/* ============================================================
 * 算网调度与编排综合实训平台 — Midjourney 风格暗色玻璃拟态主题
 * ============================================================ */
:root {
  --bg-0: #08060f;
  --bg-1: #0e0a1c;
  --bg-2: #14102a;
  --surface: rgba(28, 22, 56, 0.55);
  --surface-2: rgba(40, 30, 78, 0.5);
  --border: rgba(167, 139, 250, 0.18);
  --border-strong: rgba(167, 139, 250, 0.4);
  --txt: #ece9ff;
  --txt-dim: #b4abd8;
  --txt-mute: #7d7299;
  --violet: #a78bfa;
  --violet-d: #7c3aed;
  --pink: #f472b6;
  --amber: #fbbf24;
  --green: #34d399;
  --blue: #60a5fa;
  --red: #fb7185;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --glow: 0 0 24px rgba(167, 139, 250, 0.35);
  --mono: 'JetBrains Mono', 'SF Mono', monospace;
  --sans: 'Space Grotesk', 'Noto Sans SC', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: var(--sans);
  color: var(--txt);
  background: var(--bg-0);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 动态极光背景 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(900px 600px at 12% 8%, rgba(124, 58, 237, 0.28), transparent 60%),
    radial-gradient(800px 700px at 88% 18%, rgba(244, 114, 182, 0.18), transparent 60%),
    radial-gradient(1000px 800px at 60% 95%, rgba(52, 211, 153, 0.12), transparent 60%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1));
  animation: auroraShift 18s ease-in-out infinite alternate;
}
body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    radial-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.5;
  pointer-events: none;
}
@keyframes auroraShift {
  0% { filter: hue-rotate(0deg); transform: scale(1); }
  100% { filter: hue-rotate(20deg); transform: scale(1.06); }
}

::selection { background: rgba(167, 139, 250, 0.4); color: #fff; }
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(167, 139, 250, 0.28); border-radius: 9px; }
::-webkit-scrollbar-thumb:hover { background: rgba(167, 139, 250, 0.5); }

/* ---------- 通用 ---------- */
.shell { min-height: 100vh; display: flex; flex-direction: column; }
.main { flex: 1; width: 100%; max-width: 1320px; margin: 0 auto; padding: 28px 28px 120px; }
.ico { display: inline-flex; width: 1em; height: 1em; }
.ico svg { width: 100%; height: 100%; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
}
.panel h3 { display: flex; align-items: center; gap: 8px; font-size: 16px; margin-bottom: 14px; color: var(--txt); }
.panel h3 .ico { color: var(--violet); width: 18px; height: 18px; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input { font-family: inherit; }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 14px 28px;
  background: rgba(8, 6, 15, 0.7);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 12px; }
/* 品牌 logo：白色透明底图，直接叠在暗色顶栏上，无需底板 */
.logo {
  height: 30px; width: auto; max-width: 130px;
  object-fit: contain;
  display: block; flex-shrink: 0;
  /* 透明 PNG 用 drop-shadow（跟随轮廓）；box-shadow 会画出矩形光晕 */
  filter: drop-shadow(0 0 10px rgba(167, 139, 250, 0.45));
}
.brand-title { font-weight: 700; font-size: 17px; letter-spacing: 0.3px; white-space: nowrap; }
.brand-sub { font-size: 11px; color: var(--txt-mute); letter-spacing: 1.5px; text-transform: uppercase; }

.topbar-stats { display: flex; gap: 10px; margin-left: auto; }
.chip {
  display: flex; align-items: center; gap: 7px;
  padding: 7px 13px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
}
.chip b { color: var(--violet); font-weight: 700; }

.role-switch { display: flex; gap: 6px; padding: 4px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; }
.role-btn { padding: 7px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; color: var(--txt-dim); transition: 0.25s; }
.role-btn.active { background: linear-gradient(135deg, var(--violet-d), var(--pink)); color: #fff; box-shadow: var(--glow); }
.role-btn:not(.active):hover { color: var(--txt); background: rgba(167, 139, 250, 0.12); }

/* ---------- 学生：页头 ---------- */
.page-head { margin-bottom: 26px; }
.page-head h1 { font-size: 32px; font-weight: 900; letter-spacing: 0.5px; }
.page-head h1::after { content: ''; display: block; width: 60px; height: 4px; border-radius: 4px; margin-top: 10px; background: linear-gradient(90deg, var(--violet), var(--pink)); }
.page-head p { margin-top: 10px; color: var(--txt-dim); font-size: 14px; }

/* ---------- 案例卡片 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 22px; margin-bottom: 34px; }
.case-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  cursor: pointer;
  backdrop-filter: blur(14px);
  box-shadow: var(--shadow);
  transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  overflow: hidden;
}
.case-card::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(120% 80% at 0% 0%, rgba(167, 139, 250, 0.14), transparent 55%);
  opacity: 0; transition: 0.3s;
}
.case-card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: 0 28px 70px rgba(124, 58, 237, 0.28); }
.case-card:hover::before { opacity: 1; }
.case-card.passed { border-color: rgba(52, 211, 153, 0.45); }
.case-card.passed::after { content: '✓ 已通关'; position: absolute; top: 14px; right: 14px; font-size: 11px; font-weight: 700; color: var(--green); background: rgba(52, 211, 153, 0.12); padding: 4px 10px; border-radius: 999px; }

.case-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.case-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 14px; color: #fff; }
.case-icon .ico { width: 24px; height: 24px; }
.cat-chip { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.cat-edge { background: linear-gradient(135deg, #0ea5e9, #34d399); }
.cat-gauge { background: linear-gradient(135deg, #f59e0b, #f472b6); }
.cat-tag { font-size: 11px; font-weight: 600; padding: 5px 11px; border-radius: 999px; letter-spacing: 0.5px; }
.cat-tag.cat-chip { color: var(--violet); background: rgba(167, 139, 250, 0.14); }
.cat-tag.cat-edge { color: var(--green); background: rgba(52, 211, 153, 0.14); }
.cat-tag.cat-gauge { color: var(--amber); background: rgba(251, 191, 36, 0.14); }

