/* roulang page: index */
:root{
  --brand:#FF6B2C;
  --brand-deep:#E24E0F;
  --brand-soft:#FFF1E8;
  --cyan:#14B8A6;
  --cyan-soft:#E6F8F5;
  --violet:#6C5CE7;
  --violet-soft:#EFEDFD;
  --bg-warm:#FFF8F3;
  --bg-gray:#F7F8FC;
  --card:#FFFFFF;
  --ink:#1F2430;
  --ink-2:#5B6472;
  --ink-3:#8A94A6;
  --line:#EDEFF5;
  --footer:#1E2430;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:12px;
  --sh:0 12px 32px rgba(31,36,48,.08);
  --sh-hover:0 18px 44px rgba(255,107,44,.16);
  --sh-nav:0 2px 12px rgba(31,36,48,.04);
  --grad:linear-gradient(135deg,#FF6B2C 0%,#FF9A62 52%,#6C5CE7 100%);
  --section-y:clamp(48px,7vw,92px);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg-warm);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--ink);text-decoration:none;transition:color .22s ease,opacity .22s ease;}
a:hover{color:var(--brand);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.3;letter-spacing:.2px;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,107,44,.45);outline-offset:2px;border-radius:6px;}
.container-xl{width:100%;max-width:1280px;margin:0 auto;padding-left:24px;padding-right:24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-nav);
}
.site-header .navbar{padding:12px 0;min-height:70px;}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:8px;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:var(--grad);
  display:flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;
  box-shadow:0 8px 20px rgba(255,107,44,.28);
  flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:800;color:var(--ink);letter-spacing:.3px;white-space:nowrap;}
.brand-text:hover{color:var(--brand);}
.navbar-toggler{
  border:1px solid var(--line);border-radius:12px;padding:9px 11px;background:#fff;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(255,107,44,.22);}
.menu-bar{display:block;width:20px;height:2px;border-radius:2px;background:var(--ink);margin:4px 0;}
.nav-links{gap:4px;}
.nav-links .nav-link{
  color:var(--ink-2);font-weight:600;font-size:16px;
  padding:9px 16px;border-radius:999px;
}
.nav-links .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links .nav-link.active{color:var(--brand-deep);background:var(--brand-soft);}
.nav-tools{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-gray);border:1px solid var(--line);
  border-radius:999px;padding:9px 16px;min-width:220px;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.search-box i{color:var(--ink-3);font-size:14px;}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;
  font-size:15px;color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,44,.16);background:#fff;}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--grad);color:#fff;font-weight:700;
  border:0;border-radius:999px;padding:11px 24px;font-size:15.5px;
  box-shadow:0 10px 24px rgba(255,107,44,.24);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,107,44,.32);filter:saturate(1.08);}
.btn-cta:active{transform:translateY(0);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;color:var(--ink);font-weight:700;
  border:1.5px solid var(--line);border-radius:999px;padding:11px 24px;font-size:15.5px;
  transition:all .22s ease;
}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-soft);transform:translateY(-2px);}
.btn-soft{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--cyan-soft);color:#0F8E82;font-weight:700;
  border:1.5px solid rgba(20,184,166,.24);border-radius:999px;padding:10px 22px;font-size:15px;
  transition:all .22s ease;
}
.btn-soft:hover{background:#D5F3EF;color:#0B726A;transform:translateY(-2px);}

/* ---------- hero ---------- */
.hero{
  position:relative;
  background:
    radial-gradient(620px 420px at 92% 8%,rgba(108,92,231,.14),transparent 62%),
    radial-gradient(560px 420px at 4% 92%,rgba(255,107,44,.16),transparent 60%),
    var(--bg-warm);
  padding:clamp(52px,7vw,104px) 0 clamp(48px,6vw,84px);
  overflow:hidden;
}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid rgba(255,107,44,.28);
  color:var(--brand-deep);font-weight:700;font-size:14px;
  border-radius:999px;padding:8px 18px;margin-bottom:22px;
  box-shadow:0 6px 18px rgba(255,107,44,.10);
}
.hero h1{
  font-size:clamp(2rem,4.6vw,3.4rem);
  line-height:1.22;
  margin-bottom:20px;
  letter-spacing:.4px;
}
.hero h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-sub{
  font-size:clamp(16px,1.5vw,18px);
  color:var(--ink-2);line-height:1.9;max-width:620px;
  margin-bottom:32px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;}
.hero-points li{display:flex;align-items:center;gap:9px;font-size:15px;color:var(--ink-2);font-weight:600;}
.hero-points i{color:var(--cyan);font-size:14px;}
.hero-visual{position:relative;}
.hero-shot{
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:0 26px 60px rgba(31,36,48,.16);
  border:6px solid #fff;
  background:#fff;
}
.hero-shot img{width:100%;height:400px;object-fit:cover;}
.float-card{
  position:absolute;background:#fff;border-radius:var(--r-md);
  box-shadow:0 16px 38px rgba(31,36,48,.14);
  padding:14px 18px;display:flex;align-items:center;gap:12px;
  border:1px solid var(--line);
}
.float-card .ico{
  width:38px;height:38px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:16px;color:#fff;background:var(--grad);flex:0 0 auto;
}
.float-card b{display:block;font-size:16px;line-height:1.3;}
.float-card span{font-size:13px;color:var(--ink-3);}
.float-a{left:-16px;bottom:34px;}
.float-b{right:-10px;top:26px;}
.float-b .ico{background:linear-gradient(135deg,#14B8A6,#6C5CE7);}

/* ---------- section base ---------- */
.section{padding:var(--section-y) 0;}
.section-gray{background:var(--bg-gray);}
.section-warm{background:var(--bg-warm);}
.sec-head{max-width:760px;margin-bottom:clamp(30px,4vw,52px);}
.sec-label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;font-weight:800;letter-spacing:1.4px;
  color:var(--brand-deep);text-transform:uppercase;
  background:var(--brand-soft);border-radius:999px;padding:7px 16px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:14px;}
.sec-head p{color:var(--ink-2);font-size:16.5px;line-height:1.9;}
.sec-head.center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- stat strip ---------- */
.stat-strip{
  background:#fff;border-radius:var(--r-lg);
  box-shadow:var(--sh);border:1px solid var(--line);
  padding:26px 8px;
  display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:-58px;position:relative;z-index:5;
}
.stat-item{text-align:center;padding:8px 16px;border-right:1px solid var(--line);}
.stat-item:last-child{border-right:0;}
.stat-item b{display:block;font-size:clamp(1.3rem,2.4vw,1.85rem);font-weight:800;line-height:1.25;}
.stat-item b i{font-size:.72em;color:var(--brand);margin-left:4px;}
.stat-item span{font-size:14px;color:var(--ink-3);}

/* ---------- carousel ---------- */
.shot-carousel .carousel-item{padding:6px 4px 18px;}
.shot-frame{
  border-radius:var(--r-lg);overflow:hidden;background:#fff;
  box-shadow:var(--sh);border:1px solid var(--line);
  transition:box-shadow .28s ease,transform .28s ease;
}
.shot-frame:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);}
.shot-frame img{width:100%;height:230px;object-fit:cover;}
.shot-frame .cap{padding:18px 20px;}
.shot-frame .cap h3{font-size:17px;margin-bottom:6px;}
.shot-frame .cap p{font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.shot-carousel .carousel-indicators{position:static;margin:14px 0 0;}
.shot-carousel .carousel-indicators [data-bs-target]{
  width:26px;height:6px;border-radius:999px;background:#DCE0EA;border:0;opacity:1;margin:0 5px;
  transition:all .25s ease;
}
.shot-carousel .carousel-indicators .active{background:var(--grad);width:40px;}
.shot-carousel .carousel-control-prev,
.shot-carousel .carousel-control-next{
  width:46px;height:46px;border-radius:50%;background:#fff;
  box-shadow:0 10px 26px rgba(31,36,48,.14);opacity:1;top:38%;
  border:1px solid var(--line);
}
.shot-carousel .carousel-control-prev{left:-10px;}
.shot-carousel .carousel-control-next{right:-10px;}
.shot-carousel .carousel-control-prev i,
.shot-carousel .carousel-control-next i{color:var(--ink);font-size:16px;transition:color .22s ease;}
.shot-carousel .carousel-control-prev:hover i,
.shot-carousel .carousel-control-next:hover i{color:var(--brand);}

