/* ==================================================================
   Sustarox — "Royale Burgundy & Brass" theme
   Deep burgundy-tinted charcoal, royal burgundy, warm brass accents,
   cream paper tone. A confident, premium comfort-cream feel — clearly
   distinct from Rhino Gold (emerald/charcoal/gold), Duston Gel
   (sapphire-ink/ember), Motion Energy (warm orange/teal) and the
   clinical navy/sage Cholestoff.
   Mobile-first, 320px+, no horizontal scroll.
   ================================================================== */

:root{
  --ink:#150b10;                 /* burgundy-tinted charcoal base */
  --ink-2:#1d0f15;
  --ink-3:#271319;
  --panel:#2a1620;
  --panel-2:#33202a;             /* deep royal burgundy panel */
  --burgundy:#7a1f2e;            /* deep royal burgundy */
  --burgundy-2:#4a1018;
  --line:rgba(224,179,146,.16);
  --paper:#f7efe3;
  --paper-dim:#d8c9b4;
  --muted:#a8907a;
  --brass:#d8a64f;
  --brass-2:#f0c878;
  --grad:linear-gradient(120deg,#f3cd83 0%,#d8a64f 50%,#b8883c 100%);
  --shadow:0 20px 45px -25px rgba(0,0,0,.72);
  --r:22px;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  background:
    radial-gradient(1100px 540px at 85% -5%,rgba(242,200,120,.12),transparent 60%),
    radial-gradient(900px 520px at -8% 10%,rgba(122,31,46,.28),transparent 62%),
    var(--ink);
  color:var(--paper);
  line-height:1.65;
  overflow-x:hidden;
}
img,svg{max-width:100%;vertical-align:middle}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;font-weight:700;line-height:1.15;color:var(--paper)}
.wrap{width:min(1120px,100% - 2.4rem);margin-inline:auto}

/* ---------- Buttons ---------- */
.cta-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  background:var(--grad);color:#34100f;font-weight:700;
  padding:.85rem 1.7rem;border-radius:999px;font-size:.98rem;
  box-shadow:0 12px 28px -12px rgba(216,166,79,.6);
  border:1px solid rgba(255,255,255,.18);
  transition:transform .15s ease,box-shadow .15s ease,opacity .15s ease;
}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px -12px rgba(240,200,120,.75)}
.cta-btn svg{width:16px;height:16px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;
  background:rgba(21,11,16,.84);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.85rem 0}
.brand{font-family:Georgia,serif;font-weight:700;font-size:1.3rem;letter-spacing:.03em}
.brand::before{content:"◆";color:var(--brass);margin-right:.42rem;font-size:.85em;vertical-align:middle}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:38px;
  cursor:pointer;flex:none;align-items:center;flex-direction:column;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brass);border-radius:2px;transition:transform .18s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav{display:flex;align-items:center;gap:1.5rem}
.nav a:not(.cta-btn){font-size:.95rem;color:var(--paper-dim);transition:color .15s}
.nav a:not(.cta-btn):hover{color:var(--brass)}

/* ---------- Hero ---------- */
.hero{padding:3.6rem 0 3rem;position:relative;overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:2.8rem;align-items:center}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--brass);margin-bottom:.9rem;padding-bottom:.35rem;border-bottom:2px solid var(--brass)}
.hero-copy{display:flex;flex-direction:column;align-items:flex-start}
.hero h1{font-size:clamp(2.1rem,5.4vw,3.3rem);margin-bottom:1.1rem}
.hero .lead{color:var(--paper-dim);font-size:1.06rem;max-width:34rem;margin-bottom:1.15rem}
.hot{display:inline-flex;align-items:center;gap:.5rem;color:var(--brass);font-weight:600;font-size:.95rem;margin-bottom:1.5rem}
.hot::before{content:"✧";color:var(--brass)}
.hero-actions{margin-bottom:1.4rem}
.trust-row{display:flex;flex-wrap:wrap;gap:.55rem}
.trust-row span{display:inline-flex;align-items:center;gap:.45rem;font-size:.84rem;color:var(--paper-dim);
  background:var(--panel);border:1px solid var(--line);padding:.38rem .8rem;border-radius:999px}
.trust-row svg{width:13px;height:13px;color:var(--brass)}
.hero-visual{display:flex;justify-content:center;filter:drop-shadow(0 30px 42px rgba(216,166,79,.2))}
.hero-visual svg{width:min(300px,80%)}

