:root {
    --bg: #fff; --bg2: #f8f9fc; --card: #fff;
    --bd: #e5e7f0; --accent: #4f6ef6; --a2: #7c3aed; --a3: #f43f5e;
    --t1: #1a1a2e; --t2: #5a5a7a; --t3: #9494a8;
    --g1: linear-gradient(135deg, #4f6ef6, #7c3aed);
    --g2: linear-gradient(135deg, #7c3aed, #f43f5e);
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;background:var(--bg);color:var(--t1);line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
section{padding:80px 0;content-visibility:auto;contain-intrinsic-size:500px}
.bg2{background:#e3e3e3}

/* Nav */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,0.92);backdrop-filter:blur(20px);border-bottom:1px solid var(--bd)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700;color:var(--t1)}
.nav-logo img{width:36px;height:36px;border-radius:10px}
.nav-links{display:flex;gap:28px;list-style:none}
.nav-links a{color:var(--t2);font-size:14px;font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--accent)}
.nav-r{display:flex;align-items:center;gap:10px}
.lang-sw button{background:0;border:1px solid var(--bd);color:var(--t2);padding:4px 8px;border-radius:6px;font-size:12px;cursor:pointer}
.lang-sw button.active{color:var(--accent);border-color:var(--accent)}
.menu-btn{display:none;background:0;border:none;color:var(--t1);font-size:24px;cursor:pointer}
@media(max-width:768px){.nav-links{display:none}.nav-links.open{display:flex;flex-direction:column;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--bd);padding:20px 24px;gap:16px}.menu-btn{display:block}}

/* Btn */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:10px;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:all .3s}
.btn-p{background:var(--g1);color:#fff;box-shadow:0 4px 20px rgba(79,110,246,.25)} .btn-p:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(79,110,246,.35)}
.btn-o{background:0;border:1px solid var(--bd);color:var(--t1)} .btn-o:hover{border-color:var(--accent);color:var(--accent)}
.btn-xl{padding:18px 48px;font-size:18px;border-radius:14px}
.btn-ghost{background:0;color:var(--t2);padding:6px 12px;font-size:13px} .btn-ghost:hover{color:var(--accent)}

/* Hero */
.hero{padding:140px 0 80px;text-align:center;background:linear-gradient(180deg,#f0f4ff,#fff)}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(79,110,246,.08);border:1px solid rgba(79,110,246,.15);color:var(--accent);padding:6px 18px;border-radius:50px;font-size:13px;font-weight:600;margin-bottom:20px}
.hero-badge span{width:7px;height:7px;background:#22c55e;border-radius:50%;animation:blink 2s infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(32px,5vw,56px);font-weight:800;line-height:1.2;margin-bottom:16px}
.hero h1 .g{background:linear-gradient(135deg,#4f6ef6,#7c3aed,#f43f5e);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero h1 .sub{display:block;font-size:clamp(18px,3vw,24px);font-weight:500;color:var(--t2);margin-top:8px}
.hero p{color:var(--t2);font-size:16px;max-width:600px;margin:0 auto 32px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-bottom:48px}
.hero-nums{display:flex;justify-content:center;gap:48px;flex-wrap:wrap}
.hero-num{text-align:center}.hero-num b{font-size:32px;font-weight:800;background:var(--g1);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.hero-num span{font-size:13px;color:var(--t3);display:block}

/* Sec title */
.sec-tit{text-align:center;margin-bottom:10px}
.sec-tit label{display:inline-block;color:var(--accent);font-size:12px;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:8px;background:rgba(79,110,246,.06);padding:4px 14px;border-radius:20px}
.sec-tit h2{font-size:clamp(24px,4vw,38px);font-weight:800;margin-bottom:12px}
.sec-tit p{color:var(--t2);font-size:15px;/*max-width:500px;*/margin:0 auto}

