/* roulang page: index */
:root{
  --ink:#0B2239;
  --brand:#14456E;
  --brand-dark:#0E3557;
  --brand-2:#E8F1FA;
  --teal:#0E7C86;
  --amber:#C97A16;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FC;
  --line:#E3EBF4;
  --muted:#5B7288;
  --muted-2:#94A7B8;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(11,34,57,.06),0 12px 28px -14px rgba(11,34,57,.16);
  --shadow-2:0 2px 4px rgba(11,34,57,.08),0 22px 40px -18px rgba(11,34,57,.24);
  --shadow-3:0 24px 60px -28px rgba(11,34,57,.32);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
.num{font-variant-numeric:tabular-nums}
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:16px}
@media(min-width:768px){.container{padding-inline:24px}}
@media(min-width:1024px){.container{padding-inline:32px}}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .22s,color .22s,border-color .22s,transform .22s,box-shadow .22s;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(20,69,110,.85)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn[disabled]{opacity:.45;pointer-events:none}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.link-more span{transition:transform .22s}
.link-more:hover span{transform:translateX(4px)}
.link-more:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}

/* ============ badges ============ */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;letter-spacing:.04em;padding:4px 10px;border-radius:999px;line-height:1.6}
.badge-cat{background:var(--brand-2);color:var(--brand)}
.badge-price{background:#FDF4E8;border:1px solid rgba(201,122,22,.45);color:var(--amber)}
.badge-verify{background:rgba(14,124,134,.07);border:1px solid rgba(14,124,134,.35);color:var(--teal)}
.live-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--teal);border:1px solid rgba(14,124,134,.35);background:rgba(14,124,134,.06);padding:4px 10px;border-radius:999px}
.live-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);animation:pulseDot 2s ease-in-out infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}
@media(prefers-reduced-motion:reduce){.live-badge .dot{animation:none}}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;padding:10px 0 0;transition:background .25s,box-shadow .25s,padding .25s}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--line),0 14px 30px -26px rgba(11,34,57,.65);padding-bottom:10px}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:10px 16px;box-shadow:var(--shadow-1);
}
.brand{display:flex;flex-direction:column;flex:0 0 auto;line-height:1.2}
.brand-top{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.06em}
.brand-sub{font-size:12px;font-weight:600;color:var(--brand);margin-top:2px}
.brand-note{font-size:11px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
.nav-cards{display:none;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
@media(min-width:1080px){.nav-cards{display:flex}}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 11px;border-radius:12px;font-size:13px;color:#32506E;
  transition:background .2s,color .2s,transform .2s;
}
.nav-item svg{width:16px;height:16px;flex:0 0 auto;opacity:.85}
.nav-item:hover{background:var(--bg-soft);color:var(--brand);transform:translateY(-1px)}
.nav-item.is-active{background:var(--brand-2);color:var(--brand);font-weight:600}
.nav-item.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:none;align-items:center;gap:10px;margin-left:auto}
@media(min-width:1080px){.nav-actions{display:flex;margin-left:0}}
.nav-toggle{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
@media(min-width:1080px){.nav-toggle{display:none}}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none;margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow-1)}
.nav-drawer.is-open{display:block}
.drawer-item{display:flex;align-items:center;gap:10px;padding:13px 14px;border-radius:12px;border:1px solid var(--line);font-size:14px;color:#32506E;margin-bottom:8px;background:#fff}
.drawer-item:hover{background:var(--bg-soft);border-color:var(--brand);color:var(--brand)}
.drawer-item.is-active{background:var(--brand-2);border-color:var(--brand-2);color:var(--brand);font-weight:600}
.drawer-cta{margin-top:6px}

/* ============ section base ============ */
.section{padding:56px 0;position:relative}
.section--soft{background:var(--bg-soft)}
.section--line{border-top:1px solid var(--line)}
@media(min-width:768px){.section{padding:76px 0}}
@media(min-width:1024px){.section{padding:92px 0}}
.section-head{max-width:760px;margin-bottom:32px}
.section-eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;color:var(--brand);background:var(--brand-2);padding:4px 10px;border-radius:999px;margin-bottom:12px}
.section-title{font-size:clamp(22px,3vw,32px);line-height:1.35;font-weight:700;color:var(--ink)}
.section-desc{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.85}

/* ============ hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-image:url('/assets/images/05fd9b13e392c82d.jpg');
  background-size:cover;background-position:center;
  padding:44px 0 56px;
}
.hero::before{content:"";position:absolute;inset:0;background:rgba(245,248,252,.94)}
.hero::after{
  content:"";position:absolute;top:-70px;right:-70px;width:240px;height:240px;border-radius:50%;
  border:1px solid rgba(20,69,110,.14);
  box-shadow:inset 0 0 0 40px rgba(20,69,110,.035),inset 0 0 0 80px rgba(20,69,110,.025);
  pointer-events:none;
}
.hero > .container{position:relative;z-index:1}
.hero-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:1024px){.hero-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:center}}
.hero h1{font-size:clamp(28px,4.2vw,50px);line-height:1.22;font-weight:700;letter-spacing:.01em}
.hero-lead{margin-top:16px;font-size:16px;font-weight:600;color:var(--brand)}
.hero-text{margin-top:14px;font-size:15px;color:#3D5A75;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-fact{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#32506E;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 12px}
.hero-fact b{color:var(--brand);font-weight:700;font-variant-numeric:tabular-nums}

