/* roulang page: index */
:root{
  --brand:#1B5FA8;
  --brand-deep:#0F2C4C;
  --brand-soft:#E8F0FA;
  --accent:#E8853A;
  --positive:#1F9D6B;
  --page:#F6F8FB;
  --card:#FFFFFF;
  --line:#E3E9F2;
  --text:#23303F;
  --muted:#5C6B7F;
  --r-card:12px;
  --r-btn:8px;
  --r-tag:6px;
  --sh-1:0 1px 2px rgba(15,44,76,.06),0 8px 24px rgba(15,44,76,.08);
  --sh-2:0 12px 32px rgba(15,44,76,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--page);
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--brand-deep);letter-spacing:-.3px}
p{margin:0 0 14px}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:none;box-shadow:0 0 0 2px #fff,0 0 0 4px rgba(27,95,168,.55);border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(15,44,76,.09)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px;transition:height .2s ease}
.site-header.is-scrolled .header-top{height:58px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--brand-deep);letter-spacing:-.2px}
.brand:hover{color:var(--brand)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;color:var(--brand)}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:1px;line-height:1.1}
.header-actions{display:flex;align-items:center;gap:10px}
.header-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:1px solid var(--line);height:54px}
.channel-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.channel-nav a{padding:7px 14px;border-radius:var(--r-btn);font-size:15px;font-weight:500;color:var(--text)}
.channel-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.channel-nav a.active{background:var(--brand);color:#fff}
.channel-nav a.active:hover{background:var(--brand-deep);color:#fff}
.header-search{position:relative;width:250px;flex:0 0 250px}
.header-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 42px 0 14px;font-size:14px;color:var(--text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.header-search input::placeholder{color:#93A1B3}
.header-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.15)}
.header-search .search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;pointer-events:none}
.header-chips{border-top:1px solid var(--line);background:#fff}
.header-chips .container{display:flex;align-items:center;gap:10px;height:42px;overflow-x:auto;scrollbar-width:none}
.header-chips .container::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;white-space:nowrap;transition:all .18s ease}
.chip:hover{background:var(--accent);color:#fff}
.chip-label{font-size:13px;color:var(--muted);white-space:nowrap}
.menu-btn{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--brand-deep);font-size:14px;font-weight:600}
.menu-btn:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all .18s ease;white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,44,76,.18)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#cf6f28;color:#fff;transform:translateY(-1px)}
.btn-light-outline{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.62);color:#fff}
.btn-light-outline:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.arrow-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--brand)}
.arrow-link i{transition:transform .18s ease}
.arrow-link:hover i{transform:translateX(4px)}

/* ---------- Hero ---------- */
.hero{position:relative;background-image:url('/assets/images/backpic/back-1.jpg');background-size:cover;background-position:center;overflow:hidden}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,26,45,.92) 0%,rgba(15,44,76,.82) 46%,rgba(15,44,76,.52) 100%)}
.hero-inner{position:relative;z-index:2;padding:86px 20px 74px;max-width:1200px;margin:0 auto}
.hero-copy{max-width:760px;color:#fff}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 15px;border-radius:999px;background:rgba(232,133,58,.18);border:1px solid rgba(232,133,58,.55);color:#F6C39A;font-size:13px;font-weight:600;margin-bottom:20px}
.hero h1{color:#fff;font-size:38px;line-height:1.28;font-weight:800;letter-spacing:-.5px;margin-bottom:18px}
.hero-lede{color:rgba(255,255,255,.84);font-size:16px;line-height:1.9;max-width:700px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:30px}
.hero-checks{display:flex;flex-wrap:wrap;gap:10px 26px}
.hero-checks li{display:flex;align-items:center;gap:9px;font-size:14.5px;color:rgba(255,255,255,.9)}
.hero-checks i{color:var(--accent);font-size:14px}

/* ---------- 信任条 ---------- */
.trust-strip{background:#fff;border-bottom:1px solid var(--line)}
.trust-items{display:flex;flex-wrap:wrap;align-items:center;gap:16px 46px;padding:20px 0}
.trust-item{display:flex;align-items:center;gap:12px}
.trust-badge{display:inline-flex;align-items:center;justify-content:center;min-width:56px;height:34px;padding:0 10px;border-radius:var(--r-tag);background:var(--brand-soft);color:var(--brand);font-weight:800;font-size:16px}
.trust-item span{font-size:14px;color:var(--muted)}

