/* ==========================================================================
   UmpireRx — landing page
   Tokens · base · layout · sections · animations
   ========================================================================== */

:root {
  --bg: #FAFAF7;
  --bg-alt: #F1F0EA;
  --surface: #FFFFFF;
  --ink: #141413;
  --ink-2: #3D3D3A;
  --muted: #6F6F69;
  --line: #E2E1D9;
  --line-strong: #CFCEC4;
  --accent: #CDEB4B;          /* chalk-line / ball highlight (fills) */
  --accent-ink: #4A6B00;      /* accent used as text on bg */
  --on-accent: #141413;
  --core-role: #CDEB4B;
  --ok: #2F7D32;
  --shadow: 0 1px 2px rgba(20,20,19,.04), 0 12px 32px -12px rgba(20,20,19,.12);
  --radius: 14px;
  --radius-sm: 10px;
  --maxw: 1160px;
  --gutter: 24px;
  --font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111110;
    --bg-alt: #181816;
    --surface: #1C1C1A;
    --ink: #F2F1EC;
    --ink-2: #C9C8C1;
    --muted: #93928B;
    --line: #2A2A27;
    --line-strong: #3A3A36;
    --accent: #D6F25C;
    --accent-ink: #D6F25C;
    --on-accent: #111110;
    --core-role: #4A6B00;
    --ok: #7BD17F;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 16px 40px -16px rgba(0,0,0,.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111110;
  --bg-alt: #181816;
  --surface: #1C1C1A;
  --ink: #F2F1EC;
  --ink-2: #C9C8C1;
  --muted: #93928B;
  --line: #2A2A27;
  --line-strong: #3A3A36;
  --accent: #D6F25C;
  --accent-ink: #D6F25C;
  --on-accent: #111110;
  --core-role: #4A6B00;
  --ok: #7BD17F;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 16px 40px -16px rgba(0,0,0,.6);
  color-scheme: dark;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color .35s ease, color .35s ease;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.08; letter-spacing: -0.025em; font-weight: 600; }
p { margin: 0; }
::selection { background: var(--accent); color: var(--on-accent); }
:focus-visible { outline: 2px solid var(--accent-ink); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  transition: background-color .3s ease, border-color .3s ease, backdrop-filter .3s ease;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: inline-flex; align-items: center; text-decoration: none; color: var(--ink); }
.brand svg { height: 26px; width: auto; }
.brand .rx { fill: var(--muted); }
.brand .ball { transform-box: fill-box; transform-origin: 50% 100%; }
.brand:hover .ball { animation: hop .6s var(--ease-out); }
@keyframes hop { 0%,100% { transform: translateY(0); } 40% { transform: translateY(-38%); } 70% { transform: translateY(0) scale(1.06,.92); } }

.nav__links { display: flex; align-items: center; gap: 28px; list-style: none; margin: 0; padding: 0; }
.nav__links a { text-decoration: none; font-size: 14.5px; color: var(--ink-2); transition: color .2s; }
.nav__links a:hover, .nav__links a.is-active { color: var(--ink); }
.nav__actions { display: flex; align-items: center; gap: 8px; }

