:root{
  --blue:#4577be;
  --blue-dark:#4577be;
  --blue-deep:#4577be;
  --blue-tint:#EDF3FB;
  --ink:#22304A;
  --text:#3A4658;
  --muted:#66788F;
  --line:#E3EAF4;
  --bg:#FFFFFF;
  --bg-soft:#F6F9FC;
  --ok:#1F9D55;
  --ok-tint:#EAF7F0;
  --warn:#C77700;
  --warn-tint:#FdF3E3;
  --bad:#CC4433;
  --bad-tint:#FBEDEA;
  --gold:#E8A13D;
  --sq-light:#FFFFFF;
  --sq-dark:#4577BE;
  --hl-last:rgba(233,196,90,.62);
  --hl-select:rgba(110,165,255,.68);
  --dot:rgba(28,46,74,.26);
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(34,48,74,.05),0 6px 20px rgba(34,48,74,.06);
  --font:'Segoe UI','PT Sans','Open Sans',Roboto,Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);font-size:16px;line-height:1.55}
h1,h2,h3,h4{color:var(--ink);line-height:1.22;margin:0 0 .45em;font-weight:700}
h1{font-size:clamp(26px,4vw,38px)}
h2{font-size:clamp(21px,3vw,28px)}
h3{font-size:clamp(17px,2.2vw,20px)}
p{margin:0 0 1em}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1140px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:13px}

.page-head{padding:26px 0 8px}
.kicker{
  display:inline-block;color:var(--blue-dark);font-weight:700;font-size:12px;
  letter-spacing:.09em;text-transform:uppercase;margin-bottom:6px;
}
.lede{color:var(--muted);max-width:62ch}
.accent{color:var(--blue)}

.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
}
.card--accent{border-top:3px solid var(--blue)}
.card-pad{padding:20px 22px}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:9px 20px;border-radius:var(--radius-btn);
  border:1px solid transparent;background:var(--blue);color:#fff;
  font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;
  transition:background .15s ease,border-color .15s ease,color .15s ease;
  user-select:none;-webkit-user-select:none;touch-action:manipulation;
}
.btn:hover{background:var(--blue-dark)}
.btn:focus-visible{outline:3px solid rgba(61,109,181,.35);outline-offset:2px}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn--ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn--ghost:hover{border-color:var(--blue);color:var(--blue-dark);background:var(--blue-tint)}
.btn--soft{background:var(--blue-tint);color:var(--blue-deep)}
.btn--soft:hover{background:#DFEBF9}
.btn--ok{background:var(--ok)}.btn--ok:hover{background:#188A49}
.btn--sm{min-height:36px;padding:5px 14px;font-size:13.5px;border-radius:8px}

.chip{
  display:inline-flex;align-items:center;gap:6px;min-height:40px;
  padding:6px 16px;border-radius:999px;border:1px solid var(--line);
  background:#fff;color:var(--ink);font-family:inherit;font-size:14px;
  font-weight:600;cursor:pointer;transition:all .15s ease;
  user-select:none;-webkit-user-select:none;touch-action:manipulation;
}
.chip:hover{border-color:var(--blue);color:var(--blue-dark)}
.chip[aria-pressed="true"],.chip.is-on{background:var(--blue);border-color:var(--blue);color:#fff}
.chip:focus-visible{outline:3px solid rgba(61,109,181,.35);outline-offset:2px}

.badge{
  display:inline-block;font-size:11px;font-weight:700;letter-spacing:.07em;
  text-transform:uppercase;padding:3px 9px;border-radius:999px;
  background:var(--blue-tint);color:var(--blue-deep);
}
.badge--ok{background:var(--ok-tint);color:#157347}
.badge--warn{background:var(--warn-tint);color:#9A5B00}
.badge--bad{background:var(--bad-tint);color:#A93226}

.stat-row{display:flex;flex-wrap:wrap;gap:10px}
.stat{
  flex:1 1 90px;background:var(--bg-soft);border:1px solid var(--line);
  border-radius:12px;padding:10px 14px;text-align:center;min-width:86px;
}
.stat b{display:block;font-size:clamp(18px,2.6vw,24px);color:var(--ink);line-height:1.2}
.stat span{font-size:12px;color:var(--muted);letter-spacing:.03em;text-transform:uppercase}

.bar{height:8px;border-radius:999px;background:#E9EFF7;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--blue);border-radius:999px;transition:width .3s ease}
.bar--ok>i{background:var(--ok)}

.banner{
  display:none;align-items:center;gap:10px;border-radius:12px;
  padding:11px 16px;font-weight:600;margin:12px 0;
}
.banner.show{display:flex}
.banner--ok{background:var(--ok-tint);color:#14683C}
.banner--bad{background:var(--bad-tint);color:#A93226}
.banner--info{background:var(--blue-tint);color:var(--blue-deep)}

.modal-back{
  position:absolute;inset:0;background:rgba(28,42,66,.45);
  display:none;align-items:center;justify-content:center;z-index:40;
  border-radius:inherit;
}
.modal-back.show{display:flex}
.modal-box{
  background:#fff;border-radius:14px;padding:22px 26px;max-width:min(92%,420px);
  text-align:center;box-shadow:0 18px 50px rgba(20,35,60,.25);
}

