:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2329;
  --text-2: #646a73;
  --line: #e5e6eb;
  --primary: #3370ff;
  --primary-soft: #e1eaff;
  --green: #34a853;
  --red: #f54a45;
  --amber: #ff8800;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(31, 35, 41, .06), 0 4px 16px rgba(31, 35, 41, .05);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg); color: var(--text); font-size: 15px; line-height: 1.6;
}

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50; display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between; gap: 10px;
  padding: 12px 20px; background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; }
.logo { font-size: 26px; }
.brand-name { font-weight: 700; font-size: 17px; }
.brand-sub { font-size: 12px; color: var(--text-2); }
.tabs { display: flex; gap: 4px; background: var(--bg); padding: 4px; border-radius: 10px; }
.tab {
  border: none; background: transparent; padding: 8px 16px; border-radius: 8px;
  font-size: 14px; color: var(--text-2); cursor: pointer; font-weight: 500;
}
.tab.active { background: var(--card); color: var(--primary); box-shadow: var(--shadow); font-weight: 600; }

main { max-width: 980px; margin: 0 auto; padding: 20px 16px 80px; }
.panel { display: none; }
.panel.active { display: block; animation: fadeIn .25s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px);} to { opacity: 1; transform: none;} }

/* ---------- 通用 ---------- */
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin-bottom: 16px; }
.card-title { font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 10px; }
.hint { font-size: 12px; color: var(--text-2); font-weight: 400; }
.hint-block { font-size: 13px; color: var(--text-2); background: #f8f9fa; border-radius: 8px; padding: 10px 12px; margin-top: 10px; }
code { background: #f0f2f5; border-radius: 4px; padding: 1px 6px; font-size: 13px; font-family: Consolas, monospace; }

.btn {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  padding: 8px 16px; border-radius: 8px; font-size: 14px; cursor: pointer;
  text-decoration: none; display: inline-flex; align-items: center; gap: 6px; font-weight: 500;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: #295fe0; }
.btn.ghost { border-color: transparent; color: var(--text-2); }
.btn.big { padding: 11px 28px; font-size: 15px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

input[type=text], input[type=password], input:not([type]), select {
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: 14px;
  background: #fff; color: var(--text); width: 100%; max-width: 420px; outline: none;
}
input:focus, select:focus { border-color: var(--primary); }

/* ---------- 拖拽区 ---------- */
.dropzone {
  border: 2px dashed #c9cdd4; border-radius: 16px; background: var(--card);
  padding: 46px 20px; text-align: center; transition: all .2s; margin-bottom: 16px;
}
.dropzone.over { border-color: var(--primary); background: var(--primary-soft); transform: scale(1.01); }
.dz-icon { font-size: 40px; }
.dz-title { font-size: 18px; font-weight: 600; margin: 10px 0 4px; }
.dz-sub { font-size: 13px; color: var(--text-2); margin-bottom: 18px; }
.dz-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ---------- 选项 ---------- */
.opt-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.opt-row label { font-weight: 500; min-width: 76px; }
.opt-row.inline { gap: 8px; }
.opt-row input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--primary); }

/* ---------- 文件表 ---------- */
.table-wrap { overflow-x: auto; }
table.files { width: 100%; border-collapse: collapse; font-size: 13.5px; }
table.files th { text-align: left; color: var(--text-2); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.files td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: middle; }
table.files tr:last-child td { border-bottom: none; }
.fname { max-width: 300px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: block; }
.status { padding: 2px 10px; border-radius: 99px; font-size: 12px; white-space: nowrap; }
.st-wait { background: #f0f2f5; color: var(--text-2); }
.st-run { background: var(--primary-soft); color: var(--primary); }
.st-ok { background: #e6f4ea; color: var(--green); }
.st-err { background: #fdecea; color: var(--red); }

/* ---------- 日志 ---------- */
.progress { height: 8px; background: #f0f2f5; border-radius: 99px; overflow: hidden; margin-bottom: 12px; }
.progress-bar { height: 100%; width: 0; background: linear-gradient(90deg, #3370ff, #6aa1ff); border-radius: 99px; transition: width .4s; }
.console {
  background: #1f2329; color: #d6d9de; border-radius: 10px; padding: 14px;
  font-family: Consolas, "Courier New", monospace; font-size: 12.5px; line-height: 1.7;
  max-height: 320px; overflow-y: auto; white-space: pre-wrap; word-break: break-all;
}
.console .lv-error { color: #ff7269; }
.console .lv-warn { color: #ffb84d; }

