:root{--primary: #1e3a8a;--primary-light: #3b82f6;--primary-bg: #eff6ff;--accent: #06b6d4;--dark: #0f172a;--gray-700: #334155;--gray-500: #64748b;--gray-300: #cbd5e1;--gray-100: #f1f5f9;--white: #ffffff;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(15, 23, 42, .08);--shadow-lg: 0 12px 40px rgba(15, 23, 42, .12);--transition: .3s ease;--max-width: 1100px}.navbar{position:fixed;top:0;left:0;right:0;z-index:100;background:#ffffffeb;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--gray-300)}.nav-container{max-width:var(--max-width);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}.nav-logo{display:flex;align-items:center;gap:4px;cursor:pointer;font-weight:700;font-size:1.25rem}.logo-zero{color:var(--primary);font-weight:800;font-size:1.5rem}.logo-one{color:var(--accent);font-weight:800;font-size:1.5rem}.logo-text{margin-left:8px;color:var(--dark);font-size:1.1rem}.nav-links{display:flex;list-style:none;gap:8px}.nav-links button{background:none;padding:8px 16px;font-size:.95rem;color:var(--gray-700);border-radius:var(--radius-sm)}.nav-links button:hover{color:var(--primary);background:var(--primary-bg)}.hamburger{display:none;flex-direction:column;gap:5px;background:none;padding:8px}.hamburger span{display:block;width:22px;height:2px;background:var(--dark);transition:var(--transition);border-radius:2px}.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:100px 24px 60px;overflow:hidden;background:linear-gradient(135deg,#eff6ff,#e0f2fe,#f0f9ff)}.hero-bg-pattern{position:absolute;inset:0;background-image:radial-gradient(circle at 20% 50%,rgba(59,130,246,.08) 0%,transparent 50%),radial-gradient(circle at 80% 20%,rgba(6,182,212,.08) 0%,transparent 50%),radial-gradient(circle at 60% 80%,rgba(30,58,138,.05) 0%,transparent 50%);pointer-events:none}.hero-content{position:relative;z-index:1;max-width:700px}.hero-badge{display:inline-block;padding:6px 20px;background:var(--white);border:1px solid var(--gray-300);border-radius:100px;font-size:.85rem;color:var(--gray-700);margin-bottom:28px;box-shadow:0 2px 8px #0000000a}.hero-title{display:flex;flex-direction:column;gap:8px;margin-bottom:20px}.hero-title-main{font-size:3.5rem;font-weight:800;color:var(--primary);letter-spacing:-1px}.hero-title-en{font-size:1.5rem;font-weight:600;color:var(--accent);letter-spacing:4px;text-transform:uppercase}.hero-subtitle{font-size:1.25rem;color:var(--gray-700);font-weight:500;margin-bottom:16px}.hero-desc{font-size:1rem;color:var(--gray-500);line-height:1.8;margin-bottom:36px}.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.btn{padding:14px 32px;border-radius:var(--radius);font-size:1rem;font-weight:600}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{background:#1e40af;transform:translateY(-2px);box-shadow:0 8px 24px #1e3a8a40}.btn-outline{background:var(--white);color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background:var(--primary-bg);transform:translateY(-2px)}.hero-scroll-indicator{position:absolute;bottom:32px;display:flex;flex-direction:column;align-items:center;gap:8px;cursor:pointer;color:var(--gray-500);font-size:.8rem;animation:bounce 2s infinite}.scroll-arrow{width:20px;height:20px;border-right:2px solid var(--gray-500);border-bottom:2px solid var(--gray-500);transform:rotate(45deg)}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(8px)}}.section{padding:100px 24px}.container{max-width:var(--max-width);margin:0 auto}.section-header{text-align:center;margin-bottom:56px}.section-label{display:inline-block;font-size:.8rem;font-weight:700;color:var(--accent);text-transform:uppercase;letter-spacing:3px;margin-bottom:12px}.section-header