:root{color-scheme:dark;--ink:#f3f4f1;--muted:#9ca3a3;--soft:#c7cdcd;--line:#2f3434;--paper:#0d0f10;--panel:#171a1b;--panel-strong:#1f2324;--field:#101213;--accent:#e6e7df;--hot:#d7ff62;--warn:#ff806b;--shadow:0 24px 80px rgba(0, 0, 0, 0.42);--tool-title-size:1.55rem;--tool-button-size:0.86rem;--tool-label-size:0.78rem}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:linear-gradient(135deg,rgba(255,255,255,.035),transparent 28%),linear-gradient(315deg,rgba(215,255,98,.045),transparent 26%),var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Hiragino Sans","Yu Gothic",sans-serif}button,input,select,textarea{font:inherit}button{cursor:pointer}[hidden]{display:none!important}.home-screen{width:min(1180px,calc(100vw - 32px));min-height:100vh;margin:0 auto;padding:28px 0;display:grid;align-items:center}.home-shell{padding:32px;border:1px solid var(--line);background:rgba(23,26,27,.94);box-shadow:var(--shadow)}.home-hero{margin-bottom:28px}.home-hero h1{max-width:760px}.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.tool-card{position:relative;display:grid;gap:13px;min-height:260px;padding:24px;border:1px solid var(--line);background:var(--field);color:var(--ink);overflow:hidden;text-align:left}.tool-icon{position:absolute;top:-26px;right:-18px;display:grid;place-items:center;width:150px;height:150px;border:1px solid rgba(215,255,98,.18);background:rgba(215,255,98,.035);color:var(--hot);opacity:.58;transform:rotate(-8deg);transition:opacity .2s,transform .2s}.tool-icon svg{width:82px;height:82px;fill:none;stroke:currentColor;stroke-linecap:round;stroke-linejoin:round;stroke-width:2.5}.tool-card:focus,.tool-card:hover{border-color:var(--hot);outline:0}.tool-card:focus .tool-icon,.tool-card:hover .tool-icon{opacity:.82;transform:rotate(-4deg) translate(-4px,5px)}.tool-kicker{position:relative;z-index:1;color:var(--hot);font-size:.78rem;font-weight:900;letter-spacing:.1em;text-transform:uppercase}.tool-card strong{position:relative;z-index:1;max-width:70%;font-size:clamp(2rem, 4vw, 3.5rem);line-height:.95}.tool-card small{position:relative;z-index:1;max-width:430px;color:var(--soft);font-size:1rem;font-weight:700;line-height:1.6}.app-shell{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:18px;width:calc(100vw - 32px);margin:0 auto;padding:28px 0;align-items:stretch}.site-footer{width:calc(100vw - 32px);margin:0 auto 28px;padding:24px;display:grid;grid-template-columns:minmax(220px,1fr) minmax(320px,1.6fr);gap:20px 32px;border-top:1px solid var(--line);color:var(--soft)}.site-footer-intro strong{color:var(--ink);font-size:1.1rem}.site-footer-intro p,.site-footer-meta{margin:7px 0 0;font-size:.78rem;line-height:1.6}.site-footer-nav{display:flex;align-items:flex-start;justify-content:flex-end;flex-wrap:wrap;gap:10px 18px}.site-footer-nav a,.site-footer-nav button{color:var(--ink);font-size:.78rem;font-weight:850;text-decoration:none}.site-footer-nav a:focus-visible,.site-footer-nav a:hover,.site-footer-nav button:focus-visible,.site-footer-nav button:hover{color:var(--hot)}.site-footer-nav .support-footer-link{color:var(--hot)}.support-trigger-link{appearance:none;padding:0;border:0;background:0 0}.site-footer-meta{grid-column:1/-1;padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}.info-page{min-height:100vh;background:var(--paper)}.info-header,.info-main,.info-page .site-footer{width:min(960px,calc(100vw - 32px))}.info-header{margin:0 auto;padding:28px 0 20px;display:flex;align-items:center;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line)}.brand-link{display:inline-flex;align-items:center;gap:9px;color:var(--hot);font-size:1.2rem;font-weight:950;text-decoration:none}.brand-link::before{content:"";width:30px;height:30px;border-radius:7px;background:url("./assets/brand/fretform-icon.png?v=20260719-transparent-mark-v2") center/contain no-repeat}.back-link{color:var(--soft);font-size:.82rem;font-weight:850;text-decoration:none}.back-link:focus-visible,.back-link:hover{color:var(--ink)}.info-main{margin:0 auto;padding:72px 0 88px}.info-hero{max-width:760px;margin-bottom:58px}.info-hero h1{margin:10px 0 18px;color:var(--ink);font-size:clamp(2.7rem, 8vw, 5.6rem);line-height:.98}.info-hero>p:last-child{color:var(--soft);font-size:1.05rem;line-height:1.8}.info-section{max-width:780px;padding:32px 0;border-top:1px solid var(--line)}.info-section h2{margin:0 0 14px;color:var(--ink);font-size:1.5rem}.info-section h3{margin:28px 0 8px;color:var(--ink);font-size:1rem}.info-section li,.info-section p{color:var(--soft);font-size:.94rem;line-height:1.8}.info-section a{color:var(--hot)}.info-section ol,.info-section ul{padding-left:22px}.tool-guide-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;padding:1px;background:var(--line);list-style:none}.tool-guide-list li{padding:22px;background:var(--panel)}.tool-guide-list strong{display:block;margin-bottom:8px;color:var(--ink)}.updated-date{color:var(--muted);font-size:.78rem;font-weight:800}.workspace-bar{grid-column:1/-1;grid-row:1;display:flex;align-items:end;justify-content:space-between;gap:18px;padding:22px 24px;border:1px solid var(--line);background:rgba(23,26,27,.94);box-shadow:var(--shadow)}.workspace-bar