:root{--brand:#e63946;--brand-dark:#a4161a;--brand-soft:#ff6b7a;--bg:#f5f6fa;--bg-soft:#ffffff;--card:#ffffff;--text:#1f2328;--text-soft:#555b63;--muted:#8a9099;--line:#e8eaef;--shadow:0 4px 20px rgba(24,28,40,.07);--shadow-lg:0 14px 40px rgba(24,28,40,.14);--glass:rgba(255,255,255,.72);--glass-line:rgba(255,255,255,.45);--radius:16px;--radius-sm:10px;--radius-lg:24px;--ease:cubic-bezier(.22,.61,.36,1);--grad-1:linear-gradient(135deg,#ff5f6d 0%,#e63946 45%,#a4161a 100%);--grad-2:linear-gradient(135deg,#4facfe 0%,#457b9d 45%,#1d3557 100%);--grad-3:linear-gradient(135deg,#43e97b 0%,#2a9d8f 45%,#264653 100%);--grad-brand:linear-gradient(120deg,#e63946,#ff6b7a 50%,#ffb3ba);}
body.dark{--bg:#0d0f14;--bg-soft:#14171d;--card:#181c23;--text:#e8eaef;--text-soft:#b8bec8;--muted:#7d8593;--line:#262b34;--shadow:0 4px 20px rgba(0,0,0,.4);--shadow-lg:0 14px 40px rgba(0,0,0,.55);--glass:rgba(24,28,35,.72);--glass-line:rgba(255,255,255,.08);}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:var(--bg);line-height:1.75;font-size:16px;overflow-x:hidden;transition:background .4s var(--ease),color .4s var(--ease);background-image:radial-gradient(circle at 12% 8%,rgba(230,57,70,.06),transparent 42%),radial-gradient(circle at 88% 4%,rgba(69,123,157,.06),transparent 40%);background-attachment:fixed}
body.dark{background-image:radial-gradient(circle at 12% 8%,rgba(230,57,70,.14),transparent 42%),radial-gradient(circle at 88% 4%,rgba(69,123,157,.12),transparent 40%)}
a{color:var(--brand);text-decoration:none;transition:color .25s var(--ease),opacity .25s var(--ease)}
a:hover{color:var(--brand-soft);text-decoration:none}
img,svg{max-width:100%;display:block}
::selection{background:var(--brand);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--brand),var(--brand-dark));border-radius:10px;border:2px solid var(--bg)}
header.site-header{position:sticky;top:0;z-index:100;background:var(--glass);backdrop-filter:blur(18px) saturate(180%);-webkit-backdrop-filter:blur(18px) saturate(180%);border-bottom:1px solid var(--glass-line);box-shadow:0 2px 20px rgba(24,28,40,.06);transition:background .4s var(--ease),box-shadow .4s var(--ease)}
body.dark header.site-header{box-shadow:0 2px 20px rgba(0,0,0,.5)}
.header-inner{max-width:1180px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--brand);letter-spacing:.5px;transition:transform .3s var(--ease)}
.brand:hover{transform:translateY(-2px);color:var(--brand)}
.brand svg{width:38px;height:38px;border-radius:12px;box-shadow:0 6px 18px rgba(230,57,70,.35);transition:transform .5s var(--ease),box-shadow .3s var(--ease)}
.brand:hover svg{transform:rotate(-8deg) scale(1.06);box-shadow:0 10px 26px rgba(230,57,70,.5)}
nav.main-nav ul{list-style:none;display:flex;gap:6px;flex-wrap:wrap}
nav.main-nav a{position:relative;color:var(--text-soft);font-size:15px;font-weight:500;padding:6px 10px;border-radius:8px;transition:color .25s var(--ease),background .25s var(--ease)}
nav.main-nav a::after{content:"";position:absolute;left:10px;right:10px;bottom:2px;height:2px;border-radius:2px;background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
nav.main-nav a:hover{color:var(--brand);background:rgba(230,57,70,.07)}
nav.main-nav a:hover::after{transform:scaleX(1)}
.header-tools{display:flex;align-items:center;gap:10px}
.search-box{display:flex;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--card);transition:border-color .25s var(--ease),box-shadow .25s var(--ease)}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(230,57,70,.12)}
.search-box input{border:none;padding:8px 12px;font-size:14px;outline:none;width:160px;background:transparent;color:var(--text);transition:width .3s var(--ease)}
.search-box input:focus{width:190px}
.search-box input::placeholder{color:var(--muted)}
.search-box button{border:none;background:var(--grad-brand);color:#fff;padding:8px 16px;cursor:pointer;font-size:14px;font-weight:600;transition:filter .25s var(--ease),transform .2s var(--ease)}
.search-box button:hover{filter:brightness(1.08)}
.search-box button:active{transform:scale(.96)}
.theme-toggle{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:8px 12px;cursor:pointer;font-size:15px;color:var(--text);transition:transform .3s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease)}
.theme-toggle:hover{transform:rotate(18deg) scale(1.06);border-color:var(--brand);box-shadow:0 4px 14px rgba(230,57,70,.2)}
.menu-toggle{display:none;border:none;background:none;font-size:24px;cursor:pointer;color:var(--text)}
main{max-width:1180px;margin:0 auto;padding:0 20px}
section{padding:44px 0;border-bottom:1px solid var(--line);scroll-margin-top:80px}
section:last-of-type{border-bottom:none}
h1{font-size:30px;line-height:1.4;margin-bottom:16px;color:var(--text);font-weight:800;letter-spacing:-.3px;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
