/* Threlmark.com — public site. Light "Roadmap Lab" aesthetic. */
:root{
  --ink:#f4f6f8;--surface:#fff;--soft:#eef2f7;--border:#d9dee7;--bb:#cfd6e1;
  --text:#16181d;--strong:#0b0d12;--muted:#667085;--faint:#98a2b3;
  --navy:#111827;--indigo:#4f46e5;--indigo2:#6366f1;--teal:#0f766e;--gold:#b45309;--green:#15803d;--rose:#be123c;
  --ui:"Inter",system-ui,-apple-system,sans-serif;--mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  --shadow:0 10px 26px rgba(15,23,42,.06);--shadow-lg:0 30px 70px rgba(15,23,42,.14);--r:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--ui);color:var(--text);line-height:1.6;
  background:radial-gradient(circle at 80% -6%,rgba(79,70,229,.13),transparent 34rem),linear-gradient(180deg,#fbfcff,var(--ink) 30rem);
  -webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}
a{color:var(--indigo);text-decoration:none}a:hover{text-decoration:underline}
h1,h2,h3{color:var(--strong);letter-spacing:-.02em;margin:0}
.container{width:min(1120px,calc(100% - 40px));margin:0 auto}
.muted{color:var(--muted)}

/* header */
.site-header{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);background:rgba(255,255,255,.72);border-bottom:1px solid var(--border)}
.site-header .container{display:flex;align-items:center;gap:18px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:900;font-size:19px;letter-spacing:-.03em;color:var(--strong)}
.logo:hover{text-decoration:none}
.logo svg{width:28px;height:28px;color:var(--indigo)}
.site-nav{display:flex;gap:6px;margin-left:auto;align-items:center}
.site-nav a{padding:8px 12px;border-radius:9px;color:var(--muted);font-weight:600;font-size:14px}
.site-nav a:hover{background:var(--soft);color:var(--text);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14px;padding:10px 16px;border-radius:11px;border:1px solid var(--bb);background:#fff;color:#2d3440;cursor:pointer;transition:.14s}
.btn:hover{background:#f8fafc;border-color:#b7c0ce;text-decoration:none}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.primary:hover{background:#2f3744;color:#fff}
.btn.indigo{background:var(--indigo);border-color:var(--indigo);color:#fff}
.btn.indigo:hover{background:var(--indigo2);color:#fff}

/* hero */
.hero{padding:72px 0 40px}
.kicker{font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--indigo);font-weight:800}
.hero h1{font-size:clamp(2.6rem,6vw,4.6rem);line-height:.98;font-weight:900;margin:14px 0 0;max-width:16ch}
.hero p.lede{font-size:1.22rem;color:var(--muted);max-width:60ch;margin:20px 0 28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}
.hero-note{margin-top:16px;font-size:13px;color:var(--faint)}

/* mockup */
.mockup{margin-top:46px;border-radius:20px;border:1px solid var(--border);background:#fff;box-shadow:var(--shadow-lg);overflow:hidden}
.mockup-bar{display:flex;align-items:center;gap:7px;padding:11px 14px;border-bottom:1px solid var(--border);background:#fbfcfe}
.mockup-bar i{width:11px;height:11px;border-radius:50%;display:inline-block}
.mockup-bar .u{margin-left:12px;font-family:var(--mono);font-size:12px;color:var(--faint)}
.mock-lanes{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;padding:18px}
.mock-lane-title{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:#475467;margin-bottom:10px;display:flex;align-items:center;gap:7px}
.mock-dot{width:8px;height:8px;border-radius:50%}
.mock-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:11px;box-shadow:var(--shadow);margin-bottom:10px;border-left:3px solid var(--c,#cfd6e1)}
.mock-card .t{font-weight:800;font-size:13.5px;color:var(--strong)}
.mock-card .m{display:flex;gap:5px;margin-top:8px;align-items:center}
.tag{font-size:10px;font-weight:750;padding:2px 7px;border-radius:999px;background:#f1f5f9;color:#475467;border:1px solid #e2e8f0}
.prio{margin-left:auto;font-family:var(--mono);font-weight:900;background:var(--navy);color:#fff;border-radius:8px;min-width:30px;height:30px;display:grid;place-items:center;font-size:13px}

