/* roulang page: index */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1322;
  --bg-2:#101B2E;
  --surface:rgba(17,28,46,.62);
  --surface-solid:#111C2E;
  --stroke:rgba(120,160,210,.18);
  --stroke-strong:rgba(120,160,210,.32);
  --text:#EAF2FF;
  --muted:#9FB0C8;
  --brand:#4FE3C1;
  --brand-2:#8D7BFF;
  --accent:#FFB86B;
  --danger:#FF6B7A;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1220;
  --nav-muted:#5B6B82;
  --nav-border:#E8EEF7;
  --radius:22px;
  --radius-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-0);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-border);
  box-shadow:0 1px 0 var(--nav-border),0 8px 30px rgba(10,20,40,.06);
}
.nav-wrap{display:flex;align-items:center;gap:22px;height:70px}
.brand{display:flex;align-items:center;gap:10px;color:var(--nav-text);flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#4FE3C1,#8D7BFF);
  color:#04121a;display:grid;place-items:center;
  font-weight:800;font-size:18px;letter-spacing:0;
}
.brand-text strong{display:block;font-size:16px;font-weight:800;line-height:1.2;letter-spacing:.2px;color:var(--nav-text)}
.brand-text small{display:block;font-size:11px;color:var(--nav-muted);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  padding:9px 14px;border-radius:999px;font-size:14.5px;
  color:var(--nav-muted);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--nav-text);background:#F2F6FC}
.nav-links a.active{color:#04231C;background:#E4FBF4;font-weight:700}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:6px;
  background:#F3F6FB;border:1px solid var(--nav-border);
  border-radius:999px;padding:4px 6px 4px 14px;
  transition:border-color .18s ease,background .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,227,193,.16)}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--nav-text);width:180px}
.nav-search input::placeholder{color:#93A2B8}
.nav-search button{
  border:0;background:#0B1220;color:#fff;width:30px;height:30px;
  border-radius:50%;display:grid;place-items:center;font-size:12px;
  transition:background .18s ease,transform .18s ease;
}
.nav-search button:hover{background:#1B2A45;transform:scale(1.05)}
.nav-toggle{
  display:none;border:1px solid var(--nav-border);background:#fff;color:var(--nav-text);
  width:42px;height:42px;border-radius:12px;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:#0E8F76}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#04231C;box-shadow:0 10px 30px rgba(79,227,193,.28)}
.btn-primary:hover{background:#68F0D2;transform:translateY(-1px);box-shadow:0 14px 36px rgba(79,227,193,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(79,227,193,.26)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--stroke-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(79,227,193,.1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.link-more{
  display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:700;
  color:var(--brand);border-bottom:1px solid rgba(79,227,193,.35);padding-bottom:2px;
  transition:color .18s ease,border-color .18s ease;
}
.link-more:hover{color:#8BF4DE;border-color:#8BF4DE}
.link-more i{font-size:12px;transition:transform .18s ease}
.link-more:hover i{transform:translateX(3px)}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:76px 0 92px;background:var(--bg-0)}
.hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/d731b91f9fcb5c71.jpg');
  background-size:cover;background-position:center;
  opacity:.16;filter:saturate(.55);
}
.hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(120,160,210,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.055) 1px,transparent 1px);
  background-size:58px 58px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 0%,#000 25%,transparent 76%);
  mask-image:radial-gradient(ellipse at 50% 0%,#000 25%,transparent 76%);
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(560px 320px at 12% 8%,rgba(79,227,193,.16),transparent 70%),
    radial-gradient(620px 340px at 88% 22%,rgba(141,123,255,.16),transparent 72%),
    linear-gradient(180deg,rgba(7,11,20,.55),rgba(7,11,20,.96));
}
.hero-inner{position:relative;z-index:3;max-width:920px;margin:0 auto;text-align:center}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:rgba(79,227,193,.1);border:1px solid rgba(79,227,193,.32);
  color:#9CF3E0;font-size:13px;font-weight:600;letter-spacing:.5px;
}
.hero-tag i{font-size:12px}
.hero h1{
  font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.2;font-weight:800;
  margin:22px 0 20px;letter-spacing:-.5px;
}
.hero h1 .grad{
  background:linear-gradient(100deg,#4FE3C1 10%,#8D7BFF 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{color:var(--muted);font-size:16.5px;max-width:800px;margin:0 auto 32px;line-height:1.85}
.hero-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-note{margin-top:18px;font-size:13px;color:#7C8DA6}

/* before / after */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:60px;position:relative;z-index:3;text-align:left}
.compare-card{
  border-radius:var(--radius);padding:28px 26px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.compare-card:hover{transform:translateY(-3px)}
.compare-card.is-before{background:rgba(14,22,36,.72)}
.compare-card.is-after{
  border-color:rgba(79,227,193,.45);
  box-shadow:0 20px 60px rgba(79,227,193,.14),var(--shadow);
  background:linear-gradient(180deg,rgba(20,45,52,.66),rgba(15,25,42,.72));
}
.compare-title{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:700;margin-bottom:18px}
.compare-title .dot{width:9px;height:9px;border-radius:50%;background:#7C8DA6}
.compare-card.is-after .compare-title .dot{background:var(--brand);box-shadow:0 0 12px rgba(79,227,193,.8)}
.compare-card ul{display:grid;gap:13px}
.compare-card li{display:flex;gap:10px;font-size:14.5px;color:var(--muted);line-height:1.65}
.compare-card li i{margin-top:5px;font-size:12px;flex-shrink:0}
.is-before li i{color:#7C8DA6}
.is-after li i{color:var(--brand)}
.is-after li{color:#C9DAF0}

/* ---------- sections ---------- */
.section{padding:84px 0;position:relative}
.section--alt{background:var(--bg-1)}
.section--deep{background:linear-gradient(180deg,var(--bg-1),var(--bg-0))}
.section-head{max-width:780px;margin-bottom:46px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:2px;color:var(--brand);
  font-weight:700;margin-bottom:14px;text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--brand);opacity:.7}
.section-head h2{font-size:clamp(1.55rem,3vw,2.35rem);font-weight:800;line-height:1.32;letter-spacing:-.3px}
.section-head p{color:var(--muted);margin-top:14px;font-size:15.5px;line-height:1.8}

/* ---------- quick bar ---------- */
.quick-bar-wrap{padding:0 0 8px;background:var(--bg-0);position:relative;z-index:4;margin-top:-38px}
.quick-bar{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:center;
  padding:16px 20px;border-radius:20px;
  background:rgba(17,28,46,.82);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.quick-bar a{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;border-radius:999px;font-size:13.5px;font-weight:600;
  color:#C4D5EA;border:1px solid rgba(120,160,210,.22);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.quick-bar a i{font-size:11px;color:#7C8DA6;transition:color .18s ease,transform .18s ease}
.quick-bar a:hover{border-color:var(--brand);color:#fff;background:rgba(79,227,193,.1)}
.quick-bar a:hover i{color:var(--brand);transform:translateX(2px)}