.pill-toggle {
  display: inline-flex; align-items: center; gap: 2px; padding: 3px;
  border: 1px solid var(--line-strong); border-radius: 999px; background: var(--surface);
}
.pill-toggle button {
  all: unset; cursor: pointer; font-size: 12px; font-weight: 600; letter-spacing: .04em;
  padding: 5px 9px; border-radius: 999px; color: var(--muted); transition: background .2s, color .2s;
}
.pill-toggle button[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.icon-btn {
  all: unset; cursor: pointer; width: 36px; height: 36px; display: grid; place-items: center;
  border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink);
  transition: transform .2s;
}
.icon-btn:hover { transform: rotate(-12deg); }
.icon-btn svg { width: 17px; height: 17px; }
.icon-btn .moon { display: none; }
:root[data-theme="dark"] .icon-btn .sun { display: none; }
:root[data-theme="dark"] .icon-btn .moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-btn .sun { display: none; }
  :root:not([data-theme="light"]) .icon-btn .moon { display: block; }
}
.menu-btn { display: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer;
  font: 600 15px/1 var(--font); padding: 14px 20px; border-radius: 999px; border: 1px solid transparent;
  transition: transform .25s var(--ease-out), background-color .2s, color .2s, border-color .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--ink); color: var(--bg); }
.btn--ghost { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn--ghost:hover { border-color: var(--ink); }
.btn--sm { padding: 10px 14px; font-size: 13.5px; }
.btn .arrow { transition: transform .25s var(--ease-out); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- side progress (deck feel) ---------- */
.deck-progress {
  position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 40;
  display: flex; flex-direction: column; gap: 10px; list-style: none; margin: 0; padding: 0;
}
.deck-progress a {
  display: block; width: 8px; height: 8px; border-radius: 50%; background: var(--line-strong);
  transition: background .3s, transform .3s var(--ease-out);
}
.deck-progress a.is-active { background: var(--ink); transform: scale(1.4); }
.deck-progress a:hover { background: var(--ink-2); }

/* ---------- hero ---------- */
.hero {
  min-height: 100svh; display: flex; align-items: center; position: relative; overflow: hidden;
  padding: 100px 0 110px;
}
@media (max-height: 820px) { .scroll-hint { display: none; } }
.hero__grid {
  position: absolute; inset: 0; pointer-events: none; opacity: .55;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 20%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 45%, #000 20%, transparent 75%);
}
.hero__inner { position: relative; text-align: center; display: flex; flex-direction: column; align-items: center; }
.hero-mark { width: min(230px, 52vw); height: auto; overflow: visible; margin-bottom: 36px; color: var(--ink); }
.hero-mark .line { transform-box: fill-box; transform-origin: 0 50%; }
.hero-mark .ball { transform-box: fill-box; transform-origin: 50% 100%; }
.hero-mark .ring { transform-box: fill-box; transform-origin: 50% 50%; fill: none; stroke: var(--accent-ink); stroke-width: 1.2; opacity: 0; }
.hero-mark .shadow { fill: var(--ink); opacity: 0; transform-box: fill-box; transform-origin: 50% 50%; }

.js .hero-mark .line { transform: scaleX(0); }
.js .hero-mark .ball { transform: translateY(-340%); opacity: 0; }
.is-ready .hero-mark .line { animation: drawLine .8s var(--ease-out) .15s forwards; }
.is-ready .hero-mark .ball { animation: drop 1.35s .75s forwards; }
.is-ready .hero-mark .ring { animation: ring 1s ease-out 1.28s forwards; }
.is-ready .hero-mark .ring--2 { animation: ring 1.1s ease-out 1.42s forwards; }

@keyframes drawLine { to { transform: scaleX(1); } }
@keyframes drop {
  0%   { transform: translateY(-340%); opacity: 0; animation-timing-function: cubic-bezier(.55,0,1,.45); }
  6%   { opacity: 1; }
  40%  { transform: translateY(0) scale(1.1, .86); animation-timing-function: cubic-bezier(0,.55,.45,1); }
  58%  { transform: translateY(-34%) scale(.98, 1.03); animation-timing-function: cubic-bezier(.55,0,1,.45); }
  74%  { transform: translateY(0) scale(1.04, .95); animation-timing-function: cubic-bezier(0,.55,.45,1); }
  85%  { transform: translateY(-7%) scale(1, 1); animation-timing-function: cubic-bezier(.55,0,1,.45); }
  94%  { transform: translateY(0) scale(1.01, .99); }
  100% { transform: translateY(0) scale(1, 1); opacity: 1; }
}
@keyframes ring {
  0%   { opacity: .9; transform: scale(.2); }
  100% { opacity: 0;  transform: scale(1.8); }
}

.hero__kicker, .kicker {
  font: 500 12.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted);
  display: inline-flex; align-items: center; gap: 10px;
}
.kicker .num { color: var(--ink); }
.kicker::before { content: ""; width: 22px; height: 2px; background: var(--accent-ink); border-radius: 2px; }
.hero__kicker { margin-bottom: 22px; }
.hero__kicker .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-ink); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 35%, transparent); }

