:root {
  --bg: #0f1422;
  --bg-soft: #161d31;
  --card: #1b2236;
  --card-2: #222b45;
  --line: #2c3656;
  --text: #e8ecf6;
  --muted: #9aa6c4;
  --brand: #5b8cff;
  --brand-2: #7aa2ff;
  --good: #38d39f;
  --bad: #ff6b6b;
  --warn: #ffc857;
  --gold: #ffd76a;
  --radius: 14px;
  --shadow: 0 8px 30px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: radial-gradient(1200px 600px at 80% -10%, #1c2748 0%, var(--bg) 55%);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 14px 28px;
  background: rgba(20, 26, 44, .85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo { font-size: 28px; }
.brand-title { font-weight: 700; font-size: 18px; letter-spacing: .5px; }
.brand-sub { font-size: 12px; color: var(--muted); }
.topnav { display: flex; gap: 6px; margin-left: 8px; }
.topnav a {
  color: var(--muted); text-decoration: none; padding: 8px 14px;
  border-radius: 10px; font-size: 14px; transition: .15s;
}
.topnav a:hover { color: var(--text); background: var(--bg-soft); }
.topnav a.active { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-2)); }
.user-chip {
  margin-left: auto; background: var(--card); border: 1px solid var(--line);
  padding: 8px 14px; border-radius: 999px; font-size: 14px; cursor: pointer;
}
.user-chip:hover { border-color: var(--brand); }

/* ---------- layout ---------- */
.app { flex: 1; width: 100%; max-width: 1080px; margin: 0 auto; padding: 28px 24px 60px; }
.loading { color: var(--muted); padding: 60px; text-align: center; }
.footer {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 16px 28px; border-top: 1px solid var(--line);
  color: var(--muted); font-size: 12px;
}
.muted { color: var(--muted); }

/* ---------- generic ---------- */
.page-title { font-size: 22px; font-weight: 700; margin: 0 0 4px; }
.page-sub { color: var(--muted); margin: 0 0 22px; font-size: 14px; }
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card-2); color: var(--text);
  padding: 10px 18px; border-radius: 10px; font-size: 14px; transition: .15s;
}
.btn:hover { border-color: var(--brand); }
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-2)); border: none; color: #fff; font-weight: 600; }
.btn-primary:hover { filter: brightness(1.07); }
.btn-ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--muted); }
.pill.good { color: var(--good); border-color: rgba(56,211,159,.4); }
.pill.bad { color: var(--bad); border-color: rgba(255,107,107,.4); }
.pill.warn { color: var(--warn); border-color: rgba(255,200,87,.4); }
.pill.redline { color: #ff8e8e; border-color: rgba(255,107,107,.5); background: rgba(255,107,107,.08); }

/* ---------- home ---------- */
.hero { margin-bottom: 24px; }
.hero h1 { margin: 0 0 6px; font-size: 26px; }
.module-card { position: relative; display: flex; flex-direction: column; gap: 10px; min-height: 150px; }
.module-card .mc-no { font-size: 13px; color: var(--brand-2); font-weight: 700; }
.module-card h3 { margin: 0; font-size: 17px; }
.module-card p { margin: 0; color: var(--muted); font-size: 13px; flex: 1; }
.module-card.locked { opacity: .6; }
.module-card .lock-tag { position: absolute; top: 16px; right: 16px; }
.progress-radar { display: flex; flex-direction: column; gap: 14px; }
.bar { background: var(--bg-soft); border-radius: 999px; height: 10px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--good)); border-radius: 999px; }
.bar-row { display: grid; grid-template-columns: 92px 1fr 52px; gap: 12px; align-items: center; font-size: 13px; }

