/* ============================================================
   GAS STREAM — landing · design system "Braise" (charte app mobile)
   Big Shoulders Display + Dosis · palette africaine chaude
   Soleil #F2A21C · Forêt #0E5C43 · Terre #D6492E · Teal #1E9E8A
   ============================================================ */
:root{
  --sun:#F2A21C; --sun-press:#D98A0E; --sun-soft:#FBE7C2;
  --forest:#0E5C43; --forest-soft:#DCEDE6;
  --teal:#1E9E8A; --teal-soft:#D9F0EB;
  --earth:#D6492E; --earth-soft:#F8DDD6;
  --bg:#FBF3E4; --surface:#FFFDF8; --surface-2:#F3E9D4;
  --t1:#1E1B17; --t2:#7A6E52; --t3:#A89B7C;
  --border:#E7DCC4; --border-str:#D8C9A8;
  --sh:0 6px 18px -4px rgba(70,58,30,.14);
  --sh-lg:0 16px 40px -10px rgba(70,58,30,.22);
  --f-display:'Big Shoulders Display',Impact,sans-serif;
  --f-body:'Dosis',system-ui,sans-serif;
  --r-sm:14px; --r:16px;
  --maxw:1160px; --gut:clamp(20px,5vw,60px);
  --ease:cubic-bezier(.16,1,.3,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--f-body);background:var(--bg);color:var(--t1);line-height:1.55;font-weight:500;-webkit-font-smoothing:antialiased;overflow-x:hidden}
::selection{background:var(--sun);color:var(--t1)}
a{color:inherit;text-decoration:none}svg,img{display:block;max-width:100%}
.wrap{max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gut)}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;color:var(--t1);line-height:.98;text-transform:uppercase;letter-spacing:.005em}
.eyebrow{font-family:var(--f-body);font-weight:700;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--forest);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:'';width:22px;height:3px;border-radius:3px;background:var(--sun)}

/* kente band */
.kente{height:14px;width:100%;background:
  repeating-linear-gradient(45deg,var(--forest) 0 10px,var(--sun) 10px 20px,var(--earth) 20px 30px,var(--teal) 30px 40px)}

/* nav */
.nav{position:fixed;inset:0 0 auto;z-index:100;background:rgba(251,243,228,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav__in{max-width:var(--maxw);margin-inline:auto;padding:12px var(--gut);display:flex;align-items:center;justify-content:space-between}
.logo{display:flex;align-items:center;gap:11px}
.logo img{width:40px;height:40px;border-radius:12px;background:var(--surface);border:1px solid var(--border);padding:3px}
.logo b{font-family:var(--f-display);font-weight:700;font-size:24px;text-transform:uppercase;letter-spacing:.01em}
.nav__l{display:flex;gap:26px;align-items:center}
.nav__l a{font-size:15px;font-weight:600;color:var(--t2)}
.nav__l a:hover{color:var(--t1)}
.btn{display:inline-flex;align-items:center;gap:9px;font-family:var(--f-display);font-weight:700;font-size:17px;text-transform:uppercase;letter-spacing:.02em;padding:13px 24px;min-height:52px;border-radius:var(--r-sm);cursor:pointer;border:none;transition:transform .2s var(--ease),box-shadow .2s,background .2s;align-items:center}
.btn--primary{background:var(--sun);color:var(--t1);box-shadow:0 8px 20px -6px rgba(242,162,28,.6)}
.btn--primary:hover{background:var(--sun-press);transform:translateY(-2px)}
.btn--out{background:transparent;color:var(--t1);border:1.5px solid var(--t1)}
.btn--out:hover{background:var(--t1);color:var(--bg)}
.btn svg{width:17px;height:17px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:6px}
.burger span{display:block;width:24px;height:2px;background:var(--t1);margin:5px 0;border-radius:2px}

/* hero */
.hero{padding:150px 0 80px;position:relative;overflow:hidden}
.hero__in{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
.hero h1{font-size:clamp(52px,10vw,120px);line-height:.9}
.hero h1 .sun{color:var(--sun)}
.hero__sub{font-family:var(--f-body);margin-top:22px;max-width:44ch;font-size:clamp(16px,1.6vw,19px);color:var(--t2);line-height:1.6}
.hero__cta{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero__stats{margin-top:44px;display:flex;gap:36px;flex-wrap:wrap}
.hero__stats .n{font-family:var(--f-display);font-weight:700;font-size:40px;line-height:1;color:var(--forest)}
.hero__stats .l{font-family:var(--f-body);font-weight:600;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--t3);margin-top:4px}

/* bottle gauge signature */
.gauge{position:relative;display:flex;justify-content:center;align-items:center;gap:24px}
.bottle{position:relative;width:180px;height:320px}
.bottle svg{width:100%;height:100%;overflow:visible}
.bottle .fluid{transform-origin:bottom;animation:wave 3s ease-in-out infinite}
@keyframes wave{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
.gauge__read{display:flex;flex-direction:column;gap:14px}
.gr{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:14px 18px;box-shadow:var(--sh);min-width:150px}
.gr .v{font-family:var(--f-display);font-weight:700;font-size:34px;line-height:1}
.gr .v.forest{color:var(--forest)}.gr .v.teal{color:var(--teal)}.gr .v.sun{color:var(--sun)}
.gr .k{font-family:var(--f-body);font-weight:600;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--t3);margin-top:4px}
.gr.alert{border-color:var(--earth);background:var(--earth-soft)}
.gr.alert .v{color:var(--earth);font-size:16px;display:flex;align-items:center;gap:8px}