.hero-card{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow-3);padding:20px}
.hero-card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.hero-rows{display:grid;gap:0;margin-bottom:16px}
.hero-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14px;color:var(--muted)}
.hero-row:last-child{border-bottom:0}
.hero-row strong{color:var(--ink);font-size:16px;font-variant-numeric:tabular-nums}
.qr-frame{
  position:relative;aspect-ratio:1/1;border-radius:var(--radius-img);border:1px solid var(--line);
  background:
    repeating-linear-gradient(90deg,#EDF3FA 0 8px,transparent 8px 18px),
    repeating-linear-gradient(0deg,#EDF3FA 0 8px,transparent 8px 18px),
    #fff;
  display:flex;align-items:center;justify-content:center;overflow:hidden;
}
.qr-frame .qr-mark{width:44%;height:44%;border-radius:12px;background:var(--brand-2);border:1px solid rgba(20,69,110,.2);display:flex;align-items:center;justify-content:center;color:var(--brand)}
.qr-frame .qr-mark svg{width:52%;height:52%}
.qr-corner{position:absolute;width:20px;height:20px;border:2px solid var(--teal);border-radius:4px}
.qr-corner--tl{top:10px;left:10px;border-right:0;border-bottom:0}
.qr-corner--tr{top:10px;right:10px;border-left:0;border-bottom:0}
.qr-corner--bl{bottom:10px;left:10px;border-right:0;border-top:0}
.qr-corner--br{bottom:10px;right:10px;border-left:0;border-top:0}
.hero-card-foot{margin-top:14px;display:grid;gap:8px;font-size:12px;color:var(--muted)}
.hero-card-foot span{display:flex;align-items:center;gap:6px}
.hero-card-foot i{width:5px;height:5px;border-radius:50%;background:var(--teal);display:inline-block}

/* ============ metrics ============ */
.metrics{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(190px,1fr);gap:14px;overflow-x:auto;padding-bottom:10px;scrollbar-width:none}
.metrics::-webkit-scrollbar{display:none}
@media(min-width:1024px){.metrics{grid-auto-flow:row;grid-template-columns:repeat(5,1fr);overflow:visible;padding-bottom:0}}
.metric-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:18px;box-shadow:var(--shadow-1)}
.metric-label{font-size:12px;letter-spacing:.04em;color:var(--muted)}
.metric-value{margin-top:8px;font-size:clamp(28px,3.4vw,40px);font-weight:700;line-height:1.1;color:var(--brand);font-variant-numeric:tabular-nums}
.metric-value small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.metric-bar{margin-top:14px;height:4px;border-radius:999px;background:var(--line);overflow:hidden}
.metric-bar i{display:block;height:100%;background:var(--teal);border-radius:999px}
.scroll-hint{margin-top:6px;font-size:12px;color:var(--muted-2)}
@media(min-width:1024px){.scroll-hint{display:none}}

/* ============ card generic ============ */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:box-shadow .3s,transform .3s,border-color .3s}
.card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.card-pad{padding:20px}
.img-box{position:relative;overflow:hidden;border-radius:var(--radius-img);background:var(--bg-soft)}
.img-box img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .img-box img{transform:scale(1.03)}

/* ============ services matrix ============ */
.svc-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.svc-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.svc-grid{grid-template-columns:repeat(4,1fr)}}
.svc-card{display:flex;flex-direction:column;gap:8px;padding:18px}
.svc-icon{width:40px;height:40px;border-radius:12px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:2px}
.svc-icon svg{width:20px;height:20px}
.svc-name{font-size:16px;font-weight:600;color:var(--ink)}
.svc-desc{font-size:13.5px;color:var(--muted);line-height:1.75;flex:1}

/* ============ price compare ============ */
.price-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:900px){.price-grid{grid-template-columns:repeat(3,1fr);align-items:center}}
.price-card{padding:22px;position:relative}
.price-card--feature{border-color:rgba(201,122,22,.45);box-shadow:var(--shadow-3)}
@media(min-width:900px){.price-card--feature{transform:scale(1.04)}}
.price-tag{position:absolute;top:-12px;left:20px}
.price-amount{font-size:34px;font-weight:700;color:var(--brand);font-variant-numeric:tabular-nums;line-height:1.1}
.price-amount small{font-size:14px;font-weight:600;color:var(--muted);margin-left:4px}
.price-unit{margin-top:6px;font-size:13px;color:var(--muted)}
.price-list{margin-top:16px;display:grid;gap:9px;font-size:13.5px;color:#3D5A75}
.price-list li{display:flex;gap:8px;align-items:flex-start;line-height:1.7}
.price-list li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand);margin-top:9px;flex:0 0 auto}

/* ============ compare ============ */
.compare{display:grid;grid-template-columns:1fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
@media(min-width:900px){.compare{grid-template-columns:1fr 1px 1fr}}
.compare-col{padding:24px}
.compare-divider{background:var(--line);height:1px;width:100%}
@media(min-width:900px){.compare-divider{height:auto;width:1px}}
.compare-title{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:600;margin-bottom:14px}
.compare-title .dotmark{width:10px;height:10px;border-radius:3px;display:inline-block}
.compare-col--old .dotmark{background:#B9C7D6}
.compare-col--new .dotmark{background:var(--brand)}
.compare-list{display:grid;gap:12px}
.compare-list li{display:flex;gap:10px;font-size:14px;color:#3D5A75;line-height:1.7}
.mark{width:20px;height:20px;border-radius:50%;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;margin-top:3px}
.mark-no{background:#F0F4F8;color:#8FA3B6}
.mark-yes{background:rgba(14,124,134,.1);color:var(--teal)}

/* ============ timeline ============ */
.timeline{position:relative;display:grid;gap:22px;grid-template-columns:1fr;padding-left:22px}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:1px;background:var(--line)}
@media(min-width:900px){
  .timeline{grid-template-columns:repeat(4,1fr);gap:20px;padding-left:0;padding-top:26px}
  .timeline::before{left:0;right:0;top:6px;bottom:auto;width:auto;height:1px}
}
.tl-node{position:relative}
.tl-dot{position:absolute;left:-22px;top:6px;width:12px;height:12px;border-radius:50%;background:#fff;border:2px solid var(--brand)}
@media(min-width:900px){.tl-dot{left:0;top:-26px}}
.tl-phase{font-size:12px;letter-spacing:.06em;color:var(--brand);font-weight:600}
.tl-title{margin-top:4px;font-size:16px;font-weight:600}
.tl-desc{margin-top:6px;font-size:13.5px;color:var(--muted);line-height:1.75}

