:root {color-scheme:dark; --bg:#101116; --panel:#1a1c24; --panel2:#20232d; --border:#343742; --muted:#a2a6b4; --txt:#f4f4f8; --accent:#a6f0c3; --blue:#a6b6ff; --warn:#f1ca83; }
    [hidden]{display:none!important}
    * {box-sizing:border-box} body {margin:0;min-height:100vh;background:radial-gradient(ellipse at 75% -10%, #22283a 0,transparent 42%),var(--bg);font-family:Inter,system-ui,'Noto Sans KR',Apple SD Gothic Neo,Arial,sans-serif;color:var(--txt);line-height:1.5}
    .container{max-width:1040px;margin:0 auto;padding:0 22px}header{border-bottom:1px solid #292c37; height:76px;display:flex;align-items:center;justify-content:space-between}
    .brand{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:800;letter-spacing:.055em} .brand-symbol{display:grid;place-items:center;width:38px;height:38px;border-radius:12px;background:#a6f0c31d;color:var(--accent);font-size:25px} .tag{border:1px solid #34453e;color:var(--accent);background:#192920;border-radius:40px;padding:5px 10px;font-size:11px;font-weight:750;letter-spacing:.06em}
    .hero{padding:61px 0 29px}.eyebrow{font-size:12px;font-weight:800;color:var(--accent);letter-spacing:.14em;text-transform:uppercase}h1{font-size:clamp(32px,5vw,50px);letter-spacing:-.045em;line-height:1.17;margin:14px 0 17px;font-weight:820}h1 span{color:var(--accent)}.lead{font-size:15px;color:#bbc0ce;max-width:700px;line-height:1.9;margin:0}main{padding-bottom:50px}.layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}.panel{background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:0 16px 70px #00000012}.panel-title{font-size:15px;font-weight:780;margin:0 0 5px}.hint{font-size:12px;color:var(--muted);line-height:1.75;margin:0 0 17px}
    .dropzone{border:1.5px dashed #596050;background:linear-gradient(145deg,#23302b77,#23263166);border-radius:14px;padding:32px 16px;text-align:center;cursor:pointer;transition:.18s ease;outline-offset:4px;min-height:204px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}.dropzone:hover,.dropzone.dragging{border-color:var(--accent);background:#223a31}.upload-icon{font-size:33px;color:var(--accent)}.dropzone strong{font-size:15px}.dropzone small{font-size:12px;color:var(--muted)}.dropzone input{display:none}.filename{font-size:12px;overflow-wrap:anywhere;color:#e0e3e9;max-width:100%}.privacy{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--muted);margin:12px 0 0}.privacy b{color:var(--accent)}
    .status{margin-top:17px;font-size:12px;min-height:23px;color:var(--muted)}.status.bad{color:#ffa9ad}.progress{height:5px;border-radius:5px;background:#343843;overflow:hidden;margin-top:8px}.progress>div{width:0%;height:100%;background:var(--accent);transition:width .18s}.button{border:0;border-radius:10px;background:var(--accent);color:#12251a;cursor:pointer;font-size:13px;font-weight:800;padding:12px 17px;min-height:42px}.button.secondary{background:#303541;color:var(--txt);border:1px solid #424859}.button:disabled{opacity:.45;cursor:not-allowed}.button:focus-visible,input:focus-visible,.dropzone:focus-visible{outline:2px solid var(--blue);outline-offset:3px}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}
    .result-blank{padding:39px 12px 29px;display:flex;flex-direction:column;align-items:center;gap:12px;color:var(--muted);text-align:center}.result-blank .circle{height:66px;width:66px;border-radius:50%;background:#2b3038;display:grid;place-items:center;font-size:30px}.bigresult{display:flex;align-items:baseline;gap:10px}.bigresult strong{font-size:clamp(48px,7vw,77px);letter-spacing:-.07em;line-height:1.15;color:var(--accent)}.bigresult span{color:var(--muted);font-size:17px;font-weight:700}.result-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.chip{border:1px solid #4a4d5b;border-radius:100px;padding:5px 10px;font-size:11px;color:#c7cad4;background:#262a34}.chip.warn{border-color:#806742;color:var(--warn)}.candidate-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.candidate{background:#262a35;color:#e7eaf1;border:1px solid #424657;border-radius:11px;font-weight:700;padding:9px 11px;cursor:pointer}.candidate.active{border-color:var(--accent);color:var(--accent);background:#21362b}.candidate small{display:block;font-weight:500;font-size:10px;color:var(--muted)}
    .section-gap{margin-top:18px}.calc-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.label{font-size:12px;color:#c2c6d1;display:block;margin-bottom:7px;font-weight:700}.bpm-input{display:flex;align-items:center;gap:8px;margin:12px 0 17px}.bpm-input input{min-width:0;width:100%;background:#11141d;border:1px solid #464a59;color:var(--txt);font-size:26px;font-weight:800;padding:11px 15px;border-radius:12px;font-family:inherit}.bpm-input input:focus{border-color:var(--accent);outline:2px solid #a6f0c333}.bpm-input>span{color:var(--muted);font-size:13px;font-weight:750}.grid-values{display:grid;grid-template-columns:1fr 1fr;gap:10px}.value{background:var(--panel2);border:1px solid #2e3240;border-radius:12px;padding:14px 13px}.value .label{font-size:11px;font-weight:500;margin-bottom:3px}.value strong{font-size:20px;font-variant-numeric:tabular-nums}.value strong small{font-size:12px;color:var(--muted);font-weight:500}.tab{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px}.tap{color:var(--txt);background:#282e3b;border:1px solid #465064;border-radius:12px;padding:16px 20px;cursor:pointer;font-size:16px;font-weight:850;width:100%;letter-spacing:.03em;touch-action:manipulation;user-select:none}.tap:active{background:#3d4b49;border-color:var(--accent)}.info{font-size:12px;color:var(--muted);line-height:1.75;margin-top:12px}.notice{padding:15px 16px;border-left:3px solid var(--warn);background:#302b2166;border-radius:0 12px 12px 0;margin-top:18px;color:#ddd2bc;font-size:12px;line-height:1.8}footer{padding:25px 0 40px;border-top:1px solid #292c37;font-size:12px;color:#9296a5}footer a{color:#bcc5d9}.ad-slot{background:#16181f;border:1px dashed #424656;border-radius:12px;padding:16px;text-align:center;color:#717786;font-size:12px;margin:23px 0}.bottom{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:18px}.number{font-variant-numeric:tabular-nums}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
