/* roulang page: index */
:root{
  --brand:#2F6BFF;--brand-dark:#1E4FD6;--ink:#0B1B3A;--text:#334155;--muted:#5B6B82;
  --bg:#F6F9FE;--line:#E3EBF7;--card-line:#E6EDF7;--litchi:#FF5A5F;--gold:#F5B301;
  --radius:18px;--radius-sm:12px;
  --shadow:0 10px 30px rgba(31,94,255,.08);
  --shadow-hov:0 18px 40px rgba(31,94,255,.16);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:#fff;color:var(--text);font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:0;line-height:1.25}
h1{font-size:clamp(36px,5vw,64px);line-height:1.15}
h2{font-size:clamp(26px,3.2vw,38px)}
h3{font-size:clamp(20px,2vw,24px);line-height:1.4}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section--tint{background:var(--bg)}
.lead{max-width:720px;color:var(--muted)}
.sec-head{max-width:760px}
.sec-head h2 + p{margin-top:14px;color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;min-height:32px;padding:0 14px;border-radius:999px;background:#EAF1FF;color:var(--brand-dark);font-size:14px;font-weight:600}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--litchi)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:12px;font-size:16px;font-weight:600;transition:background .2s,color .2s,box-shadow .2s,transform .2s,border-color .2s}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 8px 22px rgba(47,107,255,.28)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 14px 30px rgba(47,107,255,.32)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-2px)}
.btn-sm{min-height:44px;padding:0 20px;font-size:15px}
.btn:focus-visible,.nav-link:focus-visible,.faq-q:focus-visible,.icon-btn:focus-visible,.mnav a:focus-visible{outline:2px solid #9DBBFF;outline-offset:3px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:0 8px 24px rgba(11,27,58,.08)}
.nav-wrap{display:flex;align-items:center;gap:28px;min-height:76px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--litchi);position:relative;display:inline-block}
.logo-mark::after{content:"";position:absolute;left:12px;top:10px;border-left:10px solid #fff;border-top:7px solid transparent;border-bottom:7px solid transparent}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-text strong{font-size:17px;color:var(--ink);font-weight:700}
.logo-text em{font-style:normal;font-size:12px;color:var(--brand-dark);font-weight:600;letter-spacing:.5px}
.nav-desk{display:flex;align-items:center;gap:6px;margin-left:auto}
.nav-link{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border-radius:10px;font-size:15px;color:var(--text);font-weight:500;transition:color .2s,background .2s}
.nav-link:hover{color:var(--brand-dark);background:#F0F5FF}
.nav-link.active{color:var(--brand-dark);background:#EAF1FF;font-weight:600}
.nav-act{display:flex;align-items:center;gap:10px}
.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;color:var(--ink);transition:background .2s,color .2s}
.icon-btn:hover{background:#F0F5FF;color:var(--brand-dark)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.menu-btn{display:none;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;color:var(--ink)}
.menu-btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round}
.mnav-mask{position:fixed;inset:0;background:rgba(11,27,58,.45);opacity:0;pointer-events:none;transition:opacity .25s;z-index:55}
.mnav-mask.show{opacity:1;pointer-events:auto}
.mnav{position:fixed;top:0;right:0;height:100%;width:min(84vw,340px);background:#fff;padding:26px 22px 32px;box-shadow:-12px 0 40px rgba(11,27,58,.16);transform:translateX(102%);transition:transform .28s ease;z-index:60;overflow-y:auto}
.mnav.open{transform:none}
.mnav-title{font-size:13px;color:var(--muted);font-weight:600;margin-bottom:6px}
.mnav a{display:flex;align-items:center;min-height:48px;padding:0 12px;border-radius:12px;font-size:16px;font-weight:500;color:var(--ink)}
.mnav a:hover{background:#F0F5FF;color:var(--brand-dark)}
.mnav .btn{width:100%;margin-top:20px}
@media(min-width:1025px){.mnav,.mnav-mask{display:none}}

/* hero */
.hero{position:relative;padding:76px 0 88px;background:#F6F9FE url('/assets/images/f7a2cbb0883a1bd3.jpg') center/cover no-repeat}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(246,249,254,.95) 0%,rgba(255,255,255,.97) 100%)}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:6fr 6fr;gap:56px;align-items:center}
.hero h1{margin-top:20px}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.7;color:var(--ink);font-weight:500;max-width:520px}
.hero-desc{margin-top:14px;max-width:560px;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px}
.trust-item{display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border-radius:999px;background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--ink);box-shadow:0 4px 14px rgba(31,94,255,.06)}
.trust-item svg{width:17px;height:17px;fill:none;stroke:var(--brand);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.hero-visual{position:relative}
.player-frame{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--card-line);box-shadow:0 22px 50px rgba(11,27,58,.16);background:#fff}
.player-frame img{width:100%;aspect-ratio:16/10;object-fit:cover}
.player-strip{display:flex;align-items:center;gap:10px;padding:12px 16px;background:#fff;border-top:1px solid var(--line)}
.player-strip span{font-size:13px;color:var(--muted)}
.player-strip .bar{flex:1;height:6px;border-radius:999px;background:#EAF1FF;overflow:hidden}
.player-strip .bar i{display:block;height:100%;width:58%;background:var(--brand);border-radius:999px}
.phone-card{position:absolute;left:-18px;bottom:-26px;width:196px;padding:16px;border-radius:18px;background:#fff;border:1px solid var(--card-line);box-shadow:0 18px 40px rgba(11,27,58,.18)}
.phone-card .pc-top{font-size:12px;font-weight:700;color:var(--litchi);letter-spacing:.5px}
.phone-card strong{display:block;margin-top:6px;font-size:15px;color:var(--ink);line-height:1.4}
.phone-card .pc-bar{margin-top:12px;height:6px;border-radius:999px;background:#EAF1FF;overflow:hidden}
.phone-card .pc-bar i{display:block;height:100%;width:62%;background:var(--litchi);border-radius:999px}
.phone-card small{display:block;margin-top:8px;font-size:12px;color:var(--muted)}