/* ============ coverage ============ */
.coverage-grid{display:grid;gap:24px;grid-template-columns:1fr}
@media(min-width:900px){.coverage-grid{grid-template-columns:1.05fr 1fr;align-items:center}}
.coverage-media{position:relative;border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-1);aspect-ratio:16/11;background:var(--bg-soft)}
.coverage-media img{width:100%;height:100%;object-fit:cover}
.coverage-media .cap{position:absolute;left:14px;bottom:14px;background:rgba(255,255,255,.94);border:1px solid var(--line);border-radius:999px;padding:6px 14px;font-size:12px;color:var(--brand);font-weight:600}
.tag-cloud{display:flex;flex-wrap:wrap;gap:9px}
.tag{font-size:13px;color:#32506E;background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px}
.city-search{display:flex;gap:10px;margin-top:20px;flex-wrap:wrap}
.city-search input{flex:1 1 200px;height:48px;border-radius:12px;border:1px solid var(--line);background:#fff;padding:0 14px;font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.city-search input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,69,110,.12)}
::placeholder{color:var(--muted-2)}

/* ============ news ============ */
.news-grid{display:grid;gap:20px;grid-template-columns:1fr}
@media(min-width:768px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{display:flex;flex-direction:column;overflow:hidden}
.news-thumb{display:block;aspect-ratio:16/10;overflow:hidden;border-radius:var(--radius-img);background:var(--bg-soft);margin:12px 12px 0}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .news-thumb img{transform:scale(1.03)}
.news-body{padding:16px;display:flex;flex-direction:column;gap:10px;flex:1}
.news-title{font-size:16.5px;font-weight:600;line-height:1.55;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card:hover .news-title{color:var(--brand)}
.news-summary{font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12px;color:var(--muted-2);border-top:1px solid var(--line);padding-top:10px}
.news-meta .right{display:inline-flex;align-items:center;gap:4px;color:var(--brand);font-weight:600}
.news-foot{margin-top:28px;display:flex;justify-content:center}
.empty-state{border:1px dashed var(--line);background:#fff;border-radius:var(--radius-card);padding:48px 24px;text-align:center;grid-column:1/-1}
.empty-state .ico{width:56px;height:56px;border-radius:16px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.empty-state h3{font-size:17px;font-weight:600}
.empty-state p{margin-top:8px;font-size:14px;color:var(--muted)}

/* ============ channel entries ============ */
.channel-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.channel-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.channel-grid{grid-template-columns:repeat(4,1fr)}}
.channel-card{display:flex;flex-direction:column;gap:10px;padding:22px;height:100%}
.channel-icon{width:44px;height:44px;border-radius:14px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center}
.channel-icon svg{width:22px;height:22px}
.channel-name{font-size:16px;font-weight:600}
.channel-desc{font-size:13px;color:var(--muted);line-height:1.75;flex:1}

/* ============ guard 2+4 ============ */
.guard-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.guard-grid{grid-template-columns:repeat(2,1fr)}.guard-wide{grid-column:span 2}}
@media(min-width:900px){.guard-grid{grid-template-columns:repeat(4,1fr)}.guard-wide{grid-column:span 2}}
.guard-card{display:flex;gap:12px;padding:18px}
.guard-icon{width:36px;height:36px;border-radius:10px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;flex:0 0 auto}
.guard-icon svg{width:18px;height:18px}
.guard-title{font-size:15px;font-weight:600}
.guard-desc{margin-top:4px;font-size:13px;color:var(--muted);line-height:1.7}

/* ============ qr explain ============ */
.qr-grid{display:grid;gap:28px;grid-template-columns:1fr}
@media(min-width:900px){.qr-grid{grid-template-columns:1.1fr 1fr;align-items:center}}
.step-list{display:grid;gap:14px;margin-top:20px}
.step{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow-1)}
.step-num{width:32px;height:32px;border-radius:10px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;flex:0 0 auto;font-variant-numeric:tabular-nums}
.step-title{font-size:15px;font-weight:600}
.step-desc{font-size:13px;color:var(--muted);line-height:1.7;margin-top:2px}
.qr-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;box-shadow:var(--shadow-3)}

/* ============ feedback ============ */
.fb-grid{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:900px){.fb-grid{grid-template-columns:1.3fr 1fr;grid-template-rows:auto auto}}
.fb-card{padding:22px;display:flex;flex-direction:column;gap:12px}
.fb-main{grid-row:span 2}
.fb-head{display:flex;align-items:center;gap:12px}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex:0 0 auto}
.fb-name{font-size:14.5px;font-weight:600}
.fb-city{font-size:12px;color:var(--muted-2)}
.stars{color:var(--amber);font-size:13px;letter-spacing:2px}
.fb-text{font-size:14px;color:#3D5A75;line-height:1.85}

/* ============ data bar ============ */
.data-bar{background:var(--brand-2);border-radius:var(--radius-card);padding:26px 22px;display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:768px){.data-bar{grid-template-columns:repeat(4,1fr);gap:12px}}
.data-item{display:flex;flex-direction:column;gap:2px}
.data-num{font-size:28px;font-weight:700;color:var(--brand);line-height:1.15;font-variant-numeric:tabular-nums}
.data-num small{font-size:13px;font-weight:600;margin-left:3px;color:var(--muted)}
.data-txt{font-size:12.5px;color:var(--muted)}

/* ============ quick answers ============ */
.qa-grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:900px){.qa-grid{grid-template-columns:repeat(3,1fr)}}
.qa-card{padding:20px;display:flex;flex-direction:column;gap:10px}
.qa-q{font-size:15.5px;font-weight:600;line-height:1.6}
.qa-a{font-size:13.5px;color:var(--muted);line-height:1.8;flex:1}
.qa-foot{margin-top:24px;display:flex;justify-content:center}

