:root{--steel:#1f262e;--steel2:#2c3640;--plate:#f4f5f6;--line:#d9dde1;--ink:#1b1f23;--muted:#5b6670;--hot:#e8620c;--hot2:#c94f05;--weld:#1e7a3c;--replace:#a86400;--unsafe:#b3261e;--r:10px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:#fff}
a{color:#0b5cad}img{max-width:100%}
.wrap{max-width:1080px;margin:0 auto;padding:0 18px}.narrow{max-width:760px}
h1{font-size:clamp(1.8rem,5vw,2.8rem);line-height:1.15;margin:.6em 0 .3em}h2{font-size:1.4rem;margin:1.6em 0 .5em}h3{margin:.2em 0}
.top{background:var(--steel);color:#fff;position:sticky;top:0;z-index:10;border-bottom:3px solid var(--hot)}
.bar{display:flex;align-items:center;justify-content:space-between;height:58px}
.logo{color:#fff;text-decoration:none;font-weight:600;font-size:1.15rem;letter-spacing:.2px}.logo b{color:#ffb27a}.logo .dotcom{opacity:.6;font-weight:400}.spark{margin-right:4px}
.logo.small{color:#fff;margin:0 0 .4em}
.links a{color:#e6e9ec;text-decoration:none;margin-left:20px;font-weight:500}.links a:hover{color:#ffb27a}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:1.6rem}
@media(max-width:720px){.menu-btn{display:block}.links{display:none;position:absolute;top:58px;left:0;right:0;background:var(--steel2);padding:8px 18px}.nav-open .links{display:block}.links a{display:block;margin:10px 0}}
.hero{background:linear-gradient(135deg,#1f262e 0%,#36424d 60%,#2a323a 100%);color:#fff;padding:46px 0 54px}
.hero h1{margin-top:.1em;font-size:clamp(2.3rem,7vw,3.6rem)}.eyebrow{color:#ffb27a;font-weight:600;margin:0}
.lead{font-size:1.25rem;max-width:640px}.hero .lead{color:#e6e9ec}
.hero-search{display:flex;gap:8px;max-width:620px;margin:22px 0 10px}
.hero-search input,.search{flex:1;font-size:1.05rem;padding:14px 16px;border-radius:var(--r);border:2px solid var(--line);min-width:0}
.hero-search input{border-color:transparent}.hero-sub{color:#b9c2ca;font-size:.92rem}
.search{width:100%;margin:10px 0 20px}
.btn{display:inline-block;padding:13px 20px;border-radius:var(--r);font-weight:700;text-decoration:none;border:0;cursor:pointer;font-size:1rem;text-align:center}
.btn-hot{background:var(--hot);color:#fff}.btn-hot:hover{background:var(--hot2)}
.btn-ghost{background:transparent;color:#fff;border:2px solid #fff}.btn-disabled{background:#c5cbd0;color:#555;cursor:not-allowed}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:14px 0}
.card{display:block;border:1px solid var(--line);border-radius:var(--r);padding:16px;text-decoration:none;color:var(--ink);background:var(--plate);transition:.15s}
.card:hover{border-color:var(--hot);transform:translateY(-2px);box-shadow:0 4px 14px rgba(0,0,0,.08)}.card p{color:var(--muted);margin:.3em 0 0;font-size:.95rem}
.chip{display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.6px;padding:3px 8px;border-radius:4px;color:#fff}
.v-weld{background:var(--weld)}.v-replace{background:var(--replace)}.v-unsafe{background:var(--unsafe)}
.t-weld{color:var(--weld)}.t-replace{color:var(--replace)}.t-unsafe{color:var(--unsafe)}
.how{background:var(--plate);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:10px 0 26px;margin-top:30px}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.steps li{background:#fff;border-radius:var(--r);padding:18px;border:1px solid var(--line)}
.steps span{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--steel);color:#ffb27a;font-weight:800}
.ask-cta{background:#fff7f1;border-top:4px solid var(--hot);padding:26px 0 32px;margin-top:34px}.ask-cta h2{margin-top:.3em}
.local{background:var(--steel);color:#fff;padding:28px 0}.local h2{margin-top:0;color:#ffb27a}.local a:not(.btn){color:#ffb27a}
.local-in{display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}.local-in>div:first-child{flex:1 1 420px}
.local-btns{display:flex;gap:10px;flex-wrap:wrap}
.trust-grid{display:grid;grid-template-columns:260px 1fr;gap:22px;align-items:start}@media(max-width:720px){.trust-grid{grid-template-columns:1fr}}
.photo-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:16px 0 30px}@media(max-width:600px){.photo-row{grid-template-columns:1fr}}
.photo-ph{min-height:170px;display:grid;place-items:center;text-align:center}
.guide{max-width:780px}.crumbs{font-size:.88rem;color:var(--muted);margin-top:18px}.crumbs a{color:var(--muted)}
.verdict{display:flex;align-items:center;gap:12px;border-radius:var(--r);padding:14px 16px;color:#fff;margin:14px 0 6px;flex-wrap:wrap}
.vtag{font-weight:900;letter-spacing:1px;background:rgba(0,0,0,.2);padding:4px 10px;border-radius:6px}.vtext{font-weight:600;font-size:1.08rem}
