/* roulang page: index */
:root{
  --brand-700:#123A8A;
  --brand-600:#1D5BD6;
  --brand-500:#3B7BE8;
  --brand-050:#EEF4FE;
  --accent-500:#F2704A;
  --accent-600:#D2542F;
  --accent-050:#FFF1EC;
  --ink-900:#0F1B2B;
  --ink-600:#46586E;
  --ink-400:#7B8CA1;
  --line:#E3EBF6;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FD;
  --ok:#2FA37A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 10px 30px rgba(23,54,110,.07);
  --sh-2:0 18px 40px rgba(23,54,110,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--ink-600);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:800;letter-spacing:-.5px;line-height:1.32}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
ul,ol{margin:0 0 1em;padding-left:22px}
li{margin-bottom:6px}
img{max-width:100%;height:auto;display:block;border:0}
button{font-family:inherit;font-size:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:120;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s ease,box-shadow .25s ease,border-color .25s ease}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(23,54,110,.08)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:84px;transition:min-height .25s ease}
.site-header.is-scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:44px;height:44px;border-radius:13px;background:linear-gradient(140deg,var(--brand-600),var(--brand-700));display:flex;align-items:center;justify-content:center;box-shadow:0 8px 18px rgba(29,91,214,.28);flex:0 0 auto}
.brand-mark svg{width:24px;height:24px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.4px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.6px;margin-top:3px}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-600);transition:color .2s ease,background .2s ease}
.nav-link:hover{color:var(--brand-700);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:180}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;background:#fff;z-index:190;transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;padding:0 0 24px;box-shadow:-16px 0 40px rgba(15,27,43,.16)}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-top strong{font-size:15px;color:var(--ink-900)}
.drawer-close{width:44px;height:44px;border:0;background:var(--bg-soft);border-radius:12px;color:var(--ink-600);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center}
.drawer-nav{padding:16px 20px 0;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-600)}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-050);color:var(--brand-700)}
.drawer-cta{padding:20px}
.drawer-note{padding:0 20px;font-size:12px;color:var(--ink-400);line-height:1.7}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:12px;font-size:15px;font-weight:700;border:1px solid transparent;transition:background .25s ease,color .25s ease,box-shadow .25s ease,transform .2s ease,border-color .25s ease;white-space:nowrap}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px rgba(29,91,214,.22)}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(29,91,214,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-white{background:#fff;color:var(--brand-700)}
.btn-white:hover{background:#EEF4FE;color:var(--brand-700);transform:translateY(-1px)}
.btn-white-line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-white-line:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.link-more{font-weight:700;font-size:14px;color:var(--brand-600);border-bottom:1px solid rgba(29,91,214,.35);padding-bottom:2px}
.link-more:hover{border-bottom-color:var(--brand-600);color:var(--brand-700)}

/* badges */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;font-size:13px;font-weight:700;line-height:1.5;white-space:nowrap}
.badge-free{background:var(--accent-050);color:var(--accent-600)}
.badge-ok{background:rgba(47,163,122,.13);color:#1E7A5B}
.badge-city{background:var(--brand-050);color:var(--brand-700)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-600);font-weight:600}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}

/* hero */
.hero{position:relative;overflow:hidden;padding:64px 0 84px;background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 62%)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center right;opacity:.16;pointer-events:none}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(96deg,#FFFFFF 12%,rgba(255,255,255,.86) 48%,rgba(255,255,255,.42) 100%);pointer-events:none}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.06fr .94fr;gap:52px;align-items:start}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:20px}
.hero h1{font-size:46px;line-height:1.25;letter-spacing:-1px;color:var(--ink-900)}
.hero h1 .hl{color:var(--brand-600)}
.hero-lead{margin-top:20px;font-size:16.5px;line-height:1.9;color:var(--ink-600);max-width:620px}
.hero-highlights{display:grid;grid-template-columns:1fr 1fr;gap:10px 22px;margin:24px 0 0;padding:0;list-style:none}
.hero-highlights li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--ink-600);margin:0}
.hero-highlights svg{flex:0 0 auto;width:18px;height:18px;margin-top:4px;color:var(--ok)}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-2);padding:24px}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.panel-head h2{font-size:17px;font-weight:800;color:var(--ink-900)}
.panel-list{margin:6px 0 0;padding:0;list-style:none}
.panel-item{display:flex;align-items:center;gap:12px;padding:13px 10px;border-radius:12px;transition:background .2s ease,transform .2s ease}
.panel-item:hover{background:var(--brand-050);transform:translateX(2px)}
.panel-ico{flex:0 0 auto;width:38px;height:38px;border-radius:11px;background:var(--brand-050);color:var(--brand-600);display:flex;align-items:center;justify-content:center}
.panel-ico svg{width:19px;height:19px}
.panel-item-body{min-width:0}
.panel-item-body strong{display:block;font-size:14.5px;font-weight:700;color:var(--ink-900)}
.panel-item-body span{display:block;font-size:12.5px;color:var(--ink-400);line-height:1.6}
.panel-arrow{margin-left:auto;color:var(--ink-400);flex:0 0 auto;font-size:15px}
.panel-foot{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:10px}
.panel-foot span{font-size:12.5px;color:var(--ink-400)}

/* sections */
.section{padding:96px 0}
.section--soft{background:var(--bg-soft)}
.section--line{border-top:1px solid var(--line)}
.section-head{max-width:780px;margin-bottom:44px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-600);letter-spacing:.4px;margin-bottom:14px}
.eyebrow::before{content:"";width:18px;height:3px;border-radius:3px;background:var(--accent-500)}
.section-title{font-size:32px;font-weight:800;color:var(--ink-900)}
.section-desc{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--ink-600)}

