/* CSS Transform 预览 · 工程蓝图（tfg-）· 网格、坐标轴、荧光标注 */
.tfg-page, .tfg-modal, .tfg-toast {
    --tfg-bg: #f4f7fb; --tfg-panel: #ffffff; --tfg-panel2: #f0f5fa;
    --tfg-ink: #173254; --tfg-sub: #617b9c; --tfg-line: #dae5f2; --tfg-line2: #bccfe6;
    --tfg-blue: #1b4d8f; --tfg-yellow: #b98700; --tfg-yellow-soft: #fff3cc; --tfg-red: #cf4356;
    --tfg-ok: #1c7a5e; --tfg-shadow: 0 12px 32px rgba(24, 58, 104, .12); --tfg-shadow-sm: 0 3px 10px rgba(24, 58, 104, .08);
    --tfg-radius: 10px;
    --tfg-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    --tfg-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
.tfg-page { background: var(--tfg-bg); color: var(--tfg-ink); padding: 0 0 60px; min-height: 60vh; font-family: var(--tfg-font); font-size: 14px; line-height: 1.75; }
.tfg-wrap { max-width: 1180px; margin: 0 auto; padding: 18px 18px 0; }
.tfg-page .detail-breadcrumb { font-size: 12.5px; color: var(--tfg-sub); margin: 8px 0 20px; }
.tfg-page .detail-breadcrumb a { color: var(--tfg-sub); text-decoration: none; }
.tfg-page .detail-breadcrumb a:hover { color: var(--tfg-blue); }
.tfg-page .detail-breadcrumb .current { color: var(--tfg-blue); font-weight: 700; }

.tfg-hero { display: grid; grid-template-columns: 1.12fr .88fr; gap: 24px; align-items: stretch; margin-bottom: 20px; }
.tfg-kicker { font: 700 11px var(--tfg-mono); letter-spacing: 2px; color: var(--tfg-blue); margin-bottom: 14px; }
.tfg-kicker i { display: inline-block; width: 44px; height: 1px; background: var(--tfg-yellow); vertical-align: middle; margin: 0 10px; }
.tfg-page h1 { font-size: 38px; line-height: 1.18; font-weight: 800; margin: 0 0 14px; letter-spacing: -.4px; }
.tfg-sub { font-size: 15.5px; line-height: 1.9; color: var(--tfg-sub); margin: 0 0 20px; max-width: 610px; }
.tfg-sub b { color: var(--tfg-ink); font-weight: 700; border-bottom: 2px solid var(--tfg-yellow); }
.tfg-facts { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.tfg-fact { background: var(--tfg-panel); border: 1px solid var(--tfg-line2); border-top: 3px solid var(--tfg-blue); border-radius: 4px; padding: 9px 16px; min-width: 112px; box-shadow: var(--tfg-shadow-sm); }
.tfg-fact b { display: block; font: 800 20px/1.2 var(--tfg-mono); }
.tfg-fact span { font-size: 11.5px; color: var(--tfg-sub); }
.tfg-fact.hot { border-top-color: var(--tfg-red); }
.tfg-fact.hot b { color: var(--tfg-red); font-size: 15px; }
.tfg-presets { display: flex; flex-wrap: wrap; gap: 8px; }
.tfg-chip { border: 1px solid var(--tfg-line2); background: var(--tfg-panel); color: var(--tfg-ink); border-radius: 4px; padding: 7px 14px; font-size: 12.5px; cursor: pointer; font-family: inherit; }
.tfg-chip:hover { border-color: var(--tfg-blue); color: var(--tfg-blue); }
.tfg-chip.is-on { background: var(--tfg-blue); border-color: var(--tfg-blue); color: #fff; font-weight: 700; }
.tfg-hero-card { background: #0f2a4d; border: 1px solid #2d4d78; color: #cfe0f5; border-radius: var(--tfg-radius); padding: 14px; box-shadow: var(--tfg-shadow); display: flex; flex-direction: column; }
.tfg-card-head { display: flex; justify-content: space-between; font: 700 10.5px var(--tfg-mono); letter-spacing: 1.4px; color: #8fb2dc; }
.tfg-card-head em { font-style: normal; color: #ffd45e; }
.tfg-mini-grid { flex: 1; min-height: 150px; margin: 12px 0; position: relative; border: 1px dashed #3b5c86; background-image: linear-gradient(rgba(120,170,220,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(120,170,220,.16) 1px, transparent 1px); background-size: 20px 20px; display: flex; align-items: center; justify-content: center; }
.tfg-mini-ghost { position: absolute; width: 64px; height: 64px; border: 1px dashed #f0b8c2; }
.tfg-mini-shape { position: relative; width: 64px; height: 64px; display: flex; align-items: center; justify-content: center; background: rgba(255,212,94,.18); border: 2px solid #ffd45e; color: #ffd45e; font: 800 22px var(--tfg-mono); }
.tfg-card-foot { font: 11px var(--tfg-mono); color: #9dbcda; border-top: 1px solid #2d4d78; padding-top: 9px; }
.tfg-card-foot b { color: #ffd45e; }

