/* 夜叉 · 主样式
   规则：这里只允许引用 token 变量，不写死颜色/圆角/间距 */

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--color-accent); }
img { display: block; }

.wrap { width: 100%; max-width: var(--content-width); margin: 0 auto; padding: 0 20px; }
.muted { color: var(--color-text-muted); }
.small { font-size: var(--text-sm); }

/* ── 头部 ───────────────────────────────── */
.hdr {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in srgb, var(--color-surface) 88%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.hdr-in { display: flex; align-items: center; gap: 20px; height: 56px; }

.logo { display: flex; align-items: baseline; gap: 6px; font-weight: 650; }
.logo-cn { font-size: 19px; letter-spacing: .02em; }
.logo-en { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--color-text-muted); }

.nav { display: flex; gap: 18px; font-size: var(--text-sm); overflow: hidden; }
.nav a { color: var(--color-text-secondary); white-space: nowrap; }
.nav a.on, .nav a:hover { color: var(--color-text); }

.hdr-r { margin-left: auto; display: flex; gap: 8px; }

/* ── 按钮 ───────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 7px 14px; border-radius: var(--radius-sm);
  background: var(--color-accent); color: var(--color-accent-contrast);
  font-size: var(--text-sm); font-weight: 550;
  border: 1px solid var(--color-accent);
  transition: opacity var(--dur-fast) var(--ease);
}
.btn:hover { opacity: .88; color: var(--color-accent-contrast); }
.btn.ghost {
  background: transparent; color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn.ghost:hover { background: var(--color-surface-hover); color: var(--color-text); }
.btn.sm { padding: 5px 10px; font-size: var(--text-xs); }

/* ── 首屏 ───────────────────────────────── */
.main { padding: 28px 20px 64px; }

.hero { padding: 8px 0 28px; }
.hero-tag {
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--color-text-muted); margin-bottom: 12px;
}
.hero h1 {
  margin: 0 0 10px; font-size: var(--text-2xl); line-height: var(--leading-tight);
  letter-spacing: -.01em; font-weight: 650; max-width: 22em;
}
.hero p { margin: 0 0 20px; max-width: 34em; }
.hero-actions { display: flex; gap: 10px; margin-bottom: 18px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 14px; font-size: var(--text-sm); color: var(--color-text-muted); }
.hero-stats b { color: var(--color-text); font-weight: 600; }

/* ── 两栏 ───────────────────────────────── */
.cols { display: grid; grid-template-columns: 1fr var(--sidebar-width); gap: 24px; align-items: start; }
.col-main { min-width: 0; }

/* ── Tab ───────────────────────────────── */
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 8px; }
.tab {
  padding: 6px 12px; border-radius: var(--radius-pill);
  font-size: var(--text-sm); color: var(--color-text-secondary);
}
.tab:hover { background: var(--color-surface-hover); color: var(--color-text); }
.tab.on { background: var(--color-accent); color: var(--color-accent-contrast); }

/* ── 主题列表 ───────────────────────────── */
.topic-list { list-style: none; margin: 0; padding: 0; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); overflow: hidden; }
.topic {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 14px 16px; border-bottom: 1px solid var(--color-border);
}
.topic:last-child { border-bottom: 0; }
.topic:hover { background: var(--color-surface-2); }
.topic-body { flex: 1; min-width: 0; }
.topic-title { font-size: var(--text-base); font-weight: 550; line-height: 1.45; }
.topic-title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.topic-meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 5px; font-size: var(--text-sm); color: var(--color-text-muted); }
.topic-meta a:hover { color: var(--color-text); }
.dot { opacity: .4; }
.topic-count { text-align: right; min-width: 56px; color: var(--color-text-secondary); }
.topic-count b { display: block; font-weight: 600; }

.badge {
  display: inline-block; padding: 1px 6px; margin-right: 6px;
  border-radius: 4px; font-size: 11px; font-weight: 600;
  background: var(--color-accent); color: var(--color-accent-contrast);
  vertical-align: 2px;
}
.tag {
  display: inline-block; padding: 1px 7px; border-radius: var(--radius-pill);
  background: var(--color-surface-hover); color: var(--color-text-muted);
  font-size: var(--text-xs);
}
.tag:hover { color: var(--color-text); }

