/* Kelvane Roofing (concept) — a fixed 3D scene behind the page; each step section builds one roof layer */
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(../fonts/space-grotesk-latin-wght-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(../fonts/space-grotesk-latin-ext-wght-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(../fonts/inter-tight-cyrillic-wght-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:'Inter Tight';font-style:normal;font-weight:100 900;font-display:swap;src:url(../fonts/inter-tight-latin-wght-normal.woff2) format('woff2');unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:'Inter Tight';font-style:normal;font-weight:100 900;font-display:swap;src:url(../fonts/inter-tight-latin-ext-wght-normal.woff2) format('woff2');unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:'Inter Tight';font-style:normal;font-weight:100 900;font-display:swap;src:url(../fonts/inter-tight-cyrillic-wght-normal.woff2) format('woff2');unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
:root{
  --ink:#0B0D11;
  --card:rgba(11,13,17,.74);
  --line:rgba(255,255,255,.14);
  --fg:#F4F2EE;
  --muted:#B4B8C2;
  --hot:#74C21E;
  --f-d:'Space Grotesk',ui-sans-serif,system-ui,'Segoe UI',Arial,sans-serif;
  --f-b:'Inter Tight',ui-sans-serif,system-ui,'Segoe UI',Arial,sans-serif;
  --gut:max(16px,env(safe-area-inset-left,0px));
  --gut-r:max(16px,env(safe-area-inset-right,0px));
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--ink);color:var(--fg);font-family:var(--f-b);font-size:1.0625rem;line-height:1.6;overflow-x:hidden}
a{color:inherit}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--hot);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:16px;top:-60px;z-index:50;background:var(--fg);color:var(--ink);padding:10px 16px;border-radius:10px}
.skip:focus{top:12px}

/* scene layers */
#scene{position:fixed;inset:0;width:100%;height:100%;display:block;z-index:0;touch-action:pan-y;cursor:grab}
#scene.drag{cursor:grabbing}
.sky-fallback{position:fixed;inset:0;z-index:-1;background:linear-gradient(#9CC3E6,#E9EEF2)}
.labels{position:fixed;inset:0;z-index:1;pointer-events:none}
.labels span{position:absolute;left:0;top:0;font-family:var(--f-d);font-size:.78rem;font-weight:600;letter-spacing:.02em;white-space:nowrap;padding:5px 10px;border-radius:999px;background:rgba(11,13,17,.82);border:1px solid var(--line);opacity:0;transition:opacity .3s}
.labels.on span{opacity:1}

.ribbon{position:relative;z-index:6;margin:0;padding:8px var(--gut-r) 8px var(--gut);text-align:center;font-size:.8rem;background:var(--hot);color:#0E1406;font-weight:600}

/* nav */
.nav{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px var(--gut-r) 14px var(--gut);pointer-events:none}
.nav>*{pointer-events:auto}
.nav-bar{position:relative;display:flex;align-items:center;gap:4px;padding:6px;background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-radius:14px;border:1px solid var(--line)}
.nav-bar ul{list-style:none;margin:0;padding:0}
.nav-links{display:flex;gap:2px}
.nav-bar a{display:flex;align-items:center;gap:7px;min-height:40px;text-decoration:none;font-weight:600;font-size:.92rem;line-height:1;padding:0 12px;border-radius:10px;white-space:nowrap}
.nav-bar a:hover,.menu summary:hover{background:rgba(255,255,255,.08)}
.nav-links a[aria-current="page"],.menu-list a[aria-current="page"]{background:rgba(255,255,255,.1)}
.nav-icon svg{width:18px;height:18px;flex:none}
.nav-bar .nav-wa{color:#25D366}
