/* ───────────────────────── Tokens (mirrors the app's own palette) ───────────────────────── */
:root {
  color-scheme: light dark;

  --bg: #faf6f0;
  --bg-2: #f2ece2;
  --surface: #ffffff;
  --border: rgba(28, 23, 18, 0.1);
  --text: #1c1712;
  --text-2: rgba(28, 23, 18, 0.62);
  --text-3: rgba(28, 23, 18, 0.34);
  --accent: #b1552d;
  --accent-2: #d97a4c;
  --accent-soft: rgba(177, 85, 45, 0.12);
  --on-accent: #ffffff;
  --paper: #f4ecd9;
  --paper-text: #241d14;
  --nav-bg: rgba(250, 246, 240, 0.72);
  --glow: rgba(217, 122, 76, 0.28);
  --shadow: 0 50px 120px -30px rgba(70, 40, 15, 0.35), 0 12px 40px -12px rgba(70, 40, 15, 0.2);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17130f;
    --bg-2: #1e1912;
    --surface: #292219;
    --border: rgba(255, 255, 255, 0.09);
    --text: #f2ece1;
    --text-2: rgba(242, 236, 225, 0.62);
    --text-3: rgba(242, 236, 225, 0.3);
    --accent: #d97a4c;
    --accent-2: #eba06f;
    --accent-soft: rgba(217, 122, 76, 0.16);
    --on-accent: #1c1206;
    --paper: #241c14;
    --paper-text: #f2ece1;
    --nav-bg: rgba(23, 19, 15, 0.72);
    --glow: rgba(217, 122, 76, 0.22);
    --shadow: 0 60px 140px -30px rgba(0, 0, 0, 0.75), 0 0 0 1px rgba(255, 255, 255, 0.05);
  }
}

/* ───────────────────────── Base ───────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}
h1, h2, h3, p { margin: 0; }
h1, h2, h3, .manifesto__text { text-wrap: balance; }
.lede, .body, .sub { text-wrap: pretty; }
a { color: inherit; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; background: var(--accent-soft); padding: 0.1em 0.4em; border-radius: 6px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
::selection { background: var(--accent-soft); }

section[id] { scroll-margin-top: 56px; }

.wrap { width: min(1180px, 100% - 48px); margin-inline: auto; }
.wrap--narrow { width: min(900px, 100% - 48px); }

.eyebrow { font-size: 0.85rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); }
.h2 { font-size: clamp(2.2rem, 5.6vw, 4.6rem); line-height: 1.04; letter-spacing: -0.035em; font-weight: 700; }
.h2--big { font-size: clamp(2.6rem, 7vw, 6rem); line-height: 1; letter-spacing: -0.045em; }
.h2 .dim { color: var(--text-3); }
.sub { margin-top: 1rem; font-size: clamp(1.05rem, 1.7vw, 1.4rem); color: var(--text-2); }
.accent-text {
  background: linear-gradient(95deg, var(--accent-2), var(--accent) 55%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ───────────────────────── Buttons ───────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.4em;
  padding: 0.95em 1.7em; border-radius: 999px;
  background: var(--accent); color: var(--on-accent);
  font-weight: 600; font-size: 1.02rem; text-decoration: none; border: 1px solid transparent;
  transition: transform 0.25s var(--ease), filter 0.25s, background 0.25s;
}
.btn:hover { transform: scale(1.04); filter: brightness(1.06); }
.btn:active { transform: scale(0.98); }
.btn--small { padding: 0.5em 1.15em; font-size: 0.9rem; }
.btn--ghost { background: transparent; color: var(--accent); border-color: var(--border); }
.btn--ghost:hover { background: var(--accent-soft); }
.btn--block { width: 100%; }
.btn--disabled { background: var(--accent-soft); color: var(--text-3); cursor: not-allowed; }
.btn--disabled:hover { transform: none; filter: none; }

/* ───────────────────────── Nav ───────────────────────── */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 50; height: 56px; transition: background 0.35s, box-shadow 0.35s; }
.nav.scrolled { background: var(--nav-bg); -webkit-backdrop-filter: saturate(180%) blur(22px); backdrop-filter: saturate(180%) blur(22px); box-shadow: 0 1px 0 var(--border); }
.nav__inner { height: 100%; width: min(1180px, 100% - 48px); margin-inline: auto; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav__links { display: flex; gap: 28px; }
.nav__links a { font-size: 0.9rem; color: var(--text-2); text-decoration: none; transition: color 0.2s; }
.nav__links a:hover { color: var(--text); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: -0.02em; text-decoration: none; }
.mark { width: 12px; height: 22px; fill: var(--accent); }

