/* Joinflex theme — calm scientific periwinkle · indigo · white, soft mint accent.
   Distinct from Hondro Sol (cream/amber), Flexacil (sky-teal/coral), Motion Energy (orange/teal). */
:root{
  --per: #8ea3d6;      /* soft periwinkle */
  --per-2:#5c74c0;     /* mid periwinkle */
  --indigo:#3a489b;    /* deep indigo */
  --ink:#1b2340;       /* near-black indigo-ink */
  --ink-2:#41497a;     /* muted indigo text */
  --mint:#8fd0b0;      /* soft mint accent */
  --mint-2:#5fb99a;    /* deeper mint */
  --bg:#f6f8ff;        /* pale periwinkle-washed white */
  --card:#ffffff;
  --line:#dde4fb;
  --serif:Georgia,"Times New Roman",serif;
  --sans:"Segoe UI",system-ui,-apple-system,Helvetica,Arial,sans-serif;
  --rad:18px;
  --maxw:1160px;
  --shadow:0 18px 45px rgba(58,72,155,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
html,body{overflow-x:hidden}
body{margin:0;font-family:var(--sans);color:var(--ink);line-height:1.6;background:var(--bg)}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--indigo);text-decoration:none}
h1,h2,h3{line-height:1.2;margin:0 0 .4em}
p{margin:0 0 1em}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.cta-btn{display:inline-block;padding:15px 30px;border-radius:999px;background:linear-gradient(135deg,var(--per-2),var(--indigo));color:#fff;font-weight:700;font-size:1rem;letter-spacing:.2px;border:none;cursor:pointer;box-shadow:0 10px 26px rgba(58,72,155,.30);transition:transform .2s,box-shadow .2s}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 14px 30px rgba(58,72,155,.38)}

/* Header */
.site-header{background:rgba(246,248,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-in{display:flex;align-items:center;justify-content:space-between;min-height:70px;gap:14px}
.brand{font-family:var(--serif);font-size:1.5rem;font-weight:700;color:var(--indigo);letter-spacing:.3px}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:var(--ink-2);font-weight:600;font-size:.95rem;transition:color .2s}
.nav a:hover{color:var(--indigo)}
.nav .cta-btn{color:#fff;font-size:.9rem;padding:11px 22px}
.nav-toggle{display:none}

/* Hero */
.hero{padding:64px 0;background:
  radial-gradient(60rem 30rem at 85% -10%, rgba(143,176,214,.35), transparent 60%),
  radial-gradient(40rem 26rem at -10% 110%, rgba(143,208,176,.20), transparent 55%),
  linear-gradient(180deg,#eef2fd,var(--bg))}
.hero-in{display:grid;gap:40px;align-items:center}
.hero-copy .eyebrow{display:inline-block;background:rgba(143,208,176,.18);color:#2f8a6c;font-weight:700;font-size:.8rem;text-transform:uppercase;letter-spacing:1.4px;padding:8px 16px;border-radius:999px;margin-bottom:20px}
.hero-copy h1{font-family:var(--serif);font-size:2.5rem;font-weight:700;color:var(--ink);max-width:560px}
.hero-copy .lead{font-size:1.12rem;color:var(--ink-2);max-width:560px}
.hero-copy .hot{color:var(--indigo);font-weight:700;margin:6px 0 22px;font-size:1rem}
.hero-actions{margin:6px 0 26px}
.trust-row{display:flex;flex-wrap:wrap;gap:14px 18px}
.trust-row span{display:inline-flex;align-items:center;gap:8px;color:var(--ink-2);font-weight:600;font-size:.92rem;background:var(--card);border:1px solid var(--line);border-radius:999px;padding:8px 16px;box-shadow:0 4px 14px rgba(58,72,155,.06)}
.trust-row span svg{width:18px;height:18px;color:var(--mint-2);stroke-width:3}
.hero-visual{display:flex;justify-content:center}
.hero-visual svg{width:min(340px,80%);filter:drop-shadow(0 22px 34px rgba(58,72,155,.18))}

