/* HD COOL R36 – EGYETLEN ALOLDALRA KORLÁTOZOTT STÍLUS.
   Nem módosítja a főági navigációt, fejlécet, footer-t vagy egyéb aloldalakat. */
.r4k{--ink:#08223b;--navy:#031b2d;--navy2:#073a52;--cyan:#25ddeb;--muted:#586e81;--paper:#f5f9fc;--stroke:#dce7ee;color:var(--ink);font-family:inherit;overflow:hidden;background:var(--paper)}
.r4k *, .r4k *::before,.r4k *::after{box-sizing:border-box}
.r4k a{transition:color .2s,background .2s,border-color .2s,transform .2s}
.r4k button,.r4k select,.r4k input{font:inherit}
.r4k button{cursor:pointer}
.r4k img{display:block;width:100%;height:100%;object-fit:cover}
.r4k .r4k-shell{width:min(1240px,calc(100% - 56px));margin-inline:auto}
.r4k .r4k-kicker{margin:0 0 13px;color:#047d93;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.r4k .r4k-kicker--aqua{color:#54e7f4}
.r4k h1,.r4k h2,.r4k h3,.r4k p{margin-top:0}
.r4k h1{font-size:clamp(42px,4.2vw,66px);line-height:1.06;font-weight:850;letter-spacing:-.043em}
.r4k h2{font-size:clamp(29px,2.8vw,42px);line-height:1.13;letter-spacing:-.033em;font-weight:830}
.r4k h3{font-size:clamp(19px,1.7vw,23px);line-height:1.21;letter-spacing:-.02em}
.r4k p{line-height:1.64}
.r4k .r4k-lede{color:#496579;font-size:17px;max-width:650px}
.r4k .r4k-btn{min-height:52px;padding:14px 22px;text-align:center;display:inline-flex;align-items:center;justify-content:center;gap:12px;border-radius:13px;background:#1fe1ed;color:#02253d!important;text-decoration:none;font-size:15px;font-weight:850;border:1px solid #2cf1f3;box-shadow:0 15px 34px #00c9e12b}
.r4k .r4k-btn:hover{background:#66f0f9;transform:translateY(-2px)}
.r4k .r4k-btn--ghost{color:white!important;background:transparent;border-color:#8db7c6;box-shadow:none}
.r4k .r4k-btn--ghost:hover{background:#ffffff18}
.r4k .r4k-hero{position:relative;background:#021727;color:#fff;padding:26px 0 0;isolation:isolate}
.r4k .r4k-hero::before{content:"";position:absolute;inset:0;z-index:-2;background:radial-gradient(ellipse at 8% 30%,#0b476c 0%,#061e33 55%,#021423 100%)}
.r4k .r4k-hero::after{content:"";position:absolute;inset:0 0 0 auto;width:55%;pointer-events:none;z-index:-1;background:linear-gradient(90deg,#021727 0%,transparent 50%)}
.r4k .r4k-breadcrumb{color:#adc6d6;font-size:12px;display:flex;flex-wrap:wrap;gap:9px;margin:0 0 36px}
.r4k .r4k-breadcrumb a{color:#c9e2ef;text-decoration:none}.r4k .r4k-breadcrumb a:hover{color:var(--cyan)}
.r4k .r4k-hero-grid{min-height:480px;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:2%;align-items:center;position:relative}
.r4k .r4k-hero-copy{position:relative;z-index:2;padding:18px 0 56px}
.r4k .r4k-hero h1{max-width:710px;margin-bottom:20px}
.r4k .r4k-hero h1 span{color:#2ee4ef}
.r4k .r4k-hero-lead{max-width:570px;font-size:19px;line-height:1.53;color:#dcebf4;margin:0 0 28px}
.r4k .r4k-hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.r4k .r4k-hero-note{margin-top:22px;font-size:12px;color:#a6bdcd;display:flex;align-items:center;gap:8px}
.r4k .r4k-hero-note .r4k-dot{width:7px;height:7px;border-radius:50%;background:#49dfc1}
