* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.47059;
            color: #1d1d1f;
            background: #ffffff;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 22px;
        }

        header {
            background: rgba(251, 251, 253, 0.8);
            backdrop-filter: saturate(180%) blur(20px);
            padding: 12px 0;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 21px;
            font-weight: 600;
            color: #1d1d1f;
            letter-spacing: -0.022em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-avatar {
            width: 42px;
            height: 42px;
            border-radius: 21px;
            object-fit: cover;
        }

        .developer-link {
            color: #6e6e73;
            text-decoration: none;
            font-size: 16px;
            line-height: 1.47059;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .developer-link:hover {
            text-decoration: underline;
        }

        .header-links {
            display: flex;
            gap: 24px;
            align-items: center;
        }

        .tip-link {
            color: #6e6e73;
            text-decoration: none;
            font-size: 16px;
            line-height: 1.47059;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .tip-link:hover {
            text-decoration: underline;
        }

        .developer-icon,
        .tip-icon {
            font-size: 32px;
        }

        .hero {
            text-align: center;
            padding: 120px 0 76px;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            width: 100%;
        }

        .hero h1 {
            font-size: 56px;
            font-weight: 700;
            line-height: 1.07143;
            letter-spacing: -0.005em;
            margin-bottom: 16px;
            color: #1d1d1f;
        }

        .hero p {
            font-size: 21px;
            line-height: 1.381;
            font-weight: 400;
            margin-bottom: 40px;
            color: #86868b;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 40px;
        }

        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #007aff;
            color: white;
            padding: 12px 32px;
            text-decoration: none;
            border-radius: 980px;
            font-size: 17px;
            font-weight: 400;
            transition: all 0.15s ease;
            min-width: 110px;
            text-align: center;
            justify-content: center;
            height: 46px;
            box-sizing: border-box;
        }

        .telegram-icon {
            width: 24px;
            height: 24px;
            display: inline-block;
            flex-shrink: 0;
        }

        .cta-button:hover {
            background: #0056cc;
            transform: translateY(-1px);
        }

        .hero .stats-info {
            font-size: 14px;
            color: #1d1d1f !important;
            margin-top: 12px;
            margin-bottom: 0;
            font-weight: 400;
            line-height: 1.4;
            max-width: none;
        }

        .features {
            background: #ffffff;
            padding: 100px 0;
        }

        .features h2 {
            text-align: center;
            font-size: 40px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.003em;
            margin-bottom: 60px;
            color: #1d1d1f;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: #f5f5f7;
            padding: 24px 20px;
            border-radius: 16px;
            text-align: center;
            transition: transform 0.3s ease;
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .feature-card:hover {
            transform: translateY(-4px);
        }

        .feature-icon {
            font-size: 40px;
            margin-bottom: 16px;
            display: block;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.2;
            margin-bottom: 12px;
            color: #1d1d1f;
        }

        .feature-card p {
            color: #86868b;
            line-height: 1.4;
            font-size: 15px;
            font-weight: 400;
        }

        .coming-soon {
            position: relative;
        }

        .coming-soon::after {
            content: 'скоро';
            position: absolute;
            top: -8px;
            right: -8px;
            background: #007aff;
            color: white;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 8px;
            border-radius: 12px;
            text-transform: lowercase;
        }

        .testimonials {
            background: #ffffff;
            padding: 80px 0;
        }

        .testimonials h2 {
            text-align: center;
            font-size: 40px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.003em;
            margin-bottom: 60px;
            color: #1d1d1f;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
            max-width: 1200px;
            margin: 0 auto;
            transition: opacity 0.3s ease-in-out;
        }

        .testimonial-card {
            background: #f5f5f7;
            padding: 32px;
            border-radius: 18px;
            border: 1px solid rgba(0, 0, 0, 0.04);
            position: relative;
        }

        .testimonial-quote {
            font-size: 17px;
            line-height: 1.47059;
            color: #1d1d1f;
            margin-bottom: 20px;
            font-style: italic;
        }

        .testimonial-author {
            font-size: 15px;
            font-weight: 600;
            color: #007aff;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 16px;
            left: 24px;
            font-size: 48px;
            color: #007aff;
            opacity: 0.3;
            font-family: Georgia, serif;
        }

        .cta-section {
            background: #f5f5f7;
            padding: 100px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.003em;
            margin-bottom: 16px;
            color: #1d1d1f;
        }

        .cta-section p {
            font-size: 21px;
            line-height: 1.381;
            font-weight: 400;
            margin-bottom: 40px;
            color: #86868b;
        }

        footer {
            background: #f5f5f7;
            color: #86868b;
            text-align: center;
            padding: 40px 0;
            border-top: 1px solid rgba(0, 0, 0, 0.08);
        }

        footer p {
            font-size: 12px;
            line-height: 1.33337;
            font-weight: 400;
            margin-bottom: 10px;
        }

