/* roulang page: index */
:root{
  --bg-base:#05090F;
  --bg-layer:#0A1220;
  --bg-elev:#101A2C;
  --glass:rgba(255,255,255,.055);
  --glass-strong:rgba(255,255,255,.08);
  --primary:#2FD8E6;
  --primary-deep:#0E7C93;
  --accent:#7A5BFF;
  --text-1:#F2F6FB;
  --text-2:rgba(226,236,248,.72);
  --text-3:rgba(226,236,248,.45);
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 8px 28px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(47,216,230,.16);
  --shell:1200px;
  --font-num:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(900px 520px at 10% -8%, rgba(47,216,230,.14), transparent 62%),
    radial-gradient(760px 460px at 92% 4%, rgba(122,91,255,.12), transparent 66%);
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{background:none;border:none;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{line-height:1.25;font-weight:700;}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px;}
::selection{background:rgba(47,216,230,.28);}
::-webkit-scrollbar{width:10px;height:10px;}
::-webkit-scrollbar-track{background:var(--bg-base);}
::-webkit-scrollbar-thumb{background:rgba(47,216,230,.22);border-radius:999px;border:2px solid var(--bg-base);}
::-webkit-scrollbar-thumb:hover{background:rgba(47,216,230,.4);}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding-left:20px;padding-right:20px;}
@media(min-width:768px){.shell{padding-left:32px;padding-right:32px;}}
.shell-wide{max-width:1280px;}

/* ===== Header ===== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(5,9,15,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.35),rgba(122,91,255,.3),transparent);
  opacity:.55;
}
.site-header.is-scrolled{background:rgba(5,9,15,.9);box-shadow:0 10px 34px rgba(0,0,0,.45);}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,rgba(47,216,230,.22),rgba(122,91,255,.24));
  border:1px solid rgba(47,216,230,.35);
  box-shadow:0 0 18px rgba(47,216,230,.2);
}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;white-space:nowrap;}
.brand-text em{font-style:normal;color:var(--primary);}
.brand-sub{display:block;font-size:11px;color:var(--text-3);letter-spacing:.12em;line-height:1.2;}

.site-nav{position:relative;}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 13px;border-radius:10px;
  font-size:14.5px;font-weight:500;color:var(--text-2);
  position:relative;transition:color .2s ease,background .2s ease;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:4px;height:2px;width:0;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:translateX(-50%);transition:width .22s ease;border-radius:2px;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.04);}
.nav-link:hover::after{width:22px;}
.nav-link.is-active{color:var(--text-1);background:rgba(47,216,230,.1);}
.nav-link.is-active::after{width:26px;}

.has-mega{position:static;}
.mega-panel{
  position:absolute;top:100%;left:0;
  padding-top:18px;width:min(860px,calc(100vw - 56px));
  opacity:0;visibility:hidden;transform:translateY(-6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
  z-index:70;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-card{
  background:rgba(10,18,32,.94);
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:0 26px 60px rgba(0,0,0,.55);
  backdrop-filter:blur(16px);
  padding:22px;
  display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:22px;
}
.mega-title{font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-bottom:12px;}
.mega-item{
  display:flex;gap:11px;align-items:flex-start;padding:9px 10px;border-radius:12px;
  transition:background .2s ease,transform .2s ease;
}
.mega-item:hover{background:rgba(47,216,230,.08);transform:translateX(3px);}
.mega-ico{
  width:32px;height:32px;border-radius:9px;flex:0 0 auto;
  display:flex;align-items:center;justify-content:center;
  background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.22);
}
.mega-item strong{display:block;font-size:14px;font-weight:600;}
.mega-item span{display:block;font-size:12px;color:var(--text-3);line-height:1.6;}
.mega-entry{
  border:1px solid var(--line);border-radius:16px;overflow:hidden;
  background:rgba(255,255,255,.03);display:block;transition:transform .2s ease,border-color .2s ease;
}
.mega-entry:hover{transform:translateY(-3px);border-color:rgba(47,216,230,.4);}
.mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.mega-entry div{padding:12px 14px 14px;}
.mega-entry strong{display:block;font-size:14px;margin-bottom:4px;}
.mega-entry span{font-size:12px;color:var(--text-3);display:inline-flex;align-items:center;gap:5px;}

.icon-btn{
  width:40px;height:40px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);
  transition:all .2s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:rgba(47,216,230,.45);background:rgba(47,216,230,.1);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;line-height:1;
  transition:all .22s ease;white-space:nowrap;
}
.btn-glow{
  background:linear-gradient(135deg,#2FD8E6 0%,#7A5BFF 100%);
  color:#04121A;
  box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
}
.btn-glow:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 14px 38px rgba(47,216,230,.42);}
.btn-glow:active{transform:scale(.98);background:linear-gradient(135deg,#0E7C93,#5b45c9);}
.btn-ghost{
  border:1px solid rgba(47,216,230,.45);color:var(--primary);background:transparent;
}
.btn-ghost:hover{background:rgba(47,216,230,.1);transform:translateY(-1px);}
.btn-ghost:active{transform:scale(.98);}
.btn:disabled,.btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}

/* ===== Hero ===== */
.hero{
  position:relative;
  min-height:540px;
  display:flex;align-items:center;
  padding-top:120px;padding-bottom:72px;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
  overflow:hidden;
}
@media(min-width:1024px){.hero{min-height:620px;padding-top:140px;padding-bottom:96px;}}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(5,9,15,.9) 8%,rgba(5,9,15,.7) 48%,rgba(5,9,15,.55) 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(620px 380px at 78% 22%, rgba(47,216,230,.28), transparent 62%),
             radial-gradient(520px 340px at 88% 78%, rgba(122,91,255,.24), transparent 68%);
  opacity:.9;
}
.hero .shell{position:relative;z-index:2;}
.hero-card{
  max-width:660px;
  background:rgba(10,18,32,.62);
  border:1px solid var(--line-strong);
  border-radius:22px;
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  padding:28px 26px;
  box-shadow:0 22px 60px rgba(0,0,0,.45);
}
@media(min-width:768px){.hero-card{padding:38px 40px;}}
.hero h1{
  font-size:clamp(30px,4.6vw,52px);
  line-height:1.15;
  letter-spacing:-.01em;
}
.hero h1 em{font-style:normal;background:linear-gradient(120deg,#2FD8E6,#7A5BFF);-webkit-background-clip:text;background-clip:text;color:transparent;}
.hero-sub{margin-top:16px;font-size:16px;color:var(--text-2);max-width:520px;}
.hero-actions{margin-top:28px;display:flex;flex-wrap:wrap;gap:12px;}
.hero-stats{
  margin-top:32px;padding-top:22px;border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 24px;
}
@media(min-width:640px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
.hero-stats b{display:block;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;}
.hero-stats span{font-size:12.5px;color:var(--text-3);}

/* ===== Sections ===== */
.section{position:relative;z-index:1;padding:56px 0;}
@media(min-width:1024px){.section{padding:96px 0;}}
.section-tight{padding:44px 0;}
@media(min-width:1024px){.section-tight{padding:64px 0;}}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:34px;}
.eyebrow{
  font-size:12px;letter-spacing:.16em;color:var(--primary);
  text-transform:uppercase;margin-bottom:10px;display:block;
}
.h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;}
.section-desc{margin-top:12px;color:var(--text-2);font-size:15px;max-width:640px;}
.link-more{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:600;color:var(--primary);transition:gap .2s ease,color .2s ease;}
.link-more:hover{gap:11px;color:#7ff0f8;}

/* ===== Chips ===== */
.chip-row{display:flex;gap:12px;overflow-x:auto;padding:4px 0 12px;scrollbar-width:none;}
.chip-row::-webkit-scrollbar{display:none;}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:9px;
  padding:11px 18px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);
  font-size:14px;color:var(--text-2);
  transition:all .2s ease;backdrop-filter:blur(8px);
}
.chip:hover{color:var(--text-1);border-color:rgba(47,216,230,.42);background:rgba(47,216,230,.09);transform:translateY(-2px);}
.chip svg{color:var(--primary);}

/* ===== Cards ===== */
.card{
  position:relative;
  background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  overflow:hidden;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,216,230,.34);}
.ph{
  background-color:var(--bg-elev);
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:26px 26px;
  position:relative;overflow:hidden;
}
.ph img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .ph img{transform:scale(1.04);}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:999px;
  font-size:12px;letter-spacing:.06em;font-weight:500;
  background:var(--glass-strong);border:1px solid var(--line);color:var(--text-2);
}
.badge-primary{color:var(--primary);border-color:rgba(47,216,230,.32);background:rgba(47,216,230,.1);}
.badge-accent{color:#b8a8ff;border-color:rgba(122,91,255,.34);background:rgba(122,91,255,.12);}

.feat-card{display:flex;flex-direction:column;height:100%;}
.feat-card .ph{aspect-ratio:16/10;}
.feat-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:11px;flex:1;}
.feat-card h3{font-size:18px;font-weight:600;}
.feat-card p{font-size:14px;color:var(--text-2);line-height:1.75;}
.feat-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}
.feat-lg .ph{aspect-ratio:16/9;}
@media(min-width:1024px){.feat-lg .ph{aspect-ratio:auto;height:100%;min-height:300px;}}
.feat-lg{display:flex;flex-direction:column;}
@media(min-width:1024px){.feat-lg{flex-direction:row;}}
@media(min-width:1024px){.feat-lg .ph{width:46%;aspect-ratio:auto;} .feat-lg .feat-body{width:54%;justify-content:center;padding:30px 34px;gap:14px;} .feat-lg h3{font-size:22px;}}
.feat-lg p{font-size:15px;}

/* ===== CMS posts ===== */
.post-card{background:linear-gradient(180deg,rgba(255,255,255,.055),rgba(255,255,255,.02));border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;height:100%;}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,216,230,.34);}
.post-link{display:flex;flex-direction:column;height:100%;}
.post-thumb{position:relative;}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.post-thumb .badge{position:absolute;top:12px;left:12px;backdrop-filter:blur(8px);background:rgba(10,18,32,.72);}
.post-body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-body h3{font-size:16.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-body p{font-size:13.5px;color:var(--text-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;}
.empty-state{
  border:1px dashed var(--line-strong);border-radius:var(--radius-card);
  padding:56px 24px;text-align:center;background:rgba(255,255,255,.02);
}
.empty-state p{color:var(--text-2);margin:14px 0 20px;font-size:15px;}

/* ===== Reviews ===== */
.review-track{display:flex;gap:24px;overflow-x:auto;padding:6px 2px 20px;scroll-snap-type:x mandatory;scrollbar-width:none;}
.review-track::-webkit-scrollbar{display:none;}
.review-card{
  flex:0 0 auto;scroll-snap-align:start;
  width:86%;
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);backdrop-filter:blur(10px);
}
@media(min-width:768px){.review-card{width:calc(50% - 12px);}}
@media(min-width:1024px){.review-card{width:calc(33.333% - 16px);}}
.review-card blockquote{margin:14px 0 0;font-size:14.5px;color:var(--text-2);line-height:1.8;}
.review-user{margin-top:18px;display:flex;align-items:center;gap:12px;padding-top:16px;border-top:1px solid var(--line);}
.avatar{width:40px;height:40px;border-radius:999px;flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:600;color:#04121A;background:linear-gradient(135deg,#2FD8E6,#7A5BFF);}
.dots{display:flex;gap:8px;justify-content:center;margin-top:6px;}
.dot{width:8px;height:8px;border-radius:999px;background:rgba(255,255,255,.18);}
.dot.is-on{width:22px;background:var(--primary);}

/* ===== Assurance ===== */
.assure{display:grid;grid-template-columns:1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
@media(min-width:640px){.assure{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.assure{grid-template-columns:repeat(4,1fr);}}
.assure-item{padding:26px 22px;display:flex;gap:14px;align-items:flex-start;border-bottom:1px solid var(--line);}
@media(min-width:640px){.assure-item{border-right:1px solid var(--line);}}
@media(min-width:1024px){.assure-item{border-bottom:none;}}
.assure-item:nth-child(2n){border-right:none;}
@media(min-width:1024px){.assure-item:nth-child(2n){border-right:1px solid var(--line);} .assure-item:last-child{border-right:none;}}
.assure-item h3{font-size:15.5px;margin-bottom:6px;}
.assure-item p{font-size:13.5px;color:var(--text-2);line-height:1.7;}

