.lg-page{margin:0;background:var(--paper);color:var(--ink);font:500 16px/1.9 var(--font-fa)}
.lg-page *{box-sizing:border-box}.lg-page [hidden]{display:none!important}.lg-page .lg-reading,.lg-page .header__inner,.lg-page .lg-rail,.lg-page .lg-foot{width:min(calc(100% - 40px),860px);margin-inline:auto}
.lg-page .lg-head{border-bottom:1px solid var(--line-gold)}.lg-page .header__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:68px}.lg-page .header__start,.lg-page .header__trail,.lg-page .header__nav,.lg-page .lg-foot nav{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.lg-page .header__brand{font-weight:700}.lg-page .header__current{color:var(--ink-soft);font-size:14px}
.lg-page a{color:var(--ink);text-underline-offset:4px}.lg-page h1,.lg-page h2,.lg-page h3{font-family:var(--font-display);line-height:1.32;margin:0}.lg-page h1{font-size:clamp(42px,6vw,64px)}.lg-page h2{font-size:clamp(30px,4vw,44px)}.lg-page h3{font-size:clamp(24px,3vw,32px)}
.lg-page .lg-skip{position:fixed;inset:8px auto auto 8px;transform:translateY(-150%);z-index:10}.lg-page .lg-skip:focus{transform:translateY(0)}.lg-page :focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.lg-page .lbar{display:none}.lg-page .lg-rail{display:flex;flex-wrap:wrap;gap:14px;border-bottom:1px solid var(--line-gold);padding:12px 0;font-size:14px}.lg-page .lg-hero{padding:72px 0 48px;border-bottom:1px solid var(--line-gold)}.lg-page .lg-hero .lg-reading{display:grid;gap:16px}.lg-page .lg-kicker{margin:0;color:var(--ink-soft);font-size:14px}.lg-page .lg-sec{padding:72px 0;border-bottom:1px solid var(--line-gold)}.lg-page .lg-sec h2+*{margin-top:20px}.lg-page .lg-sec p+p{margin-top:14px}.lg-page .lg-en{direction:ltr;text-align:left;padding:16px;border:1px solid var(--line-dash);background:var(--slip);border-radius:var(--r-row)}
.lg-page .lg-chart-scoped{margin:32px 0}.lg-page .lg-chart-scoped figcaption p{color:var(--ink-soft);margin:6px 0 0}.lg-page .lg-chart__legend{display:flex;flex-wrap:wrap;gap:16px;list-style:none;margin:18px 0;padding:0}.lg-page .lg-chart__legend li{display:inline-flex;align-items:center;gap:8px;direction:ltr}.lg-page .lg-chart__key{display:inline-block;width:28px;border-top:3px solid var(--ink)}.lg-page .lg-chart__key--south{border-top-color:var(--ink-soft);border-top-style:dashed}.lg-page .lg-chart__plot-shell{padding:20px;border:1.5px solid var(--ink);border-radius:var(--r-surface);background:var(--slip)}.lg-page .lg-chart__plot-grid{display:grid;grid-template-columns:34px minmax(0,1fr);gap:10px;direction:ltr}.lg-page .lg-chart__y-ticks,.lg-page .lg-chart__x-ticks{position:relative;list-style:none;margin:0;padding:0;color:var(--ink-soft);font:500 13px/1 var(--font-en)}.lg-page .lg-chart__y-ticks{height:clamp(184px,44vw,236px)}.lg-page .lg-chart__y-ticks li{position:absolute;inset-inline-end:0;top:var(--y);transform:translateY(-50%)}.lg-page .lg-chart__y-ticks li:first-child{transform:translateY(0)}.lg-page .lg-chart__y-ticks li:last-child{transform:translateY(-100%)}.lg-page .lg-chart__plot-stack{min-width:0}.lg-page .lg-chart__svg{display:block;width:100%;height:clamp(184px,44vw,236px);overflow:visible}.lg-page .lg-chart__axis{fill:none;stroke:var(--ink);stroke-width:3;vector-effect:non-scaling-stroke}.lg-page .lg-chart__grid{fill:none;stroke:var(--line-gold);stroke-dasharray:4 8;stroke-width:1.5;vector-effect:non-scaling-stroke}.lg-page .lg-chart__line{fill:none;stroke:var(--ink);stroke-width:4;vector-effect:non-scaling-stroke}.lg-page .lg-chart__line--south{stroke:var(--ink-soft);stroke-dasharray:10 8}.lg-page .lg-chart__point{fill:var(--slip);stroke:var(--ink);stroke-width:4}.lg-page .lg-chart__point--south{stroke:var(--ink-soft)}.lg-page .lg-chart__x-ticks{height:20px;margin-top:12px}.lg-page .lg-chart__x-ticks li{position:absolute;left:var(--x);transform:translateX(-50%)}.lg-page .lg-chart__x-ticks li:first-child{transform:none}.lg-page .lg-chart__x-ticks li:last-child{transform:translateX(-100%)}.lg-page .lg-chart__table{width:100%;border-collapse:collapse;margin-top:20px;font-size:14px}.lg-page .lg-chart__table th,.lg-page .lg-chart__table td{padding:8px;border-bottom:1px solid var(--line-gold);text-align:center}.lg-page .lg-chart__table caption{color:var(--ink-soft);text-align:right;margin-bottom:8px}.lg-page details{border-block:1px dashed var(--line-dash);margin-top:18px;padding:12px 0}.lg-page summary{cursor:pointer;font-weight:700}
.lg-page .lg-q{margin-top:22px;padding:20px;border:1px solid var(--line-dash);border-radius:var(--r-surface);background:var(--slip)}.lg-page .lg-options{display:grid;gap:10px;margin-top:16px}.lg-page .lg-options button{min-height:48px;padding:10px;text-align:left;color:var(--ink);background:var(--paper);border:1px solid var(--ink);border-radius:var(--r-control);font:500 16px/1.7 var(--font-en)}.lg-page .lg-options button[disabled]{opacity:.62}.lg-page .lg-feedback{margin-top:14px;padding-top:14px;border-top:1px solid var(--line-gold)}.lg-page .lg-feedback p{margin:0 0 12px}.lg-page .lg-feedback[data-result="correct"]{border-inline-start:4px solid var(--ink);padding-inline-start:12px}.lg-page .lg-feedback[data-result="incorrect"]{border-inline-start:4px solid var(--ink-soft);padding-inline-start:12px}
.lg-page textarea{display:block;width:100%;min-height:112px;margin-top:8px;padding:12px;border:1px solid var(--ink);border-radius:var(--r-control);background:var(--paper);font:500 16px/1.8 var(--font-fa)}.lg-page label{display:block;margin-top:22px;font-weight:700}.lg-page .lg-check{font-weight:500}.lg-page .lg-foot{padding:42px 0}.lg-page .lg-foot nav{margin-bottom:16px}
@media (max-width:600px){.lg-page .lg-reading,.lg-page .header__inner,.lg-page .lg-rail,.lg-page .lg-foot{width:calc(100% - 32px)}.lg-page .header__inner{padding-block:12px}.lg-page .header__nav{width:100%}.lg-page .lg-hero,.lg-page .lg-sec{padding:48px 0}.lg-page .lg-hero .btn{display:flex;width:100%;justify-content:center}.lg-page .lg-chart__plot-shell{padding:14px}.lg-page .lg-chart__table{font-size:12px}.lg-page .lg-chart__table th,.lg-page .lg-chart__table td{padding:6px 2px}}
@media print{@page{size:A4;margin:14mm 15mm 23mm}.lg-page .lg-head,.lg-page .lbar,.lg-page .lg-rail,.lg-page .lg-foot,.lg-page .lg-hero .btn,.lg-page #book-clear,.lg-page #book-clear-confirm,.lg-page #book-key-toggle,.lg-page #book-status,.lg-page #markread-btn,.lg-page #print-card{display:none!important}.lg-page .lg-sec{padding:7mm 0}.lg-page textarea{min-height:45mm}.lg-page .lg-chart-scoped,.lg-page .lg-q,.lg-page #lg-book-form>label{break-inside:avoid}.lg-page .lg-en{display:block}.lg-page h1{font-size:25pt}.lg-page h2{font-size:18pt}}

@media screen and (min-width:1024px){
.lg-page .lg-intro-desk{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.4fr);gap:56px;max-width:1200px;width:calc(100% - 64px);margin:40px auto 64px;align-items:start}
.lg-page .lg-intro-desk>.lg-hero,.lg-page .lg-intro-desk>.lg-sec{padding:24px 0;border:0;min-width:0}
.lg-page .lg-intro-desk .lg-reading{width:100%;max-width:none;margin:0}
.lg-page .lg-intro-desk .lg-hero{align-self:center}
.lg-page .lg-intro-desk h1{font-size:clamp(40px,4vw,56px);line-height:1.4}
.lg-page .lg-intro-desk h2{font-size:32px}
.lg-page .lg-intro-desk figure{margin:24px 0 0}
.lg-page .lg-intro-desk .lg-chart__plot-shell{padding:16px}
.lg-page .lg-intro-desk .lg-chart__svg,.lg-page .lg-intro-desk .lg-chart__y-ticks{height:210px}
}