.tb-lang{--paper:#F4EFE3;--paper-2:#FBF8F0;--ink:#173A37;--ink-soft:#3C605B;--coral:#E0603C;--coral-deep:#C24A2C;--gold:#C2933A;--line:rgba(23,58,55,.18);--line-strong:rgba(23,58,55,.4);--shadow:0 18px 40px -22px rgba(23,58,55,.45)}.tb-lang{font-family:Noto Sans TC,system-ui,sans-serif;color:#173a37;background:radial-gradient(120% 60% at 100% 0%,rgba(224,96,60,.06),transparent 60%),radial-gradient(100% 50% at 0% 100%,rgba(194,147,58,.07),transparent 55%),var(--paper);line-height:1.85;-webkit-font-smoothing:antialiased;padding:0 20px 90px;overflow-x:hidden}.tb-lang .wrap{max-width:760px;margin:0 auto}.tb-lang .hero{padding:64px 0 28px;position:relative}.tb-lang .eyebrow{font-family:Space Mono,monospace;letter-spacing:.22em;font-size:12px;text-transform:uppercase;color:#c24a2c;display:flex;align-items:center;gap:10px}.tb-lang .eyebrow:before{content:"";width:26px;height:1px;background:#e0603c}.tb-lang h1{font-family:"Noto Serif TC",serif;font-weight:900;font-size:clamp(30px,6.2vw,50px);line-height:1.25;margin:18px 0 0;letter-spacing:-.01em;color:#173a37}.tb-lang h1 .hl{color:#c24a2c;position:relative;white-space:nowrap}.tb-lang .lede{font-size:18px;color:#3c605b;margin:22px 0 0;max-width:60ch}.tb-lang .pass{margin:38px 0 8px;background:var(--paper-2);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);position:relative;overflow:hidden}.tb-lang .pass:after{content:"";position:absolute;top:0;bottom:0;left:74%;width:1px;background-image:linear-gradient(var(--line-strong) 55%,transparent 0);background-size:1px 9px;background-repeat:repeat-y}.tb-lang .pass-notch{position:absolute;width:18px;height:18px;border-radius:50%;background:var(--paper);left:calc(74% - 9px)}.tb-lang .pass-notch.t{top:-9px}.tb-lang .pass-notch.b{bottom:-9px}.tb-lang .pass-row{display:flex}.tb-lang .pass-main{flex:0 0 74%;padding:22px 26px;display:grid;grid-template-columns:1fr 1fr;gap:18px 14px}.tb-lang .pass-stub{flex:1;padding:22px 18px;display:flex;flex-direction:column;justify-content:center;gap:6px}.tb-lang .pf-k{font-family:Space Mono,monospace;font-size:10px;letter-spacing:.16em;color:#3c605b;text-transform:uppercase}.tb-lang .pf-v{font-family:"Noto Serif TC",serif;font-weight:700;font-size:19px;margin-top:2px;color:#173a37}.tb-lang .pf-v.route{display:flex;align-items:center;gap:8px}.tb-lang .pf-v.route span.dots{flex:1;border-top:2px dotted var(--line-strong);height:1px;margin-top:9px}.tb-lang .stamp{align-self:flex-end;border:2px solid #E0603C;color:#c24a2c;font-family:Space Mono,monospace;font-weight:700;font-size:11px;letter-spacing:.12em;padding:6px 9px;border-radius:6px;transform:rotate(-7deg);opacity:.85;line-height:1.3;text-align:center}.tb-lang .sec-head{margin:54px 0 26px;text-align:center}.tb-lang .sec-head .kbar{font-family:Space Mono,monospace;font-size:12px;letter-spacing:.2em;color:#c24a2c;text-transform:uppercase}.tb-lang .sec-head h2{font-family:"Noto Serif TC",serif;font-weight:900;font-size:clamp(24px,4.8vw,33px);margin:10px 0 0;color:#173a37}.tb-lang .sec-head p{color:#3c605b;margin:10px auto 0;max-width:48ch}.tb-lang .card{background:var(--paper-2);border:1px solid var(--line);border-radius:16px;padding:26px 26px 24px;margin:0 0 22px;box-shadow:var(--shadow)}.tb-lang .tool{background:linear-gradient(180deg,#16332f,#173a37);color:#efeadc;border-radius:20px;padding:26px 22px 22px;box-shadow:var(--shadow);overflow:hidden}.tb-lang .tool .field{margin-bottom:16px}.tb-lang .tool .field>label{display:block;font-family:Space Mono,monospace;font-size:11px;letter-spacing:.12em;color:#c2933a;text-transform:uppercase;margin-bottom:8px}.tb-lang .tool select{appearance:none;width:100%;background:#0f2623 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath fill='%23C2933A' d='M1 1l5 5 5-5'/%3E%3C/svg%3E") no-repeat right 16px center;color:#efeadc;border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:13px 38px 13px 14px;font-size:15px;font-family:inherit;cursor:pointer}.tb-lang .tool select:focus{outline:2px solid #C2933A;outline-offset:1px}.tb-lang .tool .grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.tb-lang .tool .seg{display:flex;gap:8px;flex-wrap:wrap}.tb-lang .tool .seg .opt{flex:1;min-width:92px}.tb-lang .tool .seg input{position:absolute;opacity:0;pointer-events:none}.tb-lang .tool .seg label{display:block;text-align:center;border:1px solid rgba(255,255,255,.16);border-radius:10px;padding:11px 6px;font-size:14px;cursor:pointer;transition:.16s;color:#d9d6c7;background:#ffffff05}.tb-lang .tool .seg input:checked+label{background:var(--coral);border-color:var(--coral);color:#fff;font-weight:500}.tb-lang .tool .seg input:focus-visible+label{outline:2px solid var(--gold);outline-offset:2px}.tb-lang .tool .startbtn{width:100%;margin-top:8px;background:var(--coral);color:#fff;border:none;border-radius:12px;padding:16px;font-family:"Noto Serif TC",serif;font-weight:700;font-size:18px;cursor:pointer;transition:.18s;box-shadow:0 10px 24px -10px #e0603cb3}.tb-lang .tool .startbtn:hover{background:var(--coral-deep)}.tb-lang .tool .hint{text-align:center;font-size:12.5px;color:#9fa292;margin-top:12px}.tb-lang .tool .chat{display:none}.tb-lang .tool .chat.on{display:block}.tb-lang .tool .chathead{display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px dashed rgba(255,255,255,.18);padding-bottom:13px;margin-bottom:14px}.tb-lang .tool .chathead .ti{font-family:"Noto Serif TC",serif;font-weight:700;font-size:16px;color:#fff}.tb-lang .tool .chathead .ti small{display:block;font-family:Space Mono,monospace;font-size:11px;color:var(--gold);font-weight:400;letter-spacing:.08em;margin-top:2px}.tb-lang .tool .resetbtn{background:#ffffff14;color:#ebe7da;border:1px solid rgba(255,255,255,.2);border-radius:9px;font-family:Space Mono,monospace;font-size:11px;padding:8px 12px;cursor:pointer;transition:.16s;white-space:nowrap}.tb-lang .tool .resetbtn:hover{background:var(--coral);border-color:var(--coral)}.tb-lang .tool .log{max-height:440px;overflow-y:auto;padding:4px 4px 2px;display:flex;flex-direction:column;gap:12px}.tb-lang .tool .msg{max-width:86%;padding:11px 14px;border-radius:14px;font-size:15px;line-height:1.7;white-space:pre-wrap;word-break:break-word}.tb-lang .tool .msg.ai{align-self:flex-start;background:#ffffff12;border:1px solid rgba(255,255,255,.1);border-bottom-left-radius:4px;display:flex;flex-direction:column;gap:8px;white-space:normal}.tb-lang .tool .msg-body{white-space:pre-wrap;word-break:break-word}.tb-lang .tool .speakbtn{align-self:flex-start;background:none;border:1px solid rgba(255,255,255,.18);border-radius:20px;color:#ffffff8c;font-family:Space Mono,monospace;font-size:11px;letter-spacing:.04em;padding:4px 10px;cursor:pointer;transition:.15s;white-space:nowrap}.tb-lang .tool .speakbtn:hover{color:var(--gold);border-color:var(--gold)}.tb-lang .tool .speakbtn.speaking{color:var(--coral);border-color:var(--coral)}.tb-lang .tool .msg.user{align-self:flex-end;background:var(--coral);color:#fff;border-bottom-right-radius:4px}.tb-lang .tool .msg.err{align-self:center;background:#e0603c29;border:1px solid var(--coral);color:#fbd9ce;font-size:13.5px;text-align:center;max-width:100%}.tb-lang .tool .typing{align-self:flex-start;display:flex;gap:5px;padding:13px 16px}.tb-lang .tool .typing span{width:7px;height:7px;border-radius:50%;background:var(--gold);opacity:.5;animation:tb-b 1s infinite}.tb-lang .tool .typing span:nth-child(2){animation-delay:.18s}.tb-lang .tool .typing span:nth-child(3){animation-delay:.36s}@keyframes tb-b{0%,60%,to{transform:translateY(0);opacity:.4}30%{transform:translateY(-5px);opacity:1}}.tb-lang .tool .inrow{display:flex;gap:9px;margin-top:14px;border-top:1px dashed rgba(255,255,255,.18);padding-top:14px}.tb-lang .tool .inrow textarea{flex:1;resize:none;background:#0f2623;color:#efeadc;border:1px solid rgba(255,255,255,.16);border-radius:12px;padding:12px 14px;font-size:15px;font-family:inherit;line-height:1.6;max-height:120px}.tb-lang .tool .inrow textarea:focus{outline:2px solid var(--gold);outline-offset:1px}.tb-lang .tool .micbtn{flex:none;align-self:flex-end;background:#ffffff14;color:#ebe7da;border:1px solid rgba(255,255,255,.2);border-radius:12px;width:48px;height:48px;font-size:20px;cursor:pointer;transition:.16s}.tb-lang .tool .micbtn:hover{background:#ffffff26}.tb-lang .tool .micbtn.recording{background:#e0603c;border-color:#e0603c;animation:tb-pulse .8s infinite}@keyframes tb-pulse{0%,to{opacity:1}50%{opacity:.6}}.tb-lang .tool .sendbtn{flex:none;align-self:flex-end;background:var(--coral);color:#fff;border:none;border-radius:12px;width:54px;height:48px;font-size:20px;cursor:pointer;transition:.16s}.tb-lang .tool .sendbtn:hover{background:var(--coral-deep)}.tb-lang .tool .sendbtn:disabled{opacity:.45;cursor:not-allowed}.tb-lang .sched{margin-top:14px}.tb-lang .day{display:flex;gap:16px;padding:14px 0;border-bottom:1px dashed var(--line)}.tb-lang .day:last-child{border-bottom:none}.tb-lang .day .d{flex:none;width:60px;font-family:Space Mono,monospace;font-weight:700;color:#c24a2c;font-size:13px;padding-top:2px}.tb-lang .day .t{font-size:15.5px;color:#3c605b}.tb-lang .outro{margin-top:46px;text-align:center;background:var(--paper-2);border:1px solid var(--line);border-radius:18px;padding:34px 26px;box-shadow:var(--shadow)}.tb-lang .outro .bears{font-size:30px;letter-spacing:4px;color:#173a37}.tb-lang .outro h3{font-family:"Noto Serif TC",serif;font-weight:900;font-size:22px;margin:8px 0 10px;color:#173a37}.tb-lang .outro p{color:#3c605b;font-size:16px;margin:0 auto;max-width:46ch}@media(max-width:560px){.tb-lang .lede{font-size:22px}.tb-lang .day .t{font-size:17px}.tb-lang .outro p{font-size:18px}.tb-lang .pass-row{flex-direction:column}.tb-lang .pass-main{flex:none;grid-template-columns:1fr 1fr}.tb-lang .pass:after{inset:auto 0;width:auto;height:1px;background-image:linear-gradient(90deg,var(--line-strong) 55%,transparent 0);background-size:9px 1px;top:calc(100% - 86px)}.tb-lang .pass-notch{left:auto}.tb-lang .pass-notch.t{top:auto;bottom:78px;left:-9px}.tb-lang .pass-notch.b{inset:auto -9px 78px auto}.tb-lang .tool .grid2{grid-template-columns:1fr}.tb-lang .tool .seg .opt{min-width:calc(50% - 4px)}.tb-lang .tool .msg{max-width:92%;font-size:16px}}@media(prefers-reduced-motion:reduce){.tb-lang .tool .typing span{animation:none}}