.hero h1 {
  font-size: clamp(2.4rem, 5.6vw, 4.6rem); max-width: 16ch; letter-spacing: -0.035em; font-weight: 620;
}
.hero h1 em { font-style: normal; color: var(--muted); }
.hero__sub { margin-top: 24px; font-size: clamp(1.02rem, 1.6vw, 1.22rem); color: var(--ink-2); max-width: 60ch; }
.hero__cta { margin-top: 36px; display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }
.scroll-hint {
  position: absolute; bottom: 26px; left: 0; right: 0; margin: 0 auto; width: max-content;
  font: 500 11px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted);
  display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.scroll-hint .l { width: 1px; height: 36px; background: linear-gradient(var(--muted), transparent); animation: hint 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes hint { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* staged hero text */
.js .stage { opacity: 0; transform: translateY(18px); }
.is-ready .stage { animation: rise .9s var(--ease-out) forwards; }
.is-ready .stage[data-d="1"] { animation-delay: 1.55s; }
.is-ready .stage[data-d="2"] { animation-delay: 1.7s; }
.is-ready .stage[data-d="3"] { animation-delay: 1.85s; }
.is-ready .stage[data-d="4"] { animation-delay: 2.0s; }
.is-ready .stage[data-d="5"] { animation-delay: 2.3s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* ---------- sections ---------- */
.section { padding: clamp(84px, 11vw, 140px) 0; position: relative; }
.section--alt { background: var(--bg-alt); }
.section__head { max-width: 800px; margin-bottom: clamp(40px, 6vw, 64px); }
.section__head h2 { font-size: clamp(2rem, 4.4vw, 3.4rem); margin-top: 18px; }
.section__head h2 em { font-style: normal; color: var(--muted); }
.section__head .lead { margin-top: 20px; font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: var(--ink-2); max-width: 62ch; }

/* reveal */
.js .reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); transition-delay: calc(var(--i, 0) * 90ms); }
.js .reveal.is-in { opacity: 1; transform: none; }

/* cards */
.cards { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; box-shadow: var(--shadow);
}
.card h3 { font-size: 1.2rem; letter-spacing: -0.015em; }
.card p { margin-top: 10px; color: var(--ink-2); font-size: 15.5px; }
.card__icon { width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center; background: var(--bg-alt); margin-bottom: 20px; color: var(--ink); }
.card__icon svg { width: 20px; height: 20px; }

/* problem: dispute visual */
.dispute {
  margin-top: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface);
  padding: 30px 28px; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 20px;
  box-shadow: var(--shadow);
}
.dispute__side { font-size: 14.5px; color: var(--ink-2); }
.dispute__side strong { display: block; color: var(--ink); font-size: 15px; margin-bottom: 4px; }
.dispute__side--r { text-align: right; }
.dispute__mid { display: flex; align-items: center; gap: 8px; font: 600 13px/1 var(--mono); color: var(--muted); }
.dispute__val { padding: 8px 12px; border-radius: 8px; border: 1px dashed var(--line-strong); color: var(--ink); white-space: nowrap; }
.dispute__vs { color: var(--muted); }
.dispute__val--a { animation: jitter 3.4s ease-in-out infinite; }
.dispute__val--b { animation: jitter 3.4s ease-in-out infinite reverse; }
@keyframes jitter { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(4px); } }

