:root{--bg:#050510;--bg-2:#0a0a1f;--panel:#ffffff0a;--border:#ffffff1a;--text:#e8e8f5;--text-dim:#8a8aa8;--cyan:#22d3ee;--blue:#6366f1;--purple:#a855f7;--green:#22c55e;--pink:#ec4899}*{box-sizing:border-box;margin:0;padding:0}body{background:radial-gradient(ellipse at 20% 10%, #10102e 0%, var(--bg) 60%);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;overflow-x:hidden}.page{flex-direction:column;min-height:100vh;display:flex}.nav{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:50;background:#0a0a1fb3;align-items:center;gap:12px;padding:14px 22px;display:flex;position:sticky;top:0}.nav-brand{letter-spacing:.04em;align-items:center;gap:8px;font-weight:700;display:flex}.nav-brand svg{color:var(--cyan)}.nav-center{flex:1;justify-content:center;display:flex}.nav-right{gap:10px;margin-left:auto;display:flex}.btn{border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;border-radius:12px;outline:none;justify-content:center;align-items:center;gap:8px;padding:10px 18px;font-size:14px;font-weight:600;transition:all .2s;display:inline-flex}.btn:hover{border-color:var(--cyan);transform:translateY(-1px)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:linear-gradient(135deg, var(--cyan), var(--blue));color:#fff;border:none;font-weight:700;box-shadow:0 4px 20px #22d3ee4d}.btn-primary:hover:not(:disabled){box-shadow:0 6px 28px #22d3ee73}.btn-ghost{background:0 0}.btn-lg{padding:13px 26px;font-size:15px}.icon-btn{background:var(--panel);border:1px solid var(--border);width:40px;height:40px;color:var(--text-dim);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;transition:all .2s;display:inline-flex}.icon-btn:hover{color:var(--text);border-color:var(--cyan)}.intro-page{align-items:stretch}.intro-hero{flex:1;justify-content:center;align-items:center;padding:60px 24px 80px;display:flex;position:relative;overflow:hidden}.intro-orbit{border:1px solid #22d3ee26;border-radius:50%;animation:30s linear infinite spin;position:absolute}.o1{width:520px;height:520px;margin:-260px 0 0 -260px;top:50%;left:50%}.o2{border-color:#a855f726;width:360px;height:360px;margin:-180px 0 0 -180px;animation-duration:20s;top:50%;left:50%}.o3{border-color:#22d3ee4d;width:200px;height:200px;margin:-100px 0 0 -100px;animation-duration:12s;top:50%;left:50%}@keyframes spin{to{transform:rotate(360deg)}}.intro-content{text-align:center;z-index:2;max-width:560px;position:relative}.intro-badge{color:var(--cyan);letter-spacing:.18em;background:#22d3ee14;border:1px solid #22d3ee66;border-radius:999px;margin-bottom:28px;padding:6px 14px;font-size:12px;font-weight:700;display:inline-block}.intro-title{letter-spacing:-.03em;background:linear-gradient(135deg, #fff, var(--cyan));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:22px;font-size:clamp(38px,7vw,60px);font-weight:900;line-height:1.15}.intro-desc{color:var(--text-dim);margin-bottom:40px;font-size:16px;line-height:1.8}.intro-form{flex-direction:column;align-items:center;gap:16px;display:flex}.intro-input-wrap{width:100%;max-width:380px;position:relative}.intro-input-icon{color:var(--text-dim);position:absolute;top:50%;left:16px;transform:translateY(-50%)}.intro-input{border:1px solid var(--border);width:100%;color:var(--text);background:#ffffff0d;border-radius:14px;outline:none;padding:15px 16px 15px 46px;font-size:15px;transition:border-color .2s}.intro-input:focus{border-color:var(--cyan);background:#ffffff14}.btn-start{width:100%;max-width:380px}.btn-start .arr{font-size:18px}.intro-rules{color:var(--text-dim);flex-wrap:wrap;justify-content:center;gap:18px;margin-top:40px;font-size:13px;display:flex}.rule{background:var(--panel);border:1px solid var(--border);border-radius:10px;align-items:center;gap:6px;padding:8px 14px;display:flex}.playing-page{height:100vh}.nav-opponent{align-items:center;gap:10px;display:flex}.opp-avatar{border:1px solid