*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --petrol:#004D6E;
  --petrol-dark:#003A52;
  --petrol-light:#E8F4F9;
  --braun:#9B6347;
  --braun-light:#F5EDE7;
  --text:#1A2E3A;
  --text-mid:#4A6070;
  --text-muted:#6E8090;
  --bg:#F4F7FA;
  --white:#FFFFFF;
  --border:rgba(0,77,110,0.12);
  --radius:12px;
  --radius-sm:8px;
  --shadow:0 4px 24px rgba(0,77,110,0.08);
  --shadow-lg:0 8px 40px rgba(0,77,110,0.14);
}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;font-size:16px;line-height:1.6;color:var(--text);background:var(--white)}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,0.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);height:68px;display:flex;align-items:center;padding:0 5%}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1140px;margin:0 auto}
.nav-logo img{height:28px;width:auto}
.nav-links{display:flex;align-items:center;gap:32px;list-style:none}
.nav-links a{text-decoration:none;color:var(--text-mid);font-size:15px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--petrol)}
.nav-cta{background:var(--braun);color:white!important;padding:9px 20px;border-radius:8px;font-weight:600!important;transition:background .2s!important}
.nav-cta:hover{background:#7D4F37!important}

/* HERO */
.hero{position:relative;min-height:100vh;display:flex;align-items:flex-end;padding:0 5% 60px;overflow:hidden;background:#002830}
.hero-bg-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(0,20,28,0.82) 0%,rgba(0,20,28,0.18) 55%,rgba(0,0,0,0.0) 100%);z-index:1}
.hero-inner{max-width:860px;margin:0;display:flex;flex-direction:column;align-items:flex-start;text-align:left;position:relative;z-index:2;width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(162,110,92,0.25);border:1px solid rgba(162,110,92,0.5);color:#D4956A;padding:5px 14px;border-radius:20px;font-size:12px;font-weight:600;margin-bottom:16px;letter-spacing:.02em;backdrop-filter:blur(4px)}
.hero h1{font-size:clamp(1.8rem,3.8vw,3rem);font-weight:700;color:white;line-height:1.15;margin-bottom:14px;max-width:680px;text-shadow:0 2px 24px rgba(0,0,0,0.5)}
.hero h1 em{font-style:normal;color:#D4956A}
.hero-sub{font-size:1rem;color:rgba(255,255,255,0.88);line-height:1.65;margin-bottom:28px;max-width:520px;text-shadow:0 1px 10px rgba(0,0,0,0.4)}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap}
.btn-primary{background:var(--braun);color:white;padding:15px 32px;border-radius:9px;font-size:15px;font-weight:600;text-decoration:none;border:none;cursor:pointer;transition:all .2s;display:inline-block}
.btn-primary:hover{background:#7D4F37;transform:translateY(-1px);box-shadow:0 6px 24px rgba(155,99,71,0.4)}
.btn-secondary{background:rgba(255,255,255,0.12);color:white;padding:15px 32px;border-radius:9px;font-size:15px;font-weight:600;text-decoration:none;border:1px solid rgba(255,255,255,0.35);cursor:pointer;transition:all .2s;display:inline-block;backdrop-filter:blur(4px)}
.btn-secondary:hover{background:rgba(255,255,255,0.22);transform:translateY(-1px)}
.hero-mute-btn{position:absolute;bottom:28px;right:28px;z-index:3;width:44px;height:44px;border-radius:50%;background:rgba(0,0,0,0.35);border:1px solid rgba(255,255,255,0.2);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s;padding:0}
.hero-mute-btn:hover{background:rgba(0,0,0,0.55)}
.hero-play-btn{position:absolute;bottom:28px;right:78px;z-index:3;width:44px;height:44px;border-radius:50%;background:rgba(0,0,0,0.35);border:1px solid rgba(255,255,255,0.2);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s;padding:0}
.hero-play-btn:hover{background:rgba(0,0,0,0.55)}
/* Prominent unmute banner */
.hero-unmute-banner{position:absolute;bottom:80px;right:28px;z-index:4;display:flex;align-items:center;gap:10px;background:rgba(0,77,110,0.82);border:1px solid rgba(255,255,255,0.35);backdrop-filter:blur(10px);color:white;font-size:14px;font-weight:600;padding:10px 18px;border-radius:30px;cursor:pointer;transition:all .2s;box-shadow:0 4px 20px rgba(0,0,0,0.35);animation:unmuteGlow 2s ease-in-out infinite alternate}
.hero-unmute-banner:hover{background:rgba(0,77,110,0.98);transform:scale(1.04)}
@keyframes unmuteGlow{from{box-shadow:0 4px 20px rgba(0,0,0,0.35)}to{box-shadow:0 4px 28px rgba(0,180,220,0.45)}}
/* Central play overlay after video ends */
.hero-center-play{position:absolute;inset:0;z-index:3;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;background:transparent;pointer-events:none}
.hero-center-play-btn{width:88px;height:88px;border-radius:50%;background:rgba(255,255,255,0.18);border:2px solid rgba(255,255,255,0.55);display:flex;align-items:center;justify-content:center;transition:all .2s;box-shadow:0 8px 40px rgba(0,0,0,0.4);pointer-events:all;cursor:pointer}
.hero-center-play:hover .hero-center-play-btn{background:rgba(255,255,255,0.30);transform:scale(1.07)}
.hero-center-play-label{margin-top:16px;color:white;font-size:14px;font-weight:600;letter-spacing:.04em;opacity:.85;pointer-events:all;cursor:pointer}
.video-placeholder-hint{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);z-index:1;text-align:center;pointer-events:none;opacity:.35}
.video-placeholder-hint svg{display:block;margin:0 auto 10px}
.video-placeholder-hint p{font-size:13px;color:white;font-weight:500;white-space:nowrap}
.scroll-arrow-wrap{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);z-index:3;opacity:.55}
.scroll-arrow{width:22px;height:22px;border-right:2px solid white;border-bottom:2px solid white;transform:rotate(45deg);animation:scrollBounce 1.6s ease-in-out infinite;display:block}
@keyframes scrollBounce{0%,100%{transform:rotate(45deg) translateY(0)}50%{transform:rotate(45deg) translateY(6px)}}



