:root{--primary: #3a5a40;--primary-dark: #2d4632;--primary-light: #a3b18a;--secondary: #588157;--accent: #dad7cd;--bg-main: #f8fafc;--card-bg: #ffffff;--text-main: #1a2d23;--text-muted: #5c715e;--border: #cbd5e1;--success: #38a169;--error: #e53e3e;--radius-lg: 24px;--radius-md: 16px;--radius-sm: 12px;--shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, .05);--shadow-main: 0 10px 25px -5px rgba(58, 90, 64, .1);--shadow-hover: 0 20px 25px -5px rgba(58, 90, 64, .15);--container-width: 1200px;--nav-height: 72px}*{box-sizing:border-box;margin:0;padding:0;-webkit-font-smoothing:antialiased}body{font-family:Inter,sans-serif;background:var(--bg-main);color:var(--text-main);line-height:1.6}h1,h2,h3,h4{line-height:1.2;font-weight:800}a{text-decoration:none;color:inherit}.container{max-width:var(--container-width);margin:0 auto;padding:0 1.5rem}main{padding:2rem 0 6rem}.main-nav{background:#fffffff2;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000;height:var(--nav-height);display:flex;align-items:center}.nav-container{width:100%;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.25rem;color:var(--primary);font-weight:800}.logo span{font-weight:400;color:var(--text-muted)}.nav-links{display:flex;gap:.5rem}.nav-links button{padding:.6rem 1rem;border-radius:var(--radius-sm);border:none;background:transparent;cursor:pointer;font-weight:600;color:var(--text-muted);transition:all .2s}.nav-links button:hover{background:#3a5a400d;color:var(--primary)}.nav-links button.active{background:var(--primary);color:#fff}.school-link{font-size:.85rem;font-weight:600;color:var(--text-muted);transition:color .2s;border:1px solid var(--border);padding:.5rem 1rem;border-radius:var(--radius-sm)}.school-link:hover{color:var(--primary);border-color:var(--primary);background:#3a5a400d}@media(max-width:1000px){.school-link{display:none}}.card{background:var(--card-bg);border-radius:var(--radius-md);padding:2rem;border:1px solid var(--border);box-shadow:var(--shadow-main);transition:transform .3s ease,box-shadow .3s ease}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}.content-section{display:none;animation:fadeIn .4s ease-out}.content-section.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.8rem 1.5rem;border-radius:var(--radius-sm);font-weight:700;cursor:pointer;border:none;transition:all .3s}.btn-primary-dark{background:var(--primary);color:#fff}.btn-primary-dark:hover{background:var(--secondary);box-shadow:0 4px 12px #3a5a404d}.full-width{width:100%}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;margin-top:2rem}@media(max-width:900px){.tool-grid{grid-template-columns:1fr}}.input-main-label{display:block;font-weight:700;font-size:.75rem;text-transform:uppercase;color:var(--text-muted);margin-bottom:.6rem;letter-spacing:.05em}textarea{width:100%;padding:1rem;border-radius:var(--radius-sm);border:2px solid var(--border);font-family:inherit;resize:none;transition:border-color .2s}textarea:focus{border-color:var(--primary);outline:none}.chip-group{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.5rem}.radio-chip input{display:none}.radio-chip span{padding:.5rem 1rem;border:2px solid var(--border);border-radius:100px;cursor:pointer;display:block;font-weight:600;font-size:.85rem;color:var(--text-muted);transition:all .2s}.radio-chip input:checked+span{border-color:var(--primary);background:var(--primary);color:#fff}.slider-container{margin:1.5rem 0}.slider-header{display:flex;justify-content:space-between;margin-bottom:.5rem}#intensity-value{font-weight:800;color:var(--primary)}input[type=range]{-webkit-appearance:none;width:100%;height:8px;border-radius:5px;background:var(--border);outline:none;margin:1rem 0}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary);cursor:pointer;border:3px solid #fff;box-shadow:0 2px 4px #0003}.result-card-green{background:#f0fdf4;border-color:#dcfce7}.output-text{font-size:1.1rem;color:var(--primary-dark);font-weight:600}.