/* =====================================================================
 * STYLES ,  Final Upgrade AI proposal microsite
 * ===================================================================== */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: var(--font-body); line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
body.gated { overflow: hidden; }
/* While gated, render nothing behind the cover so the proposal text is not readable. */
body.gated #app, body.gated .toc, body.gated .foot, body.gated .nav-open-btn { display: none !important; }
a { color: var(--magenta); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-head); line-height: 1.12; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }
.muted { color: var(--text-dim); }
.small { font-size: 0.86rem; }
ul { margin: 0 0 1em; padding-left: 1.15em; }
li { margin: 0.3em 0; }

/* ---------- gate ---------- */
.gate {
  position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center;
  background: var(--bg);
  background-image: radial-gradient(1200px 600px at 50% -10%, rgba(30,139,255,0.40), transparent 70%);
}
.gate-card {
  width: min(92vw, 420px); background: var(--surface); border: 1px solid var(--line-strong);
  border-radius: var(--radius); padding: 38px 34px; text-align: center; box-shadow: var(--shadow);
}
.gate-brand { font-family: var(--font-head); font-weight: 700; letter-spacing: 0.04em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.gate-card h2 { margin: 10px 0 4px; }
.gate-card form { display: flex; gap: 10px; margin-top: 18px; }
.gate-card input {
  flex: 1; padding: 12px 14px; border-radius: var(--radius-sm); border: 1px solid var(--line-strong);
  background: var(--bg-2); color: var(--text); font-size: 1rem;
}
.gate-error { display: none; color: var(--magenta); margin: 12px 0 0; }
.gate-hint { color: var(--text-mute); font-size: 0.84rem; margin: 8px 0 0; }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 11px 18px; border-radius: 999px; border: 1px solid var(--line-strong);
  background: var(--surface-2); color: var(--text); font: 600 0.92rem var(--font-body);
  cursor: pointer; transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s; text-decoration: none;
}
.btn:hover { transform: translateY(-1px); border-color: var(--magenta); text-decoration: none; }
.btn-accent { background: var(--grad); border: none; color: #fff; }
.btn-sm { padding: 8px 14px; font-size: 0.84rem; }
.btn-ghost { background: transparent; }
.btn.flashed { background: var(--accent); color: var(--ink); border-color: var(--accent); }
.btn-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-top: 14px; }

/* ---------- layout / TOC ---------- */
.toc {
  position: fixed; top: 0; left: 0; width: var(--toc-w); height: 100vh; padding: 26px 18px;
  border-right: 1px solid var(--line); background: var(--bg-2); z-index: 50;
  display: flex; flex-direction: column; gap: 18px; overflow-y: auto;
}
.toc-brand { font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; color: var(--text); }
.toc-brand span { color: var(--magenta); margin: 0 4px; }
.toc-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.toc-list a {
  display: block; padding: 7px 10px; border-radius: 8px; color: var(--text-dim);
  font-size: 0.9rem; border-left: 2px solid transparent;
}
.toc-list a:hover { color: var(--text); background: var(--surface); text-decoration: none; }
.toc-list a.active { color: var(--text); border-left-color: var(--magenta); background: var(--grad-soft); }

/* collapsible + resizable nav */
.toc-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.nav-toggle { flex: none; width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--text-dim); cursor: pointer; font-size: 1rem; line-height: 1; }
.nav-toggle:hover { color: var(--text); border-color: var(--blue); }
.toc-resize { position: absolute; top: 0; right: 0; width: 6px; height: 100%; cursor: col-resize; }
.toc-resize:hover { background: var(--line-strong); }
.nav-open-btn { position: fixed; top: 14px; left: 14px; z-index: 60; display: none;
  width: 40px; height: 40px; border-radius: 10px; border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--text); font-size: 1.1rem; cursor: pointer; box-shadow: var(--shadow); }
.toc { transition: transform 0.25s ease; }
#app, .foot { transition: margin-left 0.25s ease; }
body.nav-resizing { user-select: none; cursor: col-resize; }
body.nav-resizing .toc, body.nav-resizing #app, body.nav-resizing .foot { transition: none; }
@media (min-width: 901px) {
  body.nav-collapsed .toc { transform: translateX(-100%); }
  body.nav-collapsed #app, body.nav-collapsed .foot { margin-left: 0; }
  body.nav-collapsed .nav-open-btn { display: block; }
}

#app { margin-left: var(--toc-w); }
.foot {
  margin-left: var(--toc-w); padding: 30px 8%; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; color: var(--text-dim);
}
.foot-right { display: inline-flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.foot-logout { background: none; border: 1px solid var(--line-strong); color: var(--text-dim);
  font: 600 0.8rem var(--font-head); letter-spacing: 0.04em; padding: 6px 14px; border-radius: 999px; cursor: pointer;
  transition: border-color 0.15s, color 0.15s; }
.foot-logout:hover { border-color: var(--magenta); color: var(--text); }

/* ---------- sections ---------- */
.section { padding: 70px 8%; border-top: 1px solid var(--line); }
.section[data-tone="dark"] { background: var(--grad-soft); }
.section-inner { max-width: var(--maxw); margin: 0 auto; }
.eyebrow { font: 700 0.78rem var(--font-head); letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--magenta); margin-bottom: 10px; }
.section-title { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin: 0 0 22px; }
.sub-h { font-size: 1.25rem; margin: 34px 0 14px; }
.lead { font-size: 1.12rem; color: var(--text-dim); max-width: 760px; }
.kv { margin: 4px 0; }

/* reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- hero ---------- */
.hero { position: relative; padding: 96px 8% 70px;
  background: radial-gradient(1000px 520px at 18% -10%, rgba(255,20,147,0.20), transparent 60%),
              radial-gradient(900px 520px at 90% 0%, rgba(91,33,182,0.28), transparent 60%); }
.hero-inner { max-width: var(--maxw); margin: 0 auto; }
.brandline { font: 600 0.9rem var(--font-head); letter-spacing: 0.06em; color: var(--text-dim); margin-bottom: 26px; }
.brandline span { color: var(--magenta); }
.hero h1 { font-size: clamp(2.2rem, 5.5vw, 4rem); margin: 6px 0 18px;
  background: linear-gradient(120deg, #fff 30%, var(--magenta)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero-sub { font-size: 1.2rem; color: var(--text-dim); max-width: 720px; }
.hero-meta { margin-top: 22px; color: var(--text-mute); font-size: 0.86rem; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.pill { display: inline-block; padding: 6px 12px; border-radius: 999px; font-size: 0.8rem;
  background: var(--grad); color: #fff; }
.pill.ghost { background: var(--surface-2); border: 1px solid var(--line-strong); color: var(--text-dim); }

/* ---------- cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 8px; }
.card-grid.two { grid-template-columns: 1fr 1fr; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h4 { margin: 0 0 8px; color: var(--text); }
.card p { margin: 0; color: var(--text-dim); }
.callout { margin-top: 22px; padding: 22px 24px; border-radius: var(--radius);
  background: var(--grad-soft); border: 1px solid var(--line-strong); }
.callout.ghost { background: var(--surface); }
.callout-h { font: 700 1rem var(--font-head); margin-bottom: 8px; }
.facts { columns: 2; column-gap: 28px; }
@media (max-width: 640px) { .facts { columns: 1; } }

/* ---------- accordion ---------- */
.acc-hint { font: 600 0.82rem var(--font-body); color: var(--magenta); margin: 10px 0 2px; }
.acc-list { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.acc { border: 1px solid var(--line-strong); border-left: 3px solid var(--magenta); border-radius: var(--radius-sm); background: var(--surface); overflow: hidden; }
.acc.open { border-left-color: var(--blue); }
.acc-head { width: 100%; text-align: left; padding: 15px 16px; background: none; border: none; color: var(--text);
  font: 500 1rem var(--font-body); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.acc-head:hover { background: var(--surface-2); }
.acc-title { flex: 1; }
.acc-toggle-ui { display: inline-flex; align-items: center; gap: 8px; flex: none; }
.acc-cue { font: 700 0.7rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; color: var(--magenta); white-space: nowrap; }
.acc-cue::after { content: "Expand"; }
.acc.open .acc-cue::after { content: "Close"; }
.acc.open .acc-cue { color: var(--blue); }
.acc-chevron { color: #fff; background: var(--grad); width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center; font-size: 0.7rem; line-height: 1; transition: transform 0.2s ease; }
.acc.open .acc-chevron { transform: rotate(180deg); }
.acc-head:hover .acc-chevron { box-shadow: 0 0 0 4px var(--grad-soft); }
.acc-body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.28s ease; }
.acc.open .acc-body { grid-template-rows: 1fr; }
.acc-body-inner { overflow: hidden; }
.acc-body-inner > * { padding: 0 18px; }
.acc.open .acc-body-inner { padding: 4px 0 16px; }

/* ---------- program skeleton / steps ---------- */
.skeleton { margin-top: 16px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.skeleton-h { font: 700 0.95rem var(--font-head); color: var(--magenta); margin-bottom: 14px; }
.steps { display: flex; flex-direction: column; gap: 12px; margin: 10px 0; }
.step { display: flex; gap: 14px; align-items: flex-start; }
.step-n { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--grad); color: #fff; font: 700 0.9rem var(--font-head); }
.step-phase { font: 700 0.72rem var(--font-head); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.step-title { font-weight: 600; }
.step-meta { color: var(--text-mute); font-size: 0.85rem; }
.step-focus { color: var(--text-dim); margin: 6px 0 0; }

/* ---------- function grid + cards ---------- */
.fn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin-top: 26px; }
.fn-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  transition: border-color 0.2s, transform 0.15s; }
.fn-card:hover { border-color: var(--magenta); transform: translateY(-3px); }
.fn-ico { font-size: 1.8rem; }
.fn-card h4 { margin: 8px 0 4px; }
.fn-head { color: var(--text-dim); font-size: 0.95rem; }
.mini { font-size: 0.86rem; color: var(--text-mute); }

/* function deep view */
.fn-topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 14px 8%; background: var(--surface); border-bottom: 1px solid var(--line); }
.fn-back { color: var(--magenta); font-weight: 600; }
.fn-back:hover { text-decoration: none; }
.fn-brand { font: 700 0.95rem var(--font-head); color: var(--text); }
.fn-topbar u { text-underline-offset: 2px; }
.fn-introwrap { max-width: var(--maxw); margin: 0 auto; padding: 16px 8% 0; }
.fn-intro { background: var(--grad-soft); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 14px 18px; }
.fn-intro > summary { cursor: pointer; font: 700 0.98rem var(--font-head); color: var(--text); list-style: revert; }
.fn-intro p { margin: 8px 0 0; color: var(--text-dim); }
.fn-hero { padding: 40px 8% 30px;
  background: radial-gradient(800px 360px at 10% -30%, rgba(255,46,146,0.12), transparent 60%); }
.fn-hero h1 { font-size: clamp(2rem, 5vw, 3.2rem); }

/* solo / shared single-function page */
body.solo .toc { display: none; }
body.solo .foot { display: none; }
body.solo #app { margin-left: 0; }
body.solo .nav-open-btn { display: none !important; }
.solo-ov { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line-strong); }
.solo-ov-h { font: 700 0.82rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; color: var(--magenta); margin-bottom: 6px; }
.solo-ov p { margin: 0 0 12px; color: var(--text-dim); }
.cohort-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.uc-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.uc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.uc-h { font: 700 0.8rem var(--font-head); letter-spacing: 0.08em; text-transform: uppercase; color: var(--magenta); margin-bottom: 8px; }
.uc ul { font-size: 0.92rem; color: var(--text-dim); }

.share-banner { padding: 14px 8%; background: var(--grad-soft); border-bottom: 1px solid var(--line);
  display: flex; gap: 14px; align-items: center; justify-content: space-between; flex-wrap: wrap; font-size: 0.92rem; }
.share-banner.light { background: var(--surface); }