.nav-bar .nav-cta{background:var(--hot);color:#0E1406;margin-left:2px}
.nav-bar .nav-cta:hover{background:#8AD936}
.menu{display:none}
.menu summary{list-style:none;display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:10px;cursor:pointer}
.menu summary::-webkit-details-marker{display:none}
.burger{display:grid;gap:4px;width:18px}
.burger i{display:block;height:2px;border-radius:2px;background:var(--fg);transition:transform .2s,opacity .2s}
.menu[open] .burger i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu[open] .burger i:nth-child(2){opacity:0}
.menu[open] .burger i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.menu-list{position:absolute;right:0;top:calc(100% + 8px);min-width:240px;display:grid;gap:2px;padding:8px!important;background:#12151B;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 40px rgba(0,0,0,.45)}
.menu-list a{min-height:46px;font-size:1rem}
.menu-list .menu-cta{justify-content:center;margin-top:6px;background:var(--hot);color:#0E1406}
@media (max-width:1399px){.nav-bar .lbl{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.nav-bar .nav-icon{justify-content:center;min-width:40px;padding:0 10px}}
@media (max-width:1099px){.nav-links{display:none}.menu{display:block}}
@media (max-width:480px){.nav{gap:8px}.nav-bar .nav-cta{padding:0 10px;font-size:.86rem}.nav-bar .nav-icon{min-width:36px;padding:0 8px}.menu summary{width:36px}.logo{padding:10px 10px}.logo img{height:18px}}
@media (max-width:359px){.nav-bar .nav-cta{display:none}}
.logo{display:inline-flex;align-items:center;text-decoration:none;background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);padding:12px 16px;border-radius:14px;border:1px solid var(--line)}
.logo img{display:block;height:26px;width:auto}
@media (max-width:420px){.logo img{height:20px}}
.logo svg{width:34px;height:24px;color:var(--fg)}
.logo-m{fill:var(--hot)}
.logo span{font-family:var(--f-d);font-weight:700;font-size:1.05rem;line-height:1;display:grid}
.logo small{font-size:.62rem;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--muted);margin-top:3px}

/* hud */
.hud{position:fixed;z-index:4;right:var(--gut-r);bottom:calc(16px + env(safe-area-inset-bottom,0px));width:210px;background:var(--card);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:16px;padding:12px 14px;display:grid;gap:6px}
.hud p{margin:0}
.hud-time{display:flex;align-items:center;justify-content:space-between;font-family:var(--f-d);font-size:1.6rem;font-weight:700;font-variant-numeric:tabular-nums;line-height:1}
.hud-sun{width:22px;height:22px;border-radius:50%;background:#FFD27A;box-shadow:0 0 14px 2px rgba(255,200,110,.7)}
.hud-sun.moon{background:#DDE3F0;box-shadow:0 0 10px 1px rgba(200,215,255,.5)}
.hud-step{font-size:.85rem;color:var(--muted)}
.hud-bar{height:4px;border-radius:2px;background:rgba(255,255,255,.12);overflow:hidden}
.hud-bar span{display:block;height:100%;width:100%;background:var(--hot);transform-origin:left;transform:scaleX(0)}
.hud-btn{margin-top:4px;border:1px solid var(--line);background:rgba(255,255,255,.06);border-radius:10px;padding:8px 10px;font-weight:600;font-size:.88rem;cursor:pointer}
.hud-btn:hover{background:rgba(255,255,255,.12)}
.hud-btn[aria-pressed="true"]{background:var(--fg);color:var(--ink);border-color:var(--fg)}
@media (max-width:700px){.hud{left:var(--gut);right:var(--gut-r);width:auto;grid-template-columns:auto 1fr auto;align-items:center;gap:4px 12px;padding:10px 12px}.hud-time{font-size:1.15rem;gap:8px}.hud-sun{width:16px;height:16px}.hud-step{font-size:.8rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hud-bar{grid-column:1/-1;order:5}.hud-btn{margin:0;padding:6px 10px;font-size:.8rem}}