/* ============ faq ============ */
.faq-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:6px 22px;box-shadow:var(--shadow-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:18px 0;background:none;border:0;text-align:left;cursor:pointer;font-size:15.5px;font-weight:600;color:var(--ink);transition:color .2s}
.faq-q:hover{color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:6px}
.faq-icon{width:24px;height:24px;flex:0 0 auto;border-radius:8px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;transition:transform .2s}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{padding:0 0 18px;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ============ form ============ */
.contact-grid{display:grid;gap:26px;grid-template-columns:1fr}
@media(min-width:900px){.contact-grid{grid-template-columns:1.15fr 1fr;align-items:start}}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-3)}
.field{margin-bottom:14px}
.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;border-radius:12px;border:1px solid var(--line);background:#fff;font-size:15px;color:var(--ink);transition:border-color .2s,box-shadow .2s}
.field input,.field select{height:48px;padding:0 14px}
.field textarea{min-height:96px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(20,69,110,.12)}
.field-row{display:grid;gap:14px;grid-template-columns:1fr}
@media(min-width:640px){.field-row{grid-template-columns:1fr 1fr}}
.form-note{font-size:12px;color:var(--muted-2);line-height:1.7;margin-top:10px}
.form-msg{margin-top:12px;font-size:13px;color:var(--teal);display:none}
.form-msg.is-show{display:block}
.side-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1)}
.side-points{display:grid;gap:12px;margin-top:16px}
.side-points li{display:flex;gap:10px;font-size:13.5px;color:#3D5A75;line-height:1.75}
.side-points li .k{width:6px;height:6px;border-radius:50%;background:var(--teal);margin-top:9px;flex:0 0 auto}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#C9D8E6;padding:52px 0 0;margin-top:0}
.footer-grid{display:grid;gap:30px;grid-template-columns:1fr;padding-bottom:34px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.1fr}}
.footer-brand .ft-top{font-size:18px;font-weight:700;color:#fff}
.footer-brand .ft-sub{font-size:13px;color:#9FB6CB;margin-top:4px;line-height:1.7}
.footer-brand .ft-desc{font-size:13px;color:#8FA8BF;margin-top:12px;line-height:1.8;max-width:320px}
.ft-qr{margin-top:14px;width:78px;height:78px;border-radius:12px;border:1px solid rgba(255,255,255,.22);background:
  repeating-linear-gradient(90deg,rgba(255,255,255,.10) 0 6px,transparent 6px 13px),
  repeating-linear-gradient(0deg,rgba(255,255,255,.10) 0 6px,transparent 6px 13px);
  display:flex;align-items:center;justify-content:center;color:#9FB6CB}
.ft-qr svg{width:26px;height:26px}
.ft-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:12px;letter-spacing:.04em}
.ft-links{display:grid;gap:9px}
.ft-links a,.ft-links span{font-size:13px;color:#A8BFD2;transition:color .2s}
.ft-links a:hover{color:#fff}
.ft-tags{display:flex;flex-wrap:wrap;gap:8px}
.ft-tags span{font-size:12px;color:#A8BFD2;border:1px solid rgba(255,255,255,.16);border-radius:999px;padding:4px 10px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0 22px;display:flex;flex-wrap:wrap;gap:10px;align-items:center;justify-content:space-between;font-size:12px;color:#8FA8BF}
.footer-bottom a{color:#A8BFD2}
.footer-bottom a:hover{color:#fff}
@media(max-width:639px){
  .section{padding:42px 0}
  .hero{padding:34px 0 44px}
  .news-thumb{margin:10px 10px 0}
}

/* roulang page: article */
:root{
  --ink:#0B2239;
  --brand:#14456E;
  --brand-dark:#0E3557;
  --brand-2:#E8F1FA;
  --teal:#0E7C86;
  --amber:#C97A16;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FC;
  --line:#E3EBF4;
  --muted:#5B7288;
  --muted-2:#94A7B8;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(11,34,57,.06),0 12px 28px -14px rgba(11,34,57,.16);
  --shadow-2:0 2px 4px rgba(11,34,57,.08),0 22px 40px -18px rgba(11,34,57,.24);
  --shadow-3:0 24px 60px -28px rgba(11,34,57,.32);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:16px}
@media(min-width:768px){.container{padding-inline:24px}}
@media(min-width:1024px){.container{padding-inline:32px}}

/* ============ buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;
  cursor:pointer;transition:background .22s,color .22s,border-color .22s,transform .22s,box-shadow .22s;
}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(20,69,110,.85)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-block{width:100%}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}

/* ============ badges ============ */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;letter-spacing:.04em;padding:4px 10px;border-radius:999px;line-height:1.6;white-space:nowrap}
.badge-cat{background:var(--brand-2);color:var(--brand)}
.badge-price{background:#FDF4E8;border:1px solid rgba(201,122,22,.45);color:var(--amber)}
.badge-verify{background:rgba(14,124,134,.07);border:1px solid rgba(14,124,134,.35);color:var(--teal)}
.live-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--teal);border:1px solid rgba(14,124,134,.35);background:rgba(14,124,134,.06);padding:4px 10px;border-radius:999px;white-space:nowrap}
.live-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);animation:pulseDot 2s ease-in-out infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}
@media(prefers-reduced-motion:reduce){.live-badge .dot{animation:none}}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;padding:10px 0 0;transition:background .25s,box-shadow .25s}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--line),0 14px 30px -26px rgba(11,34,57,.65);padding-bottom:10px}
.nav-panel{
  display:flex;align-items:center;gap:16px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:10px 16px;box-shadow:var(--shadow-1);
}
.brand{display:flex;flex-direction:column;flex:0 0 auto;line-height:1.2}
.brand-top{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.06em}
.brand-sub{font-size:12px;font-weight:600;color:var(--brand);margin-top:2px}
.brand-note{font-size:11px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
.nav-cards{display:none;align-items:center;gap:4px;flex-wrap:wrap}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 11px;border-radius:12px;font-size:13px;color:#32506E;
  transition:background .2s,color .2s,transform .2s;
}
.nav-item svg{width:16px;height:16px;flex:0 0 auto;opacity:.85}
.nav-item:hover{background:var(--bg-soft);color:var(--brand);transform:translateY(-1px)}
.nav-item.is-active{background:var(--brand-2);color:var(--brand);font-weight:600}
.nav-item.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:none;align-items:center;gap:10px}
.nav-toggle{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;
}
.nav-toggle:hover{border-color:var(--brand);color:var(--brand)}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none;margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow-1)}
.nav-drawer.is-open{display:block}
.drawer-item{display:flex;align-items:center;gap:10px;padding:13px 14px;border-radius:12px;border:1px solid var(--line);font-size:14px;color:#32506E;margin-bottom:8px;background:#fff}
.drawer-item:hover{background:var(--bg-soft);border-color:var(--brand);color:var(--brand)}
.drawer-item.is-active{background:var(--brand-2);border-color:var(--brand-2);color:var(--brand);font-weight:600}
@media(min-width:1100px){
  .nav-cards{display:flex;margin-left:auto}
  .nav-actions{display:flex}
  .nav-toggle{display:none}
  .nav-drawer{display:none!important}
}

