.YXYH-pc-page-bbs-hall {
    width: var(--ls-width, 1200px);
    margin: 20px auto;
    padding: 0 0 60px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    position: relative;
    isolation: isolate;
    font-family: var(--ls-font-family, system-ui, -apple-system, sans-serif);
}

/* Ambient Background */
.YXYH-pc-page-bbs-hall .bbs-ambient-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    overflow: hidden;
    border-radius: var(--ls-radius-2xl, 24px);
}
.YXYH-pc-page-bbs-hall .ambient-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
}
.YXYH-pc-page-bbs-hall .blob-1 {
    width: 600px;
    height: 600px;
    top: -200px;
    left: -100px;
    background: radial-gradient(circle, color-mix(in srgb, var(--ls-primary, #0052d9) 15%, transparent) 0%, transparent 70%);
}
.YXYH-pc-page-bbs-hall .blob-2 {
    width: 500px;
    height: 500px;
    top: 20%;
    right: -150px;
    background: radial-gradient(circle, color-mix(in srgb, var(--ls-success, #2ba471) 12%, transparent) 0%, transparent 70%);
}
.YXYH-pc-page-bbs-hall .blob-3 {
    width: 700px;
    height: 700px;
    bottom: -100px;
    left: 20%;
    background: radial-gradient(circle, color-mix(in srgb, var(--ls-warning, #e37318) 10%, transparent) 0%, transparent 70%);
}

/* Hero Section */
.YXYH-pc-page-bbs-hall .bbs-hero-section {
    position: relative;
    border-radius: var(--ls-radius-2xl, 24px);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 100%),
                linear-gradient(120deg, color-mix(in srgb, var(--ls-primary, #0052d9) 8%, #fff) 0%, color-mix(in srgb, var(--ls-success, #2ba471) 5%, #fff) 100%);
    box-shadow: var(--ls-shadow-xs);
    overflow: hidden;
    padding: 48px;
}

.YXYH-pc-page-bbs-hall .bbs-hero-section::before {
    content: '';
    position: absolute;
    top: 0; right: 0; bottom: 0; left: 0;
    background: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg"><circle cx="20" cy="20" r="1" fill="rgba(0,0,0,0.03)"/></svg>') repeat;
    pointer-events: none;
}

.YXYH-pc-page-bbs-hall .bbs-hero-inner {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.YXYH-pc-page-bbs-hall .bbs-hero-content {
    flex: 1;
    max-width: 680px;
}

.YXYH-pc-page-bbs-hall .bbs-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 100px;
    background: color-mix(in srgb, var(--ls-primary, #0052d9) 10%, #fff);
    color: var(--ls-primary, #0052d9);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.YXYH-pc-page-bbs-hall .bbs-hero-title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    color: var(--ls-text-primary, #111);
    margin: 0 0 20px 0;
    letter-spacing: -1px;
}

.YXYH-pc-page-bbs-hall .bbs-hero-title span {
    background: linear-gradient(120deg, var(--ls-primary, #0052d9), var(--ls-success, #2ba471));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.YXYH-pc-page-bbs-hall .bbs-hero-desc {
    font-size: 18px;
    line-height: 1.8;
    color: var(--ls-text-secondary, #555);
    margin: 0;
}

.YXYH-pc-page-bbs-hall .bbs-hero-stats-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    width: 360px;
}

.YXYH-pc-page-bbs-hall .stat-box {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    border-radius: var(--ls-radius-xl, 16px);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    box-shadow: var(--ls-shadow-xs);
    transition: transform 0.3s ease;
}

.YXYH-pc-page-bbs-hall .stat-box:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.9);
}

.YXYH-pc-page-bbs-hall .stat-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: linear-gradient(135deg, color-mix(in srgb, var(--ls-primary, #0052d9) 15%, #fff), color-mix(in srgb, var(--ls-primary, #0052d9) 5%, #fff));
    color: var(--ls-primary, #0052d9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.YXYH-pc-page-bbs-hall .stat-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.YXYH-pc-page-bbs-hall .stat-value {
    font-size: 24px;
    font-weight: 800;
    color: var(--ls-text-primary, #111);
    line-height: 1;
}

.YXYH-pc-page-bbs-hall .stat-text {
    font-size: 13px;
    color: var(--ls-text-secondary, #666);
}

/* Main Layout */
.YXYH-pc-page-bbs-hall .bbs-layout-wrapper {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    align-items: start;
}

