/* ==========================================================================
   Nitric Boost Ultra - design system
   Palette derived from the actual product jar: matte-black body, deep royal
   navy label band, gold ULTRA foil, magenta powder burst.
   ========================================================================== */

:root{
  --ink-900:#07090D;
  --ink-850:#0A0D13;
  --ink-800:#0E1219;
  --ink-750:#131822;
  --ink-700:#181E2A;
  --ink-600:#212938;
  --line:#252E3F;
  --line-soft:#1C2431;

  --navy-900:#16224C;
  --navy-800:#1D2C63;
  --navy-700:#26397E;
  --navy-600:#31489B;
  --navy-500:#4460BE;

  --gold-400:#FFE08A;
  --gold-500:#F2C14E;
  --gold-600:#D99B22;
  --gold-700:#A9740F;

  --magenta:#E11D8F;
  --magenta-soft:rgba(225,29,143,.14);

  --teal:#2DD4A7;

  --text:#EDF2FA;
  --text-soft:#B6C3D6;
  --text-mute:#8494AB;

  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;

  --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  --shadow:0 12px 32px -12px rgba(0,0,0,.7);
  --shadow-lg:0 32px 68px -24px rgba(0,0,0,.85);
  --glow-gold:0 0 0 1px rgba(242,193,78,.25), 0 18px 44px -18px rgba(242,193,78,.35);

  --grad-gold:linear-gradient(135deg,#FFE9A8 0%,#F2C14E 42%,#D99B22 100%);
  --grad-navy:linear-gradient(135deg,var(--navy-700) 0%,var(--navy-900) 100%);

  --wrap:1180px;
  --gutter:clamp(16px,4vw,32px);

  --font:"Jost","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
}
body{
  margin:0;
  font-family:var(--font);
  font-size:clamp(16px,.55vw + 15px,17.5px);
  line-height:1.72;
  color:var(--text-soft);
  background:var(--ink-900);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--gold-500);text-decoration:none}
a:hover{text-decoration:underline}
ul,ol{padding-left:1.25em}
li{margin:.35em 0}
p{margin:0 0 1.05em}
p:last-child{margin-bottom:0}
strong{color:var(--text);font-weight:600}
hr{border:0;border-top:1px solid var(--line);margin:2.5rem 0}

h1,h2,h3,h4,h5{
  color:var(--text);font-weight:700;line-height:1.16;
  margin:0 0 .6em;letter-spacing:-.02em;overflow-wrap:break-word;
}
h1{font-size:clamp(1.95rem,5.2vw,3.5rem);letter-spacing:-.035em}
h2{font-size:clamp(1.55rem,3.6vw,2.5rem);letter-spacing:-.028em}
h3{font-size:clamp(1.18rem,2vw,1.5rem)}
h4{font-size:clamp(1.02rem,1.4vw,1.16rem)}

:focus-visible{outline:3px solid var(--gold-500);outline-offset:3px;border-radius:4px}

.skip-link{
  position:absolute;left:-9999px;top:0;z-index:2000;
  background:var(--gold-500);color:#141414;padding:.8rem 1.3rem;
  font-weight:700;border-radius:0 0 var(--radius-sm) 0;
}
.skip-link:focus{left:0}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- layout ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-width:880px}
.section{padding:clamp(52px,7vw,96px) 0;position:relative}
.section--tint{background:linear-gradient(180deg,var(--ink-850) 0%,var(--ink-800) 100%)}
.section--panel{background:var(--ink-850)}
.section-head{max-width:780px;margin:0 0 clamp(28px,4vw,46px)}
.section-head--center{margin-inline:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5em;
  font-size:.73rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--gold-500);margin:0 0 .9rem;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--grad-gold);border-radius:2px}
.section-head--center .eyebrow{justify-content:center}
.lede{font-size:clamp(1.03rem,1.3vw,1.16rem);color:var(--text-soft)}

