/* 比特浏览器 - 全局样式 */
/* 关键词：比特浏览器、比特浏览器官网、bitbrowser下载 */

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
    font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", Inter, system-ui, -apple-system, sans-serif;
    background-color: #0B1A3B;
    color: #E0E6ED;
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color 0.3s; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; margin-bottom: 1rem; }
h3 { font-size: 1.4rem; }
p { margin-bottom: 1rem; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
section { padding: 80px 0; }

/* === Color Variables === */
:root {
    --primary-dark: #0B1A3B;
    --accent-blue: #2D6CFF;
    --accent-blue-hover: #4A82FF;
    --accent-green: #00C48C;
    --accent-gold: #F5A623;
    --text-primary: #E0E6ED;
    --text-secondary: #8899AA;
    --card-bg: rgba(255,255,255,0.05);
    --card-border: rgba(255,255,255,0.08);
    --glass-bg: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.1);
}

/* === Navigation === */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(11,26,59,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    padding: 0 20px;
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.nav-logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-blue);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: #fff;
}
.nav-menu { display: flex; align-items: center; gap: 32px; }
.nav-menu > li { position: relative; }
.nav-menu > li > a {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 8px 0;
    transition: color 0.3s;
}
.nav-menu > li > a:hover { color: var(--accent-blue); }
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: -20px;
    background: rgba(15,30,60,0.98);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 0;
    min-width: 200px;
    display: none;
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
}
.nav-menu > li:hover .nav-dropdown { display: block; }
.nav-dropdown li a {
    display: block;
    padding: 10px 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all 0.3s;
}
.nav-dropdown li a:hover {
    color: #fff;
    background: rgba(45,108,255,0.1);
}
.nav-actions { display: flex; align-items: center; gap: 16px; }
.nav-actions .btn-login {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: 8px 16px;
}
.nav-actions .btn-login:hover { color: #fff; }
.btn-primary {
    display: inline-block;
    background: var(--accent-blue);
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover {
    background: var(--accent-blue-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(45,108,255,0.4);
}
.btn-secondary {
    display: inline-block;
    background: transparent;
    color: #fff;
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    border: 1px solid rgba(255,255,255,0.3);
    transition: all 0.3s;
}
.btn-secondary:hover {
    border-color: var(--accent-blue);
    background: rgba(45,108,255,0.1);
}

/* Mobile menu toggle */
.nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; }

/* === Hero Section === */
.hero {
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0B1A3B 0%, #0D2255 50%, #0B1A3B 100%);
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(45,108,255,0.15) 0%, transparent 70%);
    border-radius: 50%;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,196,140,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.hero-inner {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
    z-index: 1;
}
.hero-content { flex: 1; }
.hero-content h1 {
    font-size: 3rem;
    color: #fff;
    margin-bottom: 20px;
    line-height: 1.2;
}
.hero-content h1 .highlight {
    color: var(--accent-blue);
}
.hero-content .subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.8;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 28px; }
.hero-cta .btn-primary { padding: 14px 32px; font-size: 1.05rem; }
.hero-cta .btn-secondary { padding: 14px 32px; font-size: 1.05rem; }
.hero-trust {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.hero-trust .trust-icon {
    color: var(--accent-green);
    font-size: 1rem;
}
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}
.hero-mockup {
    width: 100%;
    max-width: 520px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 24px;
    position: relative;
}
.mockup-header {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
}
.mockup-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.mockup-dot.red { background: #FF5F56; }
.mockup-dot.yellow { background: #FFBD2E; }
.mockup-dot.green { background: #27C93F; }
.mockup-windows {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}
.mockup-window {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 8px;
    padding: 12px;
    min-height: 80px;
}
.mockup-window .window-url {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding: 4px 8px;
    background: rgba(255,255,255,0.04);
    border-radius: 4px;
}
.mockup-window .window-content {
    height: 40px;
    background: linear-gradient(90deg, rgba(45,108,255,0.2), rgba(0,196,140,0.2));
    border-radius: 4px;
}
.fingerprint-badge {
    position: absolute;
    bottom: -15px;
    right: -15px;
    background: var(--accent-blue);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(45,108,255,0.5);
}

/* === Section Titles === */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}
.section-title h2 {
    color: #fff;
    font-size: 2.2rem;
    margin-bottom: 16px;
}
.section-title p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto;
}

