:root{--bg:#0a0e17;--bg-alt:#0d1524;--bg-card:#101a2e;--text:#e8eefc;--text-muted:#9fb3d1;--accent:#1a6dff;--accent-2:#2b8cff;--accent-3:#7b5cff;--border:rgba(255,255,255,.09);--glass:rgba(16,26,46,.55);--shadow:0 18px 50px rgba(0,0,0,.45);--radius:18px;--radius-sm:12px;--maxw:1180px;--header-h:72px}
:root[data-theme="light"]{--bg:#f4f7fc;--bg-alt:#eaf0fa;--bg-card:#ffffff;--text:#12203a;--text-muted:#51617d;--border:rgba(18,32,58,.1);--glass:rgba(255,255,255,.6);--shadow:0 18px 44px rgba(24,48,90,.14)}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,system-ui,sans-serif;font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);background-image:radial-gradient(1200px 600px at 85% -10%,rgba(43,140,255,.22),transparent 60%),radial-gradient(900px 500px at 0% 0%,rgba(123,92,255,.18),transparent 55%);background-attachment:fixed;transition:background-color .35s ease,color .35s ease;overflow-x:hidden}
img,svg{max-width:100%;display:block}
a{color:var(--accent-2);text-decoration:none;transition:color .25s ease,opacity .25s ease}
a:hover,a:focus-visible{color:var(--accent)}
h1,h2,h3,h4{line-height:1.3;margin:0 0 .6em;font-weight:800;letter-spacing:.2px}
h1{font-size:clamp(1.7rem,4.2vw,2.9rem)}
h2{font-size:clamp(1.4rem,3vw,2.05rem)}
h3{font-size:clamp(1.12rem,2.2vw,1.4rem)}
h4{font-size:1.02rem;color:var(--text-muted)}
p{margin:0 0 1em}
ul,ol{margin:0 0 1.2em;padding-left:1.35em}
li{margin:.35em 0}
blockquote{margin:1em 0;padding:1em 1.2em;border-left:4px solid var(--accent);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
blockquote p{margin:0;color:var(--text)}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
:focus-visible{outline:2px solid var(--accent-2);outline-offset:3px;border-radius:6px}
#site-header{position:sticky;top:0;z-index:100;background:var(--glass);backdrop-filter:blur(16px) saturate(160%);-webkit-backdrop-filter:blur(16px) saturate(160%);border-bottom:1px solid var(--border);transition:background-color .35s ease}
.header-inner{max-width:var(--maxw);margin:0 auto;padding:0 20px;min-height:var(--header-h);display:flex;align-items:center;gap:20px;flex-wrap:wrap}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);font-weight:800;font-size:1.12rem;letter-spacing:.5px}
.logo svg{border-radius:10px;box-shadow:0 6px 18px rgba(26,109,255,.45);transition:transform .3s ease}
.logo:hover svg{transform:rotate(-6deg) scale(1.05)}
#main-nav{flex:1;min-width:0}
#main-nav ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px}
#main-nav a{display:block;padding:8px 12px;border-radius:999px;color:var(--text-muted);font-size:.94rem;font-weight:600;transition:color .25s,background-color .25s,transform .25s}
#main-nav a:hover{color:var(--text);background:rgba(43,140,255,.16);transform:translateY(-2px)}
.header-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
#site-search{display:flex;align-items:center;gap:6px;background:rgba(127,155,200,.12);border:1px solid var(--border);border-radius:999px;padding:4px 4px 4px 14px;transition:border-color .25s,box-shadow .25s}
#site-search:focus-within{border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(43,140,255,.22)}
#search-input{background:transparent;border:0;color:var(--text);font-size:.9rem;padding:6px 0;width:170px;min-width:0;outline:none}
#search-input::placeholder{color:var(--text-muted)}
#site-search button{border:0;cursor:pointer;padding:7px 15px;border-radius:999px;background:linear-gradient(135deg,var(--accent),var(--accent-3));color:#fff;font-size:.86rem;font-weight:700;transition:transform .25s,filter .25s}
#site-search button:hover{transform:translateY(-1px);filter:brightness(1.12)}
#theme-toggle,#menu-toggle{cursor:pointer;border:1px solid var(--border);background:rgba(127,155,200,.12);color:var(--text);font-size:.86rem;font-weight:700;padding:8px 14px;border-radius:999px;transition:background-color .25s,transform .25s,border-color .25s}
#theme-toggle:hover,#menu-toggle:hover{background:rgba(43,140,255,.2);border-color:var(--accent-2);transform:translateY(-1px)}
#menu-toggle{display:none}
#hero{position:relative;padding:clamp(40px,7vw,84px) 0 clamp(30px,5vw,60px);overflow:hidden}
#hero::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(26,109,255,.32),rgba(123,92,255,.22) 45%,rgba(10,14,23,0) 78%);pointer-events:none}
.hero-inner{position:relative;max-width:var(--maxw);margin:0 auto;padding:0 20px}
#hero-title{max-width:22em;background:linear-gradient(100deg,var(--text) 20%,var(--accent-2) 60%,var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{max-width:60ch;color:var(--text-muted);font-size:clamp(.98rem,1.6vw,1.08rem)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 34px}
