/* ==========================================================================
   Xuhuan Forum · 前台样式
   颜色优先继承主题变量（--bg-primary / --text-primary / --border-color …），
   主题不存在这些变量时使用内置浅色/深色回退。
   ========================================================================== */

.xhf {
    --xhf-accent: var(--primary-color, #1e7bff);
    --xhf-energized: #f5a524;
    --xhf-panel: var(--bg-primary, #ffffff);
    --xhf-surface: var(--bg-secondary, #f5f7fa);
    --xhf-sunken: var(--bg-tertiary, #edf1f6);
    --xhf-text: var(--text-primary, #142033);
    --xhf-text-2: var(--text-secondary, #46546a);
    --xhf-muted: var(--text-muted, #7b8698);
    --xhf-line: var(--border-color, #e2e7ee);
    --xhf-line-soft: var(--border-light, #eef1f5);
    --xhf-danger: var(--danger, #e5484d);
    --xhf-success: var(--success, #2f9e68);
    --xhf-warning: var(--warning, #d98a00);
    --xhf-radius: 10px;
    --xhf-radius-sm: 6px;
    --xhf-navy: #0b1828;
    color: var(--xhf-text);
    font-size: 15px;
    line-height: 1.65;
}
@media (prefers-color-scheme: dark) {
    .xhf {
        --xhf-panel: var(--bg-primary, #121a26);
        --xhf-surface: var(--bg-secondary, #0d141e);
        --xhf-sunken: var(--bg-tertiary, #1a2433);
        --xhf-text: var(--text-primary, #e6ecf3);
        --xhf-text-2: var(--text-secondary, #b4c0cf);
        --xhf-muted: var(--text-muted, #7f8b9c);
        --xhf-line: var(--border-color, #243041);
        --xhf-line-soft: var(--border-light, #1c2735);
    }
}
.xhf *, .xhf *::before, .xhf *::after { box-sizing: border-box; }
.xhf :where(a) { color: inherit; text-decoration: none; }
.xhf :where(a):hover { color: var(--xhf-accent); }
.xhf :focus-visible { outline: 2px solid var(--xhf-accent); outline-offset: 2px; border-radius: 4px; }
.xhf svg.xhf-icon { flex: none; vertical-align: -0.15em; }
.xhf img { max-width: 100%; }
.xhf :where(h1, h2, h3) { color: var(--xhf-text); margin: 0; line-height: 1.3; }
.xhf-main { padding: 20px 0 56px; }
.xhf-container { max-width: var(--container-xl, 1280px); margin: 0 auto; padding: 0 20px; }

/* ---------- 按钮 ---------- */
.xhf-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    height: 36px; padding: 0 14px; border-radius: var(--xhf-radius-sm);
    border: 1px solid var(--xhf-line); background: var(--xhf-panel); color: var(--xhf-text);
    font-size: 14px; font-weight: 500; line-height: 1; cursor: pointer; white-space: nowrap;
    transition: background-color .15s, border-color .15s, color .15s;
}
.xhf .xhf-btn:hover { border-color: var(--xhf-accent); color: var(--xhf-accent); }
.xhf .xhf-btn-primary, .xhf-btn-primary { background: var(--xhf-accent); border-color: var(--xhf-accent); color: #fff; }
.xhf .xhf-btn-primary:hover { color: #fff; filter: brightness(1.08); }
.xhf-btn-ghost { background: transparent; }
.xhf-btn-lg { height: 42px; padding: 0 20px; font-size: 15px; }
.xhf-btn-sm { height: 30px; padding: 0 10px; font-size: 13px; }
.xhf-btn.is-active { background: var(--xhf-sunken); }
.xhf-btn.is-danger { color: var(--xhf-danger); }
.xhf .xhf-btn.is-danger:hover { border-color: var(--xhf-danger); color: var(--xhf-danger); }
.xhf-btn[disabled], .xhf-btn.is-loading { opacity: .6; pointer-events: none; }

/* ---------- 顶部导航 ---------- */
.xhf-nav {
    display: flex; align-items: center; gap: 16px; padding: 10px 0 16px;
    margin-bottom: 4px;
}
.xhf-nav-home { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; white-space: nowrap; }
.xhf-nav-mark { display: inline-flex; width: 32px; height: 32px; border-radius: 8px; align-items: center; justify-content: center; background: var(--xhf-navy); color: var(--xhf-energized); }
.xhf-nav-logo { height: 32px; width: auto; }
.xhf-nav-search { flex: 1; max-width: 420px; position: relative; display: flex; align-items: center; margin-left: auto; }
.xhf-nav-search svg { position: absolute; left: 12px; color: var(--xhf-muted); pointer-events: none; }
.xhf-nav-search input {
    width: 100%; height: 38px; padding: 0 12px 0 36px; border-radius: 19px;
    border: 1px solid var(--xhf-line); background: var(--xhf-panel); color: var(--xhf-text); font-size: 14px;
}
.xhf-nav-search input:focus { outline: none; border-color: var(--xhf-accent); }
.xhf-nav-actions { display: flex; align-items: center; gap: 8px; }
.xhf-nav-icon { position: relative; display: inline-flex; width: 38px; height: 38px; align-items: center; justify-content: center; border-radius: 50%; color: var(--xhf-text-2); }
.xhf-nav-icon:hover { background: var(--xhf-sunken); }
.xhf-nav-me img { width: 28px; height: 28px; border-radius: 50%; }
.xhf-dot { position: absolute; top: 2px; right: 0; min-width: 18px; height: 18px; padding: 0 5px; border-radius: 9px; background: var(--xhf-danger); color: #fff; font-size: 11px; line-height: 18px; text-align: center; font-weight: 600; }
.xhf-dot.is-inline { position: static; display: inline-block; margin-left: 8px; vertical-align: 3px; }