/* ───────────────────────── Reveal-on-enter ───────────────────────── */
.js [data-reveal] {
  opacity: 0; transform: translateY(40px);
  transition: opacity 1s var(--ease) calc(var(--i, 0) * 110ms), transform 1s var(--ease) calc(var(--i, 0) * 110ms), filter 1s var(--ease) calc(var(--i, 0) * 110ms);
}
.js [data-reveal="heading"] { filter: blur(10px); transform: translateY(56px); }
.js [data-reveal].in { opacity: 1; transform: none; filter: none; }

/* ───────────────────────── Hero ───────────────────────── */
.hero {
  --p: 0;
  position: relative; min-height: 100vh; min-height: 100svh;
  display: grid; place-items: center; text-align: center;
  padding: 120px 24px 96px; overflow: clip;
}
.hero__glow {
  position: absolute; left: 50%; top: 46%; width: min(1100px, 130vw); aspect-ratio: 1;
  transform: translate(-50%, -50%) scale(calc(1 + var(--p) * 0.4));
  background: radial-gradient(closest-side, var(--glow), transparent 70%);
  opacity: calc(1 - var(--p) * 1.3); pointer-events: none;
}
.hero__bookmark {
  position: absolute; left: 50%; top: 50%; height: min(92vh, 900px); width: auto;
  transform: translate(-50%, calc(-50% + var(--py, 0px)));
  fill: var(--accent); opacity: 0.09; pointer-events: none;
}
.hero__content {
  position: relative; z-index: 1; max-width: 1100px;
  transform: translateY(calc(var(--p) * -70px)) scale(calc(1 - var(--p) * 0.1));
  opacity: calc(1 - var(--p) * 1.5);
}
.display { font-size: clamp(3rem, 10.6vw, 9rem); line-height: 0.95; letter-spacing: -0.05em; font-weight: 700; margin-top: 1.2rem; }
.display .line { display: block; padding-bottom: 0.08em; }
.lede { max-width: 640px; margin: 2rem auto 0; font-size: clamp(1.1rem, 2vw, 1.5rem); color: var(--text-2); line-height: 1.45; }
.cta { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 2.4rem; }
.scroll-cue { position: absolute; bottom: 28px; left: 50%; width: 22px; height: 36px; margin-left: -11px; border: 2px solid var(--text-3); border-radius: 14px; opacity: calc(1 - var(--p) * 6); }
.scroll-cue span { position: absolute; left: 50%; top: 7px; width: 3px; height: 7px; margin-left: -1.5px; border-radius: 2px; background: var(--text-2); animation: cue 1.8s var(--ease) infinite; }
@keyframes cue { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(12px); opacity: 0; } 100% { opacity: 0; } }

/* ───────────────────────── Sticky scene primitives ───────────────────────── */
.scene { position: relative; }
.sticky { position: sticky; top: 0; height: 100vh; height: 100svh; overflow: hidden; display: flex; align-items: center; justify-content: center; }

/* ───────────────────────── Manifesto (words light up) ───────────────────────── */
.manifesto { height: 300vh; }
.manifesto .sticky { padding: 0 24px; }
.manifesto__text { max-width: 1000px; font-size: clamp(1.9rem, 5.2vw, 4.2rem); line-height: 1.12; letter-spacing: -0.035em; font-weight: 700; text-align: center; }
.manifesto__text em { font-style: normal; color: var(--accent); }
.w { opacity: 0.14; }

/* ───────────────────────── App walkthrough ───────────────────────── */
.appscene {
  --intro: 1; --toRead: 1; --toText: 0; --hl: 0; --scrollT: 0;
  --c0: 0; --c1: 1; --c2: 0;
  height: 560vh;
}
.appscene .sticky { flex-direction: column; gap: clamp(14px, 3vh, 32px); padding: 64px 0 24px; }
.appscene .sticky::before {
  content: ""; position: absolute; left: 50%; top: 58%; width: min(1200px, 140vw); aspect-ratio: 1.4;
  transform: translate(-50%, -50%); background: radial-gradient(closest-side, var(--glow), transparent 72%); opacity: 0.8; pointer-events: none;
}
.captions { position: relative; z-index: 2; width: min(900px, 100% - 48px); height: clamp(96px, 20svh, 190px); flex: none; }
.cap { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.cap .h2 { font-size: clamp(1.9rem, 5vw, 4rem); }
.cap--0 { opacity: var(--c0); transform: translateY(calc((1 - var(--c0)) * 22px)); }
.cap--1 { opacity: var(--c1); transform: translateY(calc((1 - var(--c1)) * 22px)); }
.cap--2 { opacity: var(--c2); transform: translateY(calc((1 - var(--c2)) * 22px)); }

