/* roulang page: index */
:root{
--c-primary:#2C5BE8;--c-primary-deep:#2247C0;--c-primary-soft:#E9EEFF;
--c-accent:#F2913C;--c-accent-soft:#FDF0E4;
--c-bg:#F6F8FC;--c-surface:#FFFFFF;--c-ink:#101828;--c-ink-2:#475467;--c-ink-3:#98A2B3;
--c-line:#E4E9F2;--r-card:14px;--r-btn:10px;
--shadow-card:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
--shadow-hover:0 12px 32px rgba(16,24,40,.12);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--c-bg);color:var(--c-ink);font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:15px;line-height:1.75;overflow-x:hidden}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}

/* 侧栏 */
.sidebar{position:fixed;top:0;left:0;bottom:0;width:248px;background:#fff;border-right:1px solid var(--c-line);padding:24px 16px;display:flex;flex-direction:column;gap:24px;z-index:60;overflow-y:auto}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:linear-gradient(135deg,#3E6BF0,var(--c-primary-deep));color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:.5px}
.brand-text strong{display:block;font-size:15px;line-height:1.3;font-weight:600}
.brand-text span{display:block;font-size:12px;color:var(--c-ink-3);line-height:1.4}
.side-nav{display:flex;flex-direction:column;gap:4px}
.side-nav a{display:flex;align-items:center;gap:10px;min-height:44px;padding:0 12px;border-radius:10px;border-left:3px solid transparent;color:var(--c-ink-2);font-size:14px;transition:background .2s ease-out,color .2s ease-out}
.side-nav a:hover{background:var(--c-primary-soft);color:var(--c-primary-deep)}
.side-nav a.active{background:var(--c-primary-soft);color:var(--c-primary);border-left-color:var(--c-primary);font-weight:600}
.side-nav svg{flex:0 0 18px}
.side-note{margin-top:auto;font-size:12px;color:var(--c-ink-3);line-height:1.6;padding:0 4px}
.drawer-close{display:none;position:absolute;top:12px;right:10px;width:36px;height:36px;border:0;border-radius:10px;background:var(--c-bg);color:var(--c-ink-2);cursor:pointer;font-size:16px;place-items:center}
.scrim{position:fixed;inset:0;background:rgba(16,24,40,.45);opacity:0;visibility:hidden;transition:opacity .25s ease-out,visibility .25s;z-index:55}
.scrim.show{opacity:1;visibility:visible}
.topbar{display:none}

/* 主区 */
.main{margin-left:248px;padding:0 32px}
.container{max-width:1160px;margin:0 auto}
.site-foot{margin-left:248px;padding:56px 32px 28px;margin-top:64px;background:#fff;border-top:1px solid var(--c-line)}

/* 通用板块 */
.sec{padding:68px 0}
.sec-head{margin-bottom:28px}
.sec-head h2{font-size:24px;font-weight:600;line-height:1.35}
.sec-head p{margin-top:10px;font-size:14px;color:var(--c-ink-2);line-height:1.85;max-width:780px}

/* Hero */
.hero{padding:52px 0 8px}
.hero-top{display:grid;gap:28px}
.eyebrow{display:inline-block;font-size:12px;font-weight:500;color:var(--c-primary);background:var(--c-primary-soft);padding:4px 12px;border-radius:999px}
.hero h1{font-size:clamp(28px,4vw,42px);font-weight:700;line-height:1.25;margin-top:14px}
.hero h1 .hl{color:var(--c-accent);background:var(--c-accent-soft);border-radius:8px;padding:0 4px}
.hero .lead{margin-top:16px;font-size:16px;color:var(--c-ink-2)}
.hero .desc{margin-top:10px;font-size:14px;color:var(--c-ink-2);max-width:580px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-fig{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card);aspect-ratio:4/3;background:var(--c-primary-soft)}
.hero-fig img{width:100%;height:100%;object-fit:cover}
.hero-tag{position:absolute;left:12px;bottom:12px;background:rgba(16,24,40,.8);color:#fff;font-size:12px;padding:5px 11px;border-radius:8px}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:14px;font-weight:500;border:1px solid transparent;cursor:pointer;transition:background .2s ease-out,box-shadow .2s ease-out,color .2s ease-out}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);box-shadow:0 10px 22px rgba(44,91,232,.28)}
.btn-ghost{background:#fff;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary-soft)}