.cdb{
  position:relative;width:100%;aspect-ratio:1/1;
  border-radius:10px;overflow:hidden;
  box-shadow:0 0 0 1px var(--line),0 10px 26px rgba(34,48,74,.10);
  user-select:none;-webkit-user-select:none;container-type:inline-size;
}
.cdb-grid{position:absolute;inset:0;display:grid;grid-template:repeat(8,1fr)/repeat(8,1fr)}
.cdb-sq{position:relative;border:0;padding:0;background:transparent;cursor:default;font:inherit;touch-action:manipulation}
.cdb-sq.l{background:var(--sq-light)}
.cdb-sq.d{background:var(--sq-dark)}
.cdb--play .cdb-sq{cursor:pointer}
.cdb-sq:focus-visible{outline:3px solid #FFD867;outline-offset:-3px;z-index:5}
.cdb-sq.last::before{content:'';position:absolute;inset:0;background:var(--hl-last)}
.cdb-sq.sel::before{content:'';position:absolute;inset:0;background:var(--hl-select)}
.cdb-sq.hint::before{content:'';position:absolute;inset:0;background:rgba(31,157,85,.45)}
.cdb-sq.bad::before{content:'';position:absolute;inset:0;background:rgba(204,68,51,.5)}
.cdb-sq.chk::before{content:'';position:absolute;inset:0;
  background:radial-gradient(circle at 50% 50%,rgba(210,60,45,.85) 0%,rgba(210,60,45,.28) 58%,transparent 72%)}
.cdb-sq.target::after{
  content:'';position:absolute;left:50%;top:50%;width:30%;height:30%;
  transform:translate(-50%,-50%);border-radius:50%;background:var(--dot);
}
.cdb-sq.target.cap::after{width:94%;height:94%;background:transparent;
  border:calc(var(--cell)*0.085) solid var(--dot);}
.cdb-coord{position:absolute;z-index:3;font-weight:700;line-height:1;pointer-events:none;font-size:calc(var(--cell)*0.2)}
.cdb-coord.f{right:5%;bottom:5%}
.cdb-coord.r{left:6%;top:6%}
.cdb-pieces{position:absolute;inset:0;pointer-events:none}
.cdb.blind .cdb-pieces{visibility:hidden}
.cdb-pc{
  position:absolute;left:0;top:0;display:flex;align-items:center;justify-content:center;
  width:var(--cell);height:var(--cell);
  font-size:calc(var(--cell)*.848);font-size:10.6cqw;line-height:1;
  will-change:transform;transform:translate(calc(var(--cell)*var(--x)),calc(var(--cell)*var(--y)));
}
.cdb-pc.anim{transition:transform .16s ease}
.cdb-pc.pop{animation:cdbpop .18s ease}
.cdb-pc.fade{opacity:0;transition:opacity .17s ease}
.cdb.drag-enabled .cdb-sq{touch-action:pan-y}
.cdb.drag-enabled .cdb-sq.can-drag{touch-action:none}
.cdb.is-dragging .cdb-pc.drag-source{opacity:.22}
.cdb-drag-ghost{
  position:fixed;z-index:10020;display:flex;align-items:center;justify-content:center;
  pointer-events:none;line-height:1;filter:drop-shadow(0 5px 7px rgba(18,34,58,.3));
}
.cdb-drag-ghost.w{color:#fff;-webkit-text-stroke:.043em #14161b;text-shadow:0 1px 1px rgba(20,24,28,.45);paint-order:stroke fill}
.cdb-drag-ghost.b{color:#000;-webkit-text-stroke:.02em rgba(255,255,255,.5);text-shadow:0 1px 1px rgba(255,255,255,.2);paint-order:stroke fill}
.cdb-pc.w{color:#fff;-webkit-text-stroke:.043em #14161b;text-shadow:0 1px 1px rgba(20,24,28,.45);paint-order:stroke fill}
.cdb-pc.b{color:#000;-webkit-text-stroke:.02em rgba(255,255,255,.5);text-shadow:0 1px 1px rgba(255,255,255,.2);paint-order:stroke fill}
@keyframes cdbpop{from{opacity:.35}to{opacity:1}}
.cdb-promo{
  position:absolute;z-index:30;left:0;right:0;top:0;bottom:0;
  display:none;align-items:center;justify-content:center;gap:2%;
  background:rgba(28,42,66,.45);
}
.cdb-promo.show{display:flex}
.cdb-promo button{
  flex:0 1 auto;width:19%;aspect-ratio:3/4;border:0;border-radius:12px;cursor:pointer;
  background:#fff;box-shadow:0 8px 22px rgba(20,35,60,.3);
  font-size:calc(var(--cell)*0.72);font-family:inherit;line-height:1;
}
.cdb-promo button:hover{background:var(--blue-tint)}

.layout-2col{display:grid;grid-template-columns:minmax(300px,520px) minmax(280px,1fr);gap:26px;align-items:start}
.layout-board-side{display:grid;grid-template-columns:minmax(280px,480px) minmax(260px,1fr);gap:26px;align-items:start}
@media(max-width:860px){
  .layout-2col,.layout-board-side{grid-template-columns:1fr}
  .container{padding:0 14px}
}

.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}
.tool-card{display:flex;flex-direction:column;padding:20px 20px 18px;gap:8px}
.tool-card h3{margin:2px 0 0}
.tool-card p{margin:0 0 10px;color:var(--muted);font-size:14.5px;flex-grow:1}
.tool-card .btn{align-self:flex-start}

.section-title{display:flex;align-items:baseline;justify-content:space-between;gap:14px;flex-wrap:wrap;margin:34px 0 14px}
.section-title p{margin:0;color:var(--muted);font-size:14.5px;max-width:52ch}

.timer{height:10px;border-radius:999px;background:#E9EFF7;overflow:hidden;margin:12px 0 4px}
.timer>i{display:block;height:100%;background:var(--gold);border-radius:999px;width:100%}
.timer>i.low{background:var(--bad)}

.kbd{
  display:inline-block;min-width:24px;text-align:center;padding:2px 8px;
  border-radius:7px;border:1px solid var(--line);background:#fff;
  color:var(--muted);font-size:12px;font-weight:700;font-family:inherit;
}
.prompt-box{
  background:var(--blue-tint);border-left:4px solid var(--blue);
  border-radius:10px;padding:14px 18px;
  font-size:clamp(22px,3vw,32px);font-weight:800;color:var(--ink);
  letter-spacing:.05em;min-height:64px;display:flex;align-items:center;justify-content:center;
}
.choice-row{display:flex;gap:12px;margin-top:14px}
.choice-row .btn{flex:1;font-size:17px;padding:14px 10px}
.hud-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.hud-chip{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;
  padding:6px 16px;font-size:14px;font-weight:600;color:var(--muted);
}
.hud-chip b{color:var(--ink)}
.opt-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:14px}
.opt-grid button{
  min-height:52px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-family:inherit;font-size:17px;font-weight:700;color:var(--ink);cursor:pointer;
  transition:border-color .15s,background .15s;touch-action:manipulation;
}
.opt-grid button:hover{border-color:var(--blue);color:var(--blue-dark)}
.opt-grid button.ok{border-color:var(--ok);background:var(--ok-tint);color:#14683C}
.opt-grid button.no{border-color:var(--bad);background:var(--bad-tint);color:#A93226}

.coach-card{border-left:4px solid var(--gold)}
.coach-card h3{display:flex;align-items:center;gap:8px}