    @media(max-width:750px){.hero{padding:35px 0 22px}.layout,.bottom{grid-template-columns:1fr}.panel{padding:20px}.container{padding:0 15px}header{height:65px} .dropzone{min-height:180px}}

    /* Variable-tempo analysis */
    .timeline-panel{margin-top:18px}.timeline-title{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}.timeline-explainer{margin:4px 0 17px;font-size:12px;color:var(--muted);line-height:1.8}
    .summary{padding:13px 15px;border-radius:12px;background:#243129;border:1px solid #486554;margin-bottom:18px;font-size:13px;line-height:1.65;color:#d5f7e4}.summary.caution{background:#352b24;border-color:#806442;color:#f4d8af}
    .tempo-track{width:100%;height:51px;display:flex;overflow:hidden;border-radius:12px;border:1px solid #464b57;background:#282d38;gap:2px}.tempo-chunk{position:relative;min-width:2px;border:none;color:#121822;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:0 4px;font-family:inherit;font-weight:800;font-size:13px;white-space:nowrap;overflow:hidden}.tempo-chunk:hover{filter:brightness(1.18)}.tempo-chunk:focus-visible{outline:3px solid white;outline-offset:-3px}.tempo-chunk:nth-child(4n + 1){background:#a6f0c3}.tempo-chunk:nth-child(4n + 2){background:#aac4ff}.tempo-chunk:nth-child(4n + 3){background:#ffd398}.tempo-chunk:nth-child(4n){background:#d6b9f2}.tempo-chunk small{display:block;font-size:10px}
    .ticks{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;margin:8px 1px 18px}.timeline-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px}.segment-card{background:#212530;border:1px solid #3d424f;border-radius:13px;padding:15px}.segment-card h3{font-size:13px;margin:0 0 7px;color:#edf0f6}.segment-card strong{font-size:24px;letter-spacing:-.02em;color:var(--accent)}.segment-card .muted{font-size:11px;color:var(--muted)}.segment-actions{display:flex;gap:6px;flex-wrap:wrap;margin-top:11px}.mini-button{font-size:11px;background:#323a47;border:1px solid #4b5562;color:#edf3f9;border-radius:8px;padding:8px 10px;cursor:pointer;min-height:34px}.mini-button:hover{border-color:var(--accent)}.mini-button.playing{color:var(--accent);border-color:var(--accent)}
    .audio-preview{display:block;width:100%;margin:19px 0 10px;min-height:50px;accent-color:var(--accent)}.audio-hint{font-size:11px;color:var(--muted);line-height:1.7}.analysis-footnote{font-size:12px;color:var(--muted);line-height:1.8;margin:15px 0 0}.timeline-plot-wrap{border:1px solid #353c46;background:#151921;border-radius:12px;padding:12px 12px 7px;margin:0 0 17px}.timeline-plot{width:100%;height:140px;display:block}
    @media(max-width:750px){.tempo-chunk{font-size:11px}.timeline-grid{grid-template-columns:1fr}.timeline-plot{height:125px}}
  
/* --- VOCAL TOOLS · dashboard shell --- */
:root{--bg:#0c1016;--panel:#171d26;--panel2:#202834;--border:#303a48;--muted:#a2afbd;--txt:#f3f7fb;--accent:#b0f4cd;--blue:#a8b9ff;--warn:#f8d392}
body{background:#0b0f15;color:var(--txt);min-height:100vh;font-family:Inter,system-ui,'Noto Sans KR',sans-serif}
a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{transition:background .16s,border-color .16s,transform .16s}button:hover:not(:disabled){filter:brightness(1.07)}
.app-shell{display:flex;min-height:100vh}.sidebar{width:254px;position:fixed;inset:0 auto 0 0;z-index:20;display:flex;flex-direction:column;background:#10151d;border-right:1px solid #28323f;padding:25px 14px 20px;overflow-y:auto;scrollbar-width:thin}.sidebar-brand{display:flex;align-items:center;gap:11px;padding:0 12px 31px}.logo-mark{width:37px;height:37px;display:grid;place-items:center;font-size:22px;background:linear-gradient(135deg,#b3ffcd,#7cd9de);color:#14201e;border-radius:12px;font-weight:850;box-shadow:0 5px 24px #63deab26}.logo-text{font-size:15px;font-weight:860;letter-spacing:.035em}.logo-sub{font-size:9px;color:#8694a3;letter-spacing:.14em;font-weight:750;margin-top:3px}.side-divider{height:1px;background:#26303b;margin:6px 10px 16px}.nav-label{font-size:10px;letter-spacing:.17em;color:#718394;font-weight:800;margin:19px 14px 7px}.nav-link{display:flex;align-items:center;gap:12px;padding:10px 12px;margin:2px 0;color:#a3afbf;min-height:43px;border:1px solid transparent;border-radius:10px;font-size:13px;font-weight:620}.nav-link:hover{background:#1b2730;color:#fff}.nav-link.active{background:linear-gradient(90deg,#2a4a42,#21352f);border-color:#426c59;color:#d5ffe8}.nav-icon{font-size:16px;width:19px;height:21px;display:grid;place-items:center;font-weight:750;flex-shrink:0}.nav-link.active .nav-icon{color:var(--accent)}.sidebar-foot{margin-top:auto;padding:22px 12px 2px}.privacy-mini{border:1px solid #2b4140;background:#152520;border-radius:12px;padding:12px;font-size:11px;line-height:1.7;color:#9dbcae}.privacy-mini strong{display:block;color:#c8ffe2;font-size:12px;margin-bottom:3px}
