/* ============================================================
   FuriaLoans - variant A "Ascua" (ember).
   Extracted from the approved design sketch furialoans-a-ascua.html
   into a production stylesheet. Design 1:1 with the sketch, plus
   production additions: live slider fill, loading / error states,
   locked term slider and an accessible CTA modal.
   No frameworks, no CDN, all local. Fonts via fonts.css (own copy).
   ============================================================ */
:root{
  --pri:#B91C1C; --pri-bright:#DC2626; --pri-dark:#991B1B;
  --pri-xlight:#FEF2F2; --pri-light:#FEE2E2;
  --bronze:#C67B3E; --bronze-lit:#E4A85E; --bronze-deep:#7A3E1D;
  --paper:#F9FAFB; --white:#FFFFFF; --ink:#111827; --ink-2:#374151;
  --muted:#6B7280; --muted-2:#9CA3AF; --border:#E5E7EB; --border-2:#F1F0EE;
  --dark:#17110E; --dark-2:#241A15; --dark-line:rgba(255,255,255,.10);
  --on-dark:#F6EFE9; --on-dark-mut:#B8A99C;
  --wrap:1180px; --radius:16px; --radius-sm:11px;
  --shadow:0 24px 60px -20px rgba(23,17,14,.35);
  --shadow-lift:0 30px 70px -24px rgba(23,17,14,.45);
}
*{box-sizing:border-box}
/* The [hidden] attribute must always win over component display rules
   (inline-flex / flex / block), otherwise JS toggling `hidden` does nothing. */
[hidden]{display:none !important}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:'DM Sans',system-ui,-apple-system,sans-serif;background:var(--paper);color:var(--ink);
  font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3{margin:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
[id]{scroll-margin-top:100px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---- eyebrow with flame mark ---- */
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.2em;color:var(--pri);margin:0 0 16px}
.eyebrow svg{width:14px;height:14px;flex:none}
.eyebrow.on-dark{color:var(--bronze-lit)}

.h2{font-size:clamp(1.9rem,4vw,2.7rem);font-weight:800;letter-spacing:-0.025em;line-height:1.06}
.lead{font-size:clamp(1rem,1.5vw,1.12rem);color:var(--muted);line-height:1.6;max-width:58ch}
.on-dark .lead,.lead.on-dark{color:var(--on-dark-mut)}

/* ---- buttons ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 28px;border-radius:999px;font-size:1.02rem;font-weight:700;border:1.5px solid transparent;cursor:pointer;transition:transform .16s ease,box-shadow .16s ease;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn-primary{background:linear-gradient(135deg,var(--pri-bright),var(--pri-dark));color:#fff;box-shadow:0 10px 26px -8px rgba(185,28,28,.6),inset 0 1px 1px rgba(255,255,255,.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 34px -10px rgba(185,28,28,.72)}
.btn-lg{padding:17px 32px;font-size:1.08rem;width:100%}
.btn .arrow{transition:transform .18s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* ---- header ---- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(23,17,14,.72);backdrop-filter:blur(14px) saturate(140%);-webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--dark-line)}
.site-header .wrap{display:flex;align-items:center;gap:20px;height:78px}
.brand{display:inline-flex;align-items:center;gap:10px;margin-right:auto}
.brand-mark{width:36px;height:36px;flex:none;display:flex;align-items:center;justify-content:center;border-radius:10px;background:linear-gradient(150deg,rgba(220,38,38,.18),rgba(228,168,94,.1));border:1px solid rgba(228,168,94,.25)}
.brand-mark svg{width:19px;height:19px}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-weight:800;font-size:1.22rem;letter-spacing:-.01em;color:var(--on-dark)}
.brand-name b{background:linear-gradient(115deg,var(--bronze-lit),var(--pri-bright));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{font-size:.68rem;letter-spacing:.22em;text-transform:uppercase;color:var(--on-dark-mut);margin-top:1px}
.nav{display:flex;align-items:center;gap:2px}
.nav a{padding:8px 14px;border-radius:999px;font-size:.92rem;font-weight:600;color:var(--on-dark-mut);transition:color .18s ease,background .18s ease}
.nav a:hover{color:var(--on-dark);background:rgba(255,255,255,.08)}
.lang{display:inline-flex;padding:3px;gap:2px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:999px}
.lang button{border:0;background:transparent;cursor:pointer;font-size:.72rem;font-weight:700;letter-spacing:.04em;color:var(--on-dark-mut);padding:6px 11px;border-radius:999px;transition:color .18s ease,background .18s ease}
.lang button:hover{color:var(--on-dark)}
.lang button[aria-pressed="true"]{color:#fff;background:linear-gradient(135deg,var(--pri-bright),var(--pri-dark))}