@media(min-width:880px){
  .hero-in{grid-template-columns:1.05fr .95fr}
  .hero-copy h1{font-size:3.1rem}
}

/* Section shell */
section{padding:66px 0}
.sec-head{max-width:680px;margin:0 auto 40px;text-align:center}
.sec-head .kicker{display:inline-block;background:rgba(143,176,214,.18);color:var(--per-2);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:1.4px;padding:7px 15px;border-radius:999px;margin-bottom:16px}
.sec-head h2{font-family:var(--serif);font-size:2rem;color:var(--ink)}
.sec-head p{color:var(--ink-2);font-size:1.05rem}
section#benefits{background:#fff}
section#how{background:
  radial-gradient(40rem 26rem at 110% 0%, rgba(143,208,176,.16), transparent 55%),var(--bg)}
section#ingredients{background:#fff}
section#about{background:
  radial-gradient(46rem 30rem at -10% 100%, rgba(143,176,214,.20), transparent 60%),var(--bg)}
section#faq{background:#fff}

/* Benefits */
.ben-grid{display:grid;gap:20px}
.ben-card{background:linear-gradient(160deg,#ffffff,#f2f6ff);border:1px solid var(--line);border-radius:var(--rad);padding:26px;box-shadow:var(--shadow)}
.ben-card .ic{width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,var(--mint),var(--mint-2));display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.ben-card .ic svg{width:26px;height:26px;color:#fff;stroke-width:3}
.ben-card h3{font-size:1.15rem;color:var(--indigo)}
.ben-card p{color:var(--ink-2);font-size:.99rem;margin-bottom:0}

@media(min-width:640px){.ben-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.ben-grid{grid-template-columns:repeat(3,1fr)}}

/* How to use */
.how-grid{display:grid;gap:20px}
.step{background:var(--card);border:1px solid var(--line);border-left:5px solid var(--per-2);border-radius:var(--rad);padding:26px;box-shadow:0 10px 28px rgba(58,72,155,.07)}
.step .num{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--per-2),var(--indigo));color:#fff;font-weight:800;font-size:1.1rem;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.step h3{font-size:1.1rem;color:var(--ink)}
.step p{color:var(--ink-2);font-size:.99rem;margin-bottom:0}
.tip{background:rgba(143,208,176,.14);border:1px solid rgba(143,208,176,.5);border-radius:14px;padding:16px 20px;color:var(--ink-2);font-size:.95rem;margin-top:24px}

@media(min-width:760px){.how-grid{grid-template-columns:repeat(3,1fr)}}

/* Ingredients */
.ing-grid{display:grid;gap:18px}
.ing-card{background:#fff;border:1px solid var(--line);border-radius:var(--rad);padding:24px;box-shadow:0 10px 28px rgba(58,72,155,.06)}
.ing-card h3{color:var(--indigo);font-size:1.12rem;padding-bottom:10px;border-bottom:2px solid var(--mint);display:inline-block}
.ing-card p{color:var(--ink-2);font-size:.98rem;margin-bottom:0;margin-top:10px}

@media(min-width:640px){.ing-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.ing-grid{grid-template-columns:repeat(3,1fr)}}

/* About split */
.split{display:grid;gap:34px;align-items:center}
.split .checklist{list-style:none;margin:0;padding:0}
.split .checklist li{display:flex;align-items:flex-start;gap:12px;font-weight:600;color:var(--ink);margin-bottom:14px;font-size:1.02rem}
.split .checklist li svg{width:22px;height:22px;color:var(--mint-2);stroke-width:3;flex-shrink:0;margin-top:3px}
.split .cta-btn{margin-top:10px}

@media(min-width:820px){.split{grid-template-columns:1fr 1fr}}

/* Quote band */
.quote{padding:76px 0;background:linear-gradient(135deg,var(--indigo),#4f5bd5);color:#fff;text-align:center}
.quote h2{font-family:var(--serif);font-size:2rem;max-width:760px;margin:0 auto .4em;color:#fff}
.quote p{color:#dde4ff;font-size:1.1rem;max-width:680px;margin:0 auto 26px}
.quote .cta-btn{background:#fff;color:var(--indigo);box-shadow:0 12px 28px rgba(0,0,0,.20)}
.quote .cta-btn:hover{transform:translateY(-2px)}

