:root{--primary: #00A4A6;--primary-dark: #008B8D;--primary-light: #E0F7F7;--dark: #111827;--dark-light: #1F2937;--gray-900: #111827;--gray-700: #374151;--gray-500: #6B7280;--gray-400: #9CA3AF;--gray-300: #D1D5DB;--gray-200: #E5E7EB;--gray-100: #F3F4F6;--gray-50: #F9FAFB;--white: #FFFFFF;--danger: #EF4444;--success: #10B981;--warning: #F59E0B;--blue: #3B82F6;--shadow-sm: 0 1px 2px rgba(0,0,0,.05);--shadow: 0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);--shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.05);--shadow-xl: 0 20px 25px -5px rgba(0,0,0,.08), 0 8px 10px -6px rgba(0,0,0,.04);--radius: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 20px;--transition: .3s ease;--max-width: 1140px}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:Pretendard,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;color:var(--gray-700);line-height:1.6;background:var(--white);-webkit-font-smoothing:antialiased;overflow-x:hidden}a{text-decoration:none;color:inherit}ul,ol{list-style:none}img{max-width:100%;display:block}button,input{font-family:inherit;font-size:inherit;border:none;outline:none}h1,h2,h3,h4{color:var(--gray-900);font-weight:700;line-height:1.3}h1{font-size:3rem}h2{font-size:2.25rem}h3{font-size:1.5rem}h4{font-size:1.125rem}p{font-size:1rem;line-height:1.75}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.section{padding:96px 0;overflow:hidden}.section-gray{background:var(--gray-50)}.section-dark{background:var(--dark);color:var(--white)}.section-dark h2,.section-dark h3,.section-dark h4,.section-dark p{color:var(--white)}.section-header{text-align:center;margin-bottom:56px}.section-header h2{margin-bottom:14px}.section-header p{color:var(--gray-500);max-width:560px;margin:0 auto;font-size:1.063rem}.section-label{display:inline-block;font-size:.8rem;font-weight:700;color:var(--primary);text-transform:uppercase;letter-spacing:2px;margin-bottom:12px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;font-size:1rem;font-weight:600;border-radius:var(--radius);cursor:pointer;transition:all var(--transition);gap:8px;white-space:nowrap}.btn-primary{background:var(--primary);color:var(--white)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn-outline:hover{background:var(--primary);color:var(--white);transform:translateY(-2px)}.btn-white{background:var(--white);color:var(--dark)}.btn-white:hover{background:var(--gray-100);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-lg{padding:18px 40px;font-size:1.063rem;border-radius:var(--radius-lg)}.btn-sm{padding:10px 20px;font-size:.875rem}.btn-block{width:100%}.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fffffff7;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:all var(--transition)}.header.scrolled{border-bottom-color:var(--gray-200);box-shadow:var(--shadow-sm)}.nav{display:flex;align-items:center;justify-content:space-between;height:68px}.nav-logo{display:flex;align-items:center}.nav-logo img{height:34px;width:auto;display:block}.auth-header .nav-logo img{height:44px}.nav-links{display:flex;align-items:center;gap:28px}.nav-links a{font-size:.9rem;font-weight:500;color:var(--gray-700);transition:color var(--transition)}.nav-links a:hover{color:var(--primary)}.nav-actions{display:flex;align-items:center;gap:10px}.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;padding:4px}.nav-toggle span{width:22px;height:2px;background:var(--gray-700);border-radius:2px;transition:all var(--transition)}.hero{padding:140px 0 100px;background:linear-gradient(135deg,#0f172a,#1e3a5f,#0e4d4f);color:var(--white);position:relative;overflow:hidden}.hero:before{content:"";position:absolute;top:-30%;right:-10%;width:500px;height:500px;border-radius:50%;background:#00a4a61f;filter:blur(80px)}.hero .container{position:relative;z-index:1;display:flex;align-items:center;gap:60px}.hero-content{flex:1}.hero-visual{flex:0 0 420px}.hero h1{color:var(--white);font-size:3rem;margin-bottom:20px;line-height:1.25}.hero p{font-size:1.125rem;color:#ffffffbf;max-width:500px;margin-bottom:36px}.hero-actions{display:flex;gap:14px;flex-wrap:wrap}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#ffffff14;border:1px solid rgba(255,255,255,.15);border-radius:50px;padding:8px 18px;font-size:.813rem;color:#ffffffe6;margin-bottom:20px}.hero-diagram{background:#ffffff0f;border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-xl);padding:32px 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#D4AF37}.patent-cert-title{font-size:1.5rem;font-weight:800;color:var(--gray-900);margin-bottom:8px;letter-spacing:4px}.patent-cert-number{font-size:1rem;color:var(--gray-700);font-weight:600;margin-bottom:16px}.patent-cert-org{font-size:.813rem;color:var(--gray-500);padding-top:16px;border-top:1px solid var(--gray-200)}.patent-info h2{margin-bottom:20px}.patent-info>p{color:var(--gray-500);margin-bottom:28px;font-size:.95rem}.patent-details{display:flex;flex-direction:column;gap:16px}.patent-detail-item{display:flex;gap:14px;align-items:flex-start;padding:16px;background:var(--white);border-radius:var(--radius-lg);border:1px