/* roulang page: index */
:root{
  --bs-primary:#1D6FD0;
  --bs-primary-rgb:29,111,208;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#1A2433;
  --bs-body-bg:#FFFFFF;
  --bs-border-radius:10px;
  --bs-link-color:#1D6FD0;
  --bs-link-hover-color:#155AAE;
  --brand:#1D6FD0;
  --brand-deep:#155AAE;
  --brand-soft:#E8F1FC;
  --coral:#F2705A;
  --ink:#1A2433;
  --ink-2:#5B6B82;
  --ink-3:#8A97A8;
  --line:#E3EAF3;
  --bg-alt:#F5F8FC;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(23,60,110,.06);
  --shadow-hover:0 14px 32px rgba(23,60,110,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--bs-body-font-family);color:var(--ink);background:var(--bs-body-bg);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep);text-decoration:none}
h1,h2,h3,h4,h5{margin:0;color:var(--ink);font-weight:700;line-height:1.35;letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- layout shell ---------- */
.shell{display:flex;align-items:flex-start;min-height:100vh}
.page-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- side rail nav ---------- */
.side-rail{
  flex:0 0 232px;width:232px;position:sticky;top:0;height:100vh;
  background:#fff;border-right:1px solid var(--line);
  padding:26px 16px 20px;display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;z-index:1040;
}
.rail-brand{display:flex;align-items:center;gap:10px}
.rail-logo{position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:11px;background:var(--brand);box-shadow:0 6px 14px rgba(29,111,208,.25)}
.rail-logo::before{content:"";position:absolute;top:9px;left:9px;width:8px;height:8px;border-radius:50%;background:#fff}
.rail-logo::after{content:"";position:absolute;right:9px;bottom:9px;width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.72)}
.rail-brand-text strong{display:block;font-size:15px;line-height:1.3;color:var(--ink)}
.rail-brand-text small{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.4px}
.rail-nav{display:flex;flex-direction:column;gap:4px}
.rail-link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--ink-2);font-size:14px;font-weight:500;border-left:3px solid transparent;
  transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.rail-link i{width:16px;text-align:center;font-size:13.5px;opacity:.85}
.rail-link:hover{background:var(--bg-alt);color:var(--brand)}
.rail-link.is-active{background:var(--brand-soft);color:var(--brand-deep);border-left-color:var(--brand);font-weight:600}
.rail-divider{height:1px;background:var(--line);margin:2px 0}
.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.rail-copy{font-size:11px;color:var(--ink-3);line-height:1.6;margin:0}

/* ---------- mobile bar ---------- */
.mobile-bar{display:none}
.mobile-brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:700;font-size:15px}
.mobile-brand:hover{color:var(--brand)}
.mobile-brand .rail-logo{flex:0 0 30px;width:30px;height:30px;border-radius:9px}
.mobile-brand .rail-logo::before{width:7px;height:7px;top:7px;left:7px}
.mobile-brand .rail-logo::after{width:7px;height:7px;right:7px;bottom:7px}
.mobile-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:all .2s ease;
}
.mobile-toggle:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.offcanvas{border-right:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:700}
.offcanvas-body .rail-link{padding:12px 12px}
.offcanvas-body .rail-nav{gap:2px}

/* ---------- buttons / pills ---------- */
.btn{border-radius:10px;font-weight:600;font-size:15px;padding:11px 22px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.5;transition:all .22s ease;box-shadow:none}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px var(--brand-soft);outline:none}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(29,111,208,.24)}
.btn-brand:active{background:var(--brand);border-color:var(--brand);transform:translateY(0);box-shadow:none}
.btn-outline-brand{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand-soft);border-color:var(--brand-deep);color:var(--brand-deep);transform:translateY(-1px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-lg{padding:13px 26px;font-size:16px;border-radius:11px}
.btn-sm{padding:8px 16px;font-size:13.5px;border-radius:9px}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow i{font-size:12px;transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(3px)}
.pill{
  display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand-deep);
  border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;
}
.badge-soft{display:inline-block;background:var(--brand-soft);color:var(--brand-deep);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;line-height:1.8}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:var(--brand-deep);border-radius:999px;padding:5px 14px;font-size:12.5px;font-weight:600;letter-spacing:.4px}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}

/* ---------- sections ---------- */
.sec{padding:72px 0}
.sec-alt{background:var(--bg-alt)}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-head h2{font-size:30px;position:relative;padding-left:16px}
.sec-head h2::before{content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:2px;background:var(--brand)}
.sec-head p{margin-top:14px;color:var(--ink-2);font-size:15.5px;line-height:1.85}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center}
.sec-head.center h2{padding-left:0}
.sec-head.center h2::before{left:50%;top:auto;bottom:-14px;transform:translateX(-50%);width:44px;height:3px}
.sec-head.center p{margin-top:26px}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(180deg,#F2F7FD 0%,#FFFFFF 100%);padding:64px 0 56px;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:rgba(29,111,208,.06);pointer-events:none}
.hero-title{font-size:42px;line-height:1.28;margin-top:18px;letter-spacing:.4px}
.hero-lead{margin-top:20px;color:var(--ink-2);font-size:16px;line-height:1.9;max-width:600px}
.check-list{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:22px}
.check-list li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);font-weight:500}
.check-list i{color:var(--brand);font-size:15px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.pill-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-figure{margin:0;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-hover);border:1px solid var(--line);background:#EDF3FB;aspect-ratio:16/11}
.hero-figure img{width:100%;height:100%;object-fit:cover}

