@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;600;700;900&display=swap');:root{--primary:#8B4513;--primary-dark:#6B3410;--primary-light:#A0522D;--gold:#C8933A;--gold-light:#E8BF7A;--red-seal:#c0392b;--bg-paper:#f5f3e8;--bg-alt:#ede8d5;--bg-card:#fffbf0;--bg-dark:#2d1a0e;--border:#d4c8a5;--border-light:#e8e0c5;--text-dark:#2c1a0e;--text-mid:#5d4037;--text-light:#8d6e63;--text-white:#fff8f0;--shadow-sm:0 2px 8px rgba(62,39,35,0.10);--shadow-md:0 6px 20px rgba(62,39,35,0.15);--shadow-lg:0 12px 40px rgba(62,39,35,0.20);--shadow-xl:0 20px 60px rgba(62,39,35,0.25);--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--transition:0.3s cubic-bezier(0.4,0,0.2,1);--transition-slow:0.6s cubic-bezier(0.4,0,0.2,1);--header-h:64px;--font-main:'Noto Serif SC','STKaiti','KaiTi',serif;}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}html{scroll-behavior:smooth;}body{font-family:var(--font-main);background-color:var(--bg-paper);background-image:radial-gradient(circle at 20% 20%,rgba(200,147,58,0.04) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(139,69,19,0.04) 0%,transparent 50%);color:var(--text-dark);line-height:1.7;overflow-x:hidden;}body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%238B4513' fill-opacity='0.015'%3E%3Ccircle cx='30' cy='30' r='1'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");pointer-events:none;z-index:0;}.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}.container-full{width:100%;padding:0;margin:0;position:relative;z-index:1;}.page-loader{position:fixed;inset:0;background:var(--bg-dark);z-index:9999;display:flex;align-items:center;justify-content:center;transition:opacity 0.6s,visibility 0.6s;}.page-loader.hidden{opacity:0;visibility:hidden;}.loader-inner{text-align:center;}.loader-char{font-size:5rem;color:var(--gold);animation:pulse-char 1.5s ease-in-out infinite;text-shadow:0 0 40px rgba(200,147,58,0.8);}.loader-text{color:var(--text-white);font-size:1rem;letter-spacing:4px;margin-top:16px;opacity:0.7;}@keyframes pulse-char{0%,100%{transform:scale(1);opacity:0.8;}50%{transform:scale(1.1);opacity:1;}}.header{background-color:var(--bg-dark);color:var(--text-white);position:fixed;top:0;width:100%;z-index:1000;height:var(--header-h);border-bottom:1px solid rgba(200,147,58,0.2);transition:box-shadow var(--transition);}.header.scrolled{box-shadow:0 4px 24px rgba(0,0,0,0.4);background-color:rgba(45,26,14,0.97);backdrop-filter:blur(12px);}.header-content{display:flex;align-items:center;justify-content:space-between;height:var(--header-h);}.logo{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0;}.logo-icon{width:40px;height:40px;background:linear-gradient(135deg,var(--gold),var(--primary));border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;font-weight:900;color:#fff;box-shadow:0 2px 8px rgba(200,147,58,0.4);}.logo-text{font-size:1.1rem;font-weight:700;letter-spacing:2px;color:var(--text-white);}.nav{display:flex;gap:4px;align-items:center;}.nav-link{color:rgba(255,248,240,0.75);text-decoration:none;padding:6px 14px;border-radius:var(--radius-sm);font-size:0.9rem;letter-spacing:1px;transition:all var(--transition);position:relative;}.nav-link::after{content:'';position:absolute;bottom:2px;left:50%;transform:translateX(-50%);width:0;height:2px;background:var(--gold);border-radius:2px;transition:width var(--transition);}.nav-link:hover,.nav-link.active{color:var(--gold-light);}.nav-link:hover::after,.nav-link.active::after{width:60%;}.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px;border:none;background:none;}.hamburger span{width:24px;height:2px;background:var(--text-white);border-radius:2px;transition:all var(--transition);display:block;}.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px);}.hamburger.open span:nth-child(2){opacity:0;}.