/* roulang page: index */
:root{
  --brand-600:#5A34E8;
  --brand-500:#7A5BFF;
  --brand-300:#B8A6FF;
  --accent-500:#FF7A45;
  --mint-500:#10C8A8;
  --ink-900:#1A1633;
  --ink-600:#5D5A7A;
  --ink-300:#9A97B0;
  --bg-page:#F7F5FF;
  --bg-card:#FFFFFF;
  --bg-deep:#14102B;
  --line:#E7E3F8;
  --grad-brand:linear-gradient(135deg,#4B2BE0 0%,#8E5BFF 52%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,rgba(122,91,255,.14),rgba(255,122,69,.10));
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,22,51,.05);
  --sh-2:0 12px 32px rgba(26,22,51,.08);
  --sh-3:0 24px 60px rgba(74,43,224,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.85;color:var(--ink-900);background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;color:var(--ink-900)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(122,91,255,.35);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}
section{padding:96px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.8vw,36px);line-height:1.25;font-weight:800;letter-spacing:-0.3px}
.section-head .lead{color:var(--ink-600);font-size:15px;margin-top:12px;max-width:640px}
.link-more{font-size:15px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px;transition:.2s ease;white-space:nowrap}
.link-more:hover{color:var(--accent-500);transform:translateX(2px)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;color:var(--brand-600);background:var(--grad-soft);border-radius:var(--r-pill);padding:7px 16px;letter-spacing:.2px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand-500)}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:1040;background:rgba(247,245,255,.86);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:background .28s ease,box-shadow .28s ease,border-color .28s ease}
.site-header.scrolled{background:var(--bg-card);box-shadow:var(--sh-2);border-bottom-color:var(--line)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .28s ease}
.site-header.scrolled .nav-wrap{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--grad-brand);display:grid;place-items:center;box-shadow:0 8px 20px rgba(74,43,224,.28);flex:0 0 38px}
.brand-mark svg{width:20px;height:20px;stroke:#fff;stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:17px;font-weight:800;letter-spacing:-0.2px;line-height:1.2}
.brand-text small{display:block;font-size:11px;font-weight:600;color:var(--ink-300);letter-spacing:.6px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{position:relative;padding:10px 14px;border-radius:var(--r-pill);font-size:15px;font-weight:600;color:var(--ink-600);transition:background .2s ease,color .2s ease}
.nav-link:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-link.active{background:var(--grad-soft);color:var(--brand-600)}
.nav-link.active::after{content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);width:18px;height:2px;border-radius:2px;background:var(--grad-brand)}
.nav-cta{margin-left:10px;padding:11px 22px;font-size:14px;box-shadow:0 12px 26px rgba(74,43,224,.24)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--bg-card);border-radius:14px;position:relative;cursor:pointer;transition:.24s ease}
.nav-toggle span{position:absolute;left:12px;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:.24s ease}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.nav-toggle.active span:nth-child(1){top:21px;transform:rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){top:21px;transform:rotate(-45deg)}
.mobile-drawer{max-height:0;overflow:hidden;background:var(--bg-card);transition:max-height .3s ease;border-radius:0 0 var(--r-lg) var(--r-lg)}
.mobile-drawer.open{max-height:520px;box-shadow:var(--sh-3)}
.mobile-drawer .inner{padding:8px 24px 24px}
.mobile-drawer a{display:flex;align-items:center;height:52px;font-size:16px;font-weight:600;color:var(--ink-600);border-bottom:1px solid var(--line)}
.mobile-drawer a.active{color:var(--brand-600)}
.mobile-drawer .btn-main{width:100%;justify-content:center;margin-top:20px}

/* ---------- buttons ---------- */
.btn-main,.btn-outline,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:var(--r-pill);font-size:15px;font-weight:700;padding:14px 28px;cursor:pointer;transition:transform .2s ease,box-shadow .24s ease,background .24s ease,color .2s ease,border-color .2s ease;border:1.5px solid transparent;line-height:1.2}
.btn-main{background:var(--grad-brand);color:#fff;box-shadow:var(--sh-3)}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 26px 60px rgba(74,43,224,.3)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-outline{background:var(--bg-card);color:var(--brand-600);border-color:var(--brand-500)}
.btn-outline:hover{background:#F1EDFF;color:var(--brand-600);border-color:var(--brand-600);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:#fff;color:var(--bg-deep);transform:translateY(-2px)}
.btn-main[disabled],.btn-outline[disabled]{opacity:.55;cursor:not-allowed;transform:none}
.btn-sm{padding:11px 22px;font-size:14px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px}
.hero::before{content:"";position:absolute;top:-180px;right:-120px;width:620px;height:620px;border-radius:50%;background:radial-gradient(circle,rgba(122,91,255,.16) 0%,rgba(122,91,255,0) 70%);filter:blur(120px);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;font-weight:800;letter-spacing:-0.5px;margin:20px 0 18px}
.hero-sub{font-size:17px;color:var(--ink-600);max-width:520px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:30px 0 34px}
.badge-row{display:flex;align-items:stretch;flex-wrap:wrap;gap:0}
.stat{padding:0 22px;border-left:1px solid var(--line)}
.stat:first-child{padding-left:0;border-left:none}
.stat-num{display:block;font-size:28px;font-weight:800;font-variant-numeric:tabular-nums;background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.2}
.stat-label{display:block;font-size:13px;color:var(--ink-300);margin-top:2px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-xl);box-shadow:var(--sh-3);border:1px solid rgba(26,22,51,.06)}
.float-card{position:absolute;right:-16px;bottom:-22px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-2);padding:18px 22px;display:flex;align-items:center;gap:14px}
.float-card .fc-dot{width:38px;height:38px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;color:var(--brand-600);font-weight:800;font-size:15px}
.float-card strong{display:block;font-size:15px;font-weight:700}
.float-card span{display:block;font-size:13px;color:var(--ink-300)}

/* ---------- badge strip ---------- */
.badge-strip{background:linear-gradient(135deg,rgba(122,91,255,.10),rgba(255,122,69,.07));border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:38px 0}
.badge-strip .items{display:grid;grid-template-columns:repeat(4,1fr)}
.badge-item{padding:4px 26px;border-left:1px solid rgba(122,91,255,.18)}
.badge-item:first-child{border-left:none;padding-left:0}
.badge-item:last-child{padding-right:0}
.badge-item .num{font-size:30px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--brand-600);line-height:1.2}
.badge-item .txt{font-size:13px;color:var(--ink-600);margin-top:4px}

/* ---------- cards ---------- */
.card-soft{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:28px;height:100%;display:flex;flex-direction:column;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.card-soft:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.card-soft h3{font-size:20px;font-weight:700;line-height:1.4;margin-bottom:10px}
.card-soft p{font-size:14.5px;color:var(--ink-600);line-height:1.75}
.icon-capsule{width:40px;height:40px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;margin-bottom:16px;flex:0 0 40px}
.icon-capsule svg{width:20px;height:20px;stroke:var(--brand-600);stroke-width:1.75;fill:none;stroke-linecap:round;stroke-linejoin:round}
.feature-big{padding:0;overflow:hidden}
.feature-big img{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid var(--line)}
.feature-big .fb-body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1}
.feature-big h3{font-size:22px}
.arrow-link{margin-top:auto;padding-top:18px;font-size:14px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.arrow-link:hover{color:var(--accent-500)}

/* ---------- scenes ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;margin-bottom:72px}
.scene:last-child{margin-bottom:0}
.scene.rev .scene-media{order:2}
.scene-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);box-shadow:var(--sh-2);border:1px solid rgba(26,22,51,.06)}
.tag{display:inline-block;font-size:13px;font-weight:700;color:var(--brand-600);background:var(--grad-soft);border-radius:var(--r-pill);padding:6px 14px;margin-bottom:14px}
.scene h3{font-size:22px;font-weight:700;margin-bottom:12px}
.scene p{font-size:15px;color:var(--ink-600)}
.check-list{margin-top:18px}
.check-list li{position:relative;padding-left:30px;margin-bottom:10px;font-size:15px;color:var(--ink-600)}
.check-list li::before{content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;background:rgba(16,200,168,.14)}
.check-list li::after{content:"";position:absolute;left:5px;top:11px;width:8px;height:4px;border-left:2px solid var(--mint-500);border-bottom:2px solid var(--mint-500);transform:rotate(-45deg)}

/* ---------- cases ---------- */
.case-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:28px;height:100%;display:flex;flex-direction:column;gap:16px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.case-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.case-quote{font-size:15.5px;color:var(--ink-600);line-height:1.85}
.case-person{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:16px;border-top:1px solid var(--line)}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--grad-soft);display:grid;place-items:center;font-weight:800;color:var(--brand-600);font-size:15px;flex:0 0 44px}
.case-person strong{display:block;font-size:15px}
.case-person span{display:block;font-size:13px;color:var(--ink-300)}
.case-col-offset{margin-top:32px}

