.tt-page{max-width:980px;margin:0 auto}
.tt-hero{margin-bottom:14px}
.tt-hero h1{margin-bottom:7px}
.tt-hero-lead{max-width:760px;margin:0;color:var(--muted);line-height:1.65}
.tt-app-guide{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:14px 0;padding:15px 16px;border:1px solid color-mix(in srgb,var(--primary) 28%,var(--border));border-radius:14px;background:color-mix(in srgb,var(--primary) 6%,var(--surface))}
.tt-app-guide strong{color:var(--primary);font-size:15px}
.tt-app-guide p{margin:5px 0 0;color:var(--muted);font-size:13px;line-height:1.65}
.tt-app-guide .tt-button{flex-shrink:0;font-size:14px}
@media(max-width:650px){
  .tt-app-guide{align-items:stretch;flex-direction:column;gap:12px;padding:14px}
  .tt-app-guide .tt-button{min-height:44px}
}
.tt-section{margin:18px 0;padding:22px;border:1px solid var(--border);border-radius:18px;background:var(--surface);box-shadow:0 12px 34px rgba(16,47,78,.06)}
.tt-section-head{display:flex;align-items:flex-start;gap:11px;margin-bottom:14px}
.tt-section-head h2{margin:0 0 3px;font-size:21px}
.tt-section-head p{margin:0;color:var(--muted);font-size:13px}
.tt-step-kicker{display:inline-flex;align-items:center;justify-content:center;min-height:25px;flex:0 0 auto;padding:0 9px;border-radius:999px;background:color-mix(in srgb,var(--primary) 12%,var(--surface));color:var(--primary);font-size:11px;font-weight:900;white-space:nowrap}
.tt-journey{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:0 0 14px;padding:0;list-style:none}
.tt-journey li{display:flex;align-items:center;justify-content:center;gap:7px;min-width:0;padding:9px 8px;border:1px solid var(--border);border-radius:11px;background:var(--bg);color:var(--muted);font-size:12px;font-weight:800;transition:border-color .16s,background .16s,color .16s}
.tt-journey b{display:grid;place-items:center;width:22px;height:22px;flex:0 0 22px;border-radius:50%;background:var(--surface-2);color:var(--muted);font-size:11px}
.tt-journey .is-active{border-color:color-mix(in srgb,var(--primary) 45%,var(--border));background:color-mix(in srgb,var(--primary) 7%,var(--surface));color:var(--primary)}
.tt-journey .is-active b{background:var(--primary);color:#fff}
.tt-journey .is-done{color:var(--text)}
.tt-journey .is-done b{background:color-mix(in srgb,#16803b 18%,var(--surface));color:#16803b}
.tt-label{display:block;margin:0 0 7px;font-weight:800;font-size:14px}
.tt-source-tabs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin:0 0 14px;padding:5px;border:1px solid var(--border);border-radius:14px;background:var(--bg)}
.tt-source-tab{min-width:0;min-height:42px;padding:8px 10px;border:0;border-radius:10px;background:transparent;color:var(--muted);font:inherit;font-size:14px;font-weight:800;cursor:pointer}
.tt-source-tab[aria-selected="true"]{background:var(--surface);color:var(--primary);box-shadow:0 3px 14px rgba(16,47,78,.1)}
.tt-source-tab:disabled{cursor:not-allowed;opacity:.5}
.tt-source-help{margin:0 0 12px;color:var(--muted);font-size:13px;line-height:1.6}
.tt-import-steps{margin:5px 0;padding-left:20px;font-size:13px;line-height:1.65}
.tt-import-steps li{margin:3px 0}
.tt-textarea,.tt-input{width:100%;border:1px solid var(--border);border-radius:13px;background:var(--bg);color:var(--text);outline:none;transition:border-color .16s,box-shadow .16s,background .16s}
.tt-textarea{min-height:300px;resize:vertical;padding:15px 16px;font:13px/1.65 ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace}
.tt-textarea:focus,.tt-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px color-mix(in srgb,var(--primary) 14%,transparent);background:var(--surface)}