.window {
  position: relative; z-index: 1; flex: none;
  --u: clamp(8.5px, 1.16vw, 13.5px);
  font-size: var(--u);
  width: min(1040px, 92vw, calc(62svh * 1.72)); aspect-ratio: 1.72;
  background: var(--bg); border: 1px solid var(--border); border-radius: 1.3em; overflow: hidden; box-shadow: var(--shadow);
  transform: perspective(1800px) translateY(calc((1 - var(--intro)) * 14em)) rotateX(calc((1 - var(--intro)) * 24deg)) scale(calc(0.7 + var(--intro) * 0.3));
  opacity: calc(0.15 + var(--intro) * 0.85);
  transform-origin: 50% 100%;
}
.window__bar { height: 3em; display: flex; align-items: center; gap: 0.55em; padding: 0 1.3em; border-bottom: 1px solid var(--border); background: var(--bg-2); }
.window__bar i { width: 0.85em; height: 0.85em; border-radius: 50%; background: var(--text-3); opacity: 0.6; }
.window__bar span { margin-left: auto; margin-right: auto; font-size: 1.05em; font-weight: 600; color: var(--text-2); transform: translateX(-1.4em); }
.window__body { display: grid; grid-template-columns: 17em 1fr; height: calc(100% - 3em); }

.side { padding: 1.6em 1.2em; border-right: 1px solid var(--border); background: var(--bg-2); display: flex; flex-direction: column; gap: 0.25em; }
.side__label { font-size: 0.78em; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); padding: 0 0.9em; margin-bottom: 0.4em; }
.side__label--gap { margin-top: 1.6em; }
.side__item { padding: 0.65em 0.9em; border-radius: 0.7em; font-size: 1.05em; color: var(--text-2); }
.side__item.is-active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

.panes { position: relative; overflow: hidden; }
.pane { position: absolute; inset: 0; padding: 1.8em 2.2em; }

.pane--feed { opacity: calc(1 - var(--toRead) * 1.5); transform: translateX(calc(var(--toRead) * -6em)) scale(calc(1 - var(--toRead) * 0.03)); }
.pane__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2em; }
.pane__head h3 { font-size: 1.9em; letter-spacing: -0.03em; }
.pill { font-size: 0.9em; padding: 0.4em 1em; border-radius: 999px; background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.feed { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.7em; }
.row {
  display: flex; align-items: center; justify-content: space-between; gap: 1em;
  padding: 1em 1.2em; border-radius: 1em; background: var(--surface); border: 1px solid var(--border);
}
.row--hl { transform: scale(calc(1 + var(--hl) * 0.018)); box-shadow: 0 0 0 calc(var(--hl) * 0.2em) var(--accent), 0 1em 2.4em -1em rgba(0, 0, 0, calc(var(--hl) * 0.35)); }
.row__title { font-size: 1.12em; font-weight: 600; letter-spacing: -0.015em; }
.row__meta { margin-top: 0.25em; font-size: 0.92em; color: var(--text-2); }
.badge { flex: none; font-size: 0.8em; font-weight: 700; color: var(--accent); background: var(--accent-soft); padding: 0.35em 0.85em; border-radius: 999px; }