.feedback { margin-top: 26px; padding: 22px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); }
.feedback textarea { width: 100%; min-height: 90px; margin-top: 10px; padding: 12px; border-radius: var(--radius-sm);
  background: var(--bg-2); border: 1px solid var(--line-strong); color: var(--text); font: 400 0.95rem var(--font-body); resize: vertical; }
.fb-msg { color: var(--accent); font-size: 0.88rem; }

/* ---------- pathways ---------- */
.path-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 18px; margin-top: 10px; }
.path-card { position: relative; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.path-card.featured { border-color: var(--magenta); box-shadow: 0 0 0 1px var(--magenta), var(--shadow); }
.ribbon { position: absolute; top: -11px; right: 18px; background: var(--grad); color: #fff;
  font: 700 0.72rem var(--font-head); letter-spacing: 0.08em; padding: 4px 12px; border-radius: 999px; text-transform: uppercase; }
.path-tier { font: 700 0.74rem var(--font-head); letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent); }
.path-card h4 { font-size: 1.5rem; margin: 4px 0 6px; }
.path-price { font: 700 1.1rem var(--font-head); color: var(--magenta); margin-bottom: 12px; }
.path-head { font-weight: 600; }
.incl-h { font: 700 0.74rem var(--font-head); letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-mute); margin-top: 12px; }
.incl ul { font-size: 0.9rem; }
.incl.muted ul { color: var(--text-mute); }

/* ---------- builder / calculator ---------- */
.builder { margin-top: 18px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 20px; }
.builder-controls { display: flex; flex-direction: column; gap: 18px; }
.ctl { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.ctl-h { font: 700 0.82rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; color: var(--magenta); margin-bottom: 12px; }
.chk-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.chk-col { display: flex; flex-direction: column; gap: 8px; }
.chk { display: flex; gap: 8px; align-items: center; font-size: 0.92rem; cursor: pointer; }
.chk input { accent-color: var(--magenta); width: 16px; height: 16px; }
.budget-row { display: flex; align-items: center; gap: 8px; font: 700 1.2rem var(--font-head); }
.budget-row input { flex: 1; padding: 10px 12px; border-radius: var(--radius-sm); background: var(--bg-2);
  border: 1px solid var(--line-strong); color: var(--text); font: 700 1.1rem var(--font-head); }
.budget-note { color: var(--text-mute); font-size: 0.82rem; margin-top: 8px; }
.builder-out { background: var(--grad-soft); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 22px; align-self: start; }
.rec-tag { font: 700 0.74rem var(--font-head); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.rec-name { font: 700 1.5rem var(--font-head); margin: 4px 0; }
.rec-name span { font-size: 0.8rem; color: var(--text-dim); }
.rec-why { color: var(--text-dim); }
.estimate { margin-top: 18px; border-top: 1px solid var(--line-strong); padding-top: 16px; }
.est-line, .est-total, .est-budget { display: flex; justify-content: space-between; gap: 10px; padding: 5px 0; }
.est-line { color: var(--text-dim); font-size: 0.92rem; }
.est-total { font: 700 1.2rem var(--font-head); border-top: 1px solid var(--line); margin-top: 6px; padding-top: 12px; }
.est-budget { color: var(--accent); }
.est-disc { color: var(--text-mute); font-size: 0.78rem; margin-top: 8px; }
.est-note { margin-top: 10px; padding: 9px 12px; font-size: 0.82rem; color: var(--text-dim);
  background: rgba(30,139,255,0.08); border: 1px solid var(--line); border-left: 3px solid var(--blue); border-radius: 8px; }

/* ---------- agenda arc / tables ---------- */
.arc { display: flex; flex-direction: column; gap: 12px; }
.arc-beat { display: flex; gap: 14px; }
.arc-n { flex: none; width: 28px; height: 28px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--magenta);
  display: grid; place-items: center; font: 700 0.85rem var(--font-head); color: var(--magenta); }
.arc-beat p { margin: 2px 0 0; color: var(--text-dim); font-size: 0.92rem; }
.table-wrap { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.tbl th, .tbl td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { color: var(--magenta); font: 700 0.78rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; }
.tbl td { color: var(--text-dim); }

/* ---------- timeline ---------- */
.tl { display: flex; flex-direction: column; margin-top: 14px; max-width: 800px; }
.tl-item { display: flex; gap: 16px; }
.tl-rail { flex: none; display: flex; flex-direction: column; align-items: center; }
.tl-rail::after { content: ""; flex: 1; width: 2px; background: var(--line-strong); margin: 4px 0; }
.tl-item:last-child .tl-rail::after { display: none; }
.tl-body { padding-bottom: 24px; }
.tl-when { font: 700 1rem var(--font-head); color: var(--magenta); margin-bottom: 4px; }
.tl-what { color: var(--text-dim); font-size: 0.95rem; }

/* ---------- why us ---------- */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.why { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.why h4 { color: var(--magenta); font-size: 0.95rem; letter-spacing: 0.06em; margin: 0 0 8px; }
.why p { margin: 0; color: var(--text-dim); }
.logos { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.logo { padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; color: var(--text-dim); font-size: 0.85rem; }

/* ---------- contacts ---------- */
.contacts { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 20px; }
.contact { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; display: flex; flex-direction: column; }
.contact span { color: var(--text-dim); font-size: 0.9rem; }

/* ---------- nested TOC ---------- */
.nav-li { position: relative; }
.toc-sub { list-style: none; display: none; margin: 4px 0 8px 16px; padding: 2px 0 2px 14px; border-left: 1px solid var(--line-strong); }
.has-kids.open > .toc-sub { display: block; }
.toc-sub a { display: block; font-size: 0.82rem; padding: 5px 10px; color: var(--text-mute); border-radius: 7px; }
.toc-sub a:hover { color: var(--text); background: var(--surface); }
.toc-sub a.active { color: var(--text); background: var(--grad-soft); }
.kid-toggle { position: absolute; right: 4px; top: 6px; width: 24px; height: 24px; border: none; background: none;
  color: var(--text-mute); cursor: pointer; border-radius: 6px; font-size: 0.82rem; line-height: 1; transition: transform 0.2s, color 0.15s; }
.kid-toggle:hover { color: var(--text); background: var(--surface); }
.has-kids.open > .kid-toggle { transform: rotate(90deg); color: var(--text); }

