:root{
  --hy-ink:#10131a;
  --hy-ink-2:#1a1f2b;
  --hy-paper:#f5f6f2;
  --hy-white:#ffffff;
  --hy-muted:#636a75;
  --hy-line:rgba(16,19,26,.12);
  --hy-violet:#6757f5;
  --hy-violet-soft:#ebe8ff;
  --hy-mint:#c8f5d8;
  --hy-sky:#dceeff;
  --hy-radius:28px;
  --hy-shadow:0 18px 60px rgba(16,19,26,.08);
  --hy-shell:1180px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--hy-paper);color:var(--hy-ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{max-width:100%;height:auto}
a{color:inherit}
button,input,textarea,select{font:inherit}
::selection{background:var(--hy-violet);color:#fff}

.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.screen-reader-text:focus{clip:auto!important;width:auto;height:auto;margin:12px;padding:12px 16px;background:#fff;color:#111;z-index:99999;border-radius:10px}
.site-shell{width:min(var(--hy-shell),calc(100% - 40px));margin-inline:auto}
.section-pad{padding:112px 0}
.section-pad--soft{background:#eceef2}
.section-pad--dark{background:var(--hy-ink);color:#fff}

.site-header{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--hy-paper) 86%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid rgba(16,19,26,.08)}
.site-header__inner{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;text-decoration:none;font-weight:820;letter-spacing:.09em;font-size:16px}
.brand__mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:var(--hy-ink);color:var(--hy-paper);overflow:hidden}
.brand__mark svg{width:21px;height:21px}
.brand__custom-logo .custom-logo-link{display:flex;align-items:center}
.brand__custom-logo img{max-height:42px;width:auto}
.site-nav{display:flex;align-items:center;gap:26px;font-size:14px;color:#4e5560}
.site-nav a{text-decoration:none;position:relative}
.site-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:1px;background:var(--hy-ink);transition:right .2s ease}
.site-nav a:hover:after,.site-nav a:focus-visible:after{right:0}

.hero{padding-top:88px;overflow:hidden}
.hero__grid{display:grid;grid-template-columns:minmax(0,1.03fr) minmax(440px,.97fr);align-items:center;gap:70px;min-height:650px}
.hero__copy{max-width:700px}
.eyebrow{margin:0 0 18px;color:var(--hy-violet);font-size:13px;line-height:1.2;font-weight:800;text-transform:uppercase;letter-spacing:.14em}
.eyebrow--light{color:#bdb5ff}
.status-pill{display:inline-flex;align-items:center;gap:9px;margin-bottom:32px;padding:8px 12px;border:1px solid var(--hy-line);border-radius:999px;background:rgba(255,255,255,.56);font-size:12px;color:#515862}
.status-pill__dot{width:7px;height:7px;border-radius:999px;background:#31b769;box-shadow:0 0 0 4px rgba(49,183,105,.11)}
.hero h1{max-width:760px;margin:0;font-size:clamp(52px,6.4vw,88px);line-height:.95;letter-spacing:-.065em;font-weight:820}
.hero__lede{max-width:680px;margin:30px 0 0;color:var(--hy-muted);font-size:clamp(19px,2vw,23px);line-height:1.58;letter-spacing:-.015em}
.hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:14px;text-decoration:none;font-size:14px;font-weight:760;border:1px solid transparent;transition:transform .18s ease,background .18s ease,border-color .18s ease}
.button:hover{transform:translateY(-1px)}
.button--primary{background:var(--hy-ink);color:#fff}
.button--primary:hover{background:#242a37}
.button--quiet{background:rgba(255,255,255,.52);border-color:var(--hy-line)}
.button--quiet:hover{background:#fff}