h2{font-size:24px;margin-bottom:18px;color:var(--text);font-weight:700;position:relative;padding-left:16px;letter-spacing:-.2px}
h2::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:5px;height:24px;border-radius:4px;background:var(--grad-brand);box-shadow:0 0 12px rgba(230,57,70,.5)}
h3{font-size:18px;margin:20px 0 10px;color:var(--text);font-weight:700}
h4{font-size:16px;margin:12px 0 8px;color:var(--text-soft);font-weight:600}
p{margin-bottom:12px;color:var(--text-soft)}
strong{color:var(--text);font-weight:700}
ul,ol{margin:10px 0 16px 22px;color:var(--text-soft)}
li{margin-bottom:8px;position:relative}
li::marker{color:var(--brand)}
.breadcrumb{font-size:14px;color:var(--muted);padding:16px 0}
.breadcrumb a{color:var(--muted);transition:color .25s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.banner{position:relative;overflow:hidden;border-radius:var(--radius-lg);margin:20px 0;background:var(--card);box-shadow:var(--shadow-lg)}
.banner::after{content:"";position:absolute;inset:0;border-radius:var(--radius-lg);border:1px solid var(--glass-line);pointer-events:none}
.slides{display:flex;transition:transform .7s var(--ease)}
.slide{min-width:100%;padding:52px 40px;display:flex;flex-direction:column;justify-content:center;min-height:260px;color:#fff;position:relative;overflow:hidden}
.slide::before{content:"";position:absolute;top:-40%;right:-10%;width:420px;height:420px;border-radius:50%;background:rgba(255,255,255,.12);filter:blur(10px);pointer-events:none}
.slide::after{content:"";position:absolute;bottom:-50%;left:-6%;width:300px;height:300px;border-radius:50%;background:rgba(255,255,255,.08);filter:blur(8px);pointer-events:none}
.slide h2{border:none;color:#fff;padding:0;font-size:28px;margin-bottom:10px;position:relative;z-index:1;text-shadow:0 2px 14px rgba(0,0,0,.22)}
.slide h2::before{display:none}
.slide p{color:rgba(255,255,255,.94);max-width:640px;position:relative;z-index:1;font-size:15.5px;line-height:1.8}
.s1{background:var(--grad-1)}
.s2{background:var(--grad-2)}
.s3{background:var(--grad-3)}
.dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:9px;z-index:2}
.dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;transition:width .35s var(--ease),background .3s var(--ease),transform .3s var(--ease)}
.dots span:hover{transform:scale(1.25);background:rgba(255,255,255,.8)}
.dots span.active{background:#fff;width:26px;border-radius:6px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:20px 0}
.stat{position:relative;background:var(--card);border-radius:var(--radius);padding:26px 20px;text-align:center;box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s var(--ease)}
.stat::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand);transform:scaleX(0);transform-origin:left;transition:transform .45s var(--ease)}
.stat:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.stat:hover::before{transform:scaleX(1)}
.stat .num{font-size:34px;font-weight:800;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-1px;line-height:1.2}
.stat .label{font-size:14px;color:var(--muted);margin-top:8px;font-weight:500}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.card{position:relative;background:var(--card);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--line);transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s var(--ease)}
.card::after{content:"";position:absolute;inset:0;border-radius:var(--radius);padding:1px;background:var(--grad-brand);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:opacity .4s var(--ease);pointer-events:none}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card:hover::after{opacity:.6}
.card h3{margin-top:0}
.card ul{margin-left:18px}
.article-item{position:relative;background:var(--card);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);border:1px solid var(--line);margin-bottom:16px;overflow:hidden;transition:transform .4s var(--ease),box-shadow .4s var(--ease),border-color .3s var(--ease)}
.article-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--grad-brand);transform:scaleY(0);transform-origin:top;transition:transform .4s var(--ease)}
.article-item:hover{transform:translateX(6px);box-shadow:var(--shadow-lg)}
.article-item:hover::before{transform:scaleY(1)}
.article-item h3{margin:0 0 8px;font-size:18px;transition:color .25s var(--ease)}
.article-item:hover h3{color:var(--brand)}
.meta{font-size:13px;color:var(--muted);margin-bottom:10px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.read-more{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:4px;transition:gap .3s var(--ease),color .25s var(--ease)}
.read-more:hover{gap:10px;color:var(--brand-soft)}
.faq-item{background:var(--card);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);transition:box-shadow .35s var(--ease),border-color .3s var(--ease),transform .35s var(--ease)}
.faq-item:hover{box-shadow:var(--shadow-lg);border-color:rgba(230,57,70,.35)}