/* home: 四关并排（游戏关卡感） */
.section-title { font-size: 18px; margin: 4px 0 14px; }
.levels-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: stretch; margin-bottom: 26px; }
.level-card { flex: 1 1 200px; display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: inherit; min-height: 212px; transition: .15s; }
.level-card:hover { border-color: var(--brand); transform: translateY(-3px); }
.level-card.cleared { border-color: rgba(56, 211, 159, .45); }
.level-head { display: flex; align-items: center; gap: 8px; }
.level-no { font-size: 20px; font-weight: 800; color: var(--brand-2); }
.level-stage { font-size: 12px; color: var(--muted); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: 2px 9px; }
.level-head .pill { margin-left: auto; }
.level-card h3 { margin: 2px 0 0; font-size: 16px; }
.level-card p { margin: 0; color: var(--muted); font-size: 12.5px; line-height: 1.65; flex: 1; }
.level-bar { height: 6px; }
.level-cta { color: var(--brand-2); font-size: 13px; font-weight: 600; }
.level-arrow { flex: 0 0 auto; align-self: center; color: var(--muted); font-size: 16px; }
.home-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lb-cta { display: flex; flex-direction: column; }
@media (max-width: 1000px) { .level-arrow { display: none; } .level-card { flex-basis: 44%; } }
@media (max-width: 820px) { .home-bottom { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .level-card { flex-basis: 100%; } }

/* ---------- module1 tabs ---------- */
.tabs { display: flex; gap: 6px; margin-bottom: 20px; border-bottom: 1px solid var(--line); }
.tabs a { padding: 10px 16px; color: var(--muted); text-decoration: none; font-size: 14px; border-bottom: 2px solid transparent; }
.tabs a.active { color: #fff; border-bottom-color: var(--brand); }

/* knowledge cards */
.kc { cursor: pointer; }
.kc h4 { margin: 0 0 6px; font-size: 16px; }
.kc .summary { color: var(--muted); font-size: 13px; margin-bottom: 10px; }
.kc ul { margin: 8px 0 0; padding-left: 18px; font-size: 13.5px; line-height: 1.7; }
.kc .cat { font-size: 12px; color: var(--brand-2); }
.kc-materials { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 8px 0; }
.mat-link {
  display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 600; text-decoration: none;
  color: var(--brand-2); border: 1px solid transparent; border-radius: 8px; padding: 5px 11px; transition: .12s;
}
/* 文档=蓝、视频=金，做成醒目按钮，演示时一眼可见 */
.mat-link.mat-doc { color: #cdddff; background: rgba(91, 140, 255, .16); border-color: rgba(91, 140, 255, .55); }
.mat-link.mat-doc:hover { background: rgba(91, 140, 255, .30); border-color: var(--brand); color: #fff; }
.mat-link.mat-video { color: #ffe0a3; background: rgba(255, 200, 87, .16); border-color: rgba(255, 200, 87, .6); }
.mat-link.mat-video:hover { background: rgba(255, 200, 87, .30); border-color: var(--warn); color: #fff; }
.materials-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0 0 18px; }
.mat-label {
  font-size: 12px; font-weight: 700; color: var(--text);
  background: var(--bg-soft); border: 1px solid var(--line); border-radius: 6px; padding: 3px 9px;
}

/* question */
.q-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; font-size: 12px; }
.q-stem { font-size: 17px; line-height: 1.6; margin: 6px 0 18px; }
.options { display: flex; flex-direction: column; gap: 10px; }
.option {
  display: flex; gap: 12px; align-items: flex-start; padding: 13px 16px;
  border: 1px solid var(--line); border-radius: 12px; cursor: pointer; transition: .12s;
  background: var(--card-2);
}
.option:hover { border-color: var(--brand); }
.option.selected { border-color: var(--brand); background: rgba(91,140,255,.12); }
.option.correct { border-color: var(--good); background: rgba(56,211,159,.14); }
.option.wrong { border-color: var(--bad); background: rgba(255,107,107,.12); }
.option .key { font-weight: 700; color: var(--brand-2); min-width: 18px; }
.option.disabled { cursor: default; }
.explain {
  margin-top: 16px; padding: 14px 16px; border-radius: 12px;
  background: var(--bg-soft); border: 1px solid var(--line); font-size: 14px; line-height: 1.65;
}
.explain .lead { font-weight: 700; margin-right: 6px; }
.explain.ok .lead { color: var(--good); }
.explain.no .lead { color: var(--bad); }

