:root{--bg-dark:#0a0a0a;--bg-card:#1a1612;--primary-gold:#c5a059;--secondary-gold:#8b6b3d;--text-main:#e0d6c0;--text-muted:#a09888;--accent-red:#8b1e1e;--border-gold:#8b6b3d4d;--border-light:#e0d6c01a;--font-serif:"Microsoft YaHei", "PingFang SC", "Noto Serif SC", "Songti SC", SimSun, serif;--font-sans:"Microsoft YaHei", "PingFang SC", "Noto Sans SC", "Segoe UI", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{color:var(--text-main);font-family:var(--font-sans);background-color:#050505;line-height:1.6;overflow-x:hidden}img{max-width:100%}.app-shell{background:#050505;min-height:100vh}h1,h2,h3,h4,.nav-item{font-family:var(--font-serif);text-transform:uppercase;letter-spacing:1px}.layout-container{max-width:1200px;margin:0 auto;padding:0 20px}.header{z-index:100;background:linear-gradient(#000c,#0000);justify-content:space-between;align-items:center;height:100px;padding:0 60px;display:flex;position:absolute;top:0;left:0;right:0}.logo{color:var(--primary-gold);align-items:center;gap:12px;font-size:1.5rem;font-weight:700;display:flex}.nav{gap:30px;display:flex}.nav-item{color:var(--text-muted);cursor:pointer;font-size:.9rem;text-decoration:none;transition:all .3s}.nav-item:hover,.nav-item.active{color:var(--primary-gold);text-shadow:0 0 10px #c5a05980}.download-btn-top{color:#fff;font-family:var(--font-serif);cursor:pointer;background:linear-gradient(135deg,#8b1e1e,#5a1212);border:1px solid #c5a059;border-radius:4px;align-items:center;gap:8px;padding:8px 20px;font-size:.8rem;text-decoration:none;display:flex}.hero{text-align:center;flex-direction:column;justify-content:center;align-items:center;width:100%;height:900px;margin-bottom:80px;padding-top:100px;display:flex;position:relative;overflow:hidden}.hero-bg{z-index:-1;background-image:url(/images/hero_bg.webp);background-position:50%;background-size:cover;position:absolute;inset:0}.hero-logo{font-size:8rem;font-family:var(--font-serif);background:linear-gradient(gold,#b7791f);-webkit-text-fill-color:transparent;filter:drop-shadow(0 5px 30px #000);-webkit-background-clip:text;margin-bottom:10px}.hero-subtitle{color:#c5a059;font-size:2.2rem;font-family:var(--font-serif);text-shadow:0 0 30px #000,0 4px 15px #000000e6;letter-spacing:6px;margin-bottom:25px;font-weight:700}.hero-desc{color:#fff;text-shadow:0 2px 15px #000,0 0 10px #000c;max-width:800px;margin-bottom:40px;font-size:1.3rem;font-weight:500;line-height:1.8}.hero-actions{gap:20px;display:flex}.btn-large{font-size:1.2rem;font-family:var(--font-serif);cursor:pointer;border-radius:4px;justify-content:center;align-items:center;padding:12px 40px;text-decoration:none;transition:all .3s;display:inline-flex}.btn-primary{border:1px solid var(--primary-gold);color:#fff;background:linear-gradient(#a02020,#701010)}.btn-primary:hover{filter:brightness(1.2);transform:translateY(-2px);box-shadow:0 10px 20px #0006}.btn-outline{border:1px solid var(--border-gold);color:var(--primary-gold);background:#1a1612cc}.btn-outline:hover{background:var(--bg-card);border-color:var(--primary-gold)}.realistic-icon{background:linear-gradient(145deg,#2a2a2a,#1a1a1a);border:1px solid #ffffff1a;border-radius:12px;justify-content:center;align-items:center;width:48px;height:48px;margin-right:12px;transition:all .3s;display:inline-flex;position:relative;overflow:hidden;box-shadow:4px 4px 8px #00000080,-1px -1px 2px #ffffff0d,inset 0 0 10px #0000004d}.realistic-icon:after{content:"";pointer-events:none;background:linear-gradient(#ffffff1a 0%,#0000 