.r4k .r4k-hero-visual{position:relative;height:475px;align-self:stretch;min-width:0;margin:0;margin-right:-max(0px,calc((100vw - 1240px)/2));overflow:hidden}
.r4k .r4k-hero-visual img{object-position:65% center}
.r4k .r4k-hero-visual::before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,#021727 1%,#0217275d 17%,transparent 48%),linear-gradient(0deg,#021727 0%,transparent 25%)}
.r4k .r4k-photo-label{position:absolute;bottom:23px;right:20px;z-index:2;background:#082235b8;color:#d7e7f1;border:1px solid #ffffff42;padding:7px 11px;font-size:11px;letter-spacing:.03em;border-radius:100px;backdrop-filter:blur(8px)}
.r4k .r4k-hero-strip{border-top:1px solid #ffffff2b;background:#05263d}
.r4k .r4k-feature-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}
.r4k .r4k-feature{display:flex;align-items:center;gap:12px;padding:22px 20px;min-width:0;border-right:1px solid #ffffff1d}.r4k .r4k-feature:first-child{padding-left:0}.r4k .r4k-feature:last-child{border:0;padding-right:0}
.r4k .r4k-feature strong{display:block;color:#fff;font-size:14px;line-height:1.27}.r4k .r4k-feature small{display:block;color:#a9c1cf;font-size:12px;line-height:1.32;margin-top:4px}
.r4k .r4k-feature-symbol{display:grid;flex:none;place-items:center;width:45px;height:45px;border:1px solid #42dfea76;border-radius:12px;color:#46e8f0;font-size:20px;font-weight:900}
.r4k .r4k-inpage{background:#fff;border-bottom:1px solid var(--stroke)}
.r4k .r4k-jump{min-height:58px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.r4k .r4k-jump b{font-size:11px;letter-spacing:.09em;color:#7890a3}
.r4k .r4k-jump a{text-decoration:none;color:#244963;font-size:13px;font-weight:700;padding:14px 0}.r4k .r4k-jump a:hover{color:#008c9b}
.r4k .r4k-section{padding:86px 0}.r4k .r4k-section--tint{background:#eaf3f8}.r4k .r4k-section--white{background:#fff}
.r4k .r4k-section-intro{max-width:770px;margin-bottom:32px}.r4k .r4k-section-intro h2{margin-bottom:17px}
.r4k .r4k-compare-wrap{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(300px,.8fr);gap:30px;align-items:stretch}
.r4k .r4k-camera-view{position:relative;min-height:460px;border:1px solid #9fbece;box-shadow:0 20px 50px #183d571c;border-radius:22px;overflow:hidden;background:#011e30}
.r4k .r4k-camera-view img{position:absolute;inset:0;transition:filter .3s,transform .4s;object-position:center}
.r4k .r4k-camera-view[data-mode="ir"] img{filter:grayscale(1) contrast(1.17) brightness(.91)}
.r4k .r4k-camera-view[data-mode="color"] img{filter:saturate(.9) brightness(.85)}
.r4k .r4k-camera-view[data-mode="smart"] img{filter:saturate(1.14) brightness(1.04)}
.r4k .r4k-camera-view::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,#031b2bdd,transparent 34%,transparent 68%,#061d2ba5);pointer-events:none}
.r4k .r4k-camera-overlay{position:absolute;inset:17px 17px auto;display:flex;justify-content:space-between;align-items:center;z-index:2;gap:12px}
