/** 尘渊文化 - 主样式表 (合并优化版) */

/* ========== 基础组件 ========== */
.section{padding:100px 0}
.section-header{margin-bottom:60px}
.section-tag{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;background:rgba(99,102,241,0.08);color:var(--primary);font-size:.875rem;font-weight:600;border-radius:50px;margin-bottom:1rem;letter-spacing:2px;text-transform:uppercase;border:1px solid rgba(99,102,241,0.15)}
.section-tag.light{background:rgba(255,255,255,0.15);color:var(--white)}
.section-title{font-size:3rem;font-weight:800;margin-bottom:1rem;color:var(--dark);letter-spacing:-0.02em;position:relative;display:inline-block}
.section-title.light{color:var(--white)}
.section-subtitle{font-size:1.25rem;color:var(--gray);max-width:700px;margin:24px auto 0;line-height:1.7}
.section-subtitle.light{color:rgba(255,255,255,0.7)}

/* ========== Hero组件 ========== */
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;background:rgba(99,102,241,0.1);border:1px solid rgba(99,102,241,0.3);border-radius:50px;color:var(--primary-light);font-size:.875rem;font-weight:600;margin-bottom:1.5rem;letter-spacing:3px;text-transform:uppercase;backdrop-filter:blur(10px)}
.hero-buttons{margin-top:2rem}
.hero-stats{padding-top:2rem;border-top:1px solid rgba(255,255,255,0.1);margin-top:3rem}
.stat-item{text-align:center;padding:15px;border-radius:16px;background:rgba(255,255,255,0.03);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,0.05);transition:all .4s ease}
.stat-item:hover{background:rgba(255,255,255,0.06);transform:translateY(-5px);border-color:rgba(99,102,241,0.2)}
.stat-number{font-size:2.25rem;font-weight:800;color:var(--white);background:linear-gradient(135deg,#fff 0%,#a5b4fc 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative;display:inline-block}
.stat-label{font-size:.875rem;color:rgba(255,255,255,0.6);margin-top:.25rem}

/* Hero视觉 */
.hero-visual{display:flex;justify-content:center;align-items:center;height:500px}
.ai-core{position:relative;width:300px;height:300px}
.core-ring{position:absolute;border:2px solid rgba(99,102,241,0.3);border-radius:50%;top:50%;left:50%;transform:translate(-50%,-50%)}
.ring-1{width:300px;height:300px;animation:pulse-ring 3s ease-out infinite}
.ring-2{width:220px;height:220px;animation:pulse-ring 3s ease-out infinite .5s}
.ring-3{width:140px;height:140px;animation:pulse-ring 3s ease-out infinite 1s}
.core-center{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:100px;height:100px;background:var(--gradient-1);border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 0 60px rgba(99,102,241,0.5);animation:pulse-core 2s ease-in-out infinite}
.core-icon{font-size:3rem;color:white;font-weight:400;font-family:'Ma Shan Zheng',cursive;text-shadow:0 0 20px rgba(255,255,255,0.8),0 0 40px rgba(99,102,241,0.6),0 4px 8px rgba(0,0,0,0.3)}
@keyframes pulse-ring{0%{transform:translate(-50%,-50%) scale(1);opacity:1}100%{transform:translate(-50%,-50%) scale(1.2);opacity:0}}
@keyframes pulse-core{0%,100%{box-shadow:0 0 40px rgba(99,102,241,0.5)}50%{box-shadow:0 0 80px rgba(99,102,241,0.8)}}

/* 滚动指示器 */
.scroll-indicator{position:absolute;bottom:30px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;color:rgba(255,255,255,0.5);font-size:.75rem;letter-spacing:2px}
.mouse{width:24px;height:40px;border:2px solid rgba(255,255,255,0.3);border-radius:12px;margin-bottom:8px;position:relative}
.wheel{width:4px;height:8px;background:rgba(255,255,255,0.5);border-radius:2px;position:absolute;top:8px;left:50%;transform:translateX(-50%);animation:scroll-wheel 1.5s ease-in-out infinite}
@keyframes scroll-wheel{0%{opacity:1;top:8px}100%{opacity:0;top:20px}}

