:root{
  --ink:#0E1726; --ink2:#1B2740; --ink3:#2A3A5A;
  --paper:#F7F3EA; --paper2:#EFE9DB; --white:#FFFDF8;
  --line:rgba(14,23,38,.12); --line-l:rgba(247,243,234,.16);
  --teal:#0F9D8A; --teal-l:#14B8A6; --gold:#E0A526; --gold-d:#B97F0A; --coral:#E4572E;
  --txt:#1C2433; --mute:#5B6475;
  --f-display:"RA Neo","RA Round",system-ui,sans-serif;
  --f-body:"RA Barun","RA Gothic",system-ui,sans-serif;
  --f-serif:"RA Myeongjo",serif;
  --f-ui:"RA Round","RA Barun",sans-serif;
  --f-label:"RA Square","RA Barun",sans-serif;
  --f-mono:"RA Code",ui-monospace,monospace;
  --r:18px; --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--txt);font:400 16px/1.75 var(--f-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);margin:0;letter-spacing:-.02em;line-height:1.2;color:var(--ink)}
p{margin:0}
h1,h2,h3,p,li,summary,dd,dt{word-break:keep-all;overflow-wrap:break-word}
h1,h2{text-wrap:balance}
p{text-wrap:pretty}
ul,ol{margin:0;padding:0;list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:820px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:12px}
.code{font-family:var(--f-mono)}
:focus-visible{outline:3px solid var(--gold);outline-offset:3px;border-radius:6px}

/* icons */
svg.ic{width:1.15em;height:1.15em;flex:none;fill:currentColor;vertical-align:-.18em}
svg.ic--l{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.ico{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:15px;background:var(--ink);color:var(--gold);font-size:26px}
.ico--sm{width:44px;height:44px;border-radius:13px;font-size:22px;background:var(--paper2);color:var(--ink)}
.ico--lg{width:64px;height:64px;font-size:32px;flex:none}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:999px;font:700 15px/1 var(--f-ui);text-decoration:none;border:2px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:hover{transform:translateY(-2px)}
.btn--sm{padding:9px 16px;font-size:14px}
.btn--lg{padding:16px 28px;font-size:16px}
.btn--gold{background:var(--gold);color:var(--ink);box-shadow:0 8px 22px -8px rgba(224,165,38,.75)}
.btn--gold:hover{background:#EBB43A}
.btn--ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn--ghost:hover{background:var(--ink);color:var(--paper)}
.btn--line{border-color:var(--ink);color:var(--ink)}
.btn--line:hover{background:var(--ink);color:var(--paper)}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(247,243,234,.86);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--line)}
.nav__in{display:flex;align-items:center;gap:20px;height:68px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font:600 18px/1 var(--f-display);color:var(--ink)}
.brand svg.logo{width:34px;height:34px}
.brand__txt b{font-weight:800}
.nav__links{display:flex;gap:4px;margin-left:auto}
.nav__links a{padding:8px 13px;border-radius:999px;text-decoration:none;font:600 14.5px/1 var(--f-ui);color:var(--ink3)}
.nav__links a:hover{background:var(--paper2);color:var(--ink)}
.nav__burger{display:none;margin-left:auto;border:0;background:transparent;font-size:28px;color:var(--ink);cursor:pointer;padding:6px}

