;
    flex-wrap: nowrap;
    -ms-overflow-style: none;
    user-select: none;
    -webkit-user-select: none;
}

.screenshots-scroll.dragging {
    scroll-snap-type: none;
    cursor: grabbing;
}

.screenshots-scroll.dragging * {
    pointer-events: none;
}

.screenshots-scroll:active {
    cursor: grabbing;
}

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

.screenshots-scroll img {
    flex-shrink: 0;
    width: 280px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    scroll-snap-align: start;
    transition: var(--transition);
    user-select: none;
    pointer-events: none;
}

.ranking {
    background: var(--bg-card);
}

.ranking-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.ranking-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    border: 1px solid var(--border);
}

.ranking-header {
    background: var(--primary);
    padding: 18px 20px;
    text-align: center;
}

.ranking-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 4px;
}

.ranking-header p {
    font-size: 12px;
    color: rgba(255,255,255,0.8);
    margin: 0;
}

.ranking-list {
    padding: 8px 0;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    transition: var(--transition);
}

.ranking-item:hover {
    background: var(--bg);
}

.ranking-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.ranking-num.top {
    background: #ff6b6b;
    color: #fff;
}

.ranking-item:nth-child(2) .ranking-num.top {
    background: #ff9500;
}

.ranking-item:nth-child(3) .ranking-num.top {
    background: #ffc107;
}

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

.ranking-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
}

.ranking-meta {
    font-size: 12px;
    color: var(--text-muted);
}

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

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.review-card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
    border: 1px solid var(--border);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

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

.avatar-text {
    color: #fff;
    font-size: 14px;
    font-weight: 600;
}

.review-user {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

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

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

.review-rating {
    display: flex;
    gap: 2px;
}

.star {
    font-size: 14px;
    color: #ffc107;
}

.star:last-child:not(:first-child) {
    color: #ddd;
}

.review-content p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

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

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

.download .section-header p {
    color: rgba(255,255,255,0.8);
}

.download .section-divider {
    background: rgba(255,255,255,0.5);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid rgba(255,255,255,0.3);
    background: rgba(255,255,255,0.1);
    color: #fff;
    backdrop-filter: blur(4px);
}

.download-btn:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.6);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.download-btn i {
    display: block;
    width: 28px;
    height: 28px;
}

.download-btn.android i::before {
    content: "";
    display: block;
    width: 28px;
    height: 28px;
    background: #fff;
    mask-image: url("../icons/android.svg");
    -webkit-mask-image: url("../icons/android.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.download-btn.ios i::before {
    content: "";
    display: block;
    width: 28px;
    height: 28px;
    background: #fff;
    mask-image: url("../icons/apple.svg");
    -webkit-mask-image: url("../icons/apple.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.faq {
    background: transparent;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius);
    margin-bottom: 12px;
    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: 20px 24px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
    user-select: none;
}

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

.faq-question i {
    display: block;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.faq-question i::before {
    content: "";
    display: block;
    width: 20px;
    height: 20px;
    background: currentColor;
    mask-image: url("../icons/chevron-down.svg");
    -webkit-mask-image: url("../icons/chevron-down.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

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

.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.8;
}

.footer {
    background: var(--accent);
    color: rgba(255,255,255,0.7);
    padding: 32px 0;
    text-align: center;
    font-size: 13px;
    line-height: 2;
}

.footer .footer-brand {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 8px;
}

.footer a {
    color: rgba(255,255,255,0.9);
    transition: var(--transition);
}

.footer a:hover {
    color: #fff;
}

.footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background 0.25s ease;
    z-index: 999;
    border: none;
    -webkit-tap-highlight-color: transparent;
    box-shadow: 0 4px 16px rgba(33,150,243,0.35);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.back-to-top i {
    display: block;
    width: 22px;
    height: 22px;
}

.back-to-top i::before {
    content: "";
    display: block;
    width: 22px;
    height: 22px;
    background: #fff;
    mask-image: url("../icons/chevron-up.svg");
    -webkit-mask-image: url("../icons/chevron-up.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}


.search-btn i {
    display: block;
    width: 18px;
    height: 18px;
}
.search-btn i::before {
    content: "";
    display: block;
    width: 18px;
    height: 18px;
    background: #fff;
    mask-image: url("../icons/search.svg");
    -webkit-mask-image: url("../icons/search.svg");
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}

