/* SHB Tools: bold professional design system. System fonts only (fast, no external requests). */
:root{--bg:#f4f5fb;--paper:#f4f5fb;--card:#fff;--ink:#0f1537;--muted:#4b5679;--line:#e0e4f3;--violet:#4f46e5;--brand2:#7c3aed;--tint:#eef0ff;--navy:#0a0f2c;--navy2:#060a20;--band:#0a0f2c;--btn-ink:#fff;
--shadow:0 1px 2px rgba(15,21,55,.06),0 14px 34px -14px rgba(15,21,55,.25);--shadow-lg:0 2px 4px rgba(15,21,55,.08),0 30px 64px -22px rgba(40,30,120,.4);--r:20px;
--font:ui-sans-serif,"Inter","SF Pro Text","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--grad:linear-gradient(135deg,#6366f1,#8b5cf6 55%,#ec4899)}
:root[data-theme=dark]{--bg:#080c22;--paper:#080c22;--card:#111838;--ink:#e9ecff;--muted:#a2acd4;--line:#232c58;--violet:#a5a0ff;--brand2:#c4a6ff;--tint:#1a2250;--navy:#050818;--navy2:#03051a;--band:#0a0f2c;--btn-ink:#0b1220;--shadow:0 1px 2px rgba(0,0,0,.4),0 14px 34px -14px rgba(0,0,0,.6);--shadow-lg:0 30px 64px -22px rgba(0,0,0,.75)}
.cat-images{--c:#8b5cf6;--ct:#6d28d9;--cb:#f1e9ff}.cat-pdfs{--c:#f43f5e;--ct:#be123c;--cb:#ffe4e9}.cat-text{--c:#14b8a6;--ct:#0f766e;--cb:#d5f7f1}.cat-calculators{--c:#3b82f6;--ct:#1d4ed8;--cb:#dfeaff}.cat-shopping{--c:#f59e0b;--ct:#a14a05;--cb:#fff0cf}.cat-guide{--c:#ec4899;--ct:#a31d6a;--cb:#ffe3f1}
:root[data-theme=dark] .cat-images{--ct:#c9b6ff;--cb:#2a1f55}:root[data-theme=dark] .cat-pdfs{--ct:#ffb3c0;--cb:#4a1a2a}:root[data-theme=dark] .cat-text{--ct:#7de8d8;--cb:#0f3a38}:root[data-theme=dark] .cat-calculators{--ct:#a9c8ff;--cb:#172f66}:root[data-theme=dark] .cat-shopping{--ct:#ffd37a;--cb:#4a3208}:root[data-theme=dark] .cat-guide{--ct:#ffb5da;--cb:#4a1a38}
*{box-sizing:border-box}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.7 var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--violet);text-underline-offset:3px}img,svg{max-width:100%;height:auto}
h1,h2,h3{line-height:1.12;letter-spacing:-.025em;font-weight:800;margin:0 0 .5em}
h1{font-size:clamp(2.3rem,5.2vw,3.9rem);letter-spacing:-.035em}h2{font-size:clamp(1.6rem,3vw,2.3rem)}h3{font-size:1.15rem}p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
:focus-visible{outline:3px solid var(--violet);outline-offset:3px;border-radius:8px}
.site-header :focus-visible,.site-footer :focus-visible,.hero-wrap :focus-visible,.cta :focus-visible{outline-color:#fbbf24}
.skip{position:absolute;left:-999px}.skip:focus{left:12px;top:12px;background:#fff;color:#0a0f2c;padding:10px 14px;z-index:99;border-radius:10px;box-shadow:var(--shadow)}
/* header: deep navy with a colour line */
.site-header{position:sticky;top:0;z-index:30;background:rgba(10,15,44,.94);backdrop-filter:saturate(1.5) blur(14px);border-bottom:1px solid rgba(255,255,255,.08);transition:box-shadow .25s}
.site-header:after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:linear-gradient(90deg,#6366f1,#ec4899,#f59e0b,#14b8a6,#3b82f6);opacity:.9}
.site-header.scrolled{box-shadow:0 10px 30px -14px rgba(0,0,0,.6)}
.bar{display:flex;align-items:center;gap:14px;min-height:68px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:1.22rem;letter-spacing:-.02em;color:#fff;text-decoration:none;margin-right:auto}
.mark{width:32px;height:32px;border-radius:10px;background:var(--grad);box-shadow:0 8px 20px -6px #8b5cf6;transform:rotate(-8deg)}
#nav{display:flex;gap:4px}#nav a{color:#dfe3ff;text-decoration:none;font-weight:600;font-size:.95rem;padding:8px 14px;border-radius:10px}
#nav a:hover{background:rgba(255,255,255,.1);color:#fff}#nav a[aria-current=page]{background:rgba(255,255,255,.16);color:#fff}
