*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Noto Sans KR",sans-serif;color:#e9edf7;background:#0b0f17;line-height:1.6}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.header{height:76px;background:rgba(10,14,23,.92);backdrop-filter:blur(18px);position:sticky;top:0;z-index:100;border-bottom:1px solid #202735}.nav{height:76px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;font-size:19px;letter-spacing:-.7px;color:#f5f7fb}.brand img{width:37px;height:37px}.brand b{font-weight:900}.desktop-menu{display:flex;gap:30px;font-size:14px;font-weight:700;color:#aab3c5}.desktop-menu a:hover{color:#7d91ff}.menu-btn{display:none;border:0;background:none;color:#fff;font-size:26px}.mobile-menu{display:none}
.hero{position:relative;overflow:hidden;background:#0d1220;min-height:650px;border-bottom:1px solid #1d2431}.hero-bg{position:absolute;inset:0;background:radial-gradient(circle at 78% 35%,rgba(82,104,239,.22),transparent 31%),radial-gradient(circle at 18% 15%,rgba(51,211,165,.10),transparent 25%),linear-gradient(135deg,#0d1220,#101727)}.hero-grid{min-height:650px;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:20px;position:relative}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:800;color:#8294ff;margin-bottom:20px}.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:#58d9ae;margin-right:8px;box-shadow:0 0 12px #58d9ae}.hero h1{font-size:clamp(38px,5vw,66px);line-height:1.18;letter-spacing:-3.5px;margin:0 0 22px;font-weight:900;color:#f4f6fb}.hero h1 strong{color:#7b8dff}.hero-copy>p{max-width:600px;color:#9aa5b8;font-size:17px;line-height:1.8;margin-bottom:30px}.hero-actions{display:flex;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 23px;border-radius:12px;font-weight:800;font-size:14px;transition:.2s}.btn.primary{background:#596df1;color:#fff;box-shadow:0 12px 30px rgba(78,101,240,.25)}.btn.primary:hover{transform:translateY(-2px);box-shadow:0 15px 35px rgba(78,101,240,.35)}.btn.ghost{background:#151c2b;border:1px solid #30394b;color:#e6eaf4}.hero-stats{display:flex;gap:36px;margin-top:45px}.hero-stats div{display:flex;flex-direction:column}.hero-stats strong{font-size:25px;color:#f2f4fa}.hero-stats span{font-size:12px;color:#778196}.hero-visual{display:flex;justify-content:center}.hero-visual img{width:min(470px,100%);filter:drop-shadow(0 25px 40px rgba(0,0,0,.4))}
.quick-nav{background:#101621;border-bottom:1px solid #222a38}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr)}.quick-grid>a{min-height:112px;display:flex;align-items:center;gap:13px;padding:20px 18px;border-right:1px solid #252d3b}.quick-grid>a:first-child{border-left:1px solid #252d3b}.quick-grid>a>span:last-child{margin-left:auto;color:#687388}.quick-grid b{display:block;font-size:14px;color:#edf0f6}.quick-grid small{color:#737e91;font-size:11px}.qicon{width:42px;height:42px;border-radius:13px;display:grid;place-items:center;font-weight:900}.qicon.blue{background:#192344;color:#8293ff}.qicon.purple{background:#281d3e;color:#b38bff}.qicon.orange{background:#3a281a;color:#ffb46e}.qicon.green{background:#142f29;color:#62dfb7}
.section{padding:105px 0;background:#0b0f17}.section.light{background:#0f141e}.section-heading{margin-bottom:45px}.section-heading.split{display:flex;justify-content:space-between;align-items:end;gap:20px}.section-label{font-size:11px;letter-spacing:1.7px;font-weight:900}.blue-text{color:#7e91ff}.purple-text{color:#b18aff}.orange-text{color:#ffb16c}.green-text{color:#56d9aa}.section-heading h2{font-size:36px;letter-spacing:-1.8px;margin:8px 0 5px;color:#f0f3f8}.section-heading p{margin:0;color:#7e899c;font-size:14px}.outline-btn{padding:11px 17px;border:1px solid #343d4d;border-radius:10px;font-size:13px;font-weight:800;background:#141a25;color:#e8ebf2}.outline-btn:hover{border-color:#6578ed;color:#93a1ff}