/* PUZZLE SECTION */
.puzzle-section{background:var(--bg);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 5% 64px;overflow:hidden}
.puzzle-inner{max-width:860px;margin:0 auto}
.puzzle-title{text-align:center;font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:44px}
/* Story layout */
.pz-story{display:flex;align-items:stretch;justify-content:space-between;gap:0}
.pz-col{display:flex;flex-direction:column;align-items:center;gap:10px;flex:1 1 0;min-width:0}
.pz-col-icon{width:52px;height:52px;border-radius:50%;background:#E0EEF1;border:2px solid #b0d4db;display:flex;align-items:center;justify-content:center}
.pz-col-title{font-size:13px;font-weight:700;color:var(--text);text-align:center}
.pz-puzzle-wrap{position:relative;width:100%;display:flex;justify-content:center;flex:1}
.pz-puzzle-wrap svg{width:100%;max-width:170px;height:auto;align-self:center}
.pz-col-sub{font-size:11px;color:var(--petrol);font-weight:600;text-align:center;background:var(--petrol-light);padding:4px 10px;border-radius:12px;transition:opacity .4s ease;margin-top:4px}
/* Step reference badges in puzzle */
.pz-col-step-ref{text-align:center;margin-bottom:6px}
.pz-step-ref-badge{display:inline-block;background:rgba(0,77,110,0.1);border:1px solid rgba(0,77,110,0.25);color:var(--petrol);font-size:11px;font-weight:700;padding:3px 10px;border-radius:10px;letter-spacing:.04em}
/* benefit check icon */
.benefit-check{flex-shrink:0;margin-right:2px}
/* Middle delta column */
.pz-middle{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:0 0 160px;padding-top:0;gap:0;align-self:stretch}
.pz-delta-wrap{display:flex;flex-direction:column;align-items:center;gap:0;transition:opacity .5s ease;width:100%}
.pz-delta-label{font-size:11px;font-weight:600;color:#a26e5c;letter-spacing:.04em;text-transform:uppercase;text-align:center;margin-bottom:4px}
.pz-badge{display:flex;align-items:center;gap:6px;border-radius:20px;padding:6px 12px;font-size:11px;font-weight:600;white-space:nowrap;width:100%;justify-content:center;box-sizing:border-box}
.pz-badge--petrol{background:var(--petrol-light);color:var(--petrol);border:1.5px solid rgba(0,75,91,0.2)}
.pz-badge--braun{background:var(--braun-light);color:#7A4326;border:1.5px solid rgba(162,110,92,0.25)}
.pz-badge-emoji{font-size:14px;line-height:1}
@media(max-width:700px){
  .pz-story{flex-direction:column;align-items:center;gap:20px}
  .pz-middle{flex:0 0 auto;width:auto}
  .pz-delta-wrap svg{transform:rotate(90deg)}
  .pz-badge{font-size:10px;padding:5px 10px}
}
/* Piece animation */
.pp-piece,.pb-piece{transition:opacity .4s ease,transform .4s ease;transform:translateY(-8px)}
.pp-piece.in,.pb-piece.in{opacity:1 !important;transform:translateY(0)}
/* Steps bar */
.pz-steps-bar{display:flex;align-items:center;justify-content:center;gap:12px;margin-top:32px;transition:opacity .5s ease}
.pz-step-item{display:flex;align-items:center;gap:8px}
.pz-step-num{width:24px;height:24px;border-radius:50%;background:var(--petrol);color:white;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.pz-step-text{font-size:13px;color:var(--text-mid);font-weight:500}
.pz-step-sep{font-size:16px;color:var(--text-muted)}
@media(max-width:700px){
  .pz-story{flex-direction:column;align-items:center;gap:16px}
  .pz-middle{padding-top:0;flex-direction:row;min-width:auto}
  .pz-delta-connector{width:32px;height:2px;background:linear-gradient(to right,#a26e5c,#1D9E75)}
  .pz-steps-bar{flex-direction:column;gap:8px}
  .pz-step-sep{transform:rotate(90deg)}
}

