:root{
  --bg:#fff7ef;
  --panel:#ffffff;
  --panel2:#fffaf2;
  --ink:#243f5c;
  --muted:#647f99;
  --line:#e5eef8;
  --primary:#ff8e63;
  --primary2:#ffb95f;
  --blue:#6ec6ff;
  --blue2:#dff5ff;
  --green:#86d36b;
  --green2:#efffe8;
  --yellow:#ffd86f;
  --purple:#a690ff;
  --red:#f08b8b;
  --shadow:0 16px 34px rgba(36,63,92,.12);
  --radius:28px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;min-height:100%}
html{scroll-behavior:smooth}
body{
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background:linear-gradient(180deg,#fff8ef 0%,#fff4dc 50%,#eaf8ff 100%);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  touch-action:manipulation;
}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
a{color:inherit}
.app{max-width:1440px;margin:0 auto;padding:18px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  position:sticky;top:10px;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);
  border:1px solid rgba(229,238,248,.9);border-radius:30px;padding:12px 14px;box-shadow:var(--shadow);
}
.brand{display:flex;align-items:center;gap:12px;min-width:240px}
.brand img{width:64px;height:64px}
.brand-title{font-weight:950;font-size:1.55rem;line-height:1;color:var(--ink)}
.brand-sub{font-size:.92rem;color:var(--muted);margin-top:3px}
.top-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.btn,.nav-btn,.module-btn,.option,.word,.memory-card,.avatar-btn,.small-btn{
  border:0;border-radius:18px;font-weight:850;color:var(--ink);
  transition:transform .15s ease, box-shadow .15s ease, background .15s ease, border-color .15s ease;
  -webkit-tap-highlight-color:transparent;
}
.btn:hover,.nav-btn:hover,.module-btn:hover,.option:hover,.word:hover,.memory-card:hover,.avatar-btn:hover,.small-btn:hover{transform:translateY(-2px)}
.btn{padding:12px 16px;background:#f3f8ff;box-shadow:0 6px 16px rgba(36,63,92,.08)}
.btn.primary{background:linear-gradient(135deg,var(--primary2),var(--primary));color:white}
.btn.blue{background:linear-gradient(135deg,#9be1ff,var(--blue));color:#124863}
.btn.green{background:linear-gradient(135deg,#a8e58b,var(--green));color:#214d19}
.btn.yellow{background:linear-gradient(135deg,#ffe995,var(--yellow));color:#614812}
.btn.purple{background:linear-gradient(135deg,#cdbfff,var(--purple));color:#372c81}
.btn.danger{background:#fff0f0;color:#8a3030}
.layout{display:grid;grid-template-columns:310px 1fr;gap:18px;margin-top:18px;align-items:start}
.sidebar{position:sticky;top:110px;display:flex;flex-direction:column;gap:14px}
.side-card,.card{background:var(--panel);border-radius:var(--radius);box-shadow:var(--shadow);border:1px solid rgba(229,238,248,.9)}
.side-card{padding:16px}
.profile{background:linear-gradient(180deg,#fff,#fff8ec)}
.profile-row{display:flex;align-items:center;gap:12px}
.avatar{width:58px;height:58px;border-radius:20px;display:grid;place-items:center;font-size:31px;background:linear-gradient(135deg,var(--primary2),var(--primary));box-shadow:0 10px 18px rgba(255,142,99,.25)}
.tiny{font-size:.84rem;color:var(--muted);font-weight:750}
.player{font-size:1.15rem;font-weight:950}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:12px}
.stat{background:#f6faff;border-radius:16px;padding:10px 12px;font-weight:900;color:#4d6b85}
.nav{display:flex;flex-direction:column;gap:8px}
.nav-btn{padding:13px 14px;background:#f7fbff;text-align:left;border:2px solid transparent}
.nav-btn.active{background:linear-gradient(135deg,#eaf8ff,#fff8ef);border-color:#d8edf8}
.side-img{width:124px;margin:0 auto 8px}
.main{min-height:70vh}
.card{padding:24px;margin-bottom:18px}
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:20px;align-items:center;background:linear-gradient(180deg,#fff,#fff8ed)}