/* grids */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-6{grid-template-columns:repeat(3,1fr)}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:26px;transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease}
.card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D6E3F7}
.card h3{font-size:19px;margin-bottom:10px}
.card p{font-size:14.5px;line-height:1.85;color:var(--ink-600)}
.card-ico{width:48px;height:48px;border-radius:14px;background:var(--brand-050);color:var(--brand-600);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.card-ico svg{width:24px;height:24px}
.card-foot{margin-top:18px}

/* stats */
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--r-xl);background:#fff;box-shadow:var(--sh-1);overflow:hidden}
.stat-cell{padding:30px 26px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-size:36px;font-weight:800;color:var(--brand-700);letter-spacing:-1px;line-height:1.1}
.stat-num small{font-size:16px;font-weight:700;margin-left:4px;color:var(--brand-600)}
.stat-label{margin-top:8px;font-size:14px;color:var(--ink-600)}
.stat-note{margin-top:6px;font-size:12.5px;color:var(--ink-400)}

/* steps */
.steps-wrap{display:grid;grid-template-columns:.95fr 1.05fr;gap:48px;align-items:center}
.step-list{position:relative;margin:0;padding:0;list-style:none}
.step-item{position:relative;padding:0 0 30px 62px}
.step-item:last-child{padding-bottom:0}
.step-item::before{content:"";position:absolute;left:21px;top:44px;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand-050),var(--line))}
.step-item:last-child::before{display:none}
.step-num{position:absolute;left:0;top:0;width:44px;height:44px;border-radius:14px;background:var(--brand-600);color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 20px rgba(29,91,214,.24)}
.step-item h3{font-size:19px;margin-bottom:8px}
.step-item p{font-size:14.5px;line-height:1.85;color:var(--ink-600);margin:0}
.media-frame{position:relative;border-radius:var(--r-xl);overflow:hidden;box-shadow:var(--sh-2);border:1px solid var(--line);aspect-ratio:16/10;background:var(--brand-050)}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-float{position:absolute;left:20px;bottom:20px;background:#fff;border-radius:14px;padding:12px 16px;box-shadow:var(--sh-2);display:flex;align-items:center;gap:10px;font-size:13px;font-weight:700;color:var(--ink-900)}
.media-float .badge-dot{background:var(--ok);width:8px;height:8px}

/* feeds */
.feed-layout{display:grid;grid-template-columns:1.55fr .95fr;gap:36px;align-items:start}
.feed-list{display:grid;gap:16px}
.feed-item{display:grid;grid-template-columns:168px 1fr;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:16px;transition:box-shadow .25s ease,transform .25s ease}
.feed-item:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.feed-thumb{border-radius:12px;overflow:hidden;background:var(--brand-050);aspect-ratio:16/10}
.feed-thumb img{width:100%;height:100%;object-fit:cover}
.feed-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px;font-size:12.5px;color:var(--ink-400)}
.feed-meta .badge{font-size:12px;padding:3px 10px}
.feed-item h3{font-size:16.5px;line-height:1.55;margin:0 0 6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.feed-item p{font-size:13.5px;line-height:1.75;color:var(--ink-600);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:24px}
.side-card + .side-card{margin-top:20px}
.side-card h3{font-size:17px;margin-bottom:14px}
.rank-item{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line)}
.rank-item:last-child{border-bottom:0;padding-bottom:0}
.rank-no{flex:0 0 auto;width:24px;height:24px;border-radius:8px;background:var(--brand-050);color:var(--brand-700);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center}
.rank-item:nth-child(1) .rank-no{background:var(--accent-050);color:var(--accent-600)}
.rank-text{font-size:14px;color:var(--ink-600);font-weight:600}
.rank-item:hover .rank-text{color:var(--brand-700)}

/* topic cards */
.topic-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .25s ease,transform .25s ease;display:flex;flex-direction:column}
.topic-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.topic-cover{aspect-ratio:16/9;background:var(--brand-050);overflow:hidden}
.topic-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.topic-card:hover .topic-cover img{transform:scale(1.04)}
.topic-body{padding:20px 22px 24px}
.topic-body h3{font-size:17.5px;margin:10px 0 8px}
.topic-body p{font-size:14px;line-height:1.8;color:var(--ink-600);margin:0 0 14px}

/* news cards */
.news-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .25s ease,transform .25s ease;display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.news-cover{aspect-ratio:16/9;overflow:hidden;background:var(--brand-050)}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-cover img{transform:scale(1.04)}
.news-body{padding:18px 20px 22px;display:flex;flex-direction:column;flex:1}
.news-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-400);margin-bottom:8px;flex-wrap:wrap}
.news-meta .badge{font-size:12px;padding:3px 10px}
.news-body h3{font-size:16.5px;line-height:1.55;margin:0 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body p{font-size:13.5px;line-height:1.75;color:var(--ink-600);margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-body .news-time{margin-top:auto;font-size:12.5px;color:var(--ink-400)}

/* scenes */
.scene-card{display:flex;align-items:flex-start;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.scene-ico{flex:0 0 auto;width:42px;height:42px;border-radius:12px;background:var(--brand-050);color:var(--brand-600);display:flex;align-items:center;justify-content:center}
.scene-ico svg{width:21px;height:21px}
.scene-card h3{font-size:16px;margin-bottom:4px}
.scene-card p{font-size:13.5px;line-height:1.7;color:var(--ink-600);margin:0}

/* compare */
.compare-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:30px}
.compare-card.is-brand{border-color:rgba(29,91,214,.35);box-shadow:0 18px 40px rgba(29,91,214,.12)}
.compare-card h3{font-size:20px;margin-bottom:18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.compare-list{list-style:none;margin:0;padding:0}
.compare-list li{display:flex;align-items:flex-start;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--ink-600)}
.compare-list li:last-child{border-bottom:0;padding-bottom:0}
.compare-list svg{flex:0 0 auto;width:18px;height:18px;margin-top:4px}
.ico-yes{color:var(--ok)}
.ico-no{color:var(--ink-400)}

