/* ============ Quirkulator design system — "night lab" ============
   Palette: ink #0b0d14 · surface rgba glass · violet #8b7cff ·
   cyan #37d5f2 · amber #ffb454 · text #e8e9f0 / #9aa0b4          */
:root{
  color-scheme: dark;
  --ink:#0b0d14; --ink2:#10131d;
  --text:#e8e9f0; --muted:#9aa0b4; --faint:#5b6175;
  --violet:#8b7cff; --cyan:#37d5f2; --amber:#ffb454; --rose:#ff7597;
  --grad:linear-gradient(120deg,var(--violet),var(--cyan));
  --glass:rgba(255,255,255,.045);
  --glass-brd:rgba(255,255,255,.09);
  --radius:20px;
  --disp:'Space Grotesk',system-ui,sans-serif;
  --body:'Inter',system-ui,sans-serif;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --ease:cubic-bezier(.22,1,.36,1);
}
*{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth}
body{background:var(--ink);color:var(--text);font-family:var(--body);
  font-size:clamp(15px,1.05vw,17px);line-height:1.65;-webkit-font-smoothing:antialiased;
  overflow-x:hidden}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--disp);line-height:1.12;letter-spacing:-.02em;text-wrap:balance}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);margin-bottom:.4em}
h3{font-size:1.08rem}
kbd{font:600 .72rem var(--body);border:1px solid var(--glass-brd);border-radius:6px;padding:1px 7px;color:var(--muted);background:rgba(255,255,255,.04)}
code{font-family:ui-monospace,monospace;color:var(--cyan);font-size:.92em}
.wrap{max-width:1160px;margin:0 auto;padding:0 clamp(18px,4vw,32px)}
.section{padding:clamp(34px,6vw,72px) 0}
::selection{background:rgba(139,124,255,.35)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}


/* ---------- light theme ---------- */
html[data-theme=light]{color-scheme:light}
html[data-theme=light] body{background:#f5f6fb;color:#171a26}
html[data-theme=light] .bg-scene{background:radial-gradient(1200px 800px at 80% -10%,#e8ebfa 0%,#f5f6fb 55%)}
html[data-theme=light] .aurora{opacity:.32}
html[data-theme=light] .grain{opacity:.25}
html[data-theme=light]{
  --ink:#f5f6fb; --ink2:#eceef7;
  --text:#171a26; --muted:#4c5268; --faint:#8b91a8;
  --glass:rgba(255,255,255,.62);
  --glass-brd:rgba(23,26,38,.09);
  --shadow:0 20px 60px rgba(35,40,80,.12);
}
html[data-theme=light] .btn-primary{color:#fff}
html[data-theme=light] .nav.glass{background:rgba(255,255,255,.72)}
html[data-theme=light] .card{background:rgba(255,255,255,.66)}
html[data-theme=light] .card:hover{box-shadow:0 16px 44px rgba(35,40,80,.14)}
html[data-theme=light] .formula{color:#171a26}
html[data-theme=light] code{color:#6553e8}
html[data-theme=light] .gauge-track{stroke:rgba(23,26,38,.08)}
html[data-theme=light] .field input[type=number],html[data-theme=light] .field select{background:rgba(255,255,255,.8);color:#171a26}
html[data-theme=light] .calc-result{background:linear-gradient(160deg,rgba(139,124,255,.10),rgba(55,213,242,.07))}
html[data-theme=light] .extras .xrow{background:rgba(255,255,255,.7)}
html[data-theme=light] .vars>div,html[data-theme=light] .band-row{background:rgba(255,255,255,.6);border-color:rgba(23,26,38,.07)}
html[data-theme=light] .footer{background:rgba(255,255,255,.5)}
html[data-theme=light] .search-modal{background:rgba(240,242,250,.6)}
html[data-theme=light] ::selection{background:rgba(139,124,255,.25)}
html[data-theme=light] .hero-demo-bar{background:rgba(23,26,38,.08)}
html[data-theme=light] .search-results a.sel,html[data-theme=light] .search-results a:hover{background:rgba(139,124,255,.14)}