/* ===== Steps / data ===== */
.step{position:relative;padding-left:66px;padding-bottom:30px;}
.step:last-child{padding-bottom:0;}
.step::before{
  content:"";position:absolute;left:21px;top:44px;bottom:2px;width:1px;
  background:linear-gradient(180deg,rgba(47,216,230,.5),rgba(122,91,255,.12));
}
.step:last-child::before{display:none;}
.step-num{
  position:absolute;left:0;top:0;width:44px;height:44px;border-radius:13px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--primary);
  background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.28);
}
.step h3{font-size:16.5px;margin-bottom:7px;}
.step p{font-size:14px;color:var(--text-2);}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;}
.stat-card{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;padding:20px;
  transition:border-color .2s ease,transform .2s ease;
}
.stat-card:hover{border-color:rgba(47,216,230,.36);transform:translateY(-2px);}
.stat-card b{display:block;font-family:var(--font-num);font-size:26px;font-weight:700;color:var(--text-1);font-variant-numeric:tabular-nums;}
.stat-card span{font-size:13px;color:var(--text-3);}

/* ===== FAQ ===== */
.faq-item{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  margin-bottom:12px;overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item.open{border-color:rgba(47,216,230,.32);background:rgba(47,216,230,.05);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--text-1);
}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--primary);
  transition:transform .22s ease,background .22s ease;
}
.faq-item.open .faq-sign{transform:rotate(180deg);background:rgba(47,216,230,.14);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-item.open .faq-a{max-height:260px;}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px;margin:0 22px 20px;}

/* ===== CTA form ===== */
.cta-panel{
  background:linear-gradient(135deg,rgba(47,216,230,.1),rgba(122,91,255,.12)),rgba(10,18,32,.7);
  border:1px solid var(--line-strong);
  border-radius:24px;
  padding:28px;
  backdrop-filter:blur(14px);
  display:grid;gap:28px;
  box-shadow:0 24px 60px rgba(0,0,0,.45);
}
@media(min-width:768px){.cta-panel{padding:40px;}}
@media(min-width:1024px){.cta-panel{grid-template-columns:1fr 1fr;align-items:center;gap:48px;}}
.field{margin-bottom:14px;}
.field label{display:block;font-size:12.5px;color:var(--text-3);margin-bottom:7px;letter-spacing:.04em;}
.field input,.field textarea{
  width:100%;padding:13px 15px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);
  color:var(--text-1);font-size:14.5px;transition:border-color .2s ease,box-shadow .2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(226,236,248,.3);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,230,.18);
}
.form-tip{display:none;margin-top:12px;font-size:13.5px;color:var(--primary);}

/* ===== Footer ===== */
.site-footer{position:relative;z-index:1;background:#03060b;border-top:1px solid var(--line);margin-top:20px;}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.45),rgba(122,91,255,.4),transparent);
}
.foot-grid{display:grid;gap:34px;padding:56px 0 40px;}
@media(min-width:640px){.foot-grid{grid-template-columns:repeat(2,1fr);}}
@media(min-width:1024px){.foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:44px;}}
.foot-title{font-size:13px;letter-spacing:.14em;color:var(--text-3);margin-bottom:16px;}
.foot-links li{margin-bottom:11px;}
.foot-links a{font-size:14px;color:var(--text-2);transition:color .2s ease,transform .2s ease;display:inline-block;}
.foot-links a:hover{color:var(--primary);transform:translateX(2px);}
.social{display:flex;gap:10px;margin-top:18px;}
.qr-box{
  width:80px;height:80px;border-radius:12px;border:1px solid var(--line);
  background:
    linear-gradient(45deg,rgba(255,255,255,.06) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.06) 75%),
    linear-gradient(45deg,rgba(255,255,255,.06) 25%,transparent 25%,transparent 75%,rgba(255,255,255,.06) 75%),
    var(--bg-elev);
  background-size:14px 14px;background-position:0 0,7px 7px;
  display:flex;align-items:center;justify-content:center;font-size:11px;color:var(--text-3);
}
.foot-bottom{border-top:1px solid var(--line);padding:20px 0 28px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--text-3);}

/* ===== Mobile drawer ===== */
.drawer{position:fixed;inset:0;z-index:80;opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;}
.drawer.open{opacity:1;visibility:visible;}
.drawer-mask{position:absolute;inset:0;background:rgba(2,5,10,.7);backdrop-filter:blur(6px);}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(340px,86vw);
  background:rgba(8,14,24,.98);border-left:1px solid var(--line);
  padding:22px;overflow-y:auto;transform:translateX(100%);transition:transform .25s ease;
}
.drawer.open .drawer-panel{transform:translateX(0);}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border-radius:12px;font-size:15px;color:var(--text-2);
  border:1px solid transparent;transition:all .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{background:rgba(47,216,230,.1);color:var(--text-1);border-color:rgba(47,216,230,.25);}

.glass-bar{
  background:var(--glass);border:1px solid var(--line);border-radius:16px;
  padding:16px 18px;display:flex;align-items:center;gap:12px;
}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* roulang page: category1 */
:root{
    --bg-base:#05090F;
    --bg-layer:#0A1220;
    --bg-elev:#101A2C;
    --glass:rgba(255,255,255,.055);
    --glass-strong:rgba(255,255,255,.085);
    --line:rgba(255,255,255,.09);
    --primary:#2FD8E6;
    --primary-deep:#0E7C93;
    --accent:#7A5BFF;
    --text-1:#F2F6FB;
    --text-2:rgba(226,236,248,.72);
    --text-3:rgba(226,236,248,.45);
    --danger:#FF6B8A;
    --r-card:18px;
    --r-btn:12px;
    --r-img:14px;
    --shadow-card:0 8px 28px rgba(0,0,0,.35);
    --shadow-hover:0 16px 40px rgba(47,216,230,.16);
    --shell:1200px;
    --shell-wide:1280px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--text-1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  body::before{
    content:"";
    position:fixed;
    inset:0;
    background:
      radial-gradient(760px 420px at 12% -6%,rgba(47,216,230,.14),transparent 62%),
      radial-gradient(680px 400px at 92% 4%,rgba(122,91,255,.13),transparent 60%);
    pointer-events:none;
    z-index:0;
  }
  img{max-width:100%;display:block;border-radius:var(--r-img)}
  a{color:inherit;text-decoration:none}
  button,input,textarea,select{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol,figure{margin:0}
  ul,ol{padding:0;list-style:none}
  ::selection{background:rgba(47,216,230,.32);color:#fff}
  ::-webkit-scrollbar{width:10px;height:10px}
  ::-webkit-scrollbar-track{background:var(--bg-base)}
  ::-webkit-scrollbar-thumb{background:rgba(47,216,230,.25);border-radius:8px}
  ::-webkit-scrollbar-thumb:hover{background:rgba(47,216,230,.45)}

  .shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px;position:relative;z-index:1}
  .shell-wide{max-width:var(--shell-wide)}
  @media(min-width:768px){.shell{padding:0 32px}}

  /* ============ Header ============ */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    background:rgba(5,9,15,.74);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid transparent;
    transition:border-color .25s ease,background .25s ease;
  }
  .site-header.is-scrolled{border-bottom-color:var(--line);background:rgba(5,9,15,.9)}
  .header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:none}
  .brand-mark{
    width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(47,216,230,.22),rgba(122,91,255,.22));
    border:1px solid rgba(47,216,230,.32);
  }
  .brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--text-1)}
  .brand-text em{font-style:normal;color:var(--primary)}
  .site-nav{display:none}
  @media(min-width:1024px){.site-nav{display:block}}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    padding:10px 14px;font-size:15px;font-weight:500;color:var(--text-2);
    border-radius:10px;transition:color .2s ease,background .2s ease;
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;right:50%;bottom:3px;height:2px;border-radius:2px;
    background:var(--primary);transition:left .24s ease,right .24s ease;
  }
  .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
  .nav-link:hover::after{left:14px;right:14px}
  .nav-link.is-active{color:var(--text-1)}
  .nav-link.is-active::after{left:14px;right:14px;background:linear-gradient(135deg,var(--primary),var(--accent))}

  .has-mega{position:relative}
  .mega-panel{
    position:absolute;top:calc(100% + 12px);left:-36px;width:672px;
    padding:22px;border-radius:20px;
    background:rgba(10,18,32,.94);
    backdrop-filter:blur(18px);
    border:1px solid var(--line);
    box-shadow:0 24px 64px rgba(0,0,0,.55);
    opacity:0;visibility:hidden;transform:translateY(6px);
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    display:grid;grid-template-columns:1.3fr .95fr;gap:24px;
  }
  .has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
  .mega-title{font-size:12px;letter-spacing:.08em;color:var(--text-3);margin-bottom:12px}
  .mega-item{display:flex;gap:12px;align-items:flex-start;padding:9px 10px;border-radius:12px;transition:background .2s ease}
  .mega-item:hover{background:rgba(47,216,230,.09)}
  .mega-ico{width:30px;height:30px;flex:none;border-radius:9px;display:grid;place-items:center;background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.22)}
  .mega-item strong{display:block;font-size:14px;font-weight:600;color:var(--text-1)}
  .mega-item span span{display:block;font-size:12px;color:var(--text-3);line-height:1.6}
  .mega-card{
    display:block;border-radius:16px;padding:16px;border:1px solid var(--line);
    background:linear-gradient(160deg,rgba(47,216,230,.12),rgba(122,91,255,.1));
    transition:transform .2s ease,border-color .2s ease;
  }
  .mega-card:hover{transform:translateY(-3px);border-color:rgba(47,216,230,.4)}
  .mega-card p{font-size:13px;color:var(--text-3);margin-top:6px;line-height:1.7}
  .mega-card strong{font-size:15px;color:var(--text-1)}

  .icon-btn{
    width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
    border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--text-2);
    transition:.2s ease;cursor:pointer;
  }
  .icon-btn:hover{color:var(--primary);border-color:rgba(47,216,230,.4);background:rgba(47,216,230,.1)}
  .icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-btn);padding:13px 24px;font-size:15px;font-weight:600;
    border:1px solid transparent;cursor:pointer;transition:.22s ease;white-space:nowrap;
  }
  .btn-primary{
    background:linear-gradient(135deg,#2FD8E6,#7A5BFF);color:#04161c;
    box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 12px 38px rgba(47,216,230,.4)}
  .btn-primary:active{transform:scale(.98);background:linear-gradient(135deg,#0E7C93,#5a3fd6)}
  .btn-ghost{border-color:rgba(47,216,230,.45);color:var(--primary);background:transparent}
  .btn-ghost:hover{background:rgba(47,216,230,.1);transform:translateY(-1px)}
  .btn-ghost:active{transform:scale(.98)}
  .btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
  .btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}

  .burger{display:grid}
  @media(min-width:1024px){.burger{display:none}}

  /* ============ Drawer ============ */
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(360px,86vw);z-index:120;
    background:rgba(10,18,32,.98);backdrop-filter:blur(18px);
    border-left:1px solid var(--line);padding:24px 22px;overflow-y:auto;
    transform:translateX(102%);transition:transform .28s ease;
  }
  .drawer.open{transform:translateX(0)}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(3,6,11,.68);z-index:110;
    opacity:0;visibility:hidden;transition:.28s ease;
  }
  .drawer-mask.open{opacity:1;visibility:visible}
  body.menu-open{overflow:hidden}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 4px;border-bottom:1px solid var(--line);color:var(--text-2);font-size:15px;
  }
  .drawer-link:hover,.drawer-link.is-active{color:var(--primary)}

  /* ============ Hero ============ */
  .hero{position:relative;padding:130px 0 72px;overflow:hidden}
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    opacity:.42;
  }
  .hero::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(5,9,15,.78) 0%,rgba(5,9,15,.86) 55%,var(--bg-base) 100%);
  }
  .hero .shell{position:relative;z-index:2}
  .crumbs{margin-bottom:20px}
  .crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
  .crumbs a{color:var(--text-2);transition:color .2s ease}
  .crumbs a:hover{color:var(--primary)}
  .crumbs li[aria-current]{color:var(--text-3)}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.06em;
    color:var(--primary);background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.26);
    padding:6px 14px;border-radius:999px;margin-bottom:20px;
  }
  .hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.15;font-weight:700;letter-spacing:-.01em}
  .hero-sub{margin-top:16px;font-size:clamp(17px,2vw,21px);color:var(--text-1);font-weight:600}
  .hero-lead{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:660px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
  .kpi-row{
    display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:38px;
    border-top:1px solid var(--line);padding-top:24px;
  }
  .kpi strong{
    display:block;font-size:26px;font-weight:700;color:var(--text-1);
    font-variant-numeric:tabular-nums;letter-spacing:-.01em;
  }
  .kpi span{font-size:13px;color:var(--text-3)}
  @media(max-width:640px){
    .hero{padding:112px 0 56px}
    .kpi-row{grid-template-columns:1fr;gap:14px}
  }

