:root{
  --base:#FAFAF8;
  --lavender:#EDEAFD;
  --lilac:#FAF1FF;
  --cream:#FFF8EB;
  --sky:#E2EEFC;
  --navy:#0F2A5C;
  --blue:#1A78D6;
  --ink:#141821;
  --muted:#4B5466;
  --line:rgba(15,42,92,.12);
  --display:"Urbanist",system-ui,sans-serif;
  --body:"Instrument Sans",system-ui,sans-serif;
  --wrap:1240px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--base);color:var(--ink);font:400 17px/1.6 var(--body);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}

/* slow gradient field */
.aurora{position:fixed;inset:0;z-index:-1;pointer-events:none;background-color:var(--base);
  background-image:
    radial-gradient(closest-side,#E4DFFC 0%,rgba(244,236,255,.7) 45%,rgba(250,241,255,0) 100%),
    radial-gradient(closest-side,#FFF1D9 0%,rgba(255,248,235,0) 100%),
    radial-gradient(closest-side,#D8E8FB 0%,rgba(226,238,252,0) 100%),
    radial-gradient(closest-side,#EAE6FD 0%,rgba(234,230,253,0) 100%);
  background-size:120vmax 120vmax,90vmax 90vmax,95vmax 95vmax,70vmax 70vmax;
  background-repeat:no-repeat;
  background-position:70% 85%,-10% 70%,100% -10%,10% -15%;
  animation:aurora 38s ease-in-out infinite alternate}
@keyframes aurora{
  50%{background-position:35% 60%,25% 110%,70% 20%,-5% 30%}
  100%{background-position:95% 30%,5% 20%,30% 90%,60% -10%}}
.orb{display:none}
/* nav */
.nav{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px max(20px,calc((100vw - var(--wrap))/2));backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:rgba(250,250,248,.55);border-bottom:1px solid transparent;transition:border-color .3s}
.nav.scrolled{border-color:var(--line)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand img{width:44px;height:44px}
.brand-name{font-family:var(--display);font-size:21px;letter-spacing:-.01em;line-height:1}
.brand-name b{font-weight:800;color:var(--navy)}
.brand-name i{font-style:normal;font-weight:600;color:var(--blue)}
.nav ul{display:flex;align-items:center;gap:28px;list-style:none;margin:0;padding:0}
.nav ul a{text-decoration:none;font-weight:500;font-size:15px}
.nav ul a:not(.btn):hover{color:var(--blue)}
.menu-toggle{display:none}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;border-radius:999px;font:600 15px/1 var(--body);text-decoration:none;transition:background .2s,color .2s,box-shadow .2s;border:1.5px solid transparent;cursor:pointer}
.btn-dark{background:var(--navy);color:#fff}
.btn-dark:hover{background:var(--blue)}
.btn-ghost{border-color:var(--navy);color:var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}
.nav .btn{padding:11px 20px;color:#fff}

/* layout */
main>section{padding-left:max(20px,calc((100vw - var(--wrap))/2));padding-right:max(20px,calc((100vw - var(--wrap))/2))}
.section{padding-top:120px;padding-bottom:40px}
.section-head{max-width:760px;margin-bottom:56px}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);margin:0}
h2{font-size:clamp(34px,4.6vw,58px);font-weight:700;line-height:1.02;letter-spacing:-.025em}
.section-head p{font-size:19px;color:var(--muted);margin:20px 0 0;max-width:62ch}

/* hero */
.hero{min-height:calc(100vh - 72px);display:grid;grid-template-columns:1.25fr .85fr;gap:64px;align-items:center;padding-top:40px;padding-bottom:80px}
.hero-kicker{font-family:var(--display);font-weight:700;color:var(--blue);font-size:17px;letter-spacing:.02em;margin:0 0 22px}
h1{font-size:clamp(52px,7.6vw,112px);font-weight:800;line-height:.94;letter-spacing:-.04em;color:var(--navy);max-width:11ch}
.lede{font-size:20px;color:#2B3345;max-width:52ch;margin:32px 0 36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}

