/* =========================================================
   Förderverein des Instituts für Arbeitswissenschaft
   der RWTH Aachen e.V. — Stylesheet
   ========================================================= */

/* ---------- 1. Design-Tokens ---------- */
:root{
  --navy-900:#0A1B33;
  --navy-800:#0D2444;
  --navy-700:#10315C;
  --navy-600:#173F72;
  --blue:#00549F;          /* RWTH Blau 100 % */
  --blue-hover:#04407E;
  --blue-050:#EAF1F8;
  --blue-100:#D3E2F1;
  --accent:#F5A800;        /* RWTH Gelb – nur für den Spenden-CTA */
  --accent-hover:#DE9700;

  --white:#FFFFFF;
  --off-white:#F5F8FC;
  --line:#DCE5EF;
  --line-dark:rgba(255,255,255,.16);

  --text:#16202E;
  --text-soft:#455568;
  --text-muted:#5A6C80;
  --on-dark:#FFFFFF;
  --on-dark-soft:#C3D3E6;
  --on-dark-muted:#9FB3C9;

  --radius-s:8px;
  --radius:14px;
  --radius-l:22px;

  --shadow-s:0 1px 2px rgba(10,27,51,.06), 0 2px 8px rgba(10,27,51,.05);
  --shadow-m:0 4px 12px rgba(10,27,51,.08), 0 12px 32px rgba(10,27,51,.08);
  --shadow-l:0 18px 50px rgba(10,27,51,.16);

  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --wrap:1160px;
  --header-h:74px;

  --sp-section: clamp(4.5rem, 9vw, 7.5rem);
}

/* ---------- 2. Reset & Basis ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:clamp(1rem,.97rem + .18vw,1.075rem);
  line-height:1.65;
  color:var(--text);
  background:var(--white);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{max-width:100%;}
img{height:auto;display:block;}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:.18em;}
a:hover{color:var(--blue-hover);}
h1,h2,h3,h4{line-height:1.18;margin:0 0 .6em;letter-spacing:-.015em;font-weight:700;color:var(--navy-900);
  text-wrap:balance;}
h1{font-size:clamp(2.2rem,1.35rem + 3.6vw,4rem);letter-spacing:-.028em;}
h2{font-size:clamp(1.7rem,1.2rem + 2.1vw,2.75rem);letter-spacing:-.022em;}
h3{font-size:clamp(1.15rem,1.03rem + .5vw,1.4rem);}
h4{font-size:1.1rem;}
p{margin:0 0 1.1em;text-wrap:pretty;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px;border-radius:4px;}
::selection{background:var(--blue);color:#fff;}

.wrap{width:min(100% - 2.5rem,var(--wrap));margin-inline:auto;}
.wrap-narrow{width:min(100% - 2.5rem,780px);}
.nowrap{white-space:nowrap;}
.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;}

.skip-link{
  position:absolute;left:1rem;top:-100px;z-index:200;
  background:var(--accent);color:var(--navy-900);font-weight:600;
  padding:.7rem 1.2rem;border-radius:0 0 var(--radius-s) var(--radius-s);
  transition:top .2s;
}
.skip-link:focus{top:0;}

/* ---------- 3. Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.85em 1.6em;border-radius:999px;border:2px solid transparent;
  font-weight:650;font-size:1rem;line-height:1.2;text-decoration:none;
  white-space:nowrap;cursor:pointer;transition:background-color .18s,color .18s,border-color .18s,transform .18s,box-shadow .18s;
}
.btn:hover{transform:translateY(-2px);}
.btn:active{transform:translateY(0);}
.btn-sm{padding:.6em 1.1em;font-size:.9rem;}
.btn-primary{background:var(--blue);color:#fff;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:var(--blue-hover);color:#fff;box-shadow:var(--shadow-m);}
.btn-accent{background:var(--accent);color:var(--navy-900);box-shadow:0 4px 14px rgba(245,168,0,.35);}
.btn-accent:hover{background:var(--accent-hover);color:var(--navy-900);}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.5);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;}
.btn-outline{background:transparent;color:var(--navy-900);border-color:var(--line);box-shadow:var(--shadow-s);}
.btn-outline:hover{color:var(--blue);border-color:var(--blue);background:var(--blue-050);}
.btn-icon{width:1.35em;height:1.35em;flex:none;}
.btn-row{margin-top:1.6rem;}
.link-arrow{font-weight:600;text-decoration:none;border-bottom:2px solid var(--blue-100);padding-bottom:2px;}
.link-arrow:hover{border-color:var(--blue);}

