/* ============================================================================
   TALYA SMART 2027 — DESIGN SYSTEM + STYLES
   Dark, editorial, technically credible. Mobile-first (~380px) → enhance up.
   ============================================================================ */

:root {
  --canvas: #0A0B0F;
  --panel: #13141A;
  --panel-2: #181A22;
  --text: #F2F3F5;
  --muted: #9AA0AA;
  --faint: #6B7280;
  --hairline: rgba(255, 255, 255, 0.08);
  --hairline-2: rgba(255, 255, 255, 0.14);
  --brand: #4A76F6;
  --brand-dark: #2E5CB8;
  --accent: #4A76F6;

  --font-display: "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --r: 0px;        /* sharp frames — brand-led, architectural */
  --r-sm: 2px;     /* tiny chrome that would look broken at 0 */

  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
button { font-family: inherit; color: inherit; cursor: pointer; }
::selection { background: color-mix(in oklab, var(--accent) 40%, transparent); }

.app { position: relative; min-height: 100vh; }

.ambient-canvas {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}

.mono { font-family: var(--font-mono); font-variant-ligatures: none; }
.accent-text { color: var(--accent); }
.hl-ai { color: #FACC15; }
.motto-yellow, .motto-yellow .motto-soft { color: #FACC15; }
.strong { font-weight: 700; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  border: 1px solid transparent; border-radius: var(--r);
  font-weight: 600; letter-spacing: -0.01em; text-decoration: none;
  transition: transform 0.18s var(--ease), background 0.2s, border-color 0.2s, box-shadow 0.25s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(0.99); }
.btn.sm { padding: 0.5rem 0.85rem; font-size: 0.82rem; }
.btn.lg { padding: 0.85rem 1.3rem; font-size: 0.98rem; }
.btn-primary {
  background: var(--accent); color: #08090c;
  box-shadow: 0 0 0 0 color-mix(in oklab, var(--accent) 60%, transparent);
}
.btn-primary:hover { background: color-mix(in oklab, var(--accent) 80%, #000); box-shadow: 0 10px 34px -8px color-mix(in oklab, var(--accent) 80%, transparent); transform: translateY(-2px); }
.btn-ghost { background: rgba(255, 255, 255, 0.03); border-color: var(--hairline-2); color: var(--text); }
.btn-ghost:hover { border-color: color-mix(in oklab, var(--accent) 60%, var(--hairline-2)); color: #fff; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 0; }

/* ---------- TS lockup ---------- */
.ts-lockup {
  display: inline-flex; align-items: center; gap: 0.55rem;
  background: none; border: 0; padding: 0; cursor: pointer;
}
.ts-wordmark-img { display: block; width: auto; opacity: 0.96; transition: opacity 0.2s; }
.ts-lockup.wordmark:hover .ts-wordmark-img { opacity: 1; }
.ts-mark {
  display: grid; place-items: center; flex: none;
  background: transparent;
  transition: opacity 0.3s, transform 0.3s var(--ease);
}
.ts-mark-img { width: 100%; height: 100%; object-fit: contain; display: block; }
.ts-lockup:hover .ts-mark { transform: scale(1.06); }
.ts-lockup.lockup { gap: 0.5rem; }
.ts-lockup-text { font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; letter-spacing: -0.025em; color: var(--text); white-space: nowrap; }

/* ---------- chips ---------- */
.chip {
  display: inline-flex; align-items: center; gap: 0.4em;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.02em;
  padding: 0.3rem 0.6rem; border-radius: var(--r-sm);
  border: 1px solid color-mix(in oklab, var(--chip, var(--accent)) 45%, var(--hairline));
  color: var(--chip, var(--accent));
  background: color-mix(in oklab, var(--chip, var(--accent)) 10%, transparent);
}
.chip.solid { background: var(--chip, var(--accent)); color: #08090c; border-color: transparent; font-weight: 600; }

/* ============================================================================
   ENTRY
   ============================================================================ */
.entry { position: relative; z-index: 2; min-height: 100svh; display: flex; flex-direction: column; }
.entry-top { padding: 1.1rem 1.2rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.team-badge { display: flex; align-items: baseline; gap: 0.4rem; flex-wrap: wrap; justify-content: flex-end; }
.team-badge-num { font-family: var(--font-display); font-weight: 800; font-size: 0.95rem; color: var(--accent); letter-spacing: -0.02em; }
.team-badge-label { font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.team-badge-div { width: 1px; height: 14px; background: var(--hairline-2); margin: 0 0.4rem; align-self: center; }

.entry-foot { padding: 1rem 1.2rem 1.6rem; display: flex; flex-direction: column; gap: 0.7rem; align-items: flex-start; }
.funny-btn {
  background: rgba(255,255,255,0.03); border: 1px dashed var(--hairline-2); color: var(--muted);
  font-family: var(--font-body); font-weight: 500; font-size: 0.86rem; padding: 0.6rem 1rem;
  border-radius: var(--r); transition: color .2s, background .25s, border-color .2s, transform .25s var(--ease), box-shadow .3s, letter-spacing .2s; cursor: pointer;
}
.funny-btn:hover {
  color: #08090c; border-color: var(--accent); border-style: solid;
  background: var(--accent); transform: translateY(-4px) scale(1.04) rotate(-1deg);
  box-shadow: 0 20px 50px -14px color-mix(in oklab, var(--accent) 85%, transparent); letter-spacing: 0.01em; font-weight: 700;
}
.funny-btn:active { transform: translateY(-1px) scale(1.0); }
.contact-pop {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem 1rem; padding: 0.9rem 1.1rem;
  border: 1px solid var(--hairline); background: var(--panel); border-radius: var(--r);
  animation: fadeRise 0.4s var(--ease);
}
.contact-pop-quip { font-family: var(--font-display); font-weight: 600; color: #fff; font-size: 0.95rem; }
.contact-pop-mail { color: var(--accent); text-decoration: none; font-size: 0.82rem; }
.contact-pop-mail:hover { text-decoration: underline; }
.contact-pop-loc, .contact-pop-tel { color: var(--muted); font-size: 0.78rem; }
.contact-pop-addr { color: var(--muted); font-size: 0.78rem; width: 100%; }
.entry-inner {
  flex: 1; width: 100%; max-width: var(--maxw); margin: 0 auto;
  padding: 0.5rem 1.2rem 1.5rem; display: flex; flex-direction: column; justify-content: center;
}

.eyebrow {
  font-family: var(--font-mono); font-size: 0.61rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 1.1rem;
}
.headline {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.95rem, 9.35vw, 4.76rem); line-height: 0.98;
  letter-spacing: -0.035em; margin: 0; text-wrap: balance;
}
.headline span { display: block; }
.headline.sub { font-size: clamp(1.7rem, 7.65vw, 3.4rem); }
.motto {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(0.94rem, 3.83vw, 1.45rem); letter-spacing: -0.02em;
  margin: 1.3rem 0 0; color: #fff;
}
.motto.small { font-family: var(--font-body); font-weight: 400; font-size: clamp(0.81rem, 3.06vw, 0.98rem); color: var(--muted); max-width: 40ch; }
.motto-soft { color: var(--muted); }