.hero__visual{position:relative;min-height:510px;border-radius:42px;background:linear-gradient(145deg,#edf0f6 0%,#fff 54%,#ebe9ff 100%);border:1px solid rgba(16,19,26,.08);box-shadow:var(--hy-shadow);isolation:isolate}
.hero__visual:before{content:"";position:absolute;inset:28px;border:1px solid rgba(16,19,26,.06);border-radius:30px}
.orbit{position:absolute;border:1px solid rgba(103,87,245,.24);border-radius:50%;z-index:-1}
.orbit--one{width:390px;height:390px;right:-120px;top:-80px}
.orbit--two{width:260px;height:260px;left:-110px;bottom:-50px;border-color:rgba(49,183,105,.26)}
.lesson-card{position:absolute;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border:1px solid rgba(16,19,26,.08);box-shadow:0 16px 50px rgba(16,19,26,.11);border-radius:24px}
.lesson-card--main{left:50%;top:50%;width:min(390px,78%);padding:28px;transform:translate(-50%,-50%) rotate(-1.5deg)}
.lesson-card__label{display:block;margin-bottom:12px;color:var(--hy-muted);font-size:12px;text-transform:uppercase;letter-spacing:.12em;font-weight:750}
.lesson-card strong{display:block;font-size:25px;letter-spacing:-.03em}
.word-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:24px}
.word-row span{padding:9px 12px;border:1px solid var(--hy-line);border-radius:10px;background:#f7f7f5;font-size:14px;font-weight:720}
.word-row span:nth-child(2){background:var(--hy-mint)}
.mini-card{position:absolute;display:flex;align-items:center;gap:8px;padding:12px 14px;border-radius:14px;background:#fff;border:1px solid rgba(16,19,26,.08);box-shadow:0 10px 30px rgba(16,19,26,.09);font-size:13px;font-weight:760}
.mini-card span{color:var(--hy-violet)}
.mini-card--play{top:55px;left:42px;transform:rotate(-5deg)}
.mini-card--listen{right:30px;top:115px;transform:rotate(4deg)}
.mini-card--retry{left:48px;bottom:56px;transform:rotate(3deg)}

.proof-strip{border-block:1px solid var(--hy-line);background:rgba(255,255,255,.35)}
.proof-strip__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.proof-strip__grid>div{padding:24px 28px;border-right:1px solid var(--hy-line)}
.proof-strip__grid>div:first-child{padding-left:0}
.proof-strip__grid>div:last-child{border-right:0}
.proof-strip strong,.proof-strip span{display:block}
.proof-strip strong{font-size:15px;margin-bottom:4px}
.proof-strip span{font-size:12px;color:var(--hy-muted)}

.section-heading{max-width:860px;margin-bottom:52px}
.section-heading h2,.safety-panel h2,.stage-grid h2{margin:0;font-size:clamp(40px,5.1vw,68px);line-height:1.02;letter-spacing:-.055em}
.section-heading>p:last-child,.safety-panel__intro>p:last-child{max-width:720px;margin:24px 0 0;color:var(--hy-muted);font-size:18px;line-height:1.7}
.feature-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:18px}
.feature-card{grid-column:span 6;min-height:285px;padding:32px;border-radius:var(--hy-radius);background:#fff;border:1px solid var(--hy-line);display:flex;flex-direction:column;justify-content:flex-end}
.feature-card--accent{background:var(--hy-violet-soft)}
.feature-card--dark{background:var(--hy-ink-2);color:#fff}
.feature-card__num{display:inline-flex;align-self:flex-start;margin-bottom:auto;color:var(--hy-muted);font-size:12px;font-weight:800;letter-spacing:.1em}
.feature-card--dark .feature-card__num{color:#aeb6c4}
.feature-card h3{margin:28px 0 10px;font-size:29px;letter-spacing:-.035em}
.feature-card p{max-width:540px;margin:0;color:var(--hy-muted);font-size:16px;line-height:1.65}
.feature-card--dark p{color:#bcc3cf}

.split-section{display:grid;grid-template-columns:minmax(0,.82fr) minmax(0,1.18fr);gap:72px;align-items:start}
.section-heading--sticky{position:sticky;top:118px;margin-bottom:0}
.use-cases{border-top:1px solid rgba(16,19,26,.16)}
.use-case{display:grid;grid-template-columns:190px 1fr;gap:28px;padding:28px 0;border-bottom:1px solid rgba(16,19,26,.16)}
.use-case>span{font-size:13px;font-weight:800;letter-spacing:.02em}
.use-case p{margin:0;color:var(--hy-muted);line-height:1.68}

.safety-panel{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:72px}
.safety-panel__intro{align-self:start}
.safety-list{border-top:1px solid var(--hy-line)}
.safety-list__item{display:grid;grid-template-columns:44px 1fr;gap:18px;padding:24px 0;border-bottom:1px solid var(--hy-line)}
.safety-list__item>span{display:flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;background:var(--hy-ink);color:#fff;font-size:10px;font-weight:800}
.safety-list__item strong{display:block;margin:3px 0 6px;font-size:16px}
.safety-list__item p{margin:0;color:var(--hy-muted);line-height:1.62}
.safety-note{grid-column:1/-1;margin-top:4px;padding:22px 24px;border-radius:18px;background:var(--hy-sky);border:1px solid rgba(16,19,26,.08)}
.safety-note strong{display:block;margin-bottom:6px}
.safety-note p{margin:0;color:#4d5968;line-height:1.55}