.learning-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.learn-card{padding:27px;border-radius:18px;border:1px solid #283140;min-height:310px;background:#121925;position:relative;overflow:hidden;transition:.25s;box-shadow:0 12px 35px rgba(0,0,0,.12)}.learn-card:hover{transform:translateY(-5px);border-color:#3b465a;box-shadow:0 20px 45px rgba(0,0,0,.24)}.learn-card:after{content:"";position:absolute;width:130px;height:130px;border-radius:50%;right:-60px;top:-55px;opacity:.35}.web-card:after{background:#5268ef}.app-card:after{background:#9a5ee8}.basic-card:after{background:#2bbd93}.windows-card:after{background:#df863d}.card-top{display:flex;justify-content:space-between;align-items:center}.category-icon{font-size:11px;font-weight:900;padding:7px 9px;border-radius:8px;background:#1d2533;color:#bac3d4}.count{font-size:9px;color:#667286;font-weight:800}.learn-card h3{font-size:22px;margin:28px 0 8px;letter-spacing:-1px;color:#f0f2f7}.learn-card p{font-size:12px;color:#8994a7;min-height:58px}.tags{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0}.tags span{font-size:10px;padding:5px 8px;border-radius:6px;background:#1b2330;color:#aab4c5;font-weight:700}.more{position:absolute;bottom:25px;font-size:12px;font-weight:800;color:#cbd2df}.more span{margin-left:8px;color:#8393ff}
.edu-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.edu-card{background:#141a25;border:1px solid #293241;border-radius:16px;padding:25px;min-height:230px;display:flex;flex-direction:column}.edu-card.featured{grid-column:span 2;background:linear-gradient(135deg,#3d4cae,#5941a0);color:#fff;border:0}.edu-badge{font-size:9px;letter-spacing:1.3px;font-weight:900;opacity:.75}.edu-card h3{font-size:20px;line-height:1.4;margin:16px 0 8px;letter-spacing:-1px;color:#f2f4f9}.featured h3{font-size:25px}.edu-card p{font-size:12px;color:#8490a3;line-height:1.7;margin:0}.featured p{color:rgba(255,255,255,.72)}.edu-bottom{margin-top:auto;padding-top:20px;display:flex;justify-content:space-between;font-size:10px}.mini-icon{width:35px;height:35px;border-radius:10px;background:#251f3c;color:#b18aff;display:grid;place-items:center;font-weight:900}.edu-card a{margin-top:auto;font-size:11px;font-weight:900;color:#c8cfdd}
.challenge-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}.challenge-main{border-radius:18px;background:#111823;border:1px solid #293241;padding:28px}.challenge-header{display:flex;justify-content:space-between;font-size:11px;font-weight:900;color:#929daf}.challenge-header em{font-style:normal;color:#ffb36e;background:#33271c;padding:5px 9px;border-radius:6px;font-size:9px}.challenge-main h3{font-size:26px;margin:30px 0 5px;color:#f0f3f8}.challenge-main>p{font-size:13px;color:#858fa2}.code-preview{margin:22px 0;background:#080c12;color:#dfe5f5;border:1px solid #202937;border-radius:12px;padding:17px;font-family:monospace;font-size:11px;display:flex;gap:15px;line-height:1.7;box-shadow:inset 0 0 30px rgba(0,0,0,.2)}.line-no{color:#566174}.challenge-footer{display:flex;align-items:center;justify-content:space-between;font-size:11px;color:#7d889b}.btn.dark{background:#e9edf6;color:#151b27}.challenge-list{border:1px solid #293241;border-radius:18px;overflow:hidden;background:#121925}.challenge-item{min-height:89px;padding:15px 18px;display:flex;align-items:center;gap:15px;border-bottom:1px solid #252e3c}.challenge-item:last-child{border-bottom:0}.challenge-item .num{font-size:11px;font-weight:900;color:#667287}.challenge-item div{flex:1}.challenge-item b{display:block;font-size:13px;color:#e8ebf2}.challenge-item small{color:#7d889b;font-size:10px}.challenge-item>span:last-child{color:#788499}.project-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.project-tags span{padding:9px 12px;border:1px solid #293241;border-radius:9px;font-size:11px;font-weight:700;color:#8e99ab;background:#111722}