/* ============ section base ============ */
.section{padding:44px 0;position:relative}
@media(min-width:768px){.section{padding:64px 0}}
@media(min-width:1024px){.section{padding:80px 0}}
.section--soft{background:var(--bg-soft)}
.section--line{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:28px}
.eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;color:var(--brand);background:var(--brand-2);padding:4px 10px;border-radius:999px;margin-bottom:12px}
.section-title{font-size:clamp(21px,2.8vw,30px);line-height:1.38;font-weight:700;color:var(--ink)}
.section-desc{margin-top:10px;font-size:15px;color:var(--muted);line-height:1.85}

/* ============ article head ============ */
.article-head{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:32px 0 34px}
@media(min-width:768px){.article-head{padding:44px 0 46px}}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:16px}
.crumbs a{color:var(--brand);text-decoration:underline;text-decoration-style:dashed;text-underline-offset:3px}
.crumbs a:hover{text-decoration-style:solid}
.crumbs .sep{color:var(--muted-2)}
.crumbs .cur{color:var(--muted);max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  font-size:clamp(26px,3.6vw,42px);line-height:1.24;font-weight:700;color:var(--ink);
  letter-spacing:.01em;max-width:920px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-top:18px;font-size:13px;color:var(--muted)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--muted-2)}

/* ============ abstract ============ */
.abs-card{
  background:var(--brand-2);border-radius:var(--radius-img);
  border-left:4px solid var(--brand);padding:18px 20px;
  font-size:15px;line-height:1.9;color:#22405C;
}
.abs-title{font-size:12px;letter-spacing:.1em;color:var(--brand);font-weight:700;margin-bottom:8px;display:block}
.feat-figure{margin-top:22px}
.feat-figure .img-ph{
  border-radius:var(--radius-img);overflow:hidden;border:1px solid var(--line);
  aspect-ratio:16/9;background:var(--bg-soft);
}
.feat-figure img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.feat-figure:hover img{transform:scale(1.03)}
.feat-figure figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}

/* ============ article layout ============ */
.article-layout{display:grid;grid-template-columns:1fr;gap:32px}
@media(min-width:1024px){.article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:40px}}
.prose{max-width:760px;font-size:16px;line-height:1.9;color:#1B3A57}
.prose h2{position:relative;font-size:clamp(20px,2.4vw,26px);line-height:1.45;font-weight:700;color:var(--ink);margin:34px 0 14px;padding-left:15px}
.prose h2:first-child{margin-top:0}
.prose h2::before{content:"";position:absolute;left:0;top:.32em;width:6px;height:19px;border-radius:3px;background:var(--brand)}
.prose h3{font-size:19px;font-weight:600;margin:24px 0 10px;color:var(--ink)}
.prose p{margin:0 0 1.15em}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.4em}
.prose ul{list-style:disc}
.prose ol{list-style:decimal}
.prose li{margin:.32em 0}
.prose ul li::marker{color:var(--brand)}
.prose ol li::marker{color:var(--brand);font-weight:600}
.prose blockquote{margin:24px 0;padding:14px 20px;background:var(--bg-soft);border-left:3px solid var(--brand);border-radius:0 var(--radius-img) var(--radius-img) 0;color:#33506B}
.prose img{border-radius:var(--radius-img);margin:22px 0}
.prose figure{margin:22px 0}
.prose figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.prose a{color:var(--brand);text-decoration:underline;text-decoration-style:dashed;text-underline-offset:3px}
.prose a:hover{text-decoration-style:solid}
.prose strong{color:var(--ink)}
.not-found{
  border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg-soft);
  padding:28px 22px;text-align:center;
}
.not-found .nf-title{font-size:18px;font-weight:700;color:var(--ink)}
.not-found .nf-desc{margin-top:8px;font-size:14px;color:var(--muted)}
.not-found .btn{margin-top:16px}

/* ============ side card ============ */
.side-col{display:flex;flex-direction:column;gap:18px}
@media(min-width:1024px){.side-col{position:sticky;top:96px;align-self:start}}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:12px}
.qr-ph{
  position:relative;aspect-ratio:1/1;border:1px solid var(--line);border-radius:var(--radius-img);
  background:var(--bg-soft);display:flex;align-items:center;justify-content:center;color:var(--brand);
}
.qr-ph svg{width:58px;height:58px;opacity:.75}
.qr-ph::before,.qr-ph::after{content:"";position:absolute;width:22px;height:22px;border:2px solid var(--teal);border-radius:4px}
.qr-ph::before{top:10px;left:10px;border-right:0;border-bottom:0}
.qr-ph::after{bottom:10px;right:10px;border-left:0;border-top:0}
.side-list{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.side-list li{display:flex;gap:9px;font-size:13.5px;color:#33506B;line-height:1.75}
.side-list li .n{
  flex:0 0 auto;width:20px;height:20px;border-radius:6px;background:var(--brand-2);color:var(--brand);
  font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.side-price{font-size:12px;letter-spacing:.04em;display:inline-flex;margin-bottom:10px}

/* ============ steps ============ */
.step-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.step-grid{grid-template-columns:repeat(3,1fr);gap:20px}}
.step-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 20px;box-shadow:var(--shadow-1);transition:transform .25s,box-shadow .25s,border-color .25s;
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFE0F0}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:var(--brand-2);color:var(--brand);font-weight:700;font-size:14px;margin-bottom:12px;
  font-variant-numeric:tabular-nums;
}
.step-card h3{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:6px}
.step-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ============ prev / next ============ */
.pn-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.pn-grid{grid-template-columns:repeat(2,1fr)}}
.pn-card{
  display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:16px 18px;box-shadow:var(--shadow-1);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.pn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0F0}
.pn-dir{font-size:12px;color:var(--teal);letter-spacing:.06em;white-space:nowrap}
.pn-title{font-size:14.5px;font-weight:600;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pn-arrow{color:var(--brand);flex:0 0 auto;width:18px;height:18px;transition:transform .22s}
.pn-card:hover .pn-arrow{transform:translateX(4px)}

