/* ===== RESET & BASE ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:#0d0d0d;background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}

/* ===== UTILITIES ===== */
.container{max-width:1140px;margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section--dark{background:#0a0a0a;color:#f5f5f5}
.section--light{background:#f8f8f8}
.tag{display:inline-block;font-size:.75rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:6px 14px;border-radius:100px;margin-bottom:20px}
.tag--blue{background:rgba(13,85,255,.08);color:#0D55FF}
.tag--white{background:rgba(255,255,255,.1);color:rgba(255,255,255,.7)}
.tag--dark{background:rgba(0,0,0,.06);color:#555}

/* ===== TYPOGRAPHY ===== */
h1,h2,h3,h4,h5{font-weight:700;line-height:1.15;letter-spacing:-.02em}
h1{font-size:clamp(2.5rem,5.5vw,4rem)}
h2{font-size:clamp(2rem,4vw,3rem)}
h3{font-size:clamp(1.3rem,2.5vw,1.6rem)}
h4{font-size:1.05rem}
.text-muted{color:#666}
.text-muted-light{color:rgba(255,255,255,.5)}
.text-center{text-align:center}
.highlight{color:#0D55FF}
.section--dark .highlight{color:#5B93FF}
.section__sub{font-size:1.05rem;color:#666;margin-top:12px;max-width:560px;margin-left:auto;margin-right:auto;line-height:1.7}

/* ===== BUTTONS ===== */
.btn{display:inline-flex;align-items:center;gap:8px;font-size:.95rem;font-weight:600;padding:14px 32px;border-radius:10px;border:none;cursor:pointer;transition:all .25s ease}
.btn--primary{background:#0D55FF;color:#fff}
.btn--primary:hover{background:#0a47d6;transform:translateY(-1px);box-shadow:0 8px 30px rgba(13,85,255,.25)}
.btn--outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.25)}
.btn--outline:hover{border-color:#5B93FF;color:#5B93FF}
.btn--outline-dark{background:transparent;color:#0d0d0d;border:1.5px solid #ddd}
.btn--outline-dark:hover{border-color:#0D55FF;color:#0D55FF}
.btn--sm{font-size:.85rem;padding:10px 22px;border-radius:8px}
.btn svg{width:18px;height:18px}

/* ===== NAV ===== */
.nav{position:fixed;top:0;left:0;width:100%;z-index:100;padding:16px 0;transition:all .3s}
.nav--scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:0 1px 0 rgba(0,0,0,.06);padding:10px 0}
.nav__inner{display:flex;align-items:center;justify-content:space-between}
.nav__logo{font-size:1.5rem;font-weight:800;letter-spacing:-.03em;color:#f5f5f5}
.nav--scrolled .nav__logo{color:#0d0d0d}
.nav__logo span{color:#0D55FF}
.nav__links{display:flex;gap:32px}
.nav__links a{font-size:.88rem;font-weight:500;color:rgba(255,255,255,.7);transition:color .2s}
.nav--scrolled .nav__links a{color:#555}
.nav__links a:hover{color:#0D55FF}
.nav__cta{display:inline-flex}
.nav__hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav__hamburger span{width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s}
.nav--scrolled .nav__hamburger span{background:#0d0d0d}

/* ===== HERO ===== */
.hero{min-height:90vh;display:flex;align-items:center;padding-top:80px}
.hero__content .tag{margin-bottom:16px}
.hero__body{font-size:1.05rem;color:rgba(255,255,255,.6);line-height:1.7;margin-top:16px;max-width:600px;margin-left:auto;margin-right:auto}
.hero__actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap}

/* ===== CALCULATOR ===== */
.calc__layout{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;margin-top:48px;align-items:start}

.calc__inputs{background:#fff;border:1px solid #eee;border-radius:16px;padding:36px 32px}
.calc__inputs h3{font-size:1.2rem;margin-bottom:28px;color:#0d0d0d}

.calc__field{margin-bottom:24px}
.calc__field:last-child{margin-bottom:0}
.calc__field label{display:block;font-size:.88rem;font-weight:600;color:#333;margin-bottom:10px}
.calc__field label strong{color:#0D55FF;font-weight:700}

