/* roulang page: index */
:root{
  --c-bg:#0d0812;
  --c-bg-2:#171022;
  --c-surface:#1e1530;
  --c-surface-2:#261a3d;
  --c-primary:#ff2e6f;
  --c-primary-2:#ff6a3d;
  --c-accent:#8b5cf6;
  --c-text:#f5eef8;
  --c-muted:#a89cc0;
  --c-border:rgba(255,255,255,.09);
  --c-line:rgba(255,255,255,.14);
  --radius-s:10px;
  --radius:16px;
  --radius-l:26px;
  --shadow-s:0 6px 20px rgba(0,0,0,.28);
  --shadow:0 20px 50px rgba(255,46,111,.18);
  --shadow-lg:0 30px 80px rgba(139,92,246,.25);
  --gap:24px;
  --maxw:1200px;
  --grad:linear-gradient(135deg,#ff2e6f 0%,#ff6a3d 55%,#8b5cf6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,46,111,.18),rgba(139,92,246,.18));
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--c-bg);color:var(--c-text);font-family:"PingFang SC","Microsoft YaHei","HarmonyOS Sans",system-ui,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border-radius:var(--radius-s)}
a{color:inherit;text-decoration:none;transition:.25s}
a:hover{color:var(--c-primary)}
button,input,textarea{font-family:inherit}
ul{list-style:none}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(13,8,18,.85);backdrop-filter:blur(14px);border-bottom:1px solid var(--c-border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:.5px}
.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--grad);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:var(--shadow-s)}
.brand-name{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-list{display:flex;gap:6px;align-items:center}
.nav-list a{padding:10px 16px;border-radius:999px;font-size:15px;color:var(--c-muted);font-weight:500}
.nav-list a.active,.nav-list a:hover{color:#fff;background:rgba(255,46,111,.14)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;background:var(--grad);color:#fff !important;font-weight:600;box-shadow:var(--shadow-s)}
.nav-cta:hover{transform:translateY(-1px);color:#fff !important}
.nav-toggle{display:none;background:none;border:1px solid var(--c-border);color:#fff;width:42px;height:42px;border-radius:12px;cursor:pointer}

/* hero */
.hero{position:relative;padding:80px 0 60px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(13,8,18,.55),rgba(13,8,18,.9)),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;z-index:-2}
.hero::after{content:"";position:absolute;inset:auto -20% -40% -20%;height:60%;background:radial-gradient(60% 60% at 50% 50%,rgba(255,46,111,.35),transparent 70%);z-index:-1}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.08);border:1px solid var(--c-border);font-size:13px;color:#ffd7e5;letter-spacing:.5px}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 12px var(--c-primary)}
.hero h1{font-size:clamp(34px,4.6vw,58px);line-height:1.15;margin:22px 0 18px;font-weight:800;letter-spacing:.5px}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:17px;color:var(--c-muted);max-width:560px;margin-bottom:32px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;border-radius:14px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:.25s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border:1px solid var(--c-line)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;padding-top:26px;border-top:1px solid var(--c-border)}
.hero-meta .m{display:flex;flex-direction:column}
.hero-meta strong{font-size:26px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-meta span{font-size:13px;color:var(--c-muted)}
.hero-visual{position:relative}
.phone-card{position:relative;border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--c-line)}
.phone-card img{width:100%;border-radius:0}
.floating-tag{position:absolute;background:rgba(30,21,48,.85);backdrop-filter:blur(10px);border:1px solid var(--c-border);border-radius:14px;padding:12px 16px;display:flex;align-items:center;gap:10px;font-size:13px;box-shadow:var(--shadow-s)}
.floating-tag .dot{width:10px;height:10px;border-radius:50%;background:#22e6a4;box-shadow:0 0 10px #22e6a4}
.tag-1{top:24px;left:-18px}
.tag-2{bottom:30px;right:-20px}

/* section base */
.section{padding:90px 0;position:relative}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head .kicker{color:var(--c-primary);font-size:14px;letter-spacing:2px;text-transform:uppercase;font-weight:700}
.section-head h2{font-size:clamp(28px,3.3vw,42px);margin:12px 0 14px;font-weight:800}
.section-head p{color:var(--c-muted);font-size:16px}

/* features */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap)}
.feature-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:32px;transition:.3s;position:relative;overflow:hidden}
.feature-card::before{content:"";position:absolute;inset:0;background:var(--grad-soft);opacity:0;transition:.3s}
.feature-card:hover{transform:translateY(-6px);border-color:rgba(255,46,111,.4)}
.feature-card:hover::before{opacity:1}
.feature-card>*{position:relative}
.feature-icon{width:56px;height:56px;border-radius:16px;background:var(--grad);display:grid;place-items:center;font-size:24px;margin-bottom:20px;box-shadow:var(--shadow-s)}
.feature-card h3{font-size:20px;margin-bottom:10px}
.feature-card p{color:var(--c-muted);font-size:15px}

/* categories */
.cat-section{background:linear-gradient(180deg,transparent,rgba(139,92,246,.06),transparent)}
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:3/4;cursor:pointer;transition:.35s}
.cat-card img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:.5s}
.cat-card:hover img{transform:scale(1.08)}
.cat-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 30%,rgba(13,8,18,.9))}
.cat-info{position:absolute;left:20px;right:20px;bottom:20px;z-index:2}
.cat-info .badge{display:inline-block;font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(255,46,111,.85);color:#fff;margin-bottom:10px}
.cat-info h3{font-size:20px;margin-bottom:6px}
.cat-info p{font-size:13px;color:#e5d9f2;opacity:.9}
.cat-card:first-child{grid-column:span 2;grid-row:span 2;aspect-ratio:auto}

/* showcase */
.show{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.show-media{border-radius:var(--radius-l);overflow:hidden;box-shadow:var(--shadow-lg);border:1px solid var(--c-line)}
.show-media img{width:100%;border-radius:0}
.show-list{display:flex;flex-direction:column;gap:22px}
.show-item{display:flex;gap:18px;padding:20px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);transition:.3s}
.show-item:hover{border-color:rgba(139,92,246,.5);transform:translateX(6px)}
.show-num{flex-shrink:0;width:44px;height:44px;border-radius:12px;background:var(--grad-soft);border:1px solid rgba(255,46,111,.4);display:grid;place-items:center;font-weight:800;color:#ffb6cd}
.show-item h4{font-size:17px;margin-bottom:6px}
.show-item p{color:var(--c-muted);font-size:14px}

/* stats */
.stats{background:var(--c-surface);border-radius:var(--radius-l);padding:50px;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;border:1px solid var(--c-border);position:relative;overflow:hidden}
.stats::before{content:"";position:absolute;top:-50%;right:-10%;width:400px;height:400px;background:radial-gradient(circle,rgba(255,46,111,.2),transparent 70%)}
.stat{text-align:center;position:relative}
.stat b{display:block;font-size:44px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800;line-height:1.1}
.stat span{color:var(--c-muted);font-size:14px;margin-top:6px;display:block}

/* posts */
.post-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.post-card{display:flex;gap:20px;background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);padding:20px;transition:.3s}
.post-card:hover{border-color:rgba(255,106,61,.5);transform:translateY(-4px);box-shadow:var(--shadow)}
.post-thumb{flex-shrink:0;width:120px;height:120px;border-radius:12px;background:var(--grad-soft);border:1px solid var(--c-border);display:grid;place-items:center;font-size:32px}
.post-body{flex:1;min-width:0}
.post-meta{display:flex;gap:10px;font-size:12px;color:var(--c-muted);margin-bottom:10px}
.post-meta .tag{padding:3px 10px;border-radius:999px;background:rgba(255,46,111,.15);color:#ffb6cd}
.post-body h3{font-size:17px;margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-body h3 a:hover{color:var(--c-primary)}
.post-body p{font-size:14px;color:var(--c-muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-state{text-align:center;padding:60px;color:var(--c-muted);background:var(--c-surface);border-radius:var(--radius);border:1px dashed var(--c-border);grid-column:1/-1}

/* faq */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-item{background:var(--c-surface);border:1px solid var(--c-border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:.25s}
.faq-item:hover{border-color:rgba(139,92,246,.4)}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:22px 26px;cursor:pointer;font-weight:600;font-size:16px}
.faq-q::after{content:"+";font-size:24px;color:var(--c-primary);transition:.3s;font-weight:400}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;padding:0 26px;color:var(--c-muted);font-size:15px;transition:.3s}
.faq-item.open .faq-a{max-height:400px;padding:0 26px 22px}

/* cta */
.cta{position:relative;border-radius:var(--radius-l);overflow:hidden;padding:70px 60px;text-align:center;background:var(--grad);color:#fff;box-shadow:var(--shadow-lg)}
.cta::before{content:"";position:absolute;inset:0;background:url('/assets/images/backpic/back-3.webp') center/cover;opacity:.15;mix-blend-mode:overlay}
.cta>*{position:relative}
.cta h2{font-size:clamp(28px,3.3vw,40px);font-weight:800;margin-bottom:14px}
.cta p{font-size:17px;opacity:.92;max-width:640px;margin:0 auto 30px}
.cta .btn-ghost{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.3)}
.cta .btn-ghost:hover{background:rgba(255,255,255,.25)}
.cta .btn-primary{background:#fff;color:#ff2e6f}
.cta .btn-primary:hover{color:#ff2e6f}

/* footer */
.site-footer{background:#0a060f;border-top:1px solid var(--c-border);padding:70px 0 30px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:50px}
.foot-brand p{color:var(--c-muted);margin-top:16px;font-size:14px;max-width:320px}
.foot-col h5{font-size:15px;margin-bottom:18px;color:#fff}
.foot-col ul li{margin-bottom:10px;font-size:14px;color:var(--c-muted)}
.foot-col ul li a:hover{color:var(--c-primary)}
.foot-bottom{padding-top:26px;border-top:1px solid var(--c-border);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;color:var(--c-muted);font-size:13px}

/* responsive */
@media(max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:50px}
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .cat-grid{grid-template-columns:repeat(2,1fr)}
  .cat-card:first-child{grid-column:span 2;grid-row:auto;aspect-ratio:3/4}
  .stats{grid-template-columns:repeat(2,1fr);padding:36px}
  .show{grid-template-columns:1fr;gap:36px}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .section{padding:64px 0}
  .hero{padding:56px 0 40px}
  .nav-list{display:none;position:absolute;top:72px;left:0;right:0;background:rgba(13,8,18,.98);flex-direction:column;padding:20px;gap:6px;border-bottom:1px solid var(--c-border)}
  .nav-list.open{display:flex}
  .nav-list a{width:100%;text-align:center}
  .nav-toggle{display:block}
  .cta{padding:50px 24px}
  .post-card{flex-direction:column}
  .post-thumb{width:100%;height:160px}
}
@media(max-width:520px){
  .feature-grid,.cat-grid,.post-grid,.foot-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr;gap:20px;padding:26px}
  .stat b{font-size:32px}
  .hero-meta{gap:18px}
  .cta h2{font-size:26px}
}

/* roulang page: category2 */
:root{
  --c-bg:#0b0713;
  --c-bg-2:#140a1f;
  --c-surface:#1a0f28;
  --c-surface-2:#241536;
  --c-border:rgba(255,255,255,.08);
  --c-text:#f5eefb;
  --c-muted:#a99cc0;
  --c-primary:#ff3d8b;
  --c-primary-2:#ff6a4d;
  --c-accent:#7c5cff;
  --c-accent-2:#22d3ee;
  --c-success:#34d399;
  --grad-hero:linear-gradient(135deg,#ff3d8b 0%,#7c5cff 55%,#22d3ee 100%);
  --grad-card:linear-gradient(160deg,rgba(255,61,139,.14),rgba(124,92,255,.10));
  --radius-sm:10px;
  --radius:16px;
  --radius-lg:24px;
  --shadow-sm:0 4px 14px rgba(0,0,0,.25);
  --shadow:0 10px 30px rgba(0,0,0,.35);
  --shadow-glow:0 12px 40px rgba(255,61,139,.25);
  --sp-1:8px;--sp-2:12px;--sp-3:16px;--sp-4:24px;--sp-5:32px;--sp-6:48px;--sp-7:72px;--sp-8:96px;
  --container:1200px;
  --t:.25s ease;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:inherit;text-decoration:none;transition:color var(--t)}
a:hover{color:var(--c-primary)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{list-style:none;margin:0;padding:0}
h1,h2,h3,h4,h5{margin:0 0 var(--sp-3);line-height:1.25;font-weight:700;letter-spacing:.01em}
h1{font-size:clamp(2rem,4.5vw,3.4rem)}
h2{font-size:clamp(1.6rem,3vw,2.4rem)}
h3{font-size:1.25rem}
p{margin:0 0 var(--sp-3)}
.container{max-width:var(--container);margin:0 auto;padding:0 var(--sp-4)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,7,19,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-border);
}
.site-header .nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:var(--sp-3) var(--sp-4);gap:var(--sp-4);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-hero);
  display:grid;place-items:center;color:#fff;font-size:1.1rem;
  box-shadow:var(--shadow-glow);
}
.brand-name{background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-list{display:flex;align-items:center;gap:var(--sp-4)}
.nav-list a{
  font-size:.95rem;color:var(--c-muted);position:relative;padding:6px 2px;
}
.nav-list a:hover{color:var(--c-text)}
.nav-list a.active{color:var(--c-text)}
.nav-list a.active::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:2px;
  background:var(--grad-hero);border-radius:2px;
}
.nav-cta{
  padding:10px 20px !important;border-radius:999px;
  background:var(--grad-hero);color:#fff !important;font-weight:600;
  box-shadow:var(--shadow-glow);
}
.nav-cta:hover{transform:translateY(-1px)}
.nav-cta::after{display:none !important}
.nav-toggle{display:none;font-size:1.4rem;color:var(--c-text)}