/* exam */
.exam-head { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; }
.timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 18px; }
.timer.danger { color: var(--bad); }
.q-progress { color: var(--muted); font-size: 13px; }
.score-big { font-size: 48px; font-weight: 800; line-height: 1; }
.score-big.pass { color: var(--good); }
.score-big.fail { color: var(--bad); }

/* leaderboard */
.lb-tabs { display: flex; gap: 8px; margin: 0 0 18px; flex-wrap: wrap; }
.lb-tabs button { background: var(--card); border: 1px solid var(--line); color: var(--muted); padding: 8px 16px; border-radius: 999px; cursor: pointer; font-size: 13px; }
.lb-tabs button.active { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-2)); border: none; }
.lb-subtabs { display: flex; gap: 6px; flex-wrap: wrap; margin: 0 0 16px; border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.lb-subtabs button { background: var(--card); border: 1px solid var(--line); color: var(--muted); padding: 7px 14px; border-radius: 999px; cursor: pointer; font-size: 13px; }
.lb-subtabs button:hover { color: var(--text); border-color: var(--brand); }
.lb-subtabs button.active { color: #fff; background: var(--card-2); border-color: var(--brand); }
table.lb { width: 100%; border-collapse: collapse; }
table.lb th, table.lb td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
table.lb th { color: var(--muted); font-weight: 600; font-size: 12px; }
table.lb tr.me { background: rgba(91,140,255,.1); }
.rank { font-weight: 800; width: 40px; }
.rank.r1 { color: var(--gold); }
.rank.r2 { color: #cfd6e6; }
.rank.r3 { color: #e0a978; }
.badge { font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--warn); margin-left: 4px; }
.delta-up { color: var(--good); }
.delta-zero { color: var(--muted); }
.note-box { font-size: 13px; color: var(--muted); background: var(--bg-soft); border: 1px dashed var(--line); border-radius: 12px; padding: 12px 16px; margin-bottom: 18px; }

/* module2: dialog fragment + node chain */
.dialog {
  background: var(--bg-soft); border: 1px solid var(--line); border-left: 3px solid var(--brand);
  border-radius: 10px; padding: 13px 16px; margin: 6px 0 16px; font-size: 14px; line-height: 1.7; color: #dbe2f4;
}
.nodechain { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; line-height: 2.1; }
.nodechip {
  display: inline-block; padding: 5px 10px; border-radius: 8px; font-size: 12.5px;
  background: var(--card-2); border: 1px solid var(--line); white-space: nowrap; cursor: default;
}
.nodechip b { color: var(--brand-2); }
.nodechip.death { background: rgba(255,107,107,.1); border-color: rgba(255,107,107,.5); }
.nodechip.death b { color: #ff8e8e; }
.nodechip.clickable { cursor: pointer; text-decoration: none; color: inherit; transition: .12s; }
.nodechip.clickable:hover { border-color: var(--brand); background: var(--card-2); transform: translateY(-1px); }
.nodechip.death.clickable:hover { border-color: #ff8e8e; }

/* 流程入口卡（学生发起 / 家长发起 左右并排） */
.flow-entry { display: flex; flex-direction: column; text-decoration: none; color: inherit; min-height: 188px; transition: .15s; }
.flow-entry:hover { border-color: var(--brand); transform: translateY(-3px); }
.flow-entry-tag { display: inline-block; align-self: flex-start; font-size: 13px; font-weight: 700; padding: 4px 12px; border-radius: 999px; }
.flow-entry-tag.blue { color: #cdddff; background: rgba(91,140,255,.16); border: 1px solid rgba(91,140,255,.5); }
.flow-entry-tag.purple { color: #e3ccff; background: rgba(176,122,255,.16); border: 1px solid rgba(176,122,255,.5); }
.flow-entry-cta { color: var(--brand-2); font-weight: 600; font-size: 14px; }

