:root {
    --dusk: #2b3a4a;
    --dusk-deep: #1e2b37;
    --ivory: #f3efe4;
    --paper: #fffdf7;
    --ember: #dd8b3e;
    --ember-dark: #b96524;
    --pine: #2f5d50;
    --fog: #b8c2cc;
    --ink: #18242f;
    --muted: #66727d;
    --line: rgba(43, 58, 74, 0.17);
    --shadow: 0 28px 70px rgba(18, 30, 40, 0.2);
    --radius-sm: 0.65rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --container: 72rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--dusk);
    color: var(--ink);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 1rem;
    line-height: 1.65;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
.container { width: min(calc(100% - 2.5rem), var(--container)); margin-inline: auto; }
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.skip-link {
    position: fixed;
    z-index: 100;
    top: 1rem;
    left: 1rem;
    padding: 0.7rem 1rem;
    background: var(--ivory);
    color: var(--ink);
    border-radius: var(--radius-sm);
    transform: translateY(-180%);
}
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--ember); outline-offset: 4px; }

.site-header {
    position: relative;
    z-index: 20;
    border-bottom: 1px solid rgba(243, 239, 228, 0.16);
    background: rgba(43, 58, 74, 0.95);
}
.header-inner {
    min-height: 5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--ivory);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
}
.brand-mark {
    position: relative;
    width: 2rem;
    height: 2rem;
    display: inline-block;
    border: 1px solid rgba(243, 239, 228, 0.45);
    border-radius: 50%;
}
.brand-mark span:first-child {
    position: absolute;
    inset: 0.4rem;
    background: var(--ember);
    border-radius: 50%;
}
.brand-mark span:last-child {
    position: absolute;
    width: 0.7rem;
    height: 0.7rem;
    right: 0.18rem;
    bottom: 0.18rem;
    background: var(--dusk);
    border-radius: 50%;
}
.primary-navigation {
    display: flex;
    align-items: center;
    gap: 1.7rem;
    color: var(--fog);
    font-size: 0.9rem;
}
.primary-navigation a { text-decoration: none; }
.primary-navigation a:hover { color: var(--ivory); }
.nav-status {
    padding: 0.55rem 0.85rem;
    border: 1px solid rgba(243, 239, 228, 0.2);
    border-radius: 999px;
    color: var(--ivory);
}
.menu-button {
    display: none;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid rgba(243, 239, 228, 0.22);
    border-radius: var(--radius-sm);
    background: transparent;
}
.menu-button > span:not(.sr-only) {
    display: block;
    width: 1.2rem;
    height: 1px;
    margin: 0.33rem auto;
    background: var(--ivory);
}

.hero { position: relative; overflow: hidden; color: var(--ivory); }
.hero::before, .hero::after {
    content: "";
    position: absolute;
    pointer-events: none;
    border: 1px solid rgba(184, 194, 204, 0.11);
    border-radius: 50%;
}
.hero::before {
    width: 40rem;
    height: 20rem;
    top: 5rem;
    right: -13rem;
    transform: rotate(-18deg);
}
.hero::after {
    width: 52rem;
    height: 26rem;
    right: -17rem;
    bottom: -14rem;
    transform: rotate(8deg);
}
.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(25rem, 0.75fr);
    align-items: center;
    gap: clamp(3rem, 7vw, 7rem);
    min-height: calc(100vh - 5rem);
    padding-block: 5rem;
}
.eyebrow, .section-index, .console-kicker {
    margin: 0 0 1.2rem;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.eyebrow { display: flex; align-items: center; gap: 0.65rem; color: var(--fog); }
.eyebrow span { width: 2.4rem; height: 1px; background: var(--ember); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: Fraunces, Georgia, serif; }
h1 {
    max-width: 12ch;
    margin-bottom: 1.5rem;
    font-size: clamp(3.3rem, 7vw, 6.5rem);
    line-height: 0.95;
    letter-spacing: -0.055em;
}
.hero-lede {
    max-width: 37rem;
    margin-bottom: 2rem;
    color: #dce2e6;
    font-size: clamp(1.05rem, 1.5vw, 1.2rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.button {
    min-height: 3.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.2rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    text-decoration: none;
    transition: transform 160ms ease, background 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--ember); color: #24170d; }
.button-primary:hover { background: #ed9a4d; }
.button-secondary { border: 1px solid rgba(243, 239, 228, 0.25); color: var(--ivory); }
.button-secondary:hover { background: rgba(243, 239, 228, 0.08); }
.release-note {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    margin: 2.25rem 0 0;
    color: var(--fog);
    font-size: 0.84rem;
}
.release-note span {
    padding: 0.16rem 0.45rem;
    border-radius: 0.3rem;
    background: var(--pine);
    color: #eff8f4;
    font-weight: 700;
}