.case-title { font-size: 17px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.case-scenario { font-size: 13px; color: var(--txt-dim); line-height: 1.6; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.case-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 12px; color: var(--txt-mute); margin-bottom: 14px; }
.case-meta span { display: flex; align-items: center; gap: 4px; }

.progress-bar { height: 7px; background: rgba(255, 255, 255, 0.08); border-radius: 999px; overflow: hidden; margin-bottom: 12px; }
.progress-bar.sm { height: 6px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--violet), var(--pink)); border-radius: 999px; transition: width 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); box-shadow: 0 0 12px rgba(167, 139, 250, 0.5); }

.case-foot { display: flex; align-items: center; justify-content: space-between; }
.progress-text { font-size: 12px; color: var(--txt-dim); font-weight: 500; }
.enter-btn { font-size: 13px; font-weight: 600; color: var(--violet); transition: 0.2s; }
.case-card:hover .enter-btn { color: var(--pink); transform: translateX(3px); }

/* ---------- 成就墙 ---------- */
.ach-panel { margin-bottom: 20px; }
.ach-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.ach { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); transition: 0.25s; }
.ach.earned { border-color: rgba(251, 191, 36, 0.4); background: rgba(251, 191, 36, 0.06); }
.ach.earned .ach-icon { filter: drop-shadow(0 0 8px rgba(251, 191, 36, 0.5)); }
.ach.locked { opacity: 0.45; filter: grayscale(0.7); }
.ach-icon { font-size: 26px; }
.ach-name { font-weight: 600; font-size: 14px; }
.ach-desc { font-size: 11px; color: var(--txt-mute); }

/* ============================================================
 * 实训界面
 * ============================================================ */
.train-main { display: grid; grid-template-columns: 290px 1fr; gap: 20px; padding-top: 20px; align-items: start; }

/* 左侧任务列表 */
.task-list { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 12px; }
.back-btn { display: flex; align-items: center; gap: 6px; padding: 8px 12px; border-radius: 10px; font-size: 13px; color: var(--txt-dim); transition: 0.2s; align-self: flex-start; }
.back-btn:hover { color: var(--violet); background: rgba(167, 139, 250, 0.1); }
.back-btn .ico { width: 16px; height: 16px; }
.train-title { font-size: 15px; font-weight: 700; line-height: 1.4; padding: 0 4px; }
.train-progress { display: flex; align-items: center; gap: 10px; padding: 0 4px; }
.train-progress .progress-bar { flex: 1; margin: 0; }
.train-progress span { font-size: 12px; color: var(--txt-dim); font-weight: 600; min-width: 34px; text-align: right; }

.tasks { display: flex; flex-direction: column; gap: 8px; }
.task-item { display: flex; align-items: center; gap: 12px; padding: 11px 13px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); cursor: pointer; transition: 0.2s; }
.task-item:hover { border-color: var(--border-strong); transform: translateX(3px); }
.task-item.active { border-color: var(--violet); background: rgba(124, 58, 237, 0.14); box-shadow: var(--glow); }
.task-item.verified .task-no { background: linear-gradient(135deg, var(--green), #10b981); color: #fff; }
.task-no { width: 28px; height: 28px; flex-shrink: 0; display: grid; place-items: center; border-radius: 8px; background: rgba(255, 255, 255, 0.08); font-size: 12px; font-weight: 700; color: var(--txt-dim); }
.task-no .ico { width: 16px; height: 16px; }
.task-meta { flex: 1; min-width: 0; }
.task-name { font-size: 13px; font-weight: 500; line-height: 1.3; }
.task-pts { font-size: 11px; color: var(--txt-mute); margin-top: 2px; }
.task-item.verified .task-name { color: var(--green); }

.submit-all-btn { margin-top: 4px; padding: 13px; border-radius: var(--radius-sm); font-size: 14px; font-weight: 700; background: linear-gradient(135deg, var(--amber), var(--pink)); color: #1a0f2e; transition: 0.2s; box-shadow: 0 8px 24px rgba(251, 191, 36, 0.3); }
.submit-all-btn:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(251, 113, 133, 0.4); }
.submit-all-btn.disabled { background: var(--surface-2); color: var(--txt-mute); box-shadow: none; cursor: not-allowed; transform: none; }

/* 中间舞台 */
.stage { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; backdrop-filter: blur(14px); box-shadow: var(--shadow); min-height: 520px; }
.stage-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.stage-tag { font-size: 11px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(96, 165, 250, 0.14); color: var(--blue); }
.stage-tag.ok { background: rgba(52, 211, 153, 0.14); color: var(--green); }
.stage-head h2 { flex: 1; font-size: 19px; font-weight: 700; }
.stage-pts { font-size: 13px; font-weight: 700; color: var(--amber); }
.stage-objective { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 18px; }
.obj-label { font-size: 12px; font-weight: 700; color: var(--violet); margin-bottom: 6px; letter-spacing: 0.5px; }
.stage-objective p { font-size: 14px; color: var(--txt-dim); line-height: 1.6; }

/* 终端 */
.terminal-wrap { border: 1px solid var(--border); border-radius: var(--radius-sm); overflow: hidden; }
.terminal-bar { display: flex; align-items: center; gap: 7px; padding: 9px 14px; background: rgba(8, 6, 15, 0.6); border-bottom: 1px solid var(--border); }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.red { background: #ff5f57; } .dot.yellow { background: #febc2e; } .dot.green { background: #28c840; }
.terminal-title { margin-left: 8px; font-family: var(--mono); font-size: 12px; color: var(--txt-mute); }
.terminal-hint { margin-left: auto; font-size: 11px; color: var(--txt-mute); }
.terminal { height: 320px; overflow-y: auto; padding: 14px 16px; background: #06040d; font-family: var(--mono); font-size: 13px; line-height: 1.7; }
.t-line { white-space: pre-wrap; word-break: break-word; }
.t-line.cmd { color: var(--violet); }
.t-line.ok { color: var(--green); }
.t-line.err { color: var(--red); }
.t-line.sys { color: var(--txt-mute); }
.terminal-input-line { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: #06040d; border-top: 1px solid var(--border); }
.prompt { color: var(--green); font-family: var(--mono); font-weight: 700; }
.terminal-input { flex: 1; background: none; border: none; outline: none; color: var(--txt); font-family: var(--mono); font-size: 13px; }
.terminal-input::placeholder { color: var(--txt-mute); }