/* ---------- metrics ---------- */
.metrics{padding:0 0 8px}
.metric-grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;
}
.metric{padding:30px 24px;border-left:1px solid var(--line)}
.metric:first-child{border-left:none}
.metric .num{font-size:44px;font-weight:800;color:var(--ink);line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-1px}
.metric .unit{font-size:14px;font-weight:700;color:var(--brand);margin-left:6px}
.metric p{margin-top:10px;font-size:13.5px;color:var(--ink-2);line-height:1.6}

/* ---------- bento services ---------- */
.bento{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.bento-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);display:flex;flex-direction:column;gap:10px;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;min-height:170px;
}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BFD8F5}
.bento-card .b-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
  display:inline-flex;align-items:center;justify-content:center;font-size:18px;
}
.bento-card h3{font-size:18px;font-weight:600}
.bento-card p{font-size:14px;color:var(--ink-2);line-height:1.75}
.bento-card .link-arrow{margin-top:auto;padding-top:6px}
.bento-lg{grid-column:span 2;grid-row:span 2;padding:0;overflow:hidden;background:#fff;gap:0}
.bento-lg .bento-media{aspect-ratio:16/8;background:#EDF3FB;overflow:hidden}
.bento-lg .bento-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.bento-lg:hover .bento-media img{transform:scale(1.03)}
.bento-lg .bento-body{padding:26px 28px 28px;display:flex;flex-direction:column;gap:10px;flex:1}
.bento-lg h3{font-size:22px}

/* ---------- compare ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 44px 1fr;align-items:stretch;margin-top:6px}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow);
}
.compare-col h3{font-size:19px;display:flex;align-items:center;gap:10px;margin-bottom:16px}
.compare-col h3 i{font-size:16px}
.compare-bad h3 i{color:#B9C4D2}
.compare-good{border-color:#BFD8F5;background:linear-gradient(180deg,#F6FAFF 0%,#FFFFFF 60%)}
.compare-good h3 i{color:var(--brand)}
.compare-col li{position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2);line-height:1.8;margin-bottom:12px}
.compare-col li:last-child{margin-bottom:0}
.compare-col li::before{content:"—";position:absolute;left:0;top:0;color:#C3CFDD}
.compare-good li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;color:var(--brand);font-size:12px;top:6px}
.compare-divider{position:relative;display:flex;justify-content:center;align-items:center}
.compare-divider::before{content:"";position:absolute;top:12px;bottom:12px;width:1px;background:var(--line)}
.compare-divider .dot{width:14px;height:14px;border-radius:50%;background:#fff;border:2px solid var(--brand);position:relative;z-index:1}

/* ---------- topic entries ---------- */
.topic-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.topic-card{
  display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;color:var(--ink);
}
.topic-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BFD8F5;color:var(--ink)}
.topic-card .t-media{flex:0 0 96px;width:96px;height:72px;border-radius:12px;overflow:hidden;background:#EDF3FB}
.topic-card .t-media img{width:100%;height:100%;object-fit:cover}
.topic-card .t-body strong{display:block;font-size:16.5px;margin-bottom:4px}
.topic-card .t-body span{display:block;font-size:13.5px;color:var(--ink-2);line-height:1.7}

/* ---------- timeline ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;margin-top:14px}
.timeline::before{content:"";position:absolute;left:4%;right:4%;top:9px;border-top:2px dashed #D3E2F4}
.tl-item{position:relative;padding-top:38px}
.tl-dot{position:absolute;left:0;top:0;width:18px;height:18px;border-radius:50%;background:var(--brand);box-shadow:0 0 0 5px rgba(29,111,208,.13)}
.tl-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px;box-shadow:var(--shadow);height:100%}
.tl-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--coral);letter-spacing:.5px;margin-bottom:8px}
.tl-card h3{font-size:16px;margin-bottom:8px}
.tl-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:0 4px 16px rgba(23,60,110,.045);transition:transform .25s ease,box-shadow .25s ease;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.review-card p{font-size:14.5px;color:var(--ink-2);line-height:1.85;min-height:78px}
.review-meta{display:flex;align-items:center;gap:12px;margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--brand-soft);color:var(--brand-deep);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 40px}
.review-meta strong{display:block;font-size:14px;color:var(--ink)}
.review-meta span{font-size:12px;color:var(--ink-3)}

/* ---------- changelog ---------- */
.log-list{display:flex;flex-direction:column;gap:0;border-left:2px solid var(--brand-soft);padding-left:24px;margin-left:6px}
.log-item{position:relative;padding:0 0 26px}
.log-item:last-child{padding-bottom:0}
.log-item::before{content:"";position:absolute;left:-31px;top:8px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--brand)}
.log-tag{display:inline-block;font-size:12px;font-weight:700;color:var(--brand-deep);background:var(--brand-soft);border-radius:6px;padding:1px 9px;margin-bottom:6px}
.log-item h3{font-size:16.5px;margin-bottom:6px}
.log-item p{font-size:14px;color:var(--ink-2);line-height:1.75}

/* ---------- news ---------- */
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);height:100%;display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.news-card:hover,.news-card:focus-within{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#BFD8F5}
.news-media{display:block;aspect-ratio:16/9;background:#EDF3FB;overflow:hidden}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-media img{transform:scale(1.04)}
.news-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-title a{color:var(--ink)}
.news-title a:hover{color:var(--brand)}
.news-desc{font-size:13.5px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:10px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.news-foot .dot-sep{width:3px;height:3px;border-radius:50%;background:#C3CFDD}
.news-empty{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:#fff;
}
.news-empty i{font-size:30px;color:#BFD8F5; margin-bottom:14px;display:block}
.news-empty p{font-size:14.5px;color:var(--ink-2)}

/* ---------- safety grid ---------- */
.safety-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.safety-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:0 3px 12px rgba(23,60,110,.035);transition:border-color .25s ease,transform .25s ease;
}
.safety-card:hover{border-color:#BFD8F5;transform:translateY(-3px)}
.safety-card .s-icon{width:42px;height:42px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:inline-flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:14px}
.safety-card h3{font-size:16.5px;margin-bottom:8px}
.safety-card p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