/* ---------- requirement cards ---------- */
.req-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:28px 26px;height:100%;
  box-shadow:var(--sh);transition:box-shadow .28s ease,transform .28s ease;
}
.req-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);}
.req-card .top{display:flex;align-items:center;gap:12px;margin-bottom:20px;}
.req-card .top .ico{
  width:44px;height:44px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--brand-soft);color:var(--brand-deep);font-size:18px;
}
.req-card.win .top .ico{background:var(--brand-soft);color:var(--brand-deep);}
.req-card.mob .top .ico{background:var(--cyan-soft);color:#0F8E82;}
.req-card .top h3{font-size:18px;}
.req-list li{
  display:flex;justify-content:space-between;gap:16px;
  padding:11px 0;border-bottom:1px dashed var(--line);font-size:15px;
}
.req-list li:last-child{border-bottom:0;}
.req-list .k{color:var(--ink-3);}
.req-list .v{font-weight:700;color:var(--ink);text-align:right;}
.chip{
  display:inline-block;background:var(--bg-gray);color:var(--ink-2);
  border-radius:999px;padding:3px 12px;font-size:13.5px;font-weight:600;
}
.chip-brand{background:var(--brand-soft);color:var(--brand-deep);}
.chip-cyan{background:var(--cyan-soft);color:#0F8E82;}

/* ---------- review wall ---------- */
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px 24px;height:100%;box-shadow:var(--sh);
  transition:box-shadow .28s ease,transform .28s ease;
  display:flex;flex-direction:column;
}
.review-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);}
.review-head{display:flex;align-items:center;gap:13px;margin-bottom:14px;}
.avatar{
  width:46px;height:46px;border-radius:50%;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;color:#fff;font-size:17px;
}
.av-1{background:linear-gradient(135deg,#FF6B2C,#FF9A62);}
.av-2{background:linear-gradient(135deg,#14B8A6,#6C5CE7);}
.av-3{background:linear-gradient(135deg,#6C5CE7,#FF6B2C);}
.review-head b{display:block;font-size:16px;line-height:1.4;}
.review-head span{font-size:13px;color:var(--ink-3);}
.stars{color:#FFB020;font-size:13.5px;letter-spacing:2px;margin-bottom:10px;}
.review-card p{font-size:15.5px;color:var(--ink-2);line-height:1.85;flex:1;}
.review-meta{margin-top:16px;font-size:13px;color:var(--ink-3);}

/* ---------- news list ---------- */
.news-grid{display:grid;gap:22px;grid-template-columns:repeat(3,1fr);}
.news-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px 24px 22px;box-shadow:var(--sh);height:100%;
  display:flex;flex-direction:column;
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
}
.news-card:hover{box-shadow:var(--sh-hover);transform:translateY(-3px);border-color:rgba(255,107,44,.28);}
.news-card h3{font-size:17.5px;line-height:1.55;margin-bottom:12px;}
.news-card h3 a{color:var(--ink);}
.news-card h3 a:hover{color:var(--brand);}
.news-card .sum{font-size:15px;color:var(--ink-2);line-height:1.8;flex:1;}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px;font-size:13.5px;color:var(--ink-3);}
.news-foot .go{font-weight:700;color:var(--brand-deep);display:inline-flex;align-items:center;gap:6px;}
.news-foot .go:hover{gap:9px;}
.empty-state{
  background:#fff;border:1.5px dashed var(--line);border-radius:var(--r-lg);
  padding:56px 24px;text-align:center;color:var(--ink-2);
}
.empty-state i{font-size:34px;color:var(--brand);margin-bottom:14px;display:block;}
.empty-state p{font-size:16px;}

/* ---------- download band ---------- */
.dl-band{
  background:linear-gradient(140deg,#FFF3EA 0%,#F7F8FC 55%,#EFEDFD 100%);
  border-radius:28px;padding:clamp(32px,4.4vw,56px);
  border:1px solid var(--line);
}
.dl-title{font-size:clamp(1.4rem,2.6vw,1.95rem);margin-bottom:12px;}
.dl-desc{color:var(--ink-2);font-size:16.5px;line-height:1.9;margin-bottom:26px;}
.dl-btns{display:flex;flex-wrap:wrap;gap:14px;}
.qr-card{
  background:#fff;border-radius:var(--r-lg);padding:24px;text-align:center;
  border:1px solid var(--line);box-shadow:var(--sh);
}
.qr-card .qr{
  width:148px;height:148px;margin:0 auto 16px;border-radius:var(--r-md);
  background:
    repeating-linear-gradient(45deg,#1F2430 0 6px,#fff 6px 12px),
    #fff;
  border:8px solid #fff;box-shadow:0 8px 22px rgba(31,36,48,.12);
  display:flex;align-items:center;justify-content:center;
}
.qr-card .qr i{font-size:34px;color:#fff;background:var(--brand);border-radius:12px;padding:10px;}
.qr-card b{display:block;font-size:16px;margin-bottom:6px;}
.qr-card span{font-size:13.5px;color:var(--ink-3);line-height:1.7;display:block;}

/* ---------- faq ---------- */
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-md)!important;
  background:#fff;margin-bottom:14px;overflow:hidden;
  box-shadow:0 6px 18px rgba(31,36,48,.05);
}
.faq-acc .accordion-button{
  background:#fff;color:var(--ink);font-weight:700;font-size:16.5px;
  padding:20px 24px;box-shadow:none;border-radius:var(--r-md)!important;
}
.faq-acc .accordion-button:not(.collapsed){
  color:var(--brand-deep);background:var(--brand-soft);
}
.faq-acc .accordion-button:focus{box-shadow:0 0 0 3px rgba(255,107,44,.18);}
.faq-acc .accordion-button::after{
  background-image:none;
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  width:auto;height:auto;font-size:13px;color:var(--brand);
  transition:transform .28s ease;
}
.faq-acc .accordion-button:not(.collapsed)::after{transform:rotate(180deg);}
.faq-acc .accordion-body{
  padding:6px 24px 24px;color:var(--ink-2);font-size:15.8px;line-height:1.9;
  border-left:3px solid var(--brand);margin-left:24px;padding-left:18px;
}

/* ---------- final cta ---------- */
.final-cta{
  background:var(--grad);border-radius:28px;padding:clamp(34px,4.6vw,62px);
  color:#fff;position:relative;overflow:hidden;
}
.final-cta::after{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:rgba(255,255,255,.14);right:-110px;top:-130px;
}
.final-cta::before{
  content:"";position:absolute;width:200px;height:200px;border-radius:50%;
  background:rgba(255,255,255,.10);left:-70px;bottom:-90px;
}
.final-cta h2{font-size:clamp(1.5rem,3vw,2.15rem);margin-bottom:14px;position:relative;z-index:2;}
.final-cta p{color:rgba(255,255,255,.92);font-size:16.5px;line-height:1.9;max-width:660px;margin-bottom:26px;position:relative;z-index:2;}
.final-cta .btn-white{
  display:inline-flex;align-items:center;gap:9px;
  background:#fff;color:var(--brand-deep);font-weight:800;
  border-radius:999px;padding:13px 30px;font-size:16px;border:0;
  transition:transform .22s ease,box-shadow .22s ease;position:relative;z-index:2;
}
.final-cta .btn-white:hover{color:var(--brand-deep);transform:translateY(-2px);box-shadow:0 16px 34px rgba(0,0,0,.18);}
.final-cta .btn-line{
  display:inline-flex;align-items:center;gap:9px;
  background:transparent;color:#fff;font-weight:700;
  border:1.5px solid rgba(255,255,255,.7);border-radius:999px;padding:12px 28px;font-size:16px;
  transition:all .22s ease;position:relative;z-index:2;
}
.final-cta .btn-line:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- footer ---------- */
.site-footer{background:var(--footer);color:#C7CEDB;padding:clamp(46px,5vw,72px) 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px;padding-bottom:44px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.foot-brand .brand-text{color:#fff;font-size:18px;}
.foot-brand .brand-text:hover{color:var(--brand);}
.site-footer p{font-size:14.6px;line-height:1.9;color:#9AA4B5;}
.foot-title{color:#fff;font-size:15.5px;font-weight:800;margin-bottom:18px;letter-spacing:.5px;}
.foot-links li{margin-bottom:11px;}
.foot-links a{color:#9AA4B5;font-size:14.6px;display:inline-flex;align-items:center;gap:8px;}
.foot-links a:hover{color:var(--brand);}
.foot-links i{font-size:11px;color:var(--brand);}
.foot-note{
  background:rgba(255,255,255,.05);border-radius:var(--r-md);
  padding:16px 18px;font-size:14px;line-height:1.85;color:#9AA4B5;margin-top:6px;
}
.foot-note b{color:#fff;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;display:flex;flex-wrap:wrap;gap:12px;
  align-items:center;justify-content:space-between;
  font-size:13.8px;color:#8A94A6;
}
.foot-bottom a{color:#8A94A6;}
.foot-bottom a:hover{color:var(--brand);}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .foot-grid .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .site-header .navbar{padding:10px 0;}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);
    margin-top:12px;padding:16px;box-shadow:var(--sh);
  }
  .nav-links{gap:2px;margin-bottom:14px!important;}
  .nav-links .nav-link{padding:11px 14px;border-radius:var(--r-sm);}
  .nav-tools{flex-direction:column;align-items:stretch;gap:10px;}
  .search-box{min-width:0;width:100%;}
  .btn-cta{justify-content:center;width:100%;}
  .hero-shot img{height:320px;}
  .float-a{left:8px;bottom:-14px;}
  .float-b{right:6px;top:-12px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);padding:18px 6px;}
  .stat-item:nth-child(2){border-right:0;}
  .stat-item{padding:12px 10px;}
  .stat-item:nth-child(1),.stat-item:nth-child(2){border-bottom:1px solid var(--line);}
  .shot-carousel .carousel-control-prev{left:-4px;}
  .shot-carousel .carousel-control-next{right:-4px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-xl{padding-left:16px;padding-right:16px;}
  .news-grid{grid-template-columns:1fr;}
  .hero-points{gap:8px 18px;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-grid .foot-brand-col{grid-column:1 / -1;}
  .shot-frame img{height:200px;}
  .req-card{padding:24px 20px;}
  .review-card{padding:22px 20px;}
  .dl-band{border-radius:20px;}
  .final-cta{border-radius:20px;}
}
@media (max-width:575.98px){
  .hero{padding-top:44px;}
  .hero-cta{gap:10px;}
  .btn-cta,.btn-ghost,.btn-soft{width:100%;justify-content:center;}
  .hero-shot{border-width:4px;}
  .hero-shot img{height:230px;}
  .float-card{padding:11px 14px;}
  .float-card b{font-size:14.5px;}
  .float-card span{font-size:12px;}
  .stat-strip{grid-template-columns:repeat(2,1fr);}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
  .cta-actions{flex-direction:column;}
  .final-cta .btn-white,.final-cta .btn-line{width:100%;justify-content:center;}
}