/* ---------- 通用板块 ---------- */
.section{padding:80px 0}
.section-white{background:#fff}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:10px 30px;border-left:4px solid var(--brand);padding-left:18px;margin-bottom:38px}
.sec-head h2{font-size:27px;line-height:1.4}
.sec-head .sec-note{max-width:430px;font-size:14px;color:var(--muted);line-height:1.75}
.sec-sub{font-size:15px;color:var(--muted);max-width:760px;margin-bottom:32px}

/* ---------- 痛点 ---------- */
.pain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.pain-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform .18s ease,box-shadow .18s ease}
.pain-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.pain-card:nth-child(2){margin-top:26px}
.pain-card:nth-child(4){margin-top:26px}
.pain-top{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.pain-icon{width:40px;height:40px;flex:0 0 40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;background:var(--brand-soft);color:var(--brand);font-size:16px}
.pain-top strong{font-size:17px;color:var(--brand-deep);font-weight:700}
.pain-card p{font-size:15px;color:var(--muted);line-height:1.8}

/* ---------- 对比表 ---------- */
.table-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.cmp-table{width:100%;border-collapse:collapse}
.cmp-table thead th{position:sticky;top:0;background:var(--brand-deep);color:#fff;font-size:14.5px;font-weight:600;padding:15px 20px;text-align:left;border:none}
.cmp-table thead th:last-child{background:var(--brand)}
.cmp-table tbody td{padding:15px 20px;font-size:15px;border-top:1px solid var(--line);vertical-align:top}
.cmp-table tbody td:first-child{color:var(--muted);width:22%}
.cmp-table tbody td:nth-child(2){color:#7C8899;width:34%}
.cmp-table tbody td:last-child{background:var(--brand-soft);color:var(--brand-deep);font-weight:500}
.cmp-table tbody tr:hover td{background:#FBFCFE}
.cmp-table tbody tr:hover td:last-child{background:#DCE9F7}

/* ---------- 解决方案 ---------- */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.split-body h2{font-size:27px;margin-bottom:16px;line-height:1.4}
.split-body p{color:var(--muted);font-size:15.5px}
.check-list{margin-top:22px;display:grid;gap:13px}
.check-list li{display:flex;gap:11px;font-size:15.5px;color:var(--text);line-height:1.7}
.check-list i{color:var(--positive);margin-top:6px;font-size:14px}
.media-stack{position:relative}
.media-stack .main-img{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-2);aspect-ratio:4/3}
.media-stack .main-img img{width:100%;height:100%;object-fit:cover}
.mini-card{position:absolute;left:-26px;bottom:-26px;width:214px;background:#fff;border-radius:var(--r-card);box-shadow:var(--sh-2);padding:12px;border:1px solid var(--line)}
.mini-card .thumb{border-radius:8px;aspect-ratio:16/10;overflow:hidden}
.mini-card .thumb img{width:100%;height:100%;object-fit:cover}
.mini-card strong{display:block;font-size:14px;color:var(--brand-deep);margin-top:10px;line-height:1.5}
.mini-card span{font-size:12.5px;color:var(--muted)}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.step{position:relative;padding:0 20px 0 0}
.step:not(:last-child)::after{content:"";position:absolute;top:24px;right:6px;left:calc(100% - 26px);border-top:1px dashed var(--line);display:none}
.step-num{font-size:40px;font-weight:800;color:var(--brand);line-height:1;letter-spacing:-1px;font-variant-numeric:tabular-nums}
.step-line{height:2px;background:var(--line);margin:18px 0 18px;position:relative}
.step-line::before{content:"";position:absolute;left:0;top:-1px;width:46px;height:4px;background:var(--brand)}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- 评分板 ---------- */
.score-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start}
.score-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden;transition:transform .18s ease,box-shadow .18s ease}
.score-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2)}
.score-card:nth-child(2){margin-top:32px}
.score-card:nth-child(3){margin-top:64px}
.score-card .thumb{aspect-ratio:16/9;overflow:hidden}
.score-card .thumb img{width:100%;height:100%;object-fit:cover}
.score-body{padding:20px}
.score-body h3{font-size:17px;margin-bottom:12px}
.score-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.score-bar{flex:1;height:6px;border-radius:999px;background:var(--brand-soft);overflow:hidden}
.score-bar i{display:block;height:100%;background:var(--brand);border-radius:999px}
.score-val{font-size:15px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.score-body p{font-size:14.5px;color:var(--muted)}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.tag{display:inline-block;padding:3px 10px;border-radius:var(--r-tag);background:var(--brand-soft);color:var(--brand);font-size:12.5px}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:24px;transition:transform .18s ease,box-shadow .18s ease}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat-num{font-size:44px;font-weight:800;color:var(--brand-deep);line-height:1.05;letter-spacing:-1.4px;font-variant-numeric:tabular-nums}
.stat-num small{font-size:15px;font-weight:600;color:var(--muted);margin-left:4px;letter-spacing:0}
.stat-label{font-size:14.5px;color:var(--muted);margin-top:8px}
.stat-trend{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--positive);margin-top:10px}