/* Hero */
.hero{
  position:relative;overflow:hidden;
  padding:var(--sp-8) 0 var(--sp-7);
  background:
    linear-gradient(180deg,rgba(11,7,19,.55),rgba(11,7,19,.92)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 400px at 20% 20%,rgba(255,61,139,.28),transparent 60%),
             radial-gradient(500px 380px at 80% 70%,rgba(124,92,255,.28),transparent 60%);
  pointer-events:none;
}
.hero-wrap{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:var(--sp-6);align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.08);border:1px solid var(--c-border);
  font-size:.85rem;color:var(--c-muted);margin-bottom:var(--sp-3);
}
.hero-badge .dot{width:8px;height:8px;border-radius:50%;background:var(--c-success);box-shadow:0 0 0 4px rgba(52,211,153,.2)}
.hero h1 span{background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{font-size:1.1rem;color:var(--c-muted);max-width:560px;margin-bottom:var(--sp-4)}
.hero-cta{display:flex;flex-wrap:wrap;gap:var(--sp-3);margin-bottom:var(--sp-5)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;border-radius:12px;font-weight:600;font-size:.98rem;
  transition:transform var(--t),box-shadow var(--t),background var(--t);
}
.btn-primary{background:var(--grad-hero);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);border:1px solid var(--c-border);color:var(--c-text)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:var(--c-text)}
.hero-stats{display:flex;gap:var(--sp-5);flex-wrap:wrap}
.hero-stats .st{display:flex;flex-direction:column}
.hero-stats .num{font-size:1.6rem;font-weight:800;background:var(--grad-hero);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .lb{font-size:.85rem;color:var(--c-muted)}

/* Hero side - map/user cards */
.match-panel{
  position:relative;padding:var(--sp-4);
  background:var(--grad-card);
  border:1px solid var(--c-border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);
  backdrop-filter:blur(8px);
}
.match-panel::before{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:radial-gradient(400px 260px at 50% 0,rgba(255,61,139,.25),transparent 60%);
  pointer-events:none;
}
.match-panel h4{font-size:.9rem;color:var(--c-muted);font-weight:500;margin-bottom:var(--sp-3)}
.match-panel h4 strong{color:var(--c-text)}
.user-list{display:flex;flex-direction:column;gap:12px;position:relative}
.user-item{
  display:flex;align-items:center;gap:12px;
  padding:12px;border-radius:14px;
  background:rgba(255,255,255,.04);border:1px solid var(--c-border);
  transition:transform var(--t),background var(--t);
}
.user-item:hover{transform:translateX(4px);background:rgba(255,255,255,.08)}
.avatar{
  width:52px;height:52px;border-radius:50%;
  background:var(--grad-hero);
  display:grid;place-items:center;color:#fff;font-weight:700;
  position:relative;flex-shrink:0;
}
.avatar.on::after{
  content:"";position:absolute;right:2px;bottom:2px;
  width:12px;height:12px;border-radius:50%;background:var(--c-success);
  border:2px solid var(--c-surface);
}
.u-info{flex:1;min-width:0}
.u-name{font-weight:600;font-size:.98rem;display:flex;align-items:center;gap:6px}
.u-meta{font-size:.82rem;color:var(--c-muted)}
.u-btn{
  padding:8px 14px;border-radius:999px;font-size:.82rem;font-weight:600;
  background:rgba(255,61,139,.15);color:#ff8fb8;border:1px solid rgba(255,61,139,.3);
  transition:all var(--t);
}
.u-btn:hover{background:var(--c-primary);color:#fff}
.tag{
  display:inline-flex;align-items:center;padding:2px 8px;border-radius:6px;
  font-size:.72rem;background:rgba(124,92,255,.18);color:#c5b6ff;
}

/* Section base */
section{padding:var(--sp-8) 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto var(--sp-6)}
.sec-tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(255,61,139,.12);color:#ff8fb8;
  font-size:.82rem;font-weight:500;margin-bottom:var(--sp-2);
  border:1px solid rgba(255,61,139,.25);
}
.sec-head p{color:var(--c-muted);font-size:1.05rem}

/* Features grid */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp-4)}
.feature-card{
  padding:var(--sp-4);
  background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--radius);
  transition:transform var(--t),border-color var(--t),box-shadow var(--t);
  position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-hero);opacity:0;transition:opacity var(--t);
}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(255,61,139,.3);box-shadow:var(--shadow)}
.feature-card:hover::before{opacity:1}
.f-icon{
  width:52px;height:52px;border-radius:14px;
  background:var(--grad-card);border:1px solid var(--c-border);
  display:grid;place-items:center;font-size:1.4rem;margin-bottom:var(--sp-3);
}
.feature-card h3{font-size:1.15rem}
.feature-card p{color:var(--c-muted);font-size:.95rem;margin:0}

/* Scenes */
.scene-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-3)}
.scene{
  position:relative;overflow:hidden;border-radius:var(--radius);
  aspect-ratio:3/4;
  border:1px solid var(--c-border);
  transition:transform var(--t);
}
.scene:hover{transform:translateY(-4px)}
.scene img{width:100%;height:100%;object-fit:cover;border-radius:0}
.scene::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(11,7,19,.92) 100%);
}
.scene-info{
  position:absolute;left:0;right:0;bottom:0;padding:var(--sp-3);z-index:2;
}
.scene-info h4{font-size:1.05rem;margin-bottom:4px}
.scene-info p{font-size:.85rem;color:var(--c-muted);margin:0}
.scene-badge{
  position:absolute;top:12px;left:12px;z-index:2;
  padding:4px 10px;border-radius:999px;
  background:rgba(11,7,19,.6);backdrop-filter:blur(6px);
  border:1px solid var(--c-border);
  font-size:.75rem;color:var(--c-text);
}

/* Steps */
.step-wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp-4);position:relative}
.step{
  padding:var(--sp-4);background:var(--c-surface);
  border:1px solid var(--c-border);border-radius:var(--radius);
  position:relative;
}
.step-n{
  width:44px;height:44px;border-radius:12px;
  background:var(--grad-hero);color:#fff;font-weight:800;
  display:grid;place-items:center;font-size:1.2rem;
  margin-bottom:var(--sp-3);box-shadow:var(--shadow-glow);
}
.step h3{font-size:1.1rem}
.step p{color:var(--c-muted);font-size:.92rem;margin:0}

/* Safety block */
.safety{
  background:linear-gradient(180deg,var(--c-bg) 0,var(--c-bg-2) 100%);
}
.safety-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:var(--sp-6);align-items:center}
.safety-list{display:flex;flex-direction:column;gap:var(--sp-3)}
.safety-item{
  display:flex;gap:var(--sp-3);
  padding:var(--sp-3);border-radius:var(--radius);
  background:var(--c-surface);border:1px solid var(--c-border);
}
.safety-item .ico{
  flex-shrink:0;width:44px;height:44px;border-radius:12px;
  background:rgba(52,211,153,.15);color:var(--c-success);
  display:grid;place-items:center;font-size:1.2rem;font-weight:700;
  border:1px solid rgba(52,211,153,.25);
}
.safety-item h4{font-size:1rem;margin-bottom:4px}
.safety-item p{font-size:.9rem;color:var(--c-muted);margin:0}
.safety-cover{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow)}
.safety-cover img{width:100%;height:100%;object-fit:cover;border-radius:0}
.safety-cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(11,7,19,.6))}

/* Compare table */
.compare{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--c-border)}
.compare table{width:100%;border-collapse:collapse;min-width:640px}
.compare th,.compare td{padding:16px 20px;text-align:left;border-bottom:1px solid var(--c-border)}
.compare th{background:var(--c-surface-2);font-weight:600;font-size:.95rem}
.compare tr:last-child td{border-bottom:none}
.compare td:first-child{font-weight:600;color:var(--c-text)}
.compare td{color:var(--c-muted);font-size:.94rem}
.check{color:var(--c-success);font-weight:700}
.cross{color:#ef4444;font-weight:700}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--radius);overflow:hidden;
}
.faq-item summary{
  padding:var(--sp-3) var(--sp-4);cursor:pointer;
  font-weight:600;font-size:1.02rem;
  display:flex;justify-content:space-between;align-items:center;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:1.4rem;color:var(--c-primary);transition:transform var(--t)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{border-bottom:1px solid var(--c-border)}
.faq-body{padding:var(--sp-3) var(--sp-4);color:var(--c-muted);font-size:.95rem}

/* CTA */
.cta-block{
  position:relative;overflow:hidden;
  padding:var(--sp-7) var(--sp-5);
  background:
    linear-gradient(135deg,rgba(11,7,19,.7),rgba(11,7,19,.9)),
    url('/assets/images/backpic/back-3.webp') center/cover;
  border-radius:var(--radius-lg);
  text-align:center;
  border:1px solid var(--c-border);
}
.cta-block::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(500px 300px at 50% 0,rgba(255,61,139,.4),transparent 60%);
}
.cta-block > *{position:relative}
.cta-block h2{margin-bottom:var(--sp-3)}
.cta-block p{color:var(--c-muted);max-width:620px;margin:0 auto var(--sp-4)}
.cta-row{display:flex;gap:var(--sp-3);justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-border);
  padding:var(--sp-6) 0 var(--sp-4);
  margin-top:var(--sp-7);
}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:var(--sp-5);
  padding-bottom:var(--sp-5);border-bottom:1px solid var(--c-border);
}
.foot-brand p{color:var(--c-muted);font-size:.9rem;margin-top:var(--sp-2)}
.foot-col h5{font-size:.95rem;margin-bottom:var(--sp-3);color:var(--c-text)}
.foot-col ul{display:flex;flex-direction:column;gap:8px}
.foot-col li,.foot-col a{color:var(--c-muted);font-size:.9rem}
.foot-col a:hover{color:var(--c-primary)}
.foot-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:var(--sp-2);
  padding-top:var(--sp-4);color:var(--c-muted);font-size:.85rem;
}

/* Responsive */
@media (max-width:1024px){
  .hero-wrap{grid-template-columns:1fr;gap:var(--sp-5)}
  .feature-grid,.step-wrap{grid-template-columns:repeat(2,1fr)}
  .scene-wrap{grid-template-columns:repeat(2,1fr)}
  .safety-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  section{padding:var(--sp-6) 0}
  .hero{padding:var(--sp-6) 0 var(--sp-5)}
  .nav-toggle{display:block}
  .nav-list{
    display:none;position:absolute;left:0;right:0;top:100%;
    flex-direction:column;padding:var(--sp-3);gap:var(--sp-2);
    background:var(--c-bg-2);border-bottom:1px solid var(--c-border);
  }
  .nav-list.open{display:flex}
  .nav-list a{padding:10px 4px;width:100%}
  .nav-list a.active::after{display:none}
}
@media (max-width:520px){
  .feature-grid,.step-wrap,.scene-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{gap:var(--sp-4)}
  .hero-stats .num{font-size:1.3rem}
  .cta-block{padding:var(--sp-5) var(--sp-3)}
  h1{font-size:1.9rem}
  h2{font-size:1.5rem}
}