/* ---------- price ---------- */
.price-card{background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-1);padding:32px 28px;height:100%;display:flex;flex-direction:column;position:relative;transition:transform .22s ease,box-shadow .22s ease}
.price-card:hover{box-shadow:var(--sh-2)}
.price-card.featured{border:1.5px solid transparent;background-image:linear-gradient(var(--bg-card),var(--bg-card)),var(--grad-brand);background-origin:border-box;background-clip:padding-box,border-box;transform:translateY(-24px);box-shadow:var(--sh-3)}
.price-card.featured:hover{transform:translateY(-28px)}
.price-flag{position:absolute;top:18px;right:18px;font-size:12px;font-weight:700;color:#fff;background:var(--accent-500);border-radius:var(--r-pill);padding:4px 12px}
.price-card h3{font-size:19px;font-weight:700}
.price-card .plan-desc{font-size:14px;color:var(--ink-300);margin-top:6px}
.price-amount{font-size:38px;font-weight:800;color:var(--ink-900);font-variant-numeric:tabular-nums;margin:18px 0 4px;line-height:1.1}
.price-amount small{font-size:14px;font-weight:600;color:var(--ink-300);margin-left:6px}
.price-features{margin:22px 0 26px}
.price-features li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink-600);margin-bottom:10px}
.price-features li::before{content:"";position:absolute;left:0;top:7px;width:16px;height:16px;border-radius:50%;background:rgba(16,200,168,.14)}
.price-features li::after{content:"";position:absolute;left:4px;top:11px;width:7px;height:3px;border-left:2px solid var(--mint-500);border-bottom:2px solid var(--mint-500);transform:rotate(-45deg)}
.price-card .btn-main,.price-card .btn-outline{width:100%;margin-top:auto}

/* ---------- posts ---------- */
.posts-block{background:linear-gradient(180deg,rgba(122,91,255,.05),rgba(255,255,255,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.post-card{display:flex;flex-direction:column;height:100%;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease}
.post-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.post-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;border-bottom:1px solid rgba(26,22,51,.06)}
.post-thumb.ph{background:var(--grad-soft)}
.post-body{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.post-cat{align-self:flex-start;font-size:12.5px;font-weight:700;color:var(--brand-600);background:var(--grad-soft);border-radius:var(--r-pill);padding:4px 12px}
.post-title{font-size:18px;font-weight:700;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-summary{font-size:14px;color:var(--ink-600);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300)}
.post-meta .read{color:var(--brand-600);font-weight:700}
.empty-state{background:var(--bg-card);border:1px dashed var(--line);border-radius:var(--r-lg);padding:56px 24px;text-align:center;box-shadow:var(--sh-1)}
.empty-state svg{width:46px;height:46px;stroke:var(--brand-300);stroke-width:1.75;fill:none;margin:0 auto 14px}
.empty-state p{color:var(--ink-600);font-size:15px;margin-bottom:18px}

/* ---------- faq ---------- */
.faq .accordion-item{border:1px solid var(--line);border-radius:var(--r-md);background:var(--bg-card);margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1)}
.faq .accordion-item:last-child{margin-bottom:0}
.faq .accordion-button{display:flex;align-items:center;gap:16px;width:100%;padding:20px 22px;font-size:16px;font-weight:700;color:var(--ink-900);background:var(--bg-card);border:0;border-radius:var(--r-md);box-shadow:none}
.faq .accordion-button:not(.collapsed){background:var(--grad-soft);color:var(--brand-600);box-shadow:none}
.faq .accordion-button::after{display:none}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px;margin-left:auto;transition:transform .24s ease}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:currentColor;border-radius:2px}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq .accordion-button:not(.collapsed) .faq-icon{transform:rotate(45deg)}
.faq .accordion-body{padding:0 22px 22px;font-size:15px;line-height:1.8;color:var(--ink-600);background:var(--bg-card)}
.faq .accordion-button:not(.collapsed)+.accordion-collapse .accordion-body{background:transparent}

/* ---------- cta ---------- */
.cta-block{position:relative;overflow:hidden;background:var(--bg-deep);border-radius:var(--r-xl);padding:76px 48px;text-align:center;color:#fff}
.cta-block::before{content:"";position:absolute;top:-200px;left:50%;transform:translateX(-50%);width:760px;height:520px;border-radius:50%;background:radial-gradient(circle,rgba(122,91,255,.42) 0%,rgba(122,91,255,0) 70%);filter:blur(120px);pointer-events:none}
.cta-block h2{color:#fff;font-size:clamp(24px,2.8vw,34px);font-weight:800;position:relative}
.cta-block p{color:rgba(255,255,255,.72);margin:16px auto 30px;max-width:600px;font-size:15.5px;position:relative}
.cta-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:14px;position:relative}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--bg-deep);color:#fff;margin-top:96px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:72px 0 48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.45)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:340px}
.footer-title{font-size:15px;font-weight:700;color:rgba(255,255,255,.92);margin-bottom:18px}
.footer-link{display:block;font-size:14px;line-height:2;color:rgba(255,255,255,.65);transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:var(--brand-300);transform:translateX(2px)}
.footer-contact{font-size:14px;color:rgba(255,255,255,.65);line-height:2}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:22px 0;font-size:13px;color:rgba(255,255,255,.5);display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  section{padding:80px 0}
  .hero{padding:60px 0 76px}
  .hero-grid{gap:40px}
}
@media (max-width:991px){
  .nav-links{display:none}
  .nav-toggle{display:block}
  section{padding:72px 0}
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-media{order:2}
  .float-card{display:none}
  .hero-sub{max-width:none}
  .scene{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .scene.rev .scene-media{order:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-block{padding:60px 32px}
  .price-card.featured{transform:none}
  .price-card.featured:hover{transform:translateY(-6px)}
}
@media (max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  section{padding:56px 0}
  .hero{padding:44px 0 60px}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:32px}
  .badge-strip .items{grid-template-columns:1fr 1fr;gap:22px 0}
  .badge-item{border-left:none;padding:0}
  .badge-item:nth-child(even){padding-left:22px;border-left:1px solid rgba(122,91,255,.18)}
  .badge-row{gap:18px 0}
  .stat{padding:0 16px}
  .cta-block{padding:48px 24px;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr;padding:56px 0 36px}
  .footer-desc{max-width:none}
  .case-col-offset{margin-top:24px}
  .post-title{font-size:17px}
}
@media (max-width:575px){
  body{font-size:15px;line-height:1.8}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .card-soft{padding:20px}
  .feature-big .fb-body{padding:20px}
  .case-card,.price-card{padding:22px}
  .stat-num{font-size:24px}
  .price-amount{font-size:32px}
  .btn-main,.btn-outline,.btn-ghost{padding:13px 22px;font-size:14.5px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn-main,.hero-actions .btn-outline{width:100%}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
}

/* roulang page: article */
:root{
  --brand-600:#5A34E8;
  --brand-500:#7A5BFF;
  --brand-300:#B8A6FF;
  --accent-500:#FF7A45;
  --mint-500:#10C8A8;
  --ink-900:#1A1633;
  --ink-600:#5D5A7A;
  --ink-300:#9A97B0;
  --bg-page:#F7F5FF;
  --bg-card:#FFFFFF;
  --bg-deep:#14102B;
  --line:#E7E3F8;
  --grad-brand:linear-gradient(135deg,#4B2BE0 0%,#8E5BFF 52%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,rgba(122,91,255,.14),rgba(255,122,69,.10));
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:24px; --r-xl:32px; --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,22,51,.05);
  --sh-2:0 12px 32px rgba(26,22,51,.08);
  --sh-3:0 24px 60px rgba(74,43,224,.18);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sec-y:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-weight:800;color:var(--ink-900);letter-spacing:-.2px}
p{margin:0}
ul,ol{margin:0;padding:0}
::selection{background:rgba(122,91,255,.22)}
:focus-visible{outline:3px solid rgba(122,91,255,.35);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;padding:0 24px;margin:0 auto;width:100%}
.row{--bs-gutter-x:24px;--bs-gutter-y:24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(247,245,255,.85);
  border-bottom:1px solid transparent;
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.86);
  border-bottom-color:var(--line);
  box-shadow:var(--sh-2);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:76px;transition:height .28s ease;
}
.site-header.scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;border-radius:14px;background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-3);flex:0 0 auto;
}
.brand-mark svg{width:24px;height:24px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.brand-text{font-size:18px;font-weight:800;color:var(--ink-900);line-height:1.2;letter-spacing:-.3px}
.brand-text small{display:block;font-size:10px;font-weight:600;letter-spacing:2px;color:var(--ink-300)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  padding:10px 14px;border-radius:var(--r-pill);font-size:15px;font-weight:600;color:var(--ink-600);
  position:relative;transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-link.active{background:var(--grad-soft);color:var(--brand-600)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--grad-brand);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--grad-brand);background-size:180% 180%;
  color:#fff!important;border:none;border-radius:var(--r-pill);
  padding:14px 28px;font-size:15px;font-weight:700;line-height:1;
  box-shadow:var(--sh-3);cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background-position .4s ease,filter .22s ease;
}
.btn-main:hover{transform:translateY(-2px);background-position:100% 0;box-shadow:0 18px 40px rgba(74,43,224,.28);filter:saturate(1.06)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-main.is-disabled{opacity:.55;pointer-events:none}
.btn-outline{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;border:1.5px solid var(--brand-500);color:var(--brand-600);
  border-radius:var(--r-pill);padding:14px 28px;font-size:15px;font-weight:700;line-height:1;
  cursor:pointer;transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-outline:hover{background:#F1EDFF;border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;border:1.5px solid rgba(255,255,255,.72);color:#fff;
  border-radius:var(--r-pill);padding:14px 28px;font-size:15px;font-weight:700;line-height:1;
  cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-ghost:hover{background:#fff;color:var(--bg-deep);border-color:#fff}
.nav-cta{padding:12px 22px;font-size:14px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:#fff;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;box-shadow:var(--sh-1);
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .24s ease,opacity .24s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-drawer{
  display:none;background:#fff;border-radius:0 0 var(--r-lg) var(--r-lg);
  box-shadow:var(--sh-3);padding:8px 16px 20px;margin:0 0 12px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a{
  display:block;line-height:52px;padding:0 12px;font-size:16px;font-weight:600;color:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.mobile-drawer a:last-child{border-bottom:none}
.mobile-drawer .btn-main{width:100%;margin-top:14px;border-bottom:none}

