/* 全局重置与基础 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Oxygen,Ubuntu,Cantarell,'Open Sans','Helvetica Neue',sans-serif;background:#f8f9fa;color:#1a1a2e;line-height:1.6;transition:background .3s,color .3s}
body.dark{background:#0f0f1a;color:#e0e0e0}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.btn{display:inline-block;padding:12px 28px;border-radius:50px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s;border:none;background:linear-gradient(135deg,#ffd700,#ffaa00);color:#1a1a2e;box-shadow:0 4px 15px rgba(255,215,0,.3)}
.btn:hover{transform:translateY(-3px);box-shadow:0 8px 25px rgba(255,215,0,.4)}
.btn-outline{background:transparent;border:2px solid #ffd700;color:#ffd700}
.btn-outline:hover{background:#ffd700;color:#1a1a2e}
.section{padding:80px 0}
.section-title{text-align:center;margin-bottom:50px}
.section-title h2{font-size:2.2rem;font-weight:700;margin-bottom:10px;position:relative;display:inline-block}
.section-title h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,#ffd700,#ffaa00);margin:10px auto 0;border-radius:2px}
.section-title p{color:#666;font-size:1.05rem;max-width:600px;margin:0 auto}
.dark .section-title p{color:#aaa}
.card{background:#fff;border-radius:16px;padding:30px;box-shadow:0 2px 20px rgba(0,0,0,.06);transition:all .3s;backdrop-filter:blur(10px);background:rgba(255,255,255,.85)}
.dark .card{background:rgba(30,30,50,.85);box-shadow:0 2px 20px rgba(0,0,0,.3)}
.card:hover{transform:translateY(-5px);box-shadow:0 8px 30px rgba(0,0,0,.1)}
.dark .card:hover{box-shadow:0 8px 30px rgba(0,0,0,.4)}
.grid{display:grid;gap:30px}
.flex{display:flex;flex-wrap:wrap;gap:20px}
.text-center{text-align:center}
.mt-20{margin-top:20px}
.mb-20{margin-bottom:20px}
.hidden{display:none}
@media(max-width:768px){.section{padding:50px 0}.section-title h2{font-size:1.7rem}}

/* header */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(26,26,46,.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,215,0,.1);transition:background .3s}
.dark .header{background:rgba(15,15,26,.95)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:10px}
.logo svg{width:40px;height:40px}
.logo span{font-size:1.5rem;font-weight:700;color:#ffd700}
.nav{display:flex;gap:5px}
.nav a{padding:8px 16px;border-radius:8px;font-size:.95rem;font-weight:500;color:#ccc;transition:all .3s;position:relative}
.nav a:hover,.nav a.active{color:#ffd700;background:rgba(255,215,0,.1)}
.nav a.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;background:#ffd700;border-radius:2px}
.header-actions{display:flex;align-items:center;gap:15px}
.theme-toggle{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#fff;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;transition:all .3s}
.theme-toggle:hover{background:rgba(255,215,0,.2);border-color:#ffd700}
.menu-toggle{display:none;background:transparent;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:5px}
.search-btn{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#fff;width:40px;height:40px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:all .3s}
.search-btn:hover{background:rgba(255,215,0,.2)}
@media(max-width:992px){.nav{position:fixed;top:70px;left:0;right:0;background:rgba(26,26,46,.98);backdrop-filter:blur(20px);flex-direction:column;padding:20px;gap:5px;transform:translateY(-120%);opacity:0;transition:all .4s;border-bottom:1px solid rgba(255,215,0,.1)}.nav.open{transform:translateY(0);opacity:1}.menu-toggle{display:block}.nav a{padding:12px 20px;font-size:1.05rem}}

/* hero */
.hero{position:relative;padding-top:70px;overflow:hidden;min-height:90vh;display:flex;align-items:center;background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%)}
.hero::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 30% 50%,rgba(255,215,0,.08) 0%,transparent 60%),radial-gradient(circle at 70% 80%,rgba(255,215,0,.05) 0%,transparent 50%);z-index:1}
.hero .container{position:relative;z-index:2;text-align:center;padding:60px 20px}
.hero h1{font-size:3.2rem;font-weight:800;color:#fff;margin-bottom:20px;line-height:1.2}
.hero h1 span{background:linear-gradient(135deg,#ffd700,#ffaa00);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:1.15rem;color:rgba(255,255,255,.75);max-width:700px;margin:0 auto 30px;line-height:1.7}
.hero-buttons{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}
.hero-badge{display:inline-block;padding:6px 20px;border-radius:50px;background:rgba(255,215,0,.15);color:#ffd700;font-size:.85rem;font-weight:600;margin-bottom:20px;border:1px solid rgba(255,215,0,.2)}
.hero-stats{display:flex;justify-content:center;gap:40px;margin-top:50px;flex-wrap:wrap}
.hero-stat{text-align:center;color:#fff}
.hero-stat .num{font-size:2.2rem;font-weight:700;color:#ffd700}
.hero-stat .label{font-size:.9rem;color:rgba(255,255,255,.6);margin-top:5px}
@media(max-width:768px){.hero h1{font-size:2rem}.hero p{font-size:1rem}.hero-stats{gap:20px}.hero-stat .num{font-size:1.8rem}}

