/* Becken-Guide: In 7 Etappen zum ersten Becken (step-by-step how-to) */
.how-page{--col:720px;position:relative;background:linear-gradient(180deg,#fff 0,#fbf8f5 40%,#fff 100%)}
.how-col{width:min(var(--col),100% - 2*var(--gutter));margin-inline:auto}
.how-progress{position:fixed;left:0;right:0;top:0;height:3px;z-index:60;pointer-events:none}
.how-progress span{display:block;height:100%;width:100%;transform-origin:0 50%;transform:scaleX(var(--p,0));background:linear-gradient(90deg,#ffb07a,var(--accent))}
.how-hero{position:relative;isolation:isolate;overflow:hidden;padding:calc(var(--nav-h) + 76px) 0 clamp(48px,6vw,80px)}
.how-hero::before{content:"";position:absolute;inset:-20% -10% auto;height:120%;z-index:-1;background:radial-gradient(40% 46% at 82% 30%,rgba(255,95,3,.28),rgba(255,95,3,0) 70%),radial-gradient(30% 40% at 8% 70%,rgba(255,140,70,.22),rgba(255,140,70,0) 70%);filter:blur(10px)}
.how-label{display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 14px;border-radius:var(--pill);font-family:var(--mono);font-size:.75rem;letter-spacing:.02em;color:var(--accent-text);background:rgba(255,255,255,.6);border:1px solid rgba(242,101,34,.25);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.how-hero h1{margin-top:18px;font-size:clamp(2.4rem,1.2rem + 4.6vw,4.6rem);line-height:1;letter-spacing:-.045em}
.how-lead{margin-top:22px;font-size:var(--t-lead);line-height:1.5;color:var(--ink-2)}
.how-meta{margin-top:22px;font-size:var(--t-micro);color:var(--ink-3)}
.route{list-style:none;margin:32px 0 0;padding:0;display:grid;grid-template-columns:repeat(7,1fr);gap:6px;counter-reset:r}
.route a{display:flex;flex-direction:column;gap:6px;height:100%;padding:12px 10px 12px;border-radius:14px;font-size:.78rem;line-height:1.2;color:var(--ink-2);text-decoration:none;background:linear-gradient(180deg,rgba(255,255,255,.85),rgba(255,236,224,.55));border:1px solid rgba(20,21,24,.07);box-shadow:inset 0 1px 0 #fff;transition:transform .2s ease,border-color .2s ease}
.route a b{font-family:var(--mono);font-size:1.05rem;color:var(--accent-text)}
.route a:hover{transform:translateY(-2px);border-color:rgba(242,101,34,.4)}
@media (max-width:700px){.route{grid-template-columns:repeat(4,1fr)}}
.rail{position:fixed;left:clamp(12px,2.2vw,40px);top:50%;transform:translateY(-50%);z-index:30;display:none}
.rail ol{list-style:none;margin:0;padding:10px 8px;display:grid;gap:4px;border-radius:22px;background:rgba(255,255,255,.62);border:1px solid rgba(20,21,24,.08);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3)}
.rail a{display:flex;align-items:center;gap:10px;padding:5px 8px 5px 5px;border-radius:999px;color:var(--ink-3);text-decoration:none;font-size:.8125rem}
.rail__n{display:grid;place-items:center;width:26px;height:26px;border-radius:50%;font-family:var(--mono);font-size:.75rem;border:1px solid var(--line-2);background:#fff;transition:background .2s,color .2s,border-color .2s}
.rail__t{max-width:0;overflow:hidden;white-space:nowrap;transition:max-width .3s ease}
.rail a:hover .rail__t,.rail a:focus-visible .rail__t,.rail a.is-on .rail__t{max-width:110px}
.rail a.is-done .rail__n{border-color:var(--accent);color:var(--accent-text)}
.rail a.is-on{color:var(--ink)}
.rail a.is-on .rail__n{background:var(--accent);border-color:var(--accent);color:#fff}
@media (min-width:1200px){.rail{display:block}}
.bleed{margin:clamp(48px,7vw,96px) 0;position:relative}
.bleed img{display:block;width:100%;height:clamp(260px,38vw,560px);object-fit:cover}
.bleed figcaption{width:min(var(--col),100% - 2*var(--gutter));margin:14px auto 0;font-size:var(--t-small);color:var(--ink-3)}
.stage{position:relative;padding:clamp(40px,6vw,72px) 0;scroll-margin-top:calc(var(--nav-h) + 24px)}
.stage+.stage{border-top:1px solid var(--line)}
.stage__head{display:flex;align-items:flex-end;gap:clamp(14px,2.4vw,28px)}
.stage__num{flex:none;font-size:clamp(5.2rem,3rem + 8vw,9.5rem);line-height:.78;font-weight:800;letter-spacing:-.07em;background:linear-gradient(160deg,#ffd3b4 0%,#ff7a2c 46%,#c8400a 100%);-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 10px 22px rgba(242,101,34,.22))}
.stage__kicker{font-family:var(--mono);font-size:.75rem;color:var(--ink-3);letter-spacing:.02em}
.stage h2{margin-top:6px;font-size:var(--t-h3);line-height:1.1;letter-spacing:-.03em}