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}@media(max-width:768px){.comparison-grid{grid-template-columns:1fr}}.comparison-box{padding:1.5rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:#fdfdfd}.example-tabs{display:flex;gap:.75rem;justify-content:center;margin-bottom:2rem;flex-wrap:wrap}.ex-tab-btn{padding:.75rem 1.5rem;border-radius:100px;border:2px solid var(--border);background:#fff;cursor:pointer;font-weight:700;color:var(--text-muted);transition:all .2s}.ex-tab-btn:hover{border-color:var(--primary);color:var(--primary)}.ex-tab-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px #3a5a4033}.examples-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:1.5rem}.example-item-card{border-left:4px solid var(--primary)}.example-sit-tag{font-size:.7rem;font-weight:800;color:var(--primary);text-transform:uppercase;margin-bottom:.5rem}.example-quote{font-style:italic;color:var(--text-main)}.needs-grid-layout{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}.need-item-card{text-align:center;padding:2rem;cursor:pointer;position:relative;overflow:hidden}.need-item-card:hover{border-color:var(--primary);transform:translateY(-4px);background:#fdfdfd}.need-more-hint{font-size:.75rem;color:var(--primary);font-weight:700;margin-top:1rem;opacity:0;transform:translateY(10px);transition:all .3s}.need-item-card:hover .need-more-hint{opacity:1;transform:translateY(0)}.need-icon{font-size:2.5rem;margin-bottom:1rem;display:block}.need-sub-list{font-size:.85rem;color:var(--text-muted);font-style:italic;margin-top:1rem}.detailed-guide-grid{margin-bottom:4rem}.step-card{display:flex;flex-direction:column;gap:1rem;position:relative;padding-top:3rem;overflow:visible}.step-badge{position:absolute;top:-1rem;left:1rem;width:64px;height:64px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;font-weight:800;box-shadow:0 4px 10px #3a5a4033}.step-q{color:var(--primary);font-weight:700;font-size:1.2rem}.step-rule{background:#f8fafc;padding:1rem;border-radius:var(--radius-sm);font-size:.9rem;border:1px solid var(--border)}.has-tooltip{cursor:help}.step-tooltip{position:absolute;bottom:calc(100% + 15px);left:50%;transform:translate(-50%);width:250px;background:var(--primary-dark);color:#fff;padding:1rem;border-radius:var(--radius-sm);font-size:.85rem;font-weight:500;box-shadow:0 10px 20px #0003;pointer-events:none;opacity:0;transition:all .3s ease;z-index:5000;text-align:center}.step-tooltip:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:8px solid transparent;border-top-color:var(--primary-dark)}.has-tooltip:hover .step-tooltip{opacity:1;transform:translate(-50%) translateY(-10px)}.vocab-section-group{margin-bottom:2rem;border-bottom:1px solid var(--border);padding-bottom:1.5rem}.vocab-cat-title{color:var(--primary);margin-bottom:1rem;font-size:1.4rem}.vocab-group{margin-bottom:.8rem;line-height:1.8}.vocab-word{cursor:pointer;padding:.2rem .5rem;border-radius:6px;transition:background .2s;color:var(--primary);font-weight:600;display:inline-block;white-space:nowrap}.vocab-word:hover{background:#3a5a4014}.info-icon{font-size:.8rem;opacity:.5;vertical-align:middle}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:3000;padding:1rem}.modal-card{width:100%;max-width:650px;position:relative;animation:modalIn .3s ease-out}@keyframes modalIn{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.modal-close-btn{position:absolute;top:1.5rem;right:1.5rem;border:none;background:none;font-size:2rem;cursor:pointer;color:var(--text-muted)}.modal-header h2{color:var(--primary);font-size:2.2rem;margin-bottom:.5rem}.modal-need-badge{background:var(--accent);padding:.4rem 