/* ---------- 证言 ---------- */
.quote-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:24px;align-items:start}
.quote-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:26px}
.quote-card.big{display:flex;gap:24px;align-items:flex-start}
.quote-card.big .thumb{width:210px;flex:0 0 210px;aspect-ratio:4/3;border-radius:10px;overflow:hidden}
.quote-card.big .thumb img{width:100%;height:100%;object-fit:cover}
.quote-card blockquote{margin:0 0 14px;font-size:17px;line-height:1.8;color:var(--brand-deep);font-weight:500}
.quote-meta{font-size:14px;color:var(--muted)}
.quote-side{display:grid;gap:24px}
.quote-side .quote-card blockquote{font-size:16px}

/* ---------- 人群 ---------- */
.people-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.person-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;transition:transform .18s ease,box-shadow .18s ease}
.person-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.person-card i{font-size:18px;color:var(--brand);margin-bottom:12px;display:block}
.person-card h3{font-size:16.5px;margin-bottom:6px}
.person-card p{font-size:14.5px;color:var(--muted)}

/* ---------- 场景 ---------- */
.scene-list{border-top:1px solid var(--line)}
.scene{display:grid;grid-template-columns:280px 1fr;gap:32px;align-items:center;padding:26px 0;border-bottom:1px solid var(--line)}
.scene .thumb{aspect-ratio:16/10;border-radius:10px;overflow:hidden}
.scene .thumb img{width:100%;height:100%;object-fit:cover}
.scene h3{font-size:19px;margin-bottom:8px}
.scene p{font-size:15px;color:var(--muted)}
.scene-time{display:inline-block;margin-bottom:10px;padding:3px 11px;border-radius:var(--r-tag);background:rgba(232,133,58,.14);color:#B4611F;font-size:12.5px;font-weight:600}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:32px;align-items:start}
.news-main{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);overflow:hidden}
.news-main .thumb{aspect-ratio:16/9;overflow:hidden}
.news-main .thumb img{width:100%;height:100%;object-fit:cover}
.news-main .news-body{padding:22px}
.news-main h3{font-size:20px;margin:10px 0 10px;line-height:1.5}
.news-main p{font-size:15px;color:var(--muted)}
.news-list{display:grid;gap:0}
.news-item{display:flex;justify-content:space-between;gap:18px;padding:17px 0;border-bottom:1px solid var(--line)}
.news-item:first-child{padding-top:0}
.news-item h4{font-size:16px;font-weight:600;line-height:1.6}
.news-item time{font-size:13px;color:var(--muted);white-space:nowrap}
.news-foot{margin-top:20px}

