/* The landing page: what this is for, in the look every page of ours shares (style.css).
   It has no bar of pages down the left: nobody is signed in here, and there is one place
   to go, which is the sign-in page. Its drawings are part of the page itself, so they
   take the same colours as everything else, in light and in dark. */

body.home { display: block; }
.skip { position: absolute; left: -999rem; }
.skip:focus { left: 1rem; top: 1rem; z-index: 5; background: var(--card); padding: 0.4rem 0.8rem; border-radius: 8px; }

.top { position: sticky; top: 0; z-index: 4; max-width: none; margin: 0; padding: 0.7rem clamp(1rem, 4vw, 3rem); display: flex; flex-wrap: nowrap; align-items: center; gap: 1rem 2rem; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(10px); }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--fg); text-decoration: none; font: 600 1.2rem/1.2 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; letter-spacing: 0.01em; }
.mark { width: 1.9rem; height: 1.9rem; flex: none; }
.mark rect { fill: var(--accent); }
.mark path { fill: none; stroke: var(--card); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.top nav { display: flex; gap: 1.4rem; margin-left: auto; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: var(--accent); }
.actions { display: flex; flex-wrap: nowrap; align-items: center; gap: 0.7rem; }

.cta { display: inline-block; background: var(--accent); color: var(--card); text-decoration: none; font-weight: 600; white-space: nowrap; border-radius: 999px; padding: 0.4rem 1.15rem; border: 1px solid var(--accent); box-shadow: var(--shadow); }
.cta:hover { filter: brightness(1.07); transform: translateY(-1px); }
.cta.big { font-size: 1.1rem; padding: 0.7rem 1.9rem; }
.quiet { color: var(--fg); text-underline-offset: 0.25em; }

main { max-width: none; margin: 0; padding: 0; }
main > section { padding: clamp(2.5rem, 7vw, 5.5rem) clamp(1rem, 4vw, 3rem); }
.inner, .band > h2, .band > .intro, .cards, .steps { max-width: 68rem; margin-left: auto; margin-right: auto; }
h1, h2, h3 { font-family: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; letter-spacing: 0.005em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.2rem); line-height: 1.2; margin-top: 0; margin-bottom: 0.8rem; }
h3 { font-size: 1.2rem; line-height: 1.3; margin: 0.9rem 0 0.4rem; }
.band > .intro { font-size: 1.12rem; color: var(--muted); max-width: 46rem; }
.band > h2, .band > .intro { text-align: center; }
.small { font-size: 0.88rem; }

/* --- the top of the page --- */
main > .hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); align-items: center; gap: clamp(1.5rem, 5vw, 4rem); max-width: 80rem; margin: 0 auto; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.8rem; font-weight: 600; color: var(--accent); margin: 0 0 0.9rem; }
.hero h1 { font-size: clamp(2.2rem, 5.4vw, 3.9rem); line-height: 1.06; font-weight: 600; margin: 0 0 1.1rem; text-wrap: balance; }
.lede { font-size: clamp(1.05rem, 1.6vw, 1.22rem); color: var(--muted); max-width: 36rem; margin: 0 0 1.6rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.6rem; margin: 0 0 1.6rem; }
.assurances { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem 0.6rem; margin: 0; padding: 0; }
.assurances li { font-size: 0.86rem; color: var(--muted); background: var(--card); border: 1px solid var(--line); border-radius: 999px; padding: 0.22rem 0.8rem; }
.hero-art { margin: 0; }
.hero-art svg { width: 100%; height: auto; display: block; border-radius: 28px; border: 1px solid var(--line); background: linear-gradient(180deg, color-mix(in srgb, var(--card) 70%, transparent), var(--bg-2)); box-shadow: var(--shadow); }

