/* ============================================================
   VPNPROUS — Premium CSS v2
   ============================================================ */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --accent: #a855f7;
    --pink: #ec4899;
    --bg: #0a0a1a;
    --bg-card: #12122a;
    --bg-card-hover: #1a1a3e;
    --text: #e0e0f0;
    --text-muted: #8888b0;
    --text-dim: #6666a0;
    --border: rgba(99, 102, 241, 0.2);
    --border-light: rgba(255, 255, 255, 0.06);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-bn: 'Noto Sans Bengali', 'Inter', sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg); color: var(--text); line-height: 1.7;
    overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
body.bn { font-family: var(--font-bn); }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
section { padding: 100px 0; position: relative; }
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 10px;
    padding: 14px 32px; border-radius: var(--radius-sm); font-weight: 600;
    font-size: 15px; border: none; cursor: pointer; transition: var(--transition);
}
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--secondary)); color: #fff; box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--primary); background: rgba(99, 102, 241, 0.1); transform: translateY(-2px); }
.btn-lg { padding: 16px 40px; font-size: 16px; border-radius: var(--radius); }
.btn-sm { padding: 10px 22px; font-size: 13px; }
.pulse-btn { animation: pulseGlow 2s ease-in-out infinite; }
@keyframes pulseGlow { 0%,100% { box-shadow: 0 4px 20px rgba(99,102,241,0.4); } 50% { box-shadow: 0 4px 40px rgba(99,102,241,0.7); } }
.section-header { text-align: center; margin-bottom: 60px; }
.section-badge {
    display: inline-block; padding: 6px 20px; background: rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border); border-radius: 50px; font-size: 13px; font-weight: 600;
    color: var(--primary-light); margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px;
}
.section-header h2 { font-size: 40px; font-weight: 800; line-height: 1.2; margin-bottom: 16px; }
.section-header p { font-size: 17px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.preloader { position: fixed; inset: 0; background: var(--bg); display: flex; align-items: center; justify-content: center; z-index: 99999; transition: opacity 0.6s, visibility 0.6s; }
.preloader.hidden { opacity: 0; visibility: hidden; }
.preloader-shield { font-size: 48px; margin-bottom: 24px; animation: shieldPulse 1s ease-in-out infinite; }
@keyframes shieldPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.15); } }
.preloader-bar { width: 200px; height: 4px; background: rgba(255,255,255,0.1); border-radius: 4px; margin: 0 auto 16px; overflow: hidden; }
.preloader-fill { width: 0%; height: 100%; background: linear-gradient(90deg, var(--primary), var(--secondary)); border-radius: 4px; animation: loaderFill 1.5s forwards; }
@keyframes loaderFill { to { width: 100%; } }
.preloader-text { color: var(--text-muted); font-size: 14px; }
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 16px 0; transition: var(--transition); }
.navbar.scrolled { background: rgba(10, 10, 26, 0.9); backdrop-filter: blur(20px); padding: 10px 0; border-bottom: 1px solid var(--border-light); }
.nav-container { display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 8px; font-size: 22px; font-weight: 800; }
.logo-icon { font-size: 26px; } .logo-text { letter-spacing: -0.5px; }
.logo-accent { background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--text-muted); transition: var(--transition); position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px; background: var(--primary); border-radius: 2px; transition: var(--transition); }
.nav-link:hover { color: var(--text); }
.nav-link:hover::after { width: 100%; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.lang-switcher { display: flex; background: rgba(255,255,255,0.05); border-radius: 8px; padding: 3px; border: 1px solid var(--border-light); }
.lang-btn { padding: 6px 14px; font-size: 12px; font-weight: 700; background: transparent; color: var(--text-muted); border: none; border-radius: 6px; cursor: pointer; transition: var(--transition); font-family: inherit; }
.lang-btn.active { background: var(--primary); color: #fff; }
.lang-btn:hover:not(.active) { color: var(--text); }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
.hero { min-height: 100vh; display: flex; align-items: center; position: relative; overflow: hidden; padding-top: 80px; }
.hero-bg { position: absolute; inset: 0; background: radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.15) 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.1) 0%, transparent 50%), radial-gradient(ellipse at 50% 80%, rgba(168,85,247,0.08) 0%, transparent 50%); }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(99,102,241,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(99,102,241,0.03) 1px, transparent 1px); background-size: 60px 60px; mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%); -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%); }