/* 权益条 */
.benefit-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:44px;background:#EAF1FF;border-radius:20px;overflow:hidden}
.benefit-item{padding:26px 24px;border-right:1px solid rgba(47,107,255,.14)}
.benefit-item:last-child{border-right:0}
.benefit-item svg{width:22px;height:22px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.benefit-item b{display:block;margin-top:10px;font-size:17px;color:var(--ink)}
.benefit-item span{display:block;margin-top:4px;font-size:14px;line-height:1.6;color:var(--muted)}

/* bento */
.bento{display:grid;grid-template-columns:repeat(6,1fr);grid-auto-rows:minmax(0,auto);gap:24px;margin-top:48px}
.bento-card{background:#fff;border:1px solid var(--card-line);border-radius:20px;padding:30px;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.bento-card svg{width:26px;height:26px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.bento-card h3{margin-top:16px}
.bento-card p{margin-top:10px;font-size:15px;color:var(--muted)}
.bento-a{grid-column:span 3;grid-row:span 2;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(160deg,#F4F8FF 0%,#FFFFFF 60%)}
.bento-b{grid-column:span 3}
.bento-c{grid-column:span 3}
.bento-d{grid-column:span 4}
.bento-e{grid-column:span 2}

/* 场景 */
.scene-wrap{display:grid;grid-template-columns:minmax(0,320px) minmax(0,1fr);gap:44px;align-items:start}
.scene-intro h2{margin-bottom:16px}
.scene-intro p{color:var(--muted);font-size:15px}
.scene-rail{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;scrollbar-width:none}
.scene-rail::-webkit-scrollbar{display:none}
.scene-card{flex:0 0 238px;scroll-snap-align:start;background:#fff;border:1px solid var(--card-line);border-radius:18px;padding:26px 24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.scene-card svg{width:24px;height:24px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.scene-card h3{margin-top:14px;font-size:19px}
.scene-card p{margin-top:8px;font-size:14px;line-height:1.65;color:var(--muted)}

/* 片单 */
.poster-rail{display:flex;gap:22px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 4px 18px;margin-top:44px;scrollbar-width:none}
.poster-rail::-webkit-scrollbar{display:none}
.poster-card{flex:0 0 212px;scroll-snap-align:start;background:#fff;border:1px solid var(--card-line);border-radius:18px;padding:12px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.poster-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.poster-img{position:relative;border-radius:12px;overflow:hidden}
.poster-img img{width:100%;aspect-ratio:2/3;object-fit:cover}
.ribbon{position:absolute;left:10px;top:10px;padding:3px 10px;border-radius:999px;background:var(--litchi);color:#fff;font-size:12px;font-weight:600}
.poster-card h3{margin-top:12px;font-size:17px}
.poster-card p{margin-top:6px;font-size:13px;line-height:1.6;color:var(--muted)}
.cat-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.chip{display:inline-flex;align-items:center;min-height:40px;padding:0 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:14px;font-weight:500;color:var(--text);transition:border-color .2s,color .2s,background .2s}
.chip:hover{border-color:var(--brand);color:var(--brand-dark);background:#F0F5FF}

/* 演示 */
.demo-stage{margin-top:44px;border:1px solid var(--card-line);border-radius:24px;padding:14px;background:#fff;box-shadow:var(--shadow)}
.demo-stage img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px}
.demo-thumbs{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:24px}
.thumb{border:1px solid var(--card-line);border-radius:16px;padding:12px;background:#fff;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.thumb:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.thumb img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px}
.thumb b{display:block;margin-top:10px;font-size:15px;color:var(--ink)}
.thumb span{display:block;font-size:13px;color:var(--muted)}

/* 步骤 */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:44px}
.step{position:relative;background:#fff;border:1px solid var(--card-line);border-radius:18px;padding:26px 24px;box-shadow:var(--shadow)}
.step::after{content:"";position:absolute;top:50%;right:-24px;width:24px;height:2px;background:var(--line)}
.step:last-child::after{display:none}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:#EAF1FF;color:var(--brand-dark);font-weight:700;font-size:16px}
.step h3{margin-top:16px;font-size:19px}
.step p{margin-top:8px;font-size:14px;line-height:1.65;color:var(--muted)}

