/* ============================================================================
   Valmier website — shared UI kit (v1, 2026-10-23)
   One design system for every page: site/index.html, guides, reseller panel,
   recent purchases. Persian RTL, dark "Vormir at dusk" palette from docs/BRAND.md.

   Rules:
   - No outside fonts, scripts, images or CDNs. Only /fonts/, /icon.svg.
   - Body text never below 13px; interactive targets >= 44px on touch.
   - Gold (--soul/--gold) is the rare accent; crimson (--crimson) is the action colour.
   - Motion is decoration: ui.js + the .js class gate reveals; reduced-motion wins.

   Architecture: tokens -> base -> layout -> components -> motion -> a11y.
   Page CSS loads AFTER this file and only adds page-specific layout.
   ========================================================================== */

/* ---- fonts (self-hosted; preload the 400 face in each page head) ---------- */
@font-face{font-family:"Vazirmatn";src:url(/fonts/Vazirmatn-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Vazirmatn";src:url(/fonts/Vazirmatn-Bold.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Lalezar";src:url(/fonts/Lalezar-Regular.woff2) format("woff2");font-weight:400;font-display:swap}

/* ---- tokens -------------------------------------------------------------- */
:root{
  /* surfaces */
  --abyss:#0E0709;
  --night:#1C0D14;
  --night-2:#241119;
  --night-3:#2C1621;
  --dusk:#4A1E3A;
  --violet:#7A2C66;

  /* brand + accents */
  --crimson:#B3122E;
  --crimson-hi:#C4163A;
  --ember:#E0382B;
  --soul:#F2862A;
  --gold:#FFD9A8;
  --sky:linear-gradient(135deg,#C4163A 0%,#8E1B45 45%,#4A1E3A 100%);
  --sky-soft:linear-gradient(135deg,rgba(196,22,58,.22),rgba(74,30,58,.28));

  /* text */
  --bone:#F4ECE6;
  --ash:#C9B8B0;
  --ash-dim:#A99590;
  --ink:  #2A0D16;

  /* status */
  --ok:#3FB27F;
  --warn:#F2862A;
  --bad:#F0604E;

  /* lines + elevation */
  --line:rgba(246,239,233,.09);
  --line-2:rgba(246,239,233,.16);
  --line-3:rgba(246,239,233,.26);
  --card-top:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,0) 42%);
  --shadow-1:0 20px 44px -34px rgba(0,0,0,.95);
  --shadow-2:0 34px 80px -48px rgba(0,0,0,1);
  --glow-crimson:0 18px 44px -22px rgba(179,18,46,.85);
  --glow-soul:0 18px 44px -22px rgba(242,134,42,.55);

  /* shape */
  --r-xs:10px;
  --r-sm:14px;
  --r-md:18px;
  --r-lg:22px;
  --r-xl:30px;
  --r-pill:999px;

  /* type */
  --display:"Lalezar","Vazirmatn",Tahoma,sans-serif;
  --text:"Vazirmatn",Tahoma,"Segoe UI",system-ui,sans-serif;
  --fs-h1:clamp(2.35rem,5.2vw,4.1rem);
  --fs-h2:clamp(1.8rem,3.4vw,2.7rem);
  --fs-h3:clamp(1.12rem,1.7vw,1.32rem);
  --fs-body:1.03rem;
  --fs-lead:clamp(1.02rem,1.5vw,1.16rem);
  --fs-small:.84rem;

  /* motion */
  --ease:cubic-bezier(.2,.8,.2,1);
  --spring:cubic-bezier(.3,1.4,.45,1);
  --nav-h:70px;

