/* ==========================================================================
   ONE BY ONE — sito di download
   Palette scura (nero → grigio), Archivo Narrow, dettagli Swiss.
   Riferimenti: struttura app.prntscr.com, segno ">" e riquadri di TENSEGRITAS,
   grana Resource Boy (Spazio Desk), elementi HVNTER.
   ========================================================================== */

@font-face{font-family:"Archivo Narrow";font-style:normal;font-display:swap;font-weight:400 700;src:url("fonts/archivo-narrow-latin-ext-wght-normal.woff2") format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Archivo Narrow";font-style:normal;font-display:swap;font-weight:400 700;src:url("fonts/archivo-narrow-latin-wght-normal.woff2") format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}

:root{
  --black:#0a0a0a;
  --bg:#151515;
  --box:#1c1c1b;
  --box-2:#20201f;
  --line:#373736;
  --line-soft:#2a2a29;
  --ink:#f2f1ec;
  --muted:#9c9b96;
  --faint:#6c6b67;
  --font:"Archivo Narrow","Arial Narrow",Arial,sans-serif;
  --wrap:1200px;
  --gutter:clamp(20px,4vw,48px);
  --radius:3px;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;-webkit-user-select:none;user-select:none}
body{
  margin:0;min-height:100vh;
  font-family:var(--font);font-size:17px;line-height:1.5;color:var(--ink);
  background:
    radial-gradient(90% 55% at 50% 0%, #3a3a39 0%, rgba(58,58,57,0) 70%),
    linear-gradient(180deg, #262625 0%, #161616 26%, #0f0f0f 60%, #0a0a0a 100%);
  background-color:var(--black);
  -webkit-font-smoothing:antialiased;
}
/* grana analogica sopra al gradiente (Resource Boy Noise 010) */
body::before{content:"";position:fixed;inset:0;z-index:0;pointer-events:none;background:url("img/grain.png") 0 0/300px 300px repeat;opacity:.07;mix-blend-mode:screen}
body>*{position:relative;z-index:1}
img{max-width:100%;display:block;-webkit-touch-callout:none}
img,a{-webkit-user-drag:none}
a{color:inherit}
button{font:inherit;color:inherit}
::selection{background:var(--ink);color:var(--black)}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.wrap{width:min(var(--wrap),100% - 2*var(--gutter));margin-inline:auto}
.icon svg{width:100%;height:100%;display:block}

/* ---------- Testatine piccole (come le running head di TENSEGRITAS) ---------- */
.kicker{display:inline-flex;align-items:center;gap:10px;margin:0 0 18px;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase}
.kicker .num{color:var(--ink)}
.kicker .sep{width:28px;height:1px;background:var(--line)}
.gt{font-weight:400;opacity:.7}

/* ---------- Barra in alto ---------- */
.site-header{position:sticky;top:0;z-index:50;border-bottom:1px solid var(--line-soft);background:rgba(10,10,10,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.site-header .wrap{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;flex:none}
.brand img{height:26px;width:auto}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.12em;text-decoration:none;text-transform:uppercase;white-space:nowrap;transition:color 120ms linear}
.nav a:hover{color:var(--ink)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.lang button{min-width:36px;height:32px;padding:0 9px;border:0;border-left:1px solid var(--line);background:transparent;color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.08em;cursor:pointer;transition:background-color 120ms linear,color 120ms linear}
.lang button:first-child{border-left:0}
.lang button:hover{color:var(--ink);background:var(--box-2)}
.lang button[aria-pressed="true"]{background:var(--ink);color:var(--black)}

/* ---------- Pulsanti ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:42px;padding:10px 18px;border:1px solid var(--ink);border-radius:var(--radius);background:var(--ink);color:var(--black);font-size:13px;font-weight:700;letter-spacing:.04em;text-decoration:none;cursor:pointer;transition:background-color 120ms linear,color 120ms linear,border-color 120ms linear}
.btn:hover{background:transparent;color:var(--ink)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink)}
.btn .icon{width:16px;height:16px}