/* stats */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.stat { padding: 30px 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); display: flex; flex-direction: column; }
.stat__num { font-size: clamp(2.6rem, 5vw, 3.8rem); font-weight: 620; letter-spacing: -0.04em; line-height: 1; font-variant-numeric: tabular-nums; }
.stat__num small { font-size: .45em; letter-spacing: -0.01em; color: var(--muted); font-weight: 500; margin-left: 4px; }
.stat__label { margin-top: 14px; color: var(--ink-2); font-size: 15.5px; flex: 1; }
.stat__src { margin-top: 18px; font: 500 11.5px/1.4 var(--mono); color: var(--muted); }
.stat__src a { text-decoration: none; border-bottom: 1px solid var(--line-strong); }
.why-ai {
  margin-top: 16px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 16px; align-items: stretch;
}
.why-ai__text { padding: 34px 30px; border-radius: var(--radius); background: var(--ink); color: var(--bg); }
.why-ai__text h3 { font-size: clamp(1.35rem, 2.4vw, 1.8rem); }
.why-ai__text p { margin-top: 14px; color: color-mix(in srgb, var(--bg) 78%, transparent); font-size: 15.5px; }
.cost-chart { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.cost-chart__title { font: 500 12px/1.3 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.cost-chart__bars { margin-top: 22px; display: grid; gap: 14px; }
.bar-row { display: grid; grid-template-columns: 120px 1fr; gap: 14px; align-items: center; font-size: 14px; color: var(--ink-2); }
.bar { height: 12px; border-radius: 999px; background: var(--bg-alt); overflow: hidden; }
.bar i { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--ink); transition: width 1.4s var(--ease-out); }
.bar i.accent { background: var(--accent); }
.is-in .bar i { width: var(--w); }
.cost-chart__note { margin-top: 18px; font-size: 13px; color: var(--muted); }

/* how it works — track */
.how { position: relative; }
.track { position: relative; margin: 8px 0 34px; height: 36px; }
.track__line { position: absolute; left: 0; right: 0; top: 50%; height: 4px; transform: translateY(-50%); background: var(--line); border-radius: 4px; }
.track__fill { position: absolute; left: 0; top: 50%; height: 4px; transform: translateY(-50%); background: var(--ink); border-radius: 4px; width: calc(var(--p, 0) * 100%); }
.track__ball {
  position: absolute; top: 50%; left: calc(var(--p, 0) * 100%); width: 26px; height: 26px; margin-left: -13px;
  transform: translateY(calc(-50% - 15px)); border-radius: 50%; background: var(--ink);
  box-shadow: 0 0 0 5px var(--bg), 0 0 0 6px var(--line);
}
.section--alt .track__ball { box-shadow: 0 0 0 5px var(--bg-alt), 0 0 0 6px var(--line); }
.track__tick { position: absolute; top: 50%; width: 12px; height: 12px; margin-left: -6px; transform: translateY(-50%); border-radius: 50%; background: var(--bg); border: 2px solid var(--line-strong); transition: border-color .3s, background .3s; }
.track__tick.is-on { border-color: var(--ink); background: var(--accent); }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.step { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); transition: border-color .4s, transform .4s var(--ease-out), box-shadow .4s; }
.step.is-on { border-color: var(--ink); box-shadow: var(--shadow); transform: translateY(-4px); }
.step__n { font: 600 12px/1 var(--mono); color: var(--muted); letter-spacing: .1em; }
.step.is-on .step__n { color: var(--accent-ink); }
.step h3 { margin-top: 14px; font-size: 1.12rem; letter-spacing: -0.015em; }
.step p { margin-top: 10px; font-size: 14.8px; color: var(--ink-2); }