/* 右侧目标约束 */
.objective-panel { position: sticky; top: 84px; display: flex; flex-direction: column; gap: 14px; }
.constraint-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.constraint-list li { position: relative; padding-left: 18px; font-size: 13px; color: var(--txt-dim); line-height: 1.5; }
.constraint-list li::before { content: '▸'; position: absolute; left: 0; color: var(--violet); }
.case-objective { font-size: 13px; color: var(--txt-dim); line-height: 1.6; }

/* ============================================================
 * 结果页
 * ============================================================ */
.result-main { display: grid; place-items: center; }
.result-card { width: 100%; max-width: 560px; text-align: center; padding: 40px; background: var(--surface); border: 1px solid var(--border); border-radius: 24px; backdrop-filter: blur(18px); box-shadow: var(--shadow); position: relative; overflow: hidden; }
.result-card.win { border-color: rgba(251, 191, 36, 0.4); }
.result-card.win::before { content: ''; position: absolute; inset: 0; background: radial-gradient(120% 80% at 50% 0%, rgba(251, 191, 36, 0.18), transparent 60%); }
.result-grade { width: 110px; height: 110px; margin: 0 auto 20px; display: grid; place-items: center; border-radius: 50%; background: conic-gradient(from 0deg, var(--violet), var(--pink), var(--amber), var(--green), var(--violet)); box-shadow: 0 0 40px rgba(167, 139, 250, 0.5); animation: gradeSpin 8s linear infinite; }
@keyframes gradeSpin { to { transform: rotate(360deg); } }
.grade-letter { width: 96px; height: 96px; border-radius: 50%; background: var(--bg-1); display: grid; place-items: center; font-size: 52px; font-weight: 900; color: #fff; }
.result-card h1 { font-size: 26px; margin-bottom: 8px; }
.result-score { display: flex; align-items: baseline; justify-content: center; gap: 6px; margin-bottom: 8px; color: var(--txt-dim); }
.result-score .big { font-size: 48px; font-weight: 900; color: var(--amber); }
.result-tip { color: var(--txt-dim); font-size: 14px; margin-bottom: 24px; }
.result-detail { display: flex; flex-direction: column; gap: 8px; margin-bottom: 26px; text-align: left; }
.result-row { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); }
.result-row.fail { opacity: 0.7; }
.rstatus { width: 22px; height: 22px; display: grid; place-items: center; border-radius: 50%; font-size: 13px; font-weight: 700; }
.result-row:not(.fail) .rstatus { background: rgba(52, 211, 153, 0.2); color: var(--green); }
.result-row.fail .rstatus { background: rgba(251, 113, 133, 0.2); color: var(--red); }
.rname { flex: 1; font-size: 13px; }
.rpts { font-size: 13px; font-weight: 700; color: var(--txt-dim); }
.result-actions { display: flex; gap: 12px; justify-content: center; }
.btn-primary { padding: 12px 24px; border-radius: 12px; font-weight: 700; background: linear-gradient(135deg, var(--violet-d), var(--pink)); color: #fff; transition: 0.2s; box-shadow: var(--glow); }
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost { padding: 12px 24px; border-radius: 12px; font-weight: 600; background: var(--surface-2); border: 1px solid var(--border); color: var(--txt-dim); transition: 0.2s; }
.btn-ghost:hover { color: var(--txt); border-color: var(--border-strong); }

/* ============================================================
 * 教师端
 * ============================================================ */
.t-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.t-stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 18px; text-align: center; backdrop-filter: blur(12px); }
.t-stat-val { font-size: 32px; font-weight: 900; background: linear-gradient(135deg, var(--violet), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.t-stat-label { font-size: 12px; color: var(--txt-mute); margin-top: 4px; letter-spacing: 0.5px; }

.teacher-wrap .panel { margin-bottom: 22px; }
.trow { display: grid; grid-template-columns: 2fr 1fr 0.8fr 0.8fr 0.8fr 0.8fr; gap: 12px; padding: 12px 14px; border-radius: 10px; font-size: 13px; align-items: center; }
.trow + .trow { border-top: 1px solid var(--border); }
.trow.thead { font-weight: 700; color: var(--txt-dim); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; background: var(--surface-2); }
.t-name { font-weight: 600; }
.mini-btn { padding: 5px 12px; border-radius: 8px; font-size: 12px; background: rgba(167, 139, 250, 0.14); color: var(--violet); transition: 0.2s; }
.mini-btn:hover { background: rgba(167, 139, 250, 0.28); }

/* 学生表 */
.t-student-table .trow { grid-template-columns: 1.4fr 1.2fr repeat(3, 1fr) 0.8fr; }
.st-cell { font-size: 12px; }
.review-grade { display: inline-block; width: 22px; height: 22px; line-height: 22px; text-align: center; border-radius: 6px; font-size: 12px; font-weight: 700; margin-left: 8px; }
.review-grade.s { background: rgba(251, 191, 36, 0.2); color: var(--amber); }
.review-grade.a { background: rgba(52, 211, 153, 0.2); color: var(--green); }
.review-grade.b { background: rgba(96, 165, 250, 0.2); color: var(--blue); }
.review-grade.c { background: rgba(251, 113, 133, 0.2); color: var(--red); }