/* ---------- 首页 hero：母线与读数 ---------- */
.xhf-hero {
    position: relative; overflow: hidden; border-radius: 14px; color: #e9f1fb;
    background:
        linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px) 0 0 / 28px 28px,
        linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px) 0 0 / 28px 28px,
        radial-gradient(120% 140% at 85% 0%, color-mix(in srgb, var(--xhf-accent) 38%, transparent) 0%, transparent 55%),
        var(--xhf-navy);
    padding: 40px 40px 0;
}
.xhf-hero.has-banner { background: linear-gradient(180deg, rgba(8,18,32,.55), rgba(8,18,32,.92)), var(--xhf-banner) center / cover no-repeat, var(--xhf-navy); }
.xhf-hero-text { max-width: 640px; position: relative; }
.xhf .xhf-hero .xhf-hero-title { color: #ffffff !important; font-size: clamp(28px, 4vw, 40px); font-weight: 800; letter-spacing: .02em; }
.xhf .xhf-hero .xhf-hero-sub { margin: 10px 0 0; color: #c9d6e6 !important; font-size: 16px; }
.xhf-hero-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.xhf .xhf-hero .xhf-btn-ghost { color: #eef4fb !important; border-color: rgba(233,241,251,.35); background: rgba(255,255,255,.04); }
.xhf .xhf-hero .xhf-btn-ghost:hover { color: #ffffff !important; border-color: #ffffff; }
.xhf .xhf-hero .xhf-btn-primary { color: #ffffff !important; }

.xhf-bus { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 36px; padding-top: 0; }
.xhf-bus-bar {
    position: absolute; left: 0; right: 0; top: 0; height: 4px; border-radius: 2px;
    background: linear-gradient(90deg, rgba(245,165,36,.25), rgba(245,165,36,.25));
}
.xhf-bus-bar::after {
    content: ""; position: absolute; inset: 0; border-radius: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--xhf-energized) 18%, #ffe2a8 24%, var(--xhf-energized) 30%, transparent 48%) no-repeat;
    background-size: 220% 100%; background-position: 160% 0;
    animation: xhf-energize 1.6s cubic-bezier(.4,0,.2,1) .2s 1 forwards;
}
@keyframes xhf-energize { to { background-position: -60% 0; } }
.xhf-readout { position: relative; padding: 26px 0 26px 20px; display: flex; flex-direction: column; }
.xhf-readout-drop { position: absolute; left: 20px; top: 0; width: 2px; height: 14px; background: rgba(245,165,36,.55); }
.xhf-readout-drop::after { content: ""; position: absolute; left: -4px; top: 12px; width: 10px; height: 6px; border: 2px solid rgba(245,165,36,.75); border-radius: 1px; }
.xhf .xhf-hero .xhf-readout-value { font-size: clamp(22px, 3vw, 30px); font-weight: 700; color: #ffffff !important; font-variant-numeric: tabular-nums; line-height: 1.15; margin-top: 6px; }
.xhf .xhf-hero .xhf-readout-label { color: #a9bbd0 !important; font-size: 13px; }

/* 公告 */
.xhf-announce { display: flex; gap: 10px; align-items: flex-start; margin-top: 16px; padding: 12px 16px; border-radius: var(--xhf-radius); background: color-mix(in srgb, var(--xhf-energized) 12%, var(--xhf-panel)); border: 1px solid color-mix(in srgb, var(--xhf-energized) 35%, transparent); color: var(--xhf-text); }
.xhf-announce svg { color: color-mix(in srgb, var(--xhf-warning) 65%, var(--xhf-text)); margin-top: 3px; flex: none; }
.xhf-announce p { margin: 0; }

/* ---------- 布局 ---------- */
.xhf-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; margin-top: 20px; align-items: start; }
.xhf-primary { min-width: 0; }
.xhf-panel { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); margin-bottom: 20px; }
.xhf-panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--xhf-line-soft); flex-wrap: wrap; }
.xhf-panel-head h2, .xhf-panel-title { font-size: 17px; font-weight: 700; }
.xhf-more { font-size: 14px; color: var(--xhf-accent); }

/* tabs */
.xhf-tabs { display: flex; gap: 4px; flex-wrap: wrap; }
.xhf-tabs a { padding: 5px 12px; border-radius: 16px; font-size: 14px; color: var(--xhf-text-2); }
.xhf-tabs a:hover { background: var(--xhf-sunken); color: var(--xhf-text); }
.xhf-tabs a.is-current { background: var(--xhf-text); color: var(--xhf-panel); font-weight: 600; }
.xhf-mod-filter { display: flex; gap: 2px; font-size: 13px; border: 1px dashed var(--xhf-line); border-radius: 16px; padding: 2px; }
.xhf-mod-filter a { padding: 3px 10px; border-radius: 14px; color: var(--xhf-muted); }
.xhf-mod-filter a.is-current { background: var(--xhf-sunken); color: var(--xhf-text); }

.xhf-chips { display: flex; gap: 6px; flex-wrap: wrap; padding: 12px 18px 0; }
.xhf-chip { display: inline-flex; align-items: center; padding: 3px 12px; border-radius: 14px; border: 1px solid var(--xhf-line); font-size: 13px; color: var(--xhf-text-2); background: var(--xhf-panel); cursor: pointer; }
.xhf-chip.is-current { border-color: var(--xhf-accent); color: var(--xhf-accent); background: color-mix(in srgb, var(--xhf-accent) 8%, var(--xhf-panel)); }
.xhf-chip.is-small { padding: 1px 10px; font-size: 12px; }

/* ---------- 置顶 ---------- */
.xhf-stickies { padding: 6px 0; }
.xhf-sticky-line { display: flex; gap: 10px; align-items: center; padding: 8px 18px; font-size: 14px; }
.xhf-sticky-line svg { color: var(--xhf-danger); }
.xhf-sticky-line span { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-weight: 600; }
.xhf-sticky-line time { color: var(--xhf-muted); font-size: 12px; }