/* product mock */
.mock {
  border: 1px solid var(--line-strong); border-radius: 18px; background: var(--surface); box-shadow: var(--shadow);
  overflow: hidden;
}
.mock__bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--line); background: var(--bg-alt); }
.mock__dots { display: flex; gap: 6px; }
.mock__dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--line-strong); }
.mock__title { font: 500 12.5px/1 var(--mono); color: var(--muted); }
.mock__tag { margin-left: auto; font: 600 11px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 6px 9px; border-radius: 6px; background: var(--bg); border: 1px solid var(--line); color: var(--muted); }
.mock__body { display: grid; grid-template-columns: 1fr 1.35fr 1fr; }
.mock__col { padding: 22px; border-right: 1px solid var(--line); min-width: 0; }
.mock__col:last-child { border-right: 0; }
.mock__label { font: 600 11px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.lock { display: inline-flex; align-items: center; gap: 6px; font: 600 11px/1 var(--mono); color: var(--ink-2); padding: 5px 8px; border-radius: 6px; background: var(--bg-alt); margin-bottom: 14px; }
.lock svg { width: 12px; height: 12px; }
.criterion { font-size: 15px; font-weight: 600; line-height: 1.45; }
.criterion-meta { margin-top: 14px; display: grid; gap: 8px; font-size: 13px; color: var(--muted); }
.criterion-meta b { color: var(--ink-2); font-weight: 500; }
.ev { display: grid; gap: 10px; }
.ev__item {
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 12px 14px; background: var(--bg);
  display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: start;
  opacity: .25; transform: translateY(6px); transition: opacity .5s var(--ease-out), transform .5s var(--ease-out), border-color .4s;
}
.ev__item.is-on { opacity: 1; transform: none; border-color: var(--line-strong); }
.ev__text { font-size: 14px; color: var(--ink); }
.ev__text mark { background: color-mix(in srgb, var(--accent) 55%, transparent); color: inherit; padding: 0 3px; border-radius: 3px; }
.ev__src { grid-column: 1 / 2; font: 500 11.5px/1.3 var(--mono); color: var(--muted); }
.ev__chk { grid-row: 1 / 3; grid-column: 2; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--line-strong); display: grid; place-items: center; color: transparent; transition: all .35s var(--ease-out); }
.ev__item.is-on .ev__chk { background: var(--ok); border-color: var(--ok); color: #fff; }
.ev__chk svg { width: 12px; height: 12px; }
.verdict { border-radius: var(--radius-sm); border: 1px dashed var(--line-strong); padding: 16px; transition: all .5s var(--ease-out); }
.verdict__status { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 14.5px; }
.verdict__status .pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--muted); }
.verdict:not(.is-done) .pulse { animation: blink 1.2s ease-in-out infinite; }
@keyframes blink { 50% { opacity: .25; } }
.verdict.is-done { border-style: solid; border-color: var(--ok); background: color-mix(in srgb, var(--ok) 8%, transparent); }
.verdict.is-done .pulse { background: var(--ok); }
.verdict__sub { margin-top: 6px; font-size: 13px; color: var(--muted); }
.sign { margin-top: 16px; }
.sign svg { width: 100%; height: 46px; color: var(--ink); }
.sign path { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 400; stroke-dashoffset: 400; transition: stroke-dashoffset 1.6s var(--ease-out); }
.sign.is-on path { stroke-dashoffset: 0; }
.sign__who { border-top: 1px solid var(--line-strong); padding-top: 8px; font-size: 12.5px; color: var(--muted); display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.settle { margin-top: 16px; padding: 14px; border-radius: var(--radius-sm); background: var(--ink); color: var(--bg); opacity: 0; transform: translateY(8px); transition: all .6s var(--ease-out); }
.settle.is-on { opacity: 1; transform: none; }
.settle__k { font: 600 10.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; opacity: .65; }
.settle__v { margin-top: 6px; font-size: 14px; font-weight: 600; }
.mock__foot { padding: 12px 16px; border-top: 1px solid var(--line); font: 500 11.5px/1.4 var(--mono); color: var(--muted); display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.replay { all: unset; cursor: pointer; color: var(--ink-2); border-bottom: 1px solid var(--line-strong); }

/* neutrality */
.neutral { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.scale-viz { position: relative; aspect-ratio: 1 / .78; border-radius: 18px; border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); overflow: hidden; }
.scale-viz svg { width: 100%; height: 100%; }
.scale-viz .beam { transform-origin: 200px 150px; animation: balance 6s ease-in-out infinite; }
@keyframes balance { 0%, 100% { transform: rotate(-3deg); } 50% { transform: rotate(3deg); } }
.scale-viz text { font: 600 12px var(--mono); letter-spacing: .06em; fill: var(--muted); }
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.checks li { display: grid; grid-template-columns: 28px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.checks li:last-child { border-bottom: 0; }
.checks .ic { width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--on-accent); display: grid; place-items: center; }
.checks .ic svg { width: 14px; height: 14px; }
.checks strong { display: block; font-weight: 600; letter-spacing: -0.01em; }
.checks span { display: block; margin-top: 3px; color: var(--ink-2); font-size: 15px; }