.empty-review { text-align: center; padding: 30px; }
.empty-ico { font-size: 42px; opacity: 0.5; margin-bottom: 10px; }
.empty-sub { font-size: 12px; color: var(--txt-mute); margin-top: 6px; }
.review-item { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px 16px; margin-bottom: 12px; }
.review-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.review-score { font-size: 18px; font-weight: 900; color: var(--amber); }
.review-rows { display: flex; flex-direction: column; gap: 6px; }
.review-rows .result-row { padding: 8px 12px; }

/* ---------- 模态 ---------- */
.overlay { position: fixed; inset: 0; z-index: 100; background: rgba(4, 3, 10, 0.7); backdrop-filter: blur(6px); display: grid; place-items: center; padding: 24px; animation: fadeIn 0.2s; }
@keyframes fadeIn { from { opacity: 0; } }
.modal { width: 100%; max-width: 680px; max-height: 86vh; overflow-y: auto; background: var(--bg-1); border: 1px solid var(--border-strong); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.modal-head { display: flex; align-items: flex-start; justify-content: space-between; margin-bottom: 14px; }
.modal-head h2 { font-size: 18px; padding-right: 20px; }
.x-btn { width: 30px; height: 30px; border-radius: 8px; font-size: 20px; color: var(--txt-mute); transition: 0.2s; }
.x-btn:hover { background: var(--surface-2); color: var(--txt); }
.modal-scenario { font-size: 13px; color: var(--txt-dim); line-height: 1.6; margin-bottom: 12px; }
.modal-objective { font-size: 13px; margin-bottom: 12px; color: var(--txt-dim); }
.modal-objective b { color: var(--violet); }
.modal-constraints { margin-bottom: 18px; }
.modal-constraints b { color: var(--violet); font-size: 13px; }
.modal-constraints div { font-size: 12px; color: var(--txt-dim); padding: 3px 0; }
.modal-tasks { display: flex; flex-direction: column; gap: 12px; }
.modal-task { background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; }
.mt-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.mt-pts { font-size: 12px; font-weight: 700; color: var(--amber); }
.mt-obj { font-size: 12px; color: var(--txt-dim); margin-bottom: 6px; }
.mt-checks { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.mt-checks-label { font-size: 11px; color: var(--txt-mute); }
.mt-checks code { font-family: var(--mono); font-size: 11px; padding: 3px 8px; border-radius: 6px; background: rgba(167, 139, 250, 0.12); color: var(--violet); }
.mt-constraints { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-mini { font-size: 11px; padding: 3px 9px; border-radius: 999px; background: rgba(255, 255, 255, 0.06); color: var(--txt-mute); }

/* ============================================================
 * 吉祥物 小算
 * ============================================================ */
.mascot { position: fixed; bottom: 22px; right: 26px; z-index: 60; display: flex; align-items: flex-end; gap: 10px; pointer-events: none; }
.mascot-body { pointer-events: auto; cursor: pointer; filter: drop-shadow(0 12px 24px rgba(124, 58, 237, 0.4)); transition: 0.3s; }
.mascot-body:hover { transform: translateY(-4px) scale(1.04); }
.mascot-float { animation: mFloat 4s ease-in-out infinite; transform-origin: center; }
@keyframes mFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
.mascot-shadow { animation: mShadow 4s ease-in-out infinite; }
@keyframes mShadow { 0%, 100% { transform: scaleX(1); opacity: 0.18; } 50% { transform: scaleX(0.8); opacity: 0.1; } }
.mascot-antenna { animation: blink 1.6s ease-in-out infinite; transform-origin: 60px 6px; }
@keyframes blink { 50% { opacity: 0.4; transform: scale(0.7); } }
.mascot-eyes .pupil { transition: transform 0.3s; }
.mascot-mouth { transition: d 0.3s; }

/* 心情 */
.mascot-body[data-mood='idle'] .mascot-mouth { d: path('M54 74 Q60 80 66 74'); }
.mascot-body[data-mood='happy'] .mascot-mouth { d: path('M52 72 Q60 84 68 72'); }
.mascot-body[data-mood='happy'] .mascot-antenna { animation: blink 0.4s ease-in-out infinite; fill: var(--amber); }
.mascot-body[data-mood='think'] .mascot-mouth { d: path('M54 78 L66 78'); }
.mascot-body[data-mood='think'] .pupil { transform: translate(1px, -1px); }

.bubble {
  max-width: 230px;
  background: rgba(20, 16, 42, 0.92);
  border: 1px solid var(--border-strong);
  border-radius: 14px 14px 14px 4px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--txt);
  opacity: 0;
  transform: translateY(8px) scale(0.95);
  transition: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  pointer-events: none;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.bubble.show { opacity: 1; transform: translateY(0) scale(1); }

/* 礼花画布 */
#fireworks { position: fixed; inset: 0; z-index: 200; pointer-events: none; }

/* ============================================================
 * 学生端：基础/进阶分类
 * ============================================================ */
.level-section { margin-bottom: 30px; }
.level-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.level-head h2 { font-size: 20px; font-weight: 700; }
.level-badge { font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; letter-spacing: 0.5px; }
.level-badge.basic { background: rgba(96, 165, 250, 0.16); color: var(--blue); }
.level-badge.advanced { background: rgba(244, 114, 182, 0.16); color: var(--pink); }
.level-sub { font-size: 13px; color: var(--txt-mute); }
.empty-tip { text-align: center; padding: 40px; color: var(--txt-dim); }

/* ============================================================
 * 教师端：Tab / 概览 / 案例管理 / 成绩查阅
 * ============================================================ */
.t-tabs { display: flex; gap: 6px; margin-bottom: 24px; padding: 5px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; width: fit-content; }
.t-tab { display: flex; align-items: center; gap: 8px; padding: 10px 20px; border-radius: 10px; font-size: 14px; font-weight: 600; color: var(--txt-dim); transition: 0.25s; }
.t-tab .ico { width: 18px; height: 18px; }
.t-tab:hover { color: var(--txt); background: rgba(167, 139, 250, 0.08); }
.t-tab.active { background: linear-gradient(135deg, var(--violet-d), var(--pink)); color: #fff; box-shadow: var(--glow); }