/* ---------- 板块列表 ---------- */
.xhf-group { margin-bottom: 22px; }
.xhf-group-title { font-size: 15px; font-weight: 700; color: var(--xhf-text-2); margin: 0 0 10px 2px; }
.xhf-board-list { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); overflow: hidden; }
.xhf-board-row {
    display: grid; grid-template-columns: 88px minmax(0, 1fr) 120px 220px; gap: 16px; align-items: center;
    padding: 14px 18px; position: relative;
}
.xhf-board-row + .xhf-board-row { border-top: 1px solid var(--xhf-line-soft); }
.xhf .xhf-board-row:hover { background: var(--xhf-surface); color: inherit; }
.xhf-board-row:hover .xhf-board-name { color: var(--xhf-accent); }
.xhf-board-tile { display: inline-flex; align-items: center; justify-content: center; border-radius: 8px; overflow: hidden; color: color-mix(in srgb, var(--board-color) 78%, var(--xhf-text)); background: color-mix(in srgb, var(--board-color) 13%, var(--xhf-panel)); flex: none; }
.xhf-board-tile-md { width: 88px; height: 52px; }
.xhf-board-tile-lg { width: 72px; height: 72px; border-radius: 14px; }
.xhf-board-tile img { width: 100%; height: 100%; object-fit: cover; display: block; }
.xhf-board-info { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.xhf-board-name { font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; transition: color .15s; }
.xhf-board-today { font-size: 12px; font-weight: 600; color: color-mix(in srgb, var(--xhf-energized) 55%, var(--xhf-text)); font-variant-numeric: tabular-nums; }
.xhf-board-desc { font-size: 13px; color: var(--xhf-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.xhf-board-counts { display: flex; gap: 14px; font-size: 12px; color: var(--xhf-muted); }
.xhf-board-counts span { display: flex; flex-direction: column; }
.xhf-board-counts strong { font-size: 16px; color: var(--xhf-text); font-variant-numeric: tabular-nums; }
.xhf-board-last { min-width: 0; display: flex; flex-direction: column; font-size: 13px; }
.xhf-board-last-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--xhf-text-2); }
.xhf-board-last-meta { color: var(--xhf-muted); font-size: 12px; }

/* 短代码板块卡片 */
.xhf-board-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.xhf-board-card { display: flex; gap: 12px; align-items: center; padding: 12px; border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); background: var(--xhf-panel); }
.xhf-board-card .xhf-board-tile-md { width: 64px; height: 44px; }
.xhf-board-card-text { display: flex; flex-direction: column; min-width: 0; }
.xhf-board-card-text small { color: var(--xhf-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ---------- 主题列表 ---------- */
.xhf-topic-row { display: grid; grid-template-columns: 40px minmax(0, 1fr) auto auto; gap: 14px; align-items: center; padding: 14px 18px; }
.xhf-topic-row + .xhf-topic-row { border-top: 1px solid var(--xhf-line-soft); }
.xhf-topic-row.is-sticky { background: color-mix(in srgb, var(--xhf-danger) 4%, var(--xhf-panel)); }
.xhf-topic-avatar img, .xhf-avatar-img { border-radius: 50%; display: block; }
.xhf-topic-avatar img { width: 40px; height: 40px; }
.xhf-topic-body { min-width: 0; }
.xhf-topic-title { font-size: 16px; font-weight: 600; line-height: 1.45; margin: 0; display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; }
.xhf-topic-title a { word-break: break-word; }
.xhf-tag { color: var(--xhf-accent); font-weight: 500; font-size: 14px; }
.xhf-topic-excerpt { margin: 2px 0 0; color: var(--xhf-muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.xhf-topic-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 4px; font-size: 12px; color: var(--xhf-muted); }
.xhf-meta-user { color: var(--xhf-text-2); font-weight: 500; }
.xhf-meta-board { color: var(--xhf-text-2); font-weight: 500; }
.xhf-topic-thumb { position: relative; width: 112px; height: 64px; border-radius: 6px; overflow: hidden; background: var(--xhf-sunken); display: block; }
.xhf-topic-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.xhf-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; color: #fff; background: rgba(0,0,0,.25); }
.xhf-topic-stats { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; min-width: 56px; font-size: 12px; color: var(--xhf-muted); font-variant-numeric: tabular-nums; }
.xhf-topic-stats span { display: inline-flex; align-items: center; gap: 4px; }
.xhf-stat-replies { color: var(--xhf-text-2); font-weight: 600; font-size: 14px; }

/* 状态旗标 */
.xhf-flag { display: inline-flex; align-items: center; gap: 3px; height: 20px; padding: 0 6px; border-radius: 4px; font-size: 12px; font-weight: 600; line-height: 1; white-space: nowrap; background: var(--xhf-sunken); color: var(--xhf-text-2); }
.xhf-flag-sticky { background: color-mix(in srgb, var(--xhf-danger) 12%, transparent); color: color-mix(in srgb, var(--xhf-danger) 80%, var(--xhf-text)); }
.xhf-flag-digest { background: color-mix(in srgb, var(--xhf-energized) 18%, transparent); color: color-mix(in srgb, var(--xhf-energized) 50%, var(--xhf-text)); }
.xhf-flag-announce { background: color-mix(in srgb, var(--xhf-accent) 12%, transparent); color: color-mix(in srgb, var(--xhf-accent) 80%, var(--xhf-text)); }
.xhf-flag-video { background: color-mix(in srgb, #8e4ec6 14%, transparent); color: color-mix(in srgb, #8e4ec6 70%, var(--xhf-text)); }
.xhf-flag-solved { background: color-mix(in srgb, var(--xhf-success) 14%, transparent); color: color-mix(in srgb, var(--xhf-success) 75%, var(--xhf-text)); }
.xhf-flag-open { background: transparent; border: 1px solid var(--xhf-line); color: var(--xhf-muted); font-weight: 500; }
.xhf-flag-pending { background: color-mix(in srgb, var(--xhf-warning) 16%, transparent); color: color-mix(in srgb, var(--xhf-warning) 55%, var(--xhf-text)); }
.xhf-flag-trash, .xhf-flag-locked { background: var(--xhf-sunken); color: var(--xhf-muted); }

/* 分页 */
.xhf-pagination { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; padding: 16px; }
.xhf-page-btn { min-width: 34px; height: 34px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center; border-radius: 6px; border: 1px solid var(--xhf-line); font-size: 14px; background: var(--xhf-panel); }
.xhf-page-btn.is-current { background: var(--xhf-accent); border-color: var(--xhf-accent); color: #fff; font-weight: 600; }
.xhf-page-gap { align-self: center; color: var(--xhf-muted); }