/* roulang page: article */
:root{
  --c-bg:#0b0710;
  --c-surface:#141021;
  --c-surface-2:#1c1730;
  --c-line:#2a2340;
  --c-primary:#ff3d7f;
  --c-primary-2:#ff7a45;
  --c-accent:#7c5cff;
  --c-text:#f4eef8;
  --c-mute:#b3a9c7;
  --c-soft:#8a7fa3;
  --radius-s:8px;
  --radius:14px;
  --radius-l:22px;
  --shadow-s:0 4px 14px rgba(0,0,0,.25);
  --shadow:0 18px 42px rgba(255,61,127,.18);
  --shadow-card:0 12px 30px rgba(10,4,20,.45);
  --gap:24px;
  --maxw:1200px;
  --ease:cubic-bezier(.4,.2,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-s)}
a{color:inherit;text-decoration:none;transition:color .25s var(--ease)}
a:hover{color:var(--c-primary)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
ul{list-style:none;padding:0;margin:0}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(11,7,16,.85);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--c-line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:70px;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  color:#fff;font-size:20px;box-shadow:0 6px 16px rgba(255,61,127,.4);
}
.brand-name{font-size:19px;letter-spacing:.5px}
.nav-list{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-list a{
  padding:9px 14px;border-radius:10px;font-size:14.5px;color:var(--c-mute);
  transition:all .25s var(--ease);
}
.nav-list a:hover{background:var(--c-surface-2);color:var(--c-text)}
.nav-list a.active{color:#fff;background:var(--c-surface-2)}
.nav-cta{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2))!important;
  color:#fff!important;font-weight:700;padding:10px 20px!important;
  box-shadow:0 8px 20px rgba(255,61,127,.4);
}
.nav-cta:hover{transform:translateY(-1px);filter:brightness(1.08)}
.nav-toggle{display:none;font-size:24px;padding:6px 10px;border-radius:8px;background:var(--c-surface-2)}

/* Article Hero */
.article-hero{
  position:relative;
  padding:70px 0 50px;
  background:
    linear-gradient(180deg,rgba(11,7,16,.7) 0%,rgba(11,7,16,.95) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom:1px solid var(--c-line);
}
.crumbs{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  color:var(--c-soft);font-size:13.5px;margin-bottom:22px;
}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:var(--c-line)}
.crumbs .now{color:var(--c-text)}
.article-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:99px;
  background:rgba(255,61,127,.14);color:var(--c-primary);
  font-size:13px;font-weight:600;margin-bottom:18px;
  border:1px solid rgba(255,61,127,.28);
}
.article-tag::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);
  box-shadow:0 0 0 4px rgba(255,61,127,.2);
}
.article-title{
  font-size:clamp(28px,4.2vw,46px);
  line-height:1.25;font-weight:800;
  margin:0 0 22px;letter-spacing:.3px;
  background:linear-gradient(120deg,#fff 30%,#ffd0e0 100%);
  -webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;
}
.article-meta{
  display:flex;flex-wrap:wrap;gap:22px;align-items:center;
  color:var(--c-mute);font-size:14px;
}
.article-meta .m-item{display:flex;align-items:center;gap:8px}
.article-meta .m-icon{
  width:26px;height:26px;border-radius:8px;
  background:var(--c-surface-2);display:grid;place-items:center;
  color:var(--c-primary);font-size:13px;
}

/* Main layout */
.article-main{padding:60px 0 40px}
.layout{
  display:grid;grid-template-columns:minmax(0,1fr) 320px;
  gap:44px;align-items:start;
}
.article-body{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-l);
  padding:44px;
  box-shadow:var(--shadow-card);
}
.article-body h1,.article-body h2,.article-body h3,.article-body h4{
  color:#fff;line-height:1.35;font-weight:700;
  margin:38px 0 16px;
}
.article-body h2{
  font-size:24px;padding-left:14px;
  border-left:4px solid var(--c-primary);
}
.article-body h3{font-size:19px;color:var(--c-primary-2)}
.article-body p{margin:0 0 18px;color:#e6dff0;font-size:15.5px}
.article-body ul,.article-body ol{
  margin:0 0 20px;padding-left:22px;color:#e6dff0;
}
.article-body ul li,.article-body ol li{
  margin-bottom:10px;list-style:disc;
}
.article-body ol li{list-style:decimal}
.article-body a{color:var(--c-primary);border-bottom:1px dashed rgba(255,61,127,.4)}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--c-surface-2);
  border-left:4px solid var(--c-accent);
  border-radius:0 var(--radius) var(--radius) 0;
  color:var(--c-mute);font-style:normal;
}
.article-body img{
  border-radius:var(--radius);margin:22px 0;
  box-shadow:var(--shadow-card);
}
.article-body code{
  background:var(--c-surface-2);padding:2px 8px;
  border-radius:6px;font-size:14px;color:var(--c-primary-2);
}
.article-body table{width:100%;border-collapse:collapse;margin:22px 0}
.article-body th,.article-body td{
  border:1px solid var(--c-line);padding:10px 14px;text-align:left;
}
.article-body th{background:var(--c-surface-2);color:#fff}

/* Not found */
.no-article{
  text-align:center;padding:80px 30px;
}
.no-article .nf-icon{
  font-size:60px;margin-bottom:20px;opacity:.6;
}
.no-article h2{font-size:26px;margin:0 0 12px;color:#fff}
.no-article p{color:var(--c-mute);margin:0 0 26px}

/* Share/tag row */
.article-foot{
  margin-top:34px;padding-top:26px;
  border-top:1px dashed var(--c-line);
  display:flex;flex-wrap:wrap;gap:14px;
  justify-content:space-between;align-items:center;
}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag-row .tg{
  padding:6px 14px;border-radius:99px;
  background:var(--c-surface-2);color:var(--c-mute);
  font-size:13px;border:1px solid var(--c-line);
}
.tag-row .tg:hover{color:var(--c-primary);border-color:var(--c-primary)}
.share-row{display:flex;gap:10px;align-items:center;color:var(--c-soft);font-size:13.5px}
.share-btn{
  width:34px;height:34px;border-radius:10px;
  background:var(--c-surface-2);display:grid;place-items:center;
  color:var(--c-mute);transition:all .25s var(--ease);
  border:1px solid var(--c-line);font-size:14px;
}
.share-btn:hover{background:var(--c-primary);color:#fff;transform:translateY(-2px)}

/* Sidebar */
.sidebar{position:sticky;top:90px;display:flex;flex-direction:column;gap:24px}
.side-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-l);
  padding:26px;
}
.side-title{
  font-size:17px;font-weight:700;color:#fff;
  margin:0 0 18px;display:flex;align-items:center;gap:10px;
}
.side-title::before{
  content:"";width:4px;height:16px;border-radius:2px;
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-2));
}
.cta-side{
  background:linear-gradient(135deg,#3a1a3d,#1b1030);
  position:relative;overflow:hidden;
}
.cta-side::before{
  content:"";position:absolute;right:-40px;top:-40px;
  width:140px;height:140px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,61,127,.35),transparent 70%);
}
.cta-side h4{margin:0 0 10px;font-size:19px;color:#fff;position:relative}
.cta-side p{margin:0 0 18px;font-size:13.5px;color:var(--c-mute);position:relative}
.cta-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:99px;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  color:#fff;font-weight:700;font-size:14px;
  box-shadow:0 10px 24px rgba(255,61,127,.35);
  transition:transform .25s var(--ease);position:relative;
}
.cta-btn:hover{transform:translateY(-2px);color:#fff}

.related-list li{margin-bottom:16px}
.related-list li:last-child{margin-bottom:0}
.related-list a{
  display:flex;gap:12px;align-items:flex-start;
  padding:10px;border-radius:12px;transition:background .25s var(--ease);
}
.related-list a:hover{background:var(--c-surface-2)}
.related-list .r-cover{
  width:72px;height:56px;border-radius:10px;overflow:hidden;flex-shrink:0;
}
.related-list .r-cover img{width:100%;height:100%;object-fit:cover}
.related-list .r-meta h5{
  margin:0 0 6px;font-size:14px;line-height:1.45;color:var(--c-text);font-weight:600;
}
.related-list .r-meta span{font-size:12px;color:var(--c-soft)}

.channel-list li a{
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 14px;border-radius:10px;
  background:var(--c-surface-2);color:var(--c-mute);
  font-size:14px;margin-bottom:10px;
  border:1px solid transparent;
  transition:all .25s var(--ease);
}
.channel-list li a:hover{
  border-color:var(--c-primary);color:#fff;transform:translateX(3px);
}
.channel-list .num{
  font-size:12px;padding:2px 8px;border-radius:6px;
  background:rgba(255,61,127,.15);color:var(--c-primary);
}

/* Reading progress */
.progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--c-primary),var(--c-primary-2),var(--c-accent));
  z-index:100;transition:width .2s ease;
}

/* Notice band */
.notice-band{
  background:linear-gradient(90deg,rgba(124,92,255,.15),rgba(255,61,127,.15));
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
  padding:16px 0;
}
.notice-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;
  gap:14px;font-size:13.5px;color:var(--c-mute);
}
.notice-inner strong{color:var(--c-primary-2);margin-right:6px}

/* Bottom recommend */
.recommend{padding:60px 0 40px;background:var(--c-bg)}
.rec-head{
  display:flex;justify-content:space-between;align-items:flex-end;
  margin-bottom:32px;flex-wrap:wrap;gap:16px;
}
.rec-head h2{
  margin:0;font-size:28px;font-weight:800;color:#fff;
}
.rec-head p{margin:6px 0 0;color:var(--c-soft);font-size:14px}
.rec-more{
  padding:9px 18px;border-radius:99px;
  background:var(--c-surface-2);color:var(--c-mute);font-size:13.5px;
  border:1px solid var(--c-line);
}
.rec-more:hover{color:var(--c-primary);border-color:var(--c-primary)}
.rec-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
}
.rec-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-l);
  overflow:hidden;
  transition:transform .3s var(--ease),box-shadow .3s var(--ease);
}
.rec-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.rec-card .cov{position:relative;aspect-ratio:16/10;overflow:hidden}
.rec-card .cov img{
  width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);
}
.rec-card:hover .cov img{transform:scale(1.06)}
.rec-card .cov::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(11,7,16,.7) 100%);
}
.rec-card .lb{
  position:absolute;top:12px;left:12px;
  padding:4px 10px;border-radius:6px;
  background:rgba(255,61,127,.9);color:#fff;font-size:12px;font-weight:600;
  z-index:2;
}
.rec-card .body{padding:22px}
.rec-card h3{
  margin:0 0 10px;font-size:17px;color:#fff;line-height:1.5;font-weight:700;
}
.rec-card p{margin:0 0 14px;color:var(--c-mute);font-size:13.5px;line-height:1.65}
.rec-card .meta{
  display:flex;justify-content:space-between;align-items:center;
  font-size:12.5px;color:var(--c-soft);
}
.rec-card .meta .go{color:var(--c-primary);font-weight:600}

/* Footer */
.site-footer{
  background:#080510;border-top:1px solid var(--c-line);
  padding:60px 0 24px;margin-top:20px;
}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;
  margin-bottom:36px;
}
.foot-brand p{color:var(--c-soft);font-size:13.5px;line-height:1.75;margin-top:16px}
.foot-col h5{
  color:#fff;font-size:15px;margin:0 0 18px;font-weight:700;
}
.foot-col ul li{margin-bottom:10px;color:var(--c-soft);font-size:13.5px}
.foot-col ul li a:hover{color:var(--c-primary)}
.foot-bottom{
  border-top:1px solid var(--c-line);padding-top:20px;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:12.5px;color:var(--c-soft);
}

@media (max-width:1024px){
  .layout{grid-template-columns:1fr;gap:32px}
  .sidebar{position:static;flex-direction:row;overflow-x:auto;padding-bottom:8px}
  .side-card{min-width:290px;flex-shrink:0}
  .rec-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
}
@media (max-width:768px){
  .nav-toggle{display:block}
  .nav-list{
    position:absolute;top:70px;left:0;right:0;
    flex-direction:column;background:var(--c-surface);
    padding:16px;gap:4px;border-bottom:1px solid var(--c-line);
    display:none;
  }
  .nav-list.open{display:flex}
  .nav-list a{width:100%;padding:12px 14px}
  .article-hero{padding:44px 0 34px}
  .article-body{padding:26px 20px}
  .article-body h2{font-size:20px}
  .rec-grid{grid-template-columns:1fr}
  .sidebar{flex-direction:column}
  .side-card{min-width:0}
}
@media (max-width:520px){
  .article-title{font-size:24px}
  .article-meta{gap:14px;font-size:13px}
  .foot-grid{grid-template-columns:1fr}
  .foot-bottom{flex-direction:column;text-align:center}
}

