/* THE AMERICAN INVENTION REPORT
   Light editorial data-report. Colour is functional: every verdict state and
   section carries its own hue. Shares no colour or typeface with the
   helen / dams / china-tech builds. */

:root{
  --paper:#F4F6FB;
  --card:#FFFFFF;
  --line:#DFE3EE;
  --line-2:#C6CCDE;
  --ink:#151823;
  --ink-2:#4A5163;

  --blue:#2340D9;     /* primary action */
  --blue-dk:#1A31A8;
  --green:#046C4E;    /* available now */
  --pink:#C2185B;     /* fails checking */
  --violet:#5B34C4;
  --teal:#04656B;
  --amber:#8A5A00;

  --body:21px;
  --lh:1.7;
  --measure:60ch;
  --tap:64px;
  --pad:28px;
  --r:16px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow:0 1px 2px rgba(21,24,35,.05),0 12px 32px -14px rgba(21,24,35,.18);
  --shadow-lift:0 2px 6px rgba(21,24,35,.07),0 26px 54px -18px rgba(35,64,217,.30);
}

*{box-sizing:border-box}
img,svg,video{max-width:100%;height:auto}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font:400 var(--body)/var(--lh) "IBM Plex Sans",system-ui,sans-serif;
  overflow-x:hidden;
  background-image:
    radial-gradient(56ch 40ch at 88% -6%,rgba(35,64,217,.10),transparent 62%),
    radial-gradient(44ch 34ch at -4% 6%,rgba(91,52,196,.08),transparent 60%),
    radial-gradient(40ch 30ch at 20% 96%,rgba(4,108,78,.06),transparent 60%);
  background-attachment:fixed;
}
.wrap{max-width:1280px;margin:0 auto;padding-left:var(--pad);padding-right:var(--pad);
  position:relative;z-index:2}
.col{max-width:var(--measure)}
p{max-width:var(--measure);color:var(--ink)}
p strong{font-weight:600}

h1,h2,.serif{font-family:"Instrument Serif",Georgia,serif;font-weight:400;
  letter-spacing:-.015em;color:var(--ink)}
h1{font-size:clamp(48px,6.6vw,88px);line-height:.98;margin:0 0 22px}
h1 em{font-style:italic;color:var(--blue)}
h2{font-size:clamp(32px,4.2vw,54px);line-height:1.04;margin:0 0 16px}
h2 em{font-style:italic;color:var(--blue)}
h3{font-family:"IBM Plex Sans",sans-serif;font-size:21px;line-height:1.3;
  margin:0 0 8px;font-weight:600;letter-spacing:-.01em}

.mono,.eyebrow,.tag,.eyebrow{font-size:14px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--blue);margin:0 0 18px;display:flex;align-items:center;gap:12px;font-weight:500}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--blue)}

section{padding:66px 0;position:relative}
section+section{border-top:1px solid var(--line)}

/* ── action ───────────────────────────────────────────────────── */
.cta{
  display:inline-flex;align-items:center;justify-content:center;text-align:center;
  min-height:var(--tap);padding:17px 34px;border-radius:var(--r);
  background:var(--blue);color:#fff;text-decoration:none;border:2px solid var(--blue);
  font-family:"IBM Plex Sans",sans-serif;font-size:19px;font-weight:600;
  box-shadow:var(--shadow);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),background .3s var(--ease);
}
.cta:hover{background:var(--blue-dk);border-color:var(--blue-dk);
  transform:translateY(-3px);box-shadow:var(--shadow-lift)}
.cta:active{transform:translateY(-1px)}
.cta:focus-visible{outline:3px solid var(--violet);outline-offset:3px}
.cta.ghost{background:var(--card);color:var(--ink);border-color:var(--line-2);
  box-shadow:none}
.cta.ghost:hover{background:var(--card);border-color:var(--blue);color:var(--blue);
  box-shadow:var(--shadow)}
.actions{display:flex;flex-wrap:wrap;gap:16px;margin:34px 0 16px}
.fine{font-size:17px;color:var(--ink-2);margin:0}

a:not(.cta){color:var(--blue);text-decoration:underline;text-underline-offset:4px;
  text-decoration-thickness:2px;text-decoration-color:rgba(35,64,217,.32);
  transition:text-decoration-color .3s var(--ease)}
a:not(.cta):hover{text-decoration-color:var(--blue)}
a:focus-visible,summary:focus-visible,button:focus-visible{
  outline:3px solid var(--blue);outline-offset:3px;border-radius:4px}

/* ── hero ─────────────────────────────────────────────────────── */
header.hero{padding-top:56px;padding-bottom:60px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:72px;align-items:center}
.hero-grid>*,.grid>*,.stats>*,.pricebox>*{min-width:0}
.lede{font-size:clamp(21px,1.8vw,25px);line-height:1.5;color:var(--ink-2);max-width:48ch}
.hero-grid>figure>img{max-width:300px;border:1px solid var(--line);
  border-radius:10px;box-shadow:var(--shadow)}