/* ---------- hero glow (subtle motion, less "standard") ---------- */
.hero { overflow: hidden; }
.hero-glow { position: absolute; inset: -20% -10% auto -10%; height: 130%; pointer-events: none; z-index: 0;
  background: radial-gradient(620px 360px at 18% 8%, rgba(30,139,255,0.30), transparent 60%),
              radial-gradient(560px 360px at 88% 0%, rgba(255,46,146,0.22), transparent 60%);
  animation: drift 16s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(0,-3%,0) scale(1.06); } }
.hero-inner { position: relative; z-index: 1; }
.hero h1 { background: linear-gradient(120deg, var(--text) 18%, var(--blue) 72%, var(--magenta));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; color: transparent; }
/* graceful fallback if text-clip is unsupported */
@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .hero h1, .gate-brand, .stat-num, .sess-title { -webkit-text-fill-color: currentColor; color: var(--text); background: none; }
}
.hero-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
.hero-top .brandline { margin-bottom: 0; }

/* ---------- stat band (animated count-up) ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 4px 0 30px; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  border-top: 3px solid transparent; border-image: var(--grad) 1; padding: 20px; text-align: center;
  transition: transform 0.15s, box-shadow 0.2s; }
.stat:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.stat-num { font: 700 2.1rem var(--font-head);
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-lab { color: var(--text-dim); font-size: 0.82rem; margin-top: 4px; }

/* ---------- understanding 3 + 1 ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.grid-2x2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 8px; }
.card-bar { height: 4px; width: 42px; border-radius: 4px; background: var(--grad); margin-bottom: 12px;
  transition: width 0.3s ease; }
.tilt { transition: transform 0.18s ease, border-color 0.2s ease, box-shadow 0.2s ease; }
.tilt:hover { transform: translateY(-4px); border-color: var(--blue); box-shadow: var(--shadow); }
.tilt:hover .card-bar { width: 100%; }
.feature-card { display: flex; gap: 18px; align-items: center; margin-top: 16px; padding: 24px 26px;
  border-radius: var(--radius); background: var(--grad-soft); border: 1px solid var(--line-strong);
  position: relative; overflow: hidden; }
.feature-card::after { content: ""; position: absolute; right: -40px; top: -40px; width: 160px; height: 160px;
  border-radius: 50%; background: radial-gradient(circle, rgba(30,139,255,0.25), transparent 70%); }
.fc-mark { flex: none; width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center;
  background: var(--grad); color: #fff; font-size: 1.4rem; }
.fc-h { font: 700 1.1rem var(--font-head); margin-bottom: 4px; }

/* context chips (micro-engagement) */
.hint { font: 500 0.78rem var(--font-body); color: var(--text-mute); }
.chips-wrap { display: flex; flex-wrap: wrap; gap: 8px; }
.factchip { padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line-strong);
  background: var(--bg-2); color: var(--text-dim); font: 500 0.86rem var(--font-body); cursor: pointer;
  transition: all 0.16s ease; }
.factchip:hover { border-color: var(--blue); color: var(--text); transform: translateY(-2px); }
.factchip.on { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- program design: rhythm strip + cohorts ---------- */
.phase-strip { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; margin: 8px 0 14px; }
.phase-chip { display: flex; align-items: center; justify-content: center; gap: 8px; padding: 9px 12px; border-radius: 12px;
  background: var(--bg-2); border: 1px solid var(--line); font-size: 0.82rem; text-align: center; }
.phase-chip span { flex: none; width: 20px; height: 20px; border-radius: 50%; background: var(--grad); color: #fff;
  display: grid; place-items: center; font: 700 0.72rem var(--font-head); }
.phase-chip.live { background: var(--grad-soft); border-color: var(--line-strong); font-weight: 600; }
@media (max-width: 760px) { .phase-strip { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 460px) { .phase-strip { grid-template-columns: repeat(2, 1fr); } }
.cohorts { display: flex; flex-wrap: wrap; gap: 8px; }
.cohort { font-size: 0.8rem; color: var(--text-dim); padding: 5px 11px; border-radius: 8px;
  background: rgba(30,139,255,0.10); border: 1px solid var(--line); }

/* program accordions */
.prog-list .prog-acc { border-color: var(--line-strong); }
.prog-acc.open { border-color: var(--blue); box-shadow: 0 0 0 1px rgba(30,139,255,0.4); }
.prog-head { display: inline-flex; align-items: baseline; gap: 6px; flex-wrap: wrap; }
.fn-head-inline { color: var(--text-dim); font-weight: 400; font-size: 0.9rem; margin-left: 6px; }
.prog-blurb { color: var(--text-dim); }
.painstrip { margin: 10px 0 4px; }
.prog-sub { font-size: 1.1rem; margin: 18px 0 12px; }