/* 概览 */
.t-overview { display: flex; flex-direction: column; gap: 22px; }
.t-overview-row { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; }
.t-stats.sm { grid-template-columns: repeat(3, 1fr); margin: 0; }
.ov-case-list { display: flex; flex-direction: column; gap: 10px; }
.ov-case-row { display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); }
.ov-case-name { flex: 1; font-size: 13px; font-weight: 500; }
.ov-level { font-size: 11px; font-weight: 700; padding: 3px 9px; border-radius: 999px; flex-shrink: 0; }
.ov-level.basic { background: rgba(96, 165, 250, 0.16); color: var(--blue); }
.ov-level.advanced { background: rgba(244, 114, 182, 0.16); color: var(--pink); }
.ov-status { font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.ov-status.on { background: rgba(52, 211, 153, 0.14); color: var(--green); }
.ov-status.off { background: rgba(251, 113, 133, 0.14); color: var(--red); }
.ov-tip { font-size: 12px; color: var(--txt-mute); margin-top: 14px; }

/* 案例管理表格 */
.cm-tip { font-size: 13px; color: var(--txt-mute); margin-bottom: 16px; }
.cm-grid { grid-template-columns: 2fr 0.7fr 0.9fr 0.6fr 0.9fr 1.1fr !important; }
.cm-actions { display: flex; gap: 6px; }
.mini-btn.ghost { background: rgba(255, 255, 255, 0.06); color: var(--txt-dim); }
.mini-btn.ghost:hover { background: rgba(167, 139, 250, 0.18); color: var(--violet); }

/* 开关 switch */
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.switch input { display: none; }
.switch-track { width: 40px; height: 22px; border-radius: 999px; background: rgba(251, 113, 133, 0.3); position: relative; transition: 0.25s; flex-shrink: 0; }
.switch-thumb { position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1); }
.switch.on .switch-track { background: linear-gradient(135deg, var(--green), #10b981); }
.switch.on .switch-thumb { left: 21px; }
.switch-label { font-size: 12px; font-weight: 600; color: var(--txt-dim); min-width: 30px; }
.switch.on .switch-label { color: var(--green); }

/* 编辑模态 */
.edit-modal { max-width: 540px; }
.edit-field { margin-bottom: 18px; }
.edit-label { display: block; font-size: 13px; font-weight: 600; color: var(--txt); margin-bottom: 8px; }
.edit-input { width: 100%; padding: 11px 14px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); color: var(--txt); font-size: 14px; font-family: inherit; transition: 0.2s; }
.edit-input:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.15); }
.edit-textarea { width: 100%; padding: 11px 14px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); color: var(--txt); font-size: 13px; line-height: 1.6; font-family: inherit; resize: vertical; transition: 0.2s; }
.edit-textarea:focus { outline: none; border-color: var(--violet); box-shadow: 0 0 0 3px rgba(167, 139, 250, 0.15); }
.edit-hint { display: block; font-size: 11px; color: var(--txt-mute); margin-top: 6px; }
.edit-readonly { font-size: 12px; color: var(--txt-mute); padding: 10px 14px; border-radius: 8px; background: rgba(255, 255, 255, 0.03); margin-bottom: 18px; }
.edit-actions { display: flex; gap: 10px; justify-content: flex-end; }

/* 成绩查阅表格 */
.sr-grid { grid-template-columns: 1.2fr 1.6fr 1.3fr 1.1fr 0.8fr 1.4fr !important; }
.sr-time { font-size: 12px; color: var(--txt-dim); font-family: var(--mono); }
.sr-status { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; }
.sr-status.pass { background: rgba(52, 211, 153, 0.14); color: var(--green); }
.sr-status.fail { background: rgba(251, 113, 133, 0.14); color: var(--red); }
.sr-grade { font-style: normal; font-weight: 700; padding: 1px 6px; border-radius: 5px; font-size: 11px; }
.sr-grade.s { background: rgba(251, 191, 36, 0.2); color: var(--amber); }
.sr-grade.a { background: rgba(52, 211, 153, 0.2); color: var(--green); }
.sr-grade.b { background: rgba(96, 165, 250, 0.2); color: var(--blue); }
.sr-grade.c { background: rgba(251, 113, 133, 0.2); color: var(--red); }
.sr-score { font-weight: 700; color: var(--amber); }
.sr-actions { display: flex; gap: 6px; }

/* 成绩详情模态 */
.sr-detail-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border); }
.sr-detail-meta { display: flex; flex-direction: column; gap: 4px; }
.muted { color: var(--txt-mute); font-size: 13px; }
.sr-detail-score { display: flex; align-items: baseline; gap: 4px; }
.big-score { font-size: 36px; font-weight: 900; color: var(--amber); }
.sr-detail-status { padding: 10px 14px; border-radius: 10px; font-size: 13px; font-weight: 600; margin-bottom: 16px; }
.sr-detail-status.pass { background: rgba(52, 211, 153, 0.12); color: var(--green); }
.sr-detail-status.fail { background: rgba(251, 113, 133, 0.12); color: var(--red); }

/* 操作记录模态 */
.op-modal { max-width: 720px; }
.op-meta { display: flex; gap: 14px; align-items: center; margin-bottom: 16px; padding-bottom: 14px; border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.op-terminal { display: flex; flex-direction: column; gap: 10px; max-height: 56vh; overflow-y: auto; }
.op-line { background: var(--surface-2); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; }
.op-tag { display: inline-block; font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: 6px; margin-bottom: 6px; }
.op-tag.ok { background: rgba(52, 211, 153, 0.16); color: var(--green); }
.op-tag.err { background: rgba(251, 113, 133, 0.16); color: var(--red); }
.op-cmd { font-family: var(--mono); font-size: 12px; color: var(--violet); margin: 0 0 6px; white-space: pre-wrap; word-break: break-word; }
.op-out { font-family: var(--mono); font-size: 11px; color: var(--txt-dim); margin: 0; white-space: pre-wrap; word-break: break-word; line-height: 1.5; }
.op-out.err { color: var(--red); }

