/* trittleiter.com — Design: "Werkstatt & Alu"
   Palette: Graphit, Alu-Grau, Sicherheits-Orange, Stahlblau
   Systemschriften only (0 Webfont-Requests -> PageSpeed 100) */

:root{
  --ink:#22272e;
  --muted:#5a6472;
  --bg:#ffffff;
  --surface:#f4f6f8;
  --line:#dde2e8;
  --steel:#17495b;
  --steel-soft:#e3edf1;
  --accent:#d9480f;
  --accent-dark:#b23a0a;
  --ok:#2b7a3d;
  --radius:6px;
  --font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono","Cascadia Mono","Segoe UI Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;font-size:1.0625rem}
img,svg{max-width:100%;height:auto;display:block}
a{color:var(--steel);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--accent-dark)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:2px}
.wrap{max-width:70rem;margin:0 auto;padding:0 1.25rem}

/* ---------- Header ---------- */
.site-header{border-bottom:1px solid var(--line);background:var(--bg);position:relative}
.header-in{display:flex;align-items:center;gap:1rem;justify-content:space-between;padding:.85rem 1.25rem;max-width:70rem;margin:0 auto}
.logo{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.2rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.logo-mark{width:26px;height:26px;flex:none;background:
  linear-gradient(var(--accent),var(--accent)) left bottom/100% 33% no-repeat,
  linear-gradient(var(--steel),var(--steel)) left bottom/66% 66% no-repeat,
  linear-gradient(var(--ink),var(--ink)) left bottom/33% 100% no-repeat;
  border-radius:3px}
.logo em{font-style:normal;color:var(--muted);font-weight:600}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:var(--radius);padding:.45rem .7rem;font:inherit;font-weight:600;cursor:pointer;color:var(--ink)}
.site-nav ul{display:flex;gap:.25rem;list-style:none;margin:0;padding:0;flex-wrap:wrap}
.site-nav a{display:block;padding:.45rem .7rem;text-decoration:none;font-weight:600;font-size:.95rem;border-radius:var(--radius);color:var(--ink)}
.site-nav a:hover{background:var(--steel-soft);color:var(--steel)}
@media(max-width:820px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--bg);border-bottom:1px solid var(--line);z-index:50;box-shadow:0 12px 24px rgba(34,39,46,.08)}
  .site-nav.open{display:block}
  .site-nav ul{flex-direction:column;padding:.5rem 1rem 1rem}
  .site-nav a{padding:.7rem .5rem}
}

/* ---------- Breadcrumb ---------- */
.crumbs{font-size:.85rem;color:var(--muted);padding:.8rem 0 0}
.crumbs a{color:var(--muted)}
.crumbs span[aria-current]{color:var(--ink);font-weight:600}

/* ---------- Hero ---------- */
.hero{padding:2.5rem 0 2.75rem;background:linear-gradient(180deg,var(--surface),var(--bg))}
.hero-grid{display:grid;gap:2rem;grid-template-columns:1fr;align-items:center}
@media(min-width:760px){.hero-grid{grid-template-columns:1.4fr .6fr}}
.hero h1{font-size:clamp(1.8rem,4.5vw,2.7rem);line-height:1.15;letter-spacing:-.02em;margin:.25rem 0 .75rem;font-weight:800}
.hero p{font-size:1.1rem;color:var(--muted);max-width:38em;margin:0 0 1.4rem}
.eyebrow{font-family:var(--mono);font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;color:var(--steel);font-weight:600}

/* Signatur: CSS-Treppe (3 Stufen) */
.stair{width:min(240px,80%);aspect-ratio:2/1.35;justify-self:center;background:
  linear-gradient(var(--steel),var(--steel)) 0 100%/33.4% 100% no-repeat,
  linear-gradient(#2d6478,#2d6478) 33.3% 100%/33.4% 66% no-repeat,
  linear-gradient(#6699ab,#6699ab) 66.6% 100%/33.4% 33% no-repeat;
  border-bottom:6px solid var(--accent);border-radius:4px 4px 0 0}
@media(max-width:759px){.stair{display:none}}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:.7rem 1.25rem;border-radius:var(--radius);font-weight:700;text-decoration:none;border:2px solid transparent;font-size:1rem}
.btn-amazon{background:var(--accent);color:#fff}
.btn-amazon:hover{background:var(--accent-dark);color:#fff}
.btn-ghost{border-color:var(--steel);color:var(--steel)}
.btn-ghost:hover{background:var(--steel-soft)}
.btn+.btn{margin-left:.6rem}

