:root {
    --primary-bg: #ffffff;
    --secondary-surface: #fbfbfd;
    --primary-text: #1d1d1f;
    --secondary-text: #6e6e73;
    --success-color: #0071e3;
    --success-text: #fff;
    --divider-color: #e5e5ea;
    --link-color: #0071e3;
    --warning-tone: #ff9500;
    --hover-bg: #f5f5f7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    
    /* Цветовая палитра */
    --accent-blue: #0071e3;
    --accent-purple: #af52de;
    --accent-pink: #ff2d55;
    --accent-orange: #ff9500;
    --accent-green: #34c759;
    --accent-teal: #5ac8fa;
    --accent-indigo: #5856d6;
    
    /* Градиенты */
    --gradient-primary: linear-gradient(135deg, #0071e3 0%, #5856d6 100%);
    --gradient-accent: linear-gradient(135deg, #ff2d55 0%, #ff9500 100%);
    --gradient-success: linear-gradient(135deg, #34c759 0%, #5ac8fa 100%);
    --gradient-purple: linear-gradient(135deg, #af52de 0%, #5856d6 100%);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #ffffff;
    color: var(--primary-text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 17px;
    line-height: 1.47059;
    font-weight: 400;
    letter-spacing: -0.022em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s ease;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
    text-underline-offset: 2px;
}

.container-primary {
    max-width: 1024px;
    margin-inline: auto;
    margin-block: 4rem;
    padding-inline: 2rem;
}

@media (max-width: 768px) {
    .container-primary {
        margin-block: 2rem;
        padding-inline: 1.25rem;
    }
}

.header-section {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 3rem;
}

.header-section h1,
.header-title {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.1;
    color: var(--primary-text);
}

.badges-container {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.macos-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, rgba(0, 113, 227, 0.1) 0%, rgba(88, 86, 214, 0.1) 100%);
    border: 1px solid rgba(0, 113, 227, 0.2);
    color: var(--accent-blue);
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.apple-icon {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
}

@media (max-width: 768px) {
    .header-section h1,
    .header-title {
        font-size: 2.25rem;
    }
    
    .macos-badge {
        font-size: 0.8125rem;
        padding: 0.4375rem 0.875rem;
    }
}

.publisher-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--hover-bg);
    border: 1px solid var(--divider-color);
    color: var(--secondary-text);
    padding: 0.5rem 0.875rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.publisher-badge:hover {
    background: var(--divider-color);
}

.verified-icon {
    flex-shrink: 0;
    color: var(--accent-green);
    opacity: 1;
}

.content-block {
    background: #ffffff;
    border: 1px solid var(--divider-color);
    border-radius: 1.25rem;
    padding: 2.5rem;
    margin-block: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.content-block:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

@media (max-width: 768px) {
    .content-block {
        padding: 1.75rem;
        border-radius: 1.25rem;
    }
}

.content-block h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
    color: var(--primary-text);
}

@media (max-width: 768px) {
    .content-block h2 {
        font-size: 1.375rem;
    }
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--primary-text);
}

@media (max-width: 768px) {
    .steps-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .step-panel {
        padding: 1.5rem;
    }
}

.subtitle-text {
    color: var(--secondary-text);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

@media (max-width: 768px) {
    .subtitle-text {
        font-size: 1.0625rem;
    }
}

.layout-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(16.25rem, 1fr));
    gap: 1rem;
}

.installation-panel {
    background: #ffffff;
    border: 1px solid var(--divider-color);
    border-radius: 1rem;
    padding: 1.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.installation-panel:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

@media (max-width: 768px) {
    .installation-panel {
        padding: 1.5rem;
    }
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    border-radius: 1rem;
    border: none;
    padding: 0.875rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    letter-spacing: -0.01em;
}

.button-accent {
    background: var(--accent-blue);
    color: var(--success-text);
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.25);
}

.button-accent:hover {
    background: #0051c7;
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.35);
    transform: translateY(-1px);
}

.button-accent:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(0, 113, 227, 0.25);
}

.button-neutral {
    background: var(--hover-bg);
    color: var(--primary-text);
    border: 1px solid var(--divider-color);
}

.button-neutral:hover {
    background: var(--divider-color);
    transform: translateY(-1px);
}

.button-full-width {
    width: 100%;
}

.alert-box {
    border-left: 4px solid;
    border-image: var(--gradient-accent) 1;
    padding: 0.625rem 0.75rem;
    background: linear-gradient(135deg, rgba(255, 45, 85, 0.05) 0%, rgba(255, 149, 0, 0.05) 100%);
    border-radius: 0.5rem;
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.step-panel {
    background: #ffffff;
    border: 1px solid var(--divider-color);
    border-radius: 1rem;
    padding: 1.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.step-panel:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.step-panel-blue {
    border-top: 3px solid var(--accent-blue);
}

.step-panel-green {
    border-top: 3px solid var(--accent-green);
}

.step-panel h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--primary-text);
}

.video-container {
    margin-top: 2rem;
}

video.video-demo {
    display: block;
    width: 100%;
    max-height: 28rem;
    border: 1px solid var(--divider-color);
    border-radius: 1rem;
    background: var(--hover-bg);
    object-fit: cover;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: all 0.2s ease;
}

video.video-demo:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

code,
.keyboard-key {
    background: var(--hover-bg);
    border: 1px solid var(--divider-color);
    border-radius: 0.375rem;
    padding: 0.25rem 0.5rem;
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
    font-size: 0.9em;
    font-weight: 500;
    color: var(--primary-text);
}

.command-container {
    display: flex;
    gap: 0.75rem;
    align-items: stretch;
}

.command-container input {
    flex: 1;
    background: #ffffff;
    border: 1px solid var(--divider-color);
    border-radius: 0.75rem;
    padding: 0.875rem 1.125rem;
    color: var(--primary-text);
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, monospace;
    font-size: 0.9375rem;
    transition: all 0.2s ease;
}

.command-container input:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.1);
}

.command-container input:hover:not(:focus) {
    border-color: rgba(0, 113, 227, 0.3);
}

.instruction-list {
    font-size: 1rem;
    line-height: 1.6;
    padding-left: 1.5rem;
    margin-bottom: 0;
    color: var(--primary-text);
}

.instruction-list li {
    margin-bottom: 0.625rem;
}

.instruction-list li:last-child {
    margin-bottom: 0;
}

.page-footer {
    margin-block-start: 4rem;
    margin-block-end: 2rem;
    color: var(--secondary-text);
    font-size: 0.875rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    border-top: 1px solid var(--divider-color);
    padding-top: 2rem;
}

.page-footer a {
    color: var(--secondary-text);
    font-size: 0.8125rem;
}

.page-footer a:hover {
    color: var(--link-color);
}