/* hero */
.hero{position:relative;overflow:hidden;padding:72px 0 88px}
.hero__grid{position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 70% 80% at 70% 30%,#000 10%,transparent 72%);opacity:.7}
.hero__in{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font:800 12.5px/1 var(--f-label);letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:20px}
.eyebrow--light{color:var(--gold)}
.dot{width:9px;height:9px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px rgba(224,165,38,.25)}
.hero__h{font-weight:800;font-size:clamp(2.4rem,5.4vw,4.3rem);line-height:1.12}
.hl{position:relative;z-index:0;white-space:nowrap}
.hl::after{content:"";position:absolute;left:-3px;right:-3px;bottom:.06em;height:.34em;background:var(--gold);opacity:.55;z-index:-1;border-radius:4px;transform:skew(-6deg)}
.hl--gold::after{background:var(--gold);opacity:.9}
.hero__lead{margin-top:24px;font-size:clamp(1.02rem,1.5vw,1.15rem);color:var(--ink3);max-width:34em}
.hero__lead b{color:var(--ink);background:linear-gradient(transparent 62%,rgba(224,165,38,.4) 0)}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hand{margin-top:14px;display:flex;align-items:flex-start;gap:6px;color:var(--teal);font:400 26px/1.1 "RA Pen",cursive;transform:rotate(-2deg)}
.hand svg{margin-top:4px}
.stats{display:grid;grid-template-columns:repeat(4,auto);gap:12px 36px;justify-content:start;margin:34px 0 0;padding-top:26px;border-top:1px solid var(--line)}
.stats dt{font:700 12.5px/1 var(--f-label);color:var(--mute);letter-spacing:.06em}
.stats dd{margin:8px 0 0;font:800 clamp(1.7rem,3vw,2.3rem)/1 var(--f-serif);color:var(--ink)}

/* hero mock */
.hero__shot{position:relative}
.shot{background:var(--ink);color:var(--paper);border-radius:22px;box-shadow:0 40px 70px -30px rgba(14,23,38,.6),0 0 0 1px rgba(255,255,255,.06) inset;overflow:hidden;transform:rotate(1.2deg)}
.shot__bar{display:flex;align-items:center;gap:7px;padding:13px 16px;border-bottom:1px solid var(--line-l);font:700 13px/1 var(--f-ui);color:rgba(247,243,234,.7)}
.shot__bar i{width:10px;height:10px;border-radius:50%;background:#3b4a68}
.shot__bar span{margin-left:8px}
.shot__body{padding:20px}
.shot__lv{display:flex;align-items:center;gap:14px}
.shot__badge{width:54px;height:54px;border-radius:16px;background:var(--gold);color:var(--ink);display:grid;place-items:center;font:800 20px/1 var(--f-mono)}
.shot__k{font:600 12px/1 var(--f-label);color:rgba(247,243,234,.55)}
.shot__v{font:800 18px/1.3 var(--f-display);margin-top:4px}
.shot__v small{font:400 12px var(--f-body);opacity:.6;margin-left:4px}
.shot__streak{margin-left:auto;font:700 13px/1 var(--f-ui);color:#FFB085;display:inline-flex;gap:4px;align-items:center}
.xp{margin:20px 0;padding:14px 16px;background:var(--ink2);border-radius:14px}
.xp__row{display:flex;justify-content:space-between;font:600 13px/1 var(--f-ui);color:rgba(247,243,234,.75)}
.xp__row b{color:var(--gold);font-weight:700}
.xp__bar{height:9px;background:rgba(255,255,255,.1);border-radius:9px;margin:11px 0 9px;overflow:hidden}
.xp__bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal-l),var(--gold));border-radius:9px;transition:width 1.4s cubic-bezier(.22,1,.36,1)}
.xp__next{font:400 12px var(--f-body);color:rgba(247,243,234,.5)}
.mis{display:grid;gap:9px}
.mis li{display:grid;grid-template-columns:38px 1fr 74px;align-items:center;gap:12px;padding:10px 12px;background:var(--ink2);border-radius:13px}
.mis__i{width:38px;height:38px;border-radius:11px;background:color-mix(in srgb,var(--c,#556) 22%,transparent);color:var(--c,#7a8499);display:grid;place-items:center;font-size:21px}
.mis b{display:block;font:700 14px/1.3 var(--f-ui)}
.mis em{display:block;font:400 11.5px/1.3 var(--f-body);color:rgba(247,243,234,.5);font-style:normal;margin-top:2px}
.mis__p{height:6px;background:rgba(255,255,255,.1);border-radius:6px;overflow:hidden}
.mis__p u{display:block;height:100%;background:var(--teal-l);border-radius:6px}
.is-lock{opacity:.55}
.chip{position:absolute;display:inline-flex;gap:7px;align-items:center;padding:10px 15px;background:var(--white);border-radius:999px;box-shadow:0 14px 30px -12px rgba(14,23,38,.35);font:700 13px/1 var(--f-ui);color:var(--ink);animation:float 5s ease-in-out infinite}
.chip svg{color:var(--teal);font-size:18px}
.chip--a{left:-26px;bottom:-16px}
.chip--b{right:-12px;top:-18px;animation-delay:-2.2s}
@keyframes float{50%{transform:translateY(-8px)}}