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px);}.section{padding:100px 0 80px;position:relative;background:transparent;}.section.bg-alt{background-color:transparent;}.section-full{padding:80px 0;width:100%;}.section-header{text-align:center;margin-bottom:50px;}.section-badge{display:inline-block;font-size:0.7rem;letter-spacing:4px;color:var(--primary-light);border:1px solid var(--border);padding:4px 14px;border-radius:100px;margin-bottom:14px;background:rgba(139,69,19,0.05);font-family:'Arial',sans-serif;font-weight:600;}.section-title{font-size:2.4rem;font-weight:700;color:var(--primary);margin-bottom:12px;line-height:1.2;position:relative;display:inline-block;}.section-title::after{content:'';position:absolute;bottom:-8px;left:50%;transform:translateX(-50%);width:60px;height:3px;background:linear-gradient(90deg,var(--gold),var(--primary));border-radius:3px;}.section-desc{font-size:1rem;color:var(--text-light);margin-top:20px;}.card{background:transparent;border:none;border-radius:0;padding:28px 0;box-shadow:none;position:relative;overflow:visible;}.card::before{content:none;}.btn-primary{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;padding:12px 28px;border-radius:var(--radius-sm);cursor:pointer;font-size:1rem;font-family:var(--font-main);font-weight:600;letter-spacing:1px;transition:all var(--transition);box-shadow:0 4px 14px rgba(139,69,19,0.35);}.btn-primary:hover{background:linear-gradient(135deg,var(--primary-light),var(--primary));box-shadow:0 6px 20px rgba(139,69,19,0.45);transform:translateY(-2px);}.btn-primary:active{transform:translateY(0);}.btn-outline{display:inline-flex;align-items:center;gap:8px;background:transparent;color:var(--primary);border:2px solid var(--primary);padding:10px 24px;border-radius:var(--radius-sm);cursor:pointer;font-size:1rem;font-family:var(--font-main);font-weight:600;letter-spacing:1px;transition:all var(--transition);}.btn-outline:hover{background:var(--primary);color:#fff;}.btn-icon{font-size:0.85rem;}.hidden{display:none !important;}.hero-section{margin-top:var(--header-h);min-height:calc(100vh - var(--header-h));display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden;background:linear-gradient(160deg,#2d1a0e 0%,#3d2413 30%,#4a2c18 60%,#2d1a0e 100%);}.hero-bg-pattern{position:absolute;inset:0;background-image:radial-gradient(ellipse at 20% 50%,rgba(200,147,58,0.15) 0%,transparent 60%),radial-gradient(ellipse at 80% 20%,rgba(139,69,19,0.2) 0%,transparent 60%),url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23C8933A' stroke-width='0.3' stroke-opacity='0.08'%3E%3Crect x='10' y='10' width='60' height='60' rx='2'/%3E%3Ccircle cx='40' cy='40' r='20'/%3E%3C/g%3E%3C/svg%3E");pointer-events:none;}.hero-content{position:relative;z-index:2;padding:60px 20px;}.hero-badge{display:inline-block;border:1px solid rgba(200,147,58,0.5);color:var(--gold-light);padding:6px 20px;border-radius:100px;font-size:0.85rem;letter-spacing:3px;margin-bottom:32px;background:rgba(200,147,58,0.08);}.hero-title{font-size:clamp(2.8rem,6vw,5rem);font-weight:900;color:var(--text-white);line-height:1.3;margin-bottom:24px;letter-spacing:8px;}.title-char{display:inline-block;animation:dropIn 0.6s ease both;}.title-char.delay1{animation-delay:0.1s;}.title-char.delay2{animation-delay:0.2s;}.title-char.delay3{animation-delay:0.3s;}.title-char.delay4{animation-delay:0.4s;}.title-char.delay5{animation-delay:0.5s;}.title-char.delay6{animation-delay:0.6s;}@keyframes dropIn{from{opacity:0;transform:translateY(-30px);}to{opacity:1;transform:translateY(0);}}.hero-subtitle{font-size:1.05rem;color:rgba(255,248,240,0.7);letter-spacing:3px;margin-bottom:48px;line-height:1.8;}.hero-stats{display:flex;align-items:center;justify-content:center;gap:32px;margin-bottom:48px;}.stat-item{text-align:center;}.stat-num{font-size:2.4rem;font-weight:900;color:var(--gold-light);line-height:1;margin-bottom:4px;}.stat-label{font-size:0.8rem;color:rgba(255,248,240,0.55);letter-spacing:2px;}.stat-divider{color:rgba(200,147,58,0.4);font-size:1.5rem;}.hero-btn{display:inline-block;padding:14px 40px;background:linear-gradient(135deg,var(--gold),#a06820);color:#fff;text-decoration:none;border-radius:100px;font-size:1rem;font-weight:700;letter-spacing:2px;box-shadow:0 8px 30px rgba(200,147,58,0.4);transition:all var(--transition);}.hero-btn:hover{transform:translateY(-3px);box-shadow:0 12px 40px rgba(200,147,58,0.5);}.scroll-indicator{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);z-index:2;}.scroll-arrow{width:24px;height:24px;border-right:2px solid rgba(200,147,58,0.6);border-bottom:2px solid rgba(200,147,58,0.6);transform:rotate(45deg);animation:bounce 2s infinite;margin:0 