/* ── readout: three figures, colour-coded ─────────────────────── */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:20px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:30px 28px;border-top:5px solid var(--blue);box-shadow:var(--shadow);
  transition:transform .4s var(--ease),box-shadow .4s var(--ease)}
.stat:hover{transform:translateY(-5px);box-shadow:var(--shadow-lift)}
.stat b{display:block;font-family:"Instrument Serif",Georgia,serif;font-weight:400;
  font-size:70px;line-height:.9;color:var(--blue);font-variant-numeric:tabular-nums}
.stat span{display:block;font-size:18px;color:var(--ink);margin-top:12px;max-width:22ch}
.stat.green{border-top-color:var(--green)} .stat.green b{color:var(--green)}
.stat.pink{border-top-color:var(--pink)}  .stat.pink b{color:var(--pink)}

/* ── cards: each section its own hue ──────────────────────────── */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:28px 26px;box-shadow:var(--shadow);position:relative;overflow:hidden;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .4s var(--ease)}
.card::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;
  background:var(--accent,var(--blue));transform:scaleY(0);transform-origin:top;
  transition:transform .45s var(--ease)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift);border-color:var(--line-2)}
.card:hover::before{transform:scaleY(1)}
.card p{font-size:18px;margin:0;max-width:none;color:var(--ink-2)}
.card .tag{display:block;font-size:13px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent,var(--blue));margin-bottom:10px;font-weight:600}
.c1{--accent:var(--teal)}   .c2{--accent:var(--amber)}
.c3{--accent:var(--green)}  .c4{--accent:var(--blue)}
.c5{--accent:var(--violet)} .c6{--accent:var(--teal)}
.c7{--accent:var(--pink)}   .c8{--accent:var(--pink)}

/* ── plates ───────────────────────────────────────────────────── */
.spreads{display:grid;grid-template-columns:repeat(auto-fit,minmax(196px,1fr));gap:20px}
.spreads figure{margin:0}
.spreads img{width:100%;height:auto;display:block;border:1px solid var(--line-2);
  border-radius:10px;background:#fff;
  box-shadow:0 2px 4px rgba(21,24,35,.08),0 18px 40px -16px rgba(21,24,35,.32);
  transition:transform .5s var(--ease),box-shadow .5s var(--ease),border-color .5s var(--ease)}
.spreads figure:hover img{transform:translateY(-10px) scale(1.02);
  border-color:var(--blue);box-shadow:var(--shadow-lift)}
figcaption{font-size:16px;color:var(--ink-2);padding-top:12px}

/* ── price ────────────────────────────────────────────────────── */
.pricebox{background:var(--card);border:2px solid var(--blue);border-radius:22px;
  display:grid;grid-template-columns:1fr 1fr;overflow:hidden;box-shadow:var(--shadow-lift)}
.pricebox>div{padding:44px}
.pricebox>div:first-child{border-right:1px solid var(--line)}
.pricebox>div:last-child{background:linear-gradient(160deg,#F7F9FF,#FFFFFF)}
.amount{font-family:"Instrument Serif",Georgia,serif;font-weight:400;font-size:98px;
  line-height:.86;color:var(--blue);font-variant-numeric:tabular-nums}
.was{font-size:22px;color:var(--ink-2);text-decoration:line-through;margin-left:14px}
.pricebox ul{list-style:none;padding:0;margin:0}
.pricebox li{padding:14px 0 14px 34px;position:relative;font-size:18px;color:var(--ink);
  border-bottom:1px solid var(--line);max-width:none}
.pricebox li:last-child{border-bottom:0}
.pricebox li::before{content:"✓";position:absolute;left:0;top:14px;color:var(--green);
  font-weight:700}
.paytrust{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.paytrust span{border:1px solid var(--line-2);border-radius:999px;padding:9px 18px;
  font-size:16px;color:var(--ink-2);background:var(--card)}

/* ── verification block ───────────────────────────────────────── */
.verify{background:var(--card);border:2px solid var(--green);border-radius:22px;
  padding:36px 40px;display:grid;grid-template-columns:auto 1fr;gap:32px;
  align-items:center;box-shadow:var(--shadow)}
.verify .seal{font-family:"IBM Plex Mono",monospace;font-size:44px;line-height:1;
  font-weight:600;color:var(--green);white-space:nowrap}
.verify h3{font-family:"Instrument Serif",Georgia,serif;font-weight:400;font-size:30px;
  margin:0 0 8px}
.verify p{margin:0;font-size:19px;color:var(--ink);max-width:60ch}

