:root{
  --bg:#070a0f;--panel:#0d131d;--panel2:#111923;--line:#223148;--text:#f7f9fc;--muted:#95a3b8;
  --gold:#ffc700;--red:#ee1d2d;--green:#35e4a7;--cyan:#16d9f3;--warn:#ffb020;--radius:18px;
}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:radial-gradient(circle at 80% 0,rgba(255,199,0,.06),transparent 30%),var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit}.arv2-top{position:sticky;top:0;z-index:50;display:flex;align-items:center;gap:22px;padding:12px clamp(14px,3vw,34px);background:rgba(7,10,15,.96);border-bottom:1px solid rgba(255,255,255,.1);backdrop-filter:blur(16px)}
.arv2-brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:230px}.arv2-brand img{width:58px;height:42px;object-fit:contain}.arv2-brand span{display:grid}.arv2-brand b{letter-spacing:.15em;font-size:.82rem}.arv2-brand small{color:var(--muted);font-size:.65rem;letter-spacing:.08em}
.arv2-nav{display:flex;align-items:center;gap:6px;flex:1}.arv2-nav a{padding:10px 12px;border-radius:10px;text-decoration:none;color:var(--muted);font-weight:800;font-size:.86rem}.arv2-nav a:hover,.arv2-nav a.on{background:#151d28;color:#fff}
.arv2-top-actions{display:flex;align-items:center;gap:9px}.arv2-lang-label{display:flex;align-items:center;gap:6px;color:var(--muted);font-size:.75rem}.arv2-lang-label select{background:#101824;color:#fff;border:1px solid var(--line);border-radius:10px;padding:8px}.arv2-coins{background:#151d28;border:1px solid var(--line);border-radius:999px;padding:8px 11px;font-weight:900;color:var(--gold)}
.arv2-wrap{width:min(1220px,calc(100% - 28px));margin:26px auto 70px}.arv2-hero{display:grid;grid-template-columns:1.35fr .65fr;gap:22px;padding:clamp(24px,4vw,48px);border:1px solid rgba(255,199,0,.25);border-radius:26px;background:linear-gradient(145deg,#101722,#080b11);box-shadow:0 24px 70px rgba(0,0,0,.35)}
.arv2-kicker{color:var(--cyan);font-size:.72rem;font-weight:950;letter-spacing:.13em;text-transform:uppercase}.arv2-hero h1{font-size:clamp(2rem,5vw,4.2rem);line-height:1.04;margin:10px 0 14px}.arv2-hero h1 em{font-style:normal;color:var(--gold)}.arv2-hero p{color:var(--muted);line-height:1.65;max-width:780px}
.arv2-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}.arv2-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:11px;padding:12px 16px;background:#131c28;color:#fff;text-decoration:none;font-weight:900;cursor:pointer}.arv2-btn:hover{transform:translateY(-1px);border-color:#526b91}.arv2-btn.gold{background:var(--gold);border-color:var(--gold);color:#15120a}.arv2-btn.red{background:var(--red);border-color:var(--red)}.arv2-btn.green{background:var(--green);border-color:var(--green);color:#041a12}.arv2-btn.ghost{background:transparent}.arv2-btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.arv2-hero-side{display:grid;gap:10px}.arv2-stat{padding:16px;border:1px solid var(--line);background:#0c1420;border-radius:16px}.arv2-stat small{display:block;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}.arv2-stat strong{display:block;margin-top:8px;font-size:1.65rem}
.arv2-section{margin-top:28px}.arv2-section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.arv2-section h2{margin:0;font-size:1.55rem}.arv2-section-head p{margin:4px 0 0;color:var(--muted)}
.arv2-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.arv2-card{background:linear-gradient(145deg,#101722,#0b1018);border:1px solid var(--line);border-radius:var(--radius);padding:19px;min-width:0}.arv2-card:hover{border-color:#3c5375}.arv2-card h3{margin:8px 0;font-size:1.05rem}.arv2-card p{color:var(--muted);line-height:1.5;font-size:.9rem}.arv2-chip{display:inline-flex;align-items:center;border-radius:999px;padding:5px 8px;background:#172131;border:1px solid var(--line);color:var(--muted);font-size:.68rem;font-weight:900;letter-spacing:.05em}.arv2-chip.gold{color:var(--gold);border-color:rgba(255,199,0,.3)}.arv2-chip.green{color:var(--green);border-color:rgba(53,228,167,.3)}.arv2-chip.red{color:#ff7580;border-color:rgba(238,29,45,.4)}
.arv2-progress{height:8px;background:#07101b;border-radius:99px;overflow:hidden;margin:13px 0}.arv2-progress i{display:block;height:100%;background:linear-gradient(90deg,var(--cyan),var(--green));border-radius:inherit}
.arv2-modes{display:flex;gap:7px;flex-wrap:wrap}.arv2-modes a{font-size:.75rem;padding:8px 9px}
.arv2-panel{background:#0d141e;border:1px solid var(--line);border-radius:20px;padding:clamp(18px,3vw,30px);margin-top:20px}.arv2-panel h1,.arv2-panel h2{margin-top:0}.arv2-list{display:grid;gap:10px;padding:0;list-style:none}.arv2-list li{padding:13px 15px;border:1px solid var(--line);border-radius:12px;background:#101823;line-height:1.5}