.sun { fill: var(--accent); opacity: 0.85; }
.sun-ring { fill: none; stroke: var(--accent); stroke-width: 1.5; opacity: 0.3; }
.hill.far { fill: var(--accent-soft); }
.hill.near { fill: var(--bg-2); stroke: var(--line); }
.tree rect { fill: var(--muted); opacity: 0.7; }
.tree ellipse { fill: var(--muted); opacity: 0.35; }
.roof { fill: var(--accent); }
.chimney { fill: var(--accent); opacity: 0.8; }
.wall { fill: var(--card); stroke: var(--line); stroke-width: 2; }
.door { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 2; }
.knob { fill: var(--accent); }
.window { fill: var(--bg-2); stroke: var(--line); stroke-width: 2; }
.window.lit { fill: var(--new); stroke: var(--accent); }
.pane { fill: none; stroke: var(--line); stroke-width: 2; }
.pulse-card rect { fill: var(--card); stroke: var(--line); stroke-width: 1.5; }
.pulse { fill: none; stroke: var(--accent); stroke-width: 3.5; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 420; stroke-dashoffset: 420; animation: draw 2.4s 0.4s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.dot { fill: var(--accent); }
.pulse-card .dot { animation: beat 2.6s 2.8s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes beat { 0%, 100% { transform: scale(1); opacity: 1; } 50% { transform: scale(1.7); opacity: 0.45; } }

/* --- what it is for --- */
.band.alt { background: color-mix(in srgb, var(--card) 62%, transparent); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1.2rem; margin-top: 2.2rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 1.5rem 1.5rem 1.3rem; box-shadow: var(--shadow); }
.card:hover { transform: translateY(-3px); border-color: var(--accent); }
.card p { margin: 0; color: var(--muted); }
.icon { width: 3.2rem; height: 3.2rem; padding: 0.4rem; border-radius: 14px; background: var(--accent-soft); fill: none; stroke: var(--accent); stroke-width: 2.6; stroke-linecap: round; stroke-linejoin: round; }

/* --- how it works --- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 2rem; margin-top: 2.4rem; padding: 0; }
.steps p { margin: 0; color: var(--muted); }
.num { display: grid; place-items: center; width: 2.6rem; height: 2.6rem; border-radius: 50%; background: var(--accent); color: var(--card); font: 600 1.2rem/1 "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif; box-shadow: var(--shadow); }

/* --- cost and privacy --- */
main > .split { display: grid; grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); gap: clamp(1.5rem, 5vw, 4rem); max-width: 74rem; margin: 0 auto; }
.split p { color: var(--muted); }
.ticks { list-style: none; margin: 1rem 0 0; padding: 0; display: grid; gap: 0.55rem; }
.ticks li { position: relative; padding-left: 1.9rem; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 0.28em; width: 1.15rem; height: 1.15rem; border-radius: 50%; background: var(--accent-soft); border: 1px solid var(--accent); }
.ticks li::after { content: ""; position: absolute; left: 0.42rem; top: 0.48em; width: 0.3rem; height: 0.55rem; border: solid var(--accent); border-width: 0 2px 2px 0; transform: rotate(40deg); }

/* --- research --- */
main > .research { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); align-items: center; gap: clamp(1.5rem, 5vw, 4rem); padding-left: max(clamp(1rem, 4vw, 3rem), calc((100% - 68rem) / 2)); padding-right: max(clamp(1rem, 4vw, 3rem), calc((100% - 68rem) / 2)); }
.research-art { margin: 0 0 0 auto; max-width: 24rem; width: 100%; }
.research-art svg { width: 100%; height: auto; display: block; }
.sheet { fill: var(--card); stroke: var(--line); stroke-width: 1.5; }
.grid { fill: none; stroke: var(--line); stroke-width: 1; }
.trend { fill: none; stroke-width: 3.5; stroke-linecap: round; }
.trend.a { stroke: var(--accent); }
.trend.b { stroke: var(--muted); opacity: 0.55; stroke-dasharray: 2 9; }

/* --- the end --- */
.closing { text-align: center; }
.closing p { margin: 0.5rem auto; }
.closing .cta { margin: 0.8rem 0 1.2rem; }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 1rem; padding: 1.4rem clamp(1rem, 4vw, 3rem); border-top: 1px solid var(--line); color: var(--muted); font-size: 0.9rem; }

html.ready .card, html.ready .cta { transition: background-color var(--ease), color var(--ease), border-color var(--ease), box-shadow var(--ease), transform var(--ease), filter var(--ease); }

@media (max-width: 52rem) {
  main > .hero, main > .research { grid-template-columns: minmax(0, 1fr); }
  .hero-art { max-width: 30rem; margin: 0 auto; }
  .research-art { margin: 0 auto; }
  .top nav { display: none; }
  .actions { margin-left: auto; }
}
@media (max-width: 30rem) {
  .brand { font-size: 1rem; }
  #theme { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .pulse { stroke-dashoffset: 0; }
}