:root{--btg-bg:var(--surface-2);--btg-card-bg:var(--surface);--btg-card-border:rgba(68, 97, 242, 0.18);--btg-card-border-hover:rgba(68, 97, 242, 0.35);--btg-card-shadow:0 4px 20px -2px rgba(68, 97, 242, 0.08),0 2px 6px rgba(0, 0, 0, 0.03);--btg-card-shadow-hover:0 8px 30px -4px rgba(68, 97, 242, 0.14),0 4px 10px rgba(0, 0, 0, 0.04);--btg-text-main:var(--ink);--btg-text-sub:var(--ink-2);--btg-text-muted:var(--ink-3);--btg-surface-2:var(--surface-2);--btg-surface-3:var(--surface-3);--btg-header-bg:rgba(68, 97, 242, 0.03);--btg-divider:rgba(68, 97, 242, 0.08);--btg-btn-bg:var(--surface);--btg-btn-color:var(--ink-2);--btg-btn-border:rgba(68, 97, 242, 0.14);--btg-btn-hover-bg:var(--indigo-light);--btg-btn-hover-border:rgba(68, 97, 242, 0.35);--btg-btn-hover-color:var(--indigo);--btg-primary:#4461f2;--btg-primary-light:rgba(68, 97, 242, 0.1);--btg-green:#10b981;--btg-green-bg:rgba(16, 185, 129, 0.1);--btg-rose:#f43f5e;--btg-rose-bg:rgba(244, 63, 94, 0.08);--btg-radius:16px;--btg-radius-sm:9px;--btg-radius-xs:6px;--btg-transition:0.2s ease}[data-theme=dark]{--btg-bg:#0f1218;--btg-card-bg:#171a23;--btg-card-border:rgba(99, 102, 241, 0.24);--btg-card-border-hover:rgba(129, 140, 248, 0.45);--btg-card-shadow:0 8px 32px rgba(0, 0, 0, 0.38);--btg-card-shadow-hover:0 12px 40px rgba(0, 0, 0, 0.5);--btg-text-main:#f8fafc;--btg-text-sub:#cbd5e1;--btg-text-muted:#94a3b8;--btg-surface-2:#12151e;--btg-surface-3:#1f2330;--btg-header-bg:rgba(30, 35, 48, 0.6);--btg-divider:rgba(255, 255, 255, 0.07);--btg-btn-bg:#1c202d;--btg-btn-color:#cbd5e1;--btg-btn-border:rgba(255, 255, 255, 0.1);--btg-btn-hover-bg:rgba(68, 97, 242, 0.18);--btg-btn-hover-border:rgba(129, 140, 248, 0.4);--btg-btn-hover-color:#818cf8;--btg-primary-light:rgba(68, 97, 242, 0.2);--btg-green-bg:rgba(16, 185, 129, 0.18);--btg-rose-bg:rgba(244, 63, 94, 0.15)}.tool-card{background-color:#fff!important}.btg-page-wrapper{background:var(--btg-bg);min-height:calc(100vh - 80px);padding:100px 0 80px;transition:background .3s}.btg-header{text-align:center;max-width:680px;margin:0 auto 28px}.btg-header h1{font-family:var(--font-display);font-size:clamp(28px, 4vw, 42px);font-weight:800;color:var(--btg-text-main);line-height:1.2;letter-spacing:-.025em;margin:0 0 10px}.btg-header h1 span{background:var(--grad);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btg-subtitle{font-size:15.5px;color:var(--btg-text-sub);line-height:1.6;margin:0 auto;max-width:560px}.btg-workspace{display:flex;flex-direction:column;gap:22px;max-width:1200px;margin:0 auto}.btg-workspace-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;align-items:start}.btg-results-wrapper{display:flex;flex-direction:column;gap:10px}.btg-card{background:var(--btg-card-bg);border:1.5px solid var(--btg-card-border);border-radius:var(--btg-radius);box-shadow:var(--btg-card-shadow);overflow:hidden;transition:border-color var(--btg-transition),box-shadow var(--btg-transition),background .3s ease}.btg-card:hover{border-color:var(--btg-card-border-hover);box-shadow:var(--btg-card-shadow-hover)}.btg-input-card{display:flex;flex-direction:column}.btg-card-header{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;background:var(--btg-header-bg);border-bottom:1.5px solid var(--btg-divider);flex-wrap:wrap;gap:12px}.btg-card-title{display:flex;align-items:center;gap:10px}.btg-card-icon{width:32px;height:32px;border-radius:var(--btg-radius-sm);background:var(--indigo-light);color:var(--indigo);display:flex;align-items:center;justify-content:center;flex-shrink:0}[data-theme=dark] .btg-card-icon{background:rgba(68,97,242,.2);color:#818cf8}.btg-card-title