.main-shell{margin-left:254px;min-width:0;flex:1}.topbar{height:73px;padding:0 clamp(22px,3.7vw,58px);border-bottom:1px solid #27303b;display:flex;justify-content:space-between;align-items:center;background:#111720b8;backdrop-filter:blur(12px);position:sticky;top:0;z-index:10}.crumb{color:#8a9bac;font-size:12px;display:flex;gap:11px;align-items:center}.crumb strong{color:#e2eaf3;font-weight:700}.top-right{display:flex;align-items:center;gap:10px}.top-pill{border:1px solid #2d4b40;background:#172820;border-radius:100px;padding:7px 11px;color:#b6f4cd;font-weight:760;letter-spacing:.03em;font-size:10px}.status-dot{display:inline-block;width:6px;height:6px;background:#88e8ab;border-radius:50%;margin-right:6px;box-shadow:0 0 0 4px #86e0a719}.menu-toggle,.mobile-cover,.close-nav{display:none}.content{max-width:1390px;margin:0 auto;padding:clamp(22px,3vw,44px) clamp(20px,3.7vw,58px) 50px}.tool-page[hidden]{display:none!important}.page-heading{margin-bottom:26px}.kicker{display:flex;align-items:center;gap:9px;color:var(--accent);letter-spacing:.13em;font-size:10px;font-weight:820;text-transform:uppercase;margin-bottom:10px}.page-heading h1{font-size:clamp(26px,3.1vw,38px);margin:0 0 10px;letter-spacing:-.05em;line-height:1.25}.page-heading .desc{max-width:775px;color:#9dabbc;font-size:13px;line-height:1.85;margin:0}.page-heading .desc b{color:#d9efdf}.panel{background:#171d26;border-color:#313b49;border-radius:16px;box-shadow:0 18px 45px #00000010}.layout{grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr)}.timeline-panel{margin-top:20px}.timeline-panel[hidden]{display:none}.dropzone{background:#192e2b66;border-color:#497365}.dropzone:hover{background:#1c4037}.panel-title{font-size:14px}.hint{color:#9fabb9}.value{background:#222b37;border-color:#2e3a47}.result-blank{min-height:247px}.tag{background:#1b3127}.grid-values{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-page .panel.single{max-width:900px}.tool-page .panel.wide{max-width:100%}
/* home */
.welcome{border:1px solid #304b46;background:radial-gradient(ellipse at 87% 13%,#2b665c99,transparent 44%),linear-gradient(124deg,#1e3a38 0%,#182631 64%,#17202d);border-radius:22px;min-height:260px;display:flex;justify-content:space-between;gap:25px;padding:clamp(25px,3.5vw,44px);position:relative;overflow:hidden}.welcome-copy{position:relative;z-index:1;max-width:590px}.welcome .kicker{color:#b6ffdb}.welcome h1{font-size:clamp(32px,4vw,48px);letter-spacing:-.055em;line-height:1.23;margin:12px 0 15px}.welcome h1 em{font-style:normal;color:#aaf8cb}.welcome p{font-size:13px;line-height:1.9;color:#b5c6cb;margin:0 0 23px;max-width:500px}.welcome-art{min-width:230px;flex:1;position:relative;display:flex;justify-content:center;align-items:center}.orbit{height:235px;width:235px;position:absolute;border:1px solid #b5ffe31e;border-radius:50%}.orbit:nth-child(2){height:174px;width:174px;border-color:#b5ffe34e}.orbit:nth-child(3){height:100px;width:100px;background:#b0f4cd1c;box-shadow:0 0 70px #92ddbf2c}.wave-bars{z-index:1;display:flex;align-items:center;gap:6px;height:90px}.wave-bars span{display:block;width:6px;border-radius:7px;background:linear-gradient(0deg,#65dcb3,#cefbe0)}.cta{display:inline-flex;align-items:center;gap:9px;border-radius:10px;background:#b5f5d2;padding:12px 17px;color:#10271c;font-weight:820;font-size:12px;min-height:42px}.cta:hover{background:#d4ffe6}.section-title{margin:33px 0 15px;display:flex;align-items:end;justify-content:space-between;gap:10px}.section-title h2{font-size:18px;letter-spacing:-.025em;margin:0}.section-title p{font-size:11px;color:#8c9aa8;margin:0}.home-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.tool-card{display:block;min-height:167px;border:1px solid #2d3947;border-radius:17px;background:#171e28;padding:21px;transition:border-color .18s,transform .18s,background .18s}.tool-card:hover{border-color:#6da88c;background:#1c2730;transform:translateY(-2px)}.tool-card .glyph{height:41px;width:41px;display:grid;place-items:center;background:#253e37;border:1px solid #33574a;border-radius:12px;color:#b1f4cd;font-size:20px;margin-bottom:15px}.tool-card h3{margin:0 0 7px;font-size:14px;font-weight:770}.tool-card p{margin:0;color:#8e9eaf;font-size:11px;line-height:1.75}.tool-card .card-end{display:flex;justify-content:space-between;align-items:center;margin-top:16px}.card-tag{color:#88c7a4;font-size:10px;font-weight:720}.card-arrow{color:#a6b3bf}.tool-card.wide-card{grid-column:span 2}.feature-strip{margin-top:24px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.feature{border:1px solid #283540;background:#131a22;border-radius:12px;padding:17px 18px}.feature strong{display:block;font-size:12px;margin-bottom:6px}.feature span{font-size:11px;color:#93a4ae;line-height:1.65}.footerline{margin-top:39px;border-top:1px solid #293443;padding:22px 2px;color:#7d8c9d;font-size:11px;line-height:1.7}
/* tools */
.tool-intro{font-size:12px;color:#9daeb9;line-height:1.8}.control-row{display:flex;gap:12px;align-items:end;flex-wrap:wrap;margin:18px 0}.control-row .group{flex:1;min-width:130px}.field{width:100%;border:1px solid #3c4b5b;background:#111923;color:#f1f6f9;padding:11px 13px;min-height:43px;border-radius:10px;outline:none}.field:focus-visible{border-color:#a9f3ce;outline:2px solid #b0f4cd40}.field option{background:#18212b}.large-number{font-size:clamp(38px,6vw,72px);line-height:1.2;font-weight:860;letter-spacing:-.055em;color:var(--accent);font-variant-numeric:tabular-nums}.metric-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#a2b0bd;font-weight:750}.metric-card{background:#1e2931;border:1px solid #344b4b;border-radius:14px;padding:23px}.stats-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}.stats-grid .metric-card{min-width:0}.stats-grid .large-number{font-size:clamp(25px,3.5vw,46px)}.helper{color:#98a9b8;font-size:12px;line-height:1.85;margin:13px 0}.soft-badge{display:inline-flex;align-items:center;gap:5px;border:1px solid #354f43;background:#1c3229;border-radius:40px;padding:6px 10px;font-size:10px;color:#a4ebc7}.tuner-widget{text-align:center;padding:20px 10px 29px}.tuner-note{font-size:clamp(67px,11vw,112px);font-weight:850;letter-spacing:-.05em;color:#f1f7fb;line-height:1.15;margin:7px 0}.tuner-hz{font-size:14px;color:#a3b3c0}.tuner-meter{height:64px;max-width:500px;margin:26px auto 9px;position:relative}.tuner-meter .scale{position:absolute;left:0;right:0;top:30px;height:7px;background:linear-gradient(90deg,#dfad84 0%,#b6d49d 33%,#72e8af 50%,#b6d49d 67%,#dfad84 100%);border-radius:20px}.tuner-meter .center-mark{position:absolute;left:50%;top:9px;width:2px;height:52px;background:#edf9fa73}.tuner-meter .needle{position:absolute;top:15px;left:50%;height:43px;width:3px;background:#f8f8fb;transform:translateX(-50%);box-shadow:0 0 8px #fff6;transition:left .08s;border-radius:3px}.tuner-scale-labels{display:flex;justify-content:space-between;max-width:500px;margin:0 auto;color:#93a3b0;font-size:11px}.key-result{padding:23px;background:#1f322e;border:1px solid #3c6851;border-radius:14px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}.key-result strong{color:#baf8d4;font-size:31px}.range-rail{height:13px;border-radius:16px;background:linear-gradient(90deg,#283c58,#4c7499,#b2eecb,#d4b3ff);position:relative;margin:22px 0 8px}.range-rail .range-fill{position:absolute;top:-6px;bottom:-6px;border-radius:9px;background:#b5ffd733;border:2px solid #dcffe6;left:50%;width:0}.note-grid{display:flex;justify-content:space-between;color:#96a4b3;font-size:10px;gap:8px}.metronome-light{display:flex;gap:12px;justify-content:center;margin:22px 0}.metronome-light span{width:30px;height:30px;border:1px solid #445160;background:#27303a;border-radius:50%;transition:.12s}.metronome-light span.active{background:#b2f3ce;box-shadow:0 0 24px #a2f0bf91}.metronome-light span.accent-beat{border-color:#7dd5a9}
/* responsiveness */
@media(max-width:1100px){.home-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.welcome-art{min-width:140px}.orbit{height:190px;width:190px}.orbit:nth-child(2){height:140px;width:140px}} 
@media(max-width:860px){.sidebar{transform:translateX(-110%);transition:transform .2s;box-shadow:25px 0 70px #0008}.sidebar.open{transform:translateX(0)}.main-shell{margin-left:0}.menu-toggle,.close-nav{display:inline-flex;background:#1d2a32;border:1px solid #344652;color:#d7e9e5;border-radius:9px;align-items:center;justify-content:center;height:38px;width:38px;cursor:pointer}.close-nav{margin-left:auto}.sidebar-brand{padding-bottom:21px}.mobile-cover.open{display:block;position:fixed;inset:0;background:#0009;z-index:19}.topbar{padding:0 20px;gap:12px}.topbar .crumb{margin-right:auto}.welcome-art{min-width:155px}.content{padding:26px 20px 36px}} 
@media(max-width:600px){.content{padding:22px 15px 40px}.topbar{height:62px;padding:0 15px}.welcome{padding:25px;min-height:250px}.welcome-art{position:absolute;right:-65px;top:-5px;opacity:.37;pointer-events:none}.welcome-copy{max-width:100%}.welcome p{max-width:300px}.home-grid{grid-template-columns:1fr}.tool-card.wide-card{grid-column:auto}.tool-card{min-height:145px}.feature-strip{grid-template-columns:1fr}.top-pill{font-size:9px;padding:6px 8px}.layout,.bottom{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr}.panel{padding:18px}.page-heading h1{font-size:27px}.key-result strong{font-size:25px}}

.welcome{background:transparent;border:0;border-bottom:1px solid #293740;border-radius:0;padding:20px 0 40px;min-height:260px}.welcome-art{min-width:200px}.welcome-art svg{width:100%;max-width:540px}.welcome-copy{min-width:51%}.home-grid{gap:18px}.tool-card{min-height:190px;position:relative;border-radius:12px;padding:24px}.tool-card:nth-child(2){border-color:#65567e}.tool-card:nth-child(3){border-color:#426781}.tool-card:first-child{border-color:#568f79;background:#182924}.tool-card:nth-child(2) .glyph{color:#c7a9f7;background:#31283e;border-color:#65567e}.tool-card:nth-child(3) .glyph{color:#a9dcff;background:#243847;border-color:#426781}.tool-card p,.page-heading .desc,.hint,.helper{font-size:14px}.tool-card h3{font-size:20px}.nav-label{font-size:12px;letter-spacing:.04em}.nav-link{font-size:14px}.footerline{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13px}.footerline a:hover{color:var(--accent)}.legal{max-width:800px}.legal p{color:#b5c2cd;line-height:1.9}.legal h2{font-size:19px;margin-top:30px}.searchbox{width:220px;background:#161d25;border:1px solid #34414c;color:#fff;border-radius:8px;padding:10px 14px}.empty-search{padding:20px;color:#a2afbd}@media(max-width:750px){.welcome-copy{min-width:0}.welcome-art{display:none}.welcome h1{font-size:32px}.searchbox{width:130px}.tool-card{min-height:160px}.top-pill{display:none}}

/* v6: performance controls and keyboard on top, settings beneath. */
.scale-primary{display:flex;flex-direction:column;gap:14px}
.scale-primary .scale-buttons{order:0;margin:0;display:flex;gap:9px;flex-wrap:wrap}
.scale-primary .scale-display{order:1;margin:0}
.scale-primary .scale-piano-scroll{order:2}
.scale-settings-heading{display:flex;align-items:end;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:26px 0 14px;padding-top:21px;border-top:1px solid var(--border)}
.scale-settings-heading h2{font-size:18px;letter-spacing:-.02em;font-weight:790;margin:4px 0 0;color:var(--txt)}
.scale-settings-heading p{margin:0;color:var(--muted);font-size:12px;line-height:1.6}