/* ---------- 入口卡 ---------- */
.entry-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.entry-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-1);padding:22px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#C9DBEF}
.entry-card i{font-size:17px;color:var(--brand);display:block;margin-bottom:12px}
.entry-card h3{font-size:16.5px;margin-bottom:6px;color:var(--brand-deep)}
.entry-count{font-size:13px;color:var(--muted);margin-bottom:8px;display:block}
.entry-card p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- 设备 ---------- */
.device-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.device-item{text-align:left;padding:24px;border-radius:var(--r-card);background:var(--brand-soft);border:1px solid #D6E4F5}
.device-item i{font-size:20px;color:var(--brand);display:block;margin-bottom:12px}
.device-item h3{font-size:16.5px;margin-bottom:6px}
.device-item p{font-size:14px;color:var(--muted)}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:920px;margin:0 auto}
.accordion-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-card)!important;margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.accordion-button{background:#fff;color:var(--brand-deep);font-size:16.5px;font-weight:600;padding:18px 22px;box-shadow:none!important;line-height:1.6}
.accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand);box-shadow:inset 3px 0 0 var(--brand)!important}
.accordion-button::after{background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;width:auto;height:auto;transition:transform .2s ease;color:var(--brand)}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand)}
.accordion-body{padding:6px 22px 22px 25px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- 深色数据带 ---------- */
.dark-band{background:var(--brand-deep);padding:72px 0;color:#fff}
.dark-band .sec-head{border-left-color:var(--accent)}
.dark-band .sec-head h2{color:#fff}
.dark-band .sec-note{color:rgba(255,255,255,.66)}
.band-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:24px}
.band-item{border-left:1px solid rgba(255,255,255,.16);padding-left:18px}
.band-num{font-size:40px;font-weight:800;line-height:1.1;letter-spacing:-1.2px;color:#fff;font-variant-numeric:tabular-nums}
.band-num small{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin-left:4px}
.band-label{font-size:14px;color:rgba(255,255,255,.66);margin-top:8px}

/* ---------- 尾部 CTA ---------- */
.cta-section{position:relative;background-image:url('/assets/images/backpic/back-6.jpg');background-size:cover;background-position:center}
.cta-section::after{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(15,44,76,.95) 0%,rgba(15,44,76,.86) 55%,rgba(27,95,168,.78) 100%)}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding:76px 20px;max-width:1200px;margin:0 auto}
.cta-inner h2{color:#fff;font-size:29px;line-height:1.42;margin-bottom:16px}
.cta-inner p{color:rgba(255,255,255,.78);font-size:15.5px;max-width:520px;margin-bottom:24px}
.cta-form{background:#fff;border-radius:16px;box-shadow:var(--sh-2);padding:28px}
.cta-form h3{font-size:18px;margin-bottom:6px}
.cta-form .form-hint{font-size:13.5px;color:var(--muted);margin-bottom:18px}
.form-field{margin-bottom:16px}
.form-field label{display:block;font-size:14px;font-weight:600;color:var(--brand-deep);margin-bottom:7px}
.form-field label em{color:#C0392B;font-style:normal;margin-left:3px}
.form-field input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 14px;font-size:15px;color:var(--text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.form-field input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 2px rgba(27,95,168,.18)}
.form-field input::placeholder{color:#9AA7B8}
.form-privacy{font-size:12.5px;color:var(--muted);margin-top:12px;line-height:1.7}
.form-note{font-size:13px;color:var(--positive);margin-top:8px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0B2038;color:rgba(255,255,255,.72);padding:58px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .brand:hover{color:#fff}
.site-footer .brand small{color:rgba(255,255,255,.5)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);margin-bottom:14px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.66);padding:6px 0}
.footer-col a:hover{color:#fff}
.footer-form{display:flex;gap:8px;margin-top:6px}
.footer-form input{flex:1;height:42px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.07);color:#fff;padding:0 12px;font-size:14px}
.footer-form input::placeholder{color:rgba(255,255,255,.42)}
.footer-form input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 2px rgba(232,133,58,.25)}
.footer-form button{height:42px;padding:0 18px;border-radius:var(--r-btn);border:none;background:var(--accent);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .18s ease}
.footer-form button:hover{background:#cf6f28}
.footer-bottom{margin-top:46px;border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5)}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#fff}

