@charset "utf-8";
:root {
    --color-primary: #6C5CE7;
    --color-primary-dark: #5A4BD1;
    --color-primary-light: #A29BFE;
    --color-secondary: #FF6B6B;
    --color-accent: #00CEC9;
    --color-bg: #F8F9FE;
    --color-card: #FFFFFF;
    --color-text: #2D3436;
    --color-text-light: #636E72;
    --color-text-muted: #B2BEC3;
    --color-border: #E8ECF1;
    --color-star: #FFB347;
    --max-width: 1200px;
    --nav-height: 70px;
    --radius: 12px;
    --shadow: 0 4px 20px rgba(108,92,231,0.10);
    --shadow-hover: 0 8px 32px rgba(108,92,231,0.16);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    overflow-x: hidden;
    min-width: 320px;
}
/* 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;
}
/* 星星样式结束 */
a {
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
    text-decoration: none;
    color: inherit;
}
a:active, a:focus { outline: none; background: transparent !important; -webkit-tap-highlight-color: transparent !important; }
i[class^="icon-"], i[class*=" icon-"] { display: inline-flex; align-items: center; justify-content: center; vertical-align: middle; font-style: normal; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section-title { text-align: center; margin-bottom: 16px; }
.section-title h2 { font-size: 2rem; font-weight: 700; color: var(--color-text); position: relative; display: inline-block; }
.section-title h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 2px;
    margin: 12px auto 0;
}
.section-title .subtitle { display: block; font-size: 1rem; color: var(--color-text-light); margin-top: 10px; font-weight: 400; }
.header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 8px rgba(0,0,0,0.06);
    z-index: 1000;
    will-change: box-shadow;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--nav-height); max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.4rem; font-weight: 700; color: var(--color-primary); }
.logo .logo-img { width: 40px; height: 40px; object-fit: contain; transition: transform 0.3s ease; }
.logo:hover .logo-img { transform: rotate(-8deg) scale(1.08); }
.logo span { background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-list { display: flex; align-items: center; list-style: none; gap: 8px; }
.nav-list > li > a { display: block; padding: 10px 18px; border-radius: 8px; font-size: 0.95rem; font-weight: 500; color: var(--color-text); transition: var(--transition); white-space: nowrap; }
.nav-list > li > a:hover, .nav-list > li > a.active { color: var(--color-primary); background: rgba(108,92,231,0.08); }
.hamburger { display: none; flex-direction: column; justify-content: center; align-items: center; width: 40px; height: 40px; border: none; background: none; cursor: pointer; z-index: 1001; -webkit-tap-highlight-color: transparent; }
.hamburger i { display: flex; align-items: center; justify-content: center; width: 24px; height: 24px; transition: var(--transition); }
.hero {
    padding: calc(var(--nav-height) + 60px) 0 80px;
    background: linear-gradient(135deg, #EDE7FF 0%, #FFF0F0 50%, #E0FBFA 100%);
    position: relative;
    overflow: hidden;
}
.hero::before { content: ''; position: absolute; top: -120px; right: -80px; width: 400px; height: 400px; background: radial-gradient(circle, rgba(108,92,231,0.12) 0%, transparent 70%); border-radius: 50%; }
.hero::after { content: ''; position: absolute; bottom: -100px; left: -60px; width: 350px; height: 350px; background: radial-gradient(circle, rgba(255,107,107,0.10) 0%, transparent 70%); border-radius: 50%; }
.hero-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; position: relative; z-index: 1; }
.hero-text { flex: 1; max-width: 560px; }
.hero-text h1 { font-size: 2.8rem; font-weight: 800; line-height: 1.3; margin-bottom: 20px; }
.hero-text h1 .highlight { background: linear-gradient(135deg, var(--color-primary), var(--color-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-text p { font-size: 1.1rem; color: var(--color-text-light); margin-bottom: 32px; line-height: 1.8; }
.hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-size: 1rem; font-weight: 600; border: none; cursor: pointer; transition: var(--transition); -webkit-tap-highlight-color: transparent; }
.btn-primary { background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); color: #FFF; box-shadow: 0 4px 16px rgba(108,92,231,0.35); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(108,92,231,0.45); }
.btn-outline { background: #FFF; color: var(--color-primary); border: 2px solid var(--color-primary); }
.btn-outline:hover { background: var(--color-primary); color: #FFF; transform: translateY(-2px); }
.btn i { display: inline-flex; align-items: center; justify-content: center; width: 20px; height: 20px; }
.hero-image { flex: 1; max-width: 480px; text-align: center; }
