/* ============================================
   哔咔漫画 - 主样式表
   配色：玫红/粉色系（源于 App Logo）
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
    --primary: #E91E63;
    --primary-dark: #C2185B;
    --primary-light: #F06292;
    --primary-bg: #FCE4EC;
    --primary-bg-2: #F8BBD0;
    --gradient-primary: linear-gradient(135deg, #E91E63 0%, #F06292 100%);
    --gradient-hero: linear-gradient(135deg, #FCE4EC 0%, #FFFFFF 50%, #F8BBD0 100%);
    
    --text-primary: #1a1a2e;
    --text-secondary: #555577;
    --text-muted: #888899;
    --text-white: #ffffff;
    
    --bg-white: #ffffff;
    --bg-light: #fafafa;
    --bg-dark: #1a1a2e;
    
    --shadow-sm: 0 2px 8px rgba(233, 30, 99, 0.08);
    --shadow-md: 0 8px 24px rgba(233, 30, 99, 0.12);
    --shadow-lg: 0 20px 60px rgba(233, 30, 99, 0.18);
    --shadow-xl: 0 30px 80px rgba(233, 30, 99, 0.25);
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;
    
    --container: 1200px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- 基础重置 ---------- */
*,
*::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: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

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

/* ---------- 导航栏 ---------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(233, 30, 99, 0.08);
    transition: all var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-sm);
}

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

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

.nav-link {
    padding: 8px 18px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 100px;
    transition: all var(--transition);
}

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

.nav-download-btn {
    background: var(--gradient-primary);
    color: var(--text-white) !important;
    box-shadow: 0 4px 14px rgba(233, 30, 99, 0.35);
}

.nav-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(233, 30, 99, 0.45);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ---------- Hero 首屏 ---------- */
.hero {
    position: relative;
    min-height: 100vh;
    padding-top: 120px;
    padding-bottom: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(233, 30, 99, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(240, 98, 146, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -30px); }
}

.hero-content {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(233, 30, 99, 0.1);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(233, 30, 99, 0.2);
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

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

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.meta-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.meta-value {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary);
}

.meta-divider {
    width: 1px;
    height: 36px;
    background: rgba(233, 30, 99, 0.2);
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 100px;
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: 0 8px 24px rgba(233, 30, 99, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(233, 30, 99, 0.45);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: var(--text-white);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-num {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ---------- 截图叠加效果 ---------- */
.hero-right {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1200px;
}

.screenshot-stack {
    position: relative;
    width: 340px;
    height: 620px;
}

.phone-frame {
    position: absolute;
    width: 280px;
    height: 560px;
    background: var(--bg-white);
    border-radius: 40px;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 6px solid #2a2a3e;
}

.phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 26px;
    background: #2a2a3e;
    border-radius: 0 0 18px 18px;
    z-index: 10;
}

.phone-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    background: var(--primary-bg);
    background-image: 
        linear-gradient(135deg, rgba(233, 30, 99, 0.1) 0%, rgba(240, 98, 146, 0.2) 100%),
        repeating-linear-gradient(45deg, transparent, transparent 20px, rgba(233, 30, 99, 0.05) 20px, rgba(233, 30, 99, 0.05) 40px);
}

.phone-label {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 20px;
    background: rgba(233, 30, 99, 0.9);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 100px;
    backdrop-filter: blur(10px);
    white-space: nowrap;
}

.phone-1 {
    top: 0;
    left: 0;
    z-index: 3;
    transform: rotate(-8deg) scale(1);
    animation: phoneFloat1 6s ease-in-out infinite;
}

.phone-2 {
    top: 40px;
    left: 30px;
    z-index: 2;
    transform: rotate(2deg) scale(0.9);
    opacity: 0.85;
    animation: phoneFloat2 7s ease-in-out infinite;
}

.phone-3 {
    top: 80px;
    left: 60px;
    z-index: 1;
    transform: rotate(10deg) scale(0.8);
    opacity: 0.65;
    animation: phoneFloat3 8s ease-in-out infinite;
}

@keyframes phoneFloat1 {
    0%, 100% { transform: rotate(-8deg) translateY(0); }
    50% { transform: rotate(-8deg) translateY(-15px); }
}

@keyframes phoneFloat2 {
    0%, 100% { transform: rotate(2deg) translateY(0); }
    50% { transform: rotate(2deg) translateY(-10px); }
}

@keyframes phoneFloat3 {
    0%, 100% { transform: rotate(10deg) translateY(0); }
    50% { transform: rotate(10deg) translateY(-8px); }
}

/* 悬停效果：鼠标放到哪张图就看哪张图 */
.phone-frame:hover {
    z-index: 10 !important;
    transform: rotate(0deg) scale(1.08) translateY(-20px) !important;
    opacity: 1 !important;
    box-shadow: 0 35px 90px rgba(233, 30, 99, 0.35);
}

/* 点击激活效果 */
.phone-frame.active {
    z-index: 10 !important;
    transform: rotate(0deg) scale(1.08) translateY(-20px) !important;
    opacity: 1 !important;
    box-shadow: 0 35px 90px rgba(233, 30, 99, 0.35);
}

