/* roulang page: index */
:root{
  --blue:#2B5FD9;
  --blue-d:#1B3E8F;
  --red:#E85C6B;
  --red-d:#D94B5A;
  --fog:#EEF3FC;
  --bg:#F7F9FC;
  --ink:#1D2433;
  --ink2:#5A6478;
  --ink3:#8A93A6;
  --line:#E3E9F2;
  --green:#2BA471;
  --r-card:14px;
  --r-img:12px;
  --sh:0 6px 18px rgba(31,52,94,.08);
  --sh-h:0 12px 28px rgba(31,52,94,.14);
  --ease:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.35}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:6px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important;scroll-behavior:auto!important}}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section--white{background:#fff}
.section--fog{background:var(--fog)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.sec-head h2{font-size:28px}
.sec-head p{font-size:14px;color:var(--ink2);margin-top:6px;max-width:640px}
.sec-more{font-size:14px;color:var(--blue);white-space:nowrap;transition:color var(--ease)}
.sec-more:hover{color:var(--red)}
.eyebrow{display:inline-block;font-size:13px;color:var(--red);letter-spacing:.08em;margin-bottom:8px}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow var(--ease)}
.site-header.is-scrolled{box-shadow:0 4px 14px rgba(31,52,94,.08)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:none}
.logo-mark{width:36px;height:36px;border-radius:10px;background:var(--red);display:grid;place-items:center;color:#fff;flex:none}
.logo-txt{display:flex;flex-direction:column;line-height:1.12}
.logo-txt .l1{font-size:16px;font-weight:600;color:var(--blue-d)}
.logo-txt .l2{font-size:11px;color:var(--ink3);letter-spacing:.18em}
.nav-list{display:flex;align-items:center;gap:28px;flex:1}
.nav-list a{position:relative;font-size:15px;color:var(--ink2);padding:6px 0;transition:color var(--ease)}
.nav-list a:hover{color:var(--blue)}
.nav-list a.is-active{color:var(--ink);font-weight:600}
.nav-list a.is-active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--red);border-radius:2px}
.nav-right{display:flex;align-items:center;gap:12px;flex:none}
.icon-btn{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;color:var(--ink2);border:1px solid var(--line);transition:all var(--ease)}
.icon-btn:hover{color:var(--blue);border-color:#c6d6f2;background:var(--fog)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:44px;padding:0 22px;border-radius:10px;font-size:15px;font-weight:500;transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease)}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:var(--red-d);transform:translateY(-2px);box-shadow:0 8px 20px rgba(232,92,107,.28)}
.btn-ghost{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.btn-ghost:hover{background:var(--fog)}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.burger{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);align-items:center;justify-content:center;color:var(--ink2)}
.drawer{position:fixed;inset:0;z-index:80;background:#fff;transform:translateY(-100%);transition:transform 240ms ease;display:flex;flex-direction:column;padding:20px 24px 28px;overflow-y:auto}
.drawer.open{transform:translateY(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer nav a{display:flex;align-items:center;height:52px;border-bottom:1px solid var(--line);font-size:15px;color:var(--ink)}
.drawer nav a:first-child{border-top:1px solid var(--line)}
.drawer-tags{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 auto}
.drawer .btn{width:100%;margin-top:20px}