/* ---------- 移动抽屉 ---------- */
.offcanvas{background:#fff}
.offcanvas-header{border-bottom:1px solid var(--line)}
.drawer-nav a{display:block;padding:13px 4px;font-size:16px;color:var(--text);border-bottom:1px solid var(--line);font-weight:500}
.drawer-nav a.active{color:var(--brand);font-weight:700}
.drawer-search{position:relative;margin:18px 0}
.drawer-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 40px 0 14px;font-size:15px}
.drawer-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .entry-grid{grid-template-columns:repeat(3,1fr)}
  .band-grid{grid-template-columns:repeat(3,1fr)}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991px){
  .section{padding:56px 0}
  .hero h1{font-size:31px}
  .hero-inner{padding:64px 20px 56px}
  .split{grid-template-columns:1fr;gap:34px}
  .media-stack{order:2}
  .mini-card{position:static;width:100%;margin-top:16px}
  .steps{grid-template-columns:repeat(2,1fr);gap:30px 24px}
  .score-grid{grid-template-columns:repeat(2,1fr)}
  .score-card:nth-child(3){margin-top:0}
  .score-card:nth-child(2){margin-top:0}
  .quote-grid{grid-template-columns:1fr}
  .quote-card.big{flex-direction:column}
  .quote-card.big .thumb{width:100%;flex:none;aspect-ratio:16/9}
  .people-grid{grid-template-columns:repeat(2,1fr)}
  .entry-grid{grid-template-columns:repeat(2,1fr)}
  .device-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:56px 20px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .trust-items{gap:14px 30px}
}
@media (max-width:767px){
  body{font-size:15.5px}
  .section{padding:44px 0}
  .hero h1{font-size:27px;letter-spacing:-.3px}
  .sec-head h2{font-size:22px}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:26px}
  .pain-grid{grid-template-columns:1fr}
  .pain-card:nth-child(2),.pain-card:nth-child(4){margin-top:0}
  .steps{grid-template-columns:1fr;gap:26px}
  .score-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat-num{font-size:36px}
  .people-grid{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .device-grid{grid-template-columns:1fr}
  .band-grid{grid-template-columns:repeat(2,1fr);gap:26px 18px}
  .band-num{font-size:32px}
  .scene{grid-template-columns:1fr;gap:16px;padding:22px 0}
  .news-item{flex-direction:column;gap:4px}
  .cta-inner h2{font-size:23px}
  .cta-form{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .trust-items{flex-direction:column;align-items:flex-start;gap:14px}
}
@media (max-width:520px){
  .hero-checks{flex-direction:column;gap:8px}
  .btn-brand,.btn-ghost,.btn-accent{width:100%}
  .hero-cta{flex-direction:column}
  .stat-grid{grid-template-columns:1fr}
  .band-grid{grid-template-columns:1fr}
  .header-top{height:60px}
  .brand{font-size:17px}
  .brand-mark{width:30px;height:30px;flex:0 0 30px}
}

/* roulang page: category1 */
:root{
 --brand:#1B5FA8;
 --brand-deep:#0F2C4C;
 --brand-soft:#E8F0FA;
 --accent:#E8853A;
 --positive:#1F9D6B;
 --page:#F6F8FB;
 --card:#FFFFFF;
 --line:#E3E9F2;
 --text:#23303F;
 --muted:#5C6B7F;
 --r-card:12px;
 --r-btn:8px;
 --r-tag:6px;
 --sh-1:0 1px 2px rgba(15,44,76,.06),0 8px 24px rgba(15,44,76,.08);
 --sh-2:0 12px 32px rgba(15,44,76,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
 margin:0;
 font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
 font-size:16px;
 line-height:1.85;
 color:var(--text);
 background:var(--page);
 -webkit-font-smoothing:antialiased;
 font-variant-numeric:tabular-nums;
}
img{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease}
a:hover{color:var(--brand-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;color:var(--brand-deep);font-weight:700;letter-spacing:-.2px}
p{margin:0 0 14px}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}