/* ============ related ============ */
.rel-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media(min-width:768px){.rel-grid{grid-template-columns:repeat(3,1fr)}}
.rel-card{
  display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);padding:14px;box-shadow:var(--shadow-1);
  transition:transform .22s,box-shadow .22s,border-color .22s;
}
.rel-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFE0F0}
.rel-thumb{flex:0 0 auto;width:78px;height:78px;border-radius:12px;overflow:hidden;background:var(--bg-soft);border:1px solid var(--line)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.04)}
.rel-body{min-width:0}
.rel-title{font-size:14.5px;font-weight:600;color:var(--ink);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-meta{margin-top:8px;font-size:12px;color:var(--muted-2)}
.empty-card{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--radius-card);background:var(--bg-soft);
  padding:30px 20px;text-align:center;
}
.empty-card svg{width:40px;height:40px;color:var(--muted-2);margin:0 auto 10px}
.empty-card p{font-size:14px;color:var(--muted)}

/* ============ qa ============ */
.qa-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.qa-row{padding:18px 20px;border-top:1px solid var(--line);transition:background .2s}
.qa-row:first-child{border-top:0}
.qa-row:hover{background:var(--bg-soft)}
.qa-q{font-size:15.5px;font-weight:600;color:var(--ink);display:flex;gap:10px}
.qa-q .mark{color:var(--teal);flex:0 0 auto;font-weight:700}
.qa-a{margin-top:6px;font-size:14.5px;color:var(--muted);line-height:1.85;padding-left:24px}

/* ============ cta bar ============ */
.cta-bar{
  background:var(--brand-2);border-radius:var(--radius-card);
  padding:26px 24px;display:flex;flex-direction:column;gap:16px;
  border:1px solid #D7E6F6;
}
@media(min-width:768px){.cta-bar{flex-direction:row;align-items:center;justify-content:space-between;padding:28px 32px}}
.cta-bar h2{font-size:clamp(19px,2.4vw,24px);font-weight:700;color:var(--ink);line-height:1.45}
.cta-bar p{margin-top:6px;font-size:14px;color:#3B5A79}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#C3D5E6;padding:52px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}}
.ft-top{font-size:20px;font-weight:700;color:#fff;letter-spacing:.08em}
.ft-sub{font-size:13px;font-weight:600;color:#9CC0DE;margin-top:4px}
.ft-desc{margin-top:12px;font-size:13.5px;line-height:1.85;color:#9BB2C7;max-width:320px}
.ft-qr{
  margin-top:16px;width:64px;height:64px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);display:flex;align-items:center;justify-content:center;color:#9CC0DE;
}
.ft-qr svg{width:30px;height:30px}
.ft-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.ft-links{display:flex;flex-direction:column;gap:9px;font-size:13.5px;color:#9BB2C7}
.ft-links a{color:#9BB2C7;transition:color .2s,transform .2s}
.ft-links a:hover{color:#fff;transform:translateX(3px)}
.ft-tags{display:flex;flex-wrap:wrap;gap:8px}
.ft-tags span{
  font-size:12px;padding:4px 10px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);color:#A9C1D6;background:rgba(255,255,255,.04);
}
.footer-bottom{
  margin-top:36px;border-top:1px solid rgba(255,255,255,.12);
  padding:18px 0 22px;display:flex;flex-direction:column;gap:8px;
  font-size:12.5px;color:#8AA2B8;
}
@media(min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* roulang page: category1 */
:root{
  --ink:#0B2239;
  --brand:#14456E;
  --brand-dark:#0E3557;
  --brand-2:#E8F1FA;
  --teal:#0E7C86;
  --amber:#C97A16;
  --bg:#FFFFFF;
  --bg-soft:#F5F8FC;
  --line:#E3EBF4;
  --muted:#5B7288;
  --muted-2:#94A7B8;
  --radius-card:20px;
  --radius-btn:12px;
  --radius-img:16px;
  --shadow-1:0 1px 2px rgba(11,34,57,.06),0 12px 28px -14px rgba(11,34,57,.16);
  --shadow-2:0 2px 4px rgba(11,34,57,.08),0 22px 40px -18px rgba(11,34,57,.24);
  --shadow-3:0 24px 60px -28px rgba(11,34,57,.32);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;letter-spacing:.01em;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
svg{display:block}
.container{width:100%;max-width:1200px;margin:0 auto;padding-inline:16px}
@media (min-width:768px){.container{padding-inline:24px}}
@media (min-width:1024px){.container{padding-inline:32px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:0 18px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background .22s,color .22s,border-color .22s,transform .22s,box-shadow .22s;
}
.btn svg{width:17px;height:17px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 10px 24px -16px rgba(20,69,110,.85)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--brand)}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-dark);transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn-block{width:100%}
.btn-sm{min-height:38px;padding:0 14px;font-size:13px}
.btn:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.btn[disabled]{opacity:.45;pointer-events:none}