/* ---------- cities ---------- */
.city-cloud{display:flex;flex-wrap:wrap;gap:10px}
.city{
  display:inline-block;background:#fff;border:1px solid var(--line);color:var(--ink-2);
  border-radius:999px;padding:7px 16px;font-size:13.5px;transition:all .2s ease;cursor:default;
}
.city:hover{border-color:var(--brand);color:var(--brand);background:var(--brand-soft)}

/* ---------- quick answers ---------- */
.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px 32px}
.quick-item{background:#fff;border-left:3px solid var(--brand-soft);border-radius:10px;padding:16px 18px;transition:border-color .2s ease}
.quick-item:hover{border-left-color:var(--brand)}
.quick-item h3{font-size:15px;font-weight:700;margin-bottom:6px}
.quick-item p{font-size:13.8px;color:var(--ink-2);line-height:1.75}

/* ---------- accordion ---------- */
.faq-acc{border-top:1px solid var(--line)}
.faq-acc .accordion-item{border:none;border-bottom:1px solid var(--line);background:transparent;position:relative}
.faq-acc .accordion-item::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:3px;border-radius:2px;
  background:var(--brand);opacity:0;transition:opacity .2s ease;
}
.faq-acc .accordion-item:has(.accordion-button:not(.collapsed))::before{opacity:1}
.faq-acc .accordion-button{
  background:transparent;color:var(--ink);font-size:16px;font-weight:600;
  padding:20px 44px 20px 18px;box-shadow:none;border-radius:0;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){color:var(--brand-deep);background:transparent;box-shadow:none}
.faq-acc .accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:12px;color:var(--ink-3);width:auto;height:auto;transform:none;
  position:absolute;right:16px;top:50%;margin-top:-9px;transition:transform .2s ease,color .2s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand)}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none}
.faq-acc .accordion-button:hover{color:var(--brand)}
.faq-acc .accordion-body{padding:0 44px 24px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.9}

/* ---------- form ---------- */
.form-shell{
  display:grid;grid-template-columns:0.9fr 1.1fr;gap:0;background:#fff;
  border:1px solid var(--line);border-radius:calc(var(--radius) + 4px);overflow:hidden;box-shadow:var(--shadow-hover);
}
.form-intro{background:var(--brand-soft);padding:40px 34px;display:flex;flex-direction:column;gap:16px}
.form-intro h2{font-size:26px;line-height:1.4}
.form-intro p{font-size:14.5px;color:var(--ink-2);line-height:1.85}
.form-notes{display:flex;flex-direction:column;gap:10px;margin-top:auto}
.form-notes li{display:flex;align-items:flex-start;gap:9px;font-size:13.5px;color:var(--ink-2);line-height:1.7}
.form-notes i{color:var(--brand);font-size:13px;margin-top:5px}
.form-body{padding:40px 34px}
.form-label{font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:6px}
.form-label .req{color:var(--coral);margin-left:3px}
.form-control,.form-select{
  border-radius:10px;border:1px solid var(--line);background:#F8FAFD;color:var(--ink);
  font-size:14.5px;padding:11px 14px;transition:all .2s ease;
}
.form-control::placeholder{color:#A9B5C4}
.form-control:focus,.form-select:focus{
  background:#fff;border-color:var(--brand);box-shadow:0 0 0 3px rgba(29,111,208,.13);color:var(--ink);
}
.form-check-input{border-color:#C3D2E4;border-radius:5px;width:17px;height:17px;margin-top:3px}
.form-check-input:checked{background-color:var(--brand);border-color:var(--brand)}
.form-check-input:focus{box-shadow:0 0 0 3px rgba(29,111,208,.13);border-color:var(--brand)}
.form-check-label{font-size:13.5px;color:var(--ink-2);line-height:1.7}
.form-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:20px}
.form-privacy{font-size:12.5px;color:var(--ink-3);line-height:1.7;margin-top:14px}
.form-ok{
  background:#EAF7EF;border:1px solid #BEE4CC;color:#2A7A48;border-radius:10px;
  padding:12px 16px;font-size:13.5px;margin-bottom:18px;
}