/* content */
main,.foot{position:relative;z-index:2;pointer-events:none}
.card,main.doc{pointer-events:auto}
.step{min-height:100vh;min-height:100svh;display:flex;align-items:center;padding:40px var(--gut-r) 40px var(--gut)}
.step .card{max-width:440px}
.card{background:rgba(11,13,17,.56);backdrop-filter:blur(16px) saturate(1.1);-webkit-backdrop-filter:blur(16px) saturate(1.1);border:1px solid var(--line);border-radius:22px;padding:clamp(20px,3vw,32px)}
.card.wide{max-width:1040px;margin-inline:auto}
.card p{margin:0 0 12px}.card p:last-child{margin-bottom:0}
.eyebrow,.num{font-family:var(--f-d);font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--hot);margin:0 0 10px}
h1,h2{font-family:var(--f-d);font-weight:700;letter-spacing:-.03em;line-height:1.02;margin:0 0 14px}
h1{font-size:clamp(2.4rem,6vw,4.6rem)}
h1 em{font-style:normal;color:var(--hot)}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem)}
.lead{font-size:1.15rem;color:#DCDFE6}
.aside{font-size:.92rem;color:var(--muted)}
.hero{min-height:calc(100vh - 110px);min-height:calc(100svh - 110px)}
.hero .card{max-width:540px}
.cta{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px!important}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;border-radius:12px;font-weight:700;text-decoration:none;border:1.5px solid transparent;cursor:pointer}
.btn-main{background:var(--hot);color:#0E1406}
.btn-main:hover{background:#8AD936}
.btn-line{border-color:var(--line);background:rgba(255,255,255,.04)}
.btn-line:hover{border-color:var(--fg)}
.hint{display:flex;align-items:center;gap:10px;font-size:.85rem;color:var(--muted);margin-top:18px!important}
.mouse{width:18px;height:28px;border:2px solid var(--muted);border-radius:10px;position:relative;flex:none}
.mouse::after{content:"";position:absolute;left:50%;top:5px;width:2px;height:6px;margin-left:-1px;border-radius:1px;background:var(--fg);animation:wheel 1.6s infinite}
@keyframes wheel{0%{transform:translateY(0);opacity:1}100%{transform:translateY(9px);opacity:0}}

.sec{padding:16vh var(--gut-r) 6vh var(--gut)}
.facts{list-style:none;margin:20px 0 0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:12px}
.facts li{border:1px solid var(--line);border-radius:16px;padding:16px;display:grid;gap:6px}
.facts b{font-family:var(--f-d);font-size:1.05rem}
.facts span{color:var(--muted);font-size:.95rem;line-height:1.5}

.quote{display:grid;gap:18px;margin-top:20px}
.q-step{border:1px solid var(--line);border-radius:16px;padding:16px;margin:0;min-width:0}
legend{font-family:var(--f-d);font-weight:700;padding:0 6px}
.opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:6px}
.opts label{position:relative;cursor:pointer}
.opts input{position:absolute;opacity:0;inset:0}
.opts span{display:block;padding:10px 16px;border-radius:999px;border:1.5px solid var(--line);font-weight:600}
.opts input:checked+span{background:var(--fg);color:var(--ink);border-color:var(--fg)}
.opts input:focus-visible+span{outline:3px solid var(--hot);outline-offset:2px}
.range{display:flex;align-items:center;gap:14px;margin-top:8px}
.range input{flex:1;accent-color:var(--hot);min-width:0}
.range output{font-family:var(--f-d);font-weight:700;min-width:7.5ch;text-align:right}
.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px;margin-top:6px}
.field{display:grid;gap:6px;font-weight:600;font-size:.92rem}