/* headline mask-wipe reveal */
.mask-line { opacity: 0; transform: translateY(0.5em); clip-path: inset(0 0 105% 0); }
.entry-loaded .mask-line {
  opacity: 1; transform: none; clip-path: inset(-10% 0 -10% 0);
  transition: clip-path 0.8s var(--ease), opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.entry-loaded .ml-0 { transition-delay: 0.05s; }
.entry-loaded .ml-1 { transition-delay: 0.16s; }
.entry-loaded .ml-2 { transition-delay: 0.28s; }
.entry-loaded .ml-3 { transition-delay: 0.4s; }
.entry-loaded .ml-4 { transition-delay: 0.58s; }
.entry-loaded .ml-5 { transition-delay: 0.74s; }

.headline-wrap.step2 { display: flex; flex-direction: column; }
.back-link {
  align-self: flex-start; background: none; border: 1px solid var(--hairline);
  border-radius: var(--r); padding: 0.4rem 0.85rem; color: var(--muted);
  font-size: 0.8rem; margin-bottom: 1.2rem; transition: border-color 0.2s, color 0.2s;
}
.back-link:hover { color: #fff; border-color: var(--hairline-2); }

.fade-rise { opacity: 0; transform: translateY(14px); animation: fadeRise 0.6s var(--ease) forwards; }
.fade-rise.d1 { animation-delay: 0.1s; }
@keyframes fadeRise { to { opacity: 1; transform: none; } }

/* ---------- question block ---------- */
.q-block { margin-top: clamp(1.4rem, 5vw, 2.6rem); }
.q-label {
  display: flex; align-items: baseline; gap: 0.7rem;
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(0.89rem, 3.57vw, 1.28rem); letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
}
.q-step { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); }

.tile-grid { display: grid; gap: 0.6rem; grid-template-columns: 1fr 1fr; }
/* problem + pain tiles use the yellow diagnosis accent; lab tiles preview their industry color */
.tile-grid.problems, .tile-grid.pains { --accent: #FACC15; }
.tile {
  position: relative; display: flex; align-items: center; justify-content: space-between; gap: 0.5rem;
  min-height: 66px; padding: 0.9rem 1rem 0.9rem 1.1rem; text-align: left; overflow: hidden;
  background: rgba(255, 255, 255, 0.025); border: 1px solid var(--hairline);
  border-radius: var(--r); color: var(--text);
  transition: transform 0.22s var(--ease), border-color 0.25s, background 0.25s, box-shadow 0.3s;
}
/* growing left accent bar */
.tile::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px;
  background: var(--accent); transform: scaleY(0); transform-origin: top;
  box-shadow: 0 0 16px -2px var(--accent);
  transition: transform 0.32s var(--ease);
}
/* accent sweep fill */
.tile::after {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 30%, transparent), color-mix(in oklab, var(--accent) 9%, transparent));
  transform: translateX(-101%); transition: transform 0.4s var(--ease);
}
.tile > * { position: relative; z-index: 1; }
.tile-name { font-family: var(--font-display); font-weight: 600; font-size: 1.02rem; letter-spacing: -0.02em; transition: transform 0.28s var(--ease), color 0.2s; }
.tile-arrow { color: var(--faint); transition: transform 0.28s var(--ease), color 0.25s; }
.tile:hover, .tile:focus-visible {
  border-color: var(--accent);
  transform: translateY(-5px) scale(1.015);
  box-shadow: 0 28px 72px -18px color-mix(in oklab, var(--accent) 92%, transparent),
              0 0 0 1px color-mix(in oklab, var(--accent) 60%, transparent),
              inset 0 0 34px -12px color-mix(in oklab, var(--accent) 55%, transparent);
}
.tile:hover::before, .tile:focus-visible::before { transform: scaleY(1); }
.tile:hover::after, .tile:focus-visible::after { transform: translateX(0); }
.tile:hover .tile-name, .tile:focus-visible .tile-name { transform: translateX(6px); color: #fff; }
.tile:hover .tile-arrow, .tile:focus-visible .tile-arrow { transform: translateX(7px) scale(1.18); color: var(--accent); }
.tile-active { border-color: var(--accent); }
.tile-active::after { transform: translateX(0); }
.tile-active::before { transform: scaleY(1); }

/* lab tiles */
.lab-tile { --accent: var(--accent); }
.lab-dot {
  width: 9px; height: 9px; border-radius: 50%; flex: none;
  background: var(--accent); box-shadow: 0 0 12px var(--accent);
}
.lab-text { display: flex; flex-direction: column; flex: 1; gap: 0.1rem; }
.lab-sub { font-size: 0.72rem; color: var(--muted); font-family: var(--font-mono); letter-spacing: 0.01em; }

/* ---------- pain tiles (operator signals, multi-select) ---------- */
.tile-grid.pains { grid-template-columns: 1fr; }
.pain-tile { align-items: flex-start; justify-content: flex-start; min-height: 0; padding: 0.85rem 1rem; gap: 0.8rem; }
.pain-check {
  width: 26px; height: 26px; flex: none; border-radius: var(--r-sm);
  border: 1px solid var(--hairline-2); display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 700; color: var(--faint);
  transition: background 0.2s, border-color 0.2s, color 0.2s; margin-top: 0.1rem;
}
.pain-on .pain-check { background: var(--accent); border-color: var(--accent); color: #08090c; }
.pain-text { display: flex; flex-direction: column; gap: 0.2rem; }
.pain-tile .tile-name { font-size: 0.98rem; }
.pain-copy { font-size: 0.82rem; color: var(--muted); text-wrap: pretty; }
.pain-on { border-color: var(--accent); }
.pain-on::after { transform: translateX(0); }
.pain-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.6rem 1rem; margin-top: 1.4rem; }
.skip-link { background: none; border: 0; color: var(--muted); font-size: 0.86rem; padding: 0.6rem 0.4rem; cursor: pointer; transition: color 0.2s; }
.skip-link:hover { color: #fff; text-decoration: underline; }
.btn:disabled { opacity: 0.38; cursor: not-allowed; pointer-events: none; }
.q-step.pain-step { color: var(--accent); }
@media (min-width: 600px) { .tile-grid.pains { grid-template-columns: 1fr 1fr; } }

/* cascade entrance */
.cascade { opacity: 0; transform: translateY(16px) scale(0.98); }
.entry-loaded .cascade {
  animation: cascadeIn 0.55s var(--ease) forwards;
  animation-delay: calc(0.85s + var(--i) * 0.05s);
}
.tile-grid.labs .cascade,
.tile-grid.pains .cascade { animation-delay: calc(0.05s + var(--i) * 0.05s); }
@keyframes cascadeIn { to { opacity: 1; transform: none; } }

