:root{--ink:#fff;--navy:#071626;--glass:rgba(7,22,36,.77);--line:rgba(224,244,255,.24)}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;min-height:100vh;background:var(--navy);color:var(--ink);font:16px/1.4 system-ui,-apple-system,"Segoe UI",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:focus-visible,summary:focus-visible{outline:3px solid #c2e7ff;outline-offset:3px}
.skip-link{position:absolute;z-index:20;top:-70px;left:16px;background:#fff;color:#071626;padding:12px 16px;border-radius:8px}.skip-link:focus{top:12px}
.landing{position:relative;isolation:isolate;display:flex;flex-direction:column;min-height:calc(100svh - 42px);overflow:hidden}
.hero-image,.hero-overlay{position:absolute;inset:0;width:100%;height:100%}
.hero-image{object-fit:cover;object-position:center 49%}
.hero-overlay{background:linear-gradient(180deg,rgba(7,24,47,.56),rgba(7,24,47,.24) 42%,rgba(5,15,26,.63)),linear-gradient(90deg,rgba(4,16,31,.24),transparent 55%)}
.hero-header{position:relative;z-index:2;display:flex;justify-content:space-between;align-items:flex-start;gap:20px;padding:30px 38px}
.brand-block{display:flex;flex-direction:column;gap:5px;text-shadow:0 2px 14px #001a35a8}.brand-title{font-size:clamp(2rem,3.5vw,4rem);font-weight:850;letter-spacing:.04em;line-height:1.12}.brand-subtitle{font-size:clamp(.88rem,1.2vw,1.35rem);font-weight:600}.brand-welcome{font-size:clamp(.85rem,1.05vw,1.1rem);margin-top:18px;letter-spacing:.02em;color:#e4ecf5}
.logo-badge{display:block;width:clamp(80px,10vw,155px);flex-shrink:0}.logo-badge img{display:block;width:100%;height:auto;filter:drop-shadow(0 4px 9px #00142388)}
.service-zone{position:relative;z-index:3;width:min(1150px,calc(100% - 64px));margin:auto auto clamp(25px,4.5vh,52px)}.service-title{display:flex;justify-content:center;align-items:center;gap:14px;margin-bottom:14px}.service-title h2{font-size:.76rem;letter-spacing:.18em;margin:0;color:#edf6ff}.service-line{height:1px;max-width:90px;flex:1;background:linear-gradient(90deg,transparent,#b2d5e6)}.service-line:last-child{transform:rotate(180deg)}
.tiles{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.tile{--accent:#82cafa;position:relative;min-width:0;min-height:71px;padding:9px 7px;border:1px solid var(--line);border-radius:12px;background:var(--glass);box-shadow:0 7px 22px #0004;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;text-align:center;transition:background .2s,transform .2s,border-color .2s}
a.tile:hover,a.tile:focus-visible{background:rgba(5,29,49,.94);transform:translateY(-2px);border-color:#b6deff}
.tile-untis{--accent:#ffc080}.tile-bycs{--accent:#90d2ff}.tile-outlook{--accent:#6ac3ff}.tile-teams{--accent:#c8b8ff}.tile-downloads{--accent:#80e0d1}.tile-schultage{--accent:#f9d894}.tile-homepage{--accent:#a8d8f5}
.tile-icon{height:24px;color:var(--accent)}.tile-icon svg{width:24px;height:24px;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.tile-copy{min-width:0}.tile-copy strong{font-size:clamp(.7rem,.87vw,.83rem);font-weight:700;line-height:1.18;display:block;overflow-wrap:break-word}
.tile-empty{background:rgba(6,20,33,.4);border-style:dashed;box-shadow:none;color:#d3e4f5a9;gap:1px;font-size:.69rem}.empty-plus{font-size:1.15rem;line-height:1}
.forms-tooltip{position:absolute;bottom:calc(100% + 12px);left:50%;transform:translate(-50%,5px);width:max-content;max-width:min(310px,80vw);padding:13px 15px;border-radius:10px;background:#0a2035;box-shadow:0 12px 32px #0009;border:1px solid #b2dffc88;font-size:.8rem;line-height:1.55;text-align:left;visibility:hidden;opacity:0;pointer-events:none;transition:opacity .17s,transform .17s;z-index:6;color:white;white-space:normal}
.tile-downloads:hover .forms-tooltip,.tile-downloads:focus-visible .forms-tooltip{visibility:visible;opacity:1;transform:translate(-50%,0)}
.forms-details{display:none;margin:12px auto 0;color:#f1f8ff;border:1px solid var(--line);border-radius:10px;background:#091c30d9;font-size:.85rem;padding:10px 13px}.forms-details summary{cursor:pointer;font-weight:650}.forms-details p{margin:8px 0 2px;line-height:1.5}
.site-footer{min-height:42px;background:#0b1826;display:flex;align-items:center;justify-content:center;padding:10px 14px}.site-footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:24px}.site-footer a{font-size:.75rem;color:#d7e4f2b3}.site-footer a:hover{color:white}
@media(max-width:1000px){.service-zone{width:calc(100% - 40px)}.landing{min-height:max(780px,calc(100svh - 42px))}}
@media(max-width:700px){.hero-header{padding:22px 20px}.brand-title{font-size:clamp(1.55rem,6vw,2.6rem)}.brand-welcome{margin-top:10px}.logo-badge{width:85px}.service-zone{width:calc(100% - 30px);margin-bottom:22px}.tiles{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.tile{min-height:72px}.tile-copy strong{font-size:.76rem}.forms-tooltip{display:none}.forms-details{display:block}}
@media(max-width:420px){.hero-header{padding:18px 14px}.logo-badge{width:68px}.brand-title{font-size:1.42rem}.brand-subtitle{font-size:.76rem}.brand-welcome{font-size:.8rem}.tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.landing{min-height:max(790px,calc(100svh - 42px))}.service-zone{width:calc(100% - 26px)}.tile{min-height:68px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}