/* roulang page: article */
:root{
  --primary:#FF6B2C;
  --primary-deep:#E24E0F;
  --primary-soft:#FFF1E8;
  --teal:#14B8A6;
  --teal-soft:#E6F8F5;
  --purple:#6C5CE7;
  --purple-soft:#EFEDFD;
  --bg-warm:#FFF8F3;
  --bg-gray:#F7F8FC;
  --card:#FFFFFF;
  --dark:#1E2430;
  --text:#1F2430;
  --text-2:#5B6472;
  --text-3:#8A94A6;
  --line:#EDEFF5;
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:14px;
  --shadow:0 12px 32px rgba(31,36,48,.08);
  --shadow-hover:0 18px 44px rgba(255,107,44,.16);
  --shadow-nav:0 2px 12px rgba(31,36,48,.04);
  --grad:linear-gradient(135deg,#FF6B2C 0%,#FF9A62 52%,#6C5CE7 100%);
  --grad-soft:linear-gradient(135deg,#FFF1E8 0%,#F3F0FE 100%);
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;font-family:var(--font);color:var(--text);background:var(--bg-warm);
  font-size:17px;line-height:1.8;font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--text);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;}
a:hover{color:var(--primary);}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid rgba(255,107,44,.45);outline-offset:2px;}
h1,h2,h3,h4{font-weight:800;line-height:1.35;color:var(--text);margin:0;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
.container-xl{width:100%;max-width:1280px;margin:0 auto;padding:0 24px;}
.section{padding:76px 0;}
.section-tight{padding:56px 0;}
.section-head{margin-bottom:38px;}
.section-head h2{font-size:clamp(1.5rem,3vw,2.25rem);letter-spacing:-.02em;}
.section-head p{color:var(--text-2);margin:12px 0 0;max-width:720px;font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:6px 14px;margin-bottom:16px;
}
.text-muted-2{color:var(--text-2);}
.text-muted-3{color:var(--text-3);}

/* ============ HEADER / NAV ============ */
.site-header{
  position:sticky;top:0;z-index:1030;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow-nav);
}
.site-header .navbar{padding:12px 0;align-items:center;}
.brand{display:flex;align-items:center;gap:10px;padding:0;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-size:18px;box-shadow:0 8px 18px rgba(255,107,44,.28);flex:0 0 auto;
}
.brand-text{font-size:19px;font-weight:800;letter-spacing:-.01em;color:var(--text);white-space:nowrap;}
.brand:hover .brand-text{color:var(--primary);}
.nav-links{gap:4px;}
.nav-links .nav-link{
  color:var(--text-2);font-weight:600;font-size:15.5px;padding:9px 16px;border-radius:999px;position:relative;
}
.nav-links .nav-link:hover{color:var(--primary);background:var(--primary-soft);}
.nav-links .nav-link.active{color:var(--primary-deep);background:var(--primary-soft);}
.nav-tools{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;background:var(--bg-gray);border:1px solid var(--line);
  border-radius:999px;padding:8px 16px;min-width:230px;transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box i{color:var(--text-3);font-size:14px;}
.search-box input{
  border:0;background:transparent;outline:none;width:100%;font-size:14.5px;color:var(--text);font-family:var(--font);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 4px rgba(255,107,44,.14);}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;font-weight:700;font-size:15px;
  color:#fff;background:var(--grad);border:0;box-shadow:0 10px 24px rgba(255,107,44,.26);
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 34px rgba(255,107,44,.34);}
.navbar-toggler{border:1px solid var(--line);border-radius:12px;padding:9px 12px;background:#fff;box-shadow:none;}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(255,107,44,.25);}
.menu-bar{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;}
.menu-bar + .menu-bar{margin-top:4px;}

/* ============ BUTTONS ============ */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:700;font-size:15.5px;
  border-radius:999px;padding:13px 28px;border:1px solid transparent;cursor:pointer;transition:all .22s ease;
}
.btn-main{color:#fff;background:var(--grad);box-shadow:0 12px 28px rgba(255,107,44,.26);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 40px rgba(255,107,44,.34);}
.btn-ghost{color:var(--text);background:#fff;border-color:var(--line);box-shadow:var(--shadow);}
.btn-ghost:hover{color:var(--primary-deep);border-color:var(--primary);background:var(--primary-soft);transform:translateY(-2px);}
.btn-soft-teal{color:#0E7F73;background:var(--teal-soft);border-color:rgba(20,184,166,.24);border-radius:999px;padding:13px 26px;font-weight:700;display:inline-flex;align-items:center;gap:9px;}
.btn-soft-teal:hover{color:#0B6B60;background:#D6F2ED;transform:translateY(-2px);}

/* ============ BREADCRUMB ============ */
.crumb-bar{background:#fff;border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding:14px 0;}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--primary);}
.crumb .sep{color:#C9CFDB;}
.crumb .current{color:var(--text);font-weight:600;}

/* ============ ARTICLE HEAD ============ */
.article-head{background:linear-gradient(180deg,#FFF8F3 0%,#F7F8FC 100%);padding:44px 0 56px;position:relative;overflow:hidden;}
.article-head::after{
  content:"";position:absolute;right:-140px;top:-120px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle at center,rgba(255,107,44,.16),rgba(108,92,231,0) 68%);pointer-events:none;
}
.article-head .inner{position:relative;z-index:2;max-width:900px;}
.article-head h1{font-size:clamp(1.7rem,3.4vw,2.7rem);letter-spacing:-.02em;margin:14px 0 18px;}
.head-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:600;color:var(--text-2);
  background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 14px;
}
.chip-cat{color:var(--primary-deep);background:var(--primary-soft);border-color:rgba(255,107,44,.22);}
.chip-teal{color:#0E7F73;background:var(--teal-soft);border-color:rgba(20,184,166,.22);}
.lead-text{
  font-size:17px;color:var(--text-2);background:#fff;border:1px solid var(--line);border-left:5px solid var(--primary);
  border-radius:var(--radius-md);padding:20px 24px;box-shadow:var(--shadow);
}
.cover-figure{margin-top:28px;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);background:#fff;}
.cover-figure img{width:100%;height:clamp(220px,38vw,420px);object-fit:cover;}