.stars{font-size:26px;letter-spacing:3px;color:#D5DFEC}
.stars b{color:var(--gold)}

.level-map{display:grid;grid-template-columns:repeat(auto-fill,minmax(74px,1fr));gap:10px}
.level-cell{
  aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  font-family:inherit;font-weight:800;font-size:18px;color:var(--ink);cursor:pointer;
  transition:transform .12s,border-color .15s;touch-action:manipulation;position:relative;
}
.level-cell small{font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.02em}
.level-cell:hover{transform:translateY(-2px);border-color:var(--blue)}
.level-cell.done{border-color:var(--ok);background:var(--ok-tint)}
.level-cell.locked{opacity:.45;cursor:not-allowed}
.level-cell .lv-stars{position:absolute;bottom:6px;font-size:11px;letter-spacing:1px}
.level-cell .lv-stars b{color:var(--gold)}

.steps-nav{display:flex;align-items:center;gap:10px;margin-top:14px}
.ls-transition{margin:10px 0 0;padding:9px 11px;border-left:3px solid var(--blue);background:var(--blue-tint);color:var(--ink);font-size:.84rem;line-height:1.45}
.ls-transition.is-reference{border-left-color:var(--muted);background:var(--bg-soft)}
.step-dots{display:flex;gap:6px;flex:1;justify-content:center}
.step-dot{width:9px;height:9px;border-radius:50%;background:#D5DFEC}
.step-dot.on{background:var(--blue)}

.note-bar{
  display:flex;gap:10px;background:#FdF6E3;border-left:4px solid var(--gold);
  padding:12px 16px;border-radius:0 10px 10px 0;margin-top:18px;font-size:14px;color:#7A5A18;
}

.tabbar{
  position:sticky;top:0;z-index:20;background:var(--blue-tint);
  border-bottom:1px solid var(--line);padding:10px 0;
}
.tabbar-in{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tabbtn{
  min-height:40px;padding:7px 18px;border-radius:999px;border:1px solid transparent;
  background:transparent;color:var(--blue-deep);font-family:inherit;font-size:14px;
  font-weight:700;cursor:pointer;transition:all .15s ease;touch-action:manipulation;
}
.tabbtn:hover{background:#DFEBF9}
.tabbtn.is-on{background:var(--blue);color:#fff}
.progress-pill{
  margin-left:auto;background:#fff;border:1px solid var(--line);border-radius:999px;
  padding:6px 16px;font-size:13px;font-weight:700;color:var(--muted);
}
.progress-pill b{color:var(--blue-dark)}


body[data-practice-tool="calculation"] .tabbar-in{justify-content:center;position:relative}
body[data-practice-tool="calculation"] .progress-pill{margin-left:0}
@media(min-width:781px){
  body[data-practice-tool="calculation"] .progress-pill{position:absolute;right:24px}
}
@media(max-width:780px){
  body[data-practice-tool="calculation"] .progress-pill{flex-basis:100%;width:max-content;margin:2px auto 0;text-align:center}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}


body.practice-tool-page :is([class*="kicker"],[class*="eyebrow"],[class*="posmeta"]){text-transform:none;letter-spacing:.01em}
@media(min-width:901px){
  body.practice-tool-page .pt-hero{padding:16px 0 14px}
  body.practice-tool-page .pt-hero .pt-crumbs{justify-content:flex-start;margin-bottom:6px}
  body.practice-tool-page .pt-hero h1{
    max-width:none;margin:0 0 6px;text-align:left;
    font-size:clamp(1.45rem,2.1vw,2.05rem);line-height:1.12
  }
  body.practice-tool-page .pt-hero :is(.lede,h1+p){
    max-width:80ch;margin:0;text-align:left;font-size:.92rem;line-height:1.5
  }
  body.practice-tool-page .section-title{display:block;margin:14px 0 12px;padding-bottom:8px;border-bottom-width:1px}
  body.practice-tool-page .section-title h2{margin:0 0 3px;font-size:1.15rem;letter-spacing:-.01em}
  body.practice-tool-page .section-title p{font-size:.84rem;max-width:110ch}
  body.practice-tool-page .tabbar{padding:6px 0}
  .practice-tool-page .pt-hero :is(.bf-chips,.bv-chips,.calc-chips,.eg-chips,.pc-chips,.pj-chips,.si-chips){display:none}
  .practice-tool-page .pt-hero :is(.calc-hero-grid,.pj-hero-grid,.si-hero-grid){display:block}
  .practice-tool-page .pt-hero :is(.calc-demo,.pj-demo,.si-demo){display:none}
}

@media(min-width:1081px){
  body.practice-tool-page .layout-board-side{grid-template-columns:minmax(380px,min(520px,calc(100vh - 320px))) minmax(280px,1fr)}
  body.practice-tool-page .cdb{width:100%;max-width:none}
}




:root{
  --blue:#4577BE; --blue-2:#467bc4; --blue-deep:#4577be;
  --ink:#32373c; --ink-soft:#444; --line:#dde8f0; --white:#fff; --mist:#eff7f9;
  --red:#d6453f; --orange:#e08a17; --green:#2e9e57; --neutral:#6b8aa8;
  --shadow-sm:0 1px 3px rgba(50,55,60,.08);
  --shadow-md:0 10px 30px -12px rgba(69,119,190,.35);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Fira Sans','Fira Fallback',Arial,Helvetica,sans-serif;color:var(--ink-soft);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{color:var(--ink);line-height:1.2;font-weight:700}
.board-bg{background-image:linear-gradient(rgba(255,255,255,.92),rgba(255,255,255,.97)),repeating-conic-gradient(var(--mist) 0% 25%,var(--white) 0% 50%);background-size:auto,56px 56px}


