/* ============================================================
   Flexacil — daily joint-support CAPSULE complex · SPLIT HERO
   Design: Fresh wellness. A calm, airy blue-green gradient
   language — trustworthy blue anchors, fresh green vitality,
   off-white paper. Rounded-modern cards, soft light shadows,
   generous whitespace. Clean, gentle, easy to move through.
   ============================================================ */
:root{
  --ink:#1c3a4f;
  --ink2:#12406b;
  --muted:#5a7284;
  --accent:#158b76;        /* fresh teal-green */
  --accent-d:#0e7f6a;
  --blue:#2f7fd0;          /* trustworthy blue */
  --blue-d:#1d5fa6;
  --bg:#f6faf9;            /* off-white paper, green-tinted */
  --card:#ffffff;
  --line:#ddecea;
  --grad:linear-gradient(115deg,#2f7fd0 0%,#158b76 100%);
  --glow:radial-gradient(circle,rgba(33,180,150,.5),rgba(47,127,208,.12) 60%,transparent 74%);
  --r:20px;
  --shadow:0 18px 40px -26px rgba(29,95,166,.38);
  --font:'Inter','Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.66;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 22px}
h1,h2,h3{line-height:1.15;letter-spacing:-.015em}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(246,250,249,.86);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{font-weight:800;letter-spacing:.02em;font-size:1.32rem;color:var(--ink2)}
.brand b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav{display:flex;align-items:center;gap:24px}
.nav a{color:var(--muted);font-weight:600;font-size:.92rem}
.nav a:hover{color:var(--accent-d)}
.cta-btn{display:inline-block;background:var(--grad);color:#fff;font-weight:800;font-size:.95rem;padding:.82rem 1.5rem;border-radius:999px;box-shadow:0 12px 26px -12px rgba(25,165,139,.75);transition:transform .16s ease,box-shadow .16s ease}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 18px 32px -14px rgba(25,165,139,.9)}
.nav .cta-btn{color:#fff;padding:.58rem 1.1rem}

/* ---------- Hero (SPLIT archetype) ---------- */
.hero{background:linear-gradient(150deg,var(--bg) 0%,#eaf6f3 34%,var(--bg) 66%,#e7f1f8 100%);color:var(--ink);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;width:560px;height:560px;border-radius:50%;top:-230px;right:-140px;background:radial-gradient(circle,rgba(47,127,208,.14),transparent 66%);pointer-events:none}
.hero::after{content:"";position:absolute;width:480px;height:480px;border-radius:50%;bottom:-210px;left:-130px;background:radial-gradient(circle,rgba(25,165,139,.16),transparent 66%);pointer-events:none}
.hero-in{display:grid;grid-template-columns:1.06fr .94fr;gap:34px;align-items:center;padding:72px 22px 82px;position:relative}
.hero-copy{max-width:560px;position:relative;z-index:1}
.eyebrow{display:inline-block;color:var(--accent-d);font-weight:800;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;margin-bottom:16px;background:#fff;border:1px solid var(--line);padding:.38rem .9rem;border-radius:999px;box-shadow:var(--shadow)}
.hero h1{font-size:clamp(1.9rem,3.7vw,3rem);font-weight:800;color:var(--ink2);margin-bottom:18px}
.hero .lead{color:var(--muted);font-size:1.05rem;margin-bottom:20px;max-width:49ch}
.hero .hot{color:var(--accent-d);font-weight:700;font-size:.92rem;margin-bottom:24px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin-bottom:24px}
.hero-actions .cta-btn{font-size:1.05rem;padding:.95rem 1.7rem}
.trust-row{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.trust-row span{display:inline-flex;align-items:center;gap:9px;color:var(--ink2);font-size:.86rem;font-weight:600}
.trust-row svg{width:16px;height:16px;color:var(--accent)}
.hero-visual{display:flex;align-items:center;justify-content:center;position:relative}
.hero-visual::before{content:"";position:absolute;width:min(400px,96%);aspect-ratio:1;border-radius:50%;background:var(--glow)}
.hero-prod{position:relative;width:min(290px,33vw);height:auto;filter:drop-shadow(0 34px 44px rgba(14,127,106,.32))}

