:root{--navy:#072a5e;--navy2:#0a3977;--blue:#128cff;--cyan:#11d7eb;--ink:#10284c;--muted:#60728d;--line:#dce9f6;--soft:#f5faff;--white:#fff;--green:#15956a;--shadow:0 14px 38px rgba(11,54,105,.10);--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:#fff;line-height:1.65}
a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}.wrap{width:min(var(--max),calc(100% - 34px));margin:auto}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;gap:24px}.logo img{display:block;width:184px;max-height:52px;object-fit:contain}.navlinks{display:flex;gap:18px;align-items:center;margin-left:auto;flex-wrap:wrap}.navlinks a{font-size:14px;font-weight:720;color:#17365f}.pill{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:10px 17px;background:linear-gradient(135deg,var(--blue),#0872df);color:#fff!important;font-weight:800;text-decoration:none!important;box-shadow:0 8px 20px rgba(18,140,255,.22)}
.hero{background:linear-gradient(105deg,#dff4ff 0,#f8fcff 50%,#eaf6ff 100%);border-bottom:1px solid var(--line);overflow:hidden}.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:34px;align-items:center;padding:58px 0}.eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.15em;color:#0872df;font-weight:850}.hero h1{font-size:clamp(44px,6vw,72px);letter-spacing:-2.7px;line-height:.98;margin:12px 0 18px}.hero h1 span{color:var(--blue)}.lead{font-size:20px;max-width:690px;color:#365677}.hero-points{display:flex;gap:20px;flex-wrap:wrap;margin-top:25px}.hero-points span{font-weight:760}.diagnostic{background:#fff;border:1px solid #d7e8f8;border-radius:22px;padding:22px;box-shadow:var(--shadow)}.diagnostic h2{margin:0 0 5px;font-size:24px}.diag-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:16px 0}.diag-grid a{border:1px solid var(--line);border-radius:12px;padding:15px 8px;text-align:center;color:var(--ink);font-size:13px;font-weight:760;background:#fff}.diag-grid a:hover{border-color:#8cc8ff;text-decoration:none;background:#f7fbff}
.provider-strip{padding:18px 0;border-bottom:1px solid var(--line);background:#fbfdff}.provider-list{display:flex;gap:18px;flex-wrap:wrap;font-size:14px;font-weight:780;color:#2c4b72}
.section{padding:45px 0}.section.alt{background:var(--soft)}.section h2,.content h2{font-size:31px;letter-spacing:-.8px;line-height:1.15;margin:0 0 9px}.sub{color:var(--muted);margin:0 0 22px}.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:19px;box-shadow:0 6px 18px rgba(11,54,105,.04)}.card h3{margin:10px 0 6px;font-size:19px}.icon{width:46px;height:46px;border-radius:50%;background:#e8f5ff;display:flex;align-items:center;justify-content:center;font-size:24px}.card-cta{display:block;margin-top:14px;padding:9px 12px;border-radius:10px;background:#e8f5ff;text-align:center;font-weight:800}
.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.product{background:#fff;border:1px solid var(--line);border-radius:15px;padding:15px;position:relative}.product img{width:100%;height:150px;object-fit:contain;background:#fff}.product-placeholder{height:150px;border-radius:12px;background:linear-gradient(145deg,#eef7ff,#fff);display:flex;align-items:center;justify-content:center;font-size:50px}.product h3{font-size:16px;line-height:1.3;margin:10px 0 7px}.specs{font-size:13px;color:#516782}.specs strong{color:#17365f}.price{font-size:22px;font-weight:850;margin:9px 0}.small{font-size:12px;color:#74869f}.compare-box{margin-top:10px}.compare-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.compare-table th,.compare-table td{padding:12px;border-bottom:1px solid var(--line);text-align:left;font-size:14px}.compare-table th{background:#eef7ff}
.star-banner{border-radius:20px;overflow:hidden;background:linear-gradient(105deg,#062d65,#0b67c6);color:#fff;padding:30px;display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.star-banner h2{margin:0;font-size:31px}.star-banner p{color:#d9ecff}