/* ============ ARTICLE LAYOUT ============ */
.article-body{background:var(--bg-gray);padding:64px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start;}
.article-panel{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);
  padding:clamp(24px,3.4vw,48px);
}
.article-panel .prose{max-width:820px;}
.article-panel .prose h2{
  font-size:clamp(1.35rem,2.4vw,1.75rem);margin:44px 0 16px;padding-left:16px;position:relative;letter-spacing:-.01em;
}
.article-panel .prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:4px;background:var(--grad);
}
.article-panel .prose h3{font-size:1.24rem;margin:32px 0 12px;}
.article-panel .prose p{color:#333B49;margin:0 0 1.15em;}
.article-panel .prose ul,.article-panel .prose ol{margin:0 0 1.3em;padding-left:2px;}
.article-panel .prose ul li,.article-panel .prose ol li{position:relative;padding-left:26px;margin-bottom:10px;color:#333B49;}
.article-panel .prose ul li::before{
  content:"";position:absolute;left:6px;top:.72em;width:8px;height:8px;border-radius:3px;background:var(--grad);
}
.article-panel .prose ol{counter-reset:li;}
.article-panel .prose ol li{counter-increment:li;}
.article-panel .prose ol li::before{
  content:counter(li);position:absolute;left:0;top:.18em;width:20px;height:20px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary-deep);font-size:12px;font-weight:800;
  display:flex;align-items:center;justify-content:center;
}
.article-panel .prose img{border-radius:var(--radius-md);margin:22px 0;box-shadow:var(--shadow);}
.article-panel .prose blockquote{
  margin:26px 0;padding:20px 24px;background:var(--grad-soft);border-left:5px solid var(--purple);
  border-radius:0 var(--radius-md) var(--radius-md) 0;color:var(--text-2);
}
.article-panel .prose blockquote p:last-child{margin-bottom:0;}
.article-panel .prose table{width:100%;border-collapse:separate;border-spacing:0;margin:24px 0;font-size:15.5px;border:1px solid var(--line);border-radius:var(--radius-md);overflow:hidden;}
.article-panel .prose thead th{background:var(--bg-warm);color:var(--text);font-weight:700;text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);}
.article-panel .prose tbody td{padding:13px 16px;border-bottom:1px solid var(--line);color:var(--text-2);}
.article-panel .prose tbody tr:last-child td{border-bottom:0;}
.article-panel .prose a{color:var(--primary-deep);border-bottom:1px dashed rgba(255,107,44,.5);}
.article-panel .prose a:hover{color:var(--primary);border-bottom-style:solid;}
.article-panel .prose code{background:var(--bg-gray);border-radius:8px;padding:2px 7px;font-size:14.5px;color:var(--purple);}
.empty-state{
  text-align:center;padding:64px 20px;background:var(--bg-warm);border:1px dashed var(--line);border-radius:var(--radius-lg);
}
.empty-state i{font-size:40px;color:var(--primary);margin-bottom:16px;display:block;}
.empty-state h3{font-size:1.3rem;margin-bottom:10px;}
.empty-state p{color:var(--text-2);margin-bottom:22px;}

/* ============ TOC / SIDEBAR ============ */
.toc-card{
  position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow);padding:24px;margin-bottom:24px;
}
.toc-title{display:flex;align-items:center;gap:9px;font-size:15.5px;font-weight:800;margin-bottom:14px;}
.toc-title i{color:var(--primary);}
.toc-list{max-height:382px;overflow:auto;padding-right:6px;}
.toc-list a{
  display:block;font-size:14.5px;color:var(--text-2);padding:8px 12px;border-radius:10px;border-left:3px solid transparent;
  line-height:1.6;
}
.toc-list a.sub{padding-left:26px;font-size:13.5px;color:var(--text-3);}
.toc-list a:hover{background:var(--primary-soft);color:var(--primary-deep);}
.toc-list a.on{background:var(--primary-soft);color:var(--primary-deep);border-left-color:var(--primary);font-weight:700;}
.toc-empty{font-size:14px;color:var(--text-3);}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:24px;
}
.side-card h3{font-size:16.5px;margin-bottom:12px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--teal);}
.side-list li{display:flex;gap:10px;padding:10px 0;border-bottom:1px dashed var(--line);font-size:14.5px;color:var(--text-2);}
.side-list li:last-child{border-bottom:0;}
.side-list i{color:var(--primary);margin-top:5px;font-size:12px;}

/* ============ RELATED ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;height:100%;
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,107,44,.3);}
.rel-card img{width:100%;height:166px;object-fit:cover;}
.rel-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{font-size:16.5px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rel-body h3 a:hover{color:var(--primary);}
.rel-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);margin-top:auto;}
.tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;color:var(--primary-deep);background:var(--primary-soft);border-radius:999px;padding:4px 11px;}
.tag-teal{color:#0E7F73;background:var(--teal-soft);}
.tag-purple{color:#5246C6;background:var(--purple-soft);}

/* ============ BACK ENTRY ============ */
.back-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin-top:36px;}

/* ============ FAQ ============ */
.faq-wrap{background:#fff;}
.accordion-item{
  border:1px solid var(--line);border-radius:var(--radius-md) !important;margin-bottom:14px;overflow:hidden;background:#fff;
  transition:box-shadow .22s ease,border-color .22s ease;
}
.accordion-item:hover{border-color:rgba(255,107,44,.3);box-shadow:var(--shadow);}
.accordion-button{
  font-weight:700;font-size:16.5px;color:var(--text);background:#fff;padding:20px 22px;border:0;box-shadow:none !important;
}
.accordion-button:not(.collapsed){color:var(--primary-deep);background:var(--primary-soft);}
.accordion-button::after{
  background-image:none;content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:13px;color:var(--primary);
  width:26px;height:26px;display:flex;align-items:center;justify-content:center;border-radius:50%;
  background-color:var(--primary-soft);transition:transform .25s ease;
}
.accordion-button:not(.collapsed)::after{transform:rotate(180deg);}
.accordion-body{color:var(--text-2);padding:0 22px 22px;font-size:15.8px;border-left:4px solid var(--primary);background:#fff;}

/* ============ DOWNLOAD CTA ============ */
.cta-band{
  background:var(--dark);border-radius:var(--radius-lg);padding:clamp(30px,4vw,54px);position:relative;overflow:hidden;color:#fff;
}
.cta-band::before{
  content:"";position:absolute;inset:0;background:
    radial-gradient(520px 240px at 88% 12%,rgba(255,107,44,.36),transparent 70%),
    radial-gradient(420px 220px at 8% 92%,rgba(108,92,231,.34),transparent 72%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:34px;align-items:center;}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.76);margin:0;}
.dl-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
.dl-btn{
  display:flex;align-items:center;gap:11px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-sm);padding:14px 16px;color:#fff;font-weight:600;font-size:15px;
}
.dl-btn i{font-size:19px;color:#FFB183;}
.dl-btn:hover{background:rgba(255,255,255,.16);color:#fff;transform:translateY(-2px);}
.dl-btn small{display:block;font-weight:400;font-size:12.5px;color:rgba(255,255,255,.6);}
.qr-box{
  margin-top:16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:var(--radius-md);
  padding:16px;display:flex;align-items:center;gap:14px;
}
.qr-box .qr{width:74px;height:74px;border-radius:12px;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--dark);font-size:28px;flex:0 0 auto;}
.qr-box span{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.6;}

/* ============ FOOTER ============ */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.foot-brand .brand-text{color:#fff;font-size:18px;}
.foot-brand-col p{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);margin:0;max-width:360px;}
.foot-title{font-size:15.5px;color:#fff;margin-bottom:18px;font-weight:700;}
.foot-links li{margin-bottom:11px;}
.foot-links a{color:rgba(255,255,255,.68);font-size:14.5px;display:inline-flex;align-items:center;gap:8px;}
.foot-links a i{font-size:10px;color:var(--primary);}
.foot-links a:hover{color:#fff;}
.foot-note{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.62);}
.foot-note b{color:#fff;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:22px 0 26px;display:flex;flex-wrap:wrap;gap:12px;
  justify-content:space-between;font-size:13.5px;color:rgba(255,255,255,.5);
}
.foot-bottom a{color:rgba(255,255,255,.66);}
.foot-bottom a:hover{color:#fff;}