/* SECTIONS */
.section{padding:90px 5%}
.section-alt{background:var(--bg)}
.section-inner{max-width:1140px;margin:0 auto}
.section-tag{display:inline-block;background:var(--petrol-light);color:var(--petrol);font-size:12px;font-weight:600;padding:5px 12px;border-radius:20px;margin-bottom:12px;letter-spacing:0.04em}
.section-tag.braun{background:var(--braun-light);color:#7A4326}
h2{font-size:clamp(1.7rem,2.5vw,2.2rem);font-weight:700;color:var(--text);line-height:1.25;margin-bottom:14px}
.section-intro{font-size:1.05rem;color:var(--text-mid);max-width:780px;line-height:1.7;margin-bottom:50px}

/* HOW IT WORKS */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.step-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;position:relative;cursor:pointer;transition:all .3s}
.step-card:hover{border-color:var(--petrol);box-shadow:var(--shadow)}
.step-num{width:40px;height:40px;background:var(--petrol);color:white;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;margin-bottom:20px}
.step-card h3{font-size:1.1rem;font-weight:700;color:var(--text);margin-bottom:10px}
.step-card p{font-size:14px;color:var(--text-mid);line-height:1.65}
.step-connector{display:none}
.step-detail{max-height:0;overflow:hidden;transition:max-height .4s ease}
.step-card.open .step-detail{max-height:200px}
.step-more{font-size:13px;color:var(--petrol);font-weight:600;margin-top:14px;cursor:pointer}

/* VORTEILE TABS */
.tabs-nav{display:flex;gap:0;border-bottom:2px solid var(--border);margin-bottom:20px}
.tab-btn{padding:10px 22px;font-size:14px;font-weight:600;color:var(--text-mid);background:none;border:none;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .2s}
.tab-btn.active{color:var(--petrol);border-bottom-color:var(--petrol)}
.tab-btn:hover:not(.active){color:var(--text)}
.tab-panel{display:none}
.tab-panel.active{display:block}
.benefits-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.benefit-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.benefit-header{display:flex;align-items:center;gap:10px;padding:11px 14px}
.benefit-header:hover{background:var(--petrol-light)}

.benefit-title{font-size:14px;font-weight:600;color:var(--text);flex:1}
.benefit-arrow{display:none}
.benefit-body{display:block}
.benefit-body p{padding:0 14px 10px 44px;font-size:14px;color:var(--text-mid);line-height:1.65}