.symptoms{background:rgba(255,255,255,.62);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.9);border-radius:28px;padding:30px 30px 26px;box-shadow:0 30px 60px -30px rgba(15,42,92,.25)}
.symptoms h2{font-size:24px;letter-spacing:-.01em;line-height:1.15}
.symptoms-hint{color:var(--muted);margin:6px 0 16px;font-size:15px}
.symptoms ul{list-style:none;margin:0;padding:0}
.symptoms li+li{border-top:1px solid var(--line)}
.symptoms label{display:flex;gap:12px;align-items:flex-start;padding:11px 0;cursor:pointer;font-size:15.5px;line-height:1.4}
.symptoms input{appearance:none;flex:0 0 22px;width:22px;height:22px;margin:0;border:1.5px solid var(--navy);border-radius:7px;display:grid;place-content:center;transition:background .15s;cursor:pointer}
.symptoms input::after{content:"";width:10px;height:6px;border:2.5px solid #fff;border-top:0;border-right:0;transform:rotate(-45deg) translate(1px,-1px);opacity:0}
.symptoms input:checked{background:var(--blue);border-color:var(--blue)}
.symptoms input:checked::after{opacity:1}
.verdict{margin:14px 0 0;padding:14px 16px;border-radius:14px;background:var(--navy);color:#fff;font-size:15px;line-height:1.45;transition:background .3s}
.verdict.hot{background:linear-gradient(120deg,var(--navy),var(--blue))}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:2px solid var(--navy)}
.step{padding:32px 32px 8px 0;position:relative}
.step+.step{padding-left:32px;border-left:1px solid var(--line)}
.step-num{font-family:var(--display);font-weight:800;font-size:88px;line-height:1;color:transparent;-webkit-text-stroke:1.5px var(--blue);display:block;margin-bottom:18px}
.step h3{font-size:30px;font-weight:700;letter-spacing:-.02em}
.step-sub{color:var(--blue);font-weight:600;margin:4px 0 16px}
.step-q{font-size:18px;color:var(--ink);margin:0 0 22px}
.step h4{font-family:var(--body);font-size:14px;font-weight:600;color:var(--muted);margin-bottom:6px}
.step ul{margin:0;padding-left:18px;color:#2B3345;font-size:15.5px}
.step li{margin:4px 0}

/* activation split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:start}
.big{font-size:23px;line-height:1.45;color:#2B3345;margin:24px 0 0;max-width:30ch}
.checklist{background:rgba(255,255,255,.55);border-radius:28px;padding:36px;border:1px solid rgba(255,255,255,.9)}
.checklist h3{font-size:20px;margin-bottom:12px}
.checklist ul+h3{margin-top:30px}
.tools{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.tools li{padding:8px 14px;border-radius:999px;background:var(--navy);color:#fff;font-size:14.5px;font-weight:500}
.qs{margin:0;padding-left:20px}
.qs li{margin:8px 0}

/* channel types */
.types{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.types article{padding:30px 28px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.28);transition:background .25s}
.types article:hover{background:rgba(255,255,255,.7)}
.types h3{font-size:24px;font-weight:700;color:var(--navy);margin-bottom:8px;letter-spacing:-.01em}
.types p{margin:0;color:#2B3345}
.types .ex{margin-top:18px;font-size:14px;color:var(--muted)}
.types .ex::before{content:"For example: ";color:var(--blue);font-weight:600}

/* root cause tree */
.tree{display:flex;flex-direction:column;align-items:center}
.tree-root{background:var(--navy);color:#fff;font-family:var(--display);font-weight:700;font-size:22px;padding:18px 30px;border-radius:999px;text-align:center;position:relative}
.tree-root::after{content:"";position:absolute;left:50%;top:100%;width:2px;height:36px;background:var(--navy)}
.tree-branches{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;width:100%;margin-top:36px;padding-top:36px;border-top:2px solid var(--navy);position:relative}
.branch{position:relative;background:rgba(255,255,255,.6);border-radius:22px;padding:24px 26px}
.branch::before{content:"";position:absolute;left:50%;top:-38px;width:2px;height:38px;background:var(--navy)}
.branch h3{font-size:20px;color:var(--blue);margin-bottom:8px}
.branch ul{margin:0;padding-left:18px}
.branch li{margin:6px 0}

/* maturity (dark) */
.dark{margin-top:120px;padding-top:110px;padding-bottom:110px;color:#E6ECF7;background:radial-gradient(80% 90% at 85% 10%,#1E4FA0 0%,transparent 60%),radial-gradient(70% 80% at 0% 100%,#2A2370 0%,transparent 60%),#0A1B3D;background-size:140% 140%;animation:darkShift 40s ease-in-out infinite alternate}
@keyframes darkShift{to{background-position:100% 100%}}
.dark h2{color:#fff}
.dark .section-head p{color:#B9C6DE}
.maturity{display:grid;grid-template-columns:300px 1fr;gap:48px}
.pillars{display:flex;flex-direction:column;gap:4px}
.pillars button{all:unset;cursor:pointer;padding:14px 18px;border-radius:14px;font-family:var(--display);font-weight:600;font-size:18px;line-height:1.25;color:#B9C6DE;transition:background .2s,color .2s}
.pillars button:hover{color:#fff}
.pillars button[aria-selected="true"]{background:rgba(255,255,255,.1);color:#fff;box-shadow:inset 3px 0 0 #5BB0FF}
.pillars button:focus-visible{outline:3px solid #5BB0FF}
.pillar-desc{font-size:20px;color:#fff;margin:0 0 24px;max-width:60ch}
.levels{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.levels li{border-radius:18px;padding:18px 16px 20px;background:rgba(255,255,255,var(--a));border:1px solid rgba(255,255,255,.12);font-size:15px;line-height:1.45;color:#E6ECF7;animation:lvIn .5s ease both}
.levels li:nth-child(1){--a:.03}.levels li:nth-child(2){--a:.06}.levels li:nth-child(3){--a:.09}.levels li:nth-child(4){--a:.13}.levels li:nth-child(5){--a:.18;border-color:rgba(91,176,255,.6)}
.levels strong{display:block;font-family:var(--display);font-size:15px;color:#5BB0FF;margin-bottom:8px}
@keyframes lvIn{from{opacity:0;transform:translateY(6px)}}