/* ---------- animated background scene ---------- */
.bg-scene{position:fixed;inset:0;z-index:-1;overflow:hidden;background:
  radial-gradient(1200px 800px at 80% -10%,#141a2e 0%,var(--ink) 55%)}
.aurora{position:absolute;border-radius:50%;filter:blur(90px);opacity:.5;will-change:transform}
.aurora-a{width:52vw;height:52vw;background:radial-gradient(circle,rgba(139,124,255,.5),transparent 65%);top:-18vw;left:-10vw;animation:drift 26s var(--ease) infinite alternate}
.aurora-b{width:44vw;height:44vw;background:radial-gradient(circle,rgba(55,213,242,.38),transparent 65%);top:8vw;right:-14vw;animation:drift 32s var(--ease) infinite alternate-reverse}
.aurora-c{width:36vw;height:36vw;background:radial-gradient(circle,rgba(255,117,151,.22),transparent 65%);bottom:-16vw;left:28vw;animation:drift 38s var(--ease) infinite alternate}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(6vw,4vw,0) scale(1.15)}}
.grain{position:absolute;inset:0;opacity:.5;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04 0'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- scroll progress ---------- */
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:60}
.scroll-progress span{display:block;height:100%;width:0;background:var(--grad);transition:width .1s linear}

/* ---------- glass primitives ---------- */
.glass{background:var(--glass);border:1px solid var(--glass-brd);border-radius:var(--radius);
  backdrop-filter:blur(18px) saturate(1.3);-webkit-backdrop-filter:blur(18px) saturate(1.3)}
.glass-btn{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:12px;
  background:var(--glass);border:1px solid var(--glass-brd);color:var(--muted);cursor:pointer;
  font:500 .85rem var(--body);transition:color .25s,border-color .25s,transform .25s var(--ease)}
.glass-btn:hover{color:var(--text);border-color:rgba(255,255,255,.22);transform:translateY(-1px)}
.btn{display:inline-flex;align-items:center;gap:8px;font:600 .95rem var(--disp);padding:13px 26px;
  border-radius:14px;border:1px solid transparent;cursor:pointer;position:relative;overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.btn-primary{background:var(--grad);color:#0b0d14}
.btn-primary::after{content:'';position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.5) 50%,transparent 70%);transform:translateX(-120%);transition:transform .7s var(--ease)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(139,124,255,.35)}
.btn-primary:hover::after{transform:translateX(120%)}
.btn-ghost{border-color:var(--glass-brd);color:var(--muted)}
.btn-ghost:hover{color:var(--text);border-color:rgba(255,255,255,.25);transform:translateY(-2px)}

/* ---------- nav ---------- */
.nav{position:sticky;top:12px;z-index:50;margin:12px clamp(10px,2vw,24px) 0;border-radius:18px}
.nav-inner{display:flex;align-items:center;gap:26px;padding:10px clamp(14px,2vw,22px)}
.brand{display:flex;align-items:center;gap:10px;font:700 1.05rem var(--disp);letter-spacing:-.01em}
.brand-mark{flex:none}
.nav-links{display:flex;gap:4px;margin-left:auto}
.nav-links a{padding:8px 13px;border-radius:10px;color:var(--muted);font:500 .88rem var(--body);position:relative;transition:color .25s}
.nav-links a::after{content:'';position:absolute;left:13px;right:13px;bottom:4px;height:2px;border-radius:2px;background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav-links a:hover{color:var(--text)}.nav-links a:hover::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center}
@media(max-width:640px){.nav-links{display:none}.nav-inner{gap:12px}.nav-actions{margin-left:auto}}