/* ============ RESPONSIVE ============ */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr) 290px;gap:30px;}
  .foot-grid{grid-template-columns:1.3fr 1fr 1fr;gap:30px;}
  .foot-brand-col{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .site-header .navbar{padding:10px 0;}
  .navbar-collapse{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow);
    padding:16px;margin-top:12px;
  }
  .nav-links{gap:2px;margin-bottom:12px;}
  .nav-links .nav-link{padding:11px 14px;border-radius:12px;}
  .nav-tools{flex-direction:column;align-items:stretch;gap:10px;}
  .search-box{min-width:0;width:100%;}
  .btn-cta{justify-content:center;width:100%;}
  .article-layout{grid-template-columns:minmax(0,1fr);}
  .toc-card{position:static;}
  .article-body{padding:48px 0 56px;}
  .cta-inner{grid-template-columns:minmax(0,1fr);}
  .rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .section{padding:60px 0;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-xl{padding:0 16px;}
  .article-head{padding:32px 0 40px;}
  .article-panel{border-radius:var(--radius-md);}
  .lead-text{padding:16px 18px;font-size:16px;}
  .rel-grid{grid-template-columns:minmax(0,1fr);}
  .dl-grid{grid-template-columns:minmax(0,1fr);}
  .foot-grid{grid-template-columns:minmax(0,1fr);gap:26px;}
  .foot-bottom{flex-direction:column;gap:6px;}
}
@media (max-width:575.98px){
  .section{padding:48px 0;}
  .section-tight{padding:40px 0;}
  .btn-main,.btn-ghost,.btn-soft-teal{width:100%;}
  .back-row .btn-ghost,.back-row .btn-main{width:100%;}
  .toc-list{max-height:none;}
}

/* roulang page: category1 */
:root{
  --brand:#FF6B2C;
  --brand-deep:#E24E0F;
  --brand-soft:#FFEDE3;
  --teal:#14B8A6;
  --teal-soft:#E1F7F4;
  --violet:#6C5CE7;
  --violet-soft:#ECEAFD;
  --bg-warm:#FFF8F3;
  --bg-gray:#F7F8FC;
  --card:#FFFFFF;
  --dark:#1E2430;
  --text:#1F2430;
  --sub:#5B6472;
  --weak:#8A94A6;
  --border:#EDEFF5;
  --error:#EF4444;
  --ok:#22C55E;
  --r-xl:24px;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow:0 12px 32px rgba(31,36,48,.08);
  --shadow-hover:0 18px 44px rgba(255,107,44,.16);
  --shadow-nav:0 2px 12px rgba(31,36,48,.04);
  --grad:linear-gradient(135deg,#FF6B2C 0%,#FF9A62 55%,#6C5CE7 100%);
  --wrap:1240px;
}

*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-warm);
  font-weight:400;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(255,107,44,.45);outline-offset:2px;border-radius:6px;}
h1,h2,h3,h4{font-weight:800;color:var(--text);margin:0;line-height:1.35;letter-spacing:-.2px;}
p{margin:0 0 14px;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
.container-xl{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-nav);
}
.site-header .navbar{padding:10px 0;gap:8px;}
.brand{display:flex;align-items:center;gap:10px;padding:0;margin-right:6px;}
.brand-mark{
  width:42px;height:42px;border-radius:14px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--grad);color:#fff;font-size:18px;flex:0 0 42px;
  box-shadow:0 8px 18px rgba(255,107,44,.28);
}
.brand-text{font-size:19px;font-weight:800;color:var(--text);letter-spacing:.2px;white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand-deep);}
.nav-links .nav-link{
  font-size:15.5px;font-weight:600;color:var(--sub);
  padding:8px 14px;border-radius:999px;transition:all .22s ease;
}
.nav-links .nav-link:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links .nav-link.active{color:#fff;background:var(--grad);box-shadow:0 8px 18px rgba(255,107,44,.24);}
.nav-tools{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-gray);border:1px solid var(--border);
  border-radius:999px;padding:8px 16px;min-width:210px;
}
.search-box i{color:var(--weak);font-size:13px;}
.search-box input{
  border:0;background:transparent;outline:0;width:100%;
  font-size:14px;color:var(--text);
}
.search-box input::placeholder{color:var(--weak);}
.search-box:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(255,107,44,.12);}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;
  padding:10px 22px;border-radius:999px;white-space:nowrap;
  box-shadow:0 10px 22px rgba(255,107,44,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);box-shadow:0 16px 30px rgba(255,107,44,.34);filter:saturate(1.06);}
.navbar-toggler{border:0;padding:6px;box-shadow:none !important;display:flex;flex-direction:column;gap:5px;}
.navbar-toggler:focus{box-shadow:none;}
.menu-bar{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;}

/* ============ 通用按钮 ============ */
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-weight:700;font-size:15.5px;padding:13px 28px;border-radius:999px;
  border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 12px 26px rgba(255,107,44,.3);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 34px rgba(255,107,44,.36);}
.btn-ghost{background:#fff;color:var(--text);border-color:var(--border);box-shadow:0 6px 18px rgba(31,36,48,.06);}
.btn-ghost:hover{color:var(--brand-deep);border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px);}
.btn-light{background:#fff;color:var(--brand-deep);box-shadow:0 12px 26px rgba(0,0,0,.16);}
.btn-light:hover{color:var(--brand-deep);transform:translateY(-2px);box-shadow:0 18px 34px rgba(0,0,0,.2);}
.btn-outline-light-2{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-outline-light-2:hover{background:rgba(255,255,255,.16);color:#fff;border-color:#fff;transform:translateY(-2px);}

/* ============ Hero ============ */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  padding:76px 0 84px;
  background-image:
    linear-gradient(135deg,rgba(226,78,15,.95) 0%,rgba(255,107,44,.9) 46%,rgba(108,92,231,.9) 100%),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;
  background-position:center;
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.34),rgba(255,255,255,0) 66%);
  pointer-events:none;
}
.cat-hero .container-xl{position:relative;z-index:2;}
.crumb{display:flex;align-items:center;gap:10px;font-size:13.5px;color:rgba(255,255,255,.82);margin-bottom:20px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.82);}
.crumb a:hover{color:#fff;}
.crumb i{font-size:10px;opacity:.7;}
.crumb .now{color:#fff;font-weight:600;}
.cat-hero h1{
  color:#fff;font-size:clamp(2rem,4.6vw,3.2rem);max-width:900px;
}
.cat-hero .hero-sub{
  color:rgba(255,255,255,.92);font-size:17.5px;max-width:760px;margin:18px 0 26px;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:7px;
  background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.34);
  color:#fff;font-size:13.5px;font-weight:600;padding:6px 15px;border-radius:999px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
.hero-meta{
  margin-top:34px;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);
  border-radius:var(--r-lg);padding:18px 20px;backdrop-filter:blur(6px);
}
.hero-meta .m-item{color:#fff;}
.hero-meta .m-num{font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;letter-spacing:.4px;}
.hero-meta .m-label{font-size:13px;color:rgba(255,255,255,.82);}

/* ============ 筛选 chips ============ */
.filter-bar{
  background:#fff;border-bottom:1px solid var(--border);
  position:sticky;top:68px;z-index:1010;
}
.filter-inner{display:flex;align-items:center;gap:12px;padding:14px 0;flex-wrap:wrap;}
.filter-label{font-size:14px;font-weight:700;color:var(--sub);margin-right:2px;}
.chip{
  display:inline-flex;align-items:center;gap:7px;
  font-size:14px;font-weight:600;padding:8px 18px;border-radius:999px;
  background:var(--bg-gray);color:var(--sub);border:1px solid var(--border);
  transition:all .22s ease;
}
.chip:hover{color:var(--brand-deep);border-color:var(--brand);background:var(--brand-soft);}
.chip.is-active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 8px 18px rgba(255,107,44,.22);}

/* ============ 板块通用 ============ */
.section{padding:84px 0;}
.section.tight{padding:64px 0;}
.section.alt{background:var(--bg-gray);}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--brand-deep);background:var(--brand-soft);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.sec-head h2{font-size:clamp(1.5rem,3vw,2.2rem);margin-bottom:14px;}
.sec-head p{color:var(--sub);font-size:16.5px;margin:0;}

