/* ==========================================================================\n   R28 — SPRING ENERGY MOBILE APP SHELL\n   Solo <= 900px. Desktop invariato.\n   ========================================================================== */
:root{--app-safe-bottom:env(safe-area-inset-bottom,0px);--app-safe-top:env(safe-area-inset-top,0px);--app-nav-h:74px;--app-red:#fc231e;--app-ink:#141d27;--app-paper:#fff;--app-bg:#f4f2ed;--app-line:rgba(20,29,39,.10)}
.app-mobile-nav,.app-sheet,.app-sheet-backdrop{display:none}
@media(max-width:900px){
  html{scroll-padding-top:72px;scroll-padding-bottom:calc(var(--app-nav-h) + var(--app-safe-bottom) + 12px)}
  body{background:var(--app-bg)!important;padding-bottom:calc(var(--app-nav-h) + var(--app-safe-bottom) + 14px)!important;-webkit-tap-highlight-color:transparent}
  body.app-sheet-open{overflow:hidden}
  #site-header{position:sticky!important;top:0!important;z-index:110!important;background:rgba(250,249,246,.88)!important;backdrop-filter:blur(18px) saturate(1.15)!important;border-bottom:1px solid rgba(20,29,39,.06)!important;box-shadow:0 8px 26px rgba(20,29,39,.05)!important;padding-top:var(--app-safe-top)}
  #site-header .nav-row{height:64px!important;min-height:64px!important;width:calc(100% - 28px)!important;gap:10px!important}
  #site-header .brand-logo{height:42px!important;max-width:178px!important}
  #site-header .main-nav,#site-header .burger,#mobile-drawer{display:none!important}
  #site-header .nav-actions{margin-left:auto!important}
  main{overflow:clip}
  .container{width:min(100% - 28px,1280px)!important}
  .section{padding:56px 0!important}
  .page-hero{padding:30px 0 28px!important}
  .page-hero-grid{gap:22px!important}
  .page-hero h1,.hero h1{font-size:clamp(40px,12.8vw,58px)!important;line-height:.98!important;letter-spacing:-.045em!important}
  .page-hero p,.hero-lead{font-size:16px!important;line-height:1.55!important}
  .page-hero-media{height:44svh!important;min-height:320px!important;max-height:470px!important;border-radius:26px!important}
  .hero{padding-top:8px!important}
  .hero-grid{gap:18px!important}
  .hero-copy{padding:34px 4px 4px!important}
  .hero-visual{min-height:48svh!important;max-height:520px!important;border-radius:28px!important;box-shadow:0 18px 45px rgba(20,29,39,.12)!important}
  .hero-float{left:14px!important;right:14px!important;bottom:14px!important;width:auto!important;border-radius:22px!important;padding:16px!important}
  .hero-actions{gap:10px!important}
  .hero-actions .btn,.site-footer-actions .btn,.contact-zone .btn{min-height:50px!important;border-radius:16px!important;padding:0 18px!important;font-size:14px!important}
  .hero-trust{gap:9px!important;margin-top:20px!important}
  .hero-trust span{font-size:12px!important}
  .audience-rail{display:flex!important;overflow-x:auto!important;scroll-snap-type:x mandatory!important;gap:12px!important;border:0!important;padding:4px 0 12px!important;scrollbar-width:none}
  .audience-rail::-webkit-scrollbar{display:none}
  .audience-item{min-width:min(82vw,320px)!important;scroll-snap-align:start!important;border:1px solid var(--app-line)!important;border-radius:22px!important;background:#fff!important;padding:20px!important;box-shadow:0 8px 24px rgba(20,29,39,.05)!important}
  .audience-item .arrow{flex:none!important}
  .sec-head{gap:18px!important;margin-bottom:30px!important}
  .sec-head h2,.verify-copy h2,.method-intro h2,.split-copy h2{font-size:clamp(34px,10.5vw,48px)!important}
  .service-story{gap:18px!important}
  .service-row{border-radius:24px!important;overflow:hidden!important;background:#fff!important;border:1px solid var(--app-line)!important;box-shadow:0 10px 28px rgba(20,29,39,.05)!important;padding:0!important}
  .service-media{order:-1!important;margin:0!important;min-height:42svh!important;border-radius:0!important}
  .service-copy{padding:24px 22px 26px!important}
  .service-copy h3{font-size:34px!important}
  .solution-grid{display:flex!important;overflow-x:auto!important;scroll-snap-type:x mandatory!important;gap:14px!important;padding-bottom:10px!important;scrollbar-width:none}
  .solution-grid::-webkit-scrollbar{display:none}
  .solution{min-width:min(84vw,330px)!important;scroll-snap-align:start!important;border-radius:24px!important;min-height:250px!important}
  .verify-grid,.method-wrap,.split-visual,.editorial-grid{gap:30px!important}
  .bill-shell{border-radius:24px!important;padding:20px!important;box-shadow:0 16px 40px rgba(20,29,39,.10)!important}
  .method-intro{position:static!important}
  .method-item{grid-template-columns:48px 1fr!important;gap:16px!important;padding:22px 0!important}
  .method-mark{width:40px!important;height:40px!important}
  .split-image{min-height:52svh!important;border-radius:26px!important}
  .principle{grid-template-columns:1fr!important;gap:5px!important;padding:16px 0!important}
  .contact-zone{border-radius:28px!important;padding:30px 24px!important;gap:22px!important}
  .site-footer-cta{padding:48px 0!important}
  .site-footer-cta-inner{display:grid!important;grid-template-columns:1fr!important;gap:22px!important}
  .site-footer-actions{display:flex!important;gap:10px!important;flex-wrap:wrap!important}
  footer.r20-footer{padding-bottom:calc(40px + var(--app-nav-h) + var(--app-safe-bottom))!important}
  .footer-grid{gap:28px!important}
  .footer-bottom{gap:14px!important}
  .float-stack{display:none!important}