.grid{display:grid;gap:clamp(16px,2.2vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(290px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(272px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(214px,1fr))}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.6em;
  padding:.92em 1.65em;border-radius:999px;border:1px solid transparent;
  font-family:inherit;font-size:1rem;font-weight:700;line-height:1.25;
  text-align:center;cursor:pointer;text-decoration:none!important;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,color .18s ease;
  max-width:100%;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--gold{background:var(--grad-gold);color:#191307;box-shadow:var(--glow-gold)}
.btn--gold:hover{box-shadow:0 0 0 1px rgba(242,193,78,.4),0 24px 52px -18px rgba(242,193,78,.55)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--gold-500);color:var(--gold-400)}
.btn--lg{padding:1.06em 2.1em;font-size:clamp(1rem,1.3vw,1.1rem)}
.btn--block{display:flex;width:100%}
.btn-note{font-size:.83rem;color:var(--text-mute);margin:.85rem 0 0;line-height:1.55}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,9,13,.86);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-stuck{box-shadow:0 12px 34px -20px rgba(0,0,0,.95);background:rgba(7,9,13,.96)}
.nav{display:flex;align-items:center;gap:16px;min-height:70px;padding-block:10px}
.brand{display:inline-flex;align-items:center;gap:11px;flex-shrink:0;text-decoration:none!important}
.brand__mark{
  width:38px;height:38px;border-radius:11px;flex-shrink:0;
  background:var(--grad-navy);border:1px solid rgba(242,193,78,.35);
  display:grid;place-items:center;overflow:hidden;
}
.brand__mark img{
  width:100%;height:100%;object-fit:contain;padding:3px;
}
.brand__name{display:flex;flex-direction:column;line-height:1.05}
.brand__name b{color:var(--text);font-size:1.02rem;font-weight:700;letter-spacing:-.02em}
.brand__name span{
  color:var(--gold-500);font-size:.6rem;font-weight:700;
  letter-spacing:.26em;text-transform:uppercase;
}
.nav__panel{display:contents}
.nav__links{
  display:flex;align-items:center;gap:4px;list-style:none;margin:0 0 0 auto;padding:0;
}
.nav__links a{
  display:block;padding:.5em .78em;border-radius:8px;
  color:var(--text-soft);font-size:.93rem;font-weight:500;text-decoration:none!important;
  transition:color .16s ease,background .16s ease;white-space:nowrap;
}
.nav__links a:hover,.nav__links a:focus-visible{color:var(--text);background:var(--ink-700)}
.nav__cta{flex-shrink:0}
.nav__cta .btn{padding:.72em 1.25em;font-size:.92rem}
.nav__toggle{
  display:none;margin-left:auto;width:44px;height:44px;flex-shrink:0;
  background:var(--ink-750);border:1px solid var(--line);border-radius:11px;
  cursor:pointer;padding:0;place-items:center;
}
.nav__toggle span{
  display:block;width:19px;height:2px;background:var(--text);border-radius:2px;
  position:relative;transition:background .2s ease;
}
.nav__toggle span::before,.nav__toggle span::after{
  content:"";position:absolute;left:0;width:19px;height:2px;background:var(--text);
  border-radius:2px;transition:transform .24s ease;
}
.nav__toggle span::before{top:-6px}
.nav__toggle span::after{top:6px}
.nav__toggle[aria-expanded="true"] span{background:transparent}
.nav__toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg)}