/* 案例 */
.case{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-top:48px}
.case:first-of-type{margin-top:44px}
.case-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:20px;border:1px solid var(--card-line)}
.case-body .tag{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;background:#FFEEEF;color:#D93B40;font-size:13px;font-weight:600}
.case-body h3{margin-top:14px}
.case-body p{margin-top:12px;color:var(--muted);font-size:15px}
.case-result{display:inline-flex;align-items:center;gap:8px;margin-top:18px;padding:10px 16px;border-radius:12px;background:var(--bg);border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--brand-dark)}
.case--rev .case-media{order:2}

/* 方案 */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px;align-items:stretch}
.plan{display:flex;flex-direction:column;background:#fff;border:1px solid var(--card-line);border-radius:20px;padding:32px 28px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.plan--hot{border-color:var(--brand);box-shadow:0 18px 44px rgba(47,107,255,.18);position:relative}
.plan--hot::before{content:"最多人用";position:absolute;top:-13px;left:28px;padding:3px 12px;border-radius:999px;background:var(--brand);color:#fff;font-size:12px;font-weight:600}
.plan h3{font-size:20px}
.plan .price{margin-top:14px;font-size:38px;font-weight:700;color:var(--ink);line-height:1.1}
.plan .price small{font-size:15px;font-weight:500;color:var(--muted);margin-left:6px}
.plan .price-note{margin-top:6px;font-size:14px;color:var(--muted)}
.plan ul{margin-top:22px;display:grid;gap:12px}
.plan li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text)}
.plan li::before{content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:50%;background:#EAF1FF;box-shadow:inset 0 0 0 2px var(--brand)}
.plan .btn{margin-top:auto;width:100%}
.plan .btn{margin-top:26px}

/* 评价墙 */
.wall{columns:3;column-gap:24px;margin-top:44px}
.review{break-inside:avoid;margin-bottom:24px;background:#fff;border:1px solid var(--card-line);border-radius:18px;padding:24px;box-shadow:var(--shadow);transition:transform .25s,box-shadow .25s}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-hov)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#EAF1FF;color:var(--brand-dark);font-weight:700;font-size:16px}
.review-top b{display:block;font-size:15px;color:var(--ink)}
.review-top span{display:block;font-size:13px;color:var(--muted)}
.stars{margin-top:14px;color:var(--gold);font-size:15px;letter-spacing:2px}
.review p{margin-top:10px;font-size:15px;line-height:1.7}

/* 口碑数据 */
.stats{border-radius:24px;padding:48px 40px;background:var(--bg) radial-gradient(#D7E3F7 1px,transparent 1px);background-size:18px 18px;margin-top:44px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat b{display:block;font-size:38px;color:var(--brand-dark);line-height:1.15}
.stat span{display:block;margin-top:6px;font-size:15px;color:var(--muted)}
.stats-quote{margin-top:32px;padding-top:24px;border-top:1px solid rgba(47,107,255,.16);font-size:16px;color:var(--ink);max-width:760px}

/* 多端 */
.device-wrap{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:center;margin-top:44px}
.device-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:20px;border:1px solid var(--card-line)}
.device-list{display:grid;gap:14px}
.device-item{display:flex;gap:16px;align-items:flex-start;padding:18px 20px;background:#fff;border:1px solid var(--card-line);border-radius:16px;transition:border-color .2s,box-shadow .2s}
.device-item:hover{border-color:#BFD3FF;box-shadow:var(--shadow)}
.device-item svg{flex:0 0 auto;width:22px;height:22px;margin-top:4px;fill:none;stroke:var(--brand);stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.device-item b{font-size:16px;color:var(--ink)}
.device-item p{margin-top:2px;font-size:14px;color:var(--muted)}

/* 资讯 */
.news-list{display:grid;gap:20px;margin-top:44px}
.news-item{display:grid;grid-template-columns:300px 1fr;gap:28px;align-items:center;padding:20px;background:#fff;border:1px solid var(--card-line);border-radius:18px;transition:box-shadow .25s,transform .25s}
.news-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hov)}
.news-item img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px}
.news-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.news-meta .tag{display:inline-flex;align-items:center;min-height:26px;padding:0 10px;border-radius:999px;background:#EAF1FF;color:var(--brand-dark);font-weight:600}
.news-item h3{margin-top:10px;font-size:20px}
.news-item p{margin-top:8px;font-size:15px;color:var(--muted)}
.more-link{display:inline-flex;align-items:center;gap:6px;margin-top:26px;min-height:44px;padding:0 20px;border-radius:12px;border:1px solid var(--line);font-size:15px;font-weight:600;color:var(--brand-dark);background:#fff;transition:border-color .2s,background .2s}
.more-link:hover{border-color:var(--brand);background:#F0F5FF}