h2{font-size:2.2rem;font-weight:800;color:var(--dark)}.about{background:var(--white)}.about-content{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}.about-lead{font-size:1.15rem;color:var(--dark);margin-bottom:16px;line-height:1.8}.about-text p{color:var(--gray-700);line-height:1.8}.about-keywords{display:flex;flex-direction:column;gap:24px}.keyword-item{display:flex;gap:16px;align-items:flex-start;padding:20px;background:var(--gray-100);border-radius:var(--radius);transition:var(--transition)}.keyword-item:hover{background:var(--primary-bg);transform:translate(4px)}.keyword-icon{font-size:1.8rem;flex-shrink:0}.keyword-item h4{font-size:1rem;color:var(--dark);margin-bottom:4px}.keyword-item p{font-size:.9rem;color:var(--gray-500)}.activities{background:var(--gray-100)}.activity-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.activity-card{background:var(--white);border-radius:var(--radius);padding:36px 28px;box-shadow:var(--shadow);transition:var(--transition);border:1px solid transparent}.activity-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}.card-icon{font-size:2.5rem;margin-bottom:16px}.activity-card h3{font-size:1.25rem;color:var(--dark);margin-bottom:6px}.card-subtitle{font-size:.85rem;color:var(--accent);font-weight:600;margin-bottom:16px}.activity-card ul{list-style:none;display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.activity-card li{font-size:.9rem;color:var(--gray-700);padding-left:16px;position:relative}.activity-card li:before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--primary-light)}.card-tools{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto}.tool-tag{font-size:.75rem;padding:4px 10px;background:var(--primary-bg);color:var(--primary);border-radius:100px;font-weight:500}.history{background:var(--white)}.history-timeline{position:relative;padding-left:32px}.history-year{display:inline-block;font-size:1.6rem;font-weight:800;color:var(--primary);background:var(--primary-bg);padding:6px 24px;border-radius:100px;margin-bottom:32px}.history-items{position:relative;display:flex;flex-direction:column;gap:24px;padding-left:24px;border-left:3px solid var(--gray-300)}.history-item{position:relative;display:flex;gap:20px;padding:24px 28px;background:var(--gray-100);border-radius:var(--radius);transition:var(--transition)}.history-item:before{content:"";position:absolute;left:-37px;top:32px;width:12px;height:12px;border-radius:50%;background:var(--gray-300);border:3px solid var(--white)}.history-item-highlight{background:var(--primary-bg);border:1px solid var(--primary-light)}.history-item-highlight:before{background:var(--primary-light);width:14px;height:14px;left:-38px}.history-item:hover{transform:translate(4px)}.history-item-icon{font-size:2rem;flex-shrink:0;margin-top:2px}.history-item-content h4{font-size:1.1rem;color:var(--dark);margin-bottom:8px}.history-item-content p{font-size:.95rem;color:var(--gray-700);line-height:1.7}.history-stats{display:flex;gap:24px;margin-top:20px;flex-wrap:wrap}.history-stat{display:flex;flex-direction:column;gap:2px;padding:12px 20px;background:var(--white);border-radius:var(--radius-sm);min-width:120px}.history-stat-value{font-size:1.25rem;font-weight:800;color:var(--primary)}.history-stat-label{font-size:.75rem;color:var(--gray-500);font-weight:500}.benefits{background:var(--white)}.benefits-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px}.benefit-item{padding:32px;border-radius:var(--radius);background:var(--gray-100);transition:var(--transition)}.benefit-item:hover{background:var(--primary-bg)}.benefit-number{font-size:2rem;font-weight:800;color:var(--accent);margin-bottom:12px;opacity:.7}.benefit-item h4{font-size:1.15rem;color:var(--dark);margin-bottom:8px}.benefit-item