h2{font-size:15px;font-weight:700;color:var(--btg-text-main);margin:0;letter-spacing:-.01em}.btg-header-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.btg-action-btn{display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:var(--btg-radius-sm);font-size:13px;font-weight:600;color:var(--btg-btn-color);background:var(--btg-btn-bg);border:1.5px solid var(--btg-btn-border);cursor:pointer;transition:all var(--btg-transition);white-space:nowrap;font-family:var(--font-body)}.btg-action-btn:hover:not(:disabled){color:var(--btg-btn-hover-color);background:var(--btg-btn-hover-bg);border-color:var(--btg-btn-hover-border);transform:translateY(-1px)}.btg-action-btn:active:not(:disabled){transform:translateY(0)}.btg-action-btn:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}.btg-action-btn--primary{color:var(--indigo);border-color:rgba(68,97,242,.25);background:rgba(68,97,242,.05)}[data-theme=dark] .btg-action-btn--primary{color:#818cf8;border-color:rgba(129,140,248,.3);background:rgba(68,97,242,.12)}.btg-action-btn--primary:hover:not(:disabled){background:var(--indigo);color:#fff;border-color:var(--indigo);box-shadow:0 3px 12px rgba(68,97,242,.3)}.btg-action-btn--success{color:#fff!important;background:var(--btg-green)!important;border-color:var(--btg-green)!important;box-shadow:0 2px 10px rgba(16,185,129,.3)!important}.btg-action-btn--danger{color:var(--btg-rose);border-color:rgba(244,63,94,.2)}.btg-action-btn--danger:hover:not(:disabled){color:var(--btg-rose);background:var(--btg-rose-bg);border-color:rgba(244,63,94,.35)}#btg-input{width:100%;height:140px;padding:20px 22px;font-size:15.5px;font-family:var(--font-body);color:var(--btg-text-main);background:var(--btg-card-bg);border:none;outline:0;resize:none;overflow-y:auto;line-height:1.7;transition:background .3s;display:block;box-sizing:border-box}#btg-input::placeholder{color:var(--btg-text-muted);opacity:.65}#btg-input:focus{background:rgba(68,97,242,.015)}[data-theme=dark] #btg-input:focus{background:rgba(68,97,242,.03)}.btg-card-footer{display:flex;align-items:center;justify-content:space-between;padding:11px 20px;background:var(--btg-header-bg);border-top:1.5px solid var(--btg-divider);flex-wrap:wrap;gap:10px}.btg-stats-bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.btg-stat-item{display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:500;color:var(--btg-text-muted);padding:4px 11px;border-radius:99px;background:var(--btg-card-bg);border:1px solid var(--btg-btn-border);transition:all var(--btg-transition)}.btg-stat-item strong{font-weight:700;color:var(--indigo)}[data-theme=dark] .btg-stat-item strong{color:#818cf8}.btg-results-badge{font-size:12px;font-weight:600;color:var(--btg-green);padding:4px 10px;border-radius:99px;background:var(--btg-green-bg);display:inline-flex;align-items:center;gap:5px}.btg-results-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 18px;background:var(--btg-card-bg);border:1.5px solid var(--btg-card-border);border-radius:var(--btg-radius);box-shadow:var(--btg-card-shadow);transition:background .3s ease,border-color var(--btg-transition)}.btg-results-head:hover{border-color:var(--btg-card-border-hover)}.btg-results-head-title{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:700;color:var(--btg-text-main);letter-spacing:-.01em;min-width:0}.btg-results-head-icon{width:30px;height:30px;border-radius:var(--btg-radius-sm);background:var(--indigo-light);color:var(--indigo);display:flex;align-items:center;justify-content:center;flex-shrink:0}[data-theme=dark] .btg-results-head-icon{background:rgba(68,97,242,.2);color:#818cf8}.btg-sample-badge{display:none;align-items:center;gap:6px;flex-shrink:0;padding:5px 