/* business model */
.flow { display: grid; grid-template-columns: 1fr 1.1fr 1fr; gap: 16px; align-items: stretch; }
.flow__node { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); }
.flow__node--core { background: var(--ink); color: var(--bg); border-color: var(--ink); position: relative; }
.flow__node.flow__node--core p { color: color-mix(in srgb, var(--bg) 78%, transparent); }
.flow__node.flow__node--core .flow__role { color: var(--core-role); }
.flow__role { font: 600 11.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.flow__node--core .flow__role { color: var(--accent); }
.flow__node h3 { margin-top: 12px; font-size: 1.3rem; }
.flow__node p { margin-top: 10px; font-size: 15px; color: var(--ink-2); }
.flow__pay { margin-top: 18px; display: inline-flex; align-items: center; gap: 8px; font: 600 12.5px/1 var(--mono); padding: 8px 10px; border-radius: 8px; background: var(--bg-alt); color: var(--ink); }
.flow__node--core .flow__pay { background: color-mix(in srgb, var(--bg) 12%, transparent); color: var(--bg); }
.model-note { margin-top: 16px; padding: 18px 22px; border-radius: var(--radius); border: 1px dashed var(--line-strong); color: var(--ink-2); font-size: 15px; }
.model-note b { color: var(--ink); }

/* roadmap */
.roadmap { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.phase { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); position: relative; box-shadow: var(--shadow); }
.phase__when { font: 600 12px/1 var(--mono); letter-spacing: .08em; color: var(--accent-ink); text-transform: uppercase; }
.phase h3 { margin-top: 12px; font-size: 1.2rem; }
.phase ul { margin: 14px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.phase li { font-size: 14.8px; color: var(--ink-2); padding-left: 18px; position: relative; }
.phase li::before { content: ""; position: absolute; left: 0; top: .62em; width: 7px; height: 7px; border-radius: 50%; background: var(--ink); }
.phase__flag { display: inline-block; margin-top: 12px; font-size: 13px; color: var(--muted); }
.markets { margin-top: 16px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.market { padding: 26px 28px; border-radius: var(--radius); background: var(--bg-alt); border: 1px solid var(--line); }
.section--alt .market { background: var(--surface); }
.market h4 { font-size: 1.05rem; display: flex; align-items: center; gap: 10px; }
.market h4 span { font: 600 11px/1 var(--mono); padding: 5px 7px; border-radius: 6px; background: var(--ink); color: var(--bg); letter-spacing: .06em; }
.market p { margin-top: 10px; font-size: 15px; color: var(--ink-2); }

/* vision */
.vision { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.vcard { padding: 28px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); position: relative; overflow: hidden; box-shadow: var(--shadow); }
.vcard__tag { font: 600 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 6px 8px; border-radius: 6px; display: inline-block; }
.vcard__tag--now { background: var(--accent); color: var(--on-accent); }
.vcard__tag--next { background: var(--bg-alt); color: var(--muted); border: 1px solid var(--line); }
.vcard h3 { margin-top: 18px; font-size: 1.2rem; }
.vcard p { margin-top: 10px; font-size: 15px; color: var(--ink-2); }
.vcard--now { border-color: var(--ink); }
.stack { margin-top: 44px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.stack__label { font: 600 11.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-right: 8px; }
.chip { font-size: 13.5px; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--ink-2); background: var(--surface); }

/* team */
.team { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.person { padding: 30px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); box-shadow: var(--shadow); display: grid; grid-template-columns: 64px 1fr; gap: 20px; align-items: start; }
.avatar { width: 64px; height: 64px; border-radius: 50%; background: var(--ink); color: var(--bg); display: grid; place-items: center; font-weight: 600; font-size: 20px; letter-spacing: -0.02em; position: relative; }
.avatar::after { content: ""; position: absolute; right: -2px; bottom: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--accent); border: 3px solid var(--surface); }
.person h3 { font-size: 1.25rem; }
.person__role { margin-top: 4px; font: 600 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--accent-ink); }
.person ul { margin: 16px 0 0; padding: 0; list-style: none; display: grid; gap: 8px; }
.person li { font-size: 14.8px; color: var(--ink-2); padding-left: 16px; position: relative; }
.person li::before { content: ""; position: absolute; left: 0; top: .7em; width: 6px; height: 2px; background: var(--muted); }
.together { margin-top: 16px; padding: 20px 24px; border-radius: var(--radius); border: 1px dashed var(--line-strong); font-size: 15px; color: var(--ink-2); }
.together b { color: var(--ink); }