/* ---------- Apertura ---------- */
.hero{padding:clamp(56px,9vw,120px) 0 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(300px,.8fr);gap:clamp(32px,6vw,88px);align-items:end}
.hero-wordmark{width:min(560px,100%);height:auto;margin:6px 0 34px}
.hero h1{margin:0;font-size:clamp(38px,5.4vw,72px);font-weight:700;line-height:.98;letter-spacing:-.02em;max-width:17ch}
.hero .lead{max-width:56ch;margin:22px 0 0;color:var(--muted);font-size:clamp(16px,1.4vw,19px);line-height:1.55}

.downloads{display:flex;flex-direction:column;gap:12px}
.dl{position:relative;display:grid;grid-template-columns:44px 1fr auto;align-items:center;gap:16px;width:100%;min-height:84px;padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(28,28,27,.72);color:var(--ink);text-align:left;text-decoration:none;cursor:pointer;transition:border-color 120ms linear,background-color 120ms linear}
.dl:hover{border-color:var(--ink);background:rgba(36,36,35,.9)}
.dl.primary{background:var(--ink);border-color:var(--ink);color:var(--black)}
.dl.primary:hover{background:#ffffff}
.dl .dl-icon{width:36px;height:36px;padding:7px;border:1px solid currentColor;border-radius:var(--radius);opacity:.9}
.dl strong{display:block;font-size:19px;font-weight:700;letter-spacing:-.005em;line-height:1.15}
.dl small{display:block;margin-top:3px;font-size:13px;opacity:.72}
.dl .dl-arrow{width:18px;height:18px;opacity:.6}
.dl-note{margin:6px 0 0;color:var(--faint);font-size:12px}
.dl-note a{color:var(--muted)}
.mac-choice{display:none;grid-template-columns:1fr 1fr;gap:8px;margin-top:-4px}
.mac-choice.open{display:grid}
.mac-choice button{min-height:56px;padding:10px 12px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(20,20,20,.8);text-align:left;cursor:pointer;transition:border-color 120ms linear}
.mac-choice button:hover{border-color:var(--ink)}
.mac-choice strong{display:block;font-size:15px}
.mac-choice small{display:block;color:var(--muted);font-size:12px}

/* schermata dell'app con crocini di registro agli angoli */
.hero-shot{position:relative;margin:clamp(56px,8vw,96px) auto 0}
.frame{position:relative;border:1px solid var(--line);border-radius:4px;overflow:hidden;background:var(--bg);box-shadow:0 40px 120px rgba(0,0,0,.65),0 0 0 1px rgba(0,0,0,.4)}
.frame img{width:100%;height:auto}
.reg{position:absolute;width:26px;height:26px;background:var(--ink);opacity:.45;-webkit-mask:url("img/crosshair.svg") center/contain no-repeat;mask:url("img/crosshair.svg") center/contain no-repeat;pointer-events:none}
.reg.tl{left:-40px;top:-40px}.reg.tr{right:-40px;top:-40px}.reg.bl{left:-40px;bottom:-40px}.reg.br{right:-40px;bottom:-40px}

/* ---------- Frase centrale (come "The fastest way…" dell'ispirazione) ---------- */
.statement{padding:clamp(72px,10vw,140px) 0 clamp(40px,6vw,72px);text-align:center}
.statement p{margin:0 auto;max-width:22ch;font-size:clamp(30px,4.2vw,56px);font-weight:700;line-height:1.02;letter-spacing:-.02em}
.statement p .m{color:var(--muted)}
.statement .rule{width:64px;height:1px;margin:30px auto 0;background:var(--line)}

/* ---------- Sezioni ---------- */
.section{padding:clamp(64px,9vw,120px) 0;border-top:1px solid var(--line-soft)}
.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px 48px;align-items:end;margin-bottom:clamp(36px,5vw,64px)}
.section-head h2{margin:0;font-size:clamp(32px,4vw,52px);font-weight:700;line-height:1;letter-spacing:-.02em}
.section-head p{margin:0;color:var(--muted);max-width:52ch}