/* plans */
.plan-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:30px;position:relative;transition:box-shadow .25s ease,transform .25s ease}
.plan-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px)}
.plan-card.is-pro{border-color:rgba(242,112,74,.4)}
.plan-tag{position:absolute;top:-13px;right:24px;background:var(--accent-500);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:999px;box-shadow:0 8px 18px rgba(242,112,74,.3)}
.plan-card h3{font-size:20px;margin-bottom:6px}
.plan-sub{font-size:13.5px;color:var(--ink-400);margin-bottom:20px}
.plan-list{list-style:none;margin:0;padding:0}
.plan-list li{display:flex;align-items:flex-start;gap:9px;font-size:14.5px;color:var(--ink-600);padding:9px 0}
.plan-list svg{flex:0 0 auto;width:17px;height:17px;margin-top:5px;color:var(--brand-600)}
.plan-note{margin-top:18px;font-size:12.5px;color:var(--ink-400);line-height:1.7}

/* reviews */
.review-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px;transition:box-shadow .25s ease,transform .25s ease}
.review-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{width:44px;height:44px;border-radius:13px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:15px;flex:0 0 auto}
.avatar-a{background:linear-gradient(140deg,#3B7BE8,#1D5BD6)}
.avatar-b{background:linear-gradient(140deg,#F2704A,#D2542F)}
.avatar-c{background:linear-gradient(140deg,#3FC79A,#2FA37A)}
.review-name{font-size:15px;font-weight:700;color:var(--ink-900)}
.review-card p{font-size:14px;line-height:1.85;color:var(--ink-600);margin:0}

/* board */
.board-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.board-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.board-cell{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px;box-shadow:var(--sh-1);transition:transform .2s ease,box-shadow .2s ease}
.board-cell:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.board-cell strong{display:block;font-size:17px;color:var(--brand-700);font-weight:800}
.board-cell span{display:block;margin-top:6px;font-size:12.5px;color:var(--ink-400);line-height:1.6}

/* partners */
.partner-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease}
.partner-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.partner-card h3{font-size:16px;margin-bottom:8px}
.partner-card p{font-size:13.5px;line-height:1.75;color:var(--ink-600);margin:0}
.partner-ico{width:40px;height:40px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.partner-ico svg{width:20px;height:20px}

/* download */
.download-band{position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--brand-700);color:#fff;padding:52px 48px;box-shadow:0 24px 50px rgba(18,58,138,.24)}
.download-band::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/8f530025ae3ecbfa.webp');background-size:cover;background-position:center;opacity:.16}
.download-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.download-inner h2{color:#fff;font-size:30px}
.download-inner p{color:rgba(255,255,255,.82);font-size:15px;margin-top:14px}
.download-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.subscribe-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.24);border-radius:var(--r-lg);padding:24px;backdrop-filter:blur(4px)}
.subscribe-card h3{color:#fff;font-size:16px;margin-bottom:8px}
.subscribe-card p{color:rgba(255,255,255,.75);font-size:13px;margin-bottom:16px}
.field-label{display:block;font-size:13px;color:rgba(255,255,255,.85);margin-bottom:8px;font-weight:600}
.field-input{width:100%;height:48px;border-radius:10px;border:1px solid rgba(255,255,255,.32);background:rgba(255,255,255,.94);padding:0 14px;font-size:14px;color:var(--ink-900);transition:border-color .2s ease,box-shadow .2s ease}
.field-input::placeholder{color:var(--ink-400)}
.field-input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(59,123,232,.28)}
.field-hint{margin-top:10px;font-size:12px;color:rgba(255,255,255,.65);line-height:1.7}
.form-row{display:flex;gap:10px}
.form-row .field-input{flex:1;min-width:0}

/* faq */
.faq-list{max-width:900px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);box-shadow:var(--sh-1);margin-bottom:14px;overflow:hidden;transition:box-shadow .2s ease}
.faq-item:hover{box-shadow:var(--sh-2)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:20px 22px;background:none;border:0;text-align:left;font-size:16px;font-weight:700;color:var(--ink-900);min-height:44px}
.faq-icon{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-050);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;transition:transform .2s ease,background .2s ease}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-item.is-open .faq-a{max-height:360px}
.faq-a-inner{padding:0 22px 22px;font-size:14.5px;line-height:1.9;color:var(--ink-600)}

/* cta big */
.cta-band{position:relative;overflow:hidden;background:var(--brand-700);border-radius:var(--r-xl);color:#fff;padding:56px 48px;box-shadow:0 26px 54px rgba(18,58,138,.26)}
.cta-band::after{content:"";position:absolute;right:-70px;bottom:-90px;width:280px;height:280px;border-radius:50%;border:36px solid rgba(255,255,255,.08)}
.cta-band h2{color:#fff;font-size:32px;max-width:720px}
.cta-band p{color:rgba(255,255,255,.82);font-size:15.5px;margin-top:16px;max-width:660px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;z-index:2}

/* empty */
.empty-state{display:flex;flex-direction:column;align-items:center;gap:10px;padding:48px 20px;background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);color:var(--ink-400);font-size:14px;text-align:center;grid-column:1/-1}

/* footer */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.76);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:36px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.14);box-shadow:none}
.footer-brand strong{color:#fff;font-size:16px;font-weight:800;letter-spacing:-.3px}
.footer-brand span{display:block;font-size:11px;color:rgba(255,255,255,.6);margin-top:2px;letter-spacing:.5px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.7);max-width:320px}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;letter-spacing:.2px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:13.5px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.16);padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.6)}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:#fff}