/* final cta */
.cta { text-align: center; padding: clamp(96px, 13vw, 160px) 0; position: relative; overflow: hidden; }
.cta__mark { width: 120px; margin: 0 auto 34px; color: var(--ink); overflow: visible; }
.cta__mark .ball { transform-box: fill-box; transform-origin: 50% 100%; }
.cta.is-in .cta__mark .ball { animation: drop 1.3s forwards; }
.cta h2 { font-size: clamp(2.2rem, 5.4vw, 4.2rem); max-width: 16ch; margin: 0 auto; }
.cta p { margin: 20px auto 0; max-width: 54ch; color: var(--ink-2); font-size: 1.1rem; }
.cta__actions { margin-top: 34px; display: flex; flex-direction: column; align-items: center; gap: 14px; }
.cta__mail { font: 500 14px/1 var(--mono); color: var(--muted); text-decoration: none; }
.cta__mail:hover { color: var(--ink); }

/* footer */
.footer { border-top: 1px solid var(--line); padding: 30px 0 40px; font-size: 13.5px; color: var(--muted); }
.footer__inner { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; align-items: center; }
.footer .brand svg { height: 20px; }
.footer__meta { text-align: right; }
@media (max-width: 820px) { .footer__meta { text-align: left; } }
.footer small { display: block; margin-top: 6px; font-size: 12.5px; }

/* ---------- responsive ---------- */
@media (max-width: 1040px) {
  .nav__links { display: none; }
  .deck-progress { display: none; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .mock__body { grid-template-columns: 1fr 1fr; }
  .mock__col--verdict { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .mock__col--ev { border-right: 0; }
  .neutral { grid-template-columns: 1fr; gap: 36px; }
}
@media (max-width: 820px) {
  :root { --gutter: 20px; }
  body { font-size: 16px; }
  .cards, .stats, .vision, .roadmap, .flow, .team, .markets, .why-ai { grid-template-columns: 1fr; }
  .dispute { grid-template-columns: 1fr; text-align: left; }
  .dispute__side--r { text-align: left; }
  .dispute__mid { justify-content: flex-start; flex-wrap: wrap; }
  .mock__body { grid-template-columns: 1fr; }
  .mock__col { border-right: 0; border-bottom: 1px solid var(--line); }
  .mock__col:last-child { border-bottom: 0; }
  .mock__col--verdict { border-top: 0; }

  /* vertical track on mobile */
  .how__wrap { display: grid; grid-template-columns: 30px 1fr; gap: 16px; }
  .track { height: auto; margin: 0; }
  .track__line { left: 50%; right: auto; top: 0; bottom: 0; width: 4px; height: auto; transform: translateX(-50%); }
  .track__fill { left: 50%; top: 0; width: 4px; height: calc(var(--p, 0) * 100%); transform: translateX(-50%); }
  .track__ball { left: 50%; top: calc(var(--p, 0) * 100%); margin-left: 0; margin-top: -13px; transform: translateX(calc(-50% + 0px)); }
  .track__tick { left: 50% !important; margin-left: -6px; transform: none; }
  .steps { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 96px 1fr; }
  .person { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  :root { --gutter: 16px; }
  .nav__inner { height: 60px; }
  .brand svg { height: 22px; }
  .nav .btn--sm { display: none; }
  .hero { padding-top: 96px; }
  .hero-mark { margin-bottom: 34px; }
  .btn { width: 100%; justify-content: center; }
  .hero__cta { width: 100%; flex-direction: column; }
  .card, .stat, .step, .phase, .vcard, .flow__node, .person { padding: 22px; }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  .js .hero-mark .line { transform: none; }
  .js .hero-mark .ball { transform: none; opacity: 1; }
  .js .stage, .js .reveal { opacity: 1; transform: none; }
}