.scale-workspace .scale-presets{margin-bottom:14px}
.scale-workspace .scale-toolbar{margin-bottom:18px}
.scale-field-hint{display:block;font-size:10px;color:var(--muted);line-height:1.55;margin-top:5px}
@media(max-width:590px){.scale-primary .scale-buttons{gap:8px}.scale-primary .scale-buttons .button:first-child{flex:1 1 100%}.scale-settings-heading{margin-top:22px;padding-top:18px}.scale-settings-heading p{width:100%}}


/* VOCAL TOOLS — restrained workspace refresh */
:root{--bg:#111514;--panel:#1a201e;--panel2:#202824;--border:#35413b;--muted:#a4afa8;--txt:#edf1ed;--accent:#b2e6bf;--blue:#b8d6f0;--warn:#e7c58e}
body{background:#111514;color:var(--txt);font-family:Inter,system-ui,'Noto Sans KR',sans-serif}a{text-decoration:none;color:inherit}.sidebar{width:240px;background:#141a17;border-color:#303a33;padding:28px 14px 20px}.sidebar-brand{padding:0 10px 32px;gap:10px}.logo-mark{border-radius:9px;background:#b2e6bf;box-shadow:none;width:34px;height:34px;color:#1a3021}.logo-text{font-size:14px;letter-spacing:.04em}.logo-sub{font-size:9px;color:#91a297}.side-divider{background:#303a33;margin-top:15px}.nav-label{font-size:11px;color:#829387;margin:23px 12px 7px;letter-spacing:0}.nav-link{border-radius:8px;font-size:13px;min-height:42px;padding:10px 12px;gap:11px;color:#b5c0b8}.nav-link:hover{background:#222d26}.nav-link.active{background:#2a3a2e;border:1px solid #3b5341;color:#d7f6df}.nav-link.active .nav-icon{color:#b2e6bf}.nav-icon{font-size:17px}.privacy-mini{border:0;border-top:1px solid #344037;background:none;border-radius:0;padding:16px 0 0;font-size:11px;color:#879b8e}.privacy-mini strong{font-size:11px;color:#b4c4b9;margin-bottom:7px}.main-shell{margin-left:240px}.topbar{height:72px;background:#111514f0;border-color:#2c3730;padding:0 42px;backdrop-filter:blur(10px)}.crumb{font-size:11px;color:#829487}.crumb strong{color:#c5d1c8}.searchbox{width:230px;background:#1a221d;border-color:#344238;border-radius:8px;font-size:12px;padding:11px 14px}.top-pill{border-color:#3b4d3f;background:none;color:#9fb5a5;font-size:9px}.status-dot{background:#a6d8b2;box-shadow:none}.content{max-width:1320px;padding:38px 42px 40px}.welcome{min-height:0;padding:20px 0 37px;border-bottom:1px solid #303b33;gap:35px;background:none}.welcome-copy{min-width:0;max-width:650px}.welcome .kicker{font-size:10px;color:#8caa94;letter-spacing:.13em;margin-bottom:20px}.welcome h1{font-size:clamp(32px,3.3vw,46px);font-weight:750;line-height:1.28;letter-spacing:-.045em;margin:0 0 18px}.welcome h1 em{color:#b2e6bf}.welcome p{font-size:13px;line-height:1.9;color:#a4b4a9;margin:0 0 24px}.hero-actions{display:flex;gap:10px;flex-wrap:wrap}.cta{border:1px solid #b2e6bf;border-radius:8px;background:#b2e6bf;padding:11px 15px;font-size:12px;gap:21px;font-weight:750;color:#1d3323}.cta:hover{background:#c8f0d2}.secondary-cta{background:none;border-color:#46584b;color:#ceded3}.secondary-cta:hover{background:#233329}.home-note{width:240px;flex-shrink:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px}.note-label{font-size:8px;letter-spacing:.16em;color:#7e9785}.note-caption{font-size:11px;color:#97ac9e}.mini-wave{height:112px;display:flex;align-items:center;gap:6px}.mini-wave i{display:block;width:4px;background:#9bcda8;border-radius:3px;opacity:.75}.section-title{margin:28px 0 16px;align-items:center}.section-title h2{font-size:18px;font-weight:730}.section-title h2 span{font-size:12px;border:1px solid #3a4a3f;color:#b2cfba;border-radius:7px;padding:2px 7px;vertical-align:middle;margin-left:8px}.section-title p{font-size:11px;color:#819889}.tool-filters{display:flex;gap:7px;flex-wrap:wrap;margin:0 0 19px}.tool-filters button{font:500 12px system-ui;border:1px solid #344439;border-radius:7px;padding:7px 12px;color:#a1b4a8;background:transparent;cursor:pointer;min-height:35px}.tool-filters button:hover{border-color:#789a80;color:#d8ebdd}.tool-filters button[aria-pressed=true]{background:#b2e6bf;border-color:#b2e6bf;color:#1a3322;font-weight:750}.home-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.tool-card,.tool-card:first-child,.tool-card:nth-child(2),.tool-card:nth-child(3){background:#1a221d;border:1px solid #354339;border-radius:10px;min-height:177px;padding:20px;position:relative;transition:border-color .15s,background .15s}.tool-card:hover{background:#222e25;border-color:#819d89;transform:none}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;gap:10px}.tool-card .glyph,.tool-card:nth-child(2) .glyph,.tool-card:nth-child(3) .glyph{width:32px;height:32px;background:transparent;border:0;border-radius:0;color:#b6d8bf;font-size:25px;margin:0}.card-tag{font-size:10px;color:#8ea696;font-weight:500}.tool-card h3{font-size:16px;letter-spacing:-.03em;font-weight:700;margin:0 0 9px}.tool-card p{font-size:12px;color:#9eafa4;line-height:1.75;padding-right:14px}.card-arrow{position:absolute;bottom:17px;right:17px;font-size:15px;color:#789983}.home-bottom-note{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;margin:23px 0;color:#7f9787;font-size:11px}.home-bottom-note span:first-child{color:#b0c4b6}.footerline{margin-top:30px;padding-top:20px;border-color:#303d34;font-size:11px;color:#879b8e}.footerline a{color:#afc5b6}.page-heading{margin:10px 0 27px}.page-heading h1{font-size:31px;letter-spacing:-.04em}.page-heading .desc{color:#a3b5a9;line-height:1.85}.panel{background:#1a221d;border-color:#36453b;border-radius:12px;box-shadow:none}.helper,.hint,.info{color:#9eafa4;line-height:1.8}.button{border-radius:8px;background:#b2e6bf;min-height:43px}.button.secondary{background:#29382f;border-color:#415648}.field,.bpm-input