  color-scheme:dark;
}

/* ---- base ---------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
html:focus-within{scroll-behavior:smooth}
html{scroll-padding-top:calc(var(--nav-h) + 22px)}
html,body{margin:0;padding:0}
body{
  min-height:100svh;
  font:var(--fs-body)/1.9 var(--text);
  color:var(--bone);
  background:
    radial-gradient(1100px 560px at 88% -12%,rgba(122,44,102,.20),transparent 62%),
    radial-gradient(820px 480px at 4% -6%,rgba(179,18,46,.16),transparent 60%),
    var(--abyss);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
/* paper grain: cheap, static, never blended */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.028;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
body>*{position:relative;z-index:1}
img,svg{max-width:100%}
img{height:auto;display:block}
a{color:var(--gold);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:#FFE7C4}
button{font:inherit}
::selection{background:rgba(242,134,42,.32);color:#fff}
:focus-visible{outline:2px solid var(--soul);outline-offset:3px;border-radius:6px}
hr{border:0}

h1,h2,h3,h4{margin:0;color:var(--bone);font-weight:700;text-wrap:balance}
h1,.h1{font:400 var(--fs-h1)/1.24 var(--display)}
h2,.h2{font:400 var(--fs-h2)/1.34 var(--display)}
h3,.h3{font:700 var(--fs-h3)/1.55 var(--text)}
p{margin:0 0 1em;text-wrap:pretty}
p:last-child{margin-bottom:0}
strong,b{color:var(--bone);font-weight:700}
small{font-size:var(--fs-small)}

/* numbers stay LTR even inside RTL text */
.num{direction:ltr;unicode-bidi:isolate;font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

/* screen-reader only + skip link */
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:fixed;top:10px;inset-inline-start:10px;z-index:200;transform:translateY(-160%);background:var(--bone);color:var(--ink);
  padding:10px 16px;border-radius:12px;font-weight:700;transition:transform .2s var(--ease)}
.skip:focus{transform:none;color:var(--ink)}

/* ---- layout -------------------------------------------------------------- */
.container,.wrap{width:min(100% - clamp(32px,7vw,80px),1160px);margin-inline:auto}
.container--narrow{width:min(100% - clamp(32px,7vw,80px),840px);margin-inline:auto}
.section{padding-block:clamp(58px,8.4vw,104px);position:relative}
.section--flush{padding-block:0}
.section-head{max-width:680px;margin:0 0 clamp(26px,3.6vw,42px)}
.section-head--center{margin-inline:auto;text-align:center}
.section-head h2{margin:0 0 10px}
.section-head p{margin:0;color:var(--ash);font-size:var(--fs-lead);line-height:1.85}
.stack{display:flex;flex-direction:column;gap:14px}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* signature horizon rule — one per section/footer, never decorative clutter */
.horizon{height:1px;border:0;margin:0;background:linear-gradient(90deg,transparent,rgba(242,134,42,.7) 35%,rgba(255,217,168,.9) 50%,rgba(242,134,42,.55) 65%,transparent);
  box-shadow:0 0 20px 1px rgba(242,134,42,.28)}

/* ---- nav ----------------------------------------------------------------- */
.site-nav{
  position:fixed;inset-inline:0;top:0;z-index:100;
  transition:background .35s var(--ease),border-color .35s var(--ease),backdrop-filter .35s var(--ease),box-shadow .35s var(--ease);
  border-bottom:1px solid transparent;
}
.site-nav.is-scrolled{
  background:rgba(17,17,19,.74);
  -webkit-backdrop-filter:blur(18px) saturate(150%);
  backdrop-filter:blur(18px) saturate(150%);
  border-bottom-color:var(--line);
  box-shadow:0 18px 40px -34px #000;
}
.site-nav__inner{display:flex;align-items:center;gap:26px;min-height:var(--nav-h);transition:min-height .3s var(--ease)}
.site-nav.is-scrolled .site-nav__inner{min-height:60px}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;color:var(--bone);font:400 23px/1 var(--display)}
.brand:hover{color:var(--bone)}
.brand img{width:38px;height:38px;border-radius:11px;box-shadow:0 10px 24px -12px rgba(224,56,43,.9);transition:transform .5s var(--spring)}
.brand:hover img{transform:rotate(-7deg) scale(1.05)}
.nav-links{display:flex;align-items:center;gap:2px;flex:1}
.nav-links a{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 12px;border-radius:var(--r-xs);
  color:var(--ash);font-size:.88rem;font-weight:400;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--bone);background:rgba(246,239,233,.05)}
.nav-links a.is-active{color:var(--bone);background:rgba(246,239,233,.06)}
.nav-links a.is-active::after{content:"";position:absolute;inset-inline:12px;bottom:2px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--soul),var(--gold))}
.nav-links a[aria-current="page"]{color:var(--bone)}
.nav-actions{display:flex;align-items:center;gap:8px;flex:none;margin-inline-start:auto}
.nav-actions .nav-buy{display:none}
.nav-toggle{
  display:none;width:46px;height:46px;border-radius:14px;border:1px solid var(--line-2);
  background:rgba(246,239,233,.04);color:var(--bone);cursor:pointer;place-items:center;
  transition:background .2s,border-color .2s}
.nav-toggle:hover{background:rgba(246,239,233,.08);border-color:var(--line-3)}
.nav-toggle span{display:block;width:19px;height:1.8px;border-radius:2px;background:currentColor;transition:transform .3s var(--ease),opacity .2s}
.nav-toggle span+span{margin-top:5px}
body.nav-open .nav-toggle span:first-child{transform:translateY(3.4px) rotate(45deg)}
body.nav-open .nav-toggle span:last-child{transform:translateY(-3.4px) rotate(-45deg)}