/* 榜单 */
.rank-wrap{margin-top:44px;display:flex;gap:20px;overflow-x:auto;padding-bottom:16px;scroll-snap-type:x proximity;scrollbar-width:none}
.rank-wrap::-webkit-scrollbar{display:none}
.rank-list{flex:1 1 auto;min-width:520px;display:grid;gap:10px}
.rank-item{display:grid;grid-template-columns:52px 56px 1fr 120px;gap:16px;align-items:center;padding:12px 16px;background:#fff;border:1px solid var(--card-line);border-radius:14px;transition:border-color .2s,box-shadow .2s}
.rank-item:hover{border-color:#BFD3FF;box-shadow:var(--shadow)}
.rank-no{font-size:18px;font-weight:700;color:#A9BCDB}
.rank-item:nth-child(1) .rank-no,.rank-item:nth-child(2) .rank-no,.rank-item:nth-child(3) .rank-no{color:var(--litchi)}
.rank-item img{width:56px;height:56px;object-fit:cover;border-radius:10px}
.rank-title b{display:block;font-size:15px;color:var(--ink)}
.rank-title span{font-size:13px;color:var(--muted)}
.heat{display:flex;align-items:center;gap:8px}
.heat .bar{flex:1;height:6px;border-radius:999px;background:#EAF1FF;overflow:hidden}
.heat .bar i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,#7FA8FF,#2F6BFF)}
.heat small{font-size:12px;color:var(--muted);font-weight:600}

/* FAQ */
.faq{margin-top:40px;border-top:1px solid var(--line);max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;min-height:64px;padding:18px 0;text-align:left;font-size:17px;font-weight:600;color:var(--ink)}
.faq-q i{flex:0 0 auto;width:26px;height:26px;border-radius:50%;background:#EAF1FF;position:relative;transition:transform .25s}
.faq-q i::before,.faq-q i::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand-dark);border-radius:2px;transform:translate(-50%,-50%)}
.faq-q i::before{width:12px;height:2px}
.faq-q i::after{width:2px;height:12px;transition:opacity .25s}
.faq-item.open .faq-q i{transform:rotate(180deg)}
.faq-item.open .faq-q i::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.75;color:var(--muted);max-width:720px}

/* CTA */
.cta-band{margin-top:0;background:#EAF1FF;border-radius:28px;padding:56px 48px;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;background:rgba(47,107,255,.08)}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px}
.cta-inner h2{max-width:640px}
.cta-inner p{margin-top:12px;color:var(--muted);max-width:600px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* footer */
.site-footer{background:#0B1B3A;color:#C6D3E8;padding:64px 0 28px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:#8FB4FF}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.75;color:#9DB0CC;max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px}
.footer-col a{display:flex;align-items:center;min-height:40px;font-size:14px;color:#9DB0CC;transition:color .2s}
.footer-col a:hover{color:#fff}
.footer-bottom{margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:#8B9FBD}