.pane--read { opacity: calc(var(--toRead) * 1.5 - 0.3); transform: translateX(calc((1 - var(--toRead)) * 6em)); }
.crumb { font-size: 0.95em; color: var(--accent); font-weight: 600; }
.read__title { margin-top: 0.7em; font-size: 2em; line-height: 1.1; letter-spacing: -0.03em; }
.read__meta { margin-top: 0.4em; font-size: 0.98em; color: var(--text-2); }
.seg { position: relative; display: inline-grid; grid-template-columns: 1fr 1fr; margin-top: 1.2em; padding: 0.25em; border-radius: 999px; background: var(--bg-2); border: 1px solid var(--border); font-size: 0.95em; font-weight: 600; }
.seg span { position: relative; z-index: 1; padding: 0.4em 1.3em; text-align: center; }
.seg__thumb { position: absolute !important; z-index: 0 !important; top: 0.25em; bottom: 0.25em; left: 0.25em; width: calc(50% - 0.25em); padding: 0 !important; border-radius: 999px; background: var(--accent); transform: translateX(calc(var(--toText) * 100%)); }
.seg__a { color: color-mix(in srgb, var(--on-accent) calc((1 - var(--toText)) * 100%), var(--text-2)); }
.seg__b { color: color-mix(in srgb, var(--on-accent) calc(var(--toText) * 100%), var(--text-2)); }
.paper { position: relative; margin-top: 1.1em; height: calc(100% - 9.6em); border-radius: 1.1em; background: var(--paper); border: 1px solid var(--border); overflow: hidden; color: var(--paper-text); font-family: var(--font-serif); }
.paper__layer { position: absolute; inset: 0; padding: 1.5em 1.9em; }
.paper__layer p { font-size: 1.22em; line-height: 1.55; margin-bottom: 0.9em; }
.paper__layer--sum { opacity: calc(1 - var(--toText) * 2.2); transform: translateY(calc(var(--toText) * -1.4em)); }
.paper__layer--full { opacity: calc(var(--toText) * 2.2 - 1.2); }
.paper__layer--full p { font-size: 1.08em; opacity: 0.86; }
.paper__scroll { transform: translateY(calc(var(--scrollT) * -22em)); }

/* ───────────────────────── Steps (horizontal scroll) ───────────────────────── */
.steps { --x: 0px; height: 380vh; }
.steps .sticky { flex-direction: column; align-items: stretch; justify-content: center; gap: clamp(20px, 5vh, 56px); }
.steps__head { width: min(1180px, 100% - 48px); margin-inline: auto; }
.steps__head .h2 { margin-top: 0.6rem; }
.track { display: flex; gap: 28px; padding: 0 max(24px, calc((100vw - 560px) / 2)); transform: translate3d(var(--x), 0, 0); will-change: transform; }
.card {
  --a: 1;
  flex: 0 0 min(84vw, 560px); height: min(56svh, 500px); padding: clamp(22px, 3vw, 34px);
  display: flex; flex-direction: column; justify-content: space-between; gap: 18px;
  border-radius: 34px; background: var(--bg-2); border: 1px solid var(--border);
  opacity: calc(0.35 + var(--a) * 0.65); transform: scale(calc(0.93 + var(--a) * 0.07));
}
.card__visual { flex: 1; min-height: 0; display: grid; place-items: center; border-radius: 24px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; }
.card__num { font-size: 0.85rem; font-weight: 700; color: var(--accent); letter-spacing: 0.1em; }
.card__title { margin-top: 0.4rem; font-size: clamp(1.5rem, 3vw, 2.2rem); line-height: 1.1; letter-spacing: -0.03em; }
.card__text { margin-top: 0.6rem; color: var(--text-2); font-size: clamp(0.98rem, 1.5vw, 1.12rem); }

.picker { width: min(78%, 300px); padding: 18px; border-radius: 18px; background: var(--surface); border: 1px solid var(--border); box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.3); }
.picker__title { font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px; }
.picker__row { display: flex; align-items: center; gap: 12px; padding: 10px 6px; color: var(--text-2); font-size: 0.98rem; }
.picker__row b { width: 20px; height: 20px; border-radius: 6px; border: 2px solid var(--text-3); position: relative; flex: none; }
.picker__row.is-on { color: var(--text); font-weight: 600; }
.picker__row.is-on b { background: var(--accent); border-color: var(--accent); }
.picker__row.is-on b::after { content: ""; position: absolute; left: 5px; top: 1px; width: 5px; height: 10px; border: solid var(--on-accent); border-width: 0 2px 2px 0; transform: rotate(45deg); }

.mini-paper { width: min(74%, 280px); padding: 22px; border-radius: 16px; background: var(--paper); border: 1px solid var(--border); display: flex; flex-direction: column; gap: 12px; box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.3); }
.mini-paper span { height: 9px; border-radius: 5px; background: var(--paper-text); opacity: 0.28; }
.mini-paper span.short { width: 62%; }

.providers { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; padding: 24px; max-width: 420px; }
.providers span { padding: 9px 18px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); font-weight: 600; font-size: 0.95rem; }
.providers span:nth-child(1), .providers span:nth-child(2), .providers span:nth-child(3) { color: var(--accent); background: var(--accent-soft); border-color: transparent; }