/* ---------- 顶部导航 ---------- */
.site-header{position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s ease}
.site-header.is-scrolled{box-shadow:0 6px 22px rgba(15,44,76,.09)}
.header-top{display:flex;align-items:center;justify-content:space-between;gap:18px;height:66px;transition:height .2s ease}
.site-header.is-scrolled .header-top{height:58px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--brand-deep);letter-spacing:-.2px}
.brand:hover{color:var(--brand)}
.brand-mark{width:34px;height:34px;flex:0 0 34px;color:var(--brand)}
.brand small{display:block;font-size:11px;font-weight:500;color:var(--muted);letter-spacing:1px;line-height:1.1;font-weight:500}
.header-actions{display:flex;align-items:center;gap:10px}
.lang-chip{display:inline-flex;align-items:center;height:34px;padding:0 12px;border-radius:var(--r-tag);background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:600}
.header-nav{display:flex;align-items:center;justify-content:space-between;gap:24px;border-top:1px solid var(--line);height:54px}
.channel-nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap}
.channel-nav a{padding:7px 14px;border-radius:var(--r-btn);font-size:15px;font-weight:500;color:var(--text)}
.channel-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.channel-nav a.active{background:var(--brand);color:#fff}
.channel-nav a.active:hover{background:var(--brand-deep);color:#fff}
.header-search{position:relative;width:250px;flex:0 0 250px}
.header-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 42px 0 14px;font-size:14px;color:var(--text);background:#fff;transition:border-color .18s ease,box-shadow .18s ease}
.header-search input::placeholder{color:#93A1B3}
.header-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.15)}
.header-search .search-icon{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:14px;pointer-events:none}
.header-chips{border-top:1px solid var(--line);background:#fff}
.header-chips .container{display:flex;align-items:center;gap:10px;height:42px;overflow-x:auto;scrollbar-width:none}
.header-chips .container::-webkit-scrollbar{display:none}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 13px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:13px;white-space:nowrap;transition:all .18s ease}
.chip:hover{background:var(--accent);color:#fff}
.chip.is-on{background:var(--accent);color:#fff}
.chip-label{font-size:13px;color:var(--muted);white-space:nowrap}
.menu-btn{display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--brand-deep);font-size:14px;font-weight:600}
.menu-btn:hover{border-color:var(--brand);color:var(--brand)}

/* ---------- 按钮 ---------- */
.btn-brand,.btn-ghost,.btn-accent,.btn-light-outline{
 display:inline-flex;align-items:center;justify-content:center;gap:8px;
 height:46px;padding:0 24px;border-radius:var(--r-btn);
 font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
 transition:all .18s ease;white-space:nowrap;
}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(15,44,76,.18)}
.btn-ghost{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand-deep)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#cf6f28;color:#fff;transform:translateY(-1px)}
.btn-light-outline{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.62);color:#fff}
.btn-light-outline:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-sm{height:38px;padding:0 16px;font-size:14px}
.arrow-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--brand);background:none;border:0;padding:6px 0;cursor:pointer}
.arrow-link i{transition:transform .18s ease}
.arrow-link:hover i{transform:translateX(4px)}

/* ---------- 分类头部 ---------- */
.cat-head{background:#fff;border-bottom:1px solid var(--line);padding:26px 0 28px}
.breadcrumb-line{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--muted);margin-bottom:14px}
.breadcrumb-line a{color:var(--muted)}
.breadcrumb-line a:hover{color:var(--brand)}
.breadcrumb-line i{font-size:10px;color:#AEBACB}
.cat-head h1{font-size:32px;line-height:1.32;letter-spacing:-.5px;margin-bottom:10px}
.cat-lede{max-width:880px;color:var(--muted);font-size:15px;margin:0 0 16px}
.cat-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;font-size:13.5px;color:var(--muted)}
.cat-meta strong{color:var(--brand);font-weight:800;font-size:17px}
.meta-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--positive);margin-right:7px}

/* ---------- 筛选工具条 ---------- */
.toolbar-wrap{position:sticky;top:112px;z-index:1020;background:rgba(246,248,251,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--line);padding:14px 0}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px;justify-content:space-between}
.filter-chips{display:flex;flex-wrap:wrap;align-items:center;gap:8px;flex:1 1 480px}
.filter-chips .chip{cursor:pointer;border:1px solid transparent}
.filter-chips .chip:hover{border-color:var(--accent)}
.toolbar-right{display:flex;align-items:center;gap:10px;flex:0 1 auto}
.sort-select{height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:#fff;color:var(--text);font-size:14px;padding:0 34px 0 14px;appearance:none;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%235C6B7F'%3E%3Cpath d='M8 11.5 3.5 7h9z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:14px;cursor:pointer}
.sort-select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.15)}
.toolbar-search{position:relative;width:230px;flex:0 0 230px}
.toolbar-search input{width:100%;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 40px 0 14px;font-size:14px;background:#fff;color:var(--text)}
.toolbar-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(27,95,168,.15)}
.toolbar-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:13px}
.filter-toggle{display:none}