/* ---------- 4. Header ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.88);
  backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s,box-shadow .25s;
}
.site-header.is-stuck{border-bottom-color:var(--line);box-shadow:0 2px 14px rgba(10,27,51,.06);}
.header-inner{display:flex;align-items:center;gap:1rem;min-height:var(--header-h);}
.brand{display:flex;align-items:center;gap:.7rem;text-decoration:none;color:var(--navy-900);margin-right:auto;min-width:0;flex:0 1 auto;}
.brand-mark{width:34px;height:34px;color:var(--blue);flex:none;}
.brand-mark svg{width:100%;height:100%;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-text strong{font-size:.98rem;letter-spacing:-.01em;white-space:nowrap;}
.brand-text span{font-size:.74rem;color:var(--text-muted);letter-spacing:.01em;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}

.primary-nav{display:flex;align-items:center;gap:1.3rem;min-width:0;}
.primary-nav ul{display:flex;gap:1.1rem;list-style:none;}
.primary-nav ul a{
  text-decoration:none;color:var(--text-soft);font-size:.9rem;font-weight:550;
  padding:.35rem 0;position:relative;white-space:nowrap;
}
.primary-nav ul a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .22s;
}
.primary-nav ul a:hover,.primary-nav ul a.is-active{color:var(--navy-900);}
.primary-nav ul a:hover::after,.primary-nav ul a.is-active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:.75rem;flex:none;}

.lang-switch{display:inline-flex;flex:none;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#fff;}
.lang-switch button{
  flex:none;border:0;background:transparent;padding:.4rem .75rem;font:inherit;font-size:.8rem;font-weight:650;
  letter-spacing:.03em;line-height:1.35;white-space:nowrap;color:var(--text-muted);cursor:pointer;
  transition:background-color .18s,color .18s;
}
.lang-switch button:hover{color:var(--navy-900);background:var(--off-white);}
.lang-switch button.is-active{background:var(--navy-900);color:#fff;}

.nav-toggle{display:none;flex-direction:column;justify-content:center;gap:5px;width:44px;height:44px;padding:0 10px;background:none;border:0;cursor:pointer;}
.nav-toggle span{display:block;height:2px;background:var(--navy-900);border-radius:2px;transition:transform .25s,opacity .2s;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 5. Sektions-Grundraster ---------- */
.section{padding:var(--sp-section) 0;scroll-margin-top:calc(var(--header-h) + 8px);}
.section-tint{background:var(--off-white);}
.section-dark{background:var(--navy-900);color:var(--on-dark-soft);}
.section-dark h2,.section-dark h3,.section-dark h4{color:#fff;}
.section-dark .kicker{color:var(--accent);}
.section-dark .section-intro{color:var(--on-dark-soft);}
.section-head{max-width:62ch;margin-bottom:clamp(2.5rem,5vw,3.75rem);}
.section-head-center{margin-inline:auto;text-align:center;}
.kicker{
  font-size:.78rem;font-weight:750;letter-spacing:.14em;text-transform:uppercase;
  color:var(--blue);margin:0 0 .85rem;
}
.section-intro{font-size:clamp(1.05rem,1rem + .3vw,1.2rem);color:var(--text-soft);margin-bottom:0;
  text-wrap:balance;}
.subhead{margin:clamp(3rem,5vw,4rem) 0 1.6rem;font-size:1.25rem;}
.source-line{margin-top:2.5rem;font-size:.88rem;color:var(--text-muted);}

/* ---------- 6. Hero ---------- */
.hero{
  position:relative;isolation:isolate;
  min-height:clamp(560px,84vh,860px);
  display:flex;align-items:center;
  background:var(--navy-900);color:#fff;overflow:hidden;
  scroll-margin-top:var(--header-h);
}
.hero-media{position:absolute;inset:0;z-index:-2;}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 35%;}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(105deg, rgba(10,27,51,.96) 0%, rgba(10,27,51,.88) 38%, rgba(13,36,68,.62) 68%, rgba(16,49,92,.45) 100%),
    radial-gradient(120% 90% at 12% 20%, rgba(0,84,159,.42), transparent 62%);
}
.hero-inner{padding:clamp(5rem,11vh,8rem) 0 clamp(6rem,12vh,9rem);max-width:62rem;}
.hero .eyebrow{
  font-size:.8rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);margin:0 0 1.3rem;max-width:44ch;line-height:1.5;
}
.hero h1{color:#fff;margin-bottom:.55em;max-width:19ch;}
.hero .lead{font-size:clamp(1.08rem,1rem + .55vw,1.35rem);color:#DCE7F4;max-width:58ch;margin-bottom:2.4rem;text-wrap:balance;}
.hero-cta{display:flex;flex-wrap:wrap;gap:.9rem;}