header.site-header{background:var(--white);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:14px}
.site-branding{display:flex;align-items:center;gap:12px;min-width:0}
.site-branding img{height:44px;width:auto;flex:none}
.site-branding .txt{line-height:1.15}
.site-branding .domain{font-weight:800;font-size:1.08rem;color:var(--ink);display:block}
.site-branding .tagline{font-size:.72rem;color:var(--ink-soft);letter-spacing:.04em;display:block}
nav.menu{display:flex;gap:4px;font-weight:500;font-size:.95rem;align-items:center}
nav.menu > .nav-item > a{color:var(--ink-soft);white-space:nowrap;display:inline-block;padding:24px 7px}
nav.menu > .nav-item > a:hover{color:var(--blue);text-decoration:none}
nav.menu .has-sub::after{content:" ▾";font-size:.7em;color:var(--blue-2)}
.nav-item{position:relative}
.dropdown{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(6px);background:var(--white);border:1px solid var(--line);border-radius:12px;box-shadow:0 18px 40px -18px rgba(50,55,60,.35);padding:20px 22px;opacity:0;visibility:hidden;transition:opacity .15s ease,transform .15s ease;z-index:60}
.nav-item:hover .dropdown,.nav-item:focus-within .dropdown{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown .dh{font-size:.72rem;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--blue-deep);margin:0 0 10px;white-space:nowrap}
.dropdown .dh a{color:var(--blue-deep)}
.dropdown ul{list-style:none;display:flex;flex-direction:column;gap:7px;font-size:.9rem}
.dropdown ul a{color:var(--ink-soft);white-space:nowrap}
.dropdown ul a:hover{color:var(--blue);text-decoration:none}
.dropdown .view-all{display:block;margin-top:10px;font-weight:600;font-size:.85rem;white-space:nowrap}
.dropdown.mega{display:grid;grid-template-columns:repeat(3,auto);gap:10px 28px}
.social-links{display:inline-flex;align-items:center;gap:2px;margin-left:8px;flex-shrink:0}
.social-links .soc{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;color:var(--ink-soft);transition:color .15s,background .15s,transform .15s}
.social-links .soc svg{width:20px;height:20px;fill:currentColor}
.social-links .soc:hover{transform:translateY(-1px);background:var(--mist)}
.social-links .soc.yt:hover{color:#f00}
.social-links .soc.dc:hover{color:#5865f2}
.social-links .soc.rd:hover{color:#ff4500}
.mobile-menu .social-row{display:flex;gap:20px;padding:14px 4px 4px}
.mobile-menu .social-row a{display:inline-flex;color:var(--blue-deep)}
.mobile-menu .social-row svg{width:26px;height:26px;fill:currentColor}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);font-size:1.3rem;cursor:pointer;place-items:center;font-family:inherit;flex:none}
.mobile-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--white);border-bottom:1px solid var(--line);box-shadow:0 18px 30px -18px rgba(50,55,60,.3);padding:10px 24px 20px;z-index:49;max-height:calc(100vh - 72px);overflow:auto}
body.nav-open .mobile-menu{display:block}
.mobile-menu a{display:block;padding:11px 0;color:var(--ink);font-weight:600;border-bottom:1px solid var(--line)}
.mobile-menu a.sub{padding-left:18px;font-weight:400;color:var(--ink-soft);font-size:.93rem}
.mobile-menu a:hover{color:var(--blue);text-decoration:none}
@media(max-width:920px){nav.menu{display:none}.burger{display:grid}.nav{gap:10px}}
@media(max-width:480px){.site-branding{gap:9px}.site-branding img{height:38px}.site-branding .domain{font-size:1rem;white-space:nowrap}.site-branding .tagline{display:none}.burger{width:40px;height:40px;font-size:1.2rem}}
.nav-search{width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--blue-deep);font-size:1.15rem;cursor:pointer;display:grid;place-items:center;flex:none;font-family:inherit;transition:border-color .15s,color .15s;margin-left:4px}
.nav-search:hover{border-color:var(--blue);color:var(--blue)}
@media(max-width:920px){.nav-search{margin-left:auto;margin-right:0}}
@media(max-width:480px){.nav-search{width:40px;height:40px;font-size:1.05rem}}
.cd-search{position:fixed;inset:0;background:rgba(50,55,60,.55);z-index:200;display:none;padding:16px}
.cd-search.open{display:block}
.cd-search-box{max-width:640px;margin:10vh auto 0;background:var(--white);border-radius:16px;overflow:hidden;box-shadow:0 30px 80px -20px rgba(0,0,0,.5)}
.cd-search-top{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--line)}
.cd-search-top .ic{color:var(--blue-2);font-size:1.3rem}
.cd-search-top input{flex:1;border:0;outline:none;font-family:inherit;font-size:1.05rem;color:var(--ink);background:transparent}
.cd-search-top .esc{border:1px solid var(--line);border-radius:7px;background:var(--mist);color:var(--ink-soft);font-size:.72rem;font-weight:700;padding:4px 8px;cursor:pointer;font-family:inherit}
.cd-results{max-height:62vh;overflow:auto}
.cd-result{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 18px;border-top:1px solid var(--line);color:var(--ink)}
.cd-result:hover{background:var(--mist);text-decoration:none}
.cd-result b{font-weight:600;font-size:.96rem}
.cd-result .k{font-size:.66rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase;color:var(--blue-deep);background:var(--mist);border:1px solid var(--line);padding:3px 8px;border-radius:5px;flex:none}
.cd-empty{padding:22px 18px;color:var(--ink-soft);font-size:.92rem}


footer{background:var(--ink);color:#cfd6dd;padding:54px 0 30px;font-size:.9rem;margin-top:60px}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.15fr;gap:26px 22px;margin-bottom:34px}


footer .foot-h{color:#fff;font-size:.95rem;font-weight:700;margin:0 0 14px}
footer ul{list-style:none;display:flex;flex-direction:column;gap:8px}
footer a{color:#cfd6dd}
footer a:hover{color:#fff}
.foot-brand img{height:40px;width:auto;background:#fff;border-radius:8px;padding:4px;object-fit:contain}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:#9aa4ad}


.cb{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr));aspect-ratio:1;container-type:inline-size;border-radius:8px;overflow:hidden;background:#fff;box-shadow:inset 0 0 0 1px rgba(50,55,60,.18)}
.cb .sq{display:grid;place-items:center;position:relative;min-width:0;min-height:0}
.cb .sq.l{background:#fff}
.cb .sq.d{background:var(--blue)}
.cb .sq.hl::after{content:"";position:absolute;inset:0;background:rgba(246,196,83,.5)}
.cb .pc{font-size:10.4cqw;line-height:1;z-index:1;user-select:none}

.cb .pc.w{color:#fff;-webkit-text-stroke:.07em #14161b;text-shadow:none;paint-order:stroke fill}
.cb .pc.b{color:#14161b;-webkit-text-stroke:.035em rgba(255,255,255,.85);text-shadow:none;paint-order:stroke fill}