/* mobile sheet */
.nav-scrim{position:fixed;inset:0;z-index:99;background:rgba(9,9,11,.62);opacity:0;transition:opacity .3s var(--ease);
  -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}
.nav-scrim.is-open{opacity:1}
.nav-sheet{
  position:fixed;z-index:102;inset-inline:0;top:var(--nav-h);max-height:calc(100svh - var(--nav-h));overflow-y:auto;overscroll-behavior:contain;
  padding:22px clamp(20px,6vw,40px) 34px;
  background:linear-gradient(180deg,rgba(28,28,30,.98),rgba(17,17,19,.99));
  border-bottom:1px solid var(--line-2);
  box-shadow:0 40px 80px -30px #000;
  transform:translateY(-12px);opacity:0;transition:transform .35s var(--ease),opacity .3s var(--ease);
}
.nav-sheet.is-open{transform:none;opacity:1}
.nav-sheet__links{display:grid;gap:2px;margin-bottom:22px}
.nav-sheet__links a{display:flex;align-items:center;justify-content:space-between;min-height:52px;padding:0 4px;
  color:var(--bone);font:400 1.32rem/1.4 var(--display);border-bottom:1px solid var(--line)}
.nav-sheet__links a::after{content:"←";color:var(--soul);font-size:1rem;transform:scaleX(-1);opacity:.7}
.nav-sheet__links a:hover{color:var(--gold)}
.nav-sheet__cta{display:grid;gap:10px;margin-top:18px}
.nav-sheet__note{margin:20px 0 0;color:var(--ash-dim);font-size:.82rem;line-height:1.9}

/* ---- buttons ------------------------------------------------------------- */
.btn{
  --btn-h:48px;
  position:relative;isolation:isolate;overflow:hidden;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:var(--btn-h);padding:0 22px;border:1px solid transparent;border-radius:var(--r-sm);
  font:700 .94rem/1.3 var(--text);color:#fff;background:var(--sky);cursor:pointer;text-align:center;
  box-shadow:var(--glow-crimson),inset 0 1px 0 rgba(255,255,255,.18);
  transition:transform .25s var(--spring),filter .2s,background .2s,border-color .2s,box-shadow .25s;
  -webkit-tap-highlight-color:transparent;
}
.btn::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(105deg,transparent 32%,rgba(255,255,255,.26) 50%,transparent 68%);transform:translateX(130%)}
.btn:hover{filter:brightness(1.06);transform:translateY(-1px);color:#fff}
.btn:hover::before{transform:translateX(-130%);transition:transform .9s ease}
.btn:active{transform:translateY(0) scale(.985)}
.btn svg{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.btn--ghost{background:rgba(246,239,233,.045);border-color:var(--line-2);color:var(--bone);box-shadow:inset 0 1px 0 rgba(255,255,255,.05)}
.btn--ghost:hover{background:rgba(246,239,233,.085);border-color:rgba(242,134,42,.45);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),var(--glow-soul)}
.btn--light{background:var(--bone);color:var(--ink);box-shadow:0 18px 40px -22px rgba(0,0,0,.9),inset 0 1px 0 #fff}
.btn--light:hover{color:var(--ink);filter:brightness(.97)}
.btn--soul{background:linear-gradient(135deg,#FFBE74,var(--soul));color:#2A1206;box-shadow:var(--glow-soul),inset 0 1px 0 rgba(255,255,255,.35)}
.btn--soul:hover{color:#2A1206}
.btn--quiet{background:none;border-color:transparent;box-shadow:none;color:var(--gold);padding:0 6px;min-height:44px}
.btn--quiet:hover{background:none;color:#FFE7C4;filter:none}
.btn--quiet svg{transition:transform .25s var(--ease)}
.btn--quiet:hover svg{transform:translateX(-3px)}
.btn--sm{--btn-h:40px;padding:0 15px;border-radius:12px;font-size:.85rem}
.btn--lg{--btn-h:54px;padding:0 28px;border-radius:16px;font-size:1rem}
.btn--block{display:flex;width:100%}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.55;pointer-events:none}
.btn:focus-visible{outline-offset:3px}