.scroll-hint{
  position:absolute;left:50%;bottom:1.9rem;translate:-50% 0;z-index:2;
  width:44px;height:44px;display:grid;place-items:center;color:rgba(255,255,255,.75);
  border:1px solid rgba(255,255,255,.28);border-radius:50%;
  animation:bob 2.6s ease-in-out infinite;
}
.scroll-hint:hover{color:#fff;border-color:#fff;}
.scroll-hint svg{width:22px;height:22px;}
@keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(6px);}}

/* ---------- 7. Kennzahlen ---------- */
.stat-grid{display:grid;gap:1.5rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);
  padding:2.1rem 1.8rem;box-shadow:var(--shadow-s);
  transition:transform .25s,box-shadow .25s;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.stat-label{
  display:block;color:var(--blue);letter-spacing:-.025em;line-height:1.2;
  font-size:clamp(1.3rem,1.05rem + 1.1vw,1.85rem);margin-bottom:.3rem;
}
.stat-card h3{font-size:1.06rem;line-height:1.45;margin-bottom:.8rem;font-weight:650;}
.stat-card p{color:var(--text-soft);font-size:.98rem;}
.stat-card .stat-src{margin-top:1.1rem !important;font-size:.8rem;color:var(--text-muted);}

/* ---------- 8. Zweispaltiger Block ---------- */
.split{display:grid;gap:clamp(2rem,4vw,3.5rem);align-items:start;}
.split-aside{display:none;}
.quote{
  margin:0 0 1.8rem;padding:1.5rem 0 1.5rem 1.6rem;
  border-left:4px solid var(--blue);
}
.quote p{font-size:clamp(1.08rem,1rem + .5vw,1.28rem);color:var(--navy-800);font-weight:500;line-height:1.55;}
.quote footer{margin-top:.9rem;font-size:.86rem;color:var(--text-muted);font-weight:600;letter-spacing:.01em;}
.aside-figure{margin:0;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-m);}
.aside-figure img{width:100%;aspect-ratio:4/5;object-fit:cover;}

/* ---------- 9. Domänen-Karten ---------- */
.domain-grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));margin-top:clamp(2.6rem,5vw,3.6rem);}
.domain-card{
  background:#fff;border:1px solid var(--line);border-top:3px solid var(--blue);
  border-radius:var(--radius);padding:1.9rem 1.6rem;transition:transform .25s,box-shadow .25s;
}
.domain-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.domain-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:14px;background:var(--blue-050);color:var(--blue);margin-bottom:1.2rem;}
.domain-icon svg{width:30px;height:30px;}
.domain-card p{color:var(--text-soft);font-size:.97rem;margin:0;}

