/* ============================================
   JM漫画 - 主样式文件
   主题：深红 × 黑金 高级风格
   参考：qqmh.com.cn 简洁结构
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
    /* 主色调 - 深红×黑金 */
    --primary: #DC2626;
    --primary-dark: #991B1B;
    --primary-light: #FCA5A5;
    --secondary: #F59E0B;
    --secondary-dark: #D97706;
    --accent: #FCD34D;
    --gradient-main: linear-gradient(135deg, #DC2626 0%, #F59E0B 100%);
    --gradient-hero: linear-gradient(180deg, #140808 0%, #1F0D0D 50%, #140808 100%);

    /* 背景色 - 偏红深色 */
    --bg-dark: #0D0808;
    --bg-card: #1A1010;
    --bg-card-hover: #241515;
    --bg-elevated: #120A0A;

    /* 文字色 */
    --text-primary: #FAF5F5;
    --text-secondary: #C2B0B0;
    --text-muted: #8A6E6E;
    --text-inverse: #0D0808;

    /* 边框 */
    --border-color: rgba(220, 38, 38, 0.15);
    --border-hover: rgba(220, 38, 38, 0.4);

    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(220, 38, 38, 0.3);
    --shadow-gold: 0 0 30px rgba(245, 158, 11, 0.3);

    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;

    /* 过渡 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 导航高度 */
    --nav-height: 72px;
}

/* ---------- 重置样式 ---------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

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

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

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

ul, ol {
    list-style: none;
}

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

input {
    font-family: inherit;
    outline: none;
    border: none;
}

/* ---------- 通用容器 ---------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- 通用按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition-normal);
    white-space: nowrap;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 4px 20px rgba(220, 38, 38, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(220, 38, 38, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-outline:hover {
    background: rgba(220, 38, 38, 0.1);
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 17px;
}

.btn-lg svg {
    width: 20px;
    height: 20px;
}

.btn-xl {
    padding: 20px 48px;
    font-size: 19px;
}

.btn-xl svg {
    width: 22px;
    height: 22px;
}

.btn-sm {
    padding: 10px 22px;
    font-size: 14px;
}

/* ---------- 区块通用头部 ---------- */
.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary-light);
    background: rgba(220, 38, 38, 0.1);
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: 16px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 14px;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ============================================
   导航栏
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(13, 8, 8, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(13, 8, 8, 0.95);
    border-bottom-color: var(--border-color);
    box-shadow: var(--shadow-md);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 2px solid var(--primary);
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 500;
    position: relative;
    padding: 4px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    transition: width var(--transition-normal);
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-download {
    padding: 10px 24px;
    font-size: 14px;
}

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

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

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ============================================
   Hero 首屏区
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-height) + 40px) 0 80px;
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero-bg-image {
    position: absolute;
    inset: 0;
    background-image: url('../img/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    filter: blur(2px);
    pointer-events: none;
}

.hero-bg-overlay {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(220, 38, 38, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(220, 38, 38, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-tags-top {
    display: flex;
    gap: 10px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.hero-tags-top span {
    padding: 6px 16px;
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 13px;
    color: var(--primary-light);
    font-weight: 500;
}

.hero-title {
    font-size: 56px;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 60%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
}

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

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}

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

/* Hero 手机展示 */
.hero-phone {
    position: relative;
    display: flex;
    justify-content: center;
}

.phone-frame {
    position: relative;
    width: 280px;
    height: 580px;
    background: #2e1515;
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border: 2px solid rgba(220, 38, 38, 0.3);
    overflow: hidden;
}

.phone-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 28px;
    background: #0d0808;
    border-radius: 0 0 18px 18px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 30px;
}

/* 浮动卡片 */
.phone-float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: rgba(26, 16, 16, 0.95);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.float-1 {
    top: 15%;
    left: -20px;
    animation-delay: 0s;
}

.float-2 {
    bottom: 20%;
    right: -20px;
    animation-delay: 1.5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.float-icon {
    font-size: 28px;
}

.float-text strong {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

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

/* ============================================
   数据统计区
   ============================================ */
.stats-section {
    padding: 80px 0;
    background: var(--bg-dark);
    position: relative;
}

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

.stat-card {
    text-align: center;
    padding: 36px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

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

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: 8px;
    display: inline;
}

.stat-suffix {
    display: inline;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-light);
    margin-left: 2px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ============================================
   产品亮点（横向编号布局）
   ============================================ */
.features-section {
    padding: 100px 0;
    background: var(--bg-elevated);
}