/* ============================================================
 * 学生端：模块切换大 Tab / 筛选 / 封面图 / 介绍页 / 任务目标
 * ============================================================ */
/* ---------- 大标题级模块切换 Tab ---------- */
.s-nav { display: flex; gap: 10px; margin-bottom: 28px; }
.s-nav-tab {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 28px;
  border-radius: var(--radius-sm);
  font-size: 20px; font-weight: 700;
  color: var(--txt-mute);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: 0.25s;
  position: relative;
}
.s-nav-tab .ico { width: 24px; height: 24px; }
.s-nav-tab:hover { color: var(--txt); border-color: var(--border-strong); transform: translateY(-2px); }
.s-nav-tab.active {
  background: linear-gradient(135deg, var(--violet-d), var(--pink));
  color: #fff;
  box-shadow: var(--glow);
  border-color: transparent;
}

/* ---------- 筛选维度 ---------- */
.filter-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 18px 22px;
  margin-bottom: 24px;
  display: flex; flex-direction: column; gap: 12px;
  backdrop-filter: blur(14px);
}
.filter-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.filter-label { font-size: 13px; font-weight: 700; color: var(--txt-mute); min-width: 56px; }
.filter-chip {
  padding: 7px 16px; border-radius: 999px;
  font-size: 13px; font-weight: 500;
  color: var(--txt-dim);
  background: var(--surface-2);
  border: 1px solid var(--border);
  transition: 0.2s;
}
.filter-chip:hover { color: var(--txt); border-color: var(--border-strong); }
.filter-chip.active {
  background: linear-gradient(135deg, var(--violet-d), var(--violet));
  color: #fff; border-color: transparent;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
}

/* ---------- 案例封面图卡片 ---------- */
.case-cover {
  position: relative; width: 100%; height: 170px;
  overflow: hidden; border-radius: var(--radius) var(--radius) 0 0;
}
.case-cover img { width: 100%; height: 100%; object-fit: cover; transition: 0.4s; }
.case-card:hover .case-cover img { transform: scale(1.06); }
.case-cover-overlay {
  position: absolute; top: 12px; left: 12px;
  display: flex; gap: 8px;
}
.level-badge {
  font-size: 11px; font-weight: 700; padding: 4px 10px;
  border-radius: 999px; letter-spacing: 0.5px;
  backdrop-filter: blur(8px);
}
.level-badge.basic { background: rgba(52, 211, 153, 0.2); color: var(--green); border: 1px solid rgba(52, 211, 153, 0.3); }
.level-badge.advanced { background: rgba(251, 191, 36, 0.2); color: var(--amber); border: 1px solid rgba(251, 191, 36, 0.3); }
.industry-badge {
  font-size: 11px; font-weight: 600; padding: 4px 10px;
  border-radius: 999px; color: var(--txt);
  background: rgba(8, 6, 15, 0.6); border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.case-passed-stamp {
  position: absolute; top: 12px; right: 12px;
  font-size: 11px; font-weight: 700; color: var(--green);
  background: rgba(52, 211, 153, 0.15); padding: 4px 10px;
  border-radius: 999px; backdrop-filter: blur(8px);
}
.case-card-body { padding: 18px 22px 22px; }

/* ---------- 介绍页 ---------- */
.intro-main { max-width: 860px; }
.intro-wrap { display: flex; flex-direction: column; gap: 16px; padding-top: 20px; }
.intro-card { padding: 32px; }
/* 步骤指示器 */
.intro-steps { display: flex; align-items: center; gap: 10px; margin-bottom: 28px; }
.step-dot {
  width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  font-size: 15px; font-weight: 700; color: var(--txt-mute);
  background: var(--surface-2); border: 2px solid var(--border);
}
.step-dot.active { background: linear-gradient(135deg, var(--violet-d), var(--violet)); color: #fff; border-color: transparent; box-shadow: var(--glow); }
.step-dot.done { background: linear-gradient(135deg, var(--green), #10b981); color: #fff; border-color: transparent; }
.step-line { flex: 1; max-width: 60px; height: 3px; border-radius: 3px; background: var(--border); }
.step-line.active { background: linear-gradient(90deg, var(--green), var(--violet)); }
.step-labels { display: flex; flex-direction: column; gap: 2px; }
.step-label { font-size: 13px; font-weight: 600; color: var(--txt); }
.step-label.dim { color: var(--txt-mute); font-weight: 400; }
/* 封面图 */
.intro-cover { width: 100%; height: 280px; border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 20px; }
.intro-cover img { width: 100%; height: 100%; object-fit: cover; }
.intro-title { font-size: 26px; font-weight: 900; margin-bottom: 18px; line-height: 1.3; }
.intro-title.sm { font-size: 22px; }
.intro-title::after { content: ''; display: block; width: 60px; height: 4px; border-radius: 4px; margin-top: 10px; background: linear-gradient(90deg, var(--violet), var(--pink)); }
/* 场景文本 */
.intro-section { margin-bottom: 20px; }
.intro-scenario-text { font-size: 15px; color: var(--txt-dim); line-height: 1.8; }
.intro-sub { font-size: 14px; color: var(--txt-mute); margin-bottom: 18px; }
/* 岗位/难度/时长卡片 */
.intro-meta-row { display: flex; gap: 14px; margin-bottom: 20px; }
.intro-meta-card { flex: 1; padding: 14px 16px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); }
.intro-meta-label { font-size: 11px; color: var(--txt-mute); letter-spacing: 0.5px; margin-bottom: 6px; }
.intro-meta-val { font-size: 15px; font-weight: 700; color: var(--violet); }
/* 技能点标签 */
.intro-skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.intro-skill-tag {
  padding: 7px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  color: var(--blue); background: rgba(96, 165, 250, 0.12);
  border: 1px solid rgba(96, 165, 250, 0.25);
}
/* 已知条件列表 */
.prereq-list { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.prereq-item { display: flex; gap: 14px; padding: 16px; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); }
.prereq-icon { font-size: 26px; flex-shrink: 0; }
.prereq-body { flex: 1; }
.prereq-name { font-size: 14px; font-weight: 700; color: var(--txt); margin-bottom: 4px; }
.prereq-detail { font-size: 13px; color: var(--txt-dim); line-height: 1.6; }
.intro-objective-text { font-size: 15px; color: var(--txt-dim); line-height: 1.7; }
/* 介绍页按钮 */
.intro-actions { display: flex; gap: 12px; margin-top: 24px; }
.btn-primary { padding: 13px 28px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 700; background: linear-gradient(135deg, var(--violet-d), var(--pink)); color: #fff; box-shadow: 0 8px 24px rgba(124, 58, 237, 0.3); transition: 0.2s; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(244, 114, 182, 0.4); }
.btn-ghost { padding: 13px 28px; border-radius: var(--radius-sm); font-size: 15px; font-weight: 600; color: var(--txt-dim); background: var(--surface-2); border: 1px solid var(--border); transition: 0.2s; }
.btn-ghost:hover { color: var(--txt); border-color: var(--border-strong); }

