@import"https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700;900&family=DM+Sans:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap";*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d0f14;--surface: #13161f;--card: #181c27;--border: #252a38;--accent: #f5a623;--accent2: #e8855a;--blue: #4f8ef7;--green: #3ecf8e;--red: #f56565;--text: #e8eaf0;--muted: #7a8094;--serif: "Playfair Display", serif;--sans: "DM Sans", sans-serif;--mono: "JetBrains Mono", monospace;--radius: 12px}body{background:var(--bg);color:var(--text);font-family:var(--sans);min-height:100vh;overflow-x:hidden}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}@keyframes fadeUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:none}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes 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var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:all .25s ease}.course-card:hover{border-color:#f5a62366;transform:translateY(-3px);box-shadow:0 12px 40px #00000080}.course-thumb{height:140px;display:flex;align-items:center;justify-content:center;font-size:48px;position:relative}.course-body{padding:16px}.course-title{font-family:var(--serif);font-size:16px;font-weight:600;margin-bottom:6px;line-height:1.3}.course-meta{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);margin-bottom:12px}.course-price{font-family:var(--mono);font-size:18px;font-weight:500;color:var(--accent)}.course-old{font-family:var(--mono);font-size:13px;color:var(--muted);text-decoration:line-through;margin-left:6px}.video-main{background:#000;border-radius:var(--radius);aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;border:1px solid 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#00000080;position:relative}.auth-title{font-family:var(--serif);font-size:30px;font-weight:700;margin-bottom:4px}.auth-sub{color:var(--muted);font-size:14px;margin-bottom:28px}.auth-form{display:flex;flex-direction:column;gap:16px}.auth-tabs{display:flex;gap:0;background:var(--bg);border-radius:8px;padding:4px;margin-bottom:24px}.auth-tab{flex:1;padding:8px;text-align:center;font-size:14px;font-weight:600;border-radius:6px;cursor:pointer;color:var(--muted);transition:all .2s;border:none;background:none;font-family:var(--sans)}.auth-tab.active{background:var(--card);color:var(--text)}.strength-bar{display:flex;gap:4px;margin-top:4px}.strength-seg{flex:1;height:3px;border-radius:2px;background:var(--border);transition:background .3s}.strength-seg.weak{background:var(--red)}.strength-seg.medium{background:var(--accent)}.strength-seg.strong{background:var(--green)}.role-picker{display:flex;gap:8px}.role-opt{flex:1;border:1px solid var(--border);border-radius:8px;padding:12px;text-align:center;cursor:pointer;font-size:13px;font-weight:600;transition:all .2s;font-family:var(--sans);color:var(--text)}.role-opt:hover{border-color:var(--accent)}.role-opt.active{background:#f5a6231f;border-color:var(--accent);color:var(--accent)}.role-icon{font-size:24px;display:block;margin-bottom:4px}.chat-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;height:320px}.chat-messages{flex:1;overflow-y:auto;padding:14px;display:flex;flex-direction:column;gap:10px}.chat-msg{display:flex;gap:8px;align-items:flex-start}.chat-msg.own{flex-direction:row-reverse}.chat-bubble{background:var(--card);border-radius:10px;padding:8px 12px;font-size:13px;max-width:75%}.chat-msg.own .chat-bubble{background:#f5a62326}.chat-who{font-size:11px;color:var(--muted);margin-bottom:2px}.chat-input{border-top:1px solid var(--border);padding:10px;display:flex;gap:8px}.chat-input 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