/* ---------- search modal ---------- */
.search-modal{position:fixed;inset:0;z-index:70;background:rgba(5,6,10,.6);backdrop-filter:blur(6px);
  display:grid;place-items:start center;padding:12vh 18px 0}
.search-modal[hidden]{display:none}
.search-panel{width:min(620px,100%);padding:10px;box-shadow:var(--shadow);animation:pop .35s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.97)}}
.search-panel input{width:100%;background:transparent;border:0;color:var(--text);font:500 1.1rem var(--body);padding:14px 16px;outline:none}
.search-results{max-height:46vh;overflow:auto}
.search-results a{display:flex;gap:12px;align-items:center;padding:11px 14px;border-radius:12px;color:var(--muted)}
.search-results a .s-name{color:var(--text);font-weight:600;font-size:.95rem}
.search-results a .s-tag{font-size:.8rem}
.search-results a.sel,.search-results a:hover{background:rgba(139,124,255,.12)}
.search-hint{padding:10px 14px;color:var(--faint);font-size:.75rem;border-top:1px solid var(--glass-brd)}
.search-form{display:flex;gap:10px;padding:10px;max-width:560px}
.search-form input{flex:1;background:transparent;border:0;color:var(--text);font:500 1rem var(--body);padding:0 12px;outline:none}

/* ---------- hero ---------- */
.hero{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(28px,5vw,60px);align-items:center;
  padding-top:clamp(48px,9vh,110px);padding-bottom:clamp(40px,7vw,80px);min-height:74vh}
.eyebrow{font:600 .78rem var(--body);letter-spacing:.14em;text-transform:uppercase;color:var(--cyan);margin-bottom:18px}
.hero-h1{font-size:clamp(2.2rem,5.2vw,4rem);font-weight:700;margin-bottom:22px}
.hero-h1 .line{display:block;opacity:0;transform:translateY(26px);animation:lineup .8s var(--ease) forwards}
.hero-h1 .line:nth-child(2){animation-delay:.12s}.hero-h1 .line:nth-child(3){animation-delay:.24s}
@keyframes lineup{to{opacity:1;transform:none}}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{color:var(--muted);max-width:52ch;font-size:1.06rem;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{padding:22px;box-shadow:var(--shadow);transform:perspective(900px) rotateY(-6deg) rotateX(2deg);transition:transform .5s var(--ease)}
.hero-card:hover{transform:perspective(900px) rotateY(0) rotateX(0)}
.hero-demo-head{display:flex;gap:6px;margin-bottom:20px}
.hero-demo-head .dot{width:9px;height:9px;border-radius:50%;background:var(--faint);opacity:.5}
.hero-demo-label{font:600 .78rem var(--body);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.hero-demo-score{font:700 clamp(3rem,6vw,4.4rem)/1 var(--disp);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin:8px 0 16px}
.hero-demo-unit{font-size:.45em;-webkit-text-fill-color:var(--muted)}
.hero-demo-bar{height:8px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden}
.hero-demo-bar span{display:block;height:100%;width:0;border-radius:6px;background:var(--grad);transition:width 1.2s var(--ease)}
.hero-demo-note{margin-top:14px;color:var(--faint);font-size:.82rem;min-height:1.4em}
@media(max-width:880px){.hero{grid-template-columns:1fr;min-height:0}.hero-card{max-width:420px}}

/* ---------- cards & grids ---------- */
.grid{display:grid;gap:16px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:880px){.grid-3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.grid-3,.grid-2{grid-template-columns:1fr}}
.card{display:flex;gap:14px;align-items:flex-start;padding:20px;border-radius:var(--radius);
  background:var(--glass);border:1px solid var(--glass-brd);position:relative;overflow:hidden;
  transition:transform .35s var(--ease),border-color .35s,box-shadow .35s var(--ease)}
.card::before{content:'';position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(130deg,rgba(139,124,255,.6),rgba(55,213,242,.4) 45%,transparent 70%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .35s}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 44px rgba(0,0,0,.4)}
.card:hover::before{opacity:1}
.card-icon{font-size:1.5rem;line-height:1.2}
.card-body{display:flex;flex-direction:column;gap:5px;min-width:0}
.card-title{font:600 1rem var(--disp);letter-spacing:-.01em}
.card-tag{color:var(--muted);font-size:.84rem;line-height:1.5}
.card-arrow{margin-left:auto;color:var(--faint);transition:transform .3s var(--ease),color .3s;align-self:center}
.card:hover .card-arrow{transform:translateX(4px);color:var(--cyan)}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px}
.see-all{color:var(--muted);font-size:.88rem;transition:color .25s}.see-all:hover{color:var(--cyan)}

