/* TradeCalcs shared site design system (tc-overhaul-20261031). Same tokens as the home page. */
:root{--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--bg:#f8fafc;--card:#fff;--brand:#2563eb;--brand-d:#1d4ed8;--accent:#f97316;--ok:#16a34a;--r:14px}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img,svg{max-width:100%}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
header.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.nav{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px}
.logo{font-weight:800;font-size:21px;color:var(--ink)}.logo b{color:var(--brand)}.logo:hover{text-decoration:none}
.nav nav a{color:var(--muted);font-weight:600;font-size:15px;margin-left:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 20px;border-radius:10px;font-weight:700;font-size:16px;border:1px solid transparent;cursor:pointer;text-align:center;text-decoration:none!important}
.btn-p{background:var(--brand);color:#fff}.btn-p:hover{background:var(--brand-d)}
.btn-s{background:#fff;color:var(--ink);border-color:var(--line)}.btn-a{background:var(--accent);color:#fff}
.btn-ok{background:var(--ok);color:#fff}.btn-sm{min-height:40px;padding:8px 14px;font-size:14px}.btn-block{width:100%}
section{padding:56px 0}h1{font-size:clamp(30px,4.6vw,46px);line-height:1.1;margin:0 0 14px;letter-spacing:-.02em}
h2{font-size:clamp(24px,3.2vw,32px);line-height:1.15;margin:0 0 12px;letter-spacing:-.01em}h3{margin:0 0 6px;font-size:18px}
.lead{font-size:clamp(17px,2vw,19px);color:var(--muted);max-width:680px}
.eyebrow{display:inline-block;font:700 12px/1 inherit;letter-spacing:.08em;text-transform:uppercase;color:var(--brand);background:#dbeafe;padding:7px 10px;border-radius:999px;margin-bottom:14px}
.grid{display:grid;gap:18px}.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.muted{color:var(--muted)}.small{font-size:14px}.center{text-align:center}
.check{list-style:none;padding:0;margin:12px 0 16px}.check li{padding-left:26px;position:relative;margin:7px 0;font-size:15px}
.check li:before{content:"";position:absolute;left:0;top:6px;width:14px;height:8px;border-left:2.5px solid var(--ok);border-bottom:2.5px solid var(--ok);transform:rotate(-45deg)}
.price{font-size:40px;font-weight:800;letter-spacing:-.02em}.price small{font-size:15px;color:var(--muted);font-weight:600}
.trust{display:flex;flex-wrap:wrap;gap:8px 18px;color:var(--muted);font-size:14px;font-weight:600;margin-top:14px}
.trust span{display:inline-flex;align-items:center;gap:6px}.trust svg{width:16px;height:16px;color:var(--ok);flex:none}
table{width:100%;border-collapse:collapse;font-size:15px}th,td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch}
details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;margin:10px 0}summary{font-weight:700;cursor:pointer}
pre.code{background:#0f172a;color:#e2e8f0;border-radius:12px;padding:14px 16px;overflow-x:auto;font:13px/1.5 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;white-space:pre-wrap;word-break:break-all;margin:8px 0}
.ctrl label{display:block;font-weight:700;font-size:13px;margin:14px 0 6px}
.ctrl input[type=text],.ctrl input[type=url],.ctrl select{width:100%;min-height:44px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit;background:#fff}
.ctrl input[type=color]{width:56px;height:44px;border:1px solid var(--line);border-radius:10px;padding:3px;background:#fff;vertical-align:middle}
.swatches{display:flex;gap:8px;flex-wrap:wrap;align-items:center}.swatches button{width:32px;height:32px;border-radius:50%;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);cursor:pointer}
.browser{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;box-shadow:0 10px 30px rgba(15,23,42,.08)}
.browser-bar{display:flex;align-items:center;gap:6px;padding:10px 12px;background:#f1f5f9;border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}
.browser-bar i{width:10px;height:10px;border-radius:50%;background:#cbd5e1;display:inline-block}
.browser-bar .url{margin-left:8px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 12px;flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-hdr{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.site-hdr .nm{font-weight:800;font-size:18px}.site-hdr .ph{font-size:13px;color:var(--muted)}
.notice{background:#eff6ff;border:1px solid #bfdbfe;border-radius:12px;padding:12px 14px;font-size:14px}
.okbox{background:#f0fdf4;border:1px solid #bbf7d0;border-radius:12px;padding:14px 16px}
.warnbox{background:#fffbeb;border:1px solid #fde68a;border-radius:12px;padding:14px 16px}
.steps{counter-reset:s;list-style:none;padding:0;margin:0}.steps li{counter-increment:s;position:relative;padding:0 0 16px 44px}
.steps li:before{content:counter(s);position:absolute;left:0;top:-2px;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px}
footer{background:var(--ink);color:#cbd5e1;padding:32px 0;font-size:14px}footer a{color:#e2e8f0}
@media(max-width:900px){.g3{grid-template-columns:1fr 1fr}.nav nav{display:none}}
@media(max-width:700px){.g2,.g3{grid-template-columns:1fr}section{padding:36px 0}}

/* tc-e31-a11y */.eyebrow{color:#1d4ed8}p a,li a,td a,.small a,.muted a,.trust a{text-decoration:underline;text-underline-offset:2px}.btn,.nav a{text-decoration:none}