/* mobile fixed cta */
.mobile-cta{position:fixed;left:0;right:0;bottom:0;height:64px;background:#fff;box-shadow:0 -8px 24px rgba(23,54,110,.14);display:none;align-items:center;justify-content:space-between;gap:10px;padding:0 14px;z-index:130;transform:translateY(110%);transition:transform .3s ease}
.mobile-cta.is-visible{transform:translateY(0)}
.mobile-cta p{margin:0;font-size:12.5px;line-height:1.4;color:var(--ink-900);font-weight:700}
.mobile-cta small{display:block;font-size:11px;color:var(--ink-400);font-weight:500}
.mobile-cta .btn{height:44px;padding:0 16px;font-size:14px;flex:0 0 auto}
.mobile-cta-close{position:absolute;top:-11px;right:10px;width:26px;height:26px;border-radius:50%;background:#fff;border:1px solid var(--line);color:var(--ink-400);font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px rgba(23,54,110,.12)}

/* responsive */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:1024px){
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-ghost{display:none}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:36px}
  .hero-lead{font-size:15.5px}
  .section{padding:64px 0}
  .section-title{font-size:26px}
  .grid-3,.grid-4,.grid-6{grid-template-columns:repeat(2,1fr)}
  .stat-strip{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2n){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .steps-wrap{grid-template-columns:1fr;gap:36px}
  .feed-layout{grid-template-columns:1fr}
  .board-wrap{grid-template-columns:1fr;gap:32px}
  .download-inner{grid-template-columns:1fr;gap:28px}
  .download-band{padding:40px 32px}
  .cta-band{padding:42px 32px}
  .cta-band h2{font-size:26px}
}
@media (max-width:640px){
  .container{padding:0 18px}
  .header-inner{min-height:68px;gap:12px}
  .brand-mark{width:38px;height:38px;border-radius:11px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px}
  .header-actions .btn-primary{display:none}
  .hero{padding:36px 0 52px}
  .hero h1{font-size:28px;letter-spacing:-.6px}
  .hero-lead{font-size:15px}
  .hero-highlights{grid-template-columns:1fr}
  .hero-cta .btn{width:100%}
  .hero-panel{padding:18px}
  .section{padding:44px 0}
  .section-title{font-size:22px}
  .section-desc{font-size:14.5px}
  .grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr}
  .stat-strip{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);padding:22px}
  .stat-cell:last-child{border-bottom:0}
  .stat-num{font-size:30px}
  .feed-item{grid-template-columns:1fr;gap:12px}
  .feed-thumb{aspect-ratio:16/9}
  .card,.review-card,.plan-card,.compare-card{padding:22px}
  .download-band{padding:32px 22px;border-radius:18px}
  .download-inner h2{font-size:22px}
  .cta-band{padding:34px 22px;border-radius:18px}
  .cta-band h2{font-size:22px}
  .cta-actions .btn{width:100%}
  .form-row{flex-direction:column}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-desc{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .mobile-cta{display:flex}
  .faq-q{font-size:15px;padding:17px 18px}
  .faq-a-inner{padding:0 18px 18px}
  body{padding-bottom:0}
}
@media (max-width:420px){
  .footer-grid{grid-template-columns:1fr}
}

/* roulang page: article */
:root{
  --brand-700:#123A8A;
  --brand-600:#1D5BD6;
  --brand-500:#3B7BE8;
  --brand-050:#EEF4FE;
  --accent-500:#F2704A;
  --accent-600:#D2542F;
  --accent-050:#FFF1EC;
  --ink-900:#0F1B2B;
  --ink-600:#46586E;
  --ink-400:#7B8CA1;
  --line:#E3EBF6;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FD;
  --ok:#2FA37A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 10px 30px rgba(23,54,110,.07);
  --sh-2:0 18px 40px rgba(23,54,110,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--ink-600);
  background:var(--bg);-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;height:auto;display:block;border:0}
p{margin:0 0 1em}
button{font-family:inherit;font-size:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;color:var(--ink-900);letter-spacing:-.4px}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.narrow{max-width:760px;margin:0 auto}

/* ============ header ============ */
.site-header{
  position:sticky;top:0;z-index:120;background:rgba(255,255,255,.94);
  backdrop-filter:blur(12px);border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(23,54,110,.08)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:84px;transition:min-height .25s ease}
.site-header.is-scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand:hover{color:inherit}
.brand-mark{
  width:44px;height:44px;border-radius:13px;
  background:linear-gradient(140deg,var(--brand-600),var(--brand-700));
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 18px rgba(29,91,214,.28);flex:0 0 auto;
}
.brand-mark svg{width:24px;height:24px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.4px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.6px;margin-top:3px}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-600);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--brand-700);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--brand-600);
}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:12px;align-items:center;justify-content:center;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ============ drawer ============ */
.drawer-mask{
  position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;
  transition:opacity .3s ease,visibility .3s ease;z-index:180;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;background:#fff;z-index:190;
  transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;
  padding:0 0 24px;box-shadow:-16px 0 40px rgba(15,27,43,.16);
}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-top strong{font-size:15px;color:var(--ink-900)}
.drawer-close{
  width:44px;height:44px;border:0;background:var(--bg-soft);border-radius:12px;
  color:var(--ink-600);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center;
}
.drawer-nav{padding:16px 20px 0;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-600)}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-050);color:var(--brand-700)}
.drawer-cta{padding:20px}
.drawer-note{padding:0 20px;font-size:12px;color:var(--ink-400);line-height:1.7}

/* ============ buttons / badges ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;
  border-radius:12px;font-size:15px;font-weight:700;border:1px solid transparent;
  transition:background .25s ease,color .25s ease,box-shadow .25s ease,transform .2s ease,border-color .25s ease;
  white-space:nowrap;
}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px rgba(29,91,214,.22)}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(29,91,214,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-white{background:#fff;color:var(--brand-700)}
.btn-white:hover{background:#EEF4FE;color:var(--brand-700);transform:translateY(-1px)}
.btn-white-line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-white-line:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;
  font-size:13px;font-weight:700;line-height:1.5;white-space:nowrap;
}
.badge-free{background:var(--accent-050);color:var(--accent-600)}
.badge-ok{background:rgba(47,163,122,.13);color:#1E7A5B}
.badge-city{background:var(--brand-050);color:var(--brand-700)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-600);font-weight:600}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}