/* carousel */
.carousel{position:relative;overflow:hidden;border-radius:20px;margin-top:40px;max-width:900px;margin-left:auto;margin-right:auto}
.carousel-track{display:flex;transition:transform .6s cubic-bezier(.25,.46,.45,.94)}
.carousel-slide{min-width:100%;padding:40px;background:rgba(255,255,255,.08);backdrop-filter:blur(10px);border-radius:20px;border:1px solid rgba(255,255,255,.1);text-align:center;color:#fff}
.carousel-slide h3{font-size:1.5rem;margin-bottom:10px;color:#ffd700}
.carousel-slide p{color:rgba(255,255,255,.7);max-width:600px;margin:0 auto}
.carousel-dots{display:flex;justify-content:center;gap:10px;margin-top:20px}
.carousel-dots button{width:12px;height:12px;border-radius:50%;border:2px solid rgba(255,215,0,.4);background:transparent;cursor:pointer;transition:all .3s}
.carousel-dots button.active{background:#ffd700;border-color:#ffd700;transform:scale(1.2)}
.carousel-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);color:#fff;width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:1.2rem;transition:all .3s;z-index:5;display:flex;align-items:center;justify-content:center}
.carousel-btn:hover{background:rgba(255,215,0,.2);border-color:#ffd700}
.carousel-btn.prev{left:10px}
.carousel-btn.next{right:10px}
@media(max-width:768px){.carousel-slide{padding:25px 15px}.carousel-btn{width:36px;height:36px;font-size:1rem}}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
@media(max-width:768px){.about-grid{grid-template-columns:1fr;gap:30px}}
.about-content h2{font-size:2rem;margin-bottom:20px}
.about-content h2 span{color:#ffd700}
.about-content p{margin-bottom:15px;color:#555}
.dark .about-content p{color:#bbb}
.about-image{background:linear-gradient(135deg,#1a1a2e,#0f3460);border-radius:20px;padding:40px;color:#fff;text-align:center;min-height:300px;display:flex;flex-direction:column;justify-content:center}
.about-image svg{width:80px;height:80px;margin:0 auto 20px;fill:#ffd700}

/* brand story */
.brand-story{background:linear-gradient(135deg,#f0f0ff,#e8e8f8)}
.dark .brand-story{background:linear-gradient(135deg,#15152a,#1a1a35)}
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
@media(max-width:768px){.story-grid{grid-template-columns:1fr}}
.story-text h3{font-size:1.8rem;margin-bottom:20px}
.story-text p{margin-bottom:15px;color:#555}
.dark .story-text p{color:#bbb}
.story-image{background:rgba(255,215,0,.1);border-radius:20px;padding:30px;text-align:center;border:1px solid rgba(255,215,0,.2)}

/* culture */
.culture-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:25px}
.culture-item{text-align:center;padding:30px 20px}
.culture-item .icon{width:60px;height:60px;margin:0 auto 15px;background:linear-gradient(135deg,#ffd700,#ffaa00);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.5rem;color:#1a1a2e}
.culture-item h4{font-size:1.2rem;margin-bottom:10px}
.culture-item p{color:#666;font-size:.95rem}
.dark .culture-item p{color:#aaa}

/* team */
.team-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:25px}
.team-card{text-align:center;padding:25px 15px}
.team-card .avatar{width:100px;height:100px;border-radius:50%;margin:0 auto 15px;background:linear-gradient(135deg,#1a1a2e,#0f3460);display:flex;align-items:center;justify-content:center;color:#ffd700;font-size:2.5rem;font-weight:700}
.team-card h4{font-size:1.1rem;margin-bottom:5px}
.team-card .role{color:#ffd700;font-size:.9rem;font-weight:600;margin-bottom:10px}
.team-card p{color:#666;font-size:.9rem}
.dark .team-card p{color:#aaa}