/* ---------- cards ---------- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{
  border-radius:var(--radius);padding:26px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 14px 40px rgba(0,0,0,.28);
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
  display:flex;flex-direction:column;
}
.card:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.4);box-shadow:0 22px 54px rgba(0,0,0,.42)}
.card h3{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:10px}
.card p{color:var(--muted);font-size:14.5px;line-height:1.75}
.card-thumb{
  border-radius:16px;overflow:hidden;margin-bottom:18px;
  border:1px solid rgba(120,160,210,.16);background:#0A1220;
  aspect-ratio:16/10;
}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-thumb img{transform:scale(1.05)}
.card-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:rgba(79,227,193,.12);border:1px solid rgba(79,227,193,.28);
  color:var(--brand);font-size:18px;margin-bottom:16px;
}
.card-icon.violet{background:rgba(141,123,255,.12);border-color:rgba(141,123,255,.3);color:#B4A8FF}
.card-icon.orange{background:rgba(255,184,107,.12);border-color:rgba(255,184,107,.3);color:var(--accent)}
.card-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:auto;padding-top:16px}
.badge{
  display:inline-flex;align-items:center;gap:5px;
  padding:4px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(79,227,193,.1);border:1px solid rgba(79,227,193,.26);color:#8FF0DB;
}
.badge.violet{background:rgba(141,123,255,.12);border-color:rgba(141,123,255,.28);color:#BEB4FF}
.badge.grey{background:rgba(120,160,210,.1);border-color:rgba(120,160,210,.24);color:#A9BBD3}
.badge.orange{background:rgba(255,184,107,.12);border-color:rgba(255,184,107,.28);color:#FFC894}

/* ---------- stats ---------- */
.stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--stroke);background:rgba(17,28,46,.5);
}
.stat-item{padding:34px 26px;border-right:1px solid var(--stroke);transition:background .22s ease}
.stat-item:last-child{border-right:0}
.stat-item:hover{background:rgba(79,227,193,.06)}
.stat-num{
  font-size:clamp(1.7rem,3vw,2.4rem);font-weight:800;line-height:1.1;
  color:var(--brand);letter-spacing:-1px;font-variant-numeric:tabular-nums;
  text-shadow:0 0 26px rgba(79,227,193,.35);
}
.stat-label{font-size:14px;font-weight:600;margin-top:10px}
.stat-desc{font-size:13px;color:var(--muted);margin-top:6px;line-height:1.65}

/* ---------- compare table ---------- */
.table-wrap{
  overflow-x:auto;border-radius:var(--radius);
  border:1px solid var(--stroke);background:rgba(17,28,46,.55);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
table.compare-table{width:100%;border-collapse:collapse;min-width:720px}
.compare-table th,.compare-table td{padding:18px 22px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--stroke)}
.compare-table thead th{font-size:13.5px;letter-spacing:.5px;color:#A9BBD3;font-weight:700;background:rgba(120,160,210,.06)}
.compare-table tbody tr:last-child td{border-bottom:0}
.compare-table tbody tr{transition:background .18s ease}
.compare-table tbody tr:hover{background:rgba(79,227,193,.05)}
.compare-table td:first-child{font-weight:600;color:#D6E4F5}
.compare-table td.muted-cell{color:var(--muted)}
.compare-table td.best{color:#C9FBEE;background:rgba(79,227,193,.07);font-weight:600}
.compare-table thead th.best-head{color:#04231C;background:var(--brand);font-weight:800}
.compare-table i.fa-check{color:var(--brand);margin-right:8px;font-size:12px}
.compare-table i.fa-xmark{color:#6B7C93;margin-right:8px;font-size:12px}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:step}
.step{
  position:relative;padding:28px 24px;border-radius:var(--radius);
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.4)}
.step-num{
  width:42px;height:42px;border-radius:50%;display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#04231C;background:var(--brand);
  box-shadow:0 8px 24px rgba(79,227,193,.32);margin-bottom:16px;
  font-variant-numeric:tabular-nums;
}
.step h3{font-size:16px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--muted);line-height:1.7}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.bento-big{grid-column:span 2;min-height:230px;justify-content:flex-end}
.bento-small{grid-column:span 1}
.bento-big h3{font-size:19px}
.bento-big .big-icon{
  width:52px;height:52px;border-radius:16px;display:grid;place-items:center;
  background:rgba(79,227,193,.13);border:1px solid rgba(79,227,193,.3);
  color:var(--brand);font-size:20px;margin-bottom:auto;
}

/* ---------- scenes ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:20px}
.scene{
  grid-column:span 2;border-radius:var(--radius);padding:26px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .22s ease,border-color .22s ease;
  display:flex;flex-direction:column;
}
.scene:nth-child(4){grid-column:span 3}
.scene:nth-child(5){grid-column:span 3}
.scene:nth-child(2){transform:translateY(18px)}
.scene:hover{transform:translateY(-4px);border-color:rgba(141,123,255,.45)}
.scene:nth-child(2):hover{transform:translateY(14px)}
.scene h3{font-size:16.5px;font-weight:700;margin-bottom:10px}
.scene p{font-size:14px;color:var(--muted);line-height:1.72;margin-bottom:16px}
.scene-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:auto}

/* ---------- city matrix ---------- */
.matrix-panel{
  border-radius:var(--radius);padding:34px;
  background:linear-gradient(160deg,rgba(20,34,56,.85),rgba(12,20,34,.9));
  border:1px solid var(--stroke);position:relative;overflow:hidden;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.matrix-panel::after{
  content:"";position:absolute;right:-120px;top:-120px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(141,123,255,.24),transparent 68%);
  pointer-events:none;
}
.matrix-group{margin-bottom:26px;position:relative;z-index:2}
.matrix-group:last-of-type{margin-bottom:20px}
.matrix-label{font-size:13px;font-weight:700;letter-spacing:1.5px;color:#8FA3BC;margin-bottom:14px}
.chips{display:flex;flex-wrap:wrap;gap:10px}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:999px;font-size:13.5px;font-weight:600;
  background:rgba(120,160,210,.08);border:1px solid rgba(120,160,210,.22);
  color:#C4D5EA;transition:border-color .18s ease,color .18s ease,background .18s ease,transform .18s ease;
}
.chip:hover{border-color:var(--brand);color:#fff;background:rgba(79,227,193,.14);transform:translateY(-1px)}
.chip.type{background:rgba(141,123,255,.1);border-color:rgba(141,123,255,.24)}

/* ---------- pricing ---------- */
.plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;align-items:stretch}
.plan{
  border-radius:var(--radius);padding:30px 28px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  display:flex;flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.plan:hover{transform:translateY(-4px);border-color:rgba(120,160,210,.4)}
.plan.recommended{
  border-color:rgba(79,227,193,.5);
  background:linear-gradient(180deg,rgba(23,52,56,.72),rgba(14,24,40,.82));
  box-shadow:0 24px 60px rgba(79,227,193,.16);
  transform:translateY(-10px);
}
.plan.recommended:hover{transform:translateY(-14px)}
.plan-badge{
  display:inline-flex;width:fit-content;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;color:#04231C;background:var(--brand);margin-bottom:14px;
}
.plan h3{font-size:18px;font-weight:800;margin-bottom:8px}
.plan-sub{font-size:13.5px;color:var(--muted);margin-bottom:22px;line-height:1.7}
.plan ul{display:grid;gap:12px;margin-bottom:26px}
.plan li{display:flex;gap:10px;font-size:14px;color:#C0D1E6;line-height:1.65}
.plan li i{color:var(--brand);font-size:12px;margin-top:5px;flex-shrink:0}
.plan .btn{margin-top:auto}
.plan-note{font-size:12.5px;color:#7C8DA6;margin-top:14px;line-height:1.6}