@media (max-width:1060px){
  .nav__links a{padding:.5em .58em;font-size:.87rem}
  .nav__cta .btn{padding:.7em 1.05em;font-size:.86rem}
}
@media (max-width:920px){
  .site-header{position:sticky}
  .nav{position:relative;flex-wrap:wrap}
  .nav__toggle{display:grid}
  .nav__panel{
    display:none;position:absolute;left:calc(var(--gutter) * -1);right:calc(var(--gutter) * -1);
    top:100%;background:var(--ink-850);border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);padding:14px var(--gutter) 22px;
    box-shadow:0 26px 44px -22px rgba(0,0,0,.95);
  }
  .nav__panel.is-open{display:block}
  .nav__links{flex-direction:column;align-items:stretch;gap:2px;margin:0}
  .nav__links a{padding:.78em .8em;font-size:1rem;border-radius:10px}
  .nav__cta{margin-top:14px}
  .nav__cta .btn{display:flex;width:100%;font-size:1rem;padding:.9em 1.3em}
}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:clamp(40px,6vw,84px) 0 clamp(48px,7vw,88px);
  background:
    radial-gradient(1100px 560px at 78% 8%,rgba(49,72,155,.30),transparent 62%),
    radial-gradient(760px 420px at 8% 92%,rgba(225,29,143,.13),transparent 66%),
    linear-gradient(180deg,var(--ink-900) 0%,var(--ink-850) 100%);
}
.hero::after{
  content:"";position:absolute;inset:auto 0 0 0;height:1px;
  background:linear-gradient(90deg,transparent,var(--line),transparent);
}
.hero__grid{
  display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);
  gap:clamp(28px,5vw,64px);align-items:center;
}
.hero__title{margin-bottom:.55em}
.hero__title .accent{
  background:var(--grad-gold);-webkit-background-clip:text;background-clip:text;
  color:transparent;
}
.hero__sub{font-size:clamp(1.02rem,1.35vw,1.18rem);margin-bottom:1.5em;max-width:56ch}
.hero__media{position:relative;display:grid;place-items:center}
.hero__media img{
  width:100%;max-width:460px;height:auto;
  filter:drop-shadow(0 42px 56px rgba(0,0,0,.72));
}
.hero__glow{
  position:absolute;inset:8% 6%;z-index:-1;border-radius:50%;
  background:radial-gradient(circle,rgba(49,72,155,.5),transparent 68%);
  filter:blur(46px);
}
.chips{display:flex;flex-wrap:wrap;gap:9px;list-style:none;margin:0 0 1.7em;padding:0}
.chips li{
  display:inline-flex;align-items:center;gap:.5em;
  padding:.44em .95em;border-radius:999px;
  background:var(--ink-750);border:1px solid var(--line);
  font-size:.83rem;font-weight:600;color:var(--text-soft);
}
.chips li svg{flex-shrink:0;color:var(--gold-500)}

@media (max-width:880px){
  .hero__grid{grid-template-columns:1fr;text-align:center}
  .hero__sub{margin-inline:auto}
  .chips{justify-content:center}
  .btn-row{justify-content:center}
  .hero__media{order:-1}
  .hero__media img{max-width:300px}
}

/* ---------- at-a-glance stats ---------- */
.facts{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:1px;background:var(--line);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
}
.fact{background:var(--ink-800);padding:clamp(18px,2.4vw,26px)}
.fact dt{
  font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--gold-500);margin-bottom:.5em;
}
.fact dd{margin:0;color:var(--text);font-weight:600;font-size:1.02rem;line-height:1.5}
.fact dd small{display:block;font-weight:400;color:var(--text-mute);font-size:.82rem;margin-top:.3em;line-height:1.5}

/* ---------- cards ---------- */
.card{
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius);padding:clamp(20px,2.6vw,30px);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
  min-width:0;
}
.card:hover{transform:translateY(-3px);border-color:#33405A;box-shadow:var(--shadow)}
.card h3,.card h4{margin-bottom:.5em}
.card p{font-size:.96rem}
.card__icon{
  width:46px;height:46px;border-radius:13px;margin-bottom:1rem;
  background:var(--grad-navy);border:1px solid rgba(242,193,78,.28);
  display:grid;place-items:center;color:var(--gold-500);
}
.card--flat:hover{transform:none;box-shadow:none;border-color:var(--line)}

/* answer-first callout (AEO) */
.answer{
  background:linear-gradient(135deg,rgba(38,57,126,.34),rgba(10,13,19,.5));
  border:1px solid #2C3A5C;border-left:4px solid var(--gold-500);
  border-radius:var(--radius);padding:clamp(20px,2.8vw,30px);
  margin:0 0 1.8em;
}
.answer p{color:var(--text);font-size:clamp(1rem,1.25vw,1.1rem);line-height:1.65}
.answer p:last-child{margin-bottom:0}
.answer__label{
  display:block;font-size:.7rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:var(--gold-500);margin-bottom:.7em;
}