/* ---------- final cta ---------- */
.final-cta{padding:0 0 72px}
.cta-band{
  position:relative;border-radius:calc(var(--radius) + 4px);overflow:hidden;
  background:var(--brand) center/cover no-repeat;padding:56px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(21,90,174,.94) 0%,rgba(29,111,208,.82) 55%,rgba(29,111,208,.55) 100%)}
.cta-band > *{position:relative;z-index:1}
.cta-band h2{color:#fff;font-size:26px;line-height:1.45;max-width:620px}
.cta-band p{color:rgba(255,255,255,.86);font-size:14.5px;margin-top:10px;max-width:620px}
.cta-band .btn-light-brand{background:#fff;color:var(--brand-deep);border-color:#fff;font-weight:700}
.cta-band .btn-light-brand:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-1px)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:auto}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16.5px;color:var(--ink)}
.footer-desc{font-size:13.5px;color:var(--ink-2);line-height:1.85;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:var(--ink-2);padding:5px 0;line-height:1.7}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{
  border-top:1px solid var(--line);margin-top:36px;padding-top:18px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:12.5px;color:var(--ink-3);line-height:1.8;
}
.footer-bottom p{margin:0}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .hero-title{font-size:36px}
  .sec-head h2{font-size:27px}
}
@media (max-width:991.98px){
  .side-rail{display:none}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:sticky;top:0;z-index:1030;background:rgba(255,255,255,.97);
    border-bottom:1px solid var(--line);padding:12px 16px;
  }
  .hero{padding:48px 0 44px}
  .hero-title{font-size:32px;margin-top:16px}
  .sec{padding:56px 0}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .metric{border-left:1px solid var(--line)}
  .metric:nth-child(2n+1){border-left:none}
  .metric:nth-child(n+3){border-top:1px solid var(--line)}
  .bento{grid-template-columns:repeat(2,1fr)}
  .bento-lg{grid-column:span 2;grid-row:span 1}
  .bento-lg .bento-media{aspect-ratio:16/7}
  .safety-grid{grid-template-columns:repeat(2,1fr)}
  .review-grid{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline::before{display:none}
  .form-shell{grid-template-columns:1fr}
  .form-intro{padding:32px 26px}
  .form-body{padding:32px 26px}
  .cta-band{padding:44px 28px}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .hero-title{font-size:28px}
  .hero-lead{font-size:15px}
  .sec-head h2{font-size:23px}
  .sec{padding:44px 0}
  .btn-lg{padding:12px 20px;font-size:15px}
  .compare-grid{grid-template-columns:1fr;gap:16px}
  .compare-divider{height:0;min-height:0}
  .compare-divider::before{left:16px;right:16px;top:50%;bottom:auto;width:auto;height:1px}
  .compare-divider .dot{display:none}
  .topic-grid{grid-template-columns:1fr}
  .quick-grid{grid-template-columns:1fr}
  .safety-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .timeline{grid-template-columns:1fr;gap:18px}
  .timeline::before{display:block;left:8px;right:auto;top:10px;bottom:10px;width:2px;border-top:0;border-left:2px dashed #D3E2F4}
  .tl-item{padding-top:0;padding-left:34px}
  .tl-dot{left:0;top:6px}
  .metric .num{font-size:34px}
  .metric{padding:22px 18px}
  .cta-band h2{font-size:21px}
}
@media (max-width:575.98px){
  .bento{grid-template-columns:1fr}
  .bento-lg{grid-column:span 1}
  .hero-actions .btn{width:100%}
  .form-actions .btn{width:100%}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .news-body{padding:16px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: article */
:root{
  --bs-primary:#1D6FD0;
  --bs-primary-rgb:29,111,208;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#1A2433;
  --bs-body-bg:#FFFFFF;
  --bs-border-radius:10px;
  --bs-link-color:#1D6FD0;
  --bs-link-hover-color:#155AAE;
  --brand:#1D6FD0;
  --brand-deep:#155AAE;
  --brand-soft:#E8F1FC;
  --coral:#F2705A;
  --ink:#1A2433;
  --ink-2:#5B6B82;
  --ink-3:#8A97A8;
  --line:#E3EAF3;
  --bg-alt:#F5F8FC;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(23,60,110,.06);
  --shadow-hover:0 14px 32px rgba(23,60,110,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--bs-body-font-family);color:var(--ink);background:var(--bs-body-bg);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep);text-decoration:none}
button,input,select,textarea{font-family:inherit}
h1,h2,h3,h4,h5{margin:0;color:var(--ink)}
p{margin:0}
a:focus-visible,button:focus-visible,.rel-card:focus-visible,.readnav-card:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
.layout{display:flex;align-items:flex-start;min-height:100vh}
.page-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;min-height:100vh}
main{flex:1 1 auto;min-width:0}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
/* ---------- side rail ---------- */
.side-rail{
  flex:0 0 232px;width:232px;position:sticky;top:0;height:100vh;
  background:#fff;border-right:1px solid var(--line);
  padding:26px 16px 20px;display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;z-index:1040;
}
.rail-brand{display:flex;align-items:center;gap:10px}
.rail-logo{position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:11px;background:var(--brand);box-shadow:0 6px 14px rgba(29,111,208,.25)}
.rail-logo::before{content:"";position:absolute;top:9px;left:9px;width:8px;height:8px;border-radius:50%;background:#fff}
.rail-logo::after{content:"";position:absolute;right:9px;bottom:9px;width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.72)}
.rail-brand-text strong{display:block;font-size:15px;line-height:1.3;color:var(--ink)}
.rail-brand-text small{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.4px}
.rail-divider{height:1px;background:var(--line);margin:2px 0}
.rail-nav{display:flex;flex-direction:column;gap:4px}
.rail-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--ink-2);font-size:14px;font-weight:500;border-left:3px solid transparent;transition:all .2s ease}
.rail-link i{font-size:14px;width:16px;text-align:center;color:var(--ink-3);transition:color .2s ease}
.rail-link:hover{background:var(--bg-alt);color:var(--brand)}
.rail-link:hover i{color:var(--brand)}
.rail-link.is-active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);font-weight:600}
.rail-link.is-active i{color:var(--brand)}
.rail-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.rail-foot p{margin:12px 0 0;font-size:11.5px;line-height:1.7;color:var(--ink-3)}
/* ---------- mobile bar ---------- */
.mobile-bar{display:none;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:1035}
.mobile-brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:700;font-size:15px}
.mobile-brand:hover{color:var(--brand)}
.mobile-brand .rail-logo{flex:0 0 30px;width:30px;height:30px;border-radius:9px}
.mobile-brand .rail-logo::before{width:7px;height:7px;top:7px;left:7px}
.mobile-brand .rail-logo::after{width:7px;height:7px;right:7px;bottom:7px}
.mobile-toggle{width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:16px;transition:all .2s ease}
.mobile-toggle:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.offcanvas{border-right:1px solid var(--line);max-width:280px}
.offcanvas-title{font-size:16px;font-weight:700}
.offcanvas-body .rail-link{padding:12px}
/* ---------- buttons / pills ---------- */
.btn{border-radius:10px;font-weight:600;font-size:15px;padding:11px 22px;border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.5;transition:all .22s ease;box-shadow:none}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px var(--brand-soft);outline:none}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(29,111,208,.24)}
.btn-brand:active{background:var(--brand);border-color:var(--brand);transform:translateY(0);box-shadow:none}
.btn-outline-brand{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand-soft);border-color:var(--brand-deep);color:var(--brand-deep);transform:translateY(-1px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:9px}
.btn-lg{padding:13px 26px;font-size:16px;border-radius:11px}
.badge-soft{display:inline-block;background:var(--brand-soft);color:var(--brand-deep);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;line-height:1.8}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand-deep);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600}
.pill-ghost{background:#fff;border:1px solid var(--line);color:var(--ink-2);font-weight:500}