p{font-size:.95rem;color:var(--gray-700);line-height:1.7}.join{background:linear-gradient(135deg,#eff6ff,#e0f2fe)}.join-content{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}.join-card{background:var(--white);border-radius:var(--radius);padding:36px;box-shadow:var(--shadow)}.join-card h3{font-size:1.25rem;color:var(--primary);margin-bottom:24px;padding-bottom:12px;border-bottom:2px solid var(--primary-bg)}.join-list{list-style:none;display:flex;flex-direction:column;gap:16px}.join-list li{display:flex;align-items:flex-start;gap:12px;font-size:.95rem;color:var(--gray-700);line-height:1.6}.check-icon{flex-shrink:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:var(--accent);color:var(--white);border-radius:50%;font-size:.75rem;font-weight:700;margin-top:2px}.team{background:var(--gray-100)}.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.team-card{background:var(--white);border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow);transition:var(--transition);border:2px solid transparent}.team-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.team-card-leader{border-color:var(--primary-light)}.team-role{display:inline-block;font-size:.8rem;font-weight:700;padding:4px 14px;border-radius:100px;background:var(--primary-bg);color:var(--primary);margin-bottom:12px}.team-card-leader .team-role{background:var(--primary);color:var(--white)}.team-name{font-size:1.35rem;color:var(--dark);margin-bottom:20px}.team-detail{display:flex;flex-direction:column;gap:14px}.team-detail-row{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--gray-700)}.team-detail-label{font-size:.75rem;font-weight:700;color:var(--gray-500);text-transform:uppercase;letter-spacing:1px}.team-tags{display:flex;flex-wrap:wrap;gap:6px}.team-tag{font-size:.75rem;padding:3px 10px;background:var(--gray-100);color:var(--gray-700);border-radius:100px;font-weight:500}.team-badge-platinum{font-weight:600;color:var(--accent)}.team-badge-sub{font-weight:400;font-size:.8rem;color:var(--gray-500)}.nav-apply-btn{display:inline-block;padding:8px 20px;background:var(--primary);color:var(--white)!important;border-radius:100px;font-size:.9rem;font-weight:600;text-decoration:none;transition:var(--transition)}.nav-apply-btn:hover{background:#1e40af;color:var(--white)!important;transform:translateY(-1px);box-shadow:0 4px 12px #1e3a8a4d}.join-cta{text-align:center;margin-top:48px}.btn-lg{padding:18px 48px;font-size:1.15rem;display:inline-block;text-decoration:none}.hero-actions a.btn{display:inline-block;text-decoration:none}.footer{background:var(--dark);padding:40px 24px}.footer-content{text-align:center}.footer-logo{display:flex;align-items:center;justify-content:center;gap:4px;margin-bottom:12px}.footer-logo .logo-zero,.footer-logo .logo-one{font-size:1.3rem}.footer-name{margin-left:8px;color:var(--gray-300);font-weight:600;font-size:1rem}.footer-desc{color:var(--gray-500);font-size:.85rem}.nav-links .nav-link{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;font-size:.95rem;font-weight:400;color:var(--gray-700);border-radius:var(--radius-sm)}.nav-links .nav-link:hover{color:var(--primary);background:var(--primary-bg)}.nav-links .nav-hackathon{color:var(--primary);font-weight:700;display:inline-flex;align-items:center;gap:6px}.nav-badge{font-size:.7rem;font-weight:700;color:var(--white);background:var(--accent);border-radius:100px;padding:2px 8px}.section.hackathon{padding-top:140px}.hackathon{background:linear-gradient(180deg,var(--white) 0%,var(--primary-bg) 100%);border-top:1px solid var(--gray-300);border-bottom:1px solid var(--gray-300)}.hk-lead{margin-top:16px;color:var(--gray-700);line-height:1.8}.hk-table-wrap{background:var(--white);border:1px solid