/* roulang page: category3 */
:root{
  --c-bg:#0d0714;
  --c-bg-2:#160c22;
  --c-surface:#1c1029;
  --c-surface-2:#241436;
  --c-border:rgba(255,255,255,.08);
  --c-border-strong:rgba(255,255,255,.14);
  --c-primary:#ff3e83;
  --c-primary-2:#a855f7;
  --c-accent:#22d3ee;
  --c-text:#f5eaff;
  --c-muted:#b6a4c9;
  --c-dim:#8a7aa0;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-xl:32px;
  --sh-sm:0 4px 14px rgba(0,0,0,.35);
  --sh-md:0 12px 32px rgba(0,0,0,.4);
  --sh-glow:0 0 40px rgba(255,62,131,.25);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:72px;
  --sp-7:96px;
  --grad-pink:linear-gradient(135deg,#ff3e83 0%,#a855f7 100%);
  --grad-dark:linear-gradient(180deg,#0d0714 0%,#160c22 100%);
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:.25s}
a:hover{color:var(--c-primary)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
.container{max-width:1240px;margin:0 auto;padding:0 24px}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(13,7,20,.85);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--c-border);
}
.site-header .nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 24px;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--c-text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--grad-pink);
  display:flex;align-items:center;justify-content:center;
  font-size:18px;color:#fff;box-shadow:var(--sh-glow);
}
.brand-name{letter-spacing:.5px}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{
  padding:9px 14px;border-radius:999px;font-size:14.5px;
  color:var(--c-muted);position:relative;
}
.nav-list a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.nav-list a.active{color:var(--c-text);background:rgba(255,62,131,.12)}
.nav-list a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;background:var(--grad-pink);
}
.nav-cta{
  background:var(--grad-pink)!important;color:#fff!important;
  padding:10px 22px!important;font-weight:600;
  box-shadow:var(--sh-glow);
}
.nav-cta:hover{transform:translateY(-1px)}
.nav-toggle{display:none;font-size:24px;padding:6px 10px;border-radius:8px}

/* Hero */
.hero{
  position:relative;padding:110px 0 90px;overflow:hidden;
  background:
    linear-gradient(180deg,rgba(13,7,20,.65) 0%,rgba(13,7,20,.95) 100%),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 400px at 15% 30%,rgba(255,62,131,.25),transparent 60%),
             radial-gradient(500px 400px at 85% 70%,rgba(168,85,247,.22),transparent 60%);
  pointer-events:none;
}
.hero-wrap{position:relative;display:grid;grid-template-columns:1.15fr 1fr;gap:60px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:999px;
  background:rgba(255,255,255,.06);border:1px solid var(--c-border-strong);
  font-size:13px;color:var(--c-muted);margin-bottom:22px;
}
.hero-badge span{width:8px;height:8px;border-radius:50%;background:var(--c-accent);box-shadow:0 0 10px var(--c-accent)}
.hero h1{
  font-size:52px;line-height:1.15;margin-bottom:22px;
  background:linear-gradient(120deg,#fff 0%,#ffb0d1 45%,#c4b5fd 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p.lead{font-size:17.5px;color:var(--c-muted);margin-bottom:32px;max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:36px}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:999px;font-weight:600;font-size:15px;
  transition:.28s;cursor:pointer;
}
.btn-primary{background:var(--grad-pink);color:#fff;box-shadow:var(--sh-glow)}
.btn-primary:hover{transform:translateY(-2px);color:#fff;box-shadow:0 0 50px rgba(255,62,131,.4)}
.btn-ghost{background:rgba(255,255,255,.05);color:var(--c-text);border:1px solid var(--c-border-strong)}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:var(--c-text)}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats .st strong{display:block;font-size:28px;color:#fff;font-weight:700}
.hero-stats .st span{font-size:13px;color:var(--c-dim)}

.hero-visual{position:relative}
.room-card{
  background:linear-gradient(160deg,rgba(36,20,54,.9),rgba(28,16,41,.9));
  border:1px solid var(--c-border-strong);
  border-radius:var(--r-xl);padding:26px;
  box-shadow:var(--sh-md);backdrop-filter:blur(20px);
}
.room-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px dashed var(--c-border-strong);margin-bottom:18px}
.room-head .rid{font-size:13px;color:var(--c-dim);letter-spacing:1px}
.room-head .rid b{color:var(--c-accent);font-family:'Courier New',monospace;letter-spacing:2px}
.lock-tag{display:inline-flex;align-items:center;gap:6px;font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(34,211,238,.12);color:var(--c-accent)}
.msg{display:flex;gap:10px;margin-bottom:14px;align-items:flex-end}
.msg .av{width:34px;height:34px;border-radius:50%;background:var(--grad-pink);flex-shrink:0}
.msg .bubble{
  background:rgba(255,255,255,.06);padding:10px 14px;border-radius:14px 14px 14px 4px;
  font-size:14px;color:var(--c-text);max-width:75%;
}
.msg.self{flex-direction:row-reverse}
.msg.self .av{background:linear-gradient(135deg,#22d3ee,#6366f1)}
.msg.self .bubble{background:var(--grad-pink);color:#fff;border-radius:14px 14px 4px 14px}
.burn-tag{font-size:11px;color:var(--c-dim);margin-left:44px;margin-bottom:12px;display:flex;align-items:center;gap:6px}
.burn-tag::before{content:"⏱";}
.room-foot{margin-top:14px;padding:12px 14px;background:rgba(255,255,255,.04);border-radius:14px;font-size:12.5px;color:var(--c-muted);display:flex;justify-content:space-between}
.room-foot b{color:var(--c-primary)}

/* Sections common */
section{padding:var(--sp-7) 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto var(--sp-5)}
.sec-tag{
  display:inline-block;font-size:13px;color:var(--c-primary);
  background:rgba(255,62,131,.1);padding:5px 14px;border-radius:999px;
  margin-bottom:14px;letter-spacing:1px;
}
.sec-head h2{font-size:38px;margin-bottom:16px;color:#fff}
.sec-head p{color:var(--c-muted);font-size:16px}

/* Features Grid */
.feat-section{background:var(--c-bg-2)}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat-card{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-lg);padding:32px 26px;transition:.3s;
  position:relative;overflow:hidden;
}
.feat-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-pink);transform:scaleX(0);transform-origin:left;transition:.4s;
}
.feat-card:hover{transform:translateY(-6px);border-color:var(--c-border-strong);box-shadow:var(--sh-md)}
.feat-card:hover::before{transform:scaleX(1)}
.feat-ico{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,rgba(255,62,131,.2),rgba(168,85,247,.2));
  display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px;
}
.feat-card h3{font-size:19px;margin-bottom:10px;color:#fff}
.feat-card p{color:var(--c-muted);font-size:14.5px}

/* Scene */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-item{
  position:relative;height:280px;border-radius:var(--r-lg);overflow:hidden;
  cursor:pointer;transition:.4s;
}
.scene-item img{width:100%;height:100%;object-fit:cover;transition:.6s}
.scene-item::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(13,7,20,.1) 40%,rgba(13,7,20,.95) 100%);
}
.scene-item .cap{
  position:absolute;left:20px;right:20px;bottom:20px;z-index:2;
}
.scene-item .cap h4{font-size:18px;color:#fff;margin-bottom:6px}
.scene-item .cap p{font-size:13px;color:var(--c-muted)}
.scene-item:hover{transform:translateY(-4px)}
.scene-item:hover img{transform:scale(1.08)}

/* Flow */
.flow-section{background:var(--c-bg-2)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.flow-step{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-lg);padding:28px 22px;text-align:center;position:relative;
}
.flow-num{
  width:44px;height:44px;border-radius:50%;
  background:var(--grad-pink);color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  margin:0 auto 16px;box-shadow:var(--sh-glow);
}
.flow-step h4{font-size:17px;color:#fff;margin-bottom:8px}
.flow-step p{color:var(--c-muted);font-size:14px}

/* Compare */
.compare{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-xl);padding:14px;overflow-x:auto;
}
.compare table{width:100%;border-collapse:collapse;min-width:600px}
.compare th,.compare td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--c-border)}
.compare th{color:var(--c-dim);font-weight:500;font-size:13px;letter-spacing:1px}
.compare td:first-child{color:var(--c-text);font-weight:500}
.compare td.yes{color:#4ade80}
.compare td.no{color:var(--c-dim)}
.compare tr:last-child td{border-bottom:none}

/* FAQ */
.faq-section{background:var(--c-bg-2)}
.faq-list{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-border);
  border-radius:var(--r-md);margin-bottom:14px;overflow:hidden;
  transition:.3s;
}
.faq-item:hover{border-color:var(--c-border-strong)}
.faq-q{
  padding:20px 24px;font-size:16px;font-weight:600;color:#fff;
  display:flex;justify-content:space-between;align-items:center;cursor:pointer;
}
.faq-q .plus{
  width:26px;height:26px;border-radius:50%;
  background:rgba(255,62,131,.15);color:var(--c-primary);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  flex-shrink:0;transition:.3s;
}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{padding:0 24px;max-height:0;overflow:hidden;transition:.35s;color:var(--c-muted);font-size:14.5px}
.faq-item.open .faq-a{padding:0 24px 22px;max-height:400px}

/* CTA */
.cta-section{
  position:relative;padding:var(--sp-7) 0;
  background:
    linear-gradient(120deg,rgba(255,62,131,.9) 0%,rgba(168,85,247,.9) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover;
  text-align:center;
}
.cta-section h2{font-size:40px;color:#fff;margin-bottom:16px}
.cta-section p{color:rgba(255,255,255,.85);font-size:17px;max-width:640px;margin:0 auto 32px}
.cta-section .btn{background:#fff;color:var(--c-primary)}
.cta-section .btn:hover{transform:translateY(-2px);color:var(--c-primary)}

/* Footer */
.site-footer{background:#080410;padding:64px 0 30px;border-top:1px solid var(--c-border)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:40px}
.foot-brand p{color:var(--c-muted);font-size:14px;margin-top:16px;max-width:340px}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:18px}
.foot-col ul li{margin-bottom:10px;color:var(--c-muted);font-size:14px}
.foot-col ul li a{color:var(--c-muted)}
.foot-col ul li a:hover{color:var(--c-primary)}
.foot-bottom{
  padding-top:24px;border-top:1px solid var(--c-border);
  display:flex;justify-content:space-between;gap:20px;
  color:var(--c-dim);font-size:13px;flex-wrap:wrap;
}

/* Responsive */
@media (max-width:1024px){
  .hero-wrap{grid-template-columns:1fr;gap:40px}
  .hero h1{font-size:42px}
  .feat-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-list{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--c-bg-2);padding:16px;flex-direction:column;align-items:stretch;
    border-top:1px solid var(--c-border);
  }
  .nav-list.open{display:flex}
  .nav-list a{padding:12px 16px;border-radius:8px}
  .nav-toggle{display:block}
  .hero{padding:70px 0 60px}
  .hero h1{font-size:34px}
  .sec-head h2{font-size:28px}
  .cta-section h2{font-size:28px}
  section{padding:var(--sp-5) 0}
}
@media (max-width:520px){
  .hero h1{font-size:28px}
  .feat-grid,.scene-grid,.flow{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr}
  .hero-stats{gap:20px}
  .hero-stats .st strong{font-size:22px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{justify-content:center}
}

/* roulang page: category1 */
:root{
  --c-bg:#0b0910;
  --c-bg-2:#141020;
  --c-surface:#1b1626;
  --c-surface-2:#221b31;
  --c-line:#2c2440;
  --c-text:#f4eef8;
  --c-mute:#a89fb8;
  --c-primary:#ff2e77;
  --c-primary-2:#c31c8a;
  --c-accent:#ffb400;
  --c-accent-2:#7a5cff;
  --c-ok:#3ddc97;
  --radius-s:10px;
  --radius:16px;
  --radius-l:24px;
  --shadow-s:0 4px 14px rgba(0,0,0,.28);
  --shadow:0 18px 44px rgba(0,0,0,.4);
  --shadow-pink:0 14px 36px rgba(255,46,119,.35);
  --sp-1:8px;--sp-2:14px;--sp-3:22px;--sp-4:34px;--sp-5:56px;--sp-6:84px;
  --f-sans:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--f-sans);
  background:radial-gradient(1200px 700px at 85% -10%,rgba(255,46,119,.16),transparent 60%),
             radial-gradient(900px 600px at -10% 20%,rgba(122,92,255,.14),transparent 60%),
             var(--c-bg);
  color:var(--c-text);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary)}
img{max-width:100%;display:block;border-radius:var(--radius-s)}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4,h5{margin:0 0 var(--sp-2);line-height:1.25;font-weight:700;letter-spacing:.2px}
h1{font-size:clamp(30px,4.5vw,52px)}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:20px}
p{margin:0 0 var(--sp-2);color:var(--c-mute)}
ul{margin:0;padding:0;list-style:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* Header / Nav */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(11,9,16,.82);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--c-line);
}
.site-header .nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--c-text)}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  color:#fff;font-weight:900;box-shadow:var(--shadow-pink);
}
.brand-name{font-size:18px;letter-spacing:.5px}
.nav-list{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.nav-list a{
  padding:10px 14px;border-radius:10px;font-size:14px;color:var(--c-mute);
  transition:background .2s ease,color .2s ease;
}
.nav-list a:hover{color:#fff;background:rgba(255,255,255,.05)}
.nav-list a.active{color:#fff;background:rgba(255,46,119,.14);box-shadow:inset 0 0 0 1px rgba(255,46,119,.4)}
.nav-list a.nav-cta{
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  color:#fff;padding:10px 18px;box-shadow:var(--shadow-pink);
}
.nav-list a.nav-cta:hover{transform:translateY(-1px);color:#fff}
.nav-toggle{display:none;font-size:22px;padding:6px 10px;border-radius:8px;color:#fff}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:14px 24px;border-radius:12px;
  font-weight:600;font-size:15px;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.btn-primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;box-shadow:var(--shadow-pink)}
.btn-primary:hover{transform:translateY(-2px);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border:1px solid var(--c-line)}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff}
.btn-accent{background:linear-gradient(135deg,var(--c-accent),#ff7d3d);color:#231400;box-shadow:0 12px 30px rgba(255,180,0,.3)}
.btn-accent:hover{transform:translateY(-2px);color:#231400}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 12px;border-radius:999px;font-size:12px;
  background:rgba(255,46,119,.12);color:#ff89b3;
  border:1px solid rgba(255,46,119,.3);
}