  /* App bottom navigation */
  .app-mobile-nav{display:grid;grid-template-columns:repeat(5,1fr);position:fixed;left:10px;right:10px;bottom:calc(8px + var(--app-safe-bottom));height:var(--app-nav-h);z-index:190;background:rgba(255,255,255,.94);backdrop-filter:blur(18px) saturate(1.15);border:1px solid rgba(255,255,255,.9);border-radius:24px;box-shadow:0 18px 50px rgba(20,29,39,.18);padding:7px 5px}
  .app-nav-item{appearance:none;border:0;background:transparent;color:rgba(20,29,39,.62);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-width:0;border-radius:17px;font:700 10px/1 Inter,system-ui,sans-serif;cursor:pointer;position:relative}
  .app-nav-item svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .app-nav-item.active{color:var(--app-red);background:rgba(252,35,30,.07)}
  .app-nav-item:focus-visible{outline:3px solid rgba(252,35,30,.35);outline-offset:1px}
  .app-nav-elettra{transform:translateY(-17px);overflow:visible}
  .app-nav-elettra .app-elettra-orb{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;background:#fff;box-shadow:0 10px 26px rgba(20,29,39,.22);border:3px solid #fff;overflow:hidden}
  .app-nav-elettra img{width:100%;height:100%;object-fit:cover;border-radius:50%}
  .app-nav-elettra span:last-child{margin-top:-1px;color:var(--app-ink)}

  /* Bottom sheets */
  .app-sheet-backdrop{display:block;position:fixed;inset:0;z-index:198;background:rgba(20,29,39,.34);backdrop-filter:blur(3px);opacity:0;pointer-events:none;transition:opacity .22s ease}
  .app-sheet-backdrop.open{opacity:1;pointer-events:auto}
  .app-sheet{display:block;position:fixed;left:8px;right:8px;bottom:calc(8px + var(--app-safe-bottom));z-index:199;background:#fff;border-radius:28px 28px 22px 22px;box-shadow:0 30px 70px rgba(20,29,39,.28);padding:10px 14px 18px;transform:translateY(calc(100% + 30px));transition:transform .28s cubic-bezier(.2,.75,.25,1);max-height:min(76svh,680px);overflow:auto}
  .app-sheet.open{transform:translateY(0)}
  .app-sheet-handle{width:44px;height:5px;border-radius:999px;background:rgba(20,29,39,.14);margin:2px auto 14px}
  .app-sheet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 4px 12px}
  .app-sheet-head h2{font:800 24px/1.05 Manrope,Inter,sans-serif;margin:0;letter-spacing:-.035em}
  .app-sheet-close{width:40px;height:40px;border:0;border-radius:50%;background:#f2f0eb;color:var(--app-ink);font-size:22px;cursor:pointer}
  .app-sheet-grid{display:grid;gap:10px}
  .app-sheet-link{display:grid;grid-template-columns:46px 1fr auto;align-items:center;gap:12px;padding:14px;border:1px solid var(--app-line);border-radius:18px;background:#faf9f6;color:var(--app-ink)}
  .app-sheet-link-icon{width:46px;height:46px;border-radius:15px;display:grid;place-items:center;background:#fff;color:var(--app-red);box-shadow:0 5px 14px rgba(20,29,39,.06)}
  .app-sheet-link-icon svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
  .app-sheet-link strong{font:800 15px/1.1 Manrope,Inter,sans-serif}
  .app-sheet-link small{display:block;color:rgba(20,29,39,.58);font:600 11px/1.4 Inter,sans-serif;margin-top:3px}
  .app-sheet-link .chev{font-size:20px;color:rgba(20,29,39,.42)}
  .app-sheet-section-title{font:800 11px/1 Inter,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:rgba(20,29,39,.46);padding:14px 4px 7px}

  /* Elettra as full mobile app surface */
  .el-panel,.voice-assistant-panel{border-radius:26px 26px 0 0!important}
  .el-panel{bottom:0!important;left:0!important;right:0!important;width:100%!important;max-width:none!important;max-height:calc(100svh - var(--app-safe-top) - 8px)!important}
  .el-panel.is-open,.el-panel.open{height:min(92svh,860px)!important}
  .voice-assistant-panel{right:0!important;bottom:0!important;width:100%!important;max-height:94svh!important}
  .voice-assistant-backdrop{background:rgba(20,29,39,.34)!important}

  /* Touch & fatigue reduction */
  a,button,input,select,textarea{touch-action:manipulation}
  .btn,.btn-link,.audience-item,.app-sheet-link{min-height:44px}
}
@media(max-width:430px){
  .app-mobile-nav{left:7px;right:7px;border-radius:22px}
  .app-nav-item{font-size:9.5px}
  .app-nav-elettra .app-elettra-orb{width:52px;height:52px}
  .container{width:calc(100% - 24px)!important}
}
@media(prefers-reduced-motion:reduce){.app-sheet,.app-sheet-backdrop{transition:none!important}}