/* ============================================================
   Metonil — Hyaluronic Acid + Collagen joint support · STRIP HERO
   Design: Fresh, cushioned hydration. Aqua + sky-blue + soft
   grey on clean white. The whole page flows like water — wavy
   scalloped edges, cushioned blobs, smooth rounded cards. Soft,
   fresh, buoyant — deliberately NOT clinical or sterile.
   ============================================================ */
:root{
  --ink:#274252;
  --ink2:#15506b;
  --muted:#647a8a;
  --accent:#27bfd4;        /* aqua */
  --accent-d:#159ab0;
  --sky:#a9ddf0;           /* sky blue */
  --sky-2:#e3f4fb;
  --gray:#aebcc7;          /* soft gray */
  --bg:#f7fbfd;
  --card:#ffffff;
  --line:#dfeaf0;
  --grad:linear-gradient(120deg,#27bfd4 0%,#7ad0e6 100%);
  --glow:radial-gradient(circle,rgba(39,191,212,.45),rgba(169,221,240,.16) 60%,transparent 74%);
  --r:18px;
  --shadow:0 18px 38px -26px rgba(21,80,107,.4);
  --font:'Nunito','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:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.wrap{max-width:1140px;margin:0 auto;padding:0 22px}
h1,h2,h3{line-height:1.18;letter-spacing:-.01em}
.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(247,251,253,.9);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{color:var(--accent-d)}
.nav{display:flex;align-items:center;gap:24px}
.nav a{color:var(--muted);font-weight:700;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:16px;box-shadow:0 12px 26px -12px rgba(39,191,212,.75);transition:transform .16s ease,box-shadow .16s ease}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 18px 32px -14px rgba(39,191,212,.9)}
.nav .cta-btn{color:#fff;padding:.58rem 1.1rem}

/* ---------- Hero (STRIP archetype) — water now / wavy ---------- */
.hero{background:linear-gradient(165deg,var(--sky-2) 0%,var(--bg) 45%,var(--sky-2) 100%);color:var(--ink);position:relative}
/* undulating wave band at the top of the strip */
.hero::before{content:"";position:absolute;top:0;left:0;right:0;height:26px;pointer-events:none;opacity:.8;
  background:radial-gradient(circle at 12% 0,#d7f0f9 10px,transparent 11px) 0 0/48px 26px repeat-x,
             radial-gradient(circle at 40% 0,#e3f4fb 10px,transparent 11px) 0 0/72px 26px repeat-x}
.hero::after{content:"";position:absolute;width:560px;height:560px;border-radius:50%;top:50%;left:50%;transform:translate(-76%,-66%);background:var(--glow);pointer-events:none;filter:blur(4px);opacity:.5}
.hero-strip-in{position:relative;z-index:1}
.eyebrow{display:inline-block;color:var(--accent-d);font-weight:800;letter-spacing:.16em;text-transform:uppercase;font-size:.7rem;margin-bottom:16px;background:rgba(255,255,255,.8);border:1px solid var(--line);padding:.4rem .9rem;border-radius:14px;box-shadow:var(--shadow)}
.hero h1{font-size:clamp(1.9rem,4.4vw,3rem);font-weight:800;color:var(--ink2);margin-bottom:18px}
.hero .lead{color:var(--muted);font-size:1.06rem;margin:0;max-width:50ch}
.hero .hot{color:var(--accent-d);font-weight:700;font-size:.92rem;margin-top:14px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;align-items:center;margin-top:24px}
.hero-actions .cta-btn{font-size:1.04rem;padding:.95rem 1.65rem;border-radius:18px}
.hero-visual{display:flex;align-items:center;justify-content:center;position:relative}
.hero-visual::before{content:"";position:absolute;width:min(360px,92%);border-radius:48% 52% 46% 54% / 56% 44% 56% 44%;background:var(--glow);filter:blur(3px);opacity:.65}
.hero-prod{position:relative;width:min(270px,34vw);height:auto;filter:drop-shadow(0 32px 42px rgba(21,80,107,.32))}
/* strip-bar: cushioned aqua bar carrying trust points */
.strip-bar{border-top:1px solid var(--line);background:linear-gradient(135deg,rgba(39,191,212,.12),rgba(169,221,240,.22))}
.strip-bar ul{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:0;padding:20px 24px}
.strip-bar li{display:flex;align-items:center;gap:10px;font-weight:700;font-size:.92rem;color:var(--ink2)}
.strip-bar li::before{content:"";flex:none;width:11px;height:11px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(39,191,212,.2)}