.r4k .r4k-cam-live,.r4k .r4k-cam-res{background:#051e2cba;border:1px solid #d5f8ff4f;border-radius:8px;padding:6px 10px;color:#fff;font-size:11px;font-weight:800;letter-spacing:.04em;backdrop-filter:blur(5px)}
.r4k .r4k-cam-live::before{content:"";display:inline-block;background:#31e7cf;width:7px;height:7px;border-radius:50%;margin-right:7px}
.r4k .r4k-camera-overlay--bottom{top:auto;bottom:18px;align-items:flex-end}
.r4k .r4k-sim-note{font-size:11px;font-weight:600;color:#eaf7fa;max-width:450px;line-height:1.45}
.r4k .r4k-mode-card{background:#fff;border:1px solid #d5e5ed;border-radius:22px;padding:26px;box-shadow:0 16px 48px #173f5a0e}
.r4k .r4k-mode-card h3{margin-bottom:12px}.r4k .r4k-mode-card>p{color:#536d7c;font-size:14px}
.r4k .r4k-modes{display:grid;gap:10px;margin:26px 0}
.r4k .r4k-mode{width:100%;text-align:left;border:1px solid #dbe8ee;background:#f7fbfd;padding:14px;border-radius:13px;display:flex;gap:13px;align-items:flex-start;color:#183f55}
.r4k .r4k-mode:hover{border-color:#27bfcf}.r4k .r4k-mode[aria-pressed="true"]{border:2px solid #00bfd0;background:#e8fcff;padding:13px;box-shadow:0 5px 20px #10c4d21c}
.r4k .r4k-mode-icon{flex:none;font-size:20px;line-height:1.3}.r4k .r4k-mode strong{display:block;font-size:14px}.r4k .r4k-mode small{display:block;color:#577484;line-height:1.4;margin-top:3px}
.r4k .r4k-mode-explain{background:#062d42;border-radius:13px;color:#fff;padding:17px 18px;min-height:98px}
.r4k .r4k-mode-explain strong{color:#6df5ff}.r4k .r4k-mode-explain p{font-size:13px;line-height:1.58;margin:6px 0 0;color:#d7e4ec}
.r4k .r4k-2col{display:grid;grid-template-columns:minmax(0,.92fr) minmax(0,1.08fr);gap:52px;align-items:center}
.r4k .r4k-mega-stat{display:flex;gap:15px;align-items:center;margin:21px 0;padding:19px 20px;background:#e9f8fb;border-left:4px solid #21bfd1;border-radius:0 12px 12px 0}
.r4k .r4k-mega-stat strong{font-size:31px;line-height:1;color:#064459;white-space:nowrap}.r4k .r4k-mega-stat span{font-size:14px;color:#34596c;line-height:1.5}
.r4k .r4k-mini-list{display:grid;gap:14px;margin:28px 0 24px;padding:0;list-style:none}
.r4k .r4k-mini-list li{display:flex;align-items:flex-start;gap:11px;font-size:15px;color:#365567;line-height:1.5}
.r4k .r4k-mini-list li::before{content:'✓';color:#008b9f;font-weight:900;line-height:1.35}
.r4k .r4k-calc{background:#061d30;color:#fff;border:1px solid #0c6680;border-radius:22px;box-shadow:0 27px 65px #0223372c;overflow:hidden}
.r4k .r4k-calc-head{padding:24px 26px 20px;display:flex;justify-content:space-between;gap:15px;border-bottom:1px solid #ffffff25}
.r4k .r4k-calc-head h3{color:#fff;margin-bottom:8px}.r4k .r4k-calc-head p{font-size:13px;color:#b9d2e0;margin:0}.r4k .r4k-calc-tag{font-size:10px;letter-spacing:.1em;font-weight:800;color:#69f1e8;border:1px solid #48d8e170;padding:6px 9px;border-radius:7px;height:max-content;white-space:nowrap}
.r4k .r4k-calc-controls{padding:24px 26px 0;display:grid;gap:24px}
.r4k .r4k-calc-label{display:flex;justify-content:space-between;gap:14px;align-items:center;margin:0 0 12px;color:#ddf1f7;font-size:14px;font-weight:700}