.pill-ghost:hover{border-color:var(--brand);color:var(--brand)}
.pill-row{display:flex;flex-wrap:wrap;gap:10px}
/* ---------- sections ---------- */
.sec{padding:72px 0}
.sec-alt{background:var(--bg-alt)}
.sec-head{margin-bottom:32px}
.sec-title{font-size:28px;font-weight:700;line-height:1.4;color:var(--ink)}
.sec-title::after{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--brand);margin-top:12px}
.sec-sub{color:var(--ink-2);font-size:15px;line-height:1.85;margin-top:14px;max-width:720px}
/* ---------- article head ---------- */
.article-head{background:linear-gradient(180deg,#F2F7FD 0%,#FFFFFF 100%);border-bottom:1px solid var(--line);padding:34px 0 36px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--brand)}
.crumbs .sep{color:#C3CEDD}
.article-title{font-size:clamp(26px,3.1vw,38px);line-height:1.35;font-weight:700;letter-spacing:.2px;margin:16px 0 0;max-width:900px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;margin-top:20px;font-size:13px;color:var(--ink-3)}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:#C3CEDD;display:inline-block}
.article-meta .meta-item{display:inline-flex;align-items:center;gap:6px}
.article-meta i{font-size:12px;color:var(--ink-3)}
.article-tags{margin-top:18px}
/* ---------- article body ---------- */
.article-shell{max-width:760px;margin:0 auto}
.article-body{font-size:16.5px;line-height:1.85;color:#26313F;word-wrap:break-word}
.article-body p{margin:0 0 22px}
.article-body h2{font-size:23px;font-weight:700;line-height:1.5;margin:42px 0 18px;padding-left:14px;border-left:4px solid var(--brand);color:var(--ink);scroll-margin-top:90px}
.article-body h3{font-size:19px;font-weight:600;line-height:1.55;margin:30px 0 14px;color:var(--ink)}
.article-body h4{font-size:17px;font-weight:600;margin:24px 0 12px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px}
.article-body li{margin-bottom:10px;line-height:1.85}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{margin:26px 0;padding:16px 20px;background:var(--brand-soft);border-left:3px solid var(--brand);border-radius:0 12px 12px 0;color:var(--brand-deep);font-size:15.5px}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px}
.article-body code{background:#EEF3FA;border-radius:6px;padding:2px 6px;font-size:14px;color:var(--brand-deep)}
.article-body pre{background:#0F1D30;color:#DCE7F5;padding:16px 18px;border-radius:12px;overflow:auto;margin:24px 0}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.article-body thead th{background:var(--bg-alt);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFF}
.article-body a{color:var(--brand);text-decoration:underline;text-decoration-color:rgba(29,111,208,.35);text-underline-offset:3px}
.article-body a:hover{color:var(--brand-deep);text-decoration-color:var(--brand-deep)}
.article-body hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.empty-state{text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:var(--bg-alt)}
.empty-state i{font-size:30px;color:var(--brand);margin-bottom:14px;display:block}
.empty-state h2{font-size:20px;font-weight:700;margin-bottom:10px}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:20px}
/* ---------- toc ---------- */
.toc{background:var(--bg-alt);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-bottom:36px}
.toc h2{font-size:14px;font-weight:700;letter-spacing:.5px;color:var(--brand-deep);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.toc h2 i{font-size:13px}
.toc ol{margin:0;padding-left:20px}
.toc li{margin-bottom:8px;font-size:14.5px;line-height:1.7}
.toc li::marker{color:var(--brand);font-weight:700}
.toc a{color:var(--ink-2);text-decoration:none}
.toc a:hover{color:var(--brand);text-decoration:underline}
/* ---------- author box ---------- */
.author-box{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;background:#fff;box-shadow:var(--shadow)}
.author-avatar{flex:0 0 48px;width:48px;height:48px;border-radius:50%;background:var(--brand-soft);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}
.author-box h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.author-box p{font-size:14px;color:var(--ink-2);line-height:1.85}
/* ---------- safety strip ---------- */
.safety-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.safety-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 22px;box-shadow:var(--shadow);transition:all .25s ease}
.safety-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9DEF6}
.safety-item i{font-size:18px;color:var(--brand);margin-bottom:12px;display:block}
.safety-item h3{font-size:15.5px;font-weight:600;margin-bottom:8px}
.safety-item p{font-size:14px;color:var(--ink-2);line-height:1.8}
/* ---------- related cards ---------- */
.rel-card{display:block;height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px;box-shadow:var(--shadow);transition:all .25s ease;color:inherit}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9DEF6;color:inherit}
.rel-card .rel-cat{display:inline-block;font-size:12px;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:2px 10px;font-weight:600}
.rel-card h3{font-size:16.5px;line-height:1.55;margin:12px 0 8px;color:var(--ink);font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card p{font-size:14px;color:var(--ink-2);line-height:1.75;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-time{font-size:12.5px;color:var(--ink-3);display:inline-flex;align-items:center;gap:6px}
.rel-time i{font-size:11.5px}
/* ---------- read nav ---------- */
.readnav{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.readnav-card{display:flex;gap:16px;align-items:center;justify-content:space-between;border:1px solid var(--line);border-radius:14px;padding:18px 20px;background:#fff;box-shadow:var(--shadow);transition:all .25s ease;color:inherit}
.readnav-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9DEF6;color:inherit}
.readnav-card .rn-label{display:block;font-size:12.5px;color:var(--ink-3);margin-bottom:4px}
.readnav-card .rn-title{display:block;font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5}
.readnav-card i{font-size:16px;color:var(--brand);flex:0 0 auto}
/* ---------- end cta ---------- */
.end-cta{background:var(--brand-soft);border:1px solid #CFE0F6;border-radius:var(--radius);padding:30px 32px;display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between}
.end-cta h2{font-size:20px;font-weight:700;line-height:1.5}
.end-cta p{font-size:14px;color:var(--ink-2);margin-top:8px}
/* ---------- footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:60px 0 26px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand .rail-logo{flex:0 0 34px;width:34px;height:34px;border-radius:10px}
.footer-brand .rail-logo::before{width:7px;height:7px;top:8px;left:8px}
.footer-brand .rail-logo::after{width:7px;height:7px;right:8px;bottom:8px}
.footer-brand strong{font-size:16px;color:var(--ink)}
.footer-desc{color:var(--ink-2);font-size:14px;line-height:1.85;max-width:350px}
.footer-col h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--ink)}
.footer-col a,.footer-col span{display:block;font-size:13.5px;color:var(--ink-2);margin-bottom:10px;line-height:1.7}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);margin-top:38px;padding-top:18px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}
.footer-bottom p{margin:0;font-size:12.5px;color:var(--ink-3);line-height:1.8}
/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .wrap{padding:0 22px}
  .sec{padding:64px 0}
}
@media (max-width:991.98px){
  .side-rail{display:none}
  .mobile-bar{display:flex}
  .sec{padding:56px 0}
  .sec-title{font-size:25px}
  .safety-list{grid-template-columns:1fr 1fr}
  .article-head{padding:26px 0 28px}
}
@media (max-width:767.98px){
  .wrap{padding:0 16px}
  .sec{padding:44px 0}
  .sec-title{font-size:22px}
  .sec-sub{font-size:14.5px}
  .article-body{font-size:16px;line-height:1.82}
  .article-body h2{font-size:20px;margin:34px 0 16px}
  .article-body h3{font-size:17.5px}
  .article-title{font-size:26px}
  .safety-list{grid-template-columns:1fr}
  .readnav{grid-template-columns:1fr}
  .end-cta{padding:24px 22px}
  .author-box{padding:18px}
  .footer-bottom{flex-direction:column}
}
@media (max-width:575.98px){
  .btn{width:100%}
  .end-cta .btn{width:100%}
  .article-meta{font-size:12.5px}
  .toc{padding:16px 18px}
  .footer-brand strong{font-size:15px}
}

