/* 论坛风格：紧凑、表格化、蓝绿色系 */
:root {
  --brand: #2f7d95;
  --brand-dark: #256274;
  --bg: #eef2f4;
  --fg: #29343b;
  --muted: #7b8891;
  --line: #d6dee3;
}
body.bbs { background: #eef2f4; font-size: 14px; }
.bbs-inner { max-width: 1000px; margin: 0 auto; padding: 0 16px; }
.bbs-head { background: linear-gradient(180deg, #3a8ba4 0%, #2f7d95 100%); border-bottom: 3px solid #22697e; }
.bbs-head-inner { display: flex; align-items: center; gap: 24px; height: 56px; }
.bbs-logo { color: #fff; font-size: 19px; font-weight: 700; letter-spacing: .5px; }
.bbs-logo:hover { text-decoration: none; }
.bbs-nav { display: flex; gap: 18px; flex: 1; }
.bbs-nav a, .bbs-user a { color: #d7eef5; font-size: 13px; }
.bbs-nav a:hover, .bbs-user a:hover { color: #fff; text-decoration: none; }
.bbs-user { display: flex; gap: 14px; }
.bbs-crumb { padding: 12px 16px; font-size: 12px; color: var(--muted); }
.bbs-crumb a { color: var(--muted); }
.bbs-board { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); }
.bbs-board th { background: #f4f7f9; text-align: left; font-size: 12px; font-weight: 600; color: var(--muted);
  padding: 9px 12px; border-bottom: 1px solid var(--line); }
.bbs-board td { padding: 12px; border-bottom: 1px solid #eef2f4; vertical-align: top; font-size: 13px; color: #55636c; }
.bbs-board tr:last-child td { border-bottom: 0; }
.bbs-name a { font-size: 15px; font-weight: 600; color: var(--brand); }
.bbs-name p { margin: 3px 0 0; font-size: 12px; color: var(--muted); }
.bbs-board td span { color: var(--muted); font-size: 12px; }
.bbs-stats { margin: 14px 0 28px; font-size: 12px; color: var(--muted); }
.bbs-title { font-size: 22px; margin: 6px 0 6px; color: #1f2a30; }
.bbs-meta { font-size: 12px; color: var(--muted); padding-bottom: 14px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.bbs-floor { display: flex; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: 3px; padding: 14px; margin-bottom: 12px; }
.bbs-poster { flex: 0 0 84px; text-align: center; font-size: 11px; color: var(--muted); }
.bbs-avatar { width: 46px; height: 46px; margin: 0 auto 6px; border-radius: 4px; background: #d9e7ec;
  color: var(--brand); display: grid; place-items: center; font-size: 18px; font-weight: 700; }
.bbs-post { flex: 1; min-width: 0; }
.bbs-post-head { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); border-bottom: 1px dashed var(--line); padding-bottom: 6px; margin-bottom: 8px; }
.bbs-post-head strong { color: var(--brand); font-size: 13px; }
.bbs-post-body p { margin: 0 0 10px; line-height: 1.8; color: #37424a; }
.bbs-post-body code { background: #f2f5f7; border: 1px solid #e1e8ec; border-radius: 3px; padding: 1px 5px; font-size: 13px; }
.bbs-post-sign { margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 12px; color: var(--muted); }
.bbs-reply { background: #fff; border: 1px solid var(--line); border-radius: 3px; padding: 16px; margin-top: 18px; }
.bbs-reply h2 { font-size: 15px; margin: 0 0 12px; }
.bbs-btn { width: auto; padding: 8px 22px; border-radius: 3px; }
.bbs-foot { margin-top: 26px; padding: 16px 0; background: #fff; border-top: 1px solid var(--line);
  font-size: 12px; color: var(--muted); text-align: center; }

/* 登录 */
body.bbs-login-body { background: #eef2f4; }
.bbs-login { width: 100%; max-width: 360px; margin: 9vh auto; }
.bbs-login-brand { text-align: center; font-size: 22px; font-weight: 700; color: var(--brand); margin-bottom: 16px; letter-spacing: 1px; }
.bbs-login-box { background: #fff; border: 1px solid var(--line); border-radius: 4px; padding: 20px 22px; }
.bbs-login-tabs { display: flex; gap: 16px; border-bottom: 1px solid var(--line); margin: -4px 0 18px; }
.bbs-login-tabs span { padding-bottom: 9px; font-size: 14px; color: var(--muted); }
.bbs-login-tabs .is-on { color: var(--brand); border-bottom: 2px solid var(--brand); font-weight: 600; }
.bbs-login label { font-size: 13px; color: #45525a; }
.bbs-login input[type="text"], .bbs-login input[type="password"] { border-radius: 3px; padding: 8px 10px; }
.bbs-captcha { display: flex; gap: 10px; align-items: center; }
.bbs-captcha svg { border: 1px solid var(--line); border-radius: 3px; flex: 0 0 auto; }
.bbs-captcha input { text-transform: uppercase; letter-spacing: 2px; }
.bbs-remember { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--muted); }
.bbs-remember label { display: flex; align-items: center; gap: 5px; font-size: 12px; margin: 0; }
.bbs-login-foot { margin-top: 16px; font-size: 12px; color: var(--muted); text-align: center; }