/* hero */
.hero{position:relative;overflow:hidden;background:var(--fog);padding:64px 0 56px}
.hero-bg{position:absolute;inset:0;background:url("/assets/images/f53121acc18cddd4.jpg") center/cover no-repeat;opacity:.3}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,#F7F9FC 0%,rgba(247,249,252,.95) 44%,rgba(238,243,252,.72) 100%);pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--blue);background:#fff;border:1px solid #d5e1f7;border-radius:999px;padding:5px 14px}
.dot{width:6px;height:6px;border-radius:50%;background:var(--green);flex:none}
.hero h1{font-size:clamp(28px,3.4vw,44px);line-height:1.25;margin:18px 0 16px;color:var(--blue-d)}
.hero-sub{font-size:16px;color:var(--ink2);max-width:520px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-media{position:relative;border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);aspect-ratio:16/9;background:var(--fog)}
.hero-media img{width:100%;height:100%;object-fit:cover}
.play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:64px;height:64px;border-radius:50%;background:rgba(232,92,107,.94);color:#fff;display:grid;place-items:center;font-size:16px;padding-left:4px;box-shadow:0 8px 24px rgba(232,92,107,.38);transition:transform var(--ease),background var(--ease)}
.play-btn:hover{background:var(--red-d);transform:translate(-50%,-50%) scale(1.06)}
.searchbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 8px 8px 22px;box-shadow:var(--sh);margin-top:34px}
.searchbar input{flex:1;min-width:160px;border:0;outline:none;background:transparent;font-size:15px;padding:10px 0;color:var(--ink)}
.searchbar input::placeholder{color:var(--ink3)}
.hotwords{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}
.hotwords .tip{font-size:13px;color:var(--ink3)}
.hot-pill{font-size:13px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 13px;transition:all var(--ease)}
.hot-pill:hover{color:var(--blue);border-color:#c6d6f2;background:var(--fog)}
.intro-bar{position:relative;z-index:2;margin-top:34px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px 26px;box-shadow:var(--sh)}
.intro-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.intro-tags span{font-size:12px;color:var(--blue);background:var(--fog);border-radius:999px;padding:4px 12px}
.intro-bar p{font-size:15px;line-height:1.85;color:var(--ink2)}

/* category */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.cat-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh);display:flex;flex-direction:column;gap:8px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.cat-card:hover{transform:translateY(-4px);box-shadow:var(--sh-h);border-color:#cdd9ee}
.cat-ico{width:38px;height:38px;border-radius:10px;background:var(--fog);display:grid;place-items:center;color:var(--blue);transition:background var(--ease),color var(--ease)}
.cat-card:hover .cat-ico{background:#FCE9EC;color:var(--red)}
.cat-card h3{font-size:18px}
.cat-desc{font-size:13px;color:var(--ink2);line-height:1.6}
.cat-meta{font-size:12px;color:var(--ink3);margin-top:auto}
.cat-arrow{position:absolute;right:20px;bottom:18px;color:var(--ink3);transition:transform var(--ease),color var(--ease)}
.cat-card:hover .cat-arrow{transform:translateX(3px);color:var(--red)}
.cat-main{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;justify-content:flex-end}
.cat-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cat-main::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(27,62,143,0) 30%,rgba(20,40,90,.86) 100%)}
.cat-main-body{position:relative;z-index:2;padding:26px;color:#fff}
.cat-main-body h3{font-size:22px;color:#fff}
.cat-main-body .cat-desc,.cat-main-body .cat-meta{color:rgba(255,255,255,.82)}
.cat-main-body .cat-ico{background:rgba(255,255,255,.18);color:#fff;margin-bottom:10px}
.cat-main:hover .cat-ico{background:var(--red);color:#fff}

/* ranking */
.rank-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
.rank-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--line)}
.rank-no{font-size:18px;font-weight:600;color:var(--red);font-variant-numeric:tabular-nums;width:28px;flex:none}
.rank-body{flex:1;min-width:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.rank-title{font-size:15px;color:var(--ink);transition:color var(--ease)}
.rank-title:hover{color:var(--blue)}
.rank-tag{font-size:12px;color:var(--ink2);background:var(--fog);border-radius:999px;padding:2px 10px}
.rank-time{font-size:13px;color:var(--ink3);font-variant-numeric:tabular-nums;flex:none}
.rank-flag{font-size:12px;color:var(--green);flex:none}

/* stats */
.stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stat{padding:32px 24px;border-left:1px solid var(--line)}
.stat:first-child{border-left:0}
.stat strong{display:block;font-size:38px;line-height:1.1;color:var(--blue-d);font-weight:600;font-variant-numeric:tabular-nums}
.stat span{display:block;font-size:13px;color:var(--ink2);margin-top:6px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.step{position:relative;padding-right:8px}
.step::after{content:"";position:absolute;top:22px;left:56px;right:-12px;border-top:1px dashed #bfcfea}
.step:last-child::after{display:none}
.step-no{width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid #cfdcf3;color:var(--red);display:grid;place-items:center;font-size:16px;font-weight:600;margin-bottom:14px;font-variant-numeric:tabular-nums}
.step h3{font-size:18px;margin-bottom:6px}
.step p{font-size:14px;color:var(--ink2)}