.intro-feature-icon i {
    display: block;
    width: 20px;
    height: 20px;
}
.intro-feature-icon i::before {
    content: "";
    display: block;
    width: 20px;
    height: 20px;
    background: #fff;
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}
.icon-check-circle::before {
    mask-image: url("../icons/check-circle.svg");
    -webkit-mask-image: url("../icons/check-circle.svg");
}
.icon-star-intro::before {
    mask-image: url("../icons/star.svg");
    -webkit-mask-image: url("../icons/star.svg");
}
.icon-zap-intro::before {
    mask-image: url("../icons/zap.svg");
    -webkit-mask-image: url("../icons/zap.svg");
}

.feature-card .feature-icon i {
    display: block;
    width: 28px;
    height: 28px;
}
.feature-card .feature-icon i::before {
    content: "";
    display: block;
    width: 28px;
    height: 28px;
    mask-size: contain;
    -webkit-mask-size: contain;
    mask-repeat: no-repeat;
    -webkit-mask-repeat: no-repeat;
    mask-position: center;
    -webkit-mask-position: center;
}
.icon-book-f::before {
    mask-image: url("../icons/book.svg");
    -webkit-mask-image: url("../icons/book.svg");
    background: var(--primary);
}
.icon-trending-up::before {
    mask-image: url("../icons/trending-up.svg");
    -webkit-mask-image: url("../icons/trending-up.svg");
    background: #5C6BC0;
}
.icon-download-cloud::before {
    mask-image: url("../icons/download-cloud.svg");
    -webkit-mask-image: url("../icons/download-cloud.svg");
    background: #26C6DA;
}
.icon-star::before {
    mask-image: url("../icons/star.svg");
    -webkit-mask-image: url("../icons/star.svg");
    background: #F59E0B;
}
.icon-moon-f::before {
    mask-image: url("../icons/moon.svg");
    -webkit-mask-image: url("../icons/moon.svg");
    background: #8B5CF6;
}
.icon-activity::before {
    mask-image: url("../icons/activity.svg");
    -webkit-mask-image: url("../icons/activity.svg");
    background: #10B981;
}

@media (max-width: 768px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero .container {
        flex-direction: column;
        align-items: flex-start;
        gap: 32px;
    }

    .hero-left {
        text-align: center;
    }

    .hero-right {
        width: 100%;
        flex: none;
    }

    .phone-mockup {
        width: 200px;
    }

    .floating-badge {
        font-size: 11px;
        padding: 6px 10px;
    }

    .badge-top-left {
        left: 0;
    }

    .badge-top-right {
        right: 0;
    }

    .badge-bottom-left {
        left: 0;
    }

    .badge-bottom-right {
        right: 0;
    }

    .hero-logo {
        margin: 0 auto 24px;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero .subtitle {
        font-size: 16px;
        padding: 0 16px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero .hero-stats {
        justify-content: center;
        gap: 24px;
    }

    .hero .hero-stats .stat-item {
        text-align: center;
    }

    .hero .hero-stats .stat-num {
        font-size: 28px;
    }

    .section {
        padding: 56px 0;
    }

    .section-header h2 {
        font-size: 26px;
    }

    .intro .container {
        flex-direction: column-reverse;
        gap: 32px;
    }

    .intro-right {
        width: 100%;
        flex: none;
    }

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

    .feature-card {
        padding: 24px 18px;
    }

    .feature-card .feature-icon {
        width: 48px;
        height: 48px;
        margin-bottom: 14px;
        font-size: 22px;
    }

    .feature-card h4 {
        font-size: 16px;
    }

    .feature-card p {
        font-size: 13px;
    }

    .screenshots-scroll img {
        width: 200px;
    }

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

    .ranking-card {
        max-width: 100%;
        margin: 0;
    }

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

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

    .search-box {
        display: none;
    }

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

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        width: 100%;
        background: rgba(255,255,255,0.97);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid var(--border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        pointer-events: none;
    }

    .nav-menu.open {
        max-height: 400px;
        pointer-events: auto;
    }

    .nav-menu ul {
        flex-direction: column;
        padding: 12px 20px;
        gap: 0;
    }

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

    .nav-menu ul li a {
        display: block;
        padding: 14px 16px;
        font-size: 16px;
        border-radius: 8px;
    }

    .faq-question {
        padding: 16px 20px;
        font-size: 15px;
    }

    .faq-answer-inner {
        padding: 0 20px 16px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }

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

    .hero .hero-stats .stat-num {
        font-size: 24px;
    }

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

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

    .download-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .screenshots-scroll img {
        width: 230px;
    }

    .section-header h2 {
        font-size: 22px;
    }

    .intro-text h3 {
        font-size: 22px;
    }

    .footer .footer-links {
        gap: 16px;
    }
}