:root{--bg:#fff;--fg:#1d2733;--mut:#5b6775;--acc:#2f6fb3;--soft:#eef4fb;--line:#d9e2ec}
@media(prefers-color-scheme:dark){:root{--bg:#10161d;--fg:#e6edf3;--mut:#9aa7b4;--acc:#88b3de;--soft:#18222d;--line:#2a3745}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:4rem}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
.wrap{max-width:960px;margin:0 auto;padding:0 1rem}
.top{position:sticky;top:0;background:var(--bg);border-bottom:1px solid var(--line);z-index:5}
.top .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;align-items:center;padding-top:.6rem;padding-bottom:.6rem}
.brand{font-weight:800;color:var(--acc);text-decoration:none;font-size:1.15rem}
nav a{margin-right:.9rem;color:var(--fg);text-decoration:none;font-size:.95rem}nav a:hover{color:var(--acc)}
h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;margin:1.5rem 0 .8rem}
h2{font-size:1.5rem;margin:2.2rem 0 .6rem;border-bottom:2px solid var(--acc);padding-bottom:.25rem}h3{margin:1.6rem 0 .4rem}
a{color:var(--acc)}.lead{font-size:1.15rem}.meta,.note{color:var(--mut);font-size:.9rem}
.box{background:var(--soft);border-left:4px solid var(--acc);padding:.2rem 1.2rem 1rem;border-radius:6px;margin:1.2rem 0}.box h2{border:0;margin:.8rem 0 .3rem}
figure{margin:1rem 0}img{max-width:100%;height:auto}figcaption{color:var(--mut);font-size:.9rem}
.scroll{overflow-x:auto}table{border-collapse:collapse;width:100%;min-width:560px;font-size:.95rem}
th,td{border:1px solid var(--line);padding:.5rem .6rem;text-align:left;vertical-align:top}thead th{background:var(--soft)}
.btn{display:inline-block;background:var(--acc);color:#fff;padding:.55rem 1rem;border-radius:6px;text-decoration:none;font-weight:600;margin:.2rem .4rem .2rem 0}
.btn.alt{background:transparent;color:var(--acc);border:1px solid var(--acc)}
details{border:1px solid var(--line);border-radius:6px;margin:.5rem 0;padding:.2rem 1rem}summary{cursor:pointer;font-weight:600;padding:.6rem 0}
.tl{padding-left:1.2rem}footer{margin-top:3rem;border-top:1px solid var(--line);color:var(--mut);font-size:.88rem;padding:1rem 0 2rem}
:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
.imgbox{background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;justify-content:center;height:220px;padding:12px;overflow:hidden}
.imgbox img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;display:block}
.hero{display:grid;grid-template-columns:240px 1fr;gap:1.5rem;align-items:center;margin:1rem 0}
.hero .imgbox{height:200px}.hero .lead{margin:0}
@media(max-width:640px){.hero{grid-template-columns:1fr}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.2rem;margin:1rem 0 1.5rem}
.card{display:flex;flex-direction:column;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:1rem;transition:transform .15s,box-shadow .15s}
.card[hidden]{display:none}
.card:hover{transform:translateY(-3px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.card .imgbox{height:190px;margin:.6rem 0}
.card h3{margin:.2rem 0}.card h3 a{text-decoration:none;color:var(--fg)}
.card ul{padding-left:1.1rem;margin:.4rem 0;font-size:.93rem;flex:1}
.price{font-size:1.4rem;font-weight:800;color:var(--acc);margin:.2rem 0}.price small{font-size:.72rem;font-weight:400;color:var(--mut)}
.badge{align-self:flex-start;background:var(--acc);color:#fff;font-size:.75rem;font-weight:700;padding:.15rem .6rem;border-radius:99px;text-transform:uppercase;letter-spacing:.04em}
.card .cta{margin:.6rem 0 0}.card .btn{padding:.45rem .8rem;font-size:.92rem}
.chips{display:flex;flex-wrap:wrap;gap:.5rem;margin:.8rem 0}
.chips button,.chip-link{font:inherit;cursor:pointer;border:1px solid var(--acc);background:transparent;color:var(--acc);border-radius:99px;padding:.3rem 1rem}
.chips button[aria-pressed=true]{background:var(--acc);color:#fff}