  /* ============ Section ============ */
  .section{padding:56px 0}
  @media(min-width:1024px){.section{padding:96px 0}}
  .section-head{max-width:720px;margin-bottom:40px}
  .section-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700}
  .section-head p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85}
  .section-head.center{margin-left:auto;margin-right:auto;text-align:center}
  .section-alt{background:linear-gradient(180deg,rgba(16,26,44,.55),rgba(10,18,32,.25));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}

  .grid-3{display:grid;grid-template-columns:1fr;gap:24px}
  @media(min-width:768px){.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1024px){.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}}
  .grid-4{display:grid;grid-template-columns:1fr;gap:20px}
  @media(min-width:640px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1024px){.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}}

  .card{
    display:flex;flex-direction:column;overflow:hidden;
    background:var(--glass);border:1px solid var(--line);border-radius:var(--r-card);
    box-shadow:var(--shadow-card);backdrop-filter:blur(10px);
    transition:transform .26s ease,box-shadow .26s ease,border-color .26s ease;
  }
  .card:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.42);box-shadow:var(--shadow-hover)}
  .card-cover{position:relative;aspect-ratio:16/10;background:var(--bg-elev);overflow:hidden}
  .card-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .55s ease}
  .card:hover .card-cover img{transform:scale(1.045)}
  .card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
  .card-body h3{font-size:18px;font-weight:600;line-height:1.5}
  .card-body p{font-size:14px;line-height:1.8;color:var(--text-2)}
  .tag{
    display:inline-flex;align-items:center;font-size:12px;letter-spacing:.06em;
    padding:4px 12px;border-radius:999px;background:rgba(47,216,230,.1);
    border:1px solid rgba(47,216,230,.26);color:var(--primary);
  }
  .tag-purple{background:rgba(122,91,255,.14);border-color:rgba(122,91,255,.32);color:#b7a6ff}
  .card-meta{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-3);font-variant-numeric:tabular-nums}
  .cover-badge{
    position:absolute;left:12px;top:12px;z-index:2;
    font-size:12px;padding:5px 12px;border-radius:999px;
    background:rgba(5,9,15,.66);border:1px solid rgba(255,255,255,.16);
    color:var(--text-1);backdrop-filter:blur(8px);
  }

  /* ============ Split block ============ */
  .split{display:grid;grid-template-columns:1fr;gap:36px;align-items:center}
  @media(min-width:1024px){.split{grid-template-columns:1.02fr 1fr;gap:56px}}
  .split-media{position:relative;border-radius:20px;overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-card)}
  .split-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,9,15,0),rgba(5,9,15,.45))}
  .split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0}
  .check-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
  .check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);line-height:1.8}
  .check-list li::before{
    content:"";flex:none;width:9px;height:9px;margin-top:9px;border-radius:2px;
    background:var(--primary);transform:rotate(45deg);box-shadow:0 0 12px rgba(47,216,230,.6);
  }
  .check-list strong{color:var(--text-1);font-weight:600}

  /* ============ Device card ============ */
  .mini-card{
    padding:22px;border-radius:var(--r-card);border:1px solid var(--line);
    background:var(--glass);transition:.24s ease;display:flex;flex-direction:column;gap:10px;
  }
  .mini-card:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.4);box-shadow:var(--shadow-hover)}
  .mini-ico{
    width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
    background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.24);
  }
  .mini-card h3{font-size:16px;font-weight:600}
  .mini-card p{font-size:14px;color:var(--text-2);line-height:1.8}

  /* ============ Steps ============ */
  .step-grid{display:grid;grid-template-columns:1fr;gap:18px}
  @media(min-width:768px){.step-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1024px){.step-grid{grid-template-columns:repeat(5,minmax(0,1fr))}}
  .step{
    padding:22px 18px;border-radius:16px;border:1px solid var(--line);
    background:linear-gradient(165deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
    transition:.24s ease;
  }
  .step:hover{border-color:rgba(47,216,230,.4);transform:translateY(-4px)}
  .step-num{
    display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;
    border-radius:10px;font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
    background:rgba(122,91,255,.16);border:1px solid rgba(122,91,255,.34);color:#c3b6ff;
    margin-bottom:14px;
  }
  .step h3{font-size:16px;font-weight:600;margin-bottom:8px}
  .step p{font-size:14px;color:var(--text-2);line-height:1.8}

  /* ============ FAQ ============ */
  .faq-wrap{max-width:880px;margin:0 auto}
  .faq-item{
    background:var(--glass);border:1px solid var(--line);border-radius:16px;
    margin-bottom:12px;overflow:hidden;transition:border-color .22s ease,background .22s ease;
  }
  .faq-item[open]{border-color:rgba(47,216,230,.36);background:rgba(255,255,255,.07)}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;
    justify-content:space-between;gap:16px;font-size:17px;font-weight:600;color:var(--text-1);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"";flex:none;width:11px;height:11px;
    border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);
    transform:rotate(45deg);transition:transform .24s ease;margin-top:-4px;
  }
  .faq-item[open] summary::after{transform:rotate(-135deg);margin-top:4px}
  .faq-item summary:focus-visible{outline:2px solid var(--primary);outline-offset:-3px;border-radius:16px}
  .faq-a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--text-2)}

  /* ============ CTA form ============ */
  .cta-panel{
    border-radius:24px;border:1px solid rgba(47,216,230,.24);
    background:
      radial-gradient(600px 260px at 8% 0%,rgba(47,216,230,.16),transparent 65%),
      radial-gradient(520px 260px at 96% 100%,rgba(122,91,255,.16),transparent 62%),
      rgba(16,26,44,.72);
    padding:32px 22px;display:grid;grid-template-columns:1fr;gap:32px;
    box-shadow:0 20px 60px rgba(0,0,0,.4);
  }
  @media(min-width:768px){.cta-panel{padding:44px 40px}}
  @media(min-width:1024px){.cta-panel{grid-template-columns:1fr 1fr;gap:48px;align-items:center}}
  .cta-panel h2{font-size:clamp(23px,2.4vw,30px);font-weight:700;line-height:1.3}
  .cta-panel p{margin-top:14px;color:var(--text-2);font-size:15px;line-height:1.85}
  .form-grid{display:grid;grid-template-columns:1fr;gap:16px}
  @media(min-width:640px){.form-grid{grid-template-columns:1fr 1fr}}
  .field{display:flex;flex-direction:column;gap:8px}
  .field.full{grid-column:1/-1}
  .field label{font-size:13px;color:var(--text-3)}
  .field input,.field textarea{
    width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
    border-radius:var(--r-btn);padding:12px 14px;font-size:15px;color:var(--text-1);
    transition:.2s ease;
  }
  .field textarea{min-height:96px;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:rgba(226,236,248,.3)}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,230,.16);
    background:rgba(255,255,255,.06);
  }
  .form-tip{
    display:none;grid-column:1/-1;font-size:14px;color:var(--primary);
    background:rgba(47,216,230,.1);border:1px solid rgba(47,216,230,.3);
    border-radius:12px;padding:12px 14px;
  }

  /* ============ Footer ============ */
  .site-footer{
    position:relative;margin-top:0;background:#03060B;border-top:1px solid var(--line);
    padding:56px 0 26px;z-index:1;
  }
  .site-footer::before{
    content:"";position:absolute;top:0;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,216,230,.5),transparent);
  }
  .foot-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media(min-width:768px){.foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px}}
  .foot-title{font-size:13px;letter-spacing:.08em;color:var(--text-1);font-weight:600;margin-bottom:16px}
  .foot-links{display:flex;flex-direction:column;gap:11px}
  .foot-links a{font-size:14px;color:var(--text-2);transition:color .2s ease,transform .2s ease;display:inline-block}
  .foot-links a:hover{color:var(--primary);transform:translateX(2px)}
  .social{display:flex;gap:10px;margin-top:20px}
  .foot-contact{font-size:14px;color:var(--text-2);line-height:2}
  .foot-contact span{color:var(--text-3)}
  .qr{
    width:80px;height:80px;border-radius:12px;margin-top:16px;
    border:1px solid var(--line);background:rgba(255,255,255,.04);
    display:grid;place-items:center;
  }
  .foot-bottom{
    margin-top:40px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-direction:column;gap:12px;align-items:flex-start;
    font-size:13px;color:var(--text-3);
  }
  @media(min-width:768px){.foot-bottom{flex-direction:row;justify-content:space-between;align-items:center}}
  .foot-bottom a{color:var(--text-2)}
  .foot-bottom a:hover{color:var(--primary)}
  .back-top{display:inline-flex;align-items:center;gap:6px}

  @media(max-width:520px){
    .hero h1{font-size:28px}
    .section-head h2{font-size:23px}
    .card-body{padding:18px}
  }

/* roulang page: article */
:root{
  --bg-base:#05090F;
  --bg-layer:#0A1220;
  --bg-elev:#101A2C;
  --glass:rgba(255,255,255,.055);
  --line:rgba(255,255,255,.09);
  --primary:#2FD8E6;
  --primary-deep:#0E7C93;
  --accent:#7A5BFF;
  --text-1:#F2F6FB;
  --text-2:rgba(226,236,248,.72);
  --text-3:rgba(226,236,248,.45);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shell:1200px;
  --shell-wide:1280px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;line-height:1.8;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:6px}
h1,h2,h3,h4,p{margin:0}

.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
.shell-wide{max-width:var(--shell-wide)}
@media (min-width:768px){.shell{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(5,9,15,.74);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .25s ease,border-color .25s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.35),transparent);
  opacity:.6;
}
.site-header.is-scrolled{background:rgba(5,9,15,.9);border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;gap:14px;min-height:72px}

.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(47,216,230,.20),rgba(122,91,255,.20));
  border:1px solid rgba(47,216,230,.28);
}
.brand-text{font-size:17px;line-height:1;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary)}

.site-nav{flex:0 1 auto;min-width:0}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:9px 13px;border-radius:10px;font-size:14.5px;font-weight:500;
  color:var(--text-2);transition:color .2s ease,background .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-link::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{transform:scaleX(1)}

.has-mega{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 14px);left:-24px;
  width:min(600px,86vw);
  opacity:0;visibility:hidden;transform:translateY(6px);pointer-events:none;
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;z-index:70;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:none;pointer-events:auto}
.mega-card{
  padding:20px;border-radius:var(--radius-card);
  background:rgba(10,18,32,.94);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  border:1px solid var(--line);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.mega-card > div{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mega-title{
  grid-column:1 / -1;font-size:12px;letter-spacing:.08em;color:var(--text-3);
  margin:0 0 8px;font-weight:500;
}
.mega-item{
  display:flex;gap:10px;align-items:flex-start;padding:10px;border-radius:12px;
  transition:background .2s ease;
}
.mega-item:hover{background:rgba(255,255,255,.055)}
.mega-item strong{display:block;font-size:13.5px;font-weight:600;color:var(--text-1);line-height:1.5}
.mega-item span span{display:block;font-size:12px;color:var(--text-3);line-height:1.6}
.mega-ico{
  width:30px;height:30px;flex:0 0 auto;border-radius:9px;display:grid;place-items:center;
  background:rgba(47,216,230,.10);border:1px solid rgba(47,216,230,.20);
}

.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
.icon-btn{
  width:36px;height:36px;border-radius:10px;display:grid;place-items:center;
  border:1px solid var(--line);background:var(--glass);color:var(--text-2);
  cursor:pointer;transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.icon-btn:hover{color:var(--primary);border-color:rgba(47,216,230,.4);background:rgba(47,216,230,.08)}
.nav-toggle{display:grid}
@media (min-width:1024px){.nav-toggle{display:none}}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border-radius:var(--radius-btn);
  font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:transform .22s ease,filter .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  text-align:center;line-height:1.4;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary),var(--accent));
  color:#04161C;
  box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 12px 38px rgba(47,216,230,.36)}
.btn-primary:active{transform:scale(.98);background:linear-gradient(135deg,var(--primary-deep),#4D38B8);filter:none}
.btn-ghost{border-color:rgba(47,216,230,.42);color:var(--primary);background:transparent}
.btn-ghost:hover{background:rgba(47,216,230,.10);transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98);background:rgba(47,216,230,.16)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:10px}
.btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- tags ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;font-size:12px;letter-spacing:.06em;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
}
.tag-accent{color:#CFE9FF;border-color:rgba(47,216,230,.35);background:rgba(47,216,230,.10)}

