@font-face{font-family:"Red Hat Display";src:url(fonts/red-hat-display-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Red Hat Display";src:url(fonts/red-hat-display-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Red Hat Text";src:url(fonts/red-hat-text-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Red Hat Text";src:url(fonts/red-hat-text-500.woff2) format("woff2");font-weight:500;font-display:swap}

:root{
  --ink:#0D2344;--blue:#104C8A;--blue-dark:#0D3D70;--cyan:#1FC2E3;--cyan-soft:#C4EDF6;
  --mist:#EEF5FA;--line:#CFDFEA;--muted:#4A6079;--paper:#fff;--success:#12795A;--error:#B3261E;
  --display:"Red Hat Display",system-ui,sans-serif;--text:"Red Hat Text",system-ui,sans-serif;
  --section:clamp(64px,10vw,128px);--gutter:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.55 var(--text);overflow-x:hidden}
img,svg{display:block;max-width:100%}
h1,h2,h3{font-family:var(--display);font-weight:700;margin:0;text-wrap:balance}
h2{font-size:clamp(32px,4.2vw,46px);line-height:1.12;letter-spacing:-.01em}
h3{font-size:24px;line-height:1.25}
p{margin:0}
a{color:var(--blue)}
ul,ol,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;border-radius:4px}

.wrap{max-width:1248px;margin:0 auto;padding:0 var(--gutter)}
.section{padding:var(--section) 0}
.mist{background:var(--mist)}
.narrow{max-width:760px}
.lead{font-size:20px;line-height:1.5;color:var(--muted);max-width:60ch}
.note{font-size:14px;color:var(--muted);margin-top:16px}

.skip{position:absolute;left:16px;top:-64px;background:var(--ink);color:#fff;padding:12px 16px;border-radius:8px;z-index:50}
.skip:focus{top:12px}

.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 24px;border-radius:8px;font:500 17px/1.2 var(--display);text-decoration:none;border:2px solid transparent;cursor:pointer;text-align:center;transition:background-color .15s,color .15s,border-color .15s}
.btn-small{min-height:44px;padding:0 16px;font-size:15px;white-space:nowrap}
.btn-primary{background:var(--blue);color:#fff}
.btn-primary:hover{background:var(--blue-dark)}
.btn-secondary{border-color:var(--blue);color:var(--blue);background:transparent}
.btn-secondary:hover{background:var(--blue);color:#fff}
.btn-cyan{background:var(--cyan);color:var(--ink);width:100%}
.btn-cyan:hover{background:#5BD6EE}
.link-btn{background:none;border:0;padding:8px 0;min-height:44px;font:500 14px var(--text);color:inherit;text-decoration:underline;text-underline-offset:3px;cursor:pointer}

/* Header */
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line)}
.header-row{display:flex;align-items:center;gap:32px;min-height:72px}
.brand img{width:196px;height:auto}
.main-nav{display:flex;gap:24px;margin-left:auto}
.main-nav a{color:var(--ink);text-decoration:none;font-weight:500;padding:12px 0}
.main-nav a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}
.header-actions{display:flex;align-items:center;gap:16px}
.lang{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;font-weight:500;color:var(--ink)}