.hb-hero{background:var(--white);border-bottom:1px solid var(--line);padding:40px 0 34px}
.hb-hero.tinted{background:linear-gradient(180deg,var(--mist) 0%,var(--white) 100%)}
.hb-hero-in{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:44px;align-items:center}

.hb-hero-in > *{min-width:0}
.hb-hero h1{font-size:clamp(2rem,4vw,2.85rem);font-weight:800;letter-spacing:-.02em;margin:12px 0 12px;line-height:1.1}
.hb-hero .lede{font-size:1.06rem;max-width:62ch;line-height:1.65}
.hb-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.7rem;font-weight:800;letter-spacing:.11em;text-transform:uppercase;color:var(--blue-deep);background:var(--mist);border:1px solid var(--line);border-radius:999px;padding:5px 13px}
.hb-cta{display:flex;flex-wrap:wrap;gap:11px;margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:11px 20px;font-size:.94rem;font-weight:700;font-family:inherit;cursor:pointer;border:1.5px solid transparent;transition:background .14s,border-color .14s,color .14s}
.btn-solid{background:var(--blue);color:#fff}
.btn-solid:hover{background:var(--blue-deep);text-decoration:none;color:#fff}
.btn-ghost{border-color:var(--line);background:var(--white);color:var(--ink)}
.btn-ghost:hover{border-color:var(--blue);color:var(--blue);text-decoration:none}
.hb-facts{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:20px;font-size:.86rem}
.hb-facts span{display:inline-flex;align-items:center;gap:7px}
.hb-facts b{color:var(--green);font-weight:800}
.hb-hero-art{background:var(--white);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);padding:14px;position:relative}
.hb-hero-art img{width:100%;height:auto;aspect-ratio:1;display:block;border-radius:10px;background:#fff}
.hb-hero-art figcaption{margin-top:11px;font-size:.82rem;color:var(--ink-soft);text-align:center;line-height:1.45}
.hb-hero-art .tag{position:absolute;top:-10px;left:22px;background:var(--white);border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.66rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--blue-deep);box-shadow:var(--shadow-sm)}
@media(max-width:980px){.hb-hero-in{grid-template-columns:minmax(0,1fr);gap:26px}.hb-hero-art{max-width:420px;margin:0 auto}}


.hb-sec{max-width:1180px;margin:0 auto;padding:38px 24px 0}
.hb-sec-h{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;border-bottom:2px solid var(--line);padding-bottom:9px;margin-bottom:20px}
.hb-sec-h h2{font-size:1.62rem;font-weight:800;letter-spacing:-.015em}
.hb-sec-h .sub{font-size:.92rem;color:var(--ink-soft);max-width:72ch}
.hb-sec-h .cnt{margin-left:auto;font-size:.8rem;font-weight:700;color:var(--blue-deep);background:var(--mist);border:1px solid var(--line);border-radius:999px;padding:3px 12px;white-space:nowrap}


.hb-picks{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
@media(max-width:980px){.hb-picks{grid-template-columns:1fr}}
.hb-pick{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);overflow:hidden;color:var(--ink-soft);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}
.hb-pick:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#c2d6ec;text-decoration:none}
.hb-pick-art{position:relative;background:var(--mist);border-bottom:1px solid var(--line);padding:16px 16px 14px;display:grid;place-items:center}
.hb-pick-art img{width:100%;max-width:216px;height:auto;aspect-ratio:1;display:block;border-radius:10px;background:#fff}
.hb-pick-n{position:absolute;top:12px;left:12px;width:26px;height:26px;border-radius:50%;background:var(--blue);color:#fff;font-size:.76rem;font-weight:800;display:grid;place-items:center;box-shadow:0 0 0 3px var(--white)}
.hb-pick-body{padding:16px 18px 17px;display:flex;flex-direction:column;flex:1}
.hb-pick h3{font-size:1.16rem;font-weight:800;color:var(--ink);letter-spacing:-.01em;margin-bottom:5px}
.hb-pick .who{font-size:.72rem;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--blue-deep);margin-bottom:9px}
.hb-pick p{font-size:.9rem;line-height:1.55;margin:0}
.hb-pick .spec{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:6px}
.hb-pick .spec li{font-size:.84rem;padding-left:20px;position:relative;line-height:1.45}
.hb-pick .spec li::before{content:"✓";position:absolute;left:0;top:0;color:var(--green);font-weight:800;font-size:.8rem}
.hb-pick .go{margin-top:auto;padding-top:14px;font-size:.9rem;font-weight:700;color:var(--blue);display:inline-flex;align-items:center;gap:7px}
.hb-pick .go i{font-style:normal;transition:transform .15s}
.hb-pick:hover .go i{transform:translateX(4px)}


.hb-faces{display:grid;grid-template-columns:repeat(auto-fill,minmax(104px,1fr));gap:18px 12px}
.hb-face{display:flex;flex-direction:column;align-items:center;gap:9px;text-align:center;font-size:.78rem;font-weight:600;color:var(--ink);line-height:1.3;transition:color .14s}
.hb-face:hover{text-decoration:none;color:var(--blue-deep)}
.hb-face img{width:100%;max-width:100px;height:auto;aspect-ratio:1;border-radius:50%;object-fit:cover;object-position:50% 20%;border:1px solid var(--line);background:var(--mist);display:block;transition:border-color .14s,box-shadow .14s,transform .14s}
.hb-face:hover img{border-color:var(--blue);box-shadow:0 0 0 4px rgba(69,119,190,.14);transform:translateY(-2px)}
.hb-face span{display:block;min-height:2.6em}
.hb-face .era{display:block;font-size:.68rem;font-weight:600;color:var(--ink-soft);min-height:auto}
@media(max-width:560px){.hb-faces{grid-template-columns:repeat(auto-fill,minmax(84px,1fr))}.hb-face img{max-width:80px}.hb-face{font-size:.72rem}}


