/* RSD – Rhein Strategic Defence & Industry · Startseite (Navigation 1)
   Longpage v2.1_final · Freeze 13.09.2026
   Reines CSS, keine externen Ressourcen. Schriften self-hosted (IBM Plex, OFL). */

/* ---------- Schriften ---------- */
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;src:url("../fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:700;font-display:swap;src:url("../fonts/ibm-plex-sans-latin-700-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Serif";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/ibm-plex-serif-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"IBM Plex Serif";font-style:italic;font-weight:400;font-display:swap;src:url("../fonts/ibm-plex-serif-latin-400-italic.woff2") format("woff2")}

/* ---------- Tokens ---------- */
:root{
  --navy-deep:#0B1F3A;
  --navy:#132C4F;
  --navy-ink:#0A1A30;
  --steel:#5B6470;
  --steel-light:#8A94A3;
  --bordeaux:#9F1D35;
  --bordeaux-light:#9F1D35;
  --bordeaux-ink:#9F1D35;
  --line:#D9DDE3;
  --grey:#F3F4F6;
  --white:#FFFFFF;
  --text:#1B2331;
  --sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  --serif:"IBM Plex Serif",Georgia,"Times New Roman",serif;
  --max:1200px;
  --gutter:clamp(20px,5vw,64px);
}

/* ---------- Basis ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--sans);font-size:17px;line-height:1.6;color:var(--text);background:var(--white)}
img,picture,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3,p{margin:0}
.wrap{max-width:var(--max);margin:0 auto;padding-left:var(--gutter);padding-right:var(--gutter)}
.skip{position:absolute;left:-999px;top:8px;background:var(--bordeaux);color:var(--white);padding:10px 16px;font-weight:600;z-index:100}
.skip:focus{left:8px;outline:3px solid var(--navy-deep)}
:focus-visible{outline:3px solid var(--bordeaux);outline-offset:3px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- Typografie ---------- */
.eyebrow{font-family:var(--sans);font-size:11.5px;font-weight:600;letter-spacing:.22em;text-transform:uppercase;color:var(--bordeaux);margin-bottom:18px}
.eyebrow--muted{color:var(--steel-light)}
.h-display{font-family:var(--serif);font-weight:400;font-size:clamp(34px,4.6vw,54px);line-height:1.08;text-transform:uppercase;letter-spacing:.005em;color:var(--navy-deep)}
.h-section{font-family:var(--serif);font-weight:400;font-size:clamp(28px,3.4vw,40px);line-height:1.15;color:var(--navy-deep)}
.h-caps{font-family:var(--serif);font-weight:400;font-size:clamp(26px,3.2vw,38px);line-height:1.15;text-transform:uppercase;letter-spacing:.01em;color:var(--navy-deep)}
.lead{font-size:clamp(17px,1.5vw,19px);line-height:1.6;max-width:62ch}
.copy{max-width:66ch}
.copy p + p{margin-top:16px}
.on-dark .h-section,.on-dark .h-caps,.on-dark .h-display{color:var(--white)}
.on-dark{color:#DCE3EC}
.on-dark .eyebrow{color:var(--bordeaux-light)}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:12px;background:var(--bordeaux);color:var(--white);font-weight:600;font-size:15px;text-decoration:none;padding:15px 26px;border:1px solid var(--bordeaux);transition:background .2s,color .2s,border-color .2s}
.btn svg{width:16px;height:16px;flex:none}
.btn:hover{background:var(--bordeaux-ink);color:var(--white);border-color:var(--bordeaux-ink)}
.btn:hover svg{stroke:var(--white)}

/* ---------- 01 Header / Navigation ---------- */
.site-header{background:var(--navy-deep);color:var(--white)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:96px;padding-top:14px;padding-bottom:14px}
.brand{display:block;flex:none}
.brand img{height:48px;width:auto}
.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.35);color:var(--white);font:inherit;font-size:12px;letter-spacing:.18em;text-transform:uppercase;padding:10px 14px;cursor:pointer}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;gap:clamp(18px,3vw,40px)}
.site-nav a{font-size:12.5px;font-weight:600;letter-spacing:.2em;text-transform:uppercase;text-decoration:none;color:#DCE3EC;padding:8px 0;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--white);border-bottom-color:var(--bordeaux-light)}
.site-nav a[aria-current="page"]{color:var(--white);border-bottom-color:var(--bordeaux-light)}