/* ============ 下载卡片网格 ============ */
.dl-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.dl-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-xl);
  padding:28px 26px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.dl-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,107,44,.34);}
.dl-icon{
  width:56px;height:56px;border-radius:18px;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:18px;color:#fff;
}
.dl-icon.orange{background:linear-gradient(135deg,#FF6B2C,#FF9A62);box-shadow:0 10px 22px rgba(255,107,44,.28);}
.dl-icon.teal{background:linear-gradient(135deg,#14B8A6,#5AD6C8);box-shadow:0 10px 22px rgba(20,184,166,.26);}
.dl-icon.violet{background:linear-gradient(135deg,#6C5CE7,#9C8CF5);box-shadow:0 10px 22px rgba(108,92,231,.26);}
.dl-card h3{font-size:1.28rem;margin-bottom:10px;}
.dl-card p{color:var(--sub);font-size:15px;margin-bottom:18px;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:20px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;font-weight:700;padding:5px 12px;border-radius:999px;
  font-variant-numeric:tabular-nums;
}
.badge-pill.orange{background:var(--brand-soft);color:var(--brand-deep);border:1px solid rgba(255,107,44,.28);}
.badge-pill.teal{background:var(--teal-soft);color:#0F8B7E;border:1px solid rgba(20,184,166,.28);}
.badge-pill.gray{background:var(--bg-gray);color:var(--sub);border:1px solid var(--border);}
.dl-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.link-more{display:inline-flex;align-items:center;gap:7px;font-weight:700;font-size:14.5px;color:var(--brand-deep);}
.link-more i{transition:transform .22s ease;}
.link-more:hover{color:var(--brand);}
.link-more:hover i{transform:translateX(4px);}
.size-note{font-size:13px;color:var(--weak);font-variant-numeric:tabular-nums;}

/* ============ 精选横滑 ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap;}
.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--border);
  color:var(--sub);display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(31,36,48,.07);cursor:pointer;transition:all .22s ease;
}
.rail-btn:hover{color:#fff;background:var(--brand);border-color:var(--brand);transform:translateY(-2px);}
.rail{
  display:flex;gap:22px;overflow-x:auto;padding:6px 4px 20px;
  scroll-snap-type:x mandatory;scrollbar-width:none;
}
.rail::-webkit-scrollbar{display:none;}
.rail-card{
  flex:0 0 320px;scroll-snap-align:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-xl);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .24s ease,box-shadow .24s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.rail-thumb{position:relative;aspect-ratio:16/10;overflow:hidden;}
.rail-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease;}
.rail-card:hover .rail-thumb img{transform:scale(1.05);}
.rail-thumb .tag-float{
  position:absolute;left:14px;top:14px;
  background:rgba(30,36,48,.72);color:#fff;font-size:12.5px;font-weight:600;
  padding:5px 12px;border-radius:999px;backdrop-filter:blur(4px);
}
.rail-body{padding:20px 22px 24px;}
.rail-body h3{font-size:1.1rem;margin-bottom:10px;}
.rail-body p{font-size:14.5px;color:var(--sub);margin-bottom:14px;}

/* ============ 安装流程 ============ */
.step-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;counter-reset:step;}
.step-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  padding:26px 24px;box-shadow:var(--shadow);position:relative;
  transition:transform .24s ease,box-shadow .24s ease;
}
.step-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.step-num{
  width:38px;height:38px;border-radius:12px;background:var(--grad);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;
  font-variant-numeric:tabular-nums;margin-bottom:16px;font-size:15px;
}
.step-item h3{font-size:1.05rem;margin-bottom:8px;}
.step-item p{font-size:14.5px;color:var(--sub);margin:0;}

/* ============ FAQ ============ */
.faq-wrap{max-width:920px;margin:0 auto;}
.faq-wrap .accordion-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg) !important;
  margin-bottom:14px;overflow:hidden;box-shadow:0 8px 22px rgba(31,36,48,.05);
}
.faq-wrap .accordion-button{
  font-weight:700;font-size:16.5px;color:var(--text);background:#fff;
  padding:20px 24px;box-shadow:none !important;
}
.faq-wrap .accordion-button:not(.collapsed){color:var(--brand-deep);background:var(--brand-soft);}
.faq-wrap .accordion-button::after{
  background-image:none;content:"\2b";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:14px;color:var(--brand);transform:none;width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  transition:transform .24s ease;
}
.faq-wrap .accordion-button:not(.collapsed)::after{transform:rotate(45deg);}
.faq-wrap .accordion-body{padding:6px 24px 24px;color:var(--sub);font-size:15.5px;border-left:4px solid var(--brand);margin-left:0;}

/* ============ 底部 CTA ============ */
.cta-band{
  border-radius:var(--r-xl);padding:52px 48px;color:#fff;position:relative;overflow:hidden;
  background-image:linear-gradient(135deg,rgba(226,78,15,.96),rgba(255,107,44,.9) 50%,rgba(108,92,231,.92)),
    url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
  box-shadow:0 24px 52px rgba(226,78,15,.24);
}
.cta-band::after{
  content:"";position:absolute;right:-80px;bottom:-120px;width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.28),rgba(255,255,255,0));
}
.cta-band .cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.8vw,2.1rem);margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.92);margin:0;max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:#B9C0CE;padding:66px 0 0;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:36px;padding-bottom:48px;}
.foot-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.foot-brand .brand-text{color:#fff;font-size:19px;font-weight:800;}
.foot-brand-col p{font-size:14.5px;line-height:1.85;color:#98A1B2;margin:0;}
.foot-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.foot-links li{margin-bottom:11px;}
.foot-links a{color:#98A1B2;font-size:14.5px;display:inline-flex;align-items:center;gap:8px;}
.foot-links a i{font-size:10px;color:var(--brand);}
.foot-links a:hover{color:#fff;}
.foot-note{color:#98A1B2;font-size:14.5px;line-height:1.9;}
.foot-note b{color:#fff;}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13.5px;color:#8A94A6;
}
.foot-bottom a{color:#8A94A6;}
.foot-bottom a:hover{color:var(--brand);}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .dl-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step-list{grid-template-columns:repeat(2,minmax(0,1fr));}
  .hero-meta{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991.98px){
  .site-header .navbar{padding:10px 0;}
  .navbar-collapse{
    margin-top:14px;padding:16px;border:1px solid var(--border);border-radius:var(--r-lg);
    background:#fff;box-shadow:0 16px 34px rgba(31,36,48,.1);
  }
  .nav-links{width:100%;}
  .nav-links .nav-link{padding:11px 16px;border-radius:var(--r-sm);margin-bottom:4px;}
  .nav-tools{flex-direction:column;align-items:stretch;gap:10px;margin-top:12px;}
  .search-box{min-width:0;width:100%;}
  .btn-cta{justify-content:center;padding:13px 22px;}
  .filter-bar{position:static;}
  .filter-inner{overflow-x:auto;flex-wrap:nowrap;padding:14px 0;scrollbar-width:none;}
  .filter-inner::-webkit-scrollbar{display:none;}
  .chip{white-space:nowrap;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-band{padding:42px 30px;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-xl{padding:0 16px;}
  .section{padding:60px 0;}
  .section.tight{padding:48px 0;}
  .cat-hero{padding:54px 0 60px;}
  .cat-hero .hero-sub{font-size:16px;}
  .dl-grid{grid-template-columns:1fr;gap:18px;}
  .step-list{grid-template-columns:1fr;gap:18px;}
  .rail-card{flex:0 0 82%;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:575.98px){
  .brand-text{font-size:17px;}
  .hero-meta{grid-template-columns:1fr 1fr;padding:16px;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;}
  .cta-actions{width:100%;}
  .cta-actions .btn-main,.cta-actions .btn-light,.cta-actions .btn-outline-light-2{width:100%;}
  .sec-head{margin-bottom:32px;}
}