/* ---------- Sections ---------- */
section{padding:3.4rem 0}
.sec-head{max-width:46rem;margin-bottom:2.2rem}
.kicker{font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--brass);margin-bottom:.7rem}
.sec-head h2{font-size:clamp(1.6rem,3.6vw,2.2rem);margin-bottom:.7rem}
.sec-head p{color:var(--muted);font-size:1rem}

/* ---------- How (application-first) ---------- */
#how{background:var(--ink-2);border-block:1px solid var(--line)}
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
.step{background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'><circle cx='1' cy='1' r='1' fill='%23b8883c' fill-opacity='.12'/></svg>"),var(--panel);
  border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;position:relative;overflow:hidden}
.num{width:42px;height:42px;border-radius:50%;font-family:Georgia,serif;font-weight:700;font-size:1.2rem;
  color:#34100f;background:var(--grad);display:flex;align-items:center;justify-content:center;margin-bottom:1rem;
  box-shadow:0 8px 18px -8px rgba(216,166,79,.5)}
.step h3{font-size:1.05rem;margin-bottom:.45rem}
.step p{color:var(--muted);font-size:.93rem}
.tip{color:var(--brass);font-size:.88rem;margin-top:1.4rem;text-align:left;border-left:3px solid var(--brass);
  background:var(--panel);border-radius:0 var(--r) var(--r) 0;padding:.9rem 1.1rem}

/* ---------- About split ---------- */
#about{background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:2.4rem;align-items:start}
.checklist{list-style:none;display:grid;gap:.85rem;margin-top:.6rem}
.checklist li{display:flex;align-items:flex-start;gap:.7rem;color:var(--paper-dim);font-size:1rem}
.checklist svg{width:18px;height:18px;color:var(--brass);margin-top:.25rem;flex:none}
.split .cta-btn{margin-top:1.6rem}

/* ---------- Ingredients ---------- */
#ingredients{background:var(--ink-2);border-block:1px solid var(--line)}
.ing-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}
.ing-card{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--r);padding:1.25rem;position:relative}
.ing-card::before{content:"";position:absolute;top:0;left:1.25rem;right:1.25rem;height:2px;
  background:var(--grad);border-radius:2px}
.ing-card h3{font-size:1rem;color:var(--brass-2);margin-bottom:.4rem}
.ing-card p{color:var(--muted);font-size:.88rem}

/* ---------- Benefits ---------- */
#benefits{background:var(--ink-2);border-block:1px solid var(--line)}
.ben-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.1rem}
.ben-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:1.5rem;
  display:flex;gap:1rem;align-items:flex-start;transition:transform .18s ease,border-color .18s ease}
.ben-card:hover{transform:translateY(-4px);border-color:var(--brass)}
.ic{width:44px;height:44px;border-radius:12px;background:var(--grad);display:flex;align-items:center;justify-content:center;
  flex:none;margin:0;box-shadow:0 8px 18px -8px rgba(216,166,79,.5)}
.ic svg{width:20px;height:20px;color:#34100f}
.ben-card h3{font-size:1.08rem;margin-bottom:.4rem}
.ben-card p{color:var(--muted);font-size:.93rem}

/* ---------- Quote ---------- */
.quote{text-align:center;
  background:radial-gradient(720px 330px at 50% 0%,rgba(216,166,79,.13),transparent 70%),var(--ink-2);
  border-block:1px solid var(--line)}
.quote h2{font-size:clamp(1.7rem,4vw,2.4rem);max-width:38rem;margin:0 auto 1rem}
.quote p{color:var(--muted);max-width:34rem;margin:0 auto 1.5rem}