/* ---------- 02 Hero-Bild ---------- */
.hero{position:relative;margin:0;background:var(--navy-deep)}
.hero img{width:100%;height:auto;aspect-ratio:21/9;object-fit:cover;object-position:50% 40%}
.hero .site-line{position:absolute;left:0;right:0;bottom:0;padding:18px var(--gutter);font-size:11px;font-weight:600;letter-spacing:.3em;text-transform:uppercase;color:#E8EDF3;text-shadow:0 1px 8px rgba(0,0,0,.55);background:linear-gradient(to top,rgba(11,31,58,.55),rgba(11,31,58,0))}

/* ---------- 03 Hero-Textblock ---------- */
.hero-text{padding:clamp(56px,7vw,96px) 0 clamp(56px,7vw,88px)}
.hero-text .h-display{max-width:16ch;margin-bottom:28px}
.hero-text .btn{margin-top:36px}

/* ---------- 04 Zwischenclaim ---------- */
.claim-band{background:var(--navy);color:var(--white);text-align:center;padding:clamp(52px,6vw,80px) 0}
.claim-band .h-section{color:var(--white);font-size:clamp(24px,3vw,34px)}
.claim-band .eyebrow{margin:20px 0 0;color:var(--bordeaux-light)}

/* ---------- Sektionen allgemein ---------- */
.section{padding:clamp(64px,8vw,112px) 0}
.section--grey{background:var(--grey)}
.section--navy{background:var(--navy-deep)}
.section-head{margin-bottom:clamp(40px,5vw,64px)}
.section-head .lead{margin-top:22px}

/* ---------- 05 Unser Ansatz ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:40px 32px}
.step .num{font-family:var(--serif);font-size:26px;color:var(--bordeaux);margin-bottom:10px}
.step h3{font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--navy-deep);margin-bottom:10px}
.step p{font-size:15.5px;color:var(--steel);line-height:1.55}

/* ---------- 06 Bildmodule ---------- */
.modules{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.module{margin:0}
.module .media{aspect-ratio:3/2;overflow:hidden;background:var(--navy-deep)}
.module .media img{width:100%;height:100%;object-fit:cover}
.module .ai-note{font-size:12px;color:var(--steel);margin-top:8px;letter-spacing:.02em}
.module h3{font-size:12px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--navy-deep);margin:18px 0 10px}
.module p.text{font-size:15.5px;color:var(--steel);line-height:1.55}
/* typografische Kachel (Slot 03) */
.tile{aspect-ratio:3/2;background:var(--navy-deep);color:var(--white);padding:clamp(18px,2vw,26px);display:flex;flex-direction:column;justify-content:space-between;gap:12px;border-top:3px solid var(--navy);overflow:hidden}
.tile .tile-eyebrow{font-size:10.5px;font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:var(--white)}
.tile ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:2px 12px;font-family:var(--serif);font-size:clamp(15px,1.25vw,17px);line-height:1.4;color:#E8EDF3}
.module--tile > h3{margin-top:46px}
.tile ul span{color:var(--white);margin-right:.5em}
.transition-line{margin-top:clamp(40px,5vw,64px);text-align:center;font-family:var(--serif);font-size:clamp(19px,2vw,24px);color:var(--bordeaux-ink)}

/* ---------- 07 Überzeugung ---------- */
.conviction{display:grid;grid-template-columns:5fr 7fr;gap:0}
.conviction .quote-panel{background:var(--navy-deep);color:var(--white);padding:clamp(40px,5vw,72px) clamp(28px,4vw,64px);display:flex;align-items:center}
.conviction blockquote{margin:0;font-family:var(--serif);font-style:italic;font-size:clamp(22px,2.4vw,30px);line-height:1.35;border-left:3px solid var(--bordeaux-light);padding-left:24px;color:#EEF2F7}
.conviction .text-panel{padding:clamp(40px,5vw,72px) clamp(28px,4vw,64px);background:var(--white)}
.conviction .text-panel .copy{margin-top:24px}
.conviction .copy p{color:var(--text)}

