@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap";:root{--primary-color: #16a34a;--primary-hover: #15803d;--primary-dark: #14532d;--secondary-color: #a3e635;--accent-color: #65a30d;--bg-color: #f6f8ee;--bg-soft: #fafdf3;--text-primary: #14532d;--text-body: #1f2937;--text-secondary: #4b5563;--card-bg: rgba(255, 255, 255, .78);--header-bg: rgba(255, 255, 255, .88);--border-color: rgba(101, 163, 13, .18);--border-soft: rgba(20, 83, 45, .08);--shadow-sm: 0 4px 6px -1px rgba(20, 83, 45, .06), 0 2px 4px -1px rgba(20, 83, 45, .04);--shadow-md: 0 10px 15px -3px rgba(20, 83, 45, .08), 0 4px 6px -2px rgba(20, 83, 45, .04);--shadow-lg: 0 20px 25px -5px rgba(20, 83, 45, .12), 0 10px 10px -5px rgba(20, 83, 45, .06);--brand-gradient: linear-gradient(135deg, #14532d 0%, #16a34a 45%, #65a30d 80%, #a3e635 100%);--brand-gradient-soft: linear-gradient(135deg, rgba(22,163,74,.12), rgba(132,204,22,.12))}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;background-color:var(--bg-color);background-image:radial-gradient(at 6% 4%,rgba(132,204,22,.18) 0px,transparent 55%),radial-gradient(at 96% 96%,rgba(22,163,74,.14) 0px,transparent 55%),url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='112' height='130' viewBox='0 0 112 130'><g fill='none' stroke='rgba(101,163,13,0.09)' stroke-width='1.4'><polygon points='56,4 104,32 104,86 56,114 8,86 8,32'/><polygon points='56,30 80,44 80,72 56,86 32,72 32,44' fill='rgba(132,204,22,0.05)' stroke='rgba(132,204,22,0.10)'/></g></svg>");background-attachment:fixed;background-size:auto,auto,224px 260px;color:var(--text-body);line-height:1.65}h1,h2,h3,h4,h5,h6{font-family:Plus Jakarta Sans,Inter,-apple-system,BlinkMacSystemFont,Hiragino Kaku Gothic ProN,Noto Sans JP,sans-serif;font-weight:700;color:var(--text-primary);margin-top:0;letter-spacing:-.01em}a{color:var(--primary-color)}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 3rem;background-color:var(--header-bg);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.brand-link{display:flex;align-items:center;gap:.65rem;text-decoration:none}.brand-logo{width:44px;height:44px;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(20,83,45,.18));flex-shrink:0}.brand-wordmark{display:flex;flex-direction:column;line-height:1}.brand-wordmark h1{font-size:1.6rem;margin:0;background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px;font-family:Plus Jakarta Sans,sans-serif;font-weight:800}.brand-tagline{font-size:.72rem;font-weight:600;letter-spacing:.04em;color:var(--accent-color);margin-top:3px;font-style:italic}.app-header nav{display:flex;align-items:center;gap:2rem}.app-header nav a{text-decoration:none;color:var(--text-secondary);font-weight:600;font-size:.98rem;transition:all .2s ease;position:relative}.app-header nav a:hover{color:var(--primary-color)}.app-header nav a:after{content:"";position:absolute;width:0;height:2px;bottom:-6px;left:0;background:var(--brand-gradient);border-radius:2px;transition:width .3s ease}.app-header nav a:hover:after{width:100%}.btn-link-nav{background:none;border:none;color:var(--text-secondary);font-family:inherit;font-weight:600;font-size:1rem;cursor:pointer;transition:color .2s ease;padding:0}.btn-link-nav:hover{color:var(--accent-color)}.app-main{flex:1;padding:3rem 2rem;max-width:1200px;margin:0 auto;width:100%;box-sizing:border-box}.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-secondary);font-size:.95rem}.form-group input[type=text],.form-group input[type=password],.form-group input[type=email],.form-group input[type=number],.form-group select,textarea{width:100%;padding:.85rem 1rem;border:1px solid #d4dcc6;border-radius:12px;background:#ffffffeb;font-family:inherit;font-size:1rem;color:var(--text-body);transition:all .2s ease;box-sizing:border-box}.form-group input:focus,textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #16a34a2e}.btn-primary{display:inline-block;padding:.85rem 1.6rem;border:none;border-radius:12px;background:var(--brand-gradient);background-size:180% 