/* ==========================================================
   布局层：墨色侧轨 / 顶栏 / 页面骨架 / 通用面板
   ========================================================== */
.app { display: grid; grid-template-columns: var(--rail) 1fr; min-height: 100vh; }

/* ---------- 侧轨 ---------- */
.rail {
  position: sticky; top: 0; height: 100vh; z-index: 30;
  display: flex; flex-direction: column; align-items: center; gap: 4px;
  padding: 16px 0 14px; background: var(--ink); color: #b9b4c0;
}
.rail-logo {
  display: grid; place-items: center; width: 40px; height: 40px; margin-bottom: 18px;
  border-radius: 12px; background: var(--accent); color: #fff;
  font: 700 18px var(--serif); box-shadow: 0 6px 18px -6px rgba(217,72,30,.8);
}
.rail-nav { display: flex; flex-direction: column; gap: 4px; flex: 1; width: 100%; padding: 0 10px; }
.rail-item {
  position: relative; display: grid; justify-items: center; gap: 3px; padding: 8px 0 7px;
  border-radius: var(--r); font-size: 11px; letter-spacing: .04em; transition: background .15s, color .15s;
}
.rail-item .ico { width: 20px; height: 20px; }
.rail-item:hover { background: var(--ink-2); color: #fff; }
.rail-item.active { background: var(--ink-2); color: #fff; }
.rail-item.active::before {
  content: ""; position: absolute; left: -10px; top: 10px; bottom: 10px; width: 3px;
  border-radius: 0 3px 3px 0; background: var(--accent);
}
.rail-badge {
  position: absolute; top: 4px; right: 8px; min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 8px; background: var(--accent); color: #fff; font: 700 10px/16px var(--mono); text-align: center;
}
.rail-sep { width: 28px; height: 1px; margin: 8px auto; background: var(--ink-3); }
.rail-foot { display: grid; justify-items: center; gap: 10px; }
.rail-foot .icon-btn { color: #8d8896; }
.rail-foot .icon-btn:hover { background: var(--ink-2); color: #fff; }
.rail-me { display: grid; place-items: center; padding: 4px; border-radius: 50%; cursor: pointer; }
.rail-me:hover, .rail-me[aria-current="page"] { box-shadow: 0 0 0 2px var(--accent); }
.rail-me .avatar { width: 32px; height: 32px; font-size: 12px; box-shadow: 0 0 0 2px var(--ink-3); }

/* ---------- 主区 ---------- */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 20; height: var(--top);
  display: flex; align-items: center; gap: 16px; padding: 0 28px;
  background: rgba(244,241,234,.86); backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--line);
}
.crumbs { display: flex; align-items: center; gap: 8px; min-width: 0; font-size: 13px; color: var(--text-3); }
.crumbs a:hover { color: var(--text); }
.crumbs .sep { color: var(--line-strong); }
.crumbs strong { color: var(--text); font-weight: 600; }
.topbar-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; position: relative; }
.cmd-trigger {
  display: flex; align-items: center; gap: 10px; width: 300px; height: 34px; padding: 0 10px;
  border: 1px solid var(--line-strong); border-radius: var(--r-sm); background: var(--card);
  color: var(--text-3); font-size: 13px; text-align: left; transition: border-color .15s;
}
.cmd-trigger:hover { border-color: var(--ink); }
.cmd-trigger span { flex: 1; }
kbd {
  display: inline-grid; place-items: center; min-width: 20px; height: 20px; padding: 0 5px;
  border: 1px solid var(--line-strong); border-bottom-width: 2px; border-radius: 4px;
  background: var(--paper); font: 600 10px var(--mono); color: var(--text-2);
}

.page { padding: 28px 28px 64px; max-width: 1480px; width: 100%; margin: 0 auto; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.page-head h1 { font: 700 30px/1.15 var(--serif); letter-spacing: -.01em; }
.page-head p { margin-top: 6px; color: var(--text-3); font-size: 13px; }
.page-head .actions { display: flex; gap: 8px; flex: none; }
.eyebrow { font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .14em; color: var(--accent); margin-bottom: 6px; }

/* ---------- 面板 ---------- */
.panel { background: var(--card); border: 1px solid var(--line); border-radius: var(--r-lg); box-shadow: var(--sh-1); }
.panel-head { display: flex; align-items: center; gap: 10px; padding: 16px 20px 12px; }
.panel-head h2 { font: 700 16px var(--serif); }
.panel-head .count { font: 600 12px var(--mono); color: var(--text-3); }
.panel-head .more { margin-left: auto; font-size: 12px; color: var(--text-3); display: inline-flex; align-items: center; gap: 2px; }
.panel-head .more:hover { color: var(--accent-ink); }
.panel-body { padding: 0 20px 18px; }

/* ---------- 工具条 / 分段 / 筛选片 ---------- */
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .grow { flex: 1; }
.seg { display: inline-flex; padding: 3px; border-radius: 8px; background: var(--paper-2); }
.seg button {
  display: inline-flex; align-items: center; gap: 6px; height: 28px; padding: 0 12px;
  border-radius: 6px; font-size: 13px; color: var(--text-2); font-weight: 500;
}
.seg button:hover { color: var(--text); }
.seg button.on { background: var(--card); color: var(--text); box-shadow: var(--sh-1); font-weight: 600; }
.seg button .num { font-size: 11px; color: var(--text-3); }
.seg.icon button { padding: 0 8px; }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px;
  border-radius: 999px; border: 1px solid var(--line-strong); font-size: 13px; color: var(--text-2);
  transition: all .15s; background: transparent;
}
.chip:hover { border-color: var(--ink); color: var(--text); }
.chip.on { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.chip .num { font-size: 11px; opacity: .6; }

/* ---------- 页内标签 ---------- */
.tabs { display: flex; gap: 22px; border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.tabs button {
  position: relative; display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 0 12px; font-size: 14px; color: var(--text-3); font-weight: 500;
}
.tabs button:hover { color: var(--text); }
.tabs button.on { color: var(--text); font-weight: 700; }
.tabs button.on::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--accent); }
.tabs .num { font-size: 11px; padding: 0 6px; border-radius: 9px; background: var(--paper-2); color: var(--text-2); }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .topbar { padding: 0 16px; }
  .cmd-trigger { width: auto; }
  .cmd-trigger span, .cmd-trigger kbd { display: none; }
  .page { padding: 20px 16px 48px; }
  .page-head { flex-direction: column; align-items: flex-start; }
}