.faq-item.open{border-color:rgba(230,57,70,.5);box-shadow:0 10px 30px rgba(230,57,70,.12)}
.faq-q{padding:18px 20px;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;color:var(--text);transition:color .25s var(--ease),background .25s var(--ease);user-select:none}
.faq-q:hover{color:var(--brand);background:rgba(230,57,70,.05)}
.faq-q .arrow{transition:transform .35s var(--ease),color .25s var(--ease);color:var(--brand);font-size:14px;flex-shrink:0}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{padding:0 20px;max-height:0;overflow:hidden;transition:max-height .45s var(--ease),padding .35s var(--ease);color:var(--text-soft)}
.faq-a p{margin-bottom:0;padding-bottom:4px}
.faq-item.open .faq-a{max-height:600px;padding:0 20px 18px}
.contact-info{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.contact-info div{position:relative;background:var(--card);border-radius:var(--radius-sm);padding:16px 18px;font-size:15px;border:1px solid var(--line);box-shadow:var(--shadow);color:var(--text-soft);transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .3s var(--ease)}
.contact-info div:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(230,57,70,.35)}
.contact-info strong{color:var(--brand);font-weight:600}
footer{position:relative;background:#15171c;color:#a8aeb8;padding:44px 20px 0;margin-top:30px;overflow:hidden}
footer::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--grad-brand)}
body.dark footer{background:#0a0b0e}
.footer-inner{max-width:1180px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
footer h4{color:#fff;margin-bottom:14px;font-size:16px;font-weight:700;position:relative;padding-bottom:10px}
footer h4::after{content:"";position:absolute;left:0;bottom:0;width:28px;height:2px;border-radius:2px;background:var(--grad-brand)}
footer p{color:#9aa0aa;font-size:14px;line-height:1.8}
footer a{color:#a8aeb8;font-size:14px;display:block;margin-bottom:9px;transition:color .25s var(--ease),transform .25s var(--ease),padding-left .25s var(--ease)}
footer a:hover{color:#fff;transform:translateX(4px);padding-left:2px}
.copyright{max-width:1180px;margin:30px auto 0;padding:18px 0 26px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#7d8593;text-align:center}
.copyright p{margin:0;color:#7d8593}
.back-top{position:fixed;right:22px;bottom:26px;width:46px;height:46px;border-radius:50%;background:var(--grad-brand);color:#fff;border:none;font-size:20px;cursor:pointer;display:none;z-index:200;box-shadow:0 8px 24px rgba(230,57,70,.45);transition:transform .3s var(--ease),box-shadow .3s var(--ease),opacity .3s var(--ease)}
.back-top:hover{transform:translateY(-4px) scale(1.08);box-shadow:0 14px 32px rgba(230,57,70,.6)}
.back-top:active{transform:scale(.94)}
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:none}
section.reveal:nth-of-type(2){transition-delay:.06s}
section.reveal:nth-of-type(3){transition-delay:.12s}
body.dark .search-box input{background:transparent;color:var(--text)}
body.dark .theme-toggle{background:var(--card);color:var(--text);border-color:var(--line)}
body.dark nav.main-nav a{color:var(--text-soft)}
body.dark nav.main-nav a:hover{color:var(--brand-soft);background:rgba(230,57,70,.14)}
body.dark .faq-q:hover{background:rgba(230,57,70,.1)}
@media(max-width:900px){
.stats,.grid-3,.grid-2,.footer-inner,.contact-info{grid-template-columns:1fr 1fr}
h1{font-size:26px}
h2{font-size:22px}
.slide{padding:44px 32px;min-height:240px}
.slide h2{font-size:25px}
}
@media(max-width:640px){
nav.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--glass);backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);padding:16px 20px;box-shadow:0 12px 30px rgba(24,28,40,.14);border-bottom:1px solid var(--glass-line);border-radius:0 0 var(--radius) var(--radius)}
nav.main-nav.open{display:block;animation:navIn .35s var(--ease)}
@keyframes navIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}
nav.main-nav ul{flex-direction:column;gap:4px}
nav.main-nav a{display:block;padding:10px 12px}
.menu-toggle{display:block;transition:transform .3s var(--ease)}
.menu-toggle:active{transform:scale(.9)}
.stats,.grid-3,.grid-2,.footer-inner,.contact-info{grid-template-columns:1fr}
.search-box input{width:100px}
.search-box input:focus{width:120px}
h1{font-size:22px}
h2{font-size:20px}
section{padding:34px 0}
.slide{padding:36px 24px;min-height:220px}
.slide h2{font-size:22px}
.slide p{font-size:14.5px}
.stat .num{font-size:28px}
.card,.article-item{padding:18px}
.faq-q{padding:15px 16px;font-size:15px}
.faq-a{padding:0 16px}
.faq-item.open .faq-a{padding:0 16px 15px}
.banner{border-radius:var(--radius)}
.back-top{right:16px;bottom:18px;width:42px;height:42px}
}
@media(prefers-reduced-motion:reduce){
*{animation-duration:.001ms!important;transition-duration:.001ms!important}
.reveal{opacity:1;transform:none}
}