/* Hero */
.hero{padding:clamp(40px,7vw,96px) 0 clamp(56px,8vw,112px)}
.hero-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(32px,4vw,64px);align-items:center}
h1{font-size:clamp(40px,4.6vw,62px);line-height:1.05;letter-spacing:-.02em}
.hero-copy .lead{margin-top:24px}
.actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:32px}
.stage{position:relative;margin:0;padding:24px;background:var(--ink);color:#fff;border-radius:24px;overflow:hidden;box-shadow:0 24px 60px rgba(13,35,68,.28)}
.stage-mark{position:absolute;right:-110px;bottom:-70px;width:560px;height:auto;opacity:.16;pointer-events:none;max-width:none}
.stage figcaption{position:relative;display:flex;justify-content:space-between;align-items:center;gap:16px;font-size:14px;color:#C6D6E6}
.stage-grid{position:relative;display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:24px;margin-top:8px}
.phone{background:#fff;color:var(--ink);border-radius:24px;padding:10px;border:4px solid #1B3A66;display:flex;flex-direction:column}
.phone-bar{font:700 14px var(--display);text-align:center;padding:8px 0 10px;border-bottom:1px solid var(--line)}
.phone-chat{flex:1;display:flex;flex-direction:column;justify-content:center;gap:10px;padding:12px 2px 4px}
.phone-pill{align-self:center;padding:4px 12px;border-radius:12px;background:#FBEDEC;color:var(--error);font:500 14px var(--text)}
.phone-card{padding:10px 12px;border-radius:12px;background:var(--cyan-soft);border-left:4px solid var(--blue);font-size:14px;line-height:1.35}
.phone-card strong{display:block;font:700 15px var(--display)}
.bubble{max-width:90%;padding:8px 12px;border-radius:14px;font-size:14px;line-height:1.35}
.bubble.bot{background:var(--mist);align-self:flex-start;border-bottom-left-radius:4px}
.bubble.user{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:clamp(40px,5vw,72px);padding-top:24px;border-top:1px solid var(--line);color:var(--muted)}
.facts strong{display:block;font:700 22px/1.25 var(--display);color:var(--ink)}
.trace{position:relative;margin-top:8px}
.trace-rail{position:absolute;left:0;top:0;width:64px;height:100%;fill:none;overflow:visible}
.trace-rail path{vector-effect:non-scaling-stroke;stroke-linejoin:round}
.trace-rail .halo{stroke:rgba(31,194,227,.28);stroke-width:10}
.trace-rail .core{stroke:var(--cyan);stroke-width:3}
.trace ol{display:grid;grid-auto-rows:1fr}
.trace li{position:relative;padding:10px 0 10px 80px;display:flex;flex-direction:column;justify-content:center}
.trace time{font-size:14px;color:#C6D6E6}
.trace strong{font:700 17px/1.25 var(--display)}
.ev-text{color:#C6D6E6;font-size:14px;line-height:1.35}
.node{position:absolute;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;background:var(--ink);border:5px solid var(--cyan)}
.node-fill{background:var(--cyan)}
.trace-play .trace-rail{animation:draw 2.2s linear both}
.trace-play li{animation:appear .35s ease-out both;animation-delay:calc(var(--i)*.48s)}
.trace-play .phone-card{animation:appear .3s ease-out both;animation-delay:calc(var(--i)*.48s)}
.trace-play .bubble{animation:appear .3s ease-out both;animation-delay:calc(var(--i)*.48s)}
@keyframes draw{from{clip-path:inset(0 -20px 100% -20px)}to{clip-path:inset(0 -20px 0 -20px)}}
@keyframes appear{from{opacity:0}to{opacity:1}}

/* Ring list */
.ring-list li{position:relative;padding:4px 0 4px 26px}
.ring-list li::before{content:"";position:absolute;left:0;top:10px;width:13px;height:13px;border-radius:50%;border:3px solid var(--cyan)}

/* Leaks */
.leaks{margin-top:56px}
.leak-row{display:grid;grid-template-columns:minmax(0,4fr) 96px minmax(0,6fr);padding:40px 0;border-top:1px solid var(--line)}
.leak h3{font-size:24px}
.leak p{color:var(--muted);margin-top:8px;max-width:38ch}
.connector{position:relative;height:30px}
.connector::before{content:"";position:absolute;left:12px;right:12px;top:14px;height:3px;background:var(--blue);box-shadow:0 0 0 3px var(--cyan-soft)}
.connector::after{content:"";position:absolute;right:0;top:4px;width:22px;height:22px;border-radius:50%;background:#fff;border:5px solid var(--blue)}
.fix{padding-left:16px}
.fix h3{color:var(--blue)}
.fix ul{margin-top:12px;font-size:18px}
.fix .ring-list li::before{top:12px}