.stage-grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:72px;align-items:start}
.stage-copy>p{margin:0;color:#bec5cf;font-size:18px;line-height:1.72}
.stage-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.stage-tags span{padding:10px 13px;border:1px solid rgba(255,255,255,.16);border-radius:999px;color:#e8eaf0;font-size:13px}

.site-footer{background:#090b10;color:#fff;padding:72px 0 28px}
.site-footer__top{display:grid;grid-template-columns:1fr auto;gap:48px;align-items:end}
.site-footer h2{max-width:780px;margin:0;font-size:clamp(34px,4.7vw,60px);line-height:1.02;letter-spacing:-.05em}
.site-footer__meta{text-align:right;color:#aeb4c0;line-height:1.7}
.site-footer__meta p{margin:0 0 4px}
.site-footer__meta a{color:#fff;text-underline-offset:4px}
.site-footer__bottom{display:flex;justify-content:space-between;gap:24px;margin-top:64px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);color:#7d8490;font-size:12px}

.content-page{min-height:62vh}
.content-narrow{max-width:840px}
.content-card{background:#fff;border:1px solid var(--hy-line);border-radius:var(--hy-radius);padding:clamp(28px,5vw,56px);box-shadow:var(--hy-shadow)}
.content-card--center{text-align:center}
.content-card h1{margin:0 0 24px;font-size:clamp(40px,5vw,64px);line-height:1.02;letter-spacing:-.05em}
.content-card p{color:var(--hy-muted);line-height:1.75}
.entry-content{font-size:17px;line-height:1.78;color:#3f4650}
.entry-content h2,.entry-content h3{color:var(--hy-ink);letter-spacing:-.03em}
.entry-content a{color:var(--hy-violet);text-underline-offset:3px}

@media (max-width:1000px){
  .hero__grid{grid-template-columns:1fr;gap:48px}
  .hero__copy{max-width:820px}
  .hero__visual{min-height:480px}
  .split-section,.safety-panel,.stage-grid{grid-template-columns:1fr;gap:42px}
  .section-heading--sticky{position:static}
}

@media (max-width:760px){
  .site-shell{width:min(100% - 28px,var(--hy-shell))}
  .section-pad{padding:80px 0}
  .site-header__inner{min-height:66px;gap:16px}
  .site-nav{max-width:64vw;gap:18px;overflow-x:auto;white-space:nowrap;padding:8px 0;scrollbar-width:none}
  .site-nav::-webkit-scrollbar{display:none}
  .hero{padding-top:58px}
  .hero__grid{min-height:0}
  .hero h1{font-size:clamp(48px,15vw,70px)}
  .hero__lede{font-size:18px}
  .hero__visual{min-height:410px;border-radius:30px}
  .lesson-card--main{width:82%;padding:22px}
  .lesson-card strong{font-size:21px}
  .mini-card--listen{right:18px;top:72px}
  .mini-card--play{left:20px;top:28px}
  .mini-card--retry{left:24px;bottom:32px}
  .proof-strip__grid{grid-template-columns:1fr 1fr}
  .proof-strip__grid>div{padding:20px;border-right:1px solid var(--hy-line);border-bottom:1px solid var(--hy-line)}
  .proof-strip__grid>div:nth-child(2n){border-right:0}
  .proof-strip__grid>div:nth-last-child(-n+2){border-bottom:0}
  .proof-strip__grid>div:first-child{padding-left:20px}
  .feature-card{grid-column:span 12;min-height:250px;padding:26px}
  .use-case{grid-template-columns:1fr;gap:8px}
  .site-footer__top{grid-template-columns:1fr}
  .site-footer__meta{text-align:left}
  .site-footer__bottom{flex-direction:column}
}

@media (max-width:520px){
  .brand__word{font-size:14px}
  .site-nav{font-size:12px;max-width:58vw}
  .hero__actions{display:grid;grid-template-columns:1fr}
  .button{width:100%}
  .hero__visual{min-height:360px}
  .lesson-card--main{width:88%;padding:20px}
  .word-row{gap:6px}
  .word-row span{padding:8px 9px;font-size:12px}
  .mini-card{font-size:11px;padding:9px 10px}
  .mini-card--listen{top:58px}
  .mini-card--retry{bottom:20px}
  .section-heading h2,.safety-panel h2,.stage-grid h2{font-size:clamp(36px,11vw,52px)}
  .proof-strip__grid{grid-template-columns:1fr}
  .proof-strip__grid>div,.proof-strip__grid>div:nth-child(2n),.proof-strip__grid>div:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--hy-line)}
  .proof-strip__grid>div:last-child{border-bottom:0}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
}