auto;}@keyframes bounce{0%,100%{transform:rotate(45deg) translateY(0);opacity:0.6;}50%{transform:rotate(45deg) translateY(8px);opacity:1;}}.tree-controls{display:flex;align-items:center;gap:12px;margin-bottom:20px;flex-wrap:wrap;}.tree-btn{padding:6px 16px;border:1px solid var(--border);background:var(--bg-card);color:var(--text-mid);border-radius:var(--radius-sm);cursor:pointer;font-size:0.85rem;font-family:var(--font-main);transition:all var(--transition);}.tree-btn:hover{border-color:var(--primary);color:var(--primary);background:rgba(139,69,19,0.05);}.tree-hint{font-size:0.8rem;color:var(--text-light);margin-left:auto;}.tree-container{overflow-x:auto;padding:40px 0 30px;text-align:center;scrollbar-width:thin;scrollbar-color:var(--border) transparent;background:transparent;border:none;border-radius:0;box-shadow:none;min-height:300px;transition:none;}.tree-container:hover{box-shadow:none;}.tree-container::-webkit-scrollbar{height:6px;}.tree-container::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}.tree-wrapper ul{padding-top:24px;position:relative;display:flex;justify-content:center;}.tree-wrapper li{float:left;text-align:center;list-style-type:none;position:relative;padding:24px 8px 0;transition:all var(--transition-slow);}.tree-wrapper li::before,.tree-wrapper li::after{content:'';position:absolute;top:0;right:50%;border-top:2px solid var(--border);width:50%;height:24px;}.tree-wrapper li::after{right:auto;left:50%;border-left:2px solid var(--border);}.tree-wrapper li:only-child::after,.tree-wrapper li:only-child::before{display:none;}.tree-wrapper li:only-child{padding-top:0;}.tree-wrapper li:first-child::before,.tree-wrapper li:last-child::after{border:0 none;}.tree-wrapper li:last-child::before{border-right:2px solid var(--border);border-radius:0 5px 0 0;}.tree-wrapper li:first-child::after{border-radius:5px 0 0 0;}.tree-wrapper ul ul::before{content:'';position:absolute;top:0;left:50%;border-left:2px solid var(--border);width:0;height:24px;}.tree-node{display:inline-flex;flex-direction:column;align-items:center;gap:4px;padding:12px 18px;background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-md);cursor:pointer;min-width:90px;box-shadow:var(--shadow-sm);transition:all var(--transition);position:relative;text-decoration:none;color:var(--text-dark);}.tree-node:hover{border-color:var(--primary);box-shadow:var(--shadow-md),0 0 0 3px rgba(139,69,19,0.1);transform:translateY(-4px);z-index:10;}.tree-node-name{font-size:1.05rem;font-weight:700;color:var(--text-dark);}.tree-node-gen{font-size:0.7rem;color:var(--text-light);letter-spacing:1px;}.tree-node.ancestor{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-color:var(--gold);box-shadow:var(--shadow-md),0 0 0 2px var(--gold);}.tree-node.ancestor .tree-node-name,.tree-node.ancestor .tree-node-gen{color:#fff;}.tree-node.ancestor::before{content:'始';position:absolute;top:-10px;left:50%;transform:translateX(-50%);background:var(--gold);color:#fff;font-size:0.65rem;padding:1px 6px;border-radius:4px;font-weight:700;}.tree-node.ancestor:hover{border-color:var(--gold-light);transform:translateY(-4px);box-shadow:var(--shadow-lg),0 0 0 3px rgba(200,147,58,0.3);}.calc-card{max-width:580px;margin:0 auto;background:transparent;border:none;border-radius:0;padding:32px 0;box-shadow:none;}.calc-form{display:grid;gap:20px;}.form-group{display:flex;flex-direction:column;gap:6px;}.form-group label{font-size:0.9rem;font-weight:600;color:var(--text-mid);letter-spacing:1px;}.form-group input,.form-group select{width:100%;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:#fff;font-family:var(--font-main);font-size:1rem;color:var(--text-dark);transition:border-color var(--transition);outline:none;}.form-group input:focus,.form-group select:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(139,69,19,0.1);}.result-box{margin-top:24px;padding:24px;background:linear-gradient(135deg,#fff3e0,#fff8f0);border:2px dashed var(--gold);border-radius:var(--radius-md);text-align:center;animation:fadeInUp 0.4s ease;}@keyframes fadeInUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:translateY(0);}}.result-label{font-size:0.85rem;color:var(--text-light);letter-spacing:2px;margin-bottom:12px;}.result-char-wrap{margin:8px 