.hero-image .phone-mockup { width: 100%; max-width: 320px; height: auto; border-radius: 28px; box-shadow: 0 20px 60px rgba(108,92,231,0.18); transition: transform 0.5s ease; }
.hero-image .phone-mockup:hover { transform: translateY(-8px); }
.hero-stats { display: flex; gap: 40px; margin-top: 36px; padding-top: 24px; border-top: 1px solid rgba(108,92,231,0.12); }
.hero-update { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; padding: 6px 16px; border-radius: 20px; background: rgba(108,92,231,0.08); font-size: 0.85rem; font-weight: 500; color: var(--color-primary); }
.hero-update i { display: flex; align-items: center; justify-content: center; width: 16px; height: 16px; }
.hero-stats .stat-item { text-align: center; }
.hero-stats .stat-num { display: block; font-size: 1.8rem; font-weight: 800; color: var(--color-primary); }
.hero-stats .stat-label { font-size: 0.85rem; color: var(--color-text-light); }
.features { padding: 80px 0; background: #FFF; }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.feature-card { background: var(--color-card); border-radius: var(--radius); padding: 36px 28px; text-align: center; border: 1px solid var(--color-border); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--color-primary), var(--color-accent)); opacity: 0; transition: opacity 0.3s ease; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-card .icon-wrap { display: inline-flex; align-items: center; justify-content: center; width: 64px; height: 64px; border-radius: 18px; margin-bottom: 20px; transition: var(--transition); }
.feature-card:nth-child(1) .icon-wrap { background: rgba(108,92,231,0.10); }
.feature-card:nth-child(2) .icon-wrap { background: rgba(255,107,107,0.10); }
.feature-card:nth-child(3) .icon-wrap { background: rgba(0,206,201,0.10); }
.feature-card:nth-child(4) .icon-wrap { background: rgba(255,179,71,0.12); }
.feature-card:nth-child(5) .icon-wrap { background: rgba(108,92,231,0.10); }
.feature-card:nth-child(6) .icon-wrap { background: rgba(255,107,107,0.10); }
.feature-card .icon-wrap i { display: flex; align-items: center; justify-content: center; width: 32px; height: 32px; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; color: var(--color-text); }
.feature-card p { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.7; }
@media (max-width: 768px) {
    .features-grid {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 14px;
        padding: 4px 0 12px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    .features-grid::-webkit-scrollbar { display: none; }
    .feature-card { flex: 0 0 auto; min-width: 260px; max-width: 300px; scroll-snap-align: start; }
}
.reviews { padding: 80px 0; background: linear-gradient(180deg, #FFF 0%, #F8F9FE 100%); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card { background: #FFF; border-radius: var(--radius); padding: 24px 20px; border: 1px solid var(--color-border); transition: var(--transition); position: relative; }
.review-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--color-primary-light); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); color: #FFF; font-size: 1rem; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.review-avatar i { display: flex; align-items: center; justify-content: center; width: 22px; height: 22px; }
.review-avatar.green { background: linear-gradient(135deg, #00CEC9, #81ECEC); }
.review-avatar.orange { background: linear-gradient(135deg, #FFB347, #FFD89B); }
.review-avatar.blue { background: linear-gradient(135deg, #0984E3, #74B9FF); }
.review-avatar.purple { background: linear-gradient(135deg, #A29BFE, #D4CFFF); }
.review-avatar.pink { background: linear-gradient(135deg, #FF6B6B, #FFB8B8); }
.review-info h4 { font-size: 0.95rem; font-weight: 600; color: var(--color-text); margin-bottom: 2px; }
.review-stars { display: flex; gap: 2px; }
.review-stars i { display: flex; width: 14px; height: 14px; }
.review-text { font-size: 0.88rem; line-height: 1.75; color: var(--color-text-light); margin-bottom: 12px; }
.review-date { font-size: 0.78rem; color: var(--color-text-muted); }
.screenshots { padding: 80px 0; background: linear-gradient(180deg, #F8F9FE 0%, #FFF 100%); }
.carousel-wrap { position: relative; max-width: 500px; margin: 0 auto; overflow: hidden; }
.carousel-track { display: flex; transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1); }
.carousel-slide { min-width: 100%; display: flex; justify-content: center; padding: 10px 0; }
.carousel-slide img { width: 100%; max-width: 300px; height: auto; aspect-ratio: 9 / 16; object-fit: cover; border-radius: 18px; box-shadow: 0 8px 30px rgba(0,0,0,0.10); transition: transform 0.3s ease; }
.carousel-slide img:hover { transform: scale(1.04); }
