.sn-app{background-color:var(--ct-bg);border:1px solid var(--ct-border);border-radius:var(--ct-radius-md);margin-bottom:24px;overflow:hidden}.sn-app__header{border-bottom:1px solid var(--ct-border);background-color:var(--ct-bg-soft);padding:16px 24px}.sn-app__title{color:var(--ct-text-main);font-size:18px;font-weight:700}.sn-app__body{padding:24px}.sn-calibration{flex-direction:column;gap:24px;max-width:600px;margin:0 auto;display:flex}.sn-calibration__instructions{flex-direction:column;gap:8px;display:flex}.sn-calibration__step{background-color:var(--ct-bg-soft);border:1px solid var(--ct-border);border-radius:var(--ct-radius-sm);color:var(--ct-text-main);align-items:flex-start;gap:12px;padding:12px 16px;font-size:14px;line-height:1.6;display:flex}.sn-calibration__num{background-color:var(--ct-primary);width:24px;height:24px;color:var(--ct-bg);border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex}.sn-calibration__ruler{background-color:var(--ct-bg-soft);border:1px solid var(--ct-border);border-radius:var(--ct-radius-sm);height:48px;position:relative;overflow:hidden}.sn-calibration__fill{background:var(--ct-gradient-primary);opacity:.18;pointer-events:none;height:100%;transition:width 30ms;position:absolute;top:0;left:0}.sn-calibration__slider{opacity:0;cursor:pointer;appearance:none;width:100%;height:100%;margin:0;position:absolute;top:0;left:0}.sn-calibration__ruler:after{content:"";background-color:var(--ct-accent);pointer-events:none;width:3px;height:100%;top:0;left:var(--sn-thumb-left,50%);transition:left 30ms;position:absolute}.sn-calibration__label{color:var(--ct-text-muted);text-align:center;font-size:14px}.sn-calibration__distance{background-color:var(--ct-bg-soft);border:1px solid var(--ct-border);border-radius:var(--ct-radius-sm);padding:16px}.sn-calibration__distance-label{color:var(--ct-text-main);margin-bottom:12px;font-size:14px;font-weight:600;display:block}.sn-calibration__distance-row{align-items:center;gap:16px;display:flex}.sn-calibration__distance-slider{accent-color:var(--ct-accent);cursor:pointer;flex:1}.sn-calibration__distance-value{min-width:40px;color:var(--ct-accent);text-align:center;flex-shrink:0;font-size:16px;font-weight:700}.sn-calibration__distance-hint{color:var(--ct-text-muted);margin-top:8px;font-size:13px;line-height:1.5}.sn-chart-toolbar{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;display:flex}.sn-chart-toolbar__left{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.sn-chart-type{align-items:center;gap:12px;display:flex}.sn-chart-type__label{color:var(--ct-text-main);font-size:14px;font-weight:600}.sn-guide-wrap{display:inline-block;position:relative}.sn-guide-popover{z-index:10;background-color:var(--ct-bg);border:1px solid var(--ct-border);border-radius:var(--ct-radius-md);min-width:280px;box-shadow:var(--ct-shadow-lg);padding:12px 16px;display:none;position:absolute;top:calc(100% + 8px);right:0}.sn-guide-popover--open{display:block}.sn-guide-popover__arrow{background-color:var(--ct-bg);border-left:1px solid var(--ct-border);border-top:1px solid var(--ct-border);width:12px;height:12px;position:absolute;top:-6px;right:20px;transform:rotate(45deg)}.sn-guide-popover__item{color:var(--ct-text-main);align-items:flex-start;gap:10px;padding:8px 0;font-size:13px;line-height:1.5;display:flex}.sn-guide-popover__item+.sn-guide-popover__item{border-top:1px solid var(--ct-border)}.sn-guide-popover__item svg{color:var(--ct-accent);flex-shrink:0;margin-top:2px}.sn-chart-distance{color:var(--ct-accent);background-color:var(--ct-bg-soft);border:1px solid var(--ct-border);border-radius:var(--ct-radius-full);margin:0;padding:6px 16px;font-size:13px;font-weight:600;display:inline-block}.sn-chart{background-color:var(--ct-bg);border:1px solid var(--ct-border);border-radius:var(--ct-radius-md);max-height:80vh;padding:32px 16px;overflow-y:auto}.sn-chart__row{border-bottom:1px solid var(--ct-border);justify-content:center;align-items:center;gap:24px;padding:16px 0;display:flex}.sn-chart__row:last-child{border-bottom:none}.sn-chart__acuity{width:60px;color:var(--ct-text-muted);text-align:right;flex-shrink:0;font-size:13px}.sn-chart__letters{color:var(--ct-text-main);text-align:center;white-space:nowrap;font-family:Courier New,SF Mono,monospace;font-weight:700}.sn-chart__letters--tumbling{letter-spacing:0;align-items:center;display:inline-flex}.sn-chart__e{display:inline-block}.sn-actions{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.sn-print-header{display:none}@media (width<=640px){.sn-app__body{padding:16px}.sn-actions{flex-direction:column}.sn-actions .btn{width:100%}.sn-chart__acuity{width:48px;font-size:11px}}@media print{body *{visibility:hidden}.sn-print-header,.sn-print-header *,#sn-chart-container,#sn-chart-container *{visibility:visible}.sn-print-header{width:100%;padding:10mm 15mm;display:block;position:fixed;top:0;left:0}.sn-print-header__title{color:#000;margin-bottom:4px;font-size:18px;font-weight:700}.sn-print-header__instructions{color:#555;margin-bottom:0;font-size:11px}#sn-chart-container{background:#fff;border:none;width:100%;max-height:none;padding:0 15mm;position:fixed;top:25mm;left:0;overflow:visible;--sn-scale:1!important}.sn-chart__row{break-inside:avoid;border-bottom:none;padding:8px 0}.sn-chart__letters{color:#000}.sn-chart__acuity{color:#666}#sn-chart-container:after{content:"Tạo bởi chitiet.vn";color:#999;margin-top:10mm;font-size:9px;display:block}}