/* ============================================================
   FDE 论坛样式。叠在静态站的 site.css（base.css + extra.css）之上，
   颜色、圆角、阴影一律用那边的变量，两边看起来是同一个站。
   类名统一 fm- 前缀，不和静态站撞名。
   ============================================================ */

.nav-links a.on { background: #eef2ff; color: var(--blue); font-weight: 700; }

/* ---------- 页头 ---------- */
.fm-head {
  background: linear-gradient(135deg, #0e1f4d 0%, #16307a 55%, #2b5cff 100%);
  color: #fff; padding: 44px 0 40px; position: relative; overflow: hidden;
}
.fm-head::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(520px 260px at 88% 10%, rgba(255,255,255,.14), transparent 62%),
              radial-gradient(420px 300px at 8% 100%, rgba(255,176,32,.14), transparent 60%);
}
.fm-head .wrap { position: relative; }
.fm-head.slim { padding: 30px 0 28px; }
.fm-head h1 { font-size: clamp(22px, 3.4vw, 34px); font-weight: 900; line-height: 1.3; letter-spacing: .5px; }
.fm-head.slim h1 { font-size: clamp(20px, 2.8vw, 28px); }
.fm-kicker {
  display: inline-block; font-size: 12.5px; letter-spacing: 2px; margin-bottom: 14px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  padding: 4px 13px; border-radius: 99px;
}
.fm-sub { margin-top: 10px; color: #cdd9ff; font-size: 15px; max-width: 760px; }
.fm-crumb { font-size: 12.5px; color: #9fb3ff; margin-bottom: 8px; }
.fm-crumb a { color: #cdd9ff; text-decoration: none; }
.fm-crumb a:hover { text-decoration: underline; }
.fm-stats { margin-top: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.fm-stats span {
  font-size: 12.5px; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  padding: 4px 12px; border-radius: 99px; color: #dfe7ff;
}
.fm-actions { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.fm-actions form { display: inline; }
.fm-hint-light { font-size: 13px; color: #cdd9ff; }

/* ---------- 按钮 ---------- */
.fm-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font: inherit; font-size: 14px; font-weight: 700; line-height: 1.2;
  padding: 9px 18px; border-radius: 10px; border: 1px solid transparent;
  cursor: pointer; text-decoration: none; transition: .2s;
}
.fm-btn.primary { background: var(--blue); color: #fff; }
.fm-btn.primary:hover { background: var(--blue-deep); }
.fm-btn.light { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.3); }
.fm-btn.light:hover { background: rgba(255,255,255,.24); }
.fm-card .fm-btn.light, .fm-main .fm-btn.light { background: #fff; color: var(--blue-deep); border-color: var(--line); }

/* ---------- 版面 ---------- */
.fm-main { padding: 28px 0 60px; }
.fm-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
@media (max-width: 900px) { .fm-layout { grid-template-columns: 1fr; } }
.fm-narrow { max-width: 860px; }
.fm-narrow.sm { max-width: 520px; }
.fm-side { display: grid; gap: 14px; position: sticky; top: 76px; }
@media (max-width: 900px) { .fm-side { position: static; } }
.fm-side-acts { display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.fm-side-list { margin: 0 0 8px 18px; font-size: 13px; color: var(--ink-2); }
.fm-side-list li { margin-bottom: 3px; }
.side-card a { color: var(--blue); text-decoration: none; }
.side-card a:hover { text-decoration: underline; }

.fm-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px 22px; margin-bottom: 18px;
}
.fm-h2 {
  font-size: 16px; color: var(--blue-dark); font-weight: 900; margin-bottom: 12px;
  display: flex; align-items: center; gap: 9px;
}
.fm-h2::before { content: ""; width: 9px; height: 9px; border-radius: 2px; background: var(--amber); flex: none; }
.fm-muted { color: var(--ink-3); font-size: 13px; }
.fm-muted a, .fm-join-hint a, .fm-flash a { color: var(--blue); }
.fm-center { text-align: center; }
.fm-msg-title { font-size: 22px; color: var(--blue-dark); margin-bottom: 10px; }
.fm-center .fm-btn { margin-top: 18px; }
.fm-layout > div > .fm-flash { margin-bottom: 18px; }

.fm-flash {
  margin-bottom: 16px; background: var(--green-soft); border: 1px solid #bfe9d5; color: #0b6b43;
  border-radius: 12px; padding: 12px 16px; font-size: 14px;
}

