*{margin:0;padding:0;box-sizing:border-box}
:root{--brand:#1a73e8;--brand-dark:#0d47a1;--brand-light:#e8f0fe;--text:#1f2329;--text-sub:#5f6368;--bg:#ffffff;--bg-soft:#f6f8fb;--border:#e3e8ef;--accent:#ff6b35;--accent-dark:#e85a2a;--radius:12px;--radius-lg:20px;--shadow:0 4px 20px rgba(26,115,232,.08);--shadow-lg:0 12px 40px rgba(26,115,232,.14);--glass:rgba(255,255,255,.72);--glass-border:rgba(255,255,255,.5)}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.8;font-size:16px;overflow-x:hidden;transition:background .35s ease,color .35s ease}
img,svg{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--brand-dark)}
ul,ol{list-style:none}
button{font-family:inherit}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:9999;border-radius:0 0 8px 0}
.skip-link:focus{left:0}

header.site-header{position:sticky;top:0;z-index:1000;background:var(--glass);backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid var(--border);transition:background .35s ease,border-color .35s ease}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--brand-dark);white-space:nowrap;transition:transform .3s ease}
.logo:hover{transform:scale(1.03)}
.logo svg{width:36px;height:36px;flex-shrink:0;transition:transform .5s ease}
.logo:hover svg{transform:rotate(-8deg) scale(1.08)}
.nav-main{display:flex;gap:4px;flex-wrap:wrap}
.nav-main a{padding:8px 14px;border-radius:10px;color:var(--text-sub);font-size:15px;font-weight:500;position:relative;transition:background .25s ease,color .25s ease,transform .25s ease}
.nav-main a:hover{background:var(--brand-light);color:var(--brand);transform:translateY(-2px)}
.header-tools{display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;background:var(--bg-soft);border:1px solid var(--border);border-radius:20px;padding:6px 14px;gap:6px;transition:border-color .25s ease,box-shadow .25s ease,background .35s ease}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(26,115,232,.14)}
.search-box input{border:none;background:transparent;outline:none;font-size:14px;width:140px;color:var(--text);transition:width .3s ease}
.search-box input:focus{width:180px}
.search-box input::placeholder{color:var(--text-sub)}
.search-box button{border:none;background:transparent;cursor:pointer;color:var(--brand);font-size:14px;font-weight:600;padding:2px 4px;border-radius:6px;transition:background .2s ease}
.search-box button:hover{background:var(--brand-light)}
.theme-toggle{width:38px;height:38px;border-radius:50%;border:1px solid var(--border);background:var(--bg-soft);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:16px;transition:transform .35s ease,background .35s ease,border-color .35s ease}
.theme-toggle:hover{transform:rotate(25deg) scale(1.08);background:var(--brand-light)}
.menu-toggle{display:none;width:38px;height:38px;border-radius:10px;border:1px solid var(--border);background:var(--bg-soft);cursor:pointer;font-size:18px;color:var(--text);transition:background .25s ease}
.menu-toggle:hover{background:var(--brand-light)}

main{display:block}
section{padding:56px 0}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:30px;color:var(--text);margin-bottom:12px;position:relative;display:inline-block;padding-bottom:14px;line-height:1.4}
.section-head h2::after{content:"";position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:56px;height:4px;background:linear-gradient(90deg,var(--brand),var(--accent));border-radius:2px}
.section-head p{color:var(--text-sub);max-width:720px;margin:0 auto;font-size:15px}

.breadcrumb{background:var(--bg-soft);padding:14px 0;font-size:14px;color:var(--text-sub);transition:background .35s ease}
.breadcrumb ol{display:flex;gap:8px;flex-wrap:wrap;max-width:1180px;margin:0 auto;padding:0 20px}
.breadcrumb li::after{content:"›";margin-left:8px;color:var(--text-sub)}
.breadcrumb li:last-child::after{content:""}
.breadcrumb a{color:var(--text-sub)}
.breadcrumb a:hover{color:var(--brand)}