/* Hero */
.hero-hd{
  position:relative;overflow:hidden;padding:96px 0 80px;
}
.hero-hd::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,9,16,.85),rgba(11,9,16,.92)),
             url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  z-index:-2;
}
.hero-hd::after{
  content:"";position:absolute;inset:auto -10% -30% -10%;height:60%;
  background:radial-gradient(60% 60% at 50% 50%,rgba(122,92,255,.25),transparent 70%);
  z-index:-1;filter:blur(30px);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero-copy .badge{margin-bottom:20px}
.hero-copy h1 span{background:linear-gradient(135deg,#ff5ea2,#ffb400);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy .lead{font-size:17px;color:#d6cee2;margin:18px 0 28px;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.hero-meta{display:flex;flex-wrap:wrap;gap:26px}
.hero-meta div{min-width:120px}
.hero-meta strong{display:block;font-size:26px;color:#fff}
.hero-meta small{color:var(--c-mute);font-size:13px}

.hero-visual{
  position:relative;height:460px;border-radius:var(--radius-l);
  overflow:hidden;
  background:linear-gradient(160deg,rgba(255,46,119,.2),rgba(122,92,255,.2)),
             url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
  border:1px solid var(--c-line);
  box-shadow:var(--shadow);
}
.hero-visual .play-tag{
  position:absolute;left:22px;top:22px;
  padding:8px 14px;border-radius:999px;background:rgba(0,0,0,.55);
  font-size:12px;color:#fff;display:inline-flex;align-items:center;gap:6px;
}
.hero-visual .play-tag i{width:8px;height:8px;background:var(--c-ok);border-radius:50%;display:inline-block}
.hero-visual .play-btn{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:82px;height:82px;border-radius:50%;
  background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));
  display:grid;place-items:center;color:#fff;font-size:26px;
  box-shadow:0 20px 50px rgba(255,46,119,.6);
}
.hero-visual .video-strip{
  position:absolute;left:20px;right:20px;bottom:20px;
  background:rgba(11,9,16,.75);backdrop-filter:blur(10px);
  border:1px solid var(--c-line);
  padding:14px 18px;border-radius:16px;
  display:flex;align-items:center;gap:14px;
}
.video-strip .thumb{width:56px;height:56px;border-radius:12px;background:url('/assets/images/coverpic/cover-2.webp') center/cover;flex-shrink:0}
.video-strip h4{margin:0;font-size:14px;color:#fff}
.video-strip p{margin:4px 0 0;font-size:12px;color:var(--c-mute)}
.video-strip .q-tag{margin-left:auto;padding:4px 10px;border-radius:6px;font-size:11px;background:rgba(255,180,0,.16);color:var(--c-accent);border:1px solid rgba(255,180,0,.35)}

/* Section base */
.section{padding:var(--sp-6) 0;position:relative}
.section-head{max-width:720px;margin:0 auto var(--sp-5);text-align:center}
.section-head .badge{margin-bottom:14px}
.section-head p{font-size:16px}

/* Quality tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.tier-card{
  padding:32px 28px;border-radius:var(--radius);
  background:linear-gradient(180deg,var(--c-surface),var(--c-surface-2));
  border:1px solid var(--c-line);position:relative;overflow:hidden;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.tier-card:hover{transform:translateY(-6px);border-color:rgba(255,46,119,.4);box-shadow:var(--shadow-pink)}
.tier-card .q-num{
  position:absolute;right:-10px;top:-20px;font-size:120px;font-weight:900;
  color:rgba(255,255,255,.03);
}
.tier-card h3{font-size:22px;color:#fff}
.tier-card .price{font-size:14px;color:var(--c-accent);margin-bottom:16px}
.tier-card ul li{padding:8px 0;color:var(--c-mute);font-size:14px;border-bottom:1px dashed rgba(255,255,255,.06);display:flex;gap:10px}
.tier-card ul li:last-child{border-bottom:0}
.tier-card ul li::before{content:"◆";color:var(--c-primary);font-size:10px;margin-top:6px}
.tier-card.featured{background:linear-gradient(180deg,rgba(255,46,119,.14),rgba(122,92,255,.12));border-color:rgba(255,46,119,.4)}
.tier-card.featured .price{color:#ffe6a8}

/* Feature grid */
.feature-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
.feature-media{
  border-radius:var(--radius-l);overflow:hidden;position:relative;
  border:1px solid var(--c-line);box-shadow:var(--shadow);
}
.feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0}
.feature-media::after{
  content:"操逼APP · 官方画质保障";
  position:absolute;left:20px;bottom:18px;
  background:rgba(11,9,16,.7);border:1px solid var(--c-line);
  padding:8px 14px;border-radius:999px;font-size:12px;color:#fff;
}
.feature-list{display:grid;grid-template-columns:1fr;gap:16px}
.feature-item{
  padding:22px;border-radius:var(--radius);
  background:rgba(255,255,255,.03);border:1px solid var(--c-line);
  display:flex;gap:18px;align-items:flex-start;
  transition:background .2s ease,transform .2s ease;
}
.feature-item:hover{background:rgba(255,46,119,.06);transform:translateX(4px)}
.feature-item .ico{
  flex-shrink:0;width:46px;height:46px;border-radius:12px;
  display:grid;place-items:center;font-size:22px;
  background:linear-gradient(135deg,rgba(255,46,119,.2),rgba(122,92,255,.2));
  color:#ffb0cd;
}
.feature-item h4{margin:0 0 6px;color:#fff;font-size:16px}
.feature-item p{margin:0;font-size:14px}

/* Scene cards */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene-card{
  border-radius:var(--radius);overflow:hidden;position:relative;
  border:1px solid var(--c-line);background:var(--c-surface);
  transition:transform .25s ease,box-shadow .25s ease;
}
.scene-card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.scene-card .cover{height:180px;background-size:cover;background-position:center;position:relative}
.scene-card .cover::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(11,9,16,.9))}
.scene-card .cover .tag{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:4px 10px;border-radius:6px;font-size:11px;font-weight:600;
  background:rgba(0,0,0,.55);color:#fff;border:1px solid rgba(255,255,255,.15);
}
.scene-card .body{padding:18px}
.scene-card h4{color:#fff;font-size:16px;margin:0 0 8px}
.scene-card p{font-size:13px;margin:0}

/* Process timeline */
.flow{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(120deg,var(--c-surface),var(--c-surface-2));
  border:1px solid var(--c-line);
}
.flow-step{padding:30px 24px;border-right:1px solid var(--c-line);position:relative}
.flow-step:last-child{border-right:0}
.flow-step .n{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-weight:800;
  background:linear-gradient(135deg,var(--c-primary),var(--c-accent-2));color:#fff;
  margin-bottom:16px;font-size:18px;
}
.flow-step h4{color:#fff;font-size:17px}
.flow-step p{font-size:13px;margin:0}

/* Stats */
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:38px;border-radius:var(--radius-l);
  background:linear-gradient(135deg,rgba(255,46,119,.14),rgba(122,92,255,.14));
  border:1px solid rgba(255,46,119,.28);
}
.stat b{display:block;font-size:34px;color:#fff;font-weight:800}
.stat span{color:#efdbe6;font-size:13px}

/* FAQ */
.faq-list{display:grid;grid-template-columns:1fr;gap:14px;max-width:900px;margin:0 auto}
.faq{
  border-radius:var(--radius);border:1px solid var(--c-line);
  background:var(--c-surface);overflow:hidden;transition:border-color .2s ease;
}
.faq:hover{border-color:rgba(255,46,119,.4)}
.faq summary{
  padding:20px 24px;cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;
  color:#fff;font-weight:600;font-size:16px;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:22px;color:var(--c-primary);transition:transform .2s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq .a{padding:0 24px 22px;color:var(--c-mute);font-size:14px}

/* CTA */
.cta-banner{
  padding:52px 44px;border-radius:var(--radius-l);
  background:
    linear-gradient(135deg,rgba(11,9,16,.72),rgba(11,9,16,.85)),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border:1px solid var(--c-line);
  display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:center;
  box-shadow:var(--shadow);
}
.cta-banner h2{color:#fff;margin-bottom:12px}
.cta-banner p{color:#d6cee2}
.cta-actions{display:flex;flex-direction:column;gap:14px}
.cta-actions .btn{justify-content:center}

/* Footer */
.site-footer{background:#08060d;border-top:1px solid var(--c-line);padding:64px 0 28px;margin-top:60px}
.site-footer .foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:44px;
  padding-bottom:36px;border-bottom:1px solid var(--c-line);
}
.foot-brand p{margin-top:14px;font-size:13px;color:var(--c-mute);max-width:320px}
.foot-col h5{color:#fff;font-size:15px;margin-bottom:16px}
.foot-col ul li{margin-bottom:10px;font-size:13px;color:var(--c-mute)}
.foot-col ul li a{color:var(--c-mute)}
.foot-col ul li a:hover{color:#fff}
.foot-bottom{
  padding-top:22px;display:flex;justify-content:space-between;
  color:var(--c-mute);font-size:12px;flex-wrap:wrap;gap:10px;
}

/* Responsive */
@media (max-width:1024px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-visual{height:400px}
  .feature-wrap{grid-template-columns:1fr}
  .tiers,.scene-grid,.flow,.stats{grid-template-columns:repeat(2,1fr)}
  .flow-step{border-right:0;border-bottom:1px solid var(--c-line)}
  .flow-step:nth-child(2){border-right:0}
  .cta-banner{grid-template-columns:1fr}
  .site-footer .foot-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .nav-toggle{display:inline-flex}
  .nav-list{
    position:absolute;right:16px;top:64px;flex-direction:column;align-items:stretch;
    background:rgba(20,16,32,.98);padding:14px;border-radius:14px;border:1px solid var(--c-line);
    display:none;min-width:220px;box-shadow:var(--shadow);
  }
  .nav-list.open{display:flex}
  .hero-hd{padding:64px 0 60px}
  .section{padding:64px 0}
  .stats{padding:26px}
  .stat b{font-size:26px}
  .cta-banner{padding:32px 24px}
}
@media (max-width:520px){
  .tiers,.scene-grid,.flow,.stats,.site-footer .foot-grid{grid-template-columns:1fr}
  .hero-visual{height:340px}
  .hero-visual .play-btn{width:64px;height:64px;font-size:20px}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}

