.help-page { padding-top: 64px; min-height: 100vh; background: var(--color-bg-alt); }

.help-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 48px 0 40px;
    text-align: center;
}

.help-hero--small {
    padding: 20px 0;
    text-align: left;
}

.help-hero-title { color: #fff; font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.help-hero-desc { color: rgba(255,255,255,.75); font-size: 15px; margin-bottom: 24px; }

.help-search-box {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
}

.help-search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-light);
    pointer-events: none;
}

.help-search-input {
    width: 100%;
    padding: 12px 16px 12px 48px;
    border: none;
    border-radius: var(--radius);
    font-size: 15px;
    background: #fff;
    color: var(--color-text);
    outline: none;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition);
}

.help-search-input:focus { box-shadow: 0 0 0 3px rgba(224,122,47,.25), var(--shadow-md); }

.help-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: rgba(255,255,255,.7);
    flex-wrap: wrap;
}

.help-breadcrumb a {
    color: rgba(255,255,255,.85);
    transition: color var(--transition);
}

.help-breadcrumb a:hover { color: #fff; }

.help-breadcrumb-sep {
    color: rgba(255,255,255,.4);
    font-size: 12px;
}

.container.help-body {
    display: flex;
    gap: 24px;
    padding: 40px 24px 48px;
}

.help-sidebar {
    width: 240px;
    flex-shrink: 0;
    position: sticky;
    top: 88px;
    max-height: calc(100vh - 112px);
    overflow-y: auto;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 0;
}

.help-cat-group { margin-bottom: 4px; }

.help-cat-title {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    transition: color var(--transition);
}
.help-cat-title:hover { color: var(--color-accent); }
.help-cat-title.active { color: var(--color-accent); }

.help-cat-item {
    display: block;
    padding: 6px 16px 6px 28px;
    font-size: 13px;
    color: var(--color-text-secondary);
    transition: all var(--transition);
}
.help-cat-item:hover { color: var(--color-accent); background: var(--color-primary-light); }
.help-cat-item.active { color: var(--color-accent); font-weight: 600; background: var(--color-primary-light); }

.help-content {
    flex: 1;
    min-width: 0;
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
}

.help-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary-light);
}

.help-welcome {
    text-align: center;
    padding: 48px 0;
    color: var(--color-text-secondary);
}

.help-welcome-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: 16px;
}

.help-welcome-icon svg { width: 32px; height: 32px; }

.help-welcome h2 { font-size: 18px; color: var(--color-text); margin-bottom: 8px; }
.help-welcome p { font-size: 14px; }

.help-article-list { list-style: none; }

.help-article-item {
    display: block;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition);
}

.help-article-item:last-child { border-bottom: none; }
.help-article-item:hover { color: var(--color-accent); }

.help-article-title { font-size: 15px; font-weight: 500; margin-bottom: 4px; }
.help-article-summary { font-size: 13px; color: var(--color-text-secondary); line-height: 1.5; }
.help-article-meta { font-size: 12px; color: var(--color-text-light); margin-top: 4px; }

.help-article-detail { animation: fadeIn .2s ease; }

.help-article-detail-title { font-size: 22px; font-weight: 700; margin-bottom: 8px; color: var(--color-primary); }

.help-article-detail-meta {
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--color-border);
}

.help-article-detail-body { font-size: 15px; line-height: 1.8; color: var(--color-text); }
.help-article-detail-body h1,.help-article-detail-body h2,.help-article-detail-body h3 { margin: 1.2em 0 .6em; color: var(--color-primary); }
.help-article-detail-body p { margin-bottom: .8em; }
.help-article-detail-body ul,.help-article-detail-body ol { padding-left: 1.5em; margin-bottom: .8em; }
.help-article-detail-body li { margin-bottom: .3em; }
.help-article-detail-body code { background: var(--color-primary-light); padding: 2px 6px; border-radius: 4px; font-size: 13px; }
.help-article-detail-body pre { background: var(--color-bg-dark); color: #e2e8f0; padding: 16px; border-radius: var(--radius-sm); overflow-x: auto; margin-bottom: 1em; }
.help-article-detail-body pre code { background: none; padding: 0; color: inherit; }
.help-article-detail-body img { max-width: 100%; border-radius: var(--radius-sm); margin: .5em 0; cursor: zoom-in; transition: filter var(--transition); }
.help-article-detail-body img:hover { filter: brightness(.95); }
.help-article-detail-body a { color: var(--color-accent); text-decoration: underline; }
.help-article-detail-body blockquote { border-left: 3px solid var(--color-accent); padding-left: 16px; color: var(--color-text-secondary); margin: 1em 0; }
.help-article-detail-body table { border-collapse: collapse; width: 100%; margin: 1em 0; }
.help-article-detail-body table td, .help-article-detail-body table th { border: 1px solid var(--color-border); padding: 8px 12px; }
.help-article-detail-body table th { background: var(--color-bg-alt); font-weight: 600; }

.help-article-nav {
    display: flex;
    gap: 16px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.help-nav-prev, .help-nav-next {
    flex: 1;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    color: inherit;
    text-decoration: none;
}

.help-nav-prev:hover, .help-nav-next:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
}

.help-nav-next { text-align: right; }
.help-nav-disabled { visibility: hidden; }

.help-nav-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-light);
    margin-bottom: 4px;
}

.help-nav-title {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.help-empty { text-align: center; padding: 48px 0; color: var(--color-text-light); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.help-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, .85);
    backdrop-filter: blur(2px);
    padding: 24px;
}

.help-lightbox.open { display: flex; animation: lightboxFade .2s ease; }
.help-lightbox-inner { position: relative; max-width: 92vw; max-height: 92vh; }
.help-lightbox-img { max-width: 92vw; max-height: 92vh; border-radius: var(--radius); box-shadow: 0 20px 60px rgba(0,0,0,.4); display: block; }
.help-lightbox-close {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 40px;
    height: 40px;
    line-height: 36px;
    text-align: center;
    font-size: 28px;
    color: #fff;
    background: rgba(0,0,0,.5);
    border: 1px solid rgba(255,255,255,.4);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition);
}
.help-lightbox-close:hover { background: rgba(0,0,0,.8); }
.help-lightbox-caption { margin-top: 12px; color: rgba(255,255,255,.85); font-size: 13px; text-align: center; }

@keyframes lightboxFade { from { opacity: 0; } to { opacity: 1; } }

@media (max-width: 768px) {
    .help-lightbox { padding: 12px; }
    .container.help-body { flex-direction: column; }
    .help-sidebar { width: 100%; position: static; max-height: none; }
    .help-content { padding: 20px; }
    .help-hero { padding: 32px 0 28px; }
    .help-hero-title { font-size: 22px; }
    .help-article-nav { flex-direction: column; }
    .help-nav-next { text-align: left; }
    .help-page { padding-top: 56px; }
    .help-search-input { font-size: 14px; padding: 10px 14px 10px 42px; }
    .help-article-detail-title { font-size: 18px; }
    .help-article-detail-body { font-size: 14px; }
}

@media (max-width: 480px) {
    .help-content { padding: 16px; }
    .help-hero-desc { font-size: 13px; }
}