:root{color-scheme:dark;--bg:#101727;--panel:#151e30;--text:#edf0f8;--muted:#a0aabc;--line:#2b3548;--blue:#7196ff;--button:#537fff;--button-text:#fff;--soft-blue:#1c2e53;--header:rgba(16,23,39,.94)}
[data-theme="light"]{color-scheme:light;--bg:#f8faff;--panel:#fff;--text:#182339;--muted:#59667b;--line:#dbe2ed;--blue:#355fd4;--button:#3d67e8;--button-text:#fff;--soft-blue:#eaf0ff;--header:rgba(248,250,255,.94)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:16px;line-height:1.7}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--blue);outline-offset:2px}
.wrap{width:min(1060px,calc(100% - 48px));margin:auto}
.skip-link{position:fixed;left:20px;top:-100px;background:var(--button);color:#fff;padding:12px 20px;z-index:100}
.skip-link:focus{top:12px}
.icon{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
header{position:sticky;top:0;z-index:20;background:var(--header);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-size:21px;font-weight:750;letter-spacing:-.7px}
.brand-logo{display:block;width:38px;height:38px}
.nav-end{display:flex;align-items:center;gap:14px}
.icon-btn{border:1px solid var(--line);border-radius:9px;background:transparent;color:var(--muted);width:38px;height:38px;display:grid;place-items:center}
.icon-btn:hover{color:var(--text);background:var(--panel)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--button);color:var(--button-text);border-radius:9px;padding:10px 18px;font-size:14px;font-weight:650;white-space:nowrap}
.article{width:min(740px,calc(100% - 48px));margin:auto;padding-top:44px}
.crumbs{color:var(--muted);font-size:13px;margin:0 0 18px}
.crumbs a:hover{color:var(--text)}
h1{font-size:clamp(30px,4.2vw,40px);font-weight:730;line-height:1.2;letter-spacing:-1.2px;margin:0 0 16px;text-wrap:balance}
.lead{color:var(--muted);font-size:18px;margin:0 0 12px}
.reviewed{color:var(--muted);font-size:13px;margin:0}
h2{font-size:24px;font-weight:660;letter-spacing:-.6px;line-height:1.3;margin:42px 0 12px}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px;padding-left:22px}
li{margin-bottom:8px}
.article p a,.article li a{color:var(--blue);text-decoration:underline;text-underline-offset:2px}
.note{border:1px solid var(--line);border-left:3px solid var(--blue);border-radius:8px;background:var(--panel);padding:14px 18px;margin:22px 0;font-size:15px}
.note p:last-child{margin:0}
.faq-list details{border-bottom:1px solid var(--line);padding:14px 0}
.faq-list summary{font-weight:650;cursor:pointer}
.faq-list p{color:var(--muted);margin:10px 0 0}
.bottom-cta{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:24px 26px;display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:44px}
.bottom-cta h2{font-size:19px;letter-spacing:-.4px;margin:0 0 3px}
.bottom-cta p{font-size:14px;color:var(--muted);margin:0}
.sources{color:var(--muted);font-size:13px;margin-top:30px}
.sources ul{margin:6px 0 0}
footer{border-top:1px solid var(--line);margin-top:60px;padding:25px 0 30px}
.footer-row{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--muted);gap:20px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 23px}
.footer-links a:hover{color:var(--text)}
@media(max-width:600px){.wrap,.article{width:calc(100% - 32px)}.nav{min-height:66px;gap:10px}.nav-end{gap:8px}.nav-end .button{padding:8px 12px;font-size:13px}.icon-btn{width:33px;height:33px}.brand{font-size:19px;gap:9px}.brand-logo{width:34px;height:34px}.article{padding-top:28px}h1{font-size:28px;letter-spacing:-.8px}.lead{font-size:16px}h2{font-size:21px;margin-top:34px}.bottom-cta{flex-direction:column;align-items:flex-start;gap:16px}.footer-row{flex-direction:column;align-items:flex-start;gap:12px}}

/* Phones and tablets: comfortable tap targets, and a header that fits small screens. */
html{-webkit-text-size-adjust:100%}
@media(max-width:800px){
  .brand,.button{min-height:44px}
  .icon-btn{width:44px;height:44px}
  .faq-list summary{padding:9px 0}
  .footer-links a{display:inline-block;padding:11px 0}
}
@media(max-width:370px){
  .nav-end .button{display:none}
}

/* Tables, glossary, and the guides list. */
.article table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:15px}
.article th,.article td{padding:10px 12px 10px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.article thead th{color:var(--muted);font-size:13px}
.glossary dt{font-weight:650;margin-top:18px;scroll-margin-top:90px}
.glossary dd{margin:3px 0 0;color:var(--muted)}
.guide-list{list-style:none;padding:0;margin-top:26px}
.guide-list li{padding:16px 0;border-bottom:1px solid var(--line);margin:0}
.guide-list a{font-weight:650;font-size:17px;color:var(--blue);text-decoration:none}
.guide-list p{margin:3px 0 0;color:var(--muted);font-size:15px}