/* ============ article head ============ */
.article-hero{
  position:relative;padding:34px 0 40px;
  background:linear-gradient(180deg,#F7FAFF 0%,#FFFFFF 100%);
  border-bottom:1px solid var(--line);overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(29,91,214,.08) 0%,rgba(29,91,214,0) 70%);pointer-events:none;
}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400)}
.breadcrumb a{color:var(--ink-600);font-weight:600}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--ink-400)}
.article-title{
  margin:18px 0 0;font-size:clamp(26px,3.6vw,42px);line-height:1.34;font-weight:800;
  letter-spacing:-.6px;color:var(--ink-900);max-width:920px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;margin-top:22px;
  font-size:13.5px;color:var(--ink-400);
}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-item svg{width:15px;height:15px;stroke:var(--ink-400);fill:none;stroke-width:1.7}
.meta-divider{width:1px;height:14px;background:var(--line);display:inline-block}

/* ============ summary ============ */
.section{padding:52px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.summary-card{
  max-width:760px;margin:0 auto;background:var(--brand-050);border:1px solid #D8E5FA;
  border-radius:var(--r-lg);padding:26px 30px;box-shadow:var(--sh-1);
}
.summary-card h2{
  font-size:17px;font-weight:800;color:var(--brand-700);margin-bottom:14px;
  display:flex;align-items:center;gap:9px;letter-spacing:-.2px;
}
.summary-card h2 span{
  display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;
  background:var(--brand-600);color:#fff;font-size:13px;font-weight:800;
}
.summary-list{display:grid;gap:10px}
.summary-list li{
  position:relative;padding-left:22px;font-size:15px;line-height:1.8;color:var(--ink-600);
}
.summary-list li::before{
  content:"";position:absolute;left:2px;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--brand-600);opacity:.55;
}

/* ============ article body ============ */
.article-body{
  max-width:760px;margin:0 auto;font-size:17px;line-height:1.9;color:var(--ink-600);
  word-break:break-word;
}
.article-body h2{
  position:relative;font-size:26px;line-height:1.46;font-weight:800;color:var(--ink-900);
  margin:44px 0 16px;padding-left:16px;letter-spacing:-.4px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;border-radius:3px;background:var(--brand-600);
}
.article-body h2:first-child{margin-top:0}
.article-body h3{font-size:20px;font-weight:700;color:var(--ink-900);margin:34px 0 12px;letter-spacing:-.2px}
.article-body h4{font-size:17px;font-weight:700;color:var(--ink-900);margin:26px 0 10px}
.article-body p{margin:0 0 1em}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:24px;list-style:revert}
.article-body li{margin-bottom:.5em}
.article-body li::marker{color:var(--accent-500);font-weight:700}
.article-body blockquote{
  margin:26px 0;padding:18px 24px;background:var(--brand-050);
  border-left:3px solid var(--brand-600);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:26px 0 10px;box-shadow:var(--sh-1)}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-400);margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.article-body th{background:var(--bg-soft);color:var(--ink-900);font-weight:700;text-align:left}
.article-body th,.article-body td{padding:12px 16px;border-bottom:1px solid var(--line)}
.article-body tr:last-child td{border-bottom:0}
.article-body tbody tr:nth-child(even) td{background:#FAFCFF}
.article-body a{color:var(--brand-600);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand-700);font-weight:600}
.article-body code{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:14px;color:var(--brand-700);
}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0}

/* ============ empty state ============ */
.empty-state{
  max-width:760px;margin:0 auto;text-align:center;padding:56px 28px;
  background:#fff;border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state .empty-icon{
  width:56px;height:56px;border-radius:16px;background:var(--brand-050);margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;
}
.empty-state .empty-icon svg{width:26px;height:26px;stroke:var(--brand-600);fill:none;stroke-width:1.6}
.empty-state h3{font-size:19px;font-weight:800;color:var(--ink-900);margin-bottom:8px}
.empty-state p{font-size:14.5px;color:var(--ink-400);margin-bottom:22px}

/* ============ safety card ============ */
.safety-card{
  max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-left:4px solid var(--ok);border-radius:var(--r-lg);padding:30px;
  box-shadow:var(--sh-1);display:grid;grid-template-columns:1.15fr .85fr;gap:30px;align-items:center;
  transition:box-shadow .25s ease,transform .25s ease;
}
.safety-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.safety-card h2{font-size:22px;font-weight:800;margin-bottom:10px;letter-spacing:-.3px}
.safety-card p.lead{font-size:14.5px;color:var(--ink-600);margin-bottom:14px}
.safety-list{display:grid;gap:9px}
.safety-list li{position:relative;padding-left:24px;font-size:14.5px;line-height:1.75;color:var(--ink-600)}
.safety-list li::before{
  content:"";position:absolute;left:0;top:6px;width:15px;height:15px;border-radius:50%;
  background:rgba(47,163,122,.15);
}
.safety-list li::after{
  content:"";position:absolute;left:4px;top:10px;width:7px;height:4px;border-left:2px solid var(--ok);
  border-bottom:2px solid var(--ok);transform:rotate(-45deg);
}
.safety-figure{border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);box-shadow:var(--sh-1)}
.safety-figure img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/11}

/* ============ related ============ */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.sec-head h2{font-size:28px;font-weight:800;letter-spacing:-.5px}
.sec-head p{font-size:14.5px;color:var(--ink-400);margin:6px 0 0}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease;
}
.rel-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#C9DBF5;color:inherit}
.rel-card .rel-tag{
  display:inline-flex;align-self:flex-start;padding:4px 11px;border-radius:999px;
  background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:700;margin-bottom:14px;
}
.rel-card h3{font-size:18px;font-weight:800;line-height:1.5;color:var(--ink-900);margin-bottom:10px}
.rel-card p{font-size:14px;color:var(--ink-400);line-height:1.75;margin-bottom:16px}
.rel-card .rel-more{font-size:13.5px;font-weight:700;color:var(--brand-600);margin-top:auto}