.hb-ladder{border-top:1px solid var(--line)}
.hb-rung{display:grid;grid-template-columns:118px minmax(0,1.1fr) minmax(0,1.6fr) auto;gap:6px 22px;align-items:center;padding:14px 10px;border-bottom:1px solid var(--line);transition:background .12s}
.hb-rung:hover{background:#f7fbff;text-decoration:none}
.hb-rung .elo{font-size:1.05rem;font-weight:800;color:var(--ink);font-variant-numeric:tabular-nums}
.hb-rung .elo small{display:block;font-size:.7rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--blue-deep)}
.hb-rung .nm{font-size:.95rem;font-weight:700;color:var(--ink)}
.hb-rung .ds{font-size:.86rem;line-height:1.5}
.hb-rung .arrow{color:var(--blue);font-weight:800}
.hb-meter{display:flex;gap:3px;margin-top:5px}
.hb-meter i{width:15px;height:5px;border-radius:2px;background:var(--line)}
.hb-meter i.on{background:var(--blue)}
@media(max-width:820px){.hb-rung{grid-template-columns:92px 1fr;row-gap:4px}.hb-rung .ds{grid-column:1/-1}.hb-rung .arrow{display:none}}


.hb-tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--white);box-shadow:var(--shadow-sm)}
.hb-tbl{width:100%;border-collapse:collapse;font-size:.9rem;min-width:660px}
.hb-tbl th,.hb-tbl td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.5}
.hb-tbl thead th{background:var(--mist);font-size:.7rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--blue-deep);white-space:nowrap}
.hb-tbl tbody tr:last-child td{border-bottom:0}
.hb-tbl td:first-child{font-weight:700;color:var(--ink);white-space:nowrap}
.hb-tbl a{font-weight:700}


.hb-tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,268px),1fr));gap:16px}
.hb-tile{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);padding:15px 16px 15px;color:var(--ink-soft);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;min-width:0}
.hb-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c2d6ec;text-decoration:none}
.hb-tile.soon{opacity:.72;pointer-events:none}
.hb-tile-top{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.hb-tile-top img{width:64px;height:64px;flex:none;border-radius:9px;display:block;background:#fff}
.hb-tile h3{font-size:1.02rem;font-weight:800;color:var(--ink);letter-spacing:-.01em;line-height:1.25}
.hb-tile .k{display:block;font-size:.68rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--blue-deep);margin-bottom:2px}
.hb-tile p{font-size:.86rem;line-height:1.5;margin:0;flex:1}
.hb-tile .meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:11px}
.hb-tile .meta i{font-style:normal;font-size:.68rem;font-weight:700;letter-spacing:.03em;border:1px solid var(--line);background:var(--white);color:var(--ink);border-radius:5px;padding:3px 8px;display:inline-flex;align-items:center;gap:6px}
.hb-tile .meta i::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--blue)}
.hb-tile .meta i.free::before{background:var(--green)}
.hb-tile .meta i.soon::before{background:var(--neutral)}
.hb-tile .go{margin-top:12px;font-size:.86rem;font-weight:700;color:var(--blue)}


.hb-tr{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,224px),1fr));gap:16px}
.hb-trc{display:flex;flex-direction:column;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm);padding:13px 13px 14px;color:var(--ink-soft);transition:transform .15s ease,box-shadow .15s ease,border-color .15s ease;min-width:0}
.hb-trc:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:#c2d6ec;text-decoration:none}
.hb-trc img{width:100%;height:auto;aspect-ratio:1;display:block;border-radius:9px;background:#fff}
.hb-trc b{display:block;margin-top:11px;color:var(--ink);font-size:.96rem;font-weight:700;line-height:1.25;text-align:center}
.hb-trc .mv{display:block;margin-top:7px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.73rem;font-weight:700;color:var(--blue-deep);background:var(--mist);border:1px solid var(--line);border-radius:7px;padding:4px 7px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;text-align:center}
.hb-trc .go{margin-top:auto;padding-top:11px;font-size:.83rem;font-weight:700;color:var(--blue);text-align:center}


.hb-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media(max-width:820px){.hb-steps{grid-template-columns:1fr;gap:16px}}
.hb-step{border-top:2px solid var(--blue);padding-top:14px}
.hb-step .n{font-size:1.9rem;font-weight:800;color:var(--blue);line-height:1;font-variant-numeric:tabular-nums}
.hb-step h3{font-size:1.04rem;font-weight:800;margin:9px 0 6px;letter-spacing:-.01em}
.hb-step p{font-size:.9rem;line-height:1.6;margin:0}


.hb-callout{border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:0 14px 14px 0;background:var(--white);padding:16px 20px;box-shadow:var(--shadow-sm)}
.hb-callout p{font-size:.9rem;margin:0;line-height:1.6}
.hb-callout p+p{margin-top:9px}
.hb-callout b{color:var(--ink)}
.hb-nots{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:9px}
.hb-nots li{font-size:.88rem;line-height:1.55;padding-left:23px;position:relative}
.hb-nots li::before{content:"✕";position:absolute;left:0;top:0;color:#b6bec6;font-weight:700;font-size:.8rem}


.hb-faq{border-top:1px solid var(--line)}
.hb-faq details{border-bottom:1px solid var(--line)}
.hb-faq summary{cursor:pointer;list-style:none;padding:14px 34px 14px 0;font-size:1rem;font-weight:700;color:var(--ink);position:relative}
.hb-faq summary::-webkit-details-marker{display:none}
.hb-faq summary::after{content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);color:var(--blue);font-weight:800;font-size:1.2rem}
.hb-faq details[open] summary::after{content:"−"}
.hb-faq summary:hover{color:var(--blue-deep)}
.hb-faq .a{padding:0 0 15px;font-size:.92rem;line-height:1.65;max-width:80ch}
.hb-faq .a p+p{margin-top:9px}


.crumbs{font-size:.82rem;color:var(--ink-soft)}
.crumbs a{color:var(--blue)}
.crumbs span{margin:0 6px;color:var(--line)}

@media(prefers-reduced-motion:reduce){
  .hb-pick,.hb-tile,.hb-trc,.hb-face img,.hb-pick .go i{transition:none}
  .hb-pick:hover,.hb-tile:hover,.hb-trc:hover{transform:none}
}
@media(max-width:640px){
  .hb-sec{padding-left:16px;padding-right:16px}
  .btn{min-height:44px}
  .hb-pick .go,.hb-tile .go,.hb-trc .go{min-height:44px;display:inline-flex;align-items:center}
  .hb-sec-h h2{font-size:1.38rem}
}