.icon-btn{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:13px;border:1px solid var(--line-2);
  background:rgba(246,239,233,.04);color:var(--ash);cursor:pointer;transition:.2s}
.icon-btn:hover{color:var(--bone);border-color:var(--line-3);background:rgba(246,239,233,.08)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}

/* ---- kicker / tags / chips ---------------------------------------------- */
.kicker{display:inline-flex;align-items:center;gap:10px;margin:0 0 14px;color:var(--soul);font-size:.82rem;font-weight:700;line-height:1}
.kicker::before{content:"";width:20px;height:1px;background:linear-gradient(90deg,rgba(242,134,42,.1),var(--soul))}
.tag{display:inline-flex;align-items:center;gap:5px;padding:3px 9px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:rgba(246,239,233,.06);color:var(--ash);font-size:.75rem;font-weight:700;line-height:1.7;white-space:nowrap;font-variant-numeric:tabular-nums}
.tag--ok{color:#8BE3B9;background:rgba(79,191,138,.12);border-color:rgba(79,191,138,.28)}
.tag--soul{color:#FFC78F;background:rgba(242,134,42,.12);border-color:rgba(242,134,42,.3)}
.tag--crimson{color:#FFB3B9;background:rgba(179,18,46,.2);border-color:rgba(179,18,46,.45)}
.tag--plain{background:transparent}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px rgba(79,191,138,.14)}

/* ---- cards --------------------------------------------------------------- */
.card{position:relative;border-radius:var(--r-lg);border:1px solid var(--line);overflow:hidden;
  background:linear-gradient(180deg,rgba(29,29,31,.92),rgba(18,18,20,.96));box-shadow:var(--shadow-1)}
.card::before{content:"";position:absolute;inset:0 0 auto;height:62%;border-radius:inherit;pointer-events:none;background:var(--card-top);opacity:.9}
.card>*{position:relative}
.card--pad{padding:clamp(18px,2.6vw,28px)}
.card--feature{border-color:transparent;
  background:linear-gradient(180deg,rgba(30,30,32,.95),rgba(18,18,20,.97)) padding-box,
             linear-gradient(150deg,rgba(255,217,168,.34),rgba(255,255,255,.06) 38%,rgba(179,18,46,.42)) border-box}
.card--interactive{display:block;color:inherit;transition:transform .45s var(--ease),border-color .35s,box-shadow .35s}
.card--interactive:hover{transform:translateY(-4px);border-color:rgba(242,134,42,.38);color:inherit;box-shadow:var(--shadow-2),0 0 0 1px rgba(242,134,42,.08)}
.card--quiet{background:rgba(246,239,233,.035);box-shadow:none}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px clamp(18px,2.6vw,26px);border-bottom:1px solid var(--line)}
.card-head h3{margin:0}
.card-body{padding:clamp(18px,2.6vw,26px)}
.split-line{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}