.icon-btn{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.2);border-radius:12px;width:42px;height:42px;cursor:pointer;display:grid;place-items:center;transition:transform .2s,background .2s}
.icon-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-1px)}.icon-btn svg{width:20px;height:20px;display:block}.menu{display:none}
/* buttons */
.btn{display:inline-block;padding:14px 28px;border-radius:14px;font-weight:700;font-size:1rem;text-decoration:none;background:var(--grad);color:#fff;box-shadow:0 12px 26px -10px #7c3aed;transition:transform .2s,box-shadow .2s;border:0;font-family:inherit;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 32px -12px #7c3aed}.btn.alt{background:var(--card);color:var(--ink);border:1.5px solid var(--line);box-shadow:none}.btn.alt:hover{border-color:var(--violet)}
.btn.sm{padding:10px 18px;font-size:.95rem}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}
:root[data-theme=dark] .btn:not(.alt){color:var(--btn-ink);background:linear-gradient(135deg,#a8a4ff,#e0b3ff)}
/* hero */
.hero-wrap{position:relative;overflow:hidden;color:#fff;background:linear-gradient(160deg,#0a0f2c 0%,#1a1466 55%,#4a0f6b 100%)}
.hero-wrap:before{content:"";position:absolute;width:620px;height:620px;right:-140px;top:-200px;background:radial-gradient(circle,rgba(236,72,153,.55),transparent 65%);filter:blur(10px)}
.hero-wrap:after{content:"";position:absolute;width:560px;height:560px;left:-180px;bottom:-260px;background:radial-gradient(circle,rgba(20,184,166,.45),transparent 65%);filter:blur(10px)}
.hero{position:relative;z-index:1;padding:76px 22px 120px;display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--violet);margin:0 0 10px}
.pill{display:inline-flex;gap:6px;align-items:center;padding:8px 16px;border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.1);border-radius:99px;font-size:.88rem;font-weight:600;color:#e6e9ff;margin-bottom:22px}
.pill b{color:#fbbf24}
.hero h1{color:#fff}
.grad{background:linear-gradient(110deg,#fde047,#fb923c 35%,#f472b6 70%,#c4b5fd);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero .lead{color:#cdd3f7}.lead{font-size:1.2rem;color:var(--muted);max-width:34em}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero .btn{background:linear-gradient(135deg,#fde047,#fb923c 55%,#f472b6);color:#0b1220;box-shadow:0 14px 30px -10px #f472b6}
.hero .btn.alt{background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.35);box-shadow:none}.hero .btn.alt:hover{background:rgba(255,255,255,.2);border-color:#fff}
.trust{display:flex;flex-wrap:wrap;gap:10px 26px;list-style:none;padding:0;margin:30px 0 0;color:#cdd3f7;font-size:.95rem;font-weight:600}.trust li:before{content:"✓";color:#5eead4;font-weight:900;margin-right:8px}
.stage{perspective:1000px;height:380px;display:grid;place-items:center}
.stack{position:relative;width:250px;height:290px;transform-style:preserve-3d;transform:rotateX(55deg) rotateZ(-30deg);animation:spin 14s ease-in-out infinite alternate}
.sheet{position:absolute;inset:0;border-radius:22px;border:2px solid rgba(255,255,255,.35);box-shadow:0 40px 70px -20px rgba(0,0,0,.65);display:grid;place-items:center;font-weight:800;font-size:1.8rem;color:#fff}
.sheet:nth-child(1){transform:translateZ(0);background:linear-gradient(135deg,#0d9488,#38bdf8)}.sheet:nth-child(2){transform:translateZ(48px);background:linear-gradient(135deg,#f43f5e,#fb923c)}.sheet:nth-child(3){transform:translateZ(96px);background:linear-gradient(135deg,#6366f1,#c026d3)}
@keyframes spin{to{transform:rotateX(48deg) rotateZ(-14deg)}}
/* stats strip overlapping the hero */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:-62px 0 8px;position:relative;z-index:2}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;box-shadow:var(--shadow-lg);border-top:5px solid var(--c,#6366f1)}