/* notices */
.notice{
  border-radius:var(--radius);padding:clamp(18px,2.4vw,26px);
  border:1px solid var(--line);background:var(--ink-750);
  font-size:.94rem;line-height:1.7;
}
.notice h3,.notice h4{font-size:1.05rem;margin-bottom:.55em}
.notice--warn{
  border-color:rgba(225,29,143,.4);
  background:linear-gradient(135deg,var(--magenta-soft),rgba(10,13,19,.6));
}
.notice--gold{
  border-color:rgba(242,193,78,.38);
  background:linear-gradient(135deg,rgba(242,193,78,.1),rgba(10,13,19,.6));
}
.notice p:last-child{margin-bottom:0}

/* ---------- ingredient cards ---------- */
.ing{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;min-width:0;
}
.ing__head{
  padding:clamp(18px,2.4vw,26px);
  background:linear-gradient(135deg,rgba(38,57,126,.4),transparent);
  border-bottom:1px solid var(--line);
}
.ing__head h3{margin:0 0 .4em;font-size:clamp(1.14rem,1.8vw,1.34rem)}
.ing__tag{
  display:inline-block;padding:.28em .8em;border-radius:999px;
  font-size:.68rem;font-weight:700;letter-spacing:.11em;text-transform:uppercase;
}
.ing__tag--confirmed{background:rgba(45,212,167,.14);color:var(--teal);border:1px solid rgba(45,212,167,.35)}
.ing__tag--unconfirmed{background:rgba(132,148,171,.13);color:var(--text-mute);border:1px solid var(--line)}
.ing__body{padding:clamp(18px,2.4vw,26px);display:grid;gap:1.05rem;flex:1}
.ing__row{display:grid;gap:.28rem}
.ing__row dt{
  font-size:.69rem;font-weight:700;letter-spacing:.13em;text-transform:uppercase;
  color:var(--gold-500);
}
.ing__row dd{margin:0;font-size:.94rem;line-height:1.68}
.ing__foot{
  padding:0 clamp(18px,2.4vw,26px) clamp(18px,2.4vw,26px);
  display:flex;flex-wrap:wrap;gap:8px;
}
.ref-pill{
  display:inline-flex;align-items:center;gap:.35em;
  padding:.32em .78em;border-radius:999px;
  background:var(--ink-700);border:1px solid var(--line);
  font-size:.76rem;font-weight:600;color:var(--text-soft);text-decoration:none!important;
  transition:border-color .16s ease,color .16s ease;
}
.ref-pill:hover{border-color:var(--gold-500);color:var(--gold-400)}

/* ---------- research cards ---------- */
.research-group{margin-bottom:clamp(34px,4.5vw,54px)}
.research-group:last-child{margin-bottom:0}
.research-group__head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:.5em 1em;
  padding-bottom:.7em;margin-bottom:clamp(18px,2.4vw,26px);
  border-bottom:1px solid var(--line);
}
.research-group__head h3{margin:0;font-size:clamp(1.1rem,1.7vw,1.35rem)}
.research-group__head span{font-size:.85rem;color:var(--text-mute)}

.rcard{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2.4vw,26px);display:flex;flex-direction:column;gap:.85rem;
  transition:border-color .22s ease,transform .22s ease,box-shadow .22s ease;min-width:0;
}
.rcard:hover{border-color:#33405A;transform:translateY(-3px);box-shadow:var(--shadow)}
.rcard__tags{display:flex;flex-wrap:wrap;gap:6px}
.tag{
  display:inline-block;padding:.26em .72em;border-radius:6px;
  font-size:.67rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  background:var(--ink-700);border:1px solid var(--line);color:var(--text-mute);
}
.tag--type{background:rgba(49,72,155,.2);border-color:rgba(68,96,190,.42);color:#9DB4EC}
.tag--topic{background:rgba(242,193,78,.11);border-color:rgba(242,193,78,.3);color:var(--gold-500)}
.rcard__title{
  margin:0;font-size:1.02rem;line-height:1.4;font-weight:700;color:var(--text);
  letter-spacing:-.012em;
}
.rcard__meta{
  margin:0;font-size:.82rem;line-height:1.6;color:var(--text-mute);
  padding-bottom:.85rem;border-bottom:1px solid var(--line-soft);
}
.rcard__meta em{color:var(--text-soft);font-style:normal}
.rcard__body{margin:0;font-size:.92rem;line-height:1.68}
.rcard__limit{
  display:none !important;
}
.rcard__limit b{color:var(--text-soft);font-weight:700}
.rcard__link{
  margin-top:auto;padding-top:.35rem;
  display:inline-flex;align-items:center;gap:.45em;align-self:flex-start;
  font-size:.88rem;font-weight:700;color:var(--gold-500);text-decoration:none!important;
}
.rcard__link:hover{color:var(--gold-400)}
.rcard__link span{transition:transform .18s ease}
.rcard__link:hover span{transform:translateX(3px)}