/* 响应式 */
@media (max-width:1024px){
  .section{padding:72px 0}
  .nav-desk{display:none}
  .menu-btn{display:inline-flex}
  .hero{padding:56px 0 68px}
  .hero-grid{grid-template-columns:1fr;gap:52px}
  .hero-visual{max-width:620px}
  .benefit-strip{grid-template-columns:repeat(2,1fr)}
  .benefit-item:nth-child(2n){border-right:0}
  .benefit-item:nth-child(-n+2){border-bottom:1px solid rgba(47,107,255,.14)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-a,.bento-b,.bento-c,.bento-d,.bento-e{grid-column:span 1;grid-row:span 1}
  .scene-wrap{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .case,.case--rev{grid-template-columns:1fr;gap:28px}
  .case--rev .case-media{order:0}
  .plans{grid-template-columns:1fr;gap:20px}
  .plan--hot{transform:none}
  .wall{columns:2}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .device-wrap{grid-template-columns:1fr;gap:32px}
  .news-item{grid-template-columns:220px 1fr;gap:22px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:72px}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .nav-wrap{min-height:66px;gap:16px}
  .logo-text strong{font-size:16px}
  .hero{padding:44px 0 56px}
  .hero-sub{font-size:17px}
  .phone-card{left:auto;right:8px;bottom:-20px;width:172px;padding:14px}
  .benefit-strip{grid-template-columns:1fr;border-radius:16px}
  .benefit-item{border-right:0;border-bottom:1px solid rgba(47,107,255,.14)}
  .benefit-item:last-child{border-bottom:0}
  .bento{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .wall{columns:1}
  .stats{padding:32px 24px}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stat b{font-size:30px}
  .news-item{grid-template-columns:1fr;gap:14px}
  .rank-list{min-width:440px}
  .rank-item{grid-template-columns:40px 48px 1fr;gap:12px}
  .rank-item img{width:48px;height:48px}
  .heat{display:none}
  .cta-band{padding:36px 24px;border-radius:20px}
  .cta-inner{gap:22px}
  .footer-grid{grid-template-columns:1fr}
  .site-footer{margin-top:56px;padding-top:48px}
  .demo-thumbs{grid-template-columns:1fr}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-actions .btn{flex:1 1 100%}
  .trust-item{font-size:13px;padding:0 12px}
  .poster-card{flex:0 0 178px}
  .scene-card{flex:0 0 78vw}
  .rank-list{min-width:340px}
  .rank-item{grid-template-columns:34px 44px 1fr;padding:10px 12px}
  .rank-item img{width:44px;height:44px}
  .faq-q{font-size:16px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: index */
*,*::before,*::after{box-sizing:border-box}
:root{
  --brand:#3A6EA5;--brand-deep:#2B5484;--brand-soft:#E8F0F9;
  --accent:#D9536B;--leaf:#4E9A6B;
  --bg:#F7F9FC;--soft:#EFF4FA;--card:#fff;
  --ink:#1B2430;--muted:#56616F;--weak:#8A94A2;--line:#E3E9F1;
  --r:14px;--r-lg:18px;
  --sh:0 6px 20px rgba(27,36,48,.06);
  --sh-h:0 12px 28px rgba(27,36,48,.10);
}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"PingFang SC","HarmonyOS Sans","Microsoft YaHei",system-ui,sans-serif;font-size:15px;line-height:1.75;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4,p,figure,ul{margin:0}
ul{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img{display:block;width:100%;height:100%;object-fit:cover}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
svg{display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.sec{padding:96px 0}
.sec-soft{background:var(--soft)}
.sec-head{max-width:740px;margin-bottom:40px}
.sec-head h2{font-size:clamp(24px,3vw,32px);line-height:1.35;font-weight:600;letter-spacing:-.01em}
.sec-head p{margin-top:12px;color:var(--muted);font-size:15px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--brand-deep);background:var(--brand-soft);padding:5px 13px;border-radius:999px;margin-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:10px;border:1px solid transparent;font-size:15px;font-weight:500;transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease}
.btn-primary{background:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-deep);transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-outline:hover{background:var(--brand-soft)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.chip{display:inline-block;font-size:12px;line-height:1.7;padding:1px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand-deep);white-space:nowrap}
.ph{overflow:hidden;border-radius:12px;background:var(--soft)}
.ph img{transition:transform .3s ease}
.card{background:var(--card);border:1px solid #E9EEF5;border-radius:var(--r);box-shadow:var(--sh);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(58,110,165,.35)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-size:14px;font-weight:500}
.link-arrow svg{width:16px;height:16px;transition:transform .2s ease}
.link-arrow:hover svg{transform:translateX(3px)}
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  .card,.btn,.ph img{transition:none}
}

/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.hdr.scrolled{box-shadow:0 6px 18px rgba(27,36,48,.07)}
.hdr-in{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo svg{width:32px;height:32px}
.logo-txt{display:flex;flex-direction:column;line-height:1.15}
.logo-txt b{font-size:16px;font-weight:700;letter-spacing:.01em}
.logo-txt i{font-size:11px;font-style:normal;color:var(--brand);letter-spacing:.1em}
.nav{display:flex;gap:26px}
.nav a{position:relative;font-size:14.5px;color:var(--muted);padding:22px 0;transition:color .2s ease}
.nav a:hover{color:var(--brand-deep)}
.nav a.active{color:var(--brand);font-weight:600}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;background:var(--brand)}
.hdr-right{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;color:var(--muted);transition:background .2s ease,color .2s ease}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand-deep)}
.icon-btn svg{width:20px;height:20px}
.burger{display:none;width:44px;height:44px;border-radius:10px;place-items:center;color:var(--ink)}
.burger svg{width:22px;height:22px}
.hdr-search{border-top:1px solid var(--line);background:#fff;padding:12px 0}
.hdr-search .bar{display:flex;gap:10px}
.hdr-search input{flex:1;min-width:0;height:44px;border:1px solid #DDE5EF;border-radius:10px;padding:0 14px;font-size:15px;background:#fff;color:var(--ink)}
.hdr-search input:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 2px rgba(58,110,165,.18)}

/* drawer */
.drawer{position:fixed;inset:0;z-index:90;background:#fff;display:none;flex-direction:column;padding:0 20px 28px;overflow-y:auto}
.drawer.open{display:flex}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:68px;border-bottom:1px solid var(--line)}
.drawer nav{display:grid;margin:12px 0 20px}
.drawer nav a{height:52px;display:flex;align-items:center;font-size:17px;border-bottom:1px solid var(--line);color:var(--ink)}
.drawer nav a.active{color:var(--brand);font-weight:600}
.drawer input{height:44px;border:1px solid #DDE5EF;border-radius:10px;padding:0 14px;font-size:15px;width:100%;margin-bottom:14px}
.drawer .btn{width:100%}
.drawer-note{margin-top:16px;font-size:12.5px;color:var(--weak)}