/* sections */
.sec{padding:104px 0}
.sec--tight{padding:72px 0 88px}
.sec--paper2{background:var(--paper2)}
.sec--ink{background:var(--ink);color:var(--paper)}
.sec--ink h2,.sec--ink h3{color:var(--paper)}
.sec__h{max-width:760px;margin:0 auto 52px;text-align:center}
.sec__h h2{font-weight:800;font-size:clamp(1.8rem,3.8vw,2.9rem)}
.sec__sub{margin-top:18px;color:var(--mute);font-size:1.05rem}
.sec__sub--left{margin-top:18px}
.sec--ink .sec__sub{color:rgba(247,243,234,.7)}
.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{padding:30px;background:var(--white);border:1px solid var(--line);border-radius:var(--r);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-4px);box-shadow:0 24px 40px -24px rgba(14,23,38,.35)}
.card h3{font-size:1.2rem;margin:18px 0 8px}
.card p{font-family:var(--f-human,var(--f-body));color:var(--mute);font-size:.98rem}
.card p,.faq p{font-family:"RA Human",var(--f-body)}

/* curriculum */
.cur{display:grid;grid-template-columns:340px 1fr;gap:22px;align-items:start}
.cur__tabs{display:grid;gap:8px}
.tab{display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:12px;text-align:left;padding:13px 16px;background:var(--white);border:1.5px solid var(--line);border-radius:14px;cursor:pointer;font:inherit;color:inherit;transition:all .2s}
.tab:hover{border-color:var(--ink3)}
.tab[aria-selected="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateX(6px)}
.tab__i{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;font-size:22px;background:color-mix(in srgb,var(--c) 18%,transparent);color:var(--c)}
.tab[aria-selected="true"] .tab__i{background:var(--c);color:var(--ink)}
.tab b{display:block;font:700 15px/1.3 var(--f-ui)}
.tab small{display:block;font:400 12px/1.3 var(--f-body);opacity:.65}
.tab__n{font:700 13px var(--f-mono);opacity:.7}
.cur__panel{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:34px;min-height:100%}
.pnl__h{display:flex;align-items:center;gap:14px;margin-bottom:8px}
.pnl__h h3{font-size:1.6rem}
.pnl__tag{font:700 12px/1 var(--f-mono);padding:6px 10px;border-radius:999px;background:var(--paper2)}
.pnl__lead{color:var(--mute);margin-bottom:22px;font-family:"RA Human",var(--f-body)}
.les{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.les li{display:flex;gap:12px;padding:12px 14px;border-radius:12px;background:var(--paper);align-items:flex-start;font-family:"RA Human",var(--f-body)}
.les i{font:700 12px/1.9 var(--f-mono);font-style:normal;color:var(--teal);min-width:26px}
.les b{display:block;font-weight:700;font-size:15px;line-height:1.4}
.les small{display:block;color:var(--mute);font-size:12.5px}
.les li.is-case{background:rgba(224,165,38,.18)}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:s}
.steps li{position:relative;padding:26px 20px;background:var(--white);border:1px solid var(--line);border-radius:var(--r)}
.steps__n{position:absolute;top:16px;right:18px;font:800 34px/1 var(--f-serif);color:var(--gold);opacity:.75}
.steps h3{font-size:1.02rem;margin:16px 0 6px}
.steps p{font-size:.92rem;color:var(--mute);font-family:"RA Human",var(--f-body)}

