:root{--bg:#f5f7f6;--surface:#fff;--ink:#15302f;--muted:#4a5e5c;--accent:#0b6e6a;--accent-2:#08524f;--blush:#f6e3dc;--blush-ink:#7a3b2a;--warn-bg:#fff3df;--warn:#7a4300;--line:#d3dddb;--display:Bahnschrift,"DIN Alternate","DIN Next","Roboto Condensed","Arial Narrow",system-ui,sans-serif;--body:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--w:76rem;--measure:42rem}
@media (prefers-color-scheme:dark){:root{--bg:#0f1c1b;--surface:#152625;--ink:#e3ecea;--muted:#a9bab7;--accent:#5fc4bc;--accent-2:#8ad8d1;--blush:#2c2220;--blush-ink:#f0bba9;--warn-bg:#2d2310;--warn:#f3c77a;--line:#2a3e3c}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:1rem}
body{margin:0;background:var(--bg);color:var(--ink);font:1.0625rem/1.65 var(--body)}
a{color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--accent-2);text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:var(--surface);padding:.5rem 1rem;z-index:9}
.wrap{max-width:var(--w);margin:0 auto;padding:0 1.25rem}
h1,h2,h3{font-family:var(--display);font-stretch:condensed;line-height:1.15;letter-spacing:-.005em;margin:2.2em 0 .5em;font-weight:600}
h1{font-size:clamp(1.85rem,1.2rem + 3vw,3.4rem);hyphens:auto;overflow-wrap:break-word;margin-top:.4em;font-weight:700}
h2{font-size:clamp(1.5rem,1.2rem + 1.2vw,2.05rem);padding-top:.6em;border-top:1px solid var(--line)}
h3{font-size:1.25rem;margin-top:1.6em}
p,ul,ol{margin:0 0 1em}li{margin-bottom:.35em}
strong{font-weight:650}
/* header */
.site-header{border-bottom:1px solid var(--line);background:var(--surface)}
.site-header .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:.25rem 1.5rem;padding-top:.6rem;padding-bottom:.6rem}
.logo{display:flex;align-items:center;font:700 1.2rem/1 var(--display);font-stretch:condensed;color:var(--ink);text-decoration:none;min-height:48px}
.logo span{color:var(--muted);font-weight:400}
.logo svg{flex:none;margin-right:.5rem}
.nav{flex:1 1 100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 -1.25rem;padding:0 1.25rem}
.nav ul{display:flex;gap:.25rem;list-style:none;margin:0;padding:0;white-space:nowrap}
.nav li{margin:0}
.nav a{display:block;padding:.75rem .7rem;color:var(--ink);text-decoration:none;font-size:.95rem;border-radius:4px}
.nav a:hover,.nav a[aria-current]{background:var(--bg);color:var(--accent)}
@media (min-width:80rem){.site-header .wrap{flex-wrap:nowrap}.nav{flex:0 1 auto;margin:0 0 0 auto;padding:0}.nav a{padding:.75rem .5rem;font-size:.92rem}}
/* breadcrumbs + meta */
.crumbs{font-size:.875rem;color:var(--muted);margin:1.25rem 0 0}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap}
.crumbs li{margin:0}.crumbs li+li::before{content:"/";padding:0 .5rem;color:var(--line)}
.crumbs a{color:var(--muted)}
.byline{color:var(--muted);font-size:.9rem;margin:-.2em 0 1.5rem}
/* layout */
.layout{display:grid;gap:2rem;padding-bottom:3rem}
.content{max-width:var(--measure);min-width:0}
.lead{font-size:1.2rem;color:var(--muted);max-width:38rem}
@media (min-width:68rem){.layout{grid-template-columns:minmax(0,var(--measure)) 15rem;justify-content:space-between}.toc{position:sticky;top:1.5rem;align-self:start;max-height:calc(100vh - 3rem);overflow:auto}}
.toc{font-size:.92rem;border-left:3px solid var(--accent);padding:.25rem 0 .25rem 1rem}
.toc summary{cursor:pointer;font-weight:650;min-height:44px;display:flex;align-items:center}
.toc ol{margin:.25rem 0 0;padding-left:1.1rem}
.toc a{color:var(--ink);text-decoration:none;display:block;padding:.2rem 0}
.toc a:hover{color:var(--accent);text-decoration:underline}
/* hero + timescale (signature) */
.hero{padding:2.5rem 0 1rem}
.hero h1{max-width:16ch;font-size:clamp(1.9rem,1rem + 4.6vw,4.4rem);line-height:1.02;margin:0 0 .4em}
.scale{margin:2rem 0 .75rem;max-width:52rem}
.scale-axis{position:relative;height:2rem;border-bottom:2px solid var(--ink);background:repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 10%) bottom/100% .55rem no-repeat}
.scale-axis span{position:absolute;bottom:.7rem;white-space:nowrap;font:600 .8rem/1 var(--display);transform:translateX(-50%);color:var(--muted)}
.scale-row{display:grid;grid-template-columns:9.5rem 1fr;align-items:center;gap:.75rem;margin-top:.55rem;font-size:.92rem}