/* ---------- Sections ---------- */
section{padding:66px 22px}
.sec-head{max-width:700px;margin:0 auto 36px;text-align:center}
.kicker{color:var(--accent);font-weight:800;letter-spacing:.15em;text-transform:uppercase;font-size:.73rem;margin-bottom:12px}
.sec-head h2{font-size:clamp(1.55rem,2.8vw,2.2rem);color:var(--ink2);font-weight:800;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:1rem}
section#about .wrap.split,section#how .wrap,section#ingredients .wrap,section#faq .wrap,section#benefits .wrap{background:transparent}

/* benefits */
.ben-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ben-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px 26px;box-shadow:var(--shadow);transition:transform .18s ease,border-color .18s ease}
.ben-card:hover{transform:translateY(-4px);border-color:#b8e3da}
.ben-card .ic{width:52px;height:52px;border-radius:16px;background:linear-gradient(135deg,rgba(47,127,208,.14),rgba(25,165,139,.14));display:grid;place-items:center;margin-bottom:16px}
.ben-card .ic svg{width:25px;height:25px;color:var(--accent-d)}
.ben-card h3{color:var(--ink2);font-size:1.06rem;margin-bottom:8px}
.ben-card p{color:var(--muted);font-size:.93rem}

/* how */
.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:28px;position:relative;box-shadow:var(--shadow)}
.step .num{width:48px;height:48px;border-radius:14px;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.1rem;margin-bottom:16px;box-shadow:0 10px 20px -10px rgba(25,165,139,.7)}
.step h3{color:var(--ink2);font-size:1.06rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.93rem}

/* ingredients */
.ing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:18px}
.ing-card{background:linear-gradient(180deg,#ffffff,#f0faf7);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:16px;padding:20px;box-shadow:var(--shadow)}
.ing-card h3{color:var(--ink2);font-size:.99rem;margin-bottom:7px}
.ing-card p{color:var(--muted);font-size:.89rem}

/* about split */
#about .split{display:grid;grid-template-columns:1fr 1fr;gap:42px;align-items:center;background:linear-gradient(130deg,var(--ink2),var(--blue-d));border-radius:28px;padding:46px;color:#fff;box-shadow:0 26px 50px -30px rgba(18,64,107,.75)}
#about .split .kicker{color:#5d8378}
#about .split h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.95rem);margin-bottom:12px}
#about .split p.lead{color:#d8ecf5;font-size:1rem}
.checklist{list-style:none;margin:0 0 26px}
.checklist li{display:flex;align-items:flex-start;gap:12px;color:#e6f3fa;font-weight:600;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:.96rem}
.checklist svg{flex:none;width:20px;height:20px;color:#5d8378;margin-top:3px}

/* quote */
.quote{background:linear-gradient(180deg,#e7f6f2,#dcf0ea);color:var(--ink2);text-align:center}
.quote h2{font-size:clamp(1.5rem,2.7vw,2.15rem);max-width:660px;margin:0 auto 14px}
.quote p{color:var(--muted);max-width:600px;margin:0 auto 26px;font-size:1rem}

/* faq */
.faq-box{max-width:780px;margin:0 auto}
details{background:var(--card);border:1px solid var(--line);border-radius:16px;margin-bottom:12px;box-shadow:0 10px 24px -20px rgba(29,95,166,.5);overflow:hidden}
summary{list-style:none;padding:18px 22px;font-weight:700;color:var(--ink2);cursor:pointer;position:relative;padding-right:42px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.3rem;font-weight:800}
details[open] summary::after{content:"−"}
details .a{padding:0 22px 18px;color:var(--muted);font-size:.95rem}

/* cta band */
.cta-band{background:linear-gradient(125deg,var(--blue-d),var(--accent-d));color:#fff;text-align:center}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:12px}
.cta-band p{color:#dcf0ea;max-width:620px;margin:0 auto 26px}