/* hero */
.hero{position:relative;padding:64px 0 96px;background:linear-gradient(180deg,#FFFFFF 0%,#F7F9FC 100%);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
.hero-sub{margin-top:14px;font-size:17px;font-weight:500;color:var(--brand-deep)}
.hero-p{margin-top:16px;color:var(--muted);max-width:560px}
.search-bar{display:flex;align-items:center;gap:10px;margin-top:28px;max-width:580px;background:#fff;border:1px solid #DDE5EF;border-radius:12px;padding:8px;box-shadow:var(--sh)}
.search-bar input{flex:1;min-width:0;height:44px;border:0;background:transparent;padding:0 12px;font-size:15px;color:var(--ink)}
.search-bar input::placeholder{color:var(--weak)}
.search-bar input:focus{outline:none}
.trust{display:flex;flex-wrap:wrap;gap:22px;margin-top:24px;font-size:13px;color:var(--muted)}
.trust span{display:inline-flex;align-items:center;gap:7px}
.trust i{width:7px;height:7px;border-radius:50%;background:var(--leaf);display:inline-block}
.hero-media{position:relative}
.hero-media .ph{aspect-ratio:16/10;border-radius:16px;border:1px solid #E9EEF5;box-shadow:0 18px 44px rgba(27,36,48,.16)}
.play{position:absolute;right:18px;bottom:18px;width:56px;height:56px;border-radius:50%;background:rgba(255,255,255,.86);display:grid;place-items:center;color:var(--brand-deep);box-shadow:0 8px 20px rgba(27,36,48,.18);transition:background .2s ease,transform .2s ease}
.play:hover{background:#fff;transform:scale(1.05)}
.play svg{width:22px;height:22px;fill:currentColor}
.hero-now{position:relative;margin:-20px 28px 0 22px;display:flex;align-items:center;gap:10px;background:#fff;border:1px solid #E9EEF5;border-radius:12px;padding:10px 16px;box-shadow:var(--sh);font-size:13px;color:var(--muted)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px rgba(217,83,107,.16);flex-shrink:0}

/* filter bar */
.filter-bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;background:#fff;border:1px solid #E9EEF5;border-radius:var(--r);box-shadow:var(--sh);padding:16px 22px}
.filter-bar h2{font-size:16px;font-weight:600;white-space:nowrap}
.filter-bar select{height:38px;border:1px solid #DDE5EF;border-radius:999px;padding:0 14px;font-size:13px;color:var(--muted);background:#fff}
.filter-bar select:focus{border-color:var(--brand);outline:none}
.filter-bar .btn{margin-left:auto}

/* rank */
.rank-card{display:grid;grid-template-columns:1fr 320px;gap:32px;background:#fff;border:1px solid #E9EEF5;border-radius:var(--r-lg);box-shadow:var(--sh);padding:28px}
.rank-list{display:grid;grid-template-columns:1fr 1fr;gap:0 28px}
.rank-item{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.rank-item .no{width:22px;flex-shrink:0;font-family:"Inter",system-ui,sans-serif;font-size:13px;font-weight:700;color:var(--weak)}
.rank-thumb{width:64px;height:48px;flex-shrink:0;border-radius:8px}
.rank-info{min-width:0;flex:1}
.rank-info h3{font-size:14px;font-weight:600;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.rank-tags{display:flex;align-items:center;gap:6px;margin-top:2px;font-size:12px;color:var(--weak)}
.rank-dur{font-family:"Inter",system-ui,sans-serif;font-size:12px;color:var(--weak)}
.promo .ph{aspect-ratio:4/5;border-radius:12px}
.promo h3{margin:16px 0 8px;font-size:17px;font-weight:600}
.promo p{font-size:13.5px;color:var(--muted)}
.promo .link-arrow{margin-top:14px}

/* features */
.feature-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:24px}
.feat{padding:28px;display:flex;flex-direction:column}
.feat-big{grid-row:span 2;justify-content:flex-start;min-height:320px}
.feat-icon{width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;margin-bottom:18px}
.feat-icon svg{width:22px;height:22px}
.feat h3{font-size:18px;font-weight:600;margin-bottom:8px}
.feat p{font-size:14px;color:var(--muted)}
.feat .arrow{margin-top:auto;display:flex;justify-content:flex-end;color:var(--brand);padding-top:18px}
.feat .arrow svg{width:20px;height:20px;transition:transform .2s ease}
.feat:hover .arrow svg{transform:translateX(3px)}

/* icon row */
.icon-row{display:grid;grid-template-columns:repeat(4,1fr)}
.icon-item{padding:0 28px;border-left:1px solid var(--line)}
.icon-item:first-child{border-left:0;padding-left:0}
.icon-item svg{width:26px;height:26px;color:var(--brand);margin-bottom:14px}
.icon-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
.icon-item p{font-size:13.5px;color:var(--muted)}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.scene{overflow:hidden}
.scene .ph{aspect-ratio:3/2;border-radius:0}
.scene-body{padding:20px 22px 24px}
.scene-body h3{font-size:17px;font-weight:600;margin-bottom:8px}
.scene-body p{font-size:13.5px;color:var(--muted);margin-bottom:12px}
.scene:nth-child(2){margin-top:34px}
.scene:nth-child(3){margin-top:14px}