/* icon tile used in cards/features/lists */
.tile{width:48px;height:48px;flex:none;border-radius:14px;display:grid;place-items:center;color:var(--gold);
  background:linear-gradient(150deg,rgba(196,22,58,.26),rgba(74,30,58,.3));border:1px solid rgba(224,56,43,.28);
  transition:transform .45s var(--spring),border-color .3s}
.tile svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.85;stroke-linecap:round;stroke-linejoin:round}
.tile--soul{background:linear-gradient(150deg,rgba(242,134,42,.3),rgba(74,30,58,.3));border-color:rgba(242,134,42,.34);color:#FFD3A4}
.tile--ok{background:linear-gradient(150deg,rgba(79,191,138,.22),rgba(74,30,58,.3));border-color:rgba(79,191,138,.3);color:#8BE3B9}
.card--interactive:hover .tile{transform:translateY(-2px) rotate(-4deg);border-color:rgba(242,134,42,.5)}

/* ---- stat strip ---------------------------------------------------------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);background:linear-gradient(180deg,rgba(29,29,31,.78),rgba(16,16,18,.9));box-shadow:var(--shadow-1)}
.stat-strip__item{padding:clamp(16px,2.4vw,26px) 14px;text-align:center;border-inline-start:1px solid var(--line)}
.stat-strip__item:first-child{border-inline-start:0}
.stat-strip b{display:block;font:400 clamp(1.8rem,3.4vw,2.55rem)/1.15 var(--display);
  background:linear-gradient(180deg,#FFF3E2,#FFB45E 62%,#F2862A);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat-strip span{display:block;margin-top:2px;color:var(--ash);font-size:.8rem;line-height:1.7}
.stat-strip small{color:var(--ash-dim)}

/* ---- forms --------------------------------------------------------------- */
.field{display:flex;flex-direction:column;gap:6px}
.field label{color:var(--ash);font-size:.85rem;font-weight:700}
.field .hint{color:var(--ash-dim);font-size:.76rem}
.input,.select,.textarea{
  width:100%;min-height:48px;padding:11px 14px;border:1px solid var(--line-2);border-radius:var(--r-sm);
  background:rgba(0,0,0,.34);color:var(--bone);font:400 1rem/1.6 var(--text);
  transition:border-color .2s,box-shadow .2s,background .2s}
.input:hover,.textarea:hover{border-color:var(--line-3)}
.input:focus,.select:focus,.textarea:focus{outline:none;border-color:rgba(242,134,42,.65);box-shadow:0 0 0 3px rgba(242,134,42,.16);background:rgba(0,0,0,.42)}
.textarea{min-height:100px;resize:vertical}

/* ---- callouts ------------------------------------------------------------ */
.callout{display:flex;gap:12px;padding:15px 17px;border-radius:var(--r-md);border:1px solid rgba(242,134,42,.28);
  background:rgba(242,134,42,.075);color:var(--ash);font-size:.95rem;line-height:1.9}
.callout svg{width:20px;height:20px;flex:none;margin-top:3px;fill:none;stroke:var(--soul);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.callout b,.callout strong{color:var(--gold)}
.callout--ok{border-color:rgba(79,191,138,.28);background:rgba(79,191,138,.08)}
.callout--ok svg{stroke:var(--ok)}

/* ---- tables -------------------------------------------------------------- */
.table-wrap{overflow-x:auto;border-radius:var(--r-md);border:1px solid var(--line);background:rgba(246,239,233,.025)}
.table{width:100%;border-collapse:collapse;font-size:.93rem;min-width:520px}
.table th,.table td{padding:13px 16px;text-align:start;vertical-align:middle;border-bottom:1px solid var(--line)}
.table thead th{color:var(--ash);font-size:.8rem;font-weight:700;background:rgba(246,239,233,.04);white-space:nowrap}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr{transition:background .2s}
.table tbody tr:hover{background:rgba(246,239,233,.035)}
.table .yes{color:#8BE3B9;font-weight:700}
.table .no{color:var(--ash-dim)}
.table td:first-child,.table th:first-child{padding-inline-start:18px}