/* 数据条 */
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:36px;padding:22px 18px;background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-card)}
.stats li{text-align:center}
.stats strong{display:block;font-size:22px;font-weight:700;color:var(--c-primary);line-height:1.3}
.stats span{font-size:12px;color:var(--c-ink-3)}

/* 功能卡 */
.feat-grid{display:grid;gap:16px}
.feat{background:#fff;border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out}
.feat:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feat svg{color:var(--c-primary)}
.feat h3{margin-top:12px;font-size:17px;font-weight:600}
.feat p{margin-top:8px;font-size:13px;color:var(--c-ink-2);line-height:1.75}

/* 竖版卡片 */
.tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.tile{background:#fff;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.cover{position:relative;aspect-ratio:3/4;overflow:hidden;background:var(--c-primary-soft)}
.cover img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease-out}
.tile:hover .cover img{transform:scale(1.03)}
.tag{position:absolute;top:8px;left:8px;background:rgba(16,24,40,.8);color:#fff;font-size:11px;line-height:1.7;padding:0 7px;border-radius:6px}
.tile-body{padding:10px 12px 12px}
.tile-body h3{font-size:14px;font-weight:600;line-height:1.45;min-height:2.9em;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.meta{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-size:12px;color:var(--c-ink-3)}
.score{color:var(--c-accent);font-weight:600}

/* 横版大卡 */
.hot-grid{display:grid;gap:16px}
.hot{display:flex;gap:14px;background:#fff;border-radius:var(--r-card);padding:12px;box-shadow:var(--shadow-card);transition:transform .2s ease-out,box-shadow .2s ease-out}
.hot:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.hot-thumb{flex:0 0 42%;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:var(--c-primary-soft)}
.hot-thumb img{width:100%;height:100%;object-fit:cover}
.hot-body{min-width:0}
.hot-body h3{font-size:15px;font-weight:600;line-height:1.4}
.hot-body p{margin-top:6px;font-size:13px;color:var(--c-ink-2);line-height:1.7}

/* 分类频道 */
.chan-grid{display:grid;gap:22px}
.chan{border-left:3px solid var(--c-primary);padding-left:16px}
.chan h3{font-size:16px;font-weight:600}
.chan p{margin-top:6px;font-size:13px;color:var(--c-ink-2);line-height:1.75}

/* 场景 */
.scene{display:grid;gap:20px;padding:30px 0;border-top:1px solid var(--c-line)}
.scene:first-of-type{border-top:0;padding-top:0}
.scene-fig{border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--shadow-card);background:var(--c-primary-soft)}
.scene-fig img{width:100%;height:100%;object-fit:cover}
.scene h3{font-size:18px;font-weight:600}
.scene p{margin-top:8px;font-size:14px;color:var(--c-ink-2);line-height:1.85}

/* 演示 */
.demo-grid{display:grid;gap:16px}
.demo{border-radius:var(--r-card);overflow:hidden;background:#fff;box-shadow:var(--shadow-card)}
.demo img{width:100%;aspect-ratio:16/10;object-fit:cover}
.demo p{padding:12px 14px;font-size:13px;color:var(--c-ink-2)}

/* 排行榜 */
.rank-grid{display:grid;gap:8px}
.rank-item{display:flex;align-items:center;gap:12px;background:#fff;border-radius:12px;padding:10px 14px;box-shadow:var(--shadow-card);transition:box-shadow .2s ease-out}
.rank-item:hover{box-shadow:var(--shadow-hover)}
.rank-no{flex:0 0 28px;height:28px;display:grid;place-items:center;border-radius:8px;background:var(--c-bg);color:var(--c-ink-3);font-size:13px;font-weight:700}
.rank-item.top3 .rank-no{background:var(--c-accent-soft);color:var(--c-accent);border:1px solid var(--c-accent)}
.rank-title{flex:1;min-width:0;font-size:14px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rank-heat{font-size:12px;color:var(--c-ink-3);white-space:nowrap}
.rank-cat{font-size:11px;color:var(--c-primary);background:var(--c-primary-soft);padding:1px 8px;border-radius:6px;white-space:nowrap}

