:root {
  --green: #059669;
  --green-dark: #047857;
  --green-light: #ecfdf5;
  --green-mid: #6ee7b7;
  --dark: #111827;
  --dark-mid: #1f2937;
  --text: #374151;
  --muted: #6b7280;
  --light: #f0f9ff;
  --border: #bae6fd;
  --white: #ffffff;
  --serif: 'DM Serif Display', Georgia, serif;
  --sans: 'DM Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--sans); color: var(--text); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.container--narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* NAVBAR */
.nav { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,0.95); backdrop-filter: blur(8px); border-bottom: 1px solid #f3f4f6; padding: 0 24px; }
.nav__inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 60px; }
.nav__logo { font-family: var(--serif); font-size: 20px; color: var(--dark); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.nav__logo img { height: 22px; width: auto; }
.nav__links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav__links a { font-size: 14px; font-weight: 500; color: var(--muted); text-decoration: none; transition: color .15s; }
.nav__links a:hover { color: var(--dark); }
.nav__links a.active { color: var(--dark); }
.nav__cta { background: var(--green) !important; color: white !important; padding: 8px 18px; border-radius: 7px; font-weight: 600 !important; font-size: 13.5px !important; transition: background .15s !important; }
.nav__cta:hover { background: var(--green-dark) !important; }

/* BUTTONS */
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: var(--green); color: white; padding: 14px 26px; border-radius: 8px; font-size: 15px; font-weight: 600; text-decoration: none; transition: background .15s, transform .1s; }
.btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.btn-primary .arrow { font-size: 18px; transition: transform .15s; }
.btn-primary:hover .arrow { transform: translateX(3px); }
.btn-ghost { display: inline-flex; align-items: center; gap: 6px; color: var(--dark); font-size: 14.5px; font-weight: 500; text-decoration: none; border-bottom: 1px solid #d1d5db; padding-bottom: 2px; transition: border-color .15s, color .15s; }
.btn-ghost:hover { color: var(--green); border-color: var(--green); }
.btn-groot { display: inline-flex; align-items: center; gap: 10px; background: var(--green); color: white; padding: 16px 32px; border-radius: 8px; font-size: 16px; font-weight: 600; text-decoration: none; transition: background .15s, transform .1s; }
.btn-groot:hover { background: var(--green-dark); transform: translateY(-1px); }
.btn-wit { display: inline-flex; align-items: center; gap: 8px; background: transparent; color: white; padding: 16px 24px; border-radius: 8px; font-size: 15px; font-weight: 500; text-decoration: none; border: 1px solid #374151; transition: border-color .15s; }
.btn-wit:hover { border-color: #6b7280; }

/* SECTION LABEL */
.sectie-label { font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--green); margin-bottom: 20px; }

/* HERO */
.hero { padding: 100px 0 80px; position: relative; overflow: hidden; }
.hero::before { content: ''; position: absolute; top: -120px; right: -200px; width: 600px; height: 600px; background: radial-gradient(circle, #d1fae5 0%, transparent 70%); pointer-events: none; }
.hero__kicker { display: inline-flex; align-items: center; gap: 8px; background: var(--green-light); border: 1px solid var(--green-mid); color: var(--green-dark); font-size: 12.5px; font-weight: 600; padding: 5px 12px; border-radius: 20px; margin-bottom: 28px; letter-spacing: .03em; }
.hero__kicker::before { content: ''; width: 6px; height: 6px; background: var(--green); border-radius: 50%; }
.hero__title { font-family: var(--serif); font-size: clamp(38px, 5.5vw, 64px); line-height: 1.1; color: var(--dark); max-width: 780px; margin-bottom: 24px; letter-spacing: -0.01em; }
.hero__title em { font-style: italic; color: var(--green); }
.hero__sub { font-size: 18px; color: var(--muted); max-width: 580px; line-height: 1.65; margin-bottom: 40px; font-weight: 400; }
.hero__actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 60px; }
.hero__proof { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.proof-item { display: flex; align-items: center; gap: 7px; font-size: 13px; color: var(--muted); }
.proof-item::before { content: '✓'; color: var(--green); font-weight: 700; font-size: 12px; }
.proof-divider { width: 1px; height: 14px; background: #e5e7eb; }