/* ---- breadcrumbs --------------------------------------------------------- */
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0 0 18px;color:var(--ash-dim);font-size:.82rem}
.crumbs a{color:var(--ash)}
.crumbs a:hover{color:var(--gold)}
.crumbs [aria-current="page"]{color:var(--ash)}

/* ---- footer -------------------------------------------------------------- */
.site-footer{margin-top:clamp(56px,8vw,100px);border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(22,22,24,.45),rgba(13,13,15,.9))}
.site-footer__main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:clamp(24px,4vw,46px);padding-block:clamp(36px,5vw,58px) 30px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand p{margin:0 0 16px;color:var(--ash);font-size:.9rem;line-height:1.9;max-width:34ch}
.footer-col h4{margin:0 0 12px;color:var(--ash-dim);font-size:.78rem;font-weight:700;letter-spacing:0}
.footer-col a{display:flex;align-items:center;gap:7px;padding:5px 0;color:var(--ash);font-size:.9rem;min-height:30px}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:20px;border-top:1px solid var(--line);color:var(--ash-dim);font-size:.8rem}
.footer-bottom .row{gap:16px}
.footer-note{display:flex;align-items:center;gap:8px}
.footer-note .dot{width:6px;height:6px}

/* ---- back-to-top --------------------------------------------------------- */
.to-top{position:fixed;right:22px;bottom:24px;z-index:80;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;border:1px solid var(--line-2);background:rgba(22,22,24,.86);color:var(--bone);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);cursor:pointer;opacity:0;transform:translateY(10px);
  pointer-events:none;transition:opacity .3s,transform .3s var(--ease),border-color .2s}
.to-top.is-on{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:rgba(242,134,42,.5);color:var(--gold)}
.to-top svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:600px){.to-top{right:14px;bottom:16px;width:42px;height:42px;border-radius:13px}}

/* ---- reading progress (guide pages) ------------------------------------- */
.read-bar{position:fixed;top:0;inset-inline:0;height:2px;z-index:110;transform-origin:right;transform:scaleX(var(--read,0));
  background:linear-gradient(270deg,var(--gold),var(--soul),var(--ember));box-shadow:0 0 12px rgba(242,134,42,.6);pointer-events:none}

/* ---- reveal / motion ----------------------------------------------------- */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .65s var(--ease),transform .65s var(--ease);transition-delay:calc(var(--d,0)*65ms)}
.js [data-reveal].is-in{opacity:1;transform:none}
.js [data-reveal="fade"]{transform:none}
@media (prefers-reduced-motion:reduce){
  html:focus-within{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}
  [data-reveal]{opacity:1!important;transform:none!important}
}

/* ---- responsive ---------------------------------------------------------- */
@media(max-width:1180px){
  .nav-links{gap:0}
  .nav-links a{padding:0 9px;font-size:.84rem}
}
@media(max-width:1040px){
  .nav-links{display:none}
  .nav-toggle{display:grid}
  .nav-actions .nav-buy{display:inline-flex}
  .site-footer__main{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:760px){
  :root{--nav-h:64px}
  .brand{font-size:21px}
  .brand img{width:34px;height:34px;border-radius:10px}
  .stat-strip{grid-template-columns:1fr 1fr}
  .stat-strip__item:nth-child(3){border-inline-start:0}
  .stat-strip__item{border-top:1px solid var(--line)}
  .stat-strip__item:nth-child(-n+2){border-top:0}
  .section{padding-block:clamp(48px,9vw,72px)}
  .site-footer__main{grid-template-columns:1fr 1fr;gap:24px}
  .footer-bottom{justify-content:flex-start}
}
@media(max-width:480px){
  .nav-login{display:none}
  .btn{--btn-h:46px;padding:0 18px}
  .btn--sm{--btn-h:40px}
}

/* js-off safety: content is fully readable without the script */
@media (scripting:none){
  [data-reveal]{opacity:1!important;transform:none!important}
  .nav-toggle,.nav-sheet{display:none!important}
  .nav-links{display:none!important}
}