/* ---------- 10. Diagramm ---------- */
.diagram{display:grid;gap:clamp(2.2rem,4vw,3rem);}
.diagram-block{
  background:rgba(255,255,255,.045);border:1px solid var(--line-dark);
  border-radius:var(--radius-l);padding:clamp(1.4rem,3vw,2.2rem);
}
.diagram-title{font-size:1.05rem;display:flex;flex-wrap:wrap;align-items:center;gap:.7rem;margin-bottom:1.5rem;}
.diagram-title-muted{color:var(--on-dark-soft) !important;}
.tag{
  font-size:.68rem;font-weight:750;letter-spacing:.1em;text-transform:uppercase;
  padding:.3em .7em;border-radius:999px;
}
.tag-muted{background:rgba(255,255,255,.13);color:var(--on-dark-soft);}
.tag-accent{background:var(--accent);color:var(--navy-900);}
.diagram-scroll{overflow-x:auto;padding-bottom:.4rem;-webkit-overflow-scrolling:touch;}
.chain{display:block;min-width:600px;width:100%;height:auto;}
.chain-boxes rect{fill:rgba(255,255,255,.08);stroke:rgba(255,255,255,.3);stroke-width:1.5;}
.chain-labels text{fill:#fff;font-family:var(--font);font-size:16px;font-weight:600;text-anchor:middle;}
.chain-arrows path{fill:none;stroke:rgba(255,255,255,.45);stroke-width:2;stroke-linecap:round;stroke-linejoin:round;}
.chain-people circle{fill:none;stroke-width:2.2;}
.chain-people path{fill:none;stroke-width:2.2;stroke-linecap:round;}
.chain-muted .chain-people circle,.chain-muted .chain-people path{stroke:rgba(255,255,255,.45);}
.chain-muted .chain-boxes rect.is-highlight{fill:rgba(255,255,255,.14);stroke:rgba(255,255,255,.55);}
.chain-strong .chain-people circle,.chain-strong .chain-people path{stroke:var(--accent);}
.chain-strong .chain-boxes rect{fill:rgba(0,84,159,.45);stroke:rgba(140,190,240,.65);}
.chain-base{fill:var(--accent);}
.chain-base-label{fill:var(--navy-900);font-family:var(--font);font-size:15px;font-weight:700;text-anchor:middle;}
.diagram-note{margin-top:1.4rem;font-size:.96rem;color:var(--on-dark-soft);max-width:70ch;}
.chain-strong + .diagram-note,.diagram-block:last-child .diagram-note{color:#fff;font-weight:500;}

.ht-points{display:grid;gap:1.8rem;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));margin-top:clamp(3rem,6vw,4.5rem);}
.ht-point{border-top:2px solid var(--accent);padding-top:1.3rem;}
.ht-point h3{font-size:1.08rem;margin-bottom:.6rem;}
.ht-point p{font-size:.97rem;color:var(--on-dark-soft);margin:0;}

/* ---------- 11. Forschungsfelder ---------- */
.field-grid{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));}
.field-card{
  position:relative;display:block;text-decoration:none;color:inherit;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:1.7rem 3rem 1.7rem 1.6rem;
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.field-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:var(--blue-100);color:inherit;}
.field-card h4{color:var(--navy-900);margin-bottom:.5rem;}
.field-card:hover h4{color:var(--blue);}
.field-card p{font-size:.95rem;color:var(--text-soft);margin:0;}
.field-more{position:absolute;top:1.6rem;right:1.4rem;color:var(--blue);font-size:1.1rem;transition:transform .25s;}
.field-card:hover .field-more{transform:translate(3px,-3px);}

/* ---------- 12. Videos ---------- */
.video-grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.video-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-s);transition:transform .25s,box-shadow .25s;}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.video-facade{
  display:block;width:100%;padding:0;border:0;background:var(--navy-900);
  font:inherit;text-align:left;color:inherit;cursor:pointer;position:relative;
}
.video-facade img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:opacity .25s,transform .4s;}
.video-facade:hover img{opacity:.82;transform:scale(1.03);}
.video-play{
  position:absolute;top:calc(50% - 1.4rem);left:50%;translate:-50% -50%;
  width:64px;height:45px;color:rgba(20,20,20,.78);transition:color .2s,transform .2s;
  filter:drop-shadow(0 3px 10px rgba(0,0,0,.35));
}
.video-facade:hover .video-play{color:#E22B27;transform:translate(-50%,-50%) scale(1.08);}
.video-label{display:block;padding:1.05rem 1.2rem 1.25rem;background:#fff;color:var(--navy-900);font-weight:600;font-size:.97rem;line-height:1.42;}
.video-embed{width:100%;aspect-ratio:16/9;border:0;display:block;}
.privacy-note{margin-top:1.6rem;font-size:.87rem;color:var(--text-muted);}
.social-row{display:flex;flex-wrap:wrap;gap:.9rem;margin-top:2.2rem;}

/* ---------- 13. Verein ---------- */
.purpose-list{list-style:none;display:grid;gap:.9rem;grid-template-columns:repeat(auto-fit,minmax(330px,1fr));}
.purpose-list li{display:flex;gap:.9rem;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.15rem 1.3rem;font-size:.98rem;color:var(--text-soft);}
.check{flex:none;width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:var(--blue-050);color:var(--blue);font-size:.8rem;font-weight:800;margin-top:.12rem;}
.trust-row{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(275px,1fr));margin-top:clamp(2.4rem,5vw,3.4rem);}
.trust-card{border-left:3px solid var(--blue);padding:.3rem 0 .3rem 1.4rem;}
.trust-card h3{font-size:1.05rem;margin-bottom:.55rem;}
.trust-card p{font-size:.95rem;color:var(--text-soft);}
.trust-card .btn-row{margin-top:1rem;}

