* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-snap-type: y mandatory;
        }
        html, body {
            width: 100%;
            scroll-behavior: smooth;
        }
        body {
            background: #FF4D4D; /* from index.html */
            color: #ffffff;
            overflow-y: scroll; /* Разрешаем прокрутку для работы snap */
            -ms-overflow-style: none;  /* IE and Edge */
            scrollbar-width: none;  /* Firefox */
        }
        body::-webkit-scrollbar {
            display: none; /* Chrome, Safari */
        }
        main {
            width: 100%;
            height: 100vh; /* Каждый главный раздел занимает весь экран */
            scroll-snap-align: start; /* Привязка к началу экрана при прокрутке */
            position: relative;
            display: flex;
            flex-direction: column;
        }

        #promo-screen {
            width: 100%;
            height: 100vh; /* Каждый главный раздел занимает весь экран */
            scroll-snap-align: start;
            position: relative;
            text-align: center;
            color: white;
            overflow-x: hidden; /* Скрываем выходящие за пределы аватарки по горизонтали */
        }
        
        #promo-background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        #promo-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 100%;
            padding: 2rem;
            z-index: 1;
        }
        
        #promo-title {
            font-size: clamp(2.5rem, 8vw, 4rem);
            font-weight: 800;
            line-height: 1.1;
            text-shadow: 0 4px 15px rgba(0,0,0,0.3);
            margin-bottom: 1rem;
        }

        #promo-subtitle {
            font-size: clamp(1rem, 3vw, 1.2rem);
            line-height: 1.6;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            text-shadow: 0 2px 10px rgba(0,0,0,0.3);
        }
        
        /* Background Decorations */
        .background-decor {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }
        .decor-circle {
            position: absolute;
            border-radius: 50%;
            border: 1px solid rgba(255, 255, 255, 0.2);
            left: 50%;
            top: 40%;
            transform: translate(-50%, -50%);
        }
        .decor-circle-1 { width: 300px; height: 300px; }
        .decor-circle-2 { width: 500px; height: 500px; }
        .decor-circle-3 { width: 700px; height: 700px; }

        .decor-avatar {
            position: absolute;
            border-radius: 50%;
            background-size: cover;
            background-position: center;
            border: 2px solid white;
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }
        .avatar-1 {
            width: 50px;
            height: 50px;
            top: 25%;
            left: 20%;
            background-image: url('/components/pic/i_pic_03.jpg');
        }
        .avatar-2 {
            width: 90px;
            height: 90px;
            top: 35%;
            left: 50%;
            transform: translateX(-50%);
             background-image: url('/components/pic/i_pic_01.jpg');
        }
        .avatar-3 {
            width: 40px;
            height: 40px;
            top: 20%;
            right: 22%;
            background-image: url('/components/pic/i_pic_02.jpg');
        }
         .avatar-4 {
            width: 60px;
            height: 60px;
            top: 45%;
            right: calc(30% - 60px);
             background-image: url('/components/pic/i_pic_04.jpg');
        }

        /* Main Logo */
        .main-logo-container {
            position: relative;
            z-index: 1;
            padding: 2rem 0;
            text-align: center;
        }
        .main-logo {
            height: 115px;
            filter: brightness(0) invert(1);
        }
        
        /* Burger Menu on Index */
        .index-burger-btn {
            position: absolute;
            top: 1.5rem;
            right: 2rem;
            z-index: 1001;
            background: none;
            border: none;
            padding: 0;
            cursor: pointer;
            color: #ffffff;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: background-color 0.2s;
        }
        .index-burger-btn:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        .index-burger-btn svg {
            width: 24px;
            height: 24px;
        }
        @media (max-width: 768px) {
            .index-burger-btn {
                top: 1rem;
                right: 1rem;
            }
        }
        
        /* --- NEW: Custom Dropdown Menu for Index Page --- */
        .index-dropdown-menu {
            position: fixed;
            top: 75px;
            right: 15px;
            z-index: 2000;
            width: 260px;
            background: white;
            color: #1c1c1e;
            border-radius: 26px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.15);
            padding: 0.5rem;
            transform-origin: top calc(100% - 32px);
            transform: scale(0.95) translateY(-10px);
            opacity: 0;
            pointer-events: none;
            transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s ease;
        }
        .index-dropdown-menu.active {
            transform: scale(1) translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .index-dropdown-menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .index-dropdown-menu ul li a {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem;
            text-decoration: none;
            color: #1c1c1e;
            font-size: 1rem;
            font-weight: 500;
            border-radius: 12px;
        }
        .index-dropdown-menu ul li a:hover {
            background-color: #f0f2f5;
        }
        .index-dropdown-menu ul li a img, .index-dropdown-menu ul li a svg {
            width: 24px;
            height: 24px;
        }

        .dropdown-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1999;
            display: none;
        }
        .dropdown-overlay.active {
            display: block;
        }
        @media (max-width: 768px) {
            .index-dropdown-menu {
                top: 65px;
                right: 10px;
            }
        }

        /* Content */
        .content-wrapper {
            position: relative;
            z-index: 1;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            align-items: center;
            text-align: center;
            padding: 2rem;
            padding-bottom: 4rem; /* Space for button and home indicator */
        }
        
        .title {
            font-size: clamp(2.8rem, 10vw, 4rem);
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.03em;
            margin-bottom: 1rem;
            max-width: 600px;
        }
        .subtitle {
            font-size: 1.1rem;
            line-height: 1.6;
            max-width: 450px;
            margin-bottom: 2.5rem;
            color: rgba(255, 255, 255, 0.9);
        }
        .btn {
            background: white;
            color: #111;
            border: none;
            padding: 1.1rem 2rem;
            font-size: 1.1rem;
            border-radius: 26px;
            cursor: pointer;
            transition: transform 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            text-decoration: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            min-width: 320px;
            box-shadow: 0 8px 30px rgba(0,0,0,0.1);
        }
        .btn:hover {
            transform: scale(1.05);
        }
        .btn-arrow {
            font-size: 1.5rem;
            line-height: 1;
            transition: transform 0.3s ease;
            margin-left: 1rem;
        }
        .btn:hover .btn-arrow {
            transform: translateX(5px);
        }

        /* --- Avatar Scroller Styles --- */
        .promo-avatar-scroller {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            padding-bottom: 2rem;
            pointer-events: none;
            z-index: 1; /* Убедимся, что скроллер выше фона */
            -webkit-mask-image: linear-gradient(to top, black 60%, transparent 100%);
            mask-image: linear-gradient(to top, black 60%, transparent 100%);
        }
        .avatar-row {
            display: flex;
            flex-wrap: nowrap;
        }
        .avatar-row-inner {
            display: flex;
            gap: 1rem;
            padding: 0 0.5rem;
        }
        .avatar-row img {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            border: 2px solid white;
            box-shadow: 0 4px 10px rgba(0,0,0,0.2);
            object-fit: cover;
        }
        .row-1 .avatar-row-inner { animation: scroll-left 40s linear infinite; }
        .row-2 .avatar-row-inner { animation: scroll-right 45s linear infinite; }
        .row-2 { margin-left: -40px; } /* Staggered effect */

        @keyframes scroll-left {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }
        @keyframes scroll-right {
            0% { transform: translateX(-50%); }
            100% { transform: translateX(0); }
        }

        /* NEW: Styles for the third promo screen */
        #promo-screen-3 {
            width: 100%;
            height: 100vh;
            scroll-snap-align: start;
            position: relative;
            background: #2c3e50; /* A dark blue for contrast */
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
        }