/* ---------- 技能库 ---------- */
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 16px; gap: 10px; flex-wrap: wrap; }
.sec-title { font-size: 18px; font-weight: 700; }
.sec-sub { font-size: 13px; color: var(--text-2); margin-top: 2px; }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.skill-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 16px; cursor: pointer; transition: transform .15s; border: 1px solid transparent;
}
.skill-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.skill-card .t { font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.skill-card .m { font-size: 12.5px; color: var(--text-2); display: flex; gap: 10px; flex-wrap: wrap; }
.badge { font-size: 11px; padding: 1px 8px; border-radius: 99px; background: var(--primary-soft); color: var(--primary); }
.badge.struct { background: #fff3e0; color: var(--amber); }
.empty { text-align: center; color: var(--text-2); padding: 50px 0; }

/* ---------- 问答 ---------- */
.chat-box { display: flex; flex-direction: column; height: calc(100vh - 260px); min-height: 420px; padding: 0; }
.chat-messages { flex: 1; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 85%; padding: 10px 14px; border-radius: 12px; font-size: 14px; word-break: break-word; }
.msg.user { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; white-space: pre-wrap; }
.msg.bot { align-self: flex-start; background: #f0f2f5; border-bottom-left-radius: 4px; }
.msg.bot p { margin: 4px 0; }
.msg.bot ul { margin: 4px 0 4px 20px; }
.msg.bot h3, .msg.bot h4 { margin: 8px 0 4px; }
.msg.bot pre { background: #1f2329; color: #d6d9de; padding: 10px 12px; border-radius: 8px; overflow-x: auto; font-size: 12.5px; margin: 6px 0; }
.msg.bot code { background: #e4e6eb; }
.msg.bot pre code { background: none; color: inherit; }
.msg.bot strong { color: var(--primary); }
.msg .srcs { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.msg .src { font-size: 11.5px; background: #fff; border: 1px solid var(--line); border-radius: 99px; padding: 2px 10px; color: var(--text-2); }
.chat-input-row { display: flex; gap: 10px; padding: 12px; border-top: 1px solid var(--line); }
.chat-input-row input { flex: 1; max-width: none; }

/* ---------- 设置 ---------- */
.lan-urls { display: flex; flex-direction: column; gap: 6px; font-family: Consolas, monospace; font-size: 14px; }
.lan-urls .u { background: #f8f9fa; border-radius: 8px; padding: 8px 12px; }
.qr-wrap { margin-top: 12px; }
.qr-wrap img { border-radius: 8px; width: 160px; height: 160px; }

/* ---------- 弹窗 ---------- */
.modal { position: fixed; inset: 0; background: rgba(15, 18, 25, .5); z-index: 100; display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-box { background: var(--card); border-radius: 14px; width: min(860px, 100%); max-height: 88vh; display: flex; flex-direction: column; overflow: hidden; }
.modal-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 14px 18px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.modal-title { font-weight: 700; }
.modal-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.modal-actions select { max-width: 220px; }
.modal-body { padding: 20px 22px; overflow-y: auto; font-size: 14px; }
.md-body h1 { font-size: 22px; margin: 18px 0 10px; padding-bottom: 8px; border-bottom: 1px solid var(--line); }
.md-body h2 { font-size: 18px; margin: 20px 0 8px; color: var(--primary); }
.md-body h3 { font-size: 16px; margin: 16px 0 6px; }
.md-body p { margin: 8px 0; }
.md-body ul, .md-body ol { margin: 8px 0 8px 22px; }
.md-body li { margin: 3px 0; }
.md-body code { background: #f0f2f5; }
.md-body pre { background: #1f2329; color: #d6d9de; padding: 12px 14px; border-radius: 8px; overflow-x: auto; font-size: 13px; margin: 10px 0; }
.md-body pre code { background: none; color: inherit; }
.md-body table { border-collapse: collapse; margin: 10px 0; font-size: 13px; width: 100%; }
.md-body th, .md-body td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.md-body th { background: #f8f9fa; }
.md-body blockquote { border-left: 3px solid var(--primary); padding-left: 12px; color: var(--text-2); margin: 10px 0; }
.md-body a { color: var(--primary); }

.toast {
  position: fixed; left: 50%; bottom: 32px; transform: translateX(-50%);
  background: #1f2329; color: #fff; padding: 10px 20px; border-radius: 99px;
  font-size: 14px; z-index: 200; box-shadow: 0 6px 24px rgba(0,0,0,.25);
}

/* ---------- 手机适配 ---------- */
@media (max-width: 640px) {
  .topbar { padding: 10px 12px; }
  .brand-sub { display: none; }
  .tabs { width: 100%; overflow-x: auto; }
  .tab { flex: 1; padding: 8px 6px; font-size: 13px; white-space: nowrap; }
  main { padding: 14px 10px 60px; }
  .dropzone { padding: 32px 12px; }
  .fname { max-width: 150px; }
  .chat-box { height: calc(100vh - 220px); }
  .msg { max-width: 95%; }
}