/* scorecard */
.scorecard{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start}
.criterion{border-top:1px solid var(--line);padding:24px 0}
.criterion:last-child{border-bottom:1px solid var(--line)}
.criterion-top{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.criterion h3{font-size:22px;letter-spacing:-.01em}
.criterion .group{font-size:14px;color:var(--muted);margin:2px 0 0}
.lv{display:flex;gap:6px}
.lv button{all:unset;cursor:pointer;width:42px;height:42px;border-radius:12px;display:grid;place-content:center;font-family:var(--display);font-weight:700;font-size:17px;border:1.5px solid var(--line);background:rgba(255,255,255,.6);color:var(--navy);transition:background .15s,color .15s,border-color .15s}
.lv button:hover{border-color:var(--blue)}
.lv button[aria-pressed="true"]{background:var(--blue);border-color:var(--blue);color:#fff}
.lv button:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.criterion .desc{margin:14px 0 0;color:#2B3345;max-width:70ch;min-height:0}
.criterion .desc:empty{display:none}
.score-panel{position:sticky;top:100px;background:var(--navy);color:#fff;border-radius:28px;padding:30px;background-image:radial-gradient(90% 90% at 100% 0%,rgba(26,120,214,.7),transparent 65%)}
.score-label{margin:0;color:#B9C6DE;font-weight:500}
.score-value{font-family:var(--display);font-weight:800;font-size:84px;line-height:1;margin:8px 0 16px;letter-spacing:-.03em}
.score-value small{font-size:24px;font-weight:600;color:#B9C6DE;margin-left:6px;letter-spacing:0}
.score-bar{height:8px;border-radius:99px;background:rgba(255,255,255,.15);overflow:hidden}
.score-bar span{display:block;height:100%;width:0;background:linear-gradient(90deg,#5BB0FF,#fff);transition:width .5s ease}
.score-note{margin:16px 0 0;font-size:15.5px;line-height:1.45}
.score-alt{margin:20px 0 0;padding-top:18px;border-top:1px solid rgba(255,255,255,.15);font-size:13.5px;color:#B9C6DE;line-height:1.5}

/* contact */
.contact{padding-bottom:120px}
.contact-card{max-width:820px;margin:0 auto;text-align:center;background:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.95);border-radius:36px;padding:56px 40px;box-shadow:0 40px 80px -40px rgba(15,42,92,.3)}
.contact-card img{width:min(420px,100%);margin:0 auto 36px}
.contact-card p{color:#2B3345;font-size:18px;max-width:52ch;margin:18px auto 30px}
.contact-card .founder{font-size:15px;color:var(--muted);margin:26px auto 0}

.footer{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px;padding:28px max(20px,calc((100vw - var(--wrap))/2));border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.footer p{margin:0}

/* responsive */
@media (max-width:1000px){
  .hero{grid-template-columns:1fr;gap:48px;min-height:0;padding-top:48px}
  .steps,.types{grid-template-columns:1fr 1fr}
  .step:nth-child(3){grid-column:1/-1;border-left:0;padding-left:0;border-top:1px solid var(--line)}
  .split{grid-template-columns:1fr;gap:36px}
  .maturity{grid-template-columns:1fr;gap:24px}
  .pillars{flex-direction:row;overflow-x:auto;padding-bottom:6px}
  .pillars button{white-space:nowrap;font-size:16px}
  .levels{grid-template-columns:1fr}
  .scorecard{grid-template-columns:1fr}
  .score-panel{position:static}
}
@media (max-width:760px){
  body{font-size:16px}
  .menu-toggle{display:inline-flex;all:unset;cursor:pointer;font-weight:600;padding:10px 16px;border:1.5px solid var(--navy);border-radius:999px;font-size:14px}
  .nav ul{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;align-items:flex-start;gap:0;padding:8px 20px 20px;background:rgba(250,250,248,.97);border-bottom:1px solid var(--line)}
  .nav ul.open{display:flex}
  .nav ul li{width:100%;padding:10px 0}
  .brand-name{font-size:18px}
  .section{padding-top:84px}
  .steps,.types,.tree-branches{grid-template-columns:1fr}
  .step,.step+.step{padding:28px 0 8px;border-left:0}
  .step+.step{border-top:1px solid var(--line)}
  .step-num{font-size:64px}
  .tree-branches{border-top:0;padding-top:0;gap:14px}
  .branch::before{display:none}
  .tree-root::after{display:none}
  .tree-root{font-size:18px;border-radius:22px;margin-bottom:-16px}
  .symptoms,.checklist{padding:24px 20px}
  .contact-card{padding:40px 22px}
  .lv button{width:38px;height:38px}
}
@media (prefers-reduced-motion:reduce){
  .aurora,.dark,.levels li{animation:none}
  html{scroll-behavior:auto}
}
.levels strong small{display:block;font-family:var(--body);font-weight:500;font-size:12.5px;color:#8FA3C6;margin-top:2px}