.av { border-radius: 50%; flex: none; }
.av-xs { width: 24px; height: 24px; }
.av-sm { width: 28px; height: 28px; }
.av-lg { width: 48px; height: 48px; }
.av-xl { width: 72px; height: 72px; }

.empty {
  list-style: none; padding: 40px 16px; text-align: center;
  display: flex; flex-direction: column; gap: 6px;
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
}

/* ── 分页 ───────────────────────────────── */
.pager { display: flex; gap: 6px; justify-content: center; margin-top: 20px; font-size: var(--text-sm); }
.pager a, .pager .cur {
  min-width: 32px; height: 32px; padding: 0 8px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-sm); border: 1px solid var(--color-border);
  background: var(--color-surface); color: var(--color-text-secondary);
}
.pager .cur { background: var(--color-accent); color: var(--color-accent-contrast); border-color: var(--color-accent); }
.pager a:hover { background: var(--color-surface-hover); color: var(--color-text); }

/* ── 侧栏 ───────────────────────────────── */
.col-side { display: flex; flex-direction: column; gap: 16px; position: sticky; top: 76px; }
.card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 16px;
}
.card-title { margin: 0 0 12px; font-size: var(--text-sm); font-weight: 600; color: var(--color-text-secondary); }
.guest { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: center; }
.guest-actions { grid-column: 1 / -1; display: flex; gap: 8px; }
.guest-actions .btn { flex: 1; }

.mini-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: var(--text-sm); }
.mini-list li { display: flex; align-items: center; gap: 8px; }
.mini-list .rank { width: 16px; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.mini-list a { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.stat-line { display: flex; gap: 14px; flex-wrap: wrap; font-size: var(--text-sm); color: var(--color-text-muted); }
.stat-line b { color: var(--color-text); font-weight: 600; }
.latest { margin-top: 14px; }
.latest-row { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }

/* ── 面包屑 / 页头 ──────────────────────── */
.crumbs { display: flex; gap: 8px; align-items: center; font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: 18px; }
.crumbs a:hover { color: var(--color-text); }
.page-head { margin-bottom: 16px; }
.page-head h1 { margin: 0 0 4px; font-size: var(--text-xl); font-weight: 650; letter-spacing: -.01em; }
.page-head p { margin: 0; }

/* ── 帖子 ───────────────────────────────── */
.post {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: 22px 24px; margin-bottom: 20px;
}
.post-head { display: flex; gap: 12px; align-items: center; margin-bottom: 16px; }
.post-author { font-weight: 600; font-size: var(--text-sm); }
.post-title { margin: 0 0 12px; font-size: var(--text-xl); line-height: var(--leading-tight); font-weight: 650; letter-spacing: -.01em; }
.post-tags { display: flex; gap: 6px; margin-bottom: 16px; flex-wrap: wrap; }
.post-body, .reply-text {
  font-size: var(--text-base); line-height: var(--leading-relaxed);
  white-space: pre-wrap; word-break: break-word;
}
.notice { margin: 16px 0 0; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--color-surface-hover); color: var(--color-text-secondary); font-size: var(--text-sm); }

.replies { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 20px 24px; }
.reply-list { list-style: none; margin: 0; padding: 0; }
.reply { display: flex; gap: 12px; padding: 16px 0; border-top: 1px solid var(--color-border); }
.reply-head { display: flex; gap: 10px; align-items: baseline; margin-bottom: 4px; font-size: var(--text-sm); font-weight: 600; }
.reply-body { flex: 1; min-width: 0; }
.reply-box { display: flex; gap: 12px; align-items: center; padding-top: 18px; border-top: 1px solid var(--color-border); }

/* ── 用户页 ─────────────────────────────── */
.profile { display: flex; gap: 20px; align-items: flex-start; padding: 8px 0 28px; }
.profile h1 { margin: 0 0 4px; font-size: var(--text-2xl); font-weight: 650; letter-spacing: -.01em; }
.profile-bio { margin: 10px 0 0; white-space: pre-wrap; }
.profile-stats { display: flex; gap: 16px; margin-top: 12px; font-size: var(--text-sm); color: var(--color-text-muted); }
.profile-stats b { color: var(--color-text); font-weight: 600; }
.section { margin-bottom: 24px; }