.tt-input{height:44px;padding:0 12px}
.tt-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:14px}
.tt-button{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 17px;border:1px solid transparent;border-radius:12px;font:inherit;font-weight:800;text-decoration:none;cursor:pointer}
.tt-button-primary{color:#fff;background:linear-gradient(100deg,var(--primary-dark),var(--primary),var(--primary-2))}
.tt-button-secondary{color:var(--primary);border-color:color-mix(in srgb,var(--primary) 35%,var(--border));background:var(--surface-2)}
.tt-button:disabled{cursor:not-allowed;opacity:.48}
.tt-ocr-guide{display:flex;flex-direction:column;gap:2px;margin:0 0 12px;padding:11px 13px;border:1px solid color-mix(in srgb,var(--primary) 28%,var(--border));border-radius:12px;background:color-mix(in srgb,var(--primary) 6%,var(--surface))}
.tt-ocr-guide strong{font-size:13px}
.tt-ocr-guide span{color:var(--muted);font-size:11px;line-height:1.55}
.tt-text-guide{margin:0 0 14px;padding:0 12px;border:1px solid var(--border);border-radius:12px;background:var(--surface)}
.tt-text-guide summary{padding:12px 0;color:var(--primary);font-size:13px;font-weight:700;cursor:pointer}
.tt-text-guide summary:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.tt-text-guide p{margin:0 0 10px;color:var(--muted);font-size:12px}
.tt-text-guide .tt-actions{margin:0 0 12px;flex-wrap:wrap;gap:8px}
.tt-file-input{display:block;width:100%;padding:10px;border:1px dashed color-mix(in srgb,var(--primary) 48%,var(--border));border-radius:12px;background:var(--bg);color:var(--text);font:inherit;font-size:13px}
.tt-file-input::file-selector-button{min-height:34px;margin-right:10px;padding:0 13px;border:0;border-radius:9px;background:var(--primary);color:#fff;font:inherit;font-weight:800;cursor:pointer}
.tt-file-input:focus{outline:3px solid color-mix(in srgb,var(--primary) 18%,transparent);outline-offset:2px}
.tt-file-meta{margin:6px 0 0;color:var(--muted);font-size:11px}
.tt-upload-actions{margin-top:10px}
.tt-ocr-canvas{display:block;width:100%;height:auto;max-height:480px;object-fit:contain;margin:12px 0 0;border:1px solid var(--border);border-radius:12px;background:#fff}
.tt-ocr-progress{margin:12px 0 0;padding:11px 12px;border:1px solid var(--border);border-radius:12px;background:var(--bg)}
.tt-ocr-progress div{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:7px;font-size:12px}
.tt-ocr-progress span{color:var(--muted);font-variant-numeric:tabular-nums}
.tt-ocr-progress progress{display:block;width:100%;height:8px;accent-color:var(--primary)}
.tt-status{margin:14px 0 0;padding:13px 14px;border:1px solid var(--border);border-radius:13px;background:var(--surface-2)}
.tt-status strong{display:block;margin-bottom:2px;font-size:14px}
.tt-status p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}
.tt-status[data-kind="success"]{border-color:color-mix(in srgb,#16803b 35%,var(--border));background:color-mix(in srgb,#16803b 7%,var(--surface))}
.tt-status[data-kind="warning"]{border-color:color-mix(in srgb,var(--accent) 42%,var(--border));background:color-mix(in srgb,var(--accent) 8%,var(--surface))}
.tt-status[data-kind="error"]{border-color:color-mix(in srgb,#c0392b 38%,var(--border));background:color-mix(in srgb,#c0392b 7%,var(--surface))}
.tt-result{margin-top:16px}
.tt-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}
.tt-summary-card{padding:11px 12px;border:1px solid var(--border);border-radius:12px;background:var(--bg)}
.tt-summary-card strong{display:block;font-size:20px;line-height:1.2;color:var(--primary)}