input{background:#121b16;border-color:#405446;border-radius:8px}.metric-card,.value{background:#202b24;border-color:#354b3c;border-radius:10px}.dropzone{border-color:#647e6b;background:#22342955;border-radius:10px}.dropzone:hover{background:#2a4431}.notice{border-color:#c2a570;background:#302c2155;border-radius:0 8px 8px 0;color:#d7c9ad;font-size:12px}.large-number{font-size:clamp(24px,3vw,38px);overflow-wrap:anywhere}.tuner-note{font-size:clamp(26px,4vw,46px);letter-spacing:-.04em}.soft-badge{background:#223d2c;color:#b5d8bf;border-color:#46634f}.empty-search{border:1px dashed #4d6655;border-radius:10px;padding:35px;text-align:center;color:#acbeb2;font-size:13px}button:focus-visible,a:focus-visible{outline:2px solid #b2e6bf;outline-offset:3px}@media(min-width:1600px){.home-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}@media(max-width:1100px){.home-note{display:none}.home-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topbar{padding:0 28px}.content{padding:28px}.welcome-copy{max-width:none}}@media(max-width:860px){.main-shell{margin-left:0}.sidebar{width:260px}.menu-toggle,.close-nav{background:#223027;border-color:#425547;color:#d8e7dc}.topbar{padding:0 20px}.content{padding:28px 22px}.welcome{padding-top:8px}.welcome h1{font-size:36px}}@media(max-width:600px){.topbar{height:64px;padding:0 15px;gap:10px}.crumb{font-size:10px;gap:7px}.crumb>span{display:none}.searchbox{width:125px;padding:9px 10px;font-size:11px}.content{padding:25px 16px 32px}.welcome{padding-bottom:29px}.welcome h1{font-size:32px}.welcome p{font-size:12px;max-width:none}.welcome .kicker{font-size:9px;margin-bottom:17px}.section-title p{display:none}.tool-filters{gap:5px}.tool-filters button{font-size:11px;padding:7px 9px}.home-grid{grid-template-columns:1fr;gap:10px}.tool-card{min-height:142px;padding:18px}.card-top{margin-bottom:11px}.tool-card p{padding-right:20px}.card-tag{font-size:10px}.page-heading h1{font-size:27px}.top-pill{display:none}.home-bottom-note{flex-direction:column}.footerline{font-size:11px;gap:10px}.hero-actions .cta{font-size:11px;gap:13px;padding:10px 13px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}



/* ==========================================================
   VOCAL TOOLS — continuation build: dark/light theme refresh
   All musical analysis stays on-device; no API or CDN.
   ========================================================== */
:root, :root[data-theme="dark"] {
  color-scheme:dark;
  --bg:#0c1221;--panel:#161f31;--panel2:#1c2840;--border:#303e57;
  --txt:#f0f4ff;--muted:#a6b3cf;--accent:#9aabff;--blue:#a6b8ff;--warn:#ffd08f;
  --surface:#161f31;--surface-raised:#1b263d;--surface-2:#212d46;
  --side:#11192a;--header:#0c1221f2;--soft:#202b47;--hover:#24314c;
  --accent-soft:#28365a;--accent-border:#5168a6;--accent-contrast:#111830;
  --nav:#bdc8df;--faint:#8291ac;--chart-grid:#3c4861;--chart-muted:#aab8d0;
  --chart-warn:#ffc37f;--warnbg:#38301f;--warnbd:#7d6342;
  --input:#111b2c;--card:#182337;--shell-border:#2c3a51;--dark-glow:#162343;
  --purple:#c7b2ff;--purple-bg:#292440;
}
:root[data-theme="light"] {
  color-scheme:light;
  --bg:#f7f9fe;--panel:#fff;--panel2:#f1f5fd;--border:#dce3f0;
  --txt:#1b2742;--muted:#586a87;--accent:#455bd5;--blue:#4159c9;--warn:#98601d;
  --surface:#fff;--surface-raised:#fff;--surface-2:#f0f4fc;
  --side:#f0f4fd;--header:#ffffffed;--soft:#e9eeff;--hover:#e4eaf8;
  --accent-soft:#e7ebff;--accent-border:#bdc9fb;--accent-contrast:#fff;
  --nav:#4b5e7c;--faint:#677b99;--chart-grid:#dbe2f0;--chart-muted:#64728e;
  --chart-warn:#bd6e28;--warnbg:#fff6e8;--warnbd:#e8c49b;
  --input:#fff;--card:#fff;--shell-border:#dce3ee;--dark-glow:#edf1ff;
  --purple:#7549b6;--purple-bg:#f0eaff;
}
html { background:var(--bg); }
body,.app-shell,.main-shell{background:var(--bg);color:var(--txt)}
.sidebar{background:var(--side);border-color:var(--shell-border)}
.topbar{background:var(--header);border-color:var(--shell-border)}
.logo-mark{background:var(--accent);color:var(--accent-contrast)}
.logo-text,.brand,.crumb strong,.section-title h2,.tool-card h3,.panel-title,.page-heading h1,.value strong,.tuner-note,.range-current{color:var(--txt)}
.logo-sub,.nav-label,.crumb,.privacy-mini,.privacy-mini strong,.note-label,.note-caption,.section-title p,.home-bottom-note,.card-tag,.card-arrow{color:var(--faint)}
.side-divider,.footerline,.welcome{border-color:var(--shell-border)}
.nav-link{color:var(--nav)}
.nav-link:hover{background:var(--hover);color:var(--txt)}
.nav-link.active{color:var(--accent);background:var(--accent-soft);border-color:var(--accent-border)}
.nav-link.active .nav-icon,.nav-link:hover .nav-icon{color:var(--accent)}
.privacy-mini,.privacy-mini strong{border-color:var(--shell-border)}
.welcome .kicker,.page-heading .kicker,.eyebrow{color:var(--accent)}
.welcome h1,.welcome p,.page-heading .desc,.section-title h2,.tool-card p{color:var(--txt)}
.welcome h1 em{color:var(--accent);font-style:normal}
.welcome p,.page-heading .desc,.tool-card p,.hint,.helper,.info,.audio-hint,.analysis-footnote,.timeline-explainer,.timeline-explainer b,.lead,.tool-intro{color:var(--muted)}
.mini-wave i{background:var(--accent)}
.cta,.button,.tool-filters button[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-contrast)}
.cta:hover,.button:hover:not(:disabled){filter:brightness(1.07)}
.cta.secondary-cta,.button.secondary,.mini-button,.candidate,.tap{background:var(--surface-2);border-color:var(--border);color:var(--txt)}
.cta.secondary-cta:hover,.button.secondary:hover,.mini-button:hover,.candidate:hover,.tap:hover{background:var(--hover);border-color:var(--accent-border)}