.dark-section{background:#070b11;color:#fff;border-top:1px solid #1b2330;border-bottom:1px solid #1b2330}.dark-heading h2{color:#f3f5f9}.dark-heading p{color:#858fa2}.light-btn{background:#111722;color:#fff;border-color:#3a4455}.community-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.meet-card{background:#121925;border:1px solid #293241;border-radius:17px;padding:23px}.meet-card:hover{border-color:#3a4659}.meet-top{display:flex;justify-content:space-between;align-items:center}.meet-type{background:#1d2942;color:#91a5ff;padding:6px 9px;border-radius:6px;font-size:9px;font-weight:900}.meet-type.purple{color:#d0a7ff;background:#2a2140}.meet-type.orange{color:#ffc080;background:#39281c}.status{font-size:9px;color:#59d9ad}.meet-card h3{font-size:19px;margin:22px 0 6px;color:#f1f3f8}.meet-card p{font-size:11px;color:#8994a6;min-height:38px}.meet-meta{display:flex;flex-direction:column;gap:5px;font-size:10px;color:#788499;margin:20px 0}.meet-bottom{border-top:1px solid #293241;padding-top:16px;display:flex;justify-content:space-between;align-items:center}.avatars{display:flex;align-items:center}.avatars i,.avatars b{font-style:normal;width:27px;height:27px;border-radius:50%;background:#4e5c9c;border:2px solid #121925;margin-right:-6px;display:grid;place-items:center;font-size:8px}.avatars i:nth-child(2){background:#735796}.avatars i:nth-child(3){background:#397e71}.avatars b{background:#293241;color:#aeb7c7}.meet-bottom button{border:0;background:#e9edf5;color:#171d29;padding:9px 14px;border-radius:8px;font-weight:900;font-size:10px;cursor:pointer}.meet-bottom button.joined{background:#51cfa4;color:#10271f}.calendar-strip{margin-top:25px;border-top:1px solid #293241;padding-top:20px;display:flex;align-items:center;gap:7px}.calendar-strip>div{width:60px;text-align:center;padding:7px;border-radius:8px}.calendar-strip>div.active{background:#5268ef}.calendar-strip b,.calendar-strip small{display:block}.calendar-strip b{font-size:15px}.calendar-strip small{font-size:8px;color:#707b8e}.calendar-strip .active small{color:#dce1ff}.calendar-strip button{margin-left:auto;border:0;background:transparent;color:#929cad;font-size:11px;font-weight:800}
.cta{background:linear-gradient(110deg,#3f51bc,#5a42a6);color:#fff}.cta-inner{min-height:230px;display:flex;align-items:center;justify-content:space-between;gap:20px}.cta-inner span{font-size:10px;letter-spacing:2px;font-weight:900;opacity:.7}.cta h2{font-size:32px;margin:5px 0}.cta p{margin:0;opacity:.75;font-size:13px}.cta .btn{background:#f3f5fa;color:#3e50b9}
.footer{background:#080c12;color:#7f899b;padding:45px 0 22px}.footer-grid{display:flex;justify-content:space-between;gap:30px}.footer-brand{color:#fff}.footer-grid p{font-size:11px;margin:15px 0}.footer-links{display:flex;gap:22px;font-size:11px}.copyright{border-top:1px solid #202734;margin-top:30px;padding-top:18px;font-size:9px;color:#5d687b}
@media(max-width:980px){.desktop-menu{display:none}.menu-btn{display:block}.mobile-menu{display:none;position:absolute;top:76px;left:0;right:0;background:#101621;border-bottom:1px solid #283140;padding:12px 20px;box-shadow:0 10px 20px rgba(0,0,0,.25)}.mobile-menu.open{display:flex;flex-direction:column}.mobile-menu a{padding:12px 0;font-weight:700;font-size:13px;color:#dbe0ea}.hero-grid{grid-template-columns:1fr}.hero{min-height:auto}.hero-copy{padding:75px 0 20px}.hero-visual{padding:20px 0 65px}.quick-grid{grid-template-columns:repeat(2,1fr)}.learning-grid{grid-template-columns:repeat(2,1fr)}.edu-grid{grid-template-columns:repeat(2,1fr)}.edu-card.featured{grid-column:span 2}.challenge-layout{grid-template-columns:1fr}.community-grid{grid-template-columns:1fr}.calendar-strip{overflow:auto}.footer-grid{flex-direction:column}.footer-links{flex-wrap:wrap}}
@media(max-width:600px){.container{width:min(100% - 28px,1180px)}.header,.nav{height:66px}.mobile-menu{top:66px}.brand{font-size:16px}.brand img{width:32px}.hero-copy{padding-top:55px}.hero h1{font-size:39px;letter-spacing:-2.5px}.hero-copy>p{font-size:14px}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-stats{gap:20px;margin-top:30px}.hero-stats strong{font-size:21px}.quick-grid{grid-template-columns:1fr}.quick-grid>a{border-left:1px solid #252d3b!important}.section{padding:70px 0}.section-heading.split{align-items:start;flex-direction:column}.section-heading h2{font-size:29px}.learning-grid,.edu-grid{grid-template-columns:1fr}.edu-card.featured{grid-column:auto}.learn-card{min-height:280px}.challenge-main{padding:20px}.challenge-footer{gap:10px}.project-tags span{font-size:10px}.calendar-strip{display:none}.cta-inner{padding:45px 0;align-items:flex-start;flex-direction:column}.cta h2{font-size:27px}.footer-links{gap:12px}.footer-links a{font-size:10px}}