.stat b{display:block;font-size:2rem;line-height:1.1;font-weight:800;color:var(--ct,var(--violet));letter-spacing:-.02em}.stat span{color:var(--muted);font-weight:600;font-size:.95rem}
/* sections & cards */
section{padding:56px 0}
.tools-head{display:flex;flex-wrap:wrap;gap:16px;align-items:end;justify-content:space-between}
.search input{font:inherit;padding:13px 18px;min-width:290px;border:2px solid var(--line);border-radius:14px;background:var(--card);color:var(--ink);box-shadow:var(--shadow)}.search input:focus{border-color:var(--violet)}
#filters{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 22px}
#filters button{font:inherit;font-size:.92rem;font-weight:700;padding:9px 18px;border-radius:99px;border:2px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;transition:transform .15s}
#filters button:hover{transform:translateY(-1px);border-color:var(--violet)}#filters button[aria-pressed=true]{background:var(--grad);color:#fff;border-color:transparent}
:root[data-theme=dark] #filters button[aria-pressed=true]{color:#0b1220;background:linear-gradient(135deg,#a8a4ff,#e0b3ff)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(256px,1fr));gap:22px;align-content:start}
.card{position:relative;display:block;background:var(--card);border:1px solid var(--line);border-top:5px solid var(--c,#6366f1);border-radius:var(--r);padding:14px 14px 22px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:transform .28s,box-shadow .28s,border-color .28s;transform-style:preserve-3d}
.card:hover{transform:perspective(800px) rotateX(2.5deg) translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--c,#6366f1)}
.card h3{margin:14px 6px 6px;font-size:1.08rem}.card p{margin:0 6px;color:var(--muted);font-size:.95rem;line-height:1.55}
.chip{display:inline-block;margin:14px 6px 0;padding:3px 11px;border-radius:99px;background:var(--cb,var(--tint));color:var(--ct,var(--violet));font-size:.76rem;font-weight:800;letter-spacing:.04em;text-transform:uppercase}
.thumb{width:100%;height:auto;border-radius:14px;display:block;background:var(--tint)}
.tile{display:grid;place-items:center;height:80px;border-radius:12px;font-weight:800;font-size:1.3rem;color:#fff;background:linear-gradient(135deg,hsl(var(--h) 65% 28%),hsl(calc(var(--h) + 50) 70% 34%))}
.cats{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}.cats button{font:inherit;font-weight:700;font-size:.92rem;padding:8px 16px;border-radius:99px;border:1.5px solid rgba(255,255,255,.3);background:rgba(255,255,255,.1);color:#fff;cursor:pointer}.cats button:hover{background:rgba(255,255,255,.22)}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;counter-reset:s}
.steps div{counter-increment:s;position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:26px 24px 24px;box-shadow:var(--shadow)}
.steps div:before{content:counter(s);display:grid;place-items:center;width:44px;height:44px;border-radius:14px;color:#fff;font-weight:800;font-size:1.2rem;margin-bottom:16px;background:linear-gradient(135deg,#6366f1,#8b5cf6)}
.steps div:nth-child(2):before{background:linear-gradient(135deg,#f43f5e,#fb923c)}.steps div:nth-child(3):before{background:linear-gradient(135deg,#0d9488,#38bdf8)}
.steps h3{margin-bottom:6px}.steps p{margin:0;color:var(--muted)}
.privacy{position:relative;overflow:hidden;color:#e8ebff;background:linear-gradient(135deg,#0a0f2c,#1a1466 70%,#4a0f6b);border-radius:26px;padding:38px 40px;box-shadow:var(--shadow-lg)}
.privacy:before{content:"";position:absolute;width:380px;height:380px;right:-100px;top:-160px;background:radial-gradient(circle,rgba(236,72,153,.5),transparent 65%)}