/* ============================================================================
   REBUILD OVERLAY
   ============================================================================ */
.rebuild-overlay {
  position: fixed; inset: 0; z-index: 50; pointer-events: none;
  background: radial-gradient(circle at 50% 50%, color-mix(in oklab, var(--accent) 18%, var(--canvas)) 0%, var(--canvas) 70%);
  animation: rebuildFade 0.76s var(--ease) forwards;
}
.rebuild-sweep {
  position: absolute; inset: 0;
  background: linear-gradient(100deg, transparent 38%, color-mix(in oklab, var(--accent) 65%, transparent) 50%, transparent 62%);
  transform: translateX(-100%);
  animation: sweep 0.76s var(--ease);
}
.rebuild-grid {
  position: absolute; inset: 0; opacity: 0.5;
  background-image: linear-gradient(color-mix(in oklab, var(--accent) 30%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--accent) 30%, transparent) 1px, transparent 1px);
  background-size: 38px 38px; mask-image: radial-gradient(circle at center, black, transparent 70%);
  animation: gridPulse 0.76s var(--ease);
}
.rebuild-label {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.85rem; letter-spacing: 0.08em; text-transform: uppercase; color: #fff;
}
.rb-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 14px var(--accent); animation: blink 0.4s steps(2) infinite; }
@keyframes sweep { to { transform: translateX(100%); } }
@keyframes gridPulse { 0% { opacity: 0; } 40% { opacity: 0.6; } 100% { opacity: 0; } }
@keyframes rebuildFade { 0% { opacity: 0; } 18% { opacity: 1; } 80% { opacity: 1; } 100% { opacity: 0; } }
@keyframes blink { to { opacity: 0.2; } }
.accent-flash { position: fixed; inset: 0; pointer-events: none; z-index: 1; }

/* ============================================================================
   LANDING
   ============================================================================ */
.landing { position: relative; z-index: 2; }

.topnav {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  padding: 0.7rem 1.1rem; transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.topnav.is-scrolled {
  background: color-mix(in oklab, var(--canvas) 78%, transparent);
  backdrop-filter: blur(14px); border-bottom-color: var(--hairline);
}
.topnav-labnav { display: none; gap: 0.3rem; }
.topnav-right { display: flex; align-items: center; gap: 0.4rem; }
.topnav-link {
  background: none; border: 0; color: var(--muted); font-size: 0.85rem; font-weight: 500;
  padding: 0.45rem 0.6rem; border-radius: var(--r-sm); position: relative; transition: color 0.2s;
}
.topnav-link:hover { color: #fff; }
.topnav-link.global { display: none; }

/* expandable "Explore" menu trigger */
.nav-explore {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.04); border: 1px solid var(--hairline-2);
  color: var(--text); font-size: 0.82rem; font-weight: 600;
  padding: 0.42rem 0.7rem 0.42rem 0.6rem; border-radius: var(--r-sm);
  cursor: pointer; transition: all 0.2s;
}
.nav-explore:hover { border-color: var(--accent); color: #fff; }
.nav-explore.on { background: var(--accent); border-color: transparent; color: #08090c; }
.nav-explore-bars { display: inline-flex; flex-direction: column; gap: 3px; width: 15px; }
.nav-explore-bars span { display: block; height: 2px; border-radius: 2px; background: currentColor; transition: all 0.25s; }
.nav-explore.on .nav-explore-bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
.nav-explore.on .nav-explore-bars span:nth-child(2) { opacity: 0; }
.nav-explore.on .nav-explore-bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
.nav-explore-label { white-space: nowrap; }

.nav-menu-scrim { position: fixed; inset: 0; z-index: 28; background: rgba(6,7,11,0.5); backdrop-filter: blur(2px); animation: navScrimIn 0.2s ease; }
@keyframes navScrimIn { from { opacity: 0; } to { opacity: 1; } }
.nav-menu {
  position: fixed; top: 64px; left: 50%; transform: translateX(-50%); z-index: 31;
  width: min(960px, calc(100vw - 1.5rem));
  background: color-mix(in oklab, var(--panel) 96%, #000); border: 1px solid var(--hairline-2);
  border-radius: var(--r); box-shadow: 0 24px 60px -20px rgba(0,0,0,0.7);
  animation: navMenuIn 0.22s cubic-bezier(0.2,0.8,0.2,1); overflow: hidden;
}
@keyframes navMenuIn { from { opacity: 0; transform: translateX(-50%) translateY(-8px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }
.nav-menu-inner { display: grid; grid-template-columns: 1fr; gap: 0.4rem 1.4rem; padding: 1.1rem; }
.nav-menu-group { display: block; font-size: 0.6rem; letter-spacing: 0.14em; color: var(--faint); margin: 0.2rem 0 0.5rem; }
.nav-menu-col + .nav-menu-col { padding-top: 0.6rem; border-top: 1px solid var(--hairline); margin-top: 0.4rem; }
.nav-menu-item {
  display: flex; align-items: baseline; gap: 0.6rem; width: 100%; text-align: left;
  background: none; border: 0; color: var(--text); cursor: pointer;
  padding: 0.55rem 0.6rem; border-radius: var(--r-sm); transition: background 0.18s;
}
.nav-menu-item:hover { background: rgba(255,255,255,0.05); }
.nav-menu-item-label { font-weight: 600; font-size: 0.95rem; }
.nav-menu-item-note { flex: 1; color: var(--muted); font-size: 0.78rem; }
.nav-menu-item-arrow { color: var(--accent); opacity: 0; transform: translateX(-4px); transition: all 0.18s; }
.nav-menu-item:hover .nav-menu-item-arrow { opacity: 1; transform: translateX(0); }
.nav-menu-actions { display: flex; flex-direction: column; gap: 0.4rem; }
.nav-menu-action {
  display: inline-flex; align-items: center; gap: 0.5rem; text-decoration: none;
  background: rgba(255,255,255,0.04); border: 1px solid var(--hairline-2); color: var(--text);
  font-size: 0.85rem; font-weight: 600; padding: 0.6rem 0.8rem; border-radius: var(--r-sm);
  cursor: pointer; transition: all 0.18s;
}
.nav-menu-action:hover { border-color: var(--accent); color: #fff; }
.nav-menu-action.primary { background: var(--accent); border-color: transparent; color: #08090c; justify-content: center; }
@media (min-width: 760px) {
  .nav-menu-inner { grid-template-columns: 1fr 1fr 0.9fr; }
  .nav-menu-col + .nav-menu-col { padding-top: 0; border-top: 0; margin-top: 0; }
}

/* OS hero */
.os-hero {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(2rem, 8vw, 4.5rem) 1.2rem clamp(2.5rem, 6vw, 4rem);
  display: grid; gap: 2rem; grid-template-columns: 1fr;
}
.os-chip-row { display: flex; flex-wrap: wrap; align-items: center; gap: 0.7rem; }
.os-chip { font-size: 0.78rem; }
.os-lab-name { font-size: 0.72rem; color: var(--muted); letter-spacing: 0.04em; }
.os-headline {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2rem, 8.5vw, 4.4rem); line-height: 1.0;
  letter-spacing: -0.035em; margin: 1.2rem 0 0; text-wrap: balance;
}
.os-vision { font-size: clamp(1.02rem, 3.8vw, 1.35rem); color: var(--muted); margin: 1.2rem 0 0; max-width: 32ch; }
.os-pain { display: flex; flex-direction: column; gap: 0.35rem; margin: 1.3rem 0 0; padding-left: 0.9rem; border-left: 2px solid var(--accent); }
.os-pain-quote { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.05rem, 4vw, 1.4rem); color: #fff; letter-spacing: -0.01em; text-wrap: pretty; }
.os-pain-tag { font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }
.os-cta { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.8rem; }
.os-exemplars { margin-top: 2rem; display: flex; flex-direction: column; gap: 0.35rem; }
.os-exemplars-label { font-size: 0.66rem; letter-spacing: 0.14em; color: var(--faint); }
.os-exemplars-list { font-family: var(--font-mono); font-size: 0.84rem; color: var(--text); }