/* Features */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat-card{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:32px 24px;transition:all .3s}
.feat-card:hover{transform:translateY(-6px);box-shadow:0 12px 40px rgba(79,110,246,.1);border-color:var(--accent)}
.feat-card .fc-hd{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.feat-card .fc-icon{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px}
.fc-icon.b{background:rgba(79,110,246,.08)}.fc-icon.p{background:rgba(124,58,237,.08)}.fc-icon.r{background:rgba(244,63,94,.08)}.fc-icon.g{background:rgba(34,197,94,.08)}
.feat-card h3{font-size:17px;font-weight:700}
.feat-card p{color:var(--t2);font-size:13px;line-height:1.7;margin-top:8px}

/* download */
.container{
    max-width: 1200px;
    margin: 0 auto;
}
.sec-tit{
    text-align: center;
    margin-bottom: 10px;
}
.sec-tit label{
    display: inline-block;
    font-size: 14px;
    letter-spacing: 2px;
    color: #42a5f5;
    margin-bottom: 12px;
}
.sec-tit h2{
    font-size: 32px;
    margin-bottom: 16px;
    font-weight: 600;
}
.sec-tit img{
    width: 100%;
}
.sec-tit p{
    font-size: 16px;
    color: #b0b8c4;
    margin-bottom: 10px;
}
/* 左右主容器 flex */
.stack-wrap{
    display: flex;
    align-items: center;
    gap: 40px;
}
/* 左侧技术列表 */
.tech-left{
    flex: 1;
}
.tech-grid{
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}
.tech-item{
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 20px 24px;
    transition: 0.3s ease;
}
.tech-item:hover{
    background: rgba(66,165,245,0.1);
    transform: translateY(-4px);
}
.tech-item h4{
    font-size: 18px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.tech-item p{
    color: #b0b8c4;
    line-height: 1.6;
    font-size: 15px;
}
/* 右侧图片区域 */
.img-right{
    flex: 1;
}
.img-right img{
    width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
}
/* 移动端自适应：小于768px上下排列 */
@media (max-width:768px){
    .stack-wrap{
        flex-direction: column-reverse;
    }
    .sec-tit h2{
        font-size: 24px;
    }
    #stack{
        padding: 40px 15px;
    }
}






/*login*/

.engine-wrap{
    display: flex;
    align-items: center;
    gap: 45px;
}
/* 左侧图片区域 */
.img-left{
    flex: 1;
}
.img-left img{
    width: 100%;
    height: auto;
    border-radius: 12px;
    display: block;
}
/* 右侧内容列表 */
.content-right{
    flex: 1;
}
.login-grid{
    display: grid;
    grid-template-columns: 1fr;
    gap: 26px;
}
.login-item{
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 22px 26px;
    transition: all 0.3s ease;
}
.login-item:hover{
    background: rgba(66,165,245,0.1);
    transform: translateY(-4px);
}
.login-badge{
    display: inline-block;
    background: #42a5f5;
    font-size: 13px;
    padding: 4px 10px;
    border-radius: 99px;
    margin-bottom: 12px;
}
.login-item h4{
    font-size: 19px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.login-item p{
    color: #b0b8c4;
    line-height: 1.7;
    font-size: 15px;
}
.login-item li{
    color: #b0b8c4;
    line-height: 1.7;
    font-size: 15px;
}

@media (max-width:768px){
    .engine-wrap{
        flex-direction: column;
    }
    .sec-tit h2{
        font-size: 24px;
    }
    #engine{
        padding: 40px 15px;
    }
}