.arv2-question{width:min(860px,100%);margin:0 auto}.arv2-question-title{font-size:clamp(1.25rem,3vw,2rem);line-height:1.35;margin:15px 0 22px}.arv2-options{display:grid;gap:10px}.arv2-option{display:flex;gap:13px;align-items:flex-start;padding:15px;border:1px solid var(--line);border-radius:12px;background:#101720;cursor:pointer}.arv2-option:hover{border-color:#526b91}.arv2-option input{margin-top:3px}.arv2-option b{display:grid;place-items:center;width:24px;height:24px;border-radius:8px;background:#182333;color:var(--muted);flex:0 0 auto}.arv2-option.correct{border-color:var(--green);background:rgba(53,228,167,.08)}.arv2-option.wrong{border-color:var(--red);background:rgba(238,29,45,.08)}
.arv2-explanation{margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:14px;background:#0d141d}.arv2-explanation.good{border-color:rgba(53,228,167,.45)}.arv2-explanation.bad{border-color:rgba(238,29,45,.5)}.arv2-source{color:var(--muted);font-size:.8rem}
.arv2-exam-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.arv2-timer{font-variant-numeric:tabular-nums;font-weight:950;color:var(--gold)}.arv2-timer.expired{color:#ff6672}.arv2-meter{height:5px;background:#111c29;overflow:hidden;border-radius:99px}.arv2-meter i{display:block;height:100%;background:var(--red)}
.arv2-table-wrap{overflow:auto}.arv2-table{width:100%;border-collapse:collapse}.arv2-table th,.arv2-table td{padding:11px;border-bottom:1px solid var(--line);text-align:left;font-size:.84rem}.arv2-table th{color:var(--muted);text-transform:uppercase;font-size:.68rem;letter-spacing:.06em}
.arv2-form{display:grid;gap:13px}.arv2-form label{display:grid;gap:6px;color:var(--muted);font-size:.8rem;font-weight:800}.arv2-form input,.arv2-form textarea,.arv2-form select{width:100%;background:#07101a;color:#fff;border:1px solid var(--line);border-radius:10px;padding:11px;font:inherit}.arv2-form textarea{min-height:110px;resize:vertical}.arv2-two{display:grid;grid-template-columns:1fr 1fr;gap:13px}
.arv2-alert{padding:13px 15px;border:1px solid rgba(255,176,32,.4);background:rgba(255,176,32,.08);border-radius:12px;color:#ffe2a0}.arv2-alert.bad{border-color:rgba(238,29,45,.5);background:rgba(238,29,45,.08);color:#ffc1c6}.arv2-alert.ok{border-color:rgba(53,228,167,.4);background:rgba(53,228,167,.08);color:#b7ffe5}
.arv2-footer{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;padding:24px;border-top:1px solid rgba(255,255,255,.08);color:var(--muted);font-size:.78rem}.arv2-footer a{text-decoration:none}
.arv2-toast{position:fixed;right:16px;bottom:18px;z-index:200;max-width:420px;padding:13px 16px;border-radius:12px;background:#152134;border:1px solid #375173;box-shadow:0 14px 40px #0008;opacity:0;transform:translateY(15px);pointer-events:none;transition:.2s}.arv2-toast.show{opacity:1;transform:none}
.arv2-translation-gate{display:none;position:fixed;inset:0;z-index:500;background:#070a0f;align-items:center;justify-content:center;flex-direction:column;gap:14px}.arv2-needs-translation .arv2-translation-gate{display:flex}.arv2-spinner{width:38px;height:38px;border:4px solid #25334a;border-top-color:var(--gold);border-radius:50%;animation:arv2spin .8s linear infinite}@keyframes arv2spin{to{transform:rotate(360deg)}}
.arv2-voice-status{display:flex;gap:7px;flex-wrap:wrap;margin-top:8px}.arv2-voice-pill{font-size:.72rem;padding:7px 9px;border:1px solid var(--line);border-radius:999px;color:var(--muted)}.arv2-voice-pill.available{color:var(--green);border-color:rgba(53,228,167,.4)}
.arv2-coach{margin-top:15px}.arv2-coach-output{white-space:pre-wrap;line-height:1.6;margin-top:12px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#09111b;min-height:60px}
@media(max-width:900px){.arv2-top{flex-wrap:wrap}.arv2-brand{min-width:0}.arv2-nav{order:3;width:100%;overflow:auto}.arv2-hero{grid-template-columns:1fr}.arv2-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.arv2-wrap{width:min(100% - 18px,1220px);margin-top:12px}.arv2-top{padding:9px}.arv2-brand span small{display:none}.arv2-brand img{width:44px}.arv2-top-actions{margin-left:auto}.arv2-lang-label span{display:none}.arv2-nav a{padding:8px;font-size:.75rem}.arv2-grid,.arv2-two{grid-template-columns:1fr}.arv2-card{padding:15px}.arv2-hero{padding:22px;border-radius:18px}.arv2-actions .arv2-btn{flex:1 1 auto}.arv2-exam-top{align-items:flex-start;flex-direction:column}}