/* RSD – Rhein Strategic Defence & Industry
   Stylesheet Navigation 2 „Expertise“ (Longpage v3.1_final, Freeze 13.09.2026)
   Design-Tokens gemäß Homepage-Handoff Expertise v1.1_final, Abschnitt 4.
   Reines CSS, keine externen Ressourcen, keine Animationen, keine Schatten/Verläufe.
   Im Integrations-Build in das gemeinsame assets/css/rsd.css überführen. */

/* ---------- Schriften (IBM Plex Sans, SIL OFL 1.1, self-hosted) ---------- */
@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");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:500;font-display:swap;
  src:url("../fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@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");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@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");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:400;font-display:swap;
  src:url("../fonts/ibm-plex-sans-latin-ext-400-normal.woff2") format("woff2");
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:600;font-display:swap;
  src:url("../fonts/ibm-plex-sans-latin-ext-600-normal.woff2") format("woff2");
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* ---------- Design-Tokens ---------- */
:root{
  --navy:#0B1F3A;        /* Primär: Headlines, Buttons, Navy-Blöcke */
  --navy-2:#1F3A5F;      /* Akzent: Linien, Nummern, Hover, Fokus */
  --graphit:#2F343B;     /* Fließtext */
  --steel:#6B7280;       /* Kicker, Labels, Hinweise */
  --off-white:#F4F5F7;   /* Boxen, CTA-Block, Mandatslogik */
  --line:#D5D9E0;        /* Trennlinien, Rahmen */
  --white:#FFFFFF;
  --bordeaux:#9F1D35;    /* Logo-Trennlinie / Platzhalter-Markierung (Klasse ph) */
  --font:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --content:1120px;
  --gutter:clamp(20px,4vw,48px);
  --section:72px;
  --header-h:72px;
}

/* ---------- Basis ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{margin:0;background:var(--white);color:var(--graphit);font-family:var(--font);
  font-size:17px;line-height:28px;font-weight:400;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:var(--navy);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{color:var(--navy-2)}
a:focus-visible,button:focus-visible{outline:2px solid var(--navy-2);outline-offset:3px}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
h1,h2,h3{color:var(--navy);margin:0;font-weight:600}
h1{font-size:40px;line-height:48px;letter-spacing:-0.01em}
h2{font-size:28px;line-height:36px;letter-spacing:-0.005em}
h3{font-size:16px;line-height:22px;text-transform:uppercase;letter-spacing:0.06em}
.kicker{display:block;margin:0 0 14px;color:var(--steel);font-size:12px;line-height:16px;font-weight:600;
  text-transform:uppercase;letter-spacing:0.08em}
.lead{font-size:19px;line-height:30px}
.small{font-size:13px;line-height:20px;color:var(--steel)}
.measure{max-width:760px}
.claim{color:var(--navy);font-weight:600;font-size:19px;line-height:30px}
.ph{background:rgba(159,29,53,.12);outline:1px solid var(--bordeaux);outline-offset:1px;padding:0 2px}

.wrap{max-width:var(--content);margin:0 auto;padding:0 var(--gutter)}

/* ---------- Skip-Link ---------- */
.skip{position:absolute;left:-9999px;top:0;background:var(--navy);color:var(--white);padding:10px 16px;
  font-weight:600;text-decoration:none;z-index:100}
.skip:focus{left:var(--gutter);top:8px}

/* ---------- Kopfzeile ---------- */
.site-header{border-bottom:1px solid var(--line);background:var(--white)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:var(--header-h);flex-wrap:wrap}
.brand{display:inline-flex;align-items:center;padding:14px 0}
.brand img{width:196px;height:44px}
.site-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 28px}
.site-nav a{display:inline-block;padding:10px 0;font-size:15px;line-height:20px;font-weight:500;color:var(--graphit);
  text-decoration:none;border-bottom:2px solid transparent}
.site-nav a:hover{color:var(--navy)}
.site-nav a[aria-current="page"]{color:var(--navy);font-weight:600;border-bottom-color:var(--navy)}

/* ---------- Sektionen ---------- */
.section{padding:var(--section) 0}
.section + .section{border-top:1px solid var(--line)}
.hero + .section{border-top:1px solid var(--line)}
.h2-lead{max-width:860px;margin-bottom:22px}

/* Hero */
.hero{padding:56px 0 var(--section)}
.hero .wrap{display:grid;grid-template-columns:58fr 42fr;gap:56px;align-items:center}
.hero h1{margin-bottom:22px}
.hero .claim{margin:6px 0 26px}
.hero .lead{margin-bottom:18px}