/* Speed */
.speed-box{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:40px;max-width:800px;margin:0 auto}
.speed-sel{display:flex;align-items:center;gap:12px;margin-bottom:28px;justify-content:center;flex-wrap:wrap}
.speed-sel label{color:var(--t2);font-size:14px}
.speed-sel select{background:#f8f9fc;border:1px solid var(--bd);color:var(--t1);padding:10px 16px;border-radius:8px;font-size:14px;cursor:pointer;outline:none}
.speed-vs{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center}
.speed-blk{background:#f8f9fc;border-radius:12px;padding:28px 20px;text-align:center}
.speed-blk.bad{border:1px solid rgba(244,63,94,.2)}.speed-blk.good{border:1px solid rgba(34,197,94,.2);position:relative}
.speed-blk.good::after{content:'✓ 推荐';position:absolute;top:-11px;right:16px;background:var(--g1);color:#fff;padding:3px 12px;border-radius:20px;font-size:11px;font-weight:600}
.speed-blk h5{font-size:12px;color:var(--t3);text-transform:uppercase;letter-spacing:1px;margin-bottom:12px}
.speed-blk .big{font-size:42px;font-weight:800}.big.r{color:var(--a3)}.big.gr{color:#22c55e}
.speed-blk .unit{font-size:14px;color:var(--t3)}.speed-mid{font-size:18px;font-weight:700;color:var(--t3)}
.speed-foot{display:flex;justify-content:center;gap:36px;margin-top:20px;flex-wrap:wrap}
.speed-foot dt{font-size:12px;color:var(--t3)}.speed-foot dd{font-size:18px;font-weight:700}
.speed-foot dd.s1{color:#22c55e}.speed-foot dd.s2{color:var(--accent)}
@media(max-width:768px){.speed-vs{grid-template-columns:1fr}.speed-mid{text-align:center;transform:rotate(90deg)}.speed-box{padding:24px}}

/* Nodes */
.nodes-row{display:flex;justify-content:center;gap:16px;flex-wrap:wrap}
.node-chip{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--bd);border-radius:50px;padding:10px 20px;font-size:14px;transition:all .3s}
.node-chip:hover{border-color:var(--accent);transform:scale(1.05)}
.node-chip em{font-size:18px}.node-chip b{color:#22c55e;font-size:13px}

/* Pricing */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:960px;margin:0 auto}
.price-card{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:32px 24px;text-align:center;transition:all .3s;position:relative}
.price-card:hover{transform:translateY(-6px)}
.price-card.hot{border-color:var(--accent);background:linear-gradient(180deg,rgba(79,110,246,.03),rgba(124,58,237,.02));box-shadow:0 8px 40px rgba(79,110,246,.08)}
.price-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--g1);color:#fff;padding:5px 18px;border-radius:20px;font-size:12px;font-weight:700}
.price-card h3{font-size:19px;font-weight:700;margin-bottom:4px}
.price-card .pd{color:var(--t2);font-size:13px;margin-bottom:20px}
.price-card .pp{font-size:38px;font-weight:800;margin-bottom:4px}
.price-card .pp small{font-size:18px;font-weight:600;vertical-align:top}
.price-card .pp em{font-size:14px;color:var(--t3);font-weight:400;font-style:normal}
.price-card .po{font-size:13px;color:var(--t3);text-decoration:line-through;margin-bottom:20px}
.price-feat{list-style:none;text-align:left;margin-bottom:24px}
.price-feat li{padding:7px 0;font-size:13px;color:var(--t2);display:flex;align-items:center;gap:8px}
.price-feat li::before{content:'✓';color:#22c55e;font-weight:700}

/* Reviews */
.rev-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.rev-card{background:var(--card);border:1px solid var(--bd);border-radius:16px;padding:24px;transition:all .3s}
.rev-card:hover{border-color:var(--accent);box-shadow:0 8px 30px rgba(79,110,246,.06)}
.rev-stars{color:#fbbf24;font-size:15px;margin-bottom:10px}
.rev-txt{color:var(--t2);font-size:13px;line-height:1.7;margin-bottom:14px;font-style:italic}
.rev-author{display:flex;align-items:center;gap:10px}
.rev-avatar{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:15px}
.rev-name{font-weight:600;font-size:13px}.rev-role{font-size:11px;color:var(--t3)}