.features-list {
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.feature-item {
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    gap: 30px;
    align-items: center;
    padding: 36px 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-main);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.feature-item:hover {
    transform: translateX(8px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.feature-item:hover::before {
    transform: scaleY(1);
}

.feature-num {
    font-size: 56px;
    font-weight: 900;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    text-align: center;
}

.feature-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-icon-wrap {
    display: flex;
    justify-content: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.15), rgba(245, 158, 11, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
}

.feature-icon svg {
    width: 30px;
    height: 30px;
}

/* ============================================
   界面预览区
   ============================================ */
.preview-section {
    padding: 100px 0;
    background: var(--bg-dark);
}

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

.preview-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.preview-item .phone-frame {
    width: 240px;
    height: 500px;
}

.preview-caption {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

/* ============================================
   FAQ 常见疑问
   ============================================ */
.faq-section {
    padding: 100px 0;
    background: var(--bg-elevated);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-fast);
}

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

.faq-item.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 22px 28px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    text-align: left;
    transition: color var(--transition-fast);
}

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

.faq-arrow {
    width: 12px;
    height: 12px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
    margin-left: 16px;
}

.faq-item.active .faq-arrow {
    transform: rotate(-135deg);
    border-color: var(--primary-light);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

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

.faq-answer p {
    padding: 0 28px 24px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ============================================
   下载 CTA 区
   ============================================ */
.cta-section {
    padding: 80px 0;
    background: var(--bg-dark);
}

.cta-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 50px 60px;
    background: var(--gradient-main);
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 8px;
    line-height: 1.3;
}

.cta-content p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
}

.cta-box .btn-xl {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.cta-box .btn-xl:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* ============================================
   页脚
   ============================================ */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

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

.footer-logo img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    border: 2px solid var(--primary);
}

.footer-logo span {
    font-size: 18px;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 320px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 5px 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.footer-disclaimer {
    font-size: 12px !important;
    color: var(--text-muted) !important;
    opacity: 0.7;
}

/* ============================================
   返回顶部按钮
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-main);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 999;
}

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

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.back-to-top svg {
    width: 22px;
    height: 22px;
}

/* ============================================
   滚动动画
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

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

/* 平板 */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 50px;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-phone {
        order: 2;
    }

    .hero-tags-top, .hero-actions, .hero-meta {
        justify-content: center;
    }

    .float-1 { left: 0; }
    .float-2 { right: 0; }

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

    .feature-item {
        grid-template-columns: 60px 1fr;
        padding: 28px 30px;
    }

    .feature-icon-wrap {
        display: none;
    }

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

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .cta-box {
        flex-direction: column;
        text-align: center;
        padding: 40px;
    }
}

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

    .container {
        padding: 0 16px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(13, 8, 8, 0.98);
        backdrop-filter: blur(20px);
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 14px 0;
        border-bottom: 1px solid var(--border-color);
        width: 100%;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-download {
        display: none;
    }

    .hero {
        padding: calc(var(--nav-height) + 30px) 0 60px;
        min-height: auto;
    }

    .hero-title {
        font-size: 38px;
    }

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

    .btn-lg {
        padding: 14px 28px;
        font-size: 15px;
    }

    .btn-xl {
        padding: 16px 36px;
        font-size: 16px;
    }

    .phone-frame {
        width: 240px;
        height: 500px;
    }

    .preview-item .phone-frame {
        width: 220px;
        height: 460px;
    }

    .phone-float-card {
        padding: 10px 14px;
    }

    .float-icon {
        font-size: 22px;
    }

    .float-text strong {
        font-size: 12px;
    }

    .float-text span {
        font-size: 10px;
    }

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

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

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

    .stat-card {
        padding: 24px 12px;
    }

    .stat-number {
        font-size: 30px;
    }

    .stat-suffix {
        font-size: 16px;
    }

    .feature-item {
        grid-template-columns: 50px 1fr;
        gap: 16px;
        padding: 24px 20px;
    }

    .feature-num {
        font-size: 40px;
    }

    .feature-content h3 {
        font-size: 18px;
    }

    .feature-content p {
        font-size: 14px;
    }

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

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

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

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

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 32px;
    }

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

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

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

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

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

    .cta-box {
        padding: 30px 20px;
    }

    .cta-content h2 {
        font-size: 24px;
    }
}