/* ---------- Sections & Typo ---------- */
main{padding-bottom:3rem}
section{margin:2.75rem 0}
h2{font-size:clamp(1.4rem,3vw,1.8rem);letter-spacing:-.015em;line-height:1.25;margin:0 0 .5rem;padding-bottom:.55rem;background:
  linear-gradient(var(--accent),var(--accent)) 0 100%/3rem 4px no-repeat,
  linear-gradient(var(--steel),var(--steel)) 3rem 100%/1.5rem 4px no-repeat}
h3{font-size:1.15rem;margin:1.5rem 0 .4rem}
.lead{color:var(--muted);max-width:44em}
ul,ol{padding-left:1.3rem}
li{margin:.3rem 0}

/* ---------- Produktkarten & Tabellen ---------- */
.cards{display:grid;gap:1.25rem;grid-template-columns:1fr;margin:1.5rem 0}
@media(min-width:700px){.cards{grid-template-columns:repeat(3,1fr)}}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:1.25rem;display:flex;flex-direction:column;background:var(--bg);position:relative}
.card.pick{border-color:var(--steel);box-shadow:0 6px 18px rgba(23,73,91,.10)}
.badge{position:absolute;top:-0.8rem;left:1rem;background:var(--steel);color:#fff;font-size:.72rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:.25rem .6rem;border-radius:3px}
.badge.price{background:var(--ok)}
.card h3{margin:.4rem 0 .2rem;font-size:1.08rem}
.card .for{color:var(--muted);font-size:.9rem;margin:0 0 .8rem}
.specs{list-style:none;padding:0;margin:0 0 1rem;font-size:.92rem}
.specs li{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px dashed var(--line);padding:.3rem 0;margin:0}
.specs b{font-family:var(--mono);font-weight:600;white-space:nowrap}
.card .btn{margin-top:auto;text-align:center}
.aff-note{font-size:.78rem;color:var(--muted);margin-top:.5rem}

.table-scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.95rem;margin:1rem 0}
th,td{border:1px solid var(--line);padding:.55rem .7rem;text-align:left;vertical-align:top}
th{background:var(--surface);font-size:.85rem;text-transform:uppercase;letter-spacing:.05em}
td b{font-family:var(--mono);font-weight:600}
tr:nth-child(even) td{background:#fbfcfd}

/* ---------- Pro/Contra, Info, FAQ ---------- */
.pro-con{display:grid;gap:1rem;grid-template-columns:1fr}
@media(min-width:700px){.pro-con{grid-template-columns:1fr 1fr}}
.pro,.con{border-radius:var(--radius);padding:1rem 1.25rem;border:1px solid var(--line)}
.pro{background:#f2f8f3;border-color:#cde4d2}
.con{background:#fbf3ef;border-color:#efd6c8}
.pro h3,.con h3{margin-top:0}
.pro ul,.con ul{margin:0}
.note{background:var(--steel-soft);border-left:4px solid var(--steel);padding:.9rem 1.1rem;border-radius:0 var(--radius) var(--radius) 0;margin:1.25rem 0}
details{border:1px solid var(--line);border-radius:var(--radius);margin:.6rem 0;background:var(--bg)}
summary{cursor:pointer;font-weight:700;padding:.85rem 1rem;list-style-position:inside}
details[open] summary{border-bottom:1px solid var(--line)}
details p{padding:0 1rem;color:var(--muted)}

/* ---------- Link-Hub ---------- */
.hub{display:grid;gap:1.5rem;grid-template-columns:1fr}
@media(min-width:700px){.hub{grid-template-columns:repeat(3,1fr)}}
.hub h3{margin-top:0;font-size:1rem;text-transform:uppercase;letter-spacing:.06em;color:var(--steel)}
.hub ul{list-style:none;padding:0;margin:0}
.hub a{text-decoration:none;display:inline-block;padding:.15rem 0}
.hub a:hover{text-decoration:underline}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#cfd6dd;margin-top:3rem;font-size:.92rem}
.site-footer .wrap{padding-top:2.25rem;padding-bottom:2rem}
.foot-grid{display:grid;gap:1.5rem;grid-template-columns:1fr}
@media(min-width:700px){.foot-grid{grid-template-columns:2fr 1fr 1fr 1fr}}
.site-footer h3{color:#fff;font-size:.9rem;text-transform:uppercase;letter-spacing:.08em;margin:0 0 .6rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer a{color:#cfd6dd;text-decoration:none}
.site-footer a:hover{color:#fff;text-decoration:underline}
.foot-legal{border-top:1px solid #3a4149;margin-top:1.75rem;padding-top:1.25rem;font-size:.82rem;color:#9aa4ae}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:.6rem 1rem;z-index:99;border-radius:0 0 var(--radius) 0}
.skip:focus{left:0}