.tt-summary-card span{display:block;margin-top:2px;color:var(--muted);font-size:11px}
.tt-practice-notice{margin:12px 0;padding:11px 12px;border-radius:12px;background:color-mix(in srgb,var(--accent) 9%,var(--surface));color:var(--text);font-size:12px}
.tt-paste-diagnostics p{margin:6px 0;padding:9px 12px;border-radius:9px;background:var(--surface-2);font-size:12px;overflow-wrap:anywhere}
.tt-paste-diagnostics [data-severity="warning"]{background:color-mix(in srgb,var(--accent) 12%,var(--surface))}
.tt-paste-diagnostics [data-severity="error"]{border-left:3px solid #c0392b;background:color-mix(in srgb,#c0392b 10%,var(--surface))}
.tt-next-step{display:flex;align-items:flex-start;gap:10px;margin:14px 0 10px;padding:13px 14px;border-left:4px solid var(--primary);border-radius:11px;background:color-mix(in srgb,var(--primary) 6%,var(--surface))}
.tt-next-step strong{display:block;font-size:14px}
.tt-next-step p{margin:2px 0 0;color:var(--muted);font-size:12px;line-height:1.55}
.tt-preview-title{margin:15px 0 9px;font-size:15px}
.tt-preview{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px}
.tt-course-card{border:1px solid var(--border);border-radius:13px;background:var(--bg)}
article.tt-course-card{padding:14px 15px}
.tt-course-card[data-ocr-warning="true"]{border-color:color-mix(in srgb,var(--accent) 55%,var(--border));background:color-mix(in srgb,var(--accent) 6%,var(--bg))}
.tt-course-card h3{margin:0 0 5px;font-size:14px;line-height:1.45}
.tt-course-card p{margin:0}
.tt-course-when{color:var(--primary);font-size:12px;font-weight:700}
.tt-course-detail{margin-top:2px!important;color:var(--muted);font-size:11px}
details.tt-course-card{overflow:hidden;padding:0}
.tt-course-card-summary{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:12px 13px;list-style:none;cursor:pointer}
.tt-course-card-summary::-webkit-details-marker{display:none}
.tt-course-card-summary-copy{min-width:0}
.tt-course-card-summary-copy strong{display:block;overflow:hidden;color:var(--text);font-size:13px;line-height:1.4;text-overflow:ellipsis;white-space:nowrap}
.tt-course-card-summary-copy small{display:block;margin-top:2px;color:var(--muted);font-size:10px;line-height:1.4}
.tt-course-summary-badge{padding:4px 7px;border-radius:999px;background:color-mix(in srgb,var(--primary) 10%,var(--surface));color:var(--primary);font-size:10px;font-weight:850;white-space:nowrap}
.tt-course-card[data-ocr-warning="true"] .tt-course-summary-badge{background:color-mix(in srgb,var(--accent) 18%,var(--surface));color:color-mix(in srgb,var(--accent) 72%,var(--text))}
details.tt-course-card[open] .tt-course-card-summary{border-bottom:1px solid var(--border)}
details.tt-course-card[open] .tt-course-summary-badge::after{content:" · 收起"}
.tt-course-editor{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:9px;padding:13px}
.tt-course-editor .tt-edit-wide{grid-column:1/-1}
.tt-course-editor .tt-edit-half{grid-column:span 3}
.tt-course-editor .tt-edit-third{grid-column:span 2}
.tt-edit-field{min-width:0}
.tt-edit-field label{display:block;margin:0 0 4px;color:var(--muted);font-size:10px;font-weight:800}
.tt-edit-field input,.tt-edit-field select{width:100%;height:37px;padding:0 8px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);font:inherit;font-size:12px;outline:none}
.tt-edit-field input:focus,.tt-edit-field select:focus{border-color:var(--primary);box-shadow:0 0 0 2px color-mix(in srgb,var(--primary) 13%,transparent)}
.tt-ocr-issues{grid-column:1/-1;margin:0;padding:9px 10px;border-radius:9px;background:color-mix(in srgb,var(--accent) 12%,var(--surface));font-size:11px;line-height:1.5}