/* 空状态与提示 */
.xhf-empty { padding: 48px 20px; text-align: center; color: var(--xhf-muted); }
.xhf-empty p { margin: 0 0 14px; }
.xhf-notice { padding: 12px 16px; border-radius: var(--xhf-radius-sm); background: color-mix(in srgb, var(--xhf-warning) 12%, var(--xhf-panel)); border: 1px solid color-mix(in srgb, var(--xhf-warning) 30%, transparent); margin-bottom: 16px; }
.xhf-notice.is-error { background: color-mix(in srgb, var(--xhf-danger) 10%, var(--xhf-panel)); border-color: color-mix(in srgb, var(--xhf-danger) 30%, transparent); }
.xhf-hint { color: var(--xhf-muted); font-size: 12px; }

/* ---------- 侧栏 ---------- */
.xhf-sidebar { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 84px; }
.xhf-side { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); padding: 16px; }
.xhf-side h3 { font-size: 14px; font-weight: 700; margin-bottom: 10px; color: var(--xhf-text); }
.xhf-side p { margin: 0 0 12px; font-size: 13px; color: var(--xhf-text-2); }
.xhf-side-me-head { display: flex; gap: 12px; align-items: center; }
.xhf-side-me-head img { width: 44px; height: 44px; border-radius: 50%; }
.xhf-side-me-head span { display: flex; flex-direction: column; min-width: 0; }
.xhf-side-me-head small { color: var(--xhf-muted); font-size: 12px; }
.xhf-side-me-stats { display: grid; grid-template-columns: 1fr 1fr; margin-top: 14px; border-top: 1px solid var(--xhf-line-soft); padding-top: 12px; }
.xhf-side-me-stats > * { display: flex; flex-direction: column; font-size: 12px; color: var(--xhf-muted); }
.xhf-side-me-stats strong { font-size: 18px; color: var(--xhf-text); font-variant-numeric: tabular-nums; }
.xhf-side-warn { margin-top: 12px !important; color: var(--xhf-danger) !important; }
.xhf-side-guest-actions { display: flex; gap: 8px; }
.xhf-side-guest-actions .xhf-btn { flex: 1; }
.xhf-side-links, .xhf-side-list, .xhf-side-hot, .xhf-side-users, .xhf-tips { list-style: none; margin: 0; padding: 0; }
.xhf-side-links { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.xhf-side-links a { display: block; padding: 7px 10px; border-radius: 6px; background: var(--xhf-surface); font-size: 13px; text-align: center; }
.xhf-side-hot { counter-reset: hot; }
.xhf-side-hot li, .xhf-side-list li { display: flex; gap: 8px; align-items: baseline; padding: 6px 0; font-size: 13px; }
.xhf-side-hot li::before { counter-increment: hot; content: counter(hot); flex: none; width: 18px; height: 18px; border-radius: 4px; font-size: 11px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; background: var(--xhf-sunken); color: var(--xhf-muted); }
.xhf-side-hot li:nth-child(-n+3)::before { background: var(--xhf-energized); color: #3b2500; }
.xhf-side-hot a, .xhf-side-list a { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--xhf-text-2); }
.xhf-side-hot span { color: var(--xhf-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.xhf-side-users { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px 6px; }
.xhf-side-users a { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 12px; color: var(--xhf-text-2); min-width: 0; }
.xhf-side-users img { width: 36px; height: 36px; border-radius: 50%; }
.xhf-side-users span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xhf-tips li { position: relative; padding: 4px 0 4px 14px; font-size: 13px; color: var(--xhf-text-2); }
.xhf-tips li::before { content: ""; position: absolute; left: 2px; top: 13px; width: 5px; height: 5px; border-radius: 50%; background: var(--xhf-accent); }

/* ---------- 面包屑 ---------- */
.xhf-breadcrumb { display: flex; gap: 8px; flex-wrap: wrap; font-size: 13px; color: var(--xhf-muted); margin: 0 0 14px; }
.xhf-breadcrumb [aria-current] { color: var(--xhf-text-2); }

/* ---------- 板块页头 ---------- */
.xhf-board-head { position: relative; border-radius: 14px; overflow: hidden; background: color-mix(in srgb, var(--board-color) 10%, var(--xhf-panel)); border: 1px solid color-mix(in srgb, var(--board-color) 25%, var(--xhf-line)); }
.xhf-board-head.has-cover { background: linear-gradient(90deg, rgba(8,16,28,.92) 0%, rgba(8,16,28,.7) 55%, rgba(8,16,28,.35) 100%), var(--board-cover) center / cover no-repeat; border-color: transparent; color: #fff; }
.xhf-board-head-inner { display: flex; gap: 20px; align-items: center; padding: 28px; flex-wrap: wrap; }
.xhf-board-head-text { flex: 1; min-width: 240px; }
.xhf-board-head h1 { font-size: 26px; font-weight: 800; }
.xhf-board-head p { margin: 6px 0 0; color: var(--xhf-text-2); max-width: 680px; }
.xhf .xhf-board-head.has-cover h1 { color: #ffffff !important; }
.xhf .xhf-board-head.has-cover p, .xhf .xhf-board-head.has-cover .xhf-board-head-meta, .xhf .xhf-board-head.has-cover .xhf-board-head-meta a { color: #d3dde9 !important; }
.xhf-board-head.has-cover .xhf-board-tile { background: rgba(255,255,255,.12); color: #fff; }
.xhf-board-head-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; font-size: 13px; color: var(--xhf-muted); }
.xhf-board-head-meta strong { color: inherit; font-size: 15px; font-variant-numeric: tabular-nums; }
.xhf .xhf-board-head.has-cover .xhf-board-head-meta strong { color: #ffffff !important; }
.xhf .xhf-board-head.has-cover .xhf-board-readonly { background: rgba(255,255,255,.12); color: #eef4fb; }
.xhf-board-mods a { text-decoration: underline; text-underline-offset: 3px; }
.xhf-board-readonly { font-size: 13px; padding: 8px 12px; border-radius: 6px; background: rgba(0,0,0,.08); }
.xhf-rules { margin-top: 12px; border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); background: var(--xhf-panel); }
.xhf-rules summary { cursor: pointer; padding: 10px 16px; font-weight: 600; font-size: 14px; display: flex; gap: 8px; align-items: center; }
.xhf-rules > div { padding: 0 16px 12px; color: var(--xhf-text-2); font-size: 14px; }
.xhf-rules > div p { margin: 0 0 6px; }