/* ---------- reviews ---------- */
.review-wall{columns:2;column-gap:22px}
.review{
  break-inside:avoid;margin-bottom:22px;border-radius:var(--radius);padding:24px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .22s ease,border-color .22s ease;
}
.review:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.38)}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,rgba(79,227,193,.35),rgba(141,123,255,.35));
  border:1px solid rgba(120,160,210,.3);
  display:grid;place-items:center;font-weight:800;font-size:15px;color:#DFF6FF;
}
.review-name{font-size:14.5px;font-weight:700}
.review-city{font-size:12.5px;color:#8698B0}
.review p{font-size:14.5px;color:#C0D1E6;line-height:1.75}
.review-foot{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}

/* ---------- showcase ---------- */
.showcase{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.shot{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--stroke);
  background:#0A1220;position:relative;
  transition:transform .22s ease,border-color .22s ease;
}
.shot:hover{transform:translateY(-4px);border-color:rgba(79,227,193,.45)}
.shot img{width:100%;height:230px;object-fit:cover}
.shot-body{padding:20px 22px 24px}
.shot-body h3{font-size:16px;font-weight:700;margin-bottom:8px}
.shot-body p{font-size:13.8px;color:var(--muted);line-height:1.7}

/* ---------- news ---------- */
.news-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.news-item{
  display:block;border-radius:18px;padding:24px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.news-item:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.42);background:rgba(23,38,60,.7)}
.news-item h3{font-size:16.5px;font-weight:700;line-height:1.5;margin:12px 0 10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item p{font-size:14px;color:var(--muted);line-height:1.72;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:16px;font-size:12.5px;color:#8698B0}
.empty-state{
  border-radius:var(--radius);padding:52px 28px;text-align:center;
  border:1px dashed rgba(120,160,210,.3);background:rgba(17,28,46,.45);
}
.empty-state i{font-size:30px;color:#5B6B82;margin-bottom:14px}
.empty-state h3{font-size:16px;font-weight:700;margin-bottom:8px}
.empty-state p{font-size:14px;color:var(--muted)}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:0.85fr 1.15fr;gap:48px;align-items:start}
.faq-aside h2{font-size:clamp(1.55rem,3vw,2.2rem);font-weight:800;line-height:1.32}
.faq-aside p{color:var(--muted);margin-top:16px;font-size:15px;line-height:1.8}
.faq-list{display:grid;gap:12px}
.faq-item{
  border-radius:18px;border:1px solid var(--stroke);
  background:var(--surface);overflow:hidden;
  transition:border-color .2s ease,background .2s ease;
}
.faq-item.open{border-color:rgba(79,227,193,.42);background:rgba(20,36,52,.72)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;color:var(--text);
  font-size:15px;font-weight:600;text-align:left;line-height:1.6;
}
.faq-q:hover{color:var(--brand)}
.faq-q .icon{
  width:26px;height:26px;border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;font-size:11px;
  border:1px solid rgba(120,160,210,.3);color:#A9BBD3;
  transition:transform .24s ease,border-color .24s ease,color .24s ease;
}
.faq-item.open .faq-q .icon{transform:rotate(180deg);border-color:var(--brand);color:var(--brand)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a-inner{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- final cta ---------- */
.cta-section{padding:84px 0 96px;background:var(--bg-0);position:relative;overflow:hidden}
.cta-panel{
  position:relative;border-radius:28px;padding:52px 48px;
  background:linear-gradient(135deg,rgba(21,44,58,.92),rgba(20,24,50,.92));
  border:1px solid rgba(79,227,193,.28);
  box-shadow:0 30px 80px rgba(0,0,0,.45);
  display:grid;grid-template-columns:1.4fr .6fr;gap:40px;align-items:center;
  overflow:hidden;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,160,210,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.06) 1px,transparent 1px);
  background-size:44px 44px;opacity:.7;pointer-events:none;
}
.cta-panel::after{
  content:"";position:absolute;right:-80px;bottom:-140px;width:360px;height:360px;
  background:radial-gradient(circle,rgba(79,227,193,.24),transparent 70%);pointer-events:none;
}
.cta-copy{position:relative;z-index:2}
.cta-copy h2{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:800;line-height:1.35}
.cta-copy p{color:#B5C7DD;margin-top:16px;font-size:15px;line-height:1.8;max-width:560px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.cta-qr{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;gap:12px}
.qr-box{
  width:150px;height:150px;border-radius:20px;
  background:rgba(255,255,255,.06);border:1px dashed rgba(120,160,210,.4);
  display:grid;place-items:center;color:#7C8DA6;font-size:12.5px;text-align:center;padding:12px;
  line-height:1.6;
}
.qr-box i{font-size:26px;margin-bottom:8px;display:block;color:rgba(79,227,193,.6)}
.cta-qr small{font-size:12.5px;color:#8FA3BC;text-align:center}

/* ---------- footer ---------- */
.site-footer{background:#050810;border-top:1px solid rgba(120,160,210,.12);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:34px;padding-bottom:48px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#7C8DA6}
.footer-brand p{font-size:13.5px;color:#8698B0;line-height:1.8;max-width:280px}
.footer-col h4{font-size:14px;font-weight:700;color:#E4EEFA;margin-bottom:16px;letter-spacing:.5px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:13.5px;color:#8698B0;transition:color .18s ease}
.footer-col a:hover{color:var(--brand)}
.footer-qr .qr-box{width:110px;height:110px;background:rgba(255,255,255,.04)}
.footer-qr small{display:block;margin-top:12px;font-size:12.5px;color:#8698B0;line-height:1.7}
.footer-bottom{
  border-top:1px solid rgba(120,160,210,.12);
  padding:22px 0 30px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;font-size:12.5px;color:#6B7C93;
}
.footer-bottom a{color:#8FA3BC;transition:color .18s ease}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- floating bar ---------- */
.float-bar{
  position:fixed;left:50%;bottom:22px;transform:translate(-50%,140%);
  z-index:90;display:flex;align-items:center;gap:16px;
  padding:12px 16px 12px 22px;border-radius:999px;
  background:rgba(16,29,46,.94);border:1px solid rgba(79,227,193,.35);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:0 22px 60px rgba(0,0,0,.55);
  transition:transform .34s cubic-bezier(.2,.9,.3,1.2);
  max-width:calc(100% - 40px);
}
.float-bar.show{transform:translate(-50%,0)}
.float-bar span{font-size:13.8px;color:#C7D8EC;font-weight:600;white-space:nowrap}
.float-close{
  border:1px solid rgba(120,160,210,.3);background:transparent;color:#8698B0;
  width:28px;height:28px;border-radius:50%;display:grid;place-items:center;font-size:11px;
  transition:color .18s ease,border-color .18s ease;
}
.float-close:hover{color:#fff;border-color:var(--danger)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .nav-search{display:none}
  .bento{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bento-big{grid-column:span 2}
  .bento-small{grid-column:span 1}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px}
  .footer-qr{grid-column:span 4}
  .footer-qr .qr-box{margin:0 auto}
  .footer-qr small{text-align:center}
}
@media (max-width:1023px){
  .nav-links{
    position:absolute;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:14px 18px 20px;background:#fff;
    border-bottom:1px solid var(--nav-border);
    box-shadow:0 22px 44px rgba(10,20,40,.14);
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:12px;font-size:15px}
  .nav-toggle{display:grid;place-items:center}
  .nav-right{gap:10px}
  .section{padding:66px 0}
  .hero{padding:56px 0 74px}
  .compare{grid-template-columns:1fr;margin-top:44px}
  .grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat-item{border-bottom:1px solid var(--stroke)}
  .stat-item:nth-child(2n){border-right:0}
  .stat-item:nth-last-child(-n+2){border-bottom:0}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .scene,.scene:nth-child(4),.scene:nth-child(5){grid-column:span 1}
  .scene:nth-child(2){transform:none}
  .scene:nth-child(2):hover{transform:translateY(-4px)}
  .plan-grid{grid-template-columns:1fr;gap:18px}
  .plan.recommended{transform:none}
  .plan.recommended:hover{transform:translateY(-4px)}
  .review-wall{columns:1}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .cta-panel{grid-template-columns:1fr;padding:38px 28px;gap:28px}
  .cta-qr{align-items:flex-start}
  .showcase{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .container{padding:0 18px}
  .nav-wrap{height:64px;gap:12px}
  .brand-text small{display:none}
  .nav-links{top:64px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .bento{grid-template-columns:1fr}
  .bento-big,.bento-small{grid-column:span 1;min-height:auto}
  .stats{grid-template-columns:1fr}
  .stat-item{border-right:0!important;border-bottom:1px solid var(--stroke)}
  .stat-item:last-child{border-bottom:0}
  .steps{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr}
  .quick-bar{border-radius:16px;padding:14px;gap:8px;justify-content:flex-start}
  .quick-bar a{font-size:13px;padding:8px 13px}
  .hero h1{letter-spacing:-.3px}
  .hero-actions .btn{width:100%}
  .compare-card{padding:22px 20px}
  .card{padding:22px}
  .matrix-panel{padding:24px 20px}
  .section{padding:56px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;padding-bottom:36px}
  .footer-brand{grid-column:span 2}
  .footer-qr{grid-column:span 2}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-panel{padding:30px 22px;border-radius:22px}
  .cta-actions .btn{width:100%}
  .float-bar{bottom:14px;padding:10px 12px 10px 16px;gap:10px}
  .float-bar span{font-size:12.5px;white-space:normal}
  .float-bar .btn{padding:8px 14px;font-size:12.5px}
}
@media (max-width:520px){
  .brand-text strong{font-size:14.5px}
  .hero-lead{font-size:15px}
  .section-head p{font-size:14.5px}
}