/* FAQ */
.faq-wrap{margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--bd);border-radius:12px;margin-bottom:10px;overflow:hidden;transition:all .3s}
.faq-item:hover{border-color:rgba(79,110,246,.2)}
.faq-q{width:100%;background:0;border:none;color:var(--t1);padding:18px 20px;font-size:14px;font-weight:600;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q span{width:26px;height:26px;border-radius:50%;background:rgba(79,110,246,.06);display:flex;align-items:center;justify-content:center;font-size:14px;transition:all .3s;flex-shrink:0;color:var(--t3)}
.faq-item.open .faq-q span{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:all .4s}
.faq-item.open .faq-a{max-height:300px}
.faq-a-inner{padding:0 20px 18px;color:var(--t2);font-size:13px;line-height:1.7}

/* CTA */
.cta{text-align:center;padding:80px 0;background:var(--g1);color:#fff}
.cta h2{font-size:clamp(24px,4vw,38px);font-weight:800;margin-bottom:12px}
.cta p{opacity:.9;font-size:15px;margin-bottom:28px}
.cta .btn-p{background:rgba(255,255,255,.15);border:2px solid rgba(255,255,255,.4);box-shadow:none}
.cta .btn-p:hover{background:rgba(255,255,255,.25)}



/*news*/
.post {
    width: 92%;
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
}
.posttitle {
    text-align: center;
    font-size: 26px;
}
.postmeta {
    text-align: center;
    margin: 15px 0;
}
.postmeta span {
    margin: 0 10px;
    font-size: 14px;
    color: #777;
}
.entry {
    font-size: 16px;
    line-height: 1.7;
}
.entry p {
    word-break: break-all;
}
.relatedpost {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #ddd;
}
.boxtitle {
    text-align: center;
    font-size: 20px;
}
.warning {
    text-align: center;
    color: #888;
}

@media screen and (max-width: 768px) {
    .posttitle {
        font-size: 20px;
    }
    .boxtitle {
        font-size: 17px;
    }
    .post {
        padding: 15px;
    }
}


.relatedpost {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.relatedpost .boxtitle {
    text-align: center;
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    margin: 0 0 20px;
    color: #222;
}

.relatedpost ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}

.relatedpost ul li {
    display: flex;
    flex-direction: column;
    background: #f9f9f9;
    padding: 12px;
    border-radius: 6px;
    box-sizing: border-box;
}

.relatedpost .pic {
    width: 100%;
    overflow: hidden;
    margin-bottom: 12px;
}
.relatedpost .pic a {
    display: block;
}
.relatedpost .pic img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.relatedpost .pic img:hover {
    transform: scale(1.05);
}
.relatedpost .info h4 {
    margin: 0 0 8px;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    font-weight: 500;
}
.relatedpost .info h4 a {
    color: #222;
    text-decoration: none;
}
.relatedpost .info h4 a:hover {
    color: #007cba;
}
.relatedpost .info p {
    font-size: clamp(0.8rem, 1.8vw, 0.9rem);
    color: #666;
    line-height: 1.6;
    margin: 0;
    /* 多行省略，控制文字高度 */
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media screen and (max-width: 768px) {
    .relatedpost ul {
        gap: 16px;
    }
    .relatedpost ul li {
        padding: 10px;
    }
}

/* Footer */
footer{background:#1a1a2e;color:#b0b0c8;padding:48px 0 28px}
footer .f-grid{display:grid;grid-template-columns:2fr 1fr 2fr;gap:36px;margin-bottom:36px}
footer .f-grid p{font-size:13px;line-height:1.7;margin-top:10px}
footer h5{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px}
footer .f-col a{display:block;color:#b0b0c8;font-size:13px;padding:3px 0;transition:color .2s}
footer .f-col a:hover{color:var(--accent)}
footer .f-bot{border-top:1px solid rgba(255,255,255,.08);padding-top:20px;text-align:center;font-size:12px}
footer .f-logo{display:flex;align-items:center;gap:8px;color:#fff;font-size:18px;font-weight:700;margin-bottom:4px}
footer .f-logo img{width:36px;height:36px;border-radius:10px}

@media(max-width:968px){.feat-grid,.price-grid,.rev-grid,.tech-grid{grid-template-columns:1fr;max-width:480px;margin:0 auto}
    footer .f-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){footer .f-grid{grid-template-columns:1fr}.hero-nums{gap:20px}}