/* Themes: light is the default. Dark is applied with <html data-theme="dark"> */
:root{
  --bg:#f5f9fd;--panel:#ffffff;--panel-2:#edf4fa;--alt:#e8f1f9;--line:#d3e0ec;
  --text:#0b1b2e;--muted:#44586f;
  --blue:#0369a1;--blue-dark:#075985;--on-blue:#ffffff;
  --green:#047857;--ok:#047857;--gold:#fbbf24;--gold-text:#b45309;--err:#b91c1c;--wa:#1fa855;
  --header-bg:rgba(255,255,255,.92);--final-bg:linear-gradient(135deg,#dbeefb,#f5f9fd 70%);
  --glow:rgba(3,105,161,.14);--shadow:0 16px 40px rgba(15,40,70,.12);
  --font-sans:'IBM Plex Sans',system-ui,sans-serif;--font-serif:'Source Serif 4',Georgia,serif;--font-mono:'JetBrains Mono',monospace;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0c1c31;--panel:#12294a;--panel-2:#173358;--alt:#0f2440;--line:#2a4a70;
  --text:#f7fbff;--muted:#b6c6d9;
  --blue:#38bdf8;--blue-dark:#0ea5e9;--on-blue:#04121f;
  --green:#34d399;--ok:#34d399;--gold:#fbbf24;--gold-text:#fbbf24;--err:#fca5a5;
  --header-bg:rgba(12,28,49,.94);--final-bg:linear-gradient(135deg,#0d4a70,#12294a 70%);
  --glow:rgba(56,189,248,.18);--shadow:0 20px 60px rgba(0,0,0,.35);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--text);font:400 17px/1.65 var(--font-sans);-webkit-font-smoothing:antialiased;transition:background .25s,color .25s}
h1,h2,h3,h4{margin:0;line-height:1.15;letter-spacing:-.02em;font-weight:700}
h1,h2{font-family:var(--font-serif);font-weight:700}
h1{font-size:clamp(2.1rem,5vw,3.5rem)}
h2{font-size:clamp(1.6rem,3.4vw,2.35rem)}
h3{font-size:1.1rem}
p{margin:0}a{color:inherit}
img{max-width:100%;height:auto}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.wrap{max-width:1160px;margin:0 auto;padding:0 20px}
section{padding:84px 0}
.alt{background:var(--alt);border-block:1px solid var(--line)}
.lead{color:var(--muted);max-width:64ch;margin-top:14px}
.head{max-width:720px;margin-bottom:38px}
.eyebrow{display:inline-block;font:500 .78rem var(--font-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--blue);margin-bottom:12px}
.skip{position:absolute;left:-999px;top:8px;background:var(--gold);color:#1a1300;padding:10px 14px;border-radius:8px;z-index:100}
.skip:focus{left:12px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;border-radius:10px;padding:13px 22px;min-height:48px;font:600 1rem var(--font-sans);cursor:pointer;text-decoration:none;transition:transform .15s,background .15s,filter .15s}
.btn:active{transform:scale(.98)}
.b-blue{background:var(--blue);color:var(--on-blue)}.b-blue:hover{background:var(--blue-dark)}
.b-wa{background:var(--wa);color:#fff}.b-wa:hover{filter:brightness(1.1)}
.b-o{border:1.5px solid var(--blue);color:var(--blue);background:transparent}.b-o:hover{background:var(--panel-2)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:26px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:20px}
.card p{color:var(--muted);margin-top:8px;font-size:.97rem}
.ico{width:44px;height:44px;border-radius:11px;background:color-mix(in srgb,var(--blue) 13%,transparent);color:var(--blue);display:grid;place-items:center;font:600 .85rem var(--font-mono);margin-bottom:14px}

/* header */
header{position:sticky;top:0;z-index:30;background:var(--header-bg);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;gap:12px;height:70px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.12rem;text-decoration:none;letter-spacing:-.01em;white-space:nowrap}
.logo{display:block;height:54px;width:auto;border-radius:8px}
.nav nav{display:flex;align-items:center;gap:16px;margin-left:auto}
.nav nav a{text-decoration:none;color:var(--muted);font-weight:500;font-size:.93rem;white-space:nowrap}
.nav nav a:hover{color:var(--text)}
.nav nav a.btn,.nav nav a.btn:hover{color:var(--on-blue);padding:10px 18px;min-height:0}
.ib{display:grid;place-items:center;width:44px;height:44px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--text);font-size:1.2rem;cursor:pointer;flex:none}
.ib:hover{border-color:var(--blue)}
.menu{display:none}
@media(max-width:1199px){
  .menu{display:grid}
  .nav #theme{margin-left:auto}
  .nav nav{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:6px 20px 18px;margin:0}
  .nav nav.open{display:flex}
  .nav nav a{padding:13px 0;border-bottom:1px solid var(--line)}
  .nav nav a.btn{margin-top:14px;text-align:center;border:0}
}