.YXYH-pc-page-bbs-hall .bbs-layout-wrapper.no-sidebar {
    grid-template-columns: minmax(0, 1fr);
}

.YXYH-pc-page-bbs-hall .bbs-main-content {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.YXYH-pc-page-bbs-hall .bbs-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 48px 16px;
    border-radius: var(--ls-radius-xl, 16px);
    border: 1px dashed var(--ls-border, #eee);
    background: var(--ls-bg-light, #f9fafb);
    color: var(--ls-text-muted, #999);
}

.YXYH-pc-page-bbs-hall .bbs-empty i {
    font-size: 30px;
    opacity: 0.5;
}

.YXYH-pc-page-bbs-hall .bbs-empty p {
    margin: 0;
    font-size: 14px;
}

/* Category Block */
.YXYH-pc-page-bbs-hall .bbs-category-block {
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: linear-gradient(
        180deg,
        var(--ls-bg-white, #fff) 0%,
        color-mix(in srgb, var(--ls-primary, #0052d9) 2%, var(--ls-bg-white, #fff)) 100%
    );
    border-radius: var(--ls-border-radius, 12px);
    box-shadow: var(--ls-shadow-xs);
    padding: 24px;
}

.YXYH-pc-page-bbs-hall .category-header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.YXYH-pc-page-bbs-hall .category-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.YXYH-pc-page-bbs-hall .category-icon-bg {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--ls-primary, #0052d9);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    box-shadow: var(--ls-shadow-xs);
}

.YXYH-pc-page-bbs-hall .category-title-wrap h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
    color: var(--ls-text-primary, #111);
}

.YXYH-pc-page-bbs-hall .category-subtitle {
    margin: 0;
    font-size: 14px;
    color: var(--ls-text-secondary, #666);
    padding-left: 48px;
}

.YXYH-pc-page-bbs-hall .bbs-board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 18px;
}

.YXYH-pc-page-bbs-hall .bbs-board-grid.grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

/* Board Cards */
.YXYH-pc-page-bbs-hall .board-card {
    --board-accent: var(--ls-primary, #0052d9);
    position: relative;
    background: linear-gradient(
        180deg,
        var(--ls-bg-white, #fff) 0%,
        var(--ls-bg-light, #f8fafc) 100%
    );
    border-radius: var(--ls-radius-xl, 16px);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-decoration: none;
    border: 1px solid color-mix(in srgb, var(--ls-border, #e5e7eb) 72%, var(--ls-bg-white, #fff));
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, filter 0.25s ease;
    overflow: hidden;
}

.YXYH-pc-page-bbs-hall .board-card.style-tech {
    --board-accent: var(--ls-primary, #0052d9);
}

.YXYH-pc-page-bbs-hall .board-card.style-ai {
    --board-accent: var(--ls-success, #2ba471);
}

.YXYH-pc-page-bbs-hall .board-card.style-design {
    --board-accent: var(--ls-warning, #e37318);
}

.YXYH-pc-page-bbs-hall .board-card.style-life {
    --board-accent: var(--ls-text-secondary, #666);
}

.YXYH-pc-page-bbs-hall .board-card.style-game {
    --board-accent: var(--ls-danger, #ef4444);
}

.YXYH-pc-page-bbs-hall .board-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--board-accent) 54%, var(--ls-border, #e5e7eb));
    background: linear-gradient(
        180deg,
        var(--ls-bg-white, #fff) 0%,
        var(--ls-bg-light, #f8fafc) 100%
    );
    filter: none;
}

.YXYH-pc-page-bbs-hall .board-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    bottom: 14px;
    width: 3px;
    border-radius: 0 var(--ls-radius-full, 9999px) var(--ls-radius-full, 9999px) 0;
    background:
        linear-gradient(
            180deg,
            transparent 0%,
            color-mix(in srgb, var(--board-accent) 42%, transparent) 32%,
            var(--board-accent) 50%,
            color-mix(in srgb, var(--board-accent) 42%, transparent) 68%,
            transparent 100%
        );
    opacity: 0;
    transform: scaleY(0.24);
    transform-origin: center;
    transition: opacity 0.24s ease, transform 0.3s ease;
    pointer-events: none;
    z-index: 2;
}

.YXYH-pc-page-bbs-hall .board-card:hover::before {
    opacity: 0.92;
    transform: scaleY(1);
}

