:root {
    --forum-ink: var(--color-ink);
    --forum-muted: var(--color-muted);
    --forum-line: var(--color-line);
    --forum-paper: var(--color-surface);
    --forum-accent: var(--color-primary);
    --forum-accent-soft: var(--color-primary-soft);
    --forum-warm: var(--color-primary-tint);
    --forum-shadow: var(--shadow-card);
}

.forum-page {
    min-height: calc(100vh - var(--site-header-h, 64px));
    background: var(--color-page);
    color: var(--forum-ink);
    padding-bottom: 64px;
    font-family: var(--font-sans);
}

.forum-hero {
    padding: 64px 0 40px;
    text-align: center;
}

.forum-hero-compact {
    padding: 40px 0 28px;
    text-align: left;
}

.forum-brand {
    margin: 0 0 12px;
    font-family: var(--font-sans);
    font-size: 14px;
    letter-spacing: 0.18em;
    color: var(--forum-accent);
}

.forum-brand a {
    color: inherit;
}

.forum-hero-title {
    margin: 0 0 12px;
    font-family: var(--font-sans);
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
}

.forum-hero-desc {
    margin: 0 0 20px;
    color: var(--forum-muted);
    font-size: 15px;
}

.forum-hero-desc a {
    color: var(--forum-accent);
}

.forum-hero-action {
    margin: 0;
}

.forum-hero-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

.forum-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: var(--fs-aux);
    font-weight: 600;
    text-decoration: none;
    transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease), border-color var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.forum-btn:hover,
.forum-btn:focus {
    text-decoration: none;
    transform: none;
}

.forum-btn-primary {
    background: var(--forum-accent);
    color: #fff;
}

.forum-btn-primary:hover {
    color: #fff;
    background: var(--color-primary-hover);
}

.forum-btn-ghost {
    background: transparent;
    border-color: var(--forum-line);
    color: var(--forum-ink);
}

.forum-search {
    display: inline-flex;
    width: min(100%, 320px);
    background: #fff;
    border: 1px solid var(--forum-line);
    border-radius: 999px;
    overflow: hidden;
    box-shadow: var(--forum-shadow);
}

.forum-search input {
    flex: 1;
    border: 0;
    padding: 10px 16px;
    outline: none;
    background: transparent;
}

.forum-search button {
    border: 0;
    background: transparent;
    padding: 0 16px;
    color: var(--forum-accent);
}

.forum-board-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 18px;
}

.forum-board-card {
    display: flex;
    gap: 16px;
    padding: var(--card-padding);
    background: var(--forum-paper);
    border: 1px solid var(--forum-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--forum-shadow);
    color: inherit;
    text-decoration: none;
    transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.forum-board-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-card-hover);
    color: inherit;
    text-decoration: none;
}

.forum-board-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--forum-accent-soft);
    color: var(--forum-accent);
    font-size: 20px;
    flex-shrink: 0;
}

.forum-board-name {
    margin: 0 0 6px;
    font-size: 18px;
    font-weight: 700;
}

.forum-board-desc {
    margin: 0 0 12px;
    color: var(--forum-muted);
    font-size: 13px;
    line-height: 1.5;
    min-height: 2.8em;
}

.forum-board-meta {
    display: flex;
    gap: 14px;
    color: var(--forum-muted);
    font-size: 13px;
}

.forum-panel,
.forum-post-card,
.forum-reply-box {
    background: var(--forum-paper);
    border: 1px solid var(--forum-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--forum-shadow);
}

.forum-panel {
    padding: 8px 0;
}

.forum-form-panel {
    padding: 28px 20px;
}

.forum-thread-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.forum-thread-item {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 22px;
    border-bottom: 1px solid var(--forum-line);
}

.forum-thread-item:last-child {
    border-bottom: 0;
}

.forum-thread-item.is-top {
    background: linear-gradient(90deg, rgba(195, 122, 103, 0.1), transparent 60%);
}