/* ── faq ──────────────────────────────────────────────────────── */
details{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  margin-bottom:14px;padding:0 26px;box-shadow:var(--shadow);
  transition:border-color .3s var(--ease)}
details[open]{border-color:var(--blue);box-shadow:0 2px 6px rgba(21,24,35,.07),0 20px 44px -20px rgba(35,64,217,.28)}
summary{cursor:pointer;padding:24px 0;list-style:none;display:flex;
  justify-content:space-between;gap:22px;align-items:center;
  font-size:21px;font-weight:600;color:var(--ink)}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-family:"IBM Plex Mono",monospace;font-size:26px;
  color:var(--blue);line-height:1}
details[open] summary::after{content:"\2212"}
details p{padding-bottom:26px;margin:0;font-size:19px;color:var(--ink-2);max-width:66ch}

/* ── ledger (sources) ─────────────────────────────────────────── */
.legend{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;
  margin:34px 0 44px}
.legend div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;border-top:5px solid var(--green)}
.legend div:nth-child(3){border-top-color:var(--amber)}
.legend div:nth-child(4){border-top-color:var(--pink)}
.legend b{font-family:"IBM Plex Mono",monospace;font-size:24px;color:var(--green);
  display:block;margin-bottom:8px;font-weight:600}
.legend div:nth-child(3) b{color:var(--amber)}
.legend div:nth-child(4) b{color:var(--pink)}
.legend span{font-size:17px;color:var(--ink);line-height:1.5}

.ledger-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:16px;
  justify-content:space-between;border-bottom:2px solid var(--line);
  padding-bottom:12px;margin:48px 0 0}
.ledger-head h3{font-family:"Instrument Serif",Georgia,serif;font-weight:400;
  font-size:32px;margin:0}
.ledger-head span{font-family:"IBM Plex Mono",monospace;font-size:15px;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2)}

.claim{display:grid;grid-template-columns:80px 1fr 236px;gap:26px;padding:24px 0;
  border-bottom:1px solid var(--line);transition:background .3s var(--ease)}
.claim:hover{background:var(--card)}
.chip{font-family:"IBM Plex Mono",monospace;font-size:15px;font-weight:600;
  border:2px solid var(--green);color:var(--green);border-radius:8px;
  padding:6px 0;text-align:center;align-self:start}
.chip.c{border-color:var(--amber);color:var(--amber)}
.chip.d{border-color:var(--pink);color:var(--pink)}
.claim p{margin:0;font-size:19px;line-height:1.55;max-width:none}
.claim .meta{font-size:15px;color:var(--ink-2);line-height:1.6}

/* ── masthead ─────────────────────────────────────────────────── */
.masthead{position:fixed;top:0;left:0;right:0;z-index:70;
  background:rgba(244,246,251,.85);backdrop-filter:blur(16px) saturate(1.6);
  border-bottom:1px solid var(--line)}
.masthead .bar{max-width:1280px;margin:0 auto;padding:0 var(--pad);height:64px;
  display:flex;align-items:center;justify-content:space-between;gap:20px}
.wordmark{font-family:"Instrument Serif",Georgia,serif;font-size:22px;color:var(--ink);
  text-decoration:none!important;white-space:nowrap;
  display:inline-flex;align-items:center;gap:.28em;min-height:44px}
.wordmark em{font-style:italic;color:var(--blue)}
.mast-links{display:flex;align-items:center;gap:24px;font-size:16px}
.mast-links a{color:var(--ink-2);text-decoration:none!important;
  display:inline-flex;align-items:center;min-height:44px}
.mast-links a:hover{color:var(--blue)}
.mast-cta{background:var(--blue);color:#fff!important;border-radius:10px;
  padding:11px 20px;font-weight:600;
  transition:background .3s var(--ease),transform .3s var(--ease)}
.mast-cta:hover{background:var(--blue-dk);transform:translateY(-2px)}
body{padding-top:64px}
.progress{position:fixed;top:64px;left:0;height:3px;width:100%;z-index:71;
  transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--blue),var(--violet));will-change:transform}

/* ── form ─────────────────────────────────────────────────────── */
label{display:block;font-size:18px;font-weight:600;margin:28px 0 12px}
input[type=email]{width:100%;max-width:var(--measure);min-height:var(--tap);font:inherit;
  font-size:19px;padding:16px 20px;background:var(--card);border:2px solid var(--line-2);
  border-radius:var(--r);color:var(--ink);transition:border-color .3s var(--ease)}
input[type=email]:focus{outline:none;border-color:var(--blue)}
form .cta{margin-top:18px}

.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--blue);color:#fff;
  padding:16px 22px;text-decoration:none;font-weight:600}
.skip:focus{left:0}

footer{border-top:1px solid var(--line);padding:56px 0;font-size:17px;color:var(--ink-2);
  background:var(--card)}
footer p{max-width:none}
footer a{display:inline-block;padding:11px 0}