/* 案例 */
.case-grid{display:grid;gap:16px}
.case{display:flex;gap:14px;background:#fff;border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow-card)}
.avatar{flex:0 0 40px;width:40px;height:40px;border-radius:50%;background:var(--c-primary-soft);color:var(--c-primary);display:grid;place-items:center;font-size:14px;font-weight:600}
.case h3{font-size:14px;font-weight:600}
.case p{margin-top:4px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.stars{color:var(--c-accent);font-size:12px;letter-spacing:1px;margin-top:6px;display:block}

/* 价格 */
.price-grid{display:grid;gap:16px}
.price{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);padding:24px;display:flex;flex-direction:column;box-shadow:var(--shadow-card)}
.price.recommended{border-color:var(--c-primary);box-shadow:0 12px 30px rgba(44,91,232,.14)}
.price h3{font-size:16px;font-weight:600}
.pill{display:inline-block;font-size:11px;color:#fff;background:var(--c-accent);padding:2px 8px;border-radius:6px;margin-left:8px;vertical-align:middle;font-weight:500}
.price .num{margin-top:12px;font-size:30px;font-weight:700;line-height:1.2}
.price .num small{font-size:13px;font-weight:400;color:var(--c-ink-3);margin-left:2px}
.price ul{margin:16px 0 22px;display:grid;gap:8px}
.price li{position:relative;padding-left:18px;font-size:13px;color:var(--c-ink-2);line-height:1.7}
.price li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:50%;background:var(--c-primary)}
.price .btn{margin-top:auto;width:100%}

/* 评价墙 */
.wall{columns:1;column-gap:14px}
.wall blockquote{margin:0 0 14px;break-inside:avoid;background:#fff;border-radius:12px;padding:14px 16px;box-shadow:var(--shadow-card);font-size:13px;color:var(--c-ink-2);line-height:1.75}

/* 口碑 */
.voice{display:grid;gap:12px}
.voice-item{background:#fff;border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow-card);border-top:3px solid var(--c-primary)}
.voice-item h3{font-size:15px;font-weight:600}
.voice-item p{margin-top:8px;font-size:13px;color:var(--c-ink-2);line-height:1.75}
.voice-item span{display:inline-block;margin-top:10px;font-size:12px;color:var(--c-ink-3)}

/* 资讯 */
.news-list{background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow-card);overflow:hidden}
.news-item{display:flex;gap:14px;align-items:center;padding:14px 18px;border-bottom:1px solid var(--c-line)}
.news-item:last-child{border-bottom:0}
.news-thumb{flex:0 0 96px;width:96px;aspect-ratio:4/3;border-radius:8px;overflow:hidden;background:var(--c-primary-soft)}
.news-thumb img{width:100%;height:100%;object-fit:cover}
.news-item h3{font-size:14px;font-weight:500;line-height:1.5}
.news-date{margin-top:4px;font-size:12px;color:var(--c-ink-3)}

/* FAQ */
.faq{display:grid;gap:12px;max-width:880px}
.faq details{background:#fff;border-radius:12px;box-shadow:var(--shadow-card);padding:0 18px}
.faq summary{list-style:none;cursor:pointer;padding:16px 0;font-size:15px;font-weight:500;display:flex;align-items:center;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:20px;line-height:1;color:var(--c-primary)}
.faq details[open] summary::after{content:"−"}
.faq p{padding-bottom:16px;font-size:13px;color:var(--c-ink-2);line-height:1.85}

/* CTA */
.cta{background:linear-gradient(90deg,#fff 58%,rgba(255,255,255,.5)),url(/assets/images/04cc569d2178f99b.jpg) right center/cover no-repeat;border-radius:18px;box-shadow:var(--shadow-card);padding:32px 24px;display:grid;gap:22px}
.cta h2{font-size:22px;font-weight:600}
.cta p{margin-top:8px;font-size:13px;color:var(--c-ink-2);line-height:1.8}
.sub-form{display:flex;gap:10px;flex-wrap:wrap}
.sub-form input{flex:1;min-width:0;height:44px;border-radius:var(--r-btn);border:1px solid var(--c-line);padding:0 14px;font-size:14px;background:#fff;outline:none;transition:border-color .2s ease-out}
.sub-form input:focus{border-color:var(--c-primary)}
.form-note{margin-top:10px;font-size:12px;color:var(--c-ink-3)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 页脚 */
.foot-grid{display:grid;gap:28px}
.foot-brand strong{display:block;font-size:15px;font-weight:600}
.foot-brand p{margin-top:12px;font-size:13px;color:var(--c-ink-2);line-height:1.85}
.foot-grid h4{font-size:14px;font-weight:600;margin-bottom:10px}
.foot-grid a{display:block;font-size:13px;color:var(--c-ink-2);padding:4px 0;transition:color .2s ease-out}
.foot-grid a:hover{color:var(--c-primary)}
.foot-bottom{margin-top:32px;padding-top:20px;border-top:1px solid var(--c-line);display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;font-size:12px;color:var(--c-ink-3)}