/* TESTIMONIALS */
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:28px 24px}
.testimonial-quote{font-size:15px;color:var(--text-mid);line-height:1.7;margin-bottom:20px;font-style:italic}
.testimonial-quote::before{content:'"';font-size:2rem;color:var(--petrol);line-height:0.5;display:block;margin-bottom:10px}
.testimonial-author{display:flex;align-items:center;gap:12px}
.author-avatar{width:42px;height:42px;border-radius:50%;background:var(--petrol-light);color:var(--petrol);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}
.author-name{font-size:14px;font-weight:600;color:var(--text)}
.author-role{font-size:12px;color:var(--text-muted)}

/* ÜBER UNS */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.about-text p{font-size:15px;color:var(--text-mid);line-height:1.75;margin-bottom:16px}
.about-stat-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:28px}
.about-stat{background:var(--petrol-light);border-radius:var(--radius-sm);padding:16px 20px}
.about-stat-num{font-size:1.6rem;font-weight:700;color:var(--petrol)}
.about-stat-label{font-size:13px;color:var(--text-mid);margin-top:2px}
.team-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.team-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.team-avatar{width:60px;height:60px;border-radius:50%;background:var(--petrol);color:white;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:16px}
.team-name{font-size:16px;font-weight:700;color:var(--text);margin-bottom:4px}
.team-title{font-size:14px;color:var(--braun);font-weight:600;margin-bottom:12px}
.team-bio{font-size:14px;color:var(--text-mid);line-height:1.65;margin-bottom:14px}
.team-email{font-size:13px;color:var(--petrol);text-decoration:none;font-weight:500}
.tech-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.tech-badge{background:var(--bg);border:1px solid var(--border);border-radius:20px;padding:6px 14px;font-size:13px;font-weight:500;color:var(--text-mid)}

/* CONTACT */
.contact-section{background:linear-gradient(135deg,#002830 0%,#004b5b 100%);padding:90px 5%}
.contact-inner{max-width:1140px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}
.contact-left h2{color:white;margin-bottom:14px}
.contact-left p{color:rgba(255,255,255,0.88);font-size:15px;line-height:1.7;margin-bottom:32px}
.contact-person{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.15);border-radius:12px;padding:22px}
.cp-name{font-size:16px;font-weight:700;color:white;margin-bottom:4px}
.cp-title{font-size:13px;color:rgba(255,255,255,0.72);margin-bottom:14px}
.cp-links{display:flex;flex-direction:column;gap:8px}
.cp-link{font-size:14px;color:white;text-decoration:none;display:flex;align-items:center;gap:10px}
.cp-link:hover{color:rgba(255,255,255,0.75)}
.cp-link svg{flex-shrink:0;opacity:0.9}
.form-success-state{display:none;text-align:center;padding:40px 20px}
.form-success-state.show{display:block;animation:fadeUp .5s ease both}
.form-success-icon{width:72px;height:72px;background:rgba(29,158,117,0.18);border:2px solid rgba(29,158,117,0.5);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto}
@keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}
.contact-form{background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:16px;padding:32px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.form-field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px}
.form-field label{font-size:13px;font-weight:500;color:rgba(255,255,255,0.85)}
.form-field input,.form-field textarea{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.2);border-radius:8px;padding:11px 14px;font-size:14px;color:white;font-family:inherit;outline:none;transition:border .2s}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(255,255,255,0.3)}
.form-field input:focus,.form-field textarea:focus{border-color:rgba(255,255,255,0.5);background:rgba(255,255,255,0.12)}
.form-field textarea{resize:vertical;min-height:100px}
.form-check{display:flex;align-items:flex-start;gap:10px;margin-bottom:20px}
.form-error{display:block;font-size:12px;color:#ff8a7a;margin-top:4px;min-height:16px}
.form-field input.input-error,.form-field textarea.input-error{border-color:rgba(255,100,80,0.7)!important;background:rgba(255,80,60,0.08)!important}
.form-check.check-error label{color:rgba(255,150,130,0.9)}
.form-check.check-error label{color:rgba(255,150,130,0.9)}
.form-check label{font-size:13px;color:rgba(255,255,255,0.8);line-height:1.5}
.form-check a{color:#9FE1CB}
.form-submit{width:100%;background:var(--braun);color:white;border:none;padding:14px;border-radius:9px;font-size:15px;font-weight:600;cursor:pointer;font-family:inherit;transition:all .2s}
.form-submit:hover{background:#7D4F37;transform:translateY(-1px)}
.download-bar{display:flex;align-items:center;gap:12px;margin-top:20px;padding:14px 18px;background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.12);border-radius:10px;cursor:pointer;transition:background .2s;text-decoration:none}
.download-bar:hover{background:rgba(255,255,255,0.1)}
.download-icon{font-size:20px}
.download-text{flex:1}
.download-title{font-size:14px;font-weight:600;color:white}
.download-sub{font-size:12px;color:rgba(255,255,255,0.5)}

