/* ===== 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:#0d0d0d}
.nav__logo span{color:#0D55FF}
.nav__links{display:flex;gap:32px}
.nav__links a{font-size:.88rem;font-weight:500;color:#555;transition:color .2s}
.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:#0d0d0d;border-radius:2px;transition:all .3s}
.nav__hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav__hamburger.open span:nth-child(2){opacity:0}
.nav__hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== HERO ===== */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:80px;background:#fff}
.hero__layout{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.hero__content .tag{margin-bottom:16px}
.hero__body{font-size:1.05rem;color:#666;line-height:1.7;margin-top:16px;max-width:480px}
.hero__actions{display:flex;gap:16px;margin-top:32px;flex-wrap:wrap}

/* Hero Dashboard Card */
.hero__dashboard{display:flex;flex-direction:column;align-items:center}
.hero__dash-card{background:#fff;border:1px solid #eee;border-radius:16px;padding:28px;width:100%;max-width:440px;box-shadow:0 8px 40px rgba(0,0,0,.06)}
.hero__dash-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.hero__dash-title{font-size:.85rem;font-weight:600;color:#0d0d0d}
.hero__dash-live{font-size:.7rem;font-weight:600;padding:3px 10px;border-radius:100px;background:rgba(16,185,129,.1);color:#10b981}
.hero__dash-stats{display:flex;gap:32px;margin-bottom:20px}
.hero__dash-stat{display:flex;flex-direction:column}
.hero__dash-num{font-size:2.2rem;font-weight:800;color:#0d0d0d;line-height:1}
.hero__dash-label{font-size:.75rem;color:#888;margin-top:4px;text-transform:uppercase;letter-spacing:.04em}

/* Hero ROAS section */
.hero__roas{margin-bottom:20px;padding:16px 0;border-top:1px solid #f0f0f0}
.hero__roas-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.hero__roas-label{font-size:.75rem;font-weight:600;color:#888;text-transform:uppercase;letter-spacing:.04em}
.hero__roas-badge{font-size:.65rem;font-weight:700;padding:2px 8px;border-radius:100px;background:rgba(16,185,129,.1);color:#10b981}
.hero__roas-big{display:flex;align-items:baseline;gap:2px}
.hero__roas-num{font-size:2.8rem;font-weight:800;color:#0D55FF;line-height:1}
.hero__roas-x{font-size:1.4rem;font-weight:700;color:#0D55FF}
.hero__roas-bar-track{height:6px;background:#f0f0f0;border-radius:6px;overflow:hidden;margin-top:10px}
.hero__roas-bar-fill{height:100%;background:#0D55FF;border-radius:6px;width:0;transition:width 1.4s cubic-bezier(.4,0,.2,1)}

/* Hero channel bars */
.hero__channels{display:flex;flex-direction:column;gap:8px}
.hero__channel{display:flex;align-items:center;gap:12px}
.hero__channel-name{font-size:.7rem;font-weight:600;color:#888;width:52px;text-align:right;flex-shrink:0}
.hero__channel-bar{flex:1;height:5px;background:#f0f0f0;border-radius:5px;overflow:hidden}
.hero__channel-fill{height:100%;background:#0D55FF;border-radius:5px;width:0;transition:width 1.2s cubic-bezier(.4,0,.2,1)}

/* ===== PARTNERS ===== */
.partners__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px;max-width:800px;margin-left:auto;margin-right:auto}
.partner__card{background:#fff;border:1px solid #eee;border-radius:14px;padding:36px 28px;transition:all .3s}
.partner__card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.06);border-color:rgba(13,85,255,.15)}
.partner__icon{width:52px;height:52px;border-radius:12px;background:rgba(13,85,255,.06);color:#0D55FF;display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.partner__card h3{margin-bottom:10px;font-size:1.15rem}
.partner__card p{font-size:.9rem;color:#666;line-height:1.7}

/* ===== WHY PERFORMANCE MARKETING ===== */
.why__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}
.why__card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:28px;transition:border-color .3s}
.why__card:hover{border-color:rgba(91,147,255,.3)}
.why__card-icon{width:44px;height:44px;border-radius:10px;background:rgba(91,147,255,.12);color:#5B93FF;display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.why__card h4{color:#f5f5f5;margin-bottom:8px}
.why__card p{font-size:.88rem;color:rgba(255,255,255,.45);line-height:1.7}

/* ===== AUDIT ===== */
.audit__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.audit__card{background:#fff;border:1px solid #eee;border-radius:14px;padding:28px 24px;transition:all .3s}
.audit__card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,0,0,.05);border-color:rgba(13,85,255,.15)}
.audit__num{font-size:1.6rem;font-weight:800;color:rgba(13,85,255,.15);margin-bottom:8px}
.audit__card h4{margin-bottom:8px;font-size:1rem}
.audit__card p{font-size:.85rem;color:#666;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:#fff;border:1px solid #eee;border-radius:14px;padding:32px 26px;transition:all .3s}
.case__card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.06);border-color:rgba(13,85,255,.15)}
.case__industry{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;color:#0D55FF;margin-bottom:20px;padding:5px 12px;background:rgba(13,85,255,.06);border-radius:100px;display:inline-block}
.case__metrics{display:flex;gap:24px;margin-bottom:20px}
.case__metric{display:flex;flex-direction:column}
.case__metric-num{font-size:1.8rem;font-weight:800;color:#0D55FF;line-height:1}
.case__metric-label{font-size:.72rem;color:#888;margin-top:4px;text-transform:uppercase;letter-spacing:.04em}
.case__quote{font-size:.88rem;color:#555;line-height:1.7;font-style:italic;margin-bottom:14px;padding-left:16px;border-left:2px solid rgba(13,85,255,.2)}
.case__source{font-size:.78rem;color:#999;font-weight:500}