/* ---------- how band ---------- */
.how-band{padding:clamp(26px,4vw,46px)}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:16px}
.how-grid h3{margin-bottom:8px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.how-grid p{color:var(--muted);font-size:.92rem}
@media(max-width:800px){.how-grid{grid-template-columns:1fr}}

/* ---------- page hero / breadcrumbs / prose ---------- */
.page-hero{padding-bottom:8px}
.page-hero h1{font-size:clamp(1.9rem,4vw,3rem);margin:.2em 0}
.page-sub{color:var(--muted);max-width:64ch;font-size:1.03rem}
.crumbs{display:flex;gap:8px;font-size:.82rem;color:var(--faint);flex-wrap:wrap}
.crumbs a{color:var(--muted)}.crumbs a:hover{color:var(--cyan)}.crumbs b{color:var(--text);font-weight:500}
.prose{max-width:760px}
.prose h2{margin-top:1.6em}
.prose p{color:var(--muted);margin:.8em 0}

/* ---------- calculator layout ---------- */
.calc-layout{display:grid;grid-template-columns:1fr;gap:34px;padding-bottom:60px}
.calc-shell{display:grid;grid-template-columns:1.05fr .95fr;gap:0;overflow:hidden;box-shadow:var(--shadow)}
@media(max-width:880px){.calc-shell{grid-template-columns:1fr}}
.calc-inputs{padding:clamp(20px,3vw,32px);display:flex;flex-direction:column;gap:18px}
.field label{display:flex;justify-content:space-between;align-items:baseline;font:500 .88rem var(--body);color:var(--text);margin-bottom:7px;gap:10px}
.field .val{font:600 .85rem var(--disp);color:var(--cyan);white-space:nowrap}
.field .hint{display:block;color:var(--faint);font-size:.75rem;margin-top:5px}
.field input[type=number],.field select{width:100%;background:rgba(255,255,255,.05);border:1px solid var(--glass-brd);
  border-radius:12px;color:var(--text);font:500 .95rem var(--body);padding:11px 14px;outline:none;
  transition:border-color .25s,box-shadow .25s;appearance:none}
.field select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%239aa0b4' fill='none' stroke-width='1.6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.field input:focus,.field select:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(139,124,255,.18)}
.field input[type=range]{width:100%;accent-color:var(--violet);height:26px}
.calc-result{padding:clamp(20px,3vw,32px);background:linear-gradient(160deg,rgba(139,124,255,.08),rgba(55,213,242,.05));
  border-left:1px solid var(--glass-brd);display:flex;flex-direction:column;align-items:center;text-align:center}
@media(max-width:880px){.calc-result{border-left:0;border-top:1px solid var(--glass-brd)}}
.gauge-wrap{position:relative;width:min(240px,70%)}
.gauge{width:100%;display:block}
.gauge-track{fill:none;stroke:rgba(255,255,255,.08);stroke-width:13;stroke-linecap:round}
.gauge-fill{fill:none;stroke:url(#gaugeGrad);stroke-width:13;stroke-linecap:round;
  stroke-dasharray:251.3;stroke-dashoffset:251.3;transition:stroke-dashoffset .9s var(--ease)}
.gauge-num{position:absolute;left:0;right:0;bottom:6%;font:700 clamp(1.9rem,4vw,2.6rem)/1 var(--disp);letter-spacing:-.02em}
.gauge-unit{font-size:.44em;color:var(--muted);margin-left:2px}
.score-label{font:600 .78rem var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:6px}
.band-pill{margin-top:14px;padding:6px 16px;border-radius:999px;font:600 .85rem var(--disp);
  background:rgba(139,124,255,.14);border:1px solid rgba(139,124,255,.3);transition:background .4s,border-color .4s,color .4s}
.band-desc{color:var(--muted);font-size:.88rem;margin-top:12px;max-width:38ch;min-height:3.6em}
.extras{width:100%;margin-top:18px;display:flex;flex-direction:column;gap:8px}
.extras .xrow{display:flex;justify-content:space-between;gap:14px;font-size:.84rem;padding:9px 13px;
  border-radius:11px;background:rgba(255,255,255,.045);border:1px solid var(--glass-brd);text-align:left}
.extras .xrow b{color:var(--text);font-weight:600;text-align:right}
.extras .xrow span{color:var(--muted)}
.result-actions{display:flex;gap:10px;margin-top:18px}