11px;border-radius:99px;font-size:11.5px;font-weight:700;letter-spacing:.02em;color:var(--btg-text-sub);background:var(--btg-surface-2);border:1px solid var(--btg-divider);white-space:nowrap}.btg-sample-badge.visible{display:inline-flex}.btg-sample-dot{width:6px;height:6px;border-radius:50%;background:var(--indigo);flex-shrink:0;animation:1.8s ease-in-out infinite btg-pulse}[data-theme=dark] .btg-sample-dot{background:#818cf8}@keyframes btg-pulse{0%,100%{opacity:1}50%{opacity:.3}}.btg-results-wrapper.is-sample .btg-result-text{opacity:.72}.btg-results{display:flex;flex-direction:column;gap:10px}.btg-result-card{background:var(--btg-card-bg);border:1.5px solid var(--btg-card-border);border-radius:var(--btg-radius-sm);box-shadow:var(--btg-card-shadow);overflow:hidden;transition:border-color var(--btg-transition),box-shadow var(--btg-transition),background .3s ease;display:flex;align-items:stretch}.btg-result-card:hover{border-color:var(--btg-card-border-hover);box-shadow:var(--btg-card-shadow-hover)}.btg-result-label{display:flex;align-items:center;min-width:130px;width:130px;padding:14px 16px;background:var(--btg-header-bg);border-right:1.5px solid var(--btg-divider);flex-shrink:0}.btg-result-label-text{font-size:12px;font-weight:700;color:var(--btg-text-muted);letter-spacing:.03em;text-transform:uppercase;line-height:1.3}.btg-result-preview{flex:1;padding:14px 18px;display:flex;align-items:center;overflow:hidden}.btg-result-text{font-size:16px;color:var(--btg-text-main);line-height:1.5;word-break:break-all;overflow-wrap:anywhere;white-space:pre-wrap}.btg-result-actions{display:flex;align-items:center;gap:8px;padding:14px;flex-shrink:0;border-left:1.5px solid var(--btg-divider);background:var(--btg-header-bg)}.btg-copy-btn{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:var(--btg-radius-xs);font-size:12.5px;font-weight:600;color:var(--indigo);background:rgba(68,97,242,.07);border:1.5px solid rgba(68,97,242,.2);cursor:pointer;transition:all var(--btg-transition);font-family:var(--font-body);white-space:nowrap}.btg-copy-btn:hover{background:var(--indigo);color:#fff;border-color:var(--indigo);box-shadow:0 3px 12px rgba(68,97,242,.3);transform:translateY(-1px)}.btg-copy-btn:active{transform:translateY(0)}.btg-copy-btn.copied{background:var(--btg-green);color:#fff;border-color:var(--btg-green);box-shadow:0 2px 10px rgba(16,185,129,.3)}.btg-copy-btn:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}[data-theme=dark] .btg-copy-btn{color:#818cf8;background:rgba(68,97,242,.15);border-color:rgba(129,140,248,.3)}[data-theme=dark] .btg-copy-btn:hover{background:var(--indigo);color:#fff;border-color:var(--indigo)}.btg-content-section{margin-top:48px;max-width:1040px;margin-left:auto;margin-right:auto;padding:0 0 32px}.btg-content-card{background:var(--btg-card-bg);border:1.5px solid var(--btg-card-border);border-radius:var(--btg-radius);box-shadow:var(--btg-card-shadow);padding:32px 36px;margin-bottom:24px;transition:border-color var(--btg-transition),box-shadow var(--btg-transition),background .3s ease}.btg-content-card:hover{border-color:var(--btg-card-border-hover)}.btg-content-block+.btg-content-block{margin-top:30px;padding-top:30px;border-top:1px solid var(--btg-divider)}.btg-content-block--notice{padding:22px 24px;border-radius:var(--btg-radius-sm);background:var(--btg-primary-light);border:1.5px solid