/* demo */
.demo-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:44px;align-items:center}
.device{border:1px solid #E3E9F1;border-radius:24px;background:#fff;padding:14px;box-shadow:0 18px 44px rgba(27,36,48,.12)}
.device .ph{aspect-ratio:16/9;border-radius:14px}
.demo-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.demo-tab{font-size:13px;padding:7px 15px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);transition:background .2s ease,color .2s ease,border-color .2s ease}
.demo-tab:hover{border-color:var(--brand)}
.demo-tab.on{background:var(--brand-soft);color:var(--brand-deep);border-color:transparent;font-weight:600}
.demo-points li{display:flex;gap:12px;padding:16px 0;border-bottom:1px solid var(--line);font-size:14px;color:var(--muted)}
.demo-points li:last-child{border-bottom:0}
.demo-points svg{width:18px;height:18px;color:var(--leaf);flex-shrink:0;margin-top:4px}
.demo-points b{display:block;color:var(--ink);font-weight:600;margin-bottom:2px}

/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic{overflow:hidden}
.topic .ph{aspect-ratio:16/9;border-radius:0}
.topic:hover .ph img{transform:scale(1.03)}
.topic-body{padding:20px 22px 22px}
.topic-body h3{font-size:16.5px;font-weight:600;margin-bottom:8px}
.topic-body p{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.topic-meta{display:flex;justify-content:space-between;gap:12px;font-size:12.5px;color:var(--weak);border-top:1px solid var(--line);padding-top:12px}

/* list style */
.list-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px}
.list-item{display:flex;align-items:flex-start;gap:16px;padding:22px 0;border-bottom:1px solid var(--line)}
.list-item .no{font-family:"Inter",system-ui,sans-serif;font-size:14px;font-weight:700;color:var(--brand);padding-top:2px}
.list-item h3{font-size:16px;font-weight:600;margin-bottom:4px}
.list-item p{font-size:13.5px;color:var(--muted)}
.list-item .tags{margin-left:auto;display:flex;gap:6px;flex-shrink:0;padding-top:3px}

/* price */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.price{padding:28px;position:relative;display:flex;flex-direction:column}
.price.hot{border:2px solid var(--brand);box-shadow:0 14px 32px rgba(58,110,165,.16)}
.price .badge{position:absolute;top:-13px;left:26px;background:var(--brand);color:#fff;font-size:12px;line-height:1.7;padding:1px 12px;border-radius:999px}
.price h3{font-size:16px;font-weight:600;margin-bottom:6px}
.price .num{font-family:"Inter",system-ui,sans-serif;font-size:36px;font-weight:700;line-height:1.15;letter-spacing:-.02em}
.price .num small{font-size:14px;font-weight:500;color:var(--muted);margin-left:4px}
.price ul{margin:18px 0 24px;display:grid;gap:10px;font-size:13.5px;color:var(--muted)}
.price li{display:flex;gap:8px;align-items:flex-start}
.price li svg{width:16px;height:16px;color:var(--leaf);flex-shrink:0;margin-top:3px}
.price .btn{width:100%;margin-top:auto}
.price:hover .btn-outline{background:var(--brand);color:#fff;border-color:var(--brand)}

/* reviews */
.review-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.review-col{display:grid;gap:24px;align-content:start}
.review-col:nth-child(2){margin-top:30px}
.review{background:#fff;border-radius:var(--r);box-shadow:0 4px 14px rgba(27,36,48,.05);padding:20px 22px;transition:transform .2s ease,box-shadow .2s ease}
.review:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(27,36,48,.09)}
.review-head{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);display:grid;place-items:center;font-size:14px;font-weight:600;flex-shrink:0}
.review-head b{font-size:14px;font-weight:600;display:block;line-height:1.4}
.stars{display:flex;gap:2px}
.stars svg{width:12px;height:12px;fill:var(--accent)}
.review p{font-size:13.5px;color:var(--muted)}

/* stats */
.stats{background:var(--brand-soft);border-radius:var(--r-lg);padding:52px 32px}
.stats h2{font-size:20px;font-weight:600;text-align:center;color:var(--brand-deep);margin-bottom:34px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat b{display:block;font-family:"Inter",system-ui,sans-serif;font-size:clamp(28px,3.4vw,40px);font-weight:700;line-height:1.1;letter-spacing:-.02em;color:var(--brand-deep)}
.stat span{display:block;margin-top:8px;font-size:13px;color:var(--muted)}

/* faq */
.faq-wrap{max-width:800px;margin:0 auto}
.faq-item{background:#fff;border:1px solid #E9EEF5;border-radius:12px;margin-bottom:12px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item:hover{box-shadow:var(--sh)}
.faq-q{width:100%;display:flex;align-items:center;gap:12px;text-align:left;padding:16px 20px;font-size:15px;font-weight:500;transition:color .2s ease}
.faq-item.open .faq-q{color:var(--brand-deep)}
.faq-q::before{content:"";width:3px;align-self:stretch;border-radius:2px;background:transparent;flex-shrink:0}
.faq-item.open .faq-q::before{background:var(--brand)}
.sign{margin-left:auto;width:20px;height:20px;position:relative;flex-shrink:0}
.sign::before,.sign::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .25s ease}
.sign::before{left:0;right:0;top:9px;height:2px}
.sign::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.open .sign::after{transform:rotate(90deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a p{padding:0 20px 18px 35px;font-size:14px;color:var(--muted)}

