:root{--brand:#1a1a2e;--brand2:#16213e;--accent:#e94560;--accent2:#0f3460;--text:#222;--muted:#666;--bg:#fff;--card:#f7f8fa;--border:#e6e8eb;--radius:12px;--glass:rgba(255,255,255,.12);--glass-border:rgba(255,255,255,.18);--shadow:0 10px 26px rgba(0,0,0,.08);--shadow-lg:0 18px 44px rgba(0,0,0,.14);--ease:cubic-bezier(.22,.61,.36,1)}
[data-theme="dark"]{--brand:#0d0d1a;--brand2:#12122a;--accent:#ff5c7a;--accent2:#1f3a5f;--text:#e8e8ef;--muted:#a0a0b0;--bg:#0a0a14;--card:#16162a;--border:#2a2a42;--glass:rgba(255,255,255,.06);--glass-border:rgba(255,255,255,.12);--shadow:0 10px 26px rgba(0,0,0,.5);--shadow-lg:0 18px 44px rgba(0,0,0,.6)}
*{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:1.8;font-size:16px;transition:background .3s,color .3s;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none;transition:color .25s var(--ease)}
a:hover{text-decoration:underline}
img,svg{max-width:100%;display:block}
::selection{background:var(--accent);color:#fff}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
header.site-header{position:sticky;top:0;z-index:100;background:linear-gradient(135deg,var(--brand),var(--brand2));color:#fff;box-shadow:0 2px 12px rgba(0,0,0,.15);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;max-width:1180px;margin:0 auto;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:#fff;white-space:nowrap;transition:transform .3s var(--ease)}
.logo:hover{text-decoration:none;transform:translateY(-1px)}
.logo svg{width:34px;height:34px;transition:transform .4s var(--ease)}
.logo:hover svg{transform:rotate(-6deg) scale(1.06)}
nav.main-nav ul{list-style:none;display:flex;gap:22px;flex-wrap:wrap}
nav.main-nav a{color:#e8e8ef;font-size:15px;position:relative;padding:4px 0;transition:color .25s var(--ease)}
nav.main-nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--accent);border-radius:2px;transition:width .3s var(--ease)}
nav.main-nav a:hover{color:var(--accent);text-decoration:none}
nav.main-nav a:hover::after{width:100%}
.header-tools{display:flex;align-items:center;gap:10px}
.search-box{display:flex;align-items:center;background:var(--glass);border:1px solid var(--glass-border);border-radius:20px;padding:4px 10px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:background .25s var(--ease),border-color .25s var(--ease)}
.search-box:focus-within{background:rgba(255,255,255,.2);border-color:var(--accent)}
.search-box input{background:transparent;border:none;outline:none;color:#fff;width:130px;font-size:14px}
.search-box input::placeholder{color:#bbb}
.search-box button{background:none;border:none;color:#fff;cursor:pointer;font-size:15px;transition:transform .25s var(--ease)}
.search-box button:hover{transform:scale(1.15)}
.icon-btn{background:var(--glass);border:1px solid var(--glass-border);color:#fff;width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);transition:transform .3s var(--ease),background .25s var(--ease)}
.icon-btn:hover{transform:rotate(20deg) scale(1.08);background:rgba(255,255,255,.22)}
.menu-toggle{display:none;background:none;border:none;color:#fff;font-size:24px;cursor:pointer;transition:transform .25s var(--ease)}
.menu-toggle:hover{transform:scale(1.1)}
.banner{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--brand2) 0%,var(--accent2) 55%,var(--accent) 130%);color:#fff}
.banner::before,.banner::after{content:"";position:absolute;border-radius:50%;filter:blur(60px);opacity:.45;pointer-events:none}
.banner::before{width:420px;height:420px;background:var(--accent);top:-160px;right:-120px;animation:float 9s ease-in-out infinite}
.banner::after{width:360px;height:360px;background:#4b6cb7;bottom:-180px;left:-100px;animation:float 11s ease-in-out infinite reverse}
@keyframes float{0%,100%{transform:translate(0,0)}50%{transform:translate(-24px,26px)}}
.slide{display:none;padding:70px 20px;text-align:center;animation:fade .6s var(--ease);position:relative;z-index:1}
.slide.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.slide h1{font-size:34px;margin-bottom:16px;line-height:1.3;letter-spacing:.5px;text-shadow:0 2px 18px rgba(0,0,0,.25)}