/* roulang page: category1 */
:root{
  --bs-primary:#1D6FD0;
  --bs-primary-rgb:29,111,208;
  --bs-body-font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --bs-body-color:#1A2433;
  --bs-body-bg:#FFFFFF;
  --bs-border-radius:10px;
  --bs-link-color:#1D6FD0;
  --bs-link-hover-color:#155AAE;
  --brand:#1D6FD0;
  --brand-deep:#155AAE;
  --brand-soft:#E8F1FC;
  --coral:#F2705A;
  --ink:#1A2433;
  --ink-2:#5B6B82;
  --ink-3:#8A97A8;
  --line:#E3EAF3;
  --bg-alt:#F5F8FC;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 8px 24px rgba(23,60,110,.06);
  --shadow-hover:0 14px 32px rgba(23,60,110,.10);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:var(--bs-body-font-family);color:var(--ink);background:var(--bs-body-bg);font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:.2px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- shell ---------- */
.app-shell{display:flex;align-items:flex-start;min-height:100vh}
.page-body{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;min-height:100vh}
.wrap{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ---------- side rail ---------- */
.side-rail{
  flex:0 0 232px;width:232px;position:sticky;top:0;height:100vh;
  background:#fff;border-right:1px solid var(--line);
  padding:26px 16px 20px;display:flex;flex-direction:column;gap:16px;
  overflow-y:auto;z-index:1040;
}
.rail-brand{display:flex;align-items:center;gap:10px}
.rail-logo{position:relative;flex:0 0 36px;width:36px;height:36px;border-radius:11px;background:var(--brand);box-shadow:0 6px 14px rgba(29,111,208,.25)}
.rail-logo::before{content:"";position:absolute;top:9px;left:9px;width:8px;height:8px;border-radius:50%;background:#fff}
.rail-logo::after{content:"";position:absolute;right:9px;bottom:9px;width:8px;height:8px;border-radius:50%;background:rgba(255,255,255,.72)}
.rail-brand-text strong{display:block;font-size:15px;line-height:1.3;color:var(--ink)}
.rail-brand-text small{display:block;font-size:11px;color:var(--ink-3);letter-spacing:.4px;margin-top:2px}
.rail-nav{display:flex;flex-direction:column;gap:4px}
.rail-link{
  display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;
  color:var(--ink-2);font-size:14px;font-weight:500;border-left:3px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.rail-link i{width:18px;text-align:center;font-size:14px;color:var(--ink-3);transition:color .2s ease}
.rail-link:hover{background:var(--brand-soft);color:var(--brand-deep)}
.rail-link:hover i{color:var(--brand)}
.rail-link.is-active{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);font-weight:600}
.rail-link.is-active i{color:var(--brand)}
.rail-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.rail-divider{height:1px;background:var(--line);margin:4px 0}
.rail-foot{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.rail-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
  background:var(--brand);color:#fff;border-radius:10px;padding:10px 14px;
  font-size:13.5px;font-weight:600;transition:background .2s ease,transform .2s ease;
}
.rail-cta:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px)}
.rail-copy{font-size:11px;line-height:1.7;color:var(--ink-3)}