.scale-row a{color:var(--ink)}
.scale{padding-right:1.4rem}.scale-bar{position:relative;height:1.35rem;background:var(--surface);border:1px solid var(--line)}
.scale-bar i{position:absolute;top:0;bottom:0;left:var(--a);right:calc(100% - var(--b));background:var(--accent);opacity:.85}
.scale-bar i::after{content:"";position:absolute;right:-2px;top:-4px;bottom:-4px;width:3px;background:var(--blush-ink)}
.scale-note{font-size:.85rem;color:var(--muted);max-width:52rem}
@media (max-width:30rem){.scale-row{grid-template-columns:6.5rem 1fr;gap:.5rem;font-size:.85rem}}
/* boxes */
.tldr{background:var(--blush);border-left:4px solid var(--blush-ink);padding:1rem 1.25rem;margin:1.5rem 0}
.tldr p:last-child,.tldr ul:last-child,.warn p:last-child,.warn ul:last-child{margin-bottom:0}
.tldr strong:first-child{display:block;font-family:var(--display);font-stretch:condensed;font-size:1.1rem;margin-bottom:.3rem}
.warn{background:var(--warn-bg);color:var(--ink);border-left:4px solid var(--warn);padding:1rem 1.25rem;margin:1.5rem 0}
.warn strong:first-child{color:var(--warn)}
.steps{counter-reset:s;list-style:none;padding:0}
.steps>li{counter-increment:s;position:relative;padding:0 0 1rem 3.2rem;margin:0;border-left:2px solid var(--line);margin-left:1.1rem}
.steps>li:last-child{border-left-color:transparent}
.steps>li::before{content:counter(s);position:absolute;left:-1.15rem;top:-.15rem;width:2.2rem;height:2.2rem;border-radius:50%;background:var(--accent);color:var(--surface);font:700 1rem/2.2rem var(--display);text-align:center}
.steps strong{display:block}
/* tables */
.table{overflow-x:auto;margin:1.25rem 0 1.5rem;border:1px solid var(--line);background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{text-align:left;padding:.6rem .8rem;border-bottom:1px solid var(--line);vertical-align:top}
th{font-family:var(--display);font-stretch:condensed;font-weight:600;background:var(--bg)}
tr:last-child td{border-bottom:0}
/* product picks (affiliate) */
.picks{display:grid;gap:1rem;margin:1.5rem 0;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr))}
.pick{background:var(--surface);border:1px solid var(--line);border-top:3px solid var(--accent);padding:1rem 1.1rem;display:flex;flex-direction:column}
.pick h3{margin:.15rem 0 .4rem;font-size:1.15rem}
.pick p{font-size:.95rem;flex:1}
.ad{font-size:.75rem;color:var(--muted)}
.btn{display:inline-block;align-self:flex-start;background:var(--accent);color:var(--surface);text-decoration:none;font-weight:600;padding:.7rem 1.1rem;border-radius:4px;min-height:44px}
.btn:hover{background:var(--accent-2);color:var(--surface)}
.disclose{font-size:.85rem;color:var(--muted);border-top:1px dashed var(--line);padding-top:.75rem;margin-top:2rem}
/* link lists (hubs) */
.links{list-style:none;padding:0;display:grid;gap:0 2rem;grid-template-columns:repeat(auto-fill,minmax(17rem,1fr));margin:1rem 0 1.5rem}
.links li{border-top:1px solid var(--line);padding:.8rem 0;margin:0}
.links li>a{font-weight:650;text-decoration:none;font-family:var(--display);font-stretch:condensed;font-size:1.1rem}
.links li>a:hover{text-decoration:underline}
.links p{margin:.2rem 0 0;font-size:.9rem;color:var(--muted)}
.full .content{max-width:none}
/* faq */
.faq details{border-top:1px solid var(--line);padding:.2rem 0}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:650;padding:.7rem 0;min-height:44px;list-style-position:outside}
.faq details p{margin:0 0 .9rem}
/* footer */
.site-footer{background:var(--ink);color:var(--bg);margin-top:2rem;padding:2.5rem 0 2rem;font-size:.92rem}
@media (prefers-color-scheme:dark){.site-footer{background:#091312;color:var(--ink)}}
.site-footer a{color:inherit}
.foot-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(12rem,1fr))}
.site-footer h2{font-size:1.05rem;border:0;padding:0;margin:0 0 .5rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin:0}.site-footer li a{display:inline-block;padding:.3rem 0}
.fine{margin-top:2rem;opacity:.8;font-size:.82rem;max-width:48rem}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.toc,.picks{display:none}}