.r4k .r4k-calc strong.r4k-value{color:#60ebf5;font-size:19px;white-space:nowrap}
.r4k input[type="range"]{width:100%;accent-color:#43e0e8;cursor:pointer}
.r4k .r4k-res-options{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.r4k .r4k-res-options label{position:relative;cursor:pointer;background:#15374b;border:1px solid #3e6372;border-radius:10px;text-align:center;padding:12px 6px;color:#e6f5f8;font-size:12px;font-weight:700}
.r4k .r4k-res-options label:has(input:checked){background:#16d5df;color:#021c2c;border-color:#16d5df}
.r4k .r4k-res-options input{position:absolute;opacity:0;inset:0;width:100%;height:100%;margin:0;cursor:pointer}
.r4k .r4k-res-options input:focus-visible{outline:3px solid white;outline-offset:3px}
.r4k .r4k-calculated{margin-top:26px;background:linear-gradient(110deg,#066075,#07445d);padding:23px 26px;display:grid;grid-template-columns:1fr auto;gap:13px;align-items:end}
.r4k .r4k-calculated small{display:block;color:#beebf1;font-weight:700;font-size:12px;margin-bottom:5px}
.r4k .r4k-calculated strong{font-size:clamp(34px,4vw,51px);font-variant-numeric:tabular-nums;line-height:1;color:#fff}.r4k .r4k-calculated strong span{font-size:16px;color:#c8faff}
.r4k .r4k-calculated p{font-size:12px;max-width:160px;text-align:right;line-height:1.4;margin:0;color:#cef0f6}
.r4k .r4k-scale{padding:17px 26px 26px}
.r4k .r4k-scale-heading{display:flex;justify-content:space-between;gap:8px;color:#b8d2dc;font-size:11px;margin-bottom:9px}
.r4k .r4k-scale-track{height:10px;background:linear-gradient(90deg,#385367 0%,#2499a9 35%,#3ee2dc 70%,#d7faff);border-radius:50px;position:relative}
.r4k .r4k-scale-marker{position:absolute;top:-5px;bottom:-5px;width:3px;background:#fff;border-radius:4px;box-shadow:0 0 0 3px #01273a;left:30%;transition:left .2s}
.r4k .r4k-scale-note{color:#b3cbd5;font-size:11px;line-height:1.55;margin:12px 0 0}
.r4k .r4k-grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.r4k .r4k-usecase{background:#fff;border:1px solid #d5e7ee;border-radius:19px;padding:26px 25px 22px;position:relative;min-height:220px;display:flex;flex-direction:column}
.r4k .r4k-usecase .r4k-index{color:#03a6ba;letter-spacing:.12em;font-size:11px;font-weight:900;margin-bottom:30px}
.r4k .r4k-usecase h3{margin:0 0 13px}.r4k .r4k-usecase p{font-size:14px;color:#5c7281;margin:0 0 20px}
.r4k .r4k-usecase a{font-weight:800;color:#026e83;font-size:13px;text-decoration:none;margin-top:auto}.r4k .r4k-usecase a:hover{text-decoration:underline}
.r4k .r4k-usecase::before{content:"";position:absolute;width:75px;height:75px;border-radius:50%;right:18px;top:18px;background:radial-gradient(circle,#bff1f7,transparent 67%)}
.r4k .r4k-tech{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.r4k .r4k-tech-photo{height:420px;position:relative;overflow:hidden;border-radius:20px;box-shadow:0 24px 50px #17425c22}
.r4k .r4k-tech-photo img{object-position:50% 50%}
.r4k .r4k-tech-photo .r4k-photo-label{bottom:16px}
.r4k .r4k-tech-checks{display:grid;gap:12px;margin-top:24px}