/* roulang page: category1 */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1322;
  --bg-2:#101B2E;
  --surface:rgba(17,28,46,.62);
  --surface-solid:#111C2E;
  --stroke:rgba(120,160,210,.18);
  --stroke-strong:rgba(120,160,210,.32);
  --text:#EAF2FF;
  --muted:#9FB0C8;
  --brand:#4FE3C1;
  --brand-2:#8D7BFF;
  --accent:#FFB86B;
  --danger:#FF6B7A;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1220;
  --nav-muted:#5B6B82;
  --nav-border:#E8EEF7;
  --radius:22px;
  --radius-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-0);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
/* header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-border);
  box-shadow:0 1px 0 var(--nav-border),0 8px 30px rgba(10,20,40,.06);
}
.nav-wrap{display:flex;align-items:center;gap:22px;height:70px}
.brand{display:flex;align-items:center;gap:10px;color:var(--nav-text);flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#4FE3C1,#8D7BFF);
  color:#04121a;display:grid;place-items:center;
  font-weight:800;font-size:18px;
}
.brand-text strong{display:block;font-size:16px;font-weight:800;line-height:1.2;letter-spacing:.2px;color:var(--nav-text)}
.brand-text small{display:block;font-size:11px;color:var(--nav-muted);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  padding:9px 14px;border-radius:999px;font-size:14.5px;
  color:var(--nav-muted);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--nav-text);background:#F2F6FC}
.nav-links a.active{color:#04231C;background:#E4FBF4;font-weight:700}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:6px;
  background:#F3F6FB;border:1px solid var(--nav-border);
  border-radius:999px;padding:4px 6px 4px 14px;
  transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,227,193,.16)}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--nav-text);width:180px}
.nav-search input::placeholder{color:#93A2B8}
.nav-search button{
  border:0;background:#0B1220;color:#fff;width:30px;height:30px;
  border-radius:50%;display:grid;place-items:center;font-size:12px;
  transition:background .18s ease,transform .18s ease;
}
.nav-search button:hover{background:#1B2A45;transform:scale(1.05)}
.nav-toggle{
  display:none;border:1px solid var(--nav-border);background:#fff;color:var(--nav-text);
  width:42px;height:42px;border-radius:12px;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:#0E8F76}
/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#04231C;box-shadow:0 10px 30px rgba(79,227,193,.28)}
.btn-primary:hover{background:#68F0D2;transform:translateY(-1px);box-shadow:0 14px 36px rgba(79,227,193,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(79,227,193,.26)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--stroke-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(79,227,193,.1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}
/* category hero */
.cat-hero{
  position:relative;overflow:hidden;padding:62px 0 58px;background:var(--bg-0);
  border-bottom:1px solid rgba(120,160,210,.12);
}
.cat-hero-bg{
  position:absolute;inset:0;
  background-image:url('/assets/images/c19531c0ae9b4a78.webp');
  background-size:cover;background-position:center;opacity:.14;filter:saturate(.6);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(120,160,210,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at 40% 10%,#000 25%,transparent 76%);
  mask-image:radial-gradient(ellipse at 40% 10%,#000 25%,transparent 76%);
}
.cat-hero::after{
  content:"";position:absolute;inset:0;z-index:1;
  background:
    radial-gradient(520px 300px at 10% 0%,rgba(79,227,193,.15),transparent 70%),
    radial-gradient(520px 320px at 92% 90%,rgba(141,123,255,.15),transparent 72%),
    linear-gradient(180deg,rgba(7,11,20,.4),rgba(7,11,20,.94));
}
.cat-hero-inner{position:relative;z-index:3;display:grid;grid-template-columns:1.55fr .95fr;gap:40px;align-items:center}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:#7C8DA6;margin-bottom:16px;flex-wrap:wrap}
.crumb a{color:#9FB0C8;transition:color .18s ease}
.crumb a:hover{color:var(--brand)}
.crumb i{font-size:10px;color:#5B6B82}
.cat-hero h1{
  font-size:clamp(1.75rem,3.6vw,2.75rem);
  line-height:1.26;font-weight:800;letter-spacing:-.4px;margin-bottom:16px;
}
.cat-hero h1 .grad{
  background:linear-gradient(100deg,#4FE3C1 10%,#8D7BFF 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.cat-hero p.lead{color:var(--muted);font-size:16px;max-width:640px;line-height:1.85;margin-bottom:24px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.qr-panel{
  border-radius:var(--radius);padding:24px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
}
.qr-panel h2{font-size:15px;font-weight:700;color:#CFE1F7;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.qr-panel h2 i{color:var(--brand)}
.qr-fake{
  border-radius:16px;background:linear-gradient(145deg,rgba(79,227,193,.16),rgba(141,123,255,.14));
  border:1px dashed rgba(79,227,193,.4);
  height:132px;display:grid;place-items:center;color:#9CF3E0;font-size:34px;margin-bottom:14px;
}
.qr-cities{display:flex;flex-wrap:wrap;gap:8px}
.qr-cities span{
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);color:#B7C8DE;
}
/* section basics */
.section{padding:76px 0}
.section-alt{background:var(--bg-1);border-top:1px solid rgba(120,160,210,.1);border-bottom:1px solid rgba(120,160,210,.1)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12.5px;font-weight:700;letter-spacing:1.2px;color:#7FE9D2;
  padding:6px 14px;border-radius:999px;
  background:rgba(79,227,193,.09);border:1px solid rgba(79,227,193,.28);
  margin-bottom:14px;
}
.section-head h2{font-size:clamp(1.5rem,2.8vw,2.15rem);font-weight:800;line-height:1.3;letter-spacing:-.3px}
.section-head p{color:var(--muted);margin-top:12px;font-size:15.5px}
/* filter bar */
.filter-bar{
  border-radius:var(--radius);padding:22px 24px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 16px 46px rgba(0,0,0,.28);
  margin-top:-38px;position:relative;z-index:5;
}
.filter-row{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.filter-row + .filter-row{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(120,160,210,.16)}
.filter-label{font-size:12.5px;color:#7C8DA6;letter-spacing:.5px;min-width:56px}
.chip{
  border:1px solid var(--stroke);background:rgba(255,255,255,.04);
  color:#B7C8DE;font-size:13.5px;padding:8px 16px;border-radius:999px;
  transition:all .18s ease;
}
.chip:hover{border-color:rgba(79,227,193,.55);color:#DFFBF3;background:rgba(79,227,193,.08)}
.chip.is-active{
  border-color:var(--brand);color:#04231C;background:var(--brand);font-weight:700;
  box-shadow:0 8px 22px rgba(79,227,193,.26);
}
.filter-search{
  margin-left:auto;display:flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.05);border:1px solid var(--stroke);
  border-radius:var(--radius-sm);padding:8px 12px;min-width:250px;
  transition:border-color .18s ease,box-shadow .18s ease;
}
.filter-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(79,227,193,.15)}
.filter-search i{color:#7C8DA6;font-size:13px}
.filter-search input{background:transparent;border:2;outline:none;color:var(--text);font-size:14px;width:100%}
.filter-search input::placeholder{color:#6E7F98}
/* city cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.city-card{
  border-radius:var(--radius);overflow:hidden;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  box-shadow:0 14px 40px rgba(0,0,0,.26);
  display:flex;flex-direction:column;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease;
}
.city-card:hover{transform:translateY(-4px);border-color:var(--stroke-strong);box-shadow:0 24px 56px rgba(0,0,0,.38)}
.city-card .thumb{position:relative;height:158px;overflow:hidden}
.city-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.city-card:hover .thumb img{transform:scale(1.05)}
.city-card .thumb::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,11,20,.05),rgba(7,11,20,.72));
}
.city-card .thumb .type{
  position:absolute;left:14px;bottom:12px;z-index:2;
  font-size:12px;font-weight:700;padding:5px 12px;border-radius:999px;
  background:rgba(79,227,193,.9);color:#04231C;
}
.city-card .body{padding:20px 20px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.city-card h3{font-size:17px;font-weight:700;letter-spacing:-.2px}
.city-card p{color:var(--muted);font-size:14px;line-height:1.7;flex:1}
.tag-row{display:flex;flex-wrap:wrap;gap:7px}