/* ---------- weekly program detail (timeline) ---------- */
.weeks { position: relative; display: flex; flex-direction: column; gap: 14px; }
.wk { display: flex; gap: 14px; }
.wk-rail { flex: none; display: flex; flex-direction: column; align-items: center; }
.wk-n { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center;
  background: var(--surface-2); border: 1px solid var(--line-strong); color: var(--text);
  font: 700 0.95rem var(--font-head); }
.wk-live .wk-n { background: var(--grad); border: none; color: #fff; }
.wk-rail::after { content: ""; flex: 1; width: 2px; background: var(--line); margin-top: 4px; }
.wk:last-child .wk-rail::after { display: none; }
.wk-body { flex: 1; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 20px; }
.wk-live .wk-body { border-color: var(--line-strong); background: linear-gradient(180deg, rgba(30,139,255,0.07), var(--surface)); }
.wk-when { font: 700 0.72rem var(--font-head); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.wk-head h5 { font-size: 1.1rem; margin: 4px 0 2px; }
.wk-meta { color: var(--text-mute); font-size: 0.84rem; }
.tag-live, .tag-uu { font-size: 0.64rem; padding: 2px 7px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }
.tag-live { background: var(--magenta); color: #fff; }
.tag-uu { background: var(--surface-2); color: var(--text-dim); border: 1px solid var(--line); }
.wk-obj { color: var(--text-dim); margin: 10px 0; }
.wk-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 6px 0 10px; }
.wk-col { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; }
.wk-col.accentbox { background: var(--grad-soft); border-color: var(--line-strong); }
.wk-lab { font: 700 0.72rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase; color: var(--blue); margin-bottom: 6px; }
.wk-col.accentbox .wk-lab { color: var(--magenta); }
.wk-col ul { margin: 0; font-size: 0.88rem; color: var(--text-dim); }
.wk-foot { display: grid; gap: 6px; font-size: 0.9rem; color: var(--text-dim); }
.wk-foot strong { color: var(--text); font-family: var(--font-head); font-size: 0.74rem; letter-spacing: 0.06em;
  text-transform: uppercase; margin-right: 6px; }
.tools { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.tool { font-size: 0.74rem; padding: 4px 9px; border-radius: 6px; background: var(--surface-2);
  border: 1px solid var(--line); color: var(--text-mute); }

/* ---------- timeline dots ---------- */
.tl-dot { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--grad); color: #fff;
  display: grid; place-items: center; font: 700 0.85rem var(--font-head); box-shadow: 0 0 0 4px var(--bg); }

/* ---------- THEMES (Arxada default, plus Light + Midnight) ---------- */
[data-theme="light"] {
  --bg: #EEF3FB; --bg-2: #FFFFFF; --surface: #FFFFFF; --surface-2: #F1F5FC;
  --line: rgba(12,40,90,0.12); --line-strong: rgba(12,40,90,0.24);
  --text: #0C1A33; --text-dim: #41506B; --text-mute: #7385A3;
  --grad-soft: linear-gradient(120deg, rgba(30,139,255,0.10), rgba(255,46,146,0.08));
  --shadow: 0 18px 46px rgba(20,50,100,0.16);
}
[data-theme="midnight"] {
  --bg: #070710; --bg-2: #0E0E18; --surface: #15151F; --surface-2: #1D1D2A;
  --line: rgba(255,255,255,0.10); --line-strong: rgba(255,255,255,0.18);
  --text: #ECECF4; --text-dim: #A6A6C0; --text-mute: #74748F;
  --shadow: 0 18px 50px rgba(0,0,0,0.5);
}

/* ---------- theme switch ---------- */
.theme-switch { display: inline-flex; align-items: center; gap: 4px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 999px; padding: 4px; }
.ts-lab { font-size: 0.7rem; color: var(--text-mute); padding: 0 8px; text-transform: uppercase; letter-spacing: 0.1em; }
.ts-btn { border: none; background: none; color: var(--text-dim); font: 600 0.8rem var(--font-body);
  padding: 6px 13px; border-radius: 999px; cursor: pointer; transition: all 0.15s ease; }
.ts-btn:hover { color: var(--text); }
.ts-btn.on { background: var(--grad); color: #fff; }

/* ---------- approach detail ---------- */
/* nests the bullets clearly under the header text (accordion body padding is 18px,
   list markers render ~1em to the left, so we pad well past that) */
.ap-detail { margin: 12px 0 6px; padding-left: 44px; font-size: 0.92rem; color: var(--text-dim); }
.ap-detail li { margin: 0.42em 0; padding-left: 0.25em; }
.ap-detail li::marker { color: var(--blue); }

/* ---------- cadence visual ---------- */
.cadence { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 20px; }
.cad { flex: 1 1 92px; min-width: 92px; text-align: center; padding: 14px 8px; border-radius: var(--radius-sm);
  background: var(--surface); border: 1px solid var(--line); transition: transform 0.15s; }
.cad:hover { transform: translateY(-2px); }
.cad-live { background: var(--grad-soft); border-color: var(--line-strong); box-shadow: 0 0 0 1px rgba(30,139,255,0.25); }
.cad-wk { font-size: 0.68rem; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.06em; }
.cad-dot { font-size: 1.05rem; color: var(--blue); margin: 3px 0; }
.cad-live .cad-dot { color: var(--magenta); }
.cad-lab { font: 600 0.8rem var(--font-head); line-height: 1.15; }
.cad-type { font-size: 0.64rem; color: var(--text-mute); margin-top: 4px; }

/* ---------- objectives + key questions ---------- */
.obj-block { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 8px 0 18px; }
.obj-col { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 16px 18px; }
.obj-col.accentbox { background: var(--grad-soft); border-color: var(--line-strong); }
.obj-col p, .obj-col ul { margin: 0; }

/* ---------- signature live sessions ---------- */
.sess { background: var(--surface); border: 1px solid var(--line-strong); border-left: 4px solid var(--magenta);
  border-radius: var(--radius); padding: 22px 24px; margin: 6px 0 12px; }
.sess-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.sess-part { font: 700 0.72rem var(--font-head); letter-spacing: 0.1em; text-transform: uppercase; color: var(--magenta); }
.sess-mode { font-size: 0.72rem; color: var(--text-dim); background: var(--bg-2); border: 1px solid var(--line); padding: 4px 10px; border-radius: 999px; }
.sess-title { font-size: 1.4rem; margin: 8px 0 2px; background: var(--grad);
  -webkit-background-clip: text; background-clip: text; color: transparent; }
.sess-theme { color: var(--text-dim); font-weight: 600; }
.sess-focus { color: var(--text-dim); font-style: italic; margin: 6px 0 0; }