/* ---------- 任务目标整合框 ---------- */
.task-goal-box {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08), rgba(244, 114, 182, 0.05));
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin-bottom: 18px;
}
.task-goal-label { font-size: 13px; font-weight: 700; color: var(--violet); margin-bottom: 10px; letter-spacing: 0.5px; }
.task-goal-text { font-size: 17px; font-weight: 600; color: var(--txt); line-height: 1.6; margin-bottom: 16px; }
.task-goal-constraints { margin-bottom: 14px; }
.goal-constraint-label { font-size: 12px; font-weight: 600; color: var(--txt-mute); margin-bottom: 8px; }
.goal-constraint-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.goal-constraint-tag {
  font-size: 12px; padding: 5px 11px; border-radius: 8px;
  color: var(--txt-dim); background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border);
}
.goal-constraint-tag.case-level { color: var(--amber); background: rgba(251, 191, 36, 0.08); border-color: rgba(251, 191, 36, 0.2); }
.task-goal-case-obj { padding-top: 14px; border-top: 1px solid var(--border); }
.task-goal-case-text { font-size: 13px; color: var(--txt-dim); line-height: 1.6; }

/* ---------- 重置按钮 ---------- */
.reset-btn {
  margin-top: 4px; padding: 10px; border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600; color: var(--txt-mute);
  background: var(--surface-2); border: 1px solid var(--border);
  transition: 0.2s;
}
.reset-btn:hover { color: var(--red); border-color: rgba(251, 113, 133, 0.35); background: rgba(251, 113, 133, 0.06); }

/* ---------- 技能图谱 ---------- */
.skills-wrap { animation: fadeIn 0.3s; }
.skill-overview { display: flex; align-items: center; gap: 30px; padding: 28px 30px; margin-bottom: 24px; }
.skill-ring { flex-shrink: 0; filter: drop-shadow(0 0 20px rgba(167, 139, 250, 0.35)); }
.skill-overview-info { flex: 1; }
.skill-overview-title { font-size: 13px; color: var(--txt-mute); letter-spacing: 1px; text-transform: uppercase; }
.skill-overview-num { font-size: 20px; margin: 8px 0; color: var(--txt-dim); }
.skill-overview-num b { font-size: 36px; font-weight: 900; color: var(--violet); }
.skill-overview-tip { font-size: 13px; color: var(--txt-dim); margin-bottom: 16px; }
.skill-dir-mini { display: flex; flex-wrap: wrap; gap: 10px; }
.skill-dir-mini-item { display: flex; align-items: center; gap: 7px; padding: 6px 12px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); font-size: 12px; }
.skill-dir-mini-item .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot.blue { background: var(--blue); }
.dot.violet { background: var(--violet); }
.dot.green { background: var(--green); }
.dot.amber { background: var(--amber); }
.skill-dir-mini-item b { color: var(--txt); }

.skill-trees { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.skill-tree { padding: 22px; max-height: 600px; overflow-y: auto; }
.skill-tree.dir-blue { border-top: 3px solid var(--blue); }
.skill-tree.dir-violet { border-top: 3px solid var(--violet); }
.skill-tree.dir-green { border-top: 3px solid var(--green); }
.skill-tree.dir-amber { border-top: 3px solid var(--amber); }
.skill-tree-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.skill-tree-icon { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; color: #fff; flex-shrink: 0; }
.skill-tree-icon .ico { width: 22px; height: 22px; }
.skill-tree-icon.blue { background: linear-gradient(135deg, #2563eb, #60a5fa); }
.skill-tree-icon.violet { background: linear-gradient(135deg, #7c3aed, #a78bfa); }
.skill-tree-icon.green { background: linear-gradient(135deg, #059669, #34d399); }
.skill-tree-icon.amber { background: linear-gradient(135deg, #d97706, #fbbf24); }
.skill-tree-title { flex: 1; }
.skill-tree-title h3 { font-size: 16px; }
.skill-tree-tag { font-size: 11px; color: var(--txt-mute); }
.skill-tree-pct { font-size: 22px; font-weight: 900; }
.skill-tree-pct.blue { color: var(--blue); }
.skill-tree-pct.violet { color: var(--violet); }
.skill-tree-pct.green { color: var(--green); }
.skill-tree-pct.amber { color: var(--amber); }
.skill-progress { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.skill-progress .progress-bar { flex: 1; margin: 0; }
.fill-blue { background: linear-gradient(90deg, #2563eb, #60a5fa) !important; box-shadow: 0 0 12px rgba(96, 165, 250, 0.4); }
.fill-violet { background: linear-gradient(90deg, #7c3aed, #a78bfa) !important; box-shadow: 0 0 12px rgba(167, 139, 250, 0.5); }
.fill-green { background: linear-gradient(90deg, #059669, #34d399) !important; box-shadow: 0 0 12px rgba(52, 211, 153, 0.4); }
.fill-amber { background: linear-gradient(90deg, #d97706, #fbbf24) !important; box-shadow: 0 0 12px rgba(251, 191, 36, 0.4); }
.skill-progress-num { font-size: 12px; color: var(--txt-dim); font-weight: 600; min-width: 38px; text-align: right; }