.hero-glow { position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 600px; height: 600px; background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%); pointer-events: none; }
.hero-particles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 800px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 24px; background: rgba(99,102,241,0.1); border: 1px solid var(--border); border-radius: 50px; font-size: 14px; font-weight: 600; color: var(--primary-light); margin-bottom: 32px; }
.hero-title { font-size: 56px; font-weight: 900; line-height: 1.1; margin-bottom: 24px; letter-spacing: -1px; }
.hero-subtitle { font-size: 18px; color: var(--text-muted); line-height: 1.7; margin-bottom: 40px; max-width: 600px; margin: 0 auto 40px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 60px; }
.hero-stats { display: flex; gap: 60px; justify-content: center; }
.stat-item { text-align: center; }
.stat-number { display: block; font-size: 36px; font-weight: 800; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2; }
.stat-label { font-size: 14px; color: var(--text-muted); font-weight: 500; }
.apps { background: linear-gradient(180deg, var(--bg), var(--bg-card)); }
.apps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin-bottom: 60px; }
.app-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 36px 28px; text-align: center; position: relative; overflow: hidden; transition: var(--transition); }
.app-card:hover { transform: translateY(-8px); border-color: var(--border); box-shadow: var(--shadow); }
.app-card-bg { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle at var(--mouse-x,50%) var(--mouse-y,50%), rgba(99,102,241,0.05) 0%, transparent 60%); opacity: 0; transition: opacity .4s; pointer-events: none; }
.app-card:hover .app-card-bg { opacity: 1; }
.app-icon-wrap { width: 72px; height: 72px; border-radius: 20px; background: linear-gradient(135deg, var(--app-color), transparent); display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 22px; font-weight: 800; color: #fff; box-shadow: 0 4px 20px rgba(99,102,241,0.3); }
.app-name { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.app-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 20px; line-height: 1.6; }
.app-features { text-align: left; }
.app-features li { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-dim); padding: 6px 0; }
.app-features i { color: var(--primary-light); font-size: 14px; }
.apps-cta-card { background: linear-gradient(135deg, rgba(99,102,241,0.1), rgba(139,92,246,0.08)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 48px; text-align: center; }
.apps-cta-icon { font-size: 48px; margin-bottom: 16px; }
.apps-cta-card h3 { font-size: 28px; font-weight: 800; margin-bottom: 12px; }
.apps-cta-card p { color: var(--text-muted); max-width: 500px; margin: 0 auto 28px; }
.benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 20px; }
.benefit-item { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 28px 24px; text-align: center; transition: var(--transition); }
.benefit-item:hover { transform: translateY(-4px); border-color: var(--border); box-shadow: var(--shadow); }
.benefit-icon { font-size: 36px; margin-bottom: 16px; }
.benefit-item h4 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.benefit-item p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.pricing { background: linear-gradient(180deg, var(--bg), var(--bg-card)); }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; max-width: 1000px; margin: 0 auto; }
.pricing-card { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 40px 32px; text-align: center; position: relative; transition: var(--transition); }
.pricing-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.pricing-featured { transform: scale(1.05); border-color: var(--primary); box-shadow: var(--shadow-glow); }
.pricing-featured:hover { transform: scale(1.05) translateY(-6px); }
.pricing-badge { font-size: 14px; color: var(--text-muted); margin-bottom: 12px; }
.pricing-badge.popular { display: inline-block; padding: 4px 16px; background: linear-gradient(135deg, var(--primary), var(--secondary)); border-radius: 50px; font-size: 12px; font-weight: 700; color: #fff; margin-bottom: 16px; }
.pricing-name { font-size: 20px; font-weight: 700; margin-bottom: 16px; }
.pricing-currency { font-size: 20px; font-weight: 600; vertical-align: super; color: var(--primary-light); }
.pricing-amount { font-size: 52px; font-weight: 900; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.pricing-period { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }
.pricing-features li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-dim); padding: 8px 0; border-bottom: 1px solid var(--border-light); }
.pricing-features li:last-child { border-bottom: none; }
.pricing-features i { color: var(--primary-light); font-size: 14px; flex-shrink: 0; }
.pricing-btn { width: 100%; }
.pricing-note { text-align: center; color: var(--text-muted); font-size: 14px; margin-top: 40px; padding: 20px; background: rgba(99,102,241,0.05); border-radius: var(--radius-sm); border: 1px solid var(--border-light); }
.payment-methods { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.payment-method { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius); padding: 36px 28px; text-align: center; transition: var(--transition); }
.payment-method:hover { transform: translateY(-4px); border-color: var(--border); box-shadow: var(--shadow); }
.payment-icon-wrap { width: 72px; height: 72px; border-radius: 50%; margin: 0 auto 16px; overflow: hidden; border: 2px solid var(--border-light); background: rgba(99,102,241,0.1); display: flex; align-items: center; justify-content: center; }
.payment-method h3 { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
.payment-number { font-family: 'JetBrains Mono', monospace; font-size: 20px; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 16px; padding: 8px; background-color: rgba(99,102,241,0.05); border-radius: var(--radius-sm); }
.payment-info { font-size: 14px; color: var(--text-muted); margin-bottom: 20px; line-height: 1.6; }
.payment-info a { color: var(--primary-light); text-decoration: underline; }
.payment-steps { text-align: left; }
.payment-step { display: flex; align-items: center; gap: 12px; padding: 8px 0; }
.step-num { width: 28px; height: 28px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: #fff; flex-shrink: 0; }
.payment-step span:last-child { font-size: 14px; color: var(--text-dim); }
.how-it-works { background: linear-gradient(180deg, var(--bg-card), var(--bg)); }
.hiw-steps { max-width: 600px; margin: 0 auto; }
.hiw-step { display: flex; align-items: flex-start; gap: 20px; padding: 24px 0; }
.hiw-step-num { width: 48px; height: 48px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 20px; font-weight: 800; color: #fff; flex-shrink: 0; box-shadow: 0 4px 20px rgba(99,102,241,0.3); }
.hiw-step-content h4 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.hiw-step-content p { font-size: 14px; color: var(--text-muted); }
.hiw-step-connector { width: 2px; height: 30px; background: linear-gradient(to bottom, var(--primary), transparent); margin-left: 23px; }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-sm); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
.faq-item.active { border-color: var(--border); }
.faq-question { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; background: none; border: none; color: var(--text); font-size: 15px; font-weight: 600; cursor: pointer; text-align: left; font-family: inherit; transition: var(--transition); gap: 12px; }
.faq-question i { font-size: 14px; color: var(--text-muted); transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question i { transform: rotate(180deg); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s, padding 0.4s; }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer p { padding: 0 24px 20px; font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.chat-card { text-align: center; background: linear-gradient(135deg, rgba(99,102,241,0.08), rgba(139,92,246,0.05)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 60px 40px; position: relative; overflow: hidden; }
.chat-card-glow { position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(99,102,241,0.05) 0%, transparent 60%); animation: glowRotate 10s linear infinite; }
@keyframes glowRotate { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
.chat-card h2 { font-size: 36px; font-weight: 800; margin-bottom: 12px; position: relative; }
.chat-card > p { color: var(--text-muted); margin-bottom: 32px; position: relative; }
.chat-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; position: relative; }
.chat-agents { position: relative; }
.chat-agents > span { display: block; font-size: 14px; color: var(--text-muted); margin-bottom: 12px; }
.agent-avatars { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-bottom: 12px; }
.agent-avatar { width: 40px; height: 40px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; color: #fff; box-shadow: 0 2px 10px rgba(99,102,241,0.3); }
.agent-avatar-more { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.1); display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; color: var(--text-muted); }
.chat-agent-text { font-size: 13px; color: var(--text-dim); }
.telegram-embed { max-width: 420px; margin: 0 auto; }
.telegram-card { background: #17212b; border-radius: var(--radius); overflow: hidden; box-shadow: 0 20px 60px rgba(0,0,0,0.5); }
