:root{
    --bg: #FDF6E3;
    --panel: #FFFFFF;
    --text: #3C474D;
    --muted: #5C6A72;
    --faint: rgba(92,106,114,.06);
    --hair: #E7DFCC;
    --accent: #6C8F58;
    --accent2: #D6764E;
    --accent3: #D8605B;
    --shadow: 0 12px 40px rgba(60,71,77,.07);
    --topbar-bg: rgba(253,246,227,.85);
    --radius: 18px;
    --radius2: 14px;
    --max: 1100px;
    --pad: 18px;
    --pad2: 28px;
    --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
    --serif: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;

    --border: var(--hair, #E7DFCC);
    --link: var(--accent, #6C8F58);
    --card: var(--panel, #FFFFFF);
    /* Heatmap cell colors */
    --cell-green: #6C8F58;
    --cell-green-bg: rgba(108,143,88,.15);
    --cell-amber: #D6764E;
    --cell-amber-bg: rgba(214,118,78,.15);
    --cell-red: #D8605B;
    --cell-red-bg: rgba(216,96,91,.15);
}

@media (prefers-color-scheme: dark){
    :root{
        --bg: #2B3339;
        --panel: #323C41;
        --text: #D3C6AA;
        --muted: #A9B1A8;
        --faint: rgba(211,198,170,.06);
        --hair: #46535B;
        --accent: #A7C080;
        --accent2: #E69875;
        --accent3: #E67E80;
        --shadow: 0 12px 40px rgba(0,0,0,.3);
        --topbar-bg: rgba(43,51,57,.85);
        --border: var(--hair, #46535B);
        --link: var(--accent, #A7C080);
        --card: var(--panel, #323C41);
        /* Heatmap cell colors — dark mode */
        --cell-green: #A7C080;
        --cell-green-bg: rgba(167,192,128,.2);
        --cell-amber: #E69875;
        --cell-amber-bg: rgba(230,152,117,.2);
        --cell-red: #E67E80;
        --cell-red-bg: rgba(230,126,128,.2);
    }
}

*{ box-sizing: border-box; }
html,body{ height:100%; }

body{
    margin:0;
    font-family: var(--sans);
    background:
        radial-gradient(1200px 800px at 20% 0%, var(--faint), transparent 55%),
        radial-gradient(900px 600px at 80% 20%, var(--faint), transparent 60%),
        var(--bg);
    color: var(--text, #3C474D);
    line-height: 1.45;
    letter-spacing: .2px;
}

a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; text-underline-offset: 3px; }

.mono{ font-family: var(--mono); }

.container{
    max-width: var(--max, 1100px);
    margin: 0 auto;
    padding: 0 var(--pad, 18px) 80px;
}

.topbar{
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--topbar-bg, rgba(253,246,227,.85));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--hair, #E7DFCC);
}

.topbar-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding: 14px var(--pad, 18px);
    max-width: var(--max, 1100px);
    margin: 0 auto;
    gap: 16px;
}

.brand{
    display:flex;
    gap:10px;
    align-items: baseline;
    font-weight: 750;
    letter-spacing: .6px;
    text-transform: lowercase;
}

.brand small{
    font-weight: 500;
    opacity: .5;
    font-family: var(--mono);
    letter-spacing: .2px;
}

.nav-links{
    display:flex;
    gap:18px;
    align-items:center;
}

.nav-links a{
    opacity:.7;
    padding: 8px 12px;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 500;
    font-size: 14px;
}

.nav-links a:hover{
    opacity: 1;
    text-decoration:none;
    border-color: var(--hair, #E7DFCC);
    background: var(--faint, rgba(92,106,114,.06));
}

.hero{
    padding: 34px 0 8px;
    display: grid;
    gap: 16px;
}

.hero h1{
    margin:0 0 10px;
    font-size: clamp(32px, 5vw, 44px);
    font-weight: 800;
    text-transform: lowercase;
    letter-spacing: -1px;
}

.hero p{
    margin: 0;
    font-size: 16px;
    color: var(--muted, #5C6A72);
    max-width: 70ch;
}

.kicker{
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1.8px;
    color: var(--muted, #5C6A72);
}

.card{
    background: var(--panel, #FFFFFF);
    border: 1px solid var(--hair, #E7DFCC);
    border-radius: var(--radius2, 14px);
    padding: 18px;
    box-shadow: var(--shadow, 0 12px 40px rgba(60,71,77,.07));
}

.section{
    margin-top: 36px;
}

.section h2{
    margin:0 0 8px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--muted, #5C6A72);
}

.section p{
    margin:0 0 16px;
    color: var(--muted, #5C6A72);
}

.layer-strip{
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 20px 0 32px;
}

.layer-card{
    background: var(--panel, #FFFFFF);
    border: 1px solid var(--hair, #E7DFCC);
    border-radius: var(--radius2, 14px);
    padding: 16px;
    min-height: 110px;
}

.layer-card h3{
    margin: 0 0 8px;
    font-size: 18px;
    text-transform: none;
    letter-spacing: .2px;
}

.layer-card p{
    color: var(--muted, #5C6A72);
    font-size: 13px;
}

.badge{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--muted, #5C6A72);
    border: 1px solid var(--hair, #E7DFCC);
    background: var(--faint, rgba(92,106,114,.06));
}

.footer{
    margin-top: 48px;
    border-top: 1px solid var(--hair, #E7DFCC);
    padding-top: 24px;
    display: grid;
    gap: 16px;
}

.footer-grid{
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.footer h3{
    font-size: 16px;
    margin-bottom: 10px;
    text-transform: none;
    letter-spacing: .2px;
}

.footer ul{
    margin: 0;
    padding-left: 16px;
    color: var(--muted, #5C6A72);
    font-size: 13px;
}

@media (max-width: 980px){
    .layer-strip{ grid-template-columns: 1fr; }
    .footer-grid{ grid-template-columns: 1fr; }
    .topbar-inner{ flex-direction: column; align-items: flex-start; }
}