/* poster wall */
.tabs{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.tab{font-size:14px;padding:8px 18px;border-radius:999px;background:var(--fog);color:var(--ink2);border:1px solid transparent;transition:all var(--ease)}
.tab:hover{color:var(--blue)}
.tab.is-active{background:var(--red);color:#fff}
.poster-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.poster-card{cursor:pointer}
.poster-thumb{position:relative;border-radius:var(--r-img);overflow:hidden;aspect-ratio:3/4;background:var(--fog)}
.poster-card.wide{grid-column:span 2}
.poster-card.wide .poster-thumb{aspect-ratio:16/9}
.poster-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.poster-play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) scale(.85);width:52px;height:52px;border-radius:50%;background:rgba(232,92,107,.95);color:#fff;display:grid;place-items:center;font-size:14px;padding-left:3px;opacity:0;transition:opacity var(--ease),transform var(--ease)}
.poster-card:hover .poster-thumb img{transform:scale(1.03)}
.poster-card:hover .poster-thumb::after{content:"";position:absolute;inset:0;background:rgba(20,30,55,.2)}
.poster-card:hover .poster-play{opacity:1;transform:translate(-50%,-50%) scale(1)}
.poster-card:hover{transform:translateY(-4px);transition:transform var(--ease)}
.poster-card h3{font-size:16px;margin-top:12px}
.poster-meta{font-size:13px;color:var(--ink3);margin-top:2px}

/* updates */
.upd-list{border-top:1px solid var(--line)}
.upd-row{display:flex;align-items:center;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}
.upd-thumb{width:120px;height:75px;border-radius:10px;overflow:hidden;flex:none;background:var(--fog)}
.upd-thumb img{width:100%;height:100%;object-fit:cover}
.upd-body{flex:1;min-width:0}
.upd-body h3{font-size:16px;margin-bottom:6px}
.upd-tags{display:flex;flex-wrap:wrap;gap:8px}
.upd-tags span{font-size:12px;color:var(--ink2);background:#fff;border:1px solid var(--line);border-radius:999px;padding:2px 10px}
.upd-right{display:flex;align-items:center;gap:16px;flex:none}
.upd-time{font-size:13px;color:var(--ink3);font-variant-numeric:tabular-nums}
.upd-go{color:var(--blue);font-size:14px;transition:transform var(--ease),color var(--ease)}
.upd-row:hover .upd-go{transform:translateX(3px);color:var(--red)}

/* topics */
.topic-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.topic-card{position:relative}
.topic-fig{border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;background:var(--fog);box-shadow:var(--sh)}
.topic-fig img{width:100%;height:100%;object-fit:cover;transition:transform 320ms ease}
.topic-card:hover .topic-fig img{transform:scale(1.04)}
.topic-bar{position:relative;margin:-24px 18px 0;background:#fff;border:1px solid var(--line);border-radius:12px;padding:16px 18px;box-shadow:var(--sh);transition:box-shadow var(--ease)}
.topic-card:hover .topic-bar{box-shadow:var(--sh-h)}
.topic-bar h3{font-size:17px;margin-bottom:4px}
.topic-bar p{font-size:13px;color:var(--ink2);line-height:1.6}
.topic-text{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;box-shadow:var(--sh);display:flex;flex-direction:column;justify-content:center;gap:10px}
.topic-text h3{font-size:19px}
.topic-text p{font-size:14px;color:var(--ink2)}
.topic-text .sec-more{margin-top:6px}

/* routes */
.route-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.route-fig{border-radius:var(--r-card);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh);background:var(--fog)}
.route-fig img{width:100%;height:100%;object-fit:cover}
.spec-row{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}
.spec-row:first-of-type{border-top:1px solid var(--line)}
.spec-label{font-size:14px;color:var(--ink2);flex:none}
.spec-value{font-size:15px;font-weight:600;color:var(--ink);text-align:right}