var(--gray-300);border-radius:var(--radius);overflow:hidden}.hk-table{width:100%;border-collapse:collapse;text-align:left;word-break:keep-all}.hk-table th,.hk-table td{padding:16px 24px;border-bottom:1px solid var(--gray-100);vertical-align:baseline}.hk-table tbody tr:last-child th,.hk-table tbody tr:last-child td{border-bottom:none}.hk-table thead th{background:var(--primary-bg);color:var(--primary);font-size:.85rem;font-weight:700;padding-block:12px;border-bottom:1px solid var(--gray-300)}.hk-table tbody th{width:96px;font-size:1.02rem;font-weight:700;color:var(--accent);letter-spacing:1px;white-space:nowrap}.hk-value{font-size:1.02rem;font-weight:700;color:var(--dark)}.hk-note{font-size:.9rem;color:var(--gray-500)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.hk-steps{list-style:none;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;margin-top:32px;background:var(--gray-300);border:1px solid var(--gray-300);border-radius:var(--radius);overflow:hidden}.hk-steps li{background:var(--white);padding:14px 16px;display:flex;flex-direction:column;gap:2px;font-size:.92rem;color:var(--gray-700)}.hk-step-date{font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums}.hk-cta{display:flex;flex-wrap:wrap;justify-content:center;gap:12px;margin:-16px 0 40px}.hk-cta .btn{text-decoration:none;text-align:center}.btn-disabled{display:inline-block;background:var(--gray-100);color:var(--gray-500);border:2px solid var(--gray-300);cursor:not-allowed}.section.hk-apply{padding-top:64px;padding-bottom:64px;background:linear-gradient(135deg,var(--primary) 0%,#1e40af 100%);color:var(--white)}.hk-apply-inner{display:grid;justify-items:center;gap:14px;text-align:center}.hk-apply-inner h3{font-size:1.6rem;font-weight:800;color:var(--white)}.hk-apply-inner p{color:#dbeafe;line-height:1.8}.hk-apply-inner .btn{margin-top:8px;text-decoration:none}.hk-apply-inner .nw{white-space:nowrap}.hk-apply-inner .hk-ask{font-size:.92rem}.hk-apply-inner .hk-ask a{color:var(--white);font-weight:700;text-decoration:underline;text-underline-offset:3px}.section.hk-posters{padding-top:72px;padding-bottom:80px;background:var(--gray-100)}.hk-poster-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;max-width:920px;margin:0 auto}.hk-poster{margin:0;display:grid;gap:10px}.hk-poster img{display:block;width:100%;height:auto;border-radius:var(--radius-sm);box-shadow:var(--shadow);transition:var(--transition)}.hk-poster a:hover img{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.hk-poster figcaption{text-align:center;font-size:.92rem;color:var(--gray-500)}.hk-poster figcaption a{color:var(--primary-light);font-weight:600;text-decoration:underline;text-underline-offset:3px}.btn-light{background:var(--white);color:var(--primary)}.btn-light:hover{background:var(--primary-bg);color:var(--primary)}.section.hk-club{padding-top:64px;padding-bottom:64px;background:var(--white)}.hk-club-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}.hk-club-text{flex:1 1 420px;min-width:0}.hk-club-text .section-label{font-size:1rem;letter-spacing:1px}.hk-club-text h3{font-size:1.4rem;font-weight:800;color:var(--dark);margin-bottom:8px}.hk-club-text p{color:var(--gray-700);line-height:1.8}.hk-club-inner .btn{text-decoration:none}@media(max-width:900px){.hk-steps{grid-template-columns:repeat(2,minmax(0,1fr))}.activity-cards{grid-template-columns:1fr}.about-content{grid-template-columns:1fr;gap:32px}.benefits-grid,.join-content{grid-template-columns:1fr}.team-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}}@media(max-width:960px){.hamburger{display:flex}.nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--white);border-bottom:1px solid var(--gray-300);padding:12px 