/* === Feature Cards === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
    backdrop-filter: blur(8px);
}
.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(45,108,255,0.3);
    box-shadow: 0 12px 40px rgba(45,108,255,0.15);
}
.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(45,108,255,0.2), rgba(45,108,255,0.05));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}
.feature-card h3 {
    color: #fff;
    margin-bottom: 12px;
    font-size: 1.15rem;
}
.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* === Scenarios Section === */
.scenarios { background: rgba(255,255,255,0.02); }
.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.scenario-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s;
}
.scenario-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.scenario-visual {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.scenario-visual.ecommerce {
    background: linear-gradient(135deg, rgba(45,108,255,0.15), rgba(0,196,140,0.1));
}
.scenario-visual.advertising {
    background: linear-gradient(135deg, rgba(245,166,35,0.15), rgba(45,108,255,0.1));
}
.scenario-visual.social {
    background: linear-gradient(135deg, rgba(0,196,140,0.15), rgba(45,108,255,0.1));
}
.scenario-icon {
    font-size: 3.5rem;
    opacity: 0.8;
}
.scenario-body { padding: 28px; }
.scenario-body h3 { color: #fff; margin-bottom: 12px; }
.scenario-body p { color: var(--text-secondary); font-size: 0.9rem; }
.scenario-body .scenario-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}
.scenario-body .tag {
    padding: 4px 12px;
    background: rgba(45,108,255,0.1);
    border: 1px solid rgba(45,108,255,0.2);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--accent-blue);
}

/* === Advantages Section === */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.advantage-item {
    display: flex;
    gap: 16px;
    padding: 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all 0.3s;
}
.advantage-item:hover {
    border-color: rgba(45,108,255,0.2);
}
.advantage-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    background: linear-gradient(135deg, rgba(45,108,255,0.2), rgba(45,108,255,0.05));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}
.advantage-item h3 { color: #fff; font-size: 1rem; margin-bottom: 8px; }
.advantage-item p { color: var(--text-secondary); font-size: 0.85rem; margin: 0; }

/* === Stats Section === */
.stats-section {
    background: linear-gradient(135deg, rgba(45,108,255,0.08), rgba(0,196,140,0.05));
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
    padding: 60px 0;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    text-align: center;
}
.stat-item .stat-number {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--accent-gold);
    margin-bottom: 8px;
}
.stat-item .stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* === Testimonials === */
.testimonials { background: rgba(255,255,255,0.02); }
.logo-wall {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 50px;
    opacity: 0.5;
}
.logo-wall .logo-item {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 600;
    letter-spacing: 1px;
}
.testimonial-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.testimonial-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 28px;
}
.testimonial-card .quote {
    font-size: 0.95rem;
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 20px;
    font-style: italic;
}
.testimonial-card .author {
    display: flex;
    align-items: center;
    gap: 12px;
}
.testimonial-card .avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
}
.testimonial-card .author-info .name { color: #fff; font-size: 0.9rem; font-weight: 600; }
.testimonial-card .author-info .role { color: var(--text-secondary); font-size: 0.8rem; }

/* === Pricing Section === */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: start;
}
.pricing-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: all 0.3s;
}
.pricing-card.featured {
    border-color: var(--accent-blue);
    transform: scale(1.05);
    box-shadow: 0 8px 40px rgba(45,108,255,0.2);
    position: relative;
}
.pricing-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-blue);
    color: #fff;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}
.pricing-card h3 { color: #fff; font-size: 1.2rem; margin-bottom: 8px; }
.pricing-card .price {
    font-size: 2.2rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 4px;
}
.pricing-card .price-period { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 24px; }
.pricing-card .price-features {
    text-align: left;
    margin-bottom: 28px;
}
.pricing-card .price-features li {
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    gap: 8px;
}
.pricing-card .price-features li .check { color: var(--accent-green); }
.pricing-card .btn-primary { width: 100%; text-align: center; }

/* === FAQ Section === */
.faq-section { background: rgba(255,255,255,0.02); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-item details { padding: 0; }
.faq-item summary {
    padding: 20px 24px;
    cursor: pointer;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background 0.3s;
}
.faq-item summary:hover { background: rgba(255,255,255,0.03); }
.faq-item summary::marker,
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--accent-blue);
    transition: transform 0.3s;
}
.faq-item details[open] summary::after {
    transform: rotate(45deg);
}
.faq-item .faq-answer {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}
.faq-item .faq-answer ol {
    list-style: decimal;
    padding-left: 20px;
    margin-top: 10px;
}
.faq-item .faq-answer ol li {
    margin-bottom: 8px;
}