/* ---------- page head ---------- */
.page-top{padding:28px 0 0}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-300)}
.crumb a{color:var(--ink-300)}
.crumb a:hover{color:var(--brand-600)}
.crumb .sep{opacity:.6}
.crumb .current{color:var(--brand-600);font-weight:600;max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.article-head{padding:24px 0 0;position:relative}
.article-head::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,91,255,.10),rgba(122,91,255,0) 70%);
  filter:blur(60px);pointer-events:none;z-index:-1;
}
.article-head h1{font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.5px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:14px;color:var(--ink-600)}
.pill{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:var(--r-pill);background:var(--grad-soft);
  color:var(--brand-600);font-size:13px;font-weight:700;
}
.pill.mint{background:rgba(16,200,168,.12);color:#0B9E86}
.meta-sep{width:1px;height:14px;background:var(--line);display:inline-block}
.meta-dot{width:8px;height:8px;border-radius:50%;background:var(--mint-500);display:inline-block}

.figure-wrap{margin:32px 0 0;border-radius:var(--r-xl);overflow:hidden;border:1px solid rgba(26,22,51,.06);box-shadow:var(--sh-2)}
.figure-wrap img{width:100%;aspect-ratio:16/9;object-fit:cover}

/* ---------- article layout ---------- */
.article-section{padding:52px 0 var(--sec-y)}
.article-layout{
  display:grid;grid-template-columns:minmax(0,780px) 300px;gap:48px;justify-content:center;align-items:start;
}
.article-body{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:44px 48px;font-size:17px;line-height:1.9;color:#2A2545;
  overflow-wrap:break-word;
}
.article-body>*+*{margin-top:1.2em}
.article-body h2{
  font-size:clamp(20px,2.4vw,26px);line-height:1.4;font-weight:800;margin-top:40px;
  position:relative;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:4px;border-radius:4px;background:var(--grad-brand);
}
.article-body h3{font-size:19px;font-weight:700;margin-top:32px;line-height:1.5}
.article-body h4{font-size:17px;font-weight:700;margin-top:24px}
.article-body p{margin-top:1.2em}
.article-body a{border-bottom:1px solid rgba(122,91,255,.4)}
.article-body img{border-radius:var(--r-md);box-shadow:var(--sh-1);margin:1.6em auto}
.article-body blockquote{
  background:#F5F1FF;border-left:3px solid var(--brand-500);border-radius:var(--r-sm);
  padding:16px 22px;color:var(--ink-600);margin:1.6em 0;
}
.article-body blockquote p{margin:0}
.article-body ul{list-style:none;padding-left:0;margin:1.2em 0}
.article-body ul li{position:relative;padding-left:22px;margin:9px 0}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;border-radius:50%;
  background:var(--brand-500);
}
.article-body ol{padding-left:22px;margin:1.2em 0}
.article-body ol li{margin:9px 0;padding-left:4px}
.article-body ol li::marker{color:var(--brand-600);font-weight:700}
.article-body table{
  display:block;width:100%;overflow-x:auto;border-collapse:collapse;font-size:15px;
  border:1px solid var(--line);border-radius:var(--r-sm);
}
.article-body th{background:#F1EDFF;text-align:left;padding:12px 16px;font-weight:700;color:var(--ink-900);white-space:nowrap}
.article-body td{padding:12px 16px;border-top:1px solid var(--line);color:var(--ink-600)}
.article-body code{background:#F1EDFF;color:var(--brand-600);padding:2px 7px;border-radius:6px;font-size:.92em}
.article-body pre{
  background:var(--bg-deep);color:#EDEAFF;padding:18px 22px;border-radius:var(--r-md);
  overflow-x:auto;font-size:14px;line-height:1.7;
}
.article-body pre code{background:none;color:inherit;padding:0}

.tip-card{
  display:flex;gap:14px;align-items:flex-start;
  background:linear-gradient(135deg,rgba(122,91,255,.10),rgba(16,200,168,.10));
  border:1px solid rgba(122,91,255,.18);border-radius:var(--r-md);
  padding:18px 22px;margin:1.8em 0;
}
.tip-card .ico{
  flex:0 0 auto;width:34px;height:34px;border-radius:12px;background:#fff;box-shadow:var(--sh-1);
  display:flex;align-items:center;justify-content:center;
}
.tip-card .ico svg{width:18px;height:18px;fill:none;stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.tip-card strong{display:block;font-size:15px;color:var(--ink-900);margin-bottom:2px}
.tip-card span{font-size:14px;color:var(--ink-600);line-height:1.8}

.empty-state{
  text-align:center;padding:56px 24px;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);
}
.empty-state .ico-lg{
  width:64px;height:64px;border-radius:20px;background:var(--grad-soft);margin:0 auto 18px;
  display:flex;align-items:center;justify-content:center;
}
.empty-state .ico-lg svg{width:28px;height:28px;fill:none;stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.empty-state h2{font-size:22px;margin-bottom:8px}
.empty-state p{color:var(--ink-600);font-size:15px;margin-bottom:22px}

/* ---------- sidebar ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-1);padding:24px;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.side-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.side-title{font-size:15px;font-weight:800;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-title .dott{width:8px;height:8px;border-radius:50%;background:var(--grad-brand)}
.side-list a{
  display:flex;align-items:center;justify-content:space-between;
  font-size:14px;color:var(--ink-600);padding:10px 0;border-bottom:1px dashed var(--line);
  transition:color .2s ease,transform .2s ease;
}
.side-list a:last-child{border-bottom:none}
.side-list a:hover{color:var(--brand-600);transform:translateX(3px)}
.side-list a svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.side-note{font-size:14px;color:var(--ink-600);line-height:1.8}
.side-note b{color:var(--ink-900)}

/* ---------- tags / actions ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;align-items:center}
.tag-row .label{font-size:14px;color:var(--ink-300);font-weight:600}
.tag{
  display:inline-flex;align-items:center;padding:7px 16px;border-radius:var(--r-pill);
  background:#F4F1FF;color:var(--brand-600);font-size:13px;font-weight:600;
  border:1px solid transparent;transition:border-color .2s ease,background .2s ease,transform .2s ease;
}
.tag:hover{border-color:rgba(122,91,255,.35);background:#EFEAFF;transform:translateY(-2px)}
.action-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- related ---------- */
.section{padding:var(--sec-y) 0}
.section-soft{background:linear-gradient(180deg,rgba(122,91,255,.06),rgba(122,91,255,0) 70%)}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:44px}
.sec-head h2{font-size:clamp(24px,2.8vw,36px);line-height:1.25}
.sec-head p{color:var(--ink-600);font-size:15px;margin-top:10px;max-width:620px}
.sec-head .more{font-size:15px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.sec-head .more svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rel-card{
  display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.rel-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.rel-card .thumb{aspect-ratio:16/9;overflow:hidden;background:var(--grad-soft)}
.rel-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.rel-card:hover .thumb img{transform:scale(1.04)}
.rel-card .body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1}
.rel-card h3{
  font-size:17px;line-height:1.5;font-weight:700;display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.rel-card p{
  font-size:14px;color:var(--ink-600);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-300)}
.rel-card .foot .go{color:var(--brand-600);font-weight:700;display:inline-flex;align-items:center;gap:5px}
.rel-card .foot .go svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,380px) minmax(0,1fr);gap:48px;align-items:start}
.faq-wrap h2{font-size:clamp(24px,2.8vw,34px);line-height:1.28}
.faq-wrap .lead{color:var(--ink-600);font-size:15px;margin-top:14px}
.faq-acc .accordion-item{
  background:var(--bg-card);border:1px solid var(--line)!important;border-radius:var(--r-md)!important;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--sh-1);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--ink-900);font-size:16px;font-weight:700;line-height:1.6;
  padding:18px 22px;box-shadow:none!important;border-radius:0!important;
}
.faq-acc .accordion-button:not(.collapsed){background:var(--grad-soft);color:var(--brand-600)}
.faq-acc .accordion-button:focus{box-shadow:none!important}
.faq-acc .accordion-button::after{
  content:"";width:16px;height:16px;flex:0 0 auto;margin-left:16px;
  background-image:linear-gradient(var(--brand-600),var(--brand-600)),linear-gradient(var(--brand-600),var(--brand-600));
  background-size:100% 2px,2px 100%;background-position:center;background-repeat:no-repeat;
  transition:transform .26s ease;border-radius:2px;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(45deg)}
.faq-acc .accordion-body{padding:4px 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-600);background:#fff}