solid var(--gray-200)}.patent-detail-icon{width:40px;height:40px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0}.patent-detail-icon.pdi-name{background:#ede9fe}.patent-detail-icon.pdi-date{background:#dbeafe}.patent-detail-icon.pdi-num{background:#d1fae5}.patent-detail-icon.pdi-desc{background:#fef3c7}.patent-detail-label{font-size:.75rem;font-weight:600;color:var(--gray-500);margin-bottom:2px}.patent-detail-value{font-size:.875rem;font-weight:600;color:var(--gray-900);line-height:1.5}@media(max-width:968px){.patent-grid{grid-template-columns:1fr;gap:32px}.patent-visual{padding:32px 24px}}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.card{background:var(--white);border-radius:var(--radius-xl);padding:36px 28px;box-shadow:var(--shadow);transition:all var(--transition);border:1px solid var(--gray-100)}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl);border-color:var(--primary-light)}.card-icon{width:56px;height:56px;border-radius:var(--radius-lg);background:var(--primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:20px}.card h3{margin-bottom:10px;font-size:1.25rem}.card p{color:var(--gray-500);font-size:.9rem;line-height:1.7}.card-highlight{margin-top:16px;padding:10px 14px;background:#fef3c7;border-radius:var(--radius);font-size:.813rem;font-weight:600;color:#92400e;display:flex;align-items:center;gap:6px}.flow-container{background:var(--white);border-radius:var(--radius-2xl);padding:48px 40px;box-shadow:var(--shadow-lg);border:1px solid var(--gray-100)}.flow-title{text-align:center;font-size:1rem;font-weight:600;color:var(--gray-500);margin-bottom:40px}.flow-diagram{display:flex;align-items:flex-start;justify-content:center;gap:0;flex-wrap:nowrap}.flow-actor{display:flex;flex-direction:column;align-items:center;text-align:center;width:140px;flex-shrink:0}.flow-actor-icon{width:72px;height:72px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:12px;border:3px 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a:hover{color:var(--primary)}.footer-links{display:flex;justify-content:center;gap:28px;margin-bottom:20px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--gray-50);padding:40px 24px}.auth-card{background:var(--white);border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);width:100%;max-width:500px;padding:44px 36px;border:1px solid var(--gray-100)}.auth-header{text-align:center;margin-bottom:32px}.auth-header .nav-logo{justify-content:center;margin-bottom:20px}.auth-header h2{font-size:1.625rem;margin-bottom:6px}.auth-header p{color:var(--gray-500);font-size:.9rem}.form-group{margin-bottom:18px}.form-label{display:block;font-size:.813rem;font-weight:600;color:var(--gray-700);margin-bottom:6px}.form-input{width:100%;padding:13px 16px;border:1.5px solid var(--gray-300);border-radius:var(--radius);font-size:.938rem;color:var(--gray-900);background:var(--white);transition:all var(--transition)}.form-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #00a4a61f}.form-input::placeholder{color:var(--gray-400)}.form-hint{font-size:.75rem;color:var(--gray-500);margin-top:4px}.form-row{display:flex;gap:10px}.form-row .form-input{flex:1}.form-row .btn{flex-shrink:0}.alert-box{padding:12px 16px;border-radius:var(--radius);margin-bottom:18px;font-size:.813rem;font-weight:500;display:none;align-items:center;gap:8px}.alert-box.alert-danger{background:#fef2f2;color:#991b1b;border:1px solid #FECACA;display:flex}.alert-box.alert-success{background:#f0fdf4;color:#166534;border:1px solid #BBF7D0;display:flex}.consent-section{margin:24px 0}.consent-title{font-size:.875rem;font-weight:700;color:var(--gray-900);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--gray-100)}.consent-all{display:flex;align-items:center;gap:10px;padding:12px 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ease}.fade-up.visible{opacity:1;transform:translateY(0)}@media(max-width:968px){h1{font-size:2.25rem}h2{font-size:1.75rem}.section{padding:72px 0}.hero .container{flex-direction:column}.hero-visual{flex:none;width:100%;max-width:380px}.features-grid{grid-template-columns:1fr;gap:20px}.strengths-grid{grid-template-columns:1fr}.flow-diagram{flex-wrap:wrap;gap:16px;justify-content:center}.flow-arrow{transform:none;min-width:60px}.trust-stats{gap:28px}.hero{padding:120px 0 72px}}@media(max-width:768px){.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--white);flex-direction:column;padding:20px;gap:14px;border-bottom:1px solid var(--gray-200);box-shadow:var(--shadow)}.nav-links.active,.nav-toggle{display:flex}.nav-actions .btn-outline{display:none}.hero h1{font-size:1.875rem}.hero p{font-size:1rem}.hero-actions{flex-direction:column}.hero-actions .btn{width:100%}.hero-visual{display:none}.auth-card{padding:28px 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