/* ===== INDUSTRIES ===== */
.industries__tags{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:48px;max-width:700px;margin-left:auto;margin-right:auto}
.industry__tag{font-size:.88rem;font-weight:500;padding:10px 24px;border-radius:100px;background:#fff;color:#555;border:1px solid #eee;transition:all .25s}
.industry__tag:hover{border-color:#0D55FF;color:#0D55FF;background:rgba(13,85,255,.04)}

/* ===== AI ADVANTAGE ===== */
.ai__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;margin-top:48px}
.ai__card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:36px 28px;transition:border-color .3s}
.ai__card:hover{border-color:rgba(91,147,255,.3)}
.ai__card-icon{width:48px;height:48px;border-radius:12px;background:rgba(91,147,255,.12);color:#5B93FF;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.ai__card h3{color:#f5f5f5;margin-bottom:10px;font-size:1.15rem}
.ai__card p{font-size:.9rem;color:rgba(255,255,255,.45);line-height:1.7}

.ai__stat{text-align:center;margin-top:56px;padding-top:48px;border-top:1px solid rgba(255,255,255,.08)}
.ai__stat-num{font-size:4rem;font-weight:900;color:#5B93FF;line-height:1;display:inline}
.ai__stat-suffix{font-size:2.5rem;font-weight:800;color:#5B93FF;display:inline}
.ai__stat p{font-size:1rem;color:rgba(255,255,255,.45);margin-top:8px}

/* ===== BOTTOM CTA ===== */
.cta-bottom{border-top:1px solid rgba(255,255,255,.05)}
.cta__grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:64px}
.cta__card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:40px 32px}
.cta__card h3{color:#f5f5f5;margin-bottom:12px}
.cta__card p{font-size:.92rem;color:rgba(255,255,255,.45);line-height:1.7;margin-bottom:24px}
.cta__big h2{font-size:clamp(3rem,8vw,6rem);font-weight:900;color:#f5f5f5;letter-spacing:-.04em;opacity:.15}

/* ===== 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)}

/* Stagger partner cards */
.partner__card.fade-up:nth-child(2){transition-delay:.1s}

/* Stagger why cards */
.why__card.fade-up:nth-child(2){transition-delay:.08s}
.why__card.fade-up:nth-child(3){transition-delay:.16s}
.why__card.fade-up:nth-child(4){transition-delay:.24s}

/* Stagger audit cards */
.audit__card.fade-up:nth-child(2){transition-delay:.06s}
.audit__card.fade-up:nth-child(3){transition-delay:.12s}
.audit__card.fade-up:nth-child(4){transition-delay:.18s}
.audit__card.fade-up:nth-child(5){transition-delay:.24s}
.audit__card.fade-up:nth-child(6){transition-delay:.3s}

/* Stagger case cards */
.case__card.fade-up:nth-child(2){transition-delay:.1s}
.case__card.fade-up:nth-child(3){transition-delay:.2s}

/* Stagger AI cards */
.ai__card.fade-up:nth-child(2){transition-delay:.12s}

/* Stagger industry tags */
.industry__tag.fade-up:nth-child(2){transition-delay:.04s}
.industry__tag.fade-up:nth-child(3){transition-delay:.08s}
.industry__tag.fade-up:nth-child(4){transition-delay:.12s}
.industry__tag.fade-up:nth-child(5){transition-delay:.16s}
.industry__tag.fade-up:nth-child(6){transition-delay:.2s}
.industry__tag.fade-up:nth-child(7){transition-delay:.24s}
.industry__tag.fade-up:nth-child(8){transition-delay:.28s}

/* Stagger CTA cards */
.cta__card.fade-up:nth-child(2){transition-delay:.12s}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero__layout{grid-template-columns:1fr;text-align:center}
  .hero__body{margin-left:auto;margin-right:auto}
  .hero__actions{justify-content:center}
  .hero__dashboard{margin-top:40px}
  .partners__grid{grid-template-columns:1fr;max-width:500px}
  .why__grid{grid-template-columns:1fr}
  .audit__grid{grid-template-columns:repeat(2,1fr)}
  .cases__grid{grid-template-columns:1fr}
  .ai__grid{grid-template-columns:1fr}
  .cta__grid{grid-template-columns: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)}
  .hero{min-height:auto;padding:120px 0 60px}
  .hero__layout{gap:32px}
  .hero__actions{flex-direction:column;align-items:center}
  .partners__grid{grid-template-columns:1fr}
  .why__grid{grid-template-columns:1fr}
  .audit__grid{grid-template-columns:1fr}
  .cases__grid{grid-template-columns:1fr}
  .ai__grid{grid-template-columns:1fr}
  .cta__grid{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:16px;text-align:center}
  .industries__tags{gap:8px}
  .industry__tag{font-size:.8rem;padding:8px 18px}
  .ai__stat-num{font-size:3rem}
  .ai__stat-suffix{font-size:2rem}
}