1rem;border-radius:100px;display:inline-block;font-size:.85rem}.modal-main-desc{font-size:1.1rem;margin:1.5rem 0;color:var(--text-main)}.modal-context-grid{display:flex;flex-direction:column;gap:1rem}.context-item{background:#f8fafc;padding:1.5rem;border-radius:var(--radius-sm);border-left:4px solid var(--primary)}.context-label{display:block;font-size:.7rem;font-weight:800;text-transform:uppercase;color:var(--text-muted);margin-bottom:.4rem}.visual-map-container{display:grid;grid-template-columns:1fr 300px 1fr;gap:2rem;align-items:start;margin-top:2rem;height:600px}@media(max-width:1000px){.visual-map-container{grid-template-columns:1fr;height:auto}}.map-column{display:flex;flex-direction:column;height:100%;overflow:hidden}.map-center{display:flex;align-items:center;justify-content:center;height:100%}.nodes-list{display:flex;flex-direction:column;gap:.6rem;padding:1rem;background:#fff;border-radius:var(--radius-md);border:1px solid var(--border);height:100%;overflow-y:auto}.nodes-list::-webkit-scrollbar{width:6px}.nodes-list::-webkit-scrollbar-track{background:#f1f1f1;border-radius:3px}.nodes-list::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}.nodes-list::-webkit-scrollbar-thumb:hover{background:var(--primary-light)}@keyframes popSelect{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1.02)}}.map-node{padding:1rem;border-radius:var(--radius-sm);border:2px solid #f1f5f9;text-align:left;cursor:pointer;font-weight:600;transition:all .2s cubic-bezier(.25,.46,.45,.94);background:#fff;font-size:.95rem;flex-shrink:0}.map-node:hover{border-color:var(--primary);transform:translate(5px);box-shadow:var(--shadow-soft)}.map-node.active{background:var(--primary);color:#fff;transform:scale(1.02);border-color:var(--primary);animation:popSelect .3s ease-out forwards}.map-node.feeling-node.pleasant.active{background:var(--success);border-color:var(--success)}.map-node.feeling-node.unpleasant.active{background:var(--error);border-color:var(--error)}.map-node.highlight{background:var(--primary-light);color:var(--primary-dark);border-color:var(--primary);font-weight:700;transform:translate(-5px)}.bridge-card{border:3px dashed var(--primary-light);width:100%;height:300px;display:flex;align-items:center;justify-content:center;border-radius:24px;text-align:center;padding:2rem;background:#fdfdfd;font-weight:700;color:var(--text-main);box-shadow:var(--shadow-soft);font-size:1.2rem;transition:all .3s cubic-bezier(.4,0,.2,1)}.bridge-card.active-result{background:linear-gradient(145deg,#fff,#f0fdf4);border:3px solid var(--primary);box-shadow:0 10px 30px #3a5a4026;transform:scale(1.02)}.bridge-card.active-result .placeholder-text{opacity:1;font-style:normal;color:var(--text-main);font-size:1.35rem;line-height:1.6}.bridge-card .placeholder-text{opacity:.5;font-weight:400;font-style:italic;font-size:1rem;transition:all .2s}@keyframes textAppear{0%{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}.bridge-text-anim{animation:textAppear .4s ease-out forwards}.map-node-icon{font-size:1.2rem;margin-right:.5rem;vertical-align:middle}.chat-bot-widget{position:fixed;bottom:2rem;right:2rem;z-index:2000}.chat-fab{width:64px;height:64px;border-radius:50%;background:var(--primary);color:#fff;border:none;font-size:1.5rem;cursor:pointer;box-shadow:0 10px 30px #0003;transition:transform .2s}.chat-fab:hover{transform:scale(1.1)}.chat-window{position:absolute;bottom:80px;right:0;width:360px;height:500px;background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-hover);border:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.chat-header{background:var(--primary);color:#fff;padding:1.25rem;display:flex;justify-content:space-between;align-items:center}.chat-messages{flex:1;padding:1.25rem;overflow-y:auto;display:flex;flex-direction:column;gap:1rem;background:#f9fafb}.user-msg-bubble{background:var(--primary);color:#fff;padding:.8rem 