.panel,.tool-card,.tool-card:first-child,.tool-card:nth-child(2),.tool-card:nth-child(3){background:var(--surface);border-color:var(--border);box-shadow:none;color:var(--txt)}
.tool-card:hover{background:var(--hover);border-color:var(--accent-border)}
.tool-card .glyph,.tool-card:nth-child(2) .glyph,.tool-card:nth-child(3) .glyph{color:var(--accent);background:none;border:0}
.tool-card:nth-child(2) .glyph{color:var(--purple)}
.tool-card:nth-child(3) .glyph{color:var(--blue)}
.card-arrow{color:var(--accent)}
.tool-filters button{background:var(--surface);border-color:var(--border);color:var(--nav)}
.tool-filters button:hover{color:var(--accent);border-color:var(--accent-border)}
.section-title h2 span,.chip,.soft-badge,.tag{background:var(--soft);border-color:var(--border);color:var(--accent)}
.searchbox,.field,.bpm-input input{background:var(--input);border-color:var(--border);color:var(--txt)}
.searchbox::placeholder,.field::placeholder{color:var(--faint)}
.field option{background:var(--surface);color:var(--txt)}
.field:focus-visible,.bpm-input input:focus,.searchbox:focus-visible{border-color:var(--accent);outline:2px solid var(--accent-border)}
.metric-card,.value,.candidate,.result-blank .circle,.segment-card,.timeline-plot-wrap{background:var(--surface-2);border-color:var(--border)}
.value .label,.metric-label,.label,.result-blank,.ticks,.audio-hint,.notice,.segment-card .muted,.tuner-hz,.tuner-scale-labels,.note-grid{color:var(--muted)}
.value strong,.metric-card strong,.tuner-note,.segment-card h3{color:var(--txt)}
.bigresult strong,.large-number,.segment-card strong,.key-result strong{color:var(--accent)}
.key-result,.summary{background:var(--accent-soft);border-color:var(--accent-border);color:var(--txt)}
.key-result .metric-label{color:var(--muted)}
.summary.caution,.notice{background:var(--warnbg);border-color:var(--warnbd);color:var(--txt)}
.dropzone{background:var(--soft);border-color:var(--accent-border)}
.dropzone:hover,.dropzone.dragging{background:var(--hover);border-color:var(--accent)}
.dropzone strong,.filename{color:var(--txt)}
.dropzone small,.upload-icon,.privacy b{color:var(--accent)}
.status,.privacy,.progress,.result-meta,.info,.hint,.candidate small,.tap-result{color:var(--muted)}
.progress{background:var(--surface-2)}.progress>div{background:var(--accent)}
.candidate.active{background:var(--accent-soft);color:var(--accent);border-color:var(--accent)}
.tuner-meter .scale{background:linear-gradient(90deg,var(--chart-warn),var(--purple) 29%,var(--accent) 50%,var(--purple) 71%,var(--chart-warn))}
.tuner-meter .needle{background:var(--txt);box-shadow:0 0 10px var(--accent)}
.tuner-meter .center-mark{background:var(--faint)}
.range-rail{background:linear-gradient(90deg,var(--surface-2),var(--accent),var(--purple))}
.range-rail .range-fill{background:color-mix(in srgb,var(--accent) 27%,transparent);border-color:var(--accent)}
.metronome-light span{background:var(--surface-2);border-color:var(--border)}
.metronome-light span.active{background:var(--accent);box-shadow:0 0 22px var(--accent-border)}
.metronome-light span.accent-beat{border-color:var(--accent-border)}
.timeline-plot-wrap{background:var(--input)}
.tempo-track{background:var(--surface-2);border-color:var(--border)}
.tempo-chunk:nth-child(4n + 1){background:#a7b7ff}.tempo-chunk:nth-child(4n + 2){background:#c2b0f9}.tempo-chunk:nth-child(4n + 3){background:#a7cfff}.tempo-chunk:nth-child(4n){background:#e0b8ef}
.top-pill{background:var(--soft);border-color:var(--border);color:var(--muted)}
.status-dot{background:var(--accent);box-shadow:none}
.legal p,.legal h2,.footerline,.footerline a{color:var(--muted)}
.footerline a:hover{color:var(--accent)}
.empty-search{background:var(--surface);border-color:var(--border);color:var(--muted)}
.menu-toggle,.close-nav{background:var(--surface-2);border-color:var(--border);color:var(--txt)}
.theme-toggle{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex:none;cursor:pointer;white-space:nowrap;min-height:38px;border:1px solid var(--border);border-radius:9px;padding:7px 12px;color:var(--txt);background:var(--surface-2);font-weight:650;font-size:12px}
.theme-toggle:hover{background:var(--hover);border-color:var(--accent-border)}
.theme-toggle .theme-icon{font-size:16px;line-height:1}
.home-bottom-note span:first-child{color:var(--muted)}
button:focus-visible,a:focus-visible,.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:850px){.mobile-cover.open{background:#0d1527aa}}
@media(max-width:600px){.theme-toggle{padding:8px;min-width:37px}.theme-label{display:none}.top-right{gap:6px}.searchbox{width:min(32vw,130px)}}
@media(prefers-reduced-motion:reduce){.theme-toggle{transition:none}}

/* Vocal scale piano — adapt to dark and light mode */
.scale-workspace{overflow:hidden}
.scale-toolbar{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-bottom:22px;align-items:end}
.scale-toolbar .group{min-width:0}
.scale-toolbar .field{max-width:100%}
.scale-volume{display:block;width:100%;height:38px;cursor:pointer;accent-color:var(--accent)}
.scale-display{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:19px 21px;margin-bottom:18px}
.scale-display strong{font-size:clamp(22px,3.5vw,34px);font-weight:790;color:var(--accent);letter-spacing:-.03em;line-height:1.5}
.scale-display .helper{margin:3px 0 0}
.scale-count{text-align:right}.scale-count strong{display:block;font-size:22px}
.scale-piano-scroll{overflow-x:auto;overscroll-behavior-x:contain;border:1px solid var(--border);border-radius:12px;padding:12px;background:var(--soft);scrollbar-width:thin}