.hero{position:relative;background:linear-gradient(135deg,#e8f0fe 0%,#f0f6ff 35%,#f6f8fb 70%,#fff3ec 100%);padding:64px 0;overflow:hidden}
.hero::before{content:"";position:absolute;top:-120px;right:-100px;width:420px;height:420px;background:radial-gradient(circle,rgba(26,115,232,.18),transparent 70%);border-radius:50%;pointer-events:none}
.hero::after{content:"";position:absolute;bottom:-140px;left:-80px;width:380px;height:380px;background:radial-gradient(circle,rgba(255,107,53,.14),transparent 70%);border-radius:50%;pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:40px;line-height:1.3;color:var(--brand-dark);margin-bottom:18px;letter-spacing:-.5px}
.hero h1 .hl{background:linear-gradient(120deg,var(--accent),#ff8c5a);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:var(--accent)}
.hero .lead{font-size:17px;color:var(--text-sub);margin-bottom:24px;line-height:1.9}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 26px;border-radius:24px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease;text-align:center}
.btn-primary{background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;box-shadow:0 6px 18px rgba(26,115,232,.3)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(26,115,232,.42);color:#fff}
.btn-ghost{background:var(--glass);color:var(--brand);border:1px solid var(--brand);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-3px);box-shadow:0 8px 20px rgba(26,115,232,.16)}
.hero-stats{display:flex;gap:32px;margin-top:32px;flex-wrap:wrap}
.hero-stats .stat b{display:block;font-size:28px;color:var(--brand);font-weight:800;line-height:1.2}
.hero-stats .stat span{font-size:13px;color:var(--text-sub)}
.hero-visual{background:var(--glass);border:1px solid var(--glass-border);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-lg);backdrop-filter:blur(14px) saturate(160%);-webkit-backdrop-filter:blur(14px) saturate(160%);transition:transform .4s ease,box-shadow .4s ease}
.hero-visual:hover{transform:translateY(-6px);box-shadow:0 20px 50px rgba(26,115,232,.2)}

.carousel{position:relative;overflow:hidden;border-radius:var(--radius)}
.carousel-track{display:flex;transition:transform .55s cubic-bezier(.4,0,.2,1)}
.carousel-slide{min-width:100%;padding:20px;text-align:center}
.carousel-slide svg{border-radius:12px;transition:transform .4s ease}
.carousel-slide:hover svg{transform:scale(1.03)}
.carousel-slide h3{font-size:18px;color:var(--brand-dark);margin:14px 0 8px}
.carousel-slide p{font-size:14px;color:var(--text-sub)}
.carousel-dots{display:flex;justify-content:center;gap:8px;margin-top:12px}
.carousel-dots button{width:10px;height:10px;border-radius:50%;border:none;background:#c9d6e8;cursor:pointer;padding:0;transition:width .3s ease,background .3s ease}
.carousel-dots button.active{background:var(--brand);width:24px;border-radius:5px}
.carousel-dots button:hover{background:var(--brand)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}
.card{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(26,115,232,.32)}
.card .icon{width:48px;height:48px;border-radius:12px;background:var(--brand-light);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:22px;transition:transform .35s ease,background .35s ease}
.card:hover .icon{transform:scale(1.1) rotate(-6deg);background:linear-gradient(135deg,var(--brand-light),#fff3ec)}
.card h3{font-size:18px;margin-bottom:10px;color:var(--text)}
.card p{font-size:14px;color:var(--text-sub);line-height:1.8}

.article-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px}
.article-card{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;display:flex;flex-direction:column;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.article-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(26,115,232,.32)}
.article-card .thumb{background:linear-gradient(135deg,var(--brand-light),#f0f4ff);padding:24px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.article-card .thumb svg{transition:transform .45s ease}
.article-card:hover .thumb svg{transform:scale(1.06)}
.article-card .body{padding:22px;flex:1;display:flex;flex-direction:column}
.article-card h3{font-size:17px;margin-bottom:10px;line-height:1.5}
.article-card h3 a{color:var(--text)}
.article-card h3 a:hover{color:var(--brand)}
.article-card .meta{font-size:13px;color:var(--text-sub);margin-bottom:10px;display:flex;gap:14px;flex-wrap:wrap}
.article-card p{font-size:14px;color:var(--text-sub);flex:1;margin-bottom:14px}
.article-card .read-more{font-size:14px;font-weight:600;color:var(--brand);transition:transform .25s ease}
.article-card .read-more:hover{transform:translateX(4px)}

.faq-list{max-width:900px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;background:var(--glass);overflow:hidden;transition:border-color .3s ease,box-shadow .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.faq-item:hover{border-color:rgba(26,115,232,.32)}
.faq-item.open{border-color:var(--brand);box-shadow:var(--shadow)}
.faq-q{width:100%;text-align:left;padding:18px 22px;background:none;border:none;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .25s ease}
.faq-q:hover{color:var(--brand)}
.faq-q .arrow{transition:transform .35s ease;color:var(--brand);flex-shrink:0}
.faq-item.open .faq-q .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .35s ease;padding:0 22px;color:var(--text-sub);font-size:15px}
.faq-item.open .faq-a{padding:0 22px 20px;max-height:600px}