        .language-switch {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 10px;
        }

        .language-switch a {
            color: #007aff;
            text-decoration: none;
            font-size: 14px;
            padding: 4px 8px;
            border-radius: 4px;
            transition: background-color 0.2s;
        }

        .language-switch a:hover {
            background-color: rgba(0, 122, 255, 0.1);
        }

        .language-switch a.active {
            background-color: #007aff;
            color: white;
        }

        /* Стили для секции "Как работает тренер" */
        .how-it-works {
            background: #ffffff;
            padding: 100px 0;
        }

        .how-it-works h2 {
            text-align: center;
            font-size: 40px;
            font-weight: 700;
            line-height: 1.1;
            letter-spacing: -0.003em;
            margin-bottom: 16px;
            color: #1d1d1f;
        }

        .section-subtitle {
            text-align: center;
            font-size: 21px;
            line-height: 1.381;
            font-weight: 400;
            margin-bottom: 60px;
            color: #86868b;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            margin-bottom: 60px;
        }

        .demo-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .chat-messages {
            padding: 20px;
            height: 400px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            gap: 20px;
            position: relative;
            background: #f5f5f7;
            border-radius: 20px;
        }

        .message {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            animation: messageAppear 0.8s cubic-bezier(0.23, 1, 0.32, 1);
        }

        .message.user {
            flex-direction: row-reverse;
        }

        .message-avatar {
            font-size: 20px;
            width: 32px;
            height: 32px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .message.bot .message-avatar {
            background: #007aff;
            color: white;
        }

        .message.user .message-avatar {
            background: #34c759;
            color: white;
        }

        .message-content {
            max-width: 75%;
            padding: 12px 16px;
            border-radius: 18px;
            font-size: 15px;
            line-height: 1.4;
            position: relative;
        }

        .message.bot .message-content {
            background: #ffffff;
            color: #1d1d1f;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .message.user .message-content {
            background: #007aff;
            color: white;
        }

        .message-time {
            font-size: 12px;
            opacity: 0.6;
            margin-top: 4px;
            text-align: right;
        }

        .message.user .message-time {
            text-align: left;
        }

        .typing-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 12px 16px;
            background: #ffffff;
            border-radius: 18px;
            max-width: 75%;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        }

        .typing-dots {
            display: flex;
            gap: 4px;
        }

        .typing-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #86868b;
            animation: typingPulse 1.4s infinite;
        }

        .typing-dot:nth-child(2) {
            animation-delay: 0.2s;
        }

        .typing-dot:nth-child(3) {
            animation-delay: 0.4s;
        }

        @keyframes typingPulse {
            0%, 60%, 100% { opacity: 0.3; }
            30% { opacity: 1; }
        }

        @keyframes messageAppear {
            0% {
                opacity: 0;
                transform: translateY(30px) scale(0.95);
            }
            100% {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }

        @keyframes messageDisappear {
            0% {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
            100% {
                opacity: 0;
                transform: translateY(-30px) scale(0.95);
            }
        }

        /* Стили для особенностей тренера */
        .coach-features {
            display: flex;
            flex-direction: column;
            gap: 24px;
            margin-top: 40px;
        }

        .feature-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px;
            background: #ffffff;
            border-radius: 16px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            border: 1px solid rgba(0, 0, 0, 0.04);
        }

        .coach-features .feature-icon {
            font-size: 32px;
            width: 56px;
            height: 56px;
            background: #f5f5f7;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .feature-content h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            color: #1d1d1f;
            line-height: 1.2;
        }

        .feature-content p {
            font-size: 15px;
            line-height: 1.4;
            color: #86868b;
            margin: 0;
        }

        @media (max-width: 768px) {
            .hero h1 {
                font-size: 40px;
            }
            
            .hero p {
                font-size: 19px;
            }
            
            .features-grid {
                grid-template-columns: 1fr;
            }
            
            .container {
                padding: 0 16px;
            }

            .logo {
                font-size: 20px;
            }

            .logo-avatar {
                width: 40px;
                height: 40px;
                border-radius: 20px;
            }


            .developer-link {
                font-size: 16px;
            }

            .developer-link-text {
                display: none;
            }

            .tip-link {
                font-size: 16px;
            }

            .tip-link-text {
                display: none;
            }

            .developer-icon,
            .tip-icon {
                font-size: 32px;
            }

            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .testimonial-card {
                padding: 24px;
            }

            .chat-messages {
                padding: 16px;
                height: 350px;
            }

            .coach-features {
                gap: 16px;
                margin-top: 24px;
            }

            .feature-item {
                padding: 16px;
                gap: 12px;
            }

            .coach-features .feature-icon {
                width: 48px;
                height: 48px;
                font-size: 24px;
            }

            .feature-content h4 {
                font-size: 16px;
                margin-bottom: 6px;
            }

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

        }