/* ---------- 08 RSD im Überblick ---------- */
.overview .rule{border:0;border-top:1px solid rgba(255,255,255,.18);margin:clamp(36px,4vw,56px) 0}
.cols4{display:grid;grid-template-columns:repeat(4,1fr);gap:40px 32px}
.cols4 h3{font-size:11.5px;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--bordeaux-light);margin-bottom:12px}
.cols4 p{font-size:15.5px;line-height:1.55;color:#C9D2DE}

/* ---------- 09 Differenzierung ---------- */
.diff .copy{margin-top:24px}

/* ---------- 10 Leistungslogik ---------- */
.services{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.services li{display:grid;grid-template-columns:56px 1fr 1.2fr;gap:24px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--line)}
.services .num{font-family:var(--serif);color:var(--bordeaux);font-size:18px}
.services .title{font-weight:600;color:var(--navy-deep);font-size:16.5px}
.services .desc{color:var(--steel);font-size:15.5px}

/* ---------- 11 Schluss-CTA ---------- */
.cta{position:relative;isolation:isolate;color:var(--white);background:var(--navy-deep)}
.cta picture,.cta img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 55%;z-index:-2}
.cta::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,31,58,.92) 0%,rgba(11,31,58,.78) 45%,rgba(11,31,58,.45) 100%);z-index:-1}
.cta .wrap{padding-top:clamp(72px,9vw,128px);padding-bottom:clamp(72px,9vw,128px)}
.cta .h-section{color:var(--white);max-width:22ch}
.cta p.lead{color:#DCE3EC;margin-top:22px}
.cta .btn{margin-top:32px}
.cta .address{margin-top:40px;font-size:13px;letter-spacing:.04em;color:#C9D2DE}

/* ---------- 12 Footer ---------- */
.site-footer{background:var(--navy-ink);color:#B7C1CF;font-size:13px;line-height:1.6}
.footer-top{display:grid;grid-template-columns:1fr auto;gap:40px;padding:56px 0 36px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-top img{height:36px;width:auto;margin-bottom:22px}
.footer-top address{font-style:normal;color:#B7C1CF}
.footer-nav ul,.footer-legal ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-nav a,.footer-legal a{color:#DCE3EC;text-decoration:none;font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:600}
.footer-nav a:hover,.footer-legal a:hover{color:var(--bordeaux-light)}
.footer-legal{margin-top:18px}
.footer-notes{padding:32px 0 48px;font-size:12.5px;color:#93A0B1}
.footer-notes p + p{margin-top:12px}
.footer-notes strong{color:#B7C1CF;font-weight:600}

/* ---------- Platzhalter (Klasse ph, Bordeaux) ---------- */
.ph{background:rgba(159,29,53,.12);color:var(--bordeaux-ink);padding:0 .3em;outline:1px dashed var(--bordeaux)}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .cols4{grid-template-columns:repeat(2,1fr)}
  .conviction{grid-template-columns:1fr}
  .modules{grid-template-columns:1fr}
  .module .media,.tile{aspect-ratio:16/9}
  .services li{grid-template-columns:48px 1fr}
  .services .desc{grid-column:2}
}
@media (max-width:640px){
  body{font-size:16px}
  .site-header .wrap{min-height:72px;flex-wrap:wrap}
  .brand img{height:34px}
  .js .nav-toggle{display:inline-block}
  .js .site-nav{display:none;width:100%}
  .js .site-nav.is-open{display:block}
  .js .site-nav ul{flex-direction:column;gap:4px;padding:8px 0 4px}
  .js .site-nav a{display:block;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.12)}
  .site-nav ul{flex-wrap:wrap;gap:12px 20px}
  .hero img{aspect-ratio:4/5;object-position:50% 50%}
  .hero .site-line{display:none}
  .hero-text .btn{width:100%;justify-content:center}
  .steps,.cols4{grid-template-columns:1fr}
  .cols4 > div + div{border-top:1px solid rgba(255,255,255,.14);padding-top:24px}
  .footer-top{grid-template-columns:1fr}
  .cta::before{background:linear-gradient(180deg,rgba(11,31,58,.9),rgba(11,31,58,.85))}
  .cta img{object-position:50% 50%}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}