100%);width:100%;height:50%;position:absolute;top:0;left:0}.resource-bar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#0006;border:1px solid #c5a05933;border-radius:50px;gap:20px;margin-top:50px;padding:15px 30px;display:flex}.resource-item{font-family:var(--font-serif);color:var(--text-main);text-shadow:0 2px 4px #00000080;align-items:center;font-size:1.1rem;display:flex}.icon-food{color:#f6ad55;filter:drop-shadow(0 0 5px #f6ad5580)}.icon-wood{color:#a67c52;filter:drop-shadow(0 0 5px #a67c5280)}.icon-stone{color:#a0a0a0;filter:drop-shadow(0 0 5px #a0a0a080)}.icon-metal{color:gold;filter:drop-shadow(0 0 5px #ffd70080)}.icon-pop{color:#4fd1c5;filter:drop-shadow(0 0 5px #4fd1c580)}.icon-treasure{color:#d53f8c;filter:drop-shadow(0 0 5px #d53f8c80)}.feature-card .realistic-icon{width:64px;height:64px;margin-bottom:20px;margin-right:0}.section{content-visibility:auto;contain-intrinsic-size:760px;margin-bottom:80px}.section-title-container{border-bottom:1px solid var(--border-gold);justify-content:space-between;align-items:flex-end;margin-bottom:30px;padding-bottom:10px;display:flex;position:relative}.section-title-container:after{content:"";background:var(--primary-gold);width:100px;height:1px;box-shadow:0 0 10px var(--primary-gold);position:absolute;bottom:-1px;left:0}.section-title{color:var(--primary-gold);align-items:center;gap:15px;font-size:1.8rem;display:flex}.section-title i{opacity:.7;font-size:1.2rem}.view-all{color:var(--text-muted);font-size:.8rem;font-family:var(--font-serif);text-decoration:none}.view-all:hover{color:var(--primary-gold)}.grid-4{grid-template-columns:repeat(4,1fr);gap:20px;display:grid}.grid-3{grid-template-columns:repeat(3,1fr);gap:30px;display:grid}.grid-2{grid-template-columns:1fr 1fr;gap:30px;display:grid}.card{background:var(--bg-card);border:1px solid var(--border-gold);transition:all .3s;position:relative;overflow:hidden;box-shadow:inset 0 0 20px #00000080}.card:hover{border-color:var(--primary-gold);transform:translateY(-5px);box-shadow:0 10px 30px #000000b3,inset 0 0 30px #c5a0591a}.card:after{content:"";border-top:2px solid var(--primary-gold);border-right:2px solid var(--primary-gold);opacity:.3;width:20px;height:20px;transition:opacity .3s;position:absolute;top:0;right:0}.card:hover:after{opacity:1}.card:before{content:"";border-bottom:2px solid var(--primary-gold);border-left:2px solid var(--primary-gold);opacity:.3;width:20px;height:20px;transition:opacity .3s;position:absolute;bottom:0;left:0}.card:hover:before{opacity:1}.civ-card{align-items:center;gap:15px;padding:15px;display:flex}.civ-icon{border:2px solid var(--primary-gold);background:#0000004d;border-radius:50%;width:50px;height:50px;padding:5px}.civ-info h3{margin-bottom:2px;font-size:1.1rem}.civ-info p{color:var(--text-muted);font-size:.75rem}.civ-unit{color:var(--primary-gold);font-size:.7rem;font-family:var(--font-serif);margin-top:5px}.unit-card{padding:0}.unit-img{object-fit:cover;filter:sepia(.3)contrast(1.1);background-position:50%;background-repeat:no-repeat;width:100%;height:150px}.unit-body{text-align:center;padding:15px}.unit-name{margin-bottom:5px;font-size:1.1rem}.unit-desc{color:var(--text-muted);font-size:.8rem}.map-card{flex-direction:column;height:250px;display:flex}.map-img{background-position:50%;background-size:cover;flex:1;position:relative}.map-img:after{content:"";background:linear-gradient(#0000,#000000e6);position:absolute;inset:0}.map-overlay{position:absolute;bottom:15px;left:15px}.map-name{margin-bottom:2px;font-size:1.2rem}.map-desc{color:var(--primary-gold);font-size:.8rem}.tech-container{justify-content:space-between;align-items:center;gap:20px;padding:40px 