/* ---------- FAQ accordion ---------- */
.faq{display:grid;gap:12px}
.faq__item{
  background:var(--ink-800);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;
}
.faq__item.is-open{border-color:rgba(242,193,78,.42)}
.faq__q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:16px;
  padding:clamp(16px,2vw,22px) clamp(18px,2.2vw,26px);
  background:none;border:0;cursor:pointer;text-align:left;
  font-family:inherit;font-size:clamp(1rem,1.3vw,1.08rem);font-weight:600;
  color:var(--text);line-height:1.5;
}
.faq__q:hover{color:var(--gold-400)}
.faq__icon{
  flex-shrink:0;width:24px;height:24px;margin-top:2px;position:relative;
}
.faq__icon::before,.faq__icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--gold-500);
  border-radius:2px;transform:translate(-50%,-50%);transition:transform .24s ease;
}
.faq__icon::before{width:13px;height:2px}
.faq__icon::after{width:2px;height:13px}
.faq__item.is-open .faq__icon::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq__a{display:none;padding:0 clamp(18px,2.2vw,26px) clamp(18px,2.2vw,26px)}
.faq__item.is-open .faq__a{display:block}
.faq__a p{font-size:.96rem}
.faq__a p:first-child{border-top:1px solid var(--line-soft);margin-top:0;padding-top:1em}

/* ---------- pricing ---------- */
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(258px,1fr));gap:clamp(16px,2.2vw,24px);align-items:start}
.plan{
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(22px,2.8vw,32px);display:flex;flex-direction:column;gap:1rem;
  position:relative;min-width:0;
}
.plan--featured{
  border-color:rgba(242,193,78,.5);
  background:linear-gradient(180deg,rgba(242,193,78,.07),var(--ink-800) 42%);
  box-shadow:var(--glow-gold);
}
.plan__flag{
  position:absolute;top:0;left:50%;transform:translate(-50%,-50%);
  background:var(--grad-gold);color:#191307;
  padding:.34em 1.1em;border-radius:999px;
  font-size:.68rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase;
  white-space:nowrap;
}
.plan__name{
  font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:var(--text-mute);margin:0;
}
.plan__price{display:flex;align-items:baseline;gap:.3em;color:var(--text);margin:0}
.plan__price b{font-size:clamp(2.2rem,4.2vw,2.9rem);font-weight:800;letter-spacing:-.04em;line-height:1}
.plan__price span{font-size:.9rem;color:var(--text-mute);font-weight:500}
.plan__total{margin:0;font-size:.92rem;color:var(--text-soft)}
.plan__list{list-style:none;margin:0;padding:0;display:grid;gap:.6rem;font-size:.91rem}
.plan__list li{display:flex;gap:.6em;align-items:flex-start;margin:0}
.plan__list li::before{
  content:"";flex-shrink:0;width:17px;height:17px;margin-top:.28em;border-radius:50%;
  background:rgba(45,212,167,.16);border:1px solid rgba(45,212,167,.45);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M2.5 6.2l2.3 2.3 4.7-4.7' stroke='%232DD4A7' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-size:11px;background-position:center;background-repeat:no-repeat;
}
.plan__list li.is-off{color:var(--text-mute)}
.plan__list li.is-off::before{
  background-color:rgba(132,148,171,.1);border-color:var(--line);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' fill='none'%3E%3Cpath d='M3.4 3.4l5.2 5.2M8.6 3.4L3.4 8.6' stroke='%238494AB' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E");
}
.plan .btn{margin-top:auto}

