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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: transparent;
    overflow: auto;
    user-select: none;
}

.guide-container {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.85);
    width: 1200px;
    height: 800px;
    background: #0f0f0f;
    border: 1px solid #2d2d2d;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.guide-header {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    padding: 18px 30px;
    border-bottom: 1px solid #2d2d2d;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.guide-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(34, 197, 94, 0.03) 50%, transparent 100%);
    pointer-events: none;
}

.header-left,
.header-center,
.header-right {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.header-left {
    flex: 1;
}

.header-center {
    flex: 0 0 auto;
}

.header-right {
    flex: 1;
    justify-content: flex-end;
    gap: 15px;
}

.guide-logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: #22c55e;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.logo-icon i {
    font-size: 18px;
    color: #ffffff;
}

.guide-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.guide-title {
    color: #ffffff;
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    line-height: 1.2;
}

.guide-subtitle {
    color: #94a3b8;
    font-size: 11px;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.7;
}

.close-btn {
    width: 28px;
    height: 28px;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    border: 1px solid #2d2d2d;
    transition: all 0.2s ease;
    background: #2d2d2d;
    color: #94a3b8;
}

.close-btn:hover {
    background: #ef4444;
    border-color: #ef4444;
    color: #ffffff;
}

.guide-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 250px;
    background: #1a1a1a;
    border-right: 1px solid #2d2d2d;
    overflow-y: auto;
    padding: 20px 0;
}

.sidebar-section {
    margin-bottom: 20px;
}

.sidebar-title {
    color: #94a3b8;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0 20px;
    margin-bottom: 8px;
}

.sidebar-menu {
    list-style-type: none;
}

.sidebar-menu-item {
    padding: 12px 20px;
    color: #ffffff;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.sidebar-menu-item:hover {
    background: rgba(45, 45, 45, 0.6);
}

.sidebar-menu-item.active {
    background: rgba(34, 197, 94, 0.1);
    border-left: 3px solid #22c55e;
}

.sidebar-menu-item i {
    font-size: 14px;
    color: #94a3b8;
    width: 20px;
    text-align: center;
}

.sidebar-menu-item.active i {
    color: #22c55e;
}

.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
    background: #0f0f0f;
}

.content-section {
    margin-bottom: 30px;
}

.section-title {
    color: #ffffff;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: #22c55e;
    font-size: 20px;
}

.section-subtitle {
    color: #ffffff;
    font-size: 18px;
    font-weight: 600;
    margin: 20px 0 10px;
}

.section-text {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 15px;
}

.guide-card {
    background: #1a1a1a;
    border: 1px solid #2d2d2d;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
}

.guide-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #22c55e;
    opacity: 0.7;
}

.guide-list {
    list-style-type: none;
    margin: 15px 0;
}

.guide-list-item {
    color: #94a3b8;
    font-size: 14px;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid #2d2d2d;
}

.guide-list-item:last-child {
    border-bottom: none;
}

.guide-list-item i {
    color: #22c55e;
    font-size: 12px;
}

.guide-tip {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.guide-tip i {
    color: #22c55e;
    font-size: 16px;
    margin-top: 2px;
}

.guide-tip-text {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
}

.guide-warning {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.guide-warning i {
    color: #ef4444;
    font-size: 16px;
    margin-top: 2px;
}

.guide-warning-text {
    color: #94a3b8;
    font-size: 14px;
    line-height: 1.6;
}

.guide-image {
    width: 100%;
    border-radius: 8px;
    margin: 15px 0;
    border: 1px solid #2d2d2d;
}

.command-block {
    background: #000000;
    border: 1px solid #2d2d2d;
    border-radius: 6px;
    padding: 12px 15px;
    margin: 15px 0;
    font-family: 'Consolas', 'Courier New', monospace;
    color: #ffffff;
    font-size: 13px;
    overflow-x: auto;
}

.key-command {
    background: #2d2d2d;
    color: #ffffff;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    font-family: 'Consolas', 'Courier New', monospace;
    margin: 0 2px;
}

@media (max-width: 1200px) {
    .guide-container {
        width: 90%;
        height: 90%;
    }
}

@media (max-width: 768px) {
    .guide-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid #2d2d2d;
    }
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #1a1a1a;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: #2d2d2d;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #3d3d3d;
}

.main-content,
.sidebar {
    scrollbar-width: thin;
    scrollbar-color: #2d2d2d #1a1a1a;
}

.hidden {
    display: none !important;
}