.tag{
  font-size:11.5px;padding:4px 10px;border-radius:999px;
  background:rgba(141,123,255,.13);border:1px solid rgba(141,123,255,.3);color:#C9C0FF;
}
.tag.tag-green{background:rgba(79,227,193,.12);border-color:rgba(79,227,193,.32);color:#9CF3E0}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:10px;border-top:1px dashed rgba(120,160,210,.16)}
.card-foot .time{font-size:12px;color:#7C8DA6;display:flex;align-items:center;gap:6px}
.card-link{font-size:13.5px;font-weight:700;color:var(--brand);display:inline-flex;align-items:center;gap:6px;transition:gap .18s ease,color .18s ease}
.card-link:hover{gap:10px;color:#8DF6DE}
.more-row{display:flex;justify-content:center;margin-top:34px}
.empty-note{
  text-align:center;color:#7C8DA6;font-size:14px;padding:34px 0;
  border:1px dashed rgba(120,160,210,.24);border-radius:var(--radius);background:rgba(255,255,255,.02);
}
/* city matrix */
.matrix{display:flex;flex-wrap:wrap;gap:12px}
.matrix a{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;border-radius:999px;font-size:14px;color:#C4D4E8;
  background:rgba(255,255,255,.04);border:1px solid var(--stroke);
  transition:all .18s ease;
}
.matrix a:hover{border-color:var(--brand);color:#DFFBF3;background:rgba(79,227,193,.1);transform:translateY(-2px)}
.matrix a i{font-size:12px;color:var(--brand)}
/* steps */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{
  position:relative;border-radius:var(--radius);padding:26px 24px;
  background:var(--surface);border:1px solid var(--stroke);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  transition:transform .22s ease,border-color .22s ease;
}
.step:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.45)}
.step .num{
  width:40px;height:40px;border-radius:13px;display:grid;place-items:center;
  font-weight:800;font-size:16px;color:#04231C;
  background:linear-gradient(135deg,#4FE3C1,#8D7BFF);margin-bottom:16px;
  box-shadow:0 8px 24px rgba(79,227,193,.24);
}
.step h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px;line-height:1.75}
/* safety */
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.safety-item{
  display:flex;gap:16px;padding:22px;border-radius:var(--radius-sm);
  background:rgba(255,255,255,.03);border:1px solid var(--stroke);
  transition:border-color .2s ease,background .2s ease;
}
.safety-item:hover{border-color:rgba(255,184,107,.44);background:rgba(255,184,107,.05)}
.safety-item .ico{
  flex:0 0 42px;width:42px;height:42px;border-radius:12px;display:grid;place-items:center;
  background:rgba(255,184,107,.13);color:var(--accent);font-size:16px;
}
.safety-item h3{font-size:15.5px;font-weight:700;margin-bottom:6px}
.safety-item p{color:var(--muted);font-size:13.8px;line-height:1.72}
/* faq */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.35fr;gap:44px;align-items:start}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--stroke);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item.open{border-color:rgba(79,227,193,.42);background:rgba(79,227,193,.06)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:transparent;border:0;color:var(--text);
  font-size:15.5px;font-weight:600;text-align:left;min-height:56px;
  transition:color .18s ease;
}
.faq-q:hover{color:var(--brand)}
.faq-q i{font-size:13px;color:var(--brand);transition:transform .24s ease}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.faq-a p{padding:0 20px 18px;color:var(--muted);font-size:14.2px;line-height:1.8}
/* news */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-item{
  display:flex;gap:16px;padding:16px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--stroke);
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.news-item:hover{transform:translateY(-2px);border-color:var(--stroke-strong);background:rgba(255,255,255,.05)}
.news-item .nthumb{flex:0 0 110px;width:110px;height:82px;border-radius:12px;overflow:hidden;border:1px solid rgba(120,160,210,.2)}
.news-item .nthumb img{width:100%;height:100%;object-fit:cover}
.news-item .nbody{display:flex;flex-direction:column;gap:6px;min-width:0}
.news-item h3{font-size:15px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-item p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.65}
.news-meta{display:flex;gap:10px;font-size:11.5px;color:#7C8DA6;margin-top:auto;flex-wrap:wrap}
.news-meta .cat{color:#9CF3E0}
/* cta */
.cta-panel{
  position:relative;overflow:hidden;border-radius:26px;padding:46px;
  background:linear-gradient(130deg,rgba(79,227,193,.13),rgba(141,123,255,.12)),rgba(17,28,46,.7);
  border:1px solid rgba(79,227,193,.28);
  box-shadow:0 26px 70px rgba(0,0,0,.4);
  display:grid;grid-template-columns:1.4fr .8fr;gap:34px;align-items:center;
}
.cta-panel::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,160,210,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.06) 1px,transparent 1px);
  background-size:44px 44px;opacity:.5;pointer-events:none;
}
.cta-panel > *{position:relative;z-index:2}
.cta-panel h2{font-size:clamp(1.4rem,2.6vw,2rem);font-weight:800;line-height:1.3;margin-bottom:12px}
.cta-panel p{color:var(--muted);font-size:15px;margin-bottom:22px;max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-qr{
  border-radius:18px;border:1px dashed rgba(79,227,193,.45);
  background:rgba(7,11,20,.42);padding:22px;text-align:center;
}
.cta-qr i{font-size:38px;color:#9CF3E0;display:block;margin-bottom:10px}
.cta-qr span{font-size:13px;color:#B7C8DE;display:block;line-height:1.6}
/* footer */
.site-footer{background:var(--bg-1);border-top:1px solid rgba(120,160,210,.12);padding:56px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr .9fr .9fr .9fr .9fr;gap:30px}
.footer-col h4{font-size:14px;font-weight:700;color:#D6E4F5;margin-bottom:14px;letter-spacing:.3px}
.footer-brand .brand{margin-bottom:14px}
.footer-brand .brand-text strong{color:#EAF2FF}
.footer-brand .brand-text small{color:#7C8DA6}
.footer-brand p{color:var(--muted);font-size:13.5px;line-height:1.8;max-width:330px}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col ul a{font-size:13.5px;color:#9FB0C8;transition:color .18s ease}
.footer-col ul a:hover{color:var(--brand)}
.qr-box{
  border-radius:14px;border:1px dashed rgba(79,227,193,.4);
  background:rgba(79,227,193,.06);padding:18px;text-align:center;
  color:#9CF3E0;font-size:13px;font-weight:600;
}
.qr-box i{font-size:26px;display:block;margin-bottom:8px}
.footer-qr small{display:block;margin-top:10px;color:#7C8DA6;font-size:12px;line-height:1.6}
.footer-bottom{
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(120,160,210,.14);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  color:#7C8DA6;font-size:12.5px;
}
.footer-bottom a{color:#9FB0C8}
.footer-bottom a:hover{color:var(--brand)}
/* responsive */
@media (max-width:1100px){
  .cat-hero-inner{grid-template-columns:1fr;gap:28px}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
  .footer-qr{grid-column:span 3}
  .cta-panel{grid-template-columns:1fr;padding:36px}
}
@media (max-width:900px){
  .nav-links{
    position:absolute;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:#fff;border-bottom:1px solid var(--nav-border);
    box-shadow:0 18px 40px rgba(10,20,40,.12);
    padding:12px 16px 18px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;border-radius:12px;font-size:15px}
  .nav-search{display:none}
  .nav-toggle{display:grid;place-items:center}
  .faq-wrap{grid-template-columns:1fr;gap:26px}
  .steps{grid-template-columns:1fr}
  .safety-grid{grid-template-columns:1fr}
  .news-grid{grid-template-columns:1fr}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .section{padding:54px 0}
  .cat-hero{padding:44px 0 46px}
  .grid-3{grid-template-columns:1fr}
  .filter-bar{margin-top:-26px;padding:18px}
  .filter-row .filter-search{margin-left:0;width:100%;min-width:0}
  .cta-panel{padding:28px}
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-qr{grid-column:span 2}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .brand-text strong{font-size:14.5px}
}
@media (max-width:520px){
  .nav-wrap{gap:10px;height:64px}
  .nav-links{top:64px}
  .brand-mark{width:34px;height:34px;font-size:16px}
  .brand-text small{font-size:10px}
  .news-item .nthumb{flex:0 0 88px;width:88px;height:70px}
  .footer-grid{grid-template-columns:1fr}
  .footer-qr{grid-column:span 1}
  .card-foot{flex-direction:column;align-items:flex-start;gap:8px}
}