.tfg-panel { background: var(--tfg-panel); border: 1px solid var(--tfg-line2); border-radius: var(--tfg-radius); padding: 18px; box-shadow: var(--tfg-shadow-sm); }
.tfg-panel-head { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.tfg-panel-head h2 { font-size: 17px; font-weight: 800; margin: 0; }
.tfg-step { font: 800 11px var(--tfg-mono); color: #fff; background: var(--tfg-blue); padding: 5px 7px; border-radius: 3px; }
.tfg-hint { font-size: 12px; color: var(--tfg-sub); margin-left: auto; }
.tfg-btn { border: 1px solid var(--tfg-line2); background: var(--tfg-panel2); color: var(--tfg-ink); border-radius: 5px; padding: 8px 14px; font-size: 13px; cursor: pointer; font-family: inherit; }
.tfg-btn:hover { border-color: var(--tfg-blue); color: var(--tfg-blue); }
.tfg-btn-sm { padding: 5px 10px; font-size: 12px; }
.tfg-btn-main { background: var(--tfg-blue); border-color: var(--tfg-blue); color: #fff; font-weight: 700; }
.tfg-btn-main:hover { color: #fff; }
.tfg-code-btns { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }

.tfg-work { display: grid; grid-template-columns: 1.3fr .7fr; gap: 18px; margin-bottom: 18px; }
.tfg-board, .tfg-controls { min-width: 0; }
.tfg-canvas { position: relative; height: 330px; border: 1px solid var(--tfg-line2); border-radius: 6px; overflow: hidden; background-color: #fbfdff; background-image: linear-gradient(var(--tfg-line) 1px, transparent 1px), linear-gradient(90deg, var(--tfg-line) 1px, transparent 1px), linear-gradient(var(--tfg-line2) 1px, transparent 1px), linear-gradient(90deg, var(--tfg-line2) 1px, transparent 1px); background-size: 20px 20px, 20px 20px, 100px 100px, 100px 100px; display: flex; align-items: center; justify-content: center; perspective: 800px; }
.tfg-axis-x, .tfg-axis-y { position: absolute; background: var(--tfg-line2); }
.tfg-axis-x { left: 0; right: 0; top: 50%; height: 1px; }
.tfg-axis-y { top: 0; bottom: 0; left: 50%; width: 1px; }
.tfg-ghost { position: absolute; width: 150px; height: 100px; border: 2px dashed var(--tfg-red); color: var(--tfg-red); font: 700 10px var(--tfg-mono); display: flex; align-items: flex-start; justify-content: flex-end; padding: 4px; opacity: .75; }
.tfg-shape { position: relative; width: 150px; height: 100px; border: 2px solid var(--tfg-blue); background: rgba(27,77,143,.10); color: var(--tfg-blue); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 3px; will-change: transform; }
.tfg-shape b { font: 800 12px var(--tfg-mono); letter-spacing: 1px; }
.tfg-shape small { font-size: 10px; font-family: var(--tfg-mono); }
.tfg-canvas-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 12px; font-size: 12px; color: var(--tfg-sub); }
.tfg-foot-note { margin-left: auto; color: var(--tfg-yellow); font-weight: 700; }

.tfg-range { display: block; margin-bottom: 11px; }
.tfg-range > span { display: flex; justify-content: space-between; font-size: 12.5px; color: var(--tfg-sub); margin-bottom: 4px; }
.tfg-range b { color: var(--tfg-blue); font: 700 12px var(--tfg-mono); }
.tfg-range input[type=range] { width: 100%; accent-color: var(--tfg-blue); cursor: pointer; }
.tfg-origin { margin-top: 12px; border-top: 1px dashed var(--tfg-line2); padding-top: 12px; }
.tfg-origin-title { font-size: 12px; color: var(--tfg-sub); margin-bottom: 8px; }
.tfg-origin-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 5px; max-width: 180px; }
.tfg-origin-grid button { aspect-ratio: 1; border: 1px solid var(--tfg-line2); background: var(--tfg-panel2); color: var(--tfg-sub); border-radius: 3px; cursor: pointer; font: 11px var(--tfg-mono); }
.tfg-origin-grid button.is-on { background: var(--tfg-yellow); border-color: var(--tfg-yellow); color: #3a2b00; font-weight: 800; }
.tfg-err { margin: 10px 0 0; background: #fde9ec; color: var(--tfg-red); border-radius: 5px; padding: 8px 10px; font-size: 12.5px; }
.tfg-err[hidden] { display: none; }