/* ---------- 主题页 ---------- */
.xhf-topic-head { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); padding: 20px 24px; margin-bottom: 16px; }
.xhf-topic-head-flags { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 10px; }
.xhf-type-pill { display: inline-flex; height: 22px; align-items: center; padding: 0 10px; border-radius: 11px; font-size: 12px; font-weight: 600; background: var(--xhf-text); color: var(--xhf-panel); }
.xhf-topic-h1 { font-size: 24px; font-weight: 800; line-height: 1.4; word-break: break-word; }
.xhf-topic-head-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; font-size: 13px; color: var(--xhf-muted); }
.xhf-topic-head-meta span { display: inline-flex; align-items: center; gap: 4px; }
.xhf-modbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--xhf-line); font-size: 13px; }
.xhf-modbar-label { display: inline-flex; gap: 4px; align-items: center; color: var(--xhf-muted); font-weight: 600; margin-right: 4px; }
.xhf-modbar-select { display: inline-flex; gap: 6px; align-items: center; color: var(--xhf-text-2); }
.xhf-modbar select, .xhf-compose-page select { height: 30px; border: 1px solid var(--xhf-line); border-radius: 6px; background: var(--xhf-panel); color: var(--xhf-text); padding: 0 8px; font-size: 13px; }

/* 帖子 */
.xhf-thread { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); }
.xhf-post { display: grid; grid-template-columns: 140px minmax(0, 1fr); scroll-margin-top: 90px; }
.xhf-post + .xhf-post, .xhf-replies .xhf-post { border-top: 1px solid var(--xhf-line-soft); }
.xhf-post-author { padding: 22px 14px; display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; border-right: 1px solid var(--xhf-line-soft); background: var(--xhf-surface); }
.xhf-post-avatar img { width: 56px; height: 56px; border-radius: 50%; }
.xhf-post-name { font-weight: 600; font-size: 14px; word-break: break-all; }
.xhf-post-badges { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
.xhf-badge { display: inline-flex; align-items: center; height: 20px; padding: 0 7px; border-radius: 4px; font-size: 11px; font-weight: 600; white-space: nowrap; background: var(--xhf-sunken); color: var(--xhf-text-2); }
.xhf-badge-admin { background: var(--xhf-danger); color: #fff; }
.xhf-badge-mod { background: var(--xhf-accent); color: #fff; }
.xhf-badge-op { background: var(--xhf-energized); color: #3b2500; }
.xhf-badge-banned { background: var(--xhf-text); color: var(--xhf-panel); }
.xhf-post-main { min-width: 0; padding: 18px 24px 12px; display: flex; flex-direction: column; }
.xhf-post-head { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--xhf-muted); flex-wrap: wrap; }
.xhf-post-floor { margin-left: auto; font-weight: 600; color: var(--xhf-muted); font-variant-numeric: tabular-nums; }
.xhf-post.is-solved { background: color-mix(in srgb, var(--xhf-success) 5%, var(--xhf-panel)); }
.xhf-post.is-trash .xhf-post-body, .xhf-post.is-pending .xhf-post-body { opacity: .6; }
.xhf-post-body { padding: 10px 0 6px; flex: 1; }
.xhf-post-topic .xhf-post-body { font-size: 16px; min-height: 80px; }
.xhf-quote-ref { display: flex; gap: 8px; align-items: flex-start; margin-top: 10px; padding: 8px 12px; border-radius: 6px; background: var(--xhf-surface); border-left: 3px solid var(--xhf-line); font-size: 13px; color: var(--xhf-muted); }
.xhf-quote-ref svg { margin-top: 3px; }
.xhf-quote-ref strong { color: var(--xhf-text-2); }

.xhf-post-actions { display: flex; flex-wrap: wrap; gap: 2px; align-items: center; margin-top: 8px; margin-left: -8px; }
.xhf-act { display: inline-flex; align-items: center; gap: 5px; height: 32px; padding: 0 8px; border: 0; border-radius: 6px; background: none; color: var(--xhf-muted); font-size: 13px; cursor: pointer; font-family: inherit; }
.xhf-act:hover { background: var(--xhf-sunken); color: var(--xhf-text); }
.xhf-act.is-active { color: var(--xhf-accent); }
.xhf-act-like.is-active svg { fill: currentColor; fill-opacity: .15; }
.xhf-act-solve { color: var(--xhf-success); }
.xhf-count { font-variant-numeric: tabular-nums; }
.xhf-act.is-pop svg { animation: xhf-pop .35s ease; }
@keyframes xhf-pop { 50% { transform: scale(1.3); } }

.xhf-menu { position: relative; margin-left: auto; }
.xhf-menu-list { position: absolute; right: 0; bottom: calc(100% + 4px); z-index: 30; min-width: 150px; padding: 6px; background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: 8px; box-shadow: 0 10px 30px rgba(10,20,40,.14); }
.xhf-menu-list[hidden] { display: none; }
.xhf-menu-list > * { display: flex; width: 100%; gap: 8px; align-items: center; padding: 8px 10px; border: 0; background: none; border-radius: 6px; font-size: 13px; color: var(--xhf-text); cursor: pointer; text-align: left; font-family: inherit; }
.xhf-menu-list > *:hover { background: var(--xhf-sunken); }
.xhf-menu-list .is-danger { color: var(--xhf-danger); }