/* ---------- FAQ ---------- */
.faq-box{display:grid;gap:.8rem;margin-top:1rem}
.faq-box details{background:var(--panel);border:1px solid var(--line);border-radius:16px;overflow:hidden}
.faq-box summary{cursor:pointer;padding:1rem 1.2rem;font-weight:600;font-family:Georgia,serif;font-size:1.03rem;
  color:var(--paper);position:relative;list-style:none}
.faq-box summary::-webkit-details-marker{display:none}
.faq-box summary::after{content:"+";position:absolute;right:1.2rem;color:var(--brass);font-size:1.3rem;transition:transform .18s}
.faq-box details[open] summary::after{transform:rotate(45deg)}
.faq-box .a{padding:0 1.2rem 1.1rem;color:var(--muted);font-size:.95rem}

/* ---------- CTA band ---------- */
.cta-band{text-align:center;
  background:radial-gradient(720px 330px at 50% 100%,rgba(122,31,46,.55),transparent 70%),var(--ink-2);
  border-block:1px solid var(--line)}
.cta-band h2{font-size:clamp(1.7rem,4vw,2.4rem);margin-bottom:1rem}
.cta-band p{color:var(--paper-dim);max-width:34rem;margin:0 auto 1.6rem}

/* ---------- Simple pages ---------- */
.simple{padding:3.6rem 0;min-height:55vh}
.simple h1{font-size:clamp(1.8rem,4vw,2.4rem);margin-bottom:1.4rem}
.simple p{color:var(--paper-dim);margin-bottom:1rem;max-width:44rem}
.cta-wrapper{text-align:center;margin-top:2rem}
.cta-wrapper .cta-btn{margin-inline:auto}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);border-top:1px solid var(--line);padding:2.8rem 0 2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;margin:1.6rem 0 1.4rem}
.footer-grid h4{font-family:Georgia,serif;font-size:1.05rem;color:var(--brass);margin-bottom:.8rem}
.footer-grid p{color:var(--muted);font-size:.9rem}
.footer-grid ul{list-style:none;display:grid;gap:.5rem}
.footer-grid li a{color:var(--paper-dim);font-size:.92rem;transition:color .15s}
.footer-grid li a:hover{color:var(--brass)}
.footer-bot{border-top:1px solid var(--line);padding-top:1.2rem;color:var(--muted);font-size:.85rem}

/* ---------- Language block ---------- */
.lang-block{margin:0}
.lang-label{font-size:.78rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:.6rem}
.lang-list{display:flex;flex-wrap:wrap;gap:.45rem}
.lang-link{font-size:.86rem;color:var(--paper-dim);background:var(--panel);border:1px solid var(--line);
  padding:.35rem .75rem;border-radius:999px;transition:all .15s}
.lang-link:hover{color:var(--brass);border-color:var(--brass)}
.lang-link.active{background:var(--grad);color:#34100f;font-weight:700;border-color:transparent}

/* ---------- Responsive: tablet ---------- */
@media(max-width:980px){
  .hero-in{grid-template-columns:1fr;gap:1.8rem}
  .hero-visual{order:-1}.hero-visual svg{width:min(240px,70%)}
  .ben-grid,.how-grid{grid-template-columns:repeat(2,1fr)}
  .ing-grid{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1fr;gap:1.6rem}
  .footer-grid{grid-template-columns:1fr 1fr}
}

/* ---------- Responsive: mobile ---------- */
@media(max-width:640px){
  .wrap{width:min(100% - 1.6rem)}
  section{padding:2.7rem 0}
  .header-in{flex-wrap:wrap;padding:.7rem 0}
  .nav-toggle{display:flex}
  .nav{width:100%;flex-basis:100%;flex-direction:column;align-items:stretch;gap:.4rem;
    display:none;padding:1rem 0 .2rem;border-top:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a:not(.cta-btn){font-size:.95rem;white-space:nowrap;padding:.4rem 0}
  .nav .cta-btn{font-size:.9rem;padding:.7rem 1.1rem;white-space:nowrap;justify-content:center}
  .hero{padding:2.4rem 0}
  .ben-grid,.how-grid{grid-template-columns:1fr}
  .ing-grid{grid-template-columns:repeat(2,1fr)}
  .trust-row{gap:.45rem}
  .trust-row span{font-size:.8rem;padding:.32rem .62rem}
  .footer-grid{grid-template-columns:1fr;gap:1.4rem}
  .lang-list{gap:.35rem}
}

/* ---------- Reduced motion ---------- */
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}