@media(max-width:1080px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:24px 20px}}
@media(max-width:820px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.foot-grid{grid-template-columns:1fr;gap:22px}}
.foot-brand p{margin-top:13px;max-width:38ch;font-size:.88rem;line-height:1.6}
.foot-brand img{height:40px;width:auto;background:#fff;border-radius:8px;padding:4px;object-fit:contain}
.foot-social{display:flex;gap:10px;margin-top:15px}
.foot-social a{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;color:#cfd6dd;background:rgba(255,255,255,.07);transition:color .15s,background .15s}
.foot-social a:hover{color:#fff;background:rgba(255,255,255,.16)}
.foot-social svg{width:19px;height:19px;fill:currentColor}


:root{
  --blue:#4577BE;--blue-dark:#4577be;--blue-deep:#4577be;--blue-tint:#eff7f9;
  --ink:#32373c;--text:#444;--muted:#66788f;--line:#dde8f0;--bg-soft:#f5f9fb;
  --warn:#4577be;--warn-tint:#edf4fd;--gold:#4577BE;--hl-last:#dce9fa;
  --sq-light:#fff;--sq-dark:#4577BE;--font:'Fira Sans','Fira Fallback',Arial,Helvetica,sans-serif;
}
[hidden]{display:none!important}
body.practice-tool-page{font-family:var(--font);color:var(--text);min-width:0;overflow-x:hidden}
.practice-tool-page .site-header .wrap{max-width:1540px}
.practice-tool-page .site-header .site-branding{flex:0 0 auto}
.practice-tool-page .site-header nav.menu{min-width:0}
.practice-tool-page .container{width:100%;max-width:1180px;margin:0 auto;padding-left:24px;padding-right:24px}
.practice-tool-page .pt-hero{background:#fff;border-bottom:1px solid var(--line);padding:20px 0 18px}
.practice-tool-page .pt-hero h1{font-size:clamp(1.65rem,3.3vw,2.2rem);font-weight:800;letter-spacing:-.025em;margin:5px 0 7px}
.practice-tool-page .pt-hero .lede{max-width:76ch;font-size:.95rem;line-height:1.52;margin:0;color:var(--ink-soft)}
.practice-tool-page .pt-hero .accent{color:var(--blue)}
.practice-tool-page .pt-hero .kicker{margin-top:10px;color:var(--blue-deep)}
.pt-crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:.78rem;color:var(--muted);margin-bottom:3px}
.pt-crumbs a{font-weight:600}
.pt-hero-tools{display:flex;align-items:center;gap:10px;margin-top:13px}
.practice-tool-page main.container{padding-top:18px;padding-bottom:38px}
.practice-tool-page .tabbar{top:72px;z-index:35;background:rgba(239,247,249,.96);backdrop-filter:blur(10px)}
.practice-tool-page .card{box-shadow:var(--shadow-sm)}
.practice-tool-page .layout-board-side{grid-template-columns:minmax(300px,520px) minmax(280px,1fr)}
.practice-tool-page .cdb{max-width:520px;margin-left:auto;margin-right:auto;border-radius:12px}
.practice-tool-page .btn{min-height:44px}
.practice-tool-page .btn--ghost{border-color:var(--line);background:#fff;color:var(--ink)}
.practice-tool-page .btn--soft{background:var(--mist);color:var(--blue-deep)}
.practice-tool-page .btn--ok{background:var(--green);color:#fff}
.practice-tool-page .prompt-box{background:var(--mist);border-left-color:var(--blue)}
.practice-tool-page .coach-card{border-left-color:var(--blue)}
.practice-tool-page .timer>i{background:var(--blue)}
.practice-tool-page .badge--warn{background:var(--blue-tint);color:var(--blue-deep)}
.practice-tool-page .stars b,.practice-tool-page .level-cell .lv-stars b{color:var(--blue)}
.practice-tool-page .note-bar{background:var(--mist);border-left-color:var(--blue)}
.practice-tool-page .cdb-sq:focus-visible{outline-color:#7fa7dc}
.pt-note-card{border-left:3px solid var(--blue);border-radius:0 10px 10px 0;background:var(--mist);padding:13px 14px;color:var(--text)}
.pt-note-card h3,.pt-note-card b{display:block;color:var(--ink);margin:0 0 4px;font-size:.92rem}
.pt-note-card p{margin:0;font-size:.84rem;line-height:1.5}
.pt-sound-slot{margin-left:auto;display:inline-flex;align-items:center}
.pt-sound-slot .btn{min-height:36px;padding:6px 10px;font-size:.78rem}
.practice-tool-page .section-title{border-bottom:2px solid var(--line);padding-bottom:10px}
.practice-tool-page .section-title h2{font-weight:800;letter-spacing:-.015em}
.pt-faq-section{padding:8px 0 8px}
.pt-section-head{border-bottom:2px solid var(--line);padding-bottom:9px;margin-bottom:14px}
.pt-section-head h2{font-size:clamp(1.45rem,3vw,1.8rem);font-weight:800;letter-spacing:-.015em}
.pt-faq{display:grid;gap:8px}
.pt-faq details{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden}
.pt-faq summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;padding:13px 16px;cursor:pointer;color:var(--ink);font-weight:700}
.pt-faq summary::-webkit-details-marker{display:none}
.pt-faq summary::after{content:'+';color:var(--blue);font-size:1.1rem;font-weight:800}
.pt-faq details[open] summary::after{content:'-'}
.pt-faq details[open] summary{background:var(--mist)}
.pt-faq .answer{padding:14px 16px 16px;max-width:82ch}
.pt-faq .answer p{margin:0}
.pt-related{padding:30px 0 0}
.pt-related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.pt-related-card{display:flex;flex-direction:column;gap:5px;border:1px solid var(--line);border-radius:12px;padding:15px;background:#fff;color:var(--ink);min-width:0}
.pt-related-card:hover{border-color:var(--blue);text-decoration:none;box-shadow:var(--shadow-sm)}
.pt-related-card b{font-size:.94rem}
.pt-related-card span{font-size:.79rem;color:var(--muted)}
.pt-related-card[aria-current='page']{border-color:var(--blue);background:var(--mist)}
.pt-mobile-dock{display:none}
.practice-tool-page .modal-back{z-index:100}
.practice-tool-page footer{margin-top:48px}