/* ── 错误页 ─────────────────────────────── */
.err { text-align: center; padding: 80px 20px; }
.err-code { font-size: 56px; font-weight: 700; letter-spacing: -.04em; color: var(--color-border-strong); }
.err h1 { margin: 8px 0; font-size: var(--text-xl); }
.err p { margin: 0 0 20px; }

/* ── 页脚 ───────────────────────────────── */
.ftr { border-top: 1px solid var(--color-border); padding: 28px 0 40px; font-size: var(--text-sm); color: var(--color-text-muted); }
.ftr-in { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.ftr-in b { color: var(--color-text); display: block; }
.ftr-nav { display: flex; gap: 14px; flex-wrap: wrap; }
.ftr-nav a:hover { color: var(--color-text); }

/* ── 响应式 ─────────────────────────────── */
@media (max-width: 980px) {
  .cols { grid-template-columns: 1fr; }
  .col-side { position: static; }
  .nav { display: none; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: var(--text-xl); }
  .topic-count { display: none; }
  .post, .replies { padding: 16px; }
}

/* ────────────────────────────────────────────────
   三栏布局（参考 jiudeng-community，色系用我们自己的）
   ──────────────────────────────────────────────── */

.hdr-in { max-width: 1440px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; gap: 16px; height: 56px; }

.search { flex: 0 1 320px; }
.search input {
  width: 100%; height: 34px; padding: 0 12px;
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text);
  font-size: var(--text-sm); font-family: inherit; outline: none;
}
.search input:focus { border-color: var(--color-border-strong); }
.search input::placeholder { color: var(--color-text-muted); }

.hdr-user { display: flex; align-items: center; gap: 6px; font-size: var(--text-sm); }
.inline { display: inline; margin: 0; }

.layout {
  max-width: 1440px; margin: 0 auto; padding: 20px;
  display: grid; grid-template-columns: 200px minmax(0, 1fr) 320px; gap: 24px;
  align-items: start;
}

/* 左侧导航 */
.side-l { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 2px; font-size: var(--text-sm); }
.side-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 10px; border-radius: var(--radius-sm); color: var(--color-text-secondary);
}
.side-item:hover { background: var(--color-surface-hover); color: var(--color-text); }
.side-item.on { background: var(--color-surface); color: var(--color-text); font-weight: 550; box-shadow: var(--shadow-card); }
.side-item .ico { opacity: .45; font-size: 12px; width: 14px; }
.side-group { margin: 16px 0 6px; padding: 0 10px; font-size: 11px; letter-spacing: .1em; color: var(--color-text-muted); text-transform: uppercase; }
.side-tags { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 10px; }

/* 右栏卡片 */
.side-r { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 14px; }
.welcome { display: flex; align-items: center; gap: 10px; }
.welcome-actions { display: flex; gap: 8px; margin-top: 12px; }
.welcome-actions .btn { flex: 1; }

.rank-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; font-size: var(--text-sm); }
.rank-list li { display: flex; align-items: center; gap: 8px; min-width: 0; }
.rank-list .rank { width: 16px; text-align: center; color: var(--color-text-muted); font-variant-numeric: tabular-nums; font-size: var(--text-xs); }
.rank-list .rank.top { color: var(--color-text); font-weight: 700; }
.rank-list a { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.newcomer-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: var(--text-sm); }
.newcomer-list li { display: flex; align-items: center; gap: 8px; }

/* 主区 */
.tagline { margin: 0 0 18px; color: var(--color-text-muted); font-size: var(--text-sm); }
.feed { margin-bottom: 26px; }
.feed-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.feed-head h2 { margin: 0; font-size: var(--text-base); font-weight: 650; display: flex; align-items: center; gap: 6px; }
.feed-head .flame, .feed-head .dot-ico { font-size: 14px; }
.feed-head .more { font-size: var(--text-sm); color: var(--color-text-muted); }
.feed-head .more:hover { color: var(--color-text); }
.topic-list { background: transparent; border: 0; border-radius: 0; overflow: visible; }
.topic {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); margin-bottom: 8px; padding: 12px 14px;
}
.topic:last-child { border-bottom: 1px solid var(--color-border); }