/* news */
.news-wrap{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start}
.news-lead .news-fig{border-radius:var(--r-card);overflow:hidden;aspect-ratio:16/10;box-shadow:var(--sh);background:var(--fog);margin-bottom:16px}
.news-lead img{width:100%;height:100%;object-fit:cover}
.news-lead h3{font-size:19px;margin-bottom:8px}
.news-lead p{font-size:14px;color:var(--ink2)}
.news-list li a{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}
.news-list h3{font-size:15px;line-height:1.6;color:var(--ink);transition:color var(--ease)}
.news-list li a:hover h3{color:var(--blue)}
.news-list time{font-size:13px;color:var(--ink3);flex:none;font-variant-numeric:tabular-nums}
.news-list .arrow{color:var(--ink3);flex:none}

/* feedback */
.quote-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.quote{position:relative;background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh)}
.quote p{font-size:14.5px;color:var(--ink2);line-height:1.8}
.quote footer{margin-top:14px;font-size:12px;color:var(--ink3)}

/* partners */
.partner-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:16px}
.partner{height:64px;border:1px solid var(--line);border-radius:12px;background:#fff;display:grid;place-items:center;font-size:13px;color:var(--ink3);filter:grayscale(1);transition:all var(--ease)}
.partner:hover{filter:grayscale(0);color:var(--blue-d);border-color:#c6d6f2;box-shadow:var(--sh)}
.partner-note{font-size:13px;color:var(--ink3);margin-top:16px}

/* faq */
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;align-items:start}
.faq-col details{border-bottom:1px solid var(--line)}
.faq-col summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0;font-size:15.5px;font-weight:600;cursor:pointer;list-style:none}
.faq-col summary::-webkit-details-marker{display:none}
.faq-col summary::after{content:"+";color:var(--red);font-size:18px;line-height:1;flex:none}
.faq-col details[open] summary::after{content:"−"}
.faq-col details[open] summary{color:var(--blue)}
.faq-col .faq-a{background:var(--fog);border-radius:10px;padding:16px;font-size:14px;color:var(--ink2);line-height:1.8;margin-bottom:16px}

/* devices */
.device-row{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}
.device{flex:1;min-width:120px;display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center}
.device-ico{width:44px;height:44px;border-radius:50%;background:var(--fog);display:grid;place-items:center;color:var(--red)}
.device span{font-size:13px;color:var(--ink2)}

/* guarantee */
.guarantee{background:var(--fog);padding:32px 0;border-top:1px solid #dde8f8;border-bottom:1px solid #dde8f8}
.guarantee-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.g-item{display:flex;gap:12px;padding:6px 22px;border-left:1px solid #d3e0f5}
.g-item:first-child{border-left:0;padding-left:0}
.g-item .g-ico{color:var(--blue);flex:none;margin-top:2px}
.g-item h4{font-size:15px;margin-bottom:2px}
.g-item p{font-size:13px;color:var(--ink2)}

/* cta */
.cta-wrap{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.cta-copy h2{font-size:28px;margin-bottom:14px}
.cta-copy p{font-size:15px;color:var(--ink2);margin-bottom:18px}
.cta-points li{display:flex;gap:10px;font-size:14px;color:var(--ink2);padding:6px 0}
.cta-points .dot{background:var(--red);margin-top:11px}
.form-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:28px;box-shadow:var(--sh-h)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;color:var(--ink2);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;height:44px;border:1px solid var(--line);border-radius:10px;padding:0 14px;font-size:14px;color:var(--ink);background:#fff;transition:border-color var(--ease),box-shadow var(--ease);font-family:inherit}
.field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blue);box-shadow:0 0 0 2px rgba(43,95,217,.18);outline:none}
.chip-row{display:flex;flex-wrap:wrap;gap:10px}
.chip{position:relative}
.chip input{position:absolute;opacity:0;width:0;height:0}
.chip span{display:inline-block;font-size:13px;padding:7px 16px;border-radius:999px;background:var(--fog);color:var(--ink2);border:1px solid transparent;transition:all var(--ease);cursor:pointer}
.chip input:checked + span{background:var(--red);color:#fff}
.chip input:focus-visible + span{outline:2px solid var(--blue);outline-offset:2px}
.form-note{font-size:12px;color:var(--ink3);margin-top:12px}
.form-card .btn{width:100%}