.telegram-header { display: flex; align-items: center; gap: 12px; padding: 16px 20px; background: #1e2d3b; border-bottom: 1px solid rgba(255,255,255,0.05); }
.telegram-dots { display: flex; gap: 6px; }
.telegram-dots span { width: 10px; height: 10px; border-radius: 50%; }
.telegram-dots span:nth-child(1) { background: #ff5f56; }
.telegram-dots span:nth-child(2) { background: #ffbd2e; }
.telegram-dots span:nth-child(3) { background: #27c93f; }
.telegram-title { font-size: 13px; color: #8e9eae; font-weight: 500; }
.telegram-body { padding: 20px; display: flex; flex-direction: column; gap: 12px; min-height: 280px; background: #0e1621; }
.telegram-msg { max-width: 85%; padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.5; animation: msgAppear 0.3s ease forwards; opacity: 0; }
.telegram-msg:nth-child(1) { animation-delay: 0.5s; }
.telegram-msg:nth-child(2) { animation-delay: 1.5s; }
.telegram-msg:nth-child(3) { animation-delay: 2.5s; }
@keyframes msgAppear { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.bot-msg { align-self: flex-start; background: #182533; color: #d5dde6; border-bottom-left-radius: 4px; }
.user-msg { align-self: flex-end; background: #2b5278; color: #fff; border-bottom-right-radius: 4px; }
.telegram-footer { padding: 12px 20px; background: #1e2d3b; text-align: center; }
.footer { background: var(--bg-card); border-top: 1px solid var(--border-light); padding: 60px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-logo { display: flex; align-items: center; gap: 8px; font-size: 20px; font-weight: 800; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; color: var(--text-muted); line-height: 1.7; max-width: 300px; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.social-link { width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.05); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: var(--transition); font-size: 18px; }
.social-link:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-links-col h4 { font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text-muted); margin-bottom: 16px; }
.footer-links-col ul li { margin-bottom: 10px; }
.footer-links-col ul a { font-size: 14px; color: var(--text-dim); transition: var(--transition); }
.footer-links-col ul a:hover { color: var(--primary-light); }
.footer-bottom { border-top: 1px solid var(--border-light); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--text-dim); }
.back-to-top { position: fixed; bottom: 30px; right: 30px; width: 48px; height: 48px; border-radius: 50%; background: var(--primary); color: #fff; border: none; cursor: pointer; font-size: 18px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 20px rgba(99,102,241,0.4); opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition); z-index: 999; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
@media (max-width: 992px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .pricing-featured { transform: none; }
    .pricing-featured:hover { transform: translateY(-6px); }
    .hero-title { font-size: 42px; }
    .chat-card { padding: 40px 24px; }
}
@media (max-width: 768px) {
    .nav-links { position: fixed; top: 64px; left: 0; right: 0; background: rgba(10,10,26,0.98); backdrop-filter: blur(20px); flex-direction: column; padding: 24px; gap: 16px; border-bottom: 1px solid var(--border-light); transform: translateY(-120%); opacity: 0; transition: all 0.4s; pointer-events: none; }
    .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: all; }
    .nav-toggle { display: flex; }
    .nav-cta { display: none; }
    .nav-cta-mobile { display: inline-flex; margin-top: 8px; width: 100%; }
    .section-header h2 { font-size: 28px; }
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .hero-stats { gap: 24px; }
    .stat-number { font-size: 24px; }
    .hero-actions { flex-direction: column; align-items: center; }
    .btn-lg { width: 100%; max-width: 320px; }
    .apps-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .payment-methods { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; text-align: center; }
    .footer-brand p { margin: 0 auto 20px; }
    .footer-social { justify-content: center; }
    .footer-bottom { flex-direction: column; gap: 8px; }
    .chat-card h2 { font-size: 28px; }
    .apps-cta-card { padding: 32px 20px; }
}
@media (max-width: 480px) {
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 15px; }
    .section-header h2 { font-size: 24px; }
    .pricing-amount { font-size: 40px; }
    .benefits-grid { grid-template-columns: 1fr; }
    .chat-card h2 { font-size: 24px; }
    .chat-card { padding: 32px 16px; }
    .pricing-card { padding: 28px 20px; }
}
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.fade-in-up { opacity: 0; transform: translateY(30px); transition: opacity 0.6s, transform 0.6s; }
.fade-in-up.visible { opacity: 1; transform: translateY(0); }