/* Funzioni: griglia 2 × 3 come l'ispirazione */
.features{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border-top:1px solid var(--line)}
.feature{display:grid;grid-template-columns:48px 1fr;gap:20px;padding:34px 32px 34px 0;border-bottom:1px solid var(--line)}
.feature:nth-child(even){padding-left:32px;padding-right:0;border-left:1px solid var(--line)}
.feature .icon{width:44px;height:44px;padding:10px;border:1px solid var(--line);border-radius:var(--radius);color:var(--ink)}
.feature h3{margin:2px 0 8px;font-size:21px;font-weight:700;letter-spacing:-.005em}
.feature p{margin:0;color:var(--muted);font-size:16px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
.badge{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius);color:var(--muted);font-size:13px}
.badge .icon{width:16px;height:16px;color:var(--ink)}

/* Come funziona: sei passaggi */
.steps{position:relative;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:0;margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
/* il fantino HVNTER corre sulla linea degli step, verso il 06 (omaggio a Muybridge) */
.steps::before{content:"";position:absolute;right:0;bottom:100%;width:62px;height:42px;margin-bottom:-1px;background:var(--muted);-webkit-mask:url("img/horse.svg") right bottom/contain no-repeat;mask:url("img/horse.svg") right bottom/contain no-repeat;pointer-events:none}
.step{padding:22px 18px 8px 0;border-right:1px solid var(--line-soft)}
.step:not(:first-child){padding-left:18px}
.step:last-child{border-right:0}
.step .n{display:block;margin-bottom:26px;color:var(--faint);font-size:12px;font-weight:700;letter-spacing:.14em}
.step h3{margin:0 0 8px;font-size:22px;font-weight:700}
.step p{margin:0;color:var(--muted);font-size:15px;line-height:1.45}

/* Schermate: schede come le "Screenshots" dell'ispirazione */
.tabs{display:flex;flex-wrap:wrap;gap:0;margin-bottom:22px;border:1px solid var(--line);border-radius:var(--radius);width:max-content;max-width:100%;overflow:hidden}
.tabs button{padding:11px 16px;border:0;border-left:1px solid var(--line);background:transparent;color:var(--muted);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;cursor:pointer;transition:background-color 120ms linear,color 120ms linear}
.tabs button:first-child{border-left:0}
.tabs button:hover{color:var(--ink)}
.tabs button[aria-selected="true"]{background:var(--ink);color:var(--black)}
.gallery .frame img{transition:opacity 220ms ease}
.gallery .caption{display:flex;justify-content:space-between;gap:20px;margin-top:16px;color:var(--muted);font-size:14px}
.gallery .caption strong{color:var(--ink);font-weight:700}

/* Download */
.dl-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.card{display:flex;flex-direction:column;gap:22px;padding:32px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(24,24,23,.72)}
.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px}
.card h3{margin:0;font-size:30px;font-weight:700;letter-spacing:-.01em}
.card .req{margin:4px 0 0;color:var(--muted);font-size:14px}
.card .os-icon{width:40px;height:40px;padding:8px;border:1px solid var(--line);border-radius:var(--radius)}
.files{margin:0;padding:0;list-style:none;border-top:1px solid var(--line)}
.files li{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
.files li>span:last-child{color:var(--muted);white-space:nowrap}
.files .file-name{display:flex;align-items:center;gap:10px}
.files .icon{width:16px;height:16px;color:var(--muted)}
.chip{align-self:flex-start;display:inline-flex;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.chip button{padding:9px 14px;border:0;border-left:1px solid var(--line);background:transparent;color:var(--muted);font-size:13px;font-weight:700;cursor:pointer}
.chip button:first-child{border-left:0}
.chip button[aria-pressed="true"]{background:var(--ink);color:var(--black)}
.chip-help{margin:-12px 0 0;color:var(--faint);font-size:12px}
.install{margin:0;padding:0;list-style:none;counter-reset:inst}
.install li{position:relative;padding:0 0 10px 34px;color:var(--muted);font-size:15px;counter-increment:inst}
.install li::before{content:counter(inst,decimal-leading-zero);position:absolute;left:0;top:1px;color:var(--ink);font-size:12px;font-weight:700;letter-spacing:.08em}
.card .btn{align-self:flex-start;min-height:50px;padding:12px 22px;font-size:14px}
.card .alt{margin:-10px 0 0;color:var(--faint);font-size:12px}
.card .alt a{color:var(--muted)}

