:root {
  --glass: #CFE6E0;
  --sea: #0B3A3A;
  --green: #2E9E2E;
  --light: #F6FBFA;
  --pewter: #8E9A98;
  --serif: "Young Serif", Georgia, serif;
  --sans: "Atkinson Hyperlegible", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: linear-gradient(180deg, #D6ECE6 0%, var(--glass) 40%, #C3DED7 100%);
  color: var(--sea);
  font: 400 17px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input { font: inherit; }

.caustics {
  position: fixed; inset: 0; width: 100%; height: 100%;
  pointer-events: none; z-index: 0; opacity: 0.32; mix-blend-mode: soft-light;
}

.mast {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 28px;
  padding: 14px clamp(16px, 3vw, 36px);
  background: rgba(207, 230, 224, 0.82);
  backdrop-filter: blur(10px);
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.logo span { font: 400 28px/1 var(--serif); }
.mast nav { display: flex; gap: 22px; margin-left: auto; }
.mast nav a { text-decoration: none; font-weight: 700; }
.mast nav a:hover { color: var(--green); }
.connect {
  border: 0; background: var(--sea); color: var(--light);
  padding: 10px 18px; border-radius: 24px 24px 24px 6px; font-weight: 700; cursor: pointer;
}
.connect.on { background: var(--green); }

/* ---------- pinned jar beside scrolling chapters ---------- */
.split { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(320px, 46%) 1fr; }
.vessel { position: sticky; top: 60px; height: calc(100vh - 60px); }
#jar3d { width: 100%; height: 100%; display: block; }
.readout {
  position: absolute; left: 50%; bottom: 6%; transform: translateX(-50%);
  text-align: center; width: max-content; max-width: 90%;
}
.readout p { margin: 0; }
.readName { font: 400 24px/1.2 var(--serif); }
.readFill { font-weight: 700; }
.readFill b { color: var(--green); font-size: 22px; }
.readDate { color: #3C5F5C; font-size: 15px; }

.chapters { padding: 0 clamp(18px, 4vw, 64px) 0 clamp(18px, 3vw, 40px); }
.chapter { min-height: 72vh; display: flex; flex-direction: column; justify-content: center; max-width: 620px; padding: 40px 0; }
.chapter.open { min-height: calc(100vh - 60px); }
.chapter.form, .chapter.list, .chapter.numbers, .chapter.faq { min-height: 0; padding: 56px 0; }
h1 { font: 400 clamp(40px, 5.6vw, 72px)/1.04 var(--serif); margin: 0 0 22px; }
h2 { font: 400 clamp(30px, 3.4vw, 44px)/1.1 var(--serif); margin: 0 0 14px; }
.lead { font-size: 19px; margin: 0 0 28px; }
.chapterNo { margin: 0 0 6px; font: 400 28px/1 var(--serif); color: var(--green); }
.chapter p { max-width: 560px; }

.ctaRow { display: flex; flex-wrap: wrap; gap: 14px; }
.cta {
  display: inline-block; text-decoration: none; cursor: pointer;
  background: var(--green); color: var(--light); border: 0;
  padding: 14px 26px; border-radius: 28px 28px 28px 8px;
  font-weight: 700; font-size: 17px;
  box-shadow: 0 10px 24px -12px rgba(11, 58, 58, 0.55);
  transition: transform .15s, background .15s;
}
.cta:hover { transform: translateY(-2px); background: #278A27; }
.cta.quiet { background: transparent; color: var(--sea); box-shadow: inset 0 0 0 2px var(--sea); }
.cta:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }

.jarForm { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 18px; align-items: end; }
.jarForm label { display: flex; flex-direction: column; gap: 6px; font-weight: 700; font-size: 15px; }
.jarForm input {
  padding: 12px 14px; border: 2px solid rgba(11, 58, 58, 0.25); border-radius: 12px;
  background: rgba(246, 251, 250, 0.85); color: var(--sea);
}
.jarForm input:focus { outline: none; border-color: var(--green); }
.jarForm .cta { grid-column: 1 / -1; justify-self: start; }
.note { min-height: 1.6em; font-weight: 700; }
.note.err { color: #8A2C1E; }

.jarList { display: grid; gap: 14px; }
.jarList .empty { color: #3C5F5C; }
.jarRow {
  display: grid; grid-template-columns: 1fr auto; gap: 8px 18px;
  padding: 18px 20px; background: rgba(246, 251, 250, 0.78);
  border-left: 6px solid var(--green); border-radius: 4px 18px 18px 4px;
  cursor: pointer;
}
.jarRow.current { background: var(--light); box-shadow: 0 12px 30px -18px rgba(11, 58, 58, 0.6); }
.jarRow h3 { margin: 0; font: 400 22px/1.2 var(--serif); }
.jarRow .meta { margin: 0; color: #3C5F5C; font-size: 15px; }
.jarRow .bar { grid-column: 1 / -1; height: 10px; background: rgba(11, 58, 58, 0.12); border-radius: 6px; overflow: hidden; }
.jarRow .bar i { display: block; height: 100%; background: var(--green); border-radius: 6px; }
.jarRow .act { grid-column: 1 / -1; display: flex; gap: 10px; flex-wrap: wrap; }
.jarRow .act input { width: 120px; padding: 9px 12px; border: 2px solid rgba(11, 58, 58, 0.25); border-radius: 10px; background: #fff; }
.jarRow .act button { padding: 9px 18px; font-size: 15px; }

.numbers { flex-direction: row; gap: 48px; }
.numbers div { display: flex; flex-direction: column; }
.numbers b { font: 400 48px/1 var(--serif); color: var(--green); }
.numbers span { font-weight: 700; }

.faq details { padding: 14px 0; border-bottom: 1px solid rgba(11, 58, 58, 0.22); }
.faq summary { cursor: pointer; font-weight: 700; font-size: 18px; }
.faq p { margin: 8px 0 0; }

.foot { padding: 48px 0 56px; border-top: 1px solid rgba(11, 58, 58, 0.25); }
.foot p { margin: 4px 0; }
.foot .built { font: 400 24px/1.3 var(--serif); }
.foot a { text-decoration-color: var(--green); text-underline-offset: 3px; }
.foot .addr { word-break: break-all; }

@media (max-width: 900px) {
  .mast nav { display: none; }
  .connect { margin-left: auto; }
  .split { grid-template-columns: 1fr; }
  .vessel { top: 56px; height: 42vh; z-index: 2; background: linear-gradient(180deg, var(--glass) 70%, rgba(207, 230, 224, 0)); }
  .readout { bottom: 4%; }
  .readName { font-size: 18px; }
  .chapter { min-height: 52vh; }
  .chapter.open { min-height: 60vh; }
  .jarForm { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .caustics { display: none; } }