/* ── 关于页 ─────────────────────────────── */
.about { max-width: 860px; margin: 0 auto; padding: 40px 20px 80px; }
.about-hero { padding: 40px 0 48px; }
.about-badge { font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 14px; }
.about-hero h1 { margin: 0 0 14px; font-size: 40px; line-height: 1.15; letter-spacing: -.02em; font-weight: 650; }
.about-sub { margin: 0 0 24px; color: var(--color-text-secondary); font-size: var(--text-lg); max-width: 30em; }
.about-cta { display: flex; gap: 10px; }

.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 56px; }
.about-stats > div { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 16px; }
.about-stats b { display: block; font-size: 22px; font-weight: 650; letter-spacing: -.01em; }
.about-stats span { color: var(--color-text-muted); font-size: var(--text-xs); }
.about-stats.live b { font-size: 26px; }

.about-block { margin-bottom: 56px; }
.about-block h2 { margin: 0 0 6px; font-size: var(--text-xl); font-weight: 650; letter-spacing: -.01em; }
.about-block > p { margin: 0 0 20px; }

.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 20px; }
.feature { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px; }
.feature h3 { margin: 0 0 6px; font-size: var(--text-base); font-weight: 600; }
.feature p { margin: 0; color: var(--color-text-secondary); font-size: var(--text-sm); line-height: 1.7; }

.stack-table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.stack-table th { text-align: left; font-weight: 500; color: var(--color-text-muted); padding: 10px 0; width: 120px; }
.stack-table td { padding: 10px 0; border-bottom: 1px solid var(--color-border); }
.stack-table tr:last-child td { border-bottom: 0; }

.roadmap { list-style: none; margin: 20px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.roadmap li { display: flex; gap: 14px; align-items: baseline; padding: 12px 16px; border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); font-size: var(--text-sm); }
.roadmap b { font-variant-numeric: tabular-nums; color: var(--color-text-muted); width: 32px; }
.roadmap li.done { border-color: var(--color-text); }
.roadmap li.done b { color: var(--color-text); }
.roadmap li.doing { background: var(--color-surface-hover); }

.about-end { text-align: center; padding: 48px 0 0; border-top: 1px solid var(--color-border); }
.about-end h2 { margin: 0 0 8px; font-size: var(--text-xl); }
.about-end p { margin: 0 0 20px; }

@media (max-width: 1200px) {
  .layout { grid-template-columns: 180px minmax(0, 1fr); }
  .side-r { display: none; }
}
@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; padding: 12px; }
  .side-l { position: static; flex-direction: row; overflow-x: auto; gap: 4px; padding-bottom: 8px; }
  .side-group, .side-tags { display: none; }
  .search { display: none; }
  .about-stats { grid-template-columns: repeat(2, 1fr); }
  .feature-grid { grid-template-columns: 1fr; }
  .about-hero h1 { font-size: 30px; }
}
/* ── 标签广场 / 榜单 / 搜索 ─────────────── */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; }
.tag.big {
  padding: 8px 14px; border-radius: var(--radius-pill); font-size: var(--text-sm);
  background: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text);
}
.tag.big:hover { border-color: var(--color-border-strong); }

.board-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.board-list li {
  display: flex; align-items: center; gap: 12px;
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 10px 14px; font-size: var(--text-sm);
}
.board-list .rank { width: 20px; text-align: center; color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.board-list .rank.top { color: var(--color-text); font-weight: 700; }
.board-name { flex: 1; }
.board-value { color: var(--color-text-secondary); font-variant-numeric: tabular-nums; }

.search-page { display: flex; gap: 10px; margin-bottom: 20px; }
.search-page input {
  flex: 1; height: 40px; padding: 0 14px; font-size: var(--text-base);
  border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-surface); color: var(--color-text); font-family: inherit; outline: none;
}
.search-page input:focus { border-color: var(--color-border-strong); }