/* ---------- mobile bar ---------- */
.mobile-bar{display:none}
.mobile-brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-weight:700;font-size:15px}
.mobile-brand:hover{color:var(--brand)}
.mobile-brand .rail-logo{flex:0 0 30px;width:30px;height:30px;border-radius:9px}
.mobile-brand .rail-logo::before{width:7px;height:7px;top:7px;left:7px}
.mobile-brand .rail-logo::after{width:7px;height:7px;right:7px;bottom:7px}
.mobile-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--line);background:#fff;
  color:var(--ink);display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:all .2s ease;
}
.mobile-toggle:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand)}
.offcanvas{border-right:1px solid var(--line)}
.offcanvas-title{font-size:16px;font-weight:700}
.offcanvas-body .rail-link{padding:12px 12px}
.offcanvas-body .rail-nav{gap:2px}

/* ---------- buttons / tags ---------- */
.btn{
  border-radius:10px;font-weight:600;font-size:15px;padding:11px 22px;border:1px solid transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;line-height:1.5;
  transition:all .22s ease;box-shadow:none;
}
.btn:focus,.btn:focus-visible{box-shadow:0 0 0 3px var(--brand-soft);outline:none}
.btn-brand{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-brand:hover{background:var(--brand-deep);border-color:var(--brand-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 22px rgba(29,111,208,.24)}
.btn-brand:active{background:var(--brand);border-color:var(--brand);transform:translateY(0);box-shadow:none}
.btn-outline-brand{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline-brand:hover{background:var(--brand-soft);border-color:var(--brand-deep);color:var(--brand-deep);transform:translateY(-1px)}
.btn-outline-brand:active{transform:translateY(0)}
.btn-lg{padding:13px 26px;font-size:16px;border-radius:11px}
.btn-sm{padding:8px 16px;font-size:13.5px;border-radius:9px}
.pill{display:inline-flex;align-items:center;gap:6px;background:var(--brand-soft);color:var(--brand-deep);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:600;line-height:1.6}
.badge-soft{display:inline-block;background:var(--brand-soft);color:var(--brand-deep);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:600;line-height:1.8}
.badge-line{display:inline-block;border:1px solid var(--line);color:var(--ink-2);border-radius:999px;padding:2px 10px;font-size:12px;line-height:1.8;background:#fff}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-arrow i{font-size:12px;transition:transform .2s ease}
.link-arrow:hover i{transform:translateX(3px)}

/* ---------- sections ---------- */
.sec{padding:72px 0}
.sec-alt{background:var(--bg-alt)}
.sec-head{margin-bottom:28px}
.sec-head h2{font-size:29px;line-height:1.35}
.sec-head h2::after{content:"";display:block;width:40px;height:3px;border-radius:2px;background:var(--brand);margin-top:14px}
.sec-head .sec-desc{margin-top:14px;color:var(--ink-2);font-size:15px;max-width:720px}

/* ---------- category hero ---------- */
.cat-hero{background:linear-gradient(180deg,#F2F7FD 0%,#FFFFFF 100%);padding:34px 0 44px;border-bottom:1px solid var(--line)}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:var(--ink-3)}
.cat-title{font-size:40px;line-height:1.3;margin-top:16px;letter-spacing:.4px}
.cat-lead{margin-top:18px;color:var(--ink-2);font-size:16px;line-height:1.9;max-width:700px}
.cat-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.stat-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:8px 22px;margin-top:26px}
.stat-cell{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:16px 0}
.stat-cell+.stat-cell{border-top:1px solid var(--line)}
.stat-num{font-size:26px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num small{font-size:13px;font-weight:600;color:var(--ink-3);margin-left:4px}
.stat-label{font-size:13px;color:var(--ink-2);text-align:right}

/* ---------- quick tips ---------- */
.tip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.tip-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow);transition:all .25s ease}
.tip-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE1F7}
.tip-item .tip-key{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;color:var(--brand-deep);background:var(--brand-soft);border-radius:999px;padding:3px 12px}
.tip-item p{margin-top:12px;font-size:14px;color:var(--ink-2);line-height:1.8}

/* ---------- toolbar ---------- */
.toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:26px}
.tool-tags{display:flex;flex-wrap:wrap;gap:8px}
.tool-tag{display:inline-flex;align-items:center;border:1px solid var(--line);background:#fff;color:var(--ink-2);border-radius:999px;padding:6px 14px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s ease}
.tool-tag:hover{border-color:var(--brand);color:var(--brand)}
.tool-tag.is-on{background:var(--brand);border-color:var(--brand);color:#fff}
.tool-sort{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-3)}
.tool-sort select{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:9px;padding:7px 12px;font-size:13px;cursor:pointer}
.tool-sort select:focus{border-color:var(--brand);outline:none;box-shadow:0 0 0 3px var(--brand-soft)}

/* ---------- post cards ---------- */
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;height:100%;display:flex;flex-direction:column}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE1F7}
.post-thumb{display:block;aspect-ratio:16/9;background:#EDF3FB;overflow:hidden}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.post-card:hover .post-thumb img{transform:scale(1.04)}
.post-body{padding:18px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--ink-3);flex-wrap:wrap}
.post-title{font-size:17px;line-height:1.5;font-weight:600}
.post-title a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-card:hover .post-title a{color:var(--brand)}
.post-excerpt{font-size:14px;color:var(--ink-2);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-foot{margin-top:auto;padding-top:6px}
.more-row{display:flex;justify-content:center;margin-top:36px}
.empty-state{text-align:center;padding:54px 24px;border:1px dashed var(--line);border-radius:var(--radius);background:#fff;color:var(--ink-3)}
.empty-state i{font-size:26px;color:var(--brand);display:block;margin-bottom:12px}
.empty-state p{font-size:14px}