/* ---------- hero ---------- */
.art-hero{position:relative;padding:40px 0 30px;overflow:hidden}
.art-hero::before{
  content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);
  width:min(980px,120vw);height:520px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(47,216,230,.18),transparent 72%),
             radial-gradient(closest-side,rgba(122,91,255,.16),transparent 74%);
  filter:blur(8px);
}
.art-hero > .shell{position:relative;z-index:1}

.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  list-style:none;padding:0;margin:0 0 22px;font-size:13px;color:var(--text-3);
}
.crumb li{display:flex;align-items:center;gap:8px;min-width:0}
.crumb li + li::before{content:"/";color:rgba(226,236,248,.26)}
.crumb a{color:var(--text-2);transition:color .2s ease}
.crumb a:hover{color:var(--primary)}
.crumb li[aria-current="page"]{
  color:var(--text-3);max-width:min(52vw,440px);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.art-title{
  font-size:clamp(28px,4.2vw,46px);line-height:1.18;font-weight:700;
  letter-spacing:-.01em;margin:16px 0 18px;max-width:940px;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;font-size:13.5px;color:var(--text-3)}
.meta-item{display:inline-flex;align-items:center;gap:6px;font-variant-numeric:tabular-nums}

/* ---------- article ---------- */
.art-main{padding:8px 0 72px}
.art-cover{
  max-width:1000px;margin:0 auto 44px;border-radius:20px;overflow:hidden;
  border:1px solid var(--line);background:var(--bg-elev);
  aspect-ratio:16/9;box-shadow:0 20px 50px rgba(0,0,0,.45);
}
.art-cover img{width:100%;height:100%;object-fit:cover}
.article-body-wrap{max-width:780px;margin:0 auto}

.article-body{font-size:16px;line-height:1.9;color:rgba(226,236,248,.86);overflow-wrap:break-word}
.article-body p{margin:0 0 20px}
.article-body h2{
  font-size:clamp(21px,2.4vw,25px);font-weight:700;line-height:1.4;
  margin:44px 0 16px;padding-left:14px;border-left:3px solid var(--primary);
}
.article-body h3{font-size:18.5px;font-weight:600;line-height:1.5;margin:32px 0 12px;color:var(--text-1)}
.article-body h4{font-size:16.5px;font-weight:600;margin:26px 0 10px;color:var(--text-1)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px}
.article-body li{margin:8px 0}
.article-body ul li::marker{color:var(--primary)}
.article-body ol li::marker{color:var(--primary);font-variant-numeric:tabular-nums}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(47,216,230,.35);transition:border-color .2s ease}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body strong{color:var(--text-1);font-weight:600}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;color:var(--text-2);
  background:var(--glass);border-left:3px solid var(--primary);
  border-radius:0 var(--radius-img) var(--radius-img) 0;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.04);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:26px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:14.5px;
  display:block;overflow-x:auto;border-radius:12px;
}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;text-align:left;white-space:nowrap}
.article-body th{background:rgba(255,255,255,.05);color:var(--text-1);font-weight:600}
.article-body pre{
  background:#04070C;border:1px solid var(--line);border-radius:12px;
  padding:16px;overflow-x:auto;font-size:13.5px;line-height:1.7;
  font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color:#C9E7F5;margin:24px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;color:#9BE7F2}
.article-body hr{border:none;border-top:1px solid var(--line);margin:36px 0}

.empty-state{
  display:flex;flex-direction:column;align-items:center;gap:14px;
  padding:60px 24px;text-align:center;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
}
.empty-ico{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:rgba(47,216,230,.08);border:1px solid rgba(47,216,230,.22);
}
.empty-title{font-size:19px;font-weight:600;color:var(--text-1)}
.empty-desc{font-size:14px;color:var(--text-2);max-width:420px}

.art-foot{
  max-width:780px;margin:44px auto 0;padding-top:26px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:16px;align-items:center;justify-content:space-between;
}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.art-actions{display:flex;gap:10px;flex-wrap:wrap}

/* ---------- cards / related ---------- */
.section{padding:72px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px}
.sec-title{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.3}
.link-more{font-size:13.5px;color:var(--primary);display:inline-flex;align-items:center;gap:6px;transition:gap .2s ease}
.link-more:hover{gap:10px}

.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:0 8px 28px rgba(0,0,0,.35);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.35);box-shadow:0 16px 40px rgba(47,216,230,.16)}
.card-img{position:relative;aspect-ratio:16/10;background:var(--bg-elev);overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.card:hover .card-img img{transform:scale(1.04)}
.card-badge{
  position:absolute;left:12px;top:12px;padding:4px 10px;border-radius:999px;
  font-size:11.5px;letter-spacing:.06em;
  background:rgba(5,9,15,.72);backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.14);color:#CFE9FF;
}
.card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-title{font-size:16.5px;font-weight:600;line-height:1.55;color:var(--text-1)}
.card-desc{font-size:13.5px;line-height:1.75;color:var(--text-2)}
.card-meta{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;
  font-size:12.5px;color:var(--text-3);font-variant-numeric:tabular-nums;padding-top:4px;
}

/* ---------- CTA strip ---------- */
.cta-band{padding:80px 0 0}
.cta-card{
  position:relative;overflow:hidden;border-radius:24px;
  border:1px solid rgba(47,216,230,.22);
  background:linear-gradient(135deg,rgba(47,216,230,.10),rgba(122,91,255,.10));
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:44px 32px;
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;justify-content:space-between;
}
.cta-card h2{font-size:clamp(21px,2.4vw,28px);font-weight:700;line-height:1.35;margin-bottom:10px}
.cta-card p{font-size:14.5px;color:var(--text-2);max-width:560px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ---------- footer ---------- */
.site-footer{
  margin-top:96px;background:#03060B;position:relative;
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.4),transparent);
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:44px;padding:64px 0 0}
.foot-title{font-size:12.5px;letter-spacing:.1em;color:var(--text-3);margin:0 0 16px}
.foot-links{list-style:none;padding:0;margin:0}
.foot-links li{margin-bottom:10px;font-size:14px;color:var(--text-2)}
.foot-links a{display:inline-block;transition:color .2s ease,transform .2s ease}
.foot-links a:hover{color:var(--primary);transform:translateX(2px)}
.social{display:flex;gap:10px;margin-top:18px}
.qr{
  width:80px;height:80px;border-radius:12px;margin-top:14px;
  display:grid;place-items:center;font-size:11px;color:var(--text-3);
  border:1px dashed rgba(255,255,255,.16);background:var(--glass);
}
.foot-bottom{
  margin-top:52px;padding:22px 0 30px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.foot-bottom a{color:var(--text-2)}
.foot-bottom a:hover{color:var(--primary)}

/* ---------- drawer ---------- */
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(3,6,11,.72);
  backdrop-filter:blur(4px);opacity:0;visibility:hidden;transition:.25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:95;width:min(340px,88vw);
  background:#080F1B;border-left:1px solid var(--line);
  transform:translateX(101%);transition:transform .3s ease;
  padding:20px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:none}
.drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}
.drawer-links{list-style:none;padding:0;margin:0 0 22px}
.drawer-links li{border-bottom:1px solid var(--line)}
.drawer-links a{display:block;padding:14px 4px;font-size:15px;color:var(--text-2);transition:color .2s ease}
.drawer-links a:hover,.drawer-links a.is-active{color:var(--primary)}

@media (max-width:1023px){
  .rel-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:767px){
  .article-body{font-size:15px;line-height:1.85}
  .art-hero{padding:26px 0 22px}
  .art-cover{border-radius:16px;margin-bottom:32px}
  .cta-card{padding:32px 22px}
  .section{padding:56px 0 0}
  .cta-band{padding:60px 0 0}
}
@media (max-width:639px){
  .rel-grid{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr;gap:32px}
  .art-foot{flex-direction:column;align-items:flex-start}
}

/* roulang page: category2 */
:root{
    --bg-base:#05090F;
    --bg-layer:#0A1220;
    --bg-elev:#101A2C;
    --glass:rgba(255,255,255,.055);
    --glass-line:rgba(255,255,255,.10);
    --primary:#2FD8E6;
    --primary-deep:#0E7C93;
    --accent:#7A5BFF;
    --text-1:#F2F6FB;
    --text-2:rgba(226,236,248,.72);
    --text-3:rgba(226,236,248,.45);
    --line:rgba(255,255,255,.09);
    --danger:#FF6B8A;
    --r-card:18px;
    --r-btn:12px;
    --r-img:14px;
    --shadow-card:0 8px 28px rgba(0,0,0,.35);
    --shell:1200px;
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background-color:var(--bg-base);
    background-image:
      radial-gradient(900px 520px at 12% -6%,rgba(47,216,230,.13),transparent 60%),
      radial-gradient(760px 460px at 92% 2%,rgba(122,91,255,.11),transparent 62%);
    background-repeat:no-repeat;
    color:var(--text-1);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    font-size:15px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  ul,ol{list-style:none;margin:0;padding:0}
  h1,h2,h3,h4,p{margin:0}
  button,input,textarea{font:inherit;color:inherit}
  .num{font-variant-numeric:tabular-nums}

  /* ---------- 容器 ---------- */
  .shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 20px}
  .shell-wide{max-width:1280px}
  @media (min-width:768px){.shell{padding:0 32px}}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(5,9,15,.74);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
    transition:box-shadow .25s ease,background .25s ease;
  }
  .site-header::after{
    content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,216,230,.45),rgba(122,91,255,.35),transparent);
    opacity:.7;
  }
  .site-header.is-scrolled{box-shadow:0 14px 40px rgba(0,0,0,.45)}
  .head-inner{display:flex;align-items:center;height:72px;gap:14px}
  .brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
  .brand-mark{
    width:38px;height:38px;display:grid;place-items:center;border-radius:12px;
    background:linear-gradient(135deg,rgba(47,216,230,.18),rgba(122,91,255,.18));
    border:1px solid var(--glass-line);
  }
  .brand-text{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
  .brand-text em{font-style:normal;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}

  .site-nav{flex:1}
  .nav-link{
    position:relative;display:inline-flex;align-items:center;gap:6px;
    padding:9px 14px;border-radius:10px;font-size:15px;font-weight:500;
    color:var(--text-2);transition:color .2s,background .2s;white-space:nowrap;
  }
  .nav-link:hover,.nav-link:focus-visible{color:var(--text-1);background:rgba(255,255,255,.045)}
  .nav-link::after{
    content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2px;border-radius:2px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    transform:scaleX(0);transform-origin:center;transition:transform .22s ease;
  }
  .nav-link:hover::after{transform:scaleX(1)}
  .nav-link.is-active{color:var(--text-1)}
  .nav-link.is-active::after{transform:scaleX(1)}

  .has-mega{position:relative}
  .mega-panel{
    position:absolute;top:calc(100% + 16px);left:50%;
    transform:translate(-50%,8px);
    width:720px;opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
  }
  .has-mega:hover .mega-panel,
  .has-mega:focus-within .mega-panel{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
  .mega-card{
    background:rgba(10,18,32,.94);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    border:1px solid var(--glass-line);border-radius:var(--r-card);
    padding:20px;display:grid;grid-template-columns:1.15fr .85fr;gap:22px;
    box-shadow:0 26px 60px rgba(0,0,0,.55);
  }
  .mega-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:12px;text-transform:uppercase}
  .mega-item{
    display:flex;gap:12px;align-items:flex-start;padding:9px 10px;border-radius:12px;
    transition:background .2s,transform .2s;
  }
  .mega-item:hover{background:var(--glass);transform:translateX(2px)}
  .mega-ico{
    width:30px;height:30px;flex-shrink:0;display:grid;place-items:center;border-radius:9px;
    background:rgba(47,216,230,.10);border:1px solid rgba(47,216,230,.22);
  }
  .mega-item strong{display:block;font-size:14px;font-weight:600;color:var(--text-1)}
  .mega-item span span{display:block;font-size:12px;color:var(--text-3);line-height:1.6;margin-top:2px}