/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news{overflow:hidden}
.news .ph{aspect-ratio:16/9;border-radius:0}
.news-body{padding:16px 20px 20px}
.news h3{font-size:15.5px;font-weight:600;line-height:1.5;margin:10px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news:hover h3{color:var(--brand);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.news time{font-size:12.5px;color:var(--weak)}

/* cta */
.cta-wrap{padding:0 0 112px}
.cta-box{position:relative;overflow:hidden;border-radius:24px;background:linear-gradient(135deg,#EFF5FC 0%,#E2EEFA 100%);padding:56px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.cta-box::after{content:"";position:absolute;inset:0;background:url(/assets/images/2fbcf75f3101e3fa.jpg) center/cover no-repeat;opacity:.12;pointer-events:none}
.cta-inner{position:relative;z-index:1}
.cta-inner h2{font-size:clamp(24px,3vw,34px);font-weight:700;margin-bottom:12px}
.cta-inner p{color:var(--muted);max-width:520px;margin-bottom:24px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap}
.qr{position:relative;z-index:1;width:132px;text-align:center}
.qr-box{width:132px;height:132px;border-radius:14px;background:#fff;border:1px solid var(--line);display:grid;place-items:center}
.qr-box svg{width:84px;height:84px}
.qr small{display:block;margin-top:10px;font-size:12.5px;color:var(--muted)}

/* footer */
.ftr{background:#F1F5FA;padding-top:64px}
.ftr-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.ftr h3{font-size:14px;font-weight:600;margin-bottom:14px}
.ftr ul{display:grid;gap:10px}
.ftr a{font-size:13.5px;color:var(--muted);transition:color .2s ease}
.ftr a:hover{color:var(--brand)}
.ftr .desc{margin-top:14px;font-size:13.5px;color:var(--muted);line-height:1.8;max-width:320px}
.ftr-bottom{border-top:1px solid #DCE6F2;padding:20px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:var(--weak)}

@media (max-width:1024px){
  .container{padding:0 24px}
  .sec{padding:72px 0}
  .hero{padding:48px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .rank-card{grid-template-columns:1fr;gap:24px}
  .promo{display:grid;grid-template-columns:200px 1fr;gap:20px;align-items:center}
  .promo .ph{aspect-ratio:4/5;margin:0}
  .feature-grid{grid-template-columns:1fr}
  .feat-big{grid-row:auto;min-height:0}
  .icon-row{grid-template-columns:repeat(2,1fr);gap:36px 0}
  .icon-item:nth-child(3){border-left:0;padding-left:0}
  .demo-grid{grid-template-columns:1fr;gap:36px}
  .topic-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-box{padding:40px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .sec{padding:60px 0}
  .nav{display:none}
  .burger{display:grid}
  .icon-btn{display:none}
  .rank-list{grid-template-columns:1fr}
  .promo{grid-template-columns:1fr}
  .promo .ph{aspect-ratio:16/9}
  .topic-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
  .price-grid{grid-template-columns:1fr}
  .list-grid{grid-template-columns:1fr;gap:0}
  .review-grid{grid-template-columns:1fr}
  .review-col:nth-child(2){margin-top:0}
  .scene-grid{grid-template-columns:1fr}
  .scene:nth-child(2),.scene:nth-child(3){margin-top:0}
  .device{border:0;padding:0;box-shadow:none;border-radius:0}
  .device .ph{border-radius:14px}
  .cta-box{grid-template-columns:1fr;padding:32px 24px;gap:26px}
  .qr{margin:0 auto}
  .ftr{padding-top:48px}
  .ftr-grid{grid-template-columns:1fr 1fr}
  .ftr .desc{max-width:none}
  .hero-now{margin:-16px 14px 0}
  .filter-bar .btn{margin-left:0;width:100%}
}
@media (max-width:520px){
  .icon-row{grid-template-columns:1fr;gap:0}
  .icon-item{padding:20px 0 0;border-left:0;border-top:1px solid var(--line);margin-top:20px}
  .icon-item:first-child{border-top:0;padding-top:0;margin-top:0}
  .search-bar{flex-wrap:wrap}
  .search-bar input{width:100%;flex:0 0 100%}
  .search-bar .btn{width:100%}
  .search-bar .chip{align-self:flex-start}
  .list-item{flex-wrap:wrap}
  .list-item .tags{margin-left:0}
  .stats-grid{grid-template-columns:1fr 1fr}
  .stats{padding:36px 20px}
  .ftr-grid{grid-template-columns:1fr}
  .hdr-cta{display:none}
  .rank-card{padding:20px}
}