.carousel-btn { position: absolute; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border-radius: 50%; border: none; background: rgba(255,255,255,0.9); box-shadow: 0 2px 12px rgba(0,0,0,0.10); cursor: pointer; transition: var(--transition); display: flex; align-items: center; justify-content: center; z-index: 2; -webkit-tap-highlight-color: transparent; }
.carousel-btn:hover { background: var(--color-primary); box-shadow: 0 4px 20px rgba(108,92,231,0.3); }
.carousel-btn:hover i { filter: brightness(0) invert(1); }
.carousel-btn-prev { left: 0; }
.carousel-btn-next { right: 0; }
.carousel-btn i { display: flex; align-items: center; justify-content: center; width: 20px; height: 20px; }
.carousel-dots { display: flex; justify-content: center; gap: 10px; margin-top: 28px; }
.carousel-dots .dot { width: 12px; height: 12px; border-radius: 50%; background: var(--color-border); cursor: pointer; transition: var(--transition); border: none; -webkit-tap-highlight-color: transparent; }
.carousel-dots .dot.active { background: var(--color-primary); transform: scale(1.3); }
.advantages { padding: 80px 0; background: #FFF; }
.advantages-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.advantage-card { display: flex; align-items: flex-start; gap: 20px; padding: 28px; border-radius: var(--radius); background: var(--color-bg); transition: var(--transition); border: 1px solid transparent; }
.advantage-card:hover { background: #FFF; border-color: var(--color-border); box-shadow: var(--shadow); transform: translateX(4px); }
.advantage-card .adv-icon { flex-shrink: 0; width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); }
.advantage-card .adv-icon i { display: flex; align-items: center; justify-content: center; width: 26px; height: 26px; filter: brightness(0) invert(1); }
.advantage-card .adv-content h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 6px; }
.advantage-card .adv-content p { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.6; }
.download { padding: 80px 0; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark)); position: relative; overflow: hidden; }
.download::before { content: ''; position: absolute; top: -100px; right: -100px; width: 300px; height: 300px; background: rgba(255,255,255,0.06); border-radius: 50%; }
.download::after { content: ''; position: absolute; bottom: -80px; left: -80px; width: 250px; height: 250px; background: rgba(255,255,255,0.04); border-radius: 50%; }
.download .section-title h2 { color: #FFF; }
.download .section-title h2::after { background: rgba(255,255,255,0.5); }
.download .section-title .subtitle { color: rgba(255,255,255,0.8); }
.download .container { position: relative; z-index: 1; }
.download-buttons { display: flex; justify-content: center; gap: 28px; flex-wrap: wrap; margin-top: 40px; }
.download-btn { display: inline-flex; align-items: center; gap: 12px; padding: 18px 40px; border-radius: 50px; font-size: 1.1rem; font-weight: 700; transition: var(--transition); -webkit-tap-highlight-color: transparent; position: relative; overflow: hidden; }
.download-btn-android { background: #FFF; color: var(--color-primary); box-shadow: 0 6px 24px rgba(0,0,0,0.15); }
.download-btn-android:hover { transform: translateY(-4px); box-shadow: 0 12px 36px rgba(0,0,0,0.25); }
.download-btn-ios { background: rgba(255,255,255,0.15); color: #FFF; border: 2px solid rgba(255,255,255,0.4); backdrop-filter: blur(8px); }
.download-btn-ios:hover { background: rgba(255,255,255,0.25); border-color: rgba(255,255,255,0.7); transform: translateY(-4px); }
.download-btn i { display: flex; align-items: center; justify-content: center; width: 26px; height: 26px; }
.download-version { text-align: center; margin-top: 24px; color: rgba(255,255,255,0.7); font-size: 0.9rem; }
.faq { padding: 80px 0; background: var(--color-bg); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { background: #FFF; border-radius: var(--radius); margin-bottom: 14px; border: 1px solid var(--color-border); overflow: hidden; transition: var(--transition); }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; font-size: 1rem; font-weight: 600; color: var(--color-text); background: none; border: none; cursor: pointer; text-align: left; -webkit-tap-highlight-color: transparent; }
.faq-question i { display: flex; align-items: center; justify-content: center; width: 20px; height: 20px; transition: transform 0.35s ease; flex-shrink: 0; margin-left: 12px; }
.faq-item.open .faq-question i { transform: rotate(180deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease; }
.faq-item.open .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; font-size: 0.92rem; color: var(--color-text-light); line-height: 1.8; }
.footer { background: var(--color-text); color: #B2BEC3; padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand .logo span { -webkit-text-fill-color: #FFF; color: #FFF; }