/* roulang page: category2 */
:root{
  --brand:#FF6B2C;
  --brand-deep:#E24E0F;
  --brand-soft:rgba(255,107,44,.10);
  --cyan:#14B8A6;
  --cyan-soft:rgba(20,184,166,.12);
  --purple:#6C5CE7;
  --purple-soft:rgba(108,92,231,.12);
  --bg-warm:#FFF8F3;
  --bg-gray:#F7F8FC;
  --card:#FFFFFF;
  --dark:#1E2430;
  --text:#1F2430;
  --text-2:#5B6472;
  --text-3:#8A94A6;
  --line:#EDEFF5;
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --r-xs:12px;
  --sh:0 12px 32px rgba(31,36,48,.08);
  --sh-hover:0 18px 44px rgba(255,107,44,.16);
  --sh-nav:0 2px 12px rgba(31,36,48,.04);
  --grad:linear-gradient(135deg,#FF6B2C 0%,#FF9A62 55%,#6C5CE7 100%);
  --sec-y:88px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:104px;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg-warm);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--text);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--brand);}
h1,h2,h3,h4,h5{margin:0 0 .6em;font-weight:800;line-height:1.3;letter-spacing:-.01em;}
h1{font-size:clamp(2rem,5vw,3.2rem);}
h2{font-size:clamp(1.5rem,3vw,2.15rem);}
h3{font-size:1.28rem;}
p{margin:0 0 1em;color:var(--text-2);}
ul{margin:0;padding:0;list-style:none;}
button,input{font-family:inherit;}
:focus-visible{outline:3px solid rgba(255,107,44,.45);outline-offset:2px;}
.container-xl{max-width:1280px;margin:0 auto;padding:0 24px;}
.num{font-variant-numeric:tabular-nums;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:#fff;
  border-bottom:1px solid var(--line);
  box-shadow:var(--sh-nav);
}
.site-header .navbar{padding:12px 0;align-items:center;}
.brand{display:flex;align-items:center;gap:12px;padding:0;margin-right:12px;flex-shrink:0;}
.brand-mark{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--grad);
  color:#fff;font-size:19px;
  box-shadow:0 8px 20px rgba(255,107,44,.28);
}
.brand-text{font-size:19px;font-weight:800;color:var(--text);letter-spacing:-.02em;line-height:1;}
.brand:hover .brand-text{color:var(--brand-deep);}
.nav-links{gap:6px;}
.nav-links .nav-link{
  padding:9px 16px;border-radius:999px;
  color:var(--text-2);font-weight:600;font-size:15.5px;
  transition:color .22s ease,background .22s ease;
}
.nav-links .nav-link:hover{color:var(--brand-deep);background:var(--brand-soft);}
.nav-links .nav-link.active{color:#fff;background:var(--grad);box-shadow:0 8px 18px rgba(255,107,44,.25);}
.nav-tools{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;align-items:center;gap:9px;
  background:var(--bg-gray);
  border:1px solid var(--line);
  border-radius:999px;
  padding:8px 16px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.search-box i{color:var(--text-3);font-size:14px;}
.search-box input{
  border:0;background:transparent;outline:none;
  width:184px;font-size:14.5px;color:var(--text);
}
.search-box input::placeholder{color:var(--text-3);}
.search-box:focus-within{
  background:#fff;border-color:var(--brand);
  box-shadow:0 0 0 4px rgba(255,107,44,.14);
}
.btn-cta{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 22px;border-radius:999px;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;
  box-shadow:0 10px 24px rgba(255,107,44,.28);
  transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
  white-space:nowrap;
}
.btn-cta:hover{color:#fff;transform:translateY(-2px);filter:saturate(1.12);box-shadow:0 16px 34px rgba(255,107,44,.34);}
.navbar-toggler{
  border:1px solid var(--line);border-radius:12px;
  padding:9px 11px;background:#fff;box-shadow:none;
}
.navbar-toggler:focus{box-shadow:0 0 0 4px rgba(255,107,44,.18);}
.menu-bar{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;margin:4px 0;}

/* ---------- Breadcrumb ---------- */
.crumb{padding:20px 0 0;font-size:14px;color:var(--text-3);}
.crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb li+li::before{content:"/";color:#C9CFDA;}
.crumb a{color:var(--text-3);}
.crumb a:hover{color:var(--brand);}
.crumb .current{color:var(--text);font-weight:600;}

/* ---------- Page Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;
  margin-top:16px;
  padding:58px 0 62px;
  border-radius:28px;
  background:
    linear-gradient(120deg,rgba(255,248,243,.94) 0%,rgba(247,248,252,.88) 46%,rgba(108,92,231,.14) 100%),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border:1px solid var(--line);
  box-shadow:var(--sh);
}
.page-hero::after{
  content:"";position:absolute;right:-90px;top:-110px;
  width:340px;height:340px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,rgba(255,107,44,.34),rgba(255,107,44,0) 68%);
  pointer-events:none;
}
.page-hero-inner{position:relative;z-index:2;max-width:840px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 16px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  color:var(--brand-deep);font-size:13.5px;font-weight:700;
  box-shadow:0 6px 16px rgba(31,36,48,.06);
  margin-bottom:18px;
}
.page-hero h1{margin-bottom:16px;}
.page-hero h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero p.lead{
  font-size:17.5px;color:var(--text-2);max-width:720px;margin-bottom:26px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:26px;}
.btn-main,.btn-ghost{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 26px;border-radius:14px;font-weight:700;font-size:15.5px;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-main{background:var(--grad);color:#fff;box-shadow:0 12px 28px rgba(255,107,44,.30);}
.btn-main:hover{color:#fff;transform:translateY(-2px);box-shadow:0 18px 40px rgba(255,107,44,.36);}
.btn-ghost{background:#fff;color:var(--text);border:1px solid var(--line);}
.btn-ghost:hover{background:var(--brand-soft);border-color:var(--brand);color:var(--brand-deep);transform:translateY(-2px);}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;}
.badge-pill{
  display:inline-flex;align-items:center;gap:7px;
  padding:7px 15px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13.5px;font-weight:700;
  border:1px solid rgba(255,107,44,.22);
}
.badge-pill.cyan{background:var(--cyan-soft);color:#0E8C7F;border-color:rgba(20,184,166,.24);}
.badge-pill.purple{background:var(--purple-soft);color:#4B3FD1;border-color:rgba(108,92,231,.24);}

/* ---------- Chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:10px;padding:26px 0 0;}
.chip{
  padding:9px 18px;border-radius:999px;
  background:#fff;border:1px solid var(--line);
  color:var(--text-2);font-size:14.5px;font-weight:600;
  transition:all .22s ease;cursor:pointer;
}
.chip:hover{border-color:var(--brand);color:var(--brand-deep);}
.chip.is-on{background:var(--grad);color:#fff;border-color:transparent;box-shadow:0 10px 22px rgba(255,107,44,.26);}

/* ---------- Layout ---------- */
.main-wrap{padding:46px 0 var(--sec-y);}
.split{display:grid;grid-template-columns:280px minmax(0,1fr);gap:40px;align-items:start;}

/* Sticky side nav */
.side-nav{
  position:sticky;top:100px;
  background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px 20px;
  box-shadow:var(--sh);
}
.side-nav h4{
  font-size:13px;letter-spacing:.12em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;font-weight:700;
}
.toc-list{display:flex;flex-direction:column;gap:4px;}
.toc-link{
  display:flex;align-items:center;gap:11px;
  padding:10px 13px;border-radius:12px;
  color:var(--text-2);font-size:15px;font-weight:600;
  border-left:3px solid transparent;
  transition:all .2s ease;
}
.toc-link .idx{
  width:24px;height:24px;border-radius:8px;flex-shrink:0;
  display:grid;place-items:center;font-size:12px;
  background:var(--bg-gray);color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.toc-link:hover{background:var(--bg-gray);color:var(--brand-deep);}
.toc-link.is-active{
  background:var(--brand-soft);color:var(--brand-deep);
  border-left-color:var(--brand);
}
.toc-link.is-active .idx{background:var(--grad);color:#fff;}
.side-cta{
  margin-top:20px;padding-top:20px;border-top:1px dashed var(--line);
}
.side-cta p{font-size:13.5px;color:var(--text-3);margin-bottom:12px;}
.side-cta .btn-main{width:100%;justify-content:center;padding:12px 18px;font-size:15px;}

/* Content panels */
.panel{
  background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:34px 34px 30px;
  box-shadow:var(--sh);margin-bottom:26px;
  scroll-margin-top:104px;
}
.panel-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:22px;}
.panel-num{
  flex-shrink:0;width:46px;height:46px;border-radius:14px;
  display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);
  font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;
}
.panel-head h2{font-size:clamp(1.3rem,2.4vw,1.7rem);margin-bottom:6px;}
.panel-head p{margin:0;font-size:15px;color:var(--text-3);}

/* Timeline */
.timeline{position:relative;padding-left:26px;margin-top:8px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,#FF6B2C,#FF9A62 55%,#6C5CE7);
  border-radius:2px;opacity:.5;
}
.tl-item{position:relative;padding:0 0 24px 4px;}
.tl-item:last-child{padding-bottom:0;}
.tl-item::before{
  content:"";position:absolute;left:-25px;top:8px;
  width:14px;height:14px;border-radius:50%;
  background:#fff;border:3px solid var(--brand);
  box-shadow:0 0 0 4px rgba(255,107,44,.12);
}
.tl-item h4{font-size:16.5px;margin-bottom:6px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.tl-item p{margin:0;font-size:15px;}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 11px;border-radius:999px;
  font-size:12.5px;font-weight:700;
  background:var(--bg-gray);color:var(--text-2);
}
.tag.now{background:var(--brand-soft);color:var(--brand-deep);}
.tag.ok{background:var(--cyan-soft);color:#0E8C7F;}

/* Progress */
.progress-card{
  margin-top:22px;padding:20px 22px;border-radius:var(--r-md);
  background:var(--bg-gray);border:1px solid var(--line);
}
.progress-card .pc-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:12px;}
.progress-card .pc-top b{font-size:15.5px;}
.progress-card .pc-top span{font-size:13.5px;color:var(--text-3);}
.bar{height:10px;border-radius:999px;background:#E7EAF2;overflow:hidden;}
.bar>i{display:block;height:100%;border-radius:999px;background:var(--grad);width:86%;}