.howto-steps{counter-reset:step;max-width:900px;margin:0 auto}
.step-item{position:relative;padding:0 0 28px 64px;border-left:2px solid var(--border);margin-left:20px;transition:border-color .3s ease}
.step-item:hover{border-left-color:var(--brand)}
.step-item:last-child{border-left-color:transparent;padding-bottom:0}
.step-item::before{counter-increment:step;content:counter(step);position:absolute;left:-21px;top:0;width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;transition:transform .35s ease,box-shadow .35s ease}
.step-item:hover::before{transform:scale(1.12);box-shadow:0 6px 16px rgba(26,115,232,.4)}
.step-item h4{font-size:17px;margin-bottom:8px;color:var(--text)}
.step-item p{font-size:14px;color:var(--text-sub)}

.case-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.case-card{background:var(--glass);border-radius:var(--radius);padding:26px;border-left:4px solid var(--brand);transition:transform .3s ease,box-shadow .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.case-card h3{font-size:17px;margin-bottom:10px;color:var(--brand-dark)}
.case-card p{font-size:14px;color:var(--text-sub);margin-bottom:12px}
.case-card .tag{display:inline-block;font-size:12px;background:var(--brand-light);color:var(--brand);padding:3px 10px;border-radius:10px;margin-right:6px;transition:background .25s ease,color .25s ease}
.case-card:hover .tag{background:var(--brand);color:#fff}

.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.testimonial{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);padding:26px;position:relative;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.testimonial:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(26,115,232,.32)}
.testimonial::before{content:"\201C";font-size:56px;color:var(--brand-light);position:absolute;top:6px;left:18px;line-height:1;font-family:Georgia,serif}
.testimonial p{font-size:14px;color:var(--text-sub);margin-bottom:16px;position:relative;z-index:1}
.testimonial .who{font-size:13px;color:var(--text);font-weight:600}
.testimonial .who span{display:block;font-weight:400;color:var(--text-sub);font-size:12px;margin-top:2px}

.news-list{max-width:900px;margin:0 auto}
.news-item{display:flex;gap:18px;padding:18px 0;border-bottom:1px solid var(--border);align-items:flex-start;transition:transform .3s ease}
.news-item:hover{transform:translateX(6px)}
.news-item:last-child{border-bottom:none}
.news-date{flex-shrink:0;width:76px;text-align:center;background:var(--brand-light);border-radius:10px;padding:8px 4px;transition:background .3s ease,transform .3s ease}
.news-item:hover .news-date{background:linear-gradient(135deg,var(--brand),var(--brand-dark));transform:scale(1.05)}
.news-item:hover .news-date b,.news-item:hover .news-date span{color:#fff}
.news-date b{display:block;font-size:20px;color:var(--brand);line-height:1.2;transition:color .3s ease}
.news-date span{font-size:12px;color:var(--text-sub);transition:color .3s ease}
.news-body h3{font-size:16px;margin-bottom:6px}
.news-body h3 a{color:var(--text)}
.news-body h3 a:hover{color:var(--brand)}
.news-body p{font-size:14px;color:var(--text-sub)}

.info-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:24px}
.info-block{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.info-block:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(26,115,232,.32)}
.info-block h3{font-size:16px;margin-bottom:12px;color:var(--brand-dark)}
.info-block li{font-size:14px;color:var(--text-sub);padding:5px 0;display:flex;gap:8px}
.info-block li b{color:var(--text);font-weight:600;flex-shrink:0}

.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag-cloud a{background:var(--glass);border:1px solid var(--border);border-radius:16px;padding:6px 16px;font-size:14px;color:var(--text-sub);transition:background .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.tag-cloud a:hover{background:var(--brand-light);color:var(--brand);border-color:var(--brand);transform:translateY(-3px)}

.sitemap-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:28px}
.sitemap-cols h4{font-size:15px;margin-bottom:12px;color:var(--brand-dark)}
.sitemap-cols li{padding:4px 0}
.sitemap-cols a{font-size:14px;color:var(--text-sub);transition:color .25s ease,padding-left .25s ease}
.sitemap-cols a:hover{color:var(--brand);padding-left:4px}