.privacy>*{position:relative}.privacy h2{color:#fff;margin-bottom:.4em}.privacy p{margin:0;color:#d4d9f7;max-width:48em}.privacy a{color:#fde68a}.privacy .eyebrow{color:#fbbf24}
details{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px 22px;margin-bottom:12px;box-shadow:var(--shadow)}
summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:12px}summary::-webkit-details-marker{display:none}
summary:after{content:"+";font-size:1.5rem;line-height:1;color:var(--violet);font-weight:600}details[open] summary:after{content:"−"}details p{margin:12px 0 0;color:var(--muted)}
.cta{margin:20px 0 0;padding:48px 40px;border-radius:28px;text-align:center;color:#fff;background:linear-gradient(120deg,#4f46e5,#c026d3 55%,#f43f5e);box-shadow:var(--shadow-lg)}
.cta h2{color:#fff;margin-bottom:.3em}.cta p{color:#fde9f4;margin:0 auto 22px;max-width:36em}.cta .btn{background:#fff;color:#4f1d8c;box-shadow:0 14px 30px -12px rgba(0,0,0,.5)}
/* footer */
.site-footer{position:relative;background:var(--navy2);color:#c9d2ee;margin-top:64px;padding:58px 0 28px}
.site-footer:before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:linear-gradient(90deg,#6366f1,#ec4899,#f59e0b,#14b8a6,#3b82f6)}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.site-footer h2{color:#fff;font-size:.85rem;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}.site-footer a{color:#c9d2ee;text-decoration:none;font-size:.95rem}.site-footer a:hover{color:#fff;text-decoration:underline}
.f-brand-name{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.2rem;margin-bottom:10px}.f-brand p{color:#aab5d6;font-size:.95rem;margin:0 0 10px}
.f-bottom{border-top:1px solid #1f2a4a;margin-top:38px;padding-top:20px;font-size:.85rem;color:#9aa7c8;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.small{font-size:.85rem;color:var(--muted)}.empty{color:var(--muted)}
/* full-width coloured header band on tool, article and info pages */
.crumbs,.tool-head,.article>.crumbs,.article>h1,.article>.meta{background:var(--band);box-shadow:0 0 0 100vmax var(--band);clip-path:inset(0 -100vmax);color:#fff}
.crumbs{font-size:.9rem;color:#b9c2f0;padding:26px 0 8px}.crumbs a{color:#e1e6ff}
.tool-head{display:grid;grid-template-columns:1.25fr .75fr;gap:34px;align-items:center;padding:14px 0 84px}
.tool-head h1{color:#fff;font-size:clamp(2rem,4.2vw,3.1rem)}.tool-head .lead{color:#cdd3f7}
.tool-head img{width:100%;border-radius:22px;background:#fff;border:3px solid rgba(255,255,255,.25);box-shadow:0 30px 60px -20px rgba(0,0,0,.6)}
.tool-ui{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--shadow-lg);position:relative;z-index:2;margin-top:-52px}
.tool-ui:before{content:"";position:absolute;left:28px;right:28px;top:-1px;height:4px;border-radius:4px;background:linear-gradient(90deg,#6366f1,#ec4899,#f59e0b,#14b8a6)}
.drop{border:2px dashed color-mix(in srgb,var(--violet) 50%,var(--line));border-radius:18px;padding:32px;text-align:center;background:color-mix(in srgb,var(--tint) 60%,transparent);transition:background .2s,border-color .2s}
.drop.over,.drop:focus-within{border-color:var(--violet);background:var(--tint)}
.drop input{font:inherit;margin-top:8px;max-width:100%}.drop input[type=file]{width:100%}
.drop input::file-selector-button{font:inherit;font-weight:700;padding:10px 18px;margin-right:12px;border:0;border-radius:10px;background:var(--grad);color:#fff;cursor:pointer}
:root[data-theme=dark] .drop input::file-selector-button{color:var(--btn-ink)}
.controls{display:flex;flex-wrap:wrap;gap:18px;margin:20px 0;align-items:end}.controls label{display:grid;gap:5px;font-weight:600;font-size:.9rem}