/* ───────────────────────── Features ───────────────────────── */
.features { padding: clamp(96px, 16vh, 180px) 0; }
.features .h2 { margin-top: 1rem; }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: clamp(40px, 8vh, 88px); align-items: stretch; }
.feature { padding: 28px; border-radius: 26px; background: var(--bg-2); border: 1px solid var(--border); transition: transform 0.5s var(--ease), opacity 1s var(--ease), background 0.3s; }
.feature svg { width: 42px; height: 42px; padding: 9px; border-radius: 13px; background: var(--accent-soft); fill: none; stroke: var(--accent); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.feature h3 { margin-top: 1.2rem; font-size: 1.28rem; letter-spacing: -0.02em; }
.feature p { margin-top: 0.5rem; color: var(--text-2); font-size: 1rem; }

/* ───────────────────────── Privacy ───────────────────────── */
.privacy { padding: clamp(80px, 22vh, 240px) 0; text-align: center; position: relative; }
.privacy::before { content: ""; position: absolute; left: 50%; top: 50%; width: min(1000px, 130vw); aspect-ratio: 1.6; transform: translate(-50%, -50%); background: radial-gradient(closest-side, var(--glow), transparent 70%); opacity: 0.6; pointer-events: none; }
.privacy .wrap { position: relative; }
.statements { display: flex; flex-direction: column; margin-top: 1.4rem; font-size: clamp(2.4rem, 7.4vw, 6.8rem); line-height: 1; letter-spacing: -0.05em; font-weight: 700; }
.statements span { display: block; padding-bottom: 0.06em; text-wrap: balance; }
.privacy .body { max-width: 640px; margin: 2.6rem auto 0; font-size: clamp(1.05rem, 1.8vw, 1.35rem); color: var(--text-2); }

/* ───────────────────────── Download ───────────────────────── */
.download { padding: clamp(80px, 14vh, 160px) 0 clamp(80px, 14vh, 140px); }
.download .h2 { margin-top: 1rem; }
.dl-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: clamp(36px, 7vh, 72px); }
.dl { display: flex; flex-direction: column; padding: 28px; border-radius: 26px; background: var(--bg-2); border: 1px solid var(--border); }
.dl h3 { font-size: 1.5rem; letter-spacing: -0.03em; }
.dl p { margin-top: 0.5rem; color: var(--text-2); }
.dl .dl__fmt { margin: 1.2rem 0 1.6rem; color: var(--text); font-weight: 600; font-size: 0.95rem; }
.dl .btn { margin-top: auto; }
.dl--soon { opacity: 0.7; }
.fine { margin-top: 28px; text-align: center; color: var(--text-2); font-size: 0.9rem; }

/* ───────────────────────── Footer ───────────────────────── */
.footer { border-top: 1px solid var(--border); padding: 36px 0 48px; color: var(--text-2); font-size: 0.92rem; }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.footer .brand { color: var(--text); }
.footer nav { display: flex; gap: 22px; }
.footer nav a { text-decoration: none; }
.footer nav a:hover { color: var(--text); }

/* ───────────────────────── Responsive ───────────────────────── */
@media (max-width: 1080px) {
  .grid, .dl-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .grid, .dl-grid { grid-template-columns: 1fr; }
  .window { --u: 9px; width: 94vw; aspect-ratio: 0.9; }
  .window__body { grid-template-columns: 1fr; }
  .side { display: none; }
  .pane { padding: 1.5em; }
  .paper { height: calc(100% - 10.5em); }
  .paper__layer p { font-size: 1.15em; }
  .row__title { font-size: 1.05em; }
  .appscene .sticky { padding-top: 56px; }
  .captions { height: clamp(110px, 22svh, 170px); }
  .feature[data-speed] { translate: none !important; }
}

/* ───────────────────────── Reduced motion: static, fully visible ───────────────────────── */
.no-motion html, .no-motion { scroll-behavior: auto; }
.no-motion [data-reveal] { opacity: 1 !important; transform: none !important; filter: none !important; transition: none !important; }
.no-motion .w { opacity: 1; }
.no-motion .scene { height: auto !important; }
.no-motion .sticky { position: static; height: auto; min-height: 0; padding: 96px 0; }
.no-motion .appscene .sticky { padding-top: 96px; }
.no-motion .cap--0, .no-motion .cap--2 { display: none; }
.no-motion .captions { height: auto; }
.no-motion .cap { position: static; }
.no-motion .track { flex-direction: column; align-items: center; transform: none; padding: 0 24px; }
.no-motion .card { opacity: 1; transform: none; flex-basis: auto; width: min(560px, 100%); }
.no-motion .scroll-cue span { animation: none; }
@media (prefers-reduced-motion: reduce) { .scroll-cue span { animation: none; } }