:root{
  --ink:#172033;--muted:#61708a;--bg:#f6f8fb;--card:#ffffff;--line:#dfe5ee;
  --brand:#f06445;--brand2:#ef8d4e;--deep:#19243d;--soft:#fff3ed;--ok:#edf8f1;
  --shadow:0 12px 34px rgba(28,42,69,.08);--radius:18px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);line-height:1.68}
a{color:#b9472f;text-decoration-thickness:1px;text-underline-offset:3px}
img,svg{max-width:100%} .wrap{width:min(1160px,92%);margin:auto}
.skip{position:absolute;left:-9999px}.skip:focus{left:1rem;top:1rem;background:white;padding:.7rem 1rem;z-index:999;border-radius:8px}
.topbar{background:var(--deep);color:white;font-size:.86rem;text-align:center;padding:.45rem 1rem}
.site-header{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;gap:1.1rem;min-height:74px}
.logo{display:flex;align-items:center;gap:.65rem;font-weight:850;color:var(--deep);text-decoration:none;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:white;font-size:1.05rem;box-shadow:0 7px 18px rgba(240,100,69,.25)}
.nav{display:flex;gap:1rem;align-items:center;margin-left:auto}.nav a{color:#34415a;text-decoration:none;font-weight:650;font-size:.94rem}
.nav a:hover{color:var(--brand)} .cta{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;background:linear-gradient(135deg,var(--brand),var(--brand2));color:white!important;text-decoration:none!important;font-weight:800;border-radius:11px;padding:.75rem 1rem;box-shadow:0 8px 20px rgba(240,100,69,.2)}
.cta.secondary{background:var(--deep);box-shadow:none}.menu-btn{display:none;margin-left:auto;border:1px solid var(--line);background:white;border-radius:10px;padding:.55rem .7rem;font-weight:800}
.hero{padding:64px 0 38px}.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
.eyebrow{display:inline-block;text-transform:uppercase;letter-spacing:.09em;font-size:.74rem;font-weight:900;color:#a8422c;background:var(--soft);padding:.35rem .6rem;border-radius:999px}
h1{font-size:clamp(2.15rem,5vw,4.2rem);line-height:1.04;letter-spacing:-.045em;margin:.65rem 0 1rem}
h2{font-size:clamp(1.45rem,3vw,2.25rem);line-height:1.18;letter-spacing:-.025em;margin-top:2.2rem}
h3{line-height:1.25}.lead{font-size:1.16rem;color:#52617a;max-width:760px}
.hero-card,.card,.sidebar-card,.callout{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:26px}.speed-visual{min-height:300px;display:grid;place-items:center;background:radial-gradient(circle at 60% 40%,#fff3ed 0,#fff 52%,#f7f9fc 100%);overflow:hidden}
.gauge{width:210px;height:210px;border-radius:50%;border:24px solid #edf1f6;border-top-color:var(--brand);border-right-color:var(--brand2);transform:rotate(35deg);position:relative}
.gauge:after{content:"";position:absolute;width:8px;height:80px;background:var(--deep);left:calc(50% - 4px);top:42px;transform-origin:bottom;transform:rotate(52deg);border-radius:8px}
.gauge-label{position:absolute;text-align:center;font-weight:900;font-size:1.1rem;margin-top:242px;color:var(--deep)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{padding:22px}.card h3{margin-top:.2rem}.card p{color:var(--muted)}
.section{padding:34px 0}.section.alt{background:white;border-block:1px solid var(--line)}
.breadcrumbs{font-size:.86rem;color:var(--muted);padding-top:20px}.breadcrumbs a{color:var(--muted)}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 310px;gap:34px;align-items:start;padding:24px 0 54px}
.article{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,4vw,44px);box-shadow:var(--shadow)}
.article h1{font-size:clamp(2rem,4vw,3.25rem)}.article p,.article li{font-size:1.02rem}.article ul,.article ol{padding-left:1.35rem}
.answer{font-size:1.08rem;background:#f8fafc;border-left:4px solid var(--brand);padding:1rem 1.15rem;border-radius:0 12px 12px 0}
.note{background:#f8fafc;border:1px solid var(--line);padding:1rem 1.15rem;border-radius:12px}
.callout{padding:22px;margin:28px 0;background:linear-gradient(135deg,#fff7f3,#fff)}
.callout h3{margin:.15rem 0 .45rem}.callout p{color:#5b6678}.disclosure{font-size:.83rem;color:#6b7485}
.sidebar{position:sticky;top:98px}.sidebar-card{padding:20px;margin-bottom:16px}.sidebar-card h3{margin-top:0}
.toc a{display:block;padding:.35rem 0;color:#48566e;text-decoration:none;border-bottom:1px dashed #e1e5ec;font-size:.92rem}
.related{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related a{display:block;background:#f8fafc;border:1px solid var(--line);padding:14px;border-radius:12px;text-decoration:none;font-weight:700}
.table-wrap{overflow:auto}.compare-table{width:100%;border-collapse:collapse;font-size:.92rem}.compare-table th,.compare-table td{border:1px solid var(--line);padding:.7rem;text-align:left;vertical-align:top}.compare-table th{background:#f8fafc}
.source-list{font-size:.9rem;color:#58657b}.source-list a{word-break:break-word}
.site-footer{background:var(--deep);color:#dce3ef;padding:44px 0 92px}.footer-grid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:26px}.site-footer h3{color:white}.site-footer a{color:#dce3ef}.site-footer ul{list-style:none;padding:0}.site-footer li{margin:.4rem 0}.fine{font-size:.82rem;color:#aeb8c9;margin-top:28px;border-top:1px solid #33405b;padding-top:20px}
.mobile-sticky{display:none;position:fixed;left:0;right:0;bottom:0;z-index:50;padding:.65rem;background:rgba(25,36,61,.96);box-shadow:0 -6px 18px rgba(0,0,0,.12)}.mobile-sticky .cta{width:100%}
.kicker-row{display:flex;gap:12px;flex-wrap:wrap;margin:1.1rem 0}.pill{background:#f0f3f7;color:#46536a;padding:.35rem .6rem;border-radius:999px;font-size:.8rem;font-weight:700}
@media(max-width:900px){.nav{display:none;position:absolute;top:74px;left:0;right:0;background:white;border-bottom:1px solid var(--line);padding:1rem 4%;flex-direction:column;align-items:stretch}.nav.open{display:flex}.menu-btn{display:block}.header-cta{display:none}.hero-grid,.article-layout,.footer-grid{grid-template-columns:1fr}.sidebar{position:static}.sidebar .toc{display:none}.grid{grid-template-columns:1fr 1fr}.mobile-sticky{display:block}}
@media(max-width:620px){.grid,.related{grid-template-columns:1fr}.hero{padding-top:38px}.article{border-radius:12px;padding:22px 18px}.topbar{font-size:.78rem}.logo span:last-child{font-size:.94rem}}