/* TradeLOG website. Layout: centered 1120px column; landing sections stack; policy pages use a 68ch reading column. */
:root{
  --bg:#f3f5f8; --surface:#ffffff; --surface-2:#eaeef4; --line:#d6dce6;
  --fg:#16202e; --muted:#5b6778; --accent:#2f5bd3; --accent-ink:#1f3f9a; --accent-soft:#e3eafb;
  --gain:#137a52; --gain-soft:#dcf2e8; --loss:#c23a32; --loss-soft:#fbe3e1; --warn:#a86a06; --warn-soft:#fbefd7;
  --f-display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --f-body:"Figtree","Segoe UI",system-ui,sans-serif;
  --f-num:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f141c; --surface:#171e29; --surface-2:#1f2835; --line:#2c3746;
  --fg:#e6ebf2; --muted:#93a0b2; --accent:#7d9dff; --accent-ink:#a9bdff; --accent-soft:#1f2b4a;
  --gain:#4fd19a; --gain-soft:#143426; --loss:#ff7b72; --loss-soft:#3a1c1b; --warn:#f0b54a; --warn-soft:#3a2c12; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f141c; --surface:#171e29; --surface-2:#1f2835; --line:#2c3746;
  --fg:#e6ebf2; --muted:#93a0b2; --accent:#7d9dff; --accent-ink:#a9bdff; --accent-soft:#1f2b4a;
  --gain:#4fd19a; --gain-soft:#143426; --loss:#ff7b72; --loss-soft:#3a1c1b; --warn:#f0b54a; --warn-soft:#3a2c12; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--f-body);font-size:16px;line-height:1.6}
img,svg{max-width:100%}
a{color:var(--accent)} a:hover{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding-inline:20px}
.num{font-family:var(--f-num);font-variant-numeric:tabular-nums}
.skip{position:absolute;left:-999px;top:8px;background:var(--surface);padding:8px 12px;border-radius:8px;z-index:50}
.skip:focus{left:12px}

/* header */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-block:12px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg)}
.brand .mark{width:34px;height:34px;border-radius:8px;background:var(--accent);display:grid;place-items:center;flex:none}
.brand b{font-family:var(--f-display);font-size:22px;letter-spacing:-.01em}
.brand b span:first-child{font-weight:500} .brand b span:last-child{font-weight:800;color:var(--accent)}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:var(--fg);text-decoration:none;font-weight:600;font-size:15px}
.nav a:hover{color:var(--accent)}
@media (max-width:760px){ .nav a:not(.btn){display:none} }

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;padding:11px 18px;font-weight:700;font-size:15px;text-decoration:none;border:1px solid var(--line);background:var(--surface);color:var(--fg);cursor:pointer;min-height:44px}
.btn:hover{border-color:var(--accent);color:var(--fg)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover{background:var(--accent-ink);border-color:var(--accent-ink);color:#fff}
:root[data-theme="dark"] .btn.primary,:root[data-theme="dark"] .btn.primary:hover{color:#0f141c}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .btn.primary,:root:not([data-theme="light"]) .btn.primary:hover{color:#0f141c}}

/* sections */
section{padding-block:72px}
.eyebrow{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin:0 0 10px}
h1,h2,h3{font-family:var(--f-display);letter-spacing:-.02em;text-wrap:balance;margin:0}
h1{font-size:clamp(36px,5.6vw,60px);line-height:1.04;font-weight:800}
h2{font-size:clamp(28px,3.6vw,40px);line-height:1.1;font-weight:700}
h3{font-size:19px;line-height:1.25;font-weight:700}
.lead{font-size:clamp(17px,1.6vw,19px);color:var(--muted);max-width:56ch;margin:18px 0 0}
.sec-intro{max-width:640px;margin-bottom:36px}
.sec-intro p{color:var(--muted);margin:12px 0 0}

/* hero */
.hero{padding-block:56px 64px}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:48px;align-items:center}
.hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero .meta{margin-top:16px;font-size:14px;color:var(--muted)}
@media (max-width:900px){ .hero .wrap{grid-template-columns:minmax(0,1fr)} }

/* product preview in hero (HTML mock, sample data) */
.mock{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;display:grid;gap:14px;box-shadow:0 24px 60px -30px rgba(22,32,46,.35);min-width:0}
.mock-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.mock-top .acct{font-size:13px;color:var(--muted)} .mock-top .acct b{color:var(--fg)}
.tag-sample{font-size:11px;letter-spacing:.07em;text-transform:uppercase;font-weight:700;background:var(--warn-soft);color:var(--warn);border-radius:99px;padding:3px 9px}
.mock-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.mock-stats div{background:var(--surface-2);border-radius:10px;padding:8px 10px;min-width:0}
.mock-stats small{display:block;font-size:11.5px;color:var(--muted)}
.mock-stats b{font-family:var(--f-num);font-size:17px}
.mock-cal{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px}
.mock-cal span{border-radius:6px;height:34px;font-family:var(--f-num);font-size:10.5px;font-weight:600;display:flex;align-items:flex-end;padding:3px 5px;overflow:hidden;white-space:nowrap}
.mock-cal .w{background:var(--gain-soft);color:var(--gain)} .mock-cal .l{background:var(--loss-soft);color:var(--loss)} .mock-cal .o{background:var(--surface-2)}
.mock-rule{display:grid;gap:5px}
.mock-rule .row{display:flex;justify-content:space-between;font-size:13px;font-weight:600}
.bar{height:8px;border-radius:99px;background:var(--surface-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:99px}
.mock-insight{background:var(--accent-soft);border-radius:10px;padding:10px 12px;font-size:13.5px}
.mock-insight b{display:block;font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}