/* ---------- 板块通用 ---------- */
.section{padding:80px 0}
.section-white{background:#fff}
.section-tight{padding-top:56px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;border-left:4px solid var(--brand);padding-left:18px;margin-bottom:34px}
.section-head h2{font-size:26px;line-height:1.4}
.section-head p{color:var(--muted);font-size:14.5px;margin:6px 0 0;max-width:640px}
.section-head .head-right{font-size:13.5px;color:var(--muted);font-weight:500}

/* ---------- 编辑精选 ---------- */
.feature-card{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:0;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);position:relative;transition:box-shadow .18s ease,transform .18s ease}
.feature-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px)}
.feature-media{position:relative;min-height:320px}
.feature-media img{width:100%;height:100%;object-fit:cover}
.feature-body{padding:32px 34px;display:flex;flex-direction:column;gap:14px}
.badge-pick{position:absolute;top:16px;left:16px;display:inline-flex;align-items:center;gap:7px;padding:5px 13px;border-radius:var(--r-tag);background:var(--accent);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.3px}
.feature-body h3{font-size:22px;line-height:1.5}
.feature-body h3 a{color:var(--brand-deep)}
.feature-body h3 a:hover{color:var(--brand)}
.feature-summary{color:var(--muted);font-size:15px;margin:0}
.score-row{display:flex;align-items:center;gap:12px}
.score-track{flex:1;height:6px;border-radius:999px;background:var(--brand-soft);overflow:hidden}
.score-fill{height:100%;border-radius:999px;background:var(--brand)}
.score-num{font-weight:800;color:var(--brand-deep);font-size:15px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-tag);background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:500}
.tag-warm{background:#FDEEE3;color:#B15A1C}
.meta-line{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13.5px;color:var(--muted)}
.meta-line i{margin-right:6px;color:#93A1B3}

/* ---------- 卡片列表 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.v-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;height:100%}
.v-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:#D3E0EF}
.v-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-soft)}
.v-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto}
.v-body h3{font-size:17.5px;line-height:1.55;font-weight:600}
.v-body h3 a{color:var(--brand-deep)}
.v-body h3 a:hover{color:var(--brand)}
.v-excerpt{font-size:14.5px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.75}
.v-body .meta-line{margin-top:auto;padding-top:6px}
.list-foot{display:flex;justify-content:center;margin-top:34px}

/* ---------- 数据条 ---------- */
.stat-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.stat-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.stat-num{font-size:36px;font-weight:800;color:var(--brand-deep);line-height:1.15;letter-spacing:-1px}
.stat-num small{font-size:14px;font-weight:600;color:var(--muted);margin-left:6px;letter-spacing:0}
.stat-label{font-size:14px;color:var(--muted);margin-top:4px}
.stat-trend{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--positive);font-weight:600;margin-top:8px}

/* ---------- 专题与标签 ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.topic-card{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;box-shadow:var(--sh-1);transition:transform .18s ease,box-shadow .18s ease}
.topic-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2)}
.topic-card i{font-size:20px;color:var(--brand)}
.topic-card h3{font-size:16.5px;line-height:1.5}
.topic-card p{font-size:14px;color:var(--muted);margin:0}
.topic-count{font-size:13px;color:var(--accent);font-weight:700}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag-cloud a{padding:6px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--muted);font-size:13.5px}
.tag-cloud a:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- FAQ ---------- */
.faq .accordion-item{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;margin-bottom:14px;overflow:hidden;box-shadow:0 1px 2px rgba(15,44,76,.05)}
.faq .accordion-button{background:#fff;color:var(--brand-deep);font-weight:600;font-size:16px;line-height:1.6;padding:20px 24px;border-radius:0;box-shadow:none}
.faq .accordion-button:not(.collapsed){background:var(--brand-soft);color:var(--brand);box-shadow:inset 4px 0 0 var(--brand)}
.faq .accordion-button:focus{box-shadow:0 0 0 3px rgba(27,95,168,.18);z-index:2}
.faq .accordion-button::after{width:16px;height:16px;background-size:16px;background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%231B5FA8'%3E%3Cpath d='M8 3v10M3 8h10' stroke='%231B5FA8' stroke-width='2' fill='none'/%3E%3C/svg%3E")}
.faq .accordion-button:not(.collapsed)::after{background-image:url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8h10' stroke='%231B5FA8' stroke-width='2' fill='none'/%3E%3C/svg%3E")}
.faq .accordion-body{padding:4px 24px 22px;color:var(--muted);font-size:15px}