/* hamburger: hidden on desktop, shown <=760px (see media query). 44x44 tap
   target; the bars are a single element with ::before/::after. */
.nav-toggle{display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);border-radius:12px;
  background:rgba(255,255,255,.08);cursor:pointer;align-items:center;justify-content:center;flex:none}
.nav-toggle-bars,.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";display:block;width:20px;height:2px;border-radius:2px;background:var(--on-dark);transition:transform .2s ease,opacity .2s ease}
.nav-toggle-bars{position:relative}
.nav-toggle-bars::before{position:absolute;top:-6px}
.nav-toggle-bars::after{position:absolute;top:6px}
.site-header.nav-open .nav-toggle-bars{background:transparent}
.site-header.nav-open .nav-toggle-bars::before{transform:translateY(6px) rotate(45deg)}
.site-header.nav-open .nav-toggle-bars::after{transform:translateY(-6px) rotate(-45deg)}

/* ============================================================
   HERO
   ============================================================ */
.hero{position:relative;background:radial-gradient(120% 90% at 50% -10%,var(--dark-2) 0%,var(--dark) 55%,#100b09 100%);color:var(--on-dark);overflow:hidden;padding:64px 0 0}
.aperture{position:absolute;top:-10%;left:50%;transform:translateX(-50%);width:min(1100px,150vw);aspect-ratio:1;pointer-events:none;z-index:0;opacity:.85;
  background:radial-gradient(circle at center,rgba(220,38,38,.32) 0%,rgba(198,123,62,.15) 26%,rgba(23,17,14,0) 52%),
  repeating-radial-gradient(circle at center,rgba(228,168,94,.14) 0 1px,transparent 1px 46px);
  -webkit-mask-image:radial-gradient(circle at center,#000 0%,#000 40%,transparent 66%);
  mask-image:radial-gradient(circle at center,#000 0%,#000 40%,transparent 66%)}
.hero-inner{position:relative;z-index:3;text-align:center;padding-top:44px}
.hero h1{font-size:clamp(2.2rem,5.4vw,3.6rem);font-weight:800;letter-spacing:-.03em;line-height:1.06;max-width:19ch;margin:0 auto 18px}
.hero h1 .accent{background:linear-gradient(115deg,var(--bronze-lit),var(--pri-bright));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-sub{font-size:clamp(1.02rem,1.7vw,1.2rem);color:var(--on-dark-mut);max-width:52ch;margin:0 auto 8px;line-height:1.55}
.hero .eyebrow{justify-content:center}
.hero-trust{display:inline-flex;align-items:center;gap:9px;margin:20px auto 0;font-size:.84rem;color:var(--on-dark-mut)}
.hero-trust .dot{width:7px;height:7px;border-radius:50%;background:#34D399;box-shadow:0 0 10px #34D399;flex:none}