/* Demo */
.band{background:var(--ink);color:#fff}
.band .lead{color:#C6D6E6;margin-top:16px}
.demo-wrap{margin-top:40px}
.sector-tabs{display:flex;flex-wrap:wrap;gap:8px}
.tab{min-height:44px;padding:0 18px;border-radius:22px;border:2px solid rgba(255,255,255,.4);background:transparent;color:#fff;font:500 15px var(--text);cursor:pointer}
.tab:hover{border-color:var(--cyan)}
.tab[aria-pressed=true]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.demo{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:24px;margin-top:24px;color:var(--ink)}
.panel{background:#fff;border-radius:16px;padding:24px}
.panel-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;padding-bottom:16px;border-bottom:1px solid var(--line)}
.panel-head strong{font:700 18px var(--display)}
.panel-head span{font-size:14px;color:var(--muted)}
.chat{display:flex;flex-direction:column;min-height:560px}
.messages{flex:1;display:flex;flex-direction:column;gap:12px;padding:24px 0;overflow-y:auto;max-height:440px}
.msg{max-width:82%;padding:12px 16px;border-radius:16px;line-height:1.45}
.msg.bot{background:var(--mist);align-self:flex-start;border-bottom-left-radius:4px}
.msg.user{background:var(--blue);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.chips{display:flex;flex-wrap:wrap;gap:8px;min-height:44px}
.chip{min-height:44px;padding:0 16px;border-radius:22px;border:2px solid var(--blue);background:#fff;color:var(--blue);font:500 15px var(--text);cursor:pointer}
.chip:hover{background:var(--blue);color:#fff}
.side{display:grid;gap:24px;align-content:start}
.slots{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:16px}
.slot{display:flex;flex-direction:column;align-items:flex-start;min-height:60px;padding:8px 12px;border-radius:8px;border:1px solid var(--line);background:#fff;font:500 15px var(--text);color:var(--ink);cursor:pointer;transition:background-color .15s,border-color .15s}
.slot-state{font-size:14px;font-weight:400;color:var(--muted)}
.slot:hover:not(:disabled){border-color:var(--blue)}
.slot:disabled{background:var(--mist);color:var(--muted);cursor:not-allowed}
.slot.picked,.slot.picked:disabled{background:var(--cyan-soft);border:2px solid var(--blue);color:var(--ink)}
.slot.picked .slot-state{color:var(--ink);font-weight:500}
.log{margin-top:12px;min-height:40px}
.log .log-empty{color:var(--muted);padding-left:0}
.log .log-empty::before{display:none}
.reset{color:var(--blue);margin-top:4px}

/* Calculator */
.calc-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:center}
.calc-lead{margin-top:16px}
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border:1px solid var(--line);border-radius:24px;overflow:hidden}
.calc-inputs{padding:32px;display:grid;gap:28px;align-content:center}
.calc output{font:700 20px var(--display);color:var(--blue)}
.calc input[type=range]{width:100%;height:44px;accent-color:var(--blue);margin:0}
.calc input[type=text]{width:100%;min-height:48px;padding:10px 12px;border:1px solid #7E95AB;border-radius:8px;font:500 18px var(--text);color:var(--ink)}
.calc-out{background:var(--ink);color:#fff;padding:32px}
.calc-k{color:#C6D6E6}
.calc-k b{color:#fff;font-weight:500}
.calc-big{font:700 clamp(32px,3.4vw,44px)/1.1 var(--display);margin:4px 0 12px;overflow-wrap:anywhere}
.calc-break{margin:16px 0 20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.2)}

/* Compare */
.compare-lead{margin-top:16px}
.compare{width:100%;margin-top:40px;border-collapse:collapse;font-size:16px}
.compare th,.compare td{padding:16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.compare thead th{font:700 18px var(--display)}
.compare tbody th{font-weight:500;width:34%}
.compare td{color:var(--muted)}
.compare .us{background:var(--cyan-soft);color:var(--ink);font-weight:500}
.compare thead .us{background:var(--blue);color:#fff;border-radius:12px 12px 0 0}