0;}.highlight-text{font-size:4rem;color:var(--primary);font-weight:900;text-shadow:2px 2px 8px rgba(139,69,19,0.2);display:inline-block;animation:scaleIn 0.4s ease;}@keyframes scaleIn{from{transform:scale(0.5);opacity:0;}to{transform:scale(1);opacity:1;}}.result-context{font-size:0.9rem;color:var(--text-mid);margin-top:8px;padding-top:12px;border-top:1px solid var(--border-light);}.gen-sequence{display:flex;flex-wrap:wrap;gap:6px;justify-content:center;margin-top:14px;}.gen-char{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border:1.5px solid var(--border);border-radius:6px;font-size:0.95rem;font-weight:600;color:var(--text-mid);background:#fff;transition:all var(--transition);}.gen-char.current{background:var(--primary);color:#fff;border-color:var(--primary);transform:scale(1.2);box-shadow:0 4px 12px rgba(139,69,19,0.35);}.ppt-viewer-wrap{display:flex;align-items:center;gap:16px;max-width:860px;margin:0 auto;}.ppt-viewer{flex:1;overflow:hidden;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);position:relative;}.ppt-track{display:flex;transition:transform 0.5s cubic-bezier(0.25,0.46,0.45,0.94);will-change:transform;cursor:grab;user-select:none;}.ppt-track.dragging{cursor:grabbing;transition:none;}.ppt-slide{flex:0 0 100%;position:relative;overflow:hidden;border-radius:var(--radius-md);aspect-ratio:16 / 9;background:var(--bg-dark);}.ppt-slide-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;text-align:center;}.ppt-slide[data-idx="0"] .ppt-slide-inner{background:linear-gradient(135deg,#1a0f0a 0%,#2d1a0e 40%,#3d2413 100%);}.ppt-slide[data-idx="1"] .ppt-slide-inner{background:linear-gradient(135deg,#0a1520 0%,#0d2233 40%,#1a3a52 100%);}.ppt-slide[data-idx="2"] .ppt-slide-inner{background:linear-gradient(135deg,#0f1a0a 0%,#1a2a0d 40%,#2a4015 100%);}.ppt-slide[data-idx="3"] .ppt-slide-inner{background:linear-gradient(135deg,#1a1020 0%,#2a1a35 40%,#3d2852 100%);}.ppt-slide[data-idx="4"] .ppt-slide-inner{background:linear-gradient(135deg,#151515 0%,#202020 40%,#303030 100%);}.ppt-deco{position:absolute;top:0;left:0;width:100%;height:100%;overflow:hidden;pointer-events:none;opacity:0.5;}.ppt-deco::before,.ppt-deco::after{content:'';position:absolute;border-radius:50%;opacity:0.06;filter:blur(20px);}.ppt-deco::before{width:200px;height:200px;top:-60px;right:-60px;background:var(--gold);}.ppt-deco::after{width:150px;height:150px;bottom:-40px;left:-30px;background:rgba(255,255,255,0.3);}.ppt-slide-icon{font-size:3.5rem;margin-bottom:20px;filter:drop-shadow(0 6px 12px rgba(0,0,0,0.4));animation:float-icon 3s ease-in-out infinite;}@keyframes float-icon{0%,100%{transform:translateY(0);}50%{transform:translateY(-8px);}}.ppt-slide-title{font-size:2rem;font-weight:700;color:#ffd7a0;margin-bottom:12px;letter-spacing:3px;text-shadow:0 2px 8px rgba(0,0,0,0.5);}.ppt-slide-subtitle{font-size:0.95rem;color:rgba(255,248,240,0.85);line-height:1.7;max-width:520px;letter-spacing:1px;margin-bottom:16px;}.ppt-slide-content{font-size:0.95rem;color:rgba(255,255,255,0.95);line-height:1.8;max-width:560px;margin:16px auto;padding:16px 20px;background:rgba(255,255,255,0.08);border-radius:8px;border-left:3px solid rgba(200,147,58,0.6);text-shadow:0 2px 4px rgba(0,0,0,0.3);}.ppt-slide-tags{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:20px;}.ppt-tag{padding:4px 12px;border:1px solid rgba(200,147,58,0.6);border-radius:100px;font-size:0.75rem;color:var(--gold-light);letter-spacing:1px;background:rgba(200,147,58,0.15);backdrop-filter:blur(4px);transition:all 0.3s ease;}.ppt-tag:hover{background:rgba(200,147,58,0.25);border-color:var(--gold-light);transform:translateY(-2px);}.slide-num{position:absolute;bottom:16px;right:20px;font-size:0.75rem;color:rgba(255,248,240,0.3);font-family:'Arial',monospace;}.ppt-arrow{width:44px;height:44px;border:2px solid var(--border);background:var(--bg-card);border-radius:50%;cursor:pointer;font-size:1.5rem;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--primary);transition:all var(--transition);box-shadow:var(--shadow-sm);}.ppt-arrow:hover{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:var(--shadow-md);}.ppt-indicators{display:flex;justify-content:center;gap:8px;margin-top:20px;}.dot{width:8px;height:8px;background:var(--border);border-radius:50%;cursor:pointer;transition:all