.xhf-solved-jump { display: flex; gap: 10px; align-items: flex-start; margin: 4px 24px 16px; padding: 12px 14px; border-radius: 8px; background: color-mix(in srgb, var(--xhf-success) 10%, var(--xhf-panel)); border: 1px solid color-mix(in srgb, var(--xhf-success) 30%, transparent); font-size: 14px; }
.xhf-solved-jump svg { color: var(--xhf-success); margin-top: 3px; }
.xhf-replies-head { padding: 14px 24px; border-top: 1px solid var(--xhf-line); background: var(--xhf-surface); }
.xhf-replies-head h2 { font-size: 15px; font-weight: 700; }
.xhf-replies-empty { padding: 28px 24px; color: var(--xhf-muted); text-align: center; margin: 0; }
.xhf-thread .xhf-pagination { border-top: 1px solid var(--xhf-line-soft); }
.xhf-post.is-flash { animation: xhf-flash 1.6s ease; }
@keyframes xhf-flash { 0%, 40% { background: color-mix(in srgb, var(--xhf-energized) 16%, transparent); } 100% { background: transparent; } }

/* 回复框 */
.xhf-composer { margin-top: 16px; background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); padding: 16px 20px; scroll-margin-top: 90px; }
.xhf-composer-head { display: flex; gap: 10px; align-items: center; font-size: 13px; color: var(--xhf-muted); margin-bottom: 10px; }
.xhf-composer-head img { width: 32px; height: 32px; border-radius: 50%; }
.xhf-composer-head strong { color: var(--xhf-text); }
.xhf-composer-foot { display: flex; justify-content: flex-end; align-items: center; gap: 12px; margin-top: 12px; }
.xhf-composer-guest { text-align: center; padding: 20px; }
.xhf-composer-guest p { margin: 0 0 12px; color: var(--xhf-text-2); }
.xhf-reply-to { display: flex; align-items: center; gap: 8px; padding: 8px 12px; margin-bottom: 8px; border-radius: 6px; background: var(--xhf-surface); font-size: 13px; color: var(--xhf-text-2); }
.xhf-reply-to[hidden] { display: none; }
.xhf-reply-to span { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xhf-reply-to button { border: 0; background: none; cursor: pointer; color: var(--xhf-muted); display: inline-flex; padding: 4px; }

/* ---------- 编辑器 ---------- */
.xhf-editor { border: 1px solid var(--xhf-line); border-radius: 8px; background: var(--xhf-panel); position: relative; }
.xhf-editor.is-focus { border-color: var(--xhf-accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--xhf-accent) 15%, transparent); }
.xhf-editor.is-drag { border-style: dashed; border-color: var(--xhf-accent); }
.xhf-editor-toolbar { display: flex; flex-wrap: wrap; gap: 2px; align-items: center; padding: 6px; border-bottom: 1px solid var(--xhf-line-soft); position: sticky; top: 0; background: var(--xhf-panel); border-radius: 8px 8px 0 0; z-index: 2; }
.xhf-editor-toolbar button { display: inline-flex; align-items: center; gap: 4px; height: 32px; min-width: 32px; padding: 0 7px; justify-content: center; border: 0; border-radius: 6px; background: none; color: var(--xhf-text-2); cursor: pointer; font-size: 13px; font-family: inherit; }
.xhf-editor-toolbar button:hover { background: var(--xhf-sunken); color: var(--xhf-text); }
.xhf-editor-toolbar .xhf-tool-video { color: color-mix(in srgb, #8e4ec6 75%, var(--xhf-text)); }
.xhf-toolbar-sep { width: 1px; height: 18px; background: var(--xhf-line); margin: 0 4px; }
.xhf-editor-area { min-height: 280px; max-height: 70vh; overflow-y: auto; padding: 14px 16px; outline: none; font-size: 15px; }
.xhf-editor-compact .xhf-editor-area { min-height: 120px; }
.xhf-editor-area:empty::before { content: attr(data-placeholder); color: var(--xhf-muted); pointer-events: none; }
.xhf-editor-area img { cursor: default; }
.xhf-editor-area .xhf-embed { position: relative; padding: 12px 14px; border: 1px dashed var(--xhf-line); border-radius: 8px; color: var(--xhf-muted); font-size: 13px; margin: 8px 0; user-select: none; }
.xhf-editor-area .xhf-embed::before { content: "视频：" attr(data-embed); word-break: break-all; }
.xhf-uploads:empty { display: none; }
.xhf-uploads { padding: 8px 10px; border-top: 1px solid var(--xhf-line-soft); display: flex; flex-direction: column; gap: 6px; }
.xhf-upload-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 10px; align-items: center; font-size: 12px; color: var(--xhf-text-2); }
.xhf-upload-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.xhf-upload-bar { grid-column: 1 / -1; height: 4px; border-radius: 2px; background: var(--xhf-sunken); overflow: hidden; }
.xhf-upload-bar span { display: block; height: 100%; width: 0; background: var(--xhf-accent); transition: width .2s; }
.xhf-upload-item.is-error { color: var(--xhf-danger); }
.xhf-upload-item.is-error .xhf-upload-bar span { background: var(--xhf-danger); }
.xhf-upload-cancel { border: 0; background: none; color: var(--xhf-muted); cursor: pointer; font-size: 12px; }

/* @ 补全 */
.xhf-mention-pop { position: absolute; z-index: 40; min-width: 200px; max-width: 280px; background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: 8px; box-shadow: 0 10px 30px rgba(10,20,40,.14); padding: 4px; }
.xhf-mention-pop button { display: flex; width: 100%; gap: 8px; align-items: center; padding: 6px 8px; border: 0; background: none; border-radius: 6px; font-size: 13px; cursor: pointer; color: var(--xhf-text); text-align: left; }
.xhf-mention-pop button.is-active, .xhf-mention-pop button:hover { background: var(--xhf-sunken); }
.xhf-mention-pop img { width: 22px; height: 22px; border-radius: 50%; }

