:root{color-scheme:light dark;--bg:#f5f6f8;--surface:#fff;--text:#1c2230;--muted:#5b6474;--border:#dde1e8;--border-strong:#b9c0cc;--accent:#2457d6;--accent-hover:#1c47b3;--accent-soft:#e7eefd;--on-accent:#fff;--monitor-bg:#fff8e5;--badge-bg:#ffe6a6;--badge-text:#5f4200;--success:#1d7a46;--error:#c0262d;--note-bg:#eef4ff;--radius:10px;--font:system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif}:root:lang(ko){--font:-apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif}:root:lang(zh-Hant){--font:-apple-system, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif}:root:lang(zh-Hans){--font:-apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif}@media (prefers-color-scheme:dark){:root{--bg:#111419;--surface:#1a1e26;--text:#e6e9ef;--muted:#9ba4b3;--border:#2d333e;--border-strong:#46505f;--accent:#7fa3ff;--accent-hover:#a0bbff;--accent-soft:#233052;--on-accent:#0c1222;--monitor-bg:#272215;--badge-bg:#4a3b10;--badge-text:#ffdf8a;--success:#6fd49a;--error:#ff8a8f;--note-bg:#1f2a40}}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font);margin:0;font-size:16px;line-height:1.7}h1,h2,h3{word-break:auto-phrase;line-height:1.4}h1{margin:0 0 .5rem;font-size:clamp(1.4rem,1.1rem + 1.5vw,1.9rem)}h2{margin:0 0 1rem;font-size:1.25rem}a{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.container{width:100%;max-width:960px;margin:0 auto;padding:0 16px}.visually-hidden{clip:rect(0 0 0 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{background:var(--surface);z-index:10;padding:4px 8px;position:absolute;top:-40px;left:8px}.skip-link:focus{top:8px}.muted{color:var(--muted)}.site-header{background:var(--surface);border-bottom:1px solid var(--border)}.site-header-inner{flex-wrap:wrap;align-items:baseline;gap:.25rem 1rem;padding-top:12px;padding-bottom:12px;display:flex}.site-name{color:var(--text);font-size:1.1rem;font-weight:700;text-decoration:none}.site-tagline{color:var(--muted);font-size:.85rem}.lang-menu{margin-left:auto;font-size:.92rem;position:relative}.lang-menu>summary{min-height:44px;color:var(--accent);cursor:pointer;align-items:center;gap:.35em;padding:0 .25rem;font-weight:600;list-style:none;display:flex}.lang-menu>summary::-webkit-details-marker{display:none}.lang-menu>summary:after{content:"";border-bottom:2px solid;border-right:2px solid;width:.4em;height:.4em;margin-left:.15em;transform:translateY(-.15em)rotate(45deg)}.lang-menu[open]>summary:after{transform:translateY(.1em)rotate(-135deg)}.lang-menu>summary:hover{color:var(--accent-hover)}.lang-menu-icon{fill:none;stroke:currentColor;stroke-width:1.8px;width:1.15em;height:1.15em}.lang-menu-list{z-index:20;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:11rem;margin:0;padding:.25rem 0;list-style:none;position:absolute;top:100%;right:0;box-shadow:0 8px 24px #00000029}.lang-menu-list a{color:var(--text);padding:.55rem 1rem;text-decoration:none;display:block}.lang-menu-list a:hover{background:var(--accent-soft)}.lang-menu-list a[aria-current=page]{color:var(--accent);font-weight:700}@media (width<=640px){.site-name{flex:1 1 0}.site-tagline{flex-basis:100%;order:1}}.lang-banner{background:var(--note-bg);border-bottom:1px solid var(--border);font-size:.9rem}.lang-banner[hidden]{display:none}.lang-banner-inner{align-items:center;gap:.5rem;padding-top:4px;padding-bottom:4px;display:flex}.lang-banner-message{flex:1;margin:0}.lang-banner a{margin-left:.75em;font-weight:700;display:inline-block}.lang-banner-close{min-width:44px;min-height:44px;font:inherit;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:8px;flex:none;font-size:1.25rem;line-height:1}.lang-banner-close:hover{color:var(--text)}.site-footer{border-top:1px solid var(--border);color:var(--muted);margin-top:48px;padding:24px 0 32px;font-size:.85rem}.site-footer p{margin:.25rem 0}.intro{padding:28px 0 8px}.lead{color:var(--muted);word-break:auto-phrase;margin:0}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-top:20px;padding:20px}.block+.block{margin-top:20px}.block-title{margin:0 0 .5rem;padding:0;font-size:.95rem;font-weight:700}fieldset{border:0;min-width:0;margin:0;padding:0}.hint{color:var(--muted);margin:.5rem 0 0;font-size:.85rem}.field-error{color:var(--error);margin:.5rem 0 0;font-size:.9rem;font-weight:600}.input{font:inherit;font-variant-numeric:tabular-nums;color:var(--text);background:var(--bg);border:1px solid var(--border-strong);border-radius:8px;min-height:44px;padding:.45rem .6rem}.input[aria-invalid=true]{border-color:var(--error)}.input-ratio{text-align:center;width:5.5em}.input-width{width:7em}.ratio-inputs,.range{flex-wrap:wrap;align-items:center;gap:.5rem;display:flex}.range-label{font-weight:600}.checks,.radios{flex-wrap:wrap;gap:.25rem 1.25rem;margin-top:.75rem;display:flex}.radios{margin-top:0}.check{cursor:pointer;align-items:center;gap:.4rem;min-height:44px;display:inline-flex}.check