.content{max-width:860px;margin:auto;padding:48px 0}.content h1{font-size:46px;letter-spacing:-1.6px;line-height:1.05;margin:8px 0 14px}.content h2{margin-top:46px}.content h3{font-size:22px;margin-top:30px}.content p,.content li{font-size:17px;color:#294664}.notice{padding:16px 18px;border-left:4px solid var(--blue);background:#eef8ff;border-radius:10px;margin:22px 0}.affiliate{background:#fff7e7;border:1px solid #f0d79e;border-radius:12px;padding:13px 15px;font-size:14px}
.keyword-meta{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 24px}.tag{background:#eef7ff;border:1px solid #d6e9fb;border-radius:999px;padding:6px 10px;font-size:12px;font-weight:760;color:#315676}.tm-note{font-size:13px;color:#617792;background:#fafcff;border:1px solid var(--line);padding:12px 14px;border-radius:10px}
.speed-shell{border:1px solid var(--line);border-radius:20px;padding:26px;background:#f8fbff;text-align:center}.speed-number{font-size:74px;font-weight:900}.speed-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}.metric{padding:16px;background:#fff;border:1px solid var(--line);border-radius:12px}
footer{background:#062a5d;color:#d7e9ff;padding:42px 0 28px;margin-top:55px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:25px}footer a{color:#fff}.footer-logo img{width:180px;filter:brightness(0) invert(1)}.fine{font-size:12px;color:#9db7d5;margin-top:30px}.amazon-disclaimer{font-size:11px;color:#6a7890;margin-top:12px}
@media(max-width:930px){.hero-grid,.star-banner{grid-template-columns:1fr}.grid4,.products-grid{grid-template-columns:repeat(2,1fr)}.grid3{grid-template-columns:1fr 1fr}.navlinks{display:none}}
@media(max-width:620px){.grid4,.grid3,.products-grid,.footer-grid{grid-template-columns:1fr}.diag-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:45px}.wrap{width:min(var(--max),calc(100% - 24px))}.content h1{font-size:38px}.speed-metrics{grid-template-columns:1fr}}


/* image-rich v4 enhancements */
.hero-split-image{border-radius:22px;overflow:hidden;box-shadow:var(--shadow);min-height:420px;background:#fff;border:1px solid var(--line)}
.hero-split-image img{display:block;width:100%;height:100%;object-fit:cover}
.page-hero{margin:18px 0 28px;background:#fff;border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:0 10px 30px rgba(11,54,105,.06)}
.page-hero img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.page-hero figcaption{padding:12px 16px;font-size:13px;color:#617792;background:#fbfdff;border-top:1px solid var(--line)}
.card.thumb-card{padding:0;overflow:hidden}
.card.thumb-card .card-body{padding:18px 18px 19px}
.card-thumb{display:block;width:100%;height:170px;object-fit:cover;background:#f5faff;border-bottom:1px solid var(--line)}
.tool-thumb{display:block;width:100%;height:145px;object-fit:cover;background:#f5faff;border-radius:14px;margin-bottom:14px;border:1px solid var(--line)}
.article-hero-inline{margin:22px 0 26px}
.article-hero-inline img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:18px;border:1px solid var(--line);box-shadow:0 10px 28px rgba(11,54,105,.06)}
.article-hero-inline figcaption{font-size:13px;color:#617792;margin-top:10px}
.lead-grid{display:grid;grid-template-columns:1.02fr .98fr;gap:20px;align-items:center;margin:20px 0 28px}
.lead-grid .summary-card{background:#f7fbff;border:1px solid var(--line);border-radius:18px;padding:22px}
.summary-list{margin:12px 0 0;padding-left:20px;color:#365677}
.summary-list li{margin:6px 0}
.image-note{font-size:12px;color:#6e7f96}
.section-visual{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch}
.section-visual .visual-copy{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}
.section-visual img{width:100%;height:100%;object-fit:cover;border-radius:18px;border:1px solid var(--line)}
@media(max-width:930px){.lead-grid,.section-visual{grid-template-columns:1fr}.hero-split-image{min-height:auto}.card-thumb{height:150px}.tool-thumb{height:135px}}

.hero-side-stack{display:grid;gap:18px}