.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:18px}
.crumbs a{text-decoration:none;color:var(--blue)}.crumbs a:hover{text-decoration:underline}

/* hero */
.hero{position:relative;padding:56px 0 84px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:52px 52px;opacity:.5;-webkit-mask-image:linear-gradient(#000 15%,transparent 85%);mask-image:linear-gradient(#000 15%,transparent 85%);pointer-events:none}
.hero::after{content:"";position:absolute;width:560px;height:560px;right:-160px;top:-200px;background:radial-gradient(circle,var(--glow),transparent 65%);pointer-events:none}
.hg{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:start}
@media(max-width:940px){.hg{grid-template-columns:1fr;gap:40px}}
.tag{display:inline-block;background:var(--gold);color:#2b2000;font-weight:600;font-size:.86rem;padding:6px 13px;border-radius:999px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero .lead{font-size:1.08rem}
.cta{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0}
.ticks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px 20px;color:var(--muted);font-size:.96rem}
.ticks li::before{content:"✓";color:var(--ok);font-weight:700;margin-right:8px}
.vis{margin-top:30px;max-width:540px;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--shadow)}
.vis .bar{display:flex;align-items:center;gap:7px;padding:10px 14px;background:var(--panel-2);border-bottom:1px solid var(--line);font:500 .78rem var(--font-mono);color:var(--muted)}
.vis .bar i{width:10px;height:10px;border-radius:50%;background:var(--line)}
.vis .bar i:nth-child(1){background:#f87171}.vis .bar i:nth-child(2){background:var(--gold)}.vis .bar i:nth-child(3){background:#34d399}
.vis .bar span{margin-left:8px}
.vis pre{margin:0;padding:16px 18px;font:400 .84rem/1.7 var(--font-mono);color:var(--blue);overflow:auto;white-space:pre}

.form{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:28px;box-shadow:var(--shadow)}
.form h2{font-size:1.45rem;font-family:var(--font-sans)}.form .sub{color:var(--muted);font-size:.94rem;margin:6px 0 20px}
.f{margin-bottom:14px}label{display:block;font-weight:600;font-size:.9rem;margin-bottom:5px}
input,select,textarea{width:100%;padding:12px 13px;border:1.5px solid var(--line);border-radius:10px;background:var(--bg);color:var(--text);font:400 1rem var(--font-sans)}
input:focus,select:focus,textarea:focus{border-color:var(--blue);outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 25%,transparent)}
.err{color:var(--err);font-size:.84rem;min-height:1.1em;margin-top:3px}
.form .btn{width:100%}.note{font-size:.82rem;color:var(--muted);margin-top:10px;text-align:center}

/* content */
.two{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:start}
@media(max-width:900px){.two{grid-template-columns:1fr;gap:28px}}
.media{border-radius:16px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);margin-top:26px}
.media img{display:block;width:100%;aspect-ratio:3/2;object-fit:cover}
.cmpw{overflow-x:auto;border:1px solid var(--line);border-radius:16px;background:var(--panel);margin-top:8px}
table{border-collapse:collapse;width:100%;min-width:600px}
th,td{padding:15px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--panel-2);font-size:.88rem;color:var(--muted);font-weight:600}tr:last-child td{border-bottom:0}
td:nth-child(2){color:var(--muted)}td:last-child{color:var(--ok);font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.chip{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:8px 16px;font-weight:500;font-size:.93rem}
details{border-bottom:1px solid var(--line)}
summary{cursor:pointer;list-style:none;display:flex;align-items:center;gap:12px;padding:17px 0;font-weight:600;font-size:1.05rem}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:auto;font-size:1.5rem;color:var(--blue);transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
.wk{font:500 .74rem var(--font-mono);background:var(--panel-2);color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:3px 9px;white-space:nowrap}
details ul{margin:0 0 16px;padding-left:20px;color:var(--muted)}details p{color:var(--muted);padding-bottom:16px}

.cert{border:7px double var(--gold);background:var(--panel);border-radius:8px;padding:38px 24px;text-align:center;max-width:540px;margin-inline:auto;box-shadow:var(--shadow)}
.cert small{color:var(--muted);font-weight:500}.cert h3{font-family:var(--font-serif);font-size:1.8rem;margin:8px 0 16px;color:var(--gold-text)}
.cert .nm{display:inline-block;font-family:var(--font-serif);font-weight:700;font-size:1.5rem;border-bottom:1.5px solid var(--line);padding:4px 34px;margin:8px 0 14px}
.cert .sig{display:flex;justify-content:space-between;gap:12px;margin-top:30px;font-size:.8rem;color:var(--muted)}

.plan{display:flex;flex-direction:column}.plan.hot{border:2px solid var(--blue)}
.plan ul{margin:14px 0 22px;padding-left:20px;color:var(--muted);flex:1}.plan .btn{width:100%}
a.course{display:block;text-decoration:none;transition:transform .15s,border-color .15s}
a.course:hover{transform:translateY(-3px);border-color:var(--blue)}
a.course h3{margin-bottom:2px}.more{display:inline-block;margin-top:14px;color:var(--blue);font-weight:600;font-size:.92rem}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.steps .card::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:var(--gold);color:#2b2000;font-weight:700;margin-bottom:14px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-top:34px}
.stats div{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--muted);font-size:.9rem}
.stats strong{display:block;color:var(--text);font-size:1.02rem}