/* audience strip */
.strip{padding-block:22px;border-block:1px solid var(--line);background:var(--surface)}
.strip .wrap{display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;align-items:center;font-size:15px}
.strip .langs{display:flex;flex-wrap:wrap;gap:6px}
.strip .langs span{border:1px solid var(--line);border-radius:99px;padding:3px 11px;font-size:14px}

/* features */
.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.feature{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;display:grid;gap:8px;align-content:start;min-width:0}
.feature .ic{width:40px;height:40px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-bottom:4px}
.feature p{margin:0;color:var(--muted);font-size:15px}
@media (max-width:900px){ .features{grid-template-columns:repeat(2,minmax(0,1fr))} }
@media (max-width:600px){ .features{grid-template-columns:minmax(0,1fr)} }

/* steps */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;list-style:none;padding:0;margin:0;counter-reset:s}
.steps li{border-top:3px solid var(--accent);padding-top:16px;display:grid;gap:6px;align-content:start}
.steps li::before{counter-increment:s;content:"Step " counter(s);font-family:var(--f-num);font-size:13px;color:var(--accent);font-weight:600}
.steps p{margin:0;color:var(--muted)}
@media (max-width:760px){ .steps{grid-template-columns:minmax(0,1fr)} }

/* tools */
.tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;display:grid;gap:12px;min-width:0}
.tool p{margin:0;color:var(--muted)}
.tool-vis{background:var(--surface-2);border-radius:10px;padding:14px;font-size:13px}
.calc-row{display:flex;justify-content:space-between;gap:10px;padding-block:3px}
.calc-row b{font-family:var(--f-num)}
.sess{display:grid;grid-template-columns:72px minmax(0,1fr);gap:6px 10px;align-items:center}
.sess span{font-size:12.5px;font-weight:600}
.sess .trk{position:relative;height:12px;border-radius:99px;background:var(--surface)}
.sess .trk i{position:absolute;top:0;bottom:0;border-radius:99px}
@media (max-width:760px){ .tools{grid-template-columns:minmax(0,1fr)} }

/* security */
.secure{background:var(--surface);border-block:1px solid var(--line)}
.secure .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:40px;align-items:start}
.checks{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.checks li{display:grid;grid-template-columns:28px minmax(0,1fr);gap:10px}
.checks li svg{color:var(--gain);margin-top:3px}
.checks b{display:block}
.checks span{color:var(--muted);font-size:15px}
@media (max-width:860px){ .secure .wrap{grid-template-columns:minmax(0,1fr)} }

/* pricing */
.price-card{max-width:460px;margin:0 auto;background:var(--surface);border:2px solid var(--accent);border-radius:18px;padding:30px;display:grid;gap:18px}
.price-card .amt{display:flex;align-items:baseline;gap:8px}
.price-card .amt b{font-family:var(--f-num);font-size:52px;line-height:1;font-weight:600}
.price-card .amt span{color:var(--muted)}
.price-card ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.price-card li{display:grid;grid-template-columns:22px minmax(0,1fr);gap:8px}
.price-card li svg{color:var(--gain);margin-top:4px}
.price-card .fine{font-size:13px;color:var(--muted);margin:0;text-align:center}

/* faq */
.faq{max-width:760px;display:grid;gap:10px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 18px}
.faq summary{cursor:pointer;font-weight:700;padding-block:16px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-num);color:var(--accent);font-size:20px;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:0 0 16px;color:var(--muted)}

/* final cta */
.final{text-align:center}
.final .lead{margin-inline:auto}
.final .ctas{display:flex;justify-content:center;gap:12px;margin-top:26px;flex-wrap:wrap}

/* footer */
.site-foot{border-top:1px solid var(--line);padding-block:40px 32px;font-size:14px;color:var(--muted)}
.site-foot .top{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;align-items:flex-start}
.site-foot nav{display:flex;flex-wrap:wrap;gap:8px 20px}
.site-foot nav a{color:var(--fg);text-decoration:none;font-weight:600}
.site-foot nav a:hover{color:var(--accent)}
.site-foot .legal{margin-top:24px;display:grid;gap:8px;max-width:820px;font-size:13px;line-height:1.55}
.site-foot .legal p{margin:0}

/* policy pages */
.doc{max-width:720px;margin:0 auto;padding-block:48px 72px}
.doc h1{font-size:clamp(32px,4.6vw,44px)}
.doc .updated{color:var(--muted);margin:10px 0 28px;font-size:14px}
.doc h2{font-size:22px;margin:34px 0 8px}
.doc p,.doc li{max-width:68ch}
.doc ul{padding-left:22px}
.doc li{margin-bottom:6px}
.doc .note{background:var(--accent-soft);border-radius:10px;padding:14px 16px;margin:20px 0}
.fill{background:var(--warn-soft);color:var(--warn);border-radius:4px;padding:0 4px;font-weight:600}
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;display:grid;gap:14px;margin-top:20px}
.contact-card .row{display:grid;grid-template-columns:150px minmax(0,1fr);gap:10px;align-items:baseline}
.contact-card .row span{color:var(--muted);font-size:14px}
.copy{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
@media (max-width:520px){ .contact-card .row{grid-template-columns:minmax(0,1fr);gap:2px} }