.forum-thread-title {
    display: inline-block;
    font-size: 16px;
    font-weight: 600;
    color: var(--forum-ink);
    margin: 4px 0;
}

.forum-thread-title:hover {
    color: var(--forum-accent);
    text-decoration: none;
}

.forum-thread-sub {
    color: var(--forum-muted);
    font-size: 13px;
}

.forum-thread-sub a {
    color: inherit;
}

.forum-thread-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 6px;
    color: var(--forum-muted);
    font-size: 13px;
    white-space: nowrap;
}

.forum-flag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 12px;
    margin-right: 6px;
    vertical-align: middle;
}

.forum-flag-top {
    background: rgba(2, 149, 182, 0.15);
    color: var(--forum-accent);
}

.forum-flag-closed {
    background: rgba(10, 46, 54, 0.08);
    color: var(--forum-muted);
}

.forum-post-card {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    overflow: hidden;
}

.forum-post-author {
    width: 140px;
    padding: 22px 16px;
    background: rgba(2, 149, 182, 0.04);
    border-right: 1px solid var(--forum-line);
    text-align: center;
    flex-shrink: 0;
}

.forum-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 10px;
}

.forum-author-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--forum-ink);
    word-break: break-all;
}

.forum-author-name:hover {
    color: var(--forum-accent);
    text-decoration: none;
}

.forum-floor {
    display: inline-block;
    margin-top: 8px;
    font-size: 12px;
    color: var(--forum-muted);
}

.forum-post-body {
    flex: 1;
    padding: 22px 24px;
    min-width: 0;
}

.forum-content {
    font-size: 15px;
    line-height: 1.75;
    word-break: break-word;
    min-height: 80px;
}

.forum-content.editor-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}

.forum-content.editor-content p {
    margin: 0 0 1em;
}

.forum-content.editor-content h2,
.forum-content.editor-content h3 {
    margin: 1.4em 0 0.6em;
    font-family: var(--font-sans);
}

.forum-content.editor-content ul,
.forum-content.editor-content ol {
    margin: 0 0 1em;
    padding-left: 1.4em;
}

.forum-content.editor-content blockquote {
    margin: 0 0 1em;
    padding: 8px 14px;
    border-left: 3px solid var(--forum-accent);
    background: rgba(195, 122, 103, 0.1);
    color: var(--forum-muted);
}

.forum-post-foot {
    margin-top: 20px;
    padding-top: 12px;
    border-top: 1px dashed var(--forum-line);
    display: flex;
    justify-content: space-between;
    color: var(--forum-muted);
    font-size: 13px;
}

.forum-del-reply {
    color: #c0392b;
}

.forum-reply-box {
    padding: 22px 24px;
    margin-top: 8px;
}

.forum-reply-title {
    margin: 0 0 14px;
    font-size: 18px;
}

.forum-reply-input {
    border-radius: 12px;
    resize: vertical;
}

.forum-reply-actions {
    margin-top: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.forum-count,
.help-block {
    color: var(--forum-muted);
    font-size: 13px;
}

.forum-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--forum-muted);
}

.forum-empty a {
    color: var(--forum-accent);
}

.forum-pager {
    padding: 18px;
    text-align: center;
}

.forum-pager:empty {
    display: none;
}

@media (max-width: 767px) {
    .forum-post-card {
        flex-direction: column;
    }

    .forum-post-author {
        width: 100%;
        border-right: 0;
        border-bottom: 1px solid var(--forum-line);
        display: flex;
        align-items: center;
        gap: 12px;
        text-align: left;
        padding: 16px;
    }

    .forum-avatar {
        width: 48px;
        height: 48px;
        margin-bottom: 0;
    }

    .forum-floor {
        margin-top: 0;
        margin-left: auto;
    }

    .forum-thread-item {
        flex-direction: column;
    }

    .forum-thread-stats {
        flex-direction: row;
        align-items: center;
    }
}