/* PROBLEM SECTION */
.sectie-probleem { background: var(--dark); padding: 100px 0; }
.sectie-probleem .sectie-label { color: var(--green-mid); }
.probleem__titel { font-family: var(--serif); font-size: clamp(28px, 3.5vw, 44px); color: var(--white); line-height: 1.2; max-width: 680px; margin-bottom: 24px; }
.probleem__intro { font-size: 17px; color: #9ca3af; max-width: 640px; line-height: 1.7; margin-bottom: 60px; }
.probleem__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; border: 1px solid #1f2937; border-radius: 12px 12px 0 0; overflow: hidden; }
.probleem__grid--bottom { display: grid; grid-template-columns: repeat(2, 1fr); gap: 2px; border: 1px solid #1f2937; border-radius: 0 0 12px 12px; overflow: hidden; border-top: 2px solid #1f2937; }
.probleem__kaart { padding: 32px 28px; background: #0f172a; }
.probleem__rol { font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--green-mid); margin-bottom: 12px; opacity: .7; }
.probleem__kop { font-size: 15px; font-weight: 600; color: var(--white); margin-bottom: 10px; line-height: 1.3; }
.probleem__tekst { font-size: 13.5px; color: #6b7280; line-height: 1.6; }
.probleem__citaat { margin-top: 40px; padding: 32px; background: #0a1020; border: 1px solid #1f2937; border-radius: 12px; border-left: 3px solid var(--green); }
.probleem__citaat p { font-family: var(--serif); font-size: 20px; color: #e2e8f0; line-height: 1.55; font-style: italic; }
.probleem__citaat cite { display: block; font-family: var(--sans); font-style: normal; font-size: 12px; color: #4b5563; margin-top: 12px; }

/* SOLUTION / COMPARISON */
.sectie-oplossing { padding: 100px 0; background: var(--white); }
.oplossing__header { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; margin-bottom: 64px; }
.oplossing__titel { font-family: var(--serif); font-size: clamp(28px, 3.5vw, 44px); color: var(--dark); line-height: 1.2; }
.oplossing__tekst { font-size: 16px; color: var(--muted); line-height: 1.7; }
.voor-na { margin-top: 20px; border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; }
.voor-na__header { display: grid; grid-template-columns: 1fr 1fr; }
.voor-na__col-header { padding: 14px 20px; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.voor-na__col-header--voor { background: #fef2f2; color: #991b1b; border-bottom: 1px solid #fecaca; }
.voor-na__col-header--na { background: var(--green-light); color: var(--green-dark); border-bottom: 1px solid var(--green-mid); }
.voor-na__rij { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid #f3f4f6; }
.voor-na__cel { padding: 14px 20px; font-size: 13px; line-height: 1.5; }
.voor-na__cel--voor { color: var(--muted); background: #fffbfb; }
.voor-na__cel--na { color: var(--text); background: #f0fdf8; font-weight: 500; }

/* 4D METHOD */
.methode__lagen { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid #e5e7eb; border-radius: 12px; overflow: hidden; margin-top: 48px; }
.laag { padding: 32px 24px; border-right: 1px solid #e5e7eb; transition: background .2s; }
.laag:last-child { border-right: none; }
.laag:hover { background: var(--light); }
.laag__letter { font-family: var(--serif); font-size: 48px; color: #f3f4f6; line-height: 1; margin-bottom: 16px; font-style: italic; transition: color .2s; }
.laag:hover .laag__letter { color: var(--green-light); }
.laag__naam { font-size: 18px; font-weight: 600; color: var(--dark); margin-bottom: 8px; }
.laag__vraag { font-size: 13px; color: var(--green); font-weight: 500; margin-bottom: 10px; }
.laag__tekst { font-size: 13.5px; color: var(--muted); line-height: 1.6; }
.laag__badge { display: inline-block; margin-top: 14px; font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 4px; background: var(--green-light); color: var(--green-dark); }

/* OUTPUT CARDS */
.methode__output { margin-top: 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.output-kaart { padding: 24px; border: 1px solid #e5e7eb; border-radius: 10px; display: flex; align-items: flex-start; gap: 14px; transition: border-color .15s, box-shadow .15s; }
.output-kaart:hover { border-color: var(--green-mid); box-shadow: 0 4px 16px rgba(5,150,105,.08); }
.output-icon { width: 36px; height: 36px; background: var(--green-light); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; flex-shrink: 0; }
.output-kaart h4 { font-size: 14px; font-weight: 600; color: var(--dark); margin-bottom: 4px; }
.output-kaart p { font-size: 12.5px; color: var(--muted); line-height: 1.5; }
.output-kaart .tijd { font-size: 11px; color: var(--green); font-weight: 600; margin-top: 6px; }

/* PROOF BAR */
.sectie-bewijs { padding: 80px 0; background: var(--light); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.bewijs__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.bewijs__item { padding: 32px 20px; border-right: 1px solid var(--border); text-align: center; }
.bewijs__item:last-child { border-right: none; }
.bewijs__getal { font-family: var(--serif); font-size: 48px; color: var(--dark); line-height: 1; margin-bottom: 8px; }
.bewijs__getal span { color: var(--green); }
.bewijs__label { font-size: 14px; font-weight: 500; color: var(--dark); margin-bottom: 6px; }
.bewijs__bron { font-size: 11.5px; color: var(--muted); line-height: 1.4; }