var(--transition);}.dot.active{background:var(--primary);width:24px;border-radius:4px;}.ppt-page-info{text-align:center;font-size:0.8rem;color:var(--text-light);margin-top:8px;letter-spacing:2px;}.ppt-highlights{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:40px;max-width:900px;margin-left:auto;margin-right:auto;}.highlight-card{background:transparent;border:none;border-radius:0;padding:24px 20px;text-align:center;transition:transform 0.3s ease;box-shadow:none;}.highlight-card:hover{transform:translateY(-8px);box-shadow:none;}.highlight-icon{font-size:2.5rem;display:block;margin-bottom:12px;filter:drop-shadow(0 4px 8px rgba(0,0,0,0.15));}.highlight-card h4{font-size:1.1rem;font-weight:600;color:var(--primary);margin-bottom:8px;letter-spacing:1px;}.highlight-card p{font-size:0.85rem;color:var(--text-mid);line-height:1.6;}.erd-container{max-width:100%;}.erd-legend{display:flex;gap:20px;margin-bottom:24px;flex-wrap:wrap;}.legend-item{display:flex;align-items:center;gap:6px;font-size:0.8rem;color:var(--text-light);}.legend-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0;}.legend-dot.pk{background:var(--gold);}.legend-dot.fk{background:#3498db;}.legend-dot.idx{background:#2ecc71;}.erd-diagram{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px;}.erd-table{background:var(--bg-card);border:2px solid var(--border);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-md);transition:all var(--transition);}.erd-table:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-4px);}.erd-table-head{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;padding:12px 16px;font-weight:700;font-size:0.9rem;letter-spacing:1px;display:flex;align-items:center;gap:8px;}.erd-table-icon{font-size:1rem;}.erd-table-body{padding:12px;}.erd-field{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:6px;font-size:0.8rem;transition:background var(--transition);}.erd-field:hover{background:rgba(139,69,19,0.05);}.erd-field-key{width:20px;height:20px;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:0.65rem;font-weight:700;color:#fff;flex-shrink:0;font-family:'Arial',sans-serif;}.erd-field-key.pk{background:var(--gold);}.erd-field-key.fk{background:#3498db;}.erd-field-key.none{background:transparent;}.erd-field-name{font-weight:600;color:var(--text-dark);flex:1;}.erd-field-type{font-family:'Courier New',monospace;font-size:0.72rem;color:var(--text-light);background:var(--bg-alt);padding:1px 5px;border-radius:3px;}.erd-relations{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;}.erd-rel-item{background:var(--bg-card);border:1px solid var(--border-light);border-left:4px solid var(--primary);border-radius:var(--radius-sm);padding:14px;font-size:0.875rem;color:var(--text-mid);line-height:1.6;}.erd-rel-title{font-weight:700;color:var(--primary);margin-bottom:4px;font-size:0.9rem;}.blockchain-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px;}.bc-flow-card,.bc-verify-card{background:transparent;border:none;border-radius:0;padding:28px 0;box-shadow:none;transition:none;}.bc-flow-card:hover,.bc-verify-card:hover{box-shadow:none;border-color:transparent;transform:none;}.bc-subtitle{font-size:1.15rem;font-weight:700;color:var(--primary);margin-bottom:20px;padding-bottom:12px;border-bottom:1px solid var(--border-light);}.bc-desc{font-size:0.875rem;color:var(--text-light);margin-bottom:16px;}.bc-steps{display:flex;flex-direction:column;gap:12px;}.bc-step{display:flex;align-items:flex-start;gap:14px;padding:14px 0;background:transparent;border-radius:0;border:none;transition:transform var(--transition);cursor:default;}.bc-step:hover{background:transparent;border-color:transparent;transform:translateX(4px);}.bc-step-num{width:32px;height:32px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:0.85rem;font-weight:700;flex-shrink:0;}.bc-step-title{font-weight:700;font-size:0.9rem;color:var(--text-dark);margin-bottom:4px;}.bc-step-desc{font-size:0.8rem;color:var(--text-light);line-height:1.5;}.bc-arrow{text-align:center;color:var(--primary);font-size:1.2rem;opacity:0.4;}.bc-form{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap;}.bc-input{flex:1;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-family:'Courier