/* ===== 电网危机·特工学院 样式表 v2 ===== */
:root{
  --water:#1E88E5;
  --elec:#00E5FF;
  --pos:#E53935;
  --neg:#1565C0;
  --warn:#FB8C00;
  --bg1:#0D1B2A;
  --bg2:#1B3A5B;
  --good:#43C678;
  --bad:#FF5252;
  --card:#13294A;
  --line:#2C4A6E;
  --txt:#E8F1FA;
  --txt2:#9FB6D1;
  --gold:#FFD54F;
  --purple:#AB47BC;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;max-width:100vw;}
html,body{margin:0;padding:0;height:100%;width:100%;overflow-x:hidden;}
html{width:100vw;}
body{width:100vw;max-width:100vw;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:linear-gradient(160deg,var(--bg1),var(--bg2));
  color:var(--txt);
  font-size:16px;line-height:1.5;
  overflow-x:hidden;
}
#app{max-width:480px;margin:0 auto;height:100%;position:relative;width:100%;box-sizing:border-box;}
.screen{width:100%;box-sizing:border-box;}
.screen *{max-width:100%;box-sizing:border-box;}
.svg-stage svg,.reading-body svg{max-width:100%;height:auto;}
.reading-body table{max-width:100%;display:block;overflow-x:auto;}
.reading-body pre,.reading-body code{max-width:100%;overflow-x:auto;word-break:break-word;}
img{max-width:100%;height:auto;}

/* ===== 屏幕切换 ===== */
.screen{display:none;height:100%;flex-direction:column;overflow-y:auto;-webkit-overflow-scrolling:touch;}
.screen.active{display:flex;}
.screen.overlay{position:absolute;inset:0;z-index:50;background:rgba(5,12,24,.94);backdrop-filter:blur(4px);}

/* ===== 开始/通关/结束页 ===== */
.hero{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:32px 24px;}
.logo-emoji{font-size:56px;margin-bottom:12px;animation:float 3s ease-in-out infinite;}
@keyframes float{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}
h1{margin:0 0 6px;font-size:30px;letter-spacing:2px;color:#fff;text-shadow:0 2px 12px rgba(0,229,255,.4);}
.subtitle{margin:0 0 20px;color:var(--txt2);font-size:15px;}
.badge{background:linear-gradient(135deg,var(--pos),var(--warn));color:#fff;padding:6px 16px;border-radius:20px;font-size:14px;font-weight:600;margin-bottom:12px;box-shadow:0 4px 14px rgba(229,57,53,.35);}
.mode-tag{background:rgba(0,229,255,.15);color:var(--elec);padding:5px 14px;border-radius:16px;font-size:13px;font-weight:600;margin-bottom:18px;border:1px solid rgba(0,229,255,.3);}
.progress-home{width:100%;max-width:300px;margin-bottom:22px;}
.progress-bar{height:10px;background:var(--card);border-radius:6px;overflow:hidden;border:1px solid var(--line);}
.progress-fill{height:100%;width:0;background:linear-gradient(90deg,var(--elec),var(--good));border-radius:6px;transition:width .5s;}
.progress-text{margin-top:8px;font-size:13px;color:var(--txt2);}
.hint{margin-top:18px;font-size:12px;color:var(--txt2);opacity:.8;}

/* ===== 按钮 ===== */
.btn{display:block;width:100%;padding:14px 18px;border:none;border-radius:14px;font-size:17px;font-weight:600;font-family:inherit;cursor:pointer;transition:transform .12s,box-shadow .12s;margin-bottom:10px;}
.btn:active{transform:scale(.97);}
.btn-primary{background:linear-gradient(135deg,var(--water),var(--elec));color:#04121F;box-shadow:0 6px 18px rgba(0,229,255,.3);}
.btn-ghost{background:transparent;color:var(--txt2);border:1px solid var(--line);}
#btn-next,#btn-reading-next{margin-top:8px;}

/* ===== 模式选择卡片 ===== */
.mode-card{width:100%;padding:20px 18px;border-radius:16px;background:var(--card);border:2px solid var(--line);margin-bottom:14px;cursor:pointer;transition:all .15s;}
.mode-card:active{transform:scale(.98);}
.mode-card.mode-classic{border-color:var(--elec);background:linear-gradient(135deg,var(--card),rgba(0,229,255,.08));}
.mode-card.mode-hardcore{border-color:var(--bad);background:linear-gradient(135deg,var(--card),rgba(255,82,82,.08));}
.mode-emoji{font-size:36px;margin-bottom:8px;}
.mode-name{font-size:20px;font-weight:700;color:#fff;margin-bottom:6px;}
.mode-desc{font-size:13px;color:var(--txt2);line-height:1.5;}