/* sub pages */
.simple{background:#fbfdfd;padding:64px 22px}
.simple .wrap{max-width:820px}
.simple h1{color:var(--ink2);font-size:clamp(1.6rem,3vw,2.2rem);margin-bottom:20px}
.simple p{color:var(--muted);margin-bottom:14px}
.simple .tip{background:#eff9f6;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:16px 18px;color:var(--ink2);font-size:.95rem;margin:18px 0}
.cta-wrapper{text-align:center;margin-top:28px}
.simple .how-grid{margin-top:10px}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink2);color:#cfe4ee;padding:54px 22px 30px}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:34px;margin-bottom:32px}
.site-footer h4{color:#fff;font-size:.95rem;margin-bottom:12px;text-transform:uppercase;letter-spacing:.06em}
.site-footer p{font-size:.87rem;color:#9cc7d8}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#a7ccd9;font-size:.9rem}
.site-footer a:hover{color:#5d8378}
.footer-bot{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;color:#8db4c6;font-size:.82rem;text-align:center}
.ft-brand h4{color:#fff}
.site-footer .ft-buy{display:inline-block;background:var(--grad,#158b76);color:#fff !important;font-weight:700;padding:9px 18px;border-radius:999px;margin-bottom:6px;box-shadow:0 4px 14px rgba(0,0,0,.22)}
.site-footer .ft-buy:hover{filter:brightness(1.08);color:#fff}

/* country switcher */
.lang-block{margin-bottom:30px}
.lang-label{color:#9cc7d8;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px}
.lang-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.lang-link{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);color:#dceff6;padding:.5rem .85rem;border-radius:12px;font-size:.86rem;transition:.15s;min-height:60px}
.lang-link:hover{background:rgba(25,165,139,.22);border-color:#53c0a6}
.lang-link.active{background:var(--accent);color:#fff;border-color:var(--accent);font-weight:700}
.lang-link img{display:inline-block;vertical-align:middle;margin-right:6px;border-radius:2px;flex:none}

/* ---------- Interaction states ---------- */
a:focus-visible,summary:focus-visible{outline:3px solid rgba(47,127,208,.55);outline-offset:2px;border-radius:6px}
.cta-btn:focus-visible{outline:3px solid #fff;outline-offset:2px}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-in{grid-template-columns:1fr;text-align:center;padding:42px 22px 56px}
  .hero-copy{max-width:none;margin:0 auto}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-actions,.trust-row{justify-content:center;align-items:center}
  .hero-visual{order:-1}
  .hero-prod{width:min(230px,46vw)}
  .ben-grid,.how-grid{grid-template-columns:1fr 1fr}
  #about .split{grid-template-columns:1fr;padding:34px}
  .hero-in{grid-template-columns:1fr}
}
@media (max-width:720px){
  .hero-in{grid-template-columns:1fr;text-align:center;padding:38px 0}
  .hero-copy{order:1}
  .hero-visual{order:-1;margin-bottom:8px}
  .hero-prod{width:min(210px,54vw)}
  .ben-grid,.how-grid,.ing-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .quote .wrap{text-align:center}
  .quote .cta-btn{justify-self:center}
  .cta-btn{min-height:52px;padding:0 22px}
  .step{text-align:left}
}
@media (max-width:640px){
  .site-header{position:static}
  .header-in{flex-direction:column;gap:10px;padding:12px 16px}
  .nav{flex-wrap:wrap;justify-content:center;row-gap:8px}
  .nav .cta-btn{order:9;width:100%;justify-content:center}
  .lang-list{grid-template-columns:1fr 1fr;gap:8px}
  .sec-head h2{font-size:1.6rem}
  .hero h1{font-size:1.9rem}
  .hero .lead{font-size:1.02rem}
  .hero-prod{max-width:80%;margin:0 auto}
  .footer-bot{flex-direction:column;align-items:center;text-align:center}
}
@media (max-width:460px){
  .ben-grid,.how-grid{grid-template-columns:1fr}
  .lang-link{min-height:54px;font-size:.8rem;padding:6px 10px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}