/* ---------- Upgrade University mini bands ---------- */
.uu-mini { background: var(--bg-2); border: 1px dashed var(--line-strong); border-radius: var(--radius-sm);
  padding: 14px 18px; margin: 0 0 12px 18px; }
.uu-mini-h { font-weight: 600; }
.uu-when { color: var(--text-mute); font-size: 0.8rem; margin-left: 6px; }
.uu-mini p { margin: 6px 0 0; color: var(--text-dim); font-size: 0.92rem; }

/* ---------- teaching modes ---------- */
.tm-block { margin: 18px 0; }
.tm-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.tm { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--blue);
  border-radius: var(--radius-sm); padding: 16px; }
.tm-h { font: 700 0.95rem var(--font-head); color: var(--blue); margin-bottom: 6px; }
.tm p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }

/* ---------- blueprint wrap-around (included / tools / docs) ---------- */
.meta-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-top: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.meta-col ul { font-size: 0.86rem; color: var(--text-dim); }
.meta-col.muted ul { color: var(--text-mute); }

/* ---------- hand-over box ---------- */
.handover { margin-top: 26px; padding: 24px; border-radius: var(--radius); background: var(--grad-soft); border: 1px solid var(--line-strong); }
.ho-list { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.ho-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 10px 16px; }
.ho-name { font-weight: 600; }
.ho-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ---------- calculator: per-function rows ---------- */
.calc-fn-list { display: flex; flex-direction: column; gap: 6px; }
.calc-fn { display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 6px 10px; border-radius: 8px; background: var(--bg-2); border: 1px solid var(--line); }
.calc-fn .chk { font-size: 0.9rem; }
.calc-fn-opts { display: flex; gap: 12px; flex: none; }
.calc-fn .inperson, .calc-fn .deepdive { font-size: 0.76rem; color: var(--text-dim); }
.calc-fn .inperson.off, .calc-fn .deepdive.off { opacity: 0.4; }

/* diagnostics versions */
.diag-versions { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.diag-version { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; }
.diag-version .dv-meta { font-size: 0.74rem; color: var(--magenta); }
.diag-version p { margin: 6px 0 0; color: var(--text-dim); font-size: 0.88rem; }

/* ---------- geography waves ---------- */
.waves { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.wave { display: flex; gap: 12px; align-items: baseline; }
.wave-w { flex: none; font: 700 0.74rem var(--font-head); letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--magenta); min-width: 64px; }

/* ---------- scope of work ---------- */
.sow-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.sow-col { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--blue);
  border-radius: var(--radius); padding: 18px 20px; }
.sow-col h4 { margin: 0 0 8px; font-size: 1rem; }
.sow-col ul { font-size: 0.88rem; color: var(--text-dim); margin: 0; }
.callout.muted .callout-h { color: var(--text-dim); }

/* ---------- multi-page nav ---------- */
.nav-n { display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--line); font: 700 0.7rem var(--font-head);
  color: var(--text-mute); margin-right: 8px; }
.toc-list > li > a { display: flex; align-items: center; }
.toc-list > li > a.active .nav-n { background: var(--grad); color: #fff; border-color: transparent; }

/* ---------- pager ---------- */
.pager { display: flex; justify-content: space-between; gap: 12px; margin: 44px 0 6px; }
.pager-btn { display: flex; flex-direction: column; gap: 2px; padding: 14px 20px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line-strong); min-width: 150px; transition: transform 0.15s, border-color 0.2s; }
.pager-btn:hover { transform: translateY(-2px); border-color: var(--blue); text-decoration: none; }
.pager-btn span { font-size: 0.72rem; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.08em; }
.pager-btn strong { font-family: var(--font-head); color: var(--text); }
.pager-btn.next { text-align: right; margin-left: auto; }

/* ---------- program elements + jump flash ---------- */
.prog-els { display: flex; flex-direction: column; gap: 14px; margin-top: 6px; }
.prog-el { scroll-margin-top: 16px; border-radius: var(--radius); }
.prog-el.flash-el { animation: flashEl 1s ease; }
@keyframes flashEl { 0% { box-shadow: 0 0 0 0 transparent; } 30% { box-shadow: 0 0 0 3px var(--blue); } 100% { box-shadow: 0 0 0 0 transparent; } }
.uu-full { background: var(--surface); border: 1px solid var(--line-strong); border-left: 4px solid var(--accent);
  border-radius: var(--radius); padding: 16px 20px; }
.uu-full .uu-mini-h { font-weight: 600; color: var(--text); }
.uu-frame { color: var(--text-dim); font-size: 0.9rem; margin: 8px 0 6px; }
.uu-eg { color: var(--text); margin: 0; }
.cad-uu { opacity: 0.92; }
.sess-dur { font-size: 0.82rem; color: var(--accent); font-weight: 600; margin-top: 2px; }

/* ---------- cadence: live sessions ranked above Upgrade University ---------- */
.cad { font: inherit; color: inherit; cursor: pointer; text-align: center; }
.cad-rank { font: 700 0.6rem var(--font-head); letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 2px; }
.cad-live { flex: 1.7 1 130px; box-shadow: 0 0 0 1px rgba(30,139,255,0.3); }
.cad-live .cad-rank { color: var(--magenta); }
.cad-live .cad-lab { font-size: 0.95rem; }
.cad-uu { flex: 0.85 1 80px; opacity: 0.8; }
.cad-uu .cad-lab { font-size: 0.74rem; color: var(--text-dim); }
.cad:hover { transform: translateY(-2px); border-color: var(--blue); }

/* ---------- function cards as links ---------- */
.fn-card { display: block; text-decoration: none; color: inherit; }
.fn-card:hover { text-decoration: none; }
.fn-sess { font: 600 0.78rem var(--font-head); color: var(--magenta); margin: 6px 0; }
.fn-open { display: inline-block; margin-top: 8px; color: var(--blue); font-weight: 600; font-size: 0.88rem; }

/* ---------- scenario note ---------- */
.scn-note { margin-top: 10px; font-size: 0.8rem; color: var(--text-mute); font-style: italic;
  border-top: 1px dashed var(--line); padding-top: 8px; }