/* ---------- badges ---------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-size:12px;letter-spacing:.04em;padding:4px 10px;border-radius:999px;line-height:1.6}
.badge-cat{background:var(--brand-2);color:var(--brand)}
.badge-price{background:#FDF4E8;border:1px solid rgba(201,122,22,.45);color:var(--amber)}
.badge-verify{background:rgba(14,124,134,.07);border:1px solid rgba(14,124,134,.35);color:var(--teal)}
.live-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--teal);border:1px solid rgba(14,124,134,.35);background:rgba(14,124,134,.06);padding:4px 10px;border-radius:999px;white-space:nowrap}
.live-badge .dot{width:7px;height:7px;border-radius:50%;background:var(--teal);animation:pulseDot 2s ease-in-out infinite}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.82)}}
@media (prefers-reduced-motion:reduce){.live-badge .dot{animation:none}}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;padding:10px 0 0;transition:background .25s,box-shadow .25s,padding .25s}
.site-header.is-scrolled{background:#fff;box-shadow:0 1px 0 var(--line),0 14px 30px -26px rgba(11,34,57,.65);padding-bottom:10px}
.nav-panel{
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:10px 14px;box-shadow:var(--shadow-1);
}
.brand{display:flex;flex-direction:column;flex:0 0 auto;line-height:1.2}
.brand-top{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:.06em}
.brand-sub{font-size:12px;font-weight:600;color:var(--brand);margin-top:2px}
.brand-note{font-size:11px;color:var(--muted);margin-top:3px;letter-spacing:.02em}
.nav-cards{display:none;align-items:center;gap:4px;margin-left:auto;flex-wrap:wrap}
.nav-item{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:8px 11px;border-radius:12px;font-size:13px;color:#32506E;
  transition:background .2s,color .2s,transform .2s;
}
.nav-item svg{width:16px;height:16px;flex:0 0 auto;opacity:.85}
.nav-item:hover{background:var(--bg-soft);color:var(--brand);transform:translateY(-1px)}
.nav-item.is-active{background:var(--brand-2);color:var(--brand);font-weight:600}
.nav-item.is-active::after{content:"";position:absolute;left:11px;right:11px;bottom:3px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:none;align-items:center;gap:10px}
.nav-toggle{
  margin-left:auto;display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;cursor:pointer;color:var(--brand);
  transition:border-color .2s,background .2s;
}
.nav-toggle:hover,.nav-toggle:focus-visible{border-color:var(--brand);background:var(--bg-soft);outline:none}
.nav-toggle span{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-drawer{display:none;margin-top:10px;background:#fff;border:1px solid var(--line);border-radius:20px;padding:14px;box-shadow:var(--shadow-1)}
.nav-drawer.is-open{display:block}
.drawer-item{display:flex;align-items:center;gap:10px;padding:13px 14px;border-radius:12px;border:1px solid var(--line);font-size:14px;color:#32506E;margin-bottom:8px;background:#fff;transition:background .2s,border-color .2s,color .2s}
.drawer-item svg{width:18px;height:18px;flex:0 0 auto}
.drawer-item:hover{background:var(--bg-soft);border-color:var(--brand);color:var(--brand)}
.drawer-item.is-active{background:var(--brand-2);border-color:var(--brand-2);color:var(--brand);font-weight:600}
.drawer-cta{margin-top:6px}
@media (min-width:1024px){
  .nav-cards{display:flex}
  .nav-actions{display:flex}
  .nav-toggle{display:none}
  .nav-drawer{display:none!important}
}

/* ---------- section base ---------- */
.section{padding:44px 0;position:relative}
@media (min-width:768px){.section{padding:64px 0}}
@media (min-width:1024px){.section{padding:80px 0}}
.section--soft{background:var(--bg-soft)}
.section--line{border-top:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:28px}
.section-eyebrow{display:inline-flex;align-items:center;gap:6px;font-size:12px;letter-spacing:.08em;color:var(--brand);background:var(--brand-2);padding:4px 10px;border-radius:999px;margin-bottom:12px}
.section-title{font-size:clamp(21px,2.8vw,30px);line-height:1.35;font-weight:700;color:var(--ink)}
.section-desc{margin-top:12px;font-size:15px;color:var(--muted);line-height:1.85}

/* ---------- category hero ---------- */
.cat-hero{background:var(--bg-soft);border-bottom:1px solid var(--line);padding:36px 0 34px}
@media (min-width:1024px){.cat-hero{padding:52px 0 50px}}
.cat-hero-grid{display:flex;align-items:center;gap:24px;justify-content:space-between}
.cat-crumb{font-size:13px;color:var(--muted);margin-bottom:12px}
.cat-crumb a{color:var(--brand);border-bottom:1px dashed rgba(20,69,110,.4)}
.cat-crumb a:hover{border-bottom-style:solid}
.cat-h1{font-size:clamp(23px,3.4vw,34px);line-height:1.3;font-weight:700;letter-spacing:.01em}
.cat-h1 span{color:var(--brand)}
.cat-lead{margin-top:12px;max-width:720px;font-size:15px;color:var(--muted);line-height:1.85}
.cat-stats{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.qr-outline{
  display:none;flex:0 0 auto;width:112px;height:112px;border-radius:20px;
  border:1px solid rgba(20,69,110,.22);background:#fff;
  align-items:center;justify-content:center;color:var(--brand);
  box-shadow:var(--shadow-1);position:relative;
}
.qr-outline::before,.qr-outline::after{content:"";position:absolute;width:16px;height:16px;border:2px solid var(--teal);border-radius:4px;opacity:.55}
.qr-outline::before{top:12px;left:12px;border-right:none;border-bottom:none}
.qr-outline::after{bottom:12px;right:12px;border-left:none;border-top:none}
.qr-outline svg{width:56px;height:56px}
@media (min-width:768px){.qr-outline{display:flex}}

/* ---------- filter pills ---------- */
.filter-bar{display:flex;flex-wrap:wrap;gap:8px;padding:18px 0 0}
.pill{display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:999px;font-size:13px;border:1px solid var(--line);background:#fff;color:#32506E;transition:background .2s,color .2s,border-color .2s,transform .2s}
.pill:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-1px)}
.pill.is-current{background:var(--brand);border-color:var(--brand);color:#fff;font-weight:600}