/* 导航上的新回复数 */
.fm-dot {
  display: inline-block; min-width: 18px; height: 18px; line-height: 18px; padding: 0 5px; margin-left: 5px;
  border-radius: 99px; background: var(--red); color: #fff; font-size: 11px; font-weight: 800;
  text-align: center; vertical-align: 1px;
}

/* 头像：昵称首字 */
.fm-av {
  width: 30px; height: 30px; border-radius: 50%; flex: none; margin-right: 2px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--blue), #7aa0ff);
}
.fm-av.partner { background: linear-gradient(135deg, #e08a00, var(--amber)); }
.fm-av.off { background: linear-gradient(135deg, var(--blue-dark), var(--blue-deep)); }
.fm-badge.op { background: #eef0f4; color: var(--ink-2); }

/* 编辑框 + 预览 */
.fm-ed-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 10px; margin: 14px 0 6px; }
.fm-form .fm-ed-head label { margin: 0; }
/* 回复框里编辑器是第一个可见元素（前面只有隐藏的 csrf），不要再留上边距 */
#reply .fm-ed-head { margin-top: 0; }
.fm-ed-tab {
  font: inherit; font-size: 12.5px; font-weight: 700; color: var(--blue); background: #eef2ff;
  border: 1px solid transparent; border-radius: 8px; padding: 3px 12px; cursor: pointer;
}
.fm-ed-tab:hover { border-color: var(--blue); }
.fm-preview {
  min-height: 120px; border: 1px dashed var(--line); border-radius: 10px; padding: 12px 14px; background: #fbfcff;
}
.fm-preview .fm-warn { font-size: 13px; color: #8a5a00; background: var(--amber-soft); border-radius: 8px; padding: 7px 11px; margin-bottom: 10px; }
.fm-draft-note { font-size: 12px; color: var(--ink-3); margin-top: 4px; }

/* 用赋能系统账号登录 */
.fm-sso { text-align: center; }
.fm-sso-btn { width: 100%; padding: 12px 18px; font-size: 15px; }
.fm-sso .fm-muted { margin-top: 10px; }
.fm-or { display: flex; align-items: center; gap: 12px; margin: 4px 0 18px; color: var(--ink-3); font-size: 12.5px; }
.fm-or::before, .fm-or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.fm-idcard {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; padding: 12px 14px; margin-bottom: 10px;
  border: 1px solid var(--line); border-radius: 12px; background: #fbfcff;
}
.fm-idcard b { font-size: 16px; }
.fm-idcard .fm-badge { margin-left: 0; }
.fm-light-link { color: #ffd57a; font-weight: 700; }

/* 已解决 / 采纳的回答 */
.fm-flag.solved { background: var(--green-soft); color: #0b6b43; }
.fm-accepted-tag { font-size: 12.5px; font-weight: 800; color: #0b6b43; margin-bottom: 6px; }
a.fm-accepted {
  display: block; margin: -4px 0 14px; padding: 12px 16px; border-radius: 12px; text-decoration: none;
  background: var(--green-soft); border: 1px solid #bfe9d5; color: var(--ink-2); font-size: 14px;
}
a.fm-accepted b { color: #0b6b43; }
a.fm-accepted:hover { border-color: #0fa968; }

/* 回复我的 */
.fm-replies { list-style: none; }
.fm-replies li { border-bottom: 1px solid var(--line); }
.fm-replies li:last-child { border-bottom: none; }
.fm-replies a { display: block; padding: 10px 2px; text-decoration: none; color: inherit; }
.fm-replies a:hover .fm-rmeta b { color: var(--blue); }
.fm-rmeta { display: block; font-size: 13px; color: var(--ink-3); }
.fm-rmeta b { color: var(--ink); }
.fm-rtext { display: block; font-size: 14px; color: var(--ink-2); margin-top: 2px; }
.fm-replies li.new { background: #fffaf0; }
.fm-err {
  background: #fdecec; border: 1px solid #f5c2c3; color: #a1262a;
  border-radius: 10px; padding: 11px 14px; font-size: 14px; margin-bottom: 14px;
}