/* ---------- 14. Wirkung ---------- */
.impact-grid{display:grid;gap:1.2rem;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));}
.impact-card{
  background:linear-gradient(170deg,var(--blue-050),#fff 62%);
  border:1px solid var(--blue-100);border-radius:var(--radius-l);
  padding:1.9rem 1.5rem;transition:transform .25s,box-shadow .25s;
}
.impact-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);}
.impact-amount{font-size:clamp(2rem,1.5rem + 1.8vw,2.7rem);font-weight:800;color:var(--blue);letter-spacing:-.035em;line-height:1;margin:0 0 .75rem;}
.impact-amount span{font-size:.6em;font-weight:700;}
.impact-card p:last-child{font-size:.97rem;color:var(--text-soft);margin:0;}
.impact-promise{
  margin:clamp(2.6rem,5vw,3.6rem) auto 0;max-width:52ch;text-align:center;
  font-size:clamp(1.25rem,1.05rem + 1vw,1.75rem);font-weight:700;line-height:1.35;
  color:var(--navy-900);letter-spacing:-.02em;text-wrap:balance;
}

/* ---------- 15. Spenden ---------- */
.section-donate{background:linear-gradient(160deg,var(--navy-900),var(--navy-700));}
.donate-box{
  display:grid;gap:clamp(1.8rem,4vw,3rem);
  background:#fff;color:var(--text);border-radius:var(--radius-l);
  padding:clamp(1.6rem,4vw,3rem);box-shadow:var(--shadow-l);
}
.account-list{margin:0;display:grid;gap:.2rem;}
.account-row{display:grid;gap:.15rem;padding:.95rem 0;border-bottom:1px solid var(--line);}
.account-row:first-child{padding-top:0;}
.account-row dt{font-size:.78rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--text-muted);}
.account-row dd{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:.7rem;}
.account-value{font-size:1.05rem;font-weight:600;color:var(--navy-900);word-break:break-word;}
.account-iban{font-variant-numeric:tabular-nums;letter-spacing:.055em;font-size:clamp(1.05rem,.95rem + .5vw,1.3rem);}
.copy-btn{
  display:inline-flex;align-items:center;gap:.4rem;flex:none;
  padding:.35rem .8rem;border:1px solid var(--line);border-radius:999px;
  background:var(--off-white);font:inherit;font-size:.82rem;font-weight:600;color:var(--text-soft);
  cursor:pointer;transition:background-color .18s,color .18s,border-color .18s;
}
.copy-btn:hover{background:var(--blue-050);border-color:var(--blue-100);color:var(--blue);}
.copy-btn.is-done{background:#E7F5EC;border-color:#B7E0C6;color:#1B7A43;}
.copy-icon{width:13px;height:13px;border:1.5px solid currentColor;border-radius:3px;position:relative;flex:none;}
.copy-icon::before{content:"";position:absolute;left:2.5px;top:-4px;width:11px;height:11px;border:1.5px solid currentColor;border-bottom:0;border-left:0;border-radius:3px;}
.copy-btn.is-done .copy-icon{border:0;transform:rotate(45deg) translate(-1px,-3px);width:7px;height:12px;border-right:2.5px solid currentColor;border-bottom:2.5px solid currentColor;border-radius:1px;}
.copy-btn.is-done .copy-icon::before{display:none;}

.hint{margin-top:1.4rem;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--off-white);}
.hint summary{cursor:pointer;padding:.8rem 1rem;font-weight:600;font-size:.93rem;color:var(--navy-800);}
.hint summary:hover{color:var(--blue);}
.hint p{padding:0 1rem 1rem;margin:0;font-size:.93rem;color:var(--text-soft);}
.tax-note{margin-top:1.5rem;font-size:.86rem;line-height:1.6;color:var(--text-muted);}

.donate-qr{display:flex;flex-direction:column;align-items:center;text-align:center;gap:1rem;justify-content:center;}
.qr-frame{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1rem;box-shadow:var(--shadow-s);}
.qr-frame img{width:210px;height:210px;}
.qr-caption{font-size:.88rem;color:var(--text-soft);max-width:30ch;margin:0;}