/* ---------- sleek scrollbars ---------- */
.toc { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
.toc::-webkit-scrollbar, body::-webkit-scrollbar { width: 8px; height: 8px; }
.toc::-webkit-scrollbar-thumb, body::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 8px; }
.toc::-webkit-scrollbar-thumb:hover, body::-webkit-scrollbar-thumb:hover { background: var(--blue); }
.toc::-webkit-scrollbar-track, body::-webkit-scrollbar-track { background: transparent; }

/* =====================================================================
 * DESIGN REFINEMENTS ,  senior pass: rhythm, elevation, focus, polish
 * ===================================================================== */

/* Why Us: a clean 4-up row */
.why-grid { grid-template-columns: repeat(2, 1fr); }
.why { border-top: 3px solid transparent; border-image: var(--grad) 1; position: relative;
  transition: transform 0.18s ease, box-shadow 0.2s ease; }
.why:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.why h4 { letter-spacing: 0.04em; }

/* Hero: stronger presence + clear CTAs */
.hero { padding-top: 110px; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); letter-spacing: -0.02em; margin: 10px 0 20px; }
.hero-sub { font-size: 1.24rem; line-height: 1.5; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 4px; }
.btn-lg { padding: 14px 24px; font-size: 1rem; }
.btn-accent { box-shadow: 0 10px 30px rgba(30,139,255,0.35); }

/* Type rhythm */
.section { padding: 84px 8%; }
.section-title { font-size: clamp(1.8rem, 3.6vw, 2.7rem); letter-spacing: -0.015em; margin-bottom: 26px; }
.lead { font-size: 1.16rem; line-height: 1.6; }
.eyebrow { font-size: 0.8rem; }

/* Unified card elevation */
.card, .uc, .sow-col, .path-card, .tm, .fn-card, .stat {
  transition: transform 0.16s ease, box-shadow 0.2s ease, border-color 0.2s ease; }
.card:hover, .uc:hover, .sow-col:hover, .tm:hover { transform: translateY(-3px); box-shadow: var(--shadow); }

/* Nav: premium active state */
.toc-brand { font-size: 1.1rem; letter-spacing: -0.01em; }
.toc-list > li > a { padding: 8px 12px; border-radius: 9px; font-weight: 500; transition: background 0.15s, color 0.15s; }
.toc-list > li > a:hover { background: var(--surface); color: var(--text); }
.toc-list > li > a.active { background: var(--grad-soft); color: var(--text); }

/* Pager polish */
.pager-btn { box-shadow: 0 6px 20px rgba(0,8,30,0.18); }

/* Cadence: premium signature block */
.cad { border-radius: 14px; }
.cad-live { box-shadow: 0 8px 24px rgba(30,139,255,0.22), 0 0 0 1px rgba(30,139,255,0.35); }
.cad-dot { font-size: 1.2rem; }

/* Accessibility: visible focus */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* Selection */
::selection { background: var(--magenta); color: #fff; }

/* ---------- bios ---------- */
.bio-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 8px; }
.bio { display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 18px 20px; transition: transform 0.16s, box-shadow 0.2s, border-color 0.2s; }
.bio:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--blue); }
.bio-avatar { flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: var(--grad); color: #fff; font: 700 1rem var(--font-head); }
.bio-name { font: 700 1rem var(--font-head); }
.bio-role { color: var(--magenta); font-size: 0.8rem; margin-bottom: 6px; }
.bio-body p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }
.tt-lab { margin-top: 20px; }

/* ---------- scope to your budget (reverse calculator) ---------- */
.budget-scope { display: grid; grid-template-columns: 1fr 1.1fr; gap: 20px; margin-top: 10px; }
.bs-input { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; align-self: start; }
.bs-out { background: var(--grad-soft); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 22px; }
.bs-lines { margin: 8px 0; }
.bs-row { display: flex; justify-content: space-between; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 0.92rem; }
.bs-row span:first-child { color: var(--text-dim); }
.bs-row.on span:last-child { color: var(--text); font-weight: 600; }
.bs-row.off span:last-child { color: var(--text-mute); }

/* ---------- pager: refined (overrides earlier) ---------- */
.pager { margin: 56px 0 8px; padding-top: 24px; border-top: 1px solid var(--line); gap: 16px; }
.pager-btn { flex-direction: row; align-items: center; gap: 14px; background: transparent;
  border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; min-width: 0; box-shadow: none;
  max-width: 48%; }
.pager-btn .pager-arrow { flex: none; width: 38px; height: 38px; border-radius: 50%; display: grid; place-items: center;
  border: 1px solid var(--line-strong); color: var(--blue); font-size: 1.1rem; transition: all 0.18s ease; }
.pager-btn .pager-txt { display: flex; flex-direction: column; line-height: 1.2; min-width: 0; }
.pager-btn span { font-size: 0.7rem; }
.pager-btn strong { font-size: 1.02rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pager-btn:hover { border-color: var(--blue); transform: none; }
.pager-btn:hover .pager-arrow { background: var(--grad); color: #fff; border-color: transparent; }
.pager-btn.next { text-align: right; }
.pager-btn.next .pager-txt { align-items: flex-end; }

/* ---------- delivery options ---------- */
.delivery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 8px 0 22px; }
.delivery-opt { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--magenta);
  border-radius: var(--radius); padding: 16px 18px; }
.do-mode { font: 700 0.95rem var(--font-head); margin-bottom: 6px; }
.delivery-opt p { margin: 0; color: var(--text-dim); font-size: 0.9rem; }
@media (max-width: 900px) { .delivery-grid { grid-template-columns: 1fr; } .pager-btn { max-width: none; } }