.tt-course-editor-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;grid-column:1/-1}
.tt-course-editor-actions small{color:var(--muted);font-size:10px}
.tt-course-remove{padding:5px 9px;border:1px solid color-mix(in srgb,#c0392b 30%,var(--border));border-radius:8px;background:var(--surface);color:#b83226;font:inherit;font-size:11px;font-weight:800;cursor:pointer}
.tt-ocr-raw{margin:14px 0 0;border:1px solid var(--border);border-radius:12px;background:var(--bg)}
.tt-ocr-raw summary{padding:11px 13px;color:var(--muted);font-size:12px;font-weight:800;cursor:pointer}
.tt-ocr-raw pre{max-height:360px;overflow:auto;margin:0;padding:0 13px 13px;white-space:pre-wrap;word-break:break-word;color:var(--muted);font:11px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace}
.tt-ocr-review{margin:16px 0 0;padding:14px;border:1px solid color-mix(in srgb,var(--accent) 45%,var(--border));border-radius:13px;background:color-mix(in srgb,var(--accent) 8%,var(--surface))}
.tt-review-heading{display:flex;align-items:flex-start;gap:10px}
.tt-review-heading strong{display:block;font-size:14px}
.tt-review-heading p{margin:2px 0 0;color:var(--muted);font-size:11px;line-height:1.55}
.tt-review-check{display:flex;align-items:flex-start;gap:9px;margin-top:12px;padding:11px;border:1px solid color-mix(in srgb,var(--primary) 26%,var(--border));border-radius:10px;background:var(--surface);font-size:13px;font-weight:850;line-height:1.5;cursor:pointer}
.tt-review-check input{width:18px;height:18px;flex:0 0 18px;margin:1px 0 0;accent-color:var(--primary)}
.tt-review-hint{margin:7px 2px 0;color:var(--muted);font-size:11px}
.tt-settings{display:grid;grid-template-columns:2fr 1.2fr .8fr;gap:14px}
.tt-field small{display:block;margin-top:5px;color:var(--muted);font-size:11px}
.tt-generate-area{margin-top:18px;padding-top:4px;border-top:1px solid var(--border)}
.tt-code{min-height:170px;margin-top:14px;word-break:break-all}
.tt-code-meta{color:var(--muted);font-size:12px}
.tt-note{margin:12px 0 0;color:var(--muted);font-size:12px}
.tt-footer{display:flex;justify-content:space-between;gap:14px;margin:24px 0 8px;padding-top:18px;border-top:1px solid var(--border)}
.tt-footer a{color:var(--primary);font-weight:700}
[hidden]{display:none!important}
@media(max-width:800px){
  .tt-summary{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tt-settings{grid-template-columns:1fr 1fr}
  .tt-field:first-child{grid-column:1/-1}
}
@media(max-width:650px){
  .tt-hero{margin-bottom:10px}
  .tt-hero h1{font-size:28px}
  .tt-hero-lead{font-size:14px;line-height:1.55}
  .tt-section{margin:14px 0;padding:16px 14px;border-radius:15px}
  .tt-section-head{gap:8px;margin-bottom:12px}
  .tt-section-head h2{font-size:19px}
  .tt-section-head p{font-size:12px;line-height:1.45}
  .tt-journey{gap:5px;margin-bottom:12px}
  .tt-journey li{flex-direction:column;gap:4px;padding:7px 3px;font-size:11px;text-align:center}
  .tt-journey b{width:21px;height:21px;flex-basis:21px}
  .tt-source-tabs{margin-bottom:12px}
  .tt-source-tab{min-height:40px;padding:7px 5px;font-size:13px}
  .tt-ocr-guide{padding:10px 11px}
  .tt-upload-actions .tt-button{width:100%}
  .tt-ocr-canvas{max-height:340px}
  .tt-textarea{min-height:240px;font-size:12px}
  .tt-preview{grid-template-columns:1fr}
  .tt-settings{grid-template-columns:1fr}
  .tt-field:first-child{grid-column:auto}
  .tt-button{min-height:44px}
  .tt-footer{flex-direction:column}
}
@media(max-width:420px){
  .tt-summary{grid-template-columns:1fr 1fr}
  .tt-course-editor .tt-edit-third{grid-column:span 3}
  .tt-review-check{font-size:12px}
}