/* roulang page: category4 */
:root{
  --c-bg:#0d0b14;
  --c-bg-2:#141020;
  --c-surface:#1c1730;
  --c-surface-2:#251d3d;
  --c-primary:#ff3d7f;
  --c-primary-2:#ff6b9b;
  --c-accent:#8b5cf6;
  --c-accent-2:#c084fc;
  --c-text:#f5f3ff;
  --c-muted:#a099c0;
  --c-border:rgba(255,255,255,.08);
  --c-border-2:rgba(255,255,255,.14);
  --radius-sm:8px;
  --radius:14px;
  --radius-lg:22px;
  --shadow-sm:0 4px 14px rgba(0,0,0,.25);
  --shadow:0 12px 40px rgba(139,92,246,.18);
  --shadow-lg:0 24px 60px rgba(255,61,127,.28);
  --grad-primary:linear-gradient(135deg,#ff3d7f 0%,#8b5cf6 100%);
  --grad-soft:linear-gradient(135deg,rgba(255,61,127,.14),rgba(139,92,246,.14));
  --sp-xs:8px;
  --sp-sm:14px;
  --sp:22px;
  --sp-md:36px;
  --sp-lg:60px;
  --sp-xl:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  color:var(--c-text);
  background:var(--c-bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s ease}
a:hover{color:var(--c-primary-2)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.3;font-weight:700;letter-spacing:-.01em}
p{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* Header / Nav */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(13,11,20,.85);
  backdrop-filter:blur(18px);
  -webkit-backdrop-filter:blur(18px);
  border-bottom:1px solid var(--c-border);
}
.site-header .nav{
  display:flex;align-items:center;justify-content:space-between;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:var(--grad-primary);
  display:grid;place-items:center;
  color:#fff;font-size:18px;font-weight:900;
  box-shadow:var(--shadow-sm);
}
.brand-name{font-size:19px;letter-spacing:.02em}
.nav-list{display:flex;align-items:center;gap:6px}
.nav-list a{
  padding:8px 14px;border-radius:10px;
  font-size:14.5px;color:var(--c-muted);
  transition:all .2s ease;
}
.nav-list a:hover{color:var(--c-text);background:rgba(255,255,255,.05)}
.nav-list a.active{color:var(--c-text);background:var(--grad-soft)}
.nav-list a.nav-cta{
  background:var(--grad-primary);color:#fff;
  padding:10px 20px;margin-left:8px;
  box-shadow:0 6px 20px rgba(255,61,127,.35);
}
.nav-list a.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(255,61,127,.45)}
.nav-toggle{
  display:none;font-size:22px;padding:8px 12px;
  border-radius:8px;background:rgba(255,255,255,.06);
}

/* Hero */
.hero{
  position:relative;
  padding:var(--sp-xl) 0 var(--sp-lg);
  background:
    linear-gradient(180deg,rgba(13,11,20,.35) 0%,rgba(13,11,20,.92) 90%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 20% 30%,rgba(255,61,127,.25),transparent 55%),
             radial-gradient(ellipse at 80% 70%,rgba(139,92,246,.22),transparent 55%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;max-width:920px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,61,127,.12);
  border:1px solid rgba(255,61,127,.3);
  color:var(--c-primary-2);
  font-size:13px;font-weight:600;
  margin-bottom:var(--sp);
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-primary);box-shadow:0 0 12px var(--c-primary)}
.hero h1{
  font-size:clamp(32px,5vw,56px);
  margin-bottom:var(--sp);
  background:linear-gradient(120deg,#fff 0%,#ffd6e6 50%,#c084fc 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  font-size:clamp(15px,1.5vw,18px);
  color:var(--c-muted);max-width:720px;
  margin-bottom:var(--sp-md);
}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:var(--sp-md)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:12px;
  font-weight:600;font-size:15px;
  transition:all .25s ease;
}
.btn-primary{background:var(--grad-primary);color:#fff;box-shadow:0 8px 24px rgba(255,61,127,.35)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,61,127,.5);color:#fff}
.btn-ghost{background:rgba(255,255,255,.06);border:1px solid var(--c-border-2);color:var(--c-text)}
.btn-ghost:hover{background:rgba(255,255,255,.1);border-color:var(--c-primary-2)}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:24px;border-radius:var(--radius-lg);
  background:rgba(28,23,48,.5);
  border:1px solid var(--c-border);
  backdrop-filter:blur(10px);
}
.stat-num{font-size:clamp(22px,2.6vw,32px);font-weight:800;color:var(--c-primary-2)}
.stat-label{font-size:13px;color:var(--c-muted);margin-top:4px}

/* Section base */
.section{padding:var(--sp-xl) 0}
.section-head{text-align:center;max-width:760px;margin:0 auto var(--sp-lg)}
.section-tag{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:var(--grad-soft);color:var(--c-primary-2);
  font-size:13px;font-weight:600;margin-bottom:14px;
  border:1px solid rgba(255,61,127,.2);
}
.section h2{font-size:clamp(26px,3.4vw,40px);margin-bottom:14px}
.section-sub{color:var(--c-muted);font-size:16px}

/* Benefits Grid */
.bg-alt{background:var(--c-bg-2)}
.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.benefit-card{
  padding:32px 28px;border-radius:var(--radius-lg);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  transition:all .3s ease;position:relative;overflow:hidden;
}
.benefit-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:var(--grad-primary);
  opacity:0;transition:opacity .3s ease;
}
.benefit-card:hover{transform:translateY(-4px);border-color:var(--c-border-2);box-shadow:var(--shadow)}
.benefit-card:hover::before{opacity:1}
.benefit-icon{
  width:52px;height:52px;border-radius:14px;
  background:var(--grad-soft);
  display:grid;place-items:center;
  font-size:24px;margin-bottom:20px;
  border:1px solid rgba(255,61,127,.25);
}
.benefit-card h3{font-size:20px;margin-bottom:10px}
.benefit-card p{color:var(--c-muted);font-size:14.5px}

/* Revenue tiers */
.tiers{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.tier{
  padding:36px 28px;border-radius:var(--radius-lg);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  position:relative;transition:transform .3s ease;
}
.tier.featured{
  background:linear-gradient(180deg,var(--c-surface-2) 0%,var(--c-surface) 100%);
  border:1px solid rgba(255,61,127,.4);
  transform:scale(1.03);
  box-shadow:var(--shadow-lg);
}
.tier:hover{transform:translateY(-4px)}
.tier.featured:hover{transform:scale(1.03) translateY(-4px)}
.tier-badge{
  position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  padding:5px 14px;border-radius:999px;
  background:var(--grad-primary);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.05em;
}
.tier-name{font-size:14px;color:var(--c-primary-2);font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.tier-share{font-size:44px;font-weight:800;margin-bottom:6px}
.tier-share span{font-size:16px;color:var(--c-muted);font-weight:500}
.tier-desc{color:var(--c-muted);margin-bottom:24px;font-size:14px}
.tier ul{display:flex;flex-direction:column;gap:12px;margin-bottom:28px}
.tier li{display:flex;gap:10px;font-size:14.5px;color:var(--c-text)}
.tier li::before{content:"✓";color:var(--c-primary);font-weight:700;flex-shrink:0}
.tier .btn{width:100%;justify-content:center}

/* Process timeline */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;position:relative}
.step{
  padding:28px 22px;border-radius:var(--radius);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  position:relative;transition:all .3s ease;
}
.step:hover{border-color:var(--c-primary);transform:translateY(-3px)}
.step-num{
  width:42px;height:42px;border-radius:12px;
  background:var(--grad-primary);color:#fff;
  display:grid;place-items:center;
  font-weight:800;font-size:18px;
  margin-bottom:16px;box-shadow:var(--shadow-sm);
}
.step h4{font-size:17px;margin-bottom:8px}
.step p{color:var(--c-muted);font-size:14px}

/* Dashboard preview */
.dashboard-wrap{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.dashboard-copy h2{margin-bottom:20px}
.dashboard-copy>p{color:var(--c-muted);margin-bottom:28px;font-size:16px}
.feature-list{display:flex;flex-direction:column;gap:18px}
.feature-item{display:flex;gap:16px;align-items:flex-start}
.feature-check{
  width:32px;height:32px;border-radius:10px;
  background:var(--grad-soft);
  display:grid;place-items:center;
  color:var(--c-primary-2);font-weight:800;
  flex-shrink:0;border:1px solid rgba(255,61,127,.25);
}
.feature-item h5{font-size:16px;margin-bottom:4px}
.feature-item p{color:var(--c-muted);font-size:14px}
.dashboard-img{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--c-border-2);
  box-shadow:var(--shadow-lg);
  position:relative;
}
.dashboard-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.dashboard-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 40%,rgba(13,11,20,.5));
}

/* Suitable audience */
.audience{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.aud-card{
  padding:26px;border-radius:var(--radius);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  transition:all .3s ease;
}
.aud-card:hover{background:var(--c-surface-2);border-color:var(--c-primary);transform:translateY(-3px)}
.aud-emoji{font-size:32px;margin-bottom:14px;display:block}
.aud-card h4{font-size:17px;margin-bottom:8px}
.aud-card p{color:var(--c-muted);font-size:13.5px}

/* Content types */
.content-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{
  border-radius:var(--radius-lg);overflow:hidden;
  background:var(--c-surface);
  border:1px solid var(--c-border);
  transition:all .3s ease;
}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.content-img{aspect-ratio:16/10;overflow:hidden;position:relative}
.content-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.content-card:hover .content-img img{transform:scale(1.06)}
.content-img::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 50%,rgba(28,23,48,.85));
}
.content-tag{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:5px 12px;border-radius:999px;
  background:rgba(13,11,20,.6);
  border:1px solid rgba(255,255,255,.2);
  color:#fff;font-size:12px;font-weight:600;
  backdrop-filter:blur(8px);
}
.content-body{padding:22px 24px 26px}
.content-body h3{font-size:19px;margin-bottom:10px}
.content-body p{color:var(--c-muted);font-size:14px;margin-bottom:16px}
.content-meta{display:flex;gap:14px;color:var(--c-muted);font-size:12.5px}
.content-meta span{display:inline-flex;align-items:center;gap:4px}

/* FAQ */
.faq{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{
  border-radius:var(--radius);
  background:var(--c-surface);
  border:1px solid var(--c-border);
  overflow:hidden;transition:border-color .2s ease;
}
.faq-item:hover{border-color:var(--c-border-2)}
.faq-item summary{
  padding:22px 26px;font-weight:600;font-size:16.5px;
  cursor:pointer;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:16px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:24px;font-weight:400;
  color:var(--c-primary-2);
  transition:transform .3s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--c-primary-2)}
.faq-body{padding:0 26px 24px;color:var(--c-muted);font-size:15px;line-height:1.75}

/* CTA */
.cta-band{
  padding:var(--sp-xl) 0;
  background:
    linear-gradient(135deg,rgba(255,61,127,.25),rgba(139,92,246,.35)),
    url('/assets/images/backpic/back-3.webp') center/cover no-repeat fixed;
  position:relative;text-align:center;
}
.cta-band::before{content:"";position:absolute;inset:0;background:rgba(13,11,20,.55)}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto;padding:0 24px}
.cta-inner h2{font-size:clamp(28px,3.8vw,42px);margin-bottom:16px}
.cta-inner p{color:#e8e0f5;font-size:17px;margin-bottom:32px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{
  background:#08060f;
  padding:var(--sp-lg) 0 24px;
  border-top:1px solid var(--c-border);
}
.foot-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;margin-bottom:48px;
}
.foot-brand p{color:var(--c-muted);margin-top:16px;font-size:14px;max-width:320px}
.foot-col h5{font-size:15px;margin-bottom:18px;color:var(--c-text)}
.foot-col ul{display:flex;flex-direction:column;gap:10px}
.foot-col a,.foot-col li{color:var(--c-muted);font-size:14px;transition:color .2s ease}
.foot-col a:hover{color:var(--c-primary-2)}
.foot-bottom{
  padding-top:24px;border-top:1px solid var(--c-border);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  color:var(--c-muted);font-size:13px;
}

/* Responsive */
@media (max-width:1024px){
  .benefits,.tiers,.content-grid{grid-template-columns:repeat(2,1fr)}
  .tier.featured{transform:none}
  .tier.featured:hover{transform:translateY(-4px)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .audience{grid-template-columns:repeat(2,1fr)}
  .dashboard-wrap{grid-template-columns:1fr;gap:40px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .nav-list{
    display:none;position:absolute;top:72px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:4px;
    padding:16px 24px 24px;
    background:rgba(13,11,20,.98);
    border-bottom:1px solid var(--c-border);
    backdrop-filter:blur(20px);
  }
  .nav-list.open{display:flex}
  .nav-list a{padding:12px 16px;border-radius:10px}
  .nav-list a.nav-cta{margin-left:0;margin-top:6px;text-align:center}
  .nav-toggle{display:inline-flex}
  .section{padding:var(--sp-lg) 0}
  .hero{padding:var(--sp-lg) 0}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{justify-content:center}
  .cta-band{background-attachment:scroll}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .benefits,.tiers,.content-grid,.steps,.audience{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr);padding:18px;gap:14px}
  .foot-grid{grid-template-columns:1fr;gap:28px}
  .foot-bottom{flex-direction:column;text-align:center}
  .site-header .nav{height:64px}
  .brand-name{font-size:17px}
  .faq-item summary{padding:18px 20px;font-size:15.5px}
  .faq-body{padding:0 20px 20px}
}