  .head-tools{margin-left:auto;display:flex;align-items:center;gap:10px}
  .icon-btn{
    width:40px;height:40px;display:grid;place-items:center;border-radius:11px;
    border:1px solid var(--glass-line);background:var(--glass);color:var(--text-2);
    cursor:pointer;transition:.2s;
  }
  .icon-btn:hover{color:var(--primary);border-color:rgba(47,216,230,.4);background:rgba(47,216,230,.08)}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:44px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s,filter .2s,background .2s,color .2s;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#04121A;
    box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 14px 38px rgba(47,216,230,.4)}
  .btn-primary:active{transform:scale(.98);background:linear-gradient(135deg,var(--primary-deep),#4b37b8)}
  .btn-primary:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
  .btn-ghost{
    background:transparent;border-color:rgba(47,216,230,.55);color:var(--primary);
  }
  .btn-ghost:hover{background:rgba(47,216,230,.10);transform:translateY(-1px)}
  .btn-ghost:active{transform:scale(.98)}
  .btn-sm{height:38px;padding:0 16px;font-size:14px}
  a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible{
    outline:2px solid var(--primary);outline-offset:3px;
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:56px 0}
  @media (min-width:1024px){.section{padding:96px 0}}
  .sec-head{max-width:720px;margin-bottom:36px}
  .sec-title{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em}
  .sec-desc{margin-top:14px;color:var(--text-2);font-size:15px}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;
    color:var(--primary);text-transform:uppercase;margin-bottom:14px;
  }
  .eyebrow::before{content:"";width:20px;height:1px;background:linear-gradient(90deg,var(--primary),transparent)}

  /* ---------- Hero ---------- */
  .page-hero{
    position:relative;overflow:hidden;
    padding:64px 0 56px;
    border-bottom:1px solid var(--line);
  }
  .page-hero::before{
    content:"";position:absolute;inset:0;
    background-image:url("/assets/images/backpic/back-2.png");
    background-size:cover;background-position:center;
    opacity:.30;filter:saturate(.85);
  }
  .page-hero::after{
    content:"";position:absolute;inset:0;
    background:
      radial-gradient(620px 340px at 78% 18%,rgba(122,91,255,.28),transparent 66%),
      radial-gradient(560px 320px at 12% 82%,rgba(47,216,230,.24),transparent 68%),
      linear-gradient(180deg,rgba(5,9,15,.86),rgba(5,9,15,.94));
  }
  .hero-inner{position:relative;z-index:2}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:20px}
  .crumb a{color:var(--text-3);transition:color .2s}
  .crumb a:hover{color:var(--primary)}
  .crumb li:last-child{color:var(--text-2)}
  .hero-h1{
    font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.02em;
    max-width:900px;
  }
  .hero-h1 span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero-sub{margin-top:18px;font-size:16px;color:var(--text-2);max-width:640px}
  .hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .badge{
    display:inline-flex;align-items:center;gap:7px;font-size:12px;letter-spacing:.06em;
    padding:6px 12px;border-radius:999px;background:var(--glass);
    border:1px solid var(--glass-line);color:var(--text-2);
  }
  .badge b{color:var(--primary);font-weight:600}
  .hero-stats{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px;
    padding-top:26px;border-top:1px solid var(--line);
  }
  @media (min-width:768px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .stat-n{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:24px;font-weight:700;color:var(--primary)}
  .stat-l{font-size:13px;color:var(--text-3);margin-top:4px}

  /* ---------- 分类布局：左筛选 + 右列表 ---------- */
  .cat-layout{display:grid;grid-template-columns:1fr;gap:32px;align-items:start}
  @media (min-width:1024px){.cat-layout{grid-template-columns:272px minmax(0,1fr);gap:40px}}
  .filter-col{
    position:relative;
    background:var(--bg-layer);border:1px solid var(--line);border-radius:var(--r-card);
    padding:22px;box-shadow:var(--shadow-card);
  }
  @media (min-width:1024px){
    .filter-col{position:sticky;top:92px}
  }
  .filter-group + .filter-group{margin-top:22px;padding-top:20px;border-top:1px solid var(--line)}
  .filter-title{font-size:12px;letter-spacing:.12em;color:var(--text-3);margin-bottom:12px}
  .filter-link{
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    padding:9px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
    transition:background .2s,color .2s,transform .2s;
  }
  .filter-link:hover{background:var(--glass);color:var(--text-1);transform:translateX(2px)}
  .filter-link.is-on{background:rgba(47,216,230,.10);color:var(--primary);border:1px solid rgba(47,216,230,.25)}
  .filter-link em{font-style:normal;font-size:12px;color:var(--text-3)}
  .filter-note{
    margin-top:22px;padding:16px;border-radius:14px;
    background:linear-gradient(135deg,rgba(47,216,230,.10),rgba(122,91,255,.10));
    border:1px solid var(--glass-line);font-size:13px;color:var(--text-2);line-height:1.75;
  }

  .list-col .list-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:22px}
  .list-head h2{font-size:22px;font-weight:700}
  .list-head p{font-size:13px;color:var(--text-3)}

  .entry{
    display:grid;grid-template-columns:1fr;gap:18px;
    background:var(--bg-layer);border:1px solid var(--line);border-radius:var(--r-card);
    padding:18px;box-shadow:var(--shadow-card);
    transition:transform .25s,border-color .25s,box-shadow .25s;
  }
  .entry + .entry{margin-top:20px}
  @media (min-width:640px){.entry{grid-template-columns:212px minmax(0,1fr)}}
  .entry:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.35);box-shadow:0 16px 40px rgba(47,216,230,.16)}
  .entry-media{
    position:relative;border-radius:var(--r-img);overflow:hidden;
    background:var(--bg-elev);aspect-ratio:16/10;
  }
  .entry-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
  .entry:hover .entry-media img{transform:scale(1.04)}
  .entry-tag{
    position:absolute;top:10px;left:10px;z-index:2;
    font-size:12px;letter-spacing:.06em;padding:4px 10px;border-radius:999px;
    background:rgba(5,9,15,.72);border:1px solid rgba(47,216,230,.35);color:var(--primary);
    backdrop-filter:blur(6px);
  }
  .entry-body h3{font-size:18px;font-weight:600;line-height:1.5;transition:color .2s}
  .entry:hover .entry-body h3{color:var(--primary)}
  .entry-body p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75}
  .entry-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:14px;font-size:12px;color:var(--text-3)}
  .entry-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
  .entry-foot{display:flex;align-items:center;gap:8px;margin-top:14px;font-size:13px;color:var(--primary);font-weight:600}
  .entry-foot svg{transition:transform .25s}
  .entry:hover .entry-foot svg{transform:translateX(4px)}

  /* ---------- 流程步骤 ---------- */
  .flow{background:linear-gradient(180deg,rgba(10,18,32,.65),rgba(5,9,15,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .flow-grid{display:grid;grid-template-columns:1fr;gap:20px}
  @media (min-width:640px){.flow-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.flow-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .step{
    background:var(--glass);border:1px solid var(--glass-line);border-radius:var(--r-card);
    padding:22px;transition:background .25s,transform .25s,border-color .25s;
  }
  .step:hover{background:rgba(255,255,255,.075);transform:translateY(-4px);border-color:rgba(47,216,230,.3)}
  .step-n{
    font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;letter-spacing:.1em;
    color:var(--primary);display:block;margin-bottom:12px;
  }
  .step h3{font-size:17px;font-weight:600;margin-bottom:8px}
  .step p{font-size:14px;color:var(--text-2);line-height:1.75}

  /* ---------- 保障条 ---------- */
  .strip{display:grid;grid-template-columns:1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  @media (min-width:640px){.strip{grid-template-columns:repeat(2,minmax(0,1fr))}}
  @media (min-width:1024px){.strip{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .strip-item{display:flex;gap:14px;padding:24px 20px;border-bottom:1px solid var(--line)}
  @media (min-width:640px){
    .strip-item{border-right:1px solid var(--line)}
    .strip-item:nth-child(2n){border-right:none}
  }
  @media (min-width:1024px){
    .strip-item{border-bottom:none}
    .strip-item:nth-child(2n){border-right:1px solid var(--line)}
    .strip-item:last-child{border-right:none}
  }
  .strip-ico{
    width:42px;height:42px;flex-shrink:0;border-radius:12px;display:grid;place-items:center;
    background:rgba(47,216,230,.09);border:1px solid rgba(47,216,230,.22);
  }
  .strip-item h3{font-size:15px;font-weight:600}
  .strip-item p{font-size:13px;color:var(--text-3);margin-top:4px;line-height:1.7}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:900px}
  .faq-item{
    background:var(--bg-layer);border:1px solid var(--line);border-radius:var(--r-card);
    padding:0 22px;transition:border-color .25s,background .25s;
  }
  .faq-item + .faq-item{margin-top:14px}
  .faq-item[open]{border-color:rgba(47,216,230,.32);background:rgba(16,26,44,.85)}
  .faq-item summary{
    list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;
    gap:16px;padding:20px 0;font-size:16px;font-weight:600;
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-sign{
    width:26px;height:26px;flex-shrink:0;border-radius:8px;display:grid;place-items:center;
    border:1px solid var(--glass-line);color:var(--primary);font-size:16px;line-height:1;
    transition:transform .22s ease,background .22s;
  }
  .faq-item[open] .faq-sign{transform:rotate(45deg);background:rgba(47,216,230,.12)}
  .faq-item p{padding:0 0 20px;margin-top:-6px;font-size:14px;color:var(--text-2);line-height:1.8;border-top:1px solid var(--line);padding-top:16px}

  /* ---------- CTA 表单 ---------- */
  .cta-card{
    position:relative;overflow:hidden;border-radius:22px;border:1px solid var(--glass-line);
    background:linear-gradient(135deg,rgba(16,26,44,.95),rgba(10,18,32,.92));
    box-shadow:var(--shadow-card);
    display:grid;grid-template-columns:1fr;gap:32px;padding:32px;
  }
  @media (min-width:1024px){.cta-card{grid-template-columns:1fr 1fr;gap:48px;padding:48px}}
  .cta-card::before{
    content:"";position:absolute;inset:auto -20% -60% auto;width:520px;height:420px;
    background:radial-gradient(closest-side,rgba(47,216,230,.28),transparent 70%);
    pointer-events:none;
  }
  .cta-left{position:relative;z-index:2}
  .cta-left h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;line-height:1.3}
  .cta-left p{margin-top:14px;color:var(--text-2);font-size:15px}
  .cta-list{margin-top:22px;display:grid;gap:12px}
  .cta-list li{display:flex;gap:10px;font-size:14px;color:var(--text-2)}
  .cta-list svg{flex-shrink:0;margin-top:5px}

  .form-card{position:relative;z-index:2;background:rgba(5,9,15,.5);border:1px solid var(--glass-line);border-radius:var(--r-card);padding:24px}
  .field + .field{margin-top:16px}
  .field label{display:block;font-size:13px;color:var(--text-2);margin-bottom:8px}
  .field input,.field textarea{
    width:100%;background:rgba(255,255,255,.04);border:1px solid var(--line);
    border-radius:var(--r-btn);padding:12px 14px;font-size:14px;color:var(--text-1);
    transition:border-color .2s,box-shadow .2s,background .2s;
  }
  .field textarea{min-height:98px;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--primary);background:rgba(47,216,230,.06);
    box-shadow:0 0 0 3px rgba(47,216,230,.16);
  }
  .form-tip{margin-top:14px;font-size:12px;color:var(--text-3);line-height:1.7}
  .form-card .btn{width:100%;margin-top:20px}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:#03060B;border-top:1px solid var(--line);
    padding:64px 0 28px;position:relative;
  }
  .site-footer::before{
    content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,216,230,.4),transparent);
  }
  .foot-grid{display:grid;grid-template-columns:1fr;gap:36px}
  @media (min-width:768px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}}
  .foot-title{font-size:13px;letter-spacing:.1em;color:var(--text-3);margin-bottom:16px}
  .foot-links li + li{margin-top:10px}
  .foot-links a{font-size:14px;color:var(--text-2);transition:color .2s,transform .2s;display:inline-block}
  .foot-links a:hover{color:var(--primary);transform:translateX(-2px)}
  .social{display:flex;gap:10px;margin-top:20px}
  .qr-box{
    width:80px;height:80px;border-radius:12px;border:1px dashed rgba(255,255,255,.18);
    display:grid;place-items:center;background:rgba(255,255,255,.03);
    font-size:11px;color:var(--text-3);text-align:center;line-height:1.4;
  }
  .foot-contact li{font-size:14px;color:var(--text-2);line-height:1.9}
  .foot-bottom{
    margin-top:44px;padding-top:22px;border-top:1px solid var(--line);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .foot-bottom a{color:var(--text-3)}
  .foot-bottom a:hover{color:var(--primary)}