New',monospace;font-size:0.85rem;outline:none;transition:border-color var(--transition);background:#fff;min-width:0;}.bc-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(139,69,19,0.1);}.bc-result{padding:16px;border-radius:var(--radius-sm);margin-bottom:16px;animation:fadeInUp 0.4s ease;}.bc-result.success{background:linear-gradient(135deg,#e8f5e9,#f1f8e9);border:1.5px solid #66bb6a;}.bc-result.fail{background:linear-gradient(135deg,#fdecea,#fff3f2);border:1.5px solid #ef5350;}.bc-result-title{font-weight:700;font-size:1rem;margin-bottom:8px;}.bc-result.success .bc-result-title{color:#2e7d32;}.bc-result.fail .bc-result-title{color:#c62828;}.bc-result-detail{font-size:0.8rem;color:var(--text-mid);font-family:'Courier New',monospace;line-height:1.8;word-break:break-all;}.bc-records{margin-top:16px;}.bc-records-title{font-size:0.8rem;color:var(--text-light);letter-spacing:1px;margin-bottom:10px;text-transform:uppercase;font-family:'Arial',sans-serif;}.bc-record-item{display:flex;align-items:center;gap:10px;padding:10px;border:1px solid var(--border-light);border-radius:var(--radius-sm);margin-bottom:8px;font-size:0.8rem;cursor:pointer;transition:all var(--transition);background:rgba(255,255,255,0.5);}.bc-record-item:hover{border-color:var(--primary);background:rgba(139,69,19,0.03);}.bc-record-dot{width:8px;height:8px;border-radius:50%;background:#4caf50;flex-shrink:0;box-shadow:0 0 6px rgba(76,175,80,0.5);animation:pulseDot 2s infinite;}@keyframes pulseDot{0%,100%{box-shadow:0 0 4px rgba(76,175,80,0.4);}50%{box-shadow:0 0 10px rgba(76,175,80,0.8);}}.bc-record-name{font-weight:700;color:var(--text-dark);}.bc-record-hash{font-family:'Courier New',monospace;color:var(--text-light);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1;}.bc-record-status{color:#4caf50;font-weight:700;flex-shrink:0;}.tech-stack-card{margin-top:0;}.tech-items{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin-top:16px;}.tech-item{display:flex;align-items:flex-start;gap:14px;padding:14px 0;background:transparent;border-radius:0;border:none;transition:transform 0.3s ease;}.tech-item:hover{background:transparent;border-color:transparent;transform:translateY(-2px);}.tech-item-icon{font-size:1.8rem;flex-shrink:0;width:40px;text-align:center;}.tech-item-name{font-weight:700;color:var(--text-dark);font-size:0.9rem;margin-bottom:4px;}.tech-item-desc{font-size:0.78rem;color:var(--text-light);line-height:1.5;}.guestbook-card{max-width:780px;margin:0 auto;background:transparent;border:none;border-radius:0;padding:32px 0;box-shadow:none;}.input-area{margin-bottom:28px;}.guest-name-row{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;}.guest-name-input{width:200px;padding:10px 0;border:none;border-bottom:1.5px solid var(--border);border-radius:0;font-family:var(--font-main);font-size:0.95rem;outline:none;transition:border-color var(--transition);background:transparent;}.guest-name-input:focus{border-color:var(--primary);box-shadow:none;}.name-hint{font-size:0.78rem;color:var(--text-light);}textarea#guestInput{width:100%;height:100px;padding:14px 0;border:none;border-bottom:1.5px solid var(--border);border-radius:0;resize:vertical;font-family:var(--font-main);font-size:0.95rem;outline:none;transition:border-color var(--transition);background:transparent;display:block;}textarea#guestInput:focus{border-color:var(--primary);box-shadow:none;}.input-footer{display:flex;align-items:center;justify-content:flex-end;gap:16px;margin-top:10px;}.char-count{font-size:0.8rem;color:var(--text-light);font-family:'Arial',sans-serif;}.guest-list{display:flex;flex-direction:column;gap:16px;}.guest-item{display:flex;gap:14px;padding:16px;background:rgba(255,255,255,0.6);border:1px solid var(--border-light);border-radius:var(--radius-md);transition:all var(--transition);animation:fadeInUp 0.4s ease;}.guest-item:hover{border-color:var(--border);box-shadow:var(--shadow-sm);}.guest-avatar{width:44px;height:44px;min-width:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1.1rem;box-shadow:0 2px 8px