/* ============ action bar ============ */
.action-bar{
  max-width:900px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;padding-top:32px;border-top:1px solid var(--line);
}
.action-bar .back-links{display:flex;gap:10px;flex-wrap:wrap}

/* ============ cta band ============ */
.cta-band{
  position:relative;overflow:hidden;background:linear-gradient(120deg,var(--brand-700),#17489F);
  border-radius:var(--r-xl);padding:44px 46px;color:#fff;display:flex;align-items:center;
  justify-content:space-between;gap:28px;flex-wrap:wrap;box-shadow:0 22px 48px rgba(18,58,138,.24);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;bottom:-90px;width:280px;height:280px;border-radius:50%;
  border:28px solid rgba(255,255,255,.08);
}
.cta-band h2{color:#fff;font-size:28px;font-weight:800;letter-spacing:-.5px;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.82);font-size:14.5px;margin:0}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1}

/* ============ footer ============ */
.site-footer{background:var(--brand-700);color:#fff;padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:32px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.14);box-shadow:none}
.footer-brand .brand-mark svg{width:22px;height:22px}
.footer-brand strong{display:block;font-size:16px;color:#fff;font-weight:800;letter-spacing:-.3px}
.footer-brand span{display:block;font-size:11.5px;color:rgba(255,255,255,.6);margin-top:2px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.72);margin:0}
.footer-col h4{font-size:14px;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:.2px}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:13.5px;color:rgba(255,255,255,.72)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:rgba(255,255,255,.6);line-height:1.8;
}

/* ============ responsive ============ */
@media (max-width:1024px){
  .nav-desktop{display:none}
  .nav-toggle{display:inline-flex}
  .header-inner{min-height:72px}
  .site-header.is-scrolled .header-inner{min-height:64px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .section{padding:44px 0}
  .safety-card{grid-template-columns:1fr;padding:26px}
  .cta-band{padding:36px}
  .cta-band h2{font-size:24px}
}
@media (max-width:768px){
  .header-actions .btn-outline{display:none}
  .article-hero{padding:24px 0 30px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:18px}
  .summary-card{padding:22px 22px}
  .sec-head h2{font-size:23px}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-desc{font-size:13px}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .brand-text strong{font-size:15px}
  .brand-text em{font-size:10px}
  .brand-mark{width:40px;height:40px;border-radius:11px}
  .section{padding:34px 0}
  .article-title{font-size:25px}
  .article-meta{font-size:12.5px;gap:10px 14px}
  .btn{height:46px;padding:0 20px;font-size:14.5px}
  .btn-sm{height:38px;padding:0 15px;font-size:13.5px}
  .header-actions .btn-primary{display:none}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta-band{padding:28px 22px;border-radius:var(--r-lg)}
  .cta-band h2{font-size:21px}
  .cta-band .cta-actions .btn{width:100%}
  .action-bar{flex-direction:column;align-items:stretch}
  .action-bar .back-links{flex-direction:column}
  .action-bar .back-links .btn{width:100%}
  .safety-card{padding:22px}
}

/* roulang page: category1 */
:root{
  --brand-700:#123A8A;
  --brand-600:#1D5BD6;
  --brand-500:#3B7BE8;
  --brand-050:#EEF4FE;
  --accent-500:#F2704A;
  --accent-600:#D2542F;
  --accent-050:#FFF1EC;
  --ink-900:#0F1B2B;
  --ink-600:#46586E;
  --ink-400:#7B8CA1;
  --line:#E3EBF6;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FD;
  --ok:#2FA37A;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:16px;
  --r-xl:24px;
  --sh-1:0 10px 30px rgba(23,54,110,.07);
  --sh-2:0 18px 40px rgba(23,54,110,.12);
  --font:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);font-size:16px;line-height:1.85;color:var(--ink-600);
  background:var(--bg);-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0 0 .6em;color:var(--ink-900);font-weight:800;letter-spacing:-.5px;line-height:1.32}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:19px}
h4{font-size:16px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
img{max-width:100%;height:auto;display:block;border:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
:focus-visible{outline:2px solid var(--accent-500);outline-offset:3px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== 头部导航 ===== */
.site-header{position:sticky;top:0;z-index:120;background:rgba(255,255,255,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .25s ease,box-shadow .25s ease,border-color .25s ease}
.site-header.is-scrolled{background:#fff;border-bottom-color:var(--line);box-shadow:0 6px 18px rgba(23,54,110,.08)}
.header-inner{display:flex;align-items:center;gap:28px;min-height:84px;transition:min-height .25s ease}
.site-header.is-scrolled .header-inner{min-height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:44px;height:44px;border-radius:13px;background:linear-gradient(140deg,var(--brand-600),var(--brand-700));display:flex;align-items:center;justify-content:center;box-shadow:0 8px 18px rgba(29,91,214,.28);flex:0 0 auto}
.brand-mark svg{width:24px;height:24px;display:block}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:800;color:var(--ink-900);letter-spacing:-.4px}
.brand-text em{font-style:normal;font-size:11px;color:var(--ink-400);letter-spacing:.6px;margin-top:3px}
.nav-desktop{display:flex;align-items:center;gap:6px;margin-left:8px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--ink-600);transition:color .2s ease,background .2s ease}
.nav-link:hover{color:var(--brand-700);background:var(--brand-050)}
.nav-link.is-active{color:var(--brand-700)}
.nav-link.is-active::after{content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand-600)}
.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:12px;align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ===== 移动抽屉 ===== */
.drawer-mask{position:fixed;inset:0;background:rgba(15,27,43,.45);opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;z-index:180}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{position:fixed;top:0;right:0;bottom:0;width:280px;max-width:86vw;background:#fff;z-index:190;transform:translateX(102%);transition:transform .3s ease;display:flex;flex-direction:column;padding:0 0 24px;box-shadow:-16px 0 40px rgba(15,27,43,.16)}
.drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:64px;padding:0 20px;border-bottom:1px solid var(--line)}
.drawer-top strong{font-size:15px;color:var(--ink-900)}
.drawer-close{width:44px;height:44px;border:0;background:var(--bg-soft);border-radius:12px;color:var(--ink-600);font-size:20px;line-height:1;display:flex;align-items:center;justify-content:center}
.drawer-nav{padding:16px 20px 0;display:flex;flex-direction:column;gap:4px}
.drawer-nav a{display:block;padding:12px 14px;border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-600)}
.drawer-nav a:hover,.drawer-nav a.is-active{background:var(--brand-050);color:var(--brand-700)}
.drawer-cta{padding:20px}
.drawer-note{padding:0 20px;font-size:12px;color:var(--ink-400);line-height:1.7}