.weather-console {
    position: relative;
    padding: clamp(1.1rem, 3vw, 1.55rem);
    border: 1px solid rgba(243, 239, 228, 0.2);
    border-radius: var(--radius-lg);
    background: rgba(24, 36, 47, 0.68);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}
.weather-console::before {
    content: "";
    position: absolute;
    width: 0.75rem;
    height: 0.75rem;
    top: -0.35rem;
    right: 4.5rem;
    border-radius: 50%;
    background: var(--ember);
    box-shadow: 0 0 0 0.35rem rgba(221, 139, 62, 0.14);
}
.console-heading, .reading-topline, .temperature-row, .compact-reading, .plan-card-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.console-heading { align-items: flex-start; margin-bottom: 1rem; }
.console-kicker { margin-bottom: 0.2rem; color: var(--fog); font-size: 0.65rem; }
.console-heading h2 { margin: 0; font-size: 1.5rem; }
.demo-label, .condition-chip {
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    font-size: 0.68rem;
    white-space: nowrap;
}
.demo-label { border: 1px solid rgba(243, 239, 228, 0.17); color: var(--fog); }
.weather-reading {
    padding: 1.35rem;
    border-radius: var(--radius-md);
    background: var(--ivory);
    color: var(--ink);
}
.reading-city { margin-bottom: 0.12rem; font-weight: 700; }
.reading-meta { margin-bottom: 0; color: var(--muted); font-size: 0.78rem; }
.condition-chip { background: rgba(221, 139, 62, 0.16); color: var(--ember-dark); font-weight: 700; }
.temperature-row { margin: 1.4rem 0; }
.temperature-row > strong {
    font-family: Fraunces, Georgia, serif;
    font-size: 4.5rem;
    line-height: 1;
    letter-spacing: -0.06em;
}
.weather-glyph {
    position: relative;
    width: 4rem;
    height: 4rem;
    border: 1px solid rgba(43, 58, 74, 0.17);
    border-radius: 50%;
}
.weather-glyph::before, .weather-glyph::after, .weather-glyph span {
    content: "";
    position: absolute;
    border-radius: 50%;
}
.weather-glyph::before {
    width: 1.6rem;
    height: 1.6rem;
    top: 0.62rem;
    right: 0.58rem;
    background: var(--ember);
}
.weather-glyph::after {
    width: 2rem;
    height: 1rem;
    left: 0.55rem;
    bottom: 0.7rem;
    border-radius: 1rem;
    background: var(--dusk);
}
.weather-glyph span {
    width: 1.2rem;
    height: 1.2rem;
    left: 1rem;
    bottom: 0.78rem;
    background: var(--dusk);
}
.reading-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.7rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
    font-size: 0.82rem;
    font-weight: 700;
}
.reading-stats small { display: block; color: var(--muted); font-size: 0.68rem; font-weight: 500; }
.compact-readings { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0.75rem; margin-top: 0.75rem; }
.compact-reading {
    padding: 1rem;
    border: 1px solid rgba(243, 239, 228, 0.14);
    border-radius: var(--radius-md);
    background: rgba(243, 239, 228, 0.06);
}
.compact-reading strong { font-family: Fraunces, Georgia, serif; font-size: 1.75rem; }
.compact-reading .reading-meta { color: var(--fog); }

.section { padding-block: clamp(5rem, 10vw, 8.5rem); }
.section-light { background: var(--ivory); }
.section-heading { max-width: 48rem; margin-bottom: 3rem; }
.section-index { color: var(--pine); }
.section-heading h2, .architecture-grid h2 {
    margin-bottom: 1rem;
    font-size: clamp(2.3rem, 4vw, 4rem);
    line-height: 1.03;
    letter-spacing: -0.045em;
}
.section-heading > p:last-child { max-width: 39rem; color: var(--muted); font-size: 1.05rem; }
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 0;
    padding: 0;
    list-style: none;
}
.steps-grid li {
    min-height: 18rem;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    background: var(--paper);
}
.step-number {
    width: 2.8rem;
    height: 2.8rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--dusk);
    color: var(--ivory);
    font-size: 0.72rem;
    font-weight: 700;
}
.steps-grid h3 { margin: auto 0 0.7rem; font-size: 1.55rem; }
.steps-grid p { margin-bottom: 0; color: var(--muted); font-size: 0.92rem; }