/* ---------- CTA ---------- */
.cta-block{
  background:var(--bg-deep);border-radius:var(--r-xl);padding:72px 56px;position:relative;overflow:hidden;
  text-align:center;box-shadow:var(--sh-3);
}
.cta-block::before{
  content:"";position:absolute;left:-80px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(142,91,255,.42),rgba(142,91,255,0) 70%);filter:blur(40px);
}
.cta-block::after{
  content:"";position:absolute;right:-100px;bottom:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,122,69,.32),rgba(255,122,69,0) 70%);filter:blur(40px);
}
.cta-block .inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-block h2{color:#fff;font-size:clamp(24px,2.8vw,36px);line-height:1.3}
.cta-block p{color:rgba(255,255,255,.72);font-size:15px;margin-top:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;justify-content:center;margin-top:32px}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);color:#fff;margin-top:var(--sec-y);
  border-top:4px solid transparent;
  border-image:var(--grad-brand) 1;
  position:relative;
}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding:72px 0 40px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.5)}
.footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:360px}
.footer-title{font-size:15px;font-weight:700;color:rgba(255,255,255,.9);margin-bottom:16px}
.footer-link{
  display:block;font-size:14px;line-height:1.9;color:rgba(255,255,255,.65);
  padding:4px 0;transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--brand-300);transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.65)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 32px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec-y:80px}
  .article-layout{grid-template-columns:minmax(0,1fr) 280px;gap:36px}
  .article-body{padding:38px 36px}
}
@media (max-width:991px){
  :root{--sec-y:72px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .article-layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static}
  .faq-wrap{grid-template-columns:minmax(0,1fr);gap:28px}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 32px}
  .cta-block{padding:56px 32px}
}
@media (max-width:767px){
  :root{--sec-y:56px}
  .container{padding:0 16px}
  body{font-size:15px}
  .article-body{padding:26px 20px;font-size:16px;border-radius:var(--r-md)}
  .article-head h1{font-size:clamp(24px,6vw,30px)}
  .figure-wrap{border-radius:var(--r-lg)}
  .rel-grid{grid-template-columns:minmax(0,1fr)}
  .cta-actions{flex-direction:column}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .action-row .btn-main,.action-row .btn-outline{width:100%}
  .crumb .current{max-width:48vw}
}
@media (max-width:575px){
  body{font-size:14.5px}
  .brand-text{font-size:16px}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .cta-block{padding:42px 22px;border-radius:var(--r-lg)}
  .sec-head{margin-bottom:28px}
  .side-card{padding:20px}
}

/* roulang page: category2 */
:root{
  --brand-600:#5A34E8;
  --brand-500:#7A5BFF;
  --brand-300:#B8A6FF;
  --accent-500:#FF7A45;
  --mint-500:#10C8A8;
  --ink-900:#1A1633;
  --ink-600:#5D5A7A;
  --ink-300:#9A97B0;
  --bg-page:#F7F5FF;
  --bg-card:#FFFFFF;
  --bg-deep:#14102B;
  --line:#E7E3F8;
  --grad-brand:linear-gradient(135deg,#4B2BE0 0%,#8E5BFF 52%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,rgba(122,91,255,.14),rgba(255,122,69,.10));
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,22,51,.05);
  --sh-2:0 12px 32px rgba(26,22,51,.08);
  --sh-3:0 24px 60px rgba(74,43,224,.18);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg-page);
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:800}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.8vw,36px);line-height:1.25;font-weight:800}
h3{font-size:20px;line-height:1.4;font-weight:700}
h4{font-size:17px;line-height:1.5;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(122,91,255,.35);outline-offset:2px;border-radius:var(--r-xs)}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:48px}
.section-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:1px;font-weight:700;color:var(--brand-600);
  background:var(--grad-soft);border-radius:var(--r-pill);
  padding:6px 16px;margin-bottom:16px;
}
.section-head p{color:var(--ink-600);font-size:16px;margin-top:12px;max-width:720px}
.section-head.split{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.link-more{font-size:15px;font-weight:700;display:inline-flex;align-items:center;gap:8px;white-space:nowrap}
.link-more i{font-size:12px;transition:transform .2s ease}
.link-more:hover i{transform:translateX(4px)}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(247,245,255,.86);
  border-bottom:1px solid transparent;
  transition:background .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.site-header.scrolled{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  box-shadow:var(--sh-2);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:76px;transition:height .25s ease;
}
.site-header.scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  background:var(--grad-brand);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--sh-3);flex:0 0 auto;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.85;stroke-linecap:round;stroke-linejoin:round}
.brand-text{
  font-size:17px;font-weight:800;letter-spacing:-.2px;color:var(--ink-900);
  display:flex;flex-direction:column;line-height:1.15;
}
.brand-text small{font-size:10px;letter-spacing:2px;font-weight:600;color:var(--ink-300)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-flex;align-items:center;
  padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-600);
  transition:background .2s ease,color .2s ease;
  position:relative;
}
.nav-link:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-link.active{background:var(--grad-soft);color:var(--brand-600)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:var(--grad-brand);
}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;border-radius:var(--r-pill);
  background:var(--grad-brand);background-size:160% 160%;background-position:0% 50%;
  color:#fff;font-size:15px;font-weight:700;border:none;cursor:pointer;
  box-shadow:var(--sh-3);
  transition:transform .2s ease,box-shadow .25s ease,background-position .35s ease;
}
.btn-main:hover,.btn-main:focus{color:#fff;transform:translateY(-2px);background-position:100% 50%;box-shadow:0 28px 60px rgba(74,43,224,.28)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  background:#fff;border:1.5px solid var(--brand-500);color:var(--brand-600);
  font-size:15px;font-weight:700;cursor:pointer;
  transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease;
}
.btn-ghost:hover{background:#F1EDFF;border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0) scale(.99)}
.btn-quiet{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1.5px solid rgba(255,255,255,.6);color:#fff;
  font-size:15px;font-weight:700;cursor:pointer;transition:background .2s ease,color .2s ease,transform .2s ease;
}
.btn-quiet:hover{background:#fff;color:var(--ink-900);transform:translateY(-2px)}
.nav-cta{padding:11px 22px;font-size:14px;box-shadow:0 10px 26px rgba(74,43,224,.22)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  background:#fff;border:1px solid var(--line);cursor:pointer;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .24s ease,opacity .24s ease}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Page hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:64px 0 72px}
.page-hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.page-hero .hero-veil{
  position:absolute;inset:0;z-index:1;
  background:linear-gradient(120deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.88) 46%,rgba(122,91,255,.20) 100%);
}
.page-hero .hero-inner{position:relative;z-index:2;max-width:900px}
.breadcrumb-bar{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ink-300);margin-bottom:24px;flex-wrap:wrap}
.breadcrumb-bar a{color:var(--ink-600);font-weight:600}
.breadcrumb-bar a:hover{color:var(--brand-600)}
.breadcrumb-bar .sep{color:var(--brand-300)}
.breadcrumb-bar .current{color:var(--brand-600);font-weight:700}
.page-hero h1{margin-bottom:20px;max-width:820px}
.page-hero .lead{font-size:17px;line-height:1.8;color:var(--ink-600);max-width:680px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);box-shadow:var(--sh-1);
  font-size:14px;font-weight:600;color:var(--ink-600);
}
.tag-pill i{color:var(--brand-500);font-size:13px}

/* ---------- Badge strip ---------- */
.badge-strip{background:linear-gradient(135deg,rgba(122,91,255,.10),rgba(255,122,69,.07));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.badge-strip .strip-inner{display:grid;grid-template-columns:repeat(4,1fr)}
.strip-cell{padding:32px 20px;text-align:center;position:relative}
.strip-cell + .strip-cell::before{content:"";position:absolute;left:0;top:24%;height:52%;width:1px;background:var(--line)}
.strip-num{
  font-size:clamp(26px,3vw,34px);font-weight:800;letter-spacing:-.5px;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.strip-label{font-size:14px;color:var(--ink-600);margin-top:6px}