.slide p{font-size:17px;color:#d8d8e8;max-width:760px;margin:0 auto 22px}
.btn{display:inline-block;background:linear-gradient(135deg,var(--accent),#ff7a90);color:#fff;padding:12px 30px;border-radius:30px;font-weight:600;transition:transform .25s var(--ease),box-shadow .25s var(--ease);box-shadow:0 8px 22px rgba(233,69,96,.35)}
.btn:hover{text-decoration:none;transform:translateY(-3px) scale(1.03);box-shadow:0 14px 30px rgba(233,69,96,.5)}
.banner-dots{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:2}
.banner-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:background .25s var(--ease),transform .25s var(--ease),width .25s var(--ease)}
.banner-dots span:hover{transform:scale(1.25)}
.banner-dots span.active{background:var(--accent);width:26px;border-radius:6px}
section{padding:56px 0;position:relative}
section:nth-child(even){background:var(--card)}
.section-title{text-align:center;margin-bottom:36px}
.section-title h2{font-size:27px;color:var(--text);margin-bottom:10px;line-height:1.4;position:relative;display:inline-block}
.section-title h2::after{content:"";display:block;width:56px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--accent2));margin:12px auto 0}
.section-title p{color:var(--muted);max-width:720px;margin:0 auto}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stat-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:26px 14px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);position:relative;overflow:hidden}
.stat-card::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(233,69,96,.08),transparent 60%);opacity:0;transition:opacity .3s var(--ease)}
.stat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--accent)}
.stat-card:hover::before{opacity:1}
.stat-card .num{font-size:32px;font-weight:700;color:var(--accent);position:relative;z-index:1}
.stat-card .label{color:var(--muted);font-size:14px;margin-top:6px;position:relative;z-index:1}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);position:relative}
section:nth-child(even) .card{background:var(--bg)}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(233,69,96,.4)}
.card h3{font-size:18px;margin-bottom:10px;color:var(--text);line-height:1.5}
.card h4{font-size:16px;margin:14px 0 8px;color:var(--accent2)}
[data-theme="dark"] .card h4{color:#7aa2d6}
.card p{color:var(--muted);font-size:15px}
.card ul{margin:10px 0 0 18px;color:var(--muted);font-size:15px}
.card ul li{margin-bottom:6px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.visible{opacity:1;transform:none}
.article-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.article-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);position:relative;overflow:hidden}
.article-item::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--accent),var(--accent2));transform:scaleY(0);transform-origin:top;transition:transform .35s var(--ease)}
.article-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(233,69,96,.35)}
.article-item:hover::before{transform:scaleY(1)}
.article-item .meta{font-size:13px;color:var(--muted);margin-bottom:8px}
.article-item h3{font-size:17px;margin-bottom:10px;line-height:1.5;transition:color .25s var(--ease)}
.article-item:hover h3{color:var(--accent)}
.article-item .summary{color:var(--muted);font-size:15px;margin-bottom:12px}
.read-more{font-size:14px;font-weight:600;display:inline-block;transition:transform .25s var(--ease)}
.article-item:hover .read-more{transform:translateX(4px)}
.article-body{max-width:900px;margin:0 auto}
.article-body h3{margin:24px 0 10px;font-size:19px;color:var(--text);line-height:1.5;padding-left:12px;border-left:4px solid var(--accent);border-radius:2px}
.article-body p{margin-bottom:14px;color:var(--text)}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;background:var(--bg);overflow:hidden;transition:border-color .3s var(--ease),box-shadow .3s var(--ease)}
.faq-item:hover{border-color:rgba(233,69,96,.4);box-shadow:var(--shadow)}
.faq-item.open{border-color:var(--accent);box-shadow:var(--shadow)}