/* === CTA Section === */
.cta-section {
    text-align: center;
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(45,108,255,0.1), rgba(0,196,140,0.05));
}
.cta-section h2 { color: #fff; font-size: 2rem; margin-bottom: 16px; }
.cta-section p { color: var(--text-secondary); margin-bottom: 32px; font-size: 1.05rem; }
.cta-section .cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* === Footer === */
.site-footer {
    background: #060F24;
    padding: 60px 0 30px;
    border-top: 1px solid var(--card-border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(5, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand .footer-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.footer-brand p { color: var(--text-secondary); font-size: 0.85rem; line-height: 1.7; }
.footer-col h4 {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: color 0.3s;
}
.footer-col ul li a:hover { color: var(--accent-blue); }
.footer-bottom {
    border-top: 1px solid var(--card-border);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.footer-bottom .copyright { color: var(--text-secondary); font-size: 0.8rem; }
.footer-social { display: flex; gap: 16px; }
.footer-social a {
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    transition: all 0.3s;
}
.footer-social a:hover {
    color: var(--accent-blue);
    border-color: var(--accent-blue);
}

/* === Floating Contact Button === */
.float-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
}
.float-contact a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--accent-blue);
    border-radius: 50%;
    color: #fff;
    font-size: 1.5rem;
    box-shadow: 0 4px 20px rgba(45,108,255,0.4);
    transition: all 0.3s;
}
.float-contact a:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(45,108,255,0.6);
}

/* === Page Header (for inner pages) === */
.page-header {
    padding: 140px 0 60px;
    text-align: center;
    background: linear-gradient(135deg, #0B1A3B, #0D2255);
    position: relative;
}
.page-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
}
.page-header h1 { color: #fff; font-size: 2.5rem; margin-bottom: 16px; }
.page-header p { color: var(--text-secondary); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
.breadcrumb {
    margin-bottom: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}
.breadcrumb a { color: var(--accent-blue); }
.breadcrumb span { margin: 0 8px; }

/* === Content Blocks (for inner pages) === */
.content-block {
    padding: 60px 0;
}
.content-block.alt-bg {
    background: rgba(255,255,255,0.02);
}
.content-two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.content-visual {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.content-visual .visual-icon { font-size: 5rem; opacity: 0.6; }
.content-text h2 { color: #fff; margin-bottom: 16px; }
.content-text p { color: var(--text-secondary); line-height: 1.8; }
.content-text ul { margin: 16px 0; }
.content-text ul li {
    padding: 8px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.content-text ul li .li-icon { color: var(--accent-green); min-width: 20px; }

/* === Pricing Page === */
.pricing-compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 40px;
}
.pricing-compare-table th,
.pricing-compare-table td {
    padding: 14px 20px;
    text-align: center;
    border-bottom: 1px solid var(--glass-border);
    font-size: 0.9rem;
}
.pricing-compare-table th {
    color: #fff;
    font-weight: 600;
    background: rgba(255,255,255,0.03);
}
.pricing-compare-table td { color: var(--text-secondary); }
.pricing-compare-table td:first-child { text-align: left; color: var(--text-primary); }

/* === Help Page === */
.help-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.help-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
}
.help-card:hover {
    border-color: rgba(45,108,255,0.3);
    transform: translateY(-4px);
}
.help-card .help-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}
.help-card h3 { color: #fff; margin-bottom: 10px; }
.help-card p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 16px; }
.help-card a { color: var(--accent-blue); font-size: 0.9rem; font-weight: 600; }

/* === Sitemap Page === */
.sitemap-content { padding: 40px 0; }
.sitemap-content h2 { color: #fff; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 1px solid var(--glass-border); }
.sitemap-content ul { margin-bottom: 30px; }
.sitemap-content ul li { margin-bottom: 8px; }
.sitemap-content ul li a { color: var(--accent-blue); font-size: 0.95rem; }
.sitemap-content ul li a:hover { text-decoration: underline; }

/* === Responsive === */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.featured { transform: scale(1); }
    .footer-grid { grid-template-columns: repeat(3, 1fr); }
    .advantages-grid { grid-template-columns: repeat(2, 1fr); }
    .content-two-col { grid-template-columns: 1fr; gap: 30px; }
}
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.6rem; }
    .hero { padding: 120px 0 60px; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-content h1 { font-size: 2.2rem; }
    .hero-cta { justify-content: center; }
    .hero-trust { justify-content: center; }
    .hero-visual { width: 100%; }
    .nav-menu { display: none; }
    .nav-toggle { display: flex; }
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(11,26,59,0.98);
        padding: 20px;
        border-bottom: 1px solid var(--card-border);
    }
    .nav-menu.active .nav-dropdown {
        position: static;
        display: block;
        background: transparent;
        border: none;
        padding: 8px 0 8px 16px;
        box-shadow: none;
    }
    .scenarios-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr; gap: 24px; }
    .testimonial-cards { grid-template-columns: 1fr; }
    .advantages-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .help-grid { grid-template-columns: 1fr; }
    section { padding: 50px 0; }
}
@media (max-width: 375px) {
    .hero-content h1 { font-size: 1.8rem; }
    .btn-primary, .btn-secondary { padding: 12px 20px; font-size: 0.9rem; }
}