/* ---------- steps ---------- */
.steps{counter-reset:step;display:grid;gap:clamp(14px,2vw,20px)}
.step{
  display:grid;grid-template-columns:auto 1fr;gap:clamp(14px,2vw,22px);align-items:start;
  background:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
  padding:clamp(18px,2.4vw,26px);
}
.step::before{
  counter-increment:step;content:counter(step);
  width:42px;height:42px;border-radius:12px;flex-shrink:0;
  background:var(--grad-navy);border:1px solid rgba(242,193,78,.3);
  color:var(--gold-500);font-weight:800;font-size:1.05rem;
  display:grid;place-items:center;
}
.step h3{font-size:1.08rem;margin-bottom:.35em}
.step p{font-size:.94rem;margin:0}

/* ---------- CTA band ---------- */
.cta-band{
  border-radius:var(--radius-lg);overflow:hidden;position:relative;
  border:1px solid rgba(242,193,78,.28);
  background:
    radial-gradient(760px 300px at 82% 12%,rgba(49,72,155,.4),transparent 66%),
    linear-gradient(135deg,var(--ink-750),var(--ink-850));
  padding:clamp(28px,4.5vw,54px);
}
.cta-band__grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:clamp(22px,4vw,48px);align-items:center}
.cta-band h2{margin-bottom:.4em}
.cta-band p{margin-bottom:0}
.cta-band__media img{width:min(220px,42vw);filter:drop-shadow(0 26px 34px rgba(0,0,0,.7))}
@media (max-width:820px){
  .cta-band__grid{grid-template-columns:1fr;text-align:center}
  .cta-band__media{order:-1;display:grid;place-items:center}
  .cta-band .btn-row{justify-content:center}
}

/* ---------- references list ---------- */
.reflist{counter-reset:ref;list-style:none;margin:0;padding:0;display:grid;gap:.9rem}
.reflist li{
  counter-increment:ref;display:grid;grid-template-columns:auto minmax(0,1fr);gap:.85em;
  font-size:.89rem;line-height:1.6;color:var(--text-soft);margin:0;
  padding-bottom:.9rem;border-bottom:1px solid var(--line-soft);
  overflow-wrap:break-word;word-break:break-word;
}
.reflist li:last-child{border-bottom:0;padding-bottom:0}
.reflist li::before{
  content:counter(ref) ".";color:var(--gold-500);font-weight:700;font-variant-numeric:tabular-nums;
}
.reflist em{font-style:italic;color:var(--text)}
.reflist a{word-break:break-word}

/* ---------- disclosure / footer ---------- */
.disclosure{
  border-top:1px solid var(--line);background:var(--ink-850);
  padding:clamp(34px,4.5vw,54px) 0;font-size:.87rem;line-height:1.72;color:var(--text-mute);
}
.disclosure h2{font-size:1.14rem;margin-bottom:.6em}
.disclosure p{margin-bottom:1em}

.site-footer{background:var(--ink-900);border-top:1px solid var(--line);padding:clamp(38px,5vw,60px) 0 28px}
.footer__grid{
  display:grid;grid-template-columns:1fr;
  gap:clamp(24px,4vw,40px);margin-bottom:34px;
}
@media (min-width:600px){
  .footer__grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .footer__about{grid-column:1 / -1}
}
@media (min-width:900px){
  .footer__grid{grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr))}
  .footer__about{grid-column:auto}
}
.footer__col h3{font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-500);margin-bottom:1.1em}
.footer__col ul{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.footer__col li{margin:0}
.footer__col a{color:var(--text-soft);font-size:.9rem;text-decoration:none}
.footer__col a:hover{color:var(--gold-400);text-decoration:underline}
.footer__about p{font-size:.88rem;color:var(--text-mute);max-width:44ch;margin-top:1rem}
.footer__bottom{
  border-top:1px solid var(--line-soft);padding-top:22px;
  display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between;align-items:center;
  font-size:.83rem;color:var(--text-mute);
}