.scale-piano{position:relative;display:flex;width:100%;min-width:540px;height:208px;user-select:none;touch-action:pan-x}
.piano-key{appearance:none;cursor:pointer;border:1px solid var(--border);position:relative;flex:1 1 0;min-width:0;padding:0;transition:background .08s,border-color .08s}
.piano-key.white{height:100%;background:linear-gradient(180deg,#fff,#e9edf6);border-radius:0 0 6px 6px;color:#48556f;z-index:1;box-shadow:inset 0 -5px 7px #9da9bd33}
.piano-key.white:first-child{border-top-left-radius:6px}.piano-key.white:last-of-type{border-top-right-radius:6px}
.piano-key.black{position:absolute;top:0;z-index:3;height:62%;flex:none;border-radius:0 0 5px 5px;background:linear-gradient(170deg,#202a43,#0d1423);border-color:#090e18;color:#e7efff;box-shadow:0 5px 7px #07112b55;transform:translateX(-50%)}
.piano-key span{position:absolute;bottom:10px;left:50%;transform:translateX(-50%);font-size:11px;font-weight:700;white-space:nowrap;pointer-events:none}
.piano-key.black span{bottom:9px;font-size:10px}
.piano-key.white:hover,.piano-key.white.active{background:linear-gradient(180deg,#d2daff,#9baeff);color:#13214b}
.piano-key.black:hover,.piano-key.black.active{background:linear-gradient(180deg,#8e9fff,#526adb);border-color:#5062b2}
.piano-key:focus-visible{outline:3px solid var(--accent);outline-offset:-3px;z-index:4}
.scale-buttons{display:flex;gap:9px;flex-wrap:wrap;margin:18px 0 2px}
@media(max-width:960px){.scale-toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:590px){.scale-toolbar{grid-template-columns:1fr;gap:12px}.scale-display{padding:14px}.scale-piano{height:166px}.scale-piano-scroll{padding:8px}.scale-count strong{font-size:16px}.scale-buttons .button{flex:1 1 auto}}

/* Scale v5 — 6 consistent settings, then recommendation presets */
.scale-toolbar{align-items:stretch;gap:12px;margin-bottom:16px}
.scale-toolbar>.group{min-width:0;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:15px;display:flex;flex-direction:column;justify-content:flex-start}
.scale-toolbar>.group>.label{min-height:23px;margin-bottom:8px}
.scale-toolbar>.group .field{width:100%;margin:0}
.scale-sound-card{gap:5px}
.scale-sound-card>.label{margin-bottom:3px!important}
.scale-sound-line{min-width:0}
.scale-sound-line>.label{font-size:12px;margin:0 0 1px}
.scale-sound-card .scale-volume{height:24px}
.scale-audio-hint{font-size:12px;line-height:1.6;color:var(--muted);margin:9px 0 0}
#scalePause:disabled{opacity:.48;cursor:not-allowed}
.scale-presets{padding:17px;border:1px solid var(--border);border-radius:12px;background:var(--surface-raised);margin-bottom:20px}
.scale-presets-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.scale-presets-title strong{font-weight:760;color:var(--txt);font-size:14px}
.scale-presets-title p{color:var(--muted);font-size:11px;line-height:1.5;margin:5px 0 0}
.scale-range-badge{background:var(--accent-soft);border:1px solid var(--accent-border);border-radius:30px;padding:6px 10px;font-size:11px;font-weight:680;color:var(--accent);white-space:nowrap}
.scale-preset-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.scale-preset{appearance:none;text-align:left;display:flex;flex-direction:column;align-items:flex-start;gap:6px;min-width:0;border:1px solid var(--border);background:var(--panel);border-radius:10px;padding:13px 14px;color:var(--txt);cursor:pointer;transition:background .12s,border-color .12s}
.scale-preset:hover{background:var(--hover);border-color:var(--accent-border)}
.scale-preset-name{font-size:13px;font-weight:720}
.scale-preset-range{font-size:11px;color:var(--muted);line-height:1.45}
.scale-preset-hint{font-size:11px;line-height:1.65;color:var(--muted);margin:11px 0 0}
.scale-preset:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media(max-width:850px){.scale-toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:600px){.scale-toolbar{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.scale-toolbar>.group{padding:11px}.scale-preset-options{grid-template-columns:1fr;gap:8px}.scale-preset{flex-direction:row;align-items:center;justify-content:space-between;gap:8px;padding:11px}.scale-presets{padding:12px}.scale-presets-title{align-items:flex-start}.scale-preset-range{text-align:right}}
@media(max-width:500px){
  .scale-toolbar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scale-toolbar>.group:nth-child(1),.scale-toolbar>.group:nth-child(2),.scale-toolbar>.group:nth-child(5),.scale-toolbar>.group:nth-child(6){grid-column:span 2}
  .scale-sound-card{gap:9px}
}
@media(max-width:350px){.scale-toolbar{grid-template-columns:1fr}.scale-toolbar>.group{grid-column:span 1!important}}


/* Scale pause: true two-bar icon rather than the Roman numeral II. */
#scalePause{display:inline-flex;align-items:center;justify-content:center;gap:7px}
#scalePause .pause-icon{display:block;width:16px;height:16px;flex:none;fill:currentColor}

/* Independent tool pages: readable usage instructions and contact link. */
.seo-guide{margin-top:24px;padding:25px 28px;max-width:950px}
.seo-guide h2{margin:0 0 14px;font-size:20px;color:var(--txt)}
.seo-guide h3{margin:24px 0 8px;font-size:16px;color:var(--txt)}
.seo-guide ol{margin:0;padding-left:22px;color:var(--muted);line-height:1.95;font-size:14px}
.seo-guide li{margin-bottom:6px}
.seo-guide p{line-height:1.85;color:var(--muted);font-size:14px}
.seo-guide a{color:var(--accent);text-decoration:underline}
.footerline a[href^="mailto:"]{overflow-wrap:anywhere}
@media(max-width:600px){.seo-guide{padding:18px 16px}.seo-guide h2{font-size:18px}}