/* ===== 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(2.2rem,5vw,3.5rem)}
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;font-family:'Inter',system-ui,-apple-system,sans-serif}
.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--sm{font-size:.85rem;padding:10px 22px;border-radius:8px}
.btn--full{width:100%;justify-content:center}
.btn--lg{padding:16px 32px;font-size:1rem}
.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}

/* ===== HERO ===== */
.hero{padding-top:140px;padding-bottom:80px}
.hero__grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}

.hero__content h1{margin-bottom:20px}
.hero__body{font-size:1.1rem;color:#555;line-height:1.7;margin-bottom:28px;max-width:500px}

.hero__checks{display:flex;flex-direction:column;gap:14px;margin-bottom:32px}
.hero__checks li{display:flex;align-items:center;gap:12px;font-size:.95rem;font-weight:500;color:#333}
.hero__checks svg{flex-shrink:0}

.hero__proof{font-size:.88rem;color:#888;font-weight:500}

/* ===== AUDIT FORM ===== */
.hero__form-wrap{background:#fff;border:1px solid #eee;border-radius:16px;padding:36px;box-shadow:0 8px 40px rgba(0,0,0,.08)}

.audit-form{display:flex;flex-direction:column;gap:18px}
.audit-form__title{text-align:center;margin-bottom:4px;font-size:1.25rem}

.form__group{display:flex;flex-direction:column;gap:5px}
.form__group label{font-size:.85rem;font-weight:600;color:#0d0d0d}
.form__group .req{color:#0D55FF}
.form__group .optional{font-weight:400;color:#999;font-size:.8rem}

.form__group input,
.form__group select,
.form__group textarea{width:100%;background:#fff;border:1px solid #e0e0e0;border-radius:12px;padding:14px;font-size:.92rem;font-family:'Inter',system-ui,-apple-system,sans-serif;color:#0d0d0d;transition:border-color .2s,box-shadow .2s;outline:none;-webkit-appearance:none;appearance:none}
.form__group input::placeholder{color:#aaa}
.form__group input:focus,
.form__group select:focus,
.form__group textarea:focus{border-color:#0D55FF;box-shadow:0 0 0 3px rgba(13,85,255,.1)}

.form__group select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:40px}

.form__note{font-size:.8rem;color:#888;text-align:center;margin-top:4px}

/* Form success state */
.audit-form__success{text-align:center;padding:48px 24px}
.audit-form__success .success-icon{margin-bottom:20px}
.audit-form__success h3{font-size:1.5rem;margin-bottom:12px;color:#0d0d0d}
.audit-form__success p{font-size:1rem;color:#666;line-height:1.7;max-width:360px;margin:0 auto}

/* ===== CARDS GRID ===== */
.cards-grid{display:grid;gap:24px;margin-top:48px}
.cards-grid--4{grid-template-columns:repeat(4,1fr)}
.cards-grid--3{grid-template-columns:repeat(3,1fr)}

.card{background:#fff;border:1px solid #eee;border-radius:14px;padding:32px 24px;transition:box-shadow .3s}
.card:hover{box-shadow:0 8px 30px rgba(0,0,0,.06)}
.card__icon{width:52px;height:52px;border-radius:12px;background:rgba(13,85,255,.06);display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.card h4{margin-bottom:8px}
.card p{font-size:.9rem;color:#666;line-height:1.6}

/* ===== STEPS ===== */
.steps{display:flex;align-items:flex-start;justify-content:center;gap:0;margin-top:48px}
.step{text-align:center;flex:1;max-width:280px;padding:0 20px}
.step__num{width:48px;height:48px;border-radius:50%;background:#0D55FF;color:#fff;font-size:1.1rem;font-weight:700;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.step h4{margin-bottom:8px}
.step p{font-size:.9rem;color:#666;line-height:1.6}
.step__line{width:60px;height:2px;background:#e0e0e0;margin-top:24px;flex-shrink:0}

/* ===== CASE STUDY CARDS ===== */
.case-card{background:#fff;border:1px solid #eee;border-radius:14px;padding:32px 28px;transition:box-shadow .3s}
.case-card:hover{box-shadow:0 8px 30px rgba(0,0,0,.06)}
.case-card h4{font-size:1.1rem;margin-bottom:8px}
.case-card__metric{font-size:1.3rem;font-weight:700;color:#0D55FF;margin-bottom:8px}
.case-card__desc{font-size:.9rem;color:#666;line-height:1.6}

/* ===== FAQ ===== */
.faq__list{max-width:720px;margin:48px auto 0;display:flex;flex-direction:column;gap:12px}
.faq__item{border:1px solid #eee;border-radius:12px;overflow:hidden;transition:border-color .3s;background:#fff}
.faq__item.open{border-color:rgba(13,85,255,.2)}
.faq__q{width:100%;text-align:left;background:none;border:none;padding:20px 24px;font-size:1rem;font-weight:600;color:#0d0d0d;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;font-family:'Inter',system-ui,-apple-system,sans-serif}
.faq__icon{font-size:1.3rem;color:#0D55FF;transition:transform .3s;flex-shrink:0}
.faq__item.open .faq__icon{transform:rotate(45deg)}
.faq__a{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq__item.open .faq__a{max-height:400px}
.faq__a p{padding:0 24px 20px;font-size:.92rem;color:#666;line-height:1.7}

/* ===== BOTTOM CTA ===== */
.cta-bottom .section__sub{margin-bottom:32px}

/* ===== 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)}
.hero__form-wrap.fade-up{transition-delay:.15s}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .hero__grid{grid-template-columns:1fr;gap:48px}
  .cards-grid--4{grid-template-columns:repeat(2,1fr)}
  .footer__inner{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:72px 0}
  .hero{padding-top:110px;padding-bottom:60px}
  .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__grid{grid-template-columns:1fr;gap:36px}
  .hero__form-wrap{padding:24px}
  .cards-grid--4,.cards-grid--3{grid-template-columns:1fr}
  .steps{flex-direction:column;align-items:center;gap:24px}
  .step__line{width:2px;height:32px;margin:0}
  .footer__inner{grid-template-columns:1fr}
  .footer__bottom{flex-direction:column;gap:16px;text-align:center}
}