.author-box{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);padding:26px;display:flex;gap:20px;align-items:flex-start;max-width:900px;margin:0 auto;transition:box-shadow .3s ease,background .35s ease;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.author-box:hover{box-shadow:var(--shadow-lg)}
.author-avatar{width:64px;height:64px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--accent));display:flex;align-items:center;justify-content:center;color:#fff;font-size:24px;font-weight:700;flex-shrink:0;transition:transform .4s ease}
.author-box:hover .author-avatar{transform:scale(1.08) rotate(6deg)}
.author-box h3{font-size:16px;margin-bottom:6px}
.author-box p{font-size:14px;color:var(--text-sub)}

footer.site-footer{background:#0f1729;color:#aab4c8;padding:56px 0 0;margin-top:20px;transition:background .35s ease}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-grid p,.footer-grid li{font-size:13.5px;line-height:1.9;color:#aab4c8}
.footer-grid a{color:#aab4c8;transition:color .25s ease,padding-left .25s ease}
.footer-grid a:hover{color:#fff;padding-left:3px}
.footer-bottom{padding:22px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#7c8aa5}
.footer-bottom a{color:#7c8aa5}
.footer-bottom a:hover{color:#fff}

.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand-dark));color:#fff;border:none;cursor:pointer;font-size:18px;box-shadow:0 6px 18px rgba(26,115,232,.4);opacity:0;visibility:hidden;transition:opacity .35s ease,visibility .35s ease,transform .35s ease;z-index:900}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 12px 28px rgba(26,115,232,.5)}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s cubic-bezier(.4,0,.2,1),transform .7s cubic-bezier(.4,0,.2,1)}
.reveal.visible{opacity:1;transform:none}

body.dark{--text:#e6eaf2;--text-sub:#9aa6bd;--bg:#0f1420;--bg-soft:#161d2e;--border:#26304a;--brand-light:#1a2740;--shadow:0 4px 20px rgba(0,0,0,.4);--shadow-lg:0 12px 40px rgba(0,0,0,.55);--glass:rgba(22,29,46,.72);--glass-border:rgba(38,48,74,.6)}
body.dark header.site-header{background:rgba(15,20,32,.78)}
body.dark .hero{background:linear-gradient(135deg,#131b2c 0%,#101828 50%,#0f1420 100%)}
body.dark .hero::before{background:radial-gradient(circle,rgba(26,115,232,.24),transparent 70%)}
body.dark .hero::after{background:radial-gradient(circle,rgba(255,107,53,.18),transparent 70%)}
body.dark .hero h1{color:#cfe0ff}
body.dark .carousel-slide h3{color:#cfe0ff}
body.dark .card,body.dark .article-card,body.dark .faq-item,body.dark .testimonial,body.dark .info-block,body.dark .author-box,body.dark .case-card{background:var(--glass)}
body.dark .card:hover,body.dark .article-card:hover,body.dark .testimonial:hover,body.dark .info-block:hover,body.dark .case-card:hover{border-color:rgba(26,115,232,.5)}
body.dark .article-card .thumb{background:linear-gradient(135deg,#1a2740,#131b2c)}
body.dark .btn-ghost{background:rgba(22,29,46,.72);color:#7fb0ff;border-color:#2a4a7a}
body.dark .btn-ghost:hover{background:#1a2740}
body.dark .news-date{background:#1a2740}
body.dark .news-date b{color:#7fb0ff}
body.dark .carousel-dots button{background:#2e3a55}
body.dark .carousel-dots button.active{background:var(--brand)}
body.dark footer.site-footer{background:#0a0e18}
body.dark .skip-link{background:#1a2740}
body.dark .search-box input::placeholder{color:#6b7a99}
body.dark .hero h1 .hl{background:linear-gradient(120deg,#ff8c5a,#ff6b35);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}

@media(max-width:960px){
.hero-grid{grid-template-columns:1fr;gap:32px}
.hero h1{font-size:30px}
.hero{padding:48px 0}
.section-head h2{font-size:26px}
.footer-grid{grid-template-columns:1fr 1fr;gap:28px}
.nav-main{display:none}
.menu-toggle{display:flex;align-items:center;justify-content:center}
.nav-main.open{display:flex;position:absolute;top:68px;left:0;right:0;background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);flex-direction:column;padding:16px 20px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-lg);animation:slideDown .3s ease}
@keyframes slideDown{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:none}}
.search-box input{width:100px}
.search-box input:focus{width:130px}
}

@media(max-width:560px){
.hero h1{font-size:25px}
.hero .lead{font-size:15px}
.section-head h2{font-size:23px}
.section-head p{font-size:14px}
section{padding:44px 0}
.hero-stats{gap:20px}
.hero-stats .stat b{font-size:23px}
.footer-grid{grid-template-columns:1fr;gap:24px}
.search-box{display:none}
.news-item{flex-direction:column;gap:10px}
.author-box{flex-direction:column;text-align:center;align-items:center}
.hero-actions{flex-direction:column}
.btn{width:100%}
.card{padding:22px}
.container{padding:0 16px}
.back-top{right:16px;bottom:16px;width:42px;height:42px}
}

@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
.reveal{opacity:1;transform:none}
}