/* hero visual */
.os-hero-visual { position: relative; min-height: 220px; overflow: hidden; }
.hero-visual { position: relative; width: 100%; height: 100%; min-height: 220px; display: grid; place-items: center; }
.hv-svg { width: 100%; max-width: 420px; overflow: visible; }
.hv-link { stroke: color-mix(in oklab, var(--accent) 55%, transparent); stroke-width: 0.4; stroke-dasharray: 60; stroke-dashoffset: 60; animation: drawLink 1s var(--ease) forwards; animation-delay: var(--d); }
.hv-node { fill: color-mix(in oklab, var(--accent) 80%, white); opacity: 0; animation: nodeIn 0.5s var(--ease) forwards, nodePulse 3.2s ease-in-out infinite; animation-delay: var(--d), calc(var(--d) + 1s); }
.hv-node.core { fill: var(--accent); filter: drop-shadow(0 0 8px var(--accent)); }
.hv-grid {
  position: absolute; inset: -10%; z-index: -1; opacity: 0.4;
  background-image: radial-gradient(color-mix(in oklab, var(--accent) 35%, transparent) 1px, transparent 1px);
  background-size: 26px 26px; mask-image: radial-gradient(circle at center, black, transparent 65%);
}
@keyframes drawLink { to { stroke-dashoffset: 0; } }
@keyframes nodeIn { to { opacity: 1; } }
@keyframes nodePulse { 0%, 100% { r: inherit; } 50% { opacity: 0.6; } }

.reveal-now { opacity: 0; transform: translateY(18px); animation: fadeRise 0.7s var(--ease) forwards; }
.reveal-now.d0 { animation-delay: 0.02s; }
.reveal-now.d1 { animation-delay: 0.12s; }
.reveal-now.d2 { animation-delay: 0.22s; }
.reveal-now.d3 { animation-delay: 0.34s; }
.reveal-now.d4 { animation-delay: 0.46s; }

/* ---------- generic section ---------- */
.section { max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem, 9vw, 6rem) 1.2rem; }
.section-head { max-width: 44ch; margin-bottom: 2.2rem; }
.kicker {
  display: inline-block; font-family: var(--font-mono); font-size: 0.72rem;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.9rem;
}
.section-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.7rem, 6.5vw, 3rem); line-height: 1.02; letter-spacing: -0.03em; margin: 0;
}
.section-lede { font-size: clamp(1rem, 3.6vw, 1.18rem); color: var(--muted); margin: 1rem 0 0; }

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- solutions ---------- */
.sol-grid { display: grid; gap: 0.8rem; grid-template-columns: 1fr; }
.sol-card {
  position: relative; padding: 1.5rem 1.3rem 1.6rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.01));
  border: 1px solid var(--hairline); border-radius: var(--r); overflow: hidden;
  transition: border-color 0.3s, transform 0.3s var(--ease), background 0.3s;
}
.sol-card::before {
  content: ""; position: absolute; left: 0; top: 0; width: 100%; height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent); opacity: 0; transition: opacity 0.3s;
}
.sol-card:hover { border-color: color-mix(in oklab, var(--accent) 45%, var(--hairline)); transform: translateY(-3px); }
.sol-card:hover::before { opacity: 1; }
.sol-num { font-size: 0.78rem; color: var(--accent); }
.sol-name { font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; letter-spacing: -0.02em; margin: 0.5rem 0 0.5rem; }
.sol-desc { color: var(--muted); margin: 0; font-size: 0.96rem; }
.sol-arrow { position: absolute; right: 1.3rem; bottom: 1.3rem; color: var(--faint); transition: transform 0.25s, color 0.25s; }
.sol-card:hover .sol-arrow { color: var(--accent); transform: translate(3px, -3px); }
.sol-elevated { border-color: color-mix(in oklab, var(--accent) 55%, var(--hairline)); background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 8%, transparent), rgba(255,255,255,0.01)); }
.sol-elevated-tag { display: inline-block; font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.3rem; }
.built-on { margin-top: 1rem; padding-top: 0.8rem; border-top: 1px solid var(--hairline); }
.built-on-label { display: block; font-size: 0.6rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); margin-bottom: 0.4rem; }
.built-on-list { display: flex; flex-direction: column; gap: 0.3rem; }
.built-on-item { display: flex; align-items: center; gap: 0.45rem; font-size: 0.78rem; color: var(--muted); }
.bo-dot { width: 6px; height: 6px; border-radius: 50%; flex: none; }
.sol-flash {
  border-color: var(--accent) !important;
  animation: solFlash 1.3s var(--ease);
}
@keyframes solFlash {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  18% { box-shadow: 0 0 0 2px var(--accent), 0 20px 60px -18px color-mix(in oklab, var(--accent) 80%, transparent); transform: translateY(-4px); }
}

/* ============================================================================
   DO NOTHING
   ============================================================================ */
.donothing { }
.dn-grid { display: grid; gap: 1.6rem; grid-template-columns: 1fr; }
.dn-chart { position: relative; padding: 0.5rem 0 1.4rem 1.4rem; }
.dn-svg { width: 100%; height: clamp(180px, 40vw, 240px); display: block; }
.dn-grid-line { stroke: var(--hairline); stroke-width: 1; }
.dn-area { opacity: 0; transition: opacity 0.8s var(--ease) 0.3s; }
.dn-area.in { opacity: 1; }
.dn-curve {
  stroke: var(--accent); stroke-width: 3; stroke-linecap: round;
  stroke-dasharray: 1400; stroke-dashoffset: 1400;
  filter: drop-shadow(0 4px 16px color-mix(in oklab, var(--accent) 60%, transparent));
}
.dn-curve.in { transition: stroke-dashoffset 1.8s var(--ease) 0.2s; stroke-dashoffset: 0; }
.dn-pt { fill: var(--canvas); stroke: var(--accent); stroke-width: 2.5; opacity: 0; transform: scale(0); transform-origin: center; transition: opacity 0.4s, transform 0.4s var(--ease); }
.dn-pt.in { opacity: 1; transform: scale(1); }
.dn-axis-y { position: absolute; left: -0.2rem; top: 50%; transform: rotate(-90deg) translateX(50%); transform-origin: left; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }
.dn-axis-x { position: absolute; right: 0; bottom: 0; font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--faint); }