input{width:1.15rem;height:1.15rem;accent-color:var(--accent);margin:0}.ratio-buttons{flex-wrap:wrap;gap:.5rem;display:flex}.ratio-btn{font:inherit;font-variant-numeric:tabular-nums;border:1px solid var(--border-strong);background:var(--surface);min-width:4.5em;min-height:44px;color:var(--text);cursor:pointer;border-radius:999px;padding:.4rem .9rem;font-weight:600}.ratio-btn:hover{border-color:var(--accent)}.ratio-btn[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}.custom-ratio{margin-top:.75rem}.list-summary{margin:0 0 .5rem;font-weight:600}.res-table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%}.res-table th{z-index:1;background:var(--surface);text-align:left;color:var(--muted);border-bottom:2px solid var(--border);padding:.5rem .75rem;font-size:.85rem;font-weight:600;position:sticky;top:0}.res-table td{border-bottom:1px solid var(--border);vertical-align:middle;padding:.45rem .75rem}.res-table tr.is-monitor td{background:var(--monitor-bg)}.resolution{font-size:1.05rem;font-weight:700}.deviation{color:var(--muted);font-size:.78rem;display:block}.badge{background:var(--badge-bg);color:var(--badge-text);vertical-align:.1em;border-radius:4px;margin-right:.4em;padding:.3em .5em;font-size:.75rem;font-weight:700;line-height:1;display:inline-block}.col-copy{text-align:right;white-space:nowrap;width:1%}.copy-btn{font:inherit;border:1px solid var(--border-strong);background:var(--surface);min-width:7.5em;min-height:40px;color:var(--text);cursor:pointer;border-radius:8px;padding:.3rem .75rem;font-size:.85rem}.copy-btn:hover{border-color:var(--accent);color:var(--accent)}.copy-btn.is-copied{border-color:var(--success);color:var(--success)}.list-empty{color:var(--muted);padding:1rem 0}.more-btn{width:100%;font:inherit;border:1px solid var(--accent);background:var(--accent-soft);min-height:44px;color:var(--accent);cursor:pointer;border-radius:8px;margin-top:1rem;font-weight:600;display:block}.more-btn[hidden]{display:none}@media (width<=640px){.card{padding:16px}.range .input-width{width:6em}.res-table thead{clip:rect(0 0 0 0);width:1px;height:1px;position:absolute;overflow:hidden}.res-table,.res-table tbody{display:block}.res-table tr{border-bottom:1px solid var(--border);flex-wrap:wrap;align-items:baseline;gap:.1rem .9rem;min-height:64px;padding:.6rem calc(6.5em + 1.25rem) .6rem .75rem;display:flex;position:relative}.res-table tr:before{content:"";flex-basis:100%;order:2;height:0}.res-table tr.is-monitor{background:var(--monitor-bg)}.res-table td,.res-table tr.is-monitor td{background:0 0;border:0;padding:0;display:block}.res-table .col-name{order:1}.res-table .col-name.is-empty{display:none}.res-table .col-ratio{order:3}.res-table .col-dec{order:4}.res-table .col-copy{width:auto;position:absolute;top:50%;right:.75rem;transform:translateY(-50%)}.res-table td[data-label]:before{content:attr(data-label) " ";color:var(--muted);font-size:.75rem}.res-table .col-ratio,.res-table .col-dec,.res-table .col-name{font-size:.9rem}.res-table .deviation{margin-left:.4em;display:inline}.copy-btn{min-width:6.5em;min-height:44px;padding:.3rem .5rem}}.tabs{border-bottom:2px solid var(--border);gap:.25rem;margin-bottom:1rem;display:flex}.tab{font:inherit;min-height:44px;color:var(--muted);cursor:pointer;white-space:nowrap;background:0 0;border:0;border-bottom:3px solid #0000;margin-bottom:-2px;padding:.5rem 1rem;font-weight:600}.tab:hover{color:var(--text)}.tab[aria-selected=true]{color:var(--accent);border-bottom-color:var(--accent)}.panel-lead{color:var(--muted);margin:0 0 1rem;font-size:.92rem}.form-grid{flex-wrap:wrap;align-items:flex-end;gap:1rem 1.5rem;display:flex}.field-label{margin-bottom:.25rem;padding:0;font-size:.85rem;font-weight:700;display:block}.calc-result{background:var(--bg);border:1px solid var(--border);font-variant-numeric:tabular-nums;border-radius:8px;margin-top:1.25rem;padding:1rem}.calc-result:empty{display:none}.calc-result .field-error{margin:0}.result-list{gap:.4rem;margin:0;display:grid}.result-item{grid-template-columns:10em 1fr;align-items:center;gap:.75rem;display:grid}.result-item dt{color:var(--muted);font-size:.88rem}.result-item dd{flex-wrap:wrap;align-items:center;gap:.5rem .75rem;margin:0;display:flex}.result-main{font-size:1.35rem}.note{background:var(--note-bg);border-radius:6px;margin:.75rem 0 0;padding:.6rem .75rem;font-size:.9rem}@media (width<=640px){.tab{white-space:normal;word-break:auto-phrase;flex:1 1 0;padding:.5rem;font-size:.92rem;line-height:1.4}.result-item{grid-template-columns:1fr;gap:0}}.prose p{margin:0 0 1rem}.prose h2:not(:first-child){margin-top:2rem}.faq{border-top:1px solid var(--border)}.faq-item{border-bottom:1px solid var(--border)}.faq-item summary{cursor:pointer;word-break:auto-phrase;padding:.75rem 0;font-weight:600}.faq-item p{margin:0 0 .75rem}