/* 流程页：顶部 sticky 节点条 + 选中态 */
.flow-strip { position: sticky; top: 60px; z-index: 9; background: var(--bg-soft); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin-bottom: 18px; box-shadow: 0 6px 18px rgba(0,0,0,.25); }
.flow-chip.active { border-color: var(--brand); background: rgba(91,140,255,.22); }
.flow-chip.active b, .flow-chip.active { color: #fff; }
.flow-chip.death.active { border-color: #ff8e8e; background: rgba(255,107,107,.25); }
.flow-chip.death.active b { color: #ffd0d0; }
.arrow { color: var(--muted); font-size: 12px; }

/* 节点详情页 */
.node-title { font-size: 20px; font-weight: 800; color: var(--brand-2); }
.node-title.death { color: #ff8e8e; }
.detail-block h4 { margin: 0 0 10px; font-size: 15px; }
.detail-block ul { margin: 0; padding-left: 18px; line-height: 1.8; font-size: 13.5px; }
.detail-block li { margin-bottom: 4px; }
.detail-how { border-top: 3px solid var(--brand); }
.detail-how h4 { color: var(--brand-2); }
.detail-good { border-top: 3px solid var(--good); }
.detail-good h4 { color: var(--good); }
.detail-risk { border-top: 3px solid var(--bad); }
.detail-risk h4 { color: var(--bad); }
.detail-advance { border-top: 3px solid var(--gold); }
.detail-advance h4 { color: var(--gold); }

/* module3: Q&A challenge */
.dialog.customer { border-left-color: var(--warn); }
.answer-box {
  width: 100%; box-sizing: border-box; background: var(--bg-soft); color: var(--text);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; font-size: 14px;
  font-family: inherit; line-height: 1.6; resize: vertical;
}
.answer-box:focus { outline: none; border-color: var(--brand); }
.answer-box:disabled { opacity: .8; }
.score-panel { margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line); }
.champion {
  background: rgba(255,215,106,.08); border: 1px solid rgba(255,215,106,.35);
  border-radius: 10px; padding: 12px 16px; font-size: 14px; line-height: 1.7; color: #f0e6c8;
}
.champion-h { color: var(--gold); font-weight: 700; font-size: 13px; margin-bottom: 6px; }
.my-ans { background: var(--card-2); border: 1px solid var(--line); border-radius: 10px; padding: 11px 14px; font-size: 14px; line-height: 1.7; }
.chip {
  background: var(--card); border: 1px solid var(--line); color: var(--muted);
  padding: 5px 12px; border-radius: 999px; cursor: pointer; font-size: 12.5px;
}
.chip.active { color: #fff; background: linear-gradient(135deg, var(--brand), var(--brand-2)); border: none; }

/* module3: 轨道 × 对谁说 标签 + 2×2 矩阵 */
.pill.track-p { color: #cdddff; background: rgba(91,140,255,.16); border-color: rgba(91,140,255,.5); }
.pill.track-pp { color: #e3ccff; background: rgba(176,122,255,.16); border-color: rgba(176,122,255,.5); }
.pill.aud-student { color: #bfe9d7; background: rgba(56,211,159,.14); border-color: rgba(56,211,159,.45); }
.pill.aud-parent { color: #ffd9a8; background: rgba(255,160,80,.16); border-color: rgba(255,160,80,.5); }
.matrix-cell.cell-p { border-top: 3px solid var(--brand); }
.matrix-cell.cell-pp { border-top: 3px solid #b07aff; }
.cell-focus { font-size: 12.5px; color: var(--good); background: rgba(56,211,159,.1); border: 1px solid rgba(56,211,159,.3); border-radius: 8px; padding: 7px 10px; line-height: 1.55; }
.matrix-cell.clickable { cursor: pointer; text-decoration: none; color: inherit; transition: .15s; }
.matrix-cell.clickable:hover { transform: translateY(-3px); box-shadow: 0 10px 26px rgba(0,0,0,.35); }
.cell-enter { margin-top: 10px; color: var(--brand-2); font-size: 13px; font-weight: 600; }