/* ---------- scroll to top ---------- */
.to-top{
  position:fixed;right:18px;bottom:18px;z-index:900;
  width:46px;height:46px;border-radius:50%;
  background:var(--grad-gold);color:#191307;border:0;cursor:pointer;
  display:grid;place-items:center;box-shadow:var(--shadow);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- reveal animation ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none}}

/* ---------- prose (legal pages) ---------- */
.prose{max-width:78ch}
.prose h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin-top:2em}
.prose h3{font-size:clamp(1.08rem,1.7vw,1.24rem);margin-top:1.7em}
.prose h2:first-child,.prose h3:first-child{margin-top:0}
.prose ul,.prose ol{margin-bottom:1.05em}
.page-hero{
  padding:clamp(46px,6vw,80px) 0 clamp(28px,4vw,44px);
  background:
    radial-gradient(760px 380px at 76% 6%,rgba(49,72,155,.26),transparent 64%),
    linear-gradient(180deg,var(--ink-900),var(--ink-850));
  border-bottom:1px solid var(--line);
}
.crumbs{display:flex;flex-wrap:wrap;gap:.4em;list-style:none;margin:0 0 1.1rem;padding:0;font-size:.84rem;color:var(--text-mute)}
.crumbs li{margin:0}
.crumbs li+li::before{content:"/";margin-right:.5em;color:var(--line)}
.crumbs a{color:var(--text-mute)}
.crumbs a:hover{color:var(--gold-400)}
.updated{font-size:.83rem;color:var(--text-mute);margin:0}

/* ---------- small screens ---------- */
@media (max-width:420px){
  .btn{width:100%}
  .btn-row{gap:10px}
  .btn-row .btn{width:100%}
  .nav__cta .btn{width:100%}
}
@media (max-width:360px){
  :root{--gutter:14px}
  .brand__name b{font-size:.94rem}
}

/* table wrapper safety */
.scroll-x{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* Product shots that have an opaque white background (palette PNGs).
   Presented on a deliberate light panel so they read as designed, not broken. */
.shot{
  background:linear-gradient(160deg,#FFFFFF 0%,#EEF2F8 100%);
  border:1px solid rgba(242,193,78,.28);
  border-radius:var(--radius-lg);
  padding:clamp(14px,2.2vw,26px);
  box-shadow:0 26px 54px -24px rgba(0,0,0,.8);
  display:block;width:100%;
}
.shot img{width:100%;height:auto;mix-blend-mode:multiply;border-radius:6px}

/* spec table (Quick Review summary box) */
.spec{margin:0;display:grid;gap:0}
.spec > div{
  display:grid;grid-template-columns:minmax(0,11em) minmax(0,1fr);gap:.4em 1.1em;
  padding:.62em 0;border-bottom:1px solid var(--line-soft);
}
.spec > div:last-child{border-bottom:0}
.spec dt{
  font-size:.72rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;
  color:var(--gold-500);align-self:center;
}
.spec dd{margin:0;color:var(--text);font-size:.95rem;line-height:1.55;overflow-wrap:break-word}
@media (max-width:560px){
  .spec > div{grid-template-columns:1fr;gap:.15em;padding:.7em 0}
}

/* research card meta (authors / journal / year) */
.rmeta{
  margin:0;display:grid;gap:.3em;
  padding-bottom:.85rem;border-bottom:1px solid var(--line-soft);
}
.rmeta > div{display:grid;grid-template-columns:minmax(0,5.2em) minmax(0,1fr);gap:.7em}
.rmeta dt{
  font-size:.66rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;
  color:var(--text-mute);align-self:center;
}
.rmeta dd{margin:0;font-size:.83rem;line-height:1.5;color:var(--text-soft);overflow-wrap:break-word}

/* figure images: always shrink to the container, never exceed their cap */
.fig-img{width:100%;height:auto;margin-inline:auto}
figure{margin-inline:0}
figcaption{max-width:62ch;margin-inline:auto}

/* print */
@media print{
  .site-header,.to-top,.nav__toggle,.cta-band,.btn{display:none!important}
  body{background:#fff;color:#000}
}