/* ---- calculator glass panel ---- */
.calc-wrap{position:relative;z-index:3;max-width:640px;margin:36px auto 0}
.calc-panel{position:relative;border-radius:26px;padding:clamp(22px,4vw,38px);color:var(--on-dark);
  background:linear-gradient(165deg,rgba(255,255,255,.14),rgba(255,255,255,.04) 55%,rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.2);backdrop-filter:blur(20px) saturate(150%);-webkit-backdrop-filter:blur(20px) saturate(150%);
  box-shadow:0 46px 100px -34px rgba(0,0,0,.65),inset 0 1px 0 rgba(255,255,255,.4),inset 0 -1px 0 rgba(0,0,0,.28);
  text-align:left}
@supports not ((backdrop-filter:blur(2px)) or (-webkit-backdrop-filter:blur(2px))){.calc-panel{background:linear-gradient(165deg,#2c2019,#1c1410)}}
.calc-field{margin-bottom:22px}
.calc-field-top{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:12px}
.calc-field-label{font-size:.92rem;font-weight:700;color:var(--on-dark)}
.calc-field-value{font-size:1.5rem;font-weight:800;background:linear-gradient(115deg,var(--bronze-lit),var(--pri-bright));-webkit-background-clip:text;background-clip:text;color:transparent}

/* range slider: live fill follows the thumb via --pos (updated in JS on
   'input'). No static shadow faking a fill; the ::before width IS the fill. */
.slider{--pos:60%;position:relative;height:6px;border-radius:999px;background:rgba(255,255,255,.12)}
.slider::before{content:"";position:absolute;inset:0;width:var(--pos);border-radius:999px;background:linear-gradient(90deg,var(--bronze),var(--pri-bright))}
.slider input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:26px;margin:-10px 0 0;background:transparent;position:relative;cursor:pointer}
.slider input[type=range]::-webkit-slider-runnable-track{height:6px;background:transparent}
.slider input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:24px;height:24px;border-radius:50%;margin-top:-9px;
  background:radial-gradient(circle at 32% 28%,#fff,var(--bronze-lit) 55%,var(--pri-bright) 100%);
  border:2px solid rgba(255,255,255,.6);box-shadow:0 4px 14px -2px rgba(0,0,0,.5);cursor:pointer}
.slider input[type=range]::-moz-range-track{height:6px;background:transparent}
.slider input[type=range]::-moz-range-thumb{width:20px;height:20px;border-radius:50%;border:2px solid rgba(255,255,255,.6);
  background:radial-gradient(circle at 32% 28%,#fff,var(--bronze-lit) 55%,var(--pri-bright) 100%);cursor:pointer}
.slider input[type=range]:focus-visible{outline:none}
.slider input[type=range]:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 4px rgba(228,168,94,.45),0 4px 14px -2px rgba(0,0,0,.5)}
.slider input[type=range]:focus-visible::-moz-range-thumb{box-shadow:0 0 0 4px rgba(228,168,94,.45)}
.slider-scale{display:flex;justify-content:space-between;margin-top:8px;font-size:.72rem;color:var(--on-dark-mut)}

/* locked term slider (e.g. PAYDAY30 30/30): shown, disabled, elegant. */
.calc-field.locked .slider{opacity:.55}
.calc-field.locked .slider input[type=range]{cursor:default}
.calc-field.locked .slider input[type=range]::-webkit-slider-thumb{cursor:default}
.calc-field.locked .slider input[type=range]::-moz-range-thumb{cursor:default}
/* :not([hidden]) so the display rule never overrides the hidden attribute
   (the locked-term note is toggled via `hidden` from JS). */
.lock-note:not([hidden]){display:inline-flex;align-items:center;gap:6px;font-size:.72rem;color:var(--on-dark-mut);margin-top:8px}
.lock-note svg{width:11px;height:11px;flex:none}

.details-toggle{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  border-radius:999px;padding:11px 18px;color:var(--on-dark);font-weight:700;font-size:.9rem;cursor:pointer;margin:6px 0 16px;transition:background .16s ease}
.details-toggle:hover{background:rgba(255,255,255,.1)}
.details-toggle .car{width:8px;height:8px;border-right:2px solid var(--on-dark-mut);border-bottom:2px solid var(--on-dark-mut);transform:rotate(45deg);transition:transform .2s ease}
details[open] .details-toggle .car{transform:rotate(225deg)}
details > summary{list-style:none;cursor:pointer}
details > summary::-webkit-details-marker{display:none}
details > summary::marker{content:""}