.hero h1{font-size:clamp(2rem,4vw,3.4rem);line-height:.98;margin:0 0 12px;font-weight:1000;letter-spacing:-.03em}
.hero p,.muted{color:var(--muted);line-height:1.6}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.space{justify-content:space-between}
h2,h3{margin:0 0 10px}
h2{font-size:2rem;letter-spacing:-.02em}
h3{font-size:1.35rem}
.world{position:relative;overflow:hidden}
.world-map{border-radius:26px;overflow:hidden;border:3px solid #fff}
.level-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin-top:14px}
.level-card{background:#fbfdff;border:2px solid var(--line);border-radius:22px;padding:14px}
.level-card.locked{opacity:.55;filter:grayscale(.2)}
.level-title{font-weight:950}
.level-desc{color:var(--muted);font-size:.94rem;line-height:1.45;margin-top:3px}
.progress-line{height:12px;border-radius:999px;background:#eef4fb;overflow:hidden;margin:12px 0}
.progress-line > div{height:100%;background:linear-gradient(90deg,var(--blue),var(--green));transition:width .3s ease}
.module-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px}
.module-card{border:2px solid var(--line);border-radius:26px;background:linear-gradient(180deg,#fff,#fbfdff);padding:16px;display:flex;flex-direction:column;justify-content:space-between;min-height:292px}
.module-card img{width:120px;height:96px;object-fit:contain;margin-bottom:8px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin:10px 0}
.tag{display:inline-flex;background:#f2f8ff;color:#57758d;font-weight:850;border-radius:999px;padding:7px 10px;font-size:.86rem}
.task-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.task-card{background:linear-gradient(180deg,#fffdf8,#fff7ec);border:2px solid #ffe5bf}
.question{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:1000;letter-spacing:-.02em;margin:0 0 8px}
.help{color:var(--muted);line-height:1.6;font-size:1.05rem}
.option-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:13px;margin:18px 0}
.option{min-height:98px;background:#fff;border:3px solid var(--line);box-shadow:0 7px 18px rgba(36,63,92,.08);font-size:1.75rem;padding:15px;display:grid;place-items:center;text-align:center}
.option.big{font-size:4rem}
.option.text{font-size:1.2rem;line-height:1.3}
.option.correct,.word.correct,.memory-card.correct{border-color:#9ddd82;background:var(--green2)}
.option.wrong,.word.wrong,.memory-card.wrong{border-color:#f1aaa9;background:#fff1f1}
.mirror0{transform:none}.mirror1{transform:scaleX(-1)}.mirror2{transform:rotate(180deg)}.mirror3{transform:scaleX(-1) rotate(180deg)}
.builder,.word-bank{display:flex;flex-wrap:wrap;gap:10px;min-height:82px;align-items:flex-start}
.builder{background:#f8fbff;border:3px dashed #d8e8f7;border-radius:24px;padding:14px;margin:8px 0 14px}
.word{padding:13px 16px;background:#fff;border:3px solid var(--line);box-shadow:0 7px 18px rgba(36,63,92,.06)}
.copy-model{background:#fff;border:3px solid var(--line);border-radius:22px;padding:16px 18px;font-size:1.45rem;font-weight:950;letter-spacing:.02em;margin:10px 0}
textarea,input[type=text]{width:100%;border:3px solid #dfeaf6;border-radius:20px;padding:14px 16px;background:#fff;color:var(--ink);outline:none}
textarea{min-height:110px;resize:vertical}
.feedback{display:none;margin-top:14px;padding:14px 16px;border-radius:20px;font-weight:850;line-height:1.5}
.feedback.show{display:block}
.feedback.good{background:#efffe8;border:2px solid #bee8ae;color:#276019}
.feedback.note{background:#fff8e7;border:2px solid #f0d68a;color:#795c08}
.tip{margin-top:14px;border-left:7px solid var(--blue);background:#f4fbff;border-radius:18px;padding:14px 16px;line-height:1.55;color:#3f5b74}
.memory-grid{display:grid;grid-template-columns:repeat(4,minmax(70px,1fr));gap:12px;margin:18px 0}