/* Reviews */
.reviews-lead{margin-top:16px}
.reviews-label{margin-top:24px;padding-left:16px;border-left:4px solid var(--cyan);font-weight:500}
.reviews{display:grid;gap:16px}
.reviews li{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;font-size:18px}
.reviews li:nth-child(2){margin-left:32px}
.reviews li:nth-child(3){margin-left:64px}
.stars{color:var(--blue);letter-spacing:2px;font-size:18px}
.review-by{margin-top:8px;font-size:14px;color:var(--muted)}

/* Who, FAQ */
.who-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(32px,6vw,80px);align-items:start}
.who-list>div{padding:24px 0;border-top:1px solid var(--line)}
.who-list>div:first-child{border-top:0;padding-top:0}
.who-list dt{font:700 20px/1.3 var(--display)}
.who-list dd{color:var(--muted);margin-top:4px}

/* Staircase */
.stairs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;align-items:end;margin-top:48px}
.tier{background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;display:flex;flex-direction:column}
.for{color:var(--muted);margin-top:8px}
.price{margin:24px 0;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:grid;gap:12px}
.price dt{font-size:14px;color:var(--muted)}
.price dd{font:700 24px/1.2 var(--display)}
.price small{font:400 14px var(--text);color:var(--muted)}
.years{display:grid;gap:8px;margin:-8px 0 24px;font-size:14px;color:var(--muted)}
.years>div{display:flex;justify-content:space-between;gap:12px}
.years dd{color:var(--ink);font-weight:500;text-align:right;white-space:nowrap}
.inherits{font-weight:500;margin-bottom:8px}
.tier ul{margin-bottom:24px}
.tier .btn{margin-top:auto}
.tier-1{border-top:8px solid var(--cyan-soft)}
.tier-2{border-top:48px solid var(--cyan)}
.tier-3{border-top:88px solid var(--blue)}
.plans{margin-top:56px}
.plan{display:grid;grid-template-columns:minmax(0,4fr) minmax(0,8fr);gap:24px;padding:20px 0;border-top:1px solid var(--line)}
.plans h3{margin-bottom:16px}
.plan strong{display:block;font:700 18px var(--display)}
.plan span{color:var(--muted)}
.price-note{margin-top:24px;padding-top:20px;border-top:1px solid var(--line);font-size:14px;color:var(--muted);max-width:75ch}

/* Steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px;margin-top:48px;position:relative}
.steps::before{content:"";position:absolute;left:20px;right:calc(25% - 30px);top:19px;height:3px;background:var(--blue);box-shadow:0 0 0 3px var(--cyan-soft)}
.steps li{position:relative}
.step-n{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:#fff;border:5px solid var(--blue);font:700 16px var(--display);color:var(--blue);position:relative}
.steps h3{font-size:22px;margin-top:20px}
.steps p{color:var(--muted);margin-top:8px}

/* FAQ */
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:20px 32px 20px 0;font:700 20px/1.3 var(--display);list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";position:absolute;right:4px;top:26px;width:12px;height:12px;border-right:3px solid var(--blue);border-bottom:3px solid var(--blue);transform:rotate(45deg);transition:transform .15s}
.faq details[open] summary::after{transform:rotate(225deg);top:32px}
.faq p{padding:0 32px 24px 0;color:var(--muted);font-size:18px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:clamp(40px,6vw,88px);align-items:start}
.contact-grid .lead{margin:16px 0 24px}
.gets-title{font-size:20px}
.gets{margin:8px 0 28px}
.wa-float{position:fixed;right:20px;bottom:20px;z-index:15;display:inline-flex;align-items:center;gap:8px;min-height:52px;padding:0 18px 0 14px;border-radius:26px;background:var(--success);color:#fff;font:500 16px var(--display);text-decoration:none;box-shadow:0 8px 24px rgba(13,35,68,.3)}
.wa-float:hover{background:#0E6249}
.form{display:grid;gap:20px}
.field label{display:block;font-weight:500;margin-bottom:6px}
.field input:not([type=checkbox]),.field select,.field textarea{width:100%;min-height:48px;padding:10px 12px;border:1px solid #7E95AB;border-radius:8px;font:400 16px var(--text);color:var(--ink);background:#fff}
.field.invalid input,.field.invalid select{border-color:var(--error);border-width:2px}
.err{color:var(--error);font-size:14px;margin-top:6px}
.check label{display:flex;gap:10px;align-items:flex-start;font-weight:400;margin:0}
.check input{width:22px;height:22px;margin:2px 0 0;flex:none;accent-color:var(--blue)}
.form .btn{justify-self:start}
.form .note{margin-top:-8px}
.success{border-left:4px solid var(--success);padding:12px 16px;background:#E7F4EF}