@media(max-width:1080px){.practice-tool-page .layout-board-side{grid-template-columns:minmax(280px,480px) minmax(260px,1fr)}}
@media(max-width:1320px){
  .practice-tool-page .site-header nav.menu{display:none}
  .practice-tool-page .site-header .burger{display:grid}
  .practice-tool-page .site-header .nav-search{margin-left:auto;margin-right:0}
}
@media(max-width:1500px){
  .practice-tool-page .site-header nav.menu{font-size:.9rem}
  .practice-tool-page .site-header nav.menu>.nav-item>a{padding-left:5px;padding-right:5px}
  .practice-tool-page .site-header .social-links{margin-left:2px}
}
@media(max-width:860px){
  .practice-tool-page .layout-board-side,.practice-tool-page .layout-2col{grid-template-columns:minmax(0,1fr)}
  .practice-tool-page .cdb{width:min(100%,520px)}
  .pt-related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px),(max-height:520px) and (max-width:960px){
  html{scroll-padding-bottom:calc(var(--pt-dock-clearance,70px) + env(safe-area-inset-bottom))}
  body.practice-tool-page{padding-bottom:calc(var(--pt-dock-clearance,70px) + env(safe-area-inset-bottom))}
  .practice-tool-page .container{padding-left:14px;padding-right:14px}
  .practice-tool-page .site-header .wrap{padding-left:14px;padding-right:14px}
  .practice-tool-page .pt-hero{padding:16px 0 15px}
  .practice-tool-page .pt-hero h1{font-size:1.65rem;line-height:1.12;margin:4px 0 7px}
  .practice-tool-page .pt-hero .lede{font-size:.9rem;line-height:1.48}
  .practice-tool-page .pt-hero .kicker{font-size:.64rem;margin-top:7px}
  .pt-crumbs{font-size:.7rem;gap:6px}
  .pt-hero-tools{margin-top:9px}
  .practice-tool-page main.container{padding-top:14px;padding-bottom:28px}
  .practice-tool-page .tabbar{top:72px;padding:7px 0}
  .practice-tool-page .tabbar-in{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-left:14px;padding-right:14px}
  .practice-tool-page .tabbar-in::-webkit-scrollbar,.practice-tool-page .hud-row::-webkit-scrollbar{display:none}
  .practice-tool-page .tabbtn{flex:0 0 auto;min-height:44px;padding:7px 13px}
  .practice-tool-page .site-header :is(.burger,.nav-search){width:44px;height:44px;min-width:44px;min-height:44px}
  .practice-tool-page .progress-pill{display:none}
  .practice-tool-page .hud-row{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding-bottom:3px}
  .practice-tool-page .hud-row>*{flex:0 0 auto}
  .practice-tool-page .layout-board-side{gap:15px}
  .practice-tool-page .section-title{margin:19px 0 11px}
  .practice-tool-page .section-title p{font-size:.82rem}
  .practice-tool-page .card-pad{padding:14px}
  .practice-tool-page .cdb{width:min(100%,520px);min-width:min(100%,280px)}
  .practice-tool-page [data-practice-board],.practice-tool-page [data-practice-task]{scroll-margin-top:calc(var(--pt-sticky-clearance,132px) + 6px);scroll-margin-bottom:calc(var(--pt-dock-clearance,70px) + 8px)}
  .practice-tool-page #kbd-hint{display:none}
  .pt-mobile-dock{position:fixed;left:10px;right:10px;bottom:calc(8px + env(safe-area-inset-bottom));z-index:75;display:grid;grid-template-columns:92px minmax(0,1fr);gap:8px;padding:8px;background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:14px;box-shadow:0 14px 36px rgba(30,55,90,.24);backdrop-filter:blur(12px)}
  .pt-mobile-dock .btn{width:100%;min-height:46px;padding:8px 11px;font-size:.9rem}
  .pt-mobile-dock .pt-dock-modes{background:var(--mist);border-color:var(--line);color:var(--blue-deep)}
  .practice-tool-page.nav-open .mobile-menu{z-index:90}
  .practice-tool-page.nav-open .pt-mobile-dock{display:none}
  .practice-tool-page :is(.btn--sm,.tabbtn,.chip,.pj-scale-btn,.pj-confidence span,.pj-cand,.calc-cand,.calc-confidence label,.si-confidence-row button){min-height:44px}
  .pt-faq-section{padding-top:0}
  .pt-faq summary{min-height:48px;padding:11px 13px;font-size:.9rem}
  .pt-faq .answer{padding:12px 13px 14px;font-size:.88rem}
  .pt-related{padding-top:23px}
  .practice-tool-page footer{margin-top:34px}
}
@media(max-width:420px){
  .practice-tool-page .container{padding-left:8px;padding-right:8px}
  .practice-tool-page .layout-board-side>:first-child,.practice-tool-page [data-practice-board]{min-width:0;padding-left:0;padding-right:0}
  .practice-tool-page .cdb{width:min(100%,520px)}
  .practice-tool-page .site-branding .domain{font-size:.93rem}
  .practice-tool-page .pt-hero .lede{font-size:.86rem}
  .practice-tool-page .choice-row{gap:7px}
  .practice-tool-page .choice-row .btn{padding-left:10px;padding-right:10px}
  .practice-tool-page .stat{padding:8px;min-width:70px}
  .practice-tool-page .stat span{font-size:10px}
  .pt-related-grid{grid-template-columns:minmax(0,1fr)}
}
@media(max-width:340px){
  .practice-tool-page .site-branding .domain{font-size:.86rem}
  .practice-tool-page .site-branding img{height:34px}
  .practice-tool-page .pt-hero h1{font-size:1.48rem}
  .practice-tool-page .pt-hero .lede{font-size:.82rem}
  .practice-tool-page .cdb{min-width:0}
  .pt-mobile-dock{left:6px;right:6px;grid-template-columns:82px minmax(0,1fr)}
}
@media(max-height:520px) and (max-width:960px){
  .practice-tool-page .site-header{position:relative}
  .practice-tool-page .tabbar{top:0}
  .practice-tool-page .layout-board-side{grid-template-columns:minmax(0,42vw) minmax(0,1fr);align-items:start;gap:14px}
  .practice-tool-page [data-practice-board]{position:sticky;top:calc(var(--pt-sticky-clearance,54px) + 4px)}
  .practice-tool-page .cdb{width:min(42vw,calc(100svh - var(--pt-sticky-clearance,54px) - var(--pt-dock-clearance,82px) - 14px),520px);min-width:0}
}