/* ---------- Split rows ---------- */
.split-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split-row + .split-row{margin-top:80px}
.split-row.reverse .split-media{order:2}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);border:1px solid rgba(26,22,51,.06);
  box-shadow:var(--sh-2);
}
.split-media .float-badge{
  position:absolute;right:-12px;bottom:-16px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
  padding:14px 20px;box-shadow:var(--sh-2);
}
.float-badge .fb-num{font-size:22px;font-weight:800;color:var(--brand-600);font-variant-numeric:tabular-nums;line-height:1.2}
.float-badge .fb-label{font-size:13px;color:var(--ink-300)}
.split-body .scenario-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;color:var(--mint-500);
  background:rgba(16,200,168,.10);border-radius:var(--r-pill);
  padding:6px 14px;margin-bottom:18px;
}
.split-body h3{font-size:clamp(21px,2.2vw,26px);margin-bottom:16px}
.split-body p{color:var(--ink-600);margin-bottom:24px}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--ink-600);padding:8px 0}
.check-list li i{color:var(--mint-500);font-size:15px;margin-top:5px;flex:0 0 auto}

/* ---------- Steps ---------- */
.steps-wrap{background:#fff;border:1px solid var(--line);border-radius:var(--r-xl);padding:48px 40px;box-shadow:var(--sh-1)}
.step-track{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative;margin-top:8px}
.step-track::before{
  content:"";position:absolute;left:8%;right:8%;top:22px;height:2px;background:var(--line);z-index:0;
}
.step-item{position:relative;z-index:1;text-align:center;padding:0 16px}
.step-dot{
  width:46px;height:46px;border-radius:50%;margin:0 auto 18px;
  background:var(--grad-brand);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 12px 26px rgba(74,43,224,.24);font-variant-numeric:tabular-nums;
}
.step-item h4{font-size:16px;font-weight:700;margin-bottom:8px}
.step-item p{font-size:14px;color:var(--ink-600);line-height:1.7}

/* ---------- FAQ ---------- */
.faq-accordion .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;background:#fff;box-shadow:var(--sh-1);
}
.faq-accordion .accordion-item:last-child{margin-bottom:0}
.faq-accordion .accordion-header{margin:0}
.faq-accordion .accordion-button{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  width:100%;padding:20px 24px;background:#fff;border:none;
  font-size:16px;font-weight:700;color:var(--ink-900);text-align:left;
  box-shadow:none;transition:background .22s ease,color .22s ease;
}
.faq-accordion .accordion-button::after{display:none}
.faq-accordion .accordion-button:not(.collapsed){
  background:var(--grad-soft);color:var(--brand-600);
  box-shadow:inset 0 -1px 0 var(--line);
}
.faq-accordion .accordion-button:focus{box-shadow:none;outline:3px solid rgba(122,91,255,.35);outline-offset:-3px}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-600);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform .24s ease,opacity .24s ease;
}
.faq-icon::before{width:14px;height:2px}
.faq-icon::after{width:2px;height:14px}
.accordion-button:not(.collapsed) .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.accordion-button:not(.collapsed) .faq-icon::before{transform:translate(-50%,-50%) rotate(45deg)}
.accordion-button:not(.collapsed) .faq-icon::after{transform:translate(-50%,-50%) rotate(45deg);opacity:1}
.faq-accordion .accordion-body{padding:22px 24px 26px;font-size:15px;line-height:1.8;color:var(--ink-600)}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--bg-deep);border-radius:var(--r-xl);
  padding:72px 56px;position:relative;overflow:hidden;text-align:center;
}
.cta-band::before{
  content:"";position:absolute;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,91,255,.38) 0%,rgba(122,91,255,0) 70%);
  top:-220px;right:-140px;filter:blur(20px);
}
.cta-band h2{color:#fff;position:relative;z-index:1}
.cta-band p{color:rgba(255,255,255,.74);margin:18px auto 0;max-width:620px;font-size:16px;position:relative;z-index:1}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:34px;position:relative;z-index:1}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-deep);color:#fff;position:relative;margin-top:96px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:48px;padding:72px 0 48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.footer-brand .brand-mark{box-shadow:none}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.45)}
.footer-desc{font-size:14px;line-height:1.9;color:rgba(255,255,255,.65);max-width:340px}
.footer-title{font-size:15px;font-weight:700;color:rgba(255,255,255,.92);margin-bottom:18px}
.footer-link{display:block;font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);padding:5px 0;transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:var(--brand-300);transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:2;color:rgba(255,255,255,.65)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:24px 0 32px;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- Responsive ---------- */
@media (max-width:1199px){
  .split-row{gap:40px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:36px}
}
@media (max-width:991px){
  .container{padding:0 20px}
  .section{padding:72px 0}
  .section-tight{padding:56px 0}
  .nav-toggle{display:flex}
  .nav-links{
    position:fixed;top:76px;left:16px;right:16px;
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-radius:var(--r-lg);
    box-shadow:var(--sh-3);padding:16px;
    max-height:calc(100vh - 110px);overflow-y:auto;
    display:none;
  }
  .nav-links.open{display:flex}
  .nav-link{padding:14px 16px;line-height:52px;border-radius:var(--r-sm)}
  .nav-link.active::after{display:none}
  .nav-cta{margin-top:8px;width:100%;padding:15px 22px;line-height:1.4}
  .split-row{grid-template-columns:1fr;gap:32px}
  .split-row.reverse .split-media{order:0}
  .split-media .float-badge{right:12px;bottom:-14px}
  .step-track{grid-template-columns:1fr 1fr;row-gap:36px}
  .step-track::before{display:none}
  .cta-band{padding:56px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:56px 0 36px}
  .badge-strip .strip-inner{grid-template-columns:1fr 1fr}
  .strip-cell:nth-child(3)::before{display:none}
}
@media (max-width:767px){
  .page-hero{padding:40px 0 48px}
  .page-hero .lead{font-size:15px}
  .split-row + .split-row{margin-top:56px}
  .steps-wrap{padding:32px 20px}
  .step-track{grid-template-columns:1fr;row-gap:28px}
  .step-item{padding:0}
  .cta-band{padding:44px 22px;border-radius:var(--r-lg)}
  .footer-grid{grid-template-columns:1fr;gap:28px}
}
@media (max-width:575px){
  .container{padding:0 16px}
  body{font-size:15px;line-height:1.8}
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .section-head{margin-bottom:36px}
  .brand-text{font-size:15px}
  .brand-mark{width:38px;height:38px}
  .header-inner{height:68px}
  .badge-strip .strip-inner{grid-template-columns:1fr}
  .strip-cell + .strip-cell::before{display:none}
  .strip-cell{border-top:1px solid var(--line);padding:24px 16px}
  .split-media img{aspect-ratio:16/11}
  .float-badge{padding:10px 14px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root{
  --brand-600:#5A34E8;
  --brand-500:#7A5BFF;
  --brand-300:#B8A6FF;
  --accent-500:#FF7A45;
  --mint-500:#10C8A8;
  --ink-900:#1A1633;
  --ink-600:#5D5A7A;
  --ink-300:#9A97B0;
  --bg-page:#F7F5FF;
  --bg-card:#FFFFFF;
  --bg-deep:#14102B;
  --line:#E7E3F8;
  --grad-brand:linear-gradient(135deg,#4B2BE0 0%,#8E5BFF 52%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,rgba(122,91,255,.14),rgba(255,122,69,.10));
  --r-xs:8px;
  --r-sm:12px;
  --r-md:16px;
  --r-lg:24px;
  --r-xl:32px;
  --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,22,51,.05);
  --sh-2:0 12px 32px rgba(26,22,51,.08);
  --sh-3:0 24px 60px rgba(74,43,224,.18);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-900);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4,p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid rgba(122,91,255,.35);outline-offset:2px;border-radius:6px}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,245,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:background .28s ease,box-shadow .28s ease,border-color .28s ease;
}
.site-header.is-scrolled{
  background:var(--bg-card);
  box-shadow:var(--sh-2);
  border-bottom-color:var(--line);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:20px 0;
  transition:padding .28s ease;
}
.site-header.is-scrolled .header-inner{padding:12px 0}

.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  background:var(--grad-brand);
  display:grid;place-items:center;
  box-shadow:0 8px 20px rgba(90,52,232,.28);
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.brand-text{
  display:flex;flex-direction:column;
  font-size:17px;font-weight:800;letter-spacing:-.2px;
  color:var(--ink-900);line-height:1.25;
}
.brand-text small{
  font-size:10px;font-weight:600;letter-spacing:2px;
  color:var(--ink-300);
}