.field input{min-height:48px;border-radius:12px;border:1.5px solid var(--line);background:rgba(255,255,255,.05);padding:10px 14px;font-weight:400;font-size:1rem}
.field input:focus{border-color:var(--hot);outline:none}
.err{color:#FFB08A;font-size:.92rem;margin:8px 0 0!important}
.done{border-left:3px solid var(--hot);padding:4px 0 4px 12px;margin:0!important}

.foot{padding:20vh var(--gut-r) calc(150px + env(safe-area-inset-bottom,0px)) var(--gut);min-height:100vh;display:flex;align-items:flex-end}
.foot .card{width:100%;max-width:560px;margin:0}
.foot-big{font-family:var(--f-d);font-weight:700;font-size:clamp(2rem,6vw,4.4rem);letter-spacing:-.04em;line-height:1;margin:0 0 16px!important}
.foot-big span{color:var(--hot)}
.foot-row{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 20px;color:var(--muted);font-size:.92rem;margin:0!important}
.powered{font-family:var(--f-d);font-weight:600;letter-spacing:.02em;color:var(--fg)}
.nojs{position:relative;z-index:3;text-align:center;padding:12px}

@media (max-width:700px){
  .step{align-items:flex-end;padding-bottom:120px}
  .hero{align-items:flex-end}
  .step .card{max-width:none}
  .card{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}
h1 .eyebrow{display:block;letter-spacing:.14em;line-height:1.4}
.faq{display:grid;gap:10px;margin-top:18px}
.faq details{border:1px solid var(--line);border-radius:14px;padding:0 16px}
.faq summary{cursor:pointer;list-style:none;font-family:var(--f-d);font-weight:600;font-size:1.02rem;min-height:52px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--hot);font-size:1.4rem;line-height:1}
.faq details[open] summary::after{content:"−"}
.faq details p{color:var(--muted);margin:0 0 16px!important;line-height:1.55}
.faq summary:focus-visible{outline:2px solid var(--hot);outline-offset:4px;border-radius:6px}
.q-note,.q-alt{font-size:.88rem;color:var(--muted);margin:12px 0 0!important;line-height:1.5}
.q-note a,.q-alt a,.foot-legal a{color:var(--fg)}
.foot .card{max-width:640px}
.foot-legal{font-style:normal;color:var(--muted);font-size:.8rem;line-height:1.7;margin-top:14px}
/* legal / 404 pages: plain scrolling document, no 3D */
.doc{max-width:760px;margin:0 auto;padding:110px var(--gut) 80px}
.doc h1{font-size:clamp(2rem,5vw,3rem)}
.doc h2{font-size:1.3rem;margin:32px 0 10px}
.doc p,.doc li{color:var(--muted);line-height:1.65}
.doc a{color:var(--fg)}
.doc .foot-row{margin-top:48px!important;border-top:1px solid var(--line);padding-top:20px}
.foot-links{display:flex;gap:18px;flex-wrap:wrap;font-size:.86rem;margin:14px 0 0!important}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:var(--fg)}
.legal-card{border:1px solid var(--line);border-radius:18px;padding:20px 22px;margin:20px 0}
.legal-card dl{display:grid;grid-template-columns:max-content 1fr;gap:8px 18px;margin:0}
.legal-card dt{color:var(--muted)}
.legal-card dd{margin:0}
.big-contacts{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0}

/* tech pages: systems, details, materials */
.doc-wide{max-width:1180px}
.doc .lead{font-size:1.15rem;color:var(--fg);max-width:760px}
.doc h1 em{font-style:normal;color:var(--hot)}
.doc-wide>h2,.doc-wide section>h2{font-size:clamp(1.5rem,2.6vw,2rem);margin:48px 0 12px}
.doc h3{font-family:var(--f-d);font-size:1.05rem;margin:18px 0 8px}
.chips ul{list-style:none;margin:22px 0 8px;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.chips a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-weight:600;font-size:.9rem;background:rgba(255,255,255,.03)}