.d-table{border-top:1px solid var(--dark-line);padding-top:14px;margin-bottom:20px}
.d-row{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:9px 0;border-bottom:1px dashed rgba(255,255,255,.14);font-size:.9rem}
.d-row:last-of-type{border-bottom:0}
.d-label{display:inline-flex;align-items:center;gap:7px;color:var(--on-dark-mut)}
.d-value{font-weight:700;color:var(--on-dark);white-space:nowrap;transition:opacity .18s ease}
.d-row.total{border-top:1px solid rgba(255,255,255,.22);border-bottom:0;margin-top:4px;padding-top:14px}
.d-row.total .d-label{color:var(--on-dark);font-weight:800;font-size:1rem}
.d-row.total .d-value{font-size:1.24rem;background:linear-gradient(115deg,var(--bronze-lit),var(--pri-bright));-webkit-background-clip:text;background-clip:text;color:transparent}
.d-row.rate .d-value{color:var(--bronze-lit)}
.d-date{font-size:.84rem;color:var(--on-dark-mut);text-align:right;margin-top:2px}

/* loading + error states for the live calculator */
.calc-panel.is-loading .d-value{opacity:.4}
.calc-error{display:none;align-items:flex-start;gap:10px;margin:0 0 16px;padding:12px 14px;border-radius:12px;
  background:rgba(220,38,38,.14);border:1px solid rgba(220,38,38,.4);color:var(--on-dark);font-size:.84rem;line-height:1.4}
.calc-panel.is-error .calc-error{display:flex}
.calc-error button{margin-left:auto;flex:none;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);color:#fff;
  border-radius:999px;padding:6px 14px;font-size:.78rem;font-weight:700;cursor:pointer}
.calc-error button:hover{background:rgba(255,255,255,.2)}

/* info tooltip. The dot is 15px for looks, but a transparent ::before expands
   the tap target to 44x44 (WCAG 2.5.5) without shifting layout. */
.tip{position:relative;display:inline-flex;align-items:center;justify-content:center;width:15px;height:15px;border-radius:50%;
  border:1px solid rgba(255,255,255,.35);color:var(--on-dark-mut);font-size:.62rem;font-weight:800;font-style:italic;font-family:Georgia,serif;
  background:transparent;cursor:help;flex:none;padding:0}
.tip::before{content:"";position:absolute;top:50%;left:50%;width:44px;height:44px;transform:translate(-50%,-50%)}
.tip:hover,.tip:focus-visible,.tip.tip-open{color:var(--on-dark);border-color:var(--bronze-lit)}
.tip::after{content:attr(data-tip);position:absolute;bottom:calc(100% + 9px);left:50%;transform:translateX(-50%) translateY(4px);
  width:220px;max-width:min(220px,70vw);background:#0d0906;color:var(--on-dark);font-size:.78rem;font-weight:500;line-height:1.4;
  border:1px solid var(--dark-line);border-radius:10px;padding:10px 12px;box-shadow:0 20px 40px -14px rgba(0,0,0,.6);
  opacity:0;pointer-events:none;transition:opacity .15s ease,transform .15s ease;z-index:10;text-align:left}
.tip:hover::after,.tip:focus-visible::after,.tip.tip-open::after{opacity:1;transform:translateX(-50%) translateY(0)}

.calc-note{text-align:center;font-size:.78rem;color:var(--on-dark-mut);margin-top:14px;opacity:.85}