/* ===== 关卡页头部 ===== */
.level-header{display:flex;align-items:center;gap:10px;padding:12px 14px;background:rgba(13,27,42,.7);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;}
.icon-btn{flex:0 0 auto;width:38px;height:38px;border-radius:10px;background:var(--card);color:var(--txt);border:1px solid var(--line);font-size:20px;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.level-meta{flex:1;}
.phase-tag{display:inline-block;font-size:11px;color:var(--elec);background:rgba(0,229,255,.12);padding:2px 8px;border-radius:8px;letter-spacing:1px;}
.rank-line{font-size:13px;color:var(--gold);margin-top:2px;}
.level-num{font-size:22px;font-weight:800;color:#fff;font-family:"Courier New",monospace;}

.briefing-bar{display:flex;align-items:center;gap:8px;padding:10px 14px;background:rgba(251,140,0,.12);border-bottom:1px solid rgba(251,140,0,.3);}
.briefing-icon{font-size:18px;}
#briefing-text{font-size:14px;color:var(--txt);font-weight:500;}

.progress-thin{height:4px;background:var(--card);}
.progress-thin .progress-fill{background:linear-gradient(90deg,var(--pos),var(--gold),var(--good));}

/* ===== SVG 舞台 ===== */
.svg-stage{padding:14px;display:flex;align-items:center;justify-content:center;min-height:200px;}
.svg-stage svg{width:100%;max-width:360px;height:auto;max-height:260px;}
.svg-stage.empty{min-height:20px;}
.svg-stage.celebrate{animation:celebrate .4s;}
@keyframes celebrate{0%,100%{transform:scale(1);}50%{transform:scale(1.04);filter:brightness(1.2);}}

.question-text{padding:6px 16px 10px;font-size:16px;line-height:1.55;color:var(--txt);font-weight:500;}

/* ===== 选项 ===== */
.options{padding:4px 14px 8px;display:flex;flex-direction:column;gap:10px;}
.opt-btn{
  position:relative;text-align:left;padding:14px 44px 14px 16px;border-radius:14px;
  background:var(--card);color:var(--txt);border:2px solid var(--line);
  font-size:16px;font-family:inherit;cursor:pointer;line-height:1.4;transition:all .15s;
}
.opt-btn .opt-key{position:absolute;right:12px;top:50%;transform:translateY(-50%);width:28px;height:28px;border-radius:50%;background:var(--bg2);color:var(--txt2);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;}
.opt-btn:hover{border-color:var(--elec);}
.opt-btn.correct{border-color:var(--good);background:rgba(67,198,120,.18);}
.opt-btn.correct .opt-key{background:var(--good);color:#04121F;}
.opt-btn.wrong{border-color:var(--bad);background:rgba(255,82,82,.16);animation:shake .4s;}
.opt-btn.wrong .opt-key{background:var(--bad);color:#fff;}
.opt-btn.disabled{opacity:.55;cursor:not-allowed;}
@keyframes shake{0%,100%{transform:translateX(0);}25%{transform:translateX(-6px);}75%{transform:translateX(6px);}}

/* ===== 反馈 ===== */
.feedback{margin:4px 14px 12px;border-radius:12px;padding:0 14px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .25s ease;}
.feedback.show{max-height:600px;padding:12px 14px;overflow-y:auto;-webkit-overflow-scrolling:touch;}
.feedback.correct-fb{background:rgba(67,198,120,.14);border:1px solid rgba(67,198,120,.4);}
.feedback.wrong-fb{background:rgba(255,82,82,.12);border:1px solid rgba(255,82,82,.4);}
.feedback-title{font-weight:700;font-size:15px;margin-bottom:6px;display:flex;align-items:center;gap:6px;}
.feedback.correct-fb .feedback-title{color:var(--good);}
.feedback.wrong-fb .feedback-title{color:var(--bad);}
.feedback-body{font-size:14px;line-height:1.65;color:var(--txt);word-break:break-word;}

/* 自定义确认弹窗 */
#cf-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:9999;display:flex;align-items:center;justify-content:center;padding:24px;}
.cf-box{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:20px 18px 14px;max-width:320px;width:100%;box-shadow:0 12px 40px rgba(0,0,0,.5);}
.cf-msg{font-size:15px;line-height:1.6;color:var(--txt);margin-bottom:16px;text-align:center;}
.cf-btns{display:flex;gap:10px;}
.cf-btn{flex:1;padding:11px;border:none;border-radius:10px;font-size:15px;font-weight:600;font-family:inherit;cursor:pointer;}
.cf-no{background:var(--bg2);color:var(--txt2);}
.cf-yes{background:linear-gradient(135deg,var(--bad),var(--warn));color:#fff;}