/* ---------- 发帖页 ---------- */
.xhf-compose-page { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
.xhf-compose-main { background: var(--xhf-panel); border: 1px solid var(--xhf-line); border-radius: var(--xhf-radius); padding: 24px; }
.xhf-compose-title { font-size: 22px; font-weight: 800; margin-bottom: 18px; }
.xhf-compose-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 84px; }
.xhf-field { margin: 0 0 18px; border: 0; padding: 0; min-width: 0; }
.xhf-field > label, .xhf-field > legend, .xhf-field-label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 8px; padding: 0; }
.xhf-field select { height: 40px; min-width: 260px; max-width: 100%; font-size: 14px; }
.xhf-field-hint { margin: 6px 0 0; font-size: 12px; color: var(--xhf-muted); min-height: 1em; }
.xhf-field .xhf-chips { padding: 0; }
.xhf-segment { display: inline-flex; flex-wrap: wrap; gap: 4px; padding: 3px; border-radius: 8px; background: var(--xhf-sunken); }
.xhf-segment-item input { position: absolute; opacity: 0; pointer-events: none; }
.xhf-segment-item span { display: inline-block; padding: 6px 14px; border-radius: 6px; font-size: 14px; cursor: pointer; color: var(--xhf-text-2); }
.xhf-segment-item input:checked + span { background: var(--xhf-panel); color: var(--xhf-text); font-weight: 600; box-shadow: 0 1px 3px rgba(10,20,40,.12); }
.xhf-segment-item input:focus-visible + span { outline: 2px solid var(--xhf-accent); }
.xhf-input-count { position: relative; }
.xhf-input-count input { width: 100%; height: 46px; padding: 0 70px 0 14px; border-radius: 8px; border: 1px solid var(--xhf-line); background: var(--xhf-panel); color: var(--xhf-text); font-size: 17px; font-weight: 600; }
.xhf-input-count input:focus { outline: none; border-color: var(--xhf-accent); }
.xhf-counter { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font-size: 12px; color: var(--xhf-muted); font-variant-numeric: tabular-nums; }
.xhf-compose-foot { display: flex; gap: 10px; justify-content: flex-end; align-items: center; margin-top: 8px; }
.xhf-compose-foot .xhf-hint { margin-right: auto; }
.xhf-rules-text { font-size: 13px; color: var(--xhf-text-2); white-space: pre-line; }

/* ---------- 正文排版 ---------- */
.xhf-content { word-wrap: break-word; overflow-wrap: anywhere; }
.xhf-content > :first-child { margin-top: 0; }
.xhf-content p { margin: 0 0 .9em; }
.xhf-content h2 { font-size: 1.3em; margin: 1.2em 0 .5em; }
.xhf-content h3 { font-size: 1.15em; margin: 1.1em 0 .5em; }
.xhf-content a { color: var(--xhf-accent); }
.xhf-content a:hover { text-decoration: underline; }
.xhf-content img { display: block; max-width: 100%; height: auto; border-radius: 8px; margin: .6em 0; cursor: zoom-in; }
.xhf-content ul, .xhf-content ol { padding-left: 1.6em; margin: 0 0 .9em; }
.xhf-content blockquote { margin: 0 0 1em; padding: 8px 14px; border-left: 3px solid var(--xhf-accent); background: var(--xhf-surface); border-radius: 0 6px 6px 0; color: var(--xhf-text-2); }
.xhf .xhf-content pre { background: #0f1724; color: #e3eaf3 !important; padding: 14px 16px; border-radius: 8px; overflow-x: auto; font-size: 13px; line-height: 1.6; margin: 0 0 1em; }
.xhf-content code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .9em; background: var(--xhf-sunken); padding: 1px 5px; border-radius: 4px; }
.xhf-content pre code { background: none; padding: 0; color: inherit; }
.xhf-content hr { border: 0; border-top: 1px solid var(--xhf-line); margin: 1.5em 0; }
.xhf-content .xhf-mention { font-weight: 600; }
.xhf-content video, .xhf-video { display: block; width: 100%; max-height: 72vh; border-radius: 10px; background: #000; margin: .6em 0 1em; }
.xhf-video-embed { position: relative; width: 100%; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: #000; margin: .6em 0 1em; }
.xhf-video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.xhf-table-wrap { overflow-x: auto; margin: 0 0 1em; }
.xhf-content table { border-collapse: collapse; min-width: 100%; font-size: 14px; }
.xhf-content th, .xhf-content td { border: 1px solid var(--xhf-line); padding: 6px 10px; text-align: left; }
.xhf-content th { background: var(--xhf-surface); }

/* ---------- 个人主页 ---------- */
.xhf-profile { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; padding: 24px; margin-bottom: 20px; border-radius: 14px; background: var(--xhf-panel); border: 1px solid var(--xhf-line); }
.xhf-profile-avatar img { width: 88px; height: 88px; border-radius: 50%; }
.xhf-profile-text { flex: 1; min-width: 220px; }
.xhf-profile-text h1 { font-size: 24px; font-weight: 800; }
.xhf-profile-text .xhf-post-badges { justify-content: flex-start; margin-top: 6px; }
.xhf-profile-meta { display: flex; flex-wrap: wrap; gap: 16px; margin: 10px 0 0; font-size: 13px; color: var(--xhf-muted); }
.xhf-profile-meta strong { color: var(--xhf-text); font-variant-numeric: tabular-nums; }
.xhf-profile-bio { margin: 8px 0 0; color: var(--xhf-text-2); }
.xhf-profile-actions { display: flex; gap: 8px; }
.xhf-reply-list { list-style: none; margin: 0; padding: 0; }
.xhf-reply-list li + li { border-top: 1px solid var(--xhf-line-soft); }
.xhf-reply-list a { display: flex; flex-direction: column; padding: 12px 18px; }
.xhf-reply-list-meta { font-size: 12px; color: var(--xhf-muted); margin-top: 2px; }
.xhf-result-count { padding: 12px 18px 0; margin: 0; color: var(--xhf-muted); font-size: 13px; }