/* knowledge */
.split{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.split h2{font-weight:800;font-size:clamp(1.8rem,3.6vw,2.7rem)}
.ticks{margin-top:26px;display:grid;gap:12px}
.ticks li{display:flex;gap:10px;align-items:center;font-family:"RA Human",var(--f-body);font-weight:600}
.ticks svg{color:var(--teal);flex:none;width:1.3em;height:1.3em}
.kc{background:var(--white);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 30px 50px -30px rgba(14,23,38,.35)}
.kc__search{display:flex;gap:10px;align-items:center;padding:13px 16px;background:var(--paper);border-radius:13px;font:600 15px var(--f-ui);color:var(--ink3)}
.kc__res{padding:22px 6px 6px}
.kc__t{font:800 1.35rem/1.3 var(--f-display)}
.kc__t em{font:400 .85rem var(--f-serif);font-style:italic;color:var(--mute);margin-left:6px}
.kc__e{margin:12px 0;color:var(--txt);font-family:"RA Gothic",var(--f-body)}
.kc__e b{background:linear-gradient(transparent 60%,rgba(224,165,38,.45) 0)}
.kc__x{padding:13px 15px;border-left:4px solid var(--teal);background:rgba(20,184,166,.08);border-radius:0 11px 11px 0;font-size:.93rem;font-family:"RA Gothic",var(--f-body)}
.kc__x b{display:block;font-size:12px;color:var(--teal);margin-bottom:3px}
.kc__m{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}
.kc__m span{font:600 12px var(--f-mono);padding:5px 9px;background:var(--paper2);border-radius:7px;color:var(--ink3)}

/* roadmap */
.road{display:grid;grid-template-columns:repeat(5,1fr);gap:0;position:relative;margin-bottom:56px}
.road::before{content:"";position:absolute;left:10%;right:10%;top:34px;height:3px;background:repeating-linear-gradient(90deg,var(--ink3) 0 8px,transparent 8px 16px);opacity:.35}
.road li{position:relative;text-align:center;padding:0 10px}
.road__c{position:relative;display:grid;place-items:center;width:68px;height:68px;margin:0 auto 16px;border-radius:50%;background:var(--white);border:3px solid var(--ink);font:800 20px var(--f-mono);color:var(--ink);transition:transform .3s}
.road li:hover .road__c{transform:scale(1.1) rotate(-6deg)}
.road li:nth-child(n+3) .road__c{background:var(--ink);color:var(--gold)}
.road .is-goal .road__c{background:var(--gold);color:var(--ink);border-color:var(--gold);box-shadow:0 0 0 8px rgba(224,165,38,.28)}
.road h3{font-size:1.1rem}
.road__en{font:italic 400 13px var(--f-serif);color:var(--mute);margin:4px 0 8px}
.road__xp{display:inline-block;font-size:12.5px;padding:4px 10px;border-radius:999px;background:var(--white);border:1px solid var(--line)}
.comp{background:var(--white);border:1px solid var(--line);border-radius:var(--r);padding:30px;text-align:center}
.comp__h{font-size:1.15rem;margin-bottom:20px}
.comp__l{display:grid;grid-template-columns:repeat(6,1fr);gap:12px}
.comp__l li{display:flex;flex-direction:column;align-items:center;gap:10px;padding:16px 8px;background:var(--paper);border-radius:14px;font:700 13.5px/1.3 var(--f-ui)}
.comp__l svg{width:28px;height:28px;color:var(--teal)}

/* certs */
.certs{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.cert{padding:24px 18px;text-align:center;background:var(--white);border:1px solid var(--line);border-top:5px solid var(--c);border-radius:var(--r)}
.cert .ico{background:color-mix(in srgb,var(--c) 18%,transparent);color:var(--c);margin-bottom:12px}
.cert h3{font-size:1.08rem}
.cert__en{font:italic 400 13px var(--f-serif);color:var(--mute);margin:3px 0 10px}
.cert__th{font-size:12.5px;display:inline-block;padding:4px 10px;background:var(--paper);border-radius:999px}
.passport{display:flex;gap:22px;align-items:center;margin-top:20px;padding:28px 32px;background:var(--ink);color:var(--paper);border-radius:var(--r)}
.passport h3{color:var(--gold);font-size:1.3rem;margin-bottom:6px}
.passport p{color:rgba(247,243,234,.75);font-family:"RA Human",var(--f-body)}
.passport .ico{background:var(--gold);color:var(--ink)}