/* ========== 关于卡片 ========== */
.about-section{background:var(--light)}
.about-card{background:var(--white);padding:40px 30px;border-radius:20px;text-align:center;transition:all .4s cubic-bezier(.175,.885,.32,1.275);height:100%;border:1px solid rgba(0,0,0,0.05);position:relative;overflow:hidden}
.about-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:var(--gradient-1);transform:scaleX(0);transition:transform .4s ease}
.about-card:hover{transform:translateY(-10px) scale(1.02);box-shadow:var(--shadow-xl)}
.about-card:hover::before{transform:scaleX(1)}
.about-card.featured{background:var(--gradient-1);color:white}
.about-card.featured h3,.about-card.featured p{color:white}
.card-icon{width:70px;height:70px;background:rgba(99,102,241,0.1);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px}
.about-card.featured .card-icon{background:rgba(255,255,255,0.2)}
.card-icon svg{width:32px;height:32px;color:var(--primary)}
.about-card.featured .card-icon svg{color:white}
.about-card h3{font-size:1.25rem;font-weight:600;margin-bottom:15px;color:var(--dark)}
.about-card p{color:var(--gray);font-size:.95rem;line-height:1.7}

/* ========== 服务卡片 ========== */
.services-section{background:var(--dark);position:relative;overflow:hidden}
.services-section::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse at 0% 0%,rgba(99,102,241,0.1) 0%,transparent 50%),radial-gradient(ellipse at 100% 100%,rgba(139,92,246,0.1) 0%,transparent 50%)}
.services-grid{position:relative;z-index:1}
.service-card{background:rgba(255,255,255,0.03);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,0.08);border-radius:20px;padding:35px;display:flex;gap:20px;transition:all .4s cubic-bezier(.175,.885,.32,1.275);height:100%;position:relative;overflow:hidden}
.service-card::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,transparent 60%);opacity:0;transition:opacity .4s ease;pointer-events:none}
.service-card:hover{background:rgba(255,255,255,0.08);transform:translateY(-8px) scale(1.01);border-color:rgba(99,102,241,0.4);box-shadow:0 20px 40px rgba(0,0,0,0.3),var(--shadow-glow)}
.service-card:hover::after{opacity:1}
.service-icon{width:60px;height:60px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.service-icon svg{width:28px;height:28px;color:white}
.ai-blue{background:linear-gradient(135deg,#3b82f6,#06b6d4)}
.ai-purple{background:linear-gradient(135deg,#8b5cf6,#a855f7)}
.ai-green{background:linear-gradient(135deg,#10b981,#22c55e)}
.ai-orange{background:linear-gradient(135deg,#f59e0b,#f97316)}
.ai-pink{background:linear-gradient(135deg,#ec4899,#f43f5e)}
.service-content h3{color:white;font-size:1.25rem;font-weight:600;margin-bottom:12px}
.service-content p{color:rgba(255,255,255,0.7);font-size:.95rem;margin-bottom:15px}
.service-features{list-style:none;padding:0;margin:0}
.service-features li{color:rgba(255,255,255,0.6);font-size:.875rem;margin-bottom:8px;display:flex;align-items:center}
.feature-dot{width:6px;height:6px;background:var(--primary-light);border-radius:50%;margin-right:10px}