/* ---------- calculator: help text + delivery + deep-dive ---------- */
.ctl-help { font-size: 0.84rem; color: var(--text-dim); margin: 0 0 12px; }
.calc-del { background: var(--bg-2); color: var(--text); border: 1px solid var(--line-strong); border-radius: 8px;
  font: 500 0.8rem var(--font-body); padding: 5px 8px; cursor: pointer; }
.calc-del:disabled { opacity: 0.4; }
.dd-block { margin-top: 12px; }
.dd-lab { font-size: 0.82rem; color: var(--text-dim); margin-bottom: 8px; }
.dd-list { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 14px; }
.dd-opt { font-size: 0.86rem; }
.dd-opt.off { opacity: 0.4; }

/* ---------- cost legend ---------- */
.legend { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lg-grp { background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px; }
.lg-h { font: 700 0.78rem var(--font-head); letter-spacing: 0.04em; text-transform: uppercase; color: var(--blue); margin-bottom: 8px; }
.lg-row { display: flex; justify-content: space-between; gap: 12px; font-size: 0.88rem; padding: 4px 0; border-bottom: 1px solid var(--line); }
.lg-row:last-child { border-bottom: none; }
.lg-row span:first-child { color: var(--text-dim); }
.lg-row span:last-child { color: var(--text); font-weight: 600; white-space: nowrap; }
.legend .muted.small { grid-column: 1 / -1; margin: 0; }
@media (max-width: 760px) { .legend, .dd-list { grid-template-columns: 1fr; } }

/* ---------- pricing version selector (drives both tools) ---------- */
.pv-select { margin: 20px 0 8px; }
.pv-internal { margin-top: 20px; }
.pv-internal .pv-select { margin: 0; }
.pv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 10px; }
.pv-opt { display: block; cursor: pointer; }
.pv-opt input { position: absolute; opacity: 0; pointer-events: none; }
.pv-card { display: flex; flex-direction: column; gap: 4px; height: 100%; padding: 14px 16px;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius);
  transition: border-color 0.15s, box-shadow 0.2s, transform 0.15s; }
.pv-opt:hover .pv-card { transform: translateY(-2px); }
.pv-opt input:checked + .pv-card { border-color: var(--magenta); background: var(--grad-soft); box-shadow: var(--shadow); }
.pv-name { font: 700 0.95rem var(--font-head); color: var(--magenta); }
.pv-label { font-weight: 600; color: var(--text); font-size: 0.92rem; }
.pv-tag { font-size: 0.8rem; color: var(--blue); font-weight: 600; }
.pv-desc { font-size: 0.82rem; color: var(--text-dim); margin-top: 2px; }
@media (max-width: 760px) { .pv-grid { grid-template-columns: 1fr; } }

/* ---------- two levels of diagnostics ---------- */
.diag-types { display: flex; flex-direction: column; gap: 14px; margin-top: 8px; }
.diag-type { background: var(--surface); border: 1px solid var(--line-strong); border-left: 4px solid var(--magenta);
  border-radius: var(--radius); padding: 18px 20px; }
.dt-lvl { font: 700 0.72rem var(--font-head); letter-spacing: 0.08em; text-transform: uppercase; color: var(--blue); margin-bottom: 6px; }
.dt-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.dt-name { font: 700 1.02rem var(--font-head); }
.dt-scope { font-size: 0.74rem; color: var(--magenta); white-space: nowrap; }
.diag-type p { color: var(--text-dim); }
.incl-base { display: flex; gap: 7px; align-items: center; font-size: 0.88rem; color: var(--text-dim); margin: 4px 0 10px; }
@media (max-width: 760px) { .diag-types { grid-template-columns: 1fr; } }

/* ---------- scenario note (top of the scenarios box) ---------- */
.scn-note { margin: 4px 0 10px; font-size: 0.8rem; color: var(--text-dim); background: var(--bg-2);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 11px; display: flex; gap: 7px; }
.scn-ico { color: var(--magenta); flex: none; }

/* ---------- internal back-calc box (remove before sending) ---------- */
.internal-box { margin-top: 18px; border: 2px dashed #ff3b3b; border-radius: 12px; padding: 14px 16px; background: rgba(255,59,59,0.07); }
.ib-h { color: #ff4d4d; font: 800 0.82rem var(--font-head); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 10px; }
.ib-row { display: flex; justify-content: space-between; gap: 12px; font-size: 0.86rem; padding: 4px 0; border-bottom: 1px solid rgba(255,59,59,0.18); }
.ib-row:last-child { border-bottom: none; }
.ib-row span:first-child { color: #ffb3b3; }
.ib-row span:last-child { color: #ff8a8a; font-weight: 600; white-space: nowrap; }

/* ---------- pricing visibility ---------- */
body.hide-pricing [data-pricing] { display: none !important; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .toc { position: static; width: auto; height: auto; flex-direction: row; align-items: center;
    overflow-x: auto; border-right: none; border-bottom: 1px solid var(--line); }
  .toc-list { flex-direction: row; align-items: center; }
  .toc-sub, .has-kids.open > .toc-sub { display: none; }   /* keep the mobile bar clean */
  .toc-top { flex: none; }
  .toc-resize, .nav-toggle, .nav-open-btn, .kid-toggle { display: none; }
  #app, .foot { margin-left: 0; }
  .builder { grid-template-columns: 1fr; }
  .card-grid.two { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2x2 { grid-template-columns: 1fr; }
  .uc-grid { grid-template-columns: 1fr; }
  .wk-cols { grid-template-columns: 1fr; }
  .obj-block { grid-template-columns: 1fr; }
  .tm-grid { grid-template-columns: 1fr; }
  .meta-grid { grid-template-columns: 1fr 1fr; }
  .sow-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .bio-grid { grid-template-columns: 1fr; }
  .budget-scope { grid-template-columns: 1fr; }
  .diag-versions { grid-template-columns: 1fr; }
  .calc-fn { flex-wrap: wrap; }
}
@media (max-width: 640px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .meta-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .section { padding: 50px 6%; }
  .chk-grid { grid-template-columns: 1fr; }
  .gate-card form { flex-direction: column; }
  .feature-card { flex-direction: column; align-items: flex-start; }
  .pager { flex-direction: column; }
  .pager-btn.next { text-align: left; }
  .why-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { text-align: center; }
}