/* FOOTER */
footer{background:#001E2B;padding:40px 5%}
.footer-inner{max-width:1140px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:20px}
.footer-logo img{height:28px;opacity:0.9}
.footer-links{display:flex;gap:24px;list-style:none}
.footer-links a{font-size:13px;color:rgba(255,255,255,0.55);text-decoration:none;transition:color .2s}
.footer-links a:hover{color:rgba(255,255,255,0.8)}
.footer-copy{font-size:13px;color:rgba(255,255,255,0.65)}

/* ── MOBILE RESPONSIVE ── */
@media (max-width:900px) {
  nav{padding:0 4%}
  .nav-links{gap:16px}
  .nav-links li:not(:last-child){display:none}
  .section{padding:60px 5%}
  .steps{grid-template-columns:1fr;gap:16px}
  .testimonials-grid{grid-template-columns:1fr;gap:16px}
  .about-grid{grid-template-columns:1fr;gap:32px}
  .team-grid{grid-template-columns:1fr;gap:16px}
  .contact-inner{grid-template-columns:1fr;gap:32px}
  .puzzle-stage{flex-wrap:wrap;gap:16px;justify-content:center}
  .puzzle-arrow{display:none}
  .footer-inner{flex-direction:column;align-items:flex-start;gap:16px}
}

@media (max-width:600px) {
  nav{height:58px}
  .nav-logo img{height:28px}
  .hero{padding:80px 5% 60px}
  .hero h1{font-size:clamp(1.6rem,7vw,2.2rem)}
  .hero-sub{font-size:0.95rem}
  .hero-ctas{flex-direction:column;gap:10px}
  .btn-primary,.btn-secondary{width:100%;text-align:center;padding:13px 20px}
  .hero-mute-btn,.hero-play-btn{bottom:16px}
  .hero-mute-btn{right:16px}
  .hero-play-btn{right:66px}
  .section{padding:48px 5%}
  .section-inner{max-width:100%}
  h2{font-size:1.5rem}
  .section-intro{font-size:0.95rem}
  .benefits-grid{grid-template-columns:1fr;gap:8px}
  .tabs-nav{flex-wrap:wrap}
  .tab-btn{padding:8px 14px;font-size:13px}
  .steps{grid-template-columns:1fr}
  .testimonials-grid{grid-template-columns:1fr}
  .about-grid{grid-template-columns:1fr}
  .team-grid{grid-template-columns:1fr}
  .contact-inner{grid-template-columns:1fr;gap:24px}
  .contact-section{padding:60px 5%}
  .contact-form{padding:20px}
  .form-row{grid-template-columns:1fr;gap:0}
  .puzzle-stage{gap:8px}
  .footer-inner{gap:12px}
  .footer-links{gap:14px;flex-wrap:wrap}
}

/* VORTEILE IMG */
.vorteile-img-wrap{text-align:center;margin-bottom:40px}
.vorteile-img-wrap img{max-width:480px;width:100%;border-radius:12px}
/* WCAG 2.2 — Focus indicator (2.4.7) */
*:focus-visible{outline:2px solid var(--petrol);outline-offset:3px;border-radius:3px}
*:focus:not(:focus-visible){outline:none}

/* WCAG 2.2 — Screen-reader only utility */
.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}

/* Step 4 highlight */
.step-card--highlight{border-color:rgba(162,110,92,0.35);background:linear-gradient(135deg,#fff 80%,#fdf5f1 100%)}
.step-card--highlight:hover{border-color:var(--braun);box-shadow:0 4px 24px rgba(162,110,92,0.14)}