rgba(68,97,242,.18)}[data-theme=dark] .btg-content-block--notice{background:rgba(68,97,242,.1);border-color:rgba(129,140,248,.24)}.btg-content-card-header{display:flex;align-items:center;gap:12px;margin-bottom:18px}.btg-content-card-icon{width:38px;height:38px;border-radius:10px;background:var(--indigo-light);color:var(--indigo);display:flex;align-items:center;justify-content:center;flex-shrink:0}[data-theme=dark] .btg-content-card-icon{background:rgba(68,97,242,.2);color:#818cf8}.btg-content-card h2{font-family:var(--font-display);font-size:clamp(19px, 2.3vw, 24px);font-weight:700;color:var(--btg-text-main);line-height:1.25;margin:0}.btg-content-card p{font-size:15px;color:var(--btg-text-sub);line-height:1.75;margin-bottom:14px}.btg-content-card p:last-child{margin-bottom:0}.btg-content-card strong{font-weight:600;color:var(--btg-text-main)}.btg-content-intro{margin-bottom:30px;padding-bottom:30px;border-bottom:1px solid var(--btg-divider)}.btg-content-intro-title{font-family:var(--font-display);font-size:clamp(22px, 2.8vw, 28px);font-weight:800;color:var(--btg-text-main);line-height:1.2;letter-spacing:-.02em;margin:0}.btg-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:16px}.btg-step{text-align:center;padding:22px 18px;border-radius:var(--btg-radius-sm);background:var(--btg-surface-2);border:1px solid var(--btg-divider)}.btg-step-number{width:38px;height:38px;border-radius:50%;background:var(--grad);color:#fff;font-size:15px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 12px;box-shadow:0 4px 12px rgba(68,97,242,.3)}.btg-step h3{font-size:14.5px;font-weight:700;color:var(--btg-text-main);margin:0 0 6px}.btg-step p{font-size:13px;color:var(--btg-text-muted);line-height:1.6;margin:0}.btg-features-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:10px}.btg-features-list li{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:var(--btg-radius-sm);background:var(--btg-surface-2);border:1px solid var(--btg-divider);font-size:14px;color:var(--btg-text-sub);line-height:1.5;transition:all var(--btg-transition)}.btg-features-list li:hover{border-color:rgba(68,97,242,.25);background:var(--indigo-light)}[data-theme=dark] .btg-features-list li:hover{background:rgba(68,97,242,.1)}.btg-feature-check{width:22px;height:22px;border-radius:50%;background:var(--btg-green-bg);color:var(--btg-green);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}.btg-example{display:flex;flex-direction:column;gap:10px;padding:20px 22px;margin:18px 0;border-radius:var(--btg-radius-sm);background:var(--btg-surface-2);border:1px solid var(--btg-divider)}.btg-example-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}.btg-example-label{flex-shrink:0;min-width:104px;padding:4px 11px;border-radius:99px;font-size:11.5px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;text-align:center;color:var(--btg-text-muted);background:var(--btg-card-bg);border:1px solid var(--btg-divider)}.btg-example-text{font-size:21px;line-height:1.4;color:var(--btg-text-sub);word-break:break-word}.btg-example-text--bubble{font-size:25px;color:var(--btg-text-main);font-weight:600}.btg-example-arrow{display:flex;align-items:center;padding-left:12px;color:var(--btg-primary)}[data-theme=dark] .btg-example-arrow{color:#818cf8}.btg-cta-section{max-width:1040px;margin:8px auto 0;padding:0 0 32px}.btg-cta{position:relative;overflow:hidden;text-align:center;padding:44px 40px;border-radius:var(--btg-radius);background:var(--btg-primary-light);border:1.5px solid rgba(68,97,242,.22);transition:background .3s ease,border-color