.chips a:hover{border-color:var(--hot);color:var(--hot)}
.tbl{overflow-x:auto;margin:14px 0;border:1px solid var(--line);border-radius:14px}
.tbl table{border-collapse:collapse;width:100%;font-size:.95rem}
.tbl table:has(th:nth-child(3)){min-width:560px}
.tbl th,.tbl td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font-family:var(--f-d);color:var(--fg);background:rgba(255,255,255,.04)}
.tbl td{color:var(--muted)}.tbl td:first-child{color:var(--fg)}.tbl tr:last-child td{border-bottom:0}
.sys{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:8px 36px;margin:40px 0;padding:clamp(18px,3vw,32px);border:1px solid var(--line);border-radius:22px;background:rgba(255,255,255,.025);scroll-margin-top:90px}
.sys-head{grid-column:1/-1}.sys-head h2{margin:0 0 8px}
.axo{margin:0}.axo-svg{display:block;width:100%;height:auto}
.axo-n{font:700 13px var(--f-d);fill:#f4f2ee}
.axo .ly{transition:transform .9s cubic-bezier(.2,.8,.2,1)}
.axo figcaption{display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;margin-top:10px;font-size:.88rem;color:var(--muted)}
.axo-btn{min-height:44px;padding:8px 16px;font-size:.92rem}
.legend{margin:0;padding-left:0;list-style:none;counter-reset:l}
.legend li{counter-increment:l;position:relative;padding:6px 0 6px 40px;border-bottom:1px solid var(--line);font-size:.95rem}
.legend li::before{content:counter(l);position:absolute;left:0;top:6px;width:26px;height:26px;border-radius:50%;border:2px solid var(--hot);display:grid;place-items:center;font:700 .8rem var(--f-d);color:var(--fg)}
.legend b{color:var(--fg);font-weight:600}
.rules{padding-left:20px;margin:0}.rules li{margin:6px 0}.rules li::marker{color:var(--hot)}
.sys-note{border-left:3px solid var(--hot);padding:6px 0 6px 14px;margin:16px 0}
.sys-links{font-size:.92rem}.sys-links a{color:var(--hot)}
.det{margin:48px 0;scroll-margin-top:90px}.det h2{margin:0 0 8px}
.fig{margin:16px 0;padding:clamp(10px,2vw,20px);border:1px solid var(--line);border-radius:18px;background:#0e1116}
.fig-svg{display:block;width:100%;height:auto}
.f-dim{font:600 12.5px var(--f-b);fill:#e9ecf0}.f-lab{font:500 12.5px var(--f-b);fill:#b4b8c2}
.fig .dr{stroke-dasharray:1;stroke-dashoffset:0;transition:stroke-dashoffset 1.6s ease}
.fig .fi,.fig .dm,.fig .lb{transition:opacity .8s ease}
.fig .fi{transition-delay:.5s}.fig .dm{transition-delay:1.3s}.fig .lb{transition-delay:1.7s}
.js .fig:not(.in) .dr{stroke-dashoffset:1}
.js .fig:not(.in) .fi,.js .fig:not(.in) .dm,.js .fig:not(.in) .lb{opacity:0}
.key{list-style:none;padding:0;margin:18px 0;display:flex;flex-wrap:wrap;gap:8px 20px;font-size:.88rem;color:var(--muted)}
.key li{display:flex;align-items:center;gap:8px}.key i{width:22px;height:5px;border-radius:3px}
.k-mem{background:#f4f2ee}.k-tape{background:#74c21e}.k-seal{background:#e8572a}.k-met{background:#9fb7cf}
.mat{list-style:none;padding:0;margin:14px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.mat li{border:1px solid var(--line);border-radius:14px;padding:14px 16px;display:grid;gap:4px;background:rgba(255,255,255,.025)}
.mat b{font-family:var(--f-d);color:var(--fg)}.mat span{color:var(--muted);font-size:.93rem;line-height:1.5}
.doc-wide section[id]{scroll-margin-top:90px}
.next{margin:56px 0 0;padding:24px;border:1px solid var(--line);border-radius:22px;background:rgba(116,194,30,.06)}
.next p{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.next .btn{color:inherit}.next .btn-main{color:#0E1406}