.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-block;
  padding:10px 14px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;
  color:var(--ink-600);
  position:relative;
  transition:background .2s ease,color .2s ease;
}
.nav-link:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-link.active{
  background:var(--grad-soft);
  color:var(--brand-600);
}
.nav-link.active::after{
  content:"";
  position:absolute;
  left:50%;bottom:3px;
  transform:translateX(-50%);
  width:20px;height:3px;border-radius:3px;
  background:var(--grad-brand);
}
.nav-cta{
  margin-left:10px;
  padding:12px 24px !important;
  font-size:15px;
  border:none;
}

.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:14px;
  border:1px solid var(--line);
  background:#fff;
  position:relative;
  cursor:pointer;
  padding:0;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-300);box-shadow:var(--sh-1)}
.nav-toggle span{
  position:absolute;left:12px;
  width:20px;height:2px;border-radius:2px;
  background:var(--ink-900);
  transition:transform .24s ease,opacity .24s ease;
}
.nav-toggle span:nth-child(1){top:15px}
.nav-toggle span:nth-child(2){top:21px}
.nav-toggle span:nth-child(3){top:27px}
.site-header.is-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header.is-open .nav-toggle span:nth-child(2){opacity:0}
.site-header.is-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  background:var(--grad-brand);
  background-size:160% 160%;
  background-position:0% 50%;
  color:#fff !important;
  font-size:15px;font-weight:700;
  border:none;
  box-shadow:var(--sh-3);
  transition:transform .22s ease,box-shadow .22s ease,background-position .4s ease;
  cursor:pointer;
}
.btn-main:hover{transform:translateY(-2px);background-position:100% 50%;box-shadow:0 28px 64px rgba(74,43,224,.26)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-sub{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1.5px solid var(--brand-500);
  color:var(--brand-600) !important;
  font-size:15px;font-weight:700;
  transition:background .22s ease,border-color .22s ease,transform .22s ease;
  cursor:pointer;
}
.btn-sub:hover{background:#F1EDFF;border-color:var(--brand-600);transform:translateY(-2px)}
.btn-sub:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;
  border-radius:var(--r-pill);
  background:transparent;
  border:1.5px solid rgba(255,255,255,.65);
  color:#fff !important;
  font-size:15px;font-weight:700;
  transition:background .22s ease,color .22s ease,transform .22s ease;
  cursor:pointer;
}
.btn-ghost:hover{background:#fff;color:var(--ink-900) !important;transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;padding:64px 0 76px;background:var(--bg-page)}
.page-hero .hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  opacity:.55;
}
.page-hero .hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(255,255,255,.94) 0%,rgba(247,245,255,.90) 45%,rgba(247,245,255,.80) 100%);
}
.page-hero .hero-glow{
  position:absolute;top:-140px;right:-120px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,91,255,.16),rgba(122,91,255,0) 70%);
  filter:blur(20px);
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}

.breadcrumb-row{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:13px;color:var(--ink-300);
  margin-bottom:24px;
}
.breadcrumb-row a{color:var(--ink-600);font-weight:600}
.breadcrumb-row a:hover{color:var(--brand-600)}
.breadcrumb-row .sep{color:var(--ink-300)}
.breadcrumb-row .current{color:var(--brand-600);font-weight:700}

.hero-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;
  border-radius:var(--r-pill);
  background:var(--grad-soft);
  border:1px solid rgba(122,91,255,.22);
  font-size:13px;font-weight:700;color:var(--brand-600);
  margin-bottom:20px;
}
.hero-pill::before{
  content:"";width:8px;height:8px;border-radius:50%;
  background:var(--grad-brand);
}
.hero-title{
  font-size:clamp(30px,4.4vw,52px);
  line-height:1.15;
  font-weight:800;
  letter-spacing:-.5px;
  max-width:820px;
}
.hero-lead{
  margin-top:20px;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-600);
  max-width:680px;
}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:12px;
  margin-top:28px;
}
.hero-tags span{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 16px;
  border-radius:var(--r-pill);
  background:#fff;
  border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--ink-600);
  box-shadow:var(--sh-1);
}
.hero-tags svg{width:15px;height:15px;fill:none;stroke:var(--mint-500);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-soft{background:linear-gradient(180deg,rgba(122,91,255,.05),rgba(122,91,255,0) 70%)}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:44px;flex-wrap:wrap;
}
.section-head h2{
  font-size:clamp(24px,2.8vw,36px);
  line-height:1.25;
  font-weight:800;
  letter-spacing:-.3px;
}
.section-head p{
  margin-top:12px;
  font-size:15px;color:var(--ink-600);max-width:640px;
}
.section-link{
  font-size:15px;font-weight:700;color:var(--brand-600);
  display:inline-flex;align-items:center;gap:6px;
}
.section-link:hover{gap:10px}

/* ---------- entry cards ---------- */
.entry-card{
  height:100%;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:26px;
  display:flex;flex-direction:column;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.entry-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--sh-2);
  border-color:rgba(122,91,255,.35);
}
.icon-pill{
  width:46px;height:46px;border-radius:14px;
  background:var(--grad-soft);
  display:grid;place-items:center;
  color:var(--brand-600);
  margin-bottom:18px;
}
.icon-pill svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.entry-card h3{
  font-size:18px;font-weight:700;line-height:1.45;
  margin-bottom:10px;
}
.entry-card p{
  font-size:14px;line-height:1.75;color:var(--ink-600);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.entry-card .card-foot{margin-top:auto;padding-top:20px}

/* ---------- check rows ---------- */
.check-list{display:flex;flex-direction:column;gap:16px}
.check-row{
  display:flex;align-items:center;gap:22px;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:24px 28px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.check-row:hover{transform:translateX(4px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.check-index{
  flex-shrink:0;
  width:52px;height:52px;border-radius:16px;
  background:var(--grad-soft);
  display:grid;place-items:center;
  font-size:17px;font-weight:800;
  color:var(--brand-600);
  font-variant-numeric:tabular-nums;
}
.check-body{flex:1;min-width:0}
.check-body h3{font-size:17px;font-weight:700;margin-bottom:6px}
.check-body p{font-size:14px;color:var(--ink-600);line-height:1.75}
.check-arrow{
  flex-shrink:0;
  width:38px;height:38px;border-radius:50%;
  display:grid;place-items:center;
  color:var(--brand-600);
  background:#fff;
  border:1px solid var(--line);
  transition:background .22s ease,color .22s ease;
}
.check-arrow svg{width:17px;height:17px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
.check-row:hover .check-arrow{background:var(--grad-brand);color:#fff;border-color:transparent}

/* ---------- stat bar ---------- */
.stat-bar{
  background:linear-gradient(135deg,rgba(122,91,255,.12),rgba(255,122,69,.08));
  border-top:1px solid rgba(122,91,255,.14);
  border-bottom:1px solid rgba(122,91,255,.14);
  padding:44px 0;
}
.stat-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
}
.stat-item{
  padding:6px 24px;
  border-right:1px solid rgba(26,22,51,.08);
}
.stat-item:last-child{border-right:none}
.stat-num{
  font-size:clamp(26px,3vw,34px);
  font-weight:800;
  line-height:1.2;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.stat-label{margin-top:6px;font-size:14px;color:var(--ink-600)}

/* ---------- feature split ---------- */
.split{
  display:grid;
  grid-template-columns:1.05fr 1fr;
  gap:48px;
  align-items:center;
}
.split-media{
  border-radius:var(--r-xl);
  overflow:hidden;
  border:1px solid rgba(26,22,51,.06);
  box-shadow:var(--sh-2);
}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover}
.split h2{
  font-size:clamp(24px,2.8vw,34px);
  line-height:1.3;font-weight:800;letter-spacing:-.3px;
  margin-bottom:16px;
}
.split > div > p{font-size:15px;color:var(--ink-600)}
.tick-list{margin-top:26px;display:flex;flex-direction:column;gap:14px}
.tick-list li{
  display:flex;gap:12px;
  font-size:15px;color:var(--ink-900);line-height:1.75;
}
.tick-list svg{
  flex-shrink:0;margin-top:5px;
  width:18px;height:18px;
  fill:none;stroke:var(--mint-500);stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;
}

/* ---------- Q & A two column ---------- */
.qa-card{
  height:100%;
  background:var(--bg-card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-1);
  padding:26px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.qa-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.qa-card h3{
  font-size:17px;font-weight:700;
  display:flex;gap:10px;align-items:flex-start;
  margin-bottom:12px;
}
.qa-card h3 .q-mark{
  flex-shrink:0;
  width:26px;height:26px;border-radius:9px;
  background:var(--grad-soft);
  color:var(--brand-600);
  font-size:13px;font-weight:800;
  display:grid;place-items:center;
}
.qa-card p{font-size:14px;color:var(--ink-600);line-height:1.8}