.dn-stages { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.7rem; }
.dn-stage {
  display: flex; gap: 0.9rem; align-items: flex-start; padding: 0.9rem 1rem;
  border: 1px solid var(--hairline); border-radius: var(--r); background: rgba(255, 255, 255, 0.02);
  opacity: 0; transform: translateX(-12px); transition: opacity 0.5s var(--ease), transform 0.5s var(--ease), border-color 0.4s;
}
.dn-stage.in { opacity: 1; transform: none; }
.dn-stage.terminal.in { border-color: color-mix(in oklab, var(--accent) 50%, var(--hairline)); background: color-mix(in oklab, var(--accent) 9%, transparent); }
.dn-year { color: var(--accent); font-size: 0.85rem; font-weight: 600; padding-top: 0.1rem; min-width: 3.2ch; }
.dn-stage-title { font-size: 0.98rem; color: var(--text); }
.dn-stage.terminal .dn-stage-title { font-weight: 600; }

/* ============================================================================
   SIMULATOR
   ============================================================================ */
.sim-inputs { display: grid; gap: 1rem; margin-bottom: 2rem; }
.sim-input-row { display: flex; flex-direction: column; gap: 0.55rem; }
.sim-input-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.sim-chips { display: flex; gap: 0.5rem; }
.seg { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.seg-btn {
  flex: 1 1 auto; min-width: 64px; min-height: 44px; padding: 0.5rem 0.6rem;
  background: rgba(255, 255, 255, 0.03); border: 1px solid var(--hairline); border-radius: var(--r);
  color: var(--muted); font-family: var(--font-mono); font-size: 0.85rem; transition: all 0.2s;
}
.seg-btn:hover { color: #fff; border-color: var(--hairline-2); }
.seg-btn.on { background: color-mix(in oklab, var(--accent) 16%, transparent); border-color: var(--accent); color: #fff; }

/* timeline slider */
.sim-timeline { margin: 0 0 2.2rem; }
.year-slider {
  -webkit-appearance: none; appearance: none; width: 100%; height: 6px; border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) var(--pct), var(--hairline-2) var(--pct));
  outline-offset: 6px;
}
.year-slider::-webkit-slider-thumb {
  -webkit-appearance: none; width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); border: 4px solid var(--canvas);
  box-shadow: 0 0 0 1px var(--accent), 0 6px 20px -4px var(--accent); cursor: grab;
}
.year-slider::-moz-range-thumb {
  width: 26px; height: 26px; border-radius: 50%; background: var(--accent);
  border: 4px solid var(--canvas); box-shadow: 0 0 0 1px var(--accent); cursor: grab;
}
.year-marks { display: flex; justify-content: space-between; margin-top: 0.8rem; }
.year-mark {
  background: none; border: 0; font-family: var(--font-mono); font-size: 0.9rem;
  color: var(--faint); padding: 0.2rem 0.3rem; transition: color 0.2s, transform 0.2s;
}
.year-mark.on { color: var(--accent); transform: scale(1.12); font-weight: 600; }

/* stat cards */
.sim-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 0.7rem; margin-bottom: 1.6rem; }
.sim-stat {
  padding: 1.1rem 1rem; border: 1px solid var(--hairline); border-radius: var(--r);
  background: rgba(255, 255, 255, 0.02);
}
.sim-stat.accent { border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline)); background: color-mix(in oklab, var(--accent) 8%, transparent); }
.sim-stat-label { font-size: 0.64rem; letter-spacing: 0.1em; color: var(--muted); }
.sim-stat-value { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.5rem, 7vw, 2.1rem); letter-spacing: -0.03em; margin: 0.3rem 0 0.15rem; }
.sim-stat.accent .sim-stat-value { color: var(--accent); }
.sim-stat-sub { font-size: 0.74rem; color: var(--faint); }

/* org chart + report */
.sim-body { display: grid; gap: 1rem; grid-template-columns: 1fr; }
.panel { border: 1px solid var(--hairline); border-radius: var(--r); background: var(--panel); padding: 1.3rem; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.1rem; }
.panel-title { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; letter-spacing: -0.01em; }
.panel-year { font-size: 0.78rem; color: var(--accent); }

.orgchart { display: grid; gap: 0.6rem; }
.org-row { display: grid; grid-template-columns: 8.5rem 1fr 2.2rem; align-items: center; gap: 0.6rem; transition: opacity 0.4s; }
.org-row.off { opacity: 0.28; }
.org-name { font-size: 0.8rem; color: var(--muted); }
.org-bar-track { height: 12px; background: rgba(255, 255, 255, 0.04); border-radius: 999px; overflow: hidden; }
.org-bar { height: 100%; border-radius: 999px; background: color-mix(in oklab, var(--text) 30%, transparent); transition: width 0.6s var(--ease), background 0.4s; }
.org-row.emerging .org-bar { background: var(--accent); box-shadow: 0 0 12px -2px var(--accent); }
.org-row.emerging .org-name { color: var(--accent); }
.org-count { font-size: 0.82rem; text-align: right; color: var(--text); }
.org-note { font-size: 0.82rem; color: var(--faint); margin: 1.1rem 0 0; }

.report-rows { display: grid; gap: 0.5rem; margin-bottom: 1.4rem; }
.report-row { display: flex; align-items: baseline; justify-content: space-between; gap: 0.8rem; padding: 0.7rem 0.9rem; border: 1px solid var(--hairline); border-radius: var(--r); }
.report-row.accent { border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline)); background: color-mix(in oklab, var(--accent) 7%, transparent); }
.report-k { font-size: 0.85rem; color: var(--muted); }
.report-v { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; text-align: right; letter-spacing: -0.01em; }
.report-row.accent .report-v { color: var(--accent); }
.report-v-sub { display: block; font-family: var(--font-mono); font-weight: 400; font-size: 0.68rem; color: var(--faint); letter-spacing: 0; }
.report-sub-title { font-size: 0.64rem; letter-spacing: 0.12em; color: var(--muted); margin: 1.2rem 0 0.7rem; }
.report-projects { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.report-proj { display: inline-flex; align-items: center; gap: 0.45rem; font-size: 0.84rem; padding: 0.4rem 0.7rem; border: 1px solid var(--hairline); border-radius: var(--r-sm); background: rgba(255, 255, 255, 0.02); }
.rp-num { font-size: 0.66rem; color: var(--accent); }
.roadmap { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.road-phase { display: flex; gap: 0.8rem; align-items: baseline; padding-left: 0.9rem; border-left: 2px solid color-mix(in oklab, var(--accent) 50%, var(--hairline)); }
.road-when { font-size: 0.74rem; color: var(--accent); min-width: 7ch; }
.road-what { font-size: 0.9rem; color: var(--text); }

.sim-cta { display: flex; flex-wrap: wrap; gap: 0.7rem; align-items: center; margin-top: 2rem; }
.sim-sent { font-size: 0.86rem; color: var(--accent); }

/* ============================================================================
   ARCHITECT + FOOTER
   ============================================================================ */
.architect { position: relative; }
.architect-inner {
  max-width: var(--maxw); margin: 0 auto; padding: clamp(3rem, 9vw, 6rem) 1.2rem;
  border-top: 1px solid var(--hairline);
}
.architect-title { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.8rem, 7vw, 3.2rem); letter-spacing: -0.03em; margin: 0; }
.architect-lede { font-size: clamp(1rem, 3.6vw, 1.2rem); color: var(--muted); margin: 1rem 0 1.8rem; max-width: 46ch; }
.architect-cta { display: flex; flex-wrap: wrap; gap: 0.7rem; }