.controls input,.controls select{font:inherit;padding:10px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);max-width:180px}.controls select{max-width:100%;min-width:12em}input[type=range]{accent-color:var(--violet)}
.msg{padding:12px 16px;border-radius:12px;background:#fde8e8;color:#7a1414;margin-top:16px;font-weight:600}
.note{padding:14px 18px;border-radius:14px;background:var(--tint);border-left:5px solid var(--violet);margin:14px 0}
.results{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:20px}.results figure{margin:0}
.results img{width:100%;max-height:340px;object-fit:contain;background:repeating-conic-gradient(var(--line) 0 25%,transparent 0 50%) 0/16px 16px;border-radius:12px}.results figcaption{font-size:.9rem;color:var(--muted);margin-top:8px}
.ta{width:100%;font:inherit;padding:14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);color:var(--ink);resize:vertical}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:18px 0}.stats div{background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:12px 16px;border-top:4px solid #8b5cf6}
.stats div:nth-child(2){border-top-color:#14b8a6}.stats div:nth-child(3){border-top-color:#3b82f6}.stats div:nth-child(4){border-top-color:#f59e0b}.stats div:nth-child(5){border-top-color:#f43f5e}.stats div:nth-child(6){border-top-color:#ec4899}
.stats dt{font-size:.8rem;color:var(--muted)}.stats dd{margin:0;font-size:1.55rem;font-weight:800}
.row{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.calc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:18px}.calc-grid fieldset{border:1px solid var(--line);border-radius:18px;padding:16px 18px;background:var(--bg);border-top:4px solid #8b5cf6}
.calc-grid fieldset:nth-child(2){border-top-color:#f43f5e}.calc-grid fieldset:nth-child(3){border-top-color:#14b8a6}.calc-grid fieldset:nth-child(4){border-top-color:#f59e0b}
.calc-grid legend{font-weight:800;padding:0 8px}.calc-grid .out{margin-top:10px;min-height:3.2em;color:var(--muted);font-size:.95rem}.calc-grid .out strong{color:var(--ink);font-size:1.35rem}
#list{list-style:none;padding:0;margin:16px 0;display:grid;gap:10px}#list li{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:8px 12px;background:var(--bg)}
#list img,#list .ph{width:56px;height:56px;object-fit:cover;border-radius:9px;background:var(--line)}#list .nm{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#list small{color:var(--muted)}#list .n{font-weight:800;width:1.5em}
#list button{width:36px;height:36px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--ink);cursor:pointer}#list button:hover{border-color:var(--violet)}
.tool-ui table{border-collapse:collapse;width:100%;font-size:.95rem;margin-top:14px}.tool-ui td,.tool-ui th{border:1px solid var(--line);padding:9px 12px;text-align:left;overflow-wrap:anywhere}.tool-ui th{background:var(--tint)}
.tool-ui tbody tr:nth-child(even) td{background:color-mix(in srgb,var(--tint) 35%,transparent)}.tool-ui .controls{margin:14px 0}
fieldset.mode{border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin:0 0 6px}fieldset.mode legend{font-weight:800;padding:0 8px}fieldset.mode label{display:inline-flex;gap:8px;align-items:center;margin-right:22px;font-weight:600}
/* long-form content */
.guide{max-width:780px}.guide h2{margin-top:2.1em;padding-top:.2em;position:relative}.guide h2:before{content:"";display:block;width:46px;height:5px;border-radius:5px;background:var(--grad);margin-bottom:12px}
.guide ul,.guide ol{padding-left:1.3em}.guide li{margin-bottom:.4em}