/* Steps */
.steps{display:flex;flex-direction:column;gap:18px;margin-top:6px;}
.step{
  display:grid;grid-template-columns:56px minmax(0,1fr);gap:18px;
  padding:20px 22px;border-radius:var(--r-md);
  background:var(--bg-gray);border:1px solid var(--line);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease,background .22s ease;
}
.step:hover{background:#fff;border-color:rgba(255,107,44,.3);transform:translateY(-2px);box-shadow:var(--sh-hover);}
.step-idx{
  width:56px;height:56px;border-radius:18px;
  display:grid;place-items:center;
  background:#fff;border:1px solid var(--line);
  color:var(--brand-deep);font-weight:800;font-size:17px;
  font-variant-numeric:tabular-nums;
}
.step h4{margin-bottom:6px;font-size:16.5px;}
.step p{margin:0;font-size:15px;}
.step .mini-tips{margin-top:10px;display:flex;flex-wrap:wrap;gap:8px;}

/* Compare */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:6px;}
.compare-card{
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:22px;background:#fff;
  transition:transform .22s ease,box-shadow .22s ease;
}
.compare-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);}
.compare-card .cc-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;margin-bottom:14px;padding-bottom:14px;
  border-bottom:1px dashed var(--line);
}
.compare-card .cc-head b{font-size:17px;}
.compare-card .cc-head .ver{
  font-size:13px;font-weight:700;padding:4px 12px;border-radius:999px;
  background:var(--bg-gray);color:var(--text-2);
}
.compare-card.new .cc-head .ver{background:var(--brand-soft);color:var(--brand-deep);}
.compare-card ul{display:flex;flex-direction:column;gap:11px;}
.compare-card li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.compare-card li i{margin-top:6px;font-size:12px;color:var(--cyan);}
.compare-card.old li i{color:var(--text-3);}
.compare-card li b{color:var(--text);font-weight:700;}

/* Figure */
.figure-block{
  margin-top:24px;border-radius:var(--r-md);overflow:hidden;
  border:1px solid var(--line);position:relative;
}
.figure-block img{width:100%;height:280px;object-fit:cover;}
.figure-block figcaption{
  padding:14px 20px;background:#fff;font-size:14px;color:var(--text-3);
  border-top:1px solid var(--line);
}

/* Checklist */
.task-list{display:flex;flex-direction:column;gap:12px;margin-top:6px;}
.task{
  display:flex;gap:14px;align-items:flex-start;
  padding:16px 18px;border-radius:var(--r-sm);
  background:var(--bg-gray);border:1px solid var(--line);
  transition:background .2s ease,border-color .2s ease;
}
.task:hover{background:#fff;border-color:rgba(20,184,166,.32);}
.task .box{
  width:24px;height:24px;border-radius:8px;flex-shrink:0;margin-top:3px;
  display:grid;place-items:center;
  background:var(--cyan-soft);color:#0E8C7F;font-size:12px;
}
.task b{display:block;font-size:15.5px;margin-bottom:2px;}
.task span{font-size:14.5px;color:var(--text-2);}

/* FAQ */
.faq .accordion-item{
  border:1px solid var(--line);border-radius:var(--r-sm)!important;
  margin-bottom:12px;overflow:hidden;background:#fff;
}
.faq .accordion-button{
  background:#fff;color:var(--text);font-weight:700;font-size:16px;
  padding:18px 22px;box-shadow:none;border-radius:var(--r-sm)!important;
}
.faq .accordion-button:not(.collapsed){
  background:var(--brand-soft);color:var(--brand-deep);
  box-shadow:inset 4px 0 0 var(--brand);
}
.faq .accordion-button:focus{box-shadow:0 0 0 4px rgba(255,107,44,.16);}
.faq .accordion-button::after{
  background-image:none;
  content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;
  font-size:13px;color:var(--text-3);
  width:auto;height:auto;transition:transform .25s ease,color .25s ease;
}
.faq .accordion-button:not(.collapsed)::after{transform:rotate(180deg);color:var(--brand-deep);}
.faq .accordion-body{padding:4px 22px 20px;font-size:15.5px;color:var(--text-2);line-height:1.85;}

/* Back row */
.back-row{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;
  margin:6px 0 26px;
}

/* CTA band */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:28px;padding:52px 44px;
  background:linear-gradient(120deg,rgba(30,36,48,.94),rgba(30,36,48,.86) 42%,rgba(108,92,231,.55)),
             url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color:#fff;box-shadow:0 24px 60px rgba(31,36,48,.22);
}
.cta-band::after{
  content:"";position:absolute;left:-60px;bottom:-120px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle at 40% 40%,rgba(255,107,44,.5),rgba(255,107,44,0) 70%);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:36px;align-items:center;}
.cta-band h2{color:#fff;margin-bottom:12px;}
.cta-band p{color:rgba(255,255,255,.78);margin-bottom:22px;font-size:16px;}
.cta-band .btn-ghost{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.34);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.18);border-color:#fff;color:#fff;}
.dl-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.dl-card{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-sm);padding:16px 18px;
  transition:background .22s ease,transform .22s ease;
}
.dl-card:hover{background:rgba(255,255,255,.14);transform:translateY(-2px);}
.dl-card b{display:block;font-size:15px;margin-bottom:4px;}
.dl-card span{font-size:13px;color:rgba(255,255,255,.66);}

/* Footer */
.site-footer{background:var(--dark);color:#C7CDD9;padding:64px 0 26px;margin-top:0;}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.foot-brand .brand-text{color:#fff;font-size:19px;}
.foot-col p{color:#98A1B2;font-size:14.5px;line-height:1.85;}
.foot-title{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px;letter-spacing:.02em;}
.foot-links{display:flex;flex-direction:column;gap:11px;}
.foot-links a{color:#98A1B2;font-size:14.5px;display:inline-flex;align-items:center;gap:8px;}
.foot-links a i{font-size:10px;color:var(--brand);}
.foot-links a:hover{color:#fff;}
.foot-note{font-size:14px;color:#98A1B2;line-height:1.9;}
.foot-note b{color:#fff;font-weight:700;}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:#7E8798;
}
.foot-bottom a{color:#A9B2C2;}
.foot-bottom a:hover{color:#fff;}

/* Responsive */
@media (max-width:1199.98px){
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:30px;}
  .foot-col:last-child{grid-column:span 3;}
}
@media (max-width:991.98px){
  .split{grid-template-columns:1fr;gap:24px;}
  .side-nav{position:static;}
  .side-nav .toc-list{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .toc-link{border-left:0;border:1px solid var(--line);border-radius:999px;padding:8px 14px;font-size:14px;}
  .toc-link .idx{display:none;}
  .toc-link.is-active{border-color:transparent;background:var(--grad);color:#fff;}
  .side-cta{margin-top:16px;padding-top:16px;}
  .cta-grid{grid-template-columns:1fr;gap:26px;}
  .navbar-collapse{
    margin-top:14px;padding:16px;border-radius:var(--r-md);
    background:#fff;border:1px solid var(--line);box-shadow:var(--sh);
  }
  .nav-links{gap:4px;margin-bottom:12px;}
  .nav-links .nav-link{border-radius:12px;padding:11px 14px;}
  .nav-tools{flex-direction:column;align-items:stretch;gap:12px;}
  .search-box{width:100%;}
  .search-box input{width:100%;}
  .btn-cta{justify-content:center;}
}
@media (max-width:767.98px){
  :root{--sec-y:64px;}
  .container-xl{padding:0 16px;}
  .page-hero{padding:44px 20px 50px;border-radius:22px;}
  .panel{padding:24px 20px 22px;border-radius:20px;}
  .panel-head{gap:12px;}
  .panel-num{width:40px;height:40px;border-radius:12px;font-size:15px;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;padding:16px;}
  .step-idx{width:44px;height:44px;border-radius:14px;font-size:15px;}
  .compare-grid{grid-template-columns:1fr;}
  .figure-block img{height:200px;}
  .cta-band{padding:34px 22px;border-radius:22px;}
  .dl-cards{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .foot-col:last-child{grid-column:auto;}
  .hero-actions .btn-main,.hero-actions .btn-ghost{width:100%;justify-content:center;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .crumb{font-size:13px;}
  .panel-head{flex-direction:column;}
  .timeline{padding-left:22px;}
  .tl-item::before{left:-21px;}
}