/* Number inputs */
.calc__field input[type="number"]{
  width:100%;
  padding:14px 16px;
  font-size:1rem;
  font-family:'Inter',sans-serif;
  font-weight:600;
  color:#0d0d0d;
  border:1.5px solid #e0e0e0;
  border-radius:10px;
  background:#fafafa;
  transition:border-color .2s,box-shadow .2s;
  -moz-appearance:textfield;
  appearance:textfield
}
.calc__field input[type="number"]::-webkit-inner-spin-button,
.calc__field input[type="number"]::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.calc__field input[type="number"]:focus{
  outline:none;
  border-color:#0D55FF;
  box-shadow:0 0 0 3px rgba(13,85,255,.1);
  background:#fff
}

/* Range sliders */
.calc__field input[type="range"]{
  -webkit-appearance:none;
  appearance:none;
  width:100%;
  height:6px;
  border-radius:3px;
  background:linear-gradient(to right,#0D55FF 0%,#0D55FF var(--fill,0%),#e0e0e0 var(--fill,0%),#e0e0e0 100%);
  outline:none;
  cursor:pointer
}
.calc__field input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none;
  width:20px;
  height:20px;
  border-radius:50%;
  background:#0D55FF;
  border:3px solid #fff;
  box-shadow:0 2px 8px rgba(13,85,255,.3);
  cursor:pointer;
  transition:transform .15s,box-shadow .15s
}
.calc__field input[type="range"]::-webkit-slider-thumb:hover{
  transform:scale(1.15);
  box-shadow:0 3px 12px rgba(13,85,255,.4)
}
.calc__field input[type="range"]::-moz-range-thumb{
  width:20px;
  height:20px;
  border-radius:50%;
  background:#0D55FF;
  border:3px solid #fff;
  box-shadow:0 2px 8px rgba(13,85,255,.3);
  cursor:pointer
}
.calc__field input[type="range"]::-moz-range-track{
  height:6px;
  border-radius:3px;
  background:#e0e0e0
}
.calc__field input[type="range"]::-moz-range-progress{
  height:6px;
  border-radius:3px;
  background:#0D55FF
}

.calc__range-labels{display:flex;justify-content:space-between;font-size:.75rem;color:#999;margin-top:6px}

/* Results */
.calc__results{position:sticky;top:100px}
.calc__results h3{font-size:1.2rem;margin-bottom:28px;color:#0d0d0d}

.calc__result-card{background:#0a0a0a;border-radius:16px;padding:36px 32px}

.calc__result-item{display:flex;justify-content:space-between;align-items:center;padding:14px 0}
.calc__result-item + .calc__result-item{border-top:1px solid rgba(255,255,255,.06)}

.calc__result-label{font-size:.88rem;color:rgba(255,255,255,.5);font-weight:500}
.calc__result-value{font-size:1.3rem;font-weight:800;color:#f5f5f5;font-variant-numeric:tabular-nums}
.calc__result-value--green{color:#5B93FF}
.calc__result-value--blue{color:#5B93FF}
.calc__result-value--large{font-size:2rem}

.calc__result-divider{height:2px;background:rgba(91,147,255,.2);margin:8px 0}

.calc__result-item--total{padding:18px 0 10px}
.calc__result-item--total .calc__result-label{font-size:.95rem;font-weight:600;color:rgba(255,255,255,.7)}

.calc__note{font-size:.78rem;color:#999;margin-top:16px;line-height:1.6}

/* ===== METHODOLOGY ===== */
.methodology__layout{display:grid;grid-template-columns:1fr 1.3fr;gap:60px;align-items:start}
.methodology__body{color:rgba(255,255,255,.6);margin-top:16px;font-size:1rem;line-height:1.7}

.methodology__card{display:flex;flex-direction:column;gap:32px}

.methodology__step{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:28px 24px;transition:border-color .3s}
.methodology__step:hover{border-color:rgba(91,147,255,.3)}

.methodology__num{font-size:1.4rem;font-weight:800;color:rgba(91,147,255,.2);margin-bottom:8px}
.methodology__step h3{color:#f5f5f5;font-size:1.1rem;margin-bottom:8px}
.methodology__step > p{font-size:.95rem;color:#5B93FF;font-weight:600;font-family:'Inter',monospace;background:rgba(91,147,255,.06);padding:10px 14px;border-radius:8px;margin-bottom:10px;line-height:1.5}
.methodology__detail{font-size:.85rem;color:rgba(255,255,255,.45);line-height:1.7}

/* ===== BENCHMARKS ===== */
.benchmarks__grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;margin-top:48px}

.benchmark__card{background:#fff;border:1px solid #eee;border-radius:14px;padding:28px 22px;text-align:center;transition:all .3s}
.benchmark__card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.06);border-color:rgba(13,85,255,.15)}