/* ---------- 公告条、板块 ---------- */
.fm-notices { display: grid; gap: 8px; padding: 14px 18px; }
.fm-notices a { color: var(--ink); text-decoration: none; font-weight: 700; font-size: 14.5px; }
.fm-notices a:hover { color: var(--blue); }
.fm-boards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.fm-board {
  display: block; text-decoration: none; color: inherit; padding: 14px 16px;
  border: 1px solid var(--line); border-radius: 12px; transition: .2s; background: #fbfcff;
}
.fm-board:hover { border-color: var(--blue); transform: translateY(-2px); }
.fm-board .nm { font-weight: 900; color: var(--blue-dark); font-size: 15.5px; }
.fm-board p { font-size: 12.5px; color: var(--ink-2); margin-top: 4px; line-height: 1.6; }
.fm-board .ct { font-size: 12px; color: var(--ink-3); margin-top: 8px; }

/* ---------- 主题列表 ---------- */
.fm-topics { list-style: none; }
.fm-trow {
  display: grid; grid-template-columns: minmax(0, 1fr) 64px 110px; gap: 12px; align-items: center;
  padding: 12px 2px; border-bottom: 1px solid var(--line);
}
.fm-trow:last-child { border-bottom: none; }
.fm-ttl { color: var(--ink); font-weight: 700; font-size: 15px; text-decoration: none; line-height: 1.5; }
.fm-ttl:hover { color: var(--blue); }
.fm-tmeta { font-size: 12.5px; color: var(--ink-3); margin-top: 3px; }
.fm-tmeta a { color: var(--ink-2); text-decoration: none; }
.fm-tmeta a:hover { color: var(--blue); }
.fm-tstat { text-align: center; }
.fm-tstat b { display: block; font-size: 17px; color: var(--blue-deep); line-height: 1.2; }
.fm-tstat span, .fm-tlast span { font-size: 11px; color: var(--ink-3); display: block; }
.fm-tlast { font-size: 12.5px; color: var(--ink-2); text-align: right; }
.fm-empty { padding: 26px 4px; color: var(--ink-3); font-size: 14px; text-align: center; }
@media (max-width: 640px) {
  .fm-trow { grid-template-columns: minmax(0, 1fr) 48px; }
  .fm-tlast { display: none; }
}

.fm-flag {
  display: inline-block; font-size: 11px; font-weight: 800; padding: 1px 7px; border-radius: 6px;
  margin-right: 6px; vertical-align: 2px; letter-spacing: .5px;
}
.fm-head .fm-flag { vertical-align: 5px; }
.fm-flag.pin { background: var(--amber-soft); color: #8a5a00; }
.fm-flag.feat { background: var(--green-soft); color: #0b6b43; }
.fm-flag.lock { background: #eef0f4; color: var(--ink-2); }
.fm-flag.held { background: #fdecec; color: #a1262a; }

.fm-author { font-weight: 700; color: var(--ink); text-decoration: none; }
a.fm-author:hover { color: var(--blue); }
.fm-badge {
  display: inline-block; font-size: 11px; font-weight: 700; padding: 1px 8px; border-radius: 99px;
  margin-left: 6px; vertical-align: 1px; white-space: nowrap;
}
.fm-badge.fde { background: #e8efff; color: var(--blue-deep); }
.fm-badge.partner { background: var(--amber-soft); color: #8a5a00; }
.fm-badge.off { background: var(--blue-deep); color: #fff; }
.fm-head .fm-badge { font-size: 12px; vertical-align: 6px; }
.fm-head .fm-badge.fde { background: rgba(255,255,255,.18); color: #fff; }

/* ---------- 帖子 ---------- */
.fm-post {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px 22px 12px; margin-bottom: 14px; scroll-margin-top: 80px;
}
.fm-post.is-first { border-top: 3px solid var(--blue); }
.fm-post.is-held { border-color: #f5c2c3; background: #fffafa; }
.fm-post:target { box-shadow: 0 0 0 3px rgba(43,92,255,.25), var(--shadow); }
.fm-phead { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 8px; margin-bottom: 10px; font-size: 14px; }
.fm-ptime { font-size: 12.5px; color: var(--ink-3); }
.fm-pno { margin-left: auto; font-size: 12px; color: var(--ink-3); text-decoration: none; }
.fm-heldnote { font-size: 13px; color: #a1262a; background: #fdecec; border-radius: 8px; padding: 7px 11px; margin-bottom: 10px; }
.fm-pacts { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; margin-top: 10px; font-size: 12.5px; }
.fm-pacts a, .fm-pacts button, .fm-report summary {
  color: var(--ink-3); background: none; border: none; font: inherit; font-size: 12.5px;
  cursor: pointer; text-decoration: none; padding: 0;
}
.fm-pacts a:hover, .fm-pacts button:hover, .fm-report summary:hover { color: var(--blue); }
.fm-pacts form { display: inline; }
.fm-report summary { list-style: none; }
.fm-report summary::-webkit-details-marker { display: none; }
.fm-report form { display: flex; gap: 8px; margin-top: 8px; }
.fm-report input { font: inherit; font-size: 13px; padding: 5px 9px; border: 1px solid var(--line); border-radius: 8px; min-width: 220px; }
.fm-report button { color: #a1262a; font-weight: 700; }