/* ---------- 16. Mitgliedschaft ---------- */
.member-grid{display:grid;gap:1.4rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));}
.member-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-l);padding:2rem 1.8rem;box-shadow:var(--shadow-s);}
.member-card h3{margin-bottom:.35rem;}
.member-for{font-size:.82rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--blue);margin-bottom:1rem;}
.member-card p:last-child{font-size:.97rem;color:var(--text-soft);margin:0;}
.member-cta{margin-top:2.2rem;max-width:62ch;}
.member-cta p{color:var(--text-soft);}

/* ---------- 17. Rechtstexte ---------- */
.section-legal{padding:clamp(3rem,6vw,4.5rem) 0;border-top:1px solid var(--line);background:var(--white);}
.section-legal h2{font-size:clamp(1.5rem,1.2rem + 1.2vw,2rem);margin-bottom:1.2rem;}
.section-legal h3{font-size:1.02rem;margin:2rem 0 .6rem;color:var(--navy-800);}
.section-legal p{font-size:.93rem;color:var(--text-soft);line-height:1.7;}
.legal-note{font-size:.84rem !important;color:var(--text-muted) !important;font-style:italic;}

/* ---------- 18. Footer ---------- */
.site-footer{background:var(--navy-900);color:var(--on-dark-soft);padding:clamp(3rem,6vw,4.5rem) 0 1.8rem;}
.footer-grid{display:grid;gap:2.2rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));}
.footer-name{color:#fff;font-size:1rem;line-height:1.45;margin-bottom:.9rem;text-wrap:balance;}
.footer-address{font-size:.92rem;line-height:1.7;}
.site-footer a{color:var(--on-dark-soft);text-decoration:none;}
.site-footer a:hover{color:#fff;text-decoration:underline;}
.footer-nav h2{font-size:.78rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:1rem;}
.footer-nav ul{list-style:none;display:grid;gap:.6rem;}
.footer-nav a{font-size:.93rem;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;
  margin-top:3rem;padding-top:1.4rem;border-top:1px solid var(--line-dark);
  font-size:.85rem;color:var(--on-dark-muted);
}
.footer-bottom p{margin:0;}

/* ---------- 19. Reveal-Animation ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 20. Breakpoints ---------- */
@media (min-width:700px){
  .split{grid-template-columns:1.55fr 1fr;}
  .split-aside{display:block;position:sticky;top:calc(var(--header-h) + 2rem);}
  .split-reverse .split-main{order:2;}
  .split-reverse .split-aside{order:1;}
  .donate-box{grid-template-columns:1.6fr 1fr;align-items:center;}
}
@media (max-width:1219px){
  .nav-toggle{display:flex;}
  .primary-nav{
    position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-m);
    max-height:0;overflow:hidden;visibility:hidden;
    transition:max-height .3s ease,visibility .3s;
  }
  .primary-nav.is-open{max-height:75vh;overflow-y:auto;visibility:visible;}
  .primary-nav ul{flex-direction:column;gap:0;padding:.5rem 1.25rem;}
  .primary-nav li{border-bottom:1px solid var(--line);}
  .primary-nav li:last-child{border-bottom:0;}
  .brand-text span{white-space:normal;overflow:visible;text-overflow:clip;line-height:1.3;}
  .primary-nav ul a{display:block;padding:.95rem 0;font-size:1rem;}
  .primary-nav ul a::after{display:none;}
  .nav-actions{padding:1rem 1.25rem 1.5rem;justify-content:space-between;}
}
@media (max-width:600px){
  .hero{min-height:auto;}
  .hero-inner{padding-block:clamp(3.5rem,14vh,6rem) clamp(4.5rem,14vh,7rem);}
  .scroll-hint{display:none;}
  .purpose-list{grid-template-columns:1fr;}
  .qr-frame img{width:180px;height:180px;}
}

/* ---------- 21. Bewegung reduzieren / Druck ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}
@media print{
  .site-header,.scroll-hint,.video-grid,.social-row,.hero-media{display:none !important;}
  .section-dark,.section-donate,.site-footer{background:#fff !important;color:#000 !important;}
  .section-dark h2,.section-dark h3,.section-dark p{color:#000 !important;}
  .reveal{opacity:1 !important;transform:none !important;}
}