/* flow */
.flow{display:grid;grid-template-columns:repeat(7,1fr);gap:10px}
.flow li{padding:18px 8px;text-align:center;background:var(--white);border:1px solid var(--line);border-radius:14px;font:700 14px/1.35 var(--f-ui)}
.flow b{display:grid;place-items:center;width:32px;height:32px;margin:0 auto 10px;border-radius:50%;background:var(--ink);color:var(--gold);font:700 14px var(--f-mono)}

/* faq */
.faq{display:grid;gap:10px}
.faq details{background:var(--white);border:1px solid var(--line);border-radius:14px;padding:0 22px}
.faq summary{cursor:pointer;list-style:none;padding:19px 0;font:700 16px/1.4 var(--f-ui);display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font:400 26px/1 var(--f-mono);color:var(--teal);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{padding:0 0 20px;color:var(--mute)}

/* join */
.form{display:grid;gap:16px;padding:34px;background:var(--ink2);border:1px solid var(--line-l);border-radius:24px}
.fld{display:grid;gap:7px}
.fld span{font:700 13px/1 var(--f-ui);color:rgba(247,243,234,.8)}
.fld input,.fld select{font:400 16px var(--f-body);font-family:"RA Gothic",var(--f-body);padding:14px 16px;border-radius:12px;border:1.5px solid var(--line-l);background:var(--ink);color:var(--paper)}
.fld input::placeholder{color:rgba(247,243,234,.35)}
.fld input:focus,.fld select:focus{outline:none;border-color:var(--gold)}
.chk{display:flex;gap:10px;align-items:flex-start;font-size:.88rem;color:rgba(247,243,234,.7)}
.chk input{margin-top:.35em;accent-color:var(--gold);width:18px;height:18px}
.form .btn{justify-self:start}
.form__msg{min-height:1.5em;font:600 14px/1.5 var(--f-ui)}
.form__msg.is-ok{color:#6EE7C8}
.form__msg.is-err{color:#FF9B85}

/* footer */
.foot{background:#080E19;color:rgba(247,243,234,.75);padding:56px 0 30px;font-family:"RA GothicEco",var(--f-body)}
.foot__in{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap;padding-bottom:28px;border-bottom:1px solid var(--line-l)}
.brand--foot{color:var(--paper)}
.foot__tag{margin-top:14px;font:400 1.6rem/1.3 "RA Brush",serif;color:var(--gold)}
.foot__nav{display:flex;gap:6px 22px;flex-wrap:wrap;align-self:flex-start}
.foot__nav a{text-decoration:none;font-size:14px}
.foot__nav a:hover{color:var(--gold)}
.foot__legal{padding-top:22px;font-size:12.5px;display:grid;gap:6px;opacity:.7}
.foot__legal a{color:var(--gold)}

/* reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s cubic-bezier(.22,1,.36,1),transform .8s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .chip{animation:none}
  .xp__bar i{transition:none}
}

/* responsive */
@media (max-width:980px){
  .hero__in,.split{grid-template-columns:1fr;gap:44px}
  .cur{grid-template-columns:1fr}
  .cur__tabs{grid-template-columns:repeat(2,1fr)}
  .tab[aria-selected="true"]{transform:none}
  .cards3{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:repeat(2,1fr)}
  .comp__l{grid-template-columns:repeat(3,1fr)}
    .flow{grid-template-columns:repeat(4,1fr)}
  .road{grid-template-columns:1fr;gap:26px}
  .road::before{display:none}
  .chip--a{left:6px}.chip--b{right:6px}
}
@media (max-width:760px){
  .nav__links{position:fixed;inset:68px 0 auto 0;flex-direction:column;background:var(--paper);padding:14px 24px 22px;border-bottom:1px solid var(--line);display:none;margin:0}
  .nav__links.open{display:flex}
  .nav__links a{padding:13px 8px;font-size:16px}
  .nav__burger{display:block}
  .nav__cta,.nav__login{display:none}
  .sec{padding:76px 0}
  .stats{grid-template-columns:repeat(2,auto)}
  .les{grid-template-columns:1fr}
  .cur__tabs{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
  .passport{flex-direction:column;align-items:flex-start}
  .comp__l{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:1fr}
  .hl{white-space:normal}
}
.nav__login{margin-left:4px}
.flow__cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px}