.YXYH-pc-page-bbs-hall .board-card::after {
    content: '';
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 0;
    width: auto;
    height: 2px;
    border-radius: var(--ls-radius-full, 9999px);
    background: linear-gradient(
        90deg,
        transparent 0%,
        color-mix(in srgb, var(--board-accent) 35%, transparent) 30%,
        var(--board-accent) 50%,
        color-mix(in srgb, var(--board-accent) 35%, transparent) 70%,
        transparent 100%
    );
    opacity: 0;
    transform: scaleX(0.2);
    transform-origin: center;
    transition: transform 0.3s ease, opacity 0.24s ease;
    pointer-events: none;
    z-index: 2;
}

.YXYH-pc-page-bbs-hall .board-card:hover::after {
    transform: scaleX(1);
    opacity: 0.92;
}

@media (prefers-reduced-motion: reduce) {
    .YXYH-pc-page-bbs-hall .board-card,
    .YXYH-pc-page-bbs-hall .board-card::before,
    .YXYH-pc-page-bbs-hall .board-card::after {
        transition-duration: 0.01ms;
    }
}

.YXYH-pc-page-bbs-hall .board-head {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    min-width: 0;
    padding-right: 24px;
    position: relative;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .board-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--ls-radius-lg, 12px);
    background: linear-gradient(
        145deg,
        var(--ls-bg-white, #fff),
        var(--ls-bg-hover, #f1f5f9)
    );
    border: 1px solid var(--ls-border-light, #f3f4f6);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
    transition: transform 0.25s ease;
}

.YXYH-pc-page-bbs-hall .board-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: inherit;
}

.YXYH-pc-page-bbs-hall .board-card:hover .board-icon {
    background: linear-gradient(
        145deg,
        var(--ls-bg-white, #fff),
        var(--ls-bg-hover, #f1f5f9)
    );
    border-color: color-mix(in srgb, var(--board-accent) 30%, var(--ls-border-light, #f3f4f6));
    transform: translateY(-1px) scale(1.04) rotate(-5deg);
    filter: saturate(1.05);
}

.YXYH-pc-page-bbs-hall .board-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .board-content h3 {
    margin: 0 0 8px 0;
    font-size: 19px;
    font-weight: 700;
    color: var(--ls-text-primary, #111);
    transition: color 0.25s ease;
    line-height: 1.35;
}

.YXYH-pc-page-bbs-hall .board-card:hover .board-content h3 {
    color: var(--board-accent);
}

.YXYH-pc-page-bbs-hall .board-content p {
    margin: 0;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ls-text-secondary, #4b5563);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.YXYH-pc-page-bbs-hall .board-foot {
    margin-top: 2px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    position: relative;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    padding: 8px 10px;
    border-radius: var(--ls-radius-full, 9999px);
    background: color-mix(in srgb, var(--ls-bg-white, #fff) 72%, var(--ls-bg-light, #f8fafc));
    border: 1px solid color-mix(in srgb, var(--ls-border-light, #f3f4f6) 68%, var(--ls-bg-white, #fff));
    transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.YXYH-pc-page-bbs-hall .board-card:hover .meta-item {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--ls-bg-white, #fff) 72%, var(--ls-bg-light, #f8fafc));
    border-color: color-mix(in srgb, var(--board-accent) 20%, var(--ls-border-light, #f3f4f6));
}

.YXYH-pc-page-bbs-hall .meta-icon {
    width: 20px;
    height: 20px;
    border-radius: var(--ls-radius-sm, 4px);
    background: color-mix(in srgb, var(--ls-bg-white, #fff) 60%, var(--ls-bg-light, #f8fafc));
    color: color-mix(in srgb, var(--ls-text-muted, #9ca3af) 86%, var(--ls-bg-white, #fff));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}

.YXYH-pc-page-bbs-hall .board-card:hover .meta-icon {
    background: color-mix(in srgb, var(--board-accent) 10%, var(--ls-bg-white, #fff));
    color: color-mix(in srgb, var(--board-accent) 72%, var(--ls-text-secondary, #4b5563));
}

.YXYH-pc-page-bbs-hall .meta-label {
    font-size: 12px;
    line-height: 1.2;
    color: var(--ls-text-muted, #9ca3af);
    white-space: nowrap;
}

.YXYH-pc-page-bbs-hall .meta-value {
    margin-left: auto;
    font-size: 12px;
    line-height: 1;
    font-weight: 700;
    color: var(--ls-text-secondary, #4b5563);
    text-align: right;
    white-space: nowrap;
}