0;display:flex;position:relative}.tech-container:before{content:"";background:linear-gradient(90deg, transparent, var(--border-gold), transparent);z-index:0;height:2px;position:absolute;top:50%;left:50px;right:50px}.tech-stage{z-index:1;flex-direction:column;flex:1;align-items:center;gap:20px;display:flex}.tech-matrix-container{-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);background:#191919cc;border:1px solid #c5a05966;border-radius:8px;padding:40px;overflow-x:auto;box-shadow:0 10px 30px #00000080,inset 0 0 20px #c5a0590d}.tech-phases-header{grid-template-columns:180px repeat(3,1fr);gap:20px;margin-bottom:35px;padding-left:20px;display:grid}.phase-item{border:1px solid var(--primary-gold);text-align:center;font-family:var(--font-serif);color:var(--primary-gold);clip-path:polygon(10% 0,90% 0,100% 50%,90% 100%,10% 100%,0 50%);text-shadow:0 0 10px #c5a05980;background:linear-gradient(#323232e6 0%,#1e1e1ee6 100%);justify-content:center;align-items:center;gap:12px;padding:12px 20px;font-size:1.15rem;display:flex;box-shadow:0 4px 15px #0000004d}.tech-grid{flex-direction:column;gap:20px;display:flex}.tech-row{grid-template-columns:180px repeat(4,1fr);align-items:center;gap:20px;display:grid}.category-badge{border:1px solid #ffffff26;border-left:5px solid var(--primary-gold);color:var(--text-main);font-family:var(--font-serif);background:#2d2d2de6;border-radius:4px;align-items:center;gap:15px;padding:12px 18px;font-size:1.1rem;display:flex;box-shadow:4px 4px 15px #0009}.category-icon-circle{background:#ffffff0d;border:1px solid #c5a05980;border-radius:50%;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.tech-capsule{color:var(--text-main);cursor:pointer;white-space:nowrap;background:#3c3c3cb3;border:1px solid #c5a0594d;border-radius:25px;align-items:center;gap:12px;padding:10px 18px;font-size:.95rem;transition:all .3s cubic-bezier(.4,0,.2,1);display:flex;box-shadow:0 2px 8px #0006}.tech-capsule:hover{border-color:var(--primary-gold);background:#505050e6;transform:translateY(-2px);box-shadow:0 0 20px #c5a05966}.tech-capsule-icon{filter:sepia()saturate(2)hue-rotate(-10deg);font-size:1.1rem}.stage-icon{background:var(--bg-card);border:2px solid var(--primary-gold);border-radius:4px;justify-content:center;align-items:center;width:60px;height:60px;font-size:1.5rem;display:flex;box-shadow:0 0 20px #c5a05933}.stage-name{font-family:var(--font-serif);color:var(--primary-gold);font-size:1rem}.tech-list{grid-template-columns:repeat(2,1fr);gap:10px;width:100%;display:grid}.tech-item{border:1px solid var(--border-light);text-align:center;background:#0006;border-radius:4px;padding:8px;font-size:.75rem;transition:all .3s}.tech-item:hover{border-color:var(--primary-gold);background:#c5a0591a}.feature-card{text-align:center;padding:30px}.feature-icon{margin-bottom:20px;font-size:3rem;display:block}.feature-card h3{margin-bottom:15px}.feature-card p{color:var(--text-muted);font-size:.9rem}.update-item{background:var(--bg-card);border:1px solid var(--border-gold);gap:20px;margin-bottom:15px;padding:20px;display:flex}.update-date{border-right:1px solid var(--border-gold);width:100px;font-family:var(--font-serif);color:var(--text-muted);flex-direction:column;flex-shrink:0;justify-content:center;align-items:center;font-size:.8rem;display:flex}.update-badge{background:var(--accent-red);color:#fff;border-radius:2px;margin-top:5px;padding:2px 8px;font-size:.7rem}.update-content h3{margin-bottom:8px;font-size:1.1rem}.update-content