.totop{position:fixed;right:1rem;bottom:1rem;width:2.6rem;height:2.6rem;border-radius:50%;border:0;background:var(--acc);color:#fff;font-size:1.2rem;cursor:pointer;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.totop[hidden]{display:none}
.carousel{position:relative;background:#0b1520;color:#fff;overflow:hidden;height:clamp(320px,46vw,500px)}
.slide{position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity .8s ease,visibility .8s}
.slide.active{opacity:1;visibility:visible}
.slide img{width:100%;height:100%;object-fit:cover}
.slide::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,16,28,.9) 0%,rgba(8,16,28,.6) 55%,rgba(8,16,28,.2) 100%)}
.slide .txt{position:absolute;z-index:2;top:50%;transform:translateY(-50%);left:max(1.2rem,calc((100% - 960px)/2 + 1rem));max-width:min(540px,80%)}
.stitle{font-size:clamp(1.6rem,4vw,2.7rem);font-weight:800;line-height:1.15;margin:0 0 .6rem}
.stext{font-size:1.1rem;margin:0 0 1.2rem;color:#dbe6f2}
.slide .btn{background:#fff;color:#0b1520}
.car-nav{position:absolute;z-index:3;top:50%;transform:translateY(-50%);width:2.6rem;height:2.6rem;border-radius:50%;border:1px solid rgba(255,255,255,.5);background:rgba(8,16,28,.55);color:#fff;font-size:1.3rem;cursor:pointer}
.car-nav:hover{background:rgba(255,255,255,.25)}.car-nav.prev{left:.6rem}.car-nav.next{right:.6rem}
.car-dots{position:absolute;z-index:3;left:0;right:0;bottom:.8rem;display:flex;justify-content:center;gap:.5rem}
.car-dots button{width:.7rem;height:.7rem;border-radius:50%;border:1px solid #fff;background:transparent;padding:0;cursor:pointer}
.car-dots button[aria-current]{background:#fff}
@media(prefers-reduced-motion:reduce){.slide{transition:none}}
.diagrams{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1rem 0 .4rem}
.diagrams figure{margin:0;background:#fff;color:#1d2733;border:1px solid var(--line);border-radius:10px;padding:.6rem}
.diagrams img{width:100%;height:auto;display:block}.diagrams figcaption{text-align:center;margin-top:.4rem;color:#1d2733;font-size:.95rem}
.legend{background:var(--soft);border-radius:8px;padding:.5rem .8rem;font-size:.92rem;margin:.4rem 0 1rem}
@media(max-width:640px){.diagrams{grid-template-columns:1fr}}
.imgbox img[hidden]{display:none}
.cnav{position:absolute;top:50%;transform:translateY(-50%);width:2rem;height:2rem;border-radius:50%;border:1px solid #c9d3de;background:rgba(255,255,255,.9);color:#1d2733;font-size:1.1rem;cursor:pointer;padding:0}
.cnav.prev{left:.3rem}.cnav.next{right:.3rem}
.swatches{display:flex;gap:.4rem;flex-wrap:wrap;justify-content:center;margin:0 0 .5rem}
.swatches button{font:inherit;font-size:.8rem;cursor:pointer;border:1px solid var(--line);background:transparent;color:var(--fg);border-radius:99px;padding:.15rem .7rem;display:inline-flex;align-items:center;gap:.35rem}
.swatches button[aria-pressed=true]{border-color:var(--acc);background:var(--acc);color:#fff}
.swatches i{display:inline-block;width:.65rem;height:.65rem;border-radius:50%;border:1px solid #888}
.imgbox{position:relative}
.car-nav{display:flex;align-items:center;justify-content:center;padding:0;line-height:1}
.slide .txt{left:max(3.8rem,calc((100% - 960px)/2 + 1rem));max-width:min(540px,calc(100% - 7.6rem))}
@media(max-width:560px){.car-nav{width:2.1rem;height:2.1rem;font-size:1.1rem}.slide .txt{left:3.2rem;max-width:calc(100% - 6.4rem)}.stext{font-size:1rem}}
.box ul{list-style:none;padding:0;margin:.4rem 0}
.box li{display:flex;align-items:center;gap:.7rem;margin:.5rem 0}
.ico{flex:none;width:1.7rem;height:1.7rem;stroke:var(--acc);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.swatches{gap:.3rem;min-height:3.1rem;align-content:flex-start}
.swatches button{font-size:.76rem;padding:.1rem .5rem;gap:.3rem}
.pick{list-style:none;padding:0;margin:.6rem 0}
.pick li{display:flex;align-items:center;gap:.7rem;margin:.6rem 0}