/* ---------- Sections ---------- */
section{padding:66px 22px}
.sec-head{max-width:700px;margin:0 auto 36px;text-align:center}
.kicker{color:var(--accent-d);font-weight:800;letter-spacing:.18em;text-transform:uppercase;font-size:.7rem;margin-bottom:13px}
.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}

/* benefits — cushioned blobs */
.ben-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ben-card{background:var(--card);border:1px solid var(--line);border-radius:26px;padding:28px 26px;box-shadow:var(--shadow);transition:transform .2s ease}
.ben-card:hover{transform:translateY(-5px)}
.ben-card .ic{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--sky-2),#d3eef8);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:26px;padding:28px;position:relative;box-shadow:var(--shadow)}
.step .num{width:50px;height:50px;border-radius:50%;background:var(--grad);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.1rem;margin-bottom:16px;box-shadow:0 12px 20px -10px rgba(39,191,212,.75)}
.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,#fff,var(--sky-2));border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:18px;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),#1a7d95);border-radius:30px;padding:46px;color:#fff;box-shadow:0 26px 52px -30px rgba(21,80,107,.7)}
#about .split .kicker{color:#bfe9f5}
#about .split h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.95rem);margin-bottom:12px}
#about .split p.lead{color:#d6eff6;font-size:1rem}
.checklist{list-style:none;margin:0 0 26px}
.checklist li{display:flex;align-items:flex-start;gap:12px;color:#e3f5f9;font-weight:600;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15);font-size:.96rem}
.checklist svg{flex:none;width:20px;height:20px;color:#bfe9f5;margin-top:3px}

/* quote */
.quote{background:linear-gradient(180deg,var(--sky-2),#d6eef7);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:18px;margin-bottom:12px;box-shadow:0 10px 24px -20px rgba(21,80,107,.5);overflow:hidden}
summary{list-style:none;padding:19px 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 19px;color:var(--muted);font-size:.95rem}

/* cta band */
.cta-band{background:linear-gradient(130deg,var(--accent-d),#0f7f96);color:#fff;text-align:center}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:12px}
.cta-band p{color:#d8f2f8;max-width:620px;margin:0 auto 26px}

/* sub pages */
.simple{background:var(--bg);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:var(--sky-2);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:14px;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:#123c4c;color:#cfebf3;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:#9dc9d6}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#abd4de;font-size:.9rem}
.site-footer a:hover{color:#d8f2f8}
.footer-bot{border-top:1px solid rgba(255,255,255,.15);padding-top:20px;color:#8fb6c2;font-size:.82rem;text-align:center}
.site-footer .ft-buy{display:inline-block;background:var(--accent,#27bfd4);color:#0b3850 !important;font-weight:800;padding:9px 18px;border-radius:14px;margin-bottom:6px;box-shadow:0 4px 14px rgba(0,0,0,.24)}
.site-footer .ft-buy:hover{filter:brightness(1.08);color:#0b3850 !important}

/* country switcher */
.lang-block{margin-bottom:30px}
.lang-label{color:#9dc9d6;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:#e0f3f8;padding:.5rem .85rem;border-radius:14px;font-size:.86rem;transition:.15s;min-height:60px}
.lang-link:hover{background:rgba(39,191,212,.2);border-color:#4fcee0}
.lang-link.active{background:var(--accent);color:#0b3850;border-color:var(--accent);font-weight:800}
.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(39,191,212,.6);outline-offset:2px;border-radius:8px}
.cta-btn:focus-visible{outline:3px solid #fff;outline-offset:2px}

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .hero-strip-in,.hero-strip .hero-visual{margin:0 auto}
}
@media (max-width:720px){
  .hero-strip-in{grid-template-columns:1fr;text-align:center;padding:44px 18px}
  .hero .lead{margin-left:auto;margin-right:auto}
  .hero-actions{justify-content:center}
  .strip-bar ul{grid-template-columns:1fr 1fr}
  .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}
  .strip-bar ul{grid-template-columns:1fr;text-align:center;justify-content:center}
  .strip-bar li{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}}
/* QA 2026-08-23: #about .split stays 2-col on mobile -> collapse + clamp */
@media (max-width:720px){#about .split{grid-template-columns:1fr;gap:16px}}
html,body{width:100%;max-width:100%;overflow-x:hidden}