p{color:var(--text-muted);font-size:.9rem}.footer{border-top:1px solid var(--border-gold);background:#000c;margin-top:100px;padding:60px 0}.footer-top{justify-content:space-between;margin-bottom:40px;display:flex}.footer-col h4{color:var(--primary-gold);margin-bottom:20px;font-size:1rem}.footer-links{list-style:none}.footer-links li{margin-bottom:10px}.footer-links a{color:var(--text-muted);font-size:.9rem;text-decoration:none}.footer-links a:hover{color:var(--primary-gold)}.footer-bottom{border-top:1px solid var(--border-light);color:var(--text-muted);justify-content:space-between;align-items:center;padding-top:40px;font-size:.8rem;display:flex}.social-icons{gap:15px;display:flex}.social-icons i{cursor:pointer;font-size:1.2rem;transition:color .3s}.social-icons i:hover{color:var(--primary-gold)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:.8s ease-out forwards fadeInUp}.modal-overlay{z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#000000f2;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-content{border:1px solid var(--primary-gold);background:#0a0a0a;flex-direction:column;width:1000px;max-width:95vw;max-height:90vh;display:flex;position:relative;overflow:hidden;box-shadow:0 0 50px #000}.modal-close{color:var(--text-muted);cursor:pointer;z-index:10;background:0 0;border:none;position:absolute;top:20px;right:20px}.modal-header{text-align:center;padding:40px 40px 20px}.modal-title{color:#c53030;font-size:3rem;font-family:var(--font-serif);text-shadow:0 0 20px #c5a05933}.modal-body{grid-template-columns:1.2fr 1fr;gap:40px;padding:0 40px 40px;display:grid;overflow-y:auto}.modal-image-container{border:1px solid var(--border-gold);border-radius:4px;height:500px;overflow:hidden}.modal-image-container img{object-fit:cover;width:100%;height:100%}.modal-info{flex-direction:column;display:flex}.modal-tabs{border-bottom:1px solid var(--border-gold);gap:30px;margin-bottom:30px;display:flex}.modal-tab{color:var(--text-muted);font-family:var(--font-serif);cursor:pointer;padding:10px 0;transition:color .3s;position:relative}.modal-tab.active{color:var(--primary-gold)}.modal-tab.active:after{content:"";background:var(--primary-gold);height:2px;box-shadow:0 0 10px var(--primary-gold);position:absolute;bottom:-1px;left:0;right:0}.modal-desc{color:var(--text-main);font-size:1.1rem;line-height:1.8}@media (width<=768px){.header{-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);background:#00000080;height:70px;padding:0 20px}.nav{display:none}.logo span{font-size:1.2rem}.download-btn-top{padding:6px 12px;font-size:.75rem}.hero{height:auto;min-height:100vh;padding:100px 20px 40px}.hero-logo{font-size:4rem}.hero-subtitle{letter-spacing:2px;font-size:1.4rem}.hero-desc{margin-bottom:30px;font-size:1rem}.hero-actions{flex-direction:column;gap:15px;width:100%}.btn-large{justify-content:center;width:100%}.resource-bar{border-radius:15px;flex-wrap:wrap;justify-content:center;gap:15px;width:100%;margin-top:40px;padding:20px}.resource-item{flex:40%;justify-content:flex-start;font-size:.9rem}.section{padding:60px 0}.grid-4,.grid-3,.grid-2{gap:20px;grid-template-columns:1fr!important}.tech-matrix-container{-webkit-overflow-scrolling:touch;padding:15px 10px;overflow-x:auto}.tech-phases-header,.tech-grid{grid-template-columns:100px repeat(3,160px)}.modal-content{width:95vw;height:95vh}.modal-body{grid-template-columns:1fr;padding:20px}.modal-image-container{height:250px}.footer-top{text-align:center;grid-template-columns:1fr;gap:40px}.footer-col{align-items:center}}