.benchmark__industry{font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:#333;margin-bottom:16px}

.benchmark__bar{width:100%;height:6px;background:#eee;border-radius:3px;overflow:hidden;margin-bottom:12px}
.benchmark__fill{height:100%;background:#0D55FF;border-radius:3px;width:0;transition:width 1.2s cubic-bezier(.22,1,.36,1)}

.benchmark__rate{font-size:2rem;font-weight:800;color:#0D55FF;margin-bottom:12px}

.benchmark__card p{font-size:.8rem;color:#888;line-height:1.6}

/* ===== CASE STUDIES ===== */
.case__card-logo{max-height:40px;width:auto;object-fit:contain;margin-bottom:14px;display:block}
.cases__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}

.case__card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:32px;transition:all .3s}
.case__card:hover{border-color:rgba(91,147,255,.3);transform:translateY(-4px)}

.case__tag{display:inline-block;font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:12px}

.case__card h3{font-size:1.15rem;color:#f5f5f5;margin-bottom:8px}
.case__card p{font-size:.88rem;color:rgba(255,255,255,.5);line-height:1.6;margin-bottom:20px}

.case__stats{display:flex;gap:28px;margin-bottom:16px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08)}
.case__stat{display:flex;flex-direction:column;gap:2px}
.case__stat strong{font-size:1.4rem;font-weight:800;color:#5B93FF}
.case__stat span{font-size:.72rem;color:rgba(255,255,255,.4);text-transform:uppercase;letter-spacing:.04em}

.case__link{font-size:.88rem;font-weight:600;color:#5B93FF;transition:opacity .2s}
.case__link:hover{opacity:.7}

/* ===== BOTTOM CTA ===== */
.cta__actions{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}
.cta-bottom .section__sub{max-width:600px}

/* ===== FOOTER ===== */
.footer{background:#0a0a0a;color:#f5f5f5;padding:64px 0 32px}
.footer__inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer__brand .nav__logo{color:#f5f5f5}
.footer__brand p{color:rgba(255,255,255,.4);font-size:.9rem;margin-top:12px;max-width:280px;line-height:1.7}
.footer__col h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.3);margin-bottom:20px}
.footer__col a{display:block;font-size:.9rem;color:rgba(255,255,255,.6);margin-bottom:12px;transition:color .2s}
.footer__col a:hover{color:#5B93FF}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:24px;display:flex;justify-content:space-between;align-items:center}
.footer__bottom p{font-size:.8rem;color:rgba(255,255,255,.3)}
.footer__bottom a{font-size:.8rem;color:rgba(255,255,255,.4);margin-left:24px}
.footer__bottom a:hover{color:#5B93FF}

/* ===== ANIMATIONS ===== */
.fade-up{opacity:0;transform:translateY(24px);transition:opacity .5s ease,transform .5s ease}
.fade-up.visible{opacity:1;transform:translateY(0)}
.benchmark__card.fade-up:nth-child(2){transition-delay:.06s}
.benchmark__card.fade-up:nth-child(3){transition-delay:.12s}
.benchmark__card.fade-up:nth-child(4){transition-delay:.18s}
.benchmark__card.fade-up:nth-child(5){transition-delay:.24s}
.case__card.fade-up:nth-child(2){transition-delay:.08s}
.case__card.fade-up:nth-child(3){transition-delay:.16s}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .calc__layout{grid-template-columns:1fr}
  .calc__results{position:static}
  .methodology__layout{grid-template-columns:1fr}
  .benchmarks__grid{grid-template-columns:repeat(3,1fr)}
  .cases__grid{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:72px 0}
  .nav__links,.nav__cta{display:none}
  .nav__hamburger{display:flex}
  .nav__links.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;width:100%;background:#fff;padding:24px;gap:16px;box-shadow:0 8px 30px rgba(0,0,0,.08)}
  .nav__links.open a{color:#555}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero__actions{flex-direction:column;align-items:center}
  .calc__layout{grid-template-columns:1fr;gap:32px}
  .calc__inputs{padding:28px 22px}
  .calc__result-card{padding:28px 22px}
  .calc__result-value--large{font-size:1.6rem}
  .methodology__layout{grid-template-columns:1fr;gap:32px}
  .benchmarks__grid{grid-template-columns:1fr}
  .cases__grid{grid-template-columns:1fr}
  .cta__actions{flex-direction:column;align-items:center}
  .footer__inner{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:16px;text-align:center}
}