/* Bilder */
.figure{margin:0;position:relative;background:var(--off-white)}
.figure img{width:100%;height:100%;object-fit:cover}
.figure--hero{aspect-ratio:4/5}
.figure--hero img{object-position:center 40%}
.figure--band{aspect-ratio:21/9;margin:36px 0}
.figure--band img{object-position:center center}
.figure--capture-wrap{margin:0}
.figure--capture{aspect-ratio:4/3}
.figure--capture img{object-position:center 45%}
/* KI-Kennzeichnung (Art. 50 Abs. 4 KI-VO): sichtbar, je Bild, dezent */
.ai-label{position:absolute;right:10px;bottom:10px;margin:0;padding:4px 8px;background:rgba(11,31,58,.92);color:var(--white);
  font-size:12px;line-height:16px;font-weight:500;letter-spacing:0.02em;border-radius:2px}
.ai-caption{margin:8px 0 0;font-size:12px;line-height:16px;color:var(--steel);font-weight:500;letter-spacing:0.02em}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;height:48px;padding:0 26px;background:var(--navy);color:var(--white);
  font-size:15px;font-weight:700;line-height:1;text-decoration:none;border-radius:4px;border:1px solid var(--navy)}
.btn:hover{background:var(--navy-2);border-color:var(--navy-2);color:var(--white)}
.btn--light{background:var(--white);color:var(--navy);border-color:var(--white)}
.btn--light:hover{background:var(--off-white);border-color:var(--off-white);color:var(--navy)}

/* Fünf Schritte (Beratungsansatz) */
.steps{list-style:none;margin:28px 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:28px}
.steps li{border-top:2px solid var(--navy);padding-top:16px}
.steps .num{display:block;color:var(--navy-2);font-size:28px;line-height:32px;font-weight:600;margin-bottom:8px}
.steps h3{margin-bottom:8px}
.steps p{font-size:15px;line-height:24px}

/* Kernexpertisen */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:36px 48px;margin-top:28px}
.card h3{margin-bottom:10px}
.card--wide{margin-top:36px}
.split{display:grid;grid-template-columns:46fr 54fr;gap:48px;align-items:center;margin-top:44px}
.split .card{max-width:520px}
.infobox{background:var(--off-white);padding:32px 36px;margin-top:44px}
.infobox h3{margin-bottom:10px}

/* Mandate */
.mandates{display:grid;grid-template-columns:1fr 1fr;gap:22px 48px;margin-top:28px}
.mandates ul{list-style:none;margin:0;padding:0;display:grid;gap:22px;align-content:start}
.mandates strong{display:block;color:var(--navy);font-weight:600}
.mandates p{font-size:16px;line-height:26px}

/* Mandatslogik */
.logic{list-style:none;margin:28px 0 28px;padding:28px 32px;background:var(--off-white);display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.logic .num{display:block;color:var(--navy-2);font-size:28px;line-height:32px;font-weight:600;margin-bottom:6px}
.logic h3{margin-bottom:4px}
.logic p{font-size:15px;line-height:22px;color:var(--steel)}

/* Navy-Block */
.navy-block{background:var(--navy);color:var(--white);padding:48px 0}
.navy-block .kicker{color:rgba(255,255,255,.7)}
.navy-block h2{color:var(--white);margin-bottom:18px}
.navy-block p{color:rgba(255,255,255,.88)}
.navy-block .small{color:rgba(255,255,255,.66);margin-top:22px}
.navy-block .inner{padding:0 var(--gutter)}

/* CTA */
.cta{background:var(--off-white);padding:56px 0}
.cta h2{margin-bottom:14px}
.cta .btn{margin-top:26px}

/* ---------- Fußzeile ---------- */
.site-footer{background:var(--navy);color:rgba(255,255,255,.8);padding:44px 0 36px;font-size:13px;line-height:20px}
.site-footer .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 56px;align-items:start}
.site-footer .brand img{width:172px;height:39px}
.site-footer p{margin:0 0 10px}
.site-footer a{color:var(--white)}
.site-footer .legal{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 20px}
.site-footer .legal a{font-weight:500}
.site-footer .copy{color:rgba(255,255,255,.6);margin-top:14px}

/* ---------- Responsiv ---------- */
@media (max-width:900px){
  :root{--section:56px}
  .hero{padding-top:40px}
  .hero .wrap{grid-template-columns:1fr;gap:36px}
  .steps{grid-template-columns:1fr 1fr}
  .logic{grid-template-columns:repeat(3,1fr)}
  .split{grid-template-columns:1fr;gap:32px}
  .split .card{max-width:none;order:-1}
  .figure--band{aspect-ratio:16/9}
  .site-footer .wrap{grid-template-columns:1fr}
}
@media (max-width:600px){
  :root{--section:48px}
  body{font-size:16px;line-height:26px}
  h1{font-size:30px;line-height:36px}
  h2{font-size:24px;line-height:30px}
  .lead,.claim{font-size:17px;line-height:27px}
  .brand img{width:168px;height:38px}
  .site-header .wrap{padding-top:6px;padding-bottom:10px}
  .site-nav ul{gap:0 22px}
  .steps,.cards,.mandates,.logic{grid-template-columns:1fr}
  .logic{padding:24px 22px}
  .infobox{padding:24px 22px}
  .navy-block{padding:24px 0}
  .cta{padding:44px 0}
  .btn{width:100%}
}
@media print{
  .skip{display:none}
  .site-header,.site-footer{break-inside:avoid}
}