/* products */
.products-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.product-card{padding:30px 20px;text-align:center}
.product-card .icon{font-size:2.5rem;margin-bottom:15px}
.product-card h4{font-size:1.2rem;margin-bottom:10px}
.product-card p{color:#666;font-size:.95rem;margin-bottom:15px}
.dark .product-card p{color:#aaa}
.product-card .tag{display:inline-block;padding:4px 12px;border-radius:50px;background:rgba(255,215,0,.15);color:#ffd700;font-size:.8rem;font-weight:600}

/* advantages */
.advantages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}
.advantage-item{text-align:center;padding:25px 15px}
.advantage-item .num{font-size:2rem;font-weight:700;color:#ffd700;margin-bottom:10px}
.advantage-item h4{font-size:1.1rem;margin-bottom:8px}
.advantage-item p{color:#666;font-size:.9rem}
.dark .advantage-item p{color:#aaa}

/* service */
.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:25px}
.service-card{padding:25px 20px}
.service-card h4{font-size:1.15rem;margin-bottom:10px;display:flex;align-items:center;gap:10px}
.service-card h4 .s-icon{color:#ffd700}
.service-card p{color:#666;font-size:.95rem}
.dark .service-card p{color:#aaa}

/* solutions */
.solutions-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:25px}
.solution-card{padding:25px 20px;border-left:4px solid #ffd700}
.solution-card h4{font-size:1.15rem;margin-bottom:8px}
.solution-card p{color:#666;font-size:.95rem}
.dark .solution-card p{color:#aaa}

/* industries */
.industries-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:15px}
.industry-item{text-align:center;padding:20px 10px;border-radius:12px;background:rgba(255,215,0,.05);border:1px solid rgba(255,215,0,.1);transition:all .3s}
.industry-item:hover{border-color:#ffd700;background:rgba(255,215,0,.1)}
.industry-item .icon{font-size:2rem;margin-bottom:8px}
.industry-item span{font-size:.95rem;font-weight:500}

/* data */
.data-section{background:linear-gradient(135deg,#1a1a2e,#0f3460);color:#fff;text-align:center}
.data-section .section-title p{color:rgba(255,255,255,.6)}
.data-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px}
.data-item .num{font-size:2.5rem;font-weight:700;color:#ffd700;margin-bottom:5px}
.data-item .label{color:rgba(255,255,255,.7);font-size:1rem}

/* cases */
.cases-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.case-card{padding:25px 20px}
.case-card .case-tag{display:inline-block;padding:4px 12px;border-radius:50px;background:rgba(255,215,0,.15);color:#ffd700;font-size:.8rem;font-weight:600;margin-bottom:10px}
.case-card h4{font-size:1.1rem;margin-bottom:8px}
.case-card p{color:#666;font-size:.9rem}
.dark .case-card p{color:#aaa}

/* partners */
.partners-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:15px;align-items:center}
.partner-item{text-align:center;padding:15px;border-radius:12px;background:rgba(255,255,255,.5);border:1px solid rgba(0,0,0,.05);transition:all .3s;font-weight:600;color:#555}
.dark .partner-item{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1);color:#aaa}
.partner-item:hover{border-color:#ffd700;transform:scale(1.05)}

/* testimonials */
.testimonials-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.testimonial-card{padding:25px 20px;position:relative}
.testimonial-card::before{content:'"';font-size:3rem;color:#ffd700;position:absolute;top:10px;left:20px;opacity:.3;font-family:Georgia,serif}
.testimonial-card p{color:#555;font-style:italic;margin-bottom:15px;padding-top:15px}
.dark .testimonial-card p{color:#bbb}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-author .av{width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,#ffd700,#ffaa00);display:flex;align-items:center;justify-content:center;font-weight:700;color:#1a1a2e}
.testimonial-author .info strong{display:block;font-size:.95rem}
.testimonial-author .info span{font-size:.82rem;color:#888}
.dark .testimonial-author .info span{color:#999}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:25px}
.news-card{padding:25px 20px}
.news-card .date{font-size:.85rem;color:#ffd700;font-weight:600;margin-bottom:8px}
.news-card h4{font-size:1.1rem;margin-bottom:8px;transition:color .3s}
.news-card:hover h4{color:#ffd700}
.news-card p{color:#666;font-size:.9rem}
.dark .news-card p{color:#aaa}
.news-card .read-more{color:#ffd700;font-weight:600;font-size:.9rem;display:inline-block;margin-top:10px}

/* faq */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border-bottom:1px solid rgba(0,0,0,.08);padding:18px 0;cursor:pointer}
.dark .faq-item{border-color:rgba(255,255,255,.08)}
.faq-question{display:flex;justify-content:space-between;align-items:center;font-weight:600;font-size:1.05rem;padding:5px 0}
.faq-question .arrow{transition:transform .3s;font-size:.9rem;color:#ffd700}
.faq-item.active .faq-question .arrow{transform:rotate(180deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,opacity .3s;opacity:0;color:#555;font-size:.95rem;line-height:1.7}
.dark .faq-answer{color:#bbb}
.faq-item.active .faq-answer{max-height:300px;opacity:1;padding:10px 0 5px}