/* FAQ */
.faq-box{max-width:720px;margin:0 auto}
.faq-box details{border:1px solid var(--line);border-radius:14px;background:var(--card);margin-bottom:12px;padding:0 20px;box-shadow:0 6px 18px rgba(58,72,155,.06);overflow:hidden}
.faq-box summary{cursor:pointer;list-style:none;padding:18px 0;font-weight:700;color:var(--ink);font-size:1.02rem;position:relative;padding-right:30px}
.faq-box summary::-webkit-details-marker{display:none}
.faq-box summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);color:var(--per-2);font-size:1.5rem;font-weight:400;transition:transform .2s}
.faq-box details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq-box details .a{padding-bottom:18px;color:var(--ink-2);font-size:.98rem}

/* CTA band */
.cta-band{padding:80px 0;background:#fff;text-align:center;border-top:1px solid var(--line)}
.cta-band h2{font-family:var(--serif);font-size:2.1rem;color:var(--ink);max-width:640px;margin:0 auto .4em}
.cta-band p{color:var(--ink-2);font-size:1.1rem;max-width:620px;margin:0 auto 30px}
.cta-wrapper{text-align:center;padding:26px 0}

/* Footer */
.site-footer{background:var(--ink);color:#c9d0ee;padding:56px 0 24px;font-size:.92rem}
.site-footer .wrap{max-width:var(--maxw)}
.footer-grid{display:grid;gap:30px;margin-bottom:30px}
.footer-grid h4{color:#fff;font-size:1rem;margin-bottom:12px;font-family:var(--serif)}
.footer-grid p{color:#aab2da}
.footer-grid ul{list-style:none;margin:0;padding:0}
.footer-grid ul li{margin-bottom:9px}
.footer-grid ul li a{color:#c9d0ee;transition:color .2s}
.footer-grid ul li a:hover{color:var(--mint)}
.footer-bot{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:#8a94c9}
@media(min-width:680px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr}}

/* Lang block */
.lang-block{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:16px 18px;margin-bottom:30px}
.lang-label{color:#fff;font-weight:700;font-size:.9rem;margin-bottom:10px}
.lang-list{display:flex;flex-wrap:wrap;gap:10px 16px}
.lang-link{color:#c9d0ee;font-size:.92rem;transition:color .2s}
.lang-link:hover{color:var(--mint)}
.lang-link.active{color:var(--mint);font-weight:700}

/* Simple pages */
.simple{padding:60px 0}
.simple .sec-head{margin-bottom:26px;text-align:left}
.simple .wrap>p{color:var(--ink-2);font-size:1.02rem;max-width:780px;margin-bottom:1.1em}

/* Mobile nav */
@media(max-width:820px){
  .nav-toggle{display:inline-block;background:none;border:none;cursor:pointer;padding:8px;width:auto;box-shadow:none}
  .nav-toggle span{display:block;width:24px;height:2.5px;background:var(--indigo);margin:5px 0;border-radius:2px;transition:transform .25s,opacity .25s}
  .nav-toggle.is-open span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
  .nav-toggle.is-open span:nth-child(2){opacity:0}
  .nav-toggle.is-open span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
  .nav{position:fixed;top:70px;left:16px;right:16px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0;padding:10px;display:none;z-index:60}
  .nav.open{display:flex}
  .nav a{padding:14px 16px;border-radius:10px;border-bottom:1px solid var(--line);font-size:1rem}
  .nav a:last-child{border-bottom:none}
  .nav .cta-btn{text-align:center;margin-top:8px}
}
@media(max-width:400px){
  .sec-head h2{font-size:1.7rem}
  .hero-copy h1{font-size:2.1rem}
  .cta-band h2,.quote h2{font-size:1.7rem}
  .hero{padding:46px 0}
  section{padding:50px 0}
}