/* ---------- CTA ---------- */
.cta-box{
  position:relative;
  overflow:hidden;
  background:var(--bg-deep);
  border-radius:var(--r-xl);
  padding:72px 8%;
  text-align:center;
  box-shadow:var(--sh-3);
}
.cta-box::before{
  content:"";
  position:absolute;top:-180px;right:-140px;
  width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(122,91,255,.5),rgba(122,91,255,0) 68%);
}
.cta-box::after{
  content:"";
  position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--grad-brand);
}
.cta-box > *{position:relative;z-index:2}
.cta-box h2{
  color:#fff;
  font-size:clamp(24px,3vw,36px);
  font-weight:800;line-height:1.3;letter-spacing:-.3px;
}
.cta-box p{
  margin:18px auto 0;
  max-width:640px;
  color:rgba(255,255,255,.72);
  font-size:15px;line-height:1.85;
}
.cta-actions{
  margin-top:34px;
  display:flex;justify-content:center;flex-wrap:wrap;gap:16px;
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--bg-deep);
  color:#fff;
  margin-top:96px;
  position:relative;
}
.site-footer::before{
  content:"";
  position:absolute;top:0;left:0;right:0;height:4px;
  background:var(--grad-brand);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:40px;
  padding:72px 0 52px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:var(--grad-brand);
  display:grid;place-items:center;
}
.footer-brand .brand-mark svg{width:21px;height:21px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.footer-brand .brand-text{
  display:flex;flex-direction:column;
  font-size:16px;font-weight:800;color:#fff;line-height:1.25;
}
.footer-brand .brand-text small{font-size:10px;letter-spacing:2px;color:rgba(255,255,255,.42);font-weight:600}
.footer-desc{
  font-size:14px;line-height:1.85;
  color:rgba(255,255,255,.65);
  max-width:360px;
}
.footer-title{
  font-size:15px;font-weight:700;
  color:rgba(255,255,255,.92);
  margin-bottom:18px;
}
.footer-link{
  display:block;
  font-size:14px;line-height:1.8;
  color:rgba(255,255,255,.65);
  margin-bottom:10px;
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--brand-300);transform:translateX(2px)}
.footer-contact{
  font-size:14px;line-height:2;
  color:rgba(255,255,255,.65);
}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid rgba(255,255,255,.08);
  font-size:13px;
  color:rgba(255,255,255,.5);
}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  .split{gap:36px}
}
@media (max-width:991px){
  .section{padding:72px 0}
  .header-inner{padding:16px 0}
  .nav-toggle{display:block}
  .nav-links{
    position:absolute;
    top:100%;left:0;right:0;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    background:#fff;
    border-radius:0 0 24px 24px;
    box-shadow:var(--sh-3);
    padding:12px 16px 20px;
    display:none;
  }
  .site-header.is-open .nav-links{display:flex}
  .nav-link{
    line-height:28px;
    padding:12px 14px;
    border-radius:var(--r-sm);
    font-size:16px;
  }
  .nav-link.active::after{display:none}
  .nav-cta{
    margin:12px 0 0;
    width:100%;
    padding:15px 24px !important;
    text-align:center;
  }
  .page-hero{padding:44px 0 64px}
  .split{grid-template-columns:1fr}
  .split-media{order:2}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:24px 0}
  .stat-item{border-right:none;border-bottom:1px solid rgba(26,22,51,.08);padding:6px 12px 20px}
  .stat-item:nth-child(2n){border-bottom:1px solid rgba(26,22,51,.08)}
  .stat-item:nth-child(2n-1){border-right:1px solid rgba(26,22,51,.08)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none;padding-bottom:6px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:36px;padding:60px 0 40px}
  .footer-desc{max-width:none}
  .cta-box{padding:56px 28px}
  .site-footer{margin-top:72px}
}
@media (max-width:575px){
  body{font-size:15px}
  .container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .page-hero{padding:32px 0 52px}
  .hero-lead{font-size:15px}
  .section-head{margin-bottom:32px}
  .entry-card,.qa-card{padding:20px}
  .check-row{padding:20px;gap:14px;align-items:flex-start}
  .check-arrow{display:none}
  .stat-grid{grid-template-columns:1fr}
  .stat-item{border-right:none !important;border-bottom:1px solid rgba(26,22,51,.08) !important;padding:0 0 18px}
  .stat-item:last-child{border-bottom:none !important;padding-bottom:0}
  .cta-box{padding:44px 20px;border-radius:24px}
  .cta-actions .btn-main,.cta-actions .btn-ghost{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 32px}
  .footer-bottom{flex-direction:column;gap:8px}
  .site-footer{margin-top:56px}
}

/* roulang page: category3 */
:root{
  --brand-600:#5A34E8;
  --brand-500:#7A5BFF;
  --brand-300:#B8A6FF;
  --accent-500:#FF7A45;
  --mint-500:#10C8A8;
  --ink-900:#1A1633;
  --ink-600:#5D5A7A;
  --ink-300:#9A97B0;
  --bg-page:#F7F5FF;
  --bg-card:#FFFFFF;
  --bg-deep:#14102B;
  --line:#E7E3F8;
  --grad-brand:linear-gradient(135deg,#4B2BE0 0%,#8E5BFF 52%,#FF7A45 100%);
  --grad-soft:linear-gradient(135deg,rgba(122,91,255,.14),rgba(255,122,69,.10));
  --r-xs:8px; --r-sm:12px; --r-md:16px; --r-lg:24px; --r-xl:32px; --r-pill:999px;
  --sh-1:0 2px 8px rgba(26,22,51,.05);
  --sh-2:0 12px 32px rgba(26,22,51,.08);
  --sh-3:0 24px 60px rgba(74,43,224,.18);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px; line-height:1.85; color:var(--ink-900);
  background:var(--bg-page);
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-500)}
h1,h2,h3,h4{margin:0;font-weight:800;color:var(--ink-900);letter-spacing:-.2px}
h1{font-size:clamp(30px,4.4vw,52px);line-height:1.15;letter-spacing:-.5px}
h2{font-size:clamp(24px,2.8vw,36px);line-height:1.25}
h3{font-size:20px;line-height:1.4;font-weight:700}
h4{font-size:17px;line-height:1.5;font-weight:700}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
a:focus-visible,button:focus-visible,.nav-link:focus-visible{
  outline:3px solid rgba(122,91,255,.35);outline-offset:2px;border-radius:var(--r-pill);
}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.bg-soft{background:#F2EEFF;position:relative;overflow:hidden}
.bg-soft::after{
  content:"";position:absolute;top:-140px;right:-120px;width:520px;height:520px;
  background:radial-gradient(circle,rgba(122,91,255,.14),rgba(122,91,255,0) 70%);
  filter:blur(60px);pointer-events:none;
}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.sec-head p{color:var(--ink-600);font-size:15px;margin-top:12px;max-width:620px}
.sec-link{font-size:15px;font-weight:700;color:var(--brand-600);display:inline-flex;align-items:center;gap:6px}
.sec-link:hover{gap:10px;color:var(--brand-500)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:var(--r-pill);
  background:var(--grad-soft);border:1px solid var(--line);
  font-size:13px;font-weight:700;color:var(--brand-600);letter-spacing:.4px;
}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--mint-500)}

/* 导航 */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(255,255,255,.88);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,background .25s ease,border-color .25s ease;
}
.site-header.is-stuck{background:#fff;box-shadow:var(--sh-2);border-bottom-color:var(--line)}
.header-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:20px;height:76px;transition:height .25s ease}
.site-header.is-stuck .header-inner{height:64px}
.logo{display:inline-flex;align-items:center;gap:12px;color:var(--ink-900)}
.logo:hover{color:var(--ink-900)}
.brand-mark{
  width:40px;height:40px;border-radius:14px;background:var(--grad-brand);
  display:inline-flex;align-items:center;justify-content:center;box-shadow:0 8px 20px rgba(90,52,232,.28);
  flex:0 0 40px;
}
.brand-mark svg{width:22px;height:22px;fill:none;stroke:#fff;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.brand-text{display:flex;flex-direction:column;font-size:16px;font-weight:800;line-height:1.2;letter-spacing:-.2px}
.brand-text small{font-size:10px;font-weight:700;color:var(--ink-300);letter-spacing:1.6px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  display:inline-flex;align-items:center;padding:10px 14px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;color:var(--ink-600);transition:background .2s ease,color .2s ease;
  position:relative;
}
.nav-link:hover{background:#F1EDFF;color:var(--brand-600)}
.nav-link.active{background:var(--grad-soft);color:var(--brand-600)}
.nav-link.active::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:2px;
  width:6px;height:6px;border-radius:50%;background:var(--grad-brand);
}
.nav-cta{margin-left:10px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--r-sm);padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px;
  transition:box-shadow .2s ease,border-color .2s ease;
}
.nav-toggle:hover{border-color:var(--brand-300);box-shadow:var(--sh-1)}
.nav-toggle span{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink-900);transition:transform .24s ease,opacity .24s ease}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 按钮 */
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--grad-brand);background-size:180% 180%;background-position:0% 50%;
  color:#fff;border:0;border-radius:var(--r-pill);padding:14px 28px;
  font-size:15px;font-weight:700;box-shadow:var(--sh-3);
  transition:transform .22s ease,box-shadow .22s ease,background-position .35s ease,opacity .2s ease;
}
.btn-main:hover{color:#fff;transform:translateY(-2px);background-position:100% 50%;box-shadow:0 28px 62px rgba(74,43,224,.28)}
.btn-main:active{transform:translateY(0) scale(.99)}
.btn-sub{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:#fff;color:var(--brand-600);border:1.5px solid var(--brand-500);
  border-radius:var(--r-pill);padding:13px 26px;font-size:15px;font-weight:700;
  transition:background .2s ease,border-color .2s ease,transform .22s ease,color .2s ease;
}
.btn-sub:hover{background:#F1EDFF;border-color:var(--brand-600);color:var(--brand-600);transform:translateY(-2px)}
.btn-sub:active{transform:translateY(0) scale(.99)}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.62);
  border-radius:var(--r-pill);padding:13px 26px;font-size:15px;font-weight:700;
  transition:background .2s ease,color .2s ease,transform .22s ease;
}
.btn-ghost:hover{background:#fff;color:var(--bg-deep);transform:translateY(-2px)}
.nav-cta{padding:11px 22px;font-size:14px;box-shadow:0 10px 24px rgba(90,52,232,.26)}