/* ---------- list ---------- */
.list-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:900px){.list-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}}
.list-card{
  display:flex;flex-direction:column;gap:0;overflow:hidden;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);transition:box-shadow .28s,transform .28s,border-color .28s;
}
.list-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:#D2E0EF}
@media (min-width:640px){
  .list-card{flex-direction:row;align-items:stretch}
  .list-thumb{flex:0 0 40%;max-width:40%}
  .list-body{flex:1 1 60%}
}
.list-thumb{position:relative;overflow:hidden;background:#EDF3FA;aspect-ratio:16/10}
.list-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.list-card:hover .list-thumb img{transform:scale(1.03)}
.list-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px}
.list-title{font-size:16px;line-height:1.55;font-weight:600;color:var(--ink);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-desc{font-size:14px;line-height:1.8;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.list-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;font-size:12.5px;color:var(--muted-2);margin-top:auto;padding-top:6px}
.link-more{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;color:var(--brand)}
.link-more svg{width:15px;height:15px;transition:transform .22s}
.list-card:hover .link-more svg{transform:translateX(4px)}
.list-footer{display:flex;justify-content:center;margin-top:26px}
.empty-card{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;gap:12px;
  padding:44px 24px;text-align:center;background:#fff;border:1px dashed #CBDCEC;border-radius:var(--radius-card);
}
.empty-card .empty-ico{width:56px;height:56px;border-radius:16px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center}
.empty-card h3{font-size:16px;font-weight:600}
.empty-card p{font-size:14px;color:var(--muted)}

/* ---------- info cards ---------- */
.info-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:768px){.info-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;box-shadow:var(--shadow-1);transition:box-shadow .28s,transform .28s}
.info-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px)}
.info-ico{width:44px;height:44px;border-radius:12px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.info-ico svg{width:22px;height:22px}
.info-card h3{font-size:16px;font-weight:600;margin-bottom:6px}
.info-card p{font-size:14px;color:var(--muted);line-height:1.8}
.info-card .kv{font-size:22px;font-weight:700;color:var(--brand);margin-bottom:4px;font-variant-numeric:tabular-nums}

/* ---------- compare ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr;gap:22px;align-items:start}
@media (min-width:960px){.compare-wrap{grid-template-columns:0.85fr 1.15fr;gap:32px}}
.compare-figure{overflow:hidden;border-radius:var(--radius-img);border:1px solid var(--line);background:#EDF3FA;box-shadow:var(--shadow-1)}
.compare-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.compare-figure figcaption{padding:12px 16px;font-size:12.5px;color:var(--muted);background:#fff}
.compare-rows{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.compare-row{display:grid;grid-template-columns:1fr;gap:4px;padding:16px 20px;border-bottom:1px solid var(--line);transition:background .2s}
.compare-row:last-child{border-bottom:none}
.compare-row:hover{background:var(--bg-soft)}
@media (min-width:640px){.compare-row{grid-template-columns:180px 1fr;gap:16px;align-items:start}}
.compare-key{font-size:14px;font-weight:600;color:var(--brand)}
.compare-val{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- faq ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-1)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;background:transparent;border:none;text-align:left;cursor:pointer;
  font-size:15px;font-weight:600;color:var(--ink);transition:background .2s,color .2s;
}
.faq-q:hover{background:var(--bg-soft);color:var(--brand)}
.faq-q:focus-visible{outline:2px solid var(--teal);outline-offset:-2px}
.faq-plus{position:relative;flex:0 0 auto;width:20px;height:20px;color:var(--brand);transition:transform .2s}
.faq-plus::before,.faq-plus::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-plus::before{left:0;top:9px;width:20px;height:2px}
.faq-plus::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease}
.faq-a p{padding:0 20px 18px;font-size:14.5px;line-height:1.85;color:var(--muted)}

/* ---------- channel cards ---------- */
.channel-grid{display:grid;grid-template-columns:1fr;gap:14px}
@media (min-width:640px){.channel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.channel-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
.channel-card{display:flex;flex-direction:column;gap:10px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-1);transition:box-shadow .26s,transform .26s,border-color .26s}
.channel-card:hover{box-shadow:var(--shadow-2);transform:translateY(-3px);border-color:#D2E0EF}
.channel-card .c-ico{width:38px;height:38px;border-radius:11px;background:var(--brand-2);color:var(--brand);display:flex;align-items:center;justify-content:center}
.channel-card .c-ico svg{width:19px;height:19px}
.channel-card h3{font-size:15px;font-weight:600;line-height:1.5}
.channel-card p{font-size:13px;color:var(--muted);line-height:1.7}
.channel-card .c-go{margin-top:auto;display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:600;color:var(--brand)}
.channel-card .c-go svg{width:14px;height:14px;transition:transform .22s}
.channel-card:hover .c-go svg{transform:translateX(4px)}

/* ---------- cta bar ---------- */
.cta-bar{background:var(--brand-2);border-top:1px solid #D8E6F4;border-bottom:1px solid #D8E6F4}
.cta-inner{display:flex;flex-direction:column;gap:18px;align-items:flex-start;padding:32px 0}
@media (min-width:900px){.cta-inner{flex-direction:row;align-items:center;justify-content:space-between;padding:38px 0}}
.cta-inner h2{font-size:clamp(20px,2.5vw,26px);font-weight:700;color:var(--ink);line-height:1.4}
.cta-inner p{margin-top:8px;font-size:14.5px;color:#3D5B79;line-height:1.8;max-width:640px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink);color:#D7E3EF;padding:52px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px}
@media (min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.15fr .85fr 1fr 1fr;gap:32px}}
.ft-top{font-size:18px;font-weight:700;color:#fff;letter-spacing:.06em}
.ft-sub{font-size:12.5px;color:#9DBBD8;margin-top:4px}
.ft-desc{font-size:13.5px;color:#A9C2D9;line-height:1.85;margin-top:12px}
.ft-qr{width:64px;height:64px;border-radius:14px;border:1px solid rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;color:#8FB6D8;margin-top:14px}
.ft-qr svg{width:32px;height:32px}
.ft-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;letter-spacing:.04em}
.ft-links{display:flex;flex-direction:column;gap:9px;font-size:13.5px;color:#A9C2D9}
.ft-links a{color:#A9C2D9;transition:color .2s}
.ft-links a:hover{color:#fff}
.ft-tags{display:flex;flex-wrap:wrap;gap:8px}
.ft-tags span{font-size:12px;color:#B7CDE1;border:1px solid rgba(255,255,255,.14);border-radius:999px;padding:4px 10px}
.footer-bottom{display:flex;flex-direction:column;gap:8px;margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;color:#8FADC9}
@media (min-width:768px){.footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}}