rgba(139,69,19,0.3);}.guest-content{flex:1;min-width:0;}.guest-meta{display:flex;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap;}.guest-name-tag{font-weight:700;color:var(--text-dark);font-size:0.95rem;}.guest-time{font-size:0.78rem;color:var(--text-light);font-family:'Arial',sans-serif;}.guest-text{font-size:0.92rem;color:var(--text-mid);line-height:1.7;word-break:break-word;}.modal{display:none;position:fixed;inset:0;z-index:2000;background:rgba(0,0,0,0.6);backdrop-filter:blur(4px);align-items:center;justify-content:center;}.modal.open{display:flex;}.modal-content{background:var(--bg-card);width:90%;max-width:440px;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);border:2px solid var(--border);position:relative;overflow:hidden;animation:modalIn 0.4s cubic-bezier(0.34,1.56,0.64,1);}.modal-content::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--gold),var(--primary),var(--gold));}@keyframes modalIn{from{opacity:0;transform:scale(0.85) translateY(20px);}to{opacity:1;transform:scale(1) translateY(0);}}.close-btn{position:absolute;top:16px;right:16px;width:30px;height:30px;border:none;background:rgba(139,69,19,0.1);color:var(--primary);border-radius:50%;cursor:pointer;font-size:0.9rem;display:flex;align-items:center;justify-content:center;transition:all var(--transition);z-index:10;}.close-btn:hover{background:var(--primary);color:#fff;}.modal-header{display:flex;align-items:center;gap:18px;padding:28px 24px 20px;border-bottom:1px solid var(--border-light);}.modal-img{width:80px;height:80px;border-radius:50%;object-fit:cover;border:3px solid var(--border);box-shadow:var(--shadow-sm);flex-shrink:0;}.modal-header-info h3{font-size:1.6rem;font-weight:700;color:var(--text-dark);margin-bottom:6px;}.modal-badge{display:inline-block;padding:3px 12px;background:rgba(139,69,19,0.1);color:var(--primary);border-radius:100px;font-size:0.78rem;font-weight:600;letter-spacing:1px;}.modal-body{padding:20px 24px;}.modal-section{display:flex;gap:14px;margin-bottom:16px;align-items:flex-start;}.modal-icon{font-size:1.1rem;margin-top:2px;}.modal-label{font-size:0.75rem;color:var(--text-light);letter-spacing:1px;margin-bottom:4px;font-family:'Arial',sans-serif;}.modal-bio,.modal-loc,.modal-bc{font-size:0.92rem;color:var(--text-mid);line-height:1.7;}.modal-bc{font-family:'Courier New',monospace;font-size:0.78rem;word-break:break-all;}.modal-footer{display:flex;gap:10px;justify-content:flex-end;padding:16px 24px 24px;border-top:1px solid var(--border-light);}.footer{background:var(--bg-dark);color:var(--text-white);padding:48px 0 32px;border-top:3px solid var(--gold);}.footer-content{text-align:center;}.footer-logo{font-size:1.3rem;font-weight:700;color:var(--gold-light);letter-spacing:3px;margin-bottom:20px;}.footer-links{display:flex;justify-content:center;gap:20px;flex-wrap:wrap;margin-bottom:24px;}.footer-links a{color:rgba(255,248,240,0.55);text-decoration:none;font-size:0.85rem;letter-spacing:1px;transition:color var(--transition);}.footer-links a:hover{color:var(--gold-light);}.footer-info p{font-size:0.82rem;color:rgba(255,248,240,0.4);letter-spacing:1px;line-height:1.8;}.footer-sub{margin-top:4px;}.footer-icp{margin-top:8px;padding-top:12px;border-top:1px solid rgba(255,248,240,0.1);}.footer-icp a{color:rgba(200,147,58,0.7);text-decoration:none;font-size:0.8rem;letter-spacing:2px;transition:all var(--transition);}.footer-icp a:hover{color:var(--gold-light);text-decoration:underline;}.back-to-top{position:fixed;bottom:30px;right:30px;width:44px;height:44px;background:var(--primary);color:#fff;border:none;border-radius:50%;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:all var(--transition);opacity:0;visibility:hidden;z-index:999;}.back-to-top.visible{opacity:1;visibility:visible;}.back-to-top:hover{background:var(--primary-dark);transform:translateY(-3px);box-shadow:var(--shadow-lg);}@media screen and (max-width:768px){:root{--header-h:56px;}.nav{display:none;flex-direction:column;position:fixed;top:var(--header-h);left:0;width:100%;background:rgba(45,26,14,0.98);backdrop-filter:blur(12px);padding:20px 0;gap:0;border-bottom:1px solid rgba(200,147,58,0.2);max-height:calc(100vh - var(--header-h));overflow-y:auto;}.nav.active{display:flex;}.nav-link{padding:14px 28px;border-radius:0;font-size:1rem;border-bottom:1px solid rgba(255,255,255,0.05);}.nav-link::after{display:none;}.hamburger{display:flex;}.section{padding:70px 