/* ---------- article ---------- */
.calc-article{max-width:820px}
.calc-article>p{color:var(--muted);margin-bottom:1em}
.calc-article h2{margin-top:1.8em;margin-bottom:.6em}
.formula{padding:22px 26px;font:500 1.05rem/1.8 ui-monospace,monospace;color:var(--text);overflow-x:auto}
.formula sub{color:var(--cyan)}
.vars{display:flex;flex-direction:column;gap:8px;margin-top:14px}
.vars>div{display:grid;grid-template-columns:minmax(110px,auto) 1fr;gap:14px;padding:10px 14px;
  border-radius:12px;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);font-size:.88rem}
.vars dd{color:var(--muted)}
.steps{counter-reset:st;list-style:none;display:flex;flex-direction:column;gap:12px;padding:0}
.steps li{counter-increment:st;display:flex;gap:16px;color:var(--muted);font-size:.95rem;align-items:baseline}
.steps li::before{content:counter(st,decimal-leading-zero);font:700 .85rem var(--disp);color:var(--cyan);
  border:1px solid rgba(55,213,242,.3);border-radius:9px;padding:3px 8px;flex:none}
.example{padding:20px 24px;margin-bottom:12px}
.example h3{margin-bottom:6px;color:var(--text)}
.example p{color:var(--muted);font-size:.92rem}
.bands{display:flex;flex-direction:column;gap:10px}
.band-row{display:grid;grid-template-columns:90px 170px 1fr;gap:14px;padding:13px 16px;border-radius:13px;
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);font-size:.88rem;align-items:baseline}
.band-range{font:700 .82rem var(--disp);color:var(--cyan)}
.band-name{font-weight:600}
.band-text{color:var(--muted)}
@media(max-width:640px){.band-row{grid-template-columns:1fr}.band-row .band-range{color:var(--violet)}}
.faqs{display:flex;flex-direction:column;gap:10px}
.faq{padding:0}
.faq summary{cursor:pointer;padding:16px 20px;font:600 .95rem var(--disp);list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'+';font:400 1.3rem var(--disp);color:var(--cyan);transition:transform .3s var(--ease)}
.faq[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 20px 18px;color:var(--muted);font-size:.9rem}

/* ---------- footer ---------- */
.footer{border-top:1px solid var(--glass-brd);margin-top:40px;padding:46px 0 30px;background:rgba(5,6,10,.4)}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:34px}
@media(max-width:720px){.footer-grid{grid-template-columns:1fr}}
.foot-brand{font:700 1.1rem var(--disp)}
.foot-tag{color:var(--faint);font-size:.85rem;margin-top:10px;max-width:38ch}
.footer h3{font:600 .78rem var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.footer nav{display:flex;flex-direction:column;gap:8px}
.footer nav a{color:var(--muted);font-size:.88rem;transition:color .25s}
.footer nav a:hover{color:var(--cyan)}
.foot-note{margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.05)}
.foot-note p{color:var(--faint);font-size:.78rem}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .hero-h1 .line{opacity:1;transform:none}
}

/* ---------- theme toggle ---------- */
.theme-toggle{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;padding:0}
.theme-toggle svg{transition:transform .5s var(--ease)}
.theme-toggle:hover svg{transform:rotate(40deg)}
.theme-toggle .ic-sun{display:none}
html[data-theme=light] .theme-toggle .ic-sun{display:block}
html[data-theme=light] .theme-toggle .ic-moon{display:none}
html.theme-snap *{transition:none!important}