.next-bar{padding:0 14px 18px;}
.next-bar.hidden{display:none;}

/* ===== 阅读卡 ===== */
.reading-card{margin:auto;width:100%;max-width:480px;padding:24px 22px;overflow-y:auto;}
.reading-head{display:flex;align-items:center;gap:10px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--line);}
.reading-emoji{font-size:32px;}
.reading-head h2{margin:0;font-size:20px;color:var(--gold);}
.reading-body{font-size:14px;line-height:1.7;color:var(--txt);margin-bottom:20px;}
.reading-body h3{color:var(--elec);font-size:15px;margin:16px 0 8px;}
.reading-body p{margin:8px 0;}
.reading-body ul{padding-left:20px;margin:8px 0;}
.reading-body li{margin:4px 0;}
.reading-body .key{color:var(--gold);font-weight:600;}
.reading-body .water{color:var(--water);font-weight:600;}
.reading-body .pos{color:var(--pos);font-weight:600;}
.reading-body .neg{color:var(--neg);font-weight:600;}
.reading-body .analogy-table{width:100%;border-collapse:collapse;margin:10px 0;font-size:12px;}
.reading-body .analogy-table th{background:var(--bg2);color:var(--elec);padding:6px;border:1px solid var(--line);text-align:left;}
.reading-body .analogy-table td{padding:6px;border:1px solid var(--line);}

/* ===== 游戏结束页 ===== */
.grade-display{font-size:72px;font-weight:900;color:var(--bad);text-shadow:0 4px 20px rgba(255,82,82,.5);margin:10px 0;font-family:"Courier New",monospace;}
.eval-msg{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:16px 0;font-size:14px;line-height:1.6;color:var(--txt);text-align:left;}

/* ===== 管理者模式卡片 ===== */
.mode-card.mode-manager{border-color:var(--gold);background:linear-gradient(135deg,var(--card),rgba(255,213,79,.08));}

/* ===== 管理者模式·背题浏览页 ===== */
#screen-manager{padding-bottom:30px;}
.mgr-jumpbar{position:sticky;top:62px;z-index:9;display:flex;gap:6px;overflow-x:auto;padding:8px 12px;background:rgba(13,27,42,.94);border-bottom:1px solid var(--line);-webkit-overflow-scrolling:touch;}
.mgr-jumpbar::-webkit-scrollbar{height:4px;}
.mgr-jumpbar::-webkit-scrollbar-thumb{background:var(--line);border-radius:2px;}
.jump-btn{flex:0 0 auto;width:34px;height:34px;border-radius:8px;background:var(--card);border:1px solid var(--line);color:var(--txt2);font-weight:700;font-size:13px;font-family:"Courier New",monospace;cursor:pointer;transition:all .12s;display:flex;align-items:center;justify-content:center;}
.jump-btn:active{transform:scale(.92);}
.jump-btn.active{background:var(--gold);color:#04121F;border-color:var(--gold);box-shadow:0 2px 8px rgba(255,213,79,.4);}

.mgr-list{padding:10px 12px 24px;display:flex;flex-direction:column;gap:14px;}
.mgr-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;scroll-margin-top:118px;}
.mgr-card-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px;padding-bottom:8px;border-bottom:1px dashed var(--line);}
.mgr-num{font-size:18px;font-weight:800;color:var(--gold);font-family:"Courier New",monospace;}
.mgr-phase{font-size:11px;color:var(--elec);background:rgba(0,229,255,.12);padding:2px 8px;border-radius:8px;letter-spacing:.5px;}
.mgr-ans-badge{margin-left:auto;font-size:12px;font-weight:700;color:var(--good);background:rgba(67,198,120,.18);padding:3px 10px;border-radius:10px;border:1px solid rgba(67,198,120,.4);}
.mgr-briefing{font-size:12px;color:var(--warn);background:rgba(251,140,0,.1);padding:6px 10px;border-radius:8px;margin-bottom:8px;line-height:1.5;}
.mgr-svg{padding:6px 0;display:flex;align-items:center;justify-content:center;}
.mgr-svg svg{width:100%;max-width:340px;height:auto;max-height:240px;}
.mgr-question{font-size:15px;font-weight:600;color:var(--txt);line-height:1.55;padding:8px 0 10px;}
.mgr-opts{display:flex;flex-direction:column;gap:8px;}
.mgr-opt{position:relative;padding:10px 40px 10px 14px;font-size:14px;line-height:1.4;}
.mgr-opt .mgr-opt-text{display:block;padding-right:4px;}
.mgr-opt.disabled{opacity:.7;cursor:default;}
.mgr-opt.disabled:hover{border-color:var(--line);}
.mgr-explain{font-size:12px;color:var(--txt2);line-height:1.55;padding:6px 10px;margin-top:-2px;border-left:3px solid var(--line);background:rgba(13,27,42,.4);border-radius:0 8px 8px 0;}
.mgr-explain-correct{color:var(--good);border-left-color:var(--good);background:rgba(67,198,120,.08);}
.mgr-explain-tag{font-weight:700;}