.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:13px 28px;border-radius:999px;font-weight:800;font-size:.98rem;transition:transform .28s cubic-bezier(.2,.8,.3,1),box-shadow .28s,filter .28s;will-change:transform}
.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent-3));color:#fff;box-shadow:0 12px 30px rgba(26,109,255,.42)}
.btn-primary:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 18px 40px rgba(26,109,255,.55);filter:brightness(1.08);color:#fff}
.btn-secondary{background:var(--glass);color:var(--text);border:1px solid var(--border);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
.btn-secondary:hover{transform:translateY(-3px);border-color:var(--accent-2);color:var(--accent-2)}
.hero-carousel{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);background:var(--bg-card);box-shadow:var(--shadow)}
.slide{display:none;margin:0;position:relative}
.slide.active{display:block;animation:fadeSlide .6s ease both}
.slide svg{width:100%;height:auto}
.slide figcaption{padding:14px 20px;font-size:.92rem;color:var(--text-muted);border-top:1px solid var(--border);background:var(--glass);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
@keyframes fadeSlide{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.stat{background:var(--glass);border:1px solid var(--border);border-radius:var(--radius);padding:18px 16px;text-align:center;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.stat:hover{transform:translateY(-5px);border-color:var(--accent-2);box-shadow:0 16px 36px rgba(26,109,255,.25)}
.stat .num{display:block;font-size:clamp(1.5rem,3.4vw,2.1rem);font-weight:900;background:linear-gradient(135deg,var(--accent-2),var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span:last-child{font-size:.86rem;color:var(--text-muted)}
#breadcrumb{max-width:var(--maxw);margin:0 auto;padding:6px 20px 0;font-size:.86rem;color:var(--text-muted)}
#breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
#breadcrumb li+li::before{content:"/";margin-right:6px;color:var(--text-muted);opacity:.6}
#breadcrumb a{color:var(--text-muted)}
#breadcrumb a:hover{color:var(--accent-2)}
main>section{max-width:var(--maxw);margin:0 auto;padding:clamp(34px,5vw,60px) 20px}
main>section+section{border-top:1px solid var(--border)}
#intro,#products,#solutions,#cases,#news,#knowledge,#faq,#howto,#contact,#sitemap,#links,#legal{position:relative}
#products h3,#solutions h3,#cases h3,#knowledge h3,#howto h3,#contact h3,#legal h3{margin-top:1.6em}
#products h3:first-of-type,#solutions h3:first-of-type,#knowledge h3:first-of-type,#howto h3:first-of-type,#contact h3:first-of-type,#legal h3:first-of-type{margin-top:.4em}
#products ul,#howto ul,#howto ol,#contact ul,#sitemap ul,#links ul{list-style:none;padding:0;display:grid;gap:10px}
#products ul li,#howto ul li,#contact ul li,#sitemap ul li,#links ul li{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px;transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
#products ul li:hover,#howto ul li:hover,#contact ul li:hover,#sitemap ul li:hover,#links ul li:hover{transform:translateX(5px);border-color:var(--accent-2);box-shadow:0 10px 24px rgba(26,109,255,.16)}
#howto ol{counter-reset:step;list-style:none}
#howto ol li{counter-increment:step;position:relative;padding-left:52px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding-top:12px;padding-bottom:12px;padding-right:16px;transition:transform .28s ease,border-color .28s ease,box-shadow .28s ease}
#howto ol li::before{content:counter(step);position:absolute;left:14px;top:50%;transform:translateY(-50%);width:26px;height:26px;border-radius:50%;display:grid;place-items:center;font-size:.82rem;font-weight:800;color:#fff;background:linear-gradient(135deg,var(--accent),var(--accent-3))}
#howto ol li:hover{transform:translateX(5px);border-color:var(--accent-2);box-shadow:0 10px 24px rgba(26,109,255,.16)}
#intro ul{list-style:none;padding:0;display:grid;gap:10px;margin:0 0 1.2em}
#intro ul li{position:relative;padding:12px 16px 12px 42px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);transition:transform .28s ease,border-color .28s ease}
#intro ul li::before{content:"";position:absolute;left:16px;top:50%;width:10px;height:10px;margin-top:-5px;border-radius:50%;background:linear-gradient(135deg,var(--accent-2),var(--accent-3));box-shadow:0 0 0 4px rgba(43,140,255,.16)}
#intro ul li:hover{transform:translateX(5px);border-color:var(--accent-2)}
#cases blockquote{transition:transform .3s ease,box-shadow .3s ease}
#cases blockquote:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(26,109,255,.2)}