.r4k .r4k-tech-check{display:flex;align-items:start;gap:13px;background:#fff;border:1px solid #d8e7ed;border-radius:12px;padding:14px 16px}
.r4k .r4k-tech-check b{background:#d9f9fb;color:#037a88;border-radius:8px;padding:3px 8px;font-size:12px}
.r4k .r4k-tech-check strong{display:block;font-size:15px}.r4k .r4k-tech-check span{display:block;color:#5d7582;font-size:13px;line-height:1.45;margin-top:3px}
.r4k .r4k-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}
.r4k .r4k-step{counter-increment:step;background:#092d42;border:1px solid #1f586e;border-radius:17px;padding:25px;color:#fff}
.r4k .r4k-step::before{content:counter(step,decimal-leading-zero);display:block;color:#59e6ee;font-size:13px;letter-spacing:.16em;font-weight:900;margin-bottom:26px}
.r4k .r4k-step h3{color:#fff;font-size:18px}.r4k .r4k-step p{font-size:13px;color:#bbd4de;line-height:1.6;margin:0}
.r4k .r4k-compact-head{margin-bottom:26px}
.r4k .r4k-faq-list{border-top:1px solid #dce7ed;display:grid;grid-template-columns:1fr 1fr;column-gap:50px}
.r4k .r4k-faq-list details{border-bottom:1px solid #dce7ed;padding:22px 0;align-self:start}
.r4k .r4k-faq-list summary{font-weight:800;font-size:16px;cursor:pointer;line-height:1.5;color:#123b55;list-style:none;display:flex;justify-content:space-between;gap:15px}
.r4k .r4k-faq-list summary::-webkit-details-marker{display:none}.r4k .r4k-faq-list summary::after{content:'+';font-size:23px;color:#009aac;font-weight:500;line-height:1}.r4k .r4k-faq-list details[open] summary::after{content:'−'}
.r4k .r4k-faq-list p{margin:14px 0 0;color:#55707d;font-size:14px;line-height:1.7}
.r4k .r4k-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:33px}.r4k .r4k-related a{background:#eef8fb;border:1px solid #d2e9ef;color:#1b586d;font-size:13px;font-weight:800;padding:11px 14px;border-radius:10px;text-decoration:none}.r4k .r4k-related a:hover{background:#d7f8fc}
.r4k .r4k-cta{background:#052539;color:#fff;padding:60px 0 66px;position:relative;overflow:hidden}
.r4k .r4k-cta::after{content:"";pointer-events:none;position:absolute;inset:0;background:radial-gradient(circle at 95% 20%,#12b0cc47,transparent 40%)}
.r4k .r4k-cta-inner{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:44px;align-items:center;position:relative;z-index:1}
.r4k .r4k-cta h2{color:#fff;font-size:clamp(30px,3vw,45px);margin:0 0 16px}.r4k .r4k-cta p{color:#c8dfea;margin-bottom:0;font-size:16px;max-width:610px}
.r4k .r4k-cta-actions{display:flex;flex-direction:column;gap:12px}.r4k .r4k-cta-actions a{min-width:260px}
.r4k .r4k-legalnote{background:#f0f5f8;padding:17px 0;border-top:1px solid #dce7ee}
.r4k .r4k-legalnote p{font-size:12px;color:#708392;line-height:1.65;margin:0}.r4k .r4k-legalnote a{color:#267991}
@media(max-width:1100px){.r4k .r4k-hero-grid{min-height:430px}.r4k .r4k-hero-visual{height:440px;margin-right:-28px}.r4k .r4k-compare-wrap{grid-template-columns:1fr 1fr}.r4k .r4k-feature{padding:16px 11px;gap:8px}.r4k .r4k-feature-symbol{width:36px;height:36px;font-size:16px}.r4k .r4k-feature strong{font-size:12px}.r4k .r4k-feature small{font-size:11px}}
