:root {
    --bg: #f7f6f3;
    --panel: #ffffff;
    --text: #1a1a24;
    --muted: #5a6275;
    --line: rgba(0, 0, 0, .09);
    --accent: #2a7a6e;
    --accent2: #1d6a5e;
    --focus: #2a7a6e;
    --shadow: 0 4px 24px rgba(0, 0, 0, .08);
    --radius: 18px;
    --max: 1100px;
}

/* Dark theme — set <html data-theme="dark"> to restore */
:root[data-theme="dark"] {
    --bg: #0b0f19;
    --panel: #111827;
    --text: #e8edf7;
    --muted: #bcc6da;
    --line: rgba(255, 255, 255, .14);
    --accent: #7bb2ff;
    --accent2: #6dcfaa;
    --focus: #a3c8ff;
    --shadow: 0 18px 60px rgba(0, 0, 0, .45);
}

:root[data-theme="graphite"] {
    --bg: #0f1115;
    --panel: #161b22;
    --text: #e6ebf3;
    --muted: #b5bfce;
    --line: rgba(255, 255, 255, .16);
    --accent: #8ab4ff;
    --accent2: #85e0d2;
    --focus: #b7d0ff;
}

:root[data-theme="deep-sea"] {
    --bg: #08131a;
    --panel: #0c1c26;
    --text: #e6f3f8;
    --muted: #b3cad5;
    --line: rgba(255, 255, 255, .15);
    --accent: #6ec5ff;
    --accent2: #7df1d7;
    --focus: #97d8ff;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
    background: radial-gradient(1000px 500px at 15% 0%, rgba(42, 122, 110, .05), transparent 55%),
        radial-gradient(800px 400px at 85% 10%, rgba(29, 96, 112, .03), transparent 50%),
        var(--bg);
    color: var(--text);
    line-height: 1.45;
}

a {
    color: inherit;
    text-decoration: none;
}

code {
    background: rgba(0, 0, 0, .04);
    padding: 0.15rem 0.35rem;
    border-radius: 8px;
    border: 1px solid var(--line);
}

.container {
    width: min(var(--max), calc(100% - 40px));
    margin: 0 auto;
}

.skip {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.skip:focus {
    left: 20px;
    top: 20px;
    width: auto;
    height: auto;
    padding: 10px 12px;
    background: #ffffff;
    border: 1px solid var(--line);
    border-radius: 10px;
    z-index: 999;
}

.header {
    border-bottom: 1px solid var(--line);
    background: linear-gradient(to bottom, rgba(247, 246, 243, .90), rgba(247, 246, 243, .20));
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 0;
}

.brand {
    display: inline-flex;
    width: auto;
    height: 44px;
    padding: 0 10px 0 6px;
    gap: 8px;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, .03);
    font-weight: 700;
    letter-spacing: .5px;
}

.brand img {
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 9px;
}


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

.navlinks a {
    color: var(--muted);
    font-weight: 500;
}

.navlinks a:hover {
    color: var(--text);
}

.hamburger {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, .03);
    cursor: pointer;
}

.hamburger span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    margin: 4px auto;
    opacity: .85;
}

.hero {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: 26px;
    padding: 34px 0 44px;
    align-items: start;
}

.kicker {
    margin: 0 0 10px;
    color: var(--accent2);
    font-weight: 600;
    letter-spacing: .2px;
}

h1 {
    margin: 0 0 14px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(32px, 3.4vw, 52px);
    font-weight: 300;
    line-height: 1.08;
    letter-spacing: -0.01em;
}

.sub {
    margin: 0 0 18px;
    color: var(--muted);
    font-size: 1.05rem;
}

.cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 14px 0 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 14px;
    border: 1px solid rgba(42, 122, 110, .45);
    background: rgba(42, 122, 110, .10);
    color: var(--text);
    font-weight: 600;
    transition: background-color .15s ease, border-color .15s ease, filter .15s ease;
}