/* CTA SECTION */
.sectie-cta { padding: 100px 0; background: var(--dark); position: relative; overflow: hidden; }
.sectie-cta::before { content: ''; position: absolute; top: -200px; left: 50%; transform: translateX(-50%); width: 800px; height: 400px; background: radial-gradient(ellipse, rgba(5,150,105,.15) 0%, transparent 70%); pointer-events: none; }
.cta__inner { text-align: center; position: relative; }
.cta__titel { font-family: var(--serif); font-size: clamp(30px, 4vw, 52px); color: var(--white); line-height: 1.15; max-width: 680px; margin: 0 auto 20px; }
.cta__sub { font-size: 17px; color: #9ca3af; max-width: 480px; margin: 0 auto 40px; line-height: 1.65; }
.cta__acties { display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; margin-bottom: 32px; }
.cta__prijs { font-size: 13px; color: #4b5563; display: flex; align-items: center; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta__prijs span::before { content: '· '; }
.cta__prijs span:first-child::before { content: ''; }

/* FOOTER */
.footer { background: #030712; padding: 60px 0 32px; }
.footer__inner { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer__merk h3 { font-family: var(--serif); font-size: 20px; color: var(--white); margin-bottom: 10px; }
.footer__merk p { font-size: 13.5px; color: #6b7280; line-height: 1.65; max-width: 280px; }
.footer__kolom h4 { font-size: 12px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: #4b5563; margin-bottom: 16px; }
.footer__kolom ul { list-style: none; }
.footer__kolom li { margin-bottom: 8px; }
.footer__kolom a { font-size: 13.5px; color: #6b7280; text-decoration: none; transition: color .15s; }
.footer__kolom a:hover { color: #9ca3af; }
.footer__bodem { border-top: 1px solid #111827; padding-top: 24px; display: flex; align-items: center; justify-content: space-between; }
.footer__bodem p { font-size: 12.5px; color: #374151; }

/* PAGE-SPECIFIC: ICP page */
.sectie-realiteit { background: #f8fafc; padding: 100px 0; border-top: 1px solid #e5e7eb; }
.realiteit__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.realiteit__titel { font-family: var(--serif); font-size: clamp(28px, 3.5vw, 42px); color: var(--dark); line-height: 1.2; margin-bottom: 24px; }
.realiteit__tekst { font-size: 16px; color: var(--muted); line-height: 1.75; margin-bottom: 20px; }
.realiteit__slot { font-size: 15px; color: var(--dark); font-weight: 500; line-height: 1.6; padding: 20px 24px; background: var(--green-light); border-left: 3px solid var(--green); border-radius: 0 8px 8px 0; }

/* FAQ */
.sectie-faq { padding: 100px 0; }
.faq__group { margin-bottom: 56px; }
.faq__group-title { font-family: var(--serif); font-size: 24px; color: var(--dark); margin-bottom: 24px; padding-bottom: 12px; border-bottom: 1px solid #e5e7eb; }
.faq__item { border-bottom: 1px solid #f3f4f6; }
.faq__question { width: 100%; text-align: left; background: none; border: none; cursor: pointer; padding: 20px 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; font-family: var(--sans); font-size: 16px; font-weight: 600; color: var(--dark); line-height: 1.4; }
.faq__question:hover { color: var(--green); }
.faq__icon { font-size: 20px; color: var(--green); flex-shrink: 0; transition: transform .2s; font-weight: 400; }
.faq__answer { font-size: 15px; color: var(--muted); line-height: 1.75; padding-bottom: 20px; display: none; max-width: 720px; }
.faq__answer.open { display: block; }
.faq__icon.open { transform: rotate(45deg); }

/* ANIMATIONS */
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
.hero__kicker { animation: fadeUp .5s ease both; }
.hero__title { animation: fadeUp .6s .1s ease both; }
.hero__sub { animation: fadeUp .6s .2s ease both; }
.hero__actions { animation: fadeUp .6s .3s ease both; }
.hero__proof { animation: fadeUp .6s .4s ease both; }

/* RESPONSIVE */
@media (max-width: 900px) {
  .probleem__grid, .probleem__grid--bottom { grid-template-columns: 1fr; }
  .realiteit__grid, .oplossing__header { grid-template-columns: 1fr; gap: 40px; }
  .methode__lagen { grid-template-columns: repeat(2, 1fr); }
  .bewijs__grid { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .methode__output { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .nav__links { display: none; }
  .methode__lagen { grid-template-columns: 1fr; }
  .bewijs__grid { grid-template-columns: 1fr 1fr; }
  .voor-na__header, .voor-na__rij { grid-template-columns: 1fr; }
  .methode__output { grid-template-columns: 1fr; }
}