/* section */
.sec{padding:clamp(66px,9vw,116px) 0}
.sec--surface{background:var(--surface)}
.sh{max-width:640px;margin-bottom:50px}
.sh h2{font-size:clamp(32px,5.4vw,60px)}
.sh p{font-family:var(--f-body);margin-top:14px;color:var(--t2);font-size:16px;text-transform:none}

/* state machine strip */
.states{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stt{border-radius:var(--r);padding:22px;color:#fff;position:relative;overflow:hidden;min-height:150px;display:flex;flex-direction:column;justify-content:flex-end}
.stt.full{background:var(--forest)}.stt.ok{background:var(--teal)}.stt.low{background:var(--sun);color:var(--t1)}.stt.crit{background:var(--earth)}
.stt .pct{font-family:var(--f-display);font-weight:700;font-size:38px;line-height:1}
.stt .lb{font-family:var(--f-body);font-weight:700;font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-top:6px}
.stt .rg{font-family:var(--f-body);font-size:12px;opacity:.85;margin-top:2px}

/* features */
.feat{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.fc{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:30px;box-shadow:var(--sh);transition:transform .25s var(--ease),box-shadow .25s}
.fc:hover{transform:translateY(-4px);box-shadow:var(--sh-lg)}
.fc .i{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;background:var(--sun-soft)}
.fc .i svg{width:26px;height:26px;stroke:var(--forest);fill:none;stroke-width:1.9}
.fc h3{font-size:24px}
.fc p{font-family:var(--f-body);margin-top:8px;color:var(--t2);font-size:14.5px}

/* how / mascot */
.how{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px;align-items:center}
.how__mascot{text-align:center}
.how__mascot img{max-width:280px;margin:0 auto;filter:drop-shadow(0 20px 30px rgba(70,58,30,.2))}
.how ol{list-style:none;counter-reset:h}
.how li{counter-increment:h;padding:20px 0;border-top:1px solid var(--border);display:flex;gap:18px;align-items:flex-start}
.how li::before{content:counter(h);font-family:var(--f-display);font-weight:700;font-size:22px;width:46px;height:46px;border-radius:50%;background:var(--forest);color:#fff;display:grid;place-items:center;flex:none}
.how li b{font-family:var(--f-display);font-weight:700;font-size:22px;text-transform:uppercase}
.how li span{font-family:var(--f-body);display:block;color:var(--t2);font-size:14.5px;margin-top:2px}

/* CTA */
.cta{background:var(--forest);border-radius:24px;padding:clamp(46px,7vw,84px);text-align:center;color:#fff;position:relative;overflow:hidden}
.cta h2{color:#fff;font-size:clamp(34px,6vw,72px)}
.cta h2 .sun{color:var(--sun)}
.cta p{font-family:var(--f-body);margin:18px auto 0;max-width:42ch;color:rgba(255,255,255,.82);font-size:17px}
.cta .row{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.cta .btn--out{color:#fff;border-color:rgba(255,255,255,.5)}
.cta .btn--out:hover{background:#fff;color:var(--forest)}

/* download section */
.dl{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.dl__txt h2{font-size:clamp(28px,3.8vw,44px)}
.dl__hint{font-family:var(--f-body);margin-top:12px;color:var(--t2);font-size:15px;text-transform:none}
.dl__hint b{color:var(--forest)}
.dl__badges{display:flex;flex-direction:column;gap:14px}
.store{display:flex;align-items:center;gap:13px;background:var(--t1);color:#FBF3E4;padding:13px 22px;border-radius:var(--r-sm);min-width:230px;border:2px solid transparent;box-shadow:var(--sh);transition:transform .2s var(--ease),box-shadow .2s}
.store svg{width:26px;height:26px;flex:none}
.store span{display:flex;flex-direction:column;line-height:1.05}
.store small{font-family:var(--f-body);font-size:11px;opacity:.85;font-weight:500}
.store b{font-family:var(--f-display);font-size:20px;font-weight:700;text-transform:uppercase}
.store:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.store.detected{border-color:var(--sun)}
.store.dimmed{opacity:.5}

/* footer */
.foot{background:#15120E;color:#F3EAD8;padding:56px 0 40px;margin-top:0}
.foot__logo{display:inline-block;margin-bottom:24px}
.foot__logo img{height:66px}
.foot__grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;align-items:flex-end}
.foot p{font-family:var(--f-body);color:#B9AC92;font-size:14px;max-width:34ch}
.foot a.back{font-family:var(--f-body);color:#B9AC92;font-size:14px;font-weight:600}.foot a.back:hover{color:#fff}
.foot__bar{margin-top:34px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.foot .meta{font-family:var(--f-body);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:#897E66}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}

@media(max-width:900px){
  .nav__l{display:none}.burger{display:block}
  .hero__in{grid-template-columns:1fr;gap:40px}
  .states{grid-template-columns:1fr 1fr}
  .feat{grid-template-columns:1fr}
  .how{grid-template-columns:1fr;gap:36px}.how__mascot{order:-1}
  .dl{grid-template-columns:1fr;gap:26px}
}
@media(max-width:520px){.states{grid-template-columns:1fr}.store{min-width:0;width:100%}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}