/* roulang page: category5 */
:root{
    --primary:#e63946;
    --primary-dark:#c1121f;
    --primary-soft:#fdecec;
    --accent:#588157;
    --accent-soft:#eaf3ec;
    --bg:#ffffff;
    --bg-soft:#f7f5f3;
    --text:#1f2326;
    --muted:#6b7280;
    --line:#e7e3de;
    --radius:14px;
    --radius-lg:22px;
    --shadow:0 10px 30px rgba(31,35,38,.07);
    --shadow-lg:0 18px 48px rgba(31,35,38,.12);
    --space:48px;
    --maxw:1180px;
    --font:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;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}
  ul{list-style:none}
  .container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
  section{padding:72px 0}
  .kicker{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.12em;color:var(--primary);background:var(--primary-soft);padding:6px 14px;border-radius:999px;margin-bottom:18px}
  .kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}
  h1,h2,h3,h4{line-height:1.3;font-weight:700}
  .section-head{max-width:760px;margin-bottom:40px}
  .section-head h2{font-size:clamp(26px,4vw,36px);margin-bottom:12px}
  .section-head p{color:var(--muted);font-size:16px}

  /* Header */
  .site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
  .site-header .nav{display:flex;align-items:center;justify-content:space-between;height:70px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px}
  .brand-mark{width:38px;height:38px;display:grid;place-items:center;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border-radius:11px;font-size:20px;box-shadow:0 4px 12px rgba(225,29,40,.28)}
  .brand-name{letter-spacing:.02em}
  .nav-list{display:flex;align-items:center;gap:6px}
  .nav-list a{padding:8px 14px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text);transition:.2s}
  .nav-list a:hover{background:var(--bg-soft);color:var(--primary)}
  .nav-list a.active{background:var(--primary-soft);color:var(--primary)}
  .nav-cta{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff!important;box-shadow:0 4px 14px rgba(225,29,40,.3)}
  .nav-cta:hover{transform:translateY(-1px);box-shadow:0 6px 18px rgba(225,29,40,.4)}
  .nav-toggle{display:none;background:none;border:1px solid var(--line);font-size:20px;width:42px;height:42px;border-radius:10px;color:var(--text)}

  /* Hero */
  .hero{position:relative;background:linear-gradient(120deg,#2b2d31 0%,#3a2226 60%,#5a2a31 100%);color:#fff;overflow:hidden;padding:88px 0;border-radius:0 0 40px 40px}
  .hero::before{content:"";position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:.18}
  .hero .container{position:relative;z-index:2}
  .hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
  .hero .kicker{background:rgba(255,255,255,.12);color:#ffd9db;border:1px solid rgba(255,255,255,.18)}
  .hero .kicker::before{background:#ffd9db}
  .hero h1{font-size:clamp(30px,5vw,46px);margin-bottom:18px}
  .hero h1 em{font-style:normal;color:#ff9da5}
  .hero p{font-size:17px;color:rgba(255,255,255,.82);max-width:520px;margin-bottom:30px}
  .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:12px;font-weight:600;font-size:15px;border:none;transition:.22s}
  .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 6px 18px rgba(225,29,40,.3)}
  .btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(225,29,40,.4)}
  .btn-ghost{background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.3)}
  .btn-ghost:hover{background:rgba(255,255,255,.2)}
  .hero-stat{display:flex;gap:36px;margin-top:38px;flex-wrap:wrap}
  .hero-stat div b{font-size:30px;display:block}
  .hero-stat div span{font-size:13px;color:rgba(255,255,255,.7)}
  .hero-art{position:relative}
  .shield-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(6px);border-radius:var(--radius-lg);padding:34px;text-align:center}
  .shield-card .ic{font-size:46px;margin-bottom:14px}
  .shield-card h3{font-size:20px;margin-bottom:8px}
  .shield-card p{font-size:14px;color:rgba(255,255,255,.78)}
  .shield-badges{display:flex;gap:10px;justify-content:center;margin-top:18px;flex-wrap:wrap}
  .shield-badges span{font-size:12px;background:rgba(255,255,255,.14);padding:6px 12px;border-radius:999px}

  /* Trust strip */
  .trust-strip{background:var(--bg-soft);border-top:1px solid var(--line);padding:34px 0}
  .trust-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .trust-item{text-align:center;display:flex;align-items:center;gap:12px;justify-content:center}
  .trust-item .ti{font-size:26px}
  .trust-item b{display:block;font-size:15px}
  .trust-item span{font-size:12.5px;color:var(--muted)}

  /* Security pillars */
  .pillars{background:#fff}
  .pillar-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  .pillar-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
  .pillar-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:transparent}
  .pillar-card .ic{width:50px;height:50px;border-radius:13px;display:grid;place-items:center;font-size:24px;margin-bottom:16px}
  .pillar-card:nth-child(1) .ic{background:var(--primary-soft)}
  .pillar-card:nth-child(2) .ic{background:var(--accent-soft)}
  .pillar-card:nth-child(3) .ic{background:#fdf3e3}
  .pillar-card h3{font-size:18px;margin-bottom:8px}
  .pillar-card p{font-size:14.5px;color:var(--muted)}

  /* Privacy settings */
  .privacy{background:var(--bg-soft)}
  .privacy-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
  .setting-card{display:flex;gap:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;align-items:flex-start}
  .setting-card .num{width:42px;height:42px;flex:none;border-radius:11px;background:var(--primary-soft);color:var(--primary);font-weight:800;display:grid;place-items:center;font-size:17px}
  .setting-card h3{font-size:17px;margin-bottom:6px}
  .setting-card p{font-size:14px;color:var(--muted)}

  /* Chat safety steps */
  .steps{background:#fff}
  .steps-list{counter-reset:step;display:grid;grid-template-columns:repeat(2,1fr);gap:0 48px;row-gap:34px}
  .step-item{position:relative;padding-left:64px;counter-increment:step}
  .step-item::before{content:counter(step);position:absolute;left:0;top:4px;width:46px;height:46px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:grid;place-items:center;font-size:19px;font-weight:800;box-shadow:0 5px 14px rgba(225,29,40,.28)}
  .step-item h3{font-size:17px;margin-bottom:6px}
  .step-item p{font-size:14.5px;color:var(--muted)}

  /* Anti fraud */
  .fraud{background:linear-gradient(120deg,#2b2d31,#3a2226);color:#fff;border-radius:var(--radius-lg);overflow:hidden}
  .fraud-inner{padding:50px 44px;display:grid;grid-template-columns:1fr 1.2fr;gap:36px;align-items:center}
  .fraud h2{font-size:clamp(22px,3vw,30px);margin-bottom:14px}
  .fraud p{color:rgba(255,255,255,.8);font-size:15px;margin-bottom:20px}
  .fraud-tags{display:flex;flex-wrap:wrap;gap:10px}
  .fraud-tags span{font-size:13px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:7px 14px;border-radius:999px}
  .fraud-rules{display:grid;gap:12px}
  .fraud-rule{display:flex;gap:12px;align-items:flex-start;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);padding:14px 16px;border-radius:12px;font-size:14px}
  .fraud-rule b{color:#ff9da5;flex:none}

  /* FAQ */
  .faq{background:var(--bg-soft)}
  .faq-list{max-width:860px;margin:0 auto}
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
  .faq-q{width:100%;text-align:left;background:none;border:none;padding:20px 22px;font-size:16px;font-weight:600;display:flex;justify-content:space-between;align-items:center;color:var(--text)}
  .faq-q::after{content:"+";font-size:22px;color:var(--primary);transition:.25s}
  .faq-item.open .faq-q::after{transform:rotate(45deg)}
  .faq-a{display:none;padding:0 22px 20px;color:var(--muted);font-size:14.5px}

  /* CTA */
  .cta{background:#fff}
  .cta-box{background:linear-gradient(120deg,var(--primary),var(--primary-dark));border-radius:var(--radius-lg);padding:52px 44px;text-align:center;color:#fff;position:relative;overflow:hidden}
  .cta-box::before{content:"";position:absolute;top:-80px;right:-80px;width:240px;height:240px;border-radius:50%;background:rgba(255,255,255,.1)}
  .cta-box h2{font-size:clamp(24px,4vw,34px);margin-bottom:12px}
  .cta-box p{font-size:16px;color:rgba(255,255,255,.88);margin-bottom:28px}
  .btn-white{background:#fff;color:var(--primary-dark);box-shadow:0 6px 18px rgba(0,0,0,.18)}
  .btn-white:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.24)}

  /* Footer */
  .site-footer{background:#1f2124;color:#c9ccd1;padding:60px 0 30px}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:44px}
  .foot-brand p{font-size:14px;color:#9aa0a8;margin-top:16px;max-width:300px}
  .foot-brand .brand-name{color:#fff}
  .foot-col h5{color:#fff;font-size:15px;margin-bottom:16px}
  .foot-col ul li{margin-bottom:10px}
  .foot-col ul a{font-size:14px;color:#9aa0a8;transition:.2s}
  .foot-col ul a:hover{color:#ff9da5}
  .foot-col ul li{font-size:14px;color:#9aa0a8}
  .foot-bottom{border-top:1px solid #33363a;padding-top:22px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:#8b9096}

  /* Responsive */
  @media(max-width:1024px){
    section{padding:56px 0}
    .hero{padding:64px 0}
    .hero-grid{grid-template-columns:1fr;gap:36px}
    .pillar-grid{grid-template-columns:repeat(2,1fr)}
    .trust-inner{grid-template-columns:repeat(2,1fr)}
    .foot-grid{grid-template-columns:1fr 1fr;gap:32px}
  }
  @media(max-width:768px){
    .nav-toggle{display:block}
    .nav-list{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px;gap:4px;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:.28s;box-shadow:var(--shadow-lg)}
    .nav-list.open{transform:translateY(0)}
    .nav-list a{padding:13px 14px;font-size:15px}
    .privacy-grid,.steps-list{grid-template-columns:1fr;gap:20px}
    .fraud-inner{grid-template-columns:1fr;padding:36px 26px}
    .cta-box{padding:42px 24px}
  }
  @media(max-width:520px){
    .container{padding:0 18px}
    section{padding:44px 0}
    .hero{padding:52px 0}
    .pillar-grid{grid-template-columns:1fr}
    .trust-inner{grid-template-columns:1fr 1fr;gap:16px}
    .hero-stat{gap:22px}
    .hero-actions{flex-direction:column}
    .hero-actions .btn{width:100%}
    .foot-grid{grid-template-columns:1fr;gap:32px}
  }
  @media(max-width:768px){
    .nav-toggle{display:block}
    .nav-list{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:16px;gap:4px;border-bottom:1px solid var(--line);transform:translateY(-140%);transition:.28s;box-shadow:var(--shadow-lg)}
    .nav-list.open{transform:translateY(0)}
    .nav-list a{padding:13px 14px;font-size:15px}
    .privacy-grid,.steps-list{grid-template-columns:1fr;gap:20px}
    .fraud-inner{grid-template-columns:1fr;padding:36px 26px}
    .cta-box{padding:42px 24px}
  }
  @media(max-width:520px){
    .container{padding:0 18px}
    section{padding:44px 0}
    .hero{padding:52px 0}
    .pillar-grid{grid-template-columns:1fr}
    .trust-inner{grid-template-columns:1fr 1fr;gap:16px}
    .hero-stat{gap:22px}
    .hero-actions{flex-direction:column}
    .hero-actions .btn{width:100%}
    .foot-grid{grid-template-columns:1fr;gap:26px}
  }

/* roulang page: index */
:root {
  --primary: #e6334c;
  --primary-dark: #c11f3a;
  --primary-light: #ff6b81;
  --accent: #ff9f1c;
  --accent-dark: #f07e00;
  --dark: #141420;
  --dark-2: #1c1c2e;
  --dark-3: #242438;
  --bg: #f6f6fb;
  --bg-card: #ffffff;
  --text: #20202e;
  --text-light: #55556a;
  --text-fade: #8b8ba0;
  --border: #e6e6f0;
  --border-dark: #2c2c44;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 9px;
  --shadow-sm: 0 2px 10px rgba(20,20,32,0.06);
  --shadow-md: 0 10px 34px rgba(20,20,32,0.1);
  --shadow-lg: 0 24px 60px rgba(20,20,32,0.16);
  --space-section: 104px;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select { font-family: inherit; }
ul { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header & Nav ===== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--dark); letter-spacing: .5px; }
.logo .logo-badge {
  width: 40px; height: 40px; border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(230,51,76,0.32);
}
.logo .logo-badge::first-letter { }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav a {
  padding: 9px 16px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 600; color: var(--text-light);
}
.main-nav a:hover { color: var(--primary); background: rgba(230,51,76,0.07); }
.main-nav a.active { color: var(--primary); background: rgba(230,51,76,0.1); }
.nav-cta { display: inline-flex; align-items: center; gap: 7px; padding: 10px 22px; border-radius: var(--radius-sm); background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; font-weight: 700; font-size: 14px; box-shadow: 0 6px 16px rgba(230,51,76,0.3); transition: transform .2s ease, box-shadow .2s ease; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(230,51,76,0.4); color: #fff; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 10px; }
.nav-toggle span { width: 24px; height: 2.5px; background: var(--dark); border-radius: 2px; transition: all .3s ease; }
@media (max-width: 840px) {
  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 74px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; padding: 18px 24px 24px;
    gap: 4px; border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-130%); transition: transform .3s ease; visibility: hidden;
  }
  .main-nav.open { transform: translateY(0); visibility: visible; }
  .main-nav a { padding: 13px 14px; font-size: 16px; }
  .nav-cta { justify-content: center; margin-top: 8px; }
}