.final{background:var(--final-bg);text-align:center;border-block:1px solid var(--line)}
.final .lead{margin-inline:auto}.final .btn{margin-top:26px}
.prose{max-width:780px}.prose h2{font-size:1.4rem;font-family:var(--font-sans);margin:34px 0 10px}.prose p,.prose li{color:var(--muted);margin-top:10px}.prose ul{padding-left:22px}
.page-top{padding:52px 0 8px}

footer{padding:54px 0 90px;border-top:1px solid var(--line);color:var(--muted);font-size:.94rem;background:var(--alt)}
.fg{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
@media(max-width:860px){.fg{grid-template-columns:1fr 1fr}}@media(max-width:520px){.fg{grid-template-columns:1fr}}
footer h4{margin:0 0 12px;color:var(--text);font-size:.98rem}
footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
footer a{text-decoration:none}footer a:hover{color:var(--text);text-decoration:underline}
.copy{margin-top:36px;padding-top:20px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:.86rem}
.float{position:fixed;right:16px;bottom:16px;z-index:35;width:60px;height:60px;padding:0;border-radius:50%;box-shadow:0 8px 22px rgba(0,0,0,.35)}
.float svg{width:32px;height:32px;fill:#fff}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* SEO upgrade additions */
.loc{margin-top:12px;color:var(--muted);font-size:.95rem}
.meta{color:var(--muted);font-size:.9rem;margin-top:10px}
.prose a{color:var(--blue)}
.prose .intro{font-size:1.1rem;color:var(--text);margin-top:20px}
.prose ol{padding-left:22px}.prose li{margin-top:8px}
.prose pre.code{margin:16px 0;padding:16px 18px;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:auto;font:400 .88rem/1.65 var(--font-mono);color:var(--blue);white-space:pre}
.prose .box{margin-top:44px}.prose .box h2{margin-top:0;font-family:var(--font-serif);font-size:1.5rem;color:var(--text)}.prose .box p{color:var(--muted)}
.mapbox{border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow);min-height:360px;background:var(--panel)}
.mapbox iframe{display:block;width:100%;height:100%;min-height:360px;border:0}
a.course .eyebrow{margin-bottom:6px}

/* logo, loader, filters, carousel */
:root[data-theme="dark"] .logo{background:#fff;padding:3px 8px;border-radius:10px}
.flogo{display:inline-block;margin-bottom:14px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
[hidden]{display:none!important}

#water-loader{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;background:var(--bg);transition:opacity .5s ease,visibility .5s}
#water-loader.hide{opacity:0;visibility:hidden}
.no-loader #water-loader{display:none}
.wl-card{background:#fff;border-radius:22px;padding:22px 28px;box-shadow:var(--shadow)}
.wl-logo{position:relative;width:min(300px,64vw)}
.wl-logo img{display:block;width:100%;height:auto}
.wl-base{filter:grayscale(1);opacity:.16}
.wl-fill{position:absolute;inset:0;clip-path:inset(100% 0 0 0);animation:wl-fill 1.5s ease-in-out forwards}
@keyframes wl-fill{to{clip-path:inset(0 0 0 0)}}
@media(prefers-reduced-motion:reduce){.wl-fill{animation:none;clip-path:none}}

.filters{display:flex;flex-wrap:wrap;gap:10px;margin:-10px 0 26px}
.filter-btn{border:1.5px solid var(--line);background:var(--panel);color:var(--text);border-radius:999px;padding:9px 18px;font:600 .92rem var(--font-sans);cursor:pointer}
.filter-btn:hover{border-color:var(--blue)}
.filter-btn.active{background:var(--blue);border-color:var(--blue);color:var(--on-blue)}

.carousel{position:relative}
.car-viewport{overflow:hidden;padding:18px 6px}
.car-track{display:flex;gap:20px;transition:transform .6s ease}
.car-slide{flex:0 0 calc((100% - 40px) / 3);min-width:0}
@media(max-width:992px){.car-slide{flex-basis:calc((100% - 20px) / 2)}}
@media(max-width:576px){.car-slide{flex-basis:100%}}
.car-slide a.course{height:100%}
.car-slide .card{transition:transform .3s,box-shadow .3s,border-color .3s}
.car-slide.center-active .card{border-color:var(--blue);box-shadow:0 0 0 1px var(--blue),0 10px 26px var(--glow);transform:translateY(-4px)}
.car-controls{display:flex;gap:10px;justify-content:center;margin-top:10px}
.car-controls .ib{font-size:1.05rem}

/* let grid columns shrink so wide tables scroll inside their box instead of widening the page */
.two>*,.hg>*{min-width:0}