/* ========== 案例卡片 ========== */
.cases-section{background:var(--light)}
.case-card{background:var(--white);border-radius:24px;overflow:hidden;box-shadow:var(--shadow-md);transition:all .4s cubic-bezier(.175,.885,.32,1.275);height:100%;position:relative;border:1px solid rgba(0,0,0,0.04)}
.case-card::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,transparent 0%,rgba(99,102,241,0.03) 100%);opacity:0;transition:opacity .4s ease;pointer-events:none;z-index:1}
.case-card:hover{transform:translateY(-12px) scale(1.02);box-shadow:var(--shadow-xl)}
.case-card:hover::before{opacity:1}
.case-image{height:200px;overflow:hidden;position:relative}
.case-placeholder{width:100%;height:100%;display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:600;color:white;transition:transform .6s ease}
.case-card:hover .case-placeholder{transform:scale(1.1)}
.case-1{background:linear-gradient(135deg,#6366f1 0%,#8b5cf6 50%,#a855f7 100%)}
.case-2{background:linear-gradient(135deg,#0ea5e9 0%,#06b6d4 50%,#14b8a6 100%)}
.case-3{background:linear-gradient(135deg,#10b981 0%,#22c55e 50%,#84cc16 100%)}
.case-content{padding:25px}
.case-tag{display:inline-block;padding:4px 12px;background:rgba(99,102,241,0.1);color:var(--primary);font-size:.75rem;font-weight:500;border-radius:50px;margin-bottom:12px;transition:all .3s ease}
.case-card:hover .case-tag{background:var(--primary);color:white}
.case-content h3{font-size:1.125rem;font-weight:600;margin-bottom:10px;color:var(--dark)}
.case-content p{color:var(--gray);font-size:.9rem;line-height:1.6;margin-bottom:15px}
.case-link{color:var(--primary);font-weight:500;text-decoration:none;transition:color .3s}
.case-link:hover{color:var(--primary-dark)}

/* ========== 合作伙伴 ========== */
.partners-section{background:var(--white);padding:80px 0}
.partners-logos{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:40px;margin-top:40px}
.partner-logo{padding:15px 30px;background:var(--light);border-radius:12px;color:var(--gray);font-weight:500;font-size:1rem;transition:all .4s cubic-bezier(.175,.885,.32,1.275);border:2px solid transparent}
.partner-logo:hover{background:var(--white);color:var(--primary);border-color:var(--primary-light);transform:translateY(-5px) scale(1.05);box-shadow:var(--shadow-lg)}

/* ========== CTA区域 ========== */
.cta-section{background:var(--light);padding:60px 0 100px}
.cta-box{background:var(--gradient-1);border-radius:24px;padding:50px 60px;color:white;position:relative;overflow:hidden;box-shadow:var(--shadow-glow)}
.cta-box::before{content:'';position:absolute;top:-50%;right:-20%;width:400px;height:400px;background:rgba(255,255,255,0.1);border-radius:50%;animation:float 6s ease-in-out infinite}
.cta-box::after{content:'';position:absolute;bottom:-30%;left:-10%;width:300px;height:300px;background:rgba(255,255,255,0.05);border-radius:50%;animation:float 8s ease-in-out infinite reverse}
.cta-box h2{font-size:2rem;font-weight:700;margin-bottom:10px;position:relative;z-index:1}
.cta-box p{color:rgba(255,255,255,0.8);margin:0;position:relative;z-index:1}
@keyframes float{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-20px) rotate(5deg)}}

/* ========== 联系区域 ========== */
.contact-section{background:linear-gradient(135deg,var(--light) 0%,var(--white) 100%);position:relative;overflow:hidden}
.contact-section::before{content:'';position:absolute;top:-50%;right:-20%;width:600px;height:600px;background:radial-gradient(circle,rgba(99,102,241,0.03) 0%,transparent 70%);pointer-events:none}
.contact-cards{margin-top:40px}
.contact-card-item{background:var(--white);border-radius:24px;padding:40px 30px;text-align:center;transition:all .4s cubic-bezier(.175,.885,.32,1.275);border:1px solid rgba(0,0,0,0.05);height:100%;position:relative;overflow:hidden;text-decoration:none;color:inherit;display:block}
.contact-card-item::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:var(--gradient-1);transform:scaleX(0);transition:transform .4s ease}
.contact-card-item:hover{transform:translateY(-10px);box-shadow:var(--shadow-xl)}
.contact-card-item:hover::before{transform:scaleX(1)}
.contact-card-icon{width:70px;height:70px;background:var(--gradient-1);border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;transition:all .4s ease}
.contact-card-icon svg{width:32px;height:32px;color:white}
.contact-card-item:hover .contact-card-icon{transform:scale(1.1) rotate(5deg);box-shadow:0 15px 35px rgba(99,102,241,0.3)}
.contact-card-item h4{font-size:1.1rem;font-weight:600;color:var(--dark);margin-bottom:8px}
.contact-card-item p{color:var(--primary);font-weight:500;font-size:.95rem;margin:0}
.contact-note{font-size:1rem}
.contact-note a{color:var(--primary);text-decoration:none;font-weight:500;border-bottom:2px solid transparent;transition:border-color .3s ease}
.contact-note a:hover{border-bottom-color:var(--primary)}