/* 正文：Markdown 子集的样式 */
.fm-md { font-size: 15px; color: var(--ink); line-height: 1.85; word-wrap: break-word; overflow-wrap: anywhere; }
.fm-md > * + * { margin-top: .75em; }
.fm-md h3 { font-size: 17px; color: var(--blue-dark); margin-top: 1.1em; }
.fm-md h4 { font-size: 15.5px; color: var(--blue-dark); margin-top: 1em; }
.fm-md ul, .fm-md ol { padding-left: 1.5em; }
.fm-md li + li { margin-top: .25em; }
.fm-md blockquote {
  border-left: 3px solid var(--amber); background: #f7f9ff; color: var(--ink-2);
  padding: 8px 14px; border-radius: 0 8px 8px 0; font-size: 14px;
}
.fm-md code { font-family: "SF Mono", Consolas, "Cascadia Code", monospace; font-size: .88em; background: #eef2ff; color: var(--blue-deep); padding: 1px 5px; border-radius: 5px; }
.fm-md pre { background: #0e1f4d; color: #dfe7ff; padding: 12px 14px; border-radius: 10px; overflow-x: auto; }
.fm-md pre code { background: none; color: inherit; padding: 0; font-size: 13px; }
.fm-md a { color: var(--blue); }
.fm-rules h3:first-child { margin-top: 0; }

/* ---------- 表单 ---------- */
.fm-form label { display: block; font-size: 13.5px; font-weight: 700; color: var(--ink-2); margin: 14px 0 6px; }
.fm-form label:first-of-type { margin-top: 0; }
.fm-form label .fm-muted { font-weight: 400; font-size: 12px; }
.fm-form input:not([type=checkbox]), .fm-form select, .fm-form textarea {
  width: 100%; font: inherit; font-size: 14.5px; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink);
}
.fm-form textarea { resize: vertical; line-height: 1.7; }
.fm-form input:focus, .fm-form select:focus, .fm-form textarea:focus {
  outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(43,92,255,.12);
}
.fm-form label.fm-check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; margin-top: 16px; }
.fm-form label.fm-check input { margin-top: 5px; }
.fm-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 0 14px; }
.fm-2col label { margin-top: 14px; }
@media (max-width: 560px) { .fm-2col { grid-template-columns: 1fr; } }
.fm-tip { font-size: 12px; color: var(--ink-3); margin-top: 6px; }
.fm-tip code { font-size: 11.5px; background: #f1f4fb; padding: 0 4px; border-radius: 4px; }
.fm-form-foot { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 16px; }
.fm-join-hint { display: flex; flex-direction: column; gap: 4px; font-size: 14px; }
.fm-state { font-size: 14.5px; font-weight: 700; margin-bottom: 6px; }
.fm-state.ok { color: #0b6b43; }
.fm-state.warn { color: #8a5a00; }

.fm-search { display: flex; gap: 10px; margin-top: 16px; max-width: 620px; }
.fm-search input {
  flex: 1; min-width: 0; font: inherit; font-size: 15px; padding: 10px 14px;
  border: 1px solid rgba(255,255,255,.35); border-radius: 10px;
}

/* ---------- 翻页 ---------- */
.fm-pager { display: flex; justify-content: space-between; align-items: center; padding: 14px 4px 4px; }
.fm-pager a { color: var(--blue); text-decoration: none; font-weight: 700; font-size: 14px; }

@media (max-width: 560px) {
  .fm-card, .fm-post { padding: 16px 16px 12px; }
  .fm-head { padding: 32px 0 30px; }
}