180%;background-position:0% 50%;color:#fff;font-size:1rem;font-weight:700;text-align:center;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease,background-position .4s ease;box-shadow:0 6px 16px -2px #16a34a73;text-decoration:none;letter-spacing:.01em}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px -4px #16a34a8c;background-position:100% 50%;color:#fff}.btn-secondary{display:inline-block;padding:.8rem 1.5rem;border:1.5px solid var(--primary-color);border-radius:12px;background:#ffffffb3;color:var(--primary-color);font-size:1rem;font-weight:600;text-align:center;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn-secondary:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 4px 14px #16a34a4d}.btn-link{background:none;border:none;color:var(--primary-color);font-weight:600;cursor:pointer;padding:0;font-size:.95rem;transition:color .2s ease}.btn-link:hover{color:var(--primary-hover);text-decoration:underline}.auth-container{max-width:440px;margin:3rem auto;padding:2.75rem 2.5rem;background:var(--card-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--border-color);border-radius:24px;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}.auth-container:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--brand-gradient)}.auth-brand{text-align:center;margin-bottom:1.75rem}.auth-brand img{width:72px;height:72px;object-fit:contain;filter:drop-shadow(0 4px 10px rgba(20,83,45,.22))}.auth-brand .brand-name{margin-top:.6rem;font-family:Plus Jakarta Sans,sans-serif;font-weight:800;font-size:1.3rem;background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.auth-brand .brand-tagline{font-size:.85rem;font-weight:600;letter-spacing:.02em;color:var(--accent-color);display:block;margin-top:4px;font-style:italic}.auth-container h2{text-align:center;font-size:1.7rem;margin-bottom:1.5rem}.course-view-container{background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:22px;padding:2.25rem;box-shadow:var(--shadow-md);margin-bottom:2rem}.home-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem}.home-header h2{font-size:1.7rem}.course-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.75rem}.course-card{background:#ffffffd1;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(132,204,22,.18);border-radius:18px;padding:1.75rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm);height:100%;box-sizing:border-box;display:flex;flex-direction:column;position:relative;overflow:hidden}.course-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--brand-gradient);opacity:0;transition:opacity .3s ease}.course-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);background:#fffffff5;border-color:#16a34a66}.course-card:hover:before{opacity:1}.course-card h3{font-size:1.3rem;margin-top:0;margin-bottom:.6rem;color:var(--primary-dark)}.course-card p{color:var(--text-secondary);font-size:1rem;margin-bottom:1.25rem;flex:1}.course-card small{display:inline-block;color:var(--primary-color);font-weight:600;padding:.3rem .8rem;background:#16a34a1a;border-radius:20px;font-size:.8rem}.welcome-hero{position:relative;text-align:center;padding:4rem 2rem 3.5rem;background:var(--card-bg);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border:1px solid var(--border-color);border-radius:28px;box-shadow:var(--shadow-lg);overflow:hidden}.welcome-hero:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(at 18% 18%,rgba(132,204,22,.18) 0px,transparent 45%),radial-gradient(at 82% 82%,rgba(22,163,74,.16) 0px,transparent 45%);pointer-events:none}.welcome-hero>*{position:relative}.welcome-hero img.hero-logo{width:140px;height:140px;object-fit:contain;filter:drop-shadow(0 8px 20px rgba(20,83,45,.25));margin-bottom:1.25rem}.welcome-hero h2{font-size:2.6rem;margin:0 0 .4rem;background:var(--brand-gradient);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-family:Plus Jakarta Sans,sans-serif;font-weight:800;letter-spacing:-.02em}.welcome-hero .hero-tagline{font-size:1.05rem;font-weight:600;letter-spacing:.02em;color:var(--accent-color);margin-bottom:1.5rem;font-style:italic}.welcome-hero p{font-size:1.1rem;color:var(--text-secondary);margin-bottom:2rem;max-width:540px;margin-left:auto;margin-right:auto}.content-area table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem}.content-area th,.content-area td{padding:.65rem 1rem;border:1px solid #d4dcc6;text-align:left;vertical-align:top}.content-area th{background:#16a34a14;font-weight:600;color:var(--text-primary)}.content-area tr:nth-child(2n) td{background:#f6f8eeb3}.text-center{text-align:center}.mt-2{margin-top:1rem}.mb-2{margin-bottom:1rem}.flex{display:flex}.gap-2{gap:1rem}.mobile-nav-toggle{display:none}.hamburger-btn{display:none;background:none;border:none;cursor:pointer;padding:.4rem;color:var(--text-secondary);font-size:1.4rem;line-height:1;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;transition:background .2s,color .2s;flex-shrink:0}.hamburger-btn:hover{background:#16a34a14;color:var(--primary-color)}.course-view-layout{display:flex;gap:2rem}.course-sidebar{width:280px;min-width:280px;align-self:flex-start;position:sticky;top:5rem}.course-item-row{display:flex;align-items:center;gap:.75rem}.course-item-row .course-item-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-item-row .course-item-actions{flex-shrink:0}.content-area table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}@media (max-width: 768px){.hamburger-btn{display:flex}.app-header{padding:.75rem 1.25rem}.brand-logo{width:36px;height:36px}.brand-wordmark h1{font-size:1.25rem}.brand-tagline{font-size:.65rem;letter-spacing:.02em}.app-header nav{display:none}.app-header nav.menu-open{display:flex;flex-direction:column;align-items:stretch;gap:.25rem;position:absolute;top:100%;left:0;right:0;background:#fffffff7;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:.75rem 1.25rem 1.5rem;border-bottom:1px solid rgba(22,163,74,.15);box-shadow:0 8px 32px #14532d1f;z-index:200}.app-header nav.menu-open a,.app-header nav.menu-open .btn-link-nav{font-size:1.05rem;padding:.75rem 1rem;border-radius:10px;text-align:left;width:100%;box-sizing:border-box;display:block;color:var(--text-primary)}.app-header nav.menu-open a:hover,.app-header nav.menu-open .btn-link-nav:hover{background:#16a34a0f;color:var(--primary-color)}.app-header nav.menu-open a:after{display:none}.app-main{padding:1.25rem .75rem}.home-header{flex-direction:column;align-items:flex-start;gap:1rem;margin-bottom:1.5rem}.home-header h2{font-size:1.4rem}.course-list{grid-template-columns:1fr;gap:1.25rem}.course-view-container{padding:1.25rem 1rem;border-radius:16px}.course-view-layout{flex-direction:column;gap:1rem}.course-sidebar{width:100%;min-width:unset;position:static;top:auto;display:none;box-sizing:border-box}.course-sidebar.mobile-open{display:block}.course-view-layout .course-sidebar.mobile-open~.course-view-container{display:none}.mobile-nav-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:.75rem 1rem;background:#16a34a0f;border:1px solid rgba(22,163,74,.2);border-radius:10px;cursor:pointer;font-family:inherit;font-size:.95rem;box-sizing:border-box;transition:background .2s;text-align:left}.mobile-nav-toggle:hover{background:#16a34a1a}.course-item-row{display:block}.course-item-row .course-item-title{display:block;margin-bottom:.3rem;overflow:visible;white-space:normal;text-overflow:clip}.auth-container{margin:1.5rem 1rem;padding:2rem 1.5rem;border-radius:18px}.auth-container h2{font-size:1.4rem;margin-bottom:1.25rem}.welcome-hero{padding:2.5rem 1.25rem 2rem;border-radius:22px}.welcome-hero img.hero-logo{width:100px;height:100px}.welcome-hero h2{font-size:1.9rem}.welcome-hero p{font-size:1rem}}@media (max-width: 480px){.brand-wordmark h1{font-size:1.1rem}.brand-logo{width:32px;height:32px}.auth-container{margin:1rem;padding:1.5rem 1.1rem}.btn-primary,.btn-secondary{font-size:.95rem;padding:.7rem 1.2rem}.welcome-hero h2{font-size:1.6rem}}