h1{font-size:clamp(2rem, 5cqw, 3.35rem)}.workspace-controls{display:grid;grid-template-columns:auto auto;align-items:center;gap:10px;min-width:min(100%,380px)}.scale-controls{display:grid;grid-template-columns:34px minmax(56px,auto) 34px;align-items:center;border:1px solid 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var(--hot);color:var(--muted);font-size:.8rem;line-height:1.55}.tool-info-support{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}.tool-info-support>div{min-width:0}.support-section-label,.tool-info-support>div>span{color:var(--hot);font-size:.65rem;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.tool-info-support strong{display:block;margin-top:4px;color:var(--ink);font-size:.9rem}.tool-info-support p{margin:4px 0 0;color:var(--muted);font-size:.76rem;line-height:1.45}.support-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:0 0 auto;min-height:40px;padding:0 15px;border:1px solid rgba(215,255,98,.52);background:rgba(215,255,98,.07);color:var(--hot);font-size:.76rem;font-weight:900;text-decoration:none;cursor:pointer}.support-link:focus-visible,.support-link:hover{border-color:var(--hot);background:var(--hot);color:#111314;outline:0}.support-link 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h2{margin:0;color:var(--ink);font-size:1.35rem;letter-spacing:0}.support-choice-close{display:grid;place-items:center;flex:0 0 auto;width:36px;height:36px;padding:0;border:1px solid var(--line);border-radius:6px;background:var(--field);color:var(--soft);font-size:1.25rem;line-height:1}.support-choice-close:focus-visible,.support-choice-close:hover{border-color:var(--soft);color:var(--ink);outline:0}.support-choice-summary{margin:13px 0 20px;max-width:520px;color:var(--muted);font-size:.83rem;line-height:1.55}.support-choice-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.support-choice-option{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:start;gap:12px;min-height:132px;padding:16px;border:1px solid var(--line);border-radius:7px;background:var(--field);color:var(--ink);text-decoration:none;transition:border-color 140ms,background 140ms,transform 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12px;flex-wrap:wrap}.home-routine-picker{display:grid;gap:8px;grid-column:2;width:min(320px,100%);margin-top:16px;color:var(--muted);font-size:.78rem;font-weight:850;letter-spacing:.06em;text-transform:uppercase}.home-routine-picker select,.preset-manager input,.preset-manager select{width:100%;height:42px;border:1px solid var(--line);background:var(--field);color:var(--ink);padding:0 11px;outline:0}.home-routine-picker select:focus,.preset-manager input:focus,.preset-manager select:focus{border-color:var(--hot)}.settings-screen{width:min(980px,calc(100vw - 32px));margin:0 auto;padding:28px 0}.settings-shell{min-height:calc(100vh - 56px);padding:26px;border:1px solid var(--line);background:rgba(23,26,27,.94);box-shadow:var(--shadow)}.layout-shell{min-height:auto}.settings-hero{display:flex;align-items:center;justify-content:space-between;gap:18px}.settings-hero h1{margin:0}.preset-manager{display:grid;grid-template-columns:minmax(180px,0.85fr) minmax(220px,1.1fr);gap:12px;align-items:end;margin:24px 0 14px}.preset-actions{grid-column:1/-1;gap:8px;flex-wrap:wrap}.layout-builder{display:grid;gap:14px;margin-top:24px}.layout-card{display:grid;gap:14px;padding:18px;border:1px solid var(--line);background:#101213}.layout-card-heading{display:flex;align-items:end;justify-content:space-between;gap:14px}.layout-card-heading strong{color:var(--ink);font-size:1rem}.layout-tool-grid{display:grid;gap:8px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.layout-pattern-card,.layout-tool-grid button{min-height:42px;border:1px solid var(--line);background:#242829;color:var(--soft);font-size:var(--tool-button-size);font-weight:950}.layout-pattern-card.active,.layout-tool-grid button.active{border-color:rgba(215,255,98,.65)}.layout-tool-grid button.active{background:var(--hot);color:#101112}.layout-pattern-card.active{background:#151819;color:var(--ink);box-shadow:inset 0 0 0 2px rgba(215,255,98,.5)}.layout-pattern-card.active .layout-mini span{border-color:rgba(215,255,98,.68);background:rgba(215,255,98,.18)}.layout-pattern-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.layout-pattern-card{display:grid;gap:10px;padding:12px;text-align:left}.layout-mini{display:grid;grid-template-columns:repeat(12,1fr);grid-auto-rows:22px;gap:4px}.layout-mini span{border:1px solid rgba(215,255,98,.24);background:rgba(215,255,98,.08)}.layout-mini[data-pattern=one] span{grid-column:1/-1}.layout-mini[data-pattern=four-grid] span:first-child,.layout-mini[data-pattern=four-grid] span:nth-child(3),.layout-mini[data-pattern=three-wide-bottom] span:first-child,.layout-mini[data-pattern=three-wide-top] span:nth-child(2),.layout-mini[data-pattern=two-split] span:first-child{grid-column:1/4}.layout-mini[data-pattern=four-grid] span:nth-child(2),.layout-mini[data-pattern=four-grid] span:nth-child(4),.layout-mini[data-pattern=three-wide-bottom] 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