  /* ---------- 移动抽屉 ---------- */
  .mobile-drawer{
    position:fixed;top:0;right:0;bottom:0;width:min(88vw,360px);z-index:120;
    background:var(--bg-layer);border-left:1px solid var(--glass-line);
    transform:translateX(102%);transition:transform .28s ease;
    padding:22px;overflow-y:auto;
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-mask{
    position:fixed;inset:0;background:rgba(3,6,11,.72);z-index:110;
    opacity:0;visibility:hidden;transition:opacity .28s,visibility .28s;
  }
  .drawer-mask.is-open{opacity:1;visibility:visible}
  .drawer-link{
    display:block;padding:13px 14px;border-radius:12px;font-size:15px;font-weight:500;
    color:var(--text-2);border:1px solid transparent;
  }
  .drawer-link:hover{background:var(--glass);color:var(--text-1)}
  .drawer-link.is-active{background:rgba(47,216,230,.10);border-color:rgba(47,216,230,.25);color:var(--primary)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}

  @media (max-width:1023px){
    .site-nav{display:none}
  }

/* roulang page: category3 */
:root{
    --bg-base:#05090F;
    --bg-layer:#0A1220;
    --bg-elev:#101A2C;
    --glass:rgba(255,255,255,.055);
    --primary:#2FD8E6;
    --primary-deep:#0E7C93;
    --accent:#7A5BFF;
    --text-1:#F2F6FB;
    --text-2:rgba(226,236,248,.72);
    --text-3:rgba(226,236,248,.45);
    --line:rgba(255,255,255,.09);
    --radius-card:18px;
    --radius-btn:12px;
    --radius-img:14px;
    --shadow-card:0 8px 28px rgba(0,0,0,.35);
    --shadow-hover:0 16px 40px rgba(47,216,230,.16);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg-base);
    color:var(--text-1);
    font-family:var(--font-cn);
    font-size:15px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease}
  button,input,select,textarea{font:inherit;color:inherit}
  h1,h2,h3,h4,p,ul,ol{margin:0}
  ul,ol{padding:0;list-style:none}
  :focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:8px}
  ::selection{background:rgba(47,216,230,.28)}

  .shell{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
  .shell-wide{max-width:1280px}
  @media(min-width:768px){.shell{padding:0 32px}}

  /* ============ 顶部导航 ============ */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:rgba(5,9,15,.76);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid var(--line);
  }
  .site-header::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,216,230,.55),rgba(122,91,255,.35),transparent);
  }
  .header-inner{display:flex;align-items:center;gap:14px;height:72px}
  .brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
  .brand-mark{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(135deg,rgba(47,216,230,.20),rgba(122,91,255,.20));
    border:1px solid var(--line);
  }
  .brand-text{font-size:17px}
  .brand-text em{font-style:normal;color:var(--primary)}
  .site-nav ul{display:flex;align-items:center;gap:2px}
  .nav-link{
    display:inline-flex;align-items:center;gap:6px;
    padding:10px 14px;border-radius:10px;
    color:var(--text-2);font-weight:500;font-size:15px;
    position:relative;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;bottom:4px;height:2px;width:0;
    background:var(--primary);border-radius:2px;transform:translateX(-50%);
    transition:width .22s ease;
  }
  .nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
  .nav-link:hover::after{width:18px}
  .nav-link.is-active{color:var(--text-1);background:rgba(47,216,230,.10)}
  .nav-link.is-active::after{width:18px}

  .has-mega{position:relative}
  .mega-panel{
    position:absolute;top:calc(100% + 12px);left:50%;
    width:760px;max-width:calc(100vw - 48px);
    transform:translate(-50%,8px);
    opacity:0;visibility:hidden;pointer-events:none;
    transition:opacity .2s ease,transform .2s ease,visibility .2s;
    z-index:70;
  }
  .has-mega:hover .mega-panel,
  .has-mega:focus-within .mega-panel{
    opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0);
  }
  .mega-card{
    display:grid;grid-template-columns:1.25fr 1fr;gap:22px;
    padding:22px;border-radius:18px;
    background:rgba(10,18,32,.94);
    border:1px solid var(--line);
    box-shadow:0 24px 60px rgba(0,0,0,.55);
    backdrop-filter:blur(14px);
  }
  .mega-title{font-size:12px;letter-spacing:.10em;color:var(--text-3);margin-bottom:12px}
  .mega-item{
    display:flex;gap:12px;padding:10px;border-radius:12px;
    border:1px solid transparent;
  }
  .mega-item:hover{background:rgba(255,255,255,.05);border-color:var(--line)}
  .mega-ico{
    flex:0 0 auto;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
    background:rgba(47,216,230,.10);border:1px solid var(--line);
  }
  .mega-item strong{display:block;font-size:14px;font-weight:600;color:var(--text-1)}
  .mega-item span span{display:block;font-size:12px;color:var(--text-3);line-height:1.6}
  .mega-entry{
    border-radius:14px;overflow:hidden;border:1px solid var(--line);
    background:var(--bg-elev);display:block;
  }
  .mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .mega-entry p{padding:12px 14px;font-size:13px;color:var(--text-2)}

  .header-actions{display:flex;align-items:center;gap:10px;margin-left:auto}
  .icon-btn{
    width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
    background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-2);
  }
  .icon-btn:hover{color:var(--text-1);border-color:rgba(47,216,230,.45);background:rgba(47,216,230,.10)}
  .menu-toggle{display:none}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:12px 22px;border-radius:var(--radius-btn);
    font-weight:600;font-size:15px;cursor:pointer;border:1px solid transparent;
    transition:transform .18s ease,box-shadow .22s ease,background .22s ease,color .22s ease,border-color .22s ease;
  }
  .btn-primary{
    background:linear-gradient(135deg,var(--primary),var(--accent));
    color:#04121A;
    box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
  }
  .btn-primary:hover{filter:brightness(1.08);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 14px 38px rgba(47,216,230,.38)}
  .btn-primary:active{transform:scale(.98);background:linear-gradient(135deg,var(--primary-deep),var(--primary-deep))}
  .btn-ghost{
    background:transparent;color:var(--text-1);border-color:rgba(47,216,230,.5);
  }
  .btn-ghost:hover{background:rgba(47,216,230,.10);transform:translateY(-1px)}
  .btn-ghost:active{transform:scale(.98)}
  .btn:disabled{opacity:.45;box-shadow:none;cursor:not-allowed}
  .btn-sm{padding:9px 16px;font-size:14px}

  /* ============ 通用卡片 / 标签 ============ */
  .card{
    background:var(--glass);
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    backdrop-filter:blur(14px);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .card-hover:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(47,216,230,.35)}
  .badge{
    display:inline-flex;align-items:center;gap:6px;
    padding:4px 11px;border-radius:999px;font-size:12px;letter-spacing:.06em;
    background:var(--glass);border:1px solid var(--line);color:var(--primary);
  }
  .badge-violet{color:#C3B4FF;border-color:rgba(122,91,255,.35);background:rgba(122,91,255,.12)}
  .tag{font-size:12px;letter-spacing:.06em;color:var(--text-3)}
  .num{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}

  .sec{padding:56px 0}
  @media(min-width:768px){.sec{padding:96px 0}}
  .sec-head{max-width:720px;margin-bottom:36px}
  .sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700}
  .sec-head p{margin-top:12px;color:var(--text-2)}
  .kicker{font-size:12px;letter-spacing:.10em;color:var(--primary);margin-bottom:12px;display:block}

  /* ============ Hero ============ */
  .hero-cat{
    position:relative;overflow:hidden;
    padding:44px 0 64px;
    background:
      radial-gradient(900px 420px at 78% 12%,rgba(47,216,230,.20),transparent 62%),
      radial-gradient(760px 400px at 12% 78%,rgba(122,91,255,.18),transparent 65%),
      linear-gradient(180deg,rgba(5,9,15,.2),var(--bg-base));
  }
  .hero-cat::after{
    content:"";position:absolute;inset:0;z-index:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;background-position:center;
    opacity:.26;
  }
  .hero-grid{position:relative;z-index:1;display:grid;gap:32px;align-items:center}
  @media(min-width:1024px){.hero-grid{grid-template-columns:1.15fr .85fr;gap:48px}}
  .crumb ol{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-3)}
  .crumb li+li::before{content:"/";margin-right:8px;color:rgba(226,236,248,.28)}
  .crumb a:hover{color:var(--primary)}
  .hero-cat h1{
    font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;margin:18px 0 0;
    letter-spacing:-.01em;
  }
  .hero-sub{margin-top:16px;font-size:17px;color:var(--text-2);max-width:640px}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
  .stat-row{
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;
    margin-top:34px;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    background:var(--line);
  }
  @media(min-width:640px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr))}}
  .stat-cell{background:rgba(10,18,32,.86);padding:16px 18px}
  .stat-cell b{display:block;font-size:22px;color:var(--text-1);font-family:ui-monospace,monospace}
  .stat-cell span{font-size:12px;color:var(--text-3);letter-spacing:.04em}

  .hero-card{
    padding:20px;border-radius:var(--radius-card);
    background:rgba(10,18,32,.78);border:1px solid var(--line);
    box-shadow:0 24px 60px rgba(0,0,0,.5);
  }
  .hero-card img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-img)}
  .hero-card h3{font-size:17px;font-weight:600;margin-top:16px}
  .hero-card p{font-size:14px;color:var(--text-2);margin-top:8px}
  .hero-card ul{margin-top:14px;display:grid;gap:8px}
  .hero-card li{display:flex;gap:8px;font-size:13px;color:var(--text-2)}
  .hero-card li svg{flex:0 0 auto;margin-top:4px}

  /* ============ 时间轴 ============ */
  .timeline{position:relative;padding-left:0}
  .timeline::before{
    content:"";position:absolute;left:27px;top:10px;bottom:24px;width:1px;
    background:linear-gradient(180deg,rgba(47,216,230,.55),rgba(122,91,255,.35),rgba(255,255,255,.04));
  }
  .tl-item{position:relative;display:grid;grid-template-columns:56px 1fr;gap:22px;padding-bottom:32px}
  .tl-item:last-child{padding-bottom:0}
  .tl-num{
    position:relative;z-index:1;width:56px;height:56px;border-radius:16px;
    display:grid;place-items:center;
    background:var(--bg-elev);border:1px solid var(--line);
    color:var(--primary);font-weight:700;font-size:16px;
    font-family:ui-monospace,monospace;
    box-shadow:0 8px 24px rgba(0,0,0,.4);
  }
  .tl-item.is-key .tl-num{border-color:rgba(47,216,230,.55);background:rgba(47,216,230,.10)}
  .tl-body{padding:20px 22px;border-radius:var(--radius-card);background:var(--glass);border:1px solid var(--line)}
  .tl-body:hover{border-color:rgba(47,216,230,.35)}
  .tl-body h3{font-size:18px;font-weight:600;margin-top:10px}
  .tl-body p{color:var(--text-2);margin-top:8px}
  .tl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;font-size:12px;color:var(--text-3)}
  .tl-meta span{padding:3px 10px;border-radius:999px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
  @media(max-width:640px){
    .tl-item{grid-template-columns:44px 1fr;gap:14px}
    .tl-num{width:44px;height:44px;border-radius:13px;font-size:14px}
    .timeline::before{left:21px}
    .tl-body{padding:18px}
  }

  /* ============ 场景卡片 ============ */
  .scene-grid{display:grid;gap:24px;grid-template-columns:1fr}
  @media(min-width:768px){.scene-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.scene-grid{grid-template-columns:repeat(3,1fr)}}
  .scene-card{overflow:hidden;border-radius:var(--radius-card);background:var(--glass);border:1px solid var(--line)}
  .scene-card .thumb{position:relative;background:var(--bg-elev)}
  .scene-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
  .scene-card .thumb span{
    position:absolute;left:14px;top:14px;
    padding:4px 10px;border-radius:999px;font-size:12px;
    background:rgba(5,9,15,.7);border:1px solid var(--line);color:var(--primary);backdrop-filter:blur(8px);
  }
  .scene-card .body{padding:20px}
  .scene-card h3{font-size:18px;font-weight:600}
  .scene-card p{color:var(--text-2);font-size:14px;margin-top:10px}
  .scene-card .link{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;color:var(--primary)}
  .scene-card .link:hover{gap:10px}