/* ---------- 底部 CTA ---------- */
.cta-band{position:relative;background-image:url('/assets/images/backpic/back-2.jpg');background-size:cover;background-position:center;color:#fff;padding:66px 0}
.cta-band::after{content:"";position:absolute;inset:0;background:linear-gradient(96deg,rgba(15,44,76,.96) 0%,rgba(15,44,76,.82) 52%,rgba(15,44,76,.6) 100%)}
.cta-inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px}
.cta-inner h2{color:#fff;font-size:26px;line-height:1.45;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.82);margin:0;font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.74);padding:62px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;padding-bottom:44px}
.site-footer .brand{color:#fff;margin-bottom:14px}
.site-footer .brand-mark{color:#7FB2E6}
.site-footer .brand small{color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin:0 0 10px}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:14px;font-weight:700}
.footer-col a{display:block;color:rgba(255,255,255,.72);font-size:14px;padding:5px 0}
.footer-col a:hover{color:#fff}
.footer-form{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.footer-form input{flex:1 1 150px;height:44px;border-radius:var(--r-btn);border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.08);color:#fff;padding:0 14px;font-size:14px}
.footer-form input::placeholder{color:rgba(255,255,255,.5)}
.footer-form input:focus{outline:none;border-color:#7FB2E6;box-shadow:0 0 0 3px rgba(127,178,230,.28)}
.footer-form button{height:44px;padding:0 20px;border:0;border-radius:var(--r-btn);background:var(--accent);color:#fff;font-size:14px;font-weight:700;cursor:pointer;transition:background .18s ease}
.footer-form button:hover{background:#cf6f28}
.footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:18px 0;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.6)}
.footer-bottom a{color:rgba(255,255,255,.72)}
.footer-bottom a:hover{color:#fff}

/* ---------- 抽屉 ---------- */
.offcanvas{border-left:1px solid var(--line)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;margin-bottom:18px}
.drawer-nav a{padding:11px 14px;border-radius:var(--r-btn);color:var(--text);font-weight:600;font-size:15px}
.drawer-nav a:hover{background:var(--brand-soft);color:var(--brand)}
.drawer-nav a.active{background:var(--brand);color:#fff}
.drawer-search{position:relative;margin-bottom:16px}
.drawer-search input{width:100%;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);padding:0 42px 0 14px;font-size:14px}
.drawer-search i{position:absolute;right:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.drawer-chips{display:flex;flex-wrap:wrap;gap:8px}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
 .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
 .feature-media{min-height:280px}
}
@media (max-width:991px){
 .header-nav,.header-chips{display:none}
 .header-top{height:62px}
 .toolbar-wrap{position:static;top:auto}
 .filter-chips,.toolbar-right{display:none}
 .filter-toggle{display:inline-flex}
 .section{padding:56px 0}
 .cat-head h1{font-size:27px}
 .feature-card{grid-template-columns:1fr}
 .feature-media{min-height:220px;aspect-ratio:16/9}
 .stat-strip{grid-template-columns:repeat(2,minmax(0,1fr))}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
 .section{padding:44px 0}
 .section-head h2{font-size:22px}
 .cat-head h1{font-size:24px}
 .card-grid{grid-template-columns:1fr}
 .topic-grid{grid-template-columns:1fr}
 .cta-inner h2{font-size:22px}
 .btn-brand,.btn-accent{height:44px;padding:0 20px;font-size:14.5px}
}
@media (max-width:520px){
 .container{padding-left:16px;padding-right:16px}
 .stat-strip{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr}
 .cat-meta{gap:8px 14px}
 .brand{font-size:17px}
}

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}