.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:.95rem}th,td{border-bottom:1px solid var(--line);padding:9px 8px;text-align:left;vertical-align:top}th{background:var(--plate)}.num{white-space:nowrap;font-weight:700}
.note,.small{font-size:.88rem;color:var(--muted)}
.flags li{margin:.3em 0}.safety{background:#fdecea;border-left:5px solid var(--unsafe);padding:2px 16px 8px;border-radius:6px;margin-top:24px}.safety h2{margin-top:.6em}
.faq details{border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:8px 0}.faq summary{font-weight:600;cursor:pointer}
.sources{font-size:.88rem}
.intake{display:grid;gap:14px;background:var(--plate);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin:20px 0}
.intake label{display:grid;gap:5px;font-weight:600}.intake input,.intake select,.intake textarea{font:inherit;padding:11px;border:1px solid #b9c0c6;border-radius:8px;background:#fff;font-weight:400}
.intake .check{display:flex;gap:9px;font-weight:400;align-items:flex-start}.intake .check input{margin-top:5px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:520px){.row2{grid-template-columns:1fr}}
.form-msg{font-weight:600;color:#664d03}.ticks{padding-left:1.1em}
.contact{list-style:none;padding:0}.contact li{margin:.4em 0}.hidden{display:none}
.foot{background:#151a1f;color:#b9c2ca;padding:30px 0 14px;margin-top:0;font-size:.92rem}.foot a{color:#ffb27a}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.fine{font-size:.78rem;margin-top:16px;color:#87929c}
.btn-dark{background:var(--steel);color:#fff}.btn-dark:hover{background:var(--steel2)}
.ask-cta .local-btns{margin-top:6px}.local-btns.center{justify-content:center;margin:10px 0 6px}
.free-banner{background:#e8f5ec;border:1px solid #b7dfc3;color:#14532d;border-radius:var(--r);padding:12px 14px;margin:14px 0;font-size:1.05rem}
.step{margin:0;font-size:.95rem}.trust-panel{max-width:760px}
.rick-note{background:var(--plate);border-left:5px solid var(--hot);border-radius:6px;padding:12px 16px;margin:20px 0}
/* Stripe $19 checkout (ask-a-welder) */
.pay-box{background:#fff;border:2px solid var(--line);border-radius:var(--r);padding:18px;margin:20px 0}
.pay-box h2{margin-top:0}
#checkout-form{min-height:60px;margin:12px 0}
.checkout-msg{display:none;background:#fff8e1;border:1px solid #f0d68a;color:#664d03;border-radius:8px;padding:12px 14px;font-weight:600}
.checkout-msg.show{display:block}
/* Amazon affiliate tools section (guides) */
.tools{background:var(--plate);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin:22px 0}
.tools h2{margin-top:0}
.tool-list{list-style:none;padding:0;margin:0}
.tool-list li{padding:9px 0;border-bottom:1px solid var(--line)}
.tool-list li:last-child{border-bottom:0}
.tool-list a{font-weight:700}
.tool-why{display:block;font-size:.95rem;color:#4b5563;margin-top:2px}
.tools-warn{background:#fdecec;border:1px solid #f3b4b4;color:#7f1d1d;border-radius:8px;padding:10px 12px}
.aff-note{color:#4b5563;margin:10px 0 0}
/* Reviews */
.rv-badge{display:inline-block;background:#e8f5ec;border:1px solid #b7dfc3;color:#14532d;border-radius:999px;padding:6px 12px;font-weight:700;margin:4px 0 12px}
.rv-verdict{background:var(--steel);color:#fff;border-radius:var(--r);padding:18px 20px;margin:14px 0}
.rv-verdict blockquote{font-size:1.45rem;font-weight:800;margin:8px 0 4px;line-height:1.25}
.rv-verdict .rv-by{color:#cfd6dc;margin:0 0 10px;font-size:.95rem}
.rv-stars{color:#ffb020;font-size:1.4rem;letter-spacing:2px}.rv-stars span{color:#fff;font-size:1rem;font-weight:700;letter-spacing:0;margin-left:6px}
.rv-photos{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.rv-fig{margin:0}.rv-fig img{width:100%;height:auto;border-radius:var(--r);display:block}
.rv-fig figcaption{font-size:.92rem;color:var(--muted);margin-top:6px}
.rv-specs{background:var(--plate);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin:22px 0}
.rv-specs h2{margin-top:0}.rv-specs table{width:100%;border-collapse:collapse}
.rv-specs th,.rv-specs td{text-align:left;padding:7px 6px;border-bottom:1px solid var(--line);vertical-align:top}.rv-specs th{width:38%}
.rv-cta{margin:16px 0}
.rv-card img{width:100%;height:220px;object-fit:cover;border-radius:8px;margin-bottom:10px}
.uses-callout{display:grid;grid-template-columns:200px 1fr;gap:20px;align-items:center;background:var(--plate);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin:10px 0 20px}
.uses-callout img{width:100%;height:220px;object-fit:cover;border-radius:8px}
@media (max-width:640px){.rv-photos{grid-template-columns:1fr}.uses-callout{grid-template-columns:1fr}}