#news{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
#news>h2,#news>p{grid-column:1/-1}
#news article{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:4px;transition:transform .32s cubic-bezier(.2,.8,.3,1),box-shadow .32s,border-color .32s;position:relative;overflow:hidden}
#news article::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(43,140,255,.14),transparent 55%);opacity:0;transition:opacity .32s ease;pointer-events:none}
#news article:hover{transform:translateY(-6px);border-color:var(--accent-2);box-shadow:0 22px 46px rgba(26,109,255,.22)}
#news article:hover::after{opacity:1}
#news article h3{font-size:1.08rem;margin-bottom:.4em}
#news article p{margin:0 0 .5em;font-size:.92rem;color:var(--text-muted)}
#news article p:first-of-type{font-size:.82rem;letter-spacing:.4px;color:var(--accent-2);font-weight:700}
#news article a{margin-top:auto;font-weight:800;font-size:.9rem;display:inline-flex;align-items:center;gap:6px}
#news article a::after{content:"→";transition:transform .25s ease}
#news article a:hover::after{transform:translateX(4px)}
#faq details{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);padding:0 18px;margin-bottom:12px;transition:border-color .28s ease,box-shadow .28s ease,background-color .28s ease}
#faq details:hover{border-color:var(--accent-2)}
#faq details[open]{border-color:var(--accent-2);box-shadow:0 12px 30px rgba(26,109,255,.16);background:var(--bg-alt)}
#faq summary{cursor:pointer;list-style:none;font-weight:700;padding:16px 0;position:relative;padding-right:34px;transition:color .25s ease}
#faq summary::-webkit-details-marker{display:none}
#faq summary::after{content:"+";position:absolute;right:0;top:50%;transform:translateY(-50%);width:24px;height:24px;display:grid;place-items:center;border-radius:50%;background:rgba(43,140,255,.18);color:var(--accent-2);font-weight:800;transition:transform .3s ease,background-color .3s ease}
#faq details[open] summary::after{content:"−";transform:translateY(-50%) rotate(180deg);background:linear-gradient(135deg,var(--accent),var(--accent-3));color:#fff}
#faq details p{padding-bottom:16px;margin:0;color:var(--text-muted);animation:fadeSlide .35s ease both}
#contact ul li strong{color:var(--text)}
#sitemap ul,#links ul{grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}
#links ul li a{font-weight:700}
#legal p:last-child{color:var(--text-muted);font-size:.86rem}
#site-footer{background:var(--bg-alt);border-top:1px solid var(--border);text-align:center;padding:36px 20px;color:var(--text-muted);font-size:.9rem}
#site-footer p{margin:.3em 0}
#site-footer a{font-weight:700}
#back-to-top{position:fixed;right:22px;bottom:22px;z-index:90;width:48px;height:48px;border-radius:50%;border:1px solid var(--border);cursor:pointer;background:linear-gradient(135deg,var(--accent),var(--accent-3));color:#fff;font-size:1.2rem;font-weight:800;box-shadow:0 12px 28px rgba(26,109,255,.45);opacity:0;visibility:hidden;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease,visibility .3s,filter .25s}
#back-to-top.show{opacity:1;visibility:visible;transform:none}
#back-to-top:hover{filter:brightness(1.15);transform:translateY(-3px)}
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.8,.3,1),transform .7s cubic-bezier(.2,.8,.3,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}.reveal{opacity:1;transform:none}}
@media (max-width:1024px){#main-nav ul{gap:2px}#main-nav a{padding:7px 9px;font-size:.88rem}#search-input{width:130px}}
@media (max-width:860px){.header-inner{gap:12px;padding:10px 16px;min-height:auto}#menu-toggle{display:inline-block;order:3}#main-nav{order:4;flex-basis:100%;display:none}#main-nav.open{display:block;animation:fadeSlide .3s ease both}#main-nav ul{flex-direction:column;gap:4px;padding:8px 0 4px}#main-nav a{padding:11px 14px;border-radius:12px;font-size:.95rem;background:rgba(127,155,200,.08)}.header-tools{order:2;margin-left:auto}#site-search{order:-1;flex:1 1 100%}#search-input{width:100%}.hero-stats{grid-template-columns:repeat(3,1fr);gap:10px}.stat{padding:14px 8px}#news{grid-template-columns:1fr}}
@media (max-width:560px){body{font-size:15px}#hero{padding-top:30px}.hero-actions{gap:10px}.btn-primary,.btn-secondary{flex:1 1 100%;padding:12px 20px}.hero-stats{grid-template-columns:1fr}.stat{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px 14px}.stat .num{font-size:1.4rem}#site-search button{padding:7px 12px}.logo-text{font-size:1rem}#back-to-top{right:14px;bottom:14px;width:44px;height:44px}main>section{padding-left:16px;padding-right:16px}#breadcrumb{padding-left:16px;padding-right:16px}}
@media (min-width:1200px){#news{grid-template-columns:repeat(3,1fr)}}