.tfg-code { margin-bottom: 18px; }
.tfg-code-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.tfg-code-label { font: 700 11px var(--tfg-mono); letter-spacing: 1px; color: var(--tfg-sub); margin-bottom: 6px; }
.tfg-pre { margin: 0; background: #0e2440; color: #d8e9fb; border-radius: 6px; padding: 14px; font: 12px/1.8 var(--tfg-mono); white-space: pre-wrap; word-break: break-word; min-height: 150px; max-height: 240px; overflow: auto; }
.tfg-batch-note { font-size: 12.5px; color: var(--tfg-sub); margin: 0 0 10px; }
.tfg-batch-note code { background: var(--tfg-yellow-soft); padding: 1px 5px; border-radius: 3px; font: 12px var(--tfg-mono); }
.tfg-textarea { width: 100%; box-sizing: border-box; border: 1px solid var(--tfg-line2); background: var(--tfg-panel2); color: var(--tfg-ink); border-radius: 6px; padding: 12px; font: 12.5px/1.8 var(--tfg-mono); resize: vertical; }
.tfg-check-list { margin-top: 12px; font-size: 12.5px; }
.tfg-check-row { display: flex; gap: 10px; align-items: flex-start; padding: 6px 8px; border-bottom: 1px dashed var(--tfg-line); }
.tfg-check-row code { font: 12px var(--tfg-mono); word-break: break-all; }
.tfg-check-row .tfg-tag { flex: none; font-weight: 800; }
.tfg-tag.ok { color: var(--tfg-ok); }
.tfg-tag.bad { color: var(--tfg-red); }
.tfg-check-row small { color: var(--tfg-sub); }

.tfg-modal[hidden] { display: none !important; }
.tfg-modal { position: fixed; inset: 0; z-index: 9999; background: rgba(12,32,60,.6); display: flex; align-items: center; justify-content: center; padding: 20px; }
.tfg-modal-card { position: relative; background: var(--tfg-panel); color: var(--tfg-ink); border-radius: var(--tfg-radius); padding: 26px; width: min(520px, 100%); box-shadow: var(--tfg-shadow); }
.tfg-modal-card h2 { font-size: 19px; margin: 0 0 8px; }
.tfg-modal-card p { font-size: 13px; color: var(--tfg-sub); margin: 0 0 14px; }
.tfg-modal-card input { width: 100%; box-sizing: border-box; border: 1px solid var(--tfg-line2); border-radius: 6px; padding: 9px 10px; font: 12px var(--tfg-mono); background: var(--tfg-panel2); color: var(--tfg-ink); margin-bottom: 12px; }
.tfg-modal-x { position: absolute; right: 12px; top: 8px; border: 0; background: none; font-size: 24px; color: var(--tfg-sub); cursor: pointer; line-height: 1; }
.tfg-toast { position: fixed; left: 50%; bottom: 34px; transform: translateX(-50%) translateY(20px); background: var(--tfg-blue); color: #fff; padding: 10px 20px; border-radius: 4px; font-size: 13px; opacity: 0; pointer-events: none; transition: .22s; z-index: 10000; }
.tfg-toast.is-on { opacity: 1; transform: translateX(-50%) translateY(0); }

:root[data-theme="dark"] .tfg-page, :root[data-theme="dark"] .tfg-modal, :root[data-theme="dark"] .tfg-toast {
    --tfg-bg: #0c1523; --tfg-panel: #152236; --tfg-panel2: #1b2b43;
    --tfg-ink: #e3edfb; --tfg-sub: #94aac7; --tfg-line: #24354e; --tfg-line2: #34496a;
    --tfg-blue: #79aaf0; --tfg-yellow: #ffd45e; --tfg-yellow-soft: #3a3016; --tfg-red: #ff8b9b;
    --tfg-ok: #74d0a6; --tfg-shadow: 0 12px 32px rgba(0,0,0,.5); --tfg-shadow-sm: 0 3px 10px rgba(0,0,0,.4);
}
:root[data-theme="dark"] .tfg-chip.is-on, :root[data-theme="dark"] .tfg-btn-main, :root[data-theme="dark"] .tfg-step { color: #0c1523; }
:root[data-theme="dark"] .tfg-canvas { background-color: #101c2e; }
:root[data-theme="dark"] .tfg-pre { background: #081426; color: #c9e0f8; }
:root[data-theme="dark"] .tfg-origin-grid button.is-on { color: #3a2b00; }
:root[data-theme="dark"] .tfg-foot-note { color: var(--tfg-yellow); }
:root[data-theme="dark"] .tfg-toast { background: var(--tfg-yellow); color: #0c1523; }

@media (max-width: 920px) { .tfg-hero, .tfg-work, .tfg-code-grid { grid-template-columns: 1fr; } .tfg-page h1 { font-size: 30px; } }
@media (max-width: 560px) {
    .tfg-wrap { padding: 12px 12px 0; } .tfg-page h1 { font-size: 26px; }
    .tfg-sub { font-size: 14px; line-height: 1.8; } .tfg-panel { padding: 14px; }
    .tfg-canvas { height: 260px; } .tfg-code-btns { margin-left: 0; }
}