var(--btg-transition)}[data-theme=dark] .btg-cta{background:rgba(68,97,242,.12);border-color:rgba(129,140,248,.28)}.btg-cta::before{content:'';position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;background:var(--grad);opacity:.1;pointer-events:none}.btg-cta h2{font-family:var(--font-display);font-size:clamp(21px, 2.6vw, 28px);font-weight:800;color:var(--btg-text-main);line-height:1.25;letter-spacing:-.02em;margin:0 0 12px}.btg-cta p{font-size:15px;color:var(--btg-text-sub);line-height:1.75;margin:0 auto;max-width:680px}.btg-notice-card{display:flex;align-items:flex-start;gap:12px;padding:16px 18px;border-radius:var(--btg-radius-sm);background:var(--btg-primary-light);border:1.5px solid rgba(68,97,242,.2);margin-top:16px}[data-theme=dark] .btg-notice-card{background:rgba(68,97,242,.12);border-color:rgba(129,140,248,.25)}.btg-notice-icon{width:28px;height:28px;border-radius:7px;background:rgba(68,97,242,.12);color:var(--indigo);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px}[data-theme=dark] .btg-notice-icon{background:rgba(68,97,242,.22);color:#818cf8}.btg-notice-card p{font-size:13.5px;color:var(--btg-text-sub);line-height:1.65;margin:0}.btg-notice-card strong{font-weight:600;color:var(--btg-text-main)}.btg-toast{position:fixed;bottom:28px;right:28px;display:flex;align-items:center;gap:10px;padding:12px 18px;border-radius:12px;background:var(--btg-card-bg);border:1.5px solid var(--btg-card-border);box-shadow:0 10px 35px rgba(0,0,0,.18);font-size:13.5px;font-weight:600;color:var(--btg-text-main);z-index:9999;transform:translateY(80px);opacity:0;transition:.3s cubic-bezier(.16, 1, .3, 1);pointer-events:none;max-width:340px}.btg-toast.show{transform:translateY(0);opacity:1}.btg-toast-icon{width:26px;height:26px;border-radius:7px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.btg-toast--success .btg-toast-icon{background:var(--btg-green-bg);color:var(--btg-green)}.btg-toast--error .btg-toast-icon{background:var(--btg-rose-bg);color:var(--btg-rose)}@media (max-width:900px){.btg-workspace-grid{grid-template-columns:1fr}}@media (max-width:768px){.btg-page-wrapper{padding:90px 0 60px}.btg-cta{padding:32px 22px}.btg-example{padding:16px}.btg-example-row{flex-direction:column;align-items:flex-start;gap:8px}.btg-example-label{min-width:unset}.btg-example-text,.btg-example-text--bubble{font-size:20px}.btg-example-arrow{padding-left:0}.btg-page-wrapper .reveal{opacity:1;transform:none;transition:none}.btg-card-header{padding:12px 16px}.btg-card-footer{padding:10px 16px}.btg-content-card{padding:24px 20px}.btg-content-block+.btg-content-block{margin-top:24px;padding-top:24px}.btg-content-block--notice{padding:18px 16px}.btg-content-intro{margin-bottom:24px;padding-bottom:24px}#btg-input{min-height:120px;padding:16px;font-size:14.5px}.btg-result-card{flex-direction:column;align-items:stretch}.btg-result-label{width:100%;min-width:unset;border-right:none;border-bottom:1.5px solid var(--btg-divider);padding:10px 16px}.btg-result-preview{padding:12px 16px}.btg-result-actions{border-left:none;border-top:1.5px solid var(--btg-divider);padding:10px 16px;justify-content:flex-end}}@media (max-width:600px){.btg-header h1{font-size:clamp(24px, 6.5vw, 34px)}.btg-action-btn{padding:6px 10px;font-size:12.5px}.btg-card-footer{flex-direction:column;align-items:flex-start;gap:8px}.btg-stats-bar{gap:5px}.btg-stat-item{font-size:11.5px;padding:3px 8px}.btg-toast{bottom:16px;right:16px;left:16px;max-width:calc(100% - 32px)}.btg-features-list{grid-template-columns:1fr}}@media (max-width:576px){.btg-btn-label{display:none!important}}