/* sections */
section.block{padding:54px 0}
.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--indigo);font-weight:800;text-align:center}
.block h2{font-size:clamp(1.8rem,3.4vw,2.6rem);font-weight:900;text-align:center;margin:10px 0 8px}
.block .sub{text-align:center;color:var(--muted);max-width:60ch;margin:0 auto 36px;font-size:1.05rem}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature{background:rgba(255,255,255,.92);border:1px solid var(--border);border-radius:var(--r);padding:22px;box-shadow:var(--shadow)}
.feature .ic{width:42px;height:42px;border-radius:11px;display:grid;place-items:center;background:#eef2ff;color:var(--indigo);margin-bottom:14px}
.feature h3{font-size:1.08rem;font-weight:800;margin-bottom:6px}
.feature p{margin:0;color:var(--muted);font-size:14.5px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;counter-reset:s}
.step{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:22px;width:30px;height:30px;border-radius:9px;background:var(--indigo);color:#fff;display:grid;place-items:center;font-weight:900;font-size:14px}
.step h3{font-size:1.05rem;margin:8px 0 6px}
.step p{margin:0;color:var(--muted);font-size:14px}
.band{background:var(--navy);border-radius:24px;padding:48px;text-align:center;color:#fff;box-shadow:var(--shadow-lg)}
.band h2{color:#fff;font-size:clamp(1.6rem,3vw,2.3rem)}
.band p{color:#c7cfdd;max-width:54ch;margin:12px auto 24px}

/* legal / content pages */
.page{padding:54px 0 30px;flex:1}
.page h1{font-size:clamp(2rem,4vw,3rem);font-weight:900}
.page .updated{color:var(--faint);font-size:13px;margin-top:8px;font-family:var(--mono)}
.prose{max-width:74ch;margin-top:26px}
.prose h2{font-size:1.35rem;font-weight:800;margin:34px 0 10px}
.prose h3{font-size:1.08rem;font-weight:800;margin:22px 0 8px}
.prose p,.prose li{color:#33384a}
.prose ul{padding-left:22px}.prose li{margin:6px 0}
.prose a{font-weight:600}
.card{background:rgba(255,255,255,.92);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:22px}
.addr{font-style:normal;line-height:1.8;font-size:15px}
code{font-family:var(--mono);font-size:.88em;background:var(--soft);padding:1px 6px;border-radius:6px;color:#3b3f95}

/* manual / language switcher */
.langbar{position:sticky;top:64px;z-index:10;display:flex;gap:8px;flex-wrap:wrap;padding:12px 0;margin:8px 0 8px;background:linear-gradient(180deg,rgba(244,246,248,.96),rgba(244,246,248,.7));backdrop-filter:blur(8px)}
.langbtn{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:13.5px;padding:8px 14px;border-radius:999px;border:1px solid var(--bb);background:#fff;color:#475467;cursor:pointer;transition:.14s}
.langbtn:hover{background:#f8fafc;border-color:#b7c0ce}
.langbtn.active{background:var(--navy);border-color:var(--navy);color:#fff}
.lang-section{display:none}
.lang-section.active{display:block}
.manual h2{font-size:1.4rem;font-weight:800;margin:38px 0 10px;padding-top:16px;border-top:1px solid var(--border)}
.manual h3{font-size:1.08rem;font-weight:800;margin:22px 0 6px}
.manual p,.manual li{color:#33384a;max-width:74ch}
.manual ul,.manual ol{padding-left:22px}.manual li{margin:6px 0}
.manual pre{font-family:var(--mono);font-size:12.5px;line-height:1.55;background:#0f172a;color:#e2e8f0;border-radius:12px;padding:14px 16px;overflow:auto;max-width:74ch}
.manual pre .c{color:#94a3b8}
.callout{border-left:3px solid var(--indigo);background:#f5f3ff;border-radius:0 10px 10px 0;padding:12px 16px;margin:16px 0;color:#3730a3;max-width:74ch}
.lane-legend{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
kbd{font-family:var(--mono);font-size:12px;background:#fff;border:1px solid var(--bb);border-bottom-width:2px;border-radius:6px;padding:1px 7px;color:#33384a}

/* footer */
.site-footer{border-top:1px solid var(--border);background:rgba(255,255,255,.6);margin-top:auto}
.site-footer .container{display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;padding:22px 0;font-size:13.5px;color:var(--muted)}
.site-footer nav{display:flex;gap:16px;flex-wrap:wrap}
.site-footer nav a{color:var(--muted);font-weight:600}
.site-footer .copy a{font-weight:700;color:var(--indigo)}

@media(max-width:860px){
  .features,.steps{grid-template-columns:1fr}
  .mock-lanes{grid-template-columns:1fr 1fr}
  .site-nav a:not(.btn){display:none}
}
@media(max-width:560px){.mock-lanes{grid-template-columns:1fr}}