:root {
    /* Цветовая палитра */
    --color-bg-body: #0f141f;
    --color-bg-card: #1c2431;
    --color-bg-input: #273142;
    
    --color-text-primary: #ffffff;
    --color-text-secondary: #a0aec0;
    --color-text-accent: #63b3ed;

    --color-primary: #3182ce;
    --color-primary-hover: #2b6cb0;
    --color-accent: #48bb78;
    --color-promo: #ecc94b;

    --gradient-primary: linear-gradient(135deg, #4299e1 0%, #3182ce 100%);
    --gradient-btn: linear-gradient(90deg, #3182ce 0%, #2c5282 100%);
    --gradient-btn-hover: linear-gradient(90deg, #4299e1 0%, #2b6cb0 100%);
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 15px rgba(66, 153, 225, 0.4);

    /* Типографика и размеры */
    --font-main: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    
    --border-radius: 0.75rem;
    --border-radius-sm: 0.375rem;
    --transition-speed: 0.3s;
}

/* Сброс и базовые стили */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--color-bg-body);
    color: var(--color-text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Утилиты */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.text-center {
    text-align: center;
}

.row-center {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
}

/* Мобильное меню / Верхняя панель */
.line-menu-mobile {
    padding: var(--spacing-sm) 0;
    background-color: rgba(28, 36, 49, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.line-menu-mobile .row-center {
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.landing-header-right-login,
.landing-header-right-reg {
    cursor: pointer;
    padding: 0.5rem 1.2rem;
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-speed) ease;
}

.landing-header-right-login {
    color: var(--color-text-primary);
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.landing-header-right-login:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-text-primary);
}

.landing-header-right-reg {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.landing-header-right-reg:hover {
    background: #38a169;
    transform: translateY(-1px);
}

/* Хедер (Hero Section) */
.header-box {
    background: radial-gradient(circle at center, #1a202c 0%, #0f141f 100%);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.header-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        transparent,
        transparent 10px,
        rgba(66, 153, 225, 0.03) 10px,
        rgba(66, 153, 225, 0.03) 11px
    );
    transform: rotate(45deg);
    z-index: 1;
    pointer-events: none;
}

.header-box .table {
    display: flex;
    justify-content: center;
    width: 100%;
    z-index: 2;
    position: relative;
}

.ctr {
    width: 100%;
    max-width: 800px;
    animation: fade-in-up 0.8s ease-out;
}

h1 {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    color: var(--color-text-primary);
    text-transform: uppercase;
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    background: linear-gradient(to right, #fff, #a0aec0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Промо блок */
.text-head {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.promo {
    display: inline-block;
    background-color: rgba(49, 130, 206, 0.15);
    color: var(--color-promo);
    padding: 0.2rem 0.6rem;
    border: 1px dashed var(--color-promo);
    border-radius: var(--border-radius-sm);
    font-family: monospace;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-speed);
    position: relative;
}

.promo:hover {
    background-color: rgba(236, 201, 75, 0.1);
    transform: scale(1.05);
}

.promo::after {
    content: '📋';
    font-size: 0.8rem;
    margin-left: 0.5rem;
    opacity: 0.7;
}

b {
    color: var(--color-text-primary);
}

.inform-promo {
    font-size: 0.85rem;
    color: var(--color-accent);
    margin-top: var(--spacing-xs);
    opacity: 0.8;
}

/* Кнопки (Основная CTA) */
.button.href-site {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 1rem 2.5rem;
    background: var(--gradient-btn);
    color: white;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: var(--shadow-glow);
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    margin: var(--spacing-sm) 0;
    position: relative;
    overflow: hidden;
}

.button.href-site::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
}

.button.href-site:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 20px rgba(49, 130, 206, 0.5);
    background: var(--gradient-btn-hover);
}

.button.href-site:hover::before {
    left: 100%;
}

.button.href-site:active {
    transform: translateY(-1px);
}

/* Контентная часть */
.content {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

.col-xs-12 {
    width: 100%;
    max-width: 900px; /* Ограничение ширины для читаемости */
}

h2 {
    color: var(--color-text-primary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 1rem;
    border-left: 4px solid var(--color-primary);
}

h3 {
    color: var(--color-text-primary);
    font-size: 1.4rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
    font-size: 1.05rem;
}

strong {
    color: var(--color-text-primary);
}

/* Списки */
ul {
    list-style: none;
    margin-bottom: var(--spacing-md);
    padding-left: 0;
}

ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6rem;
    width: 6px;
    height: 6px;
    background-color: var(--color-primary);
    border-radius: 50%;
    box-shadow: 0 0 5px var(--color-primary);
}

/* Таблицы */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--spacing-md) 0;
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
}

table th, table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

table th {
    background-color: rgba(49, 130, 206, 0.1);
    color: var(--color-text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

table tr:last-child td {
    border-bottom: none;
}

table tr:hover td {
    background-color: rgba(255, 255, 255, 0.02);
}

/* Изображения */
.img {
    margin: var(--spacing-md) 0;
    text-align: center;
}

img.lazyload, img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-speed);
    display: inline-block;
}

img:hover {
    transform: scale(1.01);
}

/* Адаптивность */
@media (max-width: 768px) {
    :root {
        --spacing-xl: 2.5rem;
        --spacing-lg: 2rem;
    }

    .line-menu-mobile .row-center {
        justify-content: center;
    }
    
    .landing-header-right-login,
    .landing-header-right-reg {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    h1 {
        font-size: 2rem;
    }

    .header-box {
        padding: var(--spacing-lg) 0;
    }

    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
}

/* Анимации */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Forms (если появятся динамически) */
input[type="text"], 
input[type="email"], 
input[type="password"] {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background-color: var(--color-bg-input);
    color: var(--color-text-primary);
    transition: border-color var(--transition-speed);
}

input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.2);
}