/* Supportaci */
#supporta .kicker{position:relative;top:-2px}
.support-card{flex-direction:row;align-items:center;justify-content:space-between;gap:24px 48px}
.support-points{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}
.support-points li{display:flex;gap:10px;color:var(--muted);font-size:15px}
.support-points .icon{flex:none;width:16px;height:16px;margin-top:3px;color:var(--ink)}
.support-card .btn{align-self:center;flex:none;padding:12px 28px}

/* Riquadro nota con filo sottile, come i "TESI STRATEGICA >" di TENSEGRITAS */
.note{display:grid;grid-template-columns:auto 1fr;gap:6px 18px;margin-top:16px;padding:18px 22px;border:1px solid var(--line);border-left:2px solid var(--ink);border-radius:var(--radius);background:rgba(20,20,20,.7)}
.note .label{color:var(--ink);font-size:11px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;white-space:nowrap;padding-top:3px}
.note p{margin:0;color:var(--muted);font-size:15px}

/* Avviso dopo il clic su download */
.toast{position:fixed;left:50%;bottom:24px;z-index:100;width:min(560px,calc(100% - 32px));padding:14px 18px;border:1px solid var(--line);border-left:2px solid var(--ink);border-radius:var(--radius);background:rgba(20,20,20,.96);color:var(--ink);font-size:14px;box-shadow:0 20px 60px rgba(0,0,0,.6);transform:translate(-50%,20px);opacity:0;pointer-events:none;transition:opacity 160ms linear,transform 160ms linear}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast span{display:block;margin-top:2px;color:var(--muted);font-size:13px}

/* Piè di pagina */
.site-footer{padding:56px 0 64px;border-top:1px solid var(--line-soft)}
.site-footer .wrap{display:grid;grid-template-columns:1fr auto;gap:28px 48px;align-items:end}
.site-footer .brand img{height:30px}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:flex-end}
.footer-links a{color:var(--muted);font-size:13px;text-decoration:none}
.footer-links a:hover{color:var(--ink)}
.footer-meta{grid-column:1/-1;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:22px;border-top:1px solid var(--line-soft);color:var(--faint);font-size:12px;letter-spacing:.06em;text-transform:uppercase}
.footer-meta .mark{display:inline-flex;align-items:center;gap:10px}
.footer-meta .mark i{width:14px;height:14px;background:var(--faint);-webkit-mask:url("img/crosshair.svg") center/contain no-repeat;mask:url("img/crosshair.svg") center/contain no-repeat}

/* Comparsa discreta allo scorrimento */
.reveal{opacity:0;transform:translateY(14px);transition:opacity 520ms ease,transform 520ms ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Schermi più stretti ---------- */
/* Il menu in alto (5 voci, in francese le più lunghe) sta su una riga solo da ~1080px */
@media (max-width:1080px){
  .nav{display:none}
  .site-header .lang{margin-left:auto}
}
@media (max-width:1000px){
  .hero-grid{grid-template-columns:1fr;align-items:start}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr))}
  .step:nth-child(3){border-right:0}
  .step:nth-child(4){padding-left:0}
  .step:nth-child(n+4){border-top:1px solid var(--line-soft)}
  .reg{display:none}
}
@media (max-width:760px){
  body{font-size:16px}
  .nav{display:none}
  .site-header .wrap{gap:14px}
  .kicker{flex-wrap:wrap;gap:4px 10px}
  .site-header .lang{margin-left:auto}
  .section-head{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .feature,.feature:nth-child(even){padding:26px 0;border-left:0}
  .steps{grid-template-columns:1fr 1fr}
  .step,.step:not(:first-child){padding:20px 14px 10px 0;border-right:0}
  .step:nth-child(even){padding-left:14px;border-left:1px solid var(--line-soft)}
  .step:nth-child(n+3){border-top:1px solid var(--line-soft)}
  .dl-cards{grid-template-columns:1fr}
  .card{padding:24px}
  .support-card{flex-direction:column;align-items:flex-start}
  .support-card .btn{align-self:flex-start}
  .site-footer .wrap{grid-template-columns:1fr}
  .footer-links{justify-content:flex-start}
  .tabs{width:100%}
  .tabs button{flex:1 1 33%;padding:10px 8px}
  .gallery .caption{flex-direction:column}
}
@media (max-width:420px){
  .header-cta{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  *{transition:none!important}
}