/* footer */
.site-footer{background:var(--blue-d);color:#fff;padding:56px 0 0}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.foot-brand .logo-txt .l1{color:#fff}
.foot-brand .logo-txt .l2{color:rgba(255,255,255,.6)}
.foot-brand p{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.8;margin-top:14px;max-width:320px}
.foot-col h4{font-size:15px;margin-bottom:14px;color:#fff}
.foot-col li{margin-bottom:10px}
.foot-col a{font-size:13.5px;color:rgba(255,255,255,.72);transition:color var(--ease)}
.foot-col a:hover{color:var(--red)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.16);padding:18px 0;font-size:12px;color:rgba(255,255,255,.6);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* mobile bar */
.mobile-bar{display:none}

@media (max-width:1024px){
  .nav-list{display:none}
  .nav-right .btn-sm{display:none}
  .burger{display:flex}
  .hero{padding:48px 0 44px}
  .hero-inner{grid-template-columns:1fr;gap:32px}
  .hero h1{font-size:32px}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .cat-main{grid-column:span 2;grid-row:span 1;min-height:260px}
  .poster-grid{grid-template-columns:repeat(2,1fr)}
  .topic-grid{grid-template-columns:1fr 1fr}
  .topic-text{grid-column:span 2}
  .route-wrap,.news-wrap,.cta-wrap{grid-template-columns:1fr;gap:32px}
  .partner-grid{grid-template-columns:repeat(4,1fr)}
  .guarantee-inner{grid-template-columns:1fr 1fr;gap:20px 0}
  .g-item:nth-child(3){border-left:0;padding-left:0}
  .quote-grid{grid-template-columns:1fr}
  .stat strong{font-size:30px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  .section{padding:56px 0}
}
@media (max-width:768px){
  .section{padding:40px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:24px}
  .sec-head h2{font-size:23px}
  .rank-grid{grid-template-columns:1fr;gap:0}
  .stats{grid-template-columns:1fr 1fr}
  .stat{border-left:0;border-top:1px solid var(--line);padding:22px 16px}
  .stat:nth-child(odd){border-right:1px solid var(--line)}
  .stat:nth-child(-n+2){border-top:0}
  .steps{grid-template-columns:1fr;gap:0}
  .step{padding:0 0 0 58px;margin-bottom:26px}
  .step::after{top:48px;bottom:-8px;left:21px;right:auto;border-top:0;border-left:1px dashed #bfcfea}
  .step-no{position:absolute;left:0;top:0;margin-bottom:0}
  .faq-grid{grid-template-columns:1fr;gap:0}
  .poster-grid{grid-template-columns:1fr 1fr;gap:16px}
  .poster-card.wide{grid-column:span 2}
  .upd-row{align-items:flex-start}
  .upd-right{flex-direction:column;align-items:flex-end;gap:4px}
  .device-row{gap:22px}
  .device{min-width:30%}
  .foot-grid{grid-template-columns:1fr 1fr}
  .foot-brand{grid-column:span 2}
  .partner-grid{grid-template-columns:repeat(3,1fr)}
  .mobile-bar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;background:#fff;border-top:1px solid var(--line);padding:10px 16px;gap:10px;box-shadow:0 -4px 14px rgba(31,52,94,.08)}
  .mobile-bar .btn{flex:1}
  body{padding-bottom:68px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .nav-wrap{height:60px}
  .logo-txt .l1{font-size:15px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .searchbar{border-radius:14px;padding:10px 12px}
  .searchbar .btn{width:100%}
  .cat-grid{grid-template-columns:1fr}
  .cat-main{grid-column:span 1}
  .poster-grid{grid-template-columns:1fr}
  .poster-card.wide{grid-column:span 1}
  .topic-grid{grid-template-columns:1fr}
  .topic-text{grid-column:span 1}
  .stats{grid-template-columns:1fr}
  .stat{border-right:0!important}
  .guarantee-inner{grid-template-columns:1fr}
  .g-item{border-left:0;padding:10px 0}
  .quote-grid{gap:16px}
  .upd-thumb{width:96px;height:60px}
  .upd-body h3{font-size:15px}
  .upd-right{display:none}
  .form-card{padding:20px;border-radius:14px}
  .foot-grid{grid-template-columns:1fr}
  .foot-brand{grid-column:span 1}
  .partner-grid{grid-template-columns:repeat(2,1fr)}
}