/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:12px;font-size:15px;font-weight:700;border:1px solid transparent;transition:background .25s ease,color .25s ease,box-shadow .25s ease,transform .2s ease,border-color .25s ease;white-space:nowrap}
.btn-primary{background:var(--brand-600);color:#fff;box-shadow:0 10px 22px rgba(29,91,214,.22)}
.btn-primary:hover{background:var(--brand-500);color:#fff;transform:translateY(-1px);box-shadow:0 14px 28px rgba(29,91,214,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;border-color:var(--brand-600);color:var(--brand-600)}
.btn-outline:hover{background:var(--brand-050);color:var(--brand-700)}
.btn-white{background:#fff;color:var(--brand-700)}
.btn-white:hover{background:#EEF4FE;color:var(--brand-700);transform:translateY(-1px)}
.btn-white-line{background:transparent;border-color:rgba(255,255,255,.55);color:#fff}
.btn-white-line:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px}
.btn-block{width:100%}

/* ===== 徽章 ===== */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 13px;border-radius:999px;font-size:13px;font-weight:700;line-height:1.5;white-space:nowrap}
.badge-free{background:var(--accent-050);color:var(--accent-600)}
.badge-ok{background:rgba(47,163,122,.13);color:#1E7A5B}
.badge-city{background:var(--brand-050);color:var(--brand-700)}
.badge-line{background:#fff;border:1px solid var(--line);color:var(--ink-600);font-weight:600}
.badge-dot{width:6px;height:6px;border-radius:50%;background:currentColor;display:inline-block}

/* ===== 通用板块 ===== */
.section{padding:88px 0}
.section-soft{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-600);letter-spacing:.5px;margin-bottom:12px}
.section-eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent-500)}
.section-head p{font-size:16px;color:var(--ink-600);margin-bottom:0}

/* ===== 分类页头 ===== */
.cat-hero{position:relative;padding:44px 0 60px;background:var(--bg-soft);overflow:hidden;border-bottom:1px solid var(--line)}
.cat-hero-bg{position:absolute;inset:0;background-image:url('/assets/images/7dc9379448863cd8.webp');background-size:cover;background-position:center;opacity:.14}
.cat-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(245,248,253,.96) 0%,rgba(245,248,253,.82) 52%,rgba(238,244,254,.7) 100%)}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-400);margin-bottom:18px}
.breadcrumb a{color:var(--ink-600);font-weight:600}
.breadcrumb a:hover{color:var(--brand-600)}
.breadcrumb .sep{color:var(--ink-400)}
.cat-hero-grid{display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:center}
.cat-hero h1{margin-bottom:14px;font-size:38px}
.cat-hero-lead{font-size:16.5px;color:var(--ink-600);max-width:640px;margin-bottom:22px}
.cat-hero-badges{display:flex;flex-wrap:wrap;gap:10px}
.cat-stats{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:22px 24px;display:flex;flex-direction:column;gap:16px}
.cat-stat{display:flex;align-items:baseline;gap:10px}
.cat-stat b{font-size:26px;color:var(--brand-700);font-weight:800;letter-spacing:-1px;line-height:1}
.cat-stat span{font-size:13.5px;color:var(--ink-600)}
.cat-stat em{font-style:normal;font-size:12.5px;color:var(--ink-400);display:block;margin-top:2px}

/* ===== 场景卡片网格 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.scene-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D5E3F8}
.scene-thumb{position:relative;aspect-ratio:16/9;background:var(--brand-050);overflow:hidden}
.scene-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scene-card:hover .scene-thumb img{transform:scale(1.04)}
.scene-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.scene-tags{display:flex;flex-wrap:wrap;gap:8px}
.scene-body h3{margin:0;font-size:19px}
.scene-body p{margin:0;font-size:14.5px;color:var(--ink-600);line-height:1.8}
.scene-meta{margin-top:auto;padding-top:14px;border-top:1px dashed var(--line);display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-400)}
.scene-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--ink-400)}
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{padding:8px 16px;border-radius:999px;border:1px solid var(--line);background:#fff;font-size:13.5px;font-weight:600;color:var(--ink-600);transition:all .2s ease}
.chip:hover{border-color:var(--brand-500);color:var(--brand-600)}
.chip.is-on{background:var(--brand-600);border-color:var(--brand-600);color:#fff;box-shadow:0 8px 18px rgba(29,91,214,.22)}

/* ===== 特征双栏 ===== */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.feature-copy h2{margin-bottom:16px}
.feature-list{display:flex;flex-direction:column;gap:16px}
.feature-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:18px 20px;box-shadow:var(--sh-1);transition:box-shadow .25s ease,transform .25s ease}
.feature-item:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.feature-ico{width:42px;height:42px;border-radius:12px;background:var(--brand-050);color:var(--brand-700);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.feature-ico svg{width:21px;height:21px}
.feature-item h4{margin:0 0 4px;font-size:16px;color:var(--ink-900)}
.feature-item p{margin:0;font-size:14px;line-height:1.75}