.YXYH-pc-page-bbs-hall .meta-value.is-hot {
    color: var(--ls-danger, #ef4444);
    font-weight: 700;
}

.YXYH-pc-page-bbs-hall .board-arrow {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 20px;
    color: var(--ls-text-muted, #9ca3af);
    opacity: 0;
    transform: translate(-2px, 2px);
    transition: transform 0.25s ease, color 0.25s ease, opacity 0.25s ease;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .board-card:hover .board-arrow {
    opacity: 1;
    transform: translate(0, 0);
    color: var(--board-accent);
}

.YXYH-pc-page-bbs-hall .board-card:focus-visible {
    outline: none;
    border-color: color-mix(in srgb, var(--board-accent) 45%, var(--ls-border, #e5e7eb));
    transform: translateY(-3px);
}

/* Sidebar */
.YXYH-pc-page-bbs-hall .bbs-sidebar {
    position: sticky;
    top: calc(var(--ls-header-height, 64px) + 24px);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.YXYH-pc-page-bbs-hall .sidebar-widget {
    background: #fff;
    border-radius: var(--ls-radius-xl, 16px);
    padding: 24px;
    box-shadow: var(--ls-shadow-xs);
}

.YXYH-pc-page-bbs-hall .widget-action-card {
    position: relative;
    overflow: hidden;
    padding: 32px 24px;
    text-align: center;
    background: linear-gradient(135deg, var(--ls-primary, #0052d9), color-mix(in srgb, var(--ls-primary, #0052d9) 70%, #000));
    color: #fff;
    border: none;
}

.YXYH-pc-page-bbs-hall .action-card-bg {
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml;utf8,<svg width="40" height="40" viewBox="0 0 40 40" xmlns="http://www.w3.org/2000/svg"><circle cx="20" cy="20" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
    pointer-events: none;
}

.YXYH-pc-page-bbs-hall .widget-action-card h3 {
    margin: 0 0 8px 0;
    font-size: 20px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .widget-action-card p {
    margin: 0 0 24px 0;
    font-size: 13px;
    opacity: 0.8;
    position: relative;
    z-index: 1;
}

.YXYH-pc-page-bbs-hall .widget-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    background: #fff;
    color: var(--ls-primary, #0052d9);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    position: relative;
    z-index: 1;
    transition: transform 0.2s;
}

.YXYH-pc-page-bbs-hall .widget-btn:hover {
    transform: scale(1.02);
}

.YXYH-pc-page-bbs-hall .widget-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--ls-text-primary, #111);
}

.YXYH-pc-page-bbs-hall .widget-header i {
    color: var(--ls-primary, #0052d9);
    font-size: 18px;
}

.YXYH-pc-page-bbs-hall .widget-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
}

.YXYH-pc-page-bbs-hall .widget-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.YXYH-pc-page-bbs-hall .widget-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.YXYH-pc-page-bbs-hall .list-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--ls-primary, #0052d9) 40%, transparent);
    margin-top: 8px;
    flex-shrink: 0;
}

.YXYH-pc-page-bbs-hall .widget-list a {
    color: var(--ls-text-secondary, #555);
    font-size: 13px;
    line-height: 1.6;
    text-decoration: none;
    transition: color 0.2s;
}

.YXYH-pc-page-bbs-hall .widget-list a:hover {
    color: var(--ls-primary, #0052d9);
}

.YXYH-pc-page-bbs-hall .widget-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.YXYH-pc-page-bbs-hall .tag-item {
    padding: 6px 12px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--ls-primary, #0052d9) 5%, #f9f9f9);
    color: var(--ls-text-secondary, #555);
    font-size: 12px;
    text-decoration: none;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.YXYH-pc-page-bbs-hall .tag-item:hover {
    background: color-mix(in srgb, var(--ls-primary, #0052d9) 10%, #fff);
    color: var(--ls-primary, #0052d9);
    border-color: color-mix(in srgb, var(--ls-primary, #0052d9) 20%, transparent);
}

.YXYH-pc-page-bbs-hall .widget-users {
    display: flex;
    flex-wrap: wrap;
    gap: -8px;
}

.YXYH-pc-page-bbs-hall .user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid #fff;
    overflow: hidden;
    margin-right: -10px;
    transition: transform 0.2s, z-index 0.2s;
    position: relative;
    background: #f0f0f0;
}

.YXYH-pc-page-bbs-hall .user-avatar:hover {
    transform: translateY(-4px);
    z-index: 10;
}

.YXYH-pc-page-bbs-hall .user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}