  /* ============ 准备清单条 ============ */
  .prep-strip{
    display:grid;gap:1px;background:var(--line);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    grid-template-columns:1fr;
  }
  @media(min-width:640px){.prep-strip{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.prep-strip{grid-template-columns:repeat(4,1fr)}}
  .prep-cell{background:var(--bg-layer);padding:26px 22px}
  .prep-cell svg{margin-bottom:12px}
  .prep-cell h3{font-size:16px;font-weight:600}
  .prep-cell p{font-size:13px;color:var(--text-3);margin-top:6px}

  /* ============ 检查表 ============ */
  .table-wrap{overflow-x:auto;border-radius:var(--radius-card);border:1px solid var(--line);background:var(--glass)}
  table.check{width:100%;min-width:640px;border-collapse:collapse;font-size:14px}
  table.check th,table.check td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
  table.check th{font-size:12px;letter-spacing:.06em;color:var(--text-3);font-weight:600;background:rgba(255,255,255,.03)}
  table.check tr:last-child td{border-bottom:none}
  table.check td:first-child{color:var(--text-1);font-weight:600;white-space:nowrap}
  table.check td{color:var(--text-2)}

  /* ============ FAQ ============ */
  .faq-list{display:grid;gap:12px}
  .faq-item{
    border-radius:var(--radius-card);border:1px solid var(--line);
    background:var(--glass);overflow:hidden;
  }
  .faq-item[open]{border-color:rgba(47,216,230,.35)}
  .faq-q{
    cursor:pointer;list-style:none;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 20px;
  }
  .faq-q::-webkit-details-marker{display:none}
  .faq-q h3{font-size:16px;font-weight:600}
  .faq-ico{
    flex:0 0 auto;width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
    border:1px solid var(--line);color:var(--primary);transition:transform .2s ease;
    font-family:ui-monospace,monospace;line-height:1;
  }
  .faq-item[open] .faq-ico{transform:rotate(45deg)}
  .faq-a{padding:0 20px 20px;color:var(--text-2);border-top:1px solid var(--line);margin-top:0;padding-top:16px}

  /* ============ CTA + 表单 ============ */
  .cta-card{
    display:grid;gap:28px;padding:28px;border-radius:22px;
    background:
      radial-gradient(600px 300px at 88% 8%,rgba(122,91,255,.20),transparent 60%),
      linear-gradient(135deg,rgba(47,216,230,.10),rgba(10,18,32,.94));
    border:1px solid var(--line);
    box-shadow:0 24px 60px rgba(0,0,0,.45);
  }
  @media(min-width:1024px){.cta-card{grid-template-columns:1fr 1fr;padding:40px;gap:40px;align-items:center}}
  .cta-card h2{font-size:clamp(24px,2.6vw,32px);line-height:1.25;font-weight:700}
  .cta-card p{color:var(--text-2);margin-top:14px}
  .field{display:grid;gap:8px;margin-bottom:16px}
  .field label{font-size:13px;color:var(--text-3)}
  .field input,.field textarea,.field select{
    width:100%;padding:12px 14px;border-radius:var(--radius-btn);
    background:rgba(255,255,255,.04);border:1px solid var(--line);
    color:var(--text-1);transition:border-color .2s ease,box-shadow .2s ease;
  }
  .field textarea{min-height:104px;resize:vertical}
  .field input::placeholder,.field textarea::placeholder{color:rgba(226,236,248,.32)}
  .field input:focus,.field textarea:focus,.field select:focus{
    outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,230,.18);
  }
  .form-note{font-size:12px;color:var(--text-3);margin-top:12px}

  /* ============ 页脚 ============ */
  .site-footer{
    margin-top:40px;
    background:#04070C;
    border-top:1px solid var(--line);
    position:relative;
  }
  .site-footer::before{
    content:"";position:absolute;left:0;right:0;top:0;height:1px;
    background:linear-gradient(90deg,transparent,rgba(47,216,230,.45),transparent);
  }
  .foot-grid{display:grid;gap:36px;padding:56px 0 36px;grid-template-columns:1fr}
  @media(min-width:768px){.foot-grid{grid-template-columns:repeat(2,1fr)}}
  @media(min-width:1024px){.foot-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr}}
  .foot-title{font-size:13px;letter-spacing:.08em;color:var(--text-3);margin-bottom:16px}
  .foot-links{display:grid;gap:10px}
  .foot-links a{font-size:14px;color:var(--text-2);display:inline-block}
  .foot-links a:hover{color:var(--primary);transform:translateX(2px)}
  .social{display:flex;gap:10px;margin-top:20px}
  .foot-contact{display:grid;gap:10px;font-size:14px;color:var(--text-2)}
  .qr{
    width:80px;height:80px;border-radius:12px;border:1px dashed var(--line);
    display:grid;place-items:center;color:var(--text-3);font-size:11px;text-align:center;
    background:rgba(255,255,255,.03);margin-top:16px;line-height:1.5;
  }
  .foot-bottom{
    border-top:1px solid var(--line);padding:20px 0;
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:13px;color:var(--text-3);
  }
  .foot-bottom a:hover{color:var(--primary)}

  /* ============ 移动端抽屉 ============ */
  .mobile-drawer{
    position:fixed;inset:0;z-index:90;
    background:rgba(5,9,15,.98);
    transform:translateX(100%);transition:transform .28s ease;
    display:flex;flex-direction:column;
    padding:20px;overflow-y:auto;
  }
  .mobile-drawer.is-open{transform:translateX(0)}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
  .drawer-links{display:grid;gap:6px}
  .drawer-links a{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 16px;border-radius:12px;border:1px solid var(--line);
    background:rgba(255,255,255,.03);font-size:15px;color:var(--text-2);
  }
  .drawer-links a:hover,.drawer-links a.is-active{color:var(--text-1);border-color:rgba(47,216,230,.4);background:rgba(47,216,230,.10)}
  .drawer-foot{margin-top:auto;padding-top:24px}

  @media(max-width:1023px){
    .site-nav{display:none}
    .menu-toggle{display:grid}
  }

/* roulang page: category4 */
:root{
  --bg-base:#05090F;
  --bg-layer:#0A1220;
  --bg-elev:#101A2C;
  --glass:rgba(255,255,255,.055);
  --primary:#2FD8E6;
  --primary-deep:#0E7C93;
  --accent:#7A5BFF;
  --text-1:#F2F6FB;
  --text-2:rgba(226,236,248,.72);
  --text-3:rgba(226,236,248,.45);
  --line:rgba(255,255,255,.09);
  --radius-card:18px;
  --radius-btn:12px;
  --radius-img:14px;
  --shadow-card:0 8px 28px rgba(0,0,0,.35);
  --shadow-hover:0 16px 40px rgba(47,216,230,.16);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-base);
  color:var(--text-1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
input,textarea,select{font-family:inherit;font-size:15px}
:focus-visible{outline:2px solid var(--primary);outline-offset:3px}

/* ---------- 布局容器 ---------- */
.shell{width:100%;max-width:1200px;margin:0 auto;padding-left:20px;padding-right:20px}
.shell-wide{max-width:1280px}
@media(min-width:768px){.shell{padding-left:32px;padding-right:32px}}

.sec{padding:56px 0}
@media(min-width:1024px){.sec{padding:96px 0}}
.sec-tight{padding:44px 0}
.sec-head{margin-bottom:32px}
.sec-head h2{font-size:clamp(24px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:.01em}
.sec-head p{margin-top:12px;color:var(--text-2);font-size:15px;max-width:720px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.06em;color:var(--primary);
  background:var(--glass);border:1px solid var(--line);
  padding:6px 14px;border-radius:999px;margin-bottom:18px;
}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,9,15,.74);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.55),transparent);
}
.header-inner{display:flex;align-items:center;gap:12px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,rgba(47,216,230,.18),rgba(122,91,255,.18));
  border:1px solid rgba(47,216,230,.32);
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.02em;white-space:nowrap}
.brand-text em{font-style:normal;color:var(--primary);font-weight:600;margin:0 1px}

.site-nav{margin-left:16px;flex:1}
.site-nav>ul{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:var(--text-2);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--text-1);background:rgba(255,255,255,.05)}
.nav-link::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;transition:left .24s ease,right .24s ease;
}
.nav-link:hover::after{left:14px;right:14px}
.nav-link.is-active{color:var(--text-1)}
.nav-link.is-active::after{left:14px;right:14px}
.nav-link svg{transition:transform .2s ease;opacity:.8}
.has-mega:hover .nav-link svg{transform:rotate(180deg)}

/* Mega 面板 */
.has-mega{position:relative}
.mega-panel{
  position:absolute;top:calc(100% + 14px);left:-8px;
  width:min(820px,84vw);
  opacity:0;visibility:hidden;transform:translateY(6px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
  z-index:90;
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-card{
  display:grid;grid-template-columns:1fr 250px;gap:22px;
  padding:22px;border-radius:var(--radius-card);
  background:rgba(10,18,32,.96);
  backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);
  box-shadow:0 24px 60px rgba(0,0,0,.55);
}
.mega-title{font-size:12px;letter-spacing:.06em;color:var(--text-3);margin-bottom:12px}
.mega-list{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.mega-item{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 12px;border-radius:12px;
  transition:background .2s ease,transform .2s ease;
}
.mega-item:hover{background:rgba(47,216,230,.09);transform:translateY(-2px)}
.mega-ico{
  width:30px;height:30px;flex:0 0 30px;border-radius:9px;display:grid;place-items:center;
  background:rgba(47,216,230,.10);border:1px solid rgba(47,216,230,.24);
}
.mega-item strong{display:block;font-size:14px;font-weight:600}
.mega-item span{display:block;font-size:12.5px;color:var(--text-3);line-height:1.6}
.mega-entry{
  border-radius:14px;overflow:hidden;border:1px solid var(--line);
  background:var(--bg-elev);display:flex;flex-direction:column;
}
.mega-entry img{aspect-ratio:16/10;object-fit:cover;width:100%}
.mega-entry .mega-entry-body{padding:12px 14px 16px}
.mega-entry p{font-size:14px;font-weight:600;line-height:1.6}
.mega-entry small{color:var(--text-3);font-size:12.5px}
.mega-entry:hover{border-color:rgba(47,216,230,.4)}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.icon-btn{
  width:40px;height:40px;display:grid;place-items:center;border-radius:11px;
  background:var(--glass);border:1px solid var(--line);color:var(--text-2);
  cursor:pointer;transition:.2s ease;
}
.icon-btn:hover{color:var(--text-1);border-color:rgba(47,216,230,.4);background:rgba(47,216,230,.08)}
.nav-toggle{display:grid}
@media(min-width:1024px){.nav-toggle{display:none}}
.site-nav{display:none}
@media(min-width:1024px){.site-nav{display:block}}