.footer {
  max-width: var(--maxw); margin: 0 auto; padding: 2.6rem 1.2rem 7rem;
  border-top: 1px solid var(--hairline); display: grid; gap: 2rem;
}
.footer-motto { font-family: var(--font-display); font-weight: 700; font-size: clamp(1.3rem, 5vw, 2rem); letter-spacing: -0.025em; display: grid; gap: 0.3rem; }
.footer-motto-sub { color: var(--muted); font-weight: 500; font-size: 0.95rem; }
.footer-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.4rem; }
.footer-locations { font-size: 0.78rem; color: var(--muted); }
.footer-mail { font-size: 0.82rem; color: var(--accent); text-decoration: none; }
.footer-mail:hover { text-decoration: underline; }
.footer-tpl { color: var(--muted); }

/* ============================================================================
   MOBILE BOTTOM BAR
   ============================================================================ */
.bottombar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
  display: flex; gap: 0.4rem; padding: 0.5rem 0.6rem calc(0.5rem + env(safe-area-inset-bottom));
  background: color-mix(in oklab, var(--canvas) 82%, transparent);
  backdrop-filter: blur(16px); border-top: 1px solid var(--hairline);
}
.bb-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; gap: 0.15rem;
  background: none; border: 0; color: var(--muted); font-size: 0.68rem; padding: 0.4rem; border-radius: var(--r-sm);
  min-height: 44px; transition: color 0.2s, background 0.2s;
}
.bb-ico { font-size: 1.05rem; line-height: 1; }
.bb-btn.primary { color: var(--accent); }
.bb-btn:active { background: rgba(255, 255, 255, 0.05); }

/* ============================================================================
   PRICE THE BUILD + THREE-PATH CTA
   ============================================================================ */
.complexity { margin-bottom: 1.8rem; }
.complexity-pills { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.cx-pill {
  display: flex; flex-direction: column; gap: 0.15rem; align-items: flex-start;
  padding: 0.7rem 0.9rem; min-height: 44px; background: rgba(255,255,255,0.03);
  border: 1px solid var(--hairline); border-radius: var(--r); color: var(--muted); transition: all 0.2s;
}
.cx-pill:hover { color: #fff; border-color: var(--hairline-2); }
.cx-pill.on { background: color-mix(in oklab, var(--accent) 16%, transparent); border-color: var(--accent); color: #fff; }
.cx-label { font-family: var(--font-display); font-weight: 700; font-size: 0.95rem; }
.cx-range { font-size: 0.68rem; color: var(--faint); }
.cx-pill.on .cx-range { color: var(--accent); }
.complexity-note { font-size: 0.86rem; color: var(--muted); margin: 0.9rem 0 0; max-width: 60ch; }

.tier-grid { display: grid; grid-template-columns: 1fr; gap: 0.7rem; }
.tier-card {
  position: relative; padding: 1.2rem 1.2rem 1.3rem; border: 1px solid var(--hairline);
  border-radius: var(--r); background: var(--panel); display: flex; flex-direction: column; gap: 0.7rem;
  transition: border-color 0.25s, transform 0.25s var(--ease), box-shadow 0.3s;
}
.tier-card:hover { border-color: color-mix(in oklab, var(--accent) 45%, var(--hairline)); transform: translateY(-2px); }
.tier-sel { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 20px 50px -22px color-mix(in oklab, var(--accent) 80%, transparent); }
.tier-head { display: flex; align-items: baseline; gap: 0.5rem; }
.tier-tag { font-size: 0.75rem; color: var(--accent); font-weight: 600; }
.tier-name { font-family: var(--font-display); font-weight: 600; font-size: 0.98rem; letter-spacing: -0.01em; }
.tier-price { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.6rem, 7vw, 2.1rem); letter-spacing: -0.03em; transition: color 0.2s; }
.tier-price.flash { color: color-mix(in oklab, var(--accent) 70%, #fff); }
.tier-includes { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.3rem; }
.tier-includes li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.86rem; color: var(--muted); }
.tier-check { color: var(--accent); font-size: 0.8rem; }
.tier-choose { width: 100%; margin-top: 0.3rem; }
.tier-wiggle { animation: tierWiggle 0.5s var(--ease); }
@keyframes tierWiggle { 0%,100% { transform: rotate(0); } 25% { transform: rotate(-2deg); } 50% { transform: rotate(2deg); } 75% { transform: rotate(-1deg); } }

.backend-chip {
  display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; margin: 1rem 0 2.4rem;
  padding: 0.7rem 1rem; border: 1px dashed var(--hairline-2); border-radius: var(--r);
  font-size: 0.9rem; color: var(--muted);
}
.be-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); }
.be-price { color: #fff; font-weight: 600; }
.be-note { font-size: 0.7rem; color: var(--faint); margin-left: auto; }

.roi { border: 1px solid var(--hairline); border-radius: var(--r); background: var(--panel); padding: 1.3rem; }
.roi-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2rem; }
.roi-inputs { display: grid; gap: 1rem; margin-bottom: 1.4rem; }
.roi-out { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.6rem; }
.roi-stat { padding: 0.9rem 0.8rem; border: 1px solid var(--hairline); border-radius: var(--r); background: rgba(255,255,255,0.02); }
.roi-stat.accent { border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline)); background: color-mix(in oklab, var(--accent) 8%, transparent); }
.roi-stat-label { font-size: 0.6rem; letter-spacing: 0.08em; color: var(--muted); }
.roi-stat-value { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.2rem, 5vw, 1.7rem); letter-spacing: -0.02em; margin-top: 0.25rem; }
.roi-stat.accent .roi-stat-value { color: var(--accent); }
.roi-subline { font-size: 0.9rem; color: var(--muted); margin: 1.1rem 0 0; }
.roi-quip { color: var(--accent); font-weight: 600; }

/* three-path CTA — redesigned */
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; max-width: 52ch; }
.three-path { border-top: 1px solid var(--hairline); }
.decision { max-width: var(--maxw); margin: 0 auto; display: grid; gap: 1.5rem; }

/* featured / recommended path */
.path-feature {
  position: relative; padding: 1.5rem 1.4rem 1.6rem;
  border: 1px solid color-mix(in oklab, var(--accent) 42%, var(--hairline));
  border-top: 3px solid var(--accent); border-radius: var(--r);
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--accent) 10%, transparent), transparent 55%),
    var(--panel);
  box-shadow: 0 34px 90px -46px color-mix(in oklab, var(--accent) 75%, transparent);
}
.path-feature-head { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 1.1rem; }
.path-index { font-size: 0.95rem; font-weight: 700; color: var(--accent); }
.path-flag {
  font-size: 0.6rem; letter-spacing: 0.14em; text-transform: uppercase; color: #08090c;
  background: var(--accent); padding: 0.28rem 0.6rem; border-radius: 999px; font-weight: 600;
}
.path-feature-grid { display: grid; grid-template-columns: 1fr; gap: 1.4rem; align-items: end; }
.path-feature-copy .path-sub { color: var(--accent); }
.path-title.feature { font-size: clamp(1.9rem, 6vw, 2.7rem); margin: 0.35rem 0 0.6rem; line-height: 1.0; }
.path-feature-meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.1rem; }
.path-chip {
  display: inline-flex; align-items: center; gap: 0.45rem; font-size: 0.78rem; color: var(--text);
  border: 1px solid var(--hairline-2); padding: 0.38rem 0.75rem; border-radius: 999px;
}
.pc-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.path-feature-action { display: flex; flex-direction: column; gap: 0.9rem; }
.recap {
  border: 1px solid var(--hairline-2); background: rgba(255,255,255,0.025);
  border-radius: var(--r); padding: 1.1rem 1.2rem; display: flex; flex-direction: column; gap: 0.3rem;
}
.recap-label { font-size: 0.6rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); }
.recap-price { font-family: var(--font-display); font-weight: 800; font-size: clamp(1.9rem, 7vw, 2.5rem); letter-spacing: -0.03em; color: #fff; line-height: 1; }
.recap-sub { font-size: 0.74rem; color: var(--muted); }
.path-cta.feature { margin-top: 0; }