.memory-card{aspect-ratio:1/1;background:#fff;border:3px solid var(--line);box-shadow:0 7px 18px rgba(36,63,92,.08);display:grid;place-items:center;font-size:2.5rem}
.memory-card.hidden-face{background:linear-gradient(135deg,#e9f7ff,#fff6dd);color:transparent}
.memory-card.matched{border-color:#a7df8f;background:#efffe8;color:var(--ink)}
.path-zone{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:18px 0}
.path-cell{min-height:70px;border:3px solid var(--line);border-radius:20px;background:#fff;display:grid;place-items:center;font-size:2rem;font-weight:950}
.path-cell.selected{background:#eaf8ff;border-color:var(--blue)}
.path-cell.target{background:#fff7dc;border-color:var(--yellow)}
.dashboard-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.metric{background:#f8fbff;border:2px solid var(--line);border-radius:22px;padding:16px}
.metric-value{font-size:2rem;font-weight:1000}
.table-wrap{overflow:auto;border:2px solid var(--line);border-radius:22px}
table{width:100%;border-collapse:collapse;background:#fff}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line)}
th{background:#f6faff;font-weight:950}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px}
.badge{display:inline-flex;align-items:center;gap:8px;border:2px solid #ffe18a;background:#fff9e1;border-radius:999px;padding:10px 14px;font-weight:900}
.certificate{background:#fffef8;border:10px solid #ffe49a;border-radius:34px;padding:28px;position:relative;overflow:hidden}
.certificate:before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:rgba(255,216,111,.25);top:-90px;right:-70px}
.cert-inner{position:relative;z-index:1;text-align:center}
.cert-title{font-size:2.5rem;font-weight:1000;letter-spacing:-.02em}
.cert-name{font-size:2.1rem;font-weight:1000;margin:12px 0}
.avatar-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(88px,1fr));gap:10px}
.avatar-btn{background:#fff;border:3px solid var(--line);font-size:2rem;padding:14px}
.avatar-btn.selected{border-color:var(--yellow);background:#fff7dd}
.fullscreen-hint{display:none}
.install-card{background:linear-gradient(180deg,#fff,#f7fbff)}
.recommendation{background:#fff9e9;border:2px solid #f0d68a;border-radius:22px;padding:14px 16px;line-height:1.6}
.canvas-wrap{background:#fff;border:3px solid var(--line);border-radius:24px;padding:12px;margin-top:12px}
canvas{width:100%;height:220px;border-radius:18px;background:#fffdf8;touch-action:none}
.footer-note{font-size:.94rem;color:var(--muted);line-height:1.55}
@media (display-mode: standalone){.fullscreen-hint{display:block}}
@media (max-width:1100px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static;top:auto}
}
@media (max-width:820px){
  .app{padding:10px}
  .topbar{top:6px;border-radius:22px}
  .brand img{width:54px;height:54px}
  .brand-title{font-size:1.25rem}
  .brand-sub{display:none}
  .hero{grid-template-columns:1fr}
  .card{padding:18px;border-radius:24px}
  .sidebar{gap:10px}
  .memory-grid{grid-template-columns:repeat(3,minmax(70px,1fr))}
  .path-zone{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:540px){
  .top-actions .btn{padding:10px 12px;font-size:.9rem}
  .stat-grid{grid-template-columns:1fr 1fr}
  .option-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .option.big{font-size:3.3rem}
  .memory-grid{gap:9px}
  h2{font-size:1.55rem}
}
@media print{
  body{background:#fff}
  .topbar,.sidebar,.btn.no-print,.row.no-print,.nav,.install-card,.not-print{display:none!important}
  .app{max-width:none;padding:0}
  .layout{display:block}
  .card{box-shadow:none;border:0;margin:0;padding:0}
  .certificate{border:8px solid #888;box-shadow:none;margin:0;padding:32px}
  .main{min-height:auto}
}