var(--border);background:#ffffff14;border-radius:50%;justify-content:center;align-items:center;width:42px;height:42px;display:flex}.opp-avatar.ai{border-color:var(--purple);color:var(--purple);background:#a855f71a}.opp-avatar.human{border-color:var(--green);color:var(--green);background:#22c55e1a}.opp-name{text-align:left;font-weight:700}.match-status{color:var(--text-dim);align-items:center;gap:5px;font-size:12px;display:flex}.dot{background:var(--green);border-radius:50%;width:7px;height:7px;animation:1.5s infinite pulse}@keyframes pulse{0%,to{opacity:1}50%{opacity:.3}}.timer{font-variant-numeric:tabular-nums;background:var(--panel);border:1px solid var(--border);border-radius:8px;margin-left:auto;padding:6px 12px;font-size:15px;font-weight:700}.timer.danger{color:#f87171;border-color:#f8717166}.chat-area{flex-direction:column;flex:1;gap:12px;width:100%;max-width:780px;margin:0 auto;padding:20px 20px 10px;display:flex;overflow-y:auto}.chat-hint{text-align:center;color:var(--text-dim);margin-bottom:8px;padding:8px;font-size:13px}.bubble-row{display:flex}.bubble-row.me{justify-content:flex-end}.bubble-row.opponent{justify-content:flex-start}.bubble{border-radius:16px;max-width:72%;padding:12px 16px;font-size:15px;line-height:1.6;position:relative}.bubble.me{background:linear-gradient(135deg, var(--cyan), var(--blue));color:#fff;border-bottom-right-radius:4px}.bubble.opponent{border:1px solid var(--border);background:#ffffff14;border-bottom-left-radius:4px}.bubble-time{opacity:.6;text-align:right;margin-top:4px;font-size:10px}.bubble.thinking{gap:5px;padding:16px;display:flex}.tdot{background:var(--text-dim);border-radius:50%;width:7px;height:7px;animation:1.2s infinite bounce}.tdot:nth-child(2){animation-delay:.15s}.tdot:nth-child(3){animation-delay:.3s}@keyframes bounce{0%,to{opacity:.4;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}.chat-input-bar{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border);background:#0a0a1fcc;gap:10px;width:100%;max-width:780px;margin:0 auto;padding:14px 20px;display:flex}.chat-input{border:1px solid var(--border);color:var(--text);background:#ffffff0f;border-radius:12px;outline:none;flex:1;padding:13px 18px;font-size:15px}.chat-input:focus{border-color:var(--cyan)}.send-btn{border-radius:12px;padding:12px 18px}.guess-bar{border-top:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0a0a1fcc;justify-content:space-between;align-items:center;gap:14px;width:100%;max-width:780px;margin:0 auto;padding:12px 20px;display:flex}.guess-label{color:var(--text-dim);align-items:center;gap:6px;font-size:14px;font-weight:600;display:flex}.guess-btns{gap:10px;display:flex}.guess-btn.human{color:var(--green);border-color:#22c55e66}.guess-btn.human:hover{border-color:var(--green);background:#22c55e1f}.guess-btn.ai{color:var(--pink);border-color:#ec489966}.guess-btn.ai:hover{border-color:var(--pink);background:#ec48991f}.result-wrap{flex:1;justify-content:center;align-items:center;padding:40px 20px;display:flex}.result-card{text-align:center;background:var(--panel);border:1px solid var(--border);border-radius:24px;width:100%;max-width:420px;padding:48px 40px;box-shadow:0 20px 60px #0006}.result-card.win{border-color:#22c55e80}.result-card.lose{border-color:#ec489966}.result-icon{margin-bottom:16px;font-size:60px}.result-card h1{margin-bottom:12px;font-size:30px;font-weight:900}.result-sub{color:var(--text-dim);font-size:15px;line-height:1.8}.result-sub strong{color:var(--text)}.result-stats{justify-content:center;gap:20px;margin:28px 0;display:flex}.stat{border:1px solid var(--border);background:#ffffff0d;border-radius:16px;flex-direction:column;align-items:center;padding:16px 24px;display:flex}.stat-num{color:var(--cyan);font-size:26px;font-weight:900}.stat-label{color:var(--text-dim);margin-top:4px;font-size:12px}.result-tip{color:var(--text-dim);margin-bottom:20px;font-size:13px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:#ffffff26;border-radius:3px}::-webkit-scrollbar-track{background:0 0}