/* divider before alternatives */
.path-alt-head { display: flex; align-items: center; gap: 1rem; }
.path-alt-label { font-size: 0.64rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); white-space: nowrap; }
.path-alt-rule { flex: 1; height: 1px; background: var(--hairline); }

/* alternative path cards */
.path-alt-grid { display: grid; grid-template-columns: 1fr; gap: 0.8rem; }
.path-card {
  position: relative; padding: 1.4rem 1.3rem 1.4rem; border: 1px solid var(--hairline);
  border-top: 3px solid var(--path); border-radius: var(--r); background: var(--panel);
  display: flex; flex-direction: column; gap: 0.5rem; transition: transform 0.25s var(--ease), box-shadow 0.3s, border-color 0.25s;
}
.path-card.alt { border-top: 1px solid var(--hairline); border-left: 3px solid var(--path); }
.path-card:hover { transform: translateY(-4px); box-shadow: 0 24px 60px -22px color-mix(in oklab, var(--path) 55%, transparent); }
.path-card-top { display: flex; align-items: center; gap: 0.55rem; }
.path-card-top .path-index { color: var(--path); font-size: 0.82rem; }
.path-sub { font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--path); }
.path-title { font-family: var(--font-display); font-weight: 800; font-size: 1.35rem; letter-spacing: -0.02em; margin: 0.2rem 0 0; }
.path-desc { font-size: 0.92rem; color: var(--muted); margin: 0; flex: 1; }
.path-price { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text); padding: 0.6rem 0; border-top: 1px solid var(--hairline); margin-top: 0.4rem; }
.path-cta { background: var(--accent); color: #08090c; border: 0; width: 100%; padding: 0.85rem 1rem; font-size: 0.95rem; font-weight: 700; border-radius: var(--r); }
.path-cta:hover { transform: translateY(-1px); box-shadow: 0 10px 30px -8px color-mix(in oklab, var(--accent) 70%, transparent); }
.path-cta.ghost { background: transparent; color: var(--path); border: 1px solid color-mix(in oklab, var(--path) 55%, var(--hairline)); }
.path-cta.ghost:hover { background: color-mix(in oklab, var(--path) 14%, transparent); box-shadow: none; transform: translateY(-1px); }
.human-row { display: flex; justify-content: center; margin-top: 2rem; }
.human-btn { background: none; border: 0; color: var(--faint); font-size: 0.78rem; padding: 0.5rem 0.8rem; cursor: pointer; transition: color 0.2s; }
.human-btn:hover { color: var(--muted); text-decoration: underline; }

@media (min-width: 720px) {
  .path-feature { padding: 2rem 2rem 2.1rem; }
  .path-feature-grid { grid-template-columns: 1.5fr 0.85fr; gap: 2.4rem; }
  .path-alt-grid { grid-template-columns: 1fr 1fr; }
}

/* ============================================================================
   CHECKPOINT 4 — PROOF (pillars · platform-behind · maturity · discovery)
   ============================================================================ */
/* nav size toggle */
.size-toggle { display: inline-flex; border: 1px solid var(--hairline-2); border-radius: var(--r); overflow: hidden; }
.size-opt { background: none; border: 0; color: var(--muted); font-size: 0.72rem; font-weight: 600; padding: 0.4rem 0.6rem; cursor: pointer; transition: all 0.2s; }
.size-opt.on { background: var(--accent); color: #08090c; }

/* four pillars + arc */
.pillar-grid { display: grid; grid-template-columns: 1fr; gap: 0.8rem; }
.pillar-card { padding: 1.4rem 1.3rem; border: 1px solid var(--hairline); border-radius: var(--r); background: var(--panel); }
.pillar-num { font-size: 0.72rem; color: var(--accent); }
.pillar-title { font-family: var(--font-display); font-weight: 800; font-size: 1.25rem; letter-spacing: -0.02em; margin: 0.5rem 0 0.5rem; }
.pillar-desc { font-size: 0.92rem; color: var(--muted); margin: 0; }
.arc { margin-top: 2.4rem; padding-top: 1.8rem; border-top: 1px solid var(--hairline); }
.arc-label { display: block; font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--faint); margin-bottom: 1.1rem; }
.arc-track { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.8rem; }
.arc-step { display: flex; gap: 0.9rem; align-items: baseline; padding-left: 1rem; border-left: 2px solid color-mix(in oklab, var(--accent) 50%, var(--hairline)); }
.arc-year { font-size: 0.85rem; font-weight: 600; color: var(--accent); min-width: 4ch; }
.arc-what { font-size: 0.98rem; color: var(--text); }

/* platform behind your platform */
.behind-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; align-items: stretch; }
.behind-col { padding: 1.4rem; border: 1px solid var(--hairline); border-radius: var(--r); background: var(--panel); }
.behind-col.branded { border-color: color-mix(in oklab, var(--accent) 45%, var(--hairline)); }
.behind-tag { display: block; font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 1rem; }
.behind-engine-mark { margin-bottom: 1.1rem; }
.behind-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.5rem; }
.behind-list li { display: flex; align-items: center; gap: 0.5rem; font-size: 0.88rem; color: var(--muted); }
.behind-check { color: var(--accent); }
.behind-swap { display: flex; align-items: center; justify-content: center; gap: 0.5rem; color: var(--faint); }
.behind-swap-arrow { font-size: 1.4rem; color: var(--accent); }
.behind-swap-label { font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; }
.behind-brand-chrome { padding: 1.4rem; border: 1px dashed var(--accent); border-radius: var(--r); text-align: center; margin-bottom: 1rem; background: color-mix(in oklab, var(--accent) 7%, transparent); }
.behind-brand-mark { font-family: var(--font-display); font-weight: 800; font-size: 1.5rem; letter-spacing: -0.02em; color: #fff; animation: brandIn 0.45s var(--ease); }
@keyframes brandIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.behind-os { display: block; font-size: 0.72rem; color: var(--accent); margin-top: 0.4rem; }
.behind-note { font-size: 0.86rem; color: var(--muted); margin: 0; }