.faq-q{width:100%;text-align:left;background:none;border:none;padding:18px 22px;font-size:16px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px;transition:color .25s var(--ease);font-family:inherit}
.faq-q:hover{color:var(--accent)}
.faq-q::after{content:"+";font-size:22px;color:var(--accent);transition:transform .35s var(--ease);flex:0 0 auto;line-height:1}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s var(--ease),padding .35s var(--ease);padding:0 22px}
.faq-item.open .faq-a{max-height:600px;padding:0 22px 18px}
.faq-a p{color:var(--muted);font-size:15px}
.howto-step{display:flex;gap:18px;margin-bottom:22px;transition:transform .3s var(--ease)}
.howto-step:hover{transform:translateX(6px)}
.step-num{flex:0 0 46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#ff7a90);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;box-shadow:0 6px 16px rgba(233,69,96,.35);transition:transform .3s var(--ease)}
.howto-step:hover .step-num{transform:scale(1.1) rotate(-6deg)}
.step-content h4{font-size:17px;margin-bottom:6px}
.step-content p{color:var(--muted);font-size:15px}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:22px;text-align:center;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease)}
.contact-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:var(--accent)}
.contact-card .ico{font-size:28px;margin-bottom:10px;transition:transform .35s var(--ease)}
.contact-card:hover .ico{transform:scale(1.18) rotate(6deg)}
.contact-card h4{margin-bottom:6px}
.contact-card p{color:var(--muted);font-size:14px;word-break:break-all}
.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(--accent)}
footer.site-footer{background:linear-gradient(135deg,var(--brand),var(--brand2));color:#c8c8d8;padding:48px 0 20px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px;margin-bottom:30px}
footer h4{color:#fff;font-size:15px;margin-bottom:14px}
footer ul{list-style:none}
footer ul li{margin-bottom:8px}
footer a{color:#c8c8d8;transition:color .25s var(--ease)}
footer a:hover{color:var(--accent);text-decoration:none}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;text-align:center;color:#8a8aa0;font-size:13px}
.back-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--accent),#ff7a90);color:#fff;border:none;cursor:pointer;font-size:20px;display:none;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(233,69,96,.4);z-index:99;transition:transform .3s var(--ease),box-shadow .3s var(--ease)}
.back-top.show{display:flex}
.back-top:hover{transform:translateY(-4px) scale(1.06);box-shadow:0 12px 28px rgba(233,69,96,.55)}
.author-box{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin:20px 0;font-size:14px;color:var(--muted);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.author-box strong{color:var(--text)}
#links .card ul{columns:2;list-style:none;margin:0}
#links .card ul li{margin-bottom:10px}
@media(max-width:900px){
.stats{grid-template-columns:repeat(2,1fr)}
.grid-3,.grid-2,.article-list,.contact-grid,.footer-grid{grid-template-columns:1fr}
nav.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:linear-gradient(135deg,var(--brand),var(--brand2));padding:16px 20px;box-shadow:0 12px 24px rgba(0,0,0,.25);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
nav.main-nav.open{display:block;animation:fade .3s var(--ease)}
nav.main-nav ul{flex-direction:column;gap:12px}
.menu-toggle{display:block}
.search-box input{width:90px}
.slide h1{font-size:25px}
.slide p{font-size:15px}
.section-title h2{font-size:23px}
#links .card ul{columns:1}
}
@media(max-width:520px){
.nav-wrap{padding:12px 14px;gap:10px}
.logo{font-size:16px}
.logo svg{width:28px;height:28px}
.search-box{padding:3px 8px}
.search-box input{width:70px;font-size:13px}
.icon-btn{width:32px;height:32px;font-size:14px}
.slide{padding:52px 16px}
.slide h1{font-size:21px}
.btn{padding:10px 22px;font-size:14px}
section{padding:42px 0}
.card,.article-item,.contact-card{padding:18px}
.back-top{right:16px;bottom:16px;width:42px;height:42px}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
.reveal{opacity:1;transform:none}
}