/* ── 3D book ──────────────────────────────────────────────────── */
.book-stage{perspective:2200px;perspective-origin:60% 40%;padding:16px 0 34px;
  display:flex;justify-content:center;margin:0}
.book{--w:310px;--h:465px;--t:46px;position:relative;width:var(--w);height:var(--h);
  transform-style:preserve-3d;transform:rotateX(6deg) rotateY(-27deg);
  transition:transform 1.1s var(--ease);will-change:transform}
.book-stage:hover .book{transform:rotateX(3deg) rotateY(-14deg)}
.book>*{position:absolute;border-radius:2px 5px 5px 2px}
.book .front{inset:0;transform:translateZ(calc(var(--t) / 2));overflow:hidden;
  box-shadow:inset -1px 0 0 rgba(255,255,255,.5),inset 2px 0 16px rgba(21,24,35,.28)}
.book .front img{width:100%;height:100%;display:block;object-fit:cover}
.book .back{inset:0;transform:translateZ(calc(var(--t) / -2)) rotateY(180deg);
  background:linear-gradient(145deg,#E8ECF7,#D6DCEC)}
.book .spine{top:0;left:calc(var(--t) / -2);width:var(--t);height:var(--h);
  transform:rotateY(-90deg);
  background:linear-gradient(90deg,#1A31A8,#2340D9 42%,#1A31A8);
  display:flex;align-items:center;justify-content:center;
  box-shadow:inset 0 0 22px rgba(0,0,0,.35)}
.book .spine span{font-family:"Instrument Serif",Georgia,serif;font-size:15px;color:#fff;
  white-space:nowrap;transform:rotate(90deg)}
.book .pages{top:4px;right:calc(var(--t) / -2 + 1px);width:var(--t);
  height:calc(var(--h) - 8px);transform:rotateY(90deg);
  background:repeating-linear-gradient(90deg,#FFFFFF 0 1px,#D8DCE8 1px 2px,#FBFCFF 2px 3.4px);
  box-shadow:inset 0 0 14px rgba(21,24,35,.26)}
.book .top{top:calc(var(--t) / -2);left:0;width:var(--w);height:var(--t);
  transform:rotateX(90deg);
  background:repeating-linear-gradient(0deg,#FFFFFF 0 1px,#D8DCE8 1px 2px,#FBFCFF 2px 3.4px)}
.book::after{content:"";position:absolute;left:-6%;right:-12%;bottom:-8%;height:32px;
  background:radial-gradient(50% 100% at 50% 0,rgba(21,24,35,.30),transparent 72%);
  transform:translateZ(-60px) rotateX(90deg);filter:blur(10px)}

/* ── motion ───────────────────────────────────────────────────── */
[data-rise]{opacity:0;transform:translateY(24px);
  transition:opacity .85s var(--ease),transform .85s var(--ease);
  transition-delay:var(--d,0ms)}
[data-rise].in{opacity:1;transform:none}
.no-js [data-rise]{opacity:1;transform:none}

.sticky{display:none}

@media (max-width:880px){
  :root{--pad:20px}
  section{padding:48px 0}
  header.hero{padding-top:32px;padding-bottom:40px}
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .book{--w:230px;--h:345px;--t:34px}
  .book-stage{perspective:1500px}
  .pricebox{grid-template-columns:1fr}
  .pricebox>div{padding:30px}
  .pricebox>div:first-child{border-right:0;border-bottom:1px solid var(--line)}
  .amount{font-size:74px}
  .verify{grid-template-columns:1fr;gap:16px;padding:28px}
  .cta{width:100%;padding:17px 14px;font-size:18px;
    white-space:normal;text-wrap:balance}
  .actions{flex-direction:column;gap:14px}
    .claim{grid-template-columns:64px 1fr;gap:16px}
  .claim .meta{grid-column:2}
  .masthead .bar{height:58px}
  body{padding-top:58px;padding-bottom:104px}
  .progress{top:58px}
  .mast-links{gap:12px;font-size:14px}
  .mast-links .hide-sm{display:none}
  .mast-cta{padding:10px 14px}
  .wordmark{font-size:17px;overflow:hidden;text-overflow:ellipsis;
    white-space:nowrap;max-width:50vw}
  .sticky{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;
    align-items:center;gap:14px;background:rgba(255,255,255,.95);
    backdrop-filter:blur(14px);border-top:1px solid var(--line);padding:12px var(--pad);
    box-shadow:0 -8px 30px -12px rgba(21,24,35,.25)}
  .sticky b{font-family:"Instrument Serif",Georgia,serif;font-size:32px;color:var(--blue)}
  .sticky .cta{margin:0;flex:1;min-height:54px;width:auto;font-size:18px;padding:14px 16px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-rise]{opacity:1!important;transform:none!important}
}