/* ===== Hero ===== */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(160deg, #141420 0%, #1f1f36 55%, #2a1030 100%);
  color: #fff; padding: 108px 0 116px;
}
.hero-bg { position: absolute; inset: 0; opacity: .28; background-size: cover; background-position: center; z-index: 1; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(20,20,32,0.55) 0%, rgba(20,20,32,0.15) 45%, rgba(20,20,32,0.65) 100%); z-index: 2; }
.hero .container { position: relative; z-index: 3; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 18px; border-radius: 100px;
  background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.18);
  font-size: 13.5px; font-weight: 600; color: #ffd7de; letter-spacing: .3px;
  margin-bottom: 22px;
}
.hero-tag::before { content: ''; width: 8px; height: 8px; border-radius: 50%; background: var(--primary-light); box-shadow: 0 0 0 4px rgba(255,107,129,0.25); }
.hero h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 800; line-height: 1.22; margin-bottom: 24px; letter-spacing: .5px; }
.hero h1 .hl { color: var(--primary-light); }
.hero-sub { font-size: 17px; line-height: 1.85; color: #c7c7da; max-width: 560px; margin-bottom: 34px; }
.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 30px; border-radius: 12px; font-size: 15px; font-weight: 700; transition: all .22s ease; }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; box-shadow: 0 10px 26px rgba(230,51,76,0.38); }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(230,51,76,0.48); }
.btn-ghost { background: rgba(255,255,255,0.08); color: #fff; border: 1.5px solid rgba(255,255,255,0.28); }
.btn-ghost:hover { background: rgba(255,255,255,0.16); border-color: rgba(255,255,255,0.5); transform: translateY(-3px); }
.hero-stats { display: flex; gap: 44px; flex-wrap: wrap; padding-top: 6px; }
.hero-stats .stat h4 { font-size: 28px; font-weight: 800; margin-bottom: 2px; }
.hero-stats .stat h4 span { color: var(--primary-light); }
.hero-stats .stat p { font-size: 13.5px; color: #a6a6c0; }
.hero-visual { position: relative; }
.hero-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 30px; backdrop-filter: blur(8px);
  box-shadow: 0 30px 70px rgba(0,0,0,0.4);
  position: relative;
}
.hero-card-img { border-radius: var(--radius-md); overflow: hidden; aspect-ratio: 16/10; margin-bottom: 18px; }
.hero-card-img img { width: 100%; height: 100%; object-fit: cover; }
.hero-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 4px; }
.hero-card p { font-size: 14px; color: #b9b9d2; }
.hero-card .rating { margin-top: 14px; display: flex; align-items: center; gap: 10px; font-size: 14px; color: #ffd7de; }
.hero-card .rating span { color: var(--accent); letter-spacing: 2px; }
.float-chip {
  position: absolute; background: #fff; color: var(--dark);
  border-radius: 14px; padding: 12px 18px; font-size: 13.5px; font-weight: 700;
  box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 10px;
  animation: floaty 5s ease-in-out infinite;
}
.float-chip.chip-1 { top: -24px; right: -8px; }
.float-chip.chip-2 { bottom: -18px; left: -22px; animation-delay: 1.6s; }
.float-chip .dot { width: 34px; height: 34px; border-radius: 10px; background: rgba(230,51,76,0.12); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 16px; }
@keyframes floaty { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@media (max-width: 900px) {
  .hero { padding: 70px 0 84px; }
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { max-width: 440px; width: 100%; margin: 0 auto; }
}

/* ===== Section base ===== */
.section { padding: var(--space-section) 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 52px; }
.section-eyebrow { display: inline-block; font-size: 13px; font-weight: 700; color: var(--primary); text-transform: uppercase; letter-spacing: 1.6px; margin-bottom: 14px; padding: 6px 16px; background: rgba(230,51,76,0.08); border-radius: 100px; }
.section-head h2 { font-size: clamp(28px, 3.6vw, 40px); font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.section-head .lead { font-size: 16.5px; color: var(--text-light); line-height: 1.85; }
.section.light { background: #fff; }
.section.dark { background: var(--dark); color: #fff; }
.section.dark .lead { color: #b8b8cf; }
.section.dark .section-eyebrow { background: rgba(255,255,255,0.1); color: var(--primary-light); }

/* ===== Feature cards ===== */
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.feature-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 32px 28px;
  transition: transform .25s ease, box-shadow .25s ease;
  position: relative; overflow: hidden;
}
.feature-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent)); opacity: 0; transition: opacity .25s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 56px; height: 56px; border-radius: 15px; background: linear-gradient(135deg, rgba(230,51,76,0.12), rgba(255,159,28,0.12)); display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px; }
.feature-card h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; }
.feature-card p { font-size: 14.5px; color: var(--text-light); line-height: 1.75; }
@media (max-width: 880px) { .feature-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .feature-grid { grid-template-columns: 1fr; } }

/* ===== Scene / usage ===== */
.scene-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.scene-card { display: flex; gap: 20px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 26px; transition: transform .25s ease, box-shadow .25s ease; }
.scene-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.scene-num { flex-shrink: 0; width: 46px; height: 46px; border-radius: 13px; background: var(--dark); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 17px; }
.scene-card:nth-child(even) .scene-num { background: var(--primary); }
.scene-card h3 { font-size: 17px; font-weight: 700; margin: 4px 0 8px; }
.scene-card p { font-size: 14px; color: var(--text-light); }
@media (max-width: 760px) { .scene-grid { grid-template-columns: 1fr; } }

/* ===== Category / entries ===== */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.cat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: transform .25s ease, box-shadow .25s ease;
}
.cat-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.cat-card-img { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.cat-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.cat-card:hover .cat-card-img img { transform: scale(1.06); }
.cat-card-img::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(20,20,32,0.55)); }
.cat-card-tag { position: absoluteconst cat-card-tag { position: absolute; top: 14px; left: 14px; z-index: 2; background: rgba(20,20,32,0.65); backdrop-filter: blur(6px); color: #fff; font-size: 12.5px; font-weight: 600; padding: 5px 13px; border-radius: 100px; border: 1px solid rgba(255,255,255,0.2); }
.cat-card-body { padding: 22px 22px 24px; }
.cat-card-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.cat-card-body p { font-size: 14px; color: var(--text-light); line-height: 1.75; margin-bottom: 16px; }
.cat-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 700; color: var(--primary); }
.cat-link:hover { gap: 10px; }
@media (max-width: 880px) { .cat-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .cat-grid { grid-template-columns: 1fr; } }

/* ===== CMS list ===== */
.update-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; }
.update-card { display: flex; gap: 18px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 20px; transition: transform .25s ease, box-shadow .25s ease; }
.update-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.update-img { flex-shrink: 0; width: 120px; height: 92px; border-radius: var(--radius-sm); overflow: hidden; }
.update-img img { width: 100%; height: 100%; object-fit: cover; }
.update-info { flex: 1; min-width: 0; }
.update-cat { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); background: rgba(230,51,76,0.08); padding: 3px 11px; border-radius: 100px; margin-bottom: 8px; }
.update-info h3 { font-size: 16px; font-weight: 700; line-height: 1.45; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.update-info h3 a:hover { color: var(--primary); }
.update-info p { font-size: 13.5px; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.update-meta { margin-top: 10px; font-size: 12.5px; color: var(--text-fade); display: flex; gap: 14px; }
.empty-tip { grid-column: 1 / -1; text-align: center; padding: 40px 20px; color: var(--text-fade); background: #fff; border: 1px dashed var(--border); border-radius: var(--radius-lg); }
@media (max-width: 760px) { .update-wrap { grid-template-columns: 1fr; } }
@media (max-width: 480px) { .update-card { flex-direction: column; } .update-img { width: 100%; height: 150px; } }

/* ===== Steps ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-card { text-align: center; padding: 30px 20px; position: relative; }
.step-dot { width: 58px; height: 58px; margin: 0 auto 16px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: #fff; font-size: 22px; font-weight: 800; display: flex; align-items: center; justify-content: center; box-shadow: 0 10px 24px rgba(230,51,76,0.32); }
.step-card:nth-child(2) .step-dot { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); box-shadow: 0 10px 24px rgba(255,159,28,0.32); }
.step-card:nth-child(3) .step-dot { background: linear-gradient(135deg, #7c5cff, #5b3bff); box-shadow: 0 10px 24px rgba(92,59,255,0.32); }
.step-card:nth-child(4) .step-dot { background: linear-gradient(135deg, #16a085, #0e8a72); box-shadow: 0 10px 24px rgba(22,160,133,0.32); }
.step-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.step-card p { font-size: 13.5px; color: var(--text-light); }
.step-arrow { display: none; }
@media (max-width: 900px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .steps { grid-template-columns: 1fr; } }

/* ===== Testimonials ===== */
.testi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.testi-card { background: var(--dark-3); border: 1px solid var(--border-dark); border-radius: var(--radius-lg); padding: 28px; }
.testi-stars { color: var(--accent); letter-spacing: 3px; font-size: 15px; margin-bottom: 14px; }
.testi-card blockquote { font-size: 14.5px; color: #d4d4e6; line-height: 1.85; margin-bottom: 20px; font-style: normal; }
.testi-user { display: flex; align-items: center; gap: 12px; }
.testi-avatar { width: 42px; height: 42px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 15px; }
.testi-user .name { font-size: 14px; font-weight: 700; color: #fff; }
.testi-user .role { font-size: 12.5px; color: #8f8fa8; }
@media (max-width: 880px) { .testi-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .testi-grid { grid-template-columns: 1fr; } }

/* ===== FAQ ===== */
.faq-wrap { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
.faq-item { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-size: 16px; font-weight: 700; color: var(--text); text-align: left; transition: background .25s ease; }
.faq-q:hover { background: rgba(230,51,76,0.04); }
.faq-q .ico { flex-shrink: 0; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 15px; transition: transform .3s ease; }
.faq-item.open .faq-q .ico { transform: rotate(45deg); background: var(--primary); color: #fff; border-color: var(--primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-a p { padding: 0 24px 22px; font-size: 14.5px; color: var(--text-light); line-height: 1.8; }

/* ===== CTA ===== */
.cta { position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: 64px 48px; text-align: center; color: #fff; }
.cta-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.webp'); background-size: cover; background-position: center; }
.cta::before { content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, rgba(230,51,76,0.88), rgba(20,20,32,0.82)); z-index: 1; }
.cta .container { position: relative; z-index: 2; }
.cta h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; margin-bottom: 18px; line-height: 1.35; }
.cta p { font-size: 16px; color: rgba(255,255,255,0.88); max-width: 560px; margin: 0 auto 32px; line-height: 1.85; }
.cta .btn { background: #fff; color: var(--primary); box-shadow: 0 12px 30px rgba(0,0,0,0.22); }
.cta .btn:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(0,0,0,0.3); }
.cta-note { margin-top: 18px; font-size: 13.5px; color: rgba(255,255,255,0.7); }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: #b8b8cf; padding: 64px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--border-dark); margin-bottom: 26px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; line-height: 1.85; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 14px; color: #b8b8cf; }
.footer-col a:hover { color: var(--primary-light); }
.footer-contact p { font-size: 14px; margin-bottom: 10px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 13.5px; color: #77778f; }
.footer-bottom .links { display: flex; gap: 20px; }
.footer-bottom a { color: #77778f; }
.footer-bottom a:hover { color: var(--primary-light); }
@media (max-width: 880px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .footer-grid { grid-template-columns: 1fr; } }

/* ===== Focus / states ===== */
a:focus-visible, button:focus-visible, .faq-q:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; border-radius: 6px; }
::selection { background: rgba(230,51,76,0.18); }