/* roulang page: article */
:root{
  --bg-0:#070B14;
  --bg-1:#0B1322;
  --bg-2:#101B2E;
  --surface:rgba(17,28,46,.62);
  --surface-solid:#111C2E;
  --stroke:rgba(120,160,210,.18);
  --stroke-strong:rgba(120,160,210,.32);
  --text:#EAF2FF;
  --muted:#9FB0C8;
  --brand:#4FE3C1;
  --brand-2:#8D7BFF;
  --accent:#FFB86B;
  --danger:#FF6B7A;
  --nav-bg:#FFFFFF;
  --nav-text:#0B1220;
  --nav-muted:#5B6B82;
  --nav-border:#E8EEF7;
  --radius:22px;
  --radius-sm:14px;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --container:1240px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  background:var(--bg-0);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
input{font-family:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.2px}
p{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--nav-bg);
  border-bottom:1px solid var(--nav-border);
  box-shadow:0 1px 0 var(--nav-border),0 8px 30px rgba(10,20,40,.06);
}
.nav-wrap{position:relative;display:flex;align-items:center;gap:22px;height:70px}
.brand{display:flex;align-items:center;gap:10px;color:var(--nav-text);flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#4FE3C1,#8D7BFF);
  color:#04121a;display:grid;place-items:center;
  font-weight:800;font-size:18px;
}
.brand-text strong{display:block;font-size:16px;font-weight:800;line-height:1.2;letter-spacing:.2px;color:var(--nav-text)}
.brand-text small{display:block;font-size:11px;color:var(--nav-muted);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:6px}
.nav-links a{
  padding:9px 14px;border-radius:999px;font-size:14.5px;
  color:var(--nav-muted);font-weight:500;
  transition:color .18s ease,background .18s ease;
}
.nav-links a:hover{color:var(--nav-text);background:#F2F6FC}
.nav-links a.active{color:#04231C;background:#E4FBF4;font-weight:700}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:6px;
  background:#F3F6FB;border:1px solid var(--nav-border);
  border-radius:999px;padding:4px 6px 4px 14px;
  transition:border-color .18s ease,background .18s ease;
}
.nav-search:focus-within{border-color:var(--brand);background:#fff;box-shadow:0 0 0 3px rgba(79,227,193,.16)}
.nav-search input{border:0;background:transparent;outline:none;font-size:13.5px;color:var(--nav-text);width:180px}
.nav-search input::placeholder{color:#93A2B8}
.nav-search button{
  border:0;background:#0B1220;color:#fff;width:30px;height:30px;
  border-radius:50%;display:grid;place-items:center;font-size:12px;
  transition:background .18s ease,transform .18s ease;
}
.nav-search button:hover{background:#1B2A45;transform:scale(1.05)}
.nav-toggle{
  display:none;border:1px solid var(--nav-border);background:#fff;color:var(--nav-text);
  width:42px;height:42px;border-radius:12px;font-size:16px;
}
.nav-toggle:hover{border-color:var(--brand);color:#0E8F76}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:700;font-size:15px;
  border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease,border-color .18s ease,color .18s ease;
}
.btn-primary{background:var(--brand);color:#04231C;box-shadow:0 10px 30px rgba(79,227,193,.28)}
.btn-primary:hover{background:#68F0D2;transform:translateY(-1px);box-shadow:0 14px 36px rgba(79,227,193,.4)}
.btn-primary:active{transform:translateY(1px);box-shadow:0 6px 18px rgba(79,227,193,.26)}
.btn-ghost{background:rgba(255,255,255,.04);border-color:var(--stroke-strong);color:var(--text)}
.btn-ghost:hover{border-color:var(--brand);background:rgba(79,227,193,.1);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}
.btn:focus-visible,a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--brand);outline-offset:3px;
}