/* ===== 竖线流程 ===== */
.flow-line{position:relative;display:flex;flex-direction:column;gap:0;max-width:860px}
.flow-step{position:relative;display:grid;grid-template-columns:64px 1fr;gap:22px;padding-bottom:36px}
.flow-step:last-child{padding-bottom:0}
.flow-step::before{content:"";position:absolute;left:31px;top:64px;bottom:0;width:2px;background:linear-gradient(180deg,var(--brand-050),var(--line))}
.flow-step:last-child::before{display:none}
.flow-num{width:64px;height:64px;border-radius:20px;background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:var(--brand-600);z-index:1}
.flow-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:22px 26px;transition:box-shadow .25s ease,transform .25s ease}
.flow-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px)}
.flow-card h3{margin:0 0 8px;font-size:19px}
.flow-card p{margin:0;font-size:14.5px;line-height:1.8}

/* ===== 安全卡 ===== */
.safety-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);box-shadow:var(--sh-1);padding:44px 48px;display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
.safety-card h2{font-size:28px;margin-bottom:12px}
.safety-list{display:flex;flex-direction:column;gap:16px}
.safety-list li{display:flex;gap:12px;font-size:14.5px;line-height:1.8;color:var(--ink-600)}
.safety-list li svg{width:20px;height:20px;flex:0 0 auto;color:var(--ok);margin-top:3px}
.safety-list strong{color:var(--ink-900)}

/* ===== 要素小卡 ===== */
.tile-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.tile{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:24px 22px;transition:box-shadow .25s ease,transform .25s ease,border-color .25s ease}
.tile:hover{box-shadow:var(--sh-2);transform:translateY(-4px);border-color:#D5E3F8}
.tile-ico{width:44px;height:44px;border-radius:14px;background:var(--accent-050);color:var(--accent-600);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.tile-ico svg{width:22px;height:22px}
.tile h3{font-size:17px;margin-bottom:8px}
.tile p{margin:0;font-size:14px;line-height:1.78;color:var(--ink-600)}

/* ===== FAQ ===== */
.faq-wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease}
.faq-item.is-open{border-color:#C9DBF7;box-shadow:var(--sh-2)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;text-align:left;font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.6}
.faq-q:hover{color:var(--brand-600)}
.faq-sign{flex:0 0 auto;width:28px;height:28px;border-radius:50%;background:var(--brand-050);color:var(--brand-600);display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;transition:transform .2s ease,background .2s ease}
.faq-item.is-open .faq-sign{transform:rotate(45deg);background:var(--brand-600);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 24px 22px;font-size:14.8px;line-height:1.85;color:var(--ink-600)}
.faq-item.is-open .faq-a{max-height:320px}

/* ===== 底部 CTA ===== */
.cta-band{background:var(--brand-050);border:1px solid var(--line);border-radius:var(--r-xl);padding:48px 52px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;position:relative;overflow:hidden}
.cta-band::after{content:"";position:absolute;right:-60px;bottom:-80px;width:260px;height:260px;border-radius:50%;background:radial-gradient(circle,rgba(29,91,214,.12),transparent 68%)}
.cta-band h2{margin-bottom:8px;font-size:28px}
.cta-band p{margin:0;font-size:14.5px;color:var(--ink-600)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;z-index:2}
.cta-note{margin-top:14px;font-size:12.5px;color:var(--ink-400)}

/* ===== 页脚 ===== */
.site-footer{background:var(--brand-700);color:rgba(255,255,255,.78);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{width:42px;height:42px;border-radius:12px;box-shadow:none}
.footer-brand strong{display:block;color:#fff;font-size:16px;font-weight:800;letter-spacing:-.3px}
.footer-brand span{display:block;font-size:11.5px;color:rgba(255,255,255,.6);margin-top:3px}
.footer-desc{font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.7);margin:0}
.footer-col h4{color:#fff;font-size:14.5px;margin-bottom:16px;font-weight:700}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:13.5px}
.footer-col a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:22px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:12.5px;color:rgba(255,255,255,.58);line-height:1.7}

/* ===== 响应式 ===== */
@media screen and (max-width:1024px){
  .header-inner{gap:18px;min-height:72px}
  .nav-desktop{display:none}
  .nav-toggle{display:flex}
  .header-actions .btn-outline{display:none}
  .section{padding:64px 0}
  .cat-hero{padding:32px 0 48px}
  .cat-hero-grid{grid-template-columns:1fr;gap:28px}
  .cat-hero h1{font-size:30px}
  .cat-stats{flex-direction:row;flex-wrap:wrap;gap:22px}
  .cat-stat{flex:1 1 120px}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tile-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .feature-split{grid-template-columns:1fr;gap:32px}
  .safety-card{grid-template-columns:1fr;padding:32px 30px;gap:26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  h2{font-size:25px}
}
@media screen and (max-width:640px){
  .container{padding:0 18px}
  body{font-size:15.5px}
  .section{padding:48px 0}
  h1{font-size:28px}
  h2{font-size:22px}
  .cat-hero h1{font-size:26px}
  .cat-hero-lead{font-size:15px}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .tile-grid{grid-template-columns:1fr}
  .cta-band{grid-template-columns:1fr;padding:30px 24px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .header-actions .btn-sm{display:none}
  .flow-step{grid-template-columns:52px 1fr;gap:16px}
  .flow-num{width:52px;height:52px;border-radius:16px;font-size:17px}
  .flow-step::before{left:25px;top:52px}
  .flow-card{padding:18px 20px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .scene-body{padding:18px 20px 20px}
  .safety-card{padding:26px 22px}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a-inner{padding:0 18px 18px}
}