.guide table{border-collapse:collapse;width:100%;font-size:.95rem;background:var(--card);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}.guide td,.guide th{border:1px solid var(--line);padding:10px 12px;text-align:left;overflow-wrap:anywhere}.guide th{background:linear-gradient(135deg,#eef0ff,#f6e9ff);color:#1d1650}
:root[data-theme=dark] .guide th{background:var(--tint);color:var(--ink)}
.guide pre{overflow-x:auto;max-width:100%;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px;font-size:.85rem}
.rel{display:flex;flex-wrap:wrap;gap:10px}.rel a{padding:10px 18px;border:1.5px solid var(--line);border-radius:99px;background:var(--card);text-decoration:none;font-weight:600;font-size:.95rem}.rel a:hover{border-color:var(--violet);background:var(--tint)}
.article{max-width:780px;margin:0 auto}
.article>.crumbs{padding:28px 0 6px}.article>h1{font-size:clamp(1.9rem,3.8vw,2.7rem);letter-spacing:-.03em;margin:0;padding:6px 0 14px;color:#fff}.article>.meta{margin:0;padding:0 0 74px;color:#c3cbf3;font-size:.95rem;font-weight:600}
.article>h1:last-of-type{padding-bottom:70px}.feature{width:100%;height:auto;border-radius:22px;margin:-56px 0 24px;box-shadow:var(--shadow-lg);position:relative;z-index:2;border:4px solid var(--card)}
.toc{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--violet);border-radius:16px;padding:18px 22px;margin:0 0 28px;box-shadow:var(--shadow)}.toc-title{font-weight:800;margin:0 0 8px}
.toc ol{margin:0;padding-left:1.3em;columns:2;column-gap:28px}.toc li{margin-bottom:4px;break-inside:avoid}.toc a{text-decoration:none}.toc a:hover{text-decoration:underline}
/* advertising: hidden unless enabled in layout.js. Always labelled, away from controls. */
.ad-slot[hidden]{display:none}.ad-slot{margin:40px auto;max-width:780px;text-align:center;min-height:120px;padding:10px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ad-label{display:block;font-size:.7rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
[hidden]{display:none!important}
html:not(.js-ready) body:before{content:"";display:block;height:69px;background:#0a0f2c}
main{min-height:62vh}#filters{min-height:44px}#tool-grid{min-height:640px}#article-grid{min-height:640px}
@media(max-width:1000px){.stats-strip{grid-template-columns:repeat(2,1fr)}.f-grid{grid-template-columns:1fr 1fr}}
@media(max-width:800px){.hero{grid-template-columns:1fr;padding:40px 22px 110px}.stage{height:280px}.menu{display:grid}.tool-head,.results{grid-template-columns:1fr}.toc ol{columns:1}
#nav{display:none;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:#0a0f2c;padding:14px 22px;border-bottom:1px solid rgba(255,255,255,.1);gap:4px;box-shadow:var(--shadow)}#nav.open{display:flex}
.cta,.privacy{padding:30px 24px}}
@media(max-width:600px){.f-grid,.stats-strip{grid-template-columns:1fr}.guide table{display:block;overflow-x:auto;max-width:100%}.tool-ui{padding:18px}.tool-ui table{display:block;overflow-x:auto}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}.card:hover{transform:none}}
.split{display:grid;grid-template-columns:1fr 1fr;gap:22px}.split h3{margin:0 0 12px}
.biz{list-style:none;margin:0;padding:0;display:grid;gap:10px;min-height:400px;align-content:start}
.biz a{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 18px;text-decoration:none;color:var(--ink);box-shadow:var(--shadow);transition:border-color .2s,transform .2s}
.biz a:hover{border-color:var(--violet);transform:translateY(-2px)}.biz strong{display:block}.biz span{color:var(--muted);font-size:.93rem}
@media(max-width:800px){.split{grid-template-columns:1fr}.biz{min-height:0}}
html{scroll-padding-top:84px}section[id],h2[id]{scroll-margin-top:84px}