/* ============================================================
   STEPS
   ============================================================ */
.steps{padding:88px 0 76px}
.section-head{max-width:640px;margin:0 auto 44px;text-align:center}
.section-head .eyebrow{justify-content:center}
.section-head .lead{margin:12px auto 0;text-align:center}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  background:linear-gradient(135deg,var(--pri-bright),var(--bronze));color:#fff;font-weight:800;font-size:1.02rem;margin-bottom:16px}
.step h3{font-size:1.1rem;font-weight:800;margin-bottom:7px;letter-spacing:-.01em}
.step p{color:var(--muted);font-size:.94rem}

/* ============================================================
   VENTAJAS
   ============================================================ */
.vent{padding:0 0 88px}
.vent-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.vcard{background:var(--paper);border:1px solid var(--border-2);border-radius:var(--radius-sm);padding:22px 18px}
.vcard .vm{width:16px;height:16px;border-radius:50%;margin-bottom:14px;
  background:radial-gradient(circle at center,transparent 0 3px,var(--pri) 3.1px 4.6px,transparent 4.7px 6.3px,var(--bronze) 6.4px 7.6px,transparent 7.7px)}
.vcard h3{font-size:.98rem;font-weight:800;margin-bottom:6px}
.vcard p{font-size:.86rem;color:var(--muted);line-height:1.5}

/* ============================================================
   REQUISITOS band
   ============================================================ */
.req{background:linear-gradient(180deg,var(--paper),#fff 40%,var(--paper));border-top:1px solid var(--border-2);border-bottom:1px solid var(--border-2);padding:72px 0}
.req-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:920px;margin:0 auto}
.req-item{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;padding:20px 14px;background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm)}
.req-item .ri{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--pri-xlight);color:var(--pri);font-size:1.15rem;line-height:1}
.req-item span{font-size:.88rem;font-weight:700;color:var(--ink-2)}

/* ============================================================
   EXTENSION
   ============================================================ */
.ext{padding:88px 0}
.ext-inner{max-width:760px;margin:0 auto;text-align:center}
.ext .eyebrow{justify-content:center}
.ext p{margin-top:14px}
/* Live extension cost for the current simulation (no display here so the
   `hidden` attribute keeps it collapsed until data arrives). */
.ext-live{margin:16px auto 0;max-width:560px;font-weight:700;color:var(--ink);
  background:var(--pri-xlight);border:1px solid var(--pri-light);border-radius:var(--radius-sm);padding:12px 18px;font-size:.95rem}

/* ============================================================
   FAQ
   ============================================================ */
.faq{padding:0 0 92px}
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.faq-item summary{display:flex;align-items:center;gap:16px;padding:18px 20px;font-weight:700;font-size:1rem;color:var(--ink);cursor:pointer}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::marker{content:""}
.faq-q{flex:1}
.faq-ico{position:relative;flex:none;width:20px;height:20px;border-radius:50%;border:1.5px solid var(--border)}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;inset:0;margin:auto;background:var(--pri)}
.faq-ico::before{width:9px;height:1.5px}
.faq-ico::after{width:1.5px;height:9px;transition:opacity .2s ease}
.faq-item[open] .faq-ico::after{opacity:0}
.faq-answer{padding:0 20px 18px;color:var(--muted);font-size:.94rem;line-height:1.6}