/* ---------- 通用 Section ---------- */
section {
    padding: 100px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 800;
    margin-bottom: 16px;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- 功能优点 ---------- */
.features {
    background: var(--bg-light);
}

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

.feature-card {
    background: var(--bg-white);
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(233, 30, 99, 0.06);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

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

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

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    transition: all var(--transition);
}

.feature-card:hover .feature-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.1) rotate(-5deg);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---------- 用户评价 ---------- */
.reviews {
    background: var(--bg-white);
}

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

.review-card {
    background: var(--bg-light);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(233, 30, 99, 0.08);
    transition: all var(--transition);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: rgba(233, 30, 99, 0.2);
}

.review-stars {
    color: #FFB300;
    font-size: 1.1rem;
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.review-content {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 24px;
}

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

/* 用户头像：汉字头像，不使用 img 标签 */
.author-avatar {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
}

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

.author-name {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.author-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ---------- FAQ ---------- */
.faq {
    background: var(--primary-bg);
}

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

.faq-item {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: 24px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: all var(--transition);
}

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

.faq-icon {
    color: var(--primary);
    flex-shrink: 0;
    transition: transform var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.faq-answer p {
    padding: 0 28px 24px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ---------- 下载区域 ---------- */
.download {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.download-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    z-index: -1;
}

.download-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,255,255,0.15) 0%, transparent 60%);
    border-radius: 50%;
}

.download-bg::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -20%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    border-radius: 50%;
}

.download-container {
    position: relative;
    z-index: 1;
}

.download-content {
    text-align: center;
}

.white-tag {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.white-title {
    color: white;
}

.white-title .highlight {
    background: white;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.white-subtitle {
    color: rgba(255, 255, 255, 0.85);
}

.download-meta {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.meta-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: white;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 18px;
    padding: 22px 44px;
    background: white;
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    transition: all var(--transition);
    min-width: 240px;
}

.download-btn:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
}

.android-btn:hover {
    background: linear-gradient(135deg, #3DDC84 0%, #2BA863 100%);
    color: white;
}

.ios-btn:hover {
    background: linear-gradient(135deg, #555555 0%, #222222 100%);
    color: white;
}

.download-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-bg);
    color: var(--primary);
    border-radius: 14px;
    flex-shrink: 0;
    transition: all var(--transition);
}

.android-btn:hover .download-icon {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.ios-btn:hover .download-icon {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.download-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.download-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.download-platform {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

.android-btn:hover .download-label,
.ios-btn:hover .download-label {
    color: rgba(255, 255, 255, 0.8);
}

.android-btn:hover .download-platform,
.ios-btn:hover .download-platform {
    color: white;
}

.download-tip {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
}

/* ---------- 底部 ---------- */
.footer {
    background: var(--bg-dark);
    padding: 48px 0 24px;
}

.footer-container {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.footer-logo {
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: var(--gradient-primary);
}

.footer-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
}

.footer-copy {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- 滚动动画 ---------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ============================================
   响应式设计
   ============================================ */

/* 平板 */
@media (max-width: 1024px) {
    section {
        padding: 80px 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }
    
    .hero-left {
        order: 1;
        text-align: center;
    }
    
    .hero-right {
        order: 2;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-meta {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .screenshot-stack {
        width: 300px;
        height: 560px;
    }
    
    .phone-frame {
        width: 240px;
        height: 500px;
    }
}

/* 手机 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition);
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid rgba(233, 30, 99, 0.1);
    }
    
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        padding: 14px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }
    
    .hero {
        padding-top: 100px;
        padding-bottom: 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .hero-meta {
        flex-direction: column;
        gap: 16px;
    }
    
    .meta-divider {
        width: 60px;
        height: 1px;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-num {
        font-size: 1.3rem;
    }
    
    .btn {
        padding: 14px 28px;
        font-size: 0.95rem;
    }
    
    .screenshot-stack {
        width: 260px;
        height: 480px;
    }
    
    .phone-frame {
        width: 210px;
        height: 440px;
    }
    
    .phone-2 { left: 20px; }
    .phone-3 { left: 40px; }
    
    section {
        padding: 64px 0;
    }
    
    .section-header {
        margin-bottom: 48px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .download {
        padding: 80px 0;
    }
    
    .download-btn {
        width: 100%;
        max-width: 320px;
        padding: 18px 32px;
        justify-content: center;
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-links {
        gap: 20px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .screenshot-stack {
        width: 220px;
        height: 420px;
    }
    
    .phone-frame {
        width: 180px;
        height: 380px;
        border-width: 5px;
    }
    
    .phone-notch {
        width: 90px;
        height: 20px;
    }
    
    .feature-card {
        padding: 28px 24px;
    }
    
    .review-card {
        padding: 24px;
    }
    
    .faq-question {
        padding: 20px;
        font-size: 0.95rem;
    }
}

/* ---------- 打印样式 ---------- */
@media print {
    .navbar, .hero-right, .download {
        display: none;
    }
}