1rem;border-radius:16px 16px 2px;align-self:flex-end;max-width:80%;font-size:.9rem}.bot-msg-bubble{background:#fff;border:1px solid var(--border);padding:.8rem 1rem;border-radius:16px 16px 16px 2px;align-self:flex-start;max-width:80%;font-size:.9rem}.chat-input-area{padding:1rem;border-top:1px solid var(--border);display:flex;gap:.5rem;background:#fff}.chat-input-area input{flex:1;padding:.8rem;border:1px solid var(--border);border-radius:var(--radius-sm);font-family:inherit}.chat-close-btn{background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer}.chat-send-btn{background:var(--primary);color:#fff;border:none;padding:.5rem 1rem;border-radius:var(--radius-sm);cursor:pointer}.loading-shimmer{background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0,#f0f0f0 75%);background-size:200% 100%;animation:shimmer 1.5s infinite}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.hidden{display:none!important}.pdf-header{margin-bottom:3rem;border-bottom:2px solid var(--accent);padding-bottom:1rem}.pdf-title{font-size:2.5rem;color:var(--primary-dark);letter-spacing:-.02em}.pdf-subtitle{font-size:1.1rem;color:var(--text-muted)}.section-title{font-size:1.8rem;margin-bottom:2rem;color:var(--primary);text-align:center}.memo-display{width:100%;display:flex;justify-content:center}.map-search-container{position:relative;width:100%;margin-bottom:2rem}.search-input{width:100%;padding:1rem 1rem 1rem 3rem;border-radius:var(--radius-sm);border:2px solid var(--border);font-family:inherit;font-size:1rem;transition:border-color .2s;background:#fff url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="%235c715e" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="11" cy="11" r="8"></circle><line x1="21" y1="21" x2="16.65" y2="16.65"></line></svg>') no-repeat 1rem center}.search-input:focus{border-color:var(--primary);outline:none}.flashcards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:1.5rem}.flashcard{background-color:transparent;height:220px;perspective:1000px;cursor:pointer}.flashcard-inner{position:relative;width:100%;height:100%;text-align:center;transition:transform .6s;transform-style:preserve-3d;box-shadow:var(--shadow-main);border-radius:var(--radius-md)}.flashcard:hover .flashcard-inner{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;-webkit-backface-visibility:hidden;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:1.5rem;border-radius:var(--radius-md);border:1px solid var(--border)}.flashcard-front{background-color:#fff;color:var(--text-main)}.flashcard-back{background-color:var(--primary);color:#fff;transform:rotateY(180deg)}.fc-label{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;margin-bottom:.5rem;opacity:.7}.fc-main-text{font-size:1.5rem;font-weight:800;margin-bottom:.5rem;line-height:1.2}.fc-sub-text{font-size:.95rem;opacity:.9;font-style:italic;margin-top:.5rem}.fc-icon{font-size:2.5rem;margin-bottom:.5rem}.flashcard.unpleasant .flashcard-front{border-top:5px solid var(--error)}.flashcard.pleasant .flashcard-front{border-top:5px solid var(--success)}.flashcard.unpleasant .fc-main-text{color:var(--error)}.flashcard.pleasant .fc-main-text{color:var(--success)}.quiz-option{background:transparent;border:2px solid var(--border);padding:1rem;border-radius:var(--radius-sm);text-align:left;cursor:pointer;font-weight:500;transition:all .2s;width:100%;font-size:1rem;color:var(--text-main)}.quiz-option:hover:not(.disabled){border-color:var(--primary);background:#3a5a400d}.quiz-option.correct{background:#f0fdf4!important;border-color:var(--success)!important;color:var(--primary-dark)}.quiz-option.incorrect{background:#fef2f2!important;border-color:var(--error)!important;opacity:.7}.quiz-option.disabled{pointer-events:none}.quiz-score{box-shadow:0 2px 4px #0000001a}