/* 移动端抽屉 */
.drawer{
  position:fixed;inset:0;z-index:95;display:none;
}
.drawer.is-open{display:block}
.drawer-mask{position:absolute;inset:0;background:rgba(3,6,11,.7);backdrop-filter:blur(4px)}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(360px,88vw);
  background:var(--bg-layer);border-left:1px solid var(--line);
  padding:22px;overflow-y:auto;
}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-link{
  display:block;padding:14px 14px;border-radius:12px;font-size:15px;
  color:var(--text-2);border:1px solid transparent;
}
.drawer-link:hover{background:rgba(255,255,255,.05);color:var(--text-1)}
.drawer-link.is-active{color:var(--primary);background:rgba(47,216,230,.09);border-color:rgba(47,216,230,.3)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1.2;cursor:pointer;
  border:1px solid transparent;transition:.22s ease;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#2FD8E6,#7A5BFF);color:#04141b;
  box-shadow:0 0 0 1px rgba(47,216,230,.35),0 8px 30px rgba(47,216,230,.28);
}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.08);box-shadow:0 0 0 1px rgba(47,216,230,.5),0 14px 40px rgba(47,216,230,.4)}
.btn-primary:active{transform:scale(.98);background:linear-gradient(135deg,#0E7C93,#5a3fd6)}
.btn-ghost{border-color:rgba(47,216,230,.5);color:var(--primary);background:transparent}
.btn-ghost:hover{background:rgba(47,216,230,.10);transform:translateY(-1px)}
.btn-ghost:active{transform:scale(.98)}
.btn-sm{padding:10px 18px;font-size:14px}
.btn[disabled],.btn.is-disabled{opacity:.45;box-shadow:none;cursor:not-allowed}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  min-height:520px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
}
@media(max-width:640px){.hero{min-height:460px}}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;transform:scale(1.02)}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(5,9,15,.72),rgba(5,9,15,.86))}
.hero-glow{
  position:absolute;width:720px;height:720px;left:-160px;top:-260px;pointer-events:none;
  background:radial-gradient(circle,rgba(47,216,230,.34),rgba(122,91,255,.20) 45%,transparent 70%);
}
.hero-inner{position:relative;z-index:2;width:100%;padding:72px 0}
.hero-card{
  max-width:720px;padding:32px;border-radius:20px;
  background:rgba(10,18,32,.68);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow-card);
}
@media(max-width:640px){.hero-card{padding:24px 20px}}
.hero h1{font-size:clamp(30px,4.6vw,52px);line-height:1.15;font-weight:700;letter-spacing:-.01em}
.hero h1 span{color:var(--primary)}
.hero .sub{margin-top:16px;font-size:clamp(16px,1.4vw,19px);color:var(--text-1);font-weight:500}
.hero .desc{margin-top:14px;color:var(--text-2);font-size:15.5px;max-width:620px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.micro{
  display:flex;flex-wrap:wrap;gap:10px 30px;margin-top:28px;padding-top:22px;
  border-top:1px solid var(--line);
}
.micro div{display:flex;flex-direction:column}
.micro b{font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--primary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
.micro small{font-size:12.5px;color:var(--text-3)}

/* 面包屑 */
.crumb{padding:22px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3)}
.crumb a:hover{color:var(--primary)}
.crumb [aria-current]{color:var(--text-2)}
.crumb li+li::before{content:"/";margin-right:8px;color:var(--text-3);opacity:.6}

/* ---------- 卡片通用 ---------- */
.card{
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);transition:.24s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.38);box-shadow:var(--shadow-hover)}
.grid{display:grid;gap:24px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:1023px){.g-3,.g-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.g-2,.g-3,.g-4{grid-template-columns:1fr}}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;letter-spacing:.06em;padding:5px 12px;border-radius:999px;
  background:var(--glass);border:1px solid var(--line);color:var(--primary);
}
.tag.violet{color:#B8A6FF;border-color:rgba(122,91,255,.34);background:rgba(122,91,255,.1)}

/* 速查卡 */
.quick{padding:24px;display:flex;flex-direction:column;gap:12px}
.quick .q-ico{
  width:44px;height:44px;border-radius:13px;display:grid;place-items:center;
  background:rgba(47,216,230,.10);border:1px solid rgba(47,216,230,.26);
}
.quick h3{font-size:18px;font-weight:600}
.quick p{font-size:14px;color:var(--text-2)}
.quick ul{display:flex;flex-direction:column;gap:8px;margin-top:4px}
.quick li{
  font-size:13.5px;color:var(--text-2);padding-left:16px;position:relative;
}
.quick li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;
  background:var(--primary);transform:rotate(45deg);border-radius:1px;opacity:.85;
}

/* ---------- 对比表 ---------- */
.cmp-wrap{
  border:1px solid var(--line);border-radius:var(--radius-card);
  background:var(--glass);overflow-x:auto;-webkit-overflow-scrolling:touch;
}
table.cmp{width:100%;min-width:820px;border-collapse:collapse;font-size:14.5px}
.cmp thead th{
  text-align:left;font-weight:600;font-size:13px;letter-spacing:.06em;
  color:var(--text-3);padding:18px 20px;border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.cmp tbody td{
  padding:18px 20px;border-bottom:1px solid var(--line);color:var(--text-2);vertical-align:top;
}
.cmp tbody tr:last-child td{border-bottom:none}
.cmp tbody tr:hover td{background:rgba(47,216,230,.05)}
.cmp td strong{color:var(--text-1);font-weight:600;display:block;font-size:15px}
.cmp .num{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-variant-numeric:tabular-nums;color:var(--text-1);white-space:nowrap}
.cmp .pick{border-left:2px solid var(--primary)}

/* ---------- 问题卡片混排 ---------- */
.mix{display:grid;gap:24px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:1023px){.mix{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.mix{grid-template-columns:1fr}}
.q-card{overflow:hidden;display:flex;flex-direction:column}
.q-card.span2{grid-column:span 2}
@media(max-width:640px){.q-card.span2{grid-column:span 1}}
.q-card .thumb{position:relative;aspect-ratio:16/10;background:var(--bg-elev);overflow:hidden}
.q-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.q-card:hover .thumb img{transform:scale(1.05)}
.q-card .thumb::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(5,9,15,.78))}
.q-card .badge{
  position:absolute;left:14px;top:14px;z-index:2;
  font-size:12px;padding:5px 11px;border-radius:999px;
  background:rgba(5,9,15,.6);border:1px solid rgba(255,255,255,.16);color:var(--text-1);
}
.q-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.q-card h3{font-size:18px;font-weight:600;line-height:1.5}
.q-card p{font-size:14px;color:var(--text-2)}
.q-card .meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  font-size:12.5px;color:var(--text-3);
}
.q-card .meta .go{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600}
.q-card.plain{
  padding:24px;background:linear-gradient(160deg,rgba(47,216,230,.07),rgba(122,91,255,.05));
  border:1px solid var(--line);border-radius:var(--radius-card);display:flex;flex-direction:column;gap:12px;
  transition:.24s ease;
}
.q-card.plain:hover{transform:translateY(-4px);border-color:rgba(47,216,230,.38);box-shadow:var(--shadow-hover)}
.q-card.plain .k{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:var(--primary);letter-spacing:.06em}
.q-card.plain h3{font-size:17px}
.q-card.plain p{font-size:13.8px;color:var(--text-2)}
.q-card.plain ol{display:flex;flex-direction:column;gap:8px;counter-reset:s}
.q-card.plain ol li{
  counter-increment:s;font-size:13.5px;color:var(--text-2);padding-left:26px;position:relative;
}
.q-card.plain ol li::before{
  content:counter(s);position:absolute;left:0;top:.3em;width:18px;height:18px;border-radius:6px;
  background:rgba(47,216,230,.12);border:1px solid rgba(47,216,230,.3);
  color:var(--primary);font-size:11px;display:grid;place-items:center;font-family:ui-monospace,monospace;
}

/* ---------- 步骤流程 ---------- */
.steps{display:grid;gap:24px;grid-template-columns:repeat(4,minmax(0,1fr));counter-reset:st}
@media(max-width:1023px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.steps{grid-template-columns:1fr}}
.step{
  position:relative;padding:26px 22px 24px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);transition:.24s ease;
}
.step:hover{border-color:rgba(47,216,230,.38);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.step::before{
  counter-increment:st;content:"0" counter(st);
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:13px;color:var(--primary);letter-spacing:.08em;
  display:block;margin-bottom:14px;
}
.step h3{font-size:17px;font-weight:600;margin-bottom:10px}
.step p{font-size:14px;color:var(--text-2)}
.step .line{position:absolute;left:0;top:0;width:100%;height:2px;background:linear-gradient(90deg,rgba(47,216,230,.7),rgba(122,91,255,.2),transparent)}

/* ---------- 清单 + 数据双栏 ---------- */
.dual{display:grid;gap:24px;grid-template-columns:1.15fr .85fr}
@media(max-width:1023px){.dual{grid-template-columns:1fr}}
.panel{
  padding:28px;border-radius:var(--radius-card);
  background:var(--glass);border:1px solid var(--line);
}
.panel h3{font-size:19px;font-weight:600;margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;gap:12px;font-size:14.5px;color:var(--text-2);line-height:1.75}
.check-list li svg{flex:0 0 20px;margin-top:4px}
.stat-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.stat{
  padding:18px;border-radius:14px;background:rgba(255,255,255,.035);border:1px solid var(--line);
}
.stat b{
  display:block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;
  font-size:24px;font-weight:700;color:var(--primary);font-variant-numeric:tabular-nums;
}
.stat small{display:block;margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  border-radius:var(--radius-card);border:1px solid var(--line);background:var(--glass);
  overflow:hidden;transition:.22s ease;
}
.faq-item:hover{border-color:rgba(47,216,230,.3)}
.faq-item.is-open{border-color:rgba(47,216,230,.44);background:rgba(47,216,230,.05)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:none;cursor:pointer;
  font-size:16px;font-weight:600;color:var(--text-1);text-align:left;
}
.faq-q .sign{
  flex:0 0 30px;width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  border:1px solid var(--line);color:var(--primary);font-size:16px;line-height:1;
  transition:.22s ease;
}
.faq-item.is-open .sign{transform:rotate(45deg);background:rgba(47,216,230,.14);border-color:rgba(47,216,230,.4)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .24s ease}
.faq-item.is-open .faq-a{max-height:320px}
.faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--text-2);border-top:1px solid var(--line);padding-top:16px;margin:0 22px 0;padding-left:0;padding-right:0}

/* ---------- CTA 表单 ---------- */
.cta-card{
  display:grid;grid-template-columns:1fr 1fr;gap:34px;
  padding:36px;border-radius:20px;
  background:rgba(10,18,32,.72);backdrop-filter:blur(14px);
  border:1px solid rgba(255,255,255,.10);box-shadow:var(--shadow-card);
  position:relative;overflow:hidden;
}
.cta-card::before{
  content:"";position:absolute;width:520px;height:520px;right:-200px;top:-260px;
  background:radial-gradient(circle,rgba(47,216,230,.22),rgba(122,91,255,.14) 50%,transparent 72%);
  pointer-events:none;
}
@media(max-width:1023px){.cta-card{grid-template-columns:1fr;padding:26px 22px;gap:26px}}
.cta-card h2{font-size:clamp(23px,2.4vw,30px);font-weight:700;line-height:1.3;position:relative}
.cta-card p{margin-top:14px;color:var(--text-2);font-size:15px;position:relative;max-width:480px}
.form-grid{display:grid;gap:16px;position:relative}
.form-row{display:grid;gap:16px;grid-template-columns:1fr 1fr}
@media(max-width:640px){.form-row{grid-template-columns:1fr}}
.field label{display:block;font-size:13px;color:var(--text-3);margin-bottom:8px}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border-radius:var(--radius-btn);
  background:rgba(255,255,255,.04);border:1px solid var(--line);color:var(--text-1);
  transition:.2s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(226,236,248,.32)}
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(47,216,230,.18);
  background:rgba(47,216,230,.05);
}
.field textarea{min-height:104px;resize:vertical}
.form-note{font-size:12.5px;color:var(--text-3)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:40px;background:#03060B;border-top:1px solid var(--line);position:relative;
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,216,230,.45),transparent);
}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:64px 0 44px;
}
@media(max-width:1023px){.foot-grid{grid-template-columns:1fr 1fr;gap:34px;padding:48px 0 34px}}
@media(max-width:640px){.foot-grid{grid-template-columns:1fr}}
.foot-title{font-size:13px;letter-spacing:.06em;color:var(--text-3);margin-bottom:16px}
.foot-links{display:flex;flex-direction:column;gap:10px}
.foot-links a{font-size:14px;color:var(--text-2);transition:.2s ease;display:inline-block}
.foot-links a:hover{color:var(--primary);transform:translateX(2px)}
.foot-contact{display:flex;flex-direction:column;gap:10px;font-size:14px;color:var(--text-2)}
.qr{
  margin-top:18px;width:80px;height:80px;border-radius:12px;
  border:1px dashed rgba(255,255,255,.2);background:rgba(255,255,255,.03);
  display:grid;place-items:center;font-size:11px;color:var(--text-3);text-align:center;line-height:1.4;
}
.social{display:flex;gap:10px;margin-top:20px}
.social .icon-btn{width:38px;height:38px;border-radius:11px}
.foot-bottom{
  border-top:1px solid var(--line);padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px 26px;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.foot-bottom a:hover{color:var(--primary)}

/* 移动端 */
@media(max-width:640px){
  .hero-inner{padding:48px 0}
  .micro{gap:14px 22px}
  .micro b{font-size:19px}
  .panel{padding:22px}
  .cmp thead th,.cmp tbody td{padding:14px 16px}
}