/* ---------- read progress ---------- */
.read-progress{position:fixed;top:70px;left:0;height:3px;width:0;z-index:90;
  background:linear-gradient(90deg,var(--brand),var(--brand-2));
  box-shadow:0 0 14px rgba(79,227,193,.6);transition:width .08s linear}

/* ---------- article hero ---------- */
.article-hero{position:relative;overflow:hidden;padding:46px 0 46px;background:var(--bg-0);border-bottom:1px solid var(--stroke)}
.article-hero::before{
  content:"";position:absolute;inset:0;z-index:0;
  background-image:linear-gradient(rgba(120,160,210,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.06) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(ellipse at 28% 0%,#000 18%,transparent 74%);
  mask-image:radial-gradient(ellipse at 28% 0%,#000 18%,transparent 74%);
}
.article-hero::after{
  content:"";position:absolute;inset:0;z-index:0;
  background:
    radial-gradient(520px 300px at 14% 0%,rgba(79,227,193,.15),transparent 70%),
    radial-gradient(520px 320px at 86% 26%,rgba(141,123,255,.14),transparent 72%),
    linear-gradient(180deg,rgba(7,11,20,.4),rgba(7,11,20,.94));
}
.article-hero .container{position:relative;z-index:2}
.crumbs{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.crumbs a{color:var(--muted);transition:color .18s ease}
.crumbs a:hover{color:var(--brand)}
.crumbs i{font-size:10px;opacity:.55}
.crumbs .current{color:#C9D8EA}
.article-title{
  font-size:clamp(1.75rem,3.6vw,2.85rem);
  line-height:1.3;font-weight:800;letter-spacing:-.5px;
  margin:18px 0 20px;max-width:980px;
}
.article-meta{display:flex;align-items:center;gap:10px 20px;flex-wrap:wrap;font-size:13.5px;color:var(--muted)}
.article-meta .item{display:inline-flex;align-items:center;gap:7px}
.article-meta i{font-size:12px;color:#7C8DA6}
.badge-cat{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 14px;border-radius:999px;
  background:rgba(79,227,193,.12);border:1px solid rgba(79,227,193,.36);
  color:#9CF3E0;font-size:12.5px;font-weight:700;
}
.hero-foot{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-top:26px}
.share-row{display:flex;align-items:center;gap:10px;font-size:13px;color:#7C8DA6}
.share-row button{
  width:38px;height:38px;border-radius:50%;
  border:1px solid var(--stroke-strong);background:rgba(255,255,255,.04);
  color:#C6D6EA;font-size:14px;display:grid;place-items:center;
  transition:border-color .18s ease,color .18s ease,transform .18s ease,background .18s ease;
}
.share-row button:hover{border-color:var(--brand);color:var(--brand);background:rgba(79,227,193,.1);transform:translateY(-2px)}
.share-row button:active{transform:translateY(0)}
.article-cover{
  margin-top:28px;border-radius:20px;overflow:hidden;
  border:1px solid var(--stroke);box-shadow:var(--shadow);
  background:var(--bg-2);aspect-ratio:21/8;
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- sections ---------- */
.section{padding:76px 0}
.section-alt{background:var(--bg-1);border-top:1px solid var(--stroke);border-bottom:1px solid var(--stroke)}
.section-head{max-width:760px;margin-bottom:34px}
.section-head h2{font-size:clamp(1.45rem,2.6vw,2.1rem);font-weight:800;line-height:1.35;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;line-height:1.85}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;margin-bottom:14px;
  font-size:12.5px;font-weight:700;letter-spacing:1.6px;color:var(--brand);text-transform:uppercase;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--brand);display:block}

/* ---------- article layout ---------- */
.article-main{position:relative;padding:52px 0 84px;background:var(--bg-0)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:40px;align-items:start}
.article-panel{
  background:var(--surface);border:1px solid var(--stroke);
  border-radius:var(--radius);padding:38px 42px;
  -webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);
  box-shadow:var(--shadow);
}
.article-body{font-size:16.5px;line-height:1.9;color:#DCE7F6;word-break:break-word}
.article-body > *:first-child{margin-top:0}
.article-body > *:last-child{margin-bottom:0}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:clamp(1.28rem,2.2vw,1.6rem);font-weight:800;color:#fff;
  margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--brand);
  line-height:1.5;scroll-margin-top:100px;
}
.article-body h3{font-size:1.16rem;font-weight:700;color:#fff;margin:30px 0 12px;line-height:1.55;scroll-margin-top:100px}
.article-body h4{font-size:1.02rem;font-weight:700;color:#EAF2FF;margin:24px 0 10px}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;transition:color .18s ease}
.article-body a:hover{color:#8CF5E0}
.article-body strong,.article-body b{color:#fff;font-weight:700}
.article-body ul,.article-body ol{margin:0 0 18px;padding-left:22px}
.article-body li{margin:8px 0}
.article-body li::marker{color:var(--brand)}
.article-body blockquote{
  margin:22px 0;padding:16px 22px;
  border-left:3px solid var(--brand);
  background:rgba(79,227,193,.07);
  border-radius:0 14px 14px 0;color:#C6D6EA;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:16px;border:1px solid var(--stroke);margin:24px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:#7C8DA6;text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px}
.article-body th,.article-body td{border:1px solid var(--stroke);padding:10px 14px;text-align:left}
.article-body th{background:rgba(79,227,193,.09);color:#fff;font-weight:700}
.article-body hr{border:0;border-top:1px solid var(--stroke);margin:32px 0}
.article-body code{background:rgba(120,160,210,.14);padding:2px 7px;border-radius:6px;font-size:.92em;color:#9CF3E0}
.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;padding-top:26px;border-top:1px solid var(--stroke)}
.tag{
  padding:6px 14px;border-radius:999px;font-size:12.5px;
  background:rgba(141,123,255,.1);border:1px solid rgba(141,123,255,.3);
  color:#C9C1FF;
}
.empty-state{padding:44px 10px;text-align:center;display:grid;gap:20px;justify-items:center}
.empty-state i{font-size:34px;color:var(--muted)}
.empty-state h2{font-size:1.4rem;font-weight:800;color:#fff}