@media (min-width:520px){
.tiles{grid-template-columns:repeat(3,1fr);gap:16px}
.wall{columns:2;column-gap:16px}
.demo-grid{grid-template-columns:repeat(3,1fr);gap:20px}
}
@media (min-width:768px){
.hero-top{grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.stats{grid-template-columns:repeat(4,1fr);gap:0;padding:24px 8px}
.stats li+li{border-left:1px solid var(--c-line)}
.feat-grid{grid-template-columns:repeat(3,1fr);gap:20px}
.feat:first-child{grid-column:span 3;padding:26px}
.tiles{grid-template-columns:repeat(4,1fr);gap:20px}
.hot-grid{grid-template-columns:1fr 1fr;gap:20px}
.chan-grid{grid-template-columns:repeat(3,1fr);gap:26px 32px}
.scene{grid-template-columns:1fr 300px;gap:40px;align-items:center}
.scene.alt{grid-template-columns:300px 1fr}
.scene.alt .scene-fig{order:-1}
.rank-grid{grid-template-columns:1fr 1fr;gap:8px 24px}
.case-grid{grid-template-columns:1fr 1fr;gap:20px}
.price-grid{grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.voice{grid-template-columns:repeat(3,1fr);gap:20px}
.cta{grid-template-columns:1fr 380px;align-items:center;gap:36px;padding:40px}
.foot-grid{grid-template-columns:1.7fr 1fr 1fr;gap:40px}
}
@media (min-width:1024px){
.tiles{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}
.wall{columns:3;column-gap:20px}
}
@media (max-width:1023px){
.sidebar{width:72px;padding:20px 8px;align-items:center;gap:18px}
.brand-text{display:none}
.side-nav{width:100%;gap:6px}
.side-nav a{justify-content:center;padding:0;border-left-width:0;border-radius:12px}
.side-nav a .nav-text,.side-note{display:none}
.main,.site-foot{margin-left:72px;padding-left:24px;padding-right:24px}
.main{padding-top:8px}
}
@media (max-width:767px){
.topbar{display:flex;align-items:center;justify-content:space-between;gap:12px;position:sticky;top:0;height:56px;padding:0 16px;background:#fff;border-bottom:1px solid var(--c-line);z-index:50}
.topbar-title{font-size:15px;font-weight:600}
.hamburger{width:44px;height:44px;display:grid;place-items:center;border:0;border-radius:10px;background:transparent;color:var(--c-ink);cursor:pointer;font-size:20px;line-height:1}
.sidebar{width:260px;padding:20px 16px;align-items:stretch;transform:translateX(-100%);transition:transform .25s ease-out;border-right:1px solid var(--c-line)}
.sidebar.open{transform:translateX(0)}
.brand-text{display:block}
.side-nav a{justify-content:flex-start;padding:0 12px;border-left-width:3px;border-radius:10px}
.side-nav a .nav-text{display:inline}
.drawer-close{display:grid}
.main,.site-foot{margin-left:0;padding-left:16px;padding-right:16px}
.main{padding-top:8px;padding-bottom:8px}
.site-foot{padding-top:40px;margin-top:48px}
.sec{padding:42px 0}
.sec-head h2{font-size:20px}
.hero{padding:32px 0 0}
.hero .lead{font-size:15px}
.stats strong{font-size:20px}
.news-thumb{flex:0 0 80px;width:80px}
.rank-cat{display:none}
}
@media (max-width:519px){
.sub-form{flex-direction:column}
.sub-form .btn{width:100%}
.form-note{text-align:left}
.cta{padding:24px 18px}
.news-item{padding:12px 14px;gap:12px}
}