/* ---------- deep reads ---------- */
.deep-list{display:flex;flex-direction:column;gap:14px}
.deep-item{display:flex;align-items:center;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 20px;box-shadow:var(--shadow);transition:all .25s ease}
.deep-item:hover{transform:translateX(3px);border-color:#CFE1F7;box-shadow:var(--shadow-hover)}
.deep-num{flex:0 0 30px;font-size:15px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}
.deep-thumb{flex:0 0 96px;width:96px;aspect-ratio:4/3;border-radius:10px;overflow:hidden;background:#EDF3FB}
.deep-thumb img{width:100%;height:100%;object-fit:cover}
.deep-text{min-width:0}
.deep-text h3{font-size:16px;line-height:1.5;font-weight:600}
.deep-text h3 a{color:var(--ink)}
.deep-item:hover .deep-text h3 a{color:var(--brand)}
.deep-text p{margin-top:6px;font-size:13.5px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.deep-meta{margin-top:8px;font-size:12px;color:var(--ink-3)}

/* ---------- safety ---------- */
.safety-figure{margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-hover);background:#EDF3FB;aspect-ratio:4/3}
.safety-figure img{width:100%;height:100%;object-fit:cover}
.safety-list{display:flex;flex-direction:column;gap:14px}
.safety-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:16px 18px;box-shadow:var(--shadow);transition:all .25s ease}
.safety-item:hover{border-color:#CFE1F7;box-shadow:var(--shadow-hover)}
.safety-index{flex:0 0 28px;width:28px;height:28px;border-radius:9px;background:var(--brand-soft);color:var(--brand);font-size:13px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:2px}
.safety-item h3{font-size:15.5px;font-weight:600;line-height:1.5}
.safety-item p{margin-top:6px;font-size:13.5px;color:var(--ink-2);line-height:1.8}

/* ---------- accordion ---------- */
.accordion-item{border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.accordion-button{position:relative;font-size:16px;font-weight:600;color:var(--ink);background:#fff;padding:18px 52px 18px 20px;box-shadow:none;line-height:1.6}
.accordion-button:not(.collapsed){color:var(--brand-deep);background:var(--brand-soft)}
.accordion-button:not(.collapsed)::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.accordion-button::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:12px;color:var(--brand);background-image:none;width:auto;height:auto;position:absolute;right:20px;top:50%;transform:translateY(-50%);transition:transform .2s ease}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(180deg)}
.accordion-button:focus{box-shadow:0 0 0 3px var(--brand-soft);border-color:transparent;z-index:2}
.accordion-body{padding:18px 20px 22px;font-size:14.5px;color:var(--ink-2);line-height:1.85;background:#fff}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.rel-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow);transition:all .25s ease}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#CFE1F7}
.rel-card h3{font-size:15.5px;line-height:1.55;font-weight:600}
.rel-card h3 a{color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-card:hover h3 a{color:var(--brand)}
.rel-card time{display:block;margin-top:10px;font-size:12.5px;color:var(--ink-3)}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:44px 0}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.cta-inner h2{font-size:23px;line-height:1.45}
.cta-inner p{margin-top:8px;font-size:14px;color:var(--ink-2)}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-alt);border-top:1px solid var(--line);padding:56px 0 24px;margin-top:auto}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand strong{font-size:16px;color:var(--ink)}
.footer-brand .rail-logo{flex:0 0 32px;width:32px;height:32px;border-radius:10px}
.footer-brand .rail-logo::before{width:7px;height:7px;top:8px;left:8px}
.footer-brand .rail-logo::after{width:7px;height:7px;right:8px;bottom:8px}
.footer-desc{font-size:13.5px;color:var(--ink-2);line-height:1.85;max-width:360px}
.footer-col{display:flex;flex-direction:column;gap:8px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:4px}
.footer-col a,.footer-col span{font-size:13.5px;color:var(--ink-2);line-height:1.75}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{border-top:1px solid var(--line);margin-top:36px;padding-top:18px;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}
.footer-bottom p{font-size:12.5px;color:var(--ink-3);line-height:1.8}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .cat-title{font-size:36px}
  .tip-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:991.98px){
  .side-rail{display:none}
  .mobile-bar{
    display:flex;align-items:center;justify-content:space-between;gap:12px;
    position:sticky;top:0;z-index:1035;background:#fff;border-bottom:1px solid var(--line);
    padding:10px 16px;
  }
  .wrap{padding:0 20px}
  .sec{padding:56px 0}
  .cat-hero{padding:26px 0 36px}
  .cat-title{font-size:30px}
  .rel-grid{grid-template-columns:1fr 1fr}
  .deep-thumb{flex:0 0 80px;width:80px}
}
@media (max-width:767.98px){
  body{font-size:15.5px}
  .sec{padding:46px 0}
  .sec-head h2{font-size:23px}
  .cat-title{font-size:27px}
  .cat-lead{font-size:15px}
  .tip-grid{grid-template-columns:1fr}
  .rel-grid{grid-template-columns:1fr}
  .toolbar{padding:14px}
  .cta-inner h2{font-size:20px}
  .deep-item{align-items:flex-start}
  .deep-text p{-webkit-line-clamp:2}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (max-width:575.98px){
  .wrap{padding:0 16px}
  .btn{width:100%}
  .cta-inner .btn{width:100%}
  .deep-thumb{display:none}
  .stat-panel{padding:6px 16px}
  .stat-num{font-size:23px}
  .safety-figure{aspect-ratio:16/10}
  .cat-pills .pill{font-size:12px}
}