/* ---------- aside ---------- */
.article-aside{position:sticky;top:96px;display:grid;gap:18px}
.toc-card,.aside-card{
  background:var(--surface);border:1px solid var(--stroke);
  border-radius:20px;padding:20px 20px 18px;
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
}
.toc-card h3,.aside-card h3{
  font-size:12.5px;letter-spacing:1.8px;text-transform:uppercase;
  color:var(--brand);font-weight:800;margin-bottom:12px;
}
.toc-list{list-style:none;margin:0;padding:0;display:grid;gap:2px;max-height:50vh;overflow:auto}
.toc-list::-webkit-scrollbar{width:4px}
.toc-list::-webkit-scrollbar-thumb{background:var(--stroke-strong);border-radius:4px}
.toc-list a{
  display:block;padding:8px 12px;border-radius:10px;font-size:13.5px;
  color:var(--muted);border-left:2px solid transparent;
  transition:color .18s ease,background .18s ease,border-color .18s ease;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-list a:hover{background:rgba(79,227,193,.08);color:#fff}
.toc-list a.active{color:var(--brand);border-left-color:var(--brand);background:rgba(79,227,193,.1)}
.aside-card p{font-size:13.5px;color:var(--muted);line-height:1.8;margin-bottom:16px}
.qr-box{
  width:120px;height:120px;margin:0 auto 16px;border-radius:16px;
  border:1px dashed var(--stroke-strong);background:rgba(255,255,255,.03);
  display:grid;place-items:center;gap:6px;color:var(--muted);font-size:12px;text-align:center;
}
.qr-box i{font-size:30px;color:var(--brand)}

/* ---------- related ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
.rel-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--stroke);border-radius:18px;
  transition:transform .22s ease,border-color .22s ease,box-shadow .22s ease,background .22s ease;
}
.rel-card:hover{transform:translateY(-3px);border-color:var(--stroke-strong);box-shadow:var(--shadow);background:rgba(23,36,58,.75)}
.rel-card:active{transform:translateY(-1px)}
.rel-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--bg-2)}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .rel-thumb img{transform:scale(1.06)}
.rel-info{padding:18px 20px 20px;display:flex;flex-direction:column;gap:9px;flex:1}
.rel-cat{font-size:11.5px;letter-spacing:1.2px;color:var(--brand);font-weight:700;text-transform:uppercase}
.rel-info h3{font-size:15.5px;font-weight:700;color:#fff;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-info p{font-size:13.5px;color:var(--muted);line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-time{font-size:12.5px;color:#7C8DA6;margin-top:auto;padding-top:6px}
.rel-empty{
  border:1px dashed var(--stroke-strong);border-radius:18px;padding:34px 24px;
  text-align:center;color:var(--muted);font-size:14px;background:rgba(255,255,255,.02);
}
.rel-empty i{display:block;font-size:26px;margin-bottom:12px;color:#5F7189}

/* ---------- nav cards ---------- */
.nav-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.nav-card{
  display:block;padding:26px 28px;border-radius:20px;
  background:var(--surface);border:1px solid var(--stroke);
  transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
}
.nav-card:hover{transform:translateY(-3px);border-color:rgba(79,227,193,.45);background:rgba(79,227,193,.07);box-shadow:var(--shadow)}
.nav-card:active{transform:translateY(-1px)}
.nav-card .label{display:inline-flex;align-items:center;gap:9px;font-size:12.5px;letter-spacing:1.2px;color:var(--brand);font-weight:700;margin-bottom:12px}
.nav-card strong{display:block;font-size:17px;font-weight:800;color:#fff;margin-bottom:8px}
.nav-card p{font-size:14px;color:var(--muted);line-height:1.8}

/* ---------- cta strip ---------- */
.cta-strip{
  position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  padding:38px 42px;border-radius:var(--radius);
  background:linear-gradient(120deg,rgba(79,227,193,.14),rgba(141,123,255,.12)),var(--surface);
  border:1px solid var(--stroke-strong);box-shadow:var(--shadow);
}
.cta-strip::before{
  content:"";position:absolute;inset:0;z-index:0;opacity:.5;
  background-image:linear-gradient(rgba(120,160,210,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(120,160,210,.07) 1px,transparent 1px);
  background-size:44px 44px;
  -webkit-mask-image:radial-gradient(ellipse at 80% 50%,#000 10%,transparent 70%);
  mask-image:radial-gradient(ellipse at 80% 50%,#000 10%,transparent 70%);
}
.cta-strip > *{position:relative;z-index:1}
.cta-strip h2{font-size:clamp(1.3rem,2.4vw,1.8rem);font-weight:800;line-height:1.4;margin-bottom:10px;max-width:640px}
.cta-strip p{color:var(--muted);font-size:14.5px;max-width:620px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:48px;align-items:start}
.faq-head h2{font-size:clamp(1.45rem,2.6vw,2.05rem);font-weight:800;line-height:1.35;margin-bottom:14px}
.faq-head p{color:var(--muted);font-size:14.5px;line-height:1.85}
.faq-list{display:grid;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--stroke);border-radius:16px;
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:var(--stroke-strong)}
.faq-item[open]{border-color:rgba(79,227,193,.42);background:rgba(79,227,193,.05)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:15px;font-weight:600;color:#fff;min-height:56px;
  transition:color .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:20px;line-height:1;color:var(--brand);transition:transform .22s ease}
.faq-item[open] summary::after{content:"−"}
.faq-item summary:hover{color:var(--brand)}
.faq-body{padding:0 22px 20px;font-size:14.5px;color:var(--muted);line-height:1.85}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-1);border-top:1px solid var(--stroke);padding:58px 0 24px;color:var(--muted)}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.15fr;gap:32px}
.footer-col h4{color:#fff;font-size:14.5px;font-weight:800;margin-bottom:16px;letter-spacing:.2px}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col ul a{font-size:13.5px;color:var(--muted);transition:color .18s ease,padding-left .18s ease}
.footer-col ul a:hover{color:var(--brand)}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text strong{color:#fff}
.footer-brand .brand-text small{color:#7C8DA6}
.footer-brand p{font-size:13.5px;line-height:1.85;color:var(--muted);margin-top:16px;max-width:340px}
.footer-qr .qr-box{margin:0 0 12px}
.footer-qr small{font-size:12.5px;color:#7C8DA6;line-height:1.7;display:block}
.footer-bottom{
  margin-top:42px;padding-top:22px;border-top:1px solid var(--stroke);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:#7C8DA6;
}
.footer-bottom a{color:#8FA3BC;transition:color .18s ease}
.footer-bottom a:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .article-aside{position:static;grid-template-columns:repeat(2,minmax(0,1fr));display:grid}
  .toc-list{max-height:none}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .faq-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:30px}
  .footer-brand{grid-column:1/-1}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;padding:12px;border-bottom:1px solid var(--nav-border);
    border-radius:0 0 16px 16px;box-shadow:0 20px 40px rgba(10,20,40,.14);
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:12px 14px;font-size:15px;border-radius:12px}
  .nav-search{display:none}
  .nav-toggle{display:grid;place-items:center}
}
@media (max-width:768px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .article-hero{padding:34px 0 36px}
  .article-panel{padding:26px 22px}
  .article-body{font-size:16px}
  .article-main{padding:36px 0 60px}
  .article-aside{grid-template-columns:minmax(0,1fr)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .nav-cards{grid-template-columns:minmax(0,1fr)}
  .cta-strip{padding:28px 24px;gap:22px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
  .article-cover{aspect-ratio:16/9;margin-top:22px}
  .brand-text strong{font-size:15px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .brand-text small{display:none}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .hero-foot{flex-direction:column;align-items:flex-start}
  .article-title{font-size:1.6rem}
  .btn{padding:13px 22px;font-size:14.5px}
  .nav-right{gap:8px}
}