/* 面包屑 */
.crumbs{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--ink-300);padding-top:24px}
.crumbs a{color:var(--ink-600);font-weight:600}
.crumbs a:hover{color:var(--brand-600)}
.crumbs .sep{color:var(--ink-300)}
.crumbs .now{color:var(--brand-600);font-weight:700}

/* Hero */
.cat-hero{position:relative;padding:40px 0 72px;background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.80) 46%,rgba(255,255,255,.62) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.hero-inner{max-width:820px;margin-top:22px}
.hero-inner h1{margin:20px 0 18px}
.hero-lead{font-size:17px;color:var(--ink-600);max-width:660px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{
  display:inline-flex;align-items:center;gap:7px;padding:8px 16px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;font-weight:700;color:var(--ink-600);box-shadow:var(--sh-1);
}
.tag i{width:7px;height:7px;border-radius:50%;background:var(--brand-500);display:inline-block}
.tag.mint i{background:var(--mint-500)}
.tag.orange i{background:var(--accent-500)}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}

/* 功能卡片网格 */
.feature-card{
  position:relative;height:100%;background:var(--bg-card);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.feature-card .media{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--grad-soft)}
.feature-card .media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.feature-card:hover .media img{transform:scale(1.04)}
.corner-badge{
  position:absolute;top:14px;left:14px;z-index:2;
  padding:6px 14px;border-radius:var(--r-pill);font-size:12px;font-weight:800;letter-spacing:.4px;
  background:rgba(255,255,255,.94);color:var(--brand-600);box-shadow:var(--sh-1);backdrop-filter:blur(6px);
}
.corner-badge.mint{color:#0B8F79}
.corner-badge.orange{color:#D2551F}
.feature-body{padding:24px 26px 28px}
.feature-body h3{margin-bottom:10px}
.feature-body p{font-size:15px;color:var(--ink-600)}
.feature-meta{display:flex;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--ink-300);font-weight:600}
.feature-meta .dot{width:5px;height:5px;border-radius:50%;background:var(--brand-300)}

/* 数据徽章条 */
.stat-strip{
  background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:36px 0;
}
.stat-row{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:6px 22px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:6px}
.stat-item:first-child{border-left:0;padding-left:0}
.stat-num{
  font-size:clamp(26px,3vw,34px);font-weight:800;line-height:1.1;
  font-variant-numeric:tabular-nums;
  background:var(--grad-brand);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{font-size:14px;color:var(--ink-600);font-weight:600}
.stat-hint{font-size:12.5px;color:var(--ink-300)}

/* 要点两列 */
.point-card{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 28px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.point-card:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.point-icon{
  width:44px;height:44px;border-radius:14px;background:var(--grad-soft);
  display:inline-flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.point-icon svg{width:22px;height:22px;fill:none;stroke:var(--brand-600);stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.point-card h3{margin-bottom:10px}
.point-card p{font-size:15px;color:var(--ink-600)}
.check-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.check-list li{position:relative;padding-left:28px;font-size:14.5px;color:var(--ink-600)}
.check-list li::before{
  content:"";position:absolute;left:0;top:6px;width:18px;height:18px;border-radius:50%;
  background:rgba(16,200,168,.14);
}
.check-list li::after{
  content:"";position:absolute;left:5.5px;top:11px;width:7px;height:4px;
  border-left:2px solid var(--mint-500);border-bottom:2px solid var(--mint-500);
  transform:rotate(-45deg);
}

/* 问答三栏 */
.qa-col{
  height:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--sh-1);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.qa-col:hover{transform:translateY(-6px);box-shadow:var(--sh-2);border-color:rgba(122,91,255,.35)}
.qa-col-head{display:flex;align-items:center;gap:10px;margin-bottom:20px}
.qa-col-head .bar{width:4px;height:22px;border-radius:4px;background:var(--grad-brand)}
.qa-col-head h3{font-size:18px}
.qa-item{padding:16px 0;border-top:1px dashed var(--line)}
.qa-item:first-of-type{border-top:0;padding-top:0}
.qa-item h4{margin-bottom:8px;color:var(--ink-900)}
.qa-item p{font-size:14.5px;color:var(--ink-600)}

/* CTA */
.cta-wrap{padding:0 0 96px}
.cta-box{
  position:relative;overflow:hidden;border-radius:var(--r-xl);background:var(--bg-deep);
  padding:72px 56px;text-align:center;
}
.cta-box::before{
  content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);
  width:780px;height:520px;
  background:radial-gradient(circle,rgba(122,91,255,.42),rgba(122,91,255,0) 68%);
  filter:blur(40px);
}
.cta-box::after{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-brand);
}
.cta-box > *{position:relative;z-index:2}
.cta-box h2{color:#fff}
.cta-box p{color:rgba(255,255,255,.72);margin:16px auto 0;max-width:640px;font-size:15.5px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap;margin-top:34px}

/* 页脚 */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.65);position:relative;padding-top:72px}
.site-footer::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--grad-brand)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-text{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.45)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px}
.footer-title{font-size:15px;font-weight:700;color:rgba(255,255,255,.92);margin-bottom:16px}
.footer-link{display:block;font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);padding:5px 0;transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:#B8A6FF;transform:translateX(2px)}
.footer-contact{font-size:14px;line-height:1.9;color:rgba(255,255,255,.65)}
.footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0 28px;
  font-size:13px;color:rgba(255,255,255,.5);
}

@media (max-width:1199.98px){
  .section{padding:80px 0}
}
@media (max-width:991.98px){
  .section{padding:72px 0}
  .nav-toggle{display:inline-flex}
  .nav-links{
    position:absolute;left:0;right:0;top:calc(100% + 10px);
    flex-direction:column;align-items:stretch;gap:4px;
    background:#fff;border-radius:0 0 var(--r-lg) var(--r-lg);
    box-shadow:var(--sh-3);padding:14px;display:none;
    border:1px solid var(--line);border-top:0;
  }
  .nav-links.is-open{display:flex}
  .nav-link{line-height:52px;padding:0 16px;border-radius:14px}
  .nav-link.active::after{display:none}
  .nav-cta{margin:10px 0 0;justify-content:center;width:100%}
  .cat-hero{padding:32px 0 56px}
  .cta-box{padding:56px 28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .point-card,.qa-col{padding:24px}
}
@media (max-width:767.98px){
  .section{padding:56px 0}
  .section-tight{padding:48px 0}
  .container{padding:0 16px}
  .stat-row{grid-template-columns:1fr 1fr;gap:22px 0}
  .stat-item{border-left:0;padding:0}
  .stat-item:nth-child(even){border-left:1px solid var(--line);padding-left:20px}
  .feature-body{padding:20px}
  .hero-lead{font-size:15.5px}
  .cta-wrap{padding-bottom:64px}
  .cta-box{border-radius:var(--r-lg)}
}
@media (max-width:575.98px){
  body{font-size:15px;line-height:1.8}
  h3{font-size:18px}
  .brand-text{font-size:14.5px}
  .brand-mark{width:36px;height:36px;flex:0 0 36px;border-radius:12px}
  .stat-row{grid-template-columns:1fr}
  .stat-item:nth-child(even){border-left:0;padding-left:0}
  .footer-grid{grid-template-columns:1fr}
  .hero-actions .btn-main,.hero-actions .btn-sub{width:100%}
  .cta-actions .btn-main,.cta-actions .btn-ghost,.cta-actions .btn-sub{width:100%}
}