/* ============================================================
   FINAL CTA
   ============================================================ */
.final{position:relative;overflow:hidden;background:linear-gradient(125deg,var(--pri-dark) 0%,var(--pri) 42%,var(--bronze-deep) 100%);color:#fff;padding:80px 0;text-align:center}
.final h2{color:#fff;font-size:clamp(1.8rem,4vw,2.6rem)}
.final p{color:rgba(255,255,255,.9);margin:16px auto 28px;max-width:50ch}
.final .btn-primary{background:#fff;color:var(--pri-dark);box-shadow:0 14px 34px -12px rgba(0,0,0,.4)}
.final .btn-primary:hover{color:var(--pri)}
.final .btn-lg{width:auto}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{background:var(--dark);color:var(--on-dark-mut);padding:44px 0 30px;font-size:.86rem;line-height:1.6}
.footer-top{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.footer-brand{display:inline-flex;align-items:center;gap:10px}
.footer-brand b{color:var(--on-dark);font-weight:800}
.footer-nav{display:flex;gap:16px;flex-wrap:wrap}
.footer-nav a{color:var(--on-dark-mut)}
.footer-nav a:hover{color:var(--on-dark)}
.reclamos{display:inline-flex;align-items:center;gap:6px}
.demo-flag{font-size:.72rem;font-style:italic;opacity:.7;color:var(--on-dark-mut)}
.footer-legal{border-top:1px solid var(--dark-line);padding-top:20px;display:flex;flex-direction:column;gap:10px}
.footer-legal p{max-width:none}
.footer-demo-tag{font-size:.72rem;opacity:.7;font-style:italic}
.footer-bottom{margin-top:20px;padding-top:16px;border-top:1px solid var(--dark-line);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:.78rem}
.footer-bottom a{color:var(--bronze-lit)}
.powered{opacity:.7}
.powered a{color:var(--bronze-lit)}

a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--pri-bright);outline-offset:2px;border-radius:6px}

/* ============================================================
   CTA DEMO MODAL
   ============================================================ */
.modal{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;padding:24px}
.modal.open{display:flex}
.modal-backdrop{position:absolute;inset:0;background:rgba(10,7,5,.72);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px)}
.modal-card{position:relative;z-index:1;width:100%;max-width:460px;background:linear-gradient(165deg,var(--dark-2),var(--dark));
  border:1px solid rgba(255,255,255,.14);border-radius:22px;padding:32px 28px;color:var(--on-dark);
  box-shadow:0 40px 90px -30px rgba(0,0,0,.7);text-align:center}
.modal-mark{width:48px;height:48px;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;border-radius:14px;
  background:linear-gradient(150deg,rgba(220,38,38,.22),rgba(228,168,94,.12));border:1px solid rgba(228,168,94,.3)}
.modal-mark svg{width:26px;height:26px}
.modal-card h2{font-size:1.4rem;font-weight:800;letter-spacing:-.02em;margin-bottom:10px}
.modal-card p{color:var(--on-dark-mut);font-size:.94rem;line-height:1.55;margin-bottom:22px}
.modal-actions{display:flex;flex-direction:column;gap:10px}
.modal-actions .btn{width:100%}
.btn-ghost{background:rgba(255,255,255,.06);border:1.5px solid rgba(255,255,255,.2);color:var(--on-dark)}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.modal-close{position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:var(--on-dark);font-size:1.1rem;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center}
.modal-close:hover{background:rgba(255,255,255,.14)}
body.modal-open{overflow:hidden}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:900px){
  .steps-grid{grid-template-columns:1fr}
  .vent-grid{grid-template-columns:repeat(2,1fr)}
  .req-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .nav-toggle{display:inline-flex}
  .site-header{position:sticky} /* anchors the absolute nav dropdown */
  /* nav collapses into a dropdown revealed by the hamburger */
  .nav{position:absolute;top:100%;left:0;right:0;display:none;flex-direction:column;gap:4px;
    padding:12px 16px 16px;background:rgba(23,17,14,.97);backdrop-filter:blur(14px) saturate(140%);
    -webkit-backdrop-filter:blur(14px) saturate(140%);border-bottom:1px solid var(--dark-line)}
  .site-header.nav-open .nav{display:flex}
  .nav a{padding:12px 14px;font-size:1rem}
  .lang button{min-height:44px;min-width:44px}
  .site-header .wrap{height:66px}
  .hero{padding-top:40px}
  .hero-inner{padding-top:24px}
  body{font-size:16px}
  .calc-panel{border-radius:20px;padding:22px 18px}
  .footer-top{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto !important}
  .btn,.d-value,.details-toggle .car,.faq-ico::after{transition:none !important}
}