/* Footer */
.site-footer{background:var(--ink);color:#C6D6E6;padding:56px 0 24px}
.footer-row{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap}
.site-footer img{width:240px;height:auto}
.site-footer p{margin-top:12px;max-width:44ch}
.footer-links{display:grid;gap:4px;align-content:start}
.footer-links a{color:#fff;padding:10px 0}
.footer-base{margin-top:24px;font-size:14px}

/* Prose */
.prose{max-width:720px}
.prose h1{font-size:clamp(36px,5vw,52px)}
.prose h2{font-size:24px;margin-top:32px}
.prose p{margin-top:8px;font-size:18px}
.draft{border-left:4px solid var(--error);padding:12px 16px;background:#FBEDEC;margin-top:24px!important;font-size:16px!important}

@media (max-width:1040px){
  .main-nav{display:none}
  .header-actions{margin-left:auto}
  .hero-grid,.demo,.who-grid,.contact-grid,.calc-grid{grid-template-columns:minmax(0,1fr)}
  .chat{min-height:0}
  .messages{min-height:220px;max-height:360px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps::before{display:none}
}
@media (max-width:820px){
  .leak-row{grid-template-columns:minmax(0,1fr);gap:0}
  .connector{height:56px;width:30px;margin-left:4px}
  .connector::before{left:14px;right:auto;top:8px;bottom:12px;width:3px;height:auto}
  .connector::after{right:auto;left:5px;top:auto;bottom:0}
  .stairs{grid-template-columns:minmax(0,1fr)}
  .tier-2,.tier-3{border-top-width:8px}
  .fix{padding-left:0}
  .reviews li:nth-child(n){margin-left:0}
  .plan{grid-template-columns:minmax(0,1fr);gap:8px}
  .calc{grid-template-columns:minmax(0,1fr)}
  .facts{grid-template-columns:minmax(0,1fr);gap:16px}
}
@media (max-width:560px){
  :root{--gutter:16px}
  .brand img{width:128px}
  .header-row{gap:8px;min-height:64px}
  .header-actions{gap:4px}
  .btn-small{padding:0 12px;font-size:14px}
  .actions .btn,.contact-grid .btn,.form .btn{width:100%}
  .trace li{padding-left:76px}
  .phone{display:none}
  .stage{padding:20px 16px;border-radius:16px}
  .stage-grid{grid-template-columns:minmax(0,1fr)}
  .stage-mark{width:380px;right:-120px;bottom:-40px}
  .wa-float span{display:none}
  .wa-float{padding:0;width:56px;height:56px;justify-content:center;border-radius:50%}
  .compare,.compare tbody,.compare tr,.compare th,.compare td{display:block;width:auto}
  .compare thead{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
  .compare tr{padding:16px 0;border-bottom:1px solid var(--line)}
  .compare tbody th{width:auto;padding:0 0 8px;border:0;font:700 18px/1.3 var(--display)}
  .compare td{display:flex;justify-content:space-between;gap:16px;padding:6px 8px;border:0}
  .compare td::before{content:attr(data-label);flex:none;max-width:45%;color:var(--muted);font-weight:400}
  .compare td.us{border-radius:6px;text-align:right}
  .steps{grid-template-columns:minmax(0,1fr)}
  .lead{font-size:18px}
}
@media (max-width:350px){
  .header-actions .btn-small{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
}