.footer-brand p { font-size: 0.88rem; line-height: 1.6; color: #636E72; }
.footer-col h4 { color: #FFF; font-size: 1rem; font-weight: 600; margin-bottom: 16px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.88rem; color: #636E72; transition: var(--transition); }
.footer-col ul li a:hover { color: var(--color-primary-light); }
.footer-bottom { padding-top: 24px; text-align: center; font-size: 0.82rem; color: #636E72; }
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.65); z-index: 2000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal-content { background: #FFF; border-radius: var(--radius); padding: 32px; max-width: 500px; width: 90%; position: relative; transform: translateY(20px); transition: transform 0.3s ease; }
.modal-overlay.open .modal-content { transform: translateY(0); }
.modal-close { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; border-radius: 50%; border: none; background: var(--color-bg); cursor: pointer; display: flex; align-items: center; justify-content: center; transition: var(--transition); -webkit-tap-highlight-color: transparent; }
.modal-close:hover { background: var(--color-secondary); }
.modal-close:hover i { filter: brightness(0) invert(1); }
.modal-close i { display: flex; align-items: center; justify-content: center; width: 16px; height: 16px; }
.modal-body { text-align: center; }
.modal-body img { width: 100%; max-width: 280px; border-radius: 16px; margin-bottom: 20px; box-shadow: var(--shadow); }
.modal-body h3 { font-size: 1.3rem; margin-bottom: 10px; color: var(--color-primary); }
.modal-body p { font-size: 0.92rem; color: var(--color-text-light); line-height: 1.6; }
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }
.back-to-top { position: fixed; bottom: 32px; right: 32px; width: 46px; height: 46px; border-radius: 50%; background: var(--color-primary); color: #FFF; border: none; box-shadow: 0 4px 16px rgba(108,92,231,0.35); cursor: pointer; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition); z-index: 999; -webkit-tap-highlight-color: transparent; }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-dark); transform: translateY(-4px); }
.back-to-top i { display: flex; align-items: center; justify-content: center; width: 20px; height: 20px; filter: brightness(0) invert(1); transform: rotate(180deg); }
@media (max-width: 1200px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-text h1 { font-size: 2.4rem; }
}
@media (max-width: 768px) {
    :root { --nav-height: 60px; }
    .hamburger { display: flex; }
    .nav-menu { position: fixed; top: 0; right: -100%; width: 75%; max-width: 320px; height: 100vh; background: #FFF; box-shadow: -4px 0 20px rgba(0,0,0,0.10); transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1); z-index: 1000; padding: 80px 28px 28px; }
    .nav-menu.open { right: 0; }
    .nav-list { flex-direction: column; gap: 4px; }
    .nav-list > li { width: 100%; }
    .nav-list > li > a { display: block; padding: 14px 18px; font-size: 1rem; border-radius: 10px; }
    .menu-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 999; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0.3s ease; }
    .menu-overlay.open { opacity: 1; visibility: visible; }
    .hero-inner { flex-direction: column; text-align: center; gap: 32px; }
    .hero-text h1 { font-size: 2rem; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; gap: 30px; }
    .feature-card { padding: 28px 20px; }
    .carousel-slide img { max-width: 220px; }
    .reviews-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .advantages-grid { grid-template-columns: 1fr; }
    .download-buttons { flex-direction: column; align-items: center; }
    .download-btn { width: 100%; max-width: 360px; justify-content: center; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); gap: 18px; }
    .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .section-title h2 { font-size: 1.5rem; }
    .hero { padding: calc(var(--nav-height) + 40px) 0 50px; }
    .hero-text h1 { font-size: 1.7rem; }
    .hero-text p { font-size: 0.95rem; }
    .hero-stats { flex-wrap: wrap; gap: 20px; }
    .hero-stats .stat-num { font-size: 1.4rem; }
    .btn { padding: 12px 24px; font-size: 0.9rem; }
    .carousel-slide img { max-width: 180px; }
    .carousel-btn { width: 36px; height: 36px; }
    .reviews-grid { grid-template-columns: 1fr; gap: 12px; }
    .advantage-card { flex-direction: column; align-items: center; text-align: center; }
    .advantage-card .adv-content { text-align: center; }
    .download-btn { padding: 16px 28px; font-size: 1rem; }
    .faq-question { padding: 16px 18px; font-size: 0.93rem; }
    .footer-grid { grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .footer-brand { grid-column: 1 / -1; }
    .back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }
}