.stage__ph{margin:28px 0 0;position:relative;overflow:hidden;border-radius:var(--r);aspect-ratio:16/9;background:var(--glass)}
.stage__ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stage__body{margin-top:24px}
.stage__body p{color:var(--ink-2);line-height:1.65}
.stage__body p+p{margin-top:14px}
.stage__body a{color:var(--accent-text);text-decoration:underline;text-underline-offset:3px}
.stage__grid{margin-top:26px;display:grid;gap:14px;grid-template-columns:1fr}
@media (min-width:720px){.stage__grid{grid-template-columns:1fr 1fr}.stage__grid>:only-child{grid-column:1/-1}}
.stage__card,.need{position:relative;isolation:isolate;overflow:hidden;padding:20px;border-radius:var(--r);background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(255,241,232,.7));border:1px solid rgba(20,21,24,.07);box-shadow:inset 0 1px 0 #fff,0 18px 40px -28px rgba(200,64,10,.35)}
.stage__card::after,.need::after{content:"";position:absolute;inset:auto -30% -60% 30%;height:120%;z-index:-1;background:radial-gradient(closest-side,rgba(255,112,32,.18),rgba(255,112,32,0));pointer-events:none}
.need__h{font-family:var(--mono);font-size:.75rem;color:var(--accent-text);letter-spacing:.03em;text-transform:uppercase}
.check{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px}
.check li{display:flex;gap:12px;align-items:flex-start;font-size:var(--t-small);color:var(--ink);line-height:1.4}
.check__box{flex:none;width:20px;height:20px;margin-top:1px;border-radius:6px;background:var(--accent);position:relative;box-shadow:0 4px 10px -4px rgba(242,101,34,.6)}
.check__box::after{content:"";position:absolute;left:7px;top:3px;width:5px;height:10px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.need__list{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.need__item{display:flex;align-items:center;gap:12px;padding:6px 10px 6px 6px;border-radius:14px;background:rgba(255,255,255,.75);border:1px solid rgba(20,21,24,.06);text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.need__item:hover{border-color:rgba(242,101,34,.45);transform:translateX(2px)}
.need__ph{position:relative;flex:none;width:48px;height:48px;border-radius:10px;overflow:hidden;background:#fff}
.need__ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.need__txt{flex:1;display:flex;flex-direction:column;min-width:0}
.need__name{font-size:.9rem;font-weight:600;line-height:1.25}
.need__price{font-size:.8125rem;color:var(--ink-3)}
.need__item .ico{width:16px;height:16px;color:var(--accent-text)}
.tanks{list-style:none;margin:26px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media (max-width:640px){.tanks{grid-template-columns:repeat(2,1fr)}}
.tank{display:flex;flex-direction:column;height:100%;padding:10px 10px 14px;border-radius:var(--r);background:linear-gradient(180deg,#fff,rgba(255,241,232,.7));border:1px solid rgba(20,21,24,.07);text-decoration:none;color:var(--ink);transition:border-color .2s,transform .2s}
.tank:hover{border-color:rgba(242,101,34,.45);transform:translateY(-2px)}
.tank__ph{position:relative;aspect-ratio:1/1;border-radius:14px;overflow:hidden;background:#fff}
.tank__ph img{position:absolute;inset:6%;width:88%;height:88%;object-fit:contain}
.tank__name{margin-top:10px;font-weight:600;font-size:.95rem}
.tank__dim{font-size:.8125rem;color:var(--ink-3);font-family:var(--mono)}
.tank__bar{margin-top:10px;height:6px;border-radius:99px;background:rgba(20,21,24,.07);position:relative;overflow:hidden}
.tank__bar::before{content:"";position:absolute;inset:0 auto 0 0;width:calc(var(--l)*100%);border-radius:inherit;background:linear-gradient(90deg,#ffb07a,var(--accent))}
.tank__meta{margin-top:8px;display:flex;justify-content:space-between;align-items:baseline;font-size:.8125rem;color:var(--ink-2)}
.tank__meta strong{font-size:.95rem;color:var(--ink)}
.how-end{margin:clamp(40px,6vw,72px) 0 var(--section);padding:clamp(24px,4vw,40px);border-radius:var(--r-lg);background:linear-gradient(160deg,#fff 0,#ffe9da 100%);border:1px solid rgba(242,101,34,.18)}
.how-end h2{font-size:var(--t-h3);letter-spacing:-.03em}
.how-end p{margin-top:14px;color:var(--ink-2);line-height:1.6}
.how-end p:last-child{margin-top:22px}
@media (prefers-reduced-motion:reduce){.route a,.need__item,.tank,.rail__t{transition:none}}
.how-hero+.bleed{margin-top:0}