/* AI maturity curve */
.mat-track { list-style: none; margin: 2rem 0 0; padding: 0; display: grid; gap: 0.7rem; }
.mat-stage {
  position: relative; display: grid; grid-template-columns: 32px 1fr; align-items: center; gap: 0.7rem 0.9rem;
  padding: 0.9rem 1rem; border: 1px solid var(--hairline); border-radius: var(--r);
  background: rgba(255,255,255,0.02); cursor: pointer; opacity: 0; transform: translateY(14px);
  transition: border-color 0.3s, background 0.3s, opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.mat-track.in .mat-stage { opacity: 1; transform: none; transition-delay: calc(var(--i) * 0.12s); }
.mat-node { grid-row: span 2; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; font-family: var(--font-mono); font-weight: 700; font-size: 0.85rem; border: 1px solid var(--hairline-2); color: var(--muted); transition: all 0.3s; }
.mat-name { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; align-self: end; }
.mat-desc { font-size: 0.74rem; color: var(--faint); align-self: start; }
.mat-stage.reached { border-color: color-mix(in oklab, var(--accent) 40%, var(--hairline)); }
.mat-stage.reached .mat-node { border-color: var(--accent); color: var(--accent); }
.mat-stage.cur { border-color: var(--accent); background: color-mix(in oklab, var(--accent) 10%, transparent); box-shadow: 0 0 0 1px var(--accent), 0 0 30px -8px var(--accent); }
.mat-stage.cur .mat-node { background: var(--accent); color: #08090c; border-color: var(--accent); }
.mat-line { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.1rem, 4vw, 1.5rem); letter-spacing: -0.02em; color: #fff; margin: 1.6rem 0 0; text-wrap: pretty; }

/* discovery engine */
.disc-controls { display: flex; flex-direction: column; gap: 0.7rem; margin-bottom: 1rem; }
.disc-search { width: 100%; padding: 0.85rem 1rem; background: rgba(255,255,255,0.03); border: 1px solid var(--hairline-2); border-radius: var(--r); color: var(--text); font-family: var(--font-body); font-size: 0.95rem; }
.disc-search::placeholder { color: var(--faint); }
.disc-search:focus { outline: none; border-color: var(--accent); }
.disc-size { flex-wrap: wrap; }
.disc-meta { font-size: 0.7rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--faint); margin-bottom: 0.9rem; }
.disc-grid { display: grid; grid-template-columns: 1fr; gap: 0.7rem; }
.disc-card { display: flex; gap: 0.7rem; padding: 1rem 1.1rem; border: 1px solid var(--hairline); border-radius: var(--r); background: var(--panel); transition: border-color 0.25s, transform 0.25s var(--ease); }
.disc-card:hover { border-color: color-mix(in oklab, var(--accent) 45%, var(--hairline)); transform: translateY(-2px); }
.disc-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); flex: none; margin-top: 0.4rem; box-shadow: 0 0 10px var(--accent); }
.disc-body { flex: 1; }
.disc-name { font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; letter-spacing: -0.01em; margin: 0 0 0.25rem; }
.disc-tag { font-size: 0.85rem; color: var(--muted); margin: 0 0 0.6rem; }
.disc-foot { display: flex; align-items: center; justify-content: space-between; gap: 0.6rem; }
.disc-arch { font-size: 0.68rem; color: var(--faint); }
.disc-see { background: none; border: 0; color: var(--accent); font-size: 0.8rem; font-weight: 600; cursor: pointer; padding: 0.2rem 0; }
.disc-see:hover { text-decoration: underline; }

/* private-label toggle (simulator) */
.wl-toggle { display: inline-flex; align-items: center; gap: 0.6rem; background: rgba(255,255,255,0.03); border: 1px solid var(--hairline); border-radius: var(--r); padding: 0.5rem 0.8rem; min-height: 44px; cursor: pointer; transition: all 0.2s; }
.wl-toggle.on { border-color: var(--accent); background: color-mix(in oklab, var(--accent) 10%, transparent); }
.wl-knob { width: 34px; height: 18px; border-radius: 999px; background: var(--hairline-2); position: relative; flex: none; transition: background 0.2s; }
.wl-knob::after { content: ""; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%; background: #fff; transition: transform 0.2s var(--ease); }
.wl-toggle.on .wl-knob { background: var(--accent); }
.wl-toggle.on .wl-knob::after { transform: translateX(16px); }
.wl-label { font-size: 0.85rem; color: var(--muted); }
.wl-toggle.on .wl-label { color: #fff; }

/* ============================================================================
   RESPONSIVE — enhance upward
   ============================================================================ */
@media (min-width: 560px) {
  .tile-grid.problems { grid-template-columns: 1fr 1fr; }
  .sim-stats { grid-template-columns: repeat(4, 1fr); }
  .complexity-pills { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 760px) {
  .tile-grid.problems { grid-template-columns: repeat(4, 1fr); }
  .tile-grid.labs { grid-template-columns: repeat(4, 1fr); }
  .sol-grid { grid-template-columns: 1fr 1fr; }
  .dn-grid { grid-template-columns: 1.1fr 1fr; align-items: center; }
  .sim-body { grid-template-columns: 1fr 1fr; align-items: start; }
  .os-hero { grid-template-columns: 1.15fr 0.85fr; align-items: center; gap: 3rem; }
  .bottombar { display: none; }
  .footer { grid-template-columns: 1fr auto; align-items: end; }
  .tier-grid { grid-template-columns: repeat(3, 1fr); }
  .path-grid { grid-template-columns: repeat(3, 1fr); }
  .pillar-grid { grid-template-columns: repeat(2, 1fr); }
  .behind-grid { grid-template-columns: 1fr auto 1fr; align-items: center; }
  .mat-track { grid-template-columns: repeat(5, 1fr); gap: 0.5rem; }
  .mat-stage { grid-template-columns: 1fr; grid-template-rows: auto auto auto; text-align: center; justify-items: center; gap: 0.3rem; }
  .mat-node { grid-row: auto; }
  .disc-grid { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
  .topnav { padding: 0.9rem 2rem; }
  .topnav-labnav { display: flex; }
  .topnav-link.global { display: inline-block; }
  .sol-grid { grid-template-columns: repeat(4, 1fr); }
  .os-headline { font-size: clamp(3rem, 5vw, 4.4rem); }
  .pillar-grid { grid-template-columns: repeat(4, 1fr); }
  .disc-grid { grid-template-columns: repeat(3, 1fr); }
}

/* ============================================================================
   REDUCED MOTION
   ============================================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .mask-line { opacity: 1; clip-path: none; transform: none; }
  .reveal, .reveal-now, .cascade, .fade-rise { opacity: 1 !important; transform: none !important; }
  .dn-curve { stroke-dashoffset: 0 !important; }
}

/* Safety net: if the animation timeline never advances (some embedded/offscreen
   contexts), force all entrance-animated content visible so nothing is stuck blank. */
.no-anim .mask-line,
.no-anim .reveal,
.no-anim .reveal-now,
.no-anim .cascade,
.no-anim .fade-rise {
  opacity: 1 !important; clip-path: none !important; transform: none !important;
  animation: none !important; transition: none !important;
}
.no-anim .dn-curve { stroke-dashoffset: 0 !important; }
.no-anim .dn-area, .no-anim .dn-pt, .no-anim .dn-stage, .no-anim .hv-node { opacity: 1 !important; transform: none !important; }