/* howto */
.howto-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:25px}
.howto-step{text-align:center;padding:25px 15px;position:relative}
.howto-step .step-num{width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#ffd700,#ffaa00);display:flex;align-items:center;justify-content:center;font-size:1.3rem;font-weight:700;color:#1a1a2e;margin:0 auto 15px}
.howto-step h4{font-size:1.1rem;margin-bottom:8px}
.howto-step p{color:#666;font-size:.9rem}
.dark .howto-step p{color:#aaa}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr}}
.contact-info h3{font-size:1.5rem;margin-bottom:20px}
.contact-info p{margin-bottom:12px;display:flex;align-items:center;gap:10px;color:#555}
.dark .contact-info p{color:#bbb}
.contact-info .c-icon{color:#ffd700;font-size:1.2rem}
.contact-form .form-group{margin-bottom:15px}
.contact-form input,.contact-form textarea{width:100%;padding:12px 16px;border:2px solid rgba(0,0,0,.08);border-radius:12px;font-size:1rem;background:#fff;transition:border .3s;font-family:inherit}
.dark .contact-form input,.dark .contact-form textarea{background:rgba(255,255,255,.05);border-color:rgba(255,255,255,.1);color:#fff}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:#ffd700}
.contact-form textarea{min-height:120px;resize:vertical}

/* footer */
.footer{background:#1a1a2e;color:rgba(255,255,255,.7);padding:60px 0 30px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:30px;margin-bottom:40px}
.footer h4{color:#ffd700;font-size:1.05rem;margin-bottom:15px}
.footer a{display:block;padding:4px 0;color:rgba(255,255,255,.6);transition:color .3s;font-size:.9rem}
.footer a:hover{color:#ffd700}
.footer .copyright{text-align:center;border-top:1px solid rgba(255,255,255,.1);padding-top:25px;font-size:.88rem;color:rgba(255,255,255,.5)}
.footer .copyright a{display:inline;color:#ffd700;padding:0}

/* back to top */
.back-top{position:fixed;bottom:30px;right:30px;width:50px;height:50px;border-radius:50%;background:linear-gradient(135deg,#ffd700,#ffaa00);color:#1a1a2e;border:none;font-size:1.3rem;cursor:pointer;box-shadow:0 4px 15px rgba(255,215,0,.3);opacity:0;visibility:hidden;transform:translateY(20px);transition:all .4s;z-index:999;display:flex;align-items:center;justify-content:center}
.back-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(255,215,0,.4)}

/* search overlay */
.search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.85);backdrop-filter:blur(10px);z-index:2000;display:none;align-items:center;justify-content:center;padding:20px}
.search-overlay.active{display:flex}
.search-box{width:100%;max-width:600px;background:#fff;border-radius:20px;padding:30px;text-align:center}
.dark .search-box{background:#1a1a2e}
.search-box input{width:100%;padding:14px 20px;border:2px solid #ffd700;border-radius:50px;font-size:1.1rem;outline:none;background:transparent;color:inherit}
.search-box .close-search{display:inline-block;margin-top:15px;padding:8px 20px;border-radius:50px;background:rgba(255,215,0,.15);color:#ffd700;border:none;cursor:pointer;font-weight:600}

/* breadcrumb */
.breadcrumb{background:rgba(255,255,255,.03);padding:12px 0;font-size:.88rem;color:#888}
.dark .breadcrumb{color:#999}
.breadcrumb a{color:#ffd700}
.breadcrumb span{margin:0 6px}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.reveal.visible{opacity:1;transform:translateY(0)}

/* dark mode */
.dark .hero{background:linear-gradient(135deg,#0a0a1a,#0f0f2a,#0a1a3a)}
.dark .card{background:rgba(30,30,50,.7)}
.dark .contact-form input,.dark .contact-form textarea{background:rgba(255,255,255,.05);color:#fff}

/* responsive extras */
@media(max-width:576px){.hero h1{font-size:1.7rem}.hero-stats{flex-direction:column;gap:15px}.data-grid{grid-template-columns:1fr 1fr}.partners-grid{grid-template-columns:repeat(3,1fr)}}

/* accessibility */
:focus-visible{outline:3px solid #ffd700;outline-offset:2px}
.skip-link{position:absolute;top:-100%;left:0;background:#ffd700;color:#1a1a2e;padding:8px 16px;z-index:10000;font-weight:600}
.skip-link:focus{top:0}