/* module3 练：流程 × 对谁说 下拉筛选 + 问题列表 */
.filter-bar { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin: -4px 0 16px; }
.filter-bar label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }
.filter-bar select {
  background: var(--card-2); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 12px; font-size: 13.5px; font-family: inherit; cursor: pointer; min-width: 130px;
}
.filter-bar select:focus { outline: none; border-color: var(--brand); }
.filter-bar select:hover { border-color: var(--brand); }
.q-list-item { cursor: pointer; transition: .12s; margin-bottom: 12px; }
.q-list-item:hover { border-color: var(--brand); transform: translateY(-2px); }
.btn-sm { padding: 5px 12px; font-size: 13px; }

/* module4: deal-closing chat */
.chat-wrap { padding: 0; overflow: hidden; }
.chat-log { max-height: 440px; min-height: 280px; overflow-y: auto; padding: 18px; display: flex; flex-direction: column; gap: 10px; }
.bubble { max-width: 82%; padding: 10px 14px; border-radius: 12px; font-size: 14px; line-height: 1.6; }
.bubble-who { font-size: 11px; color: var(--muted); margin-bottom: 3px; }
.bubble.them { align-self: flex-start; background: var(--card-2); border: 1px solid var(--line); border-bottom-left-radius: 3px; }
.bubble.me { align-self: flex-end; background: linear-gradient(135deg, #2b4a8f, #34508f); border-bottom-right-radius: 3px; }
.bubble.me .bubble-who { text-align: right; }
.sys-line { align-self: center; font-size: 12px; color: var(--muted); background: var(--bg-soft); border: 1px dashed var(--line); border-radius: 999px; padding: 3px 12px; }
.win-banner { margin: 0 18px 16px; padding: 12px; text-align: center; background: rgba(56,211,159,.12); border: 1px solid rgba(56,211,159,.5); border-radius: 10px; color: var(--good); font-weight: 600; }
.node-check { display: flex; flex-wrap: wrap; gap: 6px; }
.nodepill { font-size: 12px; padding: 4px 9px; border-radius: 8px; background: var(--bg-soft); border: 1px solid var(--line); color: var(--muted); }
.nodepill.on { background: rgba(56,211,159,.14); border-color: rgba(56,211,159,.5); color: var(--good); }
.persona-card:hover { border-color: var(--brand); }
@media (max-width: 820px) { .app .grid[style*="300px"] { grid-template-columns: 1fr !important; } }

/* me：我的训练 个人区 */
.me-hero { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.me-total { text-align: center; min-width: 120px; }
.me-total-num { font-size: 46px; font-weight: 800; line-height: 1; color: var(--brand-2); }
.me-stats { display: flex; flex-wrap: wrap; gap: 8px; flex: 1; }
.me-mods { display: flex; flex-direction: column; gap: 8px; }
.me-mod { display: block; text-decoration: none; color: inherit; background: var(--card-2); border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; transition: .12s; }
.me-mod:hover { border-color: var(--brand); }
.me-mod-no { font-weight: 800; color: var(--brand-2); margin-right: 6px; }
.badge-big { font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 999px; color: var(--gold); background: rgba(255,215,106,.1); border: 1px solid rgba(255,215,106,.4); }
.rec-item { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); margin-bottom: 8px; }
.rec-no { font-weight: 800; color: var(--brand-2); }
.rec-label { font-size: 14px; }
.rec-score { font-size: 17px; font-weight: 800; font-variant-numeric: tabular-nums; }

.empty { color: var(--muted); text-align: center; padding: 40px; }
a.link { color: var(--brand-2); text-decoration: none; }
a.link:hover { text-decoration: underline; }