.btn:hover {
    border-color: rgba(42, 122, 110, .65);
    background: rgba(42, 122, 110, .16);
    filter: brightness(0.97);
}

.btn-ghost {
    border-color: var(--line);
    background: rgba(0, 0, 0, .03);
}

.btn-ghost:hover {
    background: rgba(0, 0, 0, .06);
    border-color: rgba(0, 0, 0, .16);
}

.btn-small {
    padding: 10px 12px;
    border-radius: 12px;
}

.btn-wide {
    width: 100%;
}

.meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.pill {
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, .03);
    color: var(--muted);
    padding: 8px 10px;
    border-radius: 999px;
    font-size: .92rem;
}

.hero-card .card {
    padding: 18px;
    box-shadow: var(--shadow);
}

.card {
    border: 1px solid var(--line);
    background: var(--panel);
    border-radius: var(--radius);
    padding: 18px;
}

.card-title {
    font-weight: 700;
    margin-bottom: 10px;
}

.card-actions {
    margin-top: 10px;
    color: var(--muted);
}

.link {
    color: var(--accent);
    font-weight: 600;
}

.link:hover {
    color: #1f5c54;
    text-decoration: underline;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.hamburger:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(240, 238, 232, .80);
}

.dot {
    margin: 0 8px;
    color: rgba(0, 0, 0, .25);
}

.note {
    margin: 12px 0;
    color: var(--muted);
    font-size: .92rem;
}

.section {
    padding: 56px 0;
}

.section.alt {
    background: linear-gradient(to bottom, rgba(0, 0, 0, .02), rgba(0, 0, 0, .00));
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

h2 {
    margin: 0 0 10px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: 1.9rem;
    font-weight: 400;
    letter-spacing: -0.01em;
}

.lead {
    margin: 0 0 18px;
    color: var(--muted);
    max-width: 70ch;
}

.grid3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

.grid2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.list {
    margin: 10px 0 0;
    padding-left: 18px;
    color: var(--muted);
}

.list li {
    margin: 8px 0;
}

.small {
    font-size: .92rem;
}

.muted {
    color: var(--muted);
}

.callout {
    margin-top: 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, .02);
    padding: 14px;
    border-radius: var(--radius);
}

.callout-title {
    font-weight: 700;
    margin-bottom: 6px;
}

.callout-body {
    color: var(--muted);
}

.timeline {
    display: grid;
    gap: 14px;
    margin-top: 14px;
}

.titem {
    display: grid;
    grid-template-columns: 18px 1fr;
    gap: 12px;
    align-items: start;
}

.tmarker {
    width: 12px;
    height: 12px;
    margin-top: 6px;
    border-radius: 50%;
    background: rgba(42, 122, 110, .40);
    border: 1px solid rgba(42, 122, 110, .60);
}

h3 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 400;
    margin: 0 0 8px;
    letter-spacing: -0.01em;
}

.trole {
    font-weight: 700;
}

.tdesc {
    color: var(--muted);
    margin-top: 6px;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.tag {
    border: 1px solid var(--line);
    background: rgba(0, 0, 0, .03);
    color: var(--muted);
    padding: 8px 10px;
    border-radius: 999px;
    font-size: .92rem;
}

.footer {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
}

.footer-logo {
    width: 44px;
    height: auto;
    opacity: 0.75;
}

@media (max-width: 900px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .grid3 {
        grid-template-columns: 1fr;
    }

    .grid2 {
        grid-template-columns: 1fr;
    }

    .navlinks {
        display: none;
    }

    .hamburger {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .nav.open .navlinks {
        display: flex;
        position: absolute;
        right: 20px;
        top: 70px;
        flex-direction: column;
        gap: 12px;
        padding: 14px;
        border-radius: 16px;
        border: 1px solid var(--line);
        background: rgba(247, 246, 243, .97);
        box-shadow: var(--shadow);
    }
}