.explore{list-style:none;padding:0;margin:18px 0 0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}
.explore a{display:grid;gap:6px;height:100%;padding:18px;border:1px solid var(--line);border-radius:16px;text-decoration:none;background:rgba(255,255,255,.03)}
.explore a:hover{border-color:var(--hot)}.explore b{font-family:var(--f-d);font-size:1.1rem}.explore span{color:var(--muted);font-size:.93rem;line-height:1.5}
@media (max-width:900px){.sys{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){.axo .ly,.fig .dr,.fig .fi,.fig .dm,.fig .lb{transition:none}}
.js .axo:not(.ex) .ly{transform:none}
.axo .k1{transform:translateY(-22px);transition-delay:0.06s}
.axo .k2{transform:translateY(-44px);transition-delay:0.12s}
.axo .k3{transform:translateY(-66px);transition-delay:0.18s}
.axo .k4{transform:translateY(-88px);transition-delay:0.24s}
.axo .k5{transform:translateY(-110px);transition-delay:0.30s}
.axo .k6{transform:translateY(-132px);transition-delay:0.36s}
.axo .k7{transform:translateY(-154px);transition-delay:0.42s}
.axo .k8{transform:translateY(-176px);transition-delay:0.48s}
.axo .k9{transform:translateY(-198px);transition-delay:0.54s}
.js .axo:not(.ex) .k1{transform:none}
.js .axo:not(.ex) .k2{transform:none}
.js .axo:not(.ex) .k3{transform:none}
.js .axo:not(.ex) .k4{transform:none}
.js .axo:not(.ex) .k5{transform:none}
.js .axo:not(.ex) .k6{transform:none}
.js .axo:not(.ex) .k7{transform:none}
.js .axo:not(.ex) .k8{transform:none}
.js .axo:not(.ex) .k9{transform:none}
.legend b,.legend span{display:block}.legend span{color:var(--muted);font-size:.9rem;line-height:1.45;margin-top:2px}
.fig-svg{max-width:920px;margin:0 auto}
@media (max-width:700px){.fig{overflow-x:auto;-webkit-overflow-scrolling:touch}.fig-svg{min-width:660px}}
/* Show layers: hide the text cards so the exploded roof is in front */
main .card,.foot .card{transition:opacity .35s ease,transform .35s ease}
body.xp-on main .card,body.xp-on .foot .card{opacity:0;transform:translateY(12px);pointer-events:none}
/* light theme for text pages (systems, details, materials, contacts, privacy); the 3D pages stay dark */
body.page{--ink:#F4F2EC;--fg:#16191E;--muted:#4A505A;--line:rgba(22,25,30,.13);--hot-t:#3F7A0C;color-scheme:light;background:#F4F2EC}
body.page .nav-bar,body.page .logo{background:rgba(17,20,26,.92);border-color:rgba(255,255,255,.1);color:#F4F2EE}
body.page .menu-list{color:#F4F2EE}
body.page .burger i{background:#F4F2EE}
body.page .eyebrow,body.page .doc h1 em,body.page .sys-links a,body.page .chips a:hover{color:var(--hot-t)}
body.page .chips a:hover{border-color:var(--hot-t)}
body.page .rules li::marker{color:var(--hot-t)}
body.page .sys,body.page .mat li,body.page .explore a,body.page .chips a,body.page .tbl{background:#fff}
body.page .tbl th{background:#ECEAE3}
body.page .legend li::before{border-color:#5C9E1A}
body.page .btn-line{background:#fff;color:var(--fg)}
body.page .next{background:#E6F0DA;border-color:rgba(63,122,12,.25)}
body.page .sys-note{border-left-color:#5C9E1A}
body.page .fig{background:#12161C;border-color:transparent}

body.page .axo figcaption{color:var(--muted)}
body.page .legal-card{background:#fff}
body.page .doc a{color:#1E3D07}
body.page .doc .btn-main{color:#0E1406}
body.page .doc .foot-row{border-top-color:var(--line)}
body.page .key{color:var(--muted)}
body.page .k-mem{background:#F4F2EE;box-shadow:0 0 0 1px #16191E}
.swipe{display:none;font-size:.8rem;color:#8a909a;margin-top:6px;position:sticky;left:0}
@media (max-width:700px){.swipe{display:block}}