@media(max-width:850px){.r4k .r4k-shell{width:min(100% - 36px,720px)}.r4k .r4k-hero-grid{grid-template-columns:1fr;gap:0}.r4k .r4k-hero-copy{padding:4px 0 25px}.r4k .r4k-hero-visual{height:290px;margin:0 -18px}.r4k .r4k-hero-visual::before{background:linear-gradient(0deg,#02172780 0%,transparent 45%)}.r4k .r4k-breadcrumb{margin-bottom:27px}.r4k .r4k-feature-row{grid-template-columns:1fr 1fr}.r4k .r4k-feature{padding:18px 16px;border-bottom:1px solid #ffffff20}.r4k .r4k-feature:nth-child(2){border-right:0}.r4k .r4k-feature:nth-child(3){border-bottom:0}.r4k .r4k-section{padding:65px 0}.r4k .r4k-2col,.r4k .r4k-tech{grid-template-columns:1fr;gap:30px}.r4k .r4k-compare-wrap{grid-template-columns:1fr}.r4k .r4k-camera-view{min-height:390px}.r4k .r4k-grid3{grid-template-columns:1fr 1fr}.r4k .r4k-usecase:last-child{grid-column:1/-1}.r4k .r4k-steps{grid-template-columns:1fr 1fr}.r4k .r4k-cta-inner{grid-template-columns:1fr;gap:25px}.r4k .r4k-cta-actions{flex-direction:row;flex-wrap:wrap}.r4k .r4k-cta-actions a{min-width:0}.r4k .r4k-tech-photo{height:380px}}
@media(max-width:520px){.r4k .r4k-shell{width:calc(100% - 32px)}.r4k h1{font-size:clamp(37px,10vw,48px)}.r4k h2{font-size:clamp(29px,8vw,34px)}.r4k .r4k-hero{padding-top:18px}.r4k .r4k-hero-lead{font-size:16px}.r4k .r4k-hero-actions{display:grid;grid-template-columns:1fr}.r4k .r4k-hero-visual{height:250px;margin-inline:-16px}.r4k .r4k-hero-visual img{object-position:63% center}.r4k .r4k-hero-note{font-size:11px}.r4k .r4k-feature-row{gap:0}.r4k .r4k-feature{align-items:flex-start;padding:16px 10px}.r4k .r4k-feature:first-child{padding-left:0}.r4k .r4k-feature:nth-child(3){padding-left:0}.r4k .r4k-feature-symbol{width:32px;height:32px;font-size:13px}.r4k .r4k-feature strong{font-size:12px}.r4k .r4k-feature small{font-size:10px}.r4k .r4k-jump{gap:14px;padding:6px 0}.r4k .r4k-jump b{display:none}.r4k .r4k-jump a{font-size:12px;padding:7px 0}.r4k .r4k-section{padding:55px 0}.r4k .r4k-camera-view{min-height:305px}.r4k .r4k-camera-overlay{inset:12px 12px auto}.r4k .r4k-camera-overlay--bottom{top:auto;bottom:12px}.r4k .r4k-cam-res{font-size:10px}.r4k .r4k-sim-note{font-size:10px}.r4k .r4k-mode-card,.r4k .r4k-calc-controls{padding:21px}.r4k .r4k-calc-head{padding:23px 20px}.r4k .r4k-calculated{padding:20px}.r4k .r4k-scale{padding:18px 20px 23px}.r4k .r4k-calc-tag{display:none}.r4k .r4k-mega-stat{align-items:start;flex-direction:column;gap:7px}.r4k .r4k-grid3,.r4k .r4k-steps,.r4k .r4k-faq-list{grid-template-columns:1fr}.r4k .r4k-usecase:last-child{grid-column:auto}.r4k .r4k-usecase{min-height:0}.r4k .r4k-step{padding:20px}.r4k .r4k-step::before{margin-bottom:10px}.r4k .r4k-tech-photo{height:275px}.r4k .r4k-cta{padding:49px 0 90px}.r4k .r4k-cta-actions{flex-direction:column}.r4k .r4k-cta-actions .r4k-btn{width:100%}}
@media(prefers-reduced-motion:reduce){.r4k *,.r4k *::before,.r4k *::after{transition:none!important;scroll-behavior:auto!important}}