.skill-nodes { display: flex; flex-direction: column; gap: 8px; }
.skill-node { display: flex; align-items: center; gap: 12px; padding: 10px 12px; border-radius: 10px; background: var(--surface-2); border: 1px solid var(--border); transition: 0.2s; opacity: 0.65; }
.skill-node.mastered { opacity: 1; border-color: rgba(52, 211, 153, 0.35); background: rgba(52, 211, 153, 0.05); }
.skill-node-dot { width: 26px; height: 26px; flex-shrink: 0; display: grid; place-items: center; border-radius: 8px; background: rgba(255, 255, 255, 0.06); font-size: 11px; font-weight: 700; color: var(--txt-mute); }
.skill-node.mastered .skill-node-dot { background: linear-gradient(135deg, var(--green), #10b981); color: #fff; }
.skill-node-body { flex: 1; min-width: 0; }
.skill-node-name { font-size: 13px; font-weight: 500; }
.skill-node.mastered .skill-node-name { color: var(--green); }
.skill-node-case { font-size: 11px; color: var(--txt-mute); margin-top: 1px; }
.skill-node-pts { font-size: 12px; font-weight: 700; color: var(--txt-mute); }
.skill-node-pts.on { color: var(--green); }

/* ---------- 提交记录 ---------- */
.records-wrap { animation: fadeIn 0.3s; }
.rec-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.rec-list { display: flex; flex-direction: column; gap: 14px; }
.rec-card { display: flex; align-items: center; gap: 18px; padding: 18px 22px; transition: 0.25s; }
.rec-card:hover { transform: translateX(4px); border-color: var(--border-strong); }
.rec-card.pass { border-left: 3px solid var(--green); }
.rec-card.fail { border-left: 3px solid var(--red); }
.rec-grade-circle { width: 52px; height: 52px; flex-shrink: 0; display: grid; place-items: center; border-radius: 50%; font-size: 24px; font-weight: 900; color: #fff; }
.rec-grade-circle.s { background: linear-gradient(135deg, #d97706, #fbbf24); box-shadow: 0 0 16px rgba(251, 191, 36, 0.4); }
.rec-grade-circle.a { background: linear-gradient(135deg, #059669, #34d399); box-shadow: 0 0 16px rgba(52, 211, 153, 0.4); }
.rec-grade-circle.b { background: linear-gradient(135deg, #2563eb, #60a5fa); box-shadow: 0 0 16px rgba(96, 165, 250, 0.4); }
.rec-grade-circle.c { background: linear-gradient(135deg, #be123c, #fb7185); box-shadow: 0 0 16px rgba(251, 113, 133, 0.4); }
.rec-main { flex: 1; min-width: 0; }
.rec-case-title { font-size: 15px; font-weight: 700; margin-bottom: 6px; }
.rec-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: 12px; color: var(--txt-mute); }
.rec-pass-tasks { color: var(--green); font-weight: 600; }
.rec-score-block { text-align: right; flex-shrink: 0; }
.rec-score-val { font-size: 26px; font-weight: 900; color: var(--amber); line-height: 1; }
.rec-score-max { font-size: 12px; color: var(--txt-mute); }
.rec-status { font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 999px; flex-shrink: 0; }
.rec-status.pass { background: rgba(52, 211, 153, 0.14); color: var(--green); }
.rec-status.fail { background: rgba(251, 113, 133, 0.14); color: var(--red); }
.rec-actions { display: flex; flex-direction: column; gap: 6px; flex-shrink: 0; }
.empty-records { text-align: center; padding: 50px 30px; }
.empty-records .empty-ico { font-size: 46px; opacity: 0.5; margin-bottom: 14px; }
.empty-records .empty-title { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.empty-records .empty-sub { font-size: 13px; color: var(--txt-mute); margin-bottom: 20px; }

/* ============================================================
 * 响应式
 * ============================================================ */
@media (max-width: 1100px) {
  .train-main { grid-template-columns: 260px 1fr; }
  .objective-panel { grid-column: 1 / -1; position: static; flex-direction: row; flex-wrap: wrap; }
  .objective-panel .panel { flex: 1; min-width: 240px; }
}
@media (max-width: 820px) {
  .topbar { flex-wrap: wrap; gap: 12px; }
  .topbar-stats { order: 3; width: 100%; justify-content: center; }
  .train-main { grid-template-columns: 1fr; }
  .task-list { position: static; }
  .t-stats { grid-template-columns: repeat(2, 1fr); }
  .trow { grid-template-columns: 1.4fr 0.8fr 0.7fr; font-size: 11px; }
  .trow > span:nth-child(n+4) { display: none; }
  .t-tabs { width: 100%; overflow-x: auto; }
  .t-tab { padding: 9px 14px; font-size: 13px; }
  .t-overview-row { grid-template-columns: 1fr; }
  .cm-grid, .sr-grid { grid-template-columns: 1.4fr 0.8fr 0.7fr !important; }
  .cm-grid > span:nth-child(n+4), .sr-grid > span:nth-child(n+4) { display: none; }
  .level-head h2 { font-size: 17px; }
  .s-nav { overflow-x: auto; }
  .s-nav-tab { padding: 12px 18px; font-size: 16px; flex-shrink: 0; }
  .intro-meta-row { flex-direction: column; gap: 10px; }
  .skill-overview { flex-direction: column; text-align: center; gap: 18px; }
  .skill-trees { grid-template-columns: 1fr; }
  .rec-stats { grid-template-columns: repeat(2, 1fr); }
  .rec-card { flex-wrap: wrap; gap: 12px; }
  .rec-score-block { width: 100%; text-align: left; }
  .mascot { right: 12px; bottom: 12px; }
  .mascot-body svg { width: 64px; height: 76px; }
}