0 50px;}.section-title{font-size:1.8rem;}.hero-section{min-height:100svh;}.hero-title{font-size:2.4rem;letter-spacing:4px;}.hero-stats{gap:16px;}.stat-num{font-size:1.8rem;}.blockchain-layout{grid-template-columns:1fr;}.erd-diagram{grid-template-columns:1fr;}.erd-relations{grid-template-columns:1fr;}.tech-items{grid-template-columns:1fr;}.ppt-viewer-wrap{gap:8px;}.ppt-arrow{width:36px;height:36px;font-size:1.2rem;}.tree-node{padding:8px 12px;min-width:70px;}.tree-node-name{font-size:0.9rem;}.guestbook-card{padding:20px 16px;}.guest-name-row{gap:8px;}.guest-name-input{width:100%;}.modal-content{width:95%;border-radius:var(--radius-md);}.modal-header{padding:24px 16px 16px;}.modal-body{padding:16px;}.modal-footer{padding:12px 16px 20px;}.back-to-top{bottom:16px;right:16px;}.bc-form{flex-direction:column;}.bc-input{width:100%;}}@media screen and (max-width:480px){.hero-title{font-size:1.9rem;letter-spacing:2px;}.hero-subtitle{font-size:0.85rem;letter-spacing:1px;}.hero-stats{gap:12px;}.stat-divider{display:none;}.logo-text{display:none;}}.fade-in{opacity:0;transform:translateY(20px);transition:opacity 0.6s ease,transform 0.6s ease;}.fade-in.visible{opacity:1;transform:translateY(0);}.qwen-layout{display:grid;grid-template-columns:1fr;gap:24px;margin-bottom:24px;max-width:900px;margin-left:auto;margin-right:auto;}.qwen-chat-container{display:flex;flex-direction:column;height:600px;max-width:100%;background:transparent;border:none;border-radius:0;box-shadow:none;}.qwen-messages{flex:1;overflow-y:auto;padding:20px 0;display:flex;flex-direction:column;gap:16px;background:transparent;border-radius:0;max-height:calc(600px - 120px);}.qwen-message{display:flex;gap:12px;animation:fadeInUp 0.3s ease;}.qwen-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.2rem;}.user-avatar{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;}.ai-avatar{background:linear-gradient(135deg,var(--gold),#a06820);color:#fff;}.qwen-content{flex:1;}.qwen-name{font-weight:700;color:var(--text-dark);font-size:0.9rem;margin-bottom:4px;}.qwen-text{color:var(--text-mid);line-height:1.6;background:#fff;padding:12px 16px;border-radius:18px;display:inline-block;max-width:85%;box-shadow:var(--shadow-sm);}.qwen-message.user-message .qwen-text{background:linear-gradient(135deg,var(--primary),#a0522d);color:#fff;text-align:right;}.welcome-message .qwen-text{background:linear-gradient(135deg,#e8f4fd,#f0f8ff);color:var(--text-mid);border-left:3px solid var(--gold);}.qwen-input-area{padding:16px;border-top:1px solid var(--border);}.qwen-input-area textarea{width:100%;height:80px;padding:12px 16px;border:1.5px solid var(--border);border-radius:var(--radius-sm);resize:vertical;font-family:var(--font-main);font-size:0.95rem;outline:none;transition:border-color var(--transition);background:#fff;margin-bottom:12px;}.qwen-input-area textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(139,69,19,0.1);}.qwen-multimodal-input{position:relative;}.qwen-image-upload{position:absolute;right:10px;bottom:10px;}.image-upload-label{display:flex;align-items:center;gap:6px;padding:6px 12px;background:var(--primary);color:white;border-radius:6px;cursor:pointer;font-size:0.8rem;transition:background var(--transition);}.image-upload-label:hover{background:var(--primary-dark);}.image-preview{position:absolute;top:-80px;right:0;width:120px;height:80px;border:2px solid var(--primary);border-radius:6px;overflow:hidden;display:none;background:var(--bg-paper);}.image-preview img{width:100%;height:100%;object-fit:cover;}.qwen-input-footer{display:flex;align-items:center;justify-content:space-between;}.qwen-tokens{font-size:0.8rem;color:var(--text-light);font-family:'Arial',sans-serif;}.qwen-config-panel{height:fit-content;align-self:flex-start;position:sticky;top:20px;}.qwen-form{display:flex;flex-direction:column;gap:16px;}.qwen-form .form-group{margin-bottom:0;}.qwen-form input[type="range"]{width:100%;margin:8px 0;}#tempValue{margin-left:8px;font-weight:700;color:var(--primary);}@media screen and (max-width:768px){.qwen-layout{grid-template-columns:1fr;}.qwen-chat-container{height:500px;margin-bottom:20px;}.qwen-messages{max-height:calc(500px - 120px);}.qwen-text{max-width:75%;}}