.architecture-section { background: var(--pine); color: var(--ivory); }
.architecture-grid {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: clamp(3rem, 8vw, 8rem);
}
.section-index-dark { color: #b9d2c9; }
.architecture-list { border-top: 1px solid rgba(243, 239, 228, 0.24); }
.architecture-list > div {
    display: grid;
    grid-template-columns: 8rem 1fr;
    gap: 1rem;
    padding: 1.2rem 0;
    border-bottom: 1px solid rgba(243, 239, 228, 0.24);
}
.architecture-list span { color: #b9d2c9; font-size: 0.8rem; }
.architecture-list strong { font-size: 0.95rem; }

.plan-grid {
    display: grid;
    grid-template-columns: 1fr minmax(19rem, 0.75fr);
    align-items: center;
    gap: clamp(3rem, 8vw, 8rem);
}
.plan-grid .section-heading { margin-bottom: 0; }
.plan-card {
    padding: 1.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: var(--paper);
    box-shadow: 0 20px 50px rgba(43, 58, 74, 0.1);
}
.plan-card-heading { align-items: flex-start; padding-bottom: 1.25rem; border-bottom: 1px solid var(--line); }
.plan-card-heading p { margin-bottom: 0.15rem; color: var(--muted); font-size: 0.78rem; }
.plan-card-heading h3 { margin-bottom: 0; font-size: 2rem; }
.plan-card-heading > strong { color: var(--pine); font-size: 1.15rem; }
.plan-card ul { display: grid; gap: 0.8rem; margin: 1.4rem 0; padding: 0; list-style: none; }
.plan-card li { position: relative; padding-left: 1.6rem; }
.plan-card li::before {
    content: "";
    position: absolute;
    width: 0.55rem;
    height: 0.55rem;
    left: 0;
    top: 0.55rem;
    border-radius: 50%;
    background: var(--ember);
}
.plan-status {
    margin-bottom: 0;
    padding: 0.8rem;
    border-radius: var(--radius-sm);
    background: rgba(47, 93, 80, 0.09);
    color: var(--pine);
    font-size: 0.8rem;
    font-weight: 700;
}

.site-footer { color: var(--fog); }
.footer-inner {
    min-height: 8rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}
.footer-inner p { margin: 0; font-size: 0.82rem; }
.brand-footer { font-size: 0.9rem; }
.brand-footer .brand-mark { transform: scale(0.82); }

@media (max-width: 900px) {
    .hero-grid, .architecture-grid, .plan-grid { grid-template-columns: 1fr; }
    .hero-grid { min-height: auto; padding-block: 4rem; }
    .hero-copy { max-width: 44rem; }
    .weather-console { max-width: 38rem; }
    .steps-grid { grid-template-columns: 1fr; }
    .steps-grid li { min-height: 13rem; }
    .plan-card { max-width: 35rem; }
}

@media (max-width: 680px) {
    .container { width: min(calc(100% - 1.5rem), var(--container)); }
    .menu-button { display: block; }
    .primary-navigation {
        position: absolute;
        top: calc(100% + 0.5rem);
        right: 0.75rem;
        left: 0.75rem;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0;
        padding: 0.65rem;
        border: 1px solid rgba(243, 239, 228, 0.18);
        border-radius: var(--radius-md);
        background: var(--dusk-deep);
        box-shadow: var(--shadow);
    }
    .primary-navigation.is-open { display: flex; }
    .primary-navigation a, .nav-status { padding: 0.8rem; }
    .nav-status { border: 0; border-radius: 0; color: var(--fog); }
    h1 { font-size: clamp(3rem, 15vw, 4.6rem); }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .release-note { align-items: flex-start; }
    .console-heading { align-items: flex-start; flex-direction: column; }
    .compact-readings { grid-template-columns: 1fr; }
    .reading-stats { gap: 0.35rem; }
    .architecture-list > div { grid-template-columns: 1fr; gap: 0.25rem; }
    .footer-inner {
        align-items: flex-start;
        flex-direction: column;
        justify-content: center;
        padding-block: 2rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: 0.01ms !important; }
}