24px;box-shadow:var(--shadow)}.nav-links.open{display:flex}.nav-links button,.nav-links .nav-link{width:100%;text-align:left;padding:12px 16px}.nav-apply-btn{text-align:center;padding:12px 20px;margin-top:4px}}@media(max-width:640px){.hk-steps{grid-template-columns:1fr}.hk-table thead{display:none}.hk-table tbody tr{display:grid;grid-template-columns:64px minmax(0,1fr);column-gap:12px;padding:14px 16px;border-bottom:1px solid var(--gray-100)}.hk-table tbody tr:last-child{border-bottom:none}.hk-table th,.hk-table td{padding:0;border-bottom:none}.hk-table tbody th{width:auto;grid-row:span 2}.hk-table .hk-note{grid-column:2;margin-top:2px}.hk-cta .btn{width:100%}.section.hackathon{padding-top:112px}.hero{padding:100px 20px 60px}.hero-title-main{font-size:2.5rem}.hero-title-en{font-size:1.1rem;letter-spacing:3px}.hero-subtitle{font-size:1.05rem}.section{padding:64px 20px}.section-header h2{font-size:1.75rem}.activity-card,.join-card{padding:28px 20px}.benefit-item{padding:24px 20px}.history-timeline{padding-left:0}.history-items{padding-left:20px}.history-item{flex-direction:column;gap:12px;padding:20px}.history-item:before{left:-33px}.history-item-highlight:before{left:-34px}.history-stats{gap:12px}.history-stat{min-width:unset;flex:1;padding:10px 14px}}.nav-links .nav-link.nav-current{color:var(--primary);background:var(--primary-bg);font-weight:700}@media(max-width:640px){.section{padding:48px 16px}.section-header{margin-bottom:28px}.section-header h2{font-size:1.6rem}.section-label{font-size:.72rem;margin-bottom:8px}.hero{min-height:auto;padding:104px 16px 56px}.hero-scroll-indicator{display:none}.hero-actions{flex-direction:column;width:100%;gap:10px}.hero-actions .btn{width:100%;text-align:center}.about-content{gap:24px}.keyword-item{padding:16px;gap:12px}.keyword-icon{font-size:1.5rem}.activity-cards{gap:12px}.activity-card{padding:22px 18px}.card-icon{font-size:2rem;margin-bottom:10px}.history-stats{flex-direction:column;gap:6px;margin-top:14px}.history-stat{flex-direction:row;align-items:baseline;gap:10px;padding:8px 12px}.history-stat-value{font-size:1.05rem;min-width:72px;white-space:nowrap}.history-stat-label{font-size:.8rem}.benefits-grid{gap:12px}.benefit-item{padding:18px 16px;display:grid;grid-template-columns:40px minmax(0,1fr);column-gap:12px}.benefit-number{grid-row:span 2;font-size:1.4rem;margin-bottom:0;line-height:1.3}.benefit-item h4{font-size:1.05rem;margin-bottom:4px}.benefit-item p{font-size:.92rem;line-height:1.6}.team-grid{gap:12px}.team-card,.join-card{padding:22px 18px}.section.hackathon{padding-top:96px}.hk-lead{font-size:.98rem;line-height:1.7}.hk-cta{margin:-8px 0 28px;gap:8px}.hk-steps{margin-top:20px}.hk-steps li{display:grid;grid-template-columns:112px minmax(0,1fr);gap:8px;padding:11px 14px;flex-direction:row}.section.hk-club{padding:40px 16px}.hk-club-inner .btn{width:100%;text-align:center}.section.hk-apply{padding:44px 16px}.section.hk-posters{padding:48px 16px 56px}.hk-poster-grid{grid-template-columns:minmax(0,1fr);gap:24px}.hk-apply-inner h3{font-size:1.35rem}.hk-apply-inner .btn{width:100%;text-align:center}.footer{padding:28px 16px}}.section.ai-page{padding-top:120px;background:var(--gray-100)}.ai-page .container{max-width:880px;display:grid;gap:32px}.ai-head h1{font-size:2.2rem;font-weight:800;color:var(--dark);margin-bottom:12px;text-wrap:balance}.ai-lead{color:var(--gray-700);line-height:1.8}.ai-checked{margin-top:8px;font-size:.85rem;color:var(--gray-500)}.ai-picks{background:var(--white);border:1px solid var(--primary-light);border-radius:var(--radius);padding:20px 24px}.ai-picks h2{font-size:1.1rem;color:var(--primary);margin-bottom:10px}.ai-picks 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