/* ========== Footer ========== */
.footer{background:var(--dark);color:white;padding:80px 0 30px}
.footer-brand{display:flex;align-items:center;margin-bottom:20px}
.footer-brand .brand-icon{width:36px;height:36px;font-size:1rem}
.footer-brand .brand-text{font-size:1.25rem;font-weight:700}
.footer-desc{color:rgba(255,255,255,0.6);font-size:.9rem;line-height:1.7;margin-bottom:25px}
.footer-social{display:flex;gap:12px}
.social-link{width:44px;height:44px;background:rgba(255,255,255,0.08);border-radius:12px;display:flex;align-items:center;justify-content:center;transition:all .4s cubic-bezier(.175,.885,.32,1.275);border:1px solid rgba(255,255,255,0.1)}
.social-link:hover{background:var(--gradient-1);transform:translateY(-5px) scale(1.1);border-color:transparent;box-shadow:0 10px 20px rgba(99,102,241,0.3)}
.social-link svg{width:18px;height:18px;color:white}
.footer-links h4{font-size:1rem;font-weight:600;margin-bottom:20px;color:white}
.footer-links ul{list-style:none;padding:0}
.footer-links li{margin-bottom:12px}
.footer-links a{color:rgba(255,255,255,0.6);text-decoration:none;font-size:.9rem;transition:all .3s ease;display:inline-block;position:relative}
.footer-links a::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--primary-light);transition:width .3s ease}
.footer-links a:hover{color:var(--primary-light);transform:translateX(5px)}
.footer-links a:hover::after{width:100%}
.footer-bottom{margin-top:60px;padding-top:30px;border-top:1px solid rgba(255,255,255,0.1)}
.footer-bottom p{color:rgba(255,255,255,0.4);font-size:.875rem;margin:0}
.footer-bottom a{color:rgba(255,255,255,0.5);text-decoration:none;transition:color .3s ease}
.footer-bottom a:hover{color:var(--primary-light)}

/* ========== 返回顶部 ========== */
.back-to-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--primary);border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(20px);transition:all .4s cubic-bezier(.175,.885,.32,1.275);z-index:1000;box-shadow:0 4px 15px rgba(99,102,241,0.4)}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{transform:translateY(-5px) scale(1.1);box-shadow:0 8px 25px rgba(99,102,241,0.5)}
.back-to-top svg{width:24px;height:24px;color:white}
.back-to-top:focus{outline:3px solid rgba(99,102,241,0.5);outline-offset:2px}

/* ========== 动画工具类 ========== */
[data-animate]{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
[data-animate].animate-in{opacity:1;transform:translateY(0)}
.anim-fade-in{animation:fadeIn .6s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}

/* ========== 响应式 ========== */
@media(max-width:991px){
.hero-title{font-size:2.5rem}
.section-title{font-size:2rem}
.cta-box{padding:40px;text-align:center}
}

@media(max-width:767px){
.hero-title{font-size:2rem}
.hero-subtitle{font-size:1rem}
.section{padding:60px 0}
.service-card{flex-direction:column}
.partners-logos{gap:20px}
.partner-logo{padding:10px 20px;font-size:.875rem}
}

/* ========== 减少动画偏好 ========== */
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
[data-animate]{opacity:1;transform:none}
.page-loader{display:none}
}