/* ---------- hub band on calculator pages ---------- */
.hub-band{margin-top:8px;padding:26px clamp(20px,3vw,34px)}
.hub-band h2{font-size:1.25rem}
.hub-band .hub-sub{color:var(--muted);font-size:.9rem;margin-bottom:16px}
.hub-links{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:8px}
.hub-links a{display:flex;align-items:center;gap:8px;padding:9px 13px;border-radius:11px;font-size:.86rem;color:var(--muted);background:rgba(255,255,255,.04);border:1px solid var(--glass-brd);transition:color .25s,border-color .25s,transform .25s var(--ease)}
html[data-theme=light] .hub-links a{background:rgba(255,255,255,.6)}
.hub-links a:hover{color:var(--text);border-color:rgba(139,124,255,.45);transform:translateY(-1px)}
.hub-links a.current{color:var(--text);border-color:rgba(139,124,255,.6);background:rgba(139,124,255,.12)}
.hub-links a .hl-ic{opacity:.8}

/* ---------- contact form ---------- */
.contact-form{display:flex;flex-direction:column;gap:16px;max-width:560px;padding:clamp(20px,3vw,32px)}
.contact-form label{font:500 .88rem var(--body)}
.contact-form input,.contact-form textarea{width:100%;background:rgba(255,255,255,.05);border:1px solid var(--glass-brd);border-radius:12px;color:var(--text);font:500 .95rem var(--body);padding:12px 14px;outline:none;transition:border-color .25s,box-shadow .25s;margin-top:6px}
html[data-theme=light] .contact-form input,html[data-theme=light] .contact-form textarea{background:rgba(255,255,255,.85)}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--violet);box-shadow:0 0 0 3px rgba(139,124,255,.18)}
.contact-form textarea{min-height:140px;resize:vertical}
.form-note{color:var(--faint);font-size:.8rem}
.form-ok{padding:14px 18px;border-radius:12px;background:rgba(55,213,242,.12);border:1px solid rgba(55,213,242,.3);font-size:.9rem}
.form-err{padding:14px 18px;border-radius:12px;background:rgba(255,117,151,.12);border:1px solid rgba(255,117,151,.35);font-size:.9rem}

/* ---------- stats strip ---------- */
.stats-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:26px 0 4px}
@media(max-width:640px){.stats-strip{grid-template-columns:1fr}}
.stat{padding:18px 22px;border-radius:16px;background:var(--glass);border:1px solid var(--glass-brd);text-align:center}
.stat b{display:block;font:700 1.7rem var(--disp);background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{color:var(--muted);font-size:.82rem}

/* ---------- pagination-ish letter nav for big category pages ---------- */
.subnav{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 4px}
.subnav a{padding:6px 14px;border-radius:999px;font-size:.82rem;color:var(--muted);border:1px solid var(--glass-brd);transition:color .25s,border-color .25s}
.subnav a:hover{color:var(--text);border-color:rgba(139,124,255,.5)}

/* ---------- spacing fine-tune (user request) ---------- */
.wrap.section.page-hero{padding-left:calc(clamp(18px,4vw,32px) + 5px);padding-right:calc(clamp(18px,4vw,32px) + 5px)}
.wrap.section.prose,.prose.wrap{padding-left:calc(clamp(18px,4vw,32px) + 5px);padding-right:calc(clamp(18px,4vw,32px) + 5px)}
.grid.grid-3{padding-left:5px;padding-right:5px}
.nav-actions{gap:10px}


/* ---------- reference data tables ---------- */
.ref-table-wrap{overflow-x:auto;margin:14px 0 22px;border:1px solid var(--glass-brd);border-radius:var(--radius);background:var(--glass)}
.ref-table{width:100%;border-collapse:collapse;font-size:.86rem}
.ref-table caption{text-align:left;font:600 .95rem var(--disp);padding:14px 16px 8px;color:var(--text)}
.ref-table th,.ref-table td{padding:9px 14px;text-align:left;border-top:1px solid var(--glass-brd);color:var(--muted);vertical-align:top}
.ref-table thead th{font:600 .7rem var(--body);letter-spacing:.08em;text-transform:uppercase;color:var(--faint);border-top:0}
.ref-table tbody th{color:var(--text);font-weight:600}
.ref-table tbody tr:hover{background:rgba(139,124,255,.06)}
.ref-note{padding:10px 16px 14px;color:var(--faint);font-size:.76rem;margin:0}