/* language picker */
.lang{position:relative}
.lang summary{list-style:none;display:flex;align-items:center;justify-content:center;min-width:40px;height:40px;padding:0 8px;border-radius:10px;cursor:pointer;font:700 .8rem var(--f-d);letter-spacing:.06em}
.lang summary::-webkit-details-marker{display:none}
.lang summary:hover{background:rgba(255,255,255,.08)}
.lang-list{position:absolute;right:0;top:calc(100% + 14px);min-width:170px;display:grid;gap:2px;padding:8px!important;background:#12151B;border:1px solid var(--line);border-radius:14px;box-shadow:0 18px 40px rgba(0,0,0,.45);color:#F4F2EE}
.lang-list a{min-height:44px}
.lang-list a[aria-current="true"]{background:rgba(116,194,30,.16);color:#9BE04A}
/* design review 30.10: light ending on the home page, contrast, touch targets */
.light{--fg:#16191E;--muted:#4A505A;--line:rgba(22,25,30,.13);background:#F4F2EC;color:var(--fg);pointer-events:auto;color-scheme:light}
.light .card{background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;border:0;padding-inline:0}
.light .eyebrow{color:#3F7A0C}
.light .facts li,.light .explore a,.light .faq details{background:#fff}
.light .opts input:checked+span{background:#16191E;color:#fff;border-color:#16191E}
.light .field input{background:#fff}
.light a{color:#1E3D07}.light .btn-main{color:#0E1406}
.facts li{align-content:start}
.card .eyebrow,.card .num{color:#9BE04A}
.light .card .eyebrow{color:#3F7A0C}
.hint{color:#D0D3DA}
@media (max-width:700px){.card{background:rgba(11,13,17,.66)}.light .card{background:transparent}.sec{padding-bottom:120px}}
.hud-btn{min-height:40px}
.nav{background:linear-gradient(rgba(11,13,17,.55),transparent)}
body.page .nav{background:linear-gradient(#F4F2EC 65%,rgba(244,242,236,0))}
.sys-head h2{font-size:clamp(1.5rem,2.6vw,2rem)}
.foot-links a{display:inline-flex;align-items:center;min-height:44px}
.chips a{min-height:44px}
@media (max-width:480px){.nav-bar .nav-icon,.menu summary,.lang summary{min-width:42px;height:44px}.nav-bar .nav-cta{min-height:44px}}
.powered{color:var(--muted);font-weight:500}
.menu-langs{display:none;gap:4px;margin-top:6px;padding-top:8px;border-top:1px solid rgba(255,255,255,.12)}
.menu-langs a{flex:1;justify-content:center;min-height:44px;font:700 .82rem var(--f-d);letter-spacing:.06em;padding:0}
.menu-langs a[aria-current="true"]{background:rgba(116,194,30,.16);color:#9BE04A}
@media (max-width:480px){.nav-bar>.lang{display:none}.menu-langs{display:flex}}
/* Elevate logo: horizontal two-colour, clear space = height of the E on every side */
.elv{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;margin:0 0 24px!important}
.elv img{display:block;height:36px;width:auto;margin:6px 0}
.elv span{font:600 .82rem var(--f-d);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.elv-foot{margin:28px 0 8px!important}
.elv-foot img{height:28px}
.menu-wa{display:none}
.menu-wa a{color:#25D366}
@media (max-width:480px){.nav-bar>.nav-wa{display:none}.menu-wa{display:block}.logo{padding:10px}.logo img{height:16px}.nav{gap:6px}.nav-bar{gap:2px;padding:4px}.nav-bar .nav-cta{padding:0 12px;font-size:.84rem}}
.legal-card dd{min-width:0;overflow-wrap:anywhere}
@media(max-width:420px){.legal-card dl{grid-template-columns:1fr;gap:2px}.legal-card dd{margin-bottom:10px}}
.step.finale{align-items:flex-end;min-height:120vh;min-height:120svh;padding-bottom:64px}.finale .card{max-width:none}.finale .foot-big{margin:0!important}
@media(max-width:700px){.step.finale{padding-bottom:130px}}