/* 通知 */
.xhf-note-list { list-style: none; margin: 0; padding: 0; }
.xhf-note { display: flex; gap: 12px; padding: 12px 18px; align-items: flex-start; }
.xhf-note + .xhf-note { border-top: 1px solid var(--xhf-line-soft); }
.xhf-note.is-unread { background: color-mix(in srgb, var(--xhf-accent) 6%, var(--xhf-panel)); }
.xhf-note.is-unread .xhf-note-line::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--xhf-accent); margin-right: 6px; vertical-align: 2px; }
.xhf-note-avatar img { width: 36px; height: 36px; border-radius: 50%; }
.xhf-note-sys { display: inline-flex; width: 36px; height: 36px; border-radius: 50%; align-items: center; justify-content: center; background: var(--xhf-sunken); color: var(--xhf-muted); }
.xhf-note-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.xhf-note-line { font-size: 14px; }
.xhf-note-topic { color: var(--xhf-text-2); }
.xhf-note time { font-size: 12px; color: var(--xhf-muted); }

/* 消息页 */
.xhf-message { padding: 60px 24px; text-align: center; }
.xhf-message h1 { font-size: 22px; }
.xhf-message p { color: var(--xhf-muted); }
.xhf-message-actions { display: flex; gap: 10px; justify-content: center; }

/* ---------- 浮层 ---------- */
.xhf-toast { position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%); z-index: 100000; padding: 10px 18px; border-radius: 8px; background: #142033; color: #fff; font-size: 14px; box-shadow: 0 10px 30px rgba(0,0,0,.25); max-width: calc(100vw - 32px); }
.xhf-toast.is-error { background: var(--xhf-danger); }
.xhf-modal-back { position: fixed; inset: 0; z-index: 99999; background: rgba(8,14,24,.55); display: flex; align-items: center; justify-content: center; padding: 16px; }
.xhf-modal { width: 440px; max-width: 100%; background: var(--xhf-panel, #fff); color: var(--xhf-text, #142033); border-radius: 12px; padding: 22px; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.xhf-modal h3 { font-size: 17px; margin: 0 0 12px; }
.xhf-modal p { margin: 0 0 12px; font-size: 14px; color: var(--xhf-text-2); }
.xhf-modal input, .xhf-modal textarea, .xhf-modal select { width: 100%; padding: 9px 12px; border: 1px solid var(--xhf-line); border-radius: 8px; background: var(--xhf-panel); color: var(--xhf-text); font-size: 14px; font-family: inherit; margin-bottom: 12px; }
.xhf-modal textarea { min-height: 90px; resize: vertical; }
.xhf-modal-actions { display: flex; justify-content: flex-end; gap: 8px; }
.xhf-lightbox { position: fixed; inset: 0; z-index: 99999; background: rgba(0,0,0,.88); display: flex; align-items: center; justify-content: center; cursor: zoom-out; padding: 20px; }
.xhf-lightbox img { max-width: 100%; max-height: 100%; border-radius: 6px; }

.xhf-embed-block { margin: 0 0 24px; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(1px,1px,1px,1px); white-space: nowrap; }

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
    .xhf-board-row { grid-template-columns: 88px minmax(0, 1fr) 120px; }
    .xhf-board-last { display: none; }
}
@media (max-width: 960px) {
    .xhf-layout, .xhf-compose-page { grid-template-columns: 1fr; }
    .xhf-sidebar, .xhf-compose-side { position: static; }
}
@media (max-width: 680px) {
    .xhf-container { padding: 0 12px; }
    .xhf-main { padding-top: 8px; }
    .xhf-nav { flex-wrap: wrap; gap: 10px; }
    .xhf-nav-search { order: 3; max-width: none; flex-basis: 100%; }
    .xhf-nav-actions { margin-left: auto; }
    .xhf-hero { padding: 26px 20px 0; border-radius: 12px; }
    .xhf-bus { margin-top: 28px; }
    .xhf-readout { padding: 22px 0 18px 10px; }
    .xhf-readout-drop { left: 10px; }
    .xhf-readout-value { font-size: 20px; }
    .xhf-readout-label { font-size: 12px; }
    .xhf-board-row { grid-template-columns: 56px minmax(0, 1fr); gap: 12px; padding: 12px 14px; }
    .xhf-board-tile-md { width: 56px; height: 44px; }
    .xhf-board-counts { grid-column: 2; margin-top: -4px; }
    .xhf-board-counts span { flex-direction: row; align-items: baseline; gap: 3px; }
    .xhf-board-counts strong { font-size: 13px; }
    .xhf-topic-row { grid-template-columns: 32px minmax(0, 1fr) auto; gap: 10px; padding: 12px 14px; }
    .xhf-topic-avatar img { width: 32px; height: 32px; }
    .xhf-topic-thumb { display: none; }
    .xhf-topic-excerpt { white-space: normal; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
    .xhf-post { grid-template-columns: 1fr; }
    .xhf-post-author { flex-direction: row; flex-wrap: wrap; align-items: center; text-align: left; padding: 12px 16px 0; border-right: 0; background: none; gap: 8px; }
    .xhf-post-avatar img { width: 36px; height: 36px; }
    .xhf-post-badges { justify-content: flex-start; }
    .xhf-post-main { padding: 6px 16px 10px; }
    .xhf-act-label { display: none; }
    .xhf-topic-head { padding: 16px; }
    .xhf-topic-h1 { font-size: 20px; }
    .xhf-solved-jump { margin: 0 16px 14px; }
    .xhf-replies-head { padding: 12px 16px; }
    .xhf-composer { padding: 14px; }
    .xhf-compose-main { padding: 16px; }
    .xhf-field select { min-width: 0; width: 100%; }
    .xhf-board-head-inner { padding: 20px; }
    .xhf-board-tile-lg { width: 56px; height: 56px; }
    .xhf-editor-toolbar .xhf-tool-media span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
    .xhf-bus-bar::after { animation: none; background: var(--xhf-energized); opacity: .6; }
    .xhf *, .xhf *::before, .xhf *::after { transition: none !important; animation-duration: 0s !important; }
}

/* 板块权限说明 */
.xhf-board-perms { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 8px; font-size: 12px; color: var(--xhf-text-2); }
.xhf-board-perms span { display